Linkage type locking structure of ring main unit and ring main unit

Abstract

The invention discloses a ring main unit linkage type locking structure and a ring main unit, and relates to the technical field of power transmission and distribution switch equipment. The automatic locking device comprises a lock body, an automatic locking assembly and a handheld unlocking frame, the automatic locking assembly is fixed to the back face of a cabinet door of the switch cabinet, a mounting groove is formed in the cabinet door of the switch cabinet, the lock body is mounted in the mounting groove, the lock body is unlocked through the automatic locking assembly when powered on, and the lock body is unlocked through the handheld unlocking frame after powered off. Through the design of the automatic locking assembly, the lock body and the like, the automatic locking assembly controls the lock body to be unlocked and locked during power on, a special handheld unlocking frame needs to be used for unlocking and locking during power off, the situation that a worker opens a cabinet door by mistake when equipment is powered on or operation conditions are not met can be effectively avoided, and safety accidents such as electric shock are prevented; in addition, during on-off unlocking or power-off unlocking, a row of ring main units can be opened in a linkage mode at a time, a certain specific ring main unit can be opened independently, and use convenience is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission and distribution switch equipment, and in particular relates to a ring main unit linkage locking structure and a ring main unit. Background Art

[0002] Ring main unit is an electrical device that integrates high-voltage switchgear in a metal-enclosed box, or is made into a spliced ​​interval ring main unit. It is widely used in distribution stations and box-type substations in power supply centers such as cities and residential areas, high-rise buildings, large public buildings, factories and enterprises.

[0003] At present, the locking structure of the ring network cabinet is disclosed in the existing public documents, CN112152111A - a locking mechanism of a ring network cabinet and a ring network cabinet, which are publicly provided with a ring network cabinet body, a sliding door and a shutter. The front end face of the ring network cabinet body is installed with a sliding door, and the shutter is fixedly connected to the lower part of the front end face of the sliding door. The front end face of the ring network cabinet body is installed with a locking device, which solves the problem in the prior art that the locking mechanism of the ring network cabinet is not connected to the main circuit breaker and the operator cannot be given a safety reminder. However, the existing ring main unit may cause the staff to mistakenly open the cabinet door when the equipment is powered on or the operating conditions are not met, which may lead to safety accidents such as electric shock. In addition, the existing locking device may fail to open the cabinet door or the entire locking system may fail due to failure of key components such as motors. In addition, the unlocking drive method of the existing locking device is relatively single, which is difficult to adapt to the needs of different environments and operating conditions. When a row of ring main units needs to be opened after a power failure, each ring main unit needs to be opened separately in turn, which is time-consuming and labor-intensive, and cannot well meet the needs of opening a row of ring main units at one time or opening a specific ring main unit separately. To this end, we provide a ring main unit linkage locking structure and ring main unit to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a ring network cabinet linkage locking structure and a ring network cabinet. Through the design of automatic locking components and lock main bodies, etc., and the use of diversified driving modes for a handheld unlocking frame, the low safety performance of the locking structure of the existing ring network cabinet is solved. In addition, the driving mode of the existing locking device during the unlocking operation may be relatively single, which is difficult to meet the operating requirements under different environments and conditions. Moreover, when a row of ring network cabinets needs to be opened after a power outage, it cannot well meet the needs of opening a row of ring network cabinets in a one-time linkage manner or opening a specific ring network cabinet individually.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention discloses a ring network cabinet linkage locking structure and a ring network cabinet, comprising a lock body, an automatic locking assembly and a handheld unlocking frame, a mounting frame is fixed on the back of a switch cabinet door, a main knife switch is fixed inside the mounting frame, the automatic locking assembly is fixed on the back of the switch cabinet door, a mounting groove is provided on the switch cabinet door, a lock body is installed inside the mounting groove, the lock body comprises an operating rod and a lock plate, an outer end circular plate of the operating rod is fixed with an operating handle through a supporting rod, a linkage rod is movably connected to the inner end of the operating rod, and the linkage rod is connected to the main knife switch. The push handle is movably connected, and a lock plate is fixed on the back of the switch cabinet door just below the operating lever. When power is on, the lock body is unlocked by an automatic locking assembly, which includes a No. 1 locking assembly and a No. 2 locking assembly. The No. 1 locking assembly is installed above the lock body, and the No. 2 locking assembly is installed below the lock body. After power is off, the lock body is unlocked by a handheld unlocking frame, which includes a beam plate, a drive assembly and a gear seat. A group of evenly distributed drive assemblies are fixed on the beam plate, and each drive assembly is connected to a gear seat.

[0006] The present invention is further configured such that the operating rod comprises a T-shaped rod and an end rod, the inner end of the T-shaped rod is movably connected to the end rod through a bearing, a cross bar is fixed to the groove portion of the outer end of the end rod, connecting rings are fixed to both ends of the linkage rod, the connecting ring at one end of the linkage rod is sleeved on the cross bar at the outer end of the end rod, and the connecting ring at the other end of the linkage rod is sleeved on the push handle of the main knife switch; A No. 1 gear ring is fixed to the peripheral side of the T-shaped rod, and an elliptical connecting groove is provided on the end rod; A tooth groove is provided in the center of the operating handle, and oval slots are provided on both sides of the operating handle. Two symmetrically arranged through holes are provided on the outer ring plate of the operating handle, and a limit rod is movably connected inside each through hole. A slide plate is fixed on the back of the lock plate, and the slide plate is slidably connected in a set of mirror-image slide rails, and a set of slide rails is fixed on the back of the switch cabinet door; The lock plate is provided with a toothed groove, and the side of the switch cabinet is provided with a lock groove, the lock groove and the lock plate are arranged correspondingly, and the size of the lock groove matches the size of the outer end of the lock plate.

