Power distribution terminal with self-protection function

Abstract

The invention belongs to the technical field of power distribution terminals, and particularly relates to a power distribution terminal with a self-protection function, which comprises a cabinet body, a wire and a terminal main body, a wire clamping assembly is arranged in the cabinet body, the wire clamping assembly comprises a first driver, and the wire clamping assembly is used for clamping a wire and is driven by the first driver to be close to or away from the terminal main body; a charging port is formed in the back face of the terminal body, a plug-in assembly is arranged in the charging port, and the wire can be inserted into the plug-in assembly and electrically connected with the terminal body. According to the invention, the plug-in assembly and the wire clamping assembly can plug and pull out the wire to the terminal main body under the condition that a power supply is not turned off, so that a maintainer can quickly maintain and replace the terminal main body; moreover, under the condition that a power grid line is short-circuited or overloaded, the wire clamping assembly can automatically drive the wire to be pulled out of the plug-in assembly, human intervention is not needed, and the self-protection function of the terminal body is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution terminals, and particularly to a distribution terminal with a self - protection function. Background Art

[0002] With the further improvement of the country's production capacity, the electricity demand in China has also increased accordingly. The traditional distribution network system can no longer meet the in - depth demand of users for high - quality electric energy. For this reason, the concept of distribution automation has emerged. Distribution automation can significantly improve the efficiency of the distribution network, stably provide high - quality electric energy, and reduce operating costs. The realization of distribution automation is inseparable from distribution terminals. As one of the core elements of distribution intelligence, distribution terminals can transmit the collected data to the control center through a communication network to achieve data sharing and centralized processing.

[0003] The existing connection methods of distribution terminals directly to the power grid lines, such as terminal block connection or piercing connection. In terminal block connection, generally, the wires of the power grid line are connected to the terminal block at one end, and then the terminal block at the other end is connected to the corresponding interface of the distribution terminal through wires or cables. This connection method takes more time for repairing or replacing the distribution terminal. While using a special piercing wire clamp, which is clamped on the power grid cable, and the piercing blade inside the wire clamp pierces the cable insulation layer to contact the wire inside the cable, thus realizing the transmission of current. However, the reliability of the piercing connection is relatively low, and problems such as poor contact may occur during long - term operation. In view of this, it is very necessary to propose a reliable and efficient electrical connection method. Summary of the Invention

[0004] Aiming at the above - mentioned defects, the present invention aims to provide a distribution terminal with a self - protection function, including a plug - in component and a wire - clamping component. By using the plug - in component and the wire - clamping component, the wire can be inserted and removed from the terminal body without shutting down the power supply, enabling maintenance personnel to quickly repair and replace the terminal body. Moreover, in the case of a short - circuit or overload of the power grid line, the wire - clamping component will automatically drive the wire to be pulled out from the plug - in component without manual intervention, realizing the self - protection function of the terminal body.

[0005] To achieve the above object, the present invention provides a distribution terminal with a self - protection function, including a cabinet body, a wire, and a terminal main body; an installation opening is provided on the rear end surface inside the cabinet body, which faces the back of the terminal main body and there is a fixed distance between them, and a wire clamping assembly is arranged within this distance; the wire clamping assembly includes a first driver, and the wire clamping assembly is used to clamp the wire and move closer to or away from the terminal main body under the drive of the first driver; a charging port is provided on the back of the terminal main body, and a plug - in assembly is arranged inside the charging port. The plug - in assembly includes a first contact end point, a second contact end point, an end point conductive shell, and a return spring; the return spring connects the inner surface of the charging port and the outer surface of the end point conductive shell. The first contact end point is arranged on the inner top surface of the charging port, and the second contact end point is arranged on the outer surface of the end point conductive shell; the wire can be inserted into the inside of the end point conductive shell; when the return spring is compressed to the maximum extent by the end point conductive shell, the second contact end point directly contacts the first contact end point; when the return spring is in an extended state, the second contact end point does not contact the first contact end point.

[0006] Further, the wire clamping assembly includes an upper clamping plate, a lower clamping plate, two sets of moving components, and a temperature sensor; the two sets of moving components are arranged on the left and right side surfaces inside the cabinet body, the first driver is installed on the moving components and drives the moving components to move; the upper clamping plate and the lower clamping plate are located between the two sets of moving components and clamp the wire; the temperature sensor is also installed on the moving components and transmits a signal to the first driver, and after receiving the signal, the first driver drives the moving components to move away from the terminal main body, and the wire does not contact the end point conductive shell.

[0007] Further, a chuck assembly is arranged around one end of the wire in contact with the end point conductive shell. The chuck assembly includes a front frustum and a rear frustum, and the front frustum and the rear frustum are located at the front and rear ends of the chuck assembly and are in the shape of a frustum; the plug - in assembly further includes an upper baffle, a lower baffle, a plurality of first baffle springs, and a plurality of second baffle springs; the first baffle springs connect the upper baffle and the inner top surface of the charging port, and the second baffle springs connect the lower baffle and the inner bottom surface of the charging port; the upper baffle and the lower baffle can close the charging port and do not contact the end point conductive shell.

