A high voltage AC metal enclosed ring network switch device and use method

Abstract

The present invention relates to the field of ring network switch technology, specifically to a high-voltage AC metal-enclosed ring network switch device and a method of use, including a box body, a box door is arranged on the front of the box body, and the box door is rotatably connected in the box body through a door shaft. This high-voltage AC metal-enclosed ring network switch device and method of use, drives the main bevel gear to rotate through a handle, and uses the transmission bevel gear to drive the secondary bevel gear and the horizontal axis to rotate, and the cam that rotates with the horizontal axis pushes the support leg to slide outward along the through groove on one hand, and abuts against other objects to fix the box body, and pushes the other part to slide directly inward along the through groove, and clamps and fixes along the object inside the box leg. Compared with the existing plug-in lock with a preset base, the above-mentioned support leg that slides inside and outside can lock the box body along any fixed object without the need to pre-set a special connector for fixing, which can effectively improve the installation flexibility of the overall equipment, and can also improve the installation efficiency by installing it as it arrives.

Description

Technical Field

[0001] The present invention relates to the technical field of ring network switches, and in particular to a high-voltage alternating current metal-enclosed ring network switch device and a use method thereof. Background Art

[0002] At present, the urban and rural power supply in my country mainly adopts the high-voltage ring network mode for power supply. In the high-voltage ring network power supply system, the control switch equipment of the high-voltage part currently used is mainly the high-voltage ring network switch equipment, which is mainly composed of a control cabinet and high-voltage circuit breakers, high-voltage disconnectors and many circuit monitoring and control electrical components installed inside the control cabinet. The current high-voltage ring network switch equipment has the characteristics of stable operation and low cost, and its application volume is very large. However, the installation process of the existing high-voltage AC metal-enclosed ring network switch equipment is relatively complicated.

[0003] The existing patent (publication number: CN111371034A) discloses a high-voltage AC metal-enclosed ring network switchgear, which is installed by inserting a fixing plate into a mounting seat and fixed by a fixing rod, and the fixing effect of the device is improved by the engagement of the upper fixing teeth and the lower fixing teeth. At the same time, when there is a problem with the internal components of the device, the mounting plate is rotated to facilitate the maintenance and replacement of the components. The overall operation is simple and convenient, the installation efficiency is high, and the fixing effect is good, which is convenient for later maintenance and has strong practicality; it includes a box body and a box door; it also includes a partition, two sets of slides, two sets of slides, two sets of fixed frames, two sets of rotating shafts, two sets of mounting plates, a circuit breaker module, an electrical control module, a base, two sets of mounting seats, two sets of fixing plates, two sets of fixing rods, two sets of reset boxes, two sets of reset springs and two sets of limit plates. The partition is fixedly arranged inside the box body and the inside of the box body is divided into a left cavity and a right cavity. The installation structure of the above-mentioned existing ring network switchgear needs to be matched with a preset base for corresponding insertion, which is difficult to be installed with transportation, and has great limitations and is difficult to be applied to different positions.

[0004] In view of this, we propose a high-voltage AC metal-enclosed ring network switch device and a use method. Summary of the invention

[0005] The purpose of the present invention is to provide a high-voltage AC metal-enclosed ring network switch device and a method of use, so as to solve the problem that the installation structure of the existing ring network switch device proposed in the above background technology needs to be matched with a preset base for corresponding insertion, which is difficult to be installed during transportation, has great limitations, and is difficult to be applied to different locations. To achieve the above purpose, the present invention provides the following technical solutions: A high-voltage AC metal-enclosed ring network switch device includes a box body, a box door is provided on the front of the box body, and the box door is rotatably connected to the box body through a door shaft.

[0006] The bottom of the box body is extended downward to form an annular box foot, and top locks are arranged in the box foot and the left and right side wall panels of the box body.

[0007] The top lock includes a wall groove opened on the side wall panel of the box body, and a vertical axis is fixedly arranged in the wall groove, a notch is opened at the top of the vertical axis, and a handle is arranged in the notch, a rotating shaft is fixedly passed through the end of the handle close to the vertical axis, and the handle is rotatably connected in the notch through the rotating shaft.

[0008] One end of the rotating shaft close to the outside passes through the vertical shaft and extends to the outside, and the outer end of the rotating shaft is installed with a main bevel gear through a one-way bearing.