[0007] The present invention is further configured that the No. 1 locking assembly includes a No. 1 hydraulic rod and a connecting assembly, the No. 1 hydraulic rod is fixed to the back of the cabinet door of the switch cabinet through a mounting seat, and the output end of the No. 1 hydraulic rod is connected to the connecting assembly; The connection assembly includes a No. 1 motor, a No. 2 hydraulic rod and a connecting rod. The output end of the No. 1 motor is connected to the No. 2 hydraulic rod through a seat plate. The output end of the No. 2 hydraulic rod is connected to the connecting rod. The No. 1 motor is fixed on the connecting seat. The output end of the No. 1 motor crosses the connecting seat. The connecting seat is fixed on the back of the cabinet door of the switch cabinet. The bottom end of the connecting rod is an elliptical plate, and the size of the elliptical plate at the bottom end of the connecting rod matches the size of the elliptical connecting groove.

[0008] The present invention is further configured such that the No. 2 locking assembly includes a No. 3 hydraulic rod and a push plate, the No. 3 hydraulic rod is fixed to the back of the cabinet door of the switch cabinet through a mounting seat, the push plate is fixed to the bottom of the lock plate, and the output end of the No. 3 hydraulic rod is connected to the push plate.

[0009] The present invention is further configured such that a group of evenly distributed I-shaped grooves are provided on the beam plate, each I-shaped groove is movably connected to an I-shaped shaft seat, both sides of each I-shaped groove are provided with movable grooves, a touch screen is fixed to the outer side of the beam plate, two symmetrically arranged handles are fixed to the outer side of the beam plate, and a limited position assembly is movably connected to the beam plate; A tooth block is fixed on the outer side of the tooth seat, and the size of the tooth block matches the size of the tooth groove.

[0010] The present invention is further configured such that the limit assembly includes a locking rod and a connecting plate, a group of locking rods are connected as a whole through the connecting plate, a group of locking rods cross each movable groove in a one-to-one correspondence, the ends of the locking rods are fixed with elliptical end plates, the peripheral sides of the locking rods are fixed with ring blocks, the ring blocks are slidably installed inside the movable groove, and the size of the elliptical end plate matches the size of the elliptical slot.

[0011] The present invention is further configured such that the driving assembly includes a No. 2 motor and a battery box, the seat plate of the No. 2 motor is fixed to the inner side of the beam plate by screws, the output end seat plate of the No. 2 motor is connected to the gear seat by screws, and the plug of the battery box connecting wire is plugged into the interface at the bottom of the beam plate.

[0012] The present invention is further configured such that the drive assembly includes a chain drive member, the chain drive member includes a shaft member, a toothed chain and a handwheel, a group of shaft members are connected by a toothed chain transmission, and the handwheel is fixed to the outer side surface of the I-shaped shaft seat located in the middle portion by a screw; The shaft rod member includes an I-shaped shaft rod and a No. 2 gear ring. The No. 2 gear ring is fixed to the circumferential side of the middle rod portion of the I-shaped shaft rod. The end seat at one end of the I-shaped shaft rod is connected to the corresponding I-shaped shaft seat by screws, and the end seat at the other end of the I-shaped shaft rod is connected to the gear seat by screws.

[0013] The present invention also provides a ring main unit, comprising the above-mentioned linkage locking structure and a protective door.

[0014] The present invention is further configured such that a protective door is fixed to the outside of the installation groove, and limiting holes are provided above and below the transverse groove portion of the installation groove, the size of the limiting holes matches the size of the inner end of the limiting rod, the protective door comprises a door frame and a door panel, and the door panel is slidably connected to the outside of the door frame; Magnetic plates are fixed to the upper and lower parts of both side surfaces of the door frame, and metal magnetic attracting sheets are fixed to the lower parts of both side surfaces of the door panel.

[0015] The above-mentioned settings, the setting of the protective door and the coordination of the magnetic plate and the metal magnetic sheet on the door frame and door panel can keep the protective door tightly closed when not in operation, preventing unauthorized personnel from randomly contacting the lock body and other components, playing an additional protective role and enhancing the protective capability.

[0016] The present invention has the following beneficial effects: 1. The present invention adopts the design of automatic locking components and lock bodies. When power is on, the automatic locking components control the lock body to unlock and lock. When power is off, a special handheld unlocking frame is required to unlock and lock. This can effectively prevent staff from accidentally opening the cabinet door when the equipment is powered on or the operating conditions are not met, prevent safety accidents such as electric shock, and prevent staff from operating incorrectly. Moreover, various components and parts are relatively independent and cooperate with each other. For example, the design of the slide plate and the slide rail on the back of the lock plate facilitates the movement and maintenance of the lock plate; and the setting of the protective door is also convenient for opening for inspection and maintenance when necessary, which reduces the difficulty of maintenance and improves the maintenance efficiency. In addition, when unlocking by turning on and off or unlocking by power off, a row of ring network cabinets can be opened in linkage at one time, and a specific ring network cabinet can be opened separately, which improves the convenience of use.

[0017] 2. The No. 1 locking component and the No. 2 locking component in the automatic locking component of the present invention control the lock body from the top and the bottom respectively. The combined design of the hydraulic rod and the motor can ensure the stable locking and unlocking functions under the power-on state, ensure the reliability of the ring network cabinet in normal operation, stabilize the locking function, and have corresponding unlocking methods under different working conditions such as normal power-on operation and accidental power failure, so that the locking structure of the ring network cabinet can adapt to a variety of situations, reduce the possibility of failure of the entire locking system due to a single fault point, adapt to different working conditions, and improve reliability.

