Explosion-proof electrical cabinet

Abstract

The invention relates to the technical field of electrical cabinets, in particular to an explosion-proof electrical cabinet, and provides an explosion-proof electrical cabinet for solving the problem that a sealing screw cylinder of an existing explosion-proof electrical cabinet is tedious to disassemble, the explosion-proof electrical cabinet comprises a cabinet body, a plurality of wire ports are formed in the upper end of the cabinet body, sealing devices are arranged at the wire ports respectively, and each sealing device comprises a conical sealing gasket. Conical pressure pads matched with the conical sealing pads are arranged at the lower ends of the threaded cylinders respectively, the sealing device further comprises two incomplete threaded frames matched with the threaded cylinders, and when the threaded cylinders rotate, a structure that the conical pressure pads move downwards to extrude the conical sealing pads can be formed; a driving cylinder capable of moving up and down is further arranged on the inner wall of the threaded cylinder, single teeth are arranged on the two sides of the lower end of the driving cylinder respectively, a wide gear ring matched with the single teeth is fixedly connected to the surface of the upper end of the cabinet body, and when the driving cylinder moves downwards, the two single teeth can move outwards to be meshed with a structure of the wide gear ring; the screw barrel can be quickly disassembled, the screw barrel can be prevented from loosening, and the sealing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical cabinets, and in particular to an explosion-proof electrical cabinet. Background Art

[0002] An electrical cabinet is a cabinet used for distributing electrical components. It plays an important role in industrial automation, building intelligence, power systems, transportation, agriculture and other fields, realizing remote control, real-time monitoring, fault diagnosis and other functions of equipment. An explosion-proof electrical cabinet is a special device used to protect electrical equipment in hazardous environments. It is mainly used in places where explosive gases, steam or dust may exist, such as the oil and gas industry, underground mining, chemical industry, etc. An explosion-proof electrical cabinet needs to have good sealing performance to effectively isolate flammable and explosive gases from the outside. At present, the inlet and outlet wire ports of explosion-proof electrical cabinets are usually fixed by screw barrels and sealing gaskets. Although the screw barrels and sealing gaskets have good sealing performance, they are cumbersome to disassemble. In addition, if the electrical cabinet is used in unstable occasions such as mobile and oscillating, the screw barrel will also loosen, which will lead to a decrease in the sealing effect and pose a greater safety hazard. Therefore, an explosion-proof electrical cabinet is designed to solve the above-mentioned problems. Summary of the invention

[0003] In view of the fact that the existing explosion-proof electrical cabinet sealing barrel is complicated to disassemble, the present invention provides an explosion-proof electrical cabinet, which can quickly disassemble the barrel and prevent the barrel from loosening, thereby improving the sealing effect and effectively solving the problems mentioned in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] An explosion-proof electrical cabinet comprises a cabinet body, wherein a plurality of wire ports are arranged at the upper end of the cabinet body, and sealing devices are respectively arranged at the wire ports, the sealing devices comprising a conical sealing pad, the sealing device also comprising a rotatable threaded barrel, and conical pressure pads matched with the conical sealing pads are respectively arranged at the lower ends of the threaded barrels, and the sealing device also comprises two incomplete threaded racks matched with the threaded barrels, and a structure in which the conical pressure pads move downward to squeeze the conical sealing pads when the threaded barrels rotate; a driving barrel that can move up and down is also arranged on the inner wall of the threaded barrel, and single teeth are respectively arranged on both sides of the lower end of the driving barrel, and a wide gear ring matched with the single teeth is fixedly connected to the upper end surface of the cabinet body, and a structure in which the two single teeth can move outward to mesh with the wide gear ring when the driving barrel moves downward.

[0006] The incomplete threaded frames are slidably connected to the upper end surface of the cabinet, and the upper end surface of the cabinet is also slidably connected to a plurality of track plates that can move forward and backward, and track grooves are respectively opened on the track plates, and long pins matching the track grooves are respectively fixed to the lower end surfaces of the incomplete threaded frames, and the track grooves respectively include inner transverse grooves, short oblique grooves and outer transverse grooves, and when the track plate moves backward, the long pins and the two incomplete threaded frames can be located at the innermost ends under the engagement of the inner transverse grooves and the long pins, and when the track plate moves backward, the long pins and the two incomplete threaded frames can be moved outward under the engagement of the short oblique grooves and the long pins, and when the track plate moves backward, the long pins and the two incomplete threaded frames can be located at the outermost ends under the engagement of the outer transverse grooves and the long pins.

[0007] The front end surface of the track plate is fixedly connected with a first tension spring, and the front end of the first tension spring is fixedly connected with a tension spring seat fixed to the cabinet body; the rear end surfaces of the two track plates are fixedly connected with a U-shaped handle, and the rear side of the upper end surface of the cabinet body is also fixedly connected with a plurality of U-shaped seats, the inner walls of the U-shaped seats are fixedly connected with square boxes, the inner walls of the square boxes are slidably connected with wedge-shaped blocks matching the U-shaped handles, and the inner walls of the bottom ends of the square boxes are fixedly connected with first springs matching the wedge-shaped blocks.

