Quick release anti-vibration electrical connector assembly for high speed current feeder

Abstract

The application provides a quick-release anti-vibration electric connector assembly for a high-speed electric lead device, which comprises an anti-vibration electric connector, a high-speed electric lead device and a support assembly; the anti-vibration electric connector comprises an electric connector main body, a quick-connection transmission shaft and a counter-joint tool, one end of the quick-connection transmission shaft is connected to the electric connector main body, the counter-joint tool is connected to an engine rotor, the other end of the quick-connection transmission shaft is in clearance fit and position-limiting connection with the counter-joint tool, and the electric connector main body is provided with a plurality of flexible pins; the high-speed electric lead device is provided with a plurality of quick-connection pin seats for realizing electric connection with the flexible pins; one end of the support assembly is in position-limiting connection with the electric connector main body, and the other end of the support assembly is in position-limiting connection with the high-speed electric lead device. The application is used for connecting two relatively rotating components and can realize quick plugging and reliable signal rotation transmission in a high-speed and high-vibration rotating environment, and is especially suitable for signal counter-joint between a damping rotor and an electric lead device in a high-speed electric lead device.

Description

Technical Field

[0001] This invention relates to the field of high-speed rotating machinery testing technology, and more specifically, to a quick-release anti-vibration electrical connector assembly for high-speed conductors. Background Technology

[0002] In the research and testing of high-end equipment such as aero engines and gas turbines, it is often necessary to extract electrical signals (such as strain and temperature sensor signals) from high-speed rotating rotors (such as engine main shafts). High-speed signal extractors are key equipment for achieving this function. In actual installation, the high-speed signal extractor needs to be connected to the engine rotor via an intermediate electrical connector assembly.

[0003] Existing electrical connector assemblies face two major challenges in application: First, inconvenient assembly and disassembly. Engine test benches are space-constrained with tight testing cycles, and traditional connection methods often use multiple bolts for fastening, which is time-consuming and labor-intensive, requires specialized tools, and demands high operator skills, severely impacting testing efficiency. Second, poor vibration resistance. Engines experience severe and complex vibrations (axial, radial, and torsional vibrations) during operation, and traditional rigid connection structures struggle to effectively absorb and isolate these vibrations. This can easily lead to loosening of connecting parts, poor electrical contact, signal transmission interruption, and even premature failure of core moving components such as bearings, seriously affecting the reliability of test data and the safe operation of equipment. Summary of the Invention

[0004] (a) Technical problems to be solved The technical problem to be solved by this invention is that traditional electrical connectors are cumbersome to disassemble and assemble, inefficient, and have poor connection reliability, unstable signal transmission, and easy damage to key components in high-speed power supply applications.

[0005] (II) Technical Solution To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a quick-release anti-vibration electrical connector assembly for a high-speed actuator, comprising an anti-vibration electrical connector, a high-speed actuator, and a support assembly; the anti-vibration electrical connector includes an electrical connector body, a quick-connect drive shaft, and a mating fixture, one end of the quick-connect drive shaft being connected to the electrical connector body, the mating fixture being connected to an engine rotor, and the other end of the quick-connect drive shaft being limited and clearance-fitted to the mating fixture, the clearance being specifically used to absorb axial vibration displacement transmitted from the engine; the electrical connector body is provided with a plurality of flexible pins; the high-speed actuator is provided with a plurality of quick-connect pin seats, the quick-connect pin seats being used to cooperate with the flexible pins to achieve electrical connection; one end of the support assembly is positioned and connected to the electrical connector body, and the other end of the support assembly is positioned and connected to the high-speed actuator.

[0006] Preferably, the electrical connector body includes a bracket, a limiting sleeve, a first bearing, a second bearing, and a first connecting plate. The quick-connect drive shaft is disposed inside the bracket and is rotatably supported on the bracket via the first bearing. One end of the limiting sleeve abuts against the first bearing, and the other end of the limiting sleeve abuts against the second bearing. The first rotating shaft of the first connecting plate is rotatably supported on the bracket via the second bearing. The first connecting plate is provided with a plurality of flexible pins.

