A bus duct plug-in and plug-out device

Abstract

The present invention discloses a busbar duct plug-in and plug-out device, comprising a limit clamping assembly, the limit clamping assembly being arranged on both sides of the plug-in box body and being used to position the plug-in box body and connect it to the busbar duct; a manual drive assembly, the manual drive assembly being installed on the plug-in box body and driving multiple limit clamping assemblies to simultaneously clamp or release the busbar duct; a first limit switch and a second limit switch, the first limit switch and the second limit switch being respectively installed on both sides of one of the limit clamping assemblies, and when the limit clamping assemblies are clamped or released, the first limit switch or the second limit switch is struck; and a lifting outer frame being arranged at the lower end of the inner part of the plug-in box body, with screw adjustment members being installed at both ends of the lifting outer frame for driving the lifting outer frame to rise and fall. The present invention realizes the simultaneous plugging and fixing of the elastic plug pins and the plug socket in a vertically corresponding manner, and minimizes the problems of wear caused by tilting during the plug-in process and deformation of the elastic plug pins.

Description

Technical Field

[0001] The present invention relates to the technical field of bus duct plug-in boxes, in particular to a plug-in and plug-out device for a bus duct plug-in box. Background Art

[0002] A busbar duct plug-in box is an electrical device used to tap power from busbars. Typically made of metal or high-strength plastic, the box connects to the busbar duct's slots via connectors, drawing power from the busbar into the box. Then, controlled and distributed by electrical components like circuit breakers within the box, the power is output to the devices using it. This allows for convenient tapping of power from the main busbar trunk to power various devices. Due to their convenient tapping, safety, reliability, and flexible installation, busbar duct plug-in boxes are widely used in large buildings, industrial plants, shopping malls, high-rise buildings, and other locations.

[0003] At present, the connection between the bus duct plug-in box and the bus duct generally adopts a plug-in connection, that is, the bus duct plug-in box is first moved to the top of the bus duct, and the plug-in pins of the plug-in box are aligned with the sockets of the bus duct, and then the plug-in pins are connected to the sockets, and then the plug-in box and the bus duct are fixed with screws. Due to the large size of the plug-in box, this fixing method requires holding the plug-in box with both hands, and then slowly aligning the plug-in pins with the sockets. During the alignment and connection process, it is impossible to ensure that the plug-in box always remains parallel to the bus duct. Some plug-in pins may be inserted into the socket at an angle first, and then the remaining plug-in pins are inserted into the sockets of the bus duct in turn. During the insertion process, several plug-in pins are in a plug-in and pull-out state in turn, which easily increases the friction between the plug-in pins and the socket, thereby causing damage to the insulation layer. In severe cases, it may also cause the plug-in pins to deform, thereby affecting the subsequent use of the plug-in box. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that several plug pins are in a state of being plugged in and out sequentially, which easily increases the friction between the plug pins and the socket, thereby causing damage to the insulation layer. In severe cases, it may also cause the plug pins to deform, thereby affecting the subsequent use of the plug box. A bus duct plug-in and plug-out device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A bus duct plug-in and plug-out device is provided on the plug-in box body and is movably connected to the plug socket on the bus duct, comprising:

[0007] The limiting clamping assembly is provided on both sides of the plug box body and is used to position the plug box body and connect it to the bus duct;

[0008] A manual drive assembly is installed on the plug-in box and drives multiple limit clamping assemblies to simultaneously clamp or release the bus duct;

[0009] a first limit switch and a second limit switch, wherein the first limit switch and the second limit switch are respectively mounted on both sides of one of the limit clamping assemblies, and can act on the first limit switch or the second limit switch when the limit clamping assembly is clamped or released;

[0010] The lifting outer frame is arranged at the lower end of the inner part of the plug-in box body, and both ends of the lifting outer frame are equipped with screw adjustment parts for driving the lifting outer frame to move up and down;

[0011] A plurality of elastic plug-in pins, wherein the plurality of elastic plug-in pins are detachably mounted in the lifting outer frame and move downward with the lifting outer frame to be plugged into the bus duct. The lower ends of the elastic plug-in pins are inclined and have two states. In the first state, the angle between the lower end of the elastic plug-in pin and the vertical axis remains unchanged. In the second state, the angle between the lower end of the elastic plug-in pin and the vertical axis decreases.

[0012] A lifting and tightening member, which is mounted on the lifting outer frame and acts on the elastic plug pin to change the elastic plug pin from a first state to a second state;

[0013] When the limit clamping assembly acts on the first limit switch, the screw adjustment member first drives the plurality of elastic plug pins to be inserted downward into the socket, and then the lifting and tightening member acts downward on the elastic plug pins, causing the elastic plug pins to change from the first state to the second state;

[0014] When the limit clamping assembly acts on the second limit switch, the lifting and tightening member first moves upward and away from the elastic plug-in pin, so that the elastic plug-in pin returns to the first state, and then the screw adjustment member drives several elastic plug-in pins to be pulled out of the busbar slot.

