A lead-in device used in a distribution box of a substation

Abstract

The invention relates to the technical field of substations, and provides a lead-in device applied to a distribution box in a substation, comprising a lead-in housing, a lead frame, a ventilation plate, a distribution box, a wire pressing assembly and a disassembly assembly. A first guide rail, a second guide rail, a first cavity, a conductive metal sheet and a second cavity are arranged inside the lead-in housing, and two of the second guide rails are symmetrically distributed on both sides of the first guide rail. The wire pressing assembly comprises an adjusting portion, a wire pressing portion and a bending rod. The adjusting portion comprises an adjusting block, an inclined groove, a first straight groove, a pressure cover, a special-shaped groove and a No. 1 spring. The wire pressing portion comprises a slider, a movable pin, a sliding tube, a sliding plate and a pressure block. The disassembly assembly comprises a limit block, a hollow rack, a No. 2 spring, a rotating rod, a knob and a transmission gear. A limit hole is arranged on the surface of the lead-in housing, the lead-in housing contacts the surface of the lead-in housing, the limit block is plugged and connected in the limit hole, and the lead-in housing has the characteristics of being easy to adjust the position of the lead-in housing and easy to disassemble and assemble the cable.

Description

Technical Field

[0001] The invention relates to the technical field of transformer substations, and in particular to a lead-in device used in a distribution box of a transformer substation. Background Art

[0002] The distribution cabinet lead is an important component in the power distribution system. It has the functions of cable connection, insulation protection and shunting. The lead is used to connect the cables inside the distribution cabinet with the external power supply or load to ensure the safe transmission of electricity. It can effectively prevent current leakage and short circuit, and protect the safety of equipment and personnel.

[0003] Patent No. CN116995539B discloses a power distribution cabinet and its power distribution cabinet wire guide. In view of the problem that the existing wire guides are arranged neatly but cannot avoid wiring from the back, which causes wiring difficulties, the following scheme is proposed, including a power distribution box body with an overall rectangular box structure, a box door is arranged on the front of the power distribution box body, a strip hole is opened on the top of the power distribution box body for line entry, and a wire guide fixing frame is fixed to the inner wall of the back of the power distribution box body by bolts. The wire guide fixing frame is an overall U-shaped structure with an opening facing the back of the power distribution box body. Not only can the entire connector be rotated to a vertical state during wiring so that the wiring terminal is exposed upward, which is convenient for the installer to insert the hard and thick power cord into the connector, but also the internal wiring device can slide outward from the connector, so that the wiring field and operating space are improved.

[0004] The existing wire guides in the substation distribution box have the following defects when in use: (1) The wire guides are generally fixed to the distribution box body by a clip-on structure. After repeated use, the clip-on structure is prone to damage to the clip feet and loosening of the clips; (2) When external cables or internal wires are connected to the wire guides, the wire guides are prone to overheating due to excessive substation load or defects in the internal structure design of the wire guides, thereby affecting the normal operation of the equipment. Summary of the invention

[0005] The object of the present invention is to provide a lead-in device for use in a distribution box of a substation, aiming to solve the problems existing when using the existing lead-in device in the distribution box of the substation.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a lead device applied to a distribution box in a substation, comprising a lead housing, a lead frame, a ventilation plate and a distribution box, wherein the lead housing is fixedly connected to the lead frame, the distribution box is fixedly connected to the ventilation plate, the lead frame is fixedly connected to the ventilation plate, the lead housing is provided with a first guide rail, a second guide rail, a first cavity, a conductive metal sheet and a second cavity, the two second guide rails are symmetrically distributed on both sides of the first guide rail, the first cavity and the second cavity are symmetrically distributed on both sides of the first guide rail, the conductive metal sheet is embedded in the first cavity, and further comprises:

[0007] A wire pressing assembly, the wire pressing assembly comprises an adjusting part, a wire pressing part and a bending rod, the adjusting part comprises an adjusting block, an oblique groove, a first straight groove, a pressure cover, a special-shaped groove and a No. 1 spring, the adjusting block and the pressure cover are fixedly connected, the adjusting block is slidably connected in the first guide rail, the adjusting block surface is provided with an oblique groove and a special-shaped groove, one end of the oblique groove is provided with a first straight groove, one end of the bending rod is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected to the first cavity, the other end of the bending rod is slidably connected in the special-shaped groove, and the No. 1 spring is connected between the adjusting block and the first cavity;

