Novel ring main unit convenient to disassemble and maintain

Abstract

The invention relates to the technical field of circuit installation cabinets, and discloses a novel ring main unit convenient to disassemble and maintain, the novel ring main unit comprises a bottom plate, a back plate, a side plate and a cabinet door, in the novel ring main unit, a connecting rod drives a rotating plate to further drive a pulling plate to move along a sliding groove, so that a sliding rod is separated from a fixing sleeve, and rapid disassembly of the side plate is completed; the sleeve on the clamping plate is pushed to be disengaged from the first table body, electrical components on the clamping plate and the supporting plate are automatically moved out of the ring main unit, the position of the clamping plate on the adjusting plate can be adjusted by pulling out the inserting rod, the overhaul space is increased, the ventilation quantity of the filter screen is monitored through the differential pressure sensor on the filter screen, and when the ventilation quantity is reduced due to blockage of the filter screen, the filter screen is stopped. A main control board controls a motor to rotate and drives a threaded rod, the threaded rod drives a brush plate to move, a fan rotates reversely to blow cleaned dust and impurities away from a filter screen, a detection sensor connected with a coil monitors whether the interior of the device is electrified or not, and when the device is electrified, an iron core pushes a mounting plate to extrude a top block, so that a pin rod is inserted into a pin seat, and a cabinet door is in an automatic locking state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of line installation cabinet, in particular to a new type of ring main unit convenient to disassemble and maintain. BACKGROUND

[0002] The ring main unit is a group of high-voltage switch devices installed in a steel plate metal cabinet or made into a set of spaced ring network power supply units. The core part adopts load switch and fuse, and has the advantages of simple structure, small size, low price, improved power supply parameters and performance, power supply safety and the like. It is widely used in power distribution stations and box-type substations of load centers of urban residential areas, high-rise buildings, large public buildings, factories and enterprises, and undertakes the key role of power distribution, line protection and fault isolation.

[0003] The existing ring main unit mostly adopts the structure design of integrated welding or fixing by multiple bolts. When the equipment needs to be repaired or replaced, the operator needs to use various special tools to disassemble a large number of fixing bolts one by one. Moreover, the internal space of the ring main unit is narrow, and it is very inconvenient for the operator to operate stably in the narrow space, which seriously affects the maintenance efficiency. The existing ring main unit mainly relies on the natural heat dissipation of the ventilation holes on both sides of the cabinet body, but the ventilation holes are easy to accumulate dust and sundries, and will block the ventilation channel after long-term use, which greatly reduces the heat dissipation efficiency and poses a great threat to the operation stability and safety of the ring main unit. In addition, the cabinet door locking device of the existing ring main unit is mostly mechanical lock, which lacks an intelligent locking mechanism linked with the live state of the equipment. When the ring main unit is in a live state, if the operator misoperates or the mechanical lock fails, the cabinet door may be accidentally opened, which may cause the operator to directly contact the live components and cause electric shock accidents. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a new type of ring main unit convenient to disassemble and maintain, which solves the problems of low disassembly and maintenance efficiency, easy blockage of ventilation holes and lack of live intelligent locking.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a new type of ring main unit convenient to disassemble and maintain, comprising a bottom plate, a back plate, a side plate and a cabinet door, wherein the bottom plate is provided with convenient components convenient to disassemble, and the cabinet door is provided with auxiliary components improving safety: The convenient assembly comprises two guide rails fixedly connected to the upper surface of the bottom plate, a connecting plate slidably connected between the two guide rails, a sleeve fixedly connected to one end of the connecting plate close to the back plate, two expansion grooves symmetrically formed in the sleeve, an expansion rod slidably connected in the expansion grooves, a top seat fixedly connected to one end of the back plate close to the connecting plate, a light rod fixedly connected to one end of the top seat close to the sleeve, a first table body fixedly connected to one end of the light rod away from the top seat, a clamping block fixedly connected to one end of the expansion rod close to the first table body, a connecting rod rotatably connected to each of the side plates, a rotating frame and a rotating plate fixedly connected to the two ends of the connecting rod, two sliding grooves symmetrically formed in the side plates, a pull plate slidably connected in the sliding grooves, and hinged plates rotatably connected to the two ends of the rotating plate and rotatably connected with the pull plate. The auxiliary assembly comprises a fixed groove formed in the cabinet door, a shell and a sliding rail fixedly connected in the fixed groove, and two top blocks slidably connected in the sliding rail.