[0009] A shaft sleeve is rotatably sleeved on the surface of the vertical shaft, and both ends of the shaft sleeve are fixedly connected with transmission bevel gears, and the transmission bevel gear on the upper side is meshed with the main bevel gear.

[0010] The surface of the transmission bevel gear on the upper side is provided with an annular latching tooth, the side surface of the vertical shaft is fixedly provided with a sliding sleeve, and a spring pin that pops out downward is provided in the sliding sleeve, and the bottom end of the spring pin is provided with a helical tooth that matches the latching tooth.

[0011] A pull wire is movably arranged inside the handle, one end of the pull wire is arranged on the spring pin, and the other end of the pull wire is located at the gripping part of the handle.

[0012] The wall panels on the side and back of the box foot are provided with inner grooves connected to the wall grooves, and a horizontal axis is rotatably arranged in the inner groove. A secondary bevel gear is fixedly arranged at one end of the horizontal axis relative to the vertical axis, and the secondary bevel gear is meshed with the lower transmission bevel gear.

[0013] A plurality of through grooves are provided on the wall plates on the side and back of the box foot, and the through grooves are communicated with the inner grooves on the same side.

[0014] The interior of the through slot is slidably connected with a support foot, and the support foot is set as a C-shaped structure.

[0015] Two adjacent supporting legs are arranged opposite to each other.

[0016] A plurality of cams corresponding to the supporting feet are installed on the surface of the horizontal axis, and two adjacent cams are staggered in an up-and-down manner.

[0017] The cams on the upper and lower sides push the corresponding legs to slide outward and inward respectively.

[0018] The handle, the shaft sleeve, the cam and the horizontal shaft are provided with a switching component.

[0019] Preferably, the switching assembly includes two oil cylinders fixedly arranged at the bottom of the handle, and the oil is pressed and returned by screwing bolts on the oil cylinders.

[0020] An oil seat is movably sleeved on the surface of the shaft sleeve, and an axial hole is opened on one side of the surface of the oil seat opposite to the horizontal axis, and the end of the horizontal axis is rotatably connected in the axial hole.

[0021] The inner ring of the shaft hole is provided with an annular oil groove.

[0022] The two oil cylinders are connected to the oil seat through oil pipes, and the two oil cylinders are communicated with the shaft hole and the oil groove respectively. Two oil passages are opened inside the transverse axis, and the two oil passages are communicated with the shaft hole and the oil groove respectively.

[0023] The surface of the transverse axis is provided with a connecting groove corresponding to the cam, and the cam is rotatably sleeved in the connecting groove, a pressing ring is slidably connected in the connecting groove, and a plunger is fixedly arranged on the side surface of the pressing ring.

[0024] The oil passage penetrates along the side wall of the connecting groove, and the plunger is slidably connected in the oil passage.

[0025] The box body, the door shaft and the sliding sleeve are provided with a safety component.

[0026] Preferably, the safety component includes a slide groove opened inside the box body, and the slide groove is connected to the wall groove. The inside of the slide groove is slidably connected with a pin, and a top spring is arranged in the slide groove. The top spring pushes the pin to move toward the sliding sleeve. The end of the pin close to the inner groove passes through the sliding sleeve and presses against the spring pin.

[0027] The door shaft extends into the slide groove, and a rubber protrusion is arranged at the bottom end of the door shaft, and a slot matching with the rubber protrusion is arranged on the surface of the latch.

[0028] A damper is arranged inside the slide groove to slow down the movement of the latch pin toward the slide sleeve.

[0029] Preferably, a slip ring is slidably connected to the handle, and the pull wire is fixedly connected to the slip ring.

[0030] Preferably, a cover plate is fixedly installed in the wall groove by means of buckles.

[0031] Preferably, anti-slip teeth are provided on the contact side surfaces of the supporting legs.

[0032] Preferably, locking teeth are provided on the opposite side of the pressure ring and the cam surface.

