Self-monitoring control architecture, method and universal joint based on universal joint shaft

Abstract

The present invention discloses a self-monitoring and control structure, method and universal joint based on a universal joint shaft, which relates to the field of mechanical transmission technology. The control structure includes: an assembly base structure, including a limit shaft seat and a cross shaft body connected to the limit shaft seat; an adaptive transmission structure, including a touch-pressure transmission ball and a touch-pressure transmission rod body; the touch-pressure transmission ball is arranged on the side wall of the limit shaft seat, and the touch-pressure transmission ball abuts the cross shaft body, and the touch-pressure transmission ball abuts the touch-pressure transmission rod body; a touch-pressure monitoring structure, which is fixed to the limit shaft seat and abuts the touch-pressure monitoring structure; and a centering control structure, in which the centering limit end and the shaft end of the cross shaft body are detachably connected. The present invention solves the problem in the prior art that the cross shaft body inside the universal joint is prone to continuous use due to the combined effects of alternating loads, friction and impact forces over a long period of time, resulting in centering deviation, thereby affecting the overall transmission efficiency and operating stability, and lacks corresponding improvement measures.

Description

Technical Field

[0001] The present invention relates to the field of mechanical transmission technology, and in particular to a universal joint shaft-based self-monitoring control architecture, method and universal joint. Background Art

[0002] Currently in mechanical transmission systems, universal joints are commonly used to achieve variable-angle power transmission. They allow two sets of drive shafts to maintain power transmission within a certain angle variation range and are widely used in many fields such as automobiles, aerospace, and engineering machinery. Therefore, ensuring the precise transmission of universal joints is extremely critical.

[0003] However, the cross-axle within existing universal joints is susceptible to continuous alternating loads, friction, and impact forces over long periods of use, leading to misalignment. For example, in actual operating conditions, the shaft and its retaining member typically fit tightly together and move relative to each other. This high-frequency friction inevitably leads to gradual material loss on the shaft surface, resulting in localized wear. Furthermore, when a mechanical system experiences sudden shock or overload, the shaft is susceptible to external compression, causing localized shape changes.

[0004] The direct consequence of the above-mentioned wear and extrusion problems is that the shaft deviates from the center correspondence of the predetermined hole position, that is, the misalignment. Once the shaft position is misaligned, the originally precise power transmission process will be disturbed, resulting in a significant reduction in transmission efficiency, causing the mechanical system to consume more kinetic energy to complete the established power transmission output, increasing the overall system energy consumption; at the same time, it will also cause additional vibration, further aggravating component wear and increasing maintenance costs; in addition, long-term shaft misalignment may cause damage to key components inside the mechanical system, seriously affecting the stable operation of the mechanical system and significantly shortening its service life. Summary of the Invention

[0005] To this end, the present invention provides a self-monitoring and control architecture, method and universal joint based on a universal joint shaft to solve the technical problem in the prior art that the internal cross shaft of the universal joint is prone to continuous exposure to the combined effects of alternating loads, friction and impact forces during long-term use, resulting in centering deviation, thereby affecting the overall transmission efficiency and system operation stability, and lacks technical improvement measures.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A universal joint shaft-based self-monitoring and control architecture includes:

[0008] The assembly base structure includes a limited shaft seat and a cross shaft body embedded in the limited shaft seat;

[0009] An adaptive transmission structure, comprising a contact-pressure transmission ball and a contact-pressure transmission rod;

[0010] The touch-pressure transmission ball is assembled on the side wall of the limiting shaft seat, and the touch-pressure transmission ball is in transmission contact with the cross-axis body, and the side of the touch-pressure transmission ball away from the cross-axis body is in transmission contact with one end of the touch-pressure transmission rod body;

[0011] The touch pressure monitoring structure is configured as a touch pressure sensor, wherein the touch pressure sensor is fixedly connected to the limit shaft seat and is in transmission contact with the other end of the touch pressure transmission rod body;

[0012] The centering regulating structure has a centering limit end portion, and the centering limit end portion of the centering regulating structure is connected to the center position of the shaft end portion of the cross shaft body in a detachable transfer assembly.