[0006] Preferably, two sliding rods are symmetrically installed at one end of the pull plate away from the rotating plate, a top plate is jointly installed at one end of the side plates away from the bottom plate, and a fixing sleeve is fixedly connected to the top plate and the bottom plate close to the four corners and slidably connected with the sliding rods.

[0007] Preferably, an iron core is slidably connected in the shell, an installation plate is fixedly connected to one end of the iron core close to the sliding rail, two push plates are symmetrically installed on the installation plate and rotatably connected with the installation plate.

[0008] Preferably, a sliding groove is formed in the cabinet door, a pin rod is slidably connected in the sliding groove, and pin seats are fixedly connected to one end of the top plate and the bottom plate close to the cabinet door and adapted with the pin rod.

[0009] Preferably, an air inlet is formed in the back plate, a filter screen is fixedly connected in the air inlet, a brush plate is slidably connected in the air inlet and adapted with the filter screen, an air pipe is fixedly connected to one end of the air inlet close to the cabinet door, a threaded rod is rotatably connected in the air pipe and threadedly connected with the brush plate, and a fan is fixedly connected to one end of the air pipe away from the air inlet.

[0010] Preferably, a heat dissipation groove and an installation groove are formed in the top plate, a plurality of shielding plates are uniformly rotatably connected in the heat dissipation groove, and a plurality of belt pulleys are uniformly rotatably connected in the installation groove, and a toothed belt is jointly sleeved on the outer walls of the plurality of belt pulleys.

[0011] Preferably, an adjusting plate is fixedly connected to one end of the connecting plate away from the back plate, a lifting groove is formed in the adjusting plate, a plurality of clamping plates are slidably connected in the lifting groove, and a supporting plate is fixedly connected to one end of the adjusting plate close to the side plate.

[0012] Preferably, the clamping plate is provided with a clamping groove, a plug rod is slidably connected in the clamping groove, a fixing frame is fixedly connected to one end of the clamping plate away from the adjusting plate, and the fixing frame is slidably connected with the plug rod.

[0013] Preferably, the arc-shaped end of the connecting rod is fixedly connected with two clamping strips, and a locking disc is slidably connected to the outer wall of the connecting rod and is matched with the clamping strips.

[0014] Preferably, the shell is provided with a cavity, and a coil is fixedly connected in the cavity.

[0015] To sum up, the technical effects and advantages of the present application are as follows: 1. In the present application, the convenient component is provided to solve the problem of low disassembly and maintenance efficiency of the existing device. After the locking disc is moved to a position not in contact with the clamping strip, the locking disc is automatically locked by rotating, the connecting rod drives the rotating plate, and then drives the pull plate to move along the sliding groove, so that the sliding rod is separated from the fixed sleeve, and the side plate is quickly disassembled. The clamping plate is pushed to slide along the guide rail, the sleeve fixedly connected to the clamping plate is automatically separated from the clamping of the table body one, and under the pushing of the spring in the guide rail, the electrical elements on the clamping plate and the supporting plate are automatically moved out of the ring network cabinet, and the plug rod is pulled out to adjust the position of the clamping plate on the adjusting plate, which increases the maintenance space and avoids disassembling the fixing bolts, so that the disassembly and maintenance of the device is more convenient, and the maintenance efficiency can be improved.