[0033] A method for using a high-voltage AC metal-enclosed ring network switch device comprises the following steps:

[0034] S1. When the box is moved to the installation location, pull up the handle to drive the main bevel gear to rotate, and use the transmission bevel gear to drive the secondary bevel gear and the horizontal axis to rotate. During this process, the upper transmission bevel gear is locked in one direction by the spring pin using the latch teeth and will not rotate. The cam that rotates with the horizontal axis pushes the support leg to slide outward along the through slot and abut against other objects to fix the box, and pushes the other part to slide directly inward along the through slot and clamp and fix the object inside the box leg;

[0035] S2. Before using the handle to pop out the support leg for installation, rotate the bolts on the two oil cylinders to squeeze the internal hydraulic oil. The oil in the two oil pipes is respectively injected into the shaft hole and the oil groove, and enters the two oil channels respectively. At this time, the oil pressure pushes the plunger to move and presses the pressure ring on the cam to connect the cam with the horizontal axis. The two oil cylinders correspond to the cams of the inner sliding and outer sliding support legs respectively. The oil cylinder that has not been screwed in the bolt will not push out the pressure ring. At this time, the cam is not driven by the horizontal axis and will not push out the support leg;

[0036] S3. When installing and unlocking the installed box, use the pull wire to pull the spring pin upwards. At this time, the latching teeth and the upper bevel gear are unlocked, and the support foot loses the driving force of the cam. Push the support foot into the through slot to carry the box;

[0037] S4. The top spring inside the box body pushes the latch to press against the spring pin to lock it. The operator cannot directly use the pull wire to pull the spring pin to unlock it. At this time, the box door needs to be opened and then closed. During this process, the rubber protrusion at the bottom of the door shaft performs reciprocating circular motion and squeezes into the slot when the box door is opened. As the box door is closed, the latch compresses the top spring and moves forward. At this time, the latch is disengaged from the spring pin, and the operator can operate the spring pin to unlock the support leg.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] In the present invention, the main bevel gear is driven to rotate by the handle, and the transmission bevel gear is used to drive the secondary bevel gear and the horizontal axis to rotate. The cam that rotates with the horizontal axis pushes the support foot to slide outward along the through groove on one hand, and abuts against other objects to fix the box body, and pushes the other part to slide directly inward along the through groove, and clamps and fixes the object on the inner side of the box foot. Compared with the existing plug-in lock with a preset base, the above-mentioned support foot that slides inside and outside can lock the box body along any fixed object without the need to pre-set special connecting parts for fixing. This can effectively improve the installation flexibility of the overall equipment, and can also improve the installation efficiency when it is installed as soon as it arrives.

[0040] In the present invention, the internal hydraulic oil is squeezed by rotating the bolts on the oil cylinder, and the oil in the two oil pipes is respectively injected into the shaft hole and the oil groove, and enters the two oil channels respectively. At this time, the oil pressure pushes the plunger to move and presses the pressure ring onto the cam, so that the cam is connected to the horizontal axis. The two oil cylinders correspond to the cams of the inner sliding and outer sliding legs respectively. The oil cylinder without the bolts screwed in will not push out the pressure ring. At this time, the cam is not driven by the horizontal axis and will not push out the leg, so that the operator can independently control the inner and outer sliding pop-up of the leg, and choose external card fixation or internal clamp fixation according to the specific installation position, so that the installation of the equipment has more comprehensive scene adaptability.

[0041] In the present invention, during the process of opening and closing the door, the rubber protrusion at the bottom of the door shaft performs reciprocating circular motion and squeezes into the slot when the door is opened. As the door is closed, the latch compresses the top spring and moves forward. At this time, the latch disengages from the spring pin, and the operator can operate the spring pin to unlock the support leg. Compared with the existing direct external disassembly, the sliding pin can continuously lock the spring pin for safety. Only after the operator opens the door to disconnect the internal electrical components, closes for inspection, and closes the door, can it be automatically unlocked and the equipment can be disassembled. The possibility of the operator being lazy and operating in violation of regulations can be reduced by limiting the operating steps, thereby avoiding safety hazards during the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0043] Figure 2 It is a three-dimensional structural cross-sectional view of the box body and the wall groove of the present invention;

[0044] Figure 3 It is a three-dimensional structural cross-sectional view of the slideway of the present invention;

[0045] Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle;

[0046] Figure 5 It is a three-dimensional structural cross-sectional view of the inner groove and the through groove of the present invention;

[0047] Figure 6 For the present invention Figure 5 The enlarged view of point B in the middle;

[0048] Figure 7 It is a schematic diagram of the steering of the shaft sleeve, the horizontal shaft and the cam of the present invention;

[0049] Figure 8 It is a three-dimensional structural cross-sectional view of the handle of the present invention;

[0050] Fig. 9 For the present invention Figure 8 Enlarged view of point C in the middle;

[0051] Fig.10 For the present invention Figure 8 The enlarged view of point D in the middle;

[0052] Fig.11 It is a three-dimensional structural cross-sectional view of the horizontal axis of the present invention;

[0053] Fig.12 For the present invention Fig.11 Enlarged view of point E in the middle;

[0054] Fig.13 For the present invention Fig.11Enlarged view of point F in the middle.