[0013] On the basis of the above technical solution, the present invention is further described as follows:

[0014] As a further embodiment of the present invention,

[0015] The assembly base structure includes a first transmission shaft seat, a second transmission shaft seat, a limiting shaft seat and a cross shaft body;

[0016] The first transmission shaft seat and the second transmission shaft seat are respectively connected to the two groups of transmission shafts located in the transmission path in a one-to-one corresponding manner, and the limiting shaft seat is fixedly connected to both sides of the opposite ends between the first transmission shaft seat and the second transmission shaft seat;

[0017] The cross-axis body has two sets of shaft bodies arranged in a cross shape, and one set of shaft bodies of the cross-axis body is matched and embedded in the two sets of limit shaft seats corresponding to the first transmission shaft seat, and the other set of shaft bodies of the cross-axis body is matched and embedded in the two sets of limit shaft seats corresponding to the first transmission shaft seat;

[0018] The adaptive transmission structure and the touch-pressure monitoring structure are both provided in four groups, and the four groups of the adaptive transmission structure and the touch-pressure monitoring structure are respectively assembled and provided on the four groups of the limiting shaft seats in a one-to-one correspondence.

[0019] As a further embodiment of the present invention,

[0020] Each set of the limiting shaft seats includes an inner limiting ring portion and an outer pressing edge portion;

[0021] The outer pressing edge portion is fixedly assembled on the outer side portion of the inner limiting ring portion;

[0022] The inner limiting ring portion can be relatively rotatably fitted on the cross shaft body;

[0023] The outer pressing edge is arranged in a hexagonal shape, and an assembly distance is left between the hexagonal side portions of the outer pressing edge and the inner limiting ring portion;

[0024] Each set of the adaptive transmission structure includes the touch pressure transmission ball and the touch pressure transmission rod body, the touch pressure transmission rod body is configured as a spring telescopic rod, and each set of the touch pressure monitoring structure includes a touch pressure sensor. There are six sets of the touch pressure transmission ball and the spring telescopic rod in each set of the adaptive transmission structure and the touch pressure sensor in each set of the touch pressure monitoring structure.

[0025] The base portions of the six groups of touch and pressure sensors are fixedly connected to the inner six sides of the outer pressing edge portions of each group of the limit shaft seats in a one-to-one correspondence, and the monitoring ends of the six groups of touch and pressure sensors are transmission-fixedly connected to one end portion of the six groups of spring telescopic rods in a one-to-one correspondence.

[0026] The six groups of contact and pressure transmission balls are respectively arranged in a one-to-one correspondence with the six groups of spring telescopic rods, and one side of the six groups of contact and pressure transmission balls is correspondingly facing the inner center portion of the inner limiting ring portion;

[0027] The other ends of the six groups of spring telescopic rods are fixedly connected with ball head docking parts, and the other ends of the six groups of spring telescopic rods are in transmission contact with the other side parts of the six groups of contact and pressure transmission balls.

[0028] As a further embodiment of the present invention,

[0029] Each set of the adaptive transmission structures also includes six sets of ball bases;

[0030] The six groups of ball bearing bases are evenly spaced and fixedly assembled on the inner limiting ring portion, and the six groups of ball bearing bases are respectively arranged in a one-to-one correspondence with the six groups of spring telescopic rods;

[0031] The six groups of contact and pressure transmission balls are respectively mounted inside the six groups of ball bases in a one-to-one correspondence;

[0032] The ball base is configured as a ball guide base, and the six groups of touch-pressure transmission balls are respectively and one-to-one correspondingly and directionally displaceably assembled inside the six groups of ball guide bases; or, the ball base is configured as a ball limiting base, and the touch-pressure transmission balls are arranged to roll in a centering manner based on the ball limiting base, and the touch-pressure transmission balls protrude from the inner side wall of the inner limiting ring based on the ball limiting base.

[0033] As a further embodiment of the present invention,

[0034] A centering cone groove is provided at the center of each shaft end of the cross shaft body, and a plurality of groups of limiting balls that can be arbitrarily centered and rolled are evenly spaced and installed on the inner side walls of the shaft ends of the cross shaft body corresponding to the centering cone groove;

[0035] The centering limit end portion of the centering control structure is configured as a centering limit cone;

[0036] The centering limit cone extends through the limit shaft seat to the inner side of the centering cone slot, and a driving assembly is provided at one end of the centering limit cone facing away from the centering cone slot. A predetermined distance is left between the outer side wall of the centering limit cone and the plurality of groups of limit balls in a normal state.

[0037] The driving component is configured as an electrically controlled push rod, the base portion of the electrically controlled push rod is connected to the limit shaft seat in a fixed assembly, and the output end portion of the electrically controlled push rod is connected to the centering limit cone in a transmission fixed connection; or, the driving component is configured as an electrically controlled shift driving component, the base portion of the electrically controlled shift driving component is connected to the limit shaft seat in a fixed assembly, and the plane side movement energy output end portion of the electrically controlled shift driving component is connected to the centering limit cone in a transmission fixed connection.