[0007] Preferably, the first bearing and the second bearing are a pair of angular contact ball bearings mounted back to back, capable of withstanding bidirectional axial and radial loads, forming the core vibration-resistant support structure.

[0008] Preferably, the high-speed conductor includes a high-speed conductor body and a second connecting plate, the second shaft of the second connecting plate is rotatably connected to the high-speed conductor body, and the second connecting plate is provided with quick-connect pin seats corresponding to a plurality of flexible pins.

[0009] Preferably, the first connecting plate is provided with a first positioning connecting part, and the second connecting plate is provided with a second positioning connecting part, the first positioning connecting part and the second positioning connecting part being connected in a cooperative manner; wherein, the first positioning connecting part is a shift fork, and the second positioning connecting part is a shift fork hole, or the first positioning connecting part is a shift fork hole, and the second positioning connecting part is a shift fork. The first positioning connecting part and the second positioning connecting part are connected in a cooperative manner to achieve torque transmission and rapid circumferential positioning.

[0010] Preferably, the docking fixture includes a connecting base, a connecting shaft, and fasteners. The fasteners securely connect the connecting base and the engine rotor. The connecting shaft is fixedly connected to the connecting base and has a central through hole.

[0011] Preferably, the quick-connect drive shaft has a stepped surface within its mounting through hole, with the end face of the connecting shaft facing the stepped surface. The axial length of the connecting shaft is less than the installation length to form an installation gap, wherein the installation length is the distance between the stepped surface and the bottom surface of the connecting base. This installation gap is a key structural feature of the present invention for achieving axial vibration resistance, allowing limited axial relative displacement between the quick-connect drive shaft and the docking fixture, thereby absorbing and buffering axial vibrations from the engine and preventing vibrations from being directly transmitted to the precision bearings and electrical contact parts inside the electrical connector.

[0012] Preferably, the bracket is provided with a bearing oil mist cooling channel, and the outer bearing race of the first bearing and / or the second bearing is provided with an oil mist dispersion groove. The bearing oil mist cooling channel is connected to the oil mist dispersion groove. The cooling oil mist provided by the external lubrication system is evenly introduced into the bearing raceway through the channel and dispersion groove to lubricate and cool the high-speed rotating bearing, significantly improving the service life and reliability of the bearing under high speed and high load.

[0013] Preferably, the system also includes a temperature sensor and a data transmission line. The bracket has a measurement channel, the temperature sensor is located within the measurement channel and abuts against the first bearing / second bearing, and the data transmission line is electrically connected to the temperature sensor and leads out along the measurement channel. This design enables real-time online monitoring of the bearing's operating temperature, providing assurance for predictive maintenance and equipment safety.

[0014] Preferably, the system further includes a wave spring, a pressure ring, and a lock nut. The pressure ring is sleeved on the first rotating shaft. One end of the wave spring abuts against the second bearing, and the other end of the wave spring abuts against the pressure ring. The lock nut is threaded to the first rotating shaft, and its end face abuts against the pressure ring. By tightening the lock nut to compress the wave spring, a precise axial preload can be applied to the back-to-back angular contact ball bearings, eliminating clearance. Simultaneously, the wave spring can absorb a certain amount of axial vibration, improving the stiffness and vibration resistance of the rotor system.

[0015] Preferably, the support assembly has a third positioning connection part, and the vibration-damping electrical connector has a fourth positioning connection part, with the third positioning connection part and the fourth positioning connection part engaging and connecting; wherein, the third positioning connection part is a guide post, and the fourth positioning connection part is a guide hole, or the third positioning connection part is a guide hole, and the fourth positioning connection part is a guide post. The engagement of the guide post and the guide hole enables rapid coarse positioning of the components before final tightening, greatly facilitating installation alignment.