[0018] 3. The driving components of the handheld unlocking frame of the present invention include various forms such as a No. 2 motor, a battery box, and a chain drive, and adopt a diversified driving mode. Electric drive or manual drive can be selected according to actual needs and scenarios, which is convenient for staff to perform unlocking operations in different environments and conditions.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1This is a schematic diagram of the structure of the state change of each protective door in a row of ring network cabinets from closed to open.

[0022] Figure 2 for Figure 1 Schematic diagram of the structure after the middle protective door is opened.

[0023] Figure 3 Structural diagram for unlocking by handheld unlocking stand Figure 1 .

[0024] Figure 4 Structural diagram for unlocking by handheld unlocking stand Figure 2 .

[0025] Figure 5 It is a structural schematic diagram of the state change from the power-on unlocked state to the power-on locked state.

[0026] Figure 6 This is a schematic diagram of the state change structure of the main knife switch from open to closed.

[0027] Figure 7 This is a schematic diagram of the structure of the No. 1 locking assembly.

[0028] Figure 8 It is a schematic diagram of the overall structure of the lock plate and the second locking assembly.

[0029] Fig. 9 for Figure 3 Schematic diagram of the structure of the handheld unlocking frame.

[0030] Fig.10 for Fig. 9 Schematic diagram of the structure of the No. 2 motor and gear seat.

[0031] Fig.11 for Figure 4 Schematic diagram of the structure of the handheld unlocking frame.

[0032] Fig.12 for Fig.11 Schematic diagram of the structure of the middle shaft rod and gear seat.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 100, switch cabinet; 101, installation slot; 102, limit hole; 110, protective door; 111, door frame; 112, door panel; 1111, magnetic plate; 1121, metal magnet sheet; 120, installation frame; 130, main knife switch; 200, lock body; 210, operating rod; 211, T-shaped rod; 212, end rod; 213, No. 1 tooth ring; 214, elliptical connecting groove; 220, operating handle; 221, tooth groove; 222, elliptical slot; 223, limit rod; 230, linkage rod; 240, lock plate; 241, slide plate; 242, slide rail; 300, automatic locking assembly; 310, No. 1 locking assembly; 311, No. 1 hydraulic rod; 312, connecting assembly; 3121, No. 1 motor; 3122, No. 2 hydraulic rod; 3123, connecting rod; 3124, connecting seat; 320, No. 2 locking assembly; 321, No. 3 hydraulic rod; 322, push plate; 400, handheld unlocking frame; 410, beam plate; 411, I-shaped shaft seat; 412, movable groove; 413, touch screen; 414, handle; 420, limit assembly; 421, locking rod; 4211, elliptical end plate; 4212, ring block; 422, connecting plate; 430, No. 2 motor; 440, chain drive member; 441, shaft rod member; 4411, I-shaped shaft rod; 4412, No. 2 gear ring; 442, gear chain; 450, gear seat; 451, gear block; 460, battery box; 470, handwheel. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0035] See also Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The present invention is a ring main unit linkage locking structure, comprising a lock body 200, an automatic locking assembly 300 and a handheld unlocking frame 400, wherein the automatic locking assembly 300 is fixed to the back of a cabinet door of a switch cabinet 100, and a mounting groove 101 is provided on the cabinet door of the switch cabinet 100, wherein the lock body 200 is installed inside the mounting groove 101, and the lock body 200 is unlocked by the automatic locking assembly 300 when power is on; A mounting frame 120 is fixed on the back of the cabinet door of the switch cabinet 100, and a main knife switch 130 is fixed inside the mounting frame 120; The lock body 200 includes an operating rod 210 and a lock plate 240. The outer end circular plate of the operating rod 210 is fixed with an operating handle 220 through a supporting rod. The inner end of the operating rod 210 is movably connected with a linkage rod 230. The linkage rod 230 is movably connected with the push handle of the main knife switch 130. A lock plate 240 is fixed to the back of the cabinet door of the switch cabinet 100 directly below the operating rod 210. A tooth-shaped groove is provided on the lock plate 240. A lock groove is provided on the side of the cabinet body of the switch cabinet 100. The lock groove is arranged corresponding to the lock plate 240, and the size of the lock groove matches the size of the outer end of the lock plate 240. The automatic locking assembly 300 includes a first locking assembly 310 and a second locking assembly 320 . The first locking assembly 310 is installed at an upper position of the lock body 200 , and the second locking assembly 320 is installed at a lower position of the lock body 200 .

[0036] Specifically, the operating rod 210 includes a T-shaped rod 211 and an end rod 212. The inner end of the T-shaped rod 211 is movably connected to the end rod 212 through a bearing. A cross bar is fixed to the groove at the outer end of the end rod 212. Both ends of the linkage rod 230 are fixed with connecting rings. The connecting ring at one end of the linkage rod 230 is sleeved on the cross bar at the outer end of the end rod 212, and the connecting ring at the other end of the linkage rod 230 is sleeved on the push handle of the main knife switch 130. A first gear ring 213 is fixed to the peripheral side of the T-shaped rod 211, and an elliptical connecting groove 214 is provided on the end rod 212; A tooth groove 221 is provided at the center of the operating handle 220, and oval slots 222 are provided on both sides of the operating handle 220. Two symmetrically arranged through holes are provided on the outer ring plate of the operating handle 220, and a limit rod 223 is movably connected inside each through hole. A slide plate 241 is fixed to the back of the lock plate 240 , and the slide plate 241 is slidably connected in a set of mirror-image slide rails 242 , and a set of slide rails 242 is fixed to the back of the cabinet door of the switch cabinet 100 .