[0016] 2. In the present application, the auxiliary component is provided to solve the problem of easy blockage of the air vent of the existing device and lack of live intelligent locking. The differential pressure sensor on the filter screen monitors the ventilation of the filter screen. When the ventilation is reduced due to blockage of the filter screen, the main control board controls the motor to rotate and drives the threaded rod, and the threaded rod drives the brush plate to move along the sliding groove, so that the filter screen is automatically cleaned. The fan reversely rotates to blow away the dust and impurities cleaned to maintain the ventilation of the filter screen. The live detection sensor connected by the coil monitors whether the device is live. When the device is live, the iron core pushes the mounting plate to extrude the top block, so that the pin rod is inserted into the pin seat, and the cabinet door is in an automatically locked state, avoiding electric shock of the maintenance personnel, and improving the safety of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the new ring network cabinet convenient to disassemble and maintain. Figure 2 It is a clamping plate structure schematic view of the new ring network cabinet convenient to disassemble and maintain. Figure 3 It is a side plate structure schematic view of the new ring network cabinet convenient to disassemble and maintain. Figure 4The connecting rod structure schematic view of the novel ring main unit convenient to disassemble and maintain; Figure 5 The support plate structure schematic view of the novel ring main unit convenient to disassemble and maintain; Figure 6 The adjusting plate section structure schematic view of the novel ring main unit convenient to disassemble and maintain; Figure 7 The sleeve section structure schematic view of the novel ring main unit convenient to disassemble and maintain; Figure 8 The back plate section structure schematic view of the novel ring main unit convenient to disassemble and maintain; Figure 9 The top plate section structure schematic view of the novel ring main unit convenient to disassemble and maintain; Figure 10 The cabinet door section structure schematic view of the novel ring main unit convenient to disassemble and maintain; Figure 11 The enlarged structure schematic view of A in the novel ring main unit convenient to disassemble and maintain; Figure 10

[0018] In the figure: 1, bottom plate; 2, side plate; 3, cabinet door; 4, back plate; 5, top plate; 6, filter screen; 7, rotating frame; 8, guide rail; 9, clamping plate; 10, rotating plate; 11, hinged plate; 12, pull plate; 13, sliding rod; 14, sliding groove; 15, fixed sleeve; 16, locking disc; 17, clamping strip; 18, connecting rod; 19, connecting plate; 20, sleeve; 21, adjusting plate; 22, lifting groove; 23, adjusting hole; 24, clamping groove; 25, fixed frame; 26, insertion rod; 27, telescopic groove; 28, table body one; 29, top seat; 30, light rod; 31, telescopic rod; 32, table body two; 33, clamping block; 34, brush plate; 35, air pipe; 36, air inlet; 37, fan; 38, threaded rod; 39, shielding plate; 40, mounting groove; 41, belt pulley; 42, toothed belt; 43, pin rod; 44, fixed groove; 45, shell; 46, iron core; 47, sliding groove; 48, sliding rail; 49, top block; 50, mounting plate; 51, push plate; 52, cavity; 53, support plate; 54, coil; 55, pin seat; 56, heat dissipation groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.​