[0008] Further, the chuck assembly further includes a spiral plate, a plurality of claws, a plurality of claw chutes, a plurality of connecting plates, and a circular cylinder; the connecting plates are arranged around between the wire and the remaining components of the chuck assembly, one end of which is detachably connected to the front frustum, and the other end is threadedly connected to the spiral plate; the spiral plate is a disc, and a planar thread is provided on one end face of the disc, and the other end face is fixed to the lower bottom surface of the rear frustum; the back of the claw is threadedly connected to the spiral plate, and its front is slidably connected to the claw chute; the circular cylinder is a cylinder with one end closed, and the inner surface of the cylinder end face is provided with a claw chute, and the outer surface of the cylinder end face is fixedly connected to the lower bottom surface of the front frustum.

[0009] Furthermore, a wire coiling assembly is provided inside the installation port, and the wire passes through the wire coiling assembly; when the wire is against the endpoint conductive shell, the wire gradually approaches a straight state inside the wire coiling assembly; when the wire is away from the endpoint conductive shell, the redundant part of the wire is stored inside the wire coiling assembly.

[0010] Furthermore, the wire coiling assembly includes a wire coiling shell and multiple wire coiling components; the wire coiling shell is fixed inside the installation port, and the multiple wire coiling components are all arranged inside the wire coiling shell; the wire coiling components include multiple upper slide tubes, multiple upper slider springs, multiple upper sliding block components, multiple lower slide tubes, multiple lower slider springs, and multiple lower sliding block components; the upper slider spring connects the top surface inside the wire coiling shell and the upper sliding block component, the outer layer of the upper sliding block component is slidably connected with the upper slide tube, and the upper slide tube is fixedly connected to the top surface inside the wire coiling shell; the lower slider spring connects the bottom surface inside the wire coiling shell and the lower sliding block component, the outer layer of the lower sliding block component is slidably connected with the lower slide tube, and the lower slide tube is fixedly connected to the bottom surface inside the wire coiling shell; the multiple upper slide tubes and the multiple lower slide tubes are alternately arranged in sequence, and the multiple upper sliding block components and the multiple lower sliding block components are all abutted against the upper and lower sides of a single wire.

[0011] Furthermore, multiple rows of installation ports are provided on the rear end face of the cabinet, and a lifting plate is slidably connected to its side; the lifting plate is installed with a terminal body and a second driver, and the second driver drives the lifting plate to slide along the vertical direction of the cabinet; when the lifting plate drives the terminal body to slide to the corresponding installation port position, the lifting plate stops sliding.

[0012] Furthermore, two groups of side panel components are arranged on the lifting plate, and the side panel components connect the lifting plate and the top plate. The above four form a frame body, and can be adaptively fixed according to the size change of the terminal body.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. A power distribution terminal with a self-protection function of the present invention can plug and unplug the wires into the terminal body without turning off the power supply through a plug-in assembly and a wire clamping assembly, so that the terminal body can detect the operating data and working conditions of the power grid line conveniently, and at the same time enable maintenance personnel to quickly repair and replace the terminal body; it solves the problem that the maintenance and replacement of the terminal body takes more time due to the bolt fixing of the mobile power distribution terminal and the wires in the past; and, in the event of a short circuit or overload of the power grid line, the wire clamping assembly will automatically drive the wires to be pulled out of the plug-in assembly without human intervention, thereby realizing the self-protection function of the terminal body.

[0015] 2. In a power distribution terminal with a self - protection function according to the present invention, by providing a chuck assembly, an upper baffle and a lower baffle provided at the charging port of the terminal body, while ensuring the convenient insertion and extraction of the wire and the plug - in assembly, the difficulty of dust, impurities and liquid directly entering the interior of the end - point conductive shell is further increased. To a certain extent, it can reduce the corrosion of internal electrical components by the external environment, such as the corrosion of the inner layer of the end - point conductive shell, the first contact end - point and the second contact end - point. Moreover, the chuck assembly can clamp wires of different diameters without the need for adaptability modifications for different wire models.

[0016] 3. In a power distribution terminal with a self - protection function according to the present invention, by providing a wire - coiling assembly, the wires accumulated inside the cabinet are reasonably arranged in the wire - coiling housing, solving the problems that the heat dissipation of internal electrical components in the cabinet is difficult due to the accumulation of wires, accelerating the heat dissipation of the wires, and the accumulation of wires increasing the maintenance difficulty for technicians.

[0017] 4. In a power distribution terminal with a self - protection function according to the present invention, by opening multiple columns of installation ports on the rear end face of the cabinet, the terminal body can be flexibly used to detect different power grid lines, realizing the rational use of resources. At the same time, the adaptability fixation of terminal bodies of different models is completed by using a lifting plate, two groups of side - plate components and a top plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of a power distribution terminal with a self - protection function according to the present invention;

[0019] Figure 2 is a front view of a power distribution terminal with a self - protection function according to the present invention;

[0020] Figure 3 is a left view of a power distribution terminal with a self - protection function according to the present invention without part of the cabinet;

[0021] Figure 4 is Figure 3 the enlarged partial view at the position A shown;

[0022] Figure 5 is a perspective view of the back of the terminal body;

[0023] Figure 6 is a cross - sectional view of the terminal body and the wire - coiling assembly;

[0024] Figure 7 is a partial structural view of the front frustum of the chuck assembly;

[0025] Figure 8 is a partial structural view of the spiral plate and the rear frustum of the chuck assembly.