[0055] In the figure: 1, box body; 2, box door; 3, door shaft; 4, box foot; 5, top lock; 51, wall groove; 52, vertical axis; 53, missing groove; 54, handle; 55, rotating shaft; 56, main bevel gear; 57, shaft sleeve; 58, transmission bevel gear; 59, latching gear; 510, sliding sleeve; 511, spring pin; 512, pull wire; 513, inner groove; 514, horizontal axis; 515, auxiliary bevel gear; 516, through groove; 517, support foot; 518, cam; 519, cutting Replacement components; 5191, oil cylinder; 5192, bolt; 5193, oil seat; 5194, shaft hole; 5195, oil groove; 5196, oil pipe; 5197, oil channel; 5198, connecting groove; 5199, pressure ring; 51910, plunger; 51911, insurance component; 519111, slide groove; 519112, latch; 519113, top spring; 519114, rubber protrusion; 519115, slot; 519116, damper. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in this field without creative work are within the scope of protection of the present invention.

[0057] See also Figures 1 to 13 The present invention provides a technical solution: a high-voltage AC metal-enclosed ring network switch device, including a box body 1, a box door 2 is arranged on the front of the box body 1, and the box door 2 is rotatably connected to the box body 1 through a door shaft 3.

[0058] The bottom of the box body 1 is extended downward to form an annular box foot 4, and top locks 5 are arranged in the box foot 4 and the left and right side wall panels of the box body 1.

[0059] The top lock 5 includes a wall groove 51 opened on the side wall panel of the box body 1, and a vertical shaft 52 is fixedly arranged in the wall groove 51, a notch 53 is opened at the top of the vertical shaft 52, and a handle 54 is arranged in the notch 53, and a rotating shaft 55 is fixedly passed through the end of the handle 54 close to the vertical shaft 52, and the handle 54 is rotatably connected in the notch 53 through the rotating shaft 55.

[0060] One end of the rotating shaft 55 close to the outside passes through the vertical shaft 52 and extends to the outside, and the outer end of the rotating shaft 55 is installed with a main bevel gear 56 through a one-way bearing. By pulling up the handle 54, the rotating shaft 55 can be used to drive the main bevel gear 56 to rotate, and the one-way bearing can prevent the main bevel gear 56 from being driven when the handle 54 is pressed down to reset.

[0061] A shaft sleeve 57 is rotatably sleeved on the surface of the vertical shaft 52, and transmission bevel gears 58 are fixedly connected to both ends of the shaft sleeve 57. The upper transmission bevel gear 58 is meshed with the main bevel gear 56, and the rotating main bevel gear 56 drives the transmission bevel gear 58 and the shaft sleeve 57 to rotate.

[0062] The surface of the upper transmission bevel gear 58 is provided with an annular locking tooth 59, the side surface of the vertical shaft 52 is fixedly provided with a sliding sleeve 510, and a spring pin 511 that pops out downward is provided in the sliding sleeve 510, and the bottom end of the spring pin 511 is set as a helical tooth that matches the locking tooth 59. During the rotation of the upper transmission bevel gear 58, the locking tooth 59 is used to be unidirectionally locked by the spring pin 511 and will not rotate.

[0063] A pull wire 512 is movably provided inside the handle 54, one end of the pull wire 512 is set on the spring pin 511, and the other end of the pull wire 512 is located at the gripping part of the handle 54. When the installed box 1 is installed and unlocked, the pull wire 512 is used to pull the spring pin 511 upward. At this time, the latch tooth 59 and the upper bevel gear are unlocked, and the support foot 517 loses the driving force of the cam 518.

[0064] The wall panels on the side and back of the box foot 4 are both provided with inner grooves 513 connected to the wall grooves 51, and a horizontal shaft 514 is rotatably arranged in the inner groove 513. A secondary bevel gear 515 is fixedly arranged at one end of the horizontal shaft 514 relative to the vertical shaft 52, and the secondary bevel gear 515 is meshed with the lower transmission bevel gear 58.