[0008] A first handle is fixedly connected to the outer surface of the driving cylinder, the driving cylinder is slidably connected to the inner wall of the threaded cylinder, a cylinder seat is fixedly connected to the lower end surface of the threaded cylinder, short guide rods slidably connected to the cylinder seat are respectively fixedly connected to both sides of the lower end surface of the driving cylinder, second springs matching the driving cylinder are respectively sleeved on the outer surfaces of the short guide rods, and first guide plates are respectively fixedly connected to the lower end surfaces of the short guide rods, the single teeth are respectively slidably connected to the inner wall of the cylinder seat, the inner ends of the two single teeth are respectively fixedly connected to the first inclined grooves, and the first guide plates are respectively provided with first inclined grooves matching the first inclined grooves, and the conical pressure pad is rotatably connected to the lower end surface of the cylinder seat.

[0009] The front and rear ends of the outer surface of the conical pressure pad are respectively provided with second ear plates, the inner walls of the second ear plates are respectively slidably connected with second guide rods fixed to the cabinet body, and the outer surfaces of the second guide rods are respectively sleeved with fourth springs matching the second ear plates.

[0010] The inner walls of the long pins are fixed with connecting rods, the inner ends of the two connecting rods are fixed with second guide plates, a clamping ring that can move up and down is installed on the two second guide plates, the lower end surfaces of the single teeth are fixed with wedge-shaped clamping plates that match the clamping rings, and the inner walls of the lower ends of the single teeth are rotatably connected with rollers that match the clamping rings.

[0011] The sealing device also includes two limit plates fixed to the cabinet body, square sliders are slidably connected to the outer end surfaces of the two limit plates, first guide rods are fixedly connected to the upper end surfaces of the square sliders, first ear plates are respectively provided at the left and right ends of the outer surface of the clamping ring, the first ear plates are respectively slidably connected to the outer surface of the first guide rod, third springs matching with the first ear plates are also respectively sleeved on the outer surface of the first guide rod, second sliding pins are respectively fixedly connected to the inner walls of the square sliders, and second inclined grooves matching with the second sliding pins are respectively provided on the second guide plates.

[0012] A heat dissipation pipe is arranged at one side end of the cabinet, the upper end of the heat dissipation pipe is an air inlet and the lower end is an air outlet, a rotatable fan blade is arranged at the air inlet, and a heat dissipation fin is arranged on the outer surface of the heat dissipation pipe.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] When in use, the wire is passed through the inner wall of the conical sealing pad and the first handle is driven to rotate the threaded barrel. Under the cooperation of the threaded barrel and the two incomplete threaded frames, the threaded barrel can move downward when rotating, and the threaded barrel can drive the conical pressure pad to move downward when moving downward. When the conical pressure pad moves downward, it will squeeze the conical sealing pad. The conical sealing pad is made of rubber. After being squeezed, the conical sealing pad can shrink inward and can fit tightly against the outer surface of the wire, thereby sealing the wire and preventing external gas from entering the cabinet door. When the threaded barrel needs to be locked, That is, in normal conditions, the threaded barrel is prevented from rotating. By driving the first handle to move the driving barrel downward, the two single teeth can be moved outward to mesh with the wide gear ring. When the wide gear ring meshes with the single teeth, the driving barrel and the threaded barrel can be restricted from rotating, thereby preventing the threaded barrel from loosening and enhancing the sealing effect. The two incomplete threaded racks can also move outward. When the wire needs to be disassembled and replaced, the two incomplete threaded racks can be disengaged from the threaded barrel by moving them outward, that is, the incomplete threaded racks are disengaged from the threaded barrel, and the threaded barrel can be quickly moved upward to reset. This enables rapid disassembly and replacement of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is an axonometric diagram of an explosion-proof electrical cabinet of the present invention.

[0016] Figure 2 The figure is a schematic diagram of the internal structure of an explosion-proof electrical cabinet of the present invention.

[0017] Figure 3 The present invention is a schematic diagram of an incomplete threaded rack installation of an explosion-proof electrical cabinet.

[0018] Figure 4 The present invention is a schematic diagram of the installation of a long pin of an explosion-proof electrical cabinet.

[0019] Figure 5The figure is a cross-sectional view of a U-shaped seat of an explosion-proof electrical cabinet of the present invention.

[0020] Figure 6 The figure is a schematic diagram of the installation of a track plate of an explosion-proof electrical cabinet of the present invention.

[0021] Figure 7 It is a cross-sectional view of a threaded barrel of an explosion-proof electrical cabinet of the present invention.

[0022] Figure 8 It is a cross-sectional view of a driving cylinder of an explosion-proof electrical cabinet of the present invention.

[0023] Fig. 9 The present invention is a cross-sectional view of a cylinder seat of an explosion-proof electrical cabinet.

[0024] Fig.10 It is a schematic diagram of a single-tooth installation of an explosion-proof electrical cabinet of the present invention.