[0037] Furthermore, the No. 1 locking assembly 310 includes a No. 1 hydraulic rod 311 and a connecting assembly 312. The No. 1 hydraulic rod 311 is fixed to the back of the cabinet door of the switch cabinet 100 through a mounting seat, and the output end of the No. 1 hydraulic rod 311 is connected to the connecting assembly 312. The connecting assembly 312 includes a No. 1 motor 3121, a No. 2 hydraulic rod 3122 and a connecting rod 3123. The output end of the No. 1 motor 3121 is connected to the No. 2 hydraulic rod 3122 through a seat plate, and the output end of the No. 2 hydraulic rod 3122 is connected to the connecting rod 3123. The No. 1 motor 3121 is fixed on a connecting seat 3124. The output end of the No. 1 motor 3121 crosses the connecting seat 3124. The connecting seat 3124 is fixed to the back of the cabinet door of the switch cabinet 100. The bottom end of the connecting rod 3123 is an elliptical plate, and the size of the elliptical plate at the bottom end of the connecting rod 3123 matches the size of the elliptical connecting groove 214; The No. 2 locking assembly 320 includes a No. 3 hydraulic rod 321 and a push plate 322 . The No. 3 hydraulic rod 321 is fixed to the back of the cabinet door of the switch cabinet 100 through a mounting seat. The push plate 322 is fixed to the bottom of the lock plate 240 . The output end of the No. 3 hydraulic rod 321 is connected to the push plate 322 .

[0038] The operation process of this embodiment is as follows: Power-on unlocking process: When power is turned on, the automatic locking assembly 300 starts unlocking, and the specific operations are as follows: First, pull out the corresponding limiting rod 223 from the limiting hole 102 to complete the unlocking operation of the operating handle 220, and then drive the connecting assembly 312 to move to the top of the operating rod 210 through the action of the No. 1 hydraulic rod 311 in the No. 1 locking assembly 310, and then start the No. 2 hydraulic rod 3122 in the connecting assembly 312, and push the connecting rod 3123 to move downward through the action of the No. 2 hydraulic rod 3122 until the elliptical plate at the bottom of the connecting rod 3123 crosses the elliptical connecting groove 214 of the end rod 212, and then drive the No. 2 hydraulic rod 3122 and the connecting rod 3123 to rotate forward as a whole through the action of the No. 1 motor 3121, so that the elliptical plate at the bottom of the connecting rod 3123 is pushed downward. The shaped plate is perpendicular to the elliptical connecting groove 214, completing the limit between the connecting rod 3123 and the operating rod 210, and then through the cooperation of the No. 1 hydraulic rod 311 and the No. 2 hydraulic rod 3122, the operating rod 210 and the operating handle 220 are driven to move as a whole from the horizontal outermost end position of the installation groove 101 to the vertical outermost end position of the installation groove 101. At this time, the No. 1 toothed ring 213 of the operating rod 210 just bites with the toothed groove of the locking plate 240. In the process of moving the operating rod 210 and the operating handle 220 downward as a whole, the linkage rod 230 at the inner end of the operating rod 210 will drive the push handle of the main knife switch 130 to close the main knife switch 130, so as to realize the internal power outage of the switch cabinet 100; In the process of closing the main knife switch 130, the third hydraulic rod 321 of the second locking assembly 320 acts to cause the slide plate 241 of the lock plate 240 to move inward in the slide rail 242 until the outer end of the lock plate 240 is completely moved into the back of the door of the switch cabinet 100, completing the automatic unlocking operation; In addition, after the operating rod 210 and the operating handle 220 are moved as a whole to the vertical outermost position of the installation groove 101, the No. 2 hydraulic rod 3122 and the connecting rod 3123 are driven to rotate in the opposite direction as a whole through the action of the No. 1 motor 3121, so that the elliptical plate at the bottom end of the connecting rod 3123 is parallel to the elliptical connecting groove 214, completing the unlocking between the connecting rod 3123 and the operating rod 210, and then through the cooperation of the No. 1 hydraulic rod 311 and the No. 2 hydraulic rod 3122, the No. 1 locking assembly 310 returns to its original position.

[0039] Power-on locking process: When power is turned on, the automatic locking assembly 300 starts locking work, and the specific operation is as follows: First, the No. 1 hydraulic rod 311 in the No. 1 locking assembly 310 drives the connecting assembly 312 to move to the top of the operating rod 210, and then the No. 2 hydraulic rod 3122 in the connecting assembly 312 is started. The No. 2 hydraulic rod 3122 pushes the connecting rod 3123 downward until the elliptical plate at the bottom of the connecting rod 3123 crosses the elliptical connecting groove 214 of the end rod 212, and then the No. 1 motor 3121 drives the No. 2 hydraulic rod 3122 and the connecting rod 3123 to rotate forward as a whole, causing the connecting rod 312 The elliptical plate at the bottom is perpendicular to the elliptical connecting groove 214, completing the limit between the connecting rod 3123 and the operating rod 210, and then through the cooperation of the No. 1 hydraulic rod 311 and the No. 2 hydraulic rod 3122, the operating rod 210 and the operating handle 220 are driven to move from the vertical outermost end position of the installation groove 101 to the horizontal outermost end position of the installation groove 101. At this time, the No. 1 gear ring 213 of the operating rod 210 is away from the locking plate 240, and then the corresponding limit rod 223 is inserted into each limit hole 102 to complete the locking operation of the operating handle 220; When the operating rod 210 and the operating handle 220 are moved upward as a whole, the linkage rod 230 at the inner end of the operating rod 210 drives the push handle of the main knife switch 130 to open the main knife switch 130, thereby energizing the inside of the switch cabinet 100; While the main knife switch 130 is turned on, the slide plate 241 of the lock plate 240 moves outward in the slide rail 242 through the action of the No. 3 hydraulic rod 321 of the No. 2 locking assembly 320, until the outer end of the lock plate 240 is completely inserted into the lock groove on the side of the switch cabinet 100, completing the automatic locking operation; In addition, after the operating rod 210 and the operating handle 220 are moved to the horizontal outermost end of the installation groove 101, the No. 1 motor 3121 drives the No. 2 hydraulic rod 3122 and the connecting rod 3123 to rotate in the opposite direction, so that the elliptical plate at the bottom of the connecting rod 3123 is parallel to the elliptical connecting groove 214, and the connecting rod 3123 and the operating rod 210 are unlocked. Then, the No. 1 locking assembly 310 returns to its original position through the cooperation of the No. 1 hydraulic rod 311 and the No. 2 hydraulic rod 3122. It should be added that a row of switch cabinets 100 can be powered on and unlocked or powered on and locked simultaneously. Example 2