[0015] Preferably, a horizontal mounting plate is provided in the plug box, and a circuit breaker connected to the elastic plug pin is mounted on the mounting plate. The elastic plug pin is arranged below the mounting plate, and a bottom hole for the elastic plug pin to pass through is provided on the bottom surface of the plug box.

[0016] Preferably, the manual drive assembly is arranged below the mounting plate, and includes two parallel rotating shafts and a worm arranged above the two rotating shafts, a transmission worm gear is installed at one end of the two rotating shafts, and a reversing worm gear is provided on one side of one rotating shaft that engages with the transmission worm gear on the rotating shaft, the reversing worm gear and the transmission worm gear on the other rotating shaft are both engaged with the worm gear, one end of the worm gear passes through the plug-in box and is coaxially connected to a handwheel, and both ends of the two rotating shafts pass through the plug-in box and are connected to the limit clamping assembly.

[0017] Preferably, arc-shaped guide grooves are symmetrically provided on both sides of the plug-in box body, and the limit clamping assembly includes an L-shaped rotating rod, a guide connecting column fixed to the top end of the side of the vertical part of the L-shaped rotating rod, a limit knocking block sleeved on the outside of the guide connecting column and an elastic protrusion installed on the top surface of the horizontal part of the L-shaped rotating rod. A limit socket adapted to be plugged into the end of the rotating shaft is opened in the middle part of the L-shaped rotating rod. When the L-shaped rotating rod is vertical, it is clamped on the bus duct, and the elastic protrusion is abutted against the upper bottom surface of the bus duct. The guide connecting column fits through the arc-shaped guide groove, and the limit knocking block is arranged in the plug-in box body and is threadedly fixed to the end of the guide connecting column.

[0018] Preferably, the end of the rotating shaft extending out of the plug-in box is in a prismatic structure, the outer side of the limiting insertion hole is a circular hole, and the inner side is a prismatic hole adapted to the prismatic part of the rotating shaft.

[0019] Preferably, a sealing outer frame is provided between the mounting plate outside the bottom hole and the bottom wall inside the plug-in box body, a sealed space communicating with the bottom hole is formed between the sealing outer frame and the mounting plate, and the lifting outer frame is provided in the sealed space.

[0020] Preferably, the upper end of the lifting outer frame is open and the lower end is sealed, both ends of the bottom of the lifting outer frame are provided with positioning connection holes adapted to the screw adjustment member, and the bottom of the lifting outer frame is provided with a plurality of installation slots for installing elastic plug pins.

[0021] Preferably, the elastic plug-in pin includes a copper busbar fixed in the lifting outer frame, a copper busbar connecting piece symmetrically arranged on the bottom surface of the copper busbar and passing through the installation slot, a spring piece installed on the opposite side of the two copper busbar connecting pieces, and a copper piece arranged close to the two spring pieces. The copper piece and the top of the adjacent spring piece are fixed to the copper busbar connecting piece by rivets, and the lower ends of the two spring pieces are inclined toward the direction of the copper busbar connecting piece.

[0022] Preferably, the lifting and tightening member includes an electric push rod symmetrically fixed on the inner bottom wall of the lifting outer frame, a lifting top plate connected to the top ends of the two electric push rods, and a plurality of lifting connecting columns vertically fixed to the bottom surface of the lifting top plate. The number of the lifting connecting columns corresponds to the number of elastic plug pins. The lifting connecting column slides through the copper bus to between the two spring sheets. The bottom end of the lifting connecting column is fixedly connected to the tightening bottom plate, and both ends of the tightening bottom plate are elastically connected to elastic push rods that are against the spring sheets. The end of the elastic push rod that is in contact with the spring sheet is spherical.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The present invention installs a limit clamping assembly, a first limit switch, a second limit switch, a lifting outer frame, an elastic plug-in pin, a lifting top tightening member and a screw adjusting member on the plug-in box body. When the plug-in box body is plugged into the bus duct, the limit clamping assembly is first used to position and fix the plug-in box body, and then the screw adjusting member drives a plurality of elastic plug-in pins to be vertically inserted into the plug-in seat on the bus duct at the same time. Thereafter, the lifting top tightening member acts downward on the elastic plug-in pins, so that the elastic plug-in pins are changed from the first state to the second state, thereby strengthening the connection between the elastic plug-in pins and the plug-in seat. Similarly, when the plug-in box body is taken out, the elastic plug-in pins are connected to the bus duct. When the connector is pulled out, the lifting and tightening member first moves away from the elastic plug-in pin upwards, so that the elastic plug-in pin returns to the first state, and then the screw adjusting member drives the elastic plug-in pin upwards to be quickly pulled out from the socket, thereby achieving simultaneous plugging or simultaneous pull-out of a plurality of elastic plug-in pins and the socket, which not only avoids problems such as wear and deformation caused by the sequential insertion of the plug-in pins during the plug-in process, but also ensures the stable connection between the elastic plug-in pin and the socket after plugging, and the fast pull-out of the elastic plug-in pin, thereby avoiding as much as possible the problems of loose plug connection or difficulty in pulling out, and improving the practicality of plug-in and pull-out use;