[0016] (III) Beneficial Effects The above-described technical solution of the present invention has at least the following advantages: 1. In this invention, through the design of the quick-connect drive shaft and the limiting insertion of the docking tool, the positioning of the guide post and the guide hole, and the torque transmission of the shift fork and the shift fork hole, the connection between the entire connector assembly and the engine and the high-speed actuator does not require the use of multiple tools for cumbersome bolt connection, and can realize quick docking operation, which significantly improves the efficiency of testing and disassembly.

[0017] 2. In this invention, firstly, the axial installation clearance between the quick-connect drive shaft and the docking fixture effectively absorbs the axial vibration displacement of the engine. Secondly, the back-to-back arrangement of the first and second bearings supporting the rotating components provides high-rigidity, high-precision rotational support, capable of withstanding complex radial and axial loads. Wave springs further absorb the axial vibration of the engine. These designs fundamentally solve the problem of connection reliability in high-vibration environments.

[0018] 3. In this invention, the independent bearing oil mist cooling channel design ensures heat dissipation and lubrication of the bearing under high-speed operating conditions, preventing overheating failure. The integration of the bearing temperature sensor enables real-time status monitoring, facilitating fault early warning and maintenance. The flexible pin design avoids wear or poor contact caused by rigid contact under vibration and misalignment conditions, improving the stability of electrical signal transmission.

[0019] 4. This invention integrates vibration-resistant support, quick connection, electrical signal transmission, and status monitoring into a compact component, which simplifies the system structure, reduces external auxiliary devices, and is particularly suitable for engine test bench environments with limited space. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the structure of a quick-release anti-vibration electrical connector assembly for high-speed conductors provided in an embodiment of the present invention. Figure 2 This is a three-dimensional structural schematic diagram of the vibration-resistant electrical connector provided in an embodiment of the present invention. Figure 3 This is an exploded view of the structure of the first connecting disk and the second connecting disk provided in an embodiment of the present invention. Figure 4 This is a structural cross-sectional view of the connection area between the quick-connect drive shaft and the docking fixture provided in an embodiment of the present invention; Figure 5 This is one of the partial structural cross-sectional views of the vibration-resistant electrical connector provided in the embodiments of the present invention; Figure 6 This is a second partial structural cross-sectional view of the vibration-resistant electrical connector provided in an embodiment of the present invention; Figure 7 This is the third partial structural cross-sectional view of the vibration-resistant electrical connector provided in this embodiment of the invention.

[0022] The labels for the attached figures are as follows: 1. Vibration-resistant electrical connector; 2. High-speed conductor; 3. Support assembly; 4. Mounting gap; 5. Temperature sensor; 6. Data transmission line; 7. Wave spring; 8. Wire threading channel; 11. Electrical connector body; 12. Quick-connect drive shaft; 13. Docking fixture; 14. Fourth positioning connection part; 111. Bracket; 1111. Bearing oil mist cooling channel; 1112. Measuring channel; 112. Limiting sleeve; 113. First bearing; 114. Second bearing; 115. First connecting plate; 1151. Flexible pin; 1152. First positioning... Connecting part; 1153, First chassis; 1154, First mounting plate body; 11541, Through hole; 121, Stepped surface; 131, Base; 132, Connecting shaft; 133, Fastener; 21, High-speed conductor body; 211, Engine docking hole; 212, Engine docking stop; 213, Conductor docking screw hole; 214, Conductor quick-connect stop; 22, Second connecting plate; 221, Quick-connect pin seat; 222, Second positioning connecting part; 223, Second chassis; 224, Second mounting plate body; 31, Third positioning connecting part. Detailed Implementation To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0023] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this invention will be described in more detail below with reference to specific embodiments: like Figure 1 , Figure 2 and Figure 3As shown, this embodiment of the invention provides a quick-release anti-vibration electrical connector assembly for a high-speed conductor, including an anti-vibration electrical connector 1, a high-speed conductor 2, and a support assembly 3.