[0040] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 On the basis of Example 1, the lock body 200 is unlocked by a handheld unlocking frame 400 after power failure. The handheld unlocking frame 400 includes a beam plate 410, a driving assembly and a tooth seat 450. A group of evenly distributed I-shaped grooves are opened on the beam plate 410, and an I-shaped shaft seat 411 is movably connected inside each I-shaped groove. Active grooves 412 are opened on both sides of each I-shaped groove. A touch screen 413 is fixed to the outer side of the beam plate 410, and two symmetrically arranged handles 414 are fixed to the outer side of the beam plate 410. A limit assembly 420 is movably connected to the beam plate 410, and a group of evenly distributed driving assemblies are fixed on the beam plate 410, and each driving assembly is connected to a tooth seat 450. A tooth block 451 is fixed to the outer side of the tooth seat 450, and the size of the tooth block 451 matches the size of the tooth groove 221.

[0041] Specifically, the limit assembly 420 includes a locking rod 421 and a connecting plate 422. A group of locking rods 421 are connected as a whole through the connecting plate 422. A group of locking rods 421 cross each movable groove 412 one by one. The ends of the locking rods 421 are fixed with elliptical end plates 4211. The surrounding sides of the locking rods 421 are fixed with ring blocks 4212. The ring blocks 4212 are slidably installed inside the movable groove 412. The size of the elliptical end plates 4211 matches the size of the elliptical slot 222.

[0042] Furthermore, the driving assembly includes a No. 2 motor 430 and a battery box 460. The seat plate of the No. 2 motor 430 is fixed to the inner side of the beam 410 by screws, the output end seat plate of the No. 2 motor 430 is connected to the gear seat 450 by screws, and the plug of the connecting wire of the battery box 460 is plugged into the interface at the bottom of the beam 410.

[0043] The operation process of this embodiment is as follows: Power-off unlocking process: When the power is off, the automatic locking assembly 300 loses power and needs to be assisted by the handheld unlocking frame 400. The specific unlocking operation is as follows: Connection and positioning: first, pull out each limiting rod 223 from the corresponding limiting hole 102 to complete the unlocking operation of each operating handle 220, and then align each tooth block 451 of the handheld unlocking frame 400 with the tooth groove 221 of each operating handle 220 and insert it, so that the elliptical end plate 4211 at the end of each locking rod 421 is inserted into the elliptical slot 222 on both sides of each operating handle 220, and then manually move the connecting plate 422 of the limiting assembly 420, so that each elliptical end plate 4211 moves and dislocates in its respective elliptical slot 222, so that each elliptical end plate 4211 is limited in the corresponding elliptical slot 222, and the preliminary positioning of the handheld unlocking frame 400 and each operating handle 220 in a row of switch cabinets 100 is completed; Manual shift: Hold the handheld unlocking frame 400 and move all the operating rods 210 and operating handles 220 of a row of switch cabinets 100 from the horizontal outermost end position of the mounting groove 101 to the vertical outermost end position of the mounting groove 101 at the same time. At this time, the No. 1 toothed ring 213 of each operating rod 210 just engages with the toothed groove of the lock plate 240 on the row of switch cabinets 100 at the same time. In the process of moving all the operating rods 210 and operating handles 220 downward as a whole, the linkage rods 230 at the inner ends of each operating rod 210 will drive the push handles of each main knife switch 130, and at the same time close the main knife switches 130 of the row of switch cabinets 100, so as to realize the simultaneous power off inside the row of switch cabinets 100; Automatic unlocking: The driving component, i.e., the No. 2 motor 430, is started through the touch screen 413. The No. 2 motor 430 drives the gear holder 450 to rotate. The tooth block 451 on the gear holder 450 engages with the tooth groove 221 of the operating handle 220, thereby driving the operating handle 220 to rotate, driving the No. 1 gear ring 213 to rotate, and then driving the slide plate 241 of the lock plate 240 to move inward in the slide rail 242 until the outer end of the lock plate 240 is completely moved into the back of the cabinet door of the switch cabinet 100, completing the semi-automatic unlocking operation; Separate the handheld unlocking frame 400: After the operation is completed, turn off the No. 2 motor 430, move the limit assembly 420 in the opposite direction, move each elliptical end plate 4211 again to overlap with each elliptical slot 222, and then pull out the separated handheld unlocking frame 400 to separate the handheld unlocking frame 400 from the lock body 200.