[0026] Figure 1-8Chinese: 10. Cabinet body; 20. Conducting wire; 30. Terminal body; 101. Installation opening; 110. Wire clamping assembly; 111. Upper clamping plate; 112. Lower clamping plate; 113. Moving part; 211. Spiral plate; 212. Claw; 213. Front frustum; 214. Rear frustum; 215. Claw chute; 216. Connecting plate; 217. Circular tube; 220. Wire coiling assembly; 221. Wire coiling housing; 222. Upper slide tube; 223. Upper slider spring; 224. Upper slider member; 225. Lower slide tube; 226. Lower slider spring; 227. Lower slider member; 231. Lifting plate; 232. Side plate part; 233. Top plate; 234. Lifting chute; 235. Positioning plate; 301. Charging port; 310. Plugging assembly; 311. First contact end point; 312. Second contact end point; 313. End point conductive shell; 314. Return spring; 315. Upper baffle; 316. Lower baffle; 317. First baffle spring; 318. Second baffle spring; Detailed implementation mode

[0027] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is 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 thus should not be construed as a limitation to the present invention.

[0028] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense.

[0029] To make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the drawings.

[0030] Refer to Figures 1 to 8, this embodiment discloses a distribution terminal with a self - protection function, including a cabinet body 10, a wire 20 and a terminal main body 30; an installation opening 101 is provided on the rear end face inside the cabinet body 10, the installation opening 101 faces the back of the terminal main body 30, and there is a fixed distance between the two, and a wire clamping component 110 is arranged within this distance; the wire clamping component 110 includes a first driver, and the wire clamping component 110 is used for clamping the wire 20 and approaching or moving away from the terminal main body 30 under the drive of the first driver; a charging port 301 is provided on the back of the terminal main body 30, and a plug - in component 310 is arranged inside the charging port 301. The plug - in component 310 includes a first contact end point 311, a second contact end point 312, an end - point conductive shell 313 and a return spring 314; the return spring 314 connects the inner surface of the charging port 301 and the outer surface of the end - point conductive shell 313. The first contact end point 311 is arranged on the inner top surface of the charging port 301, and the second contact end point 312 is arranged on the outer surface of the end - point conductive shell 313; the wire 20 can be inserted into the inside of the end - point conductive shell 313; when the return spring 314 is compressed to the maximum extent by the end - point conductive shell 313, the second contact end point 312 directly contacts the first contact end point 311; when the return spring 314 is in the extended state, the second contact end point 312 does not contact the first contact end point 311.

[0031] Furthermore, one end of the wire 20 is electrically connected to the terminal main body 30, and the other end is electrically connected to the power grid line; the number of wires 20 is multiple and they are arranged in a row; a conductive core is exposed at the end of the wire 20 that directly contacts the terminal main body 30, and the conductive core directly contacts the end - point conductive shell 313; the end - point conductive shell 313 is divided into an inner layer and an outer layer. The inner layer is made of a conductive material, and the outer layer is made of an insulating material. The inner layer directly contacts the conductive core, and the outer layer is in sliding contact with the inner surface of the charging port 301; the second contact end point 312 is arranged on the inner layer of the end - point conductive shell 313 and is not covered by the outer insulating material; to avoid possible interference between the installation position of the return spring 314 and the installation positions of the first end point and the second end point, the return spring 314 can be arranged on the rear end face inside the charging port 301. This rear end face faces the opening of the charging port 301, and the elastic force of the return spring 314 is less than the hardness of the wire 20; both the top surface and the bottom surface inside the charging port 301 are inclined surfaces, and the end - point conductive shell 313 is a hollow shell, and its shell shape is the same as the inner shape of the charging port 301.

[0032] When this embodiment is in use, there is a fixed spacing between the conductive core exposed at one end of the wire 20 and the terminal body 30. At this time, the plugging components 310 are all in the initial state, that is, there is a fixed spacing between the first contact end point 311 and the second contact end point 312. The end point conductive shell 313 does not compress the return spring 314, and the return spring 314 is in the unfolded state, and the terminal body 30 is in the power-off state. When the wire 20 abuts against the end point conductive shell 313 under the dragging of the wire clamping component 110, the conductive core exposed at one end of the wire 20 directly contacts the inner layer of the end point conductive shell 313. As the wire clamping component 110 moves towards the terminal body 30, the wire 20 continuously pushes the end point conductive shell 313 towards the inner rear end surface of the charging port 301; under the extrusion of the end point conductive shell 313, the return spring 314 is gradually deformed; the second contact end point 312 gradually approaches the first contact end point 311 until the two are in direct contact; at this time, the current in the power grid line is sequentially conducted through the conductive core exposed by the wire 20 to the inner layer of the end point conductive shell 313, the second contact end point 312, the first contact end point 311, and the terminal body 30, and the terminal body 30 starts to collect the real-time operation data of the power grid line, the operation conditions of the switching equipment, and detect and identify faults. When the wire clamping component 110 moves away from the terminal body 30, the wire 20 clamped by it will be pulled out from the end point conductive shell 313; the end point conductive shell 313 loses the push of the wire 20 and gradually resets under the push of the return spring 314, and the second contact end point 312 and the first contact end point 311 are no longer in contact and maintain a spacing, and the terminal body 30 no longer collects the operation data and conditions of the power grid line. The present invention can insert and remove the wire 20 to the terminal body 30 without turning off the power supply, which is convenient for the terminal body 30 to detect the operation data and conditions of the power grid line, and at the same time enables the maintenance personnel to quickly repair and replace the terminal body 30; it solves the problem that in the past, due to the bolt fixation of the mobile distribution terminal and the wire 20, it took more time to repair and replace the terminal body 30. By setting the top surface and the bottom surface inside the charging port 301, and the planes of the corresponding end point conductive shells 313 as inclined planes, so that the end point conductive shell 313 can be automatically centered in the charging port 301; at the same time, setting the end point conductive shell 313 facilitates the contact between the contact end points and the conductive core exposed by the wire 20; the above settings all improve the insertion and removal efficiency of the wire 20 and the terminal body 30.