[0025] In addition, a manual drive component is provided in the plug-in box, which can simultaneously drive multiple limit clamping components to clamp on the bus duct at the same time, so as to quickly fix the plug-in box on the bus duct and realize self-locking after clamping, thus avoiding the problem of loose connection caused by vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of a bus duct plug-in and plug-out device according to embodiment 1 of the present invention;

[0027] Figure 2 This is a structural diagram of a bus duct plug-in and plug-out device according to embodiment 1 of the present invention after the plug-in box body is positioned and clamped;

[0028] Figure 3 This is a schematic diagram of the bottom structure of a plug-in box body of a bus duct plug-in box plug-in and unplugging device according to embodiment 1 of the present invention;

[0029] Figure 4 This is a cross-sectional view of a plug-in box body of a bus duct plug-in box plug-in and unplugging device according to embodiment 1 of the present invention;

[0030] Figure 5 This is a circuit connection principle diagram of embodiment 1 of a bus duct plug-in / plug-out device proposed by the present invention;

[0031] Figure 6 This is a schematic diagram of the top structure of a plug-in box body of a bus duct plug-in and plug-out device according to embodiment 1 of the present invention;

[0032] Figure 7This is a schematic structural diagram of a limiting clamping assembly of a bus duct plug-in / out device according to embodiment 1 of the present invention;

[0033] Figure 8 This is a schematic diagram of the top structure of the lifting outer frame of a bus duct plug-in and plug-out device according to embodiment 1 of the present invention;

[0034] Figure 9 This is a schematic diagram of the bottom structure of the lifting outer frame of a bus duct plug-in and plug-out device according to embodiment 1 of the present invention;

[0035] Figure 10 This is a schematic diagram of the elastic plug pin structure of a bus duct plug-in box plug-in and plug-out device according to embodiment 1 of the present invention;

[0036] Figure 11 This is another cross-sectional view of the plug-in box body of the bus duct plug-in and plug-out device according to embodiment 1 of the present invention;

[0037] Figure 12 This is a cross-sectional view of the lifting outer frame of a bus duct plug-in and plug-out device according to embodiment 1 of the present invention;

[0038] Figure 13 This is a schematic diagram of the sealing outer frame position structure of embodiment 1 of the bus duct plug-in and plug-out device proposed by the present invention.

[0039] Figure 14 This is a structural diagram of the plug-in box and the bus duct when they are separated in Example 2 of the present invention;

[0040] In the figure: 1. Bus duct; 2. Plug-in box; 3. Limit clamping assembly; 4. Manual drive assembly; 5. First limit switch; 6. Second limit switch; 7. Lifting frame;

[0041] 8. Elastic plug-in pin; 9. Lifting and tightening member; 10. Circuit breaker; 11. Screw adjustment member;

[0042] 12. Sealing outer frame; 101. Positioning slot; 102. Positioning hole; 103. Connector;

[0043] 201, mounting plate; 202, arc-shaped guide groove; 203, bottom hole; 31, L-shaped rotating rod; 32, guide connecting column; 33, limit knock block; 34, limit socket; 35, elastic protrusion;

[0044] 41. Rotating shaft; 42. Worm; 43. Reversing worm gear; 44. Transmission worm gear; 45. Handwheel;

[0045] 701, positioning connection hole; 702, installation notch; 81, copper busbar; 82, copper busbar connecting piece;

[0046] 83. Spring sheet; 84. Copper sheet; 85. Rivet; 91. Electric push rod; 92. Lifting top plate;

[0047] 93. Lifting connecting column; 94. Tightening bottom plate; 95. Elastic push rod. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0049] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0050] During the process of plugging the plug pins into the socket 103, several plug pins are generally arranged in a staggered structure to improve the connection stability, increase the contact area, facilitate heat dissipation, etc. During use, it is necessary to ensure that the plug pins are inserted tightly in the socket 103 as much as possible and are not easily loosened by external interference, resulting in poor contact. At the same time, it is also necessary to be able to pull out the plug pins more conveniently and quickly when unplugging them so as to remove the socket box. This creates a contradiction in the design of the entire plug pin. If the plug pins are tightly plugged into the socket 103, there is a problem that they are difficult to remove. The following will combine this problem with the background technology to explain the solution.