[0025] Fig.11 The figure is a schematic structural diagram of a second guide plate of an explosion-proof electrical cabinet of the present invention.

[0026] Fig.12 The figure is a schematic diagram of fan blade installation of an explosion-proof electrical cabinet of the present invention.

[0027] Numbers in the figure: 1-cabinet, 2-cabinet door, 3-U-shaped seat, 4-square box, 5-wedge-shaped block, 6-pull rod, 7-first spring, 8-U-shaped handle, 9-incomplete threaded frame, 10-long pin, 11-track plate, 12-inner transverse groove, 13-short oblique groove, 14-outer transverse groove, 15-first tension spring, 16-tension spring seat, 17-first handle, 18-driving cylinder, 19-threaded cylinder, 20-cylinder seat, 21-short guide rod, 22-second spring, 23-first guide plate, 24-first oblique groove, 2 5-first sliding pin, 26-single tooth, 27-wedge-shaped clamping plate, 28-roller, 29-clamping ring, 30-limiting plate, 31-square slider, 32-first guide rod, 33-third spring, 34-second sliding pin, 35-second guide plate, 36-second inclined groove, 37-connecting rod, 38-wide gear ring, 39-conical pressure pad, 40-second ear plate, 41-second guide rod, 42-fourth spring, 43-conical sealing pad, 44-fan blade, 45-heat pipe, 46-heat sink, 47-first ear plate. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0029] like Figure 1-12As shown, the present invention provides an explosion-proof electrical cabinet, including a cabinet body 1, wherein a plurality of wire ports are provided at the upper end of the cabinet body 1, and sealing devices are respectively provided at the wire ports, wherein the sealing devices include a conical sealing gasket 43, and the sealing device also includes a rotatable threaded barrel 19, wherein the lower end of the threaded barrel 19 is respectively provided with a conical pressure pad 39 matched with the conical sealing gasket 43, and the sealing device also includes two incomplete threaded racks 9 matched with the threaded barrel 19, and when the threaded barrel 19 rotates, a structure in which the conical pressure pad 39 moves downward to squeeze the conical sealing gasket 43 can be formed; a driving barrel 18 that can move up and down is also provided on the inner wall of the threaded barrel 19, and single teeth 26 are respectively provided on both sides of the lower end of the driving barrel 18, and a wide tooth ring 38 matched with the single tooth 26 is fixedly connected to the upper end surface of the cabinet body 1, and when the driving barrel 18 moves downward, the two single teeth 26 can be moved outward to mesh with the wide tooth ring 38.

[0030] like Figure 1-8 As shown, a cabinet door 2 is provided at the front end of the cabinet 1, and the cabinet door 2 can seal the cabinet 1. The cabinet door 2 is also provided with an electric control button, a lock, etc., and electrical components are provided in the cabinet 1. The electric control button, the electrical components, and the lock all belong to the prior art and are not described in detail. The wire opening can allow the wire to pass through the inner wall of the upper end of the cabinet 1, that is, the wire is connected to the electrical components in the cabinet 1; the conical sealing gasket 43 is fixedly connected to the inner wall of the wire opening, and the conical sealing gasket 43, the conical pressure pad 39, and the threaded cylinder 19 are hollow, allowing the wire to pass through; by providing a rotatable threaded cylinder 19, under the cooperation of the threaded cylinder 19 and the two incomplete threaded frames 9, the threaded cylinder 19 can move downward when it rotates, and when the threaded cylinder 19 moves downward, it can drive the conical pressure pad 39 to move downward, and when the conical pressure pad 39 moves downward, it will squeeze the conical sealing gasket 43, and the conical sealing gasket 43 is rubber The conical sealing gasket 43 is made of rubber material, and can shrink inward after being squeezed, and can be close to the outer surface of the wire, thereby sealing the wire and preventing external gas from entering the cabinet door 2; when the threaded barrel 19 needs to be locked, that is, to prevent the threaded barrel 19 from rotating under normal conditions, the driving barrel 18 is moved downward, and the two single teeth 26 can be moved outward to mesh with the wide gear ring 38. When the wide gear ring 38 is meshed with the single teeth 26, the driving barrel 18 and the threaded barrel 19 can be restricted from rotating, thereby preventing the threaded barrel 19 from loosening and enhancing the sealing effect; the two incomplete thread racks 9 can also move outward, and when the wire needs to be disassembled and replaced, the two incomplete thread racks 9 can be moved outward to disengage from the threaded barrel 19, that is, the incomplete thread racks 9 are disengaged from the threaded barrel 19, and the threaded barrel 19 can be quickly moved upward to reset. Thus, the wire can be quickly disassembled and replaced.