[0008] The wire pressing part includes a slider, a movable pin, a sliding tube, a sliding plate and a pressing block, the movable pin and the sliding tube are both fixedly connected to the slider, the movable pin is slidably connected in the inclined groove and the first straight groove, the slider is slidably connected in the second guide rail, the sliding plate is fixedly connected to the sliding tube, the sliding tube passes through the second guide rail, the sliding plate, the first cavity and the second cavity, the pressing block is fixedly connected to the sliding plate, the sliding plate is slidably connected in the first cavity, the sliding plate is used to seal the first cavity, and the sliding plate is used to clamp the cable, and the wire core is clamped between the pressing block and the conductive metal sheet;

[0009] A disassembly assembly, the disassembly assembly comprising a limit block, a hollow rack, a second spring, a rotating rod, a knob and a transmission gear, the limit block is fixedly connected to the hollow rack, the knob and the transmission gear are respectively fixedly connected to both ends of the rotating rod, the rotating rod passes through the adjustment block, the hollow rack is transmission-connected to the transmission gear, the second spring is connected between the hollow rack and the lead housing, and the hollow rack is in sliding contact with the surface of the lead housing;

[0010] A limiting hole is arranged on the surface of the lead frame, the lead frame contacts the surface of the lead housing, and the limiting block is plugged and connected in the limiting hole.

[0011] As a further solution of the present invention, a first plug-in tube and a second plug-in tube are fixedly connected to the surface of the lead housing, and one end of the first plug-in tube and the second plug-in tube are respectively connected to the first cavity and the second cavity.

[0012] As a further solution of the present invention, an air inlet duct, an air outlet duct, a third plug-in tube and a plug interface are fixedly connected to the surface of the lead frame; the surface of the air inlet duct is fixedly connected to the third plug-in tube; the surface of the lead shell is provided with plug interfaces respectively connected to the air inlet duct and the air outlet duct; the other ends of the first plug-in tube and the second plug-in tube are respectively plugged and connected to the plug interfaces of the air inlet duct and the air outlet duct; one end of the air outlet duct is provided with an opening; the third plug-in tube passes through the ventilation plate; and the third plug-in tube is connected to the heat dissipation system.

[0013] As a further solution of the present invention, the lead housing also includes a first wire clamping groove, a wire branching groove, a terminal stud, a second wire clamping groove and a sealing cover. The wire branching groove is arranged above the second cavity, and the first wire clamping groove is arranged on one side of the first cavity. A sealing sleeve is inlaid on the surface of the sliding plate, and the cable is clamped between the sealing sleeve and the first wire clamping groove. The second wire clamping groove is arranged on the surface of the wire branching groove and the sealing cover, the terminal stud is electrically connected to the conductive metal sheet, and the sealing cover is rotatably connected in the wire branching groove.

[0014] As a further solution of the present invention, the special-shaped groove includes a second straight groove, a V-shaped groove and an arc-shaped groove, the V-shaped groove is connected between the second straight groove and the arc-shaped groove, and one end of the arc-shaped groove away from the V-shaped groove is connected to the second straight groove.

[0015] As a further solution of the present invention, a center hole is provided on the surface of the adjustment block, the rotating rod passes through the center hole, a limit pin is fixedly connected to the surface of the lead shell, the inner side of the hollow rack is in sliding contact with the limit pin, the No. 2 spring is connected between the hollow rack and the limit pin, and the end of the rotating rod close to the hollow rack is connected to the lead shell.

[0016] As a further solution of the present invention, the heat dissipation system includes an air pump module, a first exhaust duct and a second exhaust duct. The air pump module is fixedly connected to the distribution box, the first exhaust duct and the second exhaust duct are both fixedly connected to the air pump module, the third plug-in tube is plug-connected to the second exhaust duct, and the first exhaust duct is distributed between the ventilation plate and the distribution box.

[0017] The beneficial effects of the present invention are as follows: by utilizing the structural design in which the wire pressing assembly, the disassembly assembly and the lead shell cooperate with each other, on the one hand, it is more convenient to select the installation position of the lead shell according to the length or connection angle of the cable, and during the disassembly process, the service life of the installation structure will not be damaged or reduced; on the other hand, only two pressing actions are required to complete the cable connection and disassembly tasks; the structural design of the No. 1 spring preventing the bent rod from detaching from the V-groove can ensure the firmness of the cable connection, and has the characteristics of easy adjustment of the lead shell position and easy disassembly of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a first cross-sectional view of the present invention.