[0051] Example 1, reference Figures 1-13A bus duct plug-in and plug-out device is arranged on the plug-in box body 2 and is movably connected to the plug-in seat 103 on the bus duct 1, including: a limit clamping component 3, a manual drive component 4, a lifting outer frame 7, a plurality of elastic plug-in pins 8, a lifting top tightening member 9, a first limit switch 5 and a second limit switch 6. The limit clamping assembly 3 is arranged on both sides of the plug-in box body 2, for positioning the plug-in box body 2 and connecting it to the bus duct 1. The manual drive assembly 4 is installed on the plug-in box body 2, and drives multiple limit clamping assemblies 3 to clamp or release the bus duct 1 at the same time. The lifting outer frame 7 is arranged at the lower end of the interior of the plug-in box body 2. Both ends of the lifting outer frame 7 are equipped with screw adjustment members 11 for driving the lifting outer frame 7 to lift. Several elastic plug-in pins 8 are detachably installed in the lifting outer frame 7. The lower ends of the elastic plug-in pins 8 are inclined and have two states. In the first state, the angle between the lower end of the elastic plug-in pin 8 and the vertical axis remains unchanged. In the second state, the angle between the lower end of the elastic plug-in pin 8 and the vertical axis becomes smaller. The lifting and tightening member 9 is installed on the lifting outer frame 7 and acts on the elastic plug-in pin 8. The first limit switch 5 and the second limit switch 6 are respectively installed on both sides of one of the limit clamping assemblies 3. When the plug-in box 2 is installed on the bus duct 1 using the plug-in device, the manual drive component 4 first simultaneously controls multiple limit clamping components 3 to fix the plug-in box 2 on the bus duct 1, completing the positioning of the elastic plug-in pins 8 and the plug-in seat 103, and under the action of the first limit switch 5, the screw adjustment member 11 drives the lifting outer frame 7 and several elastic plug-in pins 8 to be inserted downward into the plug-in seat 103, and then the lifting and tightening member 9 acts on the elastic plug-in pins 8 to make the connection between the elastic plug-in pins 8 and the plug-in seat 103 more stable. When the bus duct 1 is pulled out by the plug-in device, the manual drive component 4 is also first used to simultaneously control multiple limit clamping components 3 to release the fixation between the plug-in box 2 and the bus duct 1. Under the action of the second limit switch 6, the lifting and tightening member 9 first leaves the elastic plug-in pin 8, and then the screw adjustment member 11 drives the lifting outer frame 7 and several elastic plug-in pins 8 to pull out the plug-in seat upward. During the entire plugging and unplugging process, multiple elastic plug pins 8 are simultaneously plugged in or unplugged from the socket 103. This not only avoids wear and deformation caused by the sequential insertion of the plug pins during the plugging process, but also ensures a stable connection between the elastic plug pins 8 and the socket 103 after plugging, and a fast removal of the elastic plug pins 8, thereby minimizing the problems of loose plug connections or difficulty in removal. The entire process will be described in detail below.

[0052] First, the specific structure of the plug-in box 2 is further explained. A horizontal mounting plate 201 is provided in the plug-in box 2. The two side walls of the mounting plate 201 are fixed to the inner wall of the plug-in box 2, and a circuit breaker 10 is installed on the mounting plate 201. The circuit breaker 10 is connected to the elastic plug pin 8 to avoid safety accidents caused by overload. Arc-shaped guide grooves 202 are symmetrically provided on both sides of the plug-in box 2 to facilitate limiting the position of the limit clamping assembly 3. The bottom surface of the plug-in box 2 is provided with a bottom hole 203 corresponding to the socket 103, and the elastic plug pin 8 can move downward through the bottom hole 203.

[0053] The limiting clamping assembly 3 is described in detail below:

[0054] like Figure 1-Figure 7 As shown, there are four groups of limiting clamping components 3, which are respectively located at the two ends of the two sides of the plug-in box 2, and the plug-in box 2 is fixed to the bus duct 1 from the four corners of the four plug-in boxes 2.

[0055] Furthermore, the limit clamping assembly 3 includes an L-shaped rotating rod 31, a guide connecting column 32 fixed to the top side of the vertical part of the L-shaped rotating rod 31, a limit knocking block 33 sleeved on the outside of the guide connecting column 32 and an elastic protrusion 35 installed on the top surface of the horizontal part of the L-shaped rotating rod 31. The middle part of the L-shaped rotating rod 31 is provided with a limit socket 34 that is plugged into and adapted to the end of the manual drive assembly 4. During the process of the L-shaped rotating rod 31 rotating from tilt to vertical, the plug-in box 2 is fixed to the bus duct 1. Specifically, when the L-shaped rotating rod 31 is rotated to vertical, the elastic protrusion 35 presses against the bottom surface of the upper end part of the bus duct 1, and under the action of the elastic force, the L-shaped rotating rod is maintained. The rod 31 is stable when it rotates vertically. When the L-shaped rotating rod 31 rotates following the manual drive component 4, the guide connecting column 32 rotates around the limit socket 34, that is, it rolls in the arc guide groove 202. Since the limit knocking block 33 is arranged in the plug-in box 2 and is threadedly fixed to the end of the guide connecting column 32, the setting of the limit knocking block 33 can limit the L-shaped rotating rod 31, which is convenient for the connection between the L-shaped rotating rod 31 and the manual drive component 4, and can also keep the L-shaped rotating rod 31 attached to the outer wall of the plug-in box 2. In addition, when rotating following the guide connecting column 32, it can touch the first limit switch 5 and the second limit switch 6.

[0056] Furthermore, the outer side of the limiting insertion hole 34 is a round hole and the inner side is a prismatic hole, so that when the L-shaped rotating rod 31 is connected to the manual driving component 4, the manual driving component 4 can drive the L-shaped rotating rod 31 to rotate.

