Plugging device for bus duct jack box

Abstract

The invention discloses a bus duct jack box plugging device comprising limiting clamping assemblies which are arranged on two side surfaces of a jack box body and are used for positioning the jack box body and connecting the jack box body with a bus duct; a manual driving assembly which is installed on the plugging box body and drives the plurality of limiting clamping assemblies to clamp or loosen the bus duct at the same time; the first limiting switch and the second limiting switch are installed on the two sides of one limiting clamping assembly respectively, and when the limiting clamping assemblies are clamped or loosened, the first limiting switch or the second limiting switch is knocked; and the lifting outer frame is arranged at the lower end of the interior of the inserting box body, and lead screw adjusting pieces used for driving the lifting outer frame to ascend and descend are installed at the two ends of the lifting outer frame. According to the invention, the elastic plugging pins and the plugging seats are vertically and correspondingly plugged and fixed at the same time, and the problems of abrasion, deformation of the elastic plugging pins and the like caused by inclination in the plugging process are avoided as much as possible.

Description

Technical Field

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

[0002] The bus duct plug-in box is an electrical device used to tap the power supply of the bus duct. It is usually made of metal or high-strength plastic. When in use, the bus duct plug-in box is connected to the slot of the bus duct through the plug-in pins, and the power in the bus duct is introduced into the plug-in box. Then, after the control and distribution of the electrical components such as the circuit breaker in the box, the power is output to the electrical equipment. In this way, it is convenient to tap the power from the main line of the bus duct to provide power support for different electrical equipment. Due to its advantages of convenient tapping, safety and reliability, and flexible installation, the bus duct plug-in box is widely used in various large buildings, industrial plants, shopping malls, high-rise buildings and other places.

[0003] At present, the connection between the bus duct plug-in box and the bus duct is generally a plug-in connection, that is, the bus duct plug-in box is first moved to the top of the bus duct, and after the plug-in pins of the plug-in box are aligned with the sockets of the bus duct, the plug-in pins are first connected to the socket, and then the plug-in box and the bus duct are fixed with screws or the like. 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 socket. During the alignment and connection process, it cannot be ensured that the plug-in box always remains parallel to the bus duct, and some of the 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 one by one. During the insertion process, several plug-in pins are in a plug-in and pull-out state one by one, which easily increases the friction between the plug-in pin and the socket, thereby causing damage to the insulation layer. In severe cases, the plug-in pins may also be deformed, 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 in sequence, 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 a plug-in box body and is movably connected to a plug-in socket on the bus duct, comprising:

[0007] A limit clamping assembly, which is arranged on two sides of the plug-in box and is used to position the plug-in box and connect it to the bus duct;

[0008] A manual drive assembly, which is mounted on the plug-in box and drives a plurality of 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 installed 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 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, wherein the lower end of the elastic plug-in pin is inclined and has two states, wherein in the first state, the angle between the lower end of the elastic plug-in pin and the vertical axis remains unchanged, and in the second state, the angle between the lower end of the elastic plug-in pin and the vertical axis becomes smaller;

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

[0013] When the limit clamping assembly acts on the first limit switch, firstly, the screw adjusting member drives a plurality of elastic plug pins to be inserted downward into the plug socket, and then the lifting and tightening member acts downward on the elastic plug pins, so that the elastic plug pins 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, a reversing worm gear is provided on one side of one of the rotating shafts and meshes 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 meshed with the worm, 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 penetrated 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. The middle part of the L-shaped rotating rod is provided with a limit socket adapted to be plugged in with the end of the rotating shaft. 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, a sealing space communicating with the bottom hole is formed between the sealing outer frame and the mounting plate, and the lifting outer frame is arranged 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 bar fixed in the lifting outer frame, a copper bar connecting piece symmetrically arranged on the bottom surface of the copper bar and passing through the installation slot, a spring sheet installed on the opposite sides of the two copper bar connecting pieces, and a copper sheet arranged close to the two spring sheets, the copper sheet and the top of the adjacent spring sheet are fixed to the copper bar connecting piece by rivets, and the lower ends of the two spring sheets are inclined toward the copper bar 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 and tightening columns corresponds to the number of elastic plug-in pins. The lifting and tightening columns slide through the copper bus to between the two spring sheets. The bottom end of the lifting and tightening 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, and the ends of the elastic push rods that are in contact with the spring sheets are 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 socket on the bus duct at the same time. After that, the lifting top tightening member acts downward on the elastic plug-in pin to change the elastic plug-in pin from the first state to the second state, thereby enhancing the connection between the elastic plug-in pin and the plug-in socket. Similarly, when the plug-in box body is taken out, the elastic plug-in pin is connected to the plug-in socket. When the connector is pulled out, the lifting and tightening member first moves upward away from the elastic plug-in pin, so that the elastic plug-in pin returns to the first state, and then the lead screw adjusting member drives the elastic plug-in pin upward to be quickly pulled out from the socket, so that a plurality of elastic plug-in pins and the socket are plugged in or pulled out at the same time, which not only avoids the problems of wear and deformation caused by the sequential insertion of the plug-in pins during the plug-in process, but also ensures the stability of the connection between the elastic plug-in pin and the socket after plug-in, and the speed of pulling out the elastic plug-in pin, and avoids the problems of loose plug-in connection or difficulty in pulling out as much as possible, thereby 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 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 schematic diagram of a bus duct plug-in and plug-out device embodiment 1 proposed by the present invention;