[0031] The incomplete threaded racks 9 are respectively slidably connected to the upper end surface of the cabinet 1, and the upper end surface of the cabinet 1 is also slidably connected with a plurality of track plates 11 that can move forward and backward, and track grooves are respectively opened on the track plates 11. Long pins 10 that match the track grooves are respectively fixed to the lower end surfaces of the incomplete threaded racks 9, and the track grooves respectively include inner transverse grooves 12, short oblique grooves 13 and outer transverse grooves 14. Under the engagement of the inner transverse grooves 12 with the long pins 10, when the track plate 11 moves backward, the long pins 10 and the two incomplete threaded racks 9 can be located at the innermost ends. Under the engagement of the short oblique grooves 13 with the long pins 10, when the track plate 11 moves backward, the long pins 10 and the two incomplete threaded racks 9 can be moved outward. Under the engagement of the outer transverse grooves 14 with the long pins 10, when the track plate 11 moves backward, the long pins 10 and the two incomplete threaded racks 9 can be located at the outermost ends.

[0032] like Figure 5-6 As shown, the incomplete thread frame 9 can be slidably connected to the upper surface of the cabinet 1 left and right, and the track plate 11 can be slidably connected to the upper surface of the cabinet 1 front and back; through the meshing of the track groove and the long pin 10, the long pin 10 can be driven to move outward or inward when the track plate 11 moves, and when the track plate 11 moves from the front end to the rear, the long pin 10 can be meshed with the inner transverse groove 12, the short oblique groove 13 and the outer transverse groove 14 in sequence, that is, when the long pin 10 is meshed with the inner transverse groove 12, the long pin 10 can be limited so that the long pin 10 and the two incomplete thread frames 9 are at the innermost end, that is, the incomplete thread frame 9 and the thread The cylinder 19 is stably engaged. When the long pin 10 is engaged with the short oblique groove 13, the long pin 10 and the incomplete thread frame 9 can be driven to move outward when the track plate 11 moves backward, and the long pin 10 and the incomplete thread frame 9 can be moved inward when the track plate 11 moves forward; when the long pin 10 is engaged with the outer transverse groove 14, the long pin 10 and the incomplete thread frame 9 can be at the outermost end, that is, the incomplete thread frame 9 can be disengaged; that is, when the track plate 11 moves, the two incomplete thread frames 9 can be controlled to move outward or inward; that is, the incomplete thread frame 9 is controlled to engage or disengage with the threaded cylinder 19.

[0033] The front end surface of the track plate 11 is respectively fixed with a first tension spring 15, and the front end of the first tension spring 15 is respectively fixed with a tension spring seat 16 fixed to the cabinet body 1; the rear end surfaces of the two track plates 11 are each fixed with a U-shaped handle 8, and the rear side of the upper end surface of the cabinet body 1 is also respectively fixed with a plurality of U-shaped seats 3, the inner walls of the U-shaped seats 3 are respectively fixed with square boxes 4, the inner walls of the square boxes 4 are respectively slidably connected with wedge-shaped blocks 5 that match the U-shaped handle 8, and the inner walls of the bottom ends of the square boxes 4 are respectively fixed with first springs 7 that match the wedge-shaped blocks 5.

[0034] like Figure 5-6As shown, the tension spring seat 16 supports and fixes the first tension spring 15. The first tension spring 15 always exerts a forward pulling force on the track plate 11, so that the track plate 11 is at the front end position under normal conditions, that is, the corresponding long pin 10 is engaged with the inner transverse groove 12, that is, the incomplete threaded frame 9 is stably engaged with the threaded tube 19; the wedge-shaped block 5 can be slidably connected to the inner wall of the square box 4 up and down, and the upper end surface of the wedge block is fixed with a pull rod 6, which can be slidably connected to the inner wall of the square box 4 up and down, that is, the pull rod 6 is driven up and down When moving, the wedge block 5 can be driven to move up and down; the first spring 7 always has a downward elastic force on the wedge block 5, so that the wedge block 5 is at the bottom position under normal conditions; by driving the U-shaped handle 8 to move forward and backward, the two track plates 11 can be driven to move forward and backward synchronously. When the U-shaped handle 8 is driven to move backward, the track plate 11 will be driven to move backward, so that the two incomplete thread racks 9 move outward. When the U-shaped handle 8 moves backward to meet the inclined surface of the wedge block 5, the U-shaped handle 8 continues to move backward. When the wedge-shaped block 5 moves backward, it will drive the wedge-shaped block 5 to move upward. When the wedge-shaped block 5 moves upward, it will enter the inner wall of the square box 4 and compress the first spring 7. When the U-shaped handle 8 moves backward to the rear end position of the wedge-shaped block 5, that is, after it is out of contact with the wedge-shaped block 5, the wedge-shaped block 5 will move downward and reset under the elastic force of the first spring 7. When the wedge-shaped block 5 moves downward and resets, it will block the U-shaped handle 8 from moving forward, that is, it can make the two incomplete thread racks 9 at the outermost end and in a stable state, that is, it can control The incomplete threaded frame 9 is stably disengaged from the threaded barrel 19; when the incomplete threaded frame 9 needs to be moved inward to reset, the pull rod 6 is pulled upward, and the upward movement of the pull rod 6 will drive the corresponding wedge block 5 to move upward. When the wedge block 5 moves upward, it will no longer block the U-shaped handle 8. At this time, the U-shaped handle 8 and the track plate 11 will move forward and reset under the tension of the first tension spring 15, that is, the two incomplete threaded frames 9 will be driven to move inward and mesh with the threaded barrel 19 again.

