A plug-in copper-aluminum wind power connector assembly and a connector

Abstract

The application discloses a plug-in copper-aluminum wind power connector assembly and a connector, relates to the technical field of electrical connection of wind power equipment, and discloses a male plug-in assembly and a female seat fixed assembly; the female seat fixed assembly is arranged on one side of the outer wall of the male plug-in assembly; the male plug-in assembly comprises three wedge-shaped driving blocks, a micro eccentric pendulum and a hard locking pin; the three wedge-shaped driving blocks are designed with double inclined surfaces, the angle of the outer inclined surface is 30 degrees, the angle of the inner inclined surface is 15 degrees, the three wedge-shaped driving blocks are used for double-wedge progressive locking, and a memory alloy temperature sensing pad is embedded on one side of the outer wall of the three wedge-shaped driving blocks; the male plug-in assembly and the female seat fixed assembly are cooperatively linked to accurately solve the core defects of unstable contact, insufficient anti-vibration protection, poor environmental adaptation and weak installation compatibility of traditional copper-aluminum wind power connectors, and meet the requirements of low contact resistance, high anti-vibration property, strong environmental adaptability and long service life in the wind power field.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electrical connection of wind power equipment, in particular to a plug-in copper-aluminum wind power connector assembly and a connector. BACKGROUND

[0002] The plug-in copper-aluminum wind power connector assembly is a core connecting component of a wind turbine generator system power transmission system, and bears the functions of current transmission and signal interaction between a nacelle power generation unit and a converter, and between the converter and a tower base power distribution system. The connection reliability directly determines the operation stability, power generation efficiency and safety protection level of the wind power equipment.

[0003] The core contradiction of the plug-in copper-aluminum wind power connector assembly is that the wind power field has rigid requirements for low contact resistance, high vibration resistance, strong environmental adaptability and long service life of the heterogeneous conductor connection, which is in fundamental conflict with the instability of traditional copper-aluminum connector contact, the deficiency of vibration protection and poor adaptability. The traditional scheme relies on a single contact structure, a separate locking unit and a rough sealing design, which is difficult to adapt to the needs of dense wind power equipment components, variable working conditions and flexible adaptation of different specifications of wind turbines, resulting in two defects in the prior art. First, the copper-aluminum contact stability and vibration resistance are insufficient, which can easily cause safety hazards. The traditional copper-aluminum direct compression or simple plating structure is prone to electrochemical corrosion in the humid and salt spray environment of wind power, generating a high-resistance oxide layer to cause a sharp increase in contact resistance. The single buckle and threaded locking structure cannot withstand wideband vibration, resulting in locking fatigue and male and female end loosening. Vibration aggravates the wear and tear of the contact surface, forming a vicious cycle, and eventually leading to power failure, overheating and other faults. The lack of precise guide structure also causes misalignment of the connection, further aggravating the problem of uneven contact wear and current distribution. Second, the harsh environment adaptation and installation compatibility are insufficient, resulting in protection failure and assembly difficulty. The traditional single O-ring sealing design is prone to aging and leakage under the high and low temperature, salt spray and ultraviolet conditions of wind power, causing component corrosion or short circuit. The ordinary insulating shell has poor weather resistance and cannot guarantee long-term insulation protection. The simple bolt fixing structure has a small bonding area and is prone to displacement under vibration. It is difficult to adapt to the installation of different specifications of wind power equipment. Part of the electronic detection protection system fails under power failure conditions and needs to be reset manually, which can easily cause secondary faults in unattended wind power fields. In summary, the existing product cannot meet the core needs of high reliability, high vibration resistance, strong protection and long service life in the wind power field. Therefore, it is an urgent need to develop a copper-aluminum connector assembly that adapts to the complex working conditions of wind power.

[0004] Therefore, we propose a plug-in copper-aluminum wind power connector assembly and a connector to solve the problems mentioned above. SUMMARY

[0005] The application aims to provide a plug-in copper-aluminum wind power connector assembly and a connector, which can solve the core defects of unstable contact, insufficient anti-vibration protection, poor environmental adaptation and weak installation compatibility of traditional copper-aluminum wind power connectors, and meet the needs of low contact resistance, high anti-vibration, strong environmental adaptability and long service life in the field of wind power.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a plug-in copper-aluminum wind power connector assembly, a male plug-in assembly and a female fixed assembly, the female fixed assembly is arranged on one side of the outer wall of the male plug-in assembly;

[0007] The male plug-in assembly comprises three wedge-shaped driving blocks, a micro eccentric pendulum and a hard locking pin, the three wedge-shaped driving blocks are designed with double inclined surfaces, the outer inclined surface has an angle of 30 degrees, and the inner inclined surface has an angle of 15 degrees, the three wedge-shaped driving blocks are used for double-wedge progressive locking, a memory alloy temperature sensing pad is embedded on one side of the outer wall of each of the three wedge-shaped driving blocks, and the three memory alloy temperature sensing pads are used for compensating pressure attenuation caused by thermal expansion when the temperature is high, the micro eccentric pendulum is used for accurately sensing wideband vibration and dragging the hard locking pin to convert the vibration signal into mechanical unlocking power, and the hard locking pin is used for ultimate anti-loosening in a vibration working condition, and a plurality of meshing tooth grooves are formed in one end of the outer wall of the hard locking pin.

[0008] The female fixed assembly comprises three double-wedge guide rail grooves and an anti-loosening gear ring, the outer groove of the three double-wedge guide rail grooves has a wedge angle of 30 degrees, and the inner groove has a wedge angle of 15 degrees, the outer groove of the three double-wedge guide rail grooves is used for quickly correcting plug-in deviation, and the inner groove is used for realizing quick radial holding force, a plurality of micro tooth grooves are annularly distributed on the inner ring of the anti-loosening gear ring, and the micro tooth grooves of the anti-loosening gear ring are used for accurately aligning with and meshing with the meshing tooth grooves of the hard locking pin.