[0038] As a further embodiment of the present invention, the present invention further comprises:

[0039] The shaft seat slip ring structure includes a first power-connecting slip ring group and a second power-connecting slip ring group;

[0040] The inner ring of the first electrically connected slip ring assembly is fixedly mounted on the first transmission shaft seat, and the inner ring of the first electrically connected slip ring assembly and the pressure sensors and the electric control push rods in the two groups of limit shaft seats corresponding to the first transmission shaft seat are connected via a circuit.

[0041] The inner ring of the second electrically connected slip ring group is fixedly mounted on the second transmission shaft seat, and the inner ring of the second electrically connected slip ring group and the touch pressure sensors and the electric control push rods in the two groups of limiting shaft seats corresponding to the second transmission shaft seat are connected through a circuit.

[0042] As a further embodiment of the present invention,

[0043] The outer ring body of the first electrical slip ring group and the outer ring body of the second electrical slip ring group are both connected to an electrical control structure through a circuit, and the electrical control structure includes a power module and a control module connected through a circuit;

[0044] The control output end of the control module is connected to a relay via a circuit, and the output end of the relay is connected to the electric-controlled push rod or the electric-controlled shift drive component via a circuit;

[0045] The touch pressure sensor is connected to the control input end of the control module via a circuit.

[0046] A method for self-monitoring and controlling centering based on the universal joint shaft self-monitoring and controlling architecture comprises the following steps:

[0047] When the cross-axis in the assembly base structure reciprocates based on the inner limit ring, the contact and pressure transmission balls located on the inner limit ring are pressed into the ball guide base. At this time, the six sets of spring telescopic rods are adaptively compressed after being acted upon by the contact and pressure transmission balls. The rebound pressure of the six sets of spring telescopic rods enables the six sets of touch and pressure sensors to synchronously monitor the changes in vibration pressure.

[0048] When at least two sets of touch pressure sensors alternately detect abnormal changes in vibration pressure that exceed an error threshold, the control module receives the real-time monitoring pressure from the at least two sets of touch pressure sensors and determines that the cross-shaft body has a tendency to deviate from the alignment of the inner limit ring due to deformation;

[0049] The specific deformation position is further determined based on the real-time corresponding orientation of the cross-axis body by at least two sets of touch pressure sensors, and at the same time, the electronically controlled push rod in the centering control structure is controlled to drive the centering limit cone to form a pushing effect. At this time, the centering limit cone can be relatively rotatably abutted against the centering cone groove at the center position of the end of the cross-axis body. In this way, while avoiding pre-wear between the centering limit cone and the cross-axis body, the centering limit cone is used to reduce the further centering deviation of the cross-axis body or reduce further component damage, and to help maintain the current transmission efficiency within a predetermined range.

[0050] As a further embodiment of the present invention,

[0051] When at least one group of touch pressure sensors consistently detects abnormal changes in vibration pressure exceeding an error threshold, the control module receives real-time monitoring pressure from the at least one group of touch pressure sensors and determines that deformation occurs in the inner limit ring portion and / or the outer pressure edge portion of the limit shaft seat. Based on the abnormal orientation detected by the at least one group of touch pressure sensors, the control module determines the specific deformation positions of the inner limit ring portion and / or the outer pressure edge portion, and then controls the electronically controlled push rod to drive the centering limit cone to form a thrusting action corresponding to the cross shaft body, thereby reducing the possibility of subsequent deviation of the cross shaft body from the centering, or performing a component replacement intervention process.

[0052] A universal joint comprises the aforementioned universal joint shaft-based centering self-monitoring and control architecture.

[0053] The present invention has the following beneficial effects:

[0054] This centering self-monitoring and control architecture and method can effectively serve as the assembly basis of the overall functional architecture through the assembly base structure. At the same time, it can use the adaptive transmission structure and the touch pressure monitoring structure to effectively monitor the axis centering deviation state of the assembly base structure in real time, and can further use the centering control structure to complete the axis centering adjustment process for the assembly base structure, thereby effectively ensuring the transmission efficiency and transmission accuracy of the overall architecture, and improving the functional operation stability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0056] Figure 1 Schematic diagram of the overall axonometric structure of the universal joint shaft-based self-monitoring and control architecture provided in an embodiment of the present invention.

[0057] Figure 2 Schematic diagram of the assembly structure of the adaptive transmission structure and the touch-pressure monitoring structure in the universal joint shaft-based self-monitoring and control architecture provided by an embodiment of the present invention.

[0058] Figure 3 A schematic diagram of the centering function structure corresponding to the cross-axis in the centering self-monitoring and control architecture based on the universal joint shaft provided in an embodiment of the present invention.