[0057] The manual drive assembly 4 is described in detail below:

[0058] Reference Figure 1-Figure 7The manual drive assembly 4 is arranged below the mounting plate 201 and includes two parallel rotating shafts 41 and a worm 42 arranged above the two rotating shafts 41. A transmission worm gear 44 is mounted on one end of each of the two rotating shafts 41. A reversing worm gear 43 meshing with the transmission worm gear 44 on the rotating shaft 41 is provided on one side of one of the rotating shafts 41. The reversing worm gear 43 and the transmission worm gear 44 on the other rotating shaft 41 are both meshed with the worm 42. The reversing worm gear 43 is provided so that the two transmission worm gears 44 rotate in opposite directions when rotating simultaneously. The meshing of the worm 42 with the transmission worm gear 44 and the reversing worm gear 43 can also achieve The self-locking mechanism prevents the rotating shaft 41 from automatically deflecting. One end of the worm 42 passes through the plug-in box 2 and is coaxially connected to a handwheel 45. Both ends of the two rotating shafts 41 extend through the plug-in box 2 and connect to the limit sockets 34 of the limit clamping assembly 3. When the handwheel 45 drives the rotating shaft 41 to rotate, the limit clamping assembly 3 connected to the rotating shaft 41 rotates, ultimately driving the four limit clamping assemblies 3 to rotate simultaneously, with the limit clamping assemblies 3 on both sides of the plug-in box 2 rotating in opposite directions. This makes the connection between the plug-in box 2 and the bus duct 1 more convenient, eliminating the need to adjust the limit clamping assemblies 3 one by one. The end of the rotating shaft 41 extending outside the plug-in box 2 is a prismatic structure that plugs and fits into the limit sockets 34.

[0059] As the manual drive assembly 4 rotates and clamps the limit clamping assembly 3, it causes the limit striking block 33 to act on the first and second limit switches 5 and 6. Both the first and second limit switches 5 and 6 are automatic reset limit switches. Their specific operating principle is to utilize the collision of mechanical moving parts to actuate their contacts for on / off control. The following describes the first and second limit switches 5 and 6 in detail, along with their circuit connections.

[0060] Reference Figure 1-Figure 5 , the first limit switch 5 and the second limit switch 6 are set in parallel. Figure 6In the circuit shown in FIG, the first limit switch 5 and the second limit switch 6 are both externally connected to the same power supply and controller. When the limit clamping assembly 3 acts on the first limit switch 5, under the control of the controller, the screw adjustment member 11 first drives the plurality of elastic plug pins 8 downwardly to insert into the socket 103, and then the lifting and pressing member 9 acts downwardly on the elastic plug pins 8, causing the elastic plug pins 8 to change from the first state to the second state. When the limit clamping assembly 3 acts on the second limit switch 6, under the control of the controller, the lifting and pressing member 9 first moves upward away from the elastic plug pin 8, causing the elastic plug pin 8 to return to the first state, and then the screw adjustment member 11 drives the plurality of elastic plug pins 8 to be pulled out of the bus duct 1. When the limit clamping assembly 3 no longer acts on the first limit switch 5 or the second limit switch 6, the circuit is automatically disconnected to avoid circuit interference. During the above-mentioned circuit changes, in conjunction with the plugging and unplugging of the elastic plug pin 8 and the socket 103, the elastic plug pin 8 is inserted into the socket 103. During the process of inserting the elastic plug pin 8 into the socket 103, the limit clamping assembly 3 is required to clamp the plug box 2 and the bus duct 1 into position, and then the screw adjustment member 11 works first, and the lifting and tightening member 9 works later, so as to avoid the problem of inaccurate connection between the elastic plug pin 8 and the socket 103 or damage to the elastic plug pin 8 when the positioning is not accurate. At the same time, when the elastic plug pin 8 is pulled out, the limit clamping assembly 3 is required to release the clamping connection between the plug box 2 and the bus duct 1, and then the lifting and tightening member 9 works first, and the screw adjustment member 11 works later, so as to reduce the error rate, that is, when there is no need to unplug the plug box 2, the elastic plug pin 8 has been unplugged from the socket 103, resulting in the problem of overall power failure of the plug box 1.

[0061] The following describes the screw adjustment member 11 and the lifting outer frame 7 in detail:

[0062] Reference Figures 8-13 The screw adjustment member 11 includes a servo motor and a screw. The servo motor is installed on the bottom wall of the plug-in box 2. The upper end of the lifting outer frame 7 is open and the lower end is sealed. Both ends of the bottom of the lifting outer frame 7 are provided with positioning connection holes 701 adapted to the screw adjustment member 11. The symmetrical design can ensure that the screw adjustment member 11 can more stably regulate the lifting of the lifting outer frame 7. The screw of the screw adjustment member 11 passes through the positioning connection holes 701 and adapts to it. The bottom of the lifting outer frame 7 is provided with a plurality of mounting notches 702 for the elastic plug pins 8 to facilitate the installation and setting of the elastic plug pins 8. The elastic plug pins 8 can be detachably installed and then installed and adapted according to the plug sockets 103 on the bus duct 1.