[0009] Preferably, the male plug-in assembly further comprises a male insulating shell, an annular guide rail groove is formed in the outer surface of the male insulating shell, an operating ring is rotatably connected to the inner surface of the annular guide rail groove through an annular protrusion, one side of the outer wall of the operating ring is fixedly connected to the opposite side of the three wedge-shaped driving blocks, an annular boss and a mounting base are respectively connected to the inner surface of the operating ring, and a plurality of pin needles are inserted between the through holes of the annular boss and the mounting base.

[0010] Preferably, the outer surface of each pin is sleeved with a metal compensating bellows, and each metal compensating bellows is used for compensating the axial and radial displacement of the pin caused by temperature change and fan vibration, the outer wall of each metal compensating bellows is fixedly connected with the opposite side of the annular boss and the mounting base, respectively, the outer surface of each pin is sleeved with an insulating positioning bushing, and each insulating positioning bushing is used for preventing short circuit and buffering the radial vibration of the corresponding pin, the outer surface of each insulating positioning bushing is connected with the inner surface of the corresponding through hole of the mounting base, and the outer surface of each pin is sleeved with a spring fixing ring, and the outer wall of each spring fixing ring is annularly arranged with a group of contact springs at one end.

[0011] Preferably, the inner part of the operating ring is provided with a mounting groove, the inner wall of the operating ring is boltedly connected with a support on both sides, the opposite sides of the two supports are connected with a rotating shaft, the outer surface of the rotating shaft is rotatably connected with the inner surface of the micro eccentric pendulum, the outer wall of the micro eccentric pendulum is integrally formed with a lug on one side, the lug is hung with a torsion spring, one end of the outer wall of the torsion spring is hung in the hanging hole of one of the supports, and the torsion spring is sleeved on the outer surface of the rotating shaft.

[0012] Preferably, the outer wall of the micro eccentric pendulum is fixedly connected with a hook on one side, the outer surfaces of the two supports are boltedly connected with a connecting piece, the outer wall of the connecting piece is symmetrically connected with a micro spring on one side, and the outer walls of the two micro springs are connected with a limiting plate at one end.

[0013] Preferably, the outer wall of the mounting groove is penetrated by a pin hole, the inner surfaces of the pin holes are connected with a sealing ring, the inner surface of the sealing ring is connected with the outer surface of the hard locking pin in clearance fit, the outer wall of the hard locking pin is elastically connected with an energy storage compression spring at one end, the outer wall of the energy storage compression spring is connected with a check ring at one end, the outer wall of the check ring is connected with the inner wall of the mounting groove on one side, and the outer wall of the hard locking pin is fixedly connected with a connecting rod.

[0014] Preferably, the outer wall of the connecting rod is integrally formed with a horizontal plate at one end, the outer wall of the check ring is symmetrically provided with a sliding groove on one side, the inner surfaces of the sliding grooves are slidably connected with a sliding plate, the outer surfaces of the two sliding plates are boltedly connected with a frame, and the outer surfaces of the frame are connected with a metal elastic wire.

[0015] Preferably, the female seat fixing assembly further comprises a female seat insulating shell, the outer wall of the female seat insulating shell is fixedly connected with a mounting flange at one end, the outer wall of the female seat insulating shell is embedded with an O-ring at the other end, and three double-wedge guide rail grooves are formed in the outer wall of the female seat insulating shell on one side.

[0016] Preferably, the inner surface of the female seat insulating shell is connected with an insulating base, one side of the outer wall of the insulating base is penetrated by a plurality of insertion holes, the inner surfaces of the plurality of insertion holes are all connected with elastic sheet positioning insulating bases, a group of elastic sheets are annularly arranged between the inner surfaces of the plurality of insertion holes, and a circular hole is formed in one side of the outer wall of the female seat insulating shell, and the inner surface of the circular hole is connected with the outer surface of the anti-loosening tooth ring.

[0017] The application also provides a connector comprising the plug-in copper-aluminum wind power connector assembly.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] In the application, the male plug-in assembly and the female seat fixing assembly are cooperatively linked to accurately solve the core defects of the traditional copper-aluminum wind power connector, such as unstable contact, insufficient anti-vibration protection, poor environmental adaptation, and weak installation compatibility, and fully meet the requirements of low contact resistance, high anti-vibration, strong environmental adaptability, and long service life in the wind power field; the integrated design of the micro eccentric pendulum and the hard locking pin of the male plug-in assembly realizes vibration-triggered automatic locking and anti-loosening, can resist wideband vibration, and avoids locking fatigue and loosening; the cooperation of the wedge-shaped driving block and the double-wedge guide rail groove solves the problem of docking deflection, improves the assembly efficiency and the service life of the components, and the mechanical linkage type signal acquisition design can realize fault early warning without additional power supply and is suitable for unattended wind power plants; the female seat fixing assembly realizes hierarchical guidance and holding through the double-wedge guide rail groove, ensuring the coaxiality of the male and female ends; the composite structure of the insulating positioning bushing and the contact spring breaks the copper-aluminum electrochemical corrosion, compensates the vibration and thermal expansion gap, and ensures the stability of the contact resistance; the integrated design of multiple seals and installation flanges can adapt to harsh working conditions and improve the installation compatibility, and is suitable for different specifications of wind power equipment; the two assemblies cooperatively form a reliable closed loop of docking, locking, protection, and operation, significantly improve the connection reliability and service life, and fully meet the batch application requirements in the wind power field. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structure perspective view of the plug-in copper-aluminum wind power connector assembly of the application;