[0019] Figure 2 It is an exploded view of the present invention.

[0020] Figure 3 It is a three-dimensional diagram of the lead housing according to an embodiment of the present invention.

[0021] Figure 4 It is a cross-sectional view of the lead housing according to an embodiment of the present invention.

[0022] Figure 5 It is an exploded view of the wire crimping assembly according to an embodiment of the present invention.

[0023] Figure 6 It is a three-dimensional diagram of the adjustment part of an embodiment of the present invention.

[0024] Figure 7 It is a three-dimensional diagram of the wire pressing part of an embodiment of the present invention.

[0025] Figure 8 It is a three-dimensional diagram of the disassembly and assembly components of an embodiment of the present invention.

[0026] Fig. 9 It is an assembly diagram of the wire crimping assembly and the disassembly assembly according to an embodiment of the present invention.

[0027] Fig.10 It is a second cross-sectional view of the present invention.

[0028] Fig.11 It is a first stereoscopic view of a lead frame according to an embodiment of the present invention.

[0029] Fig.12 It is a second stereoscopic view of the lead frame according to the embodiment of the present invention.

[0030] Fig.13 It is a stereogram of the present invention.

[0031] Fig.14 It is the third cross-sectional view of the present invention.

[0032] Fig.15 For the present invention Fig.14 A partial enlarged view of point a in the middle.

[0033] Figure numerals: 1-lead housing, 11-first guide rail, 111-second guide rail, 12-first cavity, 13-first wire slot, 14-conductive metal sheet, 15-wire slot, 151-wire stud, 152-second wire slot, 153-sealing cover, 16-second cavity, 17-first plug-in tube, 18-second plug-in tube, 19-limiting pin, 2-wire pressing assembly, 21-adjusting part, 211-adjusting block, 212-oblique groove, 2121-first straight groove, 213-pressure cover, 214-special-shaped groove, 2141-second straight groove, 2142-V-shaped groove, 2143-arc groove, 215-No. 1 spring, 216-center hole, 22-pressure Wire part, 221-slider, 222-movable pin, 223-sliding tube, 224-sliding plate, 225-pressing block, 226-sealing sleeve, 23-bent rod, 231-rotating shaft, 3-disassembly and assembly components, 31-limiting block, 32-hollow rack, 33-second spring, 34-rotating rod, 35-knob, 36-transmission gear, 4-lead frame, 41-limiting hole, 42-air inlet pipe, 43-air outlet pipe, 44-third plug-in pipe, 45-plug interface, 46-sinking groove, 47-threaded hole, 5-cable, 51-wire core, 6-distribution box, 61-ventilation plate, 7-heat dissipation system, 71-air pump module, 72-first exhaust duct, 73-second exhaust duct. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0036] See also Figures 1 to 13 In one embodiment of the present invention, a lead device used in a distribution box of a substation includes a lead housing 1, a lead frame 4, a ventilation plate 61 and a distribution box 6, wherein the lead housing 1 is fixedly connected to the lead frame 4, the distribution box 6 is fixedly connected to the ventilation plate 61, the lead frame 4 is fixedly connected to the ventilation plate 61, the lead housing 1 is provided with a first guide rail 11, a second guide rail 111, a first cavity 12, a conductive metal sheet 14 and a second cavity 16, the two second guide rails 111 are symmetrically distributed on both sides of the first guide rail 11, the first cavity 12 and the second cavity 16 are symmetrically distributed on both sides of the first guide rail 11, the conductive metal sheet 14 is embedded in the first cavity 12, and further includes:

[0037] A wire pressing assembly 2, wherein the wire pressing assembly 2 comprises an adjusting portion 21, a wire pressing portion 22 and a bent rod 23, wherein the adjusting portion 21 comprises an adjusting block 211, an oblique groove 212, a first straight groove 2121, a pressure cover 213, a special-shaped groove 214 and a spring 215, wherein the adjusting block 211 and the pressure cover 213 are fixedly connected, wherein the adjusting block 211 is slidably connected in the first guide rail 11, wherein the surface of the adjusting block 211 is provided with an oblique groove 212 and a special-shaped groove 214, wherein one end of the oblique groove 212 is provided with a first straight groove 2121, wherein one end of the bent rod 23 is fixedly connected with a rotating shaft 231, wherein the rotating shaft 231 is rotatably connected with the first cavity 12, wherein the other end of the bent rod 23 is slidably connected in the special-shaped groove 214, and wherein the spring 215 is connected between the adjusting block 211 and the first cavity 12;