[0059] Figure 4 This is a schematic diagram of the assembly structure of the centering control structure in the centering self-monitoring and control architecture based on the universal joint shaft provided in an embodiment of the present invention when the cross shaft body is in the jacking state.

[0060] Figure 5 The self-monitoring and control architecture based on the universal joint shaft provided in the embodiment of the present invention is Figure 4 A magnified schematic diagram of the local structure at point A.

[0061] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0062] Assembly base structure 1: first transmission shaft seat 11, second transmission shaft seat 12, limiting shaft seat 13, inner limiting ring portion 131, outer pressing edge portion 132, cross shaft body 14, centering cone groove 141, limiting ball 142;

[0063] Adaptive transmission structure 2: ball guide base 21, contact pressure transmission ball 22, spring telescopic rod 23, ball head docking part 24;

[0064] Touch pressure monitoring structure 3: touch pressure sensor 31;

[0065] Centering control structure 4: electric control push rod 41, centering limit cone 42;

[0066] The shaft seat slip ring structure 5 includes a first power-connecting slip ring group 51 and a second power-connecting slip ring group 52 . DETAILED DESCRIPTION

[0067] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0068] The terms "upper", "lower", "left", "right", "middle", etc. used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the present invention without substantially changing the technical content.

[0069] Example 1

[0070] like Figures 1 to 5 As shown, an embodiment of the present invention provides a self-monitoring and control structure for centering based on a universal joint shaft and a universal joint including the self-monitoring and control structure, wherein the self-monitoring and control structure includes an assembly base structure 1, an adaptive transmission structure 2, a touch-pressure monitoring structure 3, a centering control structure 4 and an axle seat slip ring structure 5, which is used to effectively serve as the assembly basis of the overall functional architecture through the assembly base structure 1. At the same time, the adaptive transmission structure 2 and the touch-pressure monitoring structure 3 can be used to effectively monitor the axis centering deviation state of the assembly base structure 1 in real time, and the centering control structure 4 can be used to further complete the axis centering adjustment process for the assembly base structure 1, thereby effectively ensuring the transmission efficiency and transmission accuracy of the overall architecture and improving the functional operation stability and practicality. The specific settings are as follows:

[0071] Please refer to Figure 1The assembly base structure 1 includes a first transmission shaft seat 11, a second transmission shaft seat 12, a limiting shaft seat 13 and a cross shaft body 14; wherein, the first transmission shaft seat 11 and the second transmission shaft seat 12 are respectively connected to the two groups of transmission shafts located in the transmission path in a one-to-one corresponding manner, and the limiting shaft seat 13 is fixedly connected to both sides of the opposite ends between the first transmission shaft seat 11 and the second transmission shaft seat 12; the cross shaft body 14 has two groups of shaft bodies arranged in a cross shape, and one group of shaft bodies of the cross shaft body 14 is matched with the two groups of limiting shaft seats 13 corresponding to the first transmission shaft seat 11 in an embedded manner, and the other group of shaft bodies of the cross shaft body 14 is matched with the two groups of limiting shaft seats 13 corresponding to the first transmission shaft seat 11 in an embedded manner, so as to form a universal joint assembly basic structure.

[0072] Specifically, please refer to Figure 2 The limiting shaft seat 13 includes an inner limiting ring portion 131 and an outer pressing edge portion 132 fixedly assembled on the outer side of the inner limiting ring portion 131; wherein, the inner limiting ring portion 131 can be relatively rotatably fitted on the cross shaft body 14; the outer pressing edge portion 132 is arranged in a hexagonal shape, and an assembly spacing is left between the hexagonal side portions of the outer pressing edge portion 132 and the inner limiting ring portion 131; it is used to effectively serve as the transfer assembly basis of the cross shaft body 14 through the limiting shaft seat 13, and simultaneously serve as the positioning assembly basis of the adaptive transmission structure 2 and the touch pressure monitoring structure 3.

[0073] Please continue to refer to Figure 1 and Figure 2 , the adaptive transmission structure 2 and the touch pressure monitoring structure 3 are each provided with four groups, and the four groups of the adaptive transmission structure 2 and the touch pressure monitoring structure 3 are respectively assembled and arranged on the four groups of the limit shaft seats 13 in a one-to-one correspondence; specifically, each group of the adaptive transmission structure 2 includes a ball guide base 21, a touch pressure transmission ball 22 and a spring telescopic rod 23, and each group of the touch pressure monitoring structure 3 includes a touch pressure sensor 31, wherein the ball guide base 21, the touch pressure transmission ball 22, the spring telescopic rod 23 There are six groups of spring telescopic rods 23 and touch pressure sensors 31. The base parts of the six groups of touch pressure sensors 31 are fixedly connected to the hexagonal inner sides of the outer pressure edge 132 of each group of the limiting shaft seat 13, and the monitoring ends of the six groups of touch pressure sensors 31 are respectively and one-to-one correspondingly connected to one end of the six groups of spring telescopic rods 23. The other ends of the six groups of spring telescopic rods 23 are fixedly connected to the ball head docking part 24 for flexibly abutting against the touch pressure transmission ball 22.