[0035] A first handle 17 is fixedly connected to the outer surface of the driving cylinder 18, and the driving cylinder 18 is slidably connected to the inner wall of the threaded cylinder 19. A cylinder seat 20 is fixedly connected to the lower end surface of the threaded cylinder 19. Short guide rods 21 slidably connected to the cylinder seat 20 are respectively fixedly connected on both sides of the lower end surface of the driving cylinder 18. Second springs 22 matching the driving cylinder 18 are respectively sleeved on the outer surfaces of the short guide rods 21, and first guide plates 23 are respectively fixedly connected to the lower end surfaces of the short guide rods 21. The single teeth 26 are respectively slidably connected to the inner walls of the cylinder seat 20, and the inner ends of the two single teeth 26 are respectively fixedly connected to the first inclined grooves 25. The first guide plates 23 are respectively provided with first inclined grooves 24 matching the first inclined grooves 25, and the conical pressure pad 39 is rotatably connected to the lower end surface of the cylinder seat 20.

[0036] like Figure 8-10As shown, the drive cylinder 18 and the threaded cylinder 19 are spline-connected. When the drive cylinder 18 rotates, the threaded cylinder 19 can be driven to rotate, and the drive cylinder 18 can move up and down on the inner wall of the threaded cylinder 19. The function of the first handle 17 is to facilitate driving the drive cylinder 18 to rotate or move up and down. When the drive cylinder 18 rotates, the threaded cylinder 19 can be driven to rotate. The short guide rod 21 and the first guide plate 23 can be slidably connected to the inner wall of the cylinder seat 20 up and down, and the second spring 22 always has an upward driving force on the drive cylinder 18, even if the drive cylinder 18 and the first guide plate 23 are in a state of being moved upward, the second spring 22 always has an upward driving force on the drive cylinder 18. 3 is in the topmost state under normal conditions; the single tooth 26 can be slidably connected to the inner wall of the cartridge seat 20 to the left and right. When the first guide plate 23 moves upward, the two single teeth 26 can be driven to move inward through the meshing of the first inclined groove 25 and the first inclined groove 24. When the first guide plate 23 moves downward, the two single teeth 26 can be driven to move outward through the meshing of the first inclined groove 25 and the first inclined groove 24. When the two single teeth 26 move outward, they can mesh with the wide gear ring 38, thereby limiting the movement of the single teeth 26, the cartridge seat 20, and the drive cartridge 1. 8. The threaded cylinder 19 rotates, and when the two single teeth 26 move inward, they can be disengaged from the wide gear ring 38, that is, the corresponding driving cylinder 18, threaded cylinder 19, etc. can rotate; when the first handle 17 is rotated, the driving cylinder 18 and the threaded cylinder 19 can be rotated. When the threaded cylinder 19 rotates, through the threaded connection with the incomplete threaded frame 9, the threaded cylinder 19, the cylinder seat 20, the conical pressure pad 39, etc. can be moved downward synchronously. When the conical pressure pad 39 moves downward, it can squeeze the conical sealing pad 43 for sealing. After the sealing is completed, the driving cylinder 18 and the threaded cylinder 19 can be driven by the driving cylinder 19. The first handle 17 and the driving cylinder 18 move downward, which can cause the two single teeth 26 to move outward. After the single tooth 26 moves outward and meshes with the wide gear ring 38, the single tooth 26, the driving cylinder 18, the threaded cylinder 19, etc. can be limited to rotate, thereby preventing the threaded cylinder 19 and the conical pressure pad 39 from loosening; the wide gear ring 38 has a certain width, which can prevent the single tooth 26 from leaving the range of the wide gear ring 38 when moving up and down, that is, when the single tooth 26 moves upward or downward to a specified position and stops, the single tooth 26 will meet and mesh with the wide gear ring 38 when moving outward.

[0037] The conical pressure pad 39 is provided with second ear plates 40 at both ends of its outer surface. The inner walls of the second ear plates 40 are slidably connected with second guide rods 41 fixed to the cabinet 1. The outer surfaces of the second guide rods 41 are respectively covered with fourth springs 42 matching with the second ear plates 40.

[0038] like Figure 9-10As shown, the second guide rod 41 limits the second ear plate 40, so that the second ear plate 40 and the conical pressure pad 39 can only move up and down; when the conical pressure pad 39 moves downward to contact with the conical sealing pad 43, it has a certain friction force, and the conical pressure pad 39 is rotatably connected to the lower end surface of the cylinder seat 20, that is, the conical pressure pad 39 can be squeezed when the cylinder seat 20 moves downward, and the conical pressure pad 39 will not rotate; the fourth spring 42 always has an upward elastic force on the second ear plate 40 and the conical pressure pad 39, and the upper end surface of the second guide rod 41 is respectively fixed with an anti-slip plate, and the function of the anti-slip plate is to prevent the second ear plate 40 from being separated from the second guide rod 41; when the two incomplete threaded racks 9 move outward and are separated from the threaded barrel 19, the corresponding conical pressure pad 39 and the threaded barrel 19 will move upward and reset under the elastic force of the fourth spring 42, that is, the conical pressure pad 39 no longer squeezes the conical sealing pad 43.