[0020] Reference Figures 1-11 ,The utility model provides a new type ring main unit convenient to dismount and maintain, including bottom plate 1, backboard 4, side plate 2 and cabinet door 3, the convenient assembly of convenient dismounting is installed on bottom plate 1, and the auxiliary assembly of improving safety is installed on cabinet door 3, and the convenient assembly includes two guide rails 8 fixedly connected on the upper surface of bottom plate 1, the connecting plate 19 of common sliding connection between two guide rails 8, the one end fixedly connected with sleeve 20 of connecting plate 19 near backboard 4, two telescopic grooves 27 are opened in sleeve 20, telescopic rod 31 is slidably connected in telescopic groove 27, the one end fixedly connected with top seat 29 of backboard 4 near connecting plate 19, the one end fixedly connected with light pole 30 of top seat 29 near sleeve 20, the one end fixedly connected with table body one 28 of light pole 30 away from top seat 29, the one end fixedly connected with clamping block 33 of telescopic rod 31 near table body one 28, two side plates 2 are rotatably connected with connecting rod 18, and the both ends of connecting rod 18 are fixedly connected with rotating frame 7 and rotating plate 10 respectively, two slide grooves 14 are opened in symmetry on side plate 2, and pull plate 12 is slidably connected in slide groove 14, and the both ends of rotating plate 10 are rotatably connected with hinged plate 11, and hinged plate 11 is rotatably connected with pull plate 12, the one end of pull plate 12 away from rotating plate 10 is symmetrically installed with two slide rods 13, and the one end of two side plates 2 away from bottom plate 1 is commonly installed with top plate 5, and the position near four corners of top plate 5 and bottom plate 1 is fixedly connected with fixed sleeve 15, and fixed sleeve 15 is slidably connected with slide rod 13, the one end fixedly connected with adjusting plate 21 of connecting plate 19 away from backboard 4, and the lifting groove 22 is opened in adjusting plate 21, and a plurality of clamping plates 9 are slidably connected in lifting groove 22, and the one end fixedly connected with support plate 53 of adjusting plate 21 near side plate 2, the clamping groove 24 is opened in clamping plate 9, and the plug rod 26 is slidably connected in clamping groove 24, and the one end fixedly connected with fixed frame 25 of clamping plate 9 away from adjusting plate 21, and fixed frame 25 is slidably connected with plug rod 26, a plurality of adjusting holes 23 are evenly opened in adjusting plate 21, and plug rod 26 is adapted with adjusting hole 23, the arc-shaped end of connecting rod 18 is fixedly connected with two clamping strips 17, the outer wall of connecting rod 18 is slidably connected with locking disc 16, and locking disc 16 is adapted with clamping strip 17, and the outer wall of light pole 30 is slidably connected with table body two 32.

[0021] In order to improve the disassembly and maintenance efficiency of the device, the convenient assembly is arranged, after the locking disc 16 is moved to the position not in contact with the clamping strip 17, the locking disc 16 is automatically locked by rotating, the connecting rod 18 drives the rotating plate 10, and then drives the pull plate 12 to move along the sliding groove 14, so that the sliding rod 13 is separated from the fixed sleeve 15, and the quick disassembly of the side plate 2 is completed; the clamping plate 9 is pushed to slide along the guide rail 8, the sleeve 20 fixedly connected on the clamping plate 9 is automatically separated from the clamping connection with the table body 28, under the pushing of the spring in the guide rail 8, the clamping plate 9 and the electric element on the supporting plate 53 are automatically moved out of the ring net cabinet, and the plug rod 26 is pulled out to adjust the position of the clamping plate 9 on the adjusting plate 21, the maintenance space is increased, and the disassembly of the fixing bolt is avoided, so that the disassembly and maintenance of the device are more convenient, and the maintenance efficiency can be improved.

[0022] Specifically, first, when disassembling the side plate 2, the locking disc 16 is pulled along the connecting rod 18 to make the locking disc 16 separate from the groove on the side plate 2, the locking disc 16 is moved along the clamping strip 17 to separate from the clamping strip 17, then the locking disc 16 is rotated to make the groove on the locking disc 16 rotate away from the clamping strip 17, the locking of the locking disc 16 and the side plate 2 is released, the connecting rod 18 is synchronously driven to rotate the rotating plate 10 by rotating the rotating frame 7, the rotating plate 10 is rotated to make the pull plate 12 slide along the sliding groove 14, so that the sliding rod 13 is separated from the fixed sleeve 15, at this time, the spring installed on the sliding rod 13 is in a compressed state, the side plate 2 is moved away from the bottom plate 1, and the disassembly of the side plate 2 is completed.