[0044] Power-off locking process: When the power is off, the automatic locking assembly 300 loses power and needs to be assisted by the handheld unlocking frame 400. The specific locking operation is as follows: Connection and positioning: the handheld unlocking frame 400 and each operating handle 220 in a row of switch cabinets 100 are initially positioned according to the same operation as above; Automatic locking: The driving component, i.e., the No. 2 motor 430, is started through the touch screen 413. The No. 2 motor 430 drives the gear holder 450 to rotate in the opposite direction. The tooth block 451 on the gear holder 450 engages with the tooth groove 221 of the operating handle 220, thereby driving the operating handle 220 to rotate in the opposite direction, driving the No. 1 gear ring 213 to rotate in the opposite direction, and then driving the slide plate 241 of the lock plate 240 to move outward in the slide rail 242 until the outer end of the lock plate 240 is completely inserted into the lock groove on the side of the switch cabinet 100, thereby completing the automatic locking operation; Manual shifting: holding the handheld unlocking frame 400, the operating rods 210 and the operating handles 220 of a row of switch cabinets 100 are moved as a whole from the vertical outermost end position of the mounting groove 101 to the horizontal outermost end position of the mounting groove 101 at the same time, at this time, the No. 1 toothed ring 213 of each operating rod 210 is away from the corresponding locking plate 240, and then each limiting rod 223 is inserted into the corresponding limiting hole 102 to complete the locking operation of each operating handle 220; in the process of moving each operating rod 210 and the operating handle 220 downward as a whole, the linkage rod 230 at the inner end of each operating rod 210 will drive the push handle of each main knife switch 130, and at the same time open the main knife switch 130 of a row of switch cabinets 100, so that the inside of a row of switch cabinets 100 is powered on at the same time; Separate the handheld unlocking frame 400: After the operation is completed, turn off the No. 2 motor 430, move the limit assembly 420 in the opposite direction, move each elliptical end plate 4211 again to overlap with each elliptical slot 222, and then pull out the separated handheld unlocking frame 400 to separate the handheld unlocking frame 400 from the lock body 200. Example 3

[0045] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.11 and Fig.12On the basis of Embodiment 1 and Embodiment 2, the lock body 200 is unlocked by a handheld unlocking frame 400 after power failure. The handheld unlocking frame 400 includes a beam plate 410, a driving assembly and a tooth seat 450. A group of evenly distributed I-shaped grooves are opened on the beam plate 410, and an I-shaped shaft seat 411 is movably connected inside each I-shaped groove. Active grooves 412 are opened on both sides of each I-shaped groove. A touch screen 413 is fixed to the outer side of the beam plate 410. Two symmetrically arranged handles 414 are fixed to the outer side of the beam plate 410. A limit assembly 420 is movably connected to the beam plate 410. A group of evenly distributed driving assemblies are fixed on the beam plate 410, and each driving assembly is connected to a tooth seat 450. A tooth block 451 is fixed to the outer side of the tooth seat 450, and the size of the tooth block 451 matches the size of the tooth groove 221.

[0046] Specifically, the limit assembly 420 includes a locking rod 421 and a connecting plate 422. A group of locking rods 421 are connected as a whole through the connecting plate 422. A group of locking rods 421 cross each movable groove 412 one by one. The ends of the locking rods 421 are fixed with elliptical end plates 4211. The surrounding sides of the locking rods 421 are fixed with ring blocks 4212. The ring blocks 4212 are slidably installed inside the movable groove 412. The size of the elliptical end plates 4211 matches the size of the elliptical slot 222.

[0047] Furthermore, the driving assembly includes a chain driving member 440, which includes a shaft member 441, a toothed chain 442 and a handwheel 470. A group of shaft members 441 are connected by transmission through the toothed chain 442, and the handwheel 470 is fixed to the outer side of the I-shaped shaft seat 411 located in the middle part by screws; the shaft member 441 includes an I-shaped shaft 4411 and a second toothed ring 4412, and the second toothed ring 4412 is fixed on the circumferential side of the middle rod portion of the I-shaped shaft 4411. The end seat at one end of the I-shaped shaft 4411 is connected to the corresponding I-shaped shaft seat 411 by screws, and the end seat at the other end of the I-shaped shaft 4411 is connected to the toothed seat 450 by screws.

[0048] The operation process of this embodiment is as follows: Power-off unlocking process: When the power is off, the automatic locking assembly 300 loses power and needs to be assisted by the handheld unlocking frame 400. The specific unlocking operation is as follows: Connection and positioning: First, the handheld unlocking frame 400 and each operating handle 220 in a row of switch cabinets 100 are initially positioned according to the same operation as in Example 2; Manual shifting: follow the same operation as in Example 2 to complete the shifting operation of the operating rods 210 and the operating handles 220 in the installation slots 101, and during the shifting process, the power supply of a row of switch cabinets 100 is cut off at the same time; Manual unlocking: Turn the hand wheel 470, and through the transmission of the tooth chain 442, drive each tooth seat 450 to rotate, and the tooth block 451 on the tooth seat 450 engages with the tooth groove 221 of the operating handle 220, thereby driving the operating handle 220 to rotate, driving the No. 1 gear ring 213 to rotate, and then driving the slide plate 241 of the lock plate 240 to move inward in the slide rail 242 until the outer end of the lock plate 240 is completely moved into the back of the door of the switch cabinet 100, completing the semi-automatic unlocking operation; Separating the handheld unlocking frame 400 : Then, the handheld unlocking frame 400 is separated from the lock body 200 according to the same operation as in Example 2.