[0063] In addition, in order to ensure the sealing effect at the sealing outer frame 12, a sealing outer frame 12 is provided between the mounting plate 201 outside the bottom hole 203 and the bottom wall inside the plug-in box body 2. A sealed space communicating with the bottom hole 203 is formed between the sealing outer frame 12 and the mounting plate 201, so that the plug-in box body 2 is divided into two parts to avoid mutual interference. The lifting outer frame 7 is arranged in the sealed space.

[0064] The elastic plug pin 8 is described in detail below:

[0065] Reference Figures 8-13 The elastic plug pin 8 includes a copper bus 81 fixed in the lifting outer frame 7, a copper bus connecting piece 82 symmetrically arranged on the bottom surface of the copper bus 81 and passing through the mounting slot 702, a spring piece 83 installed on the opposite side of the two copper bus connecting pieces 82, and a copper piece 84 set close to the two spring pieces 83. The copper piece 84 and the top of the adjacent spring piece 83 and the copper bus connecting piece 82 are fixed by rivets 85 to achieve conductivity between the copper piece 84 and the copper bus 81. The lower ends of the two spring pieces 83 are inclined toward the direction of the copper bus connecting piece 82, and the copper piece 84 is set following the spring piece 83. The inclined setting of the spring piece 83 will bend outward after being subjected to force on the inside, thereby driving the copper piece 84 to follow the outward push, thereby enhancing the tightness of the connection and fit of the copper piece 84 in the socket 103, that is, completing the transition of the elastic plug pin 8 from the first state to the second state.

[0066] The lifting and tightening member 9 is described in detail below:

[0067] Reference Figures 8-13 The lifting and tightening member 9 includes an electric push rod 91 symmetrically fixed on the inner bottom wall of the lifting outer frame 7, a lifting top plate 92 connected to the top of the two electric push rods 91, and a plurality of lifting connecting columns 93 vertically fixed to the bottom surface of the lifting top plate 92. The number of the lifting connecting columns 93 corresponds to the number of the elastic plug pins 8. The lifting connecting column 93 slides through the copper bus 81 to between the two spring sheets 83, that is, the lifting connecting column 93 can be driven by the lifting top plate 92 to slide up and down in the copper bus 81. The bottom end of the lifting connecting column 93 is fixedly connected to a tightening bottom plate 94, and both ends of the tightening bottom plate 94 are elastically connected to elastic push rods 95 that are against the spring sheet 83. The elastic push rod 95 and the spring sheet 83 The contacting ends are spherical. When the lifting connecting column 93 slides downward, the spherical end of the elastic push rod 95 first contacts the spring sheet 83, and when it continues to descend, due to the inclined setting of the lower end of the spring sheet 83, the spring sheet 83 is pushed to bend outward. The greater the descending distance, the greater the force on the spring sheet 83, and the elastic push rod 95 is subjected to the reaction force, and moves toward the bottom plate 94, and itself also contracts. Under the double elastic force of the spring sheet 83 and the elastic push rod 95, the copper sheet 84 is more firmly fixed in the socket 103. Even after the spring sheet 83 ages and loses its elasticity, it can still provide elastic support to ensure sufficient contact pressure, thereby increasing its service life.

[0068] Example 2, reference Figures 1-14 When it is necessary to quickly position the plug-in box 2 on the bus duct 1 so that the elastic plug-in pin 8 corresponds to the plug-in seat 103 and the clamping adjustment of the limit clamping component 3 is quickly performed, positioning slots 101 for positioning with the limit clamping component 3 can be provided on both sides of the plug-in seat 103. After the plug-in box 2 is positioned by the limit clamping component 3 and the positioning slots 101, the elastic plug-in pin 8 corresponds vertically to the plug-in seat 103, and a positioning hole 102 is provided on one side of each positioning slot 101. Specific positioning steps: When the L-shaped rotating rod 31 is vertical, it fits into the positioning slot 101 of the bus duct 1. During the process of rotating from tilted to vertical, the plug-in box 2 is fixed on the bus duct 1, and the elastic protrusion 35 is pushed into the positioning hole 102. When the L-shaped rotating rod 31 is rotated vertically, the elastic protrusion 35 is first compressed and then pushed into the positioning hole 102, making the connection between the L-shaped rotating rod 31 and the bus duct 1 tighter.