[0023] Second, push the connecting plate 19 to the direction of the back plate 4, at this time the connecting plate 19 moves along the guide rail 8, the spring installed in the guide rail 8 is in compression state, with the movement of the connecting plate 19, the clamping block 33 on the sleeve 20 pushes the table body two 32 to move along the optical pole 30, when the table body two 32 contacts with the top seat 29, the clamping block 33 and the telescopic rod 31 retract along the telescopic slot 27, at the same time the spring set on the telescopic rod 31 is also in compression state, when the clamping block 33 passes the table body two 32 and approaches the one end of the table body one 28, the clamping block 33 and the telescopic rod 31 extend along the telescopic slot 27, at this time stop pushing the connecting plate 19, at this time the spring in the guide rail 8 pulls the clamping block 33, so that the table body two 32 and the table body one 28 are attached, at this time pull the connecting plate 19 in the opposite direction, so that the clamping block 33 and the telescopic rod 31 retract along the telescopic slot 27 again, when the clamping block 33 passes the attached end of the table body one 28 and the table body two 32, the clamping block 33 and the telescopic rod 31 extend along the telescopic slot 27 again, at this time the sleeve 20 and the table body one 28 automatically release the clamping state, and the table body one 28 and the table body two 32 are the same in shape, and the diameter of the top seat 29 is smaller than the inner diameter of the sleeve 20, the connecting plate 19 after unlocking moves along the guide rail 8 under the spring in the guide rail 8, so that the clamping plate 9 and the electrical elements installed on the supporting plate 53 are moved out of the device, the maintenance space is increased, when the electrical element between the clamping plates 9 is cramped in maintenance space, without disassembling the electrical element, directly pull the plug rod 26, so that the plug rod 26 moves along the inner wall of the clamping slot 24, so that the plug rod 26 and the adjusting hole 23 are disengaged, and the clamping plate 9 moves along the lifting slot 22 opened on the adjusting plate 21, after moving to the appropriate position, release the plug rod 26, the plug rod 26 is automatically inserted into the adjusting hole 23 under the spring set on it.

[0024] Reference Figures 1-11The auxiliary assembly comprises a fixed groove 44 formed on the cabinet door 3, a shell 45 and a sliding rail 48 fixedly connected in the fixed groove 44, two top blocks 49 slidably connected in the sliding rail 48, an iron core 46 slidably connected in the shell 45, an installation plate 50 fixedly connected to one end of the iron core 46 close to the sliding rail 48, two push plates 51 symmetrically installed on the installation plate 50 and rotatably connected with the installation plate 50, a sliding groove 47 formed in the cabinet door 3, a pin rod 43 slidably connected in the sliding groove 47, the pin rod 43 and a pin seat 55 fixedly connected to one end of the top plate 5 and the bottom plate 1 close to the cabinet door 3 and adapted to each other, an air inlet 36 formed on the back plate 4, a filter screen 6 fixedly connected in the air inlet 36, a brush plate 34 slidably connected in the air inlet 36 and adapted to the filter screen 6, the air inlet 36 fixedly connected to one end of a wind pipe 35 close to the cabinet door 3, a threaded rod 38 rotatably connected in the wind pipe 35 and threadedly connected with the brush plate 34, the wind pipe 35 fixedly connected to one end of a fan 37 away from the air inlet 36, a heat dissipation groove 56 and an installation groove 40 formed on the top plate 5, a plurality of shielding plates 39 uniformly rotatably connected in the heat dissipation groove 56, a plurality of belt pulleys 41 uniformly rotatably connected in the installation groove 40, a toothed belt 42 collectively sleeved on the outer walls of the plurality of belt pulleys 41, a cavity 52 formed in the shell 45, and a coil 54 fixedly connected in the cavity 52.

[0025] In order to avoid the blockage of the air vent and improve the safety of the device, the auxiliary assembly is arranged, a differential pressure sensor on the filter screen 6 monitors the ventilation volume of the filter screen 6, when the ventilation volume is reduced due to the blockage of the filter screen 6, the main control board controls the motor to rotate and drives the threaded rod 38 to move the brush plate 34 along the sliding groove 14, so as to realize the automatic cleaning of the filter screen 6; the fan 37 reversely rotates to blow the cleaned dust and impurities away from the filter screen 6, so as to maintain the ventilation volume of the filter screen 6; a live wire detection sensor connected through the coil 54 monitors whether the device is electrified, when the device is electrified, the iron core 46 pushes the installation plate 50 to press the top block 49, so that the pin rod 43 is inserted into the pin seat 55, and the cabinet door 3 is in an automatic locking state, so as to avoid electric shock of the maintenance personnel and improve the safety of the device.