[0026] The vibration-resistant electrical connector 1 is a core functional component. For example... Figure 2 , Figure 5 As shown, the main body 11 of the electrical connector mainly includes a bracket 111, a limiting sleeve 112, a first bearing 113, a second bearing 114, and a first connecting plate 115. A quick-connect drive shaft 12 is disposed within the bracket 111 and is rotatably supported on the bracket 111 by the first bearing 113 (preferably an angular contact ball bearing in this embodiment). The limiting sleeve 112 is fitted onto the quick-connect drive shaft 12, with one end abutting against the first bearing 113 and the other end abutting against the second bearing 114 to fill the assembly gap between the first bearing 113 and the second bearing 114, thereby enabling the transmission of forces from both sides. The first connecting plate 115 passes through the center of the bracket 111 via its first pivot and is supported by the second bearing 114. Multiple flexible pins 1151 are mounted on the first connecting plate 115. These pins have radial elasticity and can achieve reliable electrical contact with the corresponding sockets on the high-speed conductor 2. Specifically, the electrical connector body 11 also has an engine mating hole 211, an engine mating stop 212, an electric conductor mating screw hole 213, and an electric conductor quick-connect stop 214. The engine mating stop 212 is used to match the stop on the engine (one is a male stop, the other is a female stop) to ensure the concentricity between the electrical connector body 11 and the engine. The engine mating hole 211 is matched with the connection hole on the engine for bolts to pass through and achieve a fastening connection. The electric conductor quick-connect stop 214 is used to match the stop on the high-speed electric conductor 2 (one is a male stop, the other is a female stop) to ensure the concentricity between the electrical connector body 11 and the high-speed electric conductor 2. The electric conductor mating screw hole 213 is matched with the connection hole on the high-speed electric conductor 2 for bolts to pass through and achieve a fastening connection. More specifically, the first connecting plate 115 also includes a first chassis 1153 and a first mounting plate 1154. The first mounting plate 1154 is fixedly installed inside the first chassis 1153. A plurality of flexible pins 1151 are fixedly installed on the first mounting plate 1154. Wires electrically connected to the flexible pins 1151 are led out from the wire hole 11541 to the wire channel 8, and then led out through the wire channel 8 to electrically connect with the electrical components of the engine rotor. Further, the wires electrically connected to the flexible pins 1151 are welded and fixed to the inner wall surface of the wire hole 11541 of the second chassis 223 and the second mounting plate 224.

[0027] The docking fixture 13 is used to connect the engine rotor. For example... Figure 4As shown, it includes a base 131 fixed to the engine rotor by fasteners 133 (such as bolts), and a connecting shaft 132 vertically fixed to the center of the base 131. The connecting shaft 132 has a through hole at its center, allowing internal engine cables to pass through. A mounting through hole is provided at the end of the quick-connect drive shaft 12, with a stepped surface 121 formed on its inner side. During installation, the mounting through hole of the quick-connect drive shaft 12 fits onto the connecting shaft 132, with the end face of the connecting shaft 132 facing the stepped surface 121, but a specific installation gap 4 is maintained between them. The installation gap 4 allows the connecting shaft 132 to move an appropriate distance axially, thereby absorbing axial vibrations of the engine. More specifically, the connecting shaft 132 has a hexagonal cross-section to achieve a connection and engagement with the quick-connect drive shaft 1, allowing the quick-connect drive shaft 1 to rotate together via the connecting shaft 132.

[0028] The high-speed conductor 2 includes a main body 21 and a second connecting plate 22. The second connecting plate 22 is rotatably mounted on the main body 21 via bearings, and has multiple sets of quick-connect pin seats 221 for mating with the flexible pins 1151 on the vibration-resistant electrical connector 1. Figure 3 As shown, to achieve torque transmission, the first connecting plate 115 is provided with a first positioning connecting part 1152 (e.g., a shift fork), and the second connecting plate 22 is provided with a corresponding second positioning connecting part 222 (e.g., a shift fork hole). After the two are inserted, the rotational motion of the engine rotor can be transmitted to the rotor part of the high-speed actuator 2. Specifically, the second connecting plate 22 also includes a second chassis 223 and a second mounting plate 224. The second mounting plate 224 is fixedly installed in the second chassis 223, and a plurality of connector pin seats 221 are fixedly installed on the second mounting plate 224. The wires electrically connected to the connector pin seats 221 are led out from the holes on the second chassis 223 and the second mounting plate 224 to the end where the high-speed actuator 2 is located, and electrically connected to the electrical components on the high-speed actuator 2. Further, the wires electrically connected to the connector pin seats 221 are welded and fixed to the inner wall surface of the holes in the second chassis 223 and the second mounting plate 224.