[0033] As a further solution of this embodiment: The wire clamping assembly 110 includes an upper clamping plate 111, a lower clamping plate 112, two sets of moving components 113 and a temperature sensor; the two sets of moving components 113 are arranged on the left and right sides inside the cabinet body 10, the first driver is installed on the moving component 113 and drives the moving component 113 to move; the upper clamping plate 111 and the lower clamping plate 112 are located between the two sets of moving components 113 and clamp the wire 20; the temperature sensor is also installed on the moving component 113 and transmits a signal to the first driver, and after receiving the signal, the first driver drives the moving component 113 away from the terminal body 30, and the wire 20 does not contact the end point conductive shell 313.

[0034] Furthermore, the moving component 113 includes a moving block and a moving block slideway; the first driver and the temperature sensor are both installed on the moving block and do not interfere with the normal movement of the rest of the components; the temperature sensor and the first driver are both prior arts, and the first driver can adopt an electromagnetic driver; the moving block is a convex block, and after the convex block rotates 90 degrees to the left or right, it is arranged on the two sides of the cabinet body 10. The relatively narrow parts of the upper half of the convex block are respectively detachably connected to the upper clamping plate 111 and the lower clamping plate 112, and the relatively wide parts of the lower half of the convex block are slidably connected to the side of the cabinet body 10; a flexible body is arranged at the position where the upper clamping plate 111 and the lower clamping plate 112 clamp the wire 20.

[0035] When the wire clamping assembly 110 clamps the wire 20 and plugs it into the terminal body 30, the wire 20 is electrically connected to the terminal body 30. If the temperature at the contact position between the two is too high due to short circuit or overload, etc., the high temperature is sequentially transmitted to the wire 20, the upper clamping plate 111 or the lower clamping plate 112, the moving block, and the temperature sensor through heat conduction. The temperature sensor detects the specific value of the temperature. Once the temperature value exceeds the warning threshold of the temperature sensor, the first driver will receive the signal from the temperature sensor. The first driver drives the moving block away from the terminal body 30 and drives the multiple wires 20 clamped by the upper clamping plate 111 and the lower clamping plate 112 to move away from the terminal body 30 together, disconnecting the electrical connection between the terminal body 30 and the wire 20, thereby avoiding the risk of the terminal body 30 malfunctioning due to this reason and realizing the self-protection function of the terminal body 30; at the same time, using the signal sent by the terminal body 30 to remind the staff to perform maintenance in time. And, the parts of the upper clamping plate 111 and the lower clamping plate 112 that clamp the wire 20 adopt a flexible body, such as rubber, etc., which can minimize the damage to the wire 20 clamped by the upper clamping plate 111 and the lower clamping plate 112. The temperature sensor transmits a signal to the driver, and the first driver drives the moving block to move, which are all prior arts and will not be elaborated here.

[0036] As a further solution of this embodiment: A chuck assembly is disposed around one end of the wire 20 in contact with the end point conductive shell 313. The chuck assembly includes a front frustum 213 and a rear frustum 214. The front frustum 213 and the rear frustum 214 are located at the front and rear ends of the chuck assembly and are in the shape of a frustum. The plug-in assembly 310 further includes an upper baffle 315, a lower baffle 316, a plurality of first baffle springs 317 and a plurality of second baffle springs 318. The first baffle spring 317 connects the upper baffle 315 and the inner top surface of the charging port 301, and the second baffle spring 318 connects the lower baffle 316 and the inner bottom surface of the charging port 301. The upper baffle 315 and the lower baffle 316 can close the charging port 301 and do not contact the end point conductive shell 313.

[0037] Further, on the left and right inner side surfaces near the opening of the charging port 301, baffle chutes are respectively provided. The baffle chutes are parallel to the back surface of the terminal body 30. Both the upper baffle 315 and the lower baffle 316 are slidably connected to the baffle chutes. The chuck assembly does not interfere with the contact between the conductive core of the wire 20 and the inner layer of the end point conductive shell 313.