[0065] A plurality of through slots 516 are formed on the side and back wall panels of the box foot 4 , and the through slots 516 are connected to the inner slots 513 on the same side.

[0066] A support leg 517 is slidably connected inside the through slot 516 , and the support leg 517 is configured as a C-shaped structure.

[0067] Two adjacent supporting legs 517 are arranged opposite to each other.

[0068] A plurality of cams 518 corresponding to the legs 517 are mounted on the surface of the horizontal shaft 514 , and two adjacent cams 518 are staggered in an up-and-down manner.

[0069] The cams 518 on the upper and lower sides push the corresponding supporting feet 517 to slide outward and inward respectively, and the transmission bevel gear 58 drives the secondary bevel gear 515 and the horizontal shaft 514 to rotate. The cam 518 that rotates along the horizontal shaft 514 pushes the supporting feet 517 to slide outward along the through groove 516 on one hand, and abuts against other objects to fix the box body 1, and pushes the other part to slide directly inward along the through groove 516.

[0070] A switching assembly 519 is disposed on the handle 54 , the sleeve 57 , the cam 518 , and the horizontal shaft 514 .

[0071] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 13 As shown, the switching assembly 519 includes two oil cylinders 5191 fixedly arranged at the bottom of the handle 54, and the oil cylinders 5191 are used to pressurize and return oil through screw bolts 5192.

[0072] An oil seat 5193 is movably sleeved on the surface of the shaft sleeve 57 , and an axial hole 5194 is opened on the side of the surface of the oil seat 5193 opposite to the horizontal axis 514 , and the end of the horizontal axis 514 is rotatably connected in the axial hole 5194 .

[0073] An annular oil groove 5195 is provided on the inner ring of the shaft hole 5194 .

[0074] The two oil cylinders 5191 are connected to the oil seat 5193 through the oil pipe 5196, and the two oil cylinders 5191 are respectively connected to the shaft hole 5194 and the oil groove 5195. Two oil passages 5197 are opened inside the transverse axis 514, and the two oil passages 5197 are respectively connected to the shaft hole 5194 and the oil groove 5195. The bolts 5192 on the two oil cylinders 5191 are rotated to squeeze the internal hydraulic oil, and the oil in the two oil pipes 5196 are respectively injected into the shaft hole 5194 and the oil groove 5195, and enter the two oil passages 5197 respectively.

[0075] A connecting groove 5198 corresponding to the cam 518 is formed on the surface of the horizontal shaft 514, and the cam 518 is rotatably sleeved in the connecting groove 5198. A pressure ring 5199 is slidably connected in the connecting groove 5198, and a plunger 51910 is fixedly provided on the side surface of the pressure ring 5199.

[0076] The oil passage 5197 passes through the side wall of the connecting groove 5198, and the plunger 51910 is slidably connected in the oil passage 5197. The oil pressure in the oil passage 5197 pushes the plunger 51910 to move and presses the pressure ring 5199 onto the cam 518, so that the cam 518 is connected to the horizontal shaft 514. The oil cylinder 5191 without the bolt 5192 screwed in will not push out the pressure ring 5199. At this time, the cam 518 is not driven by the horizontal shaft 514.

[0077] A safety component 51911 is provided on the box body 1 , the door shaft 3 and the sliding sleeve 510 .

[0078] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 13As shown, the safety component 51911 includes a slide groove 519111 opened inside the box body 1, and the slide groove 519111 is connected to the wall groove 51, the slide groove 519111 is internally slidably connected with a latch 519112, and a top spring 519113 is arranged in the slide groove 519111, the top spring 519113 pushes the latch 519112 to move toward the sliding sleeve 510, one end of the latch 519112 close to the inner groove 513 passes through the sliding sleeve 510 and presses on the spring pin 511, the top spring 519113 pushes the latch 519112 to press on the spring pin 511 to lock it, and the operator cannot directly use the pull wire 512 to pull the spring pin 511 to unlock it.