[0038] The wire pressing part 22 includes a slider 221, a movable pin 222, a sliding tube 223, a sliding plate 224 and a pressing block 225. The movable pin 222 and the sliding tube 223 are both fixedly connected to the slider 221. The movable pin 222 is slidably connected in the inclined groove 212 and the first straight groove 2121. The slider 221 is slidably connected in the second guide rail 111. The sliding plate 224 is fixedly connected to the sliding tube 223. The sliding tube 223 passes through the second guide rail 111, the sliding plate 224, the first cavity 12 and the second cavity 16. The pressing block 225 is fixedly connected to the sliding plate 224. The sliding plate 224 is slidably connected in the first cavity 12. The sliding plate 224 is used to seal the first cavity 12, and the sliding plate 224 is used to clamp the cable 5. The wire core 51 is clamped between the pressing block 225 and the conductive metal sheet 14.

[0039] The disassembly assembly 3 includes a limit block 31, a hollow rack 32, a second spring 33, a rotating rod 34, a knob 35 and a transmission gear 36. The limit block 31 is fixedly connected to the hollow rack 32. The knob 35 and the transmission gear 36 are respectively fixedly connected to both ends of the rotating rod 34. The rotating rod 34 passes through the adjustment block 211. The hollow rack 32 is transmission-connected to the transmission gear 36. The second spring 33 is connected between the hollow rack 32 and the lead housing 1. The hollow rack 32 is in sliding contact with the surface of the lead housing 1.

[0040] The surface of the lead frame 4 is provided with a groove 46 and a threaded hole 47, the inner wall of the groove 46 is provided with a limiting hole 41, and the threaded hole 47 is threadedly connected with a bolt or a screw for fixedly connecting with the ventilation plate 61. The lead frame 4 contacts the surface of the lead housing 1, and the limiting block 31 is plugged and connected in the limiting hole 41.

[0041] See also Figure 3 , Figure 4 and Fig.10Furthermore, the lead housing 1 also includes a first wire clamping groove 13, a branching groove 15, a terminal stud 151, a second wire clamping groove 152 and a sealing cover 153. The branching groove 15 is arranged above the second cavity 16. The first wire clamping groove 13 is arranged on one side of the first cavity 12. The surface of the sliding plate 224 is inlaid with a sealing sleeve 226. The cable 5 is clamped between the sealing sleeve 226 and the first wire clamping groove 13. The second wire clamping groove 152 is arranged on the surfaces of the branching groove 15 and the sealing cover 153. The terminal stud 151 is electrically connected to the conductive metal sheet 14, and the sealing cover 153 is rotatably connected in the branching groove 15.

[0042] See also Figure 6 and Fig. 9 Furthermore, the special-shaped groove 214 includes a second straight groove 2141, a V-shaped groove 2142 and an arc-shaped groove 2143, the V-shaped groove 2142 is connected between the second straight groove 2141 and the arc-shaped groove 2143, and one end of the arc-shaped groove 2143 away from the V-shaped groove 2142 is connected to the second straight groove 2141.

[0043] See also Figures 1 to 9 Furthermore, a center hole 216 is provided on the surface of the adjusting block 211, and the rotating rod 34 passes through the center hole 216. The surface of the lead shell 1 is fixedly connected to the limit pin 19, and the inner side of the hollow rack 32 is in sliding contact with the limit pin 19. The second spring 33 is connected between the hollow rack 32 and the limit pin 19, and the end of the rotating rod 34 close to the hollow rack 32 is connected to the lead shell 1.

[0044] In the embodiment of the present invention, grooves or protrusions are provided on the surface of the conductive metal sheet 14 to increase the friction force of the wire core 51 . The wire dividing groove 15 and the conductive metal sheet 14 are both connected to the second cavity 16 .

[0045] See also Figure 3 and Figure 4 In one embodiment of the present invention, a first plug-in tube 17 and a second plug-in tube 18 are fixedly connected to the surface of the lead housing 1, and one end of the first plug-in tube 17 and the second plug-in tube 18 are connected to the first cavity 12 and the second cavity 16 respectively.