[0029] The support assembly 3 is used to fix and support the entire connector assembly. It is provided with a third positioning connection part 31 (e.g., a guide post), and correspondingly, a fourth positioning connection part 14 (e.g., a guide hole) is provided on the bracket 111 of the vibration-damping electrical connector 1. During installation, the guide post is first inserted into the guide hole for coarse positioning, and then the two ends of the support assembly 3 are fixed to the high-speed conductor body 21 and the test bench (or engine stator part) respectively with bolts or other fasteners.

[0030] like Figure 6As shown, a bearing oil mist cooling channel 1111 is machined inside the bracket 111. This channel is connected to an external oil mist lubrication system and leads to the oil mist dispersion groove (not shown) on the outer spacer of the bearing at the mounting positions of the first bearing 113 and the second bearing 114, thereby achieving continuous lubrication and cooling of the bearing. Figure 7 As shown, the bracket 111 is also machined with a measurement channel 1112, and a temperature sensor 5 is installed inside. Its probe is close to the outer ring of the bearing to monitor the temperature, and the data is led out to the external monitoring equipment through the data transmission line 6.

[0031] like Figure 5 As shown, a wave spring 7 and a pressure ring (not shown) are sequentially fitted onto the first shaft of the first connecting disc 115, and finally locked with a lock nut (not shown). By tightening the lock nut to compress the wave spring 7, a precise axial preload can be applied to the second bearing 114 (and the first bearing 113 associated with the limiting sleeve 112), and the wave spring 7 can absorb the axial vibration of the engine.

[0032] Brief description of working principle: During installation, first fix the docking fixture 13 to the engine rotor, and install the high-speed actuator 2 and support assembly 3 in the predetermined positions on the test bench. Then, fit the quick-connect drive shaft 12 of the anti-vibration electrical connector 1 onto the connecting shaft 132 of the docking fixture 13 to form a clearance fit. Next, move the anti-vibration electrical connector 1 so that the fourth positioning connection part 14 (guide hole) on its bracket 111 aligns with the third positioning connection part 31 (guide post) on the support assembly 3 for insertion, achieving initial positioning and support. Finally, push the anti-vibration electrical connector 1 so that the flexible pin 1151 on its first connecting plate 115 inserts into the quick-connect pin seat 221 on the second connecting plate 22 of the high-speed actuator 2, while the first positioning connection part 1152 (shift fork) also inserts into the second positioning connection part 222 (shift fork hole), completing the final electrical and mechanical connection, and locking it with fasteners. During operation, the rotation of the engine is transmitted to the rotor of the high-speed actuator 2 through the docking fixture 13, the quick-connect drive shaft 12, and the shift fork of the first connecting plate 115, achieving synchronous rotation. The axial vibration of the engine is absorbed by the mounting gap 4, while radial and complex vibrations are mitigated by the back-to-back angular contact ball bearing assembly and the preload structure. Electrical signals are transmitted through stable contact between the flexible pin 1151 and the quick-connect pin seat 221.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-release, vibration-resistant electrical connector assembly for high-speed conductors, characterized in that, The device includes an anti-vibration electrical connector, a high-speed actuator, and a support assembly. The anti-vibration electrical connector includes a connector body, a quick-connect drive shaft, and a mating fixture. One end of the quick-connect drive shaft is connected to the connector body, and the mating fixture is connected to the engine rotor. The other end of the quick-connect drive shaft is limited and clearance-fitted to the mating fixture. The connector body has multiple flexible pins. The high-speed actuator has multiple quick-connect pin seats, which are used to cooperate with the flexible pins to achieve electrical connection. One end of the support assembly is positioned and connected to the connector body, and the other end of the support assembly is positioned and connected to the high-speed actuator.