[0027] Figure 2 This is a schematic structural diagram of a bus duct plug-in box plug-in and plug-out device 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 device embodiment 1 proposed by the present invention;

[0029] Figure 4 A cross-sectional view of a plug-in box body of a bus duct plug-in box plug-in device embodiment 1 proposed by the present invention;

[0030] Figure 5 This is a circuit connection principle diagram of a bus duct plug-in and plug-out device embodiment 1 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 box plug-in and unplugging device according to Embodiment 1 of the present invention;

[0032] Figure 7This is a schematic structural diagram of a limit clamping assembly of a bus duct plug-in and plug-out device embodiment 1 proposed by 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 embodiment 1 proposed by the present invention;

[0034] Fig. 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 embodiment 1 proposed by the present invention;

[0035] Fig.10 A schematic diagram of the structure of the elastic plug pins of a bus duct plug-in box plug-in device according to Embodiment 1 of the present invention;

[0036] Fig.11 Another cross-sectional view of the plug-in box body of the bus duct plug-in box plug-in and unplugging device embodiment 1 proposed by the present invention;

[0037] Fig.12 A cross-sectional view of a lifting outer frame of a bus duct plug-in and plug-out device embodiment 1 proposed by the present invention;

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

[0039] Fig.14 It is a structural schematic diagram of the plug-in box and the bus duct when they are separated in Embodiment 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 parts; 10. Circuit breaker; 11. Screw adjustment parts;

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

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

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

[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 ejector 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 is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on 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 tightly inserted into the socket 103 as much as possible and not easily become loose due to 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, so as to remove the socket box. This creates a contradiction in the design of the entire plug pin. If the plug pin is tightly inserted into the socket 103, there is a problem that it is not easy to remove. The following will combine this problem with the background technology to explain the solution.