[0079] The door shaft 3 extends into the slide groove 519111, and a rubber protrusion 519114 is provided at the bottom end of the door shaft 3. A card groove 519115 matching with the rubber protrusion 519114 is provided on the surface of the latch 519112. In the process of opening and closing the box door 2, the rubber protrusion 519114 at the bottom of the door shaft 3 performs reciprocating circular motion and squeezes into the card groove 519115 when the box door 2 is opened. As the box door 2 is closed, the latch 519112 compresses the top spring 519113 and moves forward. At this time, the latch 519112 is separated from the spring pin 511.

[0080] A damper 519116 is arranged inside the slide groove 519111 to slow down the movement of the latch 519112 toward the sleeve 510. After the door 2 is closed, the rubber protrusion 519114 is disengaged from the slot 519115, and the top spring 519113 pushes the latch 519112 back to its original position. The damper 519116 is used to slow down the displacement speed of the latch 519112 to ensure that the operator has enough time to unlock the spring pin 511.

[0081] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 13 As shown, a slip ring is slidably connected to the handle 54 , and the pull wire 512 is fixedly connected to the slip ring. When the handle 54 is grasped, the pull wire 512 can be conveniently pulled through the slip ring to control the spring pin 511 .

[0082] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 13 As shown, a cover plate is fixedly installed in the wall groove 51 by means of a buckle. Under normal circumstances, the cover plate closes the wall groove 51 to prevent dust and other debris from affecting the use of the operating components. When the handle 54 needs to be operated, the cover plate can be quickly removed.

[0083] In this embodiment, Figure 1 , Figure 2, Figure 3 , Figure 4 , Figures 5 to 13 As shown, the side surfaces of the legs 517 used for contact are provided with anti-skid teeth. When each leg 517 slides outward or inward to fix the box body 1, the legs 517 can use the anti-skid teeth to improve the contact stability and avoid slipping.

[0084] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 13 As shown, locking teeth are provided on opposite sides of the pressure ring 5199 and the cam 518 surface. The pressure ring 5199 and the cam 518 can be more stably engaged and connected through the locking teeth, and the transmission stability of the horizontal axis 514 to the cam 518 can be ensured.

[0085] A method for using a high-voltage AC metal-enclosed ring network switch device comprises the following steps:

[0086] S1. When the box body 1 is moved to the installation position, the handle 54 is pulled up to drive the main bevel gear 56 to rotate, and the transmission bevel gear 58 is used to drive the secondary bevel gear 515 and the horizontal shaft 514 to rotate. During this process, the upper transmission bevel gear 58 is locked in one direction by the spring pin 511 using the latch tooth 59 and will not rotate. The cam 518 that rotates with the horizontal shaft 514 pushes the support leg 517 to slide outward along the through groove 516 on one hand, and abuts against other objects to fix the box body 1, and pushes the other part to slide directly inward along the through groove 516, and clamps and fixes the object on the inner side of the box foot 4.

[0087] S2. Before using the handle 54 to pop out the support leg 517 for installation, rotate the bolts 5192 on the two oil cylinders 5191 to squeeze the internal hydraulic oil. The oil in the two oil pipes 5196 is respectively injected into the shaft hole 5194 and the oil groove 5195, and enters the two oil channels 5197 respectively. At this time, the oil pressure pushes the plunger 51910 to move, and presses the pressure ring 5199 on the cam 518, so that the cam 518 is connected to the horizontal axis 514. The two oil cylinders 5191 correspond to the cams 518 of the inner sliding and outer sliding support legs 517 respectively. The oil cylinder 5191 that has not screwed in the bolt 5192 will not push out the pressure ring 5199. At this time, the cam 518 is not driven by the horizontal axis 514 and will not push out the support leg 517.

[0088] S3. When the installed box 1 is installed and unlocked, the spring pin 511 is pulled upward by the pull wire 512. At this time, the latch 59 and the upper bevel gear are unlocked, and the support leg 517 loses the driving force of the cam 518. The support leg 517 is pushed into the through groove 516 to carry the box 1.

[0089] S4. The top spring 519113 inside the box body 1 pushes the latch 519112 to press against the spring pin 511 to lock it. The operator cannot pull the spring pin 511 to unlock it by directly using the pull wire 512. At this time, it is necessary to open the box door 2 and then close the box door 2. During this process, the rubber protrusion 519114 at the bottom of the door shaft 3 performs reciprocating circular motion and squeezes into the slot 519115 when the box door 2 is opened. As the box door 2 is closed, the latch 519112 compresses the top spring 519113 and moves forward. At this time, the latch 519112 is disengaged from the spring pin 511, and the operator can operate the spring pin 511 to unlock the support leg 517.