2. The quick-release anti-vibration electrical connector assembly for high speed current wiper as claimed in claim 1, wherein, The electrical connector body includes a quick-connect drive shaft, a bracket, a limiting sleeve, a first bearing, a second bearing, and a first connecting plate. The quick-connect drive shaft is disposed inside the bracket and is rotatably supported on the bracket via the first bearing. One end of the limiting sleeve abuts against the first bearing, and the other end of the limiting sleeve abuts against the second bearing. The first rotating shaft of the first connecting plate is rotatably supported on the bracket via the second bearing. The first connecting plate is provided with a plurality of flexible pins.

3. The quick-release anti-vibration electrical connector assembly for a high speed current wiper of claim 2, wherein, The high-speed conductor includes a high-speed conductor body and a second connecting plate. The second shaft of the second connecting plate is rotatably connected to the high-speed conductor body. The second connecting plate is provided with quick-connect pin seats that correspond one-to-one with a plurality of flexible pins.

4. The quick-release anti-vibration electrical connector assembly for a high speed current wiper of claim 3, wherein, The first connecting plate is provided with a first positioning connecting part, and the second connecting plate is provided with a second positioning connecting part. The first positioning connecting part and the second positioning connecting part are connected in cooperation. The first positioning connecting part is a shift fork, and the second positioning connecting part is a shift fork hole, or the first positioning connecting part is a shift fork hole and the second positioning connecting part is a shift fork.

5. The quick-release anti-vibration electrical connector assembly for a high speed current wiper of claim 2, wherein, The docking fixture includes a connecting base, a connecting shaft, and fasteners. The fasteners securely connect the connecting base to the engine rotor. The connecting shaft is fixedly connected to the connecting base and has a central through hole.

6. The quick-release anti-vibration electrical connector assembly for a high speed current warden of claim 5, wherein, The quick-connect drive shaft has a stepped surface in its mounting through hole. The end face of the connecting shaft faces the stepped surface. The axial length of the connecting shaft is less than the installation length to form an installation gap. The installation length is the distance between the stepped surface and the bottom surface of the connecting base.

7. The quick-release anti-vibration electrical connector assembly for high-speed conductors as described in claim 2, characterized in that, The bracket is provided with a bearing oil mist cooling channel, and the outer bearing spacer of the first bearing and / or the second bearing is provided with an oil mist dispersion groove. The bearing oil mist cooling channel is connected to the oil mist dispersion groove.

8. The quick-release anti-vibration electrical connector assembly for a high speed current warden claim 2, wherein, It also includes a temperature sensor and a data transmission line. The bracket has a measurement channel. The temperature sensor is located in the measurement channel and abuts against the first bearing / second bearing. The data transmission line is electrically connected to the temperature sensor and leads out along the measurement channel.

9. The quick-release anti-vibration electrical connector assembly for a high speed current warden claim 2, wherein, It also includes a wave spring, a pressure ring, and a locking nut. The pressure ring is sleeved on the first rotating shaft. One end of the wave spring abuts against the second bearing, and the other end of the wave spring abuts against the pressure ring. The locking nut is threaded to the first rotating shaft and its end face abuts against the pressure ring.

10. The quick-release, anti-vibration electrical connector assembly for a high speed current warden claim 1, wherein The support component is provided with a third positioning connection part, and the vibration-resistant electrical connector is provided with a fourth positioning connection part. The third positioning connection part and the fourth positioning connection part are connected in cooperation. The third positioning connection part is a guide post and the fourth positioning connection part is a guide hole, or the third positioning connection part is a guide hole and the fourth positioning connection part is a guide post.

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