[0021] Figure 2 It is an installation position structure schematic view of the male plug-in assembly and the female seat fixing assembly of the plug-in copper-aluminum wind power connector assembly of the application;

[0022] Figure 3 It is an installation position structure schematic view of the male plug-in assembly of the plug-in copper-aluminum wind power connector assembly of the application;

[0023] Figure 4 It is an installation position structure schematic view of the annular boss and the installation base of the plug-in copper-aluminum wind power connector assembly of the application;

[0024] Figure 5 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0025] Figure 6 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0026] Figure 7 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0027] Figure 8 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0028] Figure 9 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0029] Figure 10 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0030] Figure 11 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0031] Figure 12 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application;

[0032] Figure 13 The installation position structure schematic diagram of the metal compensation bellows, the spring fixing ring and the contact spring of the insulating positioning bushing in the plug-in copper-aluminum wind power connector assembly of the application; Figure 12 The structure enlarged view of A in the plug-in copper-aluminum wind power connector assembly of the application;

[0033] In the diagram: 100, Male connector plug-in assembly; 101, Male connector insulating housing; 102, Annular guide rail groove; 103, Operating ring; 104, Wedge-shaped drive block; 105, Memory alloy temperature-sensitive pad; 106, Annular boss; 107, Mounting base; 108, Pin; 109, Insulating positioning bushing; 110, Metal compensating bellows; 111, Spring retaining ring; 112, Contact spring; 113, Mounting groove; 114, Bracket; 115, Rotating shaft; 116, Miniature eccentric pendulum; 117, Hanging lug; 118, Torsion spring; 119, Hook; 120, Connection Components; 121. Miniature spring; 122. Limiting plate; 123. Pin hole; 124. Hard locking pin; 125. Sealing ring; 126. Energy storage compression spring; 127. Retaining ring; 128. Connecting rod; 129. Horizontal plate; 130. Slide plate; 131. Frame; 132. Metal elastic wire; 200. Female seat fixing assembly; 201. Female seat insulating shell; 202. Mounting flange; 203. O-ring; 204. Double wedge guide rail groove; 205. Insulating base; 206. Insertion hole; 207. Spring piece positioning insulating seat; 208. Elastic spring piece; 209. Anti-loosening toothed ring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1-2 As shown, this embodiment discloses a pluggable copper-aluminum wind power connector assembly, including a male pluggable assembly 100 and a female fixing assembly 200, with the female fixing assembly 200 installed on one side of the outer wall of the male pluggable assembly 100.

[0036] like Figure 3 as well as Figure 8 As shown, the male plug-in assembly 100 includes three wedge-shaped drive blocks 104, a miniature eccentric pendulum 116, and a hard locking pin 124. The three wedge-shaped drive blocks 104 adopt a double-sloped design, with the outer slope angle being 30 degrees and the inner slope angle being 15 degrees. The three wedge-shaped drive blocks 104 are used for double-wedge progressive locking. A memory alloy temperature-sensing pad 105 is embedded on one side of the outer wall of each of the three wedge-shaped drive blocks 104. The three memory alloy temperature-sensing pads 105 are used to compensate for the pressure attenuation caused by thermal expansion during phase change expansion at high temperatures. The miniature eccentric pendulum 116 is used to accurately sense wideband vibration and pull the hard locking pin 124 to convert the vibration signal into mechanical unlocking power. The hard locking pin 124 is used for ultimate anti-loosening under vibration conditions, and multiple meshing tooth grooves are opened on one end of the outer wall of the hard locking pin 124.

[0037] As shown in Figures 12-13 The female seat fixing assembly 200 includes three double-wedge guide rail grooves 204 and a lock ring 209. The outer grooves of the three double-wedge guide rail grooves 204 are thirty-degree wedge angles, and the inner grooves are fifteen-degree wedge angles. The outer grooves of the three double-wedge guide rail grooves 204 are used for quick correction of plugging deviation, and the inner grooves are used to achieve quick radial holding force. The inner ring of the lock ring 209 is annularly distributed with a plurality of small tooth grooves, and the small tooth grooves of the lock ring 209 are used for precise alignment and engagement with the meshing tooth grooves of the hard locking pin 124.

[0038] The core contradiction of the plug-in copper-aluminum wind power connector assembly in this embodiment is the rigid demand of the wind power field for heterogeneous conductor connection with low contact resistance, high vibration resistance, strong environmental adaptability, and long service life, which is in fundamental conflict with the instability of traditional copper-aluminum connector contact, insufficient vibration protection, and poor adaptability. The traditional scheme relies on a single contact structure, a separate locking unit, and a extensive sealing design, which is difficult to adapt to the needs of dense wind power equipment elements, variable working conditions, and flexible adaptation of different specifications of wind turbines, resulting in two defects in the existing technology. First, the copper-aluminum contact stability and vibration resistance are insufficient, which can easily cause safety hazards. The traditional copper-aluminum direct compression or simple plating structure is prone to electrochemical corrosion in the humid and salt spray environment of wind power, generating a high-resistance oxide layer that causes the contact resistance to skyrocket. Single buckle and threaded locking structure are difficult to withstand wideband vibration, resulting in locking fatigue, male and female end loosening, and exacerbating the contact surface fretting wear, forming a vicious cycle that eventually leads to power failure, overheating, and other faults. Lack of precise guide structure also causes misalignment of the connection, further exacerbating contact wear and uneven current distribution. Second, the harsh environment adaptation and installation compatibility are insufficient, leading to protection failure and assembly difficulty. The traditional single O-ring 203 sealing design is prone to aging and leakage in high and low temperature, salt spray, and ultraviolet conditions of wind power, causing component corrosion or short circuit. The ordinary insulating shell has poor weather resistance and cannot guarantee long-term insulation protection. The simple bolt fixing structure has a small bonding area and is prone to displacement under vibration, and it is difficult to adapt to the installation of different specifications of wind power equipment. Part of the electronic detection protection system fails under power failure conditions and needs to be reset manually, which can easily cause secondary faults in unattended wind farms. In summary, the existing product cannot meet the core needs of high reliability, high vibration resistance, strong protection, and long service life in the wind power field. Developing a copper-aluminum connector assembly that adapts to the complex working conditions of wind power has become an urgent need in the industry.