[0039] The inner walls of the long pins 10 are fixedly connected with connecting rods 37, the inner ends of the two connecting rods 37 are fixedly connected with second guide plates 35, a clamping ring 29 that can move up and down is installed on the two second guide plates 35, the lower end surfaces of the single teeth 26 are fixedly connected with wedge-shaped clamping plates 27 that match the clamping ring 29, and the inner walls of the lower ends of the single teeth 26 are rotatably connected with rollers 28 that match the clamping ring 29.

[0040] like Figure 10-11As shown, by fixing the connecting rod 37 to the second guide plate 35, the second guide plate 35 can be driven to move outward or outward when the long pin 10 moves; the snap ring 29 can move up and down, and is in the topmost position under normal conditions, that is, the upper end surface of the snap ring 29 is in contact with the single tooth 26. When the two single teeth 26 are at the innermost end, the roller 28 can contact the upper end surface of the snap ring 29, and when the single tooth 26 rotates with the cylinder seat 20, the roller 28 can rotate. The friction between the single tooth 26 and the snap ring 29 can be reduced by the provided roller 28. When the single tooth 26 moves downward, the snap ring 29 can be squeezed to move downward; when the two single teeth 26 move from the inside to the outside, the two wedge-shaped clamping plates 27 will be driven to move from the inside to the outside. When the wedge-shaped clamping plates 27 move from the inside to the outside, they will meet the snap ring 29. , under the action of the inclined surface of the wedge-shaped clamping plate 27, the clamping ring 29 can move downward. When the wedge-shaped clamping plate 27 moves outward to be completely separated from the clamping ring 29, the clamping ring 29 will move upward and reset under the elastic force of the third spring 33, that is, at this time, the clamping ring 29 will block the wedge-shaped clamping plate 27 from moving inward, that is, the inner straight surface of the wedge-shaped clamping plate 27 will contact the outer surface of the clamping ring 29. At this time, the two single teeth 26 are at the outermost ends, and the single teeth 26 can be stably engaged with the wide gear ring 38, that is, the threaded barrel 19 can be locked to prevent the threaded barrel 19 from rotating; when it is necessary to move the single tooth 26 inward and reset, the corresponding clamping ring 29 is driven to move downward and no longer block the wedge-shaped clamping block, and the wedge-shaped clamping block, the single tooth 26, etc. will move inward and reset under the elastic force of the second spring 22, that is, the single tooth 26 is no longer engaged with the wide gear ring 38.

[0041] The sealing device also includes two limit plates 30 fixed to the cabinet body 1, and square sliders 31 are slidably connected to the outer end surfaces of the two limit plates 30 respectively, and the upper end surfaces of the square sliders 31 are respectively fixed to the first guide rods 32, and the left and right ends of the outer surface of the clamping ring 29 are respectively provided with first ear plates 47, and the first ear plates 47 are respectively slidably connected to the outer surfaces of the first guide rods 32, and the outer surfaces of the first guide rods 32 are also respectively sleeved with third springs 33 that match the first ear plates 47, and the inner walls of the square sliders 31 are respectively fixed to second sliding pins 34, and the second guide plates 35 are respectively provided with second inclined grooves 36 that match the second sliding pins 34.

[0042] like Fig.11As shown, the limiting plate 30 serves to limit and fix the other slider 31, the first guide rod 32 and other components. The square slider 31 can be slidably connected to the outer end surface of the limiting plate 30 up and down, and the first ear plate 47 can be slidably connected to the outer surface of the first guide rod 32 up and down, that is, the limiting clamping ring 29 can move up and down; the third spring 33 always has an upward driving force on the first ear plate 47 and the clamping ring 29, even if the clamping ring 29 is at the top position of the first guide rod 32 under normal conditions, the upper end surface of the first guide rod 32 is also fixed with an anti-slip pad, which can prevent the first ear plate 47 from being separated from the first guide rod 32; by setting Under the cooperation of the second guide plate 35, the second inclined groove 36 and the second sliding pin 34, when the two second guide plates 35 move outward, the second sliding pin 34, the square slider 31, the first guide rod 32, the snap ring 29 and the like can be driven to move downward synchronously under the meshing of the second sliding pin 34 and the second inclined groove 36. When the snap ring 29 moves downward until it is out of contact with the wedge-shaped block, the single tooth 26 can move inward to reset, that is, to be out of meshing with the wide gear ring 38; when the two second guide plates 35 move inward, the second sliding pin 34, the square slider 31, the snap ring 29 and the like can be driven to move upward, even if the snap ring 29 is at the topmost state; Therefore, when the long pin 10 is at the innermost end, the corresponding snap ring 29 is at the topmost position and can cooperate with the wedge-shaped block at any time. The two incomplete threaded frames 9 are at the innermost end position and can be stably meshed with the threaded barrel 19. At this time, rotating the first handle 17 can move the threaded barrel 19 and the conical pressure pad 39 downward to the specified position, that is, the conical sealing pad 43 is squeezed and sealed, and when the first handle 17 is driven to move downward, the two single teeth 26 are driven to move outward. When the single tooth 26 moves outward to the top, it can mesh with the wide gear ring 38, and under the cooperation of the wedge-shaped block and the snap ring 29, it can The single tooth 26 is stably meshed with the wide gear ring 38, thereby preventing the threaded barrel 19 from rotating; when disassembly and resetting are required, the U-shaped handle 8 is driven to move the two long pins 10 outward, which will cause the incomplete threaded frame 9 to move outward and disengage from the threaded barrel 19. When the long pins 10 move outward, they will drive the second guide plate 35 to move outward, allowing the retaining ring 29 to move downward and disengage from the wedge-shaped block. At this time, the wedge-shaped block and the single tooth 26 will move inward and reset under the elastic force of the second spring 22, and the corresponding single tooth 26 will no longer mesh with the wide gear ring 38, so that the device can be quickly reset, thereby facilitating disassembly.