[0074] The six groups of ball guide bases 21 are fixedly assembled on the inner limit ring portion 131 at uniform intervals, and the six groups of ball guide bases 21 and the six groups of spring telescopic rods 23 are respectively arranged one-to-one; the six groups of touch-pressure transmission balls 22 are respectively and one-to-one correspondingly and directionally displaceably assembled inside the six groups of ball guide bases 21, and the six groups of touch-pressure transmission balls 22 are based on one side of the ball guide base 21 and are all corresponding to the inner center portion of the inner limit ring portion 131. The six groups of touch-pressure transmission balls 22 are based on the inner center portion of the inner limit ring portion 131. The other side portions are respectively connected and abutted with the ball head docking portions 24 of the six groups of spring telescopic rods 23 in a transmission manner, so that when the cross-axis body 14 is fitted to the inner side of the inner limit ring portion 131 and reciprocates based on the inner limit ring portion 131, the touch-pressure transmission balls 22 can be pressed into the inside of the ball guide base 21. At this time, with the help of the rebound pressure of the six groups of spring telescopic rods 23, the six groups of touch-pressure sensors 31 can synchronously monitor the uniform vibration pressure changes, and can further respectively monitor the abnormal vibration pressure changes of the cross-axis body 14 and the inner limit ring portion 131.

[0075] Please refer to Figures 3 to 5 A centering cone groove 141 is provided at the center position of the shaft end of the cross shaft body 14, and a plurality of groups of limiting balls 142 that can be arbitrarily centered and rolled are evenly spaced and assembled on the shaft end of the cross shaft body 14 corresponding to the inner side wall of the centering cone groove 141.

[0076] The centering control structure 4 includes an electric push rod 41 and a centering limit cone 42 that is fixedly connected to the output end of the electric push rod 41, wherein the base of the electric push rod 41 is fixedly assembled with the limit shaft seat 13, and the centering limit cone 42 passes through the limit shaft seat 13 and extends to the inner side of the centering cone slot 141, and a predetermined distance is left between the outer side wall of the centering limit cone 42 and the plurality of groups of limit balls 142, so as to monitor the abnormal change of the vibration pressure. When the cross-axis body 14 tends to deviate from the centering relative to the limiting shaft seat 13, the electric-controlled push rod 41 drives the centering limiting cone 42 to form a pushing action, so that the centering limiting cone 42 can synchronously establish an abutment effect with several groups of the limiting balls 142, thereby reducing the degree of centering deviation of the cross-axis body 14 relative to the limiting shaft seat 13. At the same time, the limiting balls 142 can effectively ensure the established relative rotation function of the cross-axis body 14, reduce the overall transmission efficiency impact, and improve the functional stability and practicality of the structure.

[0077] Please continue to refer to Figure 1The shaft seat slip ring structure 5 includes a first power-connected slip ring group 51 and a second power-connected slip ring group 52; wherein, the inner ring body of the first power-connected slip ring group 51 is transmission-fixedly assembled on the first transmission shaft seat 11, and the inner ring body of the first power-connected slip ring group 51 is connected to the touch pressure sensors 31 and the electric control push rods 41 in the two groups of limit shaft seats 13 corresponding to the first transmission shaft seat 11 through a circuit; the inner ring body of the second power-connected slip ring group 52 is transmission-fixedly assembled on the second transmission shaft seat 12, and the inner ring body of the second power-connected slip ring group 52 is connected to the touch pressure sensors 31 and the electric control push rods 41 in the two groups of limit shaft seats 13 corresponding to the second transmission shaft seat 12 through a circuit.

[0078] Specifically, the outer ring body of the first power-connected slip ring group 51 and the outer ring body of the second power-connected slip ring group 52 are both provided with an electric control structure through circuit connection, and the electric control structure includes a power module and a control module connected through the circuit. The control module can be selected from but not limited to a single-chip microcomputer control board of model AT80C51 and a microcontroller of model STM32; the control output end of the control module is connected to a relay through the circuit, and the output end of the relay is connected to the electric control push rod 41 through the circuit; the touch pressure sensor 31 is connected to the control input end of the control module through the circuit, so as to realize automatic monitoring and real-time feedback of the vibration pressure changes of the cross shaft body 14 and the inner limit ring part 131 through the touch pressure sensor 31, and at the same time, when it is judged that a trend of deviation from the centering occurs according to the feedback result, the degree of deviation from the centering is automatically reduced through the electric control push rod 41, or an external intervention process is performed.