[0039] The embodiment is completed to solve the problems of the prior art. Through the cooperation of the male plug assembly 100 and the female seat fixing assembly 200, the core defects of unstable contact, insufficient anti-vibration protection, poor environmental adaptation, and weak installation compatibility of traditional copper-aluminum wind power connectors are accurately solved, and the needs of low contact resistance, high anti-vibration, strong environmental adaptability, and long service life in the wind power field are fully met. The male plug assembly 100 is designed by integrating the micro eccentric pendulum hammer 116 and the hard locking pin 124, which realizes vibration-triggered automatic locking and prevents loosening, can resist wideband vibration, and avoid locking fatigue and loosening. The wedge-shaped driving block 104 and the double-wedge guide rail groove 204 are matched to solve the problem of docking deflection, improve assembly efficiency and component life, and realize fault early warning without additional power supply, which is suitable for unattended wind power plants. Secondly, the female seat fixing assembly 200 realizes hierarchical guidance and holding through the double-wedge guide rail groove 204, which guarantees the coaxiality of the male and female ends. The composite structure of the insulating positioning bushing 109 and the contact spring 112 blocks the copper-aluminum electrochemical corrosion, compensates the vibration and thermal expansion gap, and ensures the stability of the contact resistance. The integrated design of multiple sealing and installation flange 202 can adapt to harsh working conditions, improve installation compatibility, and adapt to different specifications of wind power equipment. The two assemblies cooperate to form a reliable closed loop of docking, locking, protection, and operation, significantly improve the connection reliability and service life, and fully meet the batch application needs in the wind power field.

[0040] According to Figures 3-4 As shown in the figure, the male plug assembly 100 further includes a male insulating shell 101, and the outer surface of the male insulating shell 101 is provided with an annular guide rail groove 102. The inner surface of the annular guide rail groove 102 is rotatably connected with an operating ring 103 through an annular protrusion. The outer wall of the operating ring 103 is fixedly connected with the opposite side of the three wedge-shaped driving blocks 104. The inner surface of the operating ring 103 is respectively connected with an annular boss 106 and a mounting base 107. A plurality of pin needles 108 are inserted between the through holes of the annular boss 106 and the mounting base 107.

[0041] In the embodiment of the application, first, the male head insulating shell 101 is integrally injection molded by PA66+30% glass fiber reinforced engineering plastic. This material has excellent mechanical strength, weather resistance and electrical insulation performance, can resist high and low temperature alternation of wind power outdoor-40℃~85℃, ultraviolet radiation and sand erosion, and solves the defects of easy aging and brittle fracture of traditional ordinary plastic shell (data reference "Engineering Plastic Performance Manual"); the annular guide groove 102 and the operating ring 103 are rotationally connected through the annular protrusions, the operating ring 103 is machined from 6061 aluminum alloy, is light in weight and strong in rigidity, can drive the three wedge-shaped driving blocks 104 to move synchronously when rotating, realizes the gradual locking of the male head and the female seat, the annular protrusions 106 and the mounting base 107 are both made of aluminum alloy, are fixed with the operating ring 103 through bolts, provide stable mounting reference for the pins 108, and ensure the accurate positioning of the pins 108.

[0042] According to Figures 5-6 As shown in the figure, the outer surface of each pin 108 is sleeved with a metal compensating bellows 110, and each metal compensating bellows 110 is used to compensate the axial and radial displacement of the pin 108 due to temperature change and fan vibration. The outer wall of each metal compensating bellows 110 is fixedly connected with the opposite side of the annular protrusion 106 and the mounting base 107, respectively. The outer surface of each pin 108 is sleeved with an insulating positioning bushing 109, and each insulating positioning bushing 109 is used to prevent short circuit and buffer the radial vibration of the corresponding pin 108. According to Figure 4 As shown in the figure, the outer surface of each insulating positioning bushing 109 is connected with the inner surface of the corresponding through hole of the mounting base 107. The outer surface of each pin 108 is sleeved with a spring fixing ring 111, and the outer wall of each spring fixing ring 111 is annularly arrayed with a group of contact springs 112 at one end.

[0043] In the embodiment of the present application, the pin 108 is made of copper alloy material, which has excellent conductivity and strong oxidation resistance, and fully meets the conductivity requirements of the copper conductor at the end of the cable. The conductivity and oxidation resistance of the material are derived from the commonly used material specifications of electrical connectors. Secondly, the metal compensating bellows 110 sleeved on the outer surface of the pin 108 is made of 304 stainless steel, which has good elastic deformation ability and can effectively compensate the axial and radial displacement of the pin 108 caused by the temperature change of the wind power equipment from -40℃ to 85℃ and the 10-2000Hz wide frequency vibration (referring to the Application Technical Specification of Stainless Steel Bellows). This avoids the loosening of the contact between the pin 108 and the jack 206. Secondly, the insulating positioning bushing 109 is made of polyether ether ketone material, which has high temperature resistance, wear resistance and excellent insulation performance. It can not only prevent short circuit between the pins 108, but also can buffer the radial vibration of the pin 108 through its own elasticity (referring to the Polymer Insulating Material Manual). This further ensures the stability of the contact. And the elastic sheet fixing ring 111 is made of stainless steel, and the contact elastic sheet 112 in the annular array is made of beryllium copper alloy, which has excellent fatigue resistance and elastic recovery ability. Through pre-compression, a stable clamping force is generated, which cooperates with the elastic sheet 208 of the female seat to form a double elastic contact, ensuring the long-term stability of the contact resistance. At the same time, the combination of the pin 108 and the contact elastic sheet 112 can reduce the risk of electrochemical corrosion and solve the problem of easy oxidation of traditional copper-aluminum direct contact.