[0069] Working principle: When connecting the plug-in box 2 to the bus duct 1, first move the plug-in box 2 to the top of the bus duct 1, and move the plug-in box 2 along the length direction of the bus duct 1 until the limit clamping assembly 3 is moved to the positioning slot 101 of the bus duct 1, and rotate the handwheel 45. The rotation of the handwheel 45 drives the worm 42 to rotate. The rotation of the worm 42 drives the transmission worm gear 44 and the reversing worm gear 43 engaged therewith to rotate simultaneously. When the reversing worm gear 43 rotates, it drives the other transmission worm gear 44 to rotate in the opposite direction, so that the two transmission worm gears 44 turn to the same direction. On the contrary, the transmission worm gear 44 rotates to drive the rotating shaft 41 to rotate, and the rotation of the rotating shaft 41 drives the L-shaped rotating rod 31 of the limiting clamping assembly 3 to rotate, and when the two rotating shafts 41 rotate in opposite directions, the L-shaped rotating rods 31 on both sides of the plug-in box 2 rotate in opposite directions, until the multiple L-shaped rotating rods 31 start to rotate from tilted to vertical, until they rotate into the positioning card slot 101, and the L-shaped rotating rods 31 remain in a vertical state and fit into the positioning card slot 101. At this time, the elastic protrusion 35 pushes into the positioning hole 102, completing the positioning and fixing between the plug-in box 2 and the bus duct 1;

[0070] At the same time, when the limit knocking block 33 follows the L-shaped rotating rod 31 to rotate to vertical, the limit knocking block 33 knocks the first limit switch 5. After the first limit switch 5 is knocked, the controller starts to control the screw adjusting member 11 to work, and the screw adjusting member 11 drives the lifting outer frame 7, the elastic plug-in foot 8, and the lifting and tightening member 9 to move downward together until the elastic plug-in foot 8 is inserted into the socket 103 on the bus duct 1. Then, the electric push rod 91 of the lifting and tightening member 9 is controlled to start contracting, driving the lifting connecting column 93, the tightening bottom plate 94 and the elastic push rod 95 to move downward. During the downward movement of the tightening bottom plate 94 and the elastic push rod 95, the tightening push rod pushes the spring sheet 83 outward to expand, so that the lower ends of the two spring sheets 83 expand outward and drive the copper sheet 84 to fit more tightly with the socket 103, completing the plugging process;

[0071] When it is necessary to remove the plug box body 2, the hand wheel 45 is rotated again and the hand wheel 45 is rotated in the opposite direction, driving the L-shaped rotating rod 31 to rotate in the opposite direction, and the L-shaped rotating rod 31 begins to disengage from the positioning slot 101 until the disengagement is completed, and the limit knocking block 33 knocks the second limit switch 6. After the second limit switch 6 is knocked, the controller begins to control the electric push rod 91 of the lifting and tightening member 9 to extend. The electric push rod 91 extends and drives the lifting connecting column 93, the tightening bottom plate 94, and the elastic push rod 95 to move upward from between the two spring plates 83 until they are out of contact with the spring plates 83. The two spring plates 83 are elastically restored and drive the copper plate 84 to recover. At this time, the tightening force between the copper plate 84 and the plug seat 103 becomes weaker, and then the screw adjusting member 11 is controlled to work, driving the lifting outer frame 7, the elastic plug pin 8, and the lifting and tightening member 9 to move upward until the elastic plug pin 8 is disengaged from the plug seat 103, completing the separation between the plug box body 2 and the bus duct 1.

[0072] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A busbar duct plug-in and plug-out device, which is arranged on a plug-in box body (2) and is movably connected to a plug-in seat (103) on a busbar duct (1), characterized in that: include: A position limiting clamping assembly (3), the position limiting clamping assembly (3) being arranged on both sides of the plug-in box (2) and used for positioning the plug-in box (2) and connecting it to the bus duct (1); A manual drive assembly (4), the manual drive assembly (4) being mounted on the plug-in box (2) and driving a plurality of position limiting clamping assemblies (3) to simultaneously clamp or release the bus duct (1); a first limit switch (5) and a second limit switch (6), wherein the first limit switch (5) and the second limit switch (6) are respectively mounted on both sides of one of the limit clamping assemblies (3), and when the limit clamping assembly (3) is clamped or released, the first limit switch (5) or the second limit switch (6) can be acted on; The lifting outer frame (7) is arranged at the lower end of the inner part of the plug-in box (2), and both ends of the lifting outer frame (7) are equipped with screw adjustment members (11) for driving the lifting outer frame (7) to move up and down; A plurality of elastic plug-in pins (8), wherein the plurality of elastic plug-in pins (8) are detachably mounted in the lifting outer frame (7) and move downward with the lifting outer frame (7) to be plugged into the bus duct (1); the lower ends of the elastic plug-in pins are arranged in an inclined manner and have two states: in the first state, the angle between the lower end of the elastic plug-in pin and the vertical axis remains unchanged; in the second state, the angle between the lower end of the elastic plug-in pin and the vertical axis becomes smaller; A lifting and tightening member (9), wherein the lifting and tightening member (9) is mounted on the lifting outer frame (7) and acts on the elastic plug-in pin (8), causing the elastic plug-in pin (8) to change from a first state to a second state; When the limit clamping assembly (3) acts on the first limit switch (5), the screw adjusting member (11) first drives a plurality of elastic plug pins (8) to be inserted downward into the socket (103), and then the lifting and tightening member (9) acts downward on the elastic plug pins (8), causing the elastic plug pins (8) to change from the first state to the second state; When the limit clamping assembly (3) acts on the second limit switch (6), the lifting and tightening member (9) first moves upward away from the elastic plug-in pin (8), so that the elastic plug-in pin (8) returns to the first state, and then the screw adjustment member (11) drives the plurality of elastic plug-in pins (8) to be pulled out of the bus duct (1).