[0046] See also Fig.11 , Fig.12 , Fig.14 and Fig.15Furthermore, an air inlet pipe 42, an air outlet pipe 43, a third plug-in tube 44 and a plug interface 45 are fixedly connected to the surface of the lead frame 4; the air inlet pipe 42 is fixedly connected to the surface of the third plug-in tube 44; the surface of the lead housing 1 is provided with a plug interface 45 respectively connected to the air inlet pipe 42 and the air outlet pipe 43; the other ends of the first plug-in tube 17 and the second plug-in tube 18 are respectively plugged and connected in the plug interfaces 45 of the air inlet pipe 42 and the air outlet pipe 43; an opening is provided at one end of the air outlet pipe 43; the third plug-in tube 44 passes through the ventilation plate 61, and the third plug-in tube 44 is connected to the heat dissipation system 7.

[0047] See also Fig.14 and Fig.15 Furthermore, the heat dissipation system 7 includes an air pump module 71, a first exhaust duct 72 and a second exhaust duct 73. The air pump module 71 is fixedly connected to the distribution box 6, the first exhaust duct 72 and the second exhaust duct 73 are both fixedly connected to the air pump module 71, the third plug-in tube 44 is plug-connected to the second exhaust duct 73, and the first exhaust duct 72 is distributed between the ventilation plate 61 and the distribution box 6.

[0048] In an embodiment of the present invention, the air pump module 71 transports air to the ventilation plate 61 and the third plug-in tube 44 through the first exhaust duct 72 and the second exhaust duct 73 respectively. The air passes through the ventilation plate 61 to dissipate heat for electronic components in the distribution box 6. The air enters the first cavity 12 along the third plug-in tube 44, the air inlet pipe 42, and the first plug-in tube 17.

[0049] Working principle: S100, the rotating rod 34 and the transmission gear 36 are controlled to rotate by the knob 35, and the rotating transmission gear 36 controls the limit block 31 to disengage from the limit hole 41 through the hollow rack 32, and the installation position of the lead housing 1 is selected according to the length or connection angle of the cable 5;

[0050] S200, on the premise that the installation position of the lead housing 1 is determined, the first plug-in tube 17 and the second plug-in tube 18 are respectively inserted into the two plug-in ports 45, and the lead housing 1 is pressed. The limit block 31 squeezed by the lead frame 4 is first retracted into the lead housing 1. When the limit block 31 is aligned with the limit hole 41 or the lead housing 1 is in contact with the lead frame 4, the elastic force of the second spring 33 drives the limit block 31 into the limit hole 41, thereby completing the fixation of the lead housing 1;

[0051] S300, put the cable 5 into the first cavity 12 through the first wire clamping groove 13, press the pressure cover 213, and the adjusting block 211 moving in the first guide rail 11 drives the slider 221 to make a linear motion along the second guide rail 111 by means of the slidable connection between the inclined groove 212 and the movable pin 222, until the movable pin 222 moves to the position of the first straight groove 2121 and stops, and on the other hand drives the bending rod 23 to rotate around the rotating shaft 231 along the second straight groove 2141 and enter the middle position of the V-shaped groove 2142. The elastic force of the No. 1 spring 215 is used to prevent the bending rod 23 from escaping from the V-shaped groove 2142, so as to fix the position of the adjusting block 211. The sliding plate 224 moving with the slider 221 clamps and presses the cable 5 in the first wire clamping groove 13 by means of the sealing sleeve 226, while the pressing block 225 presses the wire core 51 on the surface of the conductive metal sheet 14. The sliding plate 224 and the sealing sleeve 226 are both used to seal the first cavity 12.

[0052] S400, when the cable 5 needs to be removed, the pressure cover 213 is pressed again. On the one hand, the sliding connection between the first straight groove 2121 and the movable pin 222 will not drive the sliding plate 224 to move. On the other hand, the bending rod 23 rotates around the rotating shaft 231 along the V-shaped groove 2142 to enter the arc groove 2143, and then enters the second straight groove 2141 along the arc groove 2143. At this time, the elastic force of the first spring 215 is used to drive the adjustment block 211 to move in the opposite direction and reset. The adjustment block 211 that moves in the opposite direction drives the sliding plate 224 and the pressure block 225 to reset in the opposite direction by using the sliding connection between the inclined groove 212 and the movable pin 222;