[0043] A heat dissipation pipe 45 is disposed at one side of the cabinet 1 . The upper end of the heat dissipation pipe 45 is an air inlet and the lower end is an air outlet. A rotatable fan blade 44 is disposed at the air inlet. A heat dissipation fin 46 is disposed on the outer surface of the heat dissipation pipe 45 .

[0044] like Fig.12As shown, the inner wall of the cabinet 1 is also provided with a motor, and the fan blades 44 are fixedly connected to the output end of the motor. The function of the motor is to provide rotational force for the fan blades 44. The motor is a prior art and is not described in detail. The heat dissipation of the cabinet 1 can be accelerated by the heat dissipation pipe 45, thereby preventing the internal temperature of the cabinet 1 from being too high and slowing down the aging rate of electrical components. The heat dissipation efficiency can be improved by the heat sink 46. When the fan blades 44 are working, hot air can enter the heat dissipation pipe 45 from the air inlet, and the hot air can be cooled and dissipated under the heat dissipation of the heat sink 46, and then flow out from the air outlet for circulation.

[0045] When the present invention is in use, the wire is passed through the inner wall of the conical sealing pad 43, and the first handle 17 is driven to rotate the threaded barrel 19. Under the cooperation of the threaded barrel 19 and the two incomplete threaded racks 9, the threaded barrel 19 can move downward when rotating, and the threaded barrel 19 can drive the conical pressure pad 39 to move downward when moving downward. When the conical pressure pad 39 moves downward, it will squeeze the conical sealing pad 43. The conical sealing pad 43 is made of rubber. After being squeezed, the conical sealing pad 43 can shrink inward and can be close to the outer surface of the wire, thereby sealing the wire and preventing external gas from entering the cabinet door 2. When it is necessary to lock the threaded barrel 19, That is, in normal conditions, the threaded barrel 19 is prevented from rotating. By driving the first handle 17 to move the driving barrel 18 downward, the two single teeth 26 can be moved outward to mesh with the wide gear ring 38. When the wide gear ring 38 meshes with the single teeth 26, the driving barrel 18 and the threaded barrel 19 can be restricted from rotating, thereby preventing the threaded barrel 19 from loosening and enhancing the sealing effect. The two incomplete threaded racks 9 can also move outward. When the wire needs to be disassembled and replaced, the two incomplete threaded racks 9 can be disengaged from the threaded barrel 19 by moving them outward, that is, the incomplete threaded racks 9 are disengaged from the threaded barrel 19. At this time, the threaded barrel 19 can be quickly moved upward to reset. Thus, the wire can be quickly disassembled and replaced.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An explosion-proof electrical cabinet, comprising a cabinet body (1), characterized in that: The cabinet (1) is provided with a plurality of wire openings at the upper end, and sealing devices are respectively provided at the wire openings, the sealing devices comprising a conical sealing pad (43), the sealing device also comprising a rotatable threaded cylinder (19), the lower end of the threaded cylinder (19) is respectively provided with a conical pressure pad (39) matched with the conical sealing pad (43), the sealing device also comprising two incomplete threaded racks (9) matched with the threaded cylinder (19), when the threaded cylinder (19) rotates, the conical pressure pad (39) can move downward to press the conical sealing pad (43); the inner wall of the threaded cylinder (19) is also provided with a driving cylinder (18) that can move up and down, the lower ends of the driving cylinder (18) are respectively provided with single teeth (26), the upper end surface of the cabinet (1) is fixedly connected with a wide tooth ring (38) matched with the single tooth (26), when the driving cylinder (18) moves downward, the two single teeth (26) can be moved outward to mesh with the wide tooth ring (38).