[0044] According to Figure 7 As shown in FIG. 1, the inside of the operating ring 103 is provided with a mounting groove 113, and the inner walls of the operating ring 103 are connected by bolts and have supports 114. Figure 8 As shown in FIG. 1, the opposite sides of the two supports 114 are connected by a shaft 115, the outer surface of the shaft 115 is rotatably connected to the inner surface of a micro eccentric pendulum 116, and the outer wall of the micro eccentric pendulum 116 is integrally formed with a lug 117. Figure 8 As shown in FIG. 1, the outer wall of the micro eccentric pendulum 116 is integrally formed with a lug 117, the hole of the lug 117 is hung with a torsion spring 118, one end of the outer wall of the torsion spring 118 is hung in the hole of one of the supports 114, and the torsion spring 118 is sleeved on the outer surface of the shaft 115.

[0045] In the embodiment of the present application, first, the bracket 114 is stamped and formed by Q235 steel plate, and the two brackets 114 are fixed in the mounting groove 113 of the operating ring 103 by bolts to provide stable support for the rotating shaft 115; the rotating shaft 115 is a 45 steel after quenching and tempering treatment, with moderate hardness and good wear resistance, and the cooperation gap with the micro eccentric pendulum 116 is controlled within 0.02-0.05mm, which can ensure the smooth rotation of the micro eccentric pendulum 116 (referring to “Full Analysis of Part Fit Tolerance Method”); secondly, the micro eccentric pendulum 116 is made of zinc alloy die casting, and the eccentric design can enhance the vibration sensing sensitivity, and can accurately capture the wide frequency vibration of the wind power equipment 10-2000Hz (referring to “Wind Turbine Generator System Vibration Measurement and Evaluation Specification”), the hanging ear 117 integrally formed on the outer wall cooperates with the torsion spring 118, the torsion spring 118 is made of 304 stainless steel, with strong elastic recovery, which can quickly reset after the micro eccentric pendulum 116 is triggered, avoiding false triggering.

[0046] According to Figures 9-10 , the outer wall of the micro eccentric pendulum 116 is fixedly connected on one side with a hook 119, the outer wall of the two brackets 114 is bolted with a connecting piece 120, the outer wall of the connecting piece 120 is symmetrically connected on one side with a micro spring 121, and the outer wall of the two micro springs 121 is connected between one end with a limiting plate 122.

[0047] In the embodiment of the present application, first, the hook 119 is made of 304 stainless steel, which is welded on one side of the micro eccentric pendulum 116, has high strength and is not easy to rust, and can reliably hang the subsequent linkage components; wherein the connecting piece 120 is made of aluminum alloy, which is fixed between the two brackets 114 by bolts, the micro spring 121 symmetrically connected on one side is made of spring steel, which is stable in elasticity, cooperates with the limiting plate 122, can limit the initial position of the micro eccentric pendulum 116, avoid the micro eccentric pendulum 116 to swing randomly under non-vibration working condition, at the same time, the buffering effect of the micro spring 121 can reduce the impact force when the micro eccentric pendulum 116 is triggered, thereby prolonging the service life of the component, ensuring the accuracy and reliability of the vibration triggering.

[0048] According to Figure 7 , the outer wall of the mounting groove 113 is penetrated by a pin hole 123, according to Figure 10 , the inner surface of the pin hole 123 is connected with a sealing ring 125, the inner surface of the sealing ring 125 and the outer surface of the hard locking pin 124 are connected in clearance fit, the outer wall of the hard locking pin 124 is elastically connected on one end with an energy storage compression spring 126, the outer wall of the energy storage compression spring 126 is connected on one end with a check ring 127, the outer wall of the check ring 127 is connected on one side with the inner wall of the mounting groove 113, and the outer wall of the hard locking pin 124 is fixedly connected with a connecting rod 128.

[0049] In the embodiment of the present application, first, the sealing ring 125 inlaid in the inner wall of the pin hole 123 is made of fluororubber material, which is resistant to high and low temperature, anti-aging and has excellent sealing performance, can effectively block the external sand and water vapor from entering the inside of the installation groove 113, protect the hard locking pin 124 and the internal linkage components, thereby improving the overall protection; wherein the hard locking pin 124 is made of alloy structural steel and is quenched and tempered, and the surface is plated with hard chromium, which has high hardness and strong wear resistance, the meshing tooth groove is opened at one end of the outer wall and is accurately matched with the small tooth groove of the female seat anti-loose tooth ring 209, to ensure close meshing; at the same time, the annular copper alloy conductive contact is embedded on the end face of the end of the hard locking pin 124 away from the connecting rod 128, and the contact is connected with the signal transmission end of the male plug assembly 100 through the built-in flexible conductive sheet; secondly, the energy storage compression spring 126 is made of spring steel material, has stable elastic modulus, can store sufficient elastic force after pre-compression, and can quickly push the hard locking pin 124 to pop out after unlocking; wherein the retainer 127 is made of steel material and is fixed to the inner wall of the installation groove 113, to provide stable support for the energy storage compression spring 126; and the connecting rod 128 is made of 304 stainless steel material and is welded and fixed with the hard locking pin 124, which is reliable in transmission and can link the linear motion of the hard locking pin 124 with the subsequent unlocking structure, to ensure smooth locking and unlocking action.