[0049] Power-off locking process: When the power is off, the automatic locking assembly 300 loses power and needs to be assisted by the handheld unlocking frame 400. The specific locking operation is as follows: Connection and positioning: the handheld unlocking frame 400 and each operating handle 220 in a row of switch cabinets 100 are initially positioned according to the same operation as above; Manual locking: The hand wheel 470 is rotated in the opposite direction, and the toothed chain 442 drives each tooth seat 450 to rotate in the opposite direction, and the tooth block 451 on the tooth seat 450 engages with the tooth groove 221 of the operating handle 220, thereby driving the operating handle 220 to rotate in the opposite direction, driving the No. 1 gear ring 213 to rotate in the opposite direction, and then driving the slide plate 241 of the lock plate 240 to move outward in the slide rail 242 until the outer end of the lock plate 240 is completely inserted into the lock groove on the side of the switch cabinet 100, completing the automatic locking operation; Manual shifting: follow the same operation as above to complete the shifting operation of each operating rod 210 and the operating handle 220 in each installation slot 101, and during the shifting process, the inside of a row of switch cabinets 100 is powered on at the same time; Separate the handheld unlocking frame 400: Then follow the same operation as above to separate the handheld unlocking frame 400 from the lock body 200; In addition, when a single switch cabinet 100 needs to be opened, one only needs to hold the operating handle 220 of the switch cabinet 100, then move the position of the operating rod 210 and the operating handle 220 as a whole in the installation groove 101, and then manually rotate the operating rod 210 to drive the lock plate 240 to move to complete unlocking or locking. Example 4

[0050] See also Figure 1 and Figure 2 On the basis of Example 1, Example 2 and Example 3, the present invention further provides a ring main unit, including the above-mentioned linkage locking structure, and also including a protective door 110.

[0051] Specifically, a protective door 110 is fixed to the outside of the installation groove 101, and limiting holes 102 are provided above and below the transverse groove portion of the installation groove 101. The size of the limiting hole 102 matches the inner end size of the limiting rod 223. The protective door 110 includes a door frame 111 and a door panel 112. The door panel 112 is slidably connected to the outside of the door frame 111. Furthermore, magnetic plates 1111 are fixed to the upper and lower parts of both side surfaces of the door frame 111 , and metal magnetic attracting sheets 1121 are fixed to the lower parts of both side surfaces of the door panel 112 .

[0052] The operation process of this embodiment is as follows: by applying a certain external force to overcome the magnetic force, the door panel 112 slides on the door frame 111, the protective door 110 is opened, and the lock body 200 in the installation groove 101 is exposed, and the lock body 200 can be operated.

[0053] When operating the lock body 200, the lock body 200 can be unlocked and the main knife switch 130 can be subsequently operated according to the corresponding operation methods in Embodiment 1, Embodiment 2 and Embodiment 3; During operation, if the operating handle 220 needs to be limited, the inner end of the limiting rod 223 can be inserted into the limiting hole 102 above or below the transverse groove portion of the installation groove 101.

[0054] After the operation is completed, the door panel 112 of the protective door 110 is slid to the closed position, and the suction force of the magnetic plate 1111 and the metal magnetic sheet 1121 is used to keep the protective door 110 in a closed state. The protective door 110 can be closed to protect the internal lock body 200 and other components.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A ring main unit linkage locking structure, comprising a lock body (200), an automatic locking assembly (300) and a handheld unlocking frame (400); characterized in that: The automatic locking assembly (300) is fixed to the back of a cabinet door of a switch cabinet (100); a mounting groove (101) is provided on the cabinet door of the switch cabinet (100); a lock body (200) is installed inside the mounting groove (101); when power is on, the lock body (200) is unlocked by the automatic locking assembly (300); when power is off, the lock body (200) is unlocked by a handheld unlocking frame (400); Wherein, a mounting frame (120) is fixed on the back of a cabinet door of the switch cabinet (100), and a main knife switch (130) is fixed inside the mounting frame (120); The lock body (200) comprises an operating rod (210) and a lock plate (240); an outer end circular plate of the operating rod (210) is fixed with an operating handle (220) via a support rod; an inner end of the operating rod (210) is movably connected with a linkage rod (230); the linkage rod (230) is movably connected with a push handle of a main knife switch (130); and a lock plate (240) is fixed to the back of a cabinet door of the switch cabinet (100) directly below the operating rod (210); The automatic locking assembly (300) comprises a first locking assembly (310) and a second locking assembly (320), wherein the first locking assembly (310) is installed at an upper position of the lock body (200), and the second locking assembly (320) is installed at a lower position of the lock body (200); The handheld unlocking frame (400) comprises a beam plate (410), a driving assembly and a gear seat (450); a group of evenly distributed driving assemblies are fixed on the beam plate (410); and each driving assembly is connected to a gear seat (450).

2. A ring main unit linkage locking structure according to claim 1, characterized in that: The operating rod (210) comprises a T-shaped rod (211) and an end rod (212); the inner end of the T-shaped rod (211) is movably connected to the end rod (212) via a bearing; a cross bar is fixed to a groove at the outer end of the end rod (212); connecting rings are fixed to both ends of the linkage rod (230); the connecting ring at one end of the linkage rod (230) is sleeved on the cross bar at the outer end of the end rod (212); and the connecting ring at the other end of the linkage rod (230) is sleeved on a push handle of the main knife switch (130); A first gear ring (213) is fixed to the circumference of the T-shaped rod (211), and a vertically extending elliptical connecting groove (214) is provided on the end rod (212); A tooth groove (221) is provided at the center of the operating handle (220), oval slots (222) are provided on both sides of the operating handle (220), and two symmetrically arranged through holes are provided on the outer ring plate of the operating handle (220), and a limit rod (223) is movably connected inside each through hole; A slide plate (241) is fixed to the back of the lock plate (240), and the slide plate (241) is slidably connected to a set of mirror-image slide rails (242), and a set of the slide rails (242) is fixed to the back of a cabinet door of the switch cabinet (100); The lock plate (240) is provided with a tooth-shaped groove, and a side surface of the switch cabinet (100) is provided with a lock groove, the lock groove and the lock plate (240) are arranged correspondingly, and the size of the lock groove matches the size of the outer end of the lock plate (240).