[0079] An embodiment of the present invention further provides a method for self-monitoring and controlling the centering of a universal joint shaft according to the aforementioned self-monitoring and controlling architecture, which specifically includes the following steps:

[0080] When the cross-axis body 14 in the assembly base structure 1 reciprocates based on the inner limiting ring portion 131, the contact pressure transmission balls 22 located on the inner limiting ring portion 131 are pressed into the interior of the ball guide base 21. At this time, the six sets of spring telescopic rods 23 are adaptively compressed by the contact pressure transmission balls 22. The rebound pressure of the six sets of spring telescopic rods 23 enables the six sets of touch pressure sensors 31 to synchronously monitor changes in vibration pressure.

[0081] When the at least two sets of touch pressure sensors 31 alternately detect abnormal changes in vibration pressure that exceed an error threshold, the control module receives the real-time monitoring pressure from the at least two sets of touch pressure sensors 31 and determines that the cross-shaft body 14 has a tendency to deviate from the centering due to deformation based on the inner limit ring portion 131. The specific deformation position is further determined based on the real-time position of the cross-shaft body 14 corresponding to the at least two sets of touch pressure sensors 31. At the same time, the control module controls the electronically controlled push rod 41 in the centering control structure 4 to drive the centering limit cone 42 to form a thrusting effect. At this time, the centering limit cone 42 can be relatively rotatably abutted against the centering cone groove 141 at the center position of the shaft end of the cross-shaft body 14. In this way, while avoiding pre-wear between the centering limit cone 42 and the cross-shaft body 14, the centering limit cone 42 effectively reduces the degree of further centering deviation of the cross-shaft body 14 or reduces further component damage, and helps maintain the current transmission efficiency within a predetermined range.

[0082] When at least one set of touch pressure sensors 31 consistently detects abnormal changes in vibration pressure that exceed an error threshold, the control module receives real-time monitoring pressure from the at least one set of touch pressure sensors 31 and determines that the inner limit ring portion 131 and / or the outer pressure edge portion 132 in the limit shaft seat 13 are deformed. Based on the abnormal position detected by the at least one set of touch pressure sensors 31, the control module determines the specific deformation position of the inner limit ring portion 131 and / or the outer pressure edge portion 132. Furthermore, the control module controls the electronically controlled push rod 41 to drive the centering limit cone 42 to form a thrusting action corresponding to the cross-shaft body 14, thereby reducing the possibility of subsequent centering deviation of the cross-shaft body 14 through the centering limit cone 42, or directly performs a component replacement intervention process.

[0083] Example 2

[0084] In Example 2, the same symbols are given to the same structures as in Example 1, and the same descriptions are omitted. The difference between Example 2 and Example 1 is that the ball guide base 21 is replaced by a ball limit base, that is, the touch pressure transmission ball 22 can always perform centering rolling based on the ball limit base under normal conditions, and the touch pressure transmission ball 22 protrudes from the inner side wall of the inner limit ring part 131 based on the ball limit base, so as to achieve the support of the cross shaft body 14 by means of the adaptive rolling property of the touch pressure transmission ball 22, which significantly reduces the possibility of wear and deformation of the cross shaft body 14 and the inner limit ring part 131 and / or the outer pressure edge part 132, and can effectively maintain the automatic monitoring function of the vibration pressure change of the touch pressure sensor 31 by means of the contact and vibration feedback effect between the spring telescopic rod 23 and the touch pressure transmission ball 22, thereby further improving the functional stability and practicality of the overall architecture.

[0085] Example 3

[0086] In Example 3, the same symbols are given to the same structures as in Examples 1 and 2, and the same descriptions are omitted. The difference between Example 3 and Examples 1 and 2 is that the electric push rod 41 is replaced by an electric shift drive component, and the electric shift drive component is configured as but not limited to an electromagnetic shift drive component or an electric screw drive component, and the electric shift drive component has a plane-side movement energy output end, and the centering limit cone 42 is transmission-fixedly connected to the kinetic energy output end of the electric shift drive component to achieve that when the centering deviation direction of the cross-axis body 14 is monitored and obtained, the plane displacement kinetic energy output by the electric shift drive component significantly improves the limiting specificity of the centering limit cone 42 corresponding to the centering deviation direction, thereby effectively improving the functional flexibility and practicality of the overall architecture.