[0090] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high voltage AC metal enclosed ring network switchgear, comprising a box (1), characterized in that: The front of the box body (1) is provided with a box door (2), and the box door (2) is rotatably connected to the box body (1) via a door shaft (3); The bottom of the box body (1) is extended downward to form an annular box foot (4), and top locks (5) are arranged in the box foot (4) and the left and right side wall panels of the box body (1); The top lock (5) comprises a wall groove (51) formed on a side wall plate of the box body (1), and a vertical shaft (52) is fixedly arranged in the wall groove (51), a notch (53) is formed at the top end of the vertical shaft (52), and a handle (54) is arranged in the notch (53), a rotating shaft (55) is fixedly passed through the end of the handle (54) close to the vertical shaft (52), and the handle (54) is rotatably connected in the notch (53) via the rotating shaft (55); One end of the rotating shaft (55) close to the outside passes through the vertical shaft (52) and extends to the outside, and a main bevel gear (56) is installed on the outer end of the rotating shaft (55) via a one-way bearing; A shaft sleeve (57) is rotatably sleeved on the surface of the vertical shaft (52), and both ends of the shaft sleeve (57) are fixedly connected with a transmission bevel gear (58), and the transmission bevel gear (58) on the upper side is meshed with the main bevel gear (56); The surface of the transmission bevel gear (58) on the upper side is provided with an annular latching tooth (59), the side surface of the vertical shaft (52) is fixedly provided with a sliding sleeve (510), and a spring pin (511) that pops out downward is provided in the sliding sleeve (510), and the bottom end of the spring pin (511) is provided with a helical tooth that matches the latching tooth (59); A pull wire (512) is movably disposed inside the handle (54), one end of the pull wire (512) is disposed on the spring pin (511), and the other end of the pull wire (512) is located at the gripping portion of the handle (54); The wall panels on the side and back of the box foot (4) are provided with inner grooves (513) connected with the wall grooves (51), and a horizontal shaft (514) is rotatably arranged in the inner groove (513), and a secondary bevel gear (515) is fixedly arranged at one end of the horizontal shaft (514) relative to the vertical shaft (52), and the secondary bevel gear (515) is meshed with the lower transmission bevel gear (58); The wall panels on the side and back of the box foot (4) are provided with a plurality of through grooves (516), and the through grooves (516) are connected to the inner grooves (513) on the same side; The through slot (516) is slidably connected with a support leg (517), and the support leg (517) is configured as a C-shaped structure; Two adjacent supporting legs (517) are arranged opposite to each other; A plurality of cams (518) corresponding to the supporting feet (517) are installed on the surface of the transverse axis (514), and two adjacent cams (518) are staggered in an up-and-down manner; The cams (518) on the upper and lower sides push the corresponding legs (517) to slide outwards and inwards respectively; A switching assembly (519) is arranged on the handle (54), the shaft sleeve (57), the cam (518), and the horizontal shaft (514).

2. A high voltage AC metal enclosed ring network switchgear according to claim 1, characterized in that: The switching assembly (519) comprises two oil cylinders (5191) fixedly arranged at the bottom of the handle (54), and the oil cylinders (5191) are used to pressurize and return oil via screw bolts (5192); The surface of the shaft sleeve (57) is movably sleeved with an oil seat (5193), and a shaft hole (5194) is provided on the surface of the oil seat (5193) on a side opposite to the transverse axis (514), and the end of the transverse axis (514) is rotatably connected in the shaft hole (5194); The inner ring of the shaft hole (5194) is provided with an annular oil groove (5195); The two oil cylinders (5191) are connected to the oil seat (5193) through an oil pipe (5196), and the two oil cylinders (5191) are respectively connected to the shaft hole (5194) and the oil groove (5195); two oil passages (5197) are provided inside the transverse shaft (514), and the two oil passages (5197) are respectively connected to the shaft hole (5194) and the oil groove (5195); The surface of the transverse shaft (514) is provided with a connecting groove (5198) corresponding to the cam (518), and the cam (518) is rotatably sleeved in the connecting groove (5198), a pressing ring (5199) is slidably connected in the connecting groove (5198), and a plunger (51910) is fixedly arranged on the side surface of the pressing ring (5199); The oil passage (5197) penetrates along the side wall of the connecting groove (5198), and the plunger (51910) is slidably connected in the oil passage (5197); The box body (1), the door shaft (3) and the sliding sleeve (510) are provided with a safety component (51911).