[0051] Example 1, reference Figure 1-Figure 13A bus duct plug-in and plug-out device is arranged on a plug-in box body 2 and is movably connected to a plug-in socket 103 on a bus duct 1, comprising: 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 the two sides of the plug-in box 2, and is used to position the plug-in box 2 and connect it to the bus duct 1. The manual drive assembly 4 is installed on the plug-in box 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 inner part of the plug-in box 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, completes the positioning of the elastic plug pins 8 and the plug socket 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 pins 8 to be inserted downward into the plug socket 103, and then the lifting and tightening member 9 acts on the elastic plug pins 8 to make the connection between the elastic plug pins 8 and the plug socket 103 more stable. When the bus duct 1 is pulled out by the plug-in device, the manual drive component 4 also simultaneously controls 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 pins 8, and then the screw adjustment member 11 drives the lifting and tightening member 9 and several elastic plug pins 8 to pull out the plug socket upward. During the entire plugging and unplugging process, several elastic plug pins 8 are plugged in or unplugged from the socket 103 at the same time, which not only avoids the problems of wear and deformation caused by the sequential insertion of the plug pins during the plugging process, but also ensures the stability of the connection between the elastic plug pins 8 and the socket 103 after plugging, and the fast unplugging of the elastic plug pins 8, and avoids the problems of loose plug connection or difficult unplugging as much as possible. The whole 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 arranged 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 guide grooves 202 are symmetrically penetrated on both side surfaces of the plug-in box 2 to facilitate the limiting clamping assembly 3. The bottom surface of the plug-in box 2 is provided with a bottom hole 203 corresponding to the plug 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 limit 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 end 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 in and adapted to the end of the manual drive assembly 4. During the process of the L-shaped rotating rod 31 rotating from tilted to vertical, the plug-in box 2 is fixed on the bus duct 1. Specifically, when the L-shaped rotating rod 31 rotates to vertical, the elastic protrusion 35 presses against the bottom surface of the upper end part of the bus duct 1, and the L-shaped rotating rod is kept in the vertical direction under the action of the elastic force. The rod 31 is stable when it rotates vertically. When the L-shaped rotating rod 31 follows the manual driving component 4 to rotate, the guide connecting column 32 rotates around the limit socket 34, that is, 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 driving 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 following the guide connecting column 32 to rotate, 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 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, and a reversing worm gear 43 meshing with the transmission worm gear 44 on the rotating shaft 41 is arranged 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 arranged so that the two transmission worm gears 44 rotate in opposite directions when rotating at the same time, and the meshing of the worm 42 with the transmission worm gear 44 and the reversing worm gear 43 can also realize The self-locking function is realized to prevent the rotating shaft 41 from automatically deflecting. One end of the worm 42 passes through the plug-in box 2 and is coaxially connected with a hand wheel 45. Both ends of the two rotating shafts 41 pass through the plug-in box 2 and are connected to the limiting socket 34 of the limiting clamping assembly 3. When the hand wheel 45 drives the rotating shaft 41 to rotate, the limiting clamping assembly 3 connected to the rotating shaft 41 rotates, and finally drives the four limiting clamping assemblies 3 to rotate at the same time, and the limiting clamping assemblies 3 on both sides of the plug-in box 2 rotate in opposite directions. This makes it more convenient to connect the plug-in box 2 and the bus duct 1, without the need to clamp and adjust the limiting clamping assemblies 3 one by one. The end of the rotating shaft 41 extending out of the plug-in box 2 is a prismatic structure, which is plugged and adapted to the limiting socket 34.

[0059] When the manual drive assembly 4 drives the limit clamping assembly 3 to rotate and clamp, the limit knocking block 33 acts on the first limit switch 5 and the second limit switch 6. The first limit switch 5 and the second limit switch 6 are both automatic reset limit switches. The specific principle is: the contact is moved by the collision of the mechanical moving parts to realize the on-off control. The first limit switch 5 and the second limit switch 6 are described in detail in combination with the circuit connection.

[0060] Reference Figure 1-Figure 5 , the first limit switch 5 and the second limit switch 6 are arranged in parallel. Figure 6In the circuit shown in , 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 a plurality of elastic plug pins 8 to be inserted downward into the socket 103, and then the lifting and pressing member 9 acts downward on the elastic plug pin 8, so that the elastic plug pin 8 changes 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, so that the elastic plug pin 8 returns to the first state, and then the screw adjustment member 11 drives a 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 change process, in conjunction with the plugging and unplugging of the elastic plug pin 8 and the socket 103, the plug-in box 2 and the bus duct 1 need to be clamped and positioned by the limit clamping assembly 3 during the insertion of the elastic plug pin 8 into the socket 103. 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 needs to release the clamping connection between the plug box 2 and the bus duct 1. 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 1, the elastic plug pin 8 has been pulled out from the socket 103, resulting in the problem of overall power failure of the plug box 1.

[0061] The screw adjustment member 11 and the lifting outer frame 7 are described in detail below:

[0062] Reference Figure 8-Figure 13 The lead screw adjustment member 11 includes a servo motor and a lead screw, and the servo motor is arranged on the bottom wall inside the plug 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 lead screw adjustment member 11. The symmetrical design can ensure that the lead screw adjustment member 11 regulates the lifting of the lifting outer frame 7 more stably. The lead screw of the lead screw adjustment member 11 passes through the positioning connection hole 701 and is adapted thereto. The bottom of the lifting outer frame 7 is provided with a plurality of installation notches 702 for the installation of the elastic plug pin 8, which facilitates the installation and setting of the elastic plug pin 8. The detachable installation of the elastic plug pin 8 is realized, and then it can be installed and adapted according to the plug socket 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 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 inside of the plug-in box 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 Figure 8-Figure 13 The elastic plug pin 8 includes 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 side of the two copper bar connecting pieces 82, and a copper piece 84 arranged close to the two spring pieces 83. 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 to achieve conductivity between the copper piece 84 and the copper bar 81. The lower ends of the two spring pieces 83 are inclined toward the copper bar connecting piece 82, and the copper piece 84 is arranged 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 Figure 8-Figure 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 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 column 93 slides through the copper bar 81 to between the two spring sheets 83, that is, the lifting connection column 93 can be driven by the lifting top plate 92 to slide up and down in the copper bar 81. The bottom end of the lifting connection column 93 is fixedly connected with a tightening bottom plate 94, and both ends of the tightening bottom plate 94 are elastically connected with elastic push rods 95 that are against the spring sheet 83. The elastic push rod 95 and the spring sheet 83 The ends that are in contact with each other 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, moves toward the pressing bottom plate 94, and shrinks itself. Therefore, 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, and 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 Figure 1-Figure 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 quickly adjust the clamping of the limit clamping assembly 3, positioning slots 101 for positioning with the limit clamping assembly 3 can be respectively provided on both sides of the plug-in seat 103. After the plug-in box 2 is positioned by the limit clamping assembly 3 and the positioning slots 101, the elastic plug-in pin 8 corresponds to the plug-in seat 103 vertically, 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, so that the connection between the L-shaped rotating rod 31 and the bus duct 1 is 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 hand wheel 45. The rotation of the hand wheel 45 drives the worm 42 to rotate. The rotation of the worm 42 drives the transmission worm wheel 44 and the reversing worm wheel 43 meshed therewith to rotate at the same time. When the reversing worm wheel 43 rotates, it drives the other transmission worm wheel 44 to rotate in the opposite direction, so that the two transmission worm wheels 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 limit 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 tilting to vertical, until they rotate into the positioning card slot 101, and the L-shaped rotating rod 31 remains in a vertical state and fits in the positioning card slot 101, at this time, the elastic protrusion 35 pushes into the positioning hole 102, and the positioning and fixing between the plug-in box 2 and the bus duct 1 is completed;

[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, and then controls the electric push rod 91 of the lifting and tightening member 9 to start to shrink, driving the lifting connection 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 closely with the socket 103, completing the plug-in process;

[0071] When it is necessary to remove the plug-in box 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 card 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 extension of the electric push rod 91 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 sheets 83 until they are out of contact with the spring sheets 83. The two spring sheets 83 are elastically restored and drive the copper sheet 84 to recover. At this time, the tightening force between the copper sheet 84 and the socket 103 becomes weaker, and then the screw adjustment 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-in socket 103, completing the disengagement between the plug-in box 2 and the bus duct 1.

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bus duct plug-in and plug-out device, arranged on a plug-in box body (2) and movably connected to a plug-in socket (103) on a bus duct (1), characterized in that: include: A position limiting clamping assembly (3), the position limiting clamping assembly (3) being arranged on two side surfaces of the plug-in box (2) and being used for positioning the plug-in box (2) and connecting it to the bus duct (1); A manual drive component (4), the manual drive component (4) being mounted on the plug-in box (2) and driving a plurality of limit clamping components (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 two 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 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), wherein the lower end of the elastic plug-in pin is arranged in an inclined manner and has two states, wherein in the first state, the angle between the lower end of the elastic plug-in pin and the vertical axis remains unchanged, and 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) to change the elastic plug-in pin (8) from a first state to a second state; When the limit clamping assembly (3) acts on the first limit switch (5), firstly, the screw adjusting member (11) drives a plurality of elastic plug pins (8) to be inserted downward into the plug socket (103), and then the lifting and tightening member (9) acts downward on the elastic plug pins (8), so that the elastic plug pins (8) 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 arranged inside 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 arranged below the mounting plate (201), and a bottom hole (203) is provided on the bottom surface of the plug-in box (2) for the elastic plug-in pin (8) to pass through.

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 arranged 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); one end of the worm (42) passes through the plug-in box (2) and is coaxially connected to a hand wheel (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: Both sides of the plug-in box (2) are symmetrically penetrated with arc-shaped guide grooves (202). The limit clamping assembly (3) comprises an L-shaped rotating rod (31), a guide connecting column (32) fixed to 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 plug hole (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 upper bottom surface 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 threadedly fixed 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 prism structure, and the outer side of the limiting insertion hole (34) is a circular hole, and the inner side is a prism hole adapted to the prism part 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 body (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 arranged in the sealed space.

7. A 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. A 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), the copper piece (84) and the top of the adjacent spring piece (83) are fixed to 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. A 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 and tightening columns (93) corresponds to the number of the elastic plug pins (8). The lifting and tightening columns (93) slide through the copper bar (81) to between the two spring sheets (83). The bottom end of the lifting and tightening 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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