[0038] By providing the upper baffle 315 and the lower baffle 316 between the end point conductive shell 313 and the back surface of the terminal body 30, when they are closed, they can clamp the wire 20 that has been inserted into the end point conductive shell 313, playing an auxiliary positioning role and further preventing errors in the insertion position of the wire 20. On the other hand, when the terminal body 30 is not plugged with the wire 20, the closing of the upper baffle 315 and the lower baffle 316 can reduce the direct contact between the external environment and the end point conductive shell 313, increasing the difficulty of dust, impurities and liquid directly entering the inside of the end point conductive shell 313, and to a certain extent, reducing the corrosion of the internal electrical components by the external environment. The operation process is as follows: When one end of the wire 20 is dragged by the wire clamping assembly 110 and contacts the closed upper baffle 315 and lower baffle 316, the chuck assembly disposed around the outer layer of the wire 20 can gradually expand the circular holes reserved at the position of the wire 20 by the upper baffle 315 and the lower baffle 316 due to the circular cone shape of the front frustum 213. The upper baffle 315 and the lower baffle 316 start to move along the baffle chutes and compress the first baffle spring 317 and the second baffle spring 318 until the middle part of the chuck assembly passes through the upper baffle 315 and the lower baffle 316. Then, the upper baffle 315 and the lower baffle 316 are gradually closed along the conical surface of the rear frustum 214 under the push of the first baffle spring 317 and the second baffle spring 318. The closed upper baffle 315 and lower baffle 316 can restrict the wire 20 passing through them in the reserved circular holes. Similarly, when the wire clamping assembly 110 drives the wire 20 to be pulled out from the end point conductive shell 313, the conical surface of the rear frustum 214 of the chuck assembly will gradually expand the circular holes reserved by the upper baffle 315 and the lower baffle 316 and repeat the above operation.

[0039] As a further solution of this embodiment: The chuck assembly further includes a spiral plate 211, a plurality of jaws 212, a plurality of jaw chutes 212, a plurality of connecting plates 216, and a circular cylinder 217; The connecting plates 216 are arranged around between the wire 20 and the remaining components of the chuck assembly. One end of the connecting plate 216 is detachably connected to the front frustum 213, and the other end is threadedly connected to the spiral plate 211; The spiral plate 211 is a disc, and a planar thread is provided on one end face of the disc, and the other end face is fixed to the lower bottom surface of the rear frustum 214; The back of the jaw 212 is threadedly connected to the spiral plate 211, and its front is slidably connected to the jaw chute 212; The circular cylinder 217 is a cylinder with one end closed. The inner surface of the cylinder end face is provided with a jaw chute 212, and the outer surface of the cylinder end face is fixedly connected to the lower bottom surface of the front frustum 213.

[0040] Further, the front frustum 213, the rear frustum 214, and the spiral plate 211 disposed around the outer layer of the wire 20 all include through holes, and the diameter of the through holes is greater than the diameter of the wire 20; A plurality of connecting plates 216 are all located inside the through holes and are arranged staggeredly with the jaw chutes 212. The number of the connecting plates 216 is three; One end of the plurality of connecting plates 216 provided with threads has a long enough thread length to satisfy that after the spiral plate 211 rotates around the connecting plate 216, the jaws 212 can clamp or move away from the wire 20 along the jaw chutes 212; The jaws 212 and the jaw chutes 212 correspond one by one, and the number of both is three.

[0041] The purpose of setting the spiral plate 211, the jaws 212, and the jaw chutes 212 is to enable the chuck assembly to clamp wires 20 with different diameters without the need for adaptability modifications for different models of wires 20. The specific operation process is as follows: First, install the jaws 212 into the initial positions inside the jaw chutes 212 in sequence, that is, each jaw 212 is located close to the inner cylindrical surface of the circular cylinder 217. Through the cooperation of the internal thread at the through hole of the spiral plate 211 and the external thread of the connecting plate 216, rotate the spiral plate 211 around the connecting plate 216, so that the side of the spiral plate 211 provided with the planar thread gradually approaches the back of the jaw 212 provided with the thread until the two form a threaded connection; At this time, continue to rotate the spiral plate 211 around the external thread of the connecting plate 216, and the planar thread of the spiral plate 211 will also rotate together. The rotation of the planar thread will drive the jaws 212 to move along the jaw chutes 212 and gradually approach the wire 20 until the jaws 212 finally clamp the wire 20, and the chuck assembly completes the clamping of the exposed conductive core at one end of the wire 20. When it is necessary to remove the chuck assembly from the wire 20, the operation process is opposite to the above operation process.

[0042] As a further solution of this embodiment: A wire coiling assembly 220 is arranged inside the installation port 101, and the wire 20 passes through the wire coiling assembly 220; when the wire 20 abuts against the end conductive shell 313, the wire 20 gradually approaches a straight state inside the wire coiling assembly 220; when the wire 20 is away from the end conductive shell 313, the redundant part of the wire 20 is stored inside the wire coiling assembly 220.

[0043] As a further solution of this embodiment: The wire coiling assembly 220 includes a wire coiling housing 221 and a plurality of wire coiling components; the wire coiling housing 221 is fixed inside the installation port 101, and a plurality of wire coiling components are arranged inside the wire coiling housing 221; the wire coiling components include a plurality of upper slide cylinders 222, a plurality of upper slider springs 223, a plurality of upper sliding block members 224, a plurality of lower slide cylinders 225, a plurality of lower slider springs 226, and a plurality of lower sliding block members 227; the upper slider spring 223 connects the inner top surface of the wire coiling housing 221 and the upper sliding block member 224, the outer layer of the upper sliding block member 224 is slidably connected with the upper slide cylinder 222, and the upper slide cylinder 222 is fixedly connected to the inner top surface of the wire coiling housing 221; the lower slider spring 226 connects the inner bottom surface of the wire coiling housing 221 and the lower sliding block member 227, the outer layer of the lower sliding block member 227 is slidably connected with the lower slide cylinder 225, and the lower slide cylinder 225 is fixedly connected to the inner bottom surface of the wire coiling housing 221; the plurality of upper slide cylinders 222 and the plurality of lower slide cylinders 225 are arranged alternately in sequence, and the plurality of upper sliding block members 224 and the plurality of lower sliding block members 227 are both abutted against the upper and lower sides of a single wire 20.