2. A bus duct plug-in and plug-out device according to claim 1, characterized in that: A horizontal mounting plate (201) is provided in the plug-in box (2), and a circuit breaker (10) connected to an elastic plug-in pin (8) is mounted on the mounting plate (201). The elastic plug-in pin (8) is provided below the mounting plate (201), and a bottom hole (203) for the elastic plug-in pin (8) to pass through is provided on the bottom surface of the plug-in box (2).

3. A bus duct plug-in and plug-out device according to claim 2, characterized in that: The manual drive assembly (4) is arranged below the mounting plate (201), and comprises two rotating shafts (41) arranged in parallel and a worm (42) arranged above the two rotating shafts (41). A transmission worm gear (44) is installed at one end of each of the two rotating shafts (41). A reversing worm gear (43) meshing with the transmission worm gear (44) on the rotating shaft (41) is provided on one side of one of the rotating shafts (41). The reversing worm gear (43) and the transmission worm gear (44) on the other rotating shaft (41) are both meshed with the worm gear (42). One end of the worm gear (42) passes through the plug-in box (2) and is coaxially connected to a handwheel (45). Both ends of the two rotating shafts (41) pass through the plug-in box (2) and are connected to the limit clamping assembly (3).

4. A bus duct plug-in and plug-out device according to claim 2, characterized in that: The two sides of the plug-in box (2) are symmetrically penetrated with arc-shaped guide grooves (202). The limit clamping assembly (3) includes an L-shaped rotating rod (31), a guide connecting column (32) fixed on the top of the side of the vertical part of the L-shaped rotating rod (31), a limit knocking block (33) sleeved on the outside of the guide connecting column (32), and an elastic protrusion (35) installed on the top surface of the horizontal part of the L-shaped rotating rod (31). The middle part of the L-shaped rotating rod (31) is provided with a limit socket (34) that is plugged and adapted to the end of the rotating shaft (41). When the L-shaped rotating rod (31) is vertical, it is clamped on the bus duct (1), and the elastic protrusion (35) is against the bottom surface of the upper end of the bus duct (1). The guide connecting column (32) fits through the arc-shaped guide groove (202). The limit knocking block (33) is arranged in the plug-in box (2) and is screwed to the end of the guide connecting column (32).

5. A bus duct plug-in and plug-out device according to claim 4, characterized in that: The end of the rotating shaft (41) extending outside the plug-in box (2) is in a prismatic structure, and the outer side of the limiting insertion hole (34) is a circular hole, and the inner side is a prismatic hole adapted to the prismatic portion of the rotating shaft (41).

6. A bus duct plug-in and plug-out device according to claim 2, characterized in that: A sealing outer frame (12) is provided between the mounting plate (201) outside the bottom hole (203) and the inner bottom wall of the plug-in box (2); a sealed space communicating with the bottom hole (203) is formed between the sealing outer frame (12) and the mounting plate (201); and the lifting outer frame (7) is provided in the sealed space.

7. The bus duct plug-in and plug-out device according to claim 1, characterized in that: The upper end of the lifting outer frame (7) is open and the lower end is sealed. Both ends of the bottom of the lifting outer frame (7) are provided with positioning connection holes (701) adapted to the screw adjustment member (11). The bottom of the lifting outer frame (7) is provided with a plurality of installation slots (702) for installing the elastic plug pins (8).

8. The bus duct plug-in and plug-out device according to claim 7, characterized in that: The elastic plug pin (8) comprises a copper bar (81) fixed in the lifting outer frame (7), a copper bar connecting piece (82) symmetrically arranged on the bottom surface of the copper bar (81) and passing through the installation slot (702), a spring piece (83) installed on the opposite sides of the two copper bar connecting pieces (82), and a copper piece (84) arranged close to the two spring pieces (83), wherein the copper piece (84) is fixed to the top of the adjacent spring piece (83) and the copper bar connecting piece (82) by a rivet (85), and the lower ends of the two spring pieces (83) are inclined toward the copper bar connecting piece (82).

9. The bus duct plug-in and plug-out device according to claim 8, characterized in that: The lifting and tightening member (9) comprises an electric push rod (91) symmetrically fixed on the inner bottom wall of the lifting outer frame (7), a lifting top plate (92) connected to the top ends of the two electric push rods (91), and a plurality of lifting connection columns (93) vertically fixed to the bottom surface of the lifting top plate (92). The number of the lifting connection columns (93) corresponds to the number of the elastic plug pins (8). The lifting connection columns (93) slide through the copper bar (81) to between the two spring sheets (83). The bottom end of the lifting connection column (93) is fixedly connected to a tightening bottom plate (94), and both ends of the tightening bottom plate (94) are elastically connected to elastic push rods (95) that abut against the spring sheets (83). The ends of the elastic push rods (95) that abut against the spring sheets (83) are spherical.

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