[0053] S500, open the sealing cover 153, connect the wire between the electronic component and the wiring stud 151, close the sealing cover 153, the wire is pressed into the second wire clamping groove 152, and the sealing cover 153 is used to seal the branching groove 15;

[0054] S600, when the distribution box 6 is powered on, the air pump module 71 transports air to the ventilation plate 61 and the third plug-in tube 44 through the first exhaust duct 72 and the second exhaust duct 73 respectively. The air passes through the ventilation plate 61 to dissipate heat for the electronic components in the distribution box 6. The air enters the first cavity 12 along the third plug-in tube 44, the air inlet pipe 42, and the first plug-in tube 17, and then enters the second cavity 16 along the sliding tube 223, and continues to enter the air outlet pipe 43 along the second plug-in tube 18, and is finally discharged into the distribution box 6. In this way, the air pump module 71 can be used to control the air to take away the heat generated when the cable 5 and the wire are connected, while maintaining sealing when the cable 5 and the wire are connected, thereby having the characteristics of good sealing and good heat dissipation.

[0055] In summary, (1) by utilizing the structural design of the mutual cooperation between the crimping assembly 2, the disassembly assembly 3 and the lead housing 1, on the one hand, it is more convenient to select the installation position of the lead housing 1 according to the length or connection angle of the cable 5, and during the disassembly process, the service life of the installation structure will not be damaged or reduced. On the other hand, only two pressing actions are required to complete the connection and disassembly tasks of the cable 5. The structural design of the No. 1 spring 215 preventing the bent rod 23 from escaping from the V-shaped groove 2142 can ensure the firmness of the connection of the cable 5, and has the characteristics of facilitating the adjustment of the lead housing position and facilitating the disassembly of the cable 5.

[0056] (2) Under the premise of ensuring that the sliding plate 224 and the sealing cover 153 respectively seal the first cavity 12 and the branching groove 15, the air pump module 71 can be used to control the air to take away the heat generated when the cable 5 and the wire are connected, so that the cable 5 and the wire are kept sealed when connected, and have the characteristics of good sealing and heat dissipation.

[0057] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the main purpose of the invention.

[0058] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lead wire device used in a distribution box of a substation, comprising a lead wire housing (1), a lead frame (4), a ventilation plate (61) and a distribution box (6), wherein the lead wire housing (1) is fixedly connected to the lead frame (4), the distribution box (6) is fixedly connected to the ventilation plate (61), and the lead frame (4) is fixedly connected to the ventilation plate (61), characterized in that: The lead housing (1) is provided with a first guide rail (11), a second guide rail (111), a first cavity (12), a conductive metal sheet (14) and a second cavity (16) inside, the two second guide rails (111) are symmetrically distributed on both sides of the first guide rail (11), the first cavity (12) and the second cavity (16) are symmetrically distributed on both sides of the first guide rail (11), the conductive metal sheet (14) is embedded in the first cavity (12), and further comprises: The wire pressing assembly (2) comprises an adjusting portion (21), a wire pressing portion (22) and a bending rod (23); the adjusting portion (21) comprises an adjusting block (211), an inclined groove (212), a first straight groove (2121), a pressure cover (213), a special-shaped groove (214) and a first spring (215); the adjusting block (211) and the pressure cover (213) are fixedly connected; the adjusting block (211) is slidably connected in the first guide rail (11); The surface of the node block (211) is provided with an inclined groove (212) and a special-shaped groove (214); one end of the inclined groove (212) is provided with a first straight groove (2121); one end of the bent rod (23) is fixedly connected with a rotating shaft (231); the rotating shaft (231) is rotatably connected to the first cavity (12); the other end of the bent rod (23) is slidably connected in the special-shaped groove (214); and the first spring (215) is connected between the adjustment block (211) and the first cavity (12); The wire pressing part (22) comprises a slider (221), a movable pin (222), a sliding tube (223), a sliding plate (224) and a pressing block (225); the movable pin (222) and the sliding tube (223) are both fixedly connected to the slider (221); the movable pin (222) is slidably connected in the inclined groove (212) and the first straight groove (2121); the slider (221) is slidably connected in the second guide rail (111); the sliding plate (224) is fixedly connected to the sliding tube (223); , the sliding tube (223) passes through the second guide rail (111), the sliding plate (224), the first cavity (12) and the second cavity (16), the pressing block (225) is fixedly connected to the sliding plate (224), the sliding plate (224) is slidably connected in the first cavity (12), the sliding plate (224) is used to seal the first cavity (12), and the sliding plate (224) is used to clamp the cable (5), and the wire core (51) is clamped between the pressing block (225) and the conductive metal sheet (14); A disassembly assembly (3), the disassembly assembly (3) comprising a limit block (31), a hollow rack (32), a second spring (33), a rotating rod (34), a knob (35) and a transmission gear (36), the limit block (31) being fixedly connected to the hollow rack (32), the knob (35) and the transmission gear (36) being fixedly connected to both ends of the rotating rod (34), respectively, the rotating rod (34) passing through the adjustment block (211), the hollow rack (32) being transmission-connected to the transmission gear (36), the second spring (33) being connected between the hollow rack (32) and the lead housing (1), and the hollow rack (32) being in sliding contact with the surface of the lead housing (1); A limiting hole (41) is provided on the surface of the lead frame (4), the lead frame (4) is in contact with the surface of the lead housing (1), and the limiting block (31) is plugged and connected in the limiting hole (41).