3. A high voltage AC metal enclosed ring network switchgear according to claim 2, characterized in that: The safety component (51911) comprises a slide groove (519111) provided inside the box body (1), and the slide groove (519111) is connected with the wall groove (51), a latch (519112) is slidably connected inside the slide groove (519111), and a top spring (519113) is arranged inside the slide groove (519111), and the top spring (519113) pushes the latch (519112) to move in the direction of the sliding sleeve (510), and one end of the latch (519112) close to the inner groove (513) passes through the sliding sleeve (510) and presses against the spring pin (511); The door shaft (3) extends into the slide groove (519111), and a rubber protrusion (519114) is provided at the bottom end of the door shaft (3), and a slot (519115) matching with the rubber protrusion (519114) is provided on the surface of the latch (519112); A damper (519116) is disposed inside the slide groove (519111) to slow down the movement of the latch (519112) toward the slide sleeve (510).

4. The high voltage AC metal enclosed ring network switchgear according to claim 1, characterized in that: A slip ring is slidably connected to the handle (54), and the pull wire (512) is fixedly connected to the slip ring.

5. The high voltage AC metal enclosed ring network switchgear according to claim 1, characterized in that: A cover plate is fixedly mounted in the wall groove (51) by means of buckles.

6. The high voltage AC metal enclosed ring network switchgear according to claim 1, characterized in that: Anti-slip teeth are arranged on the contact side surface of the support foot (517).

7. The high voltage AC metal enclosed ring network switchgear according to claim 2, characterized in that: The pressure ring (5199) and the cam (518) are both provided with locking teeth on the opposite side of the surface.

8. A method for using a high-voltage AC metal-enclosed ring network switch device according to claim 1, comprising the following steps: S1. When the box (1) is moved to the installation position, the handle (54) is pulled up to drive the main bevel gear (56) to rotate, and the transmission bevel gear (58) is used to drive the secondary bevel gear (515) and the horizontal shaft (514) to rotate. During this process, the upper transmission bevel gear (58) is locked in one direction by the spring pin (511) using the latching teeth (59) and will not rotate. The cam (518) that rotates along the horizontal shaft (514) pushes the support leg (517) on one hand to slide outward along the through groove (516) and abut against other objects to fix the box (1), and pushes the other part to slide directly inward along the through groove (516) and clamp and fix the object on the inner side of the box foot (4); S2. Before using the handle (54) to pop out the support leg (517) for installation, rotate the bolts (5192) on the two oil cylinders (5191) to squeeze the internal hydraulic oil. The oil in the two oil pipes (5196) is respectively injected into the shaft hole (5194) and the oil groove (5195), and enters the two oil passages (5197). At this time, the oil pressure pushes the plunger (51910) to move and presses the pressure ring (5199) onto the cam (518), so that the cam (518) is connected to the horizontal shaft (514). The two oil cylinders (5191) correspond to the cams (518) of the inner sliding and outer sliding support legs (517) respectively. The oil cylinder (5191) that has not been screwed into the bolts (5192) will not push out the pressure ring (5199). At this time, the cam (518) is not driven by the horizontal shaft (514) and will not push out the support leg (517). S3, when the installed box (1) is installed and unlocked, the spring pin (511) is pulled upward by the pull wire (512), at which time the latching teeth (59) and the upper bevel gear are unlocked, the support foot (517) loses the driving force of the cam (518), and the support foot (517) is pushed into the through groove (516) to carry the box (1); S4. The top spring (519113) inside the box body (1) pushes the latch pin (519112) to press against the spring pin (511) to lock it. The operator cannot directly use the pull wire (512) to pull the spring pin (511) to unlock it. At this time, it is necessary to open the box door (2) and then close the box door (2). During this process, the rubber protrusion (519114) at the bottom of the door shaft (3) performs a reciprocating circular motion and squeezes into the card slot (519115) when the box door (2) is opened. As the box door (2) is closed, the latch pin (519112) compresses the top spring (519113) to move forward. At this time, the latch pin (519112) is separated from the spring pin (511), and the operator can operate the spring pin (511) to unlock the support leg (517).

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