[0050] According to Figure 10 As shown in the figure, the outer wall of the connecting rod 128 is integrally formed with a horizontal plate 129 at one end, and the outer wall of the retainer 127 is symmetrically provided with a sliding groove on one side, and the inner walls of each sliding groove are slidably connected with a sliding plate 130, the outer walls of the two sliding plates 130 are bolted with a frame 131, and the outer walls of the frame 131 are connected with a metal elastic wire 132.

[0051] In the embodiment of the present application, first, the transverse plate 129 is integrally formed with the connecting rod 128 and is made of 304 stainless steel material, and its size is adapted to the frame 131, and the locking and unlocking of the hard locking pin 124 are realized by cooperation with the sliding plate 130; wherein the sliding plate 130 is made of polyformaldehyde material, has good self-lubricating performance, wear resistance and low friction coefficient, and slides smoothly in the sliding groove of the check ring 127, avoiding jamming in the dusty environment of wind power; secondly, the frame 131 is made of 304 stainless steel material, is fixed by two sliding plates 130 through bolts, and has stable structure; at the same time, the metal elastic wire 132 is woven by 304 stainless steel wire, has high tensile strength and good elastic recovery, replaces the traditional elastic rope, can resist fatigue fracture caused by high-frequency vibration and high-low temperature alternation of wind power, cooperates with the hook 119 of the micro eccentric pendulum weight 116, and when the micro eccentric pendulum weight 116 swings, the frame 131 and the sliding plate 130 can be driven to slide by pulling the metal elastic wire 132, so as to realize the unlocking of the transverse plate 129; the copper alloy conductive contact is embedded on the side of each sliding plate 130 away from the frame 131, the copper alloy signal feedback terminal is pre-set at the corresponding position of the inner wall of the double-wedge guide groove 204 of the female seat fixed assembly 200, when the sliding plate 130 slides and unlocks with the metal elastic wire 132, the conductive contact is synchronous with the signal feedback terminal, a passive conductive loop is constructed, the mechanical action of “vibration exceeding threshold + locking trigger” is converted into electrical signal transmission to the wind power control system, the failure early warning without additional power supply is realized, and the unattended wind power plant is adapted.

[0052] According to Figure 11 As shown in the figure, the female seat fixed assembly 200 further comprises a female seat insulating shell 201, one end of the outer wall of the female seat insulating shell 201 is fixedly connected with a mounting flange 202, the other end of the outer wall of the female seat insulating shell 201 is embedded with an O-ring 203, and three double-wedge guide grooves 204 are opened on one side of the outer wall of the female seat insulating shell 201.

[0053] In the embodiment of the present application, first, the female seat insulating shell 201 is molded by modified epoxy resin, ultraviolet absorbers and anti-aging agents are added, the weather resistance is strong, the insulating performance is stable, the defects of easy aging and leakage of the traditional insulating shell are avoided; wherein the mounting flange 202 is made of Q235 steel material, the surface is treated by hot galvanizing, the rust prevention ability is strong, the contact area with the wind power equipment shell can be increased through radial extension design, a plurality of bolts are fixed in cooperation, the vibration load is dispersed, the problem that the traditional simple bolt fixing is easy to displace is avoided, and at the same time, the versatility design of the flange can adapt to the reserved installation position of different specifications of 1.5MW-15MW wind power equipment, so as to improve the assembly compatibility (referring to “Technical Specification for Wind Power Equipment Installation”); secondly, the O-ring 203 is made of fluororubber material and is embedded at one end of the outer wall of the female seat insulating shell 201, which can effectively block water vapor and dust from entering the butt joint surface, and improve the overall sealing effect.

[0054] According toFigures 12-13 As shown, the inner surface of the female seat insulating shell 201 is connected with an insulating base 205, a plurality of jack holes 206 are penetrated through one side of the outer wall of the insulating base 205, and an elastic sheet positioning insulating seat 207 is connected between the inner surfaces of the plurality of jack holes 206. A group of elastic sheets 208 are arranged in an annular array between the inner surfaces of the plurality of jack holes 206. A circular hole is formed in one side of the outer wall of the female seat insulating shell 201, and the inner surface of the circular hole is connected with the outer surface of a lock tooth ring 209.

[0055] In the embodiment of the present application, first, the insulating base 205 is made of epoxy resin material and is integrally formed with the female seat insulating shell 201, which has excellent insulating performance and high rigidity and can provide a stable installation basis for the jack holes 206 and internal components. The number of the jack holes 206 is matched with the male pin 108, the elastic sheet positioning insulating seat 207 fixed to the inner wall thereof is made of PEEK material, which is resistant to high temperature and wear and can accurately fix the elastic sheet 208 to prevent displacement of the elastic sheet 208. Second, the elastic sheet 208 is made of beryllium copper alloy material and is arranged in an annular array on the inner wall of the jack hole 206, which has excellent elasticity and fatigue resistance and cooperates with the male contact spring 112 to form double elastic clamping, so that the clamping force generated by pre-compression compensates for the gap between vibration and thermal expansion to ensure close contact. The lock tooth ring 209 is made of 40Cr alloy structural steel and is subjected to quenching and tempering treatment, the micro tooth grooves arranged in an annular array on the inner circle of the lock tooth ring 209 are designed with the same modulus as the meshing tooth grooves of the hard locking pin 124, and a ring-shaped copper alloy conductive contact is embedded at the bottom of the tooth groove of the lock tooth ring 209, which is connected with the signal feedback terminal of the female seat fixed assembly 200. When the lock tooth ring 209 is installed in the circular hole of the female seat insulating shell 201, the male wedge-shaped driving block 104 and the female double-wedge-shaped guide rail groove 204 are guided by the thirty-degree outer groove and the fifteen-degree inner groove to achieve precise radial coaxial alignment with the male hard locking pin 124. When the hard locking pin 124 is pushed out by the energy storage compression spring 126 and engages with the lock tooth ring 209, the conductive contact on the end surface of the hard locking pin 124 precisely contacts the conductive contact at the bottom of the tooth groove of the lock tooth ring 209, thereby constructing a passive conductive loop, converting mechanical action of vibration exceeding the threshold value and locking triggering into an electrical signal, transmitting the electrical signal to the wind power control system, realizing fault early warning without additional power supply, adapting to unattended wind farms, and effectively limiting the relative displacement and rotation of the male and female ends due to the high hardness and wear resistance of the tooth surface, thereby strengthening the anti-loose effect in a vibrating environment and solving the defect of easy loosening of the traditional locking structure. Meanwhile, the lock tooth ring 209 is fixed by interference fit with the female seat insulating shell 201, which is reliable and not easy to loosen.