3. A ring main unit linkage locking structure according to claim 2, characterized in that: The No. 1 locking assembly (310) comprises a No. 1 hydraulic rod (311) and a connecting assembly (312); the No. 1 hydraulic rod (311) is fixed to the back of a cabinet door of the switch cabinet (100) via a mounting seat; and the output end of the No. 1 hydraulic rod (311) is connected to the connecting assembly (312); The connection assembly (312) comprises a No. 1 motor (3121), a No. 2 hydraulic rod (3122) and a connecting rod (3123); the output end of the No. 1 motor (3121) is connected to the No. 2 hydraulic rod (3122) via a seat plate; the output end of the No. 2 hydraulic rod (3122) is connected to the connecting rod (3123); the No. 1 motor (3121) is fixed on a connecting seat (3124); the output end of the No. 1 motor (3121) crosses the connecting seat (3124); and the connecting seat (3124) is fixed to the back of a cabinet door of the switch cabinet (100); The bottom end of the connecting rod (3123) is an elliptical plate, and the size of the elliptical plate at the bottom end of the connecting rod (3123) matches the size of the elliptical connecting groove (214).

4. A ring main unit linkage locking structure according to claim 3, characterized in that: The No. 2 locking assembly (320) comprises a No. 3 hydraulic rod (321) and a push plate (322); the No. 3 hydraulic rod (321) is fixed to the back of a cabinet door of the switch cabinet (100) via a mounting seat; the push plate (322) is fixed to the bottom of the lock plate (240); and the output end of the No. 3 hydraulic rod (321) is connected to the push plate (322).

5. The ring main unit linkage locking structure according to claim 4, characterized in that: The beam plate (410) is provided with a group of evenly distributed I-shaped grooves, each I-shaped groove is movably connected to an I-shaped shaft seat (411), and each I-shaped groove is provided with movable grooves (412) on both sides. A touch screen (413) is fixed to the outer side surface of the beam plate (410), and two symmetrically arranged handles (414) are fixed to the outer side surface of the beam plate (410). A limit position assembly (420) is movably connected to the beam plate (410); A tooth block (451) is fixed to the outer side surface of the tooth seat (450), and the size of the tooth block (451) matches the size of the tooth groove (221).

6. A ring main unit linkage locking structure according to claim 5, characterized in that: The limiting assembly (420) comprises a locking rod (421) and a connecting plate (422), wherein a group of the locking rods (421) are connected as a whole via the connecting plate (422), and a group of the locking rods (421) cross each movable groove (412) in a one-to-one correspondence, and an elliptical end plate (4211) is fixed to the end of each locking rod (421), and a ring block (4212) is fixed to the peripheral side of the locking rod (421), and the ring block (4212) is slidably mounted inside the movable groove (412), and the size of the elliptical end plate (4211) matches the size of the elliptical slot (222).

7. A ring main unit linkage locking structure according to claim 6, characterized in that: The driving assembly comprises a No. 2 motor (430) and a battery box (460); the seat plate of the No. 2 motor (430) is fixed to the inner side of the beam plate (410) by means of screws; the output end seat plate of the No. 2 motor (430) is connected to the gear seat (450) by means of screws; and the plug of the connecting wire of the battery box (460) is plugged into the interface at the bottom of the beam plate (410).

8. The ring main unit linkage locking structure according to claim 6, characterized in that: The driving assembly comprises a chain driving member (440), wherein the chain driving member (440) comprises a shaft member (441), a toothed chain (442) and a hand wheel (470), wherein a group of the shaft members (441) are connected by transmission via the toothed chain (442), and the hand wheel (470) is fixed to the outer side surface of the I-shaped shaft seat (411) located in the middle portion by means of screws; The shaft rod member (441) comprises an I-shaped shaft rod (4411) and a second gear ring (4412); the second gear ring (4412) is fixed to the circumferential side of the middle rod portion of the I-shaped shaft rod (4411); an end seat at one end of the I-shaped shaft rod (4411) is connected to a corresponding I-shaped shaft seat (411) via a screw; and an end seat at the other end of the I-shaped shaft rod (4411) is connected to a gear seat (450) via a screw.

9. A ring main unit, comprising a ring main unit linkage locking structure as claimed in any one of claims 1 to 6, characterized in that: Also included is a protective door (110).

10. The ring main unit according to claim 9, characterized in that: A protective door (110) is fixed to the outside of the installation groove (101); limiting holes (102) are provided above and below the transverse groove portion of the installation groove (101); the size of the limiting hole (102) matches the size of the inner end of the limiting rod (223); the protective door (110) comprises a door frame (111) and a door panel (112); the door panel (112) is slidably connected to the outside of the door frame (111); Magnetic plates (1111) are fixed to the upper and lower parts of both side surfaces of the door frame (111), and metal magnetic attracting sheets (1121) are fixed to the lower parts of both side surfaces of the door panel (112).

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