[0026] Specifically, first, when the differential pressure sensor on the filter screen 6 monitors the ventilation volume of the filter screen 6, when the ventilation volume decreases due to the blockage of the filter screen 6, the differential pressure sensor transmits data to the main control board, and the main control board automatically controls the motor to rotate through the controller, drives the threaded rod 38 through the rotation of the motor, and moves the brush plate 34 along the sliding groove 14 to realize automatic cleaning of the filter screen 6; while the brush plate 34 is cleaning, the fan 37 is also rotating in the opposite direction to blow the hot air in the device to the filter screen 6 through the air pipe 35, and the dry hot air can dry the dust and impurities on the filter screen 6, reduce the adhesion of the dust and impurities, and make it easier for the brush plate 34 to clean. The hot air blows the cleaned dust and impurities away from the filter screen 6, avoiding the re-adsorption of the dust and impurities near the filter screen 6 when the air inlet 36 inhales air in the later stage, so as to maintain the ventilation volume of the filter screen 6; during normal heat dissipation in the room, a drive motor is installed on one side of the top plate 5, the drive motor rotates to drive the toothed belt 42 to rotate, and the toothed belt 42 drives the shielding plate 39 to rotate at the same time, so that the heat dissipation groove 56 is in the state of maximum heat dissipation efficiency. The heat dissipation groove 56 forms a ventilation and heat dissipation channel with the air inlet 36 and the fan 37 for discharging hot air in the cabinet. The shielding plate 39 provided here is to prevent rainwater from entering the device when the ring network cabinet is used outdoors or moved outdoors in rainy weather. When it is raining, the drive motor drives the shielding plate 39 to close through the toothed belt 42, avoiding the damage of the electrical elements in the ring network cabinet due to water entering the device.

[0027] Secondly, the coil 54 in the cavity 52 and the external connected voltage divider type voltage sensor, model CS-VT-10KV, are used to monitor whether the electrical elements in the device are electrified. It is worth noting that the above-mentioned voltage divider type voltage sensor, differential pressure sensor and controller are all existing components, which will not be described here. When it is detected that the device is electrified, the voltage divider type voltage sensor detects the electrified signal, so that the controller outputs DC24V voltage to the coil 54. The coil 54 generates a magnetic field after being electrified, the iron core 46 is magnetized and overcomes the elastic force of the spring sleeved thereon, the iron core 46 pushes the mounting plate 50, the push plate 51 rotatably connected on the mounting plate 50, pushes the top block 49 along the groove opened on the slide rail 48, makes the top block 49 push the pin rod 43, makes the pin rod 43 inserted into the pin seat 55, and the cabinet door 3 is in the automatic locking state. The door handle cannot be pulled to open, and the indicator light on the cabinet door 3 is also in the red light state, avoiding electric shock of the maintenance personnel, and improving the safety of the device.