[0056] In use, first, the operator first aligns the male plug assembly 100 with the interface port of the female seat fixed assembly 200, so that the three wedge-shaped drive blocks 104 on the male insulating shell 101 are precisely corresponded with the three double-wedge guide rail grooves 204 on the female insulating shell 201, and then the operator rotates the operating ring 103 in the annular guide rail groove 102 on the outer surface of the male insulating shell 101, which drives the wedge-shaped drive blocks 104 to slide along the outer groove of the double-wedge guide rail groove 204, quickly corrects the plug deviation through the thirty-degree outer groove, and continues to push the male plug assembly 100 to make the wedge-shaped drive blocks 104 slide into the fifteen-degree inner groove to form radial clamping, realizes the coaxial positioning of the male and female ends, and the contact spring 108 between the annular boss 106 on the inner surface of the operating ring 103 and the mounting base 107 passes through the insulating positioning bushing 109 and the metal compensation bellows 110, is precisely inserted into the insertion hole 206 of the insulating base 205 in the female insulating shell 201, and is in contact with the elastic spring 208 which limits the position of the spring positioning insulator 207 in the insertion hole 206, and then the contact spring 112 on the outer spring fixing ring 111 of the insertion pin 108 cooperates with the elastic spring 208 to form double elastic clamping; At this time, after the male plug assembly 100 is properly connected, the O-ring 203 on the female insulating shell 201 tightly fits the end surface of the male insulating shell 101, and multiple seals are realized by cooperating with the sealing ring 125 in the pin hole 123 in the mounting groove 113; When the wind power equipment generates 10-2000Hz broadband vibration with amplitude exceeding the threshold value, the micro eccentric pendulum 116 on the rotating shaft 115 between the supports 114 in the operating ring 103 mounting groove 113 overcomes the limiting force of the micro spring 121 and the limiting plate 122 on the connecting piece 120 to swing around the rotating shaft 115, pulls the metal elastic wire 132 on the frame 131 through the hook 119, drives the sliding plate 130 to slide along the sliding groove to release the limiting of the horizontal plate 129, and the energy storage compression spring 126 releases the elastic force to push the hard locking pin 124 to pop out. The hard locking pin 124 is precisely aligned with the anti-loose gear ring 209 in the circular hole of the female insulating shell 201, and when locked, it is engaged with the popped hard locking pin 124 to realize the ultimate anti-loose, and the conductive contact on the end surface of the hard locking pin 124 is in contact with the conductive contact at the bottom of the gear groove of the anti-loose gear ring 209, which constructs a passive loop to transmit signals to the wind power control system; During operation, the memory alloy temperature-sensitive pad 105 on the wedge-shaped drive block 104 expands to compensate for the attenuation of thermal expansion pressure at high temperature, the metal compensation bellows 110 compensates for the axial and radial displacement of the insertion pin 108, the insulating positioning bushing 109 buffers the radial vibration, and the contact resistance is stable.When it is necessary to maintain, reverse rotation of the operating ring 103 makes the wedge-shaped drive block 104 along the double wedge-shaped guide slot 204 reverse sliding, then push the slide plate 130 reset limit transverse plate 129, hard lock pin 124 withdraws into the pin hole 123, pull out the male plug-in assembly 100 to complete the unlocking separation, the micro eccentric pendulum hammer 116 through the ear 117 on the torsional spring 118 reset, waiting for the next docking use.

[0057] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalent features by those skilled in the art, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pluggable copper-aluminum wind power connector assembly, characterized in that: Male plug-in assembly (100) and female socket fixing assembly (200), wherein the female socket fixing assembly (200) is installed on one side of the outer wall of the male plug-in assembly (100); The male plug-in assembly (100) includes three wedge-shaped drive blocks (104), a miniature eccentric pendulum (116), and a hard locking pin (124). The three wedge-shaped drive blocks (104) adopt a double-sloped design, with the outer slope angle being 30 degrees and the inner slope angle being 15 degrees. The three wedge-shaped drive blocks (104) are used for double-wedge progressive locking. A memory alloy temperature-sensing pad (105) is embedded on one side of the outer wall of each of the three wedge-shaped drive blocks (104). The three memory alloy temperature-sensing pads (105) are used to compensate for the pressure attenuation caused by thermal expansion during phase change expansion at high temperatures. The miniature eccentric pendulum (116) is used to accurately sense broadband vibration and pull the hard locking pin (124) to convert the vibration signal into mechanical unlocking power. The hard locking pin (124) is used for ultimate anti-loosening under vibration conditions. Multiple meshing tooth grooves are opened on one end of the outer wall of the hard locking pin (124). The female seat fixing assembly (200) includes three double wedge guide rail grooves (204) and an anti-loosening tooth ring (209). The outer groove of the three double wedge guide rail grooves (204) has a wedge angle of 30 degrees and the inner groove has a wedge angle of 15 degrees. The outer groove of the three double wedge guide rail grooves (204) is used to quickly correct the insertion and removal deviation, and the inner groove is used to achieve rapid radial clamping force. The inner ring of the anti-loosening tooth ring (209) has multiple micro-tooth grooves distributed in a ring. The micro-tooth grooves of the anti-loosening tooth ring (209) are used to precisely align with the meshing tooth groove of the hard locking pin (124) and achieve meshing.