[0044] Further, the wire coiling housing 221 is a cuboid, the inside of the cuboid is hollow, two faces of the cuboid are parallel to the back surface of the terminal body 30, the face of the cuboid close to the back surface is the inner side surface, and a wire 20 outlet hole is opened on the inner side surface; the face of the cuboid away from the back surface is the outer side surface, and a wire 20 inlet hole is opened on the outer side surface; the inner side surface and the outer side surface are detachably connected to the remaining surfaces of the wire coiling housing 221; the upper sliding block member 224 includes the same number of upper sliding blocks and upper rolling wheels, one end of the upper sliding block is connected to the upper slider spring 223, and the other end is rotatably connected with a single upper rolling wheel, and the upper sliding block extends out of the upper slide cylinder 222; the lower sliding block member 227 includes the same number of lower sliding blocks and lower rolling wheels, one end of the lower sliding block is connected to the lower slider spring 226, and the other end is rotatably connected with a single lower rolling wheel, and the lower sliding block extends out of the lower slide cylinder 225; a single wire 20 sequentially passes through the wire 20 inlet hole, the upper rolling wheel, the lower rolling wheel, and the wire 20 outlet hole, and the upper rolling wheel and the lower rolling wheel are both abutted against both sides of the wire 20; the rolling surface of the rolling wheel in contact with the wire 20 is an inner concave curved surface.

[0045] To achieve the plugging and unplugging actions of the wire 20 with respect to the plugging and connecting component 310, the length of the wire 20 should satisfy the moving stroke of the wire clamping component 110. This will inevitably cause the excess wire 20 to accumulate inside the cabinet body 10 when the wire 20 retracts. The accumulated wire 20 is not conducive to the heat dissipation of the electrical components inside the cabinet body 10. At the same time, the accumulated wire 20 will also increase the maintenance difficulty for technicians. To solve the above problems, the present invention provides a wire coiling component 220 to dynamically adjust the excess length of the wire 20 after retraction. The specific operation process is as follows: When the wire 20 is dragged by the wire clamping component 110 and abuts against the end point conductive shell 313, the redundant part of the wire 20 inside the wire coiling component 220 is gradually straightened by the wire clamping component 110. At this time, the upper rolling wheel and the lower rolling wheel in direct contact with the wire 20 are squeezed by the straightened wire 20. The squeezed upper rolling wheel pushes the upper sliding block to slide inside the upper slide barrel 222, and the upper sliding block compresses the upper slide block spring 223, resulting in the gradually shorter protruding distance of the upper sliding block from the upper slide barrel 222. Similarly, the squeezed lower rolling wheel also undergoes the same movement process. When the wire 20 is dragged by the wire clamping component 110 and moves away from the end point conductive shell 313, the retracted wire 20 gradually reduces the extrusion on the upper rolling wheel and the lower rolling wheel. The pushing force of the upper rolling wheel on the upper sliding block decreases, and the pressure of the upper sliding block on the upper slide block spring 223 weakens. The upper slide block spring 223 begins to push the upper sliding block to move, and the protruding distance of the upper sliding block from the upper slide barrel 222 gradually increases. Similarly, the lower rolling wheel also undergoes the same movement process. The redundant wire 20 is abutted by the upper rolling wheel and the lower rolling wheel and is evenly re-accommodated in the wire coiling housing 221, solving the problem of wire 20 accumulation inside the cabinet body 10. At the same time, the heat of the wire 20 can be transferred to the cabinet body 10 through the wire coiling component 220 by heat conduction, accelerating the heat dissipation of the wire 20, and the wire 20 will not affect the heat dissipation of the electrical components inside the cabinet body 10. Moreover, the upper rolling wheel and the lower rolling wheel are provided, and the rolling surfaces of the two are set as concave surfaces. On the one hand, it is to avoid excessive local pressure when the wire coiling component squeezes the wire 20, and on the other hand, it changes the contact between the wire coiling component and the wire 20 from sliding contact to rolling contact, reducing the wear on the surface layer of the wire 20 by the wire coiling component.

[0046] As a further solution of this embodiment: A plurality of columns of mounting openings 101 are provided on the rear end surface of the cabinet body 10, and a lifting plate 231 is slidably connected to its side; The lifting plate 231 is provided with a terminal body 30 and a second driver, and the second driver drives the lifting plate 231 to slide along the vertical direction of the cabinet body 10; When the lifting plate 231 drives the terminal body 30 to slide to the position corresponding to the mounting opening 101, the lifting plate 231 stops sliding.

[0047] Furthermore, there are two columns of installation openings 101, and the settings in each installation opening 101 are the same; both the left and right side surfaces of the cabinet body 10 are stepped surfaces, and the stepped surface includes a first stepped surface and a second stepped surface; a sliding groove is provided on the first stepped surface for installing a moving block; a lifting sliding groove 234 is provided on the second stepped surface, and a positioning plate 235 is provided inside the lifting sliding groove 234 at a position corresponding to the installation opening 101; there is a fixed distance between the lifting plate 231 and the rear end surface inside the cabinet body 10, and it does not interfere with the normal operation of the wire clamping assembly 110; the second driver can adopt an electromagnetic driver.