[0087] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A self-monitoring and control architecture for centering of a universal joint shaft, characterized in that: include: The assembly base structure includes a limited shaft seat and a cross shaft body embedded in the limited shaft seat; An adaptive transmission structure, comprising a contact-pressure transmission ball and a contact-pressure transmission rod; The touch-pressure transmission ball is assembled on the side wall of the limiting shaft seat, and the touch-pressure transmission ball is in transmission contact with the cross-axis body, and the side of the touch-pressure transmission ball away from the cross-axis body is in transmission contact with one end of the touch-pressure transmission rod body; The touch pressure monitoring structure is configured as a touch pressure sensor, wherein the touch pressure sensor is fixedly connected to the limit shaft seat and is in transmission contact with the other end of the touch pressure transmission rod body; The centering regulating structure has a centering limit end portion, and the centering limit end portion of the centering regulating structure is connected to the center position of the shaft end portion of the cross shaft body in a detachable transfer assembly; The assembly base structure includes a first transmission shaft seat, a second transmission shaft seat, a limiting shaft seat and a cross shaft body; The first transmission shaft seat and the second transmission shaft seat are respectively connected to the two groups of transmission shafts located in the transmission path in a one-to-one corresponding manner, and the limiting shaft seat is fixedly connected to both sides of the opposite ends between the first transmission shaft seat and the second transmission shaft seat; The cross-axis body has two sets of shaft bodies arranged in a cross shape, and one set of shaft bodies of the cross-axis body is matched and embedded in the two sets of limit shaft seats corresponding to the first transmission shaft seat, and the other set of shaft bodies of the cross-axis body is matched and embedded in the two sets of limit shaft seats corresponding to the first transmission shaft seat; The adaptive transmission structure and the touch-pressure monitoring structure are both provided in four groups, and the four groups of the adaptive transmission structure and the touch-pressure monitoring structure are respectively assembled and provided on the four groups of the limiting shaft seats in a one-to-one correspondence.

2. The self-monitoring and control architecture based on the universal joint shaft according to claim 1 is characterized in that: Each set of the limiting shaft seats includes an inner limiting ring portion and an outer pressing edge portion; The outer pressing edge portion is fixedly assembled on the outer side portion of the inner limiting ring portion; The inner limiting ring portion can be relatively rotatably fitted on the cross shaft body; The outer pressing edge is arranged in a hexagonal shape, and an assembly distance is left between the hexagonal side portions of the outer pressing edge and the inner limiting ring portion; Each set of the adaptive transmission structure includes the touch pressure transmission ball and the touch pressure transmission rod body, the touch pressure transmission rod body is configured as a spring telescopic rod, and each set of the touch pressure monitoring structure includes a touch pressure sensor. There are six sets of the touch pressure transmission ball and the spring telescopic rod in each set of the adaptive transmission structure and the touch pressure sensor in each set of the touch pressure monitoring structure. The base portions of the six groups of touch and pressure sensors are fixedly connected to the inner six sides of the outer pressing edge portions of each group of the limit shaft seats in a one-to-one correspondence, and the monitoring ends of the six groups of touch and pressure sensors are transmission-fixedly connected to one end portion of the six groups of spring telescopic rods in a one-to-one correspondence. The six groups of contact and pressure transmission balls are respectively arranged in a one-to-one correspondence with the six groups of spring telescopic rods, and one side of the six groups of contact and pressure transmission balls is correspondingly facing the inner center portion of the inner limiting ring portion; The other ends of the six groups of spring telescopic rods are fixedly connected with ball head docking parts, and the other ends of the six groups of spring telescopic rods are in transmission contact with the other side parts of the six groups of contact and pressure transmission balls.

3. The self-monitoring and control architecture based on the universal joint shaft according to claim 2, characterized in that: Each set of the adaptive transmission structures also includes six sets of ball bases; The six groups of ball bearing bases are evenly spaced and fixedly assembled on the inner limiting ring portion, and the six groups of ball bearing bases are respectively arranged in a one-to-one correspondence with the six groups of spring telescopic rods; The six groups of contact and pressure transmission balls are respectively mounted inside the six groups of ball bases in a one-to-one correspondence; The ball base is configured as a ball guide base, and the six groups of contact and pressure transmission balls are respectively and one-to-one correspondingly and directionally displaceably assembled inside the six groups of ball guide bases; Alternatively, the ball base is configured as a ball limiting base, the touch-pressure transmission ball is configured to roll centeringly based on the ball limiting base, and the touch-pressure transmission ball protrudes from the inner side wall of the inner limiting ring based on the ball limiting base.