[0028] The working principle of the present application is as follows: the voltage sensor connected with the coil 54 monitors whether the electrical components in the device are electrified. When the electrification in the device is monitored, the voltage sensor detects the electrification signal, and the controller outputs DC 24V voltage to the coil 54. The coil 54 is electrified to generate a magnetic field, the iron core 46 is magnetized to overcome the elastic force of the spring arranged thereon, the iron core 46 pushes the mounting plate 50, the push plate 51 rotatably connected to the mounting plate 50 pushes the top block 49 to move along the groove of the slide rail 48, the top block 49 pushes the pin rod 43 to insert into the pin seat 55, and the cabinet door 3 is in an automatic locking state. At this time, the electrification reason in the device needs to be checked in detail. When the voltage in the device cannot be monitored, the locking disc 16 is pulled along the connecting rod 18, the locking disc 16 is moved along the clamping strip 17 to be out of contact with the clamping strip 17, the rotating frame 7 is rotated to drive the connecting rod 18 to synchronously drive the rotating plate 10 to rotate, the rotating plate 10 is rotated to drive the pull plate 12 to slide along the sliding groove 14, the sliding rod 13 is out of contact with the fixed sleeve 15, the spring arranged on the sliding rod 13 is in a compressed state, the side plate 2 is moved away from the bottom plate 1, and the side plate 2 is disassembled. The connecting plate 19 is pushed towards the back plate 4, the connecting plate 19 moves along the guide rail 8, the clamping block 33 on the sleeve 20 pushes the table body two 32 to move along the light rod 30 with the movement of the connecting plate 19, the clamping block 33 and the telescopic rod 31 are retracted along the telescopic groove 27 when the table body two 32 is in contact with the top seat 29, the spring arranged on the telescopic rod 31 is also in a compressed state, the clamping block 33 and the telescopic rod 31 are extended along the telescopic groove 27 when the clamping block 33 passes the end of the table body two 32 close to the table body one 28, the connecting plate 19 is stopped at this time, the spring in the guide rail 8 pulls the clamping block 33 to make the table body two 32 and the table body one 28 adhere to each other, the connecting plate 19 is pulled in the opposite direction at this time, the clamping block 33 and the telescopic rod 31 are retracted along the telescopic groove 27 again, the clamping block 33 and the telescopic rod 31 are extended along the telescopic groove 27 again when the clamping block 33 passes the adhering end of the table body one 28 and the table body two 32, the sleeve 20 and the table body one 28 are automatically disengaged from the clamping state, the plug rod 26 is directly pulled to move along the inner wall of the clamping groove 24, the plug rod 26 is disengaged from the clamping of the adjusting hole 23, the clamping plate 9 is moved along the lifting groove 22 arranged on the adjusting plate 21, the plug rod 26 is inserted into the adjusting hole 23 after the plug rod 26 is loosened and moved to the appropriate position, the spring arranged on the plug rod 26 pushes the plug rod 26 to be inserted into the adjusting hole 23 automatically, the differential pressure sensor on the filter screen 6 monitors the ventilation of the filter screen 6, the main control board controls the motor to rotate and drives the threaded rod 38 to move along the sliding groove 14 with the brush plate 34 when the ventilation of the filter screen 6 is reduced due to the blockage of the filter screen 6, and the filter screen 6 is automatically cleaned; the fan 37 rotates reversely to blow the cleaned dust and impurities away from the filter screen 6 to maintain the ventilation of the filter screen 6.The shielding plate 39 is used to prevent rainwater from entering the device when the ring main unit is used or carried outdoors, and the shielding plate 39 is closed by the driving motor through the toothed belt 42 when it is raining, so as to avoid the damage of the electrical elements in the ring main unit caused by the rainwater.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for the purpose of limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A new type of ring main unit convenient to disassemble and maintain, comprising a bottom plate (1), a back plate (4), a side plate (2) and a cabinet door (3), characterized in that, The bottom plate (1) is provided with convenient components which are detachable, and the cabinet door (3) is provided with auxiliary components which improve safety: The convenient components comprise two guide rails (8) fixedly connected to the upper surface of the bottom plate (1), a connecting plate (19) slidably connected between the two guide rails (8), a sleeve (20) fixedly connected to the end of the connecting plate (19) close to the back plate (4), two expansion grooves (27) symmetrically formed in the sleeve (20), an expansion rod (31) slidably connected in the expansion grooves (27), a top base (29) fixedly connected to the end of the back plate (4) close to the connecting plate (19), a light rod (30) fixedly connected to the end of the top base (29) close to the sleeve (20), a first table body (28) fixedly connected to the end of the light rod (30) away from the top base (29), a clamping block (33) fixedly connected to the end of the expansion rod (31) close to the first table body (28), a connecting rod (18) rotatably connected to each of the two side plates (2), a rotating frame (7) and a rotating plate (10) fixedly connected to the two ends of the connecting rod (18), two sliding grooves (14) symmetrically formed in the side plate (2), a pull plate (12) slidably connected in the sliding groove (14), and a hinged plate (11) rotatably connected to the two ends of the rotating plate (10) and rotatably connected to the pull plate (12). The auxiliary components comprise a fixed groove (44) formed in the cabinet door (3), a shell (45) and a sliding rail (48) fixedly connected in the fixed groove (44), and two top blocks (49) slidably connected in the sliding rail (48).