[0048] By providing multiple columns of installation openings 101, the terminal body 30 can be flexibly used to detect different power grid lines, achieving reasonable use of resources. The specific operation is as follows: Fix the terminal body 30 on the lifting plate 231. The lifting plate 231 and the installation opening 101 are in the same column. Drive the lifting plate 231 to move along the lifting sliding groove 234 through the second driver. The moving lifting plate 231 can accurately find the installation opening 101 that needs it without disassembling the terminal body 30 on the lifting plate 231. After reaching the specified position, the second driver stops driving the lifting plate 231. At this time, install the positioning plate 235 into the lifting sliding groove 234, and the lifting plate 231 stops moving under the restriction of the positioning plate 235. For example, use the terminal body 30 to detect the power grid lines of an office building or a government agency. The detection time is mainly concentrated during the day. Since there is almost no electricity consumption in the office building after midnight every day, the power supply of this group of power grid lines can be stopped, and the terminal body 30 does not need to detect this group of power grid lines anymore. The terminal body 30 is disconnected from the wire 20 in this installation opening 101; at this time, this terminal body 30 can be used to detect the power grid lines with high electricity consumption at night, such as the street lamp power supply system, that is, move the terminal body 30 along the lifting sliding groove 234 to the corresponding installation opening 101.

[0049] As a further solution of this embodiment: Two sets of side plate components 232 are provided on the lifting plate 231. The side plate components 232 connect the lifting plate 231 and the top plate 233, and the above four form a frame body, and can be adaptively fixed according to the size change of the terminal body 30.

[0050] Further, the lifting plate 231 is an L-shaped plate, and the side of the L-shaped plate is slidably connected to the lifting chute 234, and the bottom edge is used to place the terminal body 30; the top plate 233 is a rectangular plate, and limiting grooves are provided at the middle parts of the bottom edge of the lifting plate 231 and the top plate 233, and the provided limiting grooves are all parallel to the length direction of the used plate; the side plate component 232 includes a sliding rod and a side plate, the sliding rod is a slender round rod, and the side plate is also a rectangular plate; the sliding rod is fixed to the middle of the side plate, is parallel to the length direction of the side plate, and extends out from both ends of the side plate; the length of the sliding rod exceeds the height of the terminal body 30, the length of the side plate is less than the height of the terminal body 30, and a clearance fit is adopted between the extending part of the sliding rod from the side plate and the limiting groove; the two groups of side plate components 232, the lifting plate 231 and the top plate 233 are all connected by threads, that is, external threads are provided on the extending part of the sliding rod from the side plate and are threadedly connected to the nuts.

[0051] The specific operation is as follows: Place the terminal body 30 on the bottom edge of the lifting plate 231, place two groups of side plate components 232 in the limiting grooves at the bottom edge of the lifting plate 231, slide the side plate components 232 in the limiting grooves so that the side plate components 232 are close to the left and right sides of the terminal body 30, and at this time, tighten the nuts at the threaded connection between the side plate components 232 and the lifting plate 231, and the nuts and the side plates will clamp the bottom edge of the lifting plate 231; then, slide the top plate 233 along the extending part of the sliding rod to the top surface of the terminal body 30, and tighten the nuts at the threaded connection between the side plate components 232 and the top plate 233, and the nuts and the top surface of the terminal body 30 will clamp the top plate 233, thereby completing the fastening of the terminal body 30, and there is no need to perform an adaptability design according to the change of the terminal body 30 model.

Claims

1. A power distribution terminal with a self-protection function, comprising a cabinet (10), a conductor (20) and a terminal body (30); characterized in that: The cabinet (10) has an installation opening (101) on the rear end surface thereof, the installation opening (101) facing the back side of the terminal body (30), and there is a fixed spacing between the two, within which a wire clamping assembly (110) is arranged; the wire clamping assembly (110) comprises a first driver, the wire clamping assembly (110) is used to clamp the wire (20), and is driven by the first driver to move closer to or away from the terminal body (30); the terminal body (30) has a charging port (301) on the back side thereof, a plug-in assembly (310) is arranged in the charging port (301), and the plug-in assembly (310) comprises a first electric contact terminal (311), a second electric contact terminal (312), a terminal conductive shell (313) and a reset spring ( 314); the return spring (314) is connected to the inner surface of the charging port (301) and the outer surface of the terminal conductive shell (313); the first electric contact terminal (311) is arranged on the top surface inside the charging port (301), and the second electric contact terminal (312) is arranged on the outer surface of the terminal conductive shell (313); the wire (20) can be inserted into the terminal conductive shell (313); when the return spring (314) is compressed to the maximum extent by the terminal conductive shell (313), the second electric contact terminal (312) directly contacts the first electric contact terminal (311); when the return spring (314) is in an extended state, the second electric contact terminal (312) does not contact the first electric contact terminal (311).