4. The self-monitoring and control architecture based on the universal joint shaft according to claim 2, characterized in that: A centering cone groove is provided at the center of each shaft end of the cross shaft body, and a plurality of groups of limiting balls that can be arbitrarily centered and rolled are evenly spaced and installed on the inner side walls of the shaft ends of the cross shaft body corresponding to the centering cone groove; The centering limit end portion of the centering control structure is configured as a centering limit cone; The centering limit cone extends through the limit shaft seat to the inner side of the centering cone slot, and a driving assembly is provided at one end of the centering limit cone facing away from the centering cone slot. A predetermined distance is left between the outer side wall of the centering limit cone and the plurality of groups of limit balls in a normal state. The driving component is configured as an electrically controlled push rod, the base portion of the electrically controlled push rod is connected to the limit shaft seat in a fixed assembly, and the output end portion of the electrically controlled push rod is connected to the centering limit cone in a transmission fixed connection; or, the driving component is configured as an electrically controlled shift driving component, the base portion of the electrically controlled shift driving component is connected to the limit shaft seat in a fixed assembly, and the plane side movement energy output end portion of the electrically controlled shift driving component is connected to the centering limit cone in a transmission fixed connection.

5. The self-monitoring and control architecture based on the universal joint shaft according to claim 4 is characterized in that: Also includes: The shaft seat slip ring structure includes a first power-connecting slip ring group and a second power-connecting slip ring group; The inner ring of the first electrically connected slip ring assembly is fixedly mounted on the first transmission shaft seat, and the inner ring of the first electrically connected slip ring assembly and the pressure sensors and the electric control push rods in the two groups of limit shaft seats corresponding to the first transmission shaft seat are connected via a circuit. The inner ring of the second electrically connected slip ring group is fixedly mounted on the second transmission shaft seat, and the inner ring of the second electrically connected slip ring group and the touch pressure sensors and the electric control push rods in the two groups of limiting shaft seats corresponding to the second transmission shaft seat are connected through a circuit.

6. The self-monitoring and control architecture for centering based on a universal joint shaft according to claim 5, characterized in that: The outer ring body of the first electrical slip ring group and the outer ring body of the second electrical slip ring group are both connected to an electrical control structure through a circuit, and the electrical control structure includes a power module and a control module connected through a circuit; The control output end of the control module is connected to a relay via a circuit, and the output end of the relay is connected to the electric-controlled push rod or the electric-controlled shift drive component via a circuit; The touch pressure sensor is connected to the control input end of the control module via a circuit.

7. A method for self-monitoring and controlling centering of a universal joint shaft according to any one of claims 4 to 6, characterized in that: The steps include: When the cross-axis in the assembly base structure reciprocates based on the inner limit ring, the contact and pressure transmission balls located on the inner limit ring are pressed into the ball guide base. At this time, the six sets of spring telescopic rods are adaptively compressed after being acted upon by the contact and pressure transmission balls. The rebound pressure of the six sets of spring telescopic rods enables the six sets of touch and pressure sensors to synchronously monitor the changes in vibration pressure. When at least two sets of touch pressure sensors alternately detect abnormal changes in vibration pressure that exceed an error threshold, the control module receives the real-time monitoring pressure from the at least two sets of touch pressure sensors and determines that the cross-shaft body has a tendency to deviate from the alignment of the inner limit ring due to deformation; The specific deformation position is further determined based on the real-time corresponding orientation of the cross-axis body by at least two sets of touch pressure sensors, and at the same time, the electronically controlled push rod in the centering control structure is controlled to drive the centering limit cone to form a pushing effect. At this time, the centering limit cone can be relatively rotatably abutted against the centering cone groove at the center position of the end of the cross-axis body. In this way, while avoiding pre-wear between the centering limit cone and the cross-axis body, the centering limit cone is used to reduce the further centering deviation of the cross-axis body or reduce further component damage, and to help maintain the current transmission efficiency within a predetermined range.

8. The centering self-monitoring and control method according to claim 7, characterized in that: When at least one group of touch pressure sensors consistently detects abnormal changes in vibration pressure exceeding an error threshold, the control module receives real-time monitoring pressure from the at least one group of touch pressure sensors and determines that deformation occurs in the inner limit ring portion and / or the outer pressure edge portion of the limit shaft seat. Based on the abnormal orientation detected by the at least one group of touch pressure sensors, the control module determines the specific deformation positions of the inner limit ring portion and / or the outer pressure edge portion, and then controls the electronically controlled push rod to drive the centering limit cone to form a thrusting action corresponding to the cross shaft body, thereby reducing the possibility of subsequent deviation of the cross shaft body from the centering, or performing a component replacement intervention process.

9. A universal joint, characterized in that: It includes the self-monitoring and control architecture based on the universal joint shaft as described in any one of claims 1 to 6.

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