2. An explosion-proof electrical cabinet according to claim 1, characterized in that: The incomplete threaded racks (9) are respectively slidably connected to the upper end surface of the cabinet (1), and the upper end surface of the cabinet (1) is also slidably connected to a plurality of track plates (11) capable of moving forward and backward, and the track plates (11) are respectively provided with track grooves. The lower end surfaces of the incomplete threaded racks (9) are respectively fixed with long pins (10) matched with the track grooves, and the track grooves respectively include inner transverse grooves (12), short oblique grooves (13) and outer transverse grooves (14). When the inner transverse grooves (12) are meshed with the long pins (10), when the track grooves are moved, the inner transverse grooves (12) and the long pins (10) are engaged with each other, and the track grooves (13) and the outer transverse grooves (14) are respectively fixed with each other. When the track plate (11) moves backward, the long pin (10) and the two incomplete thread racks (9) can be located at the innermost end. When the short oblique groove (13) is engaged with the long pin (10), when the track plate (11) moves backward, the long pin (10) and the two incomplete thread racks (9) can be moved outward. When the outer transverse groove (14) is engaged with the long pin (10), when the track plate (11) moves backward, the long pin (10) and the two incomplete thread racks (9) can be located at the outermost end.

3. An explosion-proof electrical cabinet as claimed in claim 2, characterized in that: The front end surface of the track plate (11) is respectively fixedly connected to a first tension spring (15), and the front end of the first tension spring (15) is respectively fixedly connected to a tension spring seat (16) fixed to the cabinet (1); the rear end surfaces of the two track plates (11) are each fixedly connected to a U-shaped handle (8), and the rear side of the upper end surface of the cabinet (1) is also respectively fixedly connected to a plurality of U-shaped seats (3), and the inner walls of the U-shaped seats (3) are respectively fixedly connected to square boxes (4), and the inner walls of the square boxes (4) are respectively slidably connected to wedge-shaped blocks (5) matching the U-shaped handles (8), and the inner walls of the bottom ends of the square boxes (4) are respectively fixedly connected to first springs (7) matching the wedge-shaped blocks (5).

4. An explosion-proof electrical cabinet according to claim 1, characterized in that: A first handle (17) is fixedly connected to the outer surface of the driving cylinder (18), the driving cylinder (18) is slidably connected to the inner wall of the threaded cylinder (19), a cylinder seat (20) is fixedly connected to the lower end surface of the threaded cylinder (19), short guide rods (21) slidably connected to the cylinder seat (20) are respectively fixedly connected to both sides of the lower end surface of the driving cylinder (18), second springs (22) matching with the driving cylinder (18) are respectively sleeved on the outer surface of the short guide rod (21), and first guide plates (23) are respectively fixedly connected to the lower end surface of the short guide rod (21), the single teeth (26) are respectively slidably connected to the inner wall of the cylinder seat (20), the inner side ends of the two single teeth (26) are respectively fixedly connected to the first inclined grooves (25), and the first guide plates (23) are respectively provided with first inclined grooves (24) matching with the first inclined grooves (25), and the conical pressure pad (39) is rotatably connected to the lower end surface of the cylinder seat (20).

5. An explosion-proof electrical cabinet according to claim 1, characterized in that: The conical pressure pad (39) is provided with second ear plates (40) at the front and rear ends of the outer surface, respectively; the inner walls of the second ear plates (40) are slidably connected with second guide rods (41) fixed to the cabinet (1); and the outer surfaces of the second guide rods (41) are respectively sleeved with fourth springs (42) matching with the second ear plates (40).

6. An explosion-proof electrical cabinet according to claim 1, characterized in that: The inner wall of the long pin (10) is fixedly connected with a connecting rod (37), the inner ends of the two connecting rods (37) are fixedly connected with a second guide plate (35), a clamping ring (29) that can move up and down is installed on the two second guide plates (35), the lower end surface of the single tooth (26) is fixedly connected with a wedge-shaped clamping plate (27) that matches the clamping ring (29), and the inner wall of the lower end of the single tooth (26) is rotatably connected with a roller (28) that matches the clamping ring (29).

7. An explosion-proof electrical cabinet according to claim 6, characterized in that: The sealing device further comprises two limit plates (30) fixed to the cabinet (1), the outer end surfaces of the two limit plates (30) are respectively slidably connected with square sliders (31), the upper end surfaces of the square sliders (31) are respectively fixedly connected with first guide rods (32), the left and right ends of the outer surface of the clamping ring (29) are respectively provided with first ear plates (47), the first ear plates (47) are respectively slidably connected to the outer surface of the first guide rod (32), the outer surface of the first guide rod (32) is also respectively sleeved with third springs (33) matched with the first ear plates (47), the inner walls of the square sliders (31) are respectively fixedly connected with second sliding pins (34), and the second guide plates (35) are respectively provided with second inclined grooves (36) matched with the second sliding pins (34).

8. An explosion-proof electrical cabinet according to claim 1, characterized in that: A heat dissipation pipe (45) is provided at one side end of the cabinet (1); the upper end of the heat dissipation pipe (45) is an air inlet and the lower end is an air outlet; a rotatable fan blade (44) is provided at the air inlet; and a heat dissipation fin (46) is provided on the outer surface of the heat dissipation pipe (45).

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