2. A power distribution terminal with self-protection function according to claim 1, characterized in that: The wire clamping assembly (110) further comprises an upper clamping plate (111), a lower clamping plate (112), two groups of moving parts (113) and a temperature sensor; the two groups of moving parts (113) are arranged on the left and right sides inside the cabinet (10); the first driver is installed on the moving parts (113) and drives the moving parts (113) to move; the upper clamping plate (111) and the lower clamping plate (112) are located between the two groups of moving parts (113) and clamp the wire (20); the temperature sensor is also installed on the moving part (113) and transmits a signal to the first driver; after receiving the signal, the first driver drives the moving part (113) away from the terminal body (30), and the wire (20) does not contact the terminal conductive shell (313).

3. A power distribution terminal with self-protection function according to claim 2, characterized in that: A clamp assembly is arranged around one end of the wire (20) that contacts the endpoint conductive shell (313), and the clamp assembly includes a front frustum (213) and a rear frustum (214), wherein the front frustum (213) and the rear frustum (214) are located at the front and rear ends of the clamp assembly and are frustum-shaped; the plug assembly (310) also includes an upper baffle (315), a lower baffle (316), a plurality of first baffle springs (317) and a plurality of second baffle springs (318); the first baffle spring (317) connects the upper baffle (315) and the internal top surface of the charging port (301), and the second baffle spring (318) connects the lower baffle (316) and the internal bottom surface of the charging port (301); the upper baffle (315) and the lower baffle (316) are capable of closing the charging port (301) and do not contact the endpoint conductive shell (313).

4. A power distribution terminal with self-protection function according to claim 3, characterized in that: The chuck assembly further comprises a spiral plate (211), a plurality of claws (212), a plurality of claw slide grooves (215), a plurality of connecting plates (216) and an annular tube (217); the connecting plate (216) is disposed around the wire (20) and the remaining components of the chuck assembly, one end of which is detachably connected to the front truncated platform (213), and the other end is threadedly connected to the spiral plate (211); the spiral plate (211) is a circular disk, one end face of which is provided with a flat thread, and the other end face is fixed to the lower bottom face of the rear truncated platform (214); the back face of the claw (212) is threadedly connected to the spiral plate (211), and the front face of the claw is slidably connected to the claw slide groove (215); the annular tube (217) is a cylinder with one end closed, the inner surface of the end face of the cylinder is provided with the claw slide groove (215), and the outer surface of the end face of the cylinder is fixedly connected to the lower bottom face of the front truncated platform (213).

5. A power distribution terminal with self-protection function according to claim 4, characterized in that: A wire coiling assembly (220) is arranged inside the installation opening (101), and the wire (20) passes through the wire coiling assembly (220); when the wire (20) abuts against the endpoint conductive shell (313), the wire (20) gradually approaches a straight state inside the wire coiling assembly (220); when the wire (20) is away from the endpoint conductive shell (313), the redundant part of the wire (20) is stored inside the wire coiling assembly (220).

6. A power distribution terminal with self-protection function according to claim 5, characterized in that: The wire coiling assembly (220) comprises a wire coiling shell (221) and a plurality of wire coiling components; the wire coiling shell (221) is fixed inside the installation port (101), and the plurality of wire coiling components are arranged inside the wire coiling shell (221); the wire coiling components comprise a plurality of upper slideway cylinders (222), a plurality of upper slider springs (223), a plurality of upper sliding block components (224), a plurality of lower slideway cylinders (225), a plurality of lower slider springs (226), and a plurality of lower sliding block components (227); the upper slider spring (223) is connected to the inner top surface of the wire coiling shell (221) and the upper sliding block component (224), and the outer layer of the upper sliding block component (224) is slidably connected to the upper slideway cylinder (222), the upper slider spring (223) is connected to the inner top surface of the wire coiling shell (221), and the upper sliding block component (224) is slidably connected to the upper slideway cylinder (225), the upper slider spring (226) is connected to the upper slide block component (224), and the upper slide block component (224) is connected to the upper slideway cylinder (225). A slideway tube (222), wherein the upper slideway tube (222) is fixedly connected to the internal top surface of the wire coiling shell (221); the lower slider spring (226) is connected to the internal bottom surface of the wire coiling shell (221) and the lower sliding block component (227); the outer layer of the lower sliding block component (227) is slidably connected to the lower slideway tube (225), and the lower slideway tube (225) is fixedly connected to the internal bottom surface of the wire coiling shell (221); a plurality of the upper slideway tubes (222) and a plurality of the lower slideway tubes (225) are arranged alternately in sequence, and a plurality of the upper sliding block components (224) and a plurality of the lower sliding block components (227) are all in contact with the upper and lower sides of a single wire (20).

7. A power distribution terminal with self-protection function according to claim 6, characterized in that: The rear end surface of the cabinet (10) is provided with a plurality of rows of the installation openings (101), and a lifting plate (231) is slidably connected to the side surface thereof; the lifting plate (231) is installed with the terminal body (30) and a second driver, and the second driver drives the lifting plate (231) to slide along the vertical direction of the cabinet (10); when the lifting plate (231) drives the terminal body (30) to slide to the position of the corresponding installation opening (101), the lifting plate (231) stops sliding.

8. A power distribution terminal with self-protection function according to claim 7, characterized in that: The lifting plate (231) is provided with two groups of side plate components (232), and the side plate components (232) are connected to the lifting plate (231) and the top plate (233). The above four form a frame and can be adaptively fixed according to the size change of the terminal body (30).

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