2. The new type ring main unit convenient to disassemble and maintain according to claim 1, characterized in that: The end of the pull plate (12) away from the rotating plate (10) is symmetrically provided with two sliding rods (13), the end of each of the two side plates (2) away from the bottom plate (1) is commonly provided with a top plate (5), the top plate (5) and the bottom plate (1) are fixedly connected with a fixed sleeve (15) at positions close to the four corners, and the fixed sleeve (15) is slidably connected with the sliding rod (13).

3. The new type ring main unit convenient to disassemble and maintain according to claim 2, characterized in that: The shell (45) is slidably connected with an iron core (46), the end of the iron core (46) close to the sliding rail (48) is fixedly connected with a mounting plate (50), the mounting plate (50) is symmetrically provided with two push plates (51) rotatably connected with the mounting plate (50).

4. The new type ring main unit convenient to disassemble and maintain according to claim 3, characterized in that: The cabinet door (3) is provided with a sliding groove (47), the sliding groove (47) is slidably connected with a pin rod (43), and the end of the top plate (5) and the bottom plate (1) close to the cabinet door (3) is fixedly connected with a pin seat (55) matched with the pin rod (43).

5. The new type ring main unit convenient to disassemble and maintain according to claim 1, characterized in that: The back plate (4) is provided with an air inlet (36), the air inlet (36) is fixedly connected with a filter screen (6), the air inlet (36) is slidably connected with a brush plate (34), and the brush plate (34) is matched with the filter screen (6), one end of the air inlet (36) near the cabinet door (3) is fixedly connected with an air pipe (35), the air pipe (35) is rotatably connected with a threaded rod (38), and the threaded rod (38) is threadedly connected with the brush plate (34), and one end of the air pipe (35) away from the air inlet (36) is fixedly connected with a fan (37).

6. The new type ring main unit convenient to disassemble and maintain according to claim 2, characterized in that: The top plate (5) is provided with a heat dissipation groove (56) and a mounting groove (40), a plurality of shielding plates (39) are uniformly rotatably connected in the heat dissipation groove (56), and a plurality of belt pulleys (41) are uniformly rotatably connected in the mounting groove (40).

7. The new type ring main unit convenient to disassemble and maintain according to claim 1, characterized in that: The connecting plate (19) is fixedly connected with an adjusting plate (21) away from the back plate (4), the adjusting plate (21) is provided with a lifting groove (22), a plurality of clamping plates (9) are slidably connected in the lifting groove (22), and the adjusting plate (21) is fixedly connected with a supporting plate (53) near the side plate (2).

8. The new type ring main unit convenient to disassemble and maintain according to claim 7, characterized in that: The clamping plate (9) is provided with a clamping groove (24), the clamping groove (24) is slidably connected with a plug rod (26), the clamping plate (9) is fixedly connected with a fixing frame (25) away from the adjusting plate (21), and the fixing frame (25) is slidably connected with the plug rod (26), the adjusting plate (21) is uniformly provided with a plurality of adjusting holes (23), and the plug rod (26) is matched with the adjusting hole (23).

9. The new type ring main unit convenient to disassemble and maintain according to claim 1, characterized in that: The arc-shaped end of the connecting rod (18) is fixedly connected with two clamping strips (17), and the outer wall of the connecting rod (18) is slidably connected with a locking disc (16), and the locking disc (16) is matched with the clamping strip (17).

10. The new type ring main unit convenient to disassemble and maintain according to claim 2, characterized in that: The shell (45) is provided with a cavity (52), the cavity (52) is fixedly connected with a coil (54), and the outer wall of the light rod (30) is slidably connected with a table body two (32).

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