2. The lead-in device used in a distribution box of a substation according to claim 1, characterized in that: A first plug-in tube (17) and a second plug-in tube (18) are fixedly connected to the surface of the lead housing (1); one end of the first plug-in tube (17) and the second plug-in tube (18) are respectively connected to the first cavity (12) and the second cavity (16).

3. The lead-in device used in a distribution box of a substation according to claim 2, characterized in that: The surface of the lead frame (4) is fixedly connected with an air inlet pipe (42), an air outlet pipe (43), a third plug-in pipe (44) and a plug-in port (45); the surface of the air inlet pipe (42) is fixedly connected with the third plug-in pipe (44); the surface of the lead housing (1) is provided with a plug-in port (45) respectively connected with the air inlet pipe (42) and the air outlet pipe (43); the other ends of the first plug-in pipe (17) and the second plug-in pipe (18) are respectively plugged into and connected with the plug-in ports (45) of the air inlet pipe (42) and the air outlet pipe (43); one end of the air outlet pipe (43) is provided with an opening; the third plug-in pipe (44) passes through the ventilation plate (61); and the third plug-in pipe (44) is connected with a heat dissipation system (7).

4. The lead-in device used in a distribution box of a substation according to claim 1, characterized in that: The lead housing (1) further comprises a first wire clamping groove (13), a wire dividing groove (15), a terminal stud (151), a second wire clamping groove (152) and a sealing cover (153); the wire dividing groove (15) is arranged above the second cavity (16); the first wire clamping groove (13) is arranged on one side of the first cavity (12); a sealing sleeve (226) is inlaid on the surface of the sliding plate (224); the cable (5) is clamped between the sealing sleeve (226) and the first wire clamping groove (13); the second wire clamping groove (152) is arranged on the surfaces of the wire dividing groove (15) and the sealing cover (153); the terminal stud (151) is electrically connected to the conductive metal sheet (14); and the sealing cover (153) is rotatably connected in the wire dividing groove (15).

5. The lead-in device used in a distribution box of a substation according to claim 1, characterized in that: The special-shaped groove (214) comprises a second straight groove (2141), a V-shaped groove (2142) and an arc-shaped groove (2143); the V-shaped groove (2142) is connected between the second straight groove (2141) and the arc-shaped groove (2143); and one end of the arc-shaped groove (2143) away from the V-shaped groove (2142) is connected to the second straight groove (2141).

6. The lead-in device used in a distribution box of a substation according to claim 1, characterized in that: The surface of the adjustment block (211) is provided with a center hole (216), the rotating rod (34) passes through the center hole (216), the surface of the lead housing (1) is fixedly connected to a limit pin (19), the inner side of the hollow rack (32) is in sliding contact with the limit pin (19), the second spring (33) is connected between the hollow rack (32) and the limit pin (19), and one end of the rotating rod (34) close to the hollow rack (32) is connected to the lead housing (1).

7. The lead-in device used in a distribution box of a substation according to claim 3, characterized in that: The heat dissipation system (7) comprises an air pump module (71), a first exhaust duct (72) and a second exhaust duct (73); the air pump module (71) is fixedly connected to the distribution box (6); the first exhaust duct (72) and the second exhaust duct (73) are both fixedly connected to the air pump module (71); the third plug-in tube (44) is plug-connected to the second exhaust duct (73); and the first exhaust duct (72) is distributed between the ventilation plate (61) and the distribution box (6).

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