2. The pluggable copper-aluminum wind power connector assembly according to claim 1, characterized in that: The male plug assembly (100) also includes a male insulating shell (101). The outer surface of the male insulating shell (101) is provided with an annular guide groove (102). The inner surface of the annular guide groove (102) is rotatably connected to an operating ring (103) through an annular protrusion. Some of the outer wall of the operating ring (103) is fixedly connected to the opposite side of three wedge-shaped drive blocks (104). The inner surface of the operating ring (103) is respectively connected to an annular boss (106) and a mounting base (107). Multiple pins (108) are inserted between the through holes of the annular boss (106) and the mounting base (107).

3. The pluggable copper-aluminum wind power connector assembly according to claim 2, characterized in that: Each of the pins (108) is fitted with a metal compensation bellows (110) on its outer surface. Each metal compensation bellows (110) is used to compensate for the axial and radial displacement of the pin (108) caused by temperature changes and fan vibration. The two ends of the outer wall of each metal compensation bellows (110) are fixedly connected to the opposite side of the annular boss (106) and the mounting base (107), respectively. Each of the pins (108) is fitted with an insulating positioning bushing (109) on its outer surface. Each insulating positioning bushing (109) is used to prevent short circuits and buffer the radial vibration of a corresponding pin (108). The outer surface of each insulating positioning bushing (109) is connected to the inner surface of a corresponding through hole of the mounting base (107). Each of the pins (108) is fitted with a spring retaining ring (111). One end of the outer wall of each spring retaining ring (111) has a set of contact springs (112) arranged in an annular array.

4. The pluggable copper-aluminum wind power connector assembly according to claim 3, characterized in that: The operating ring (103) has an installation groove (113) inside. The inner walls of the operating ring (103) are bolted to the two sides of the inner wall of the operating ring (103). A rotating shaft (115) is connected between the opposite sides of the two supports (114). The outer surface of the rotating shaft (115) is rotatably connected to the inner surface of the miniature eccentric pendulum (116). The outer wall of the miniature eccentric pendulum (116) has an integrally formed hanging ear (117). A torsion spring (118) is hung in the hole of the hanging ear (117). One end of the outer wall of the torsion spring (118) is hung in the hanging hole on one side of the outer wall of one of the supports (114), and the torsion spring (118) is sleeved on the outer surface of the rotating shaft (115).

5. The pluggable copper-aluminum wind power connector assembly according to claim 4, characterized in that: A hook (119) is fixedly connected to one side of the outer wall of the miniature eccentric pendulum (116), and a connector (120) is bolted between the outer walls of the two brackets (114). A miniature spring (121) is symmetrically connected to one side of the outer wall of the connector (120), and a limit plate (122) is connected between one end of the outer wall of the two miniature springs (121).

6. The pluggable copper-aluminum wind power connector assembly according to claim 5, characterized in that: A pin hole (123) is passed through one side of the outer wall of the mounting groove (113). A sealing ring (125) is connected between the inner surfaces of the pin hole (123). The inner surface of the sealing ring (125) and the outer surface of the hard locking pin (124) are connected with a clearance fit. An energy storage compression spring (126) is elastically connected to one end of the outer wall of the hard locking pin (124). A retaining ring (127) is connected to one end of the outer wall of the energy storage compression spring (126). One side of the outer wall of the retaining ring (127) is connected to one side of the inner wall of the mounting groove (113). A connecting rod (128) is fixedly connected to one end of the outer wall of the hard locking pin (124).

7. The pluggable copper-aluminum wind power connector assembly according to claim 6, characterized in that: One end of the outer wall of the connecting rod (128) is integrally formed with a horizontal plate (129). The outer wall of the retaining ring (127) is symmetrically provided with sliding grooves. The inner surface walls of each sliding groove are slidably connected with a sliding plate (130). The outer surface walls of the two sliding plates (130) are bolted together with a frame (131). The outer surface walls of the frame (131) are connected with a metal elastic wire (132).

8. The pluggable copper-aluminum wind power connector assembly according to claim 1, characterized in that: The female seat fixing assembly (200) also includes a female seat insulating shell (201), one end of the outer wall of the female seat insulating shell (201) is fixedly connected to a mounting flange (202), and the other end of the outer wall of the female seat insulating shell (201) is fitted with an O-ring (203). The three double wedge guide rail grooves (204) are opened on one side of the outer wall of the female seat insulating shell (201).

9. The pluggable copper-aluminum wind power connector assembly according to claim 8, characterized in that: An insulating base (205) is connected to the inner surface of the female socket insulating shell (201). A plurality of insertion holes (206) are penetrated through one side of the outer wall of the insulating base (205). A spring-loaded positioning insulating seat (207) is connected between the inner surfaces of the plurality of insertion holes (206). A set of elastic springs (208) is arranged in a ring between the inner surfaces of the plurality of insertion holes (206). A circular hole is opened on one side of the outer wall of the female socket insulating shell (201). The inner surface of the circular hole is connected to the outer surface of the anti-loosening toothed ring (209).

10. A connector, characterized in that, Includes the pluggable copper-aluminum wind power connector assembly as described in any one of claims 1-9.

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