Lightweight transmission shaft detection device

Abstract

The invention discloses a lightweight transmission shaft detection device, and belongs to the technical field of transmission shaft detection, the lightweight transmission shaft detection device comprises a detection table, a first supporting block and a second supporting block are installed on the detection table, a sliding groove is formed in the first supporting block, and a sliding block is slidably connected in the sliding groove; according to the invention, the control equipment adjusts the current of the annular magnetorheological fluid cavity, changes the state of the magnetorheological fluid and dynamically adjusts the supporting rigidity and damping ratio of the lightweight transmission shaft, so that when a bumpy road condition is simulated, the rigidity and damping are moderately or greatly improved according to the bumpy degree, and different vibration impacts are accurately simulated; the improved rigidity and damping not only can fix the transmission shaft through expansion of the flexible diaphragm, but also can accelerate fatigue damage accumulation of the transmission shaft, detection is carried out by gradually improving the rigidity and damping, the performance of the transmission shaft at different fatigue accumulation speeds can be observed, a basis is provided for evaluating the service life and reliability of the transmission shaft, and the efficient detection requirement of the modern manufacturing industry is met.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission shaft detection, and in particular relates to a lightweight transmission shaft detection device. Background Art

[0002] In the development process of the automotive industry, the complexity of vehicle driving conditions has put forward strict requirements on the performance of the drive shaft. As a key component of the vehicle transmission system, the drive shaft needs to transmit power stably and reliably under complex road conditions.

[0003] Traditional drive shaft detection devices often use rigid connection methods such as steel pipes to fix and support the drive shaft. However, this rigid connection has many limitations. In actual vehicle driving, road conditions are complex and changeable, and bumpy road conditions vary in degree. Due to its fixed stiffness and damping, steel pipes cannot simulate the changes in vibration impact caused by different degrees of bumps. For example, under mildly bumpy road conditions, the vehicle's drive shaft will be subjected to smaller and lower-frequency vibration impacts; under severely bumpy road conditions, the vibration impacts are more intense and higher in frequency. The traditional steel pipe connection method cannot accurately simulate these different degrees of vibration impacts, making it difficult for the test results to truly reflect the performance of the drive shaft under actual complex road conditions.

[0004] Traditional detection devices also have defects in adaptability. The lightweight drive shafts used in different automobiles or aerospace products have significant differences in size, structure and material properties. However, traditional detection devices are usually designed for drive shafts of a specific type or size range and lack effective adaptive adjustment mechanisms. When faced with drive shafts of different sizes, the detection device needs to be complexly readjusted or even replaced, which not only increases the cost and time of detection, but also reduces the detection efficiency, making it difficult to meet the needs of modern manufacturing for fast and efficient detection.

[0005] In addition, traditional testing methods are also insufficient in evaluating the fatigue and reliability of the transmission shaft. Different degrees of support stiffness and damping changes will cause the transmission shaft to be subjected to different stresses and strains, which in turn affect its fatigue accumulation and reliability. However, due to the lack of flexible and variable support stiffness and damping adjustment mechanisms, traditional testing devices are difficult to fully and effectively test the performance of the transmission shaft at different fatigue accumulation speeds, and cannot provide engineers with sufficient and accurate basis for improving the transmission shaft design and enhancing its durability.

[0006] In order to avoid the above technical problems, it is necessary to provide a lightweight transmission shaft detection device to overcome the above defects in the prior art. Summary of the invention

[0007] The object of the present invention is to provide a lightweight transmission shaft detection device to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a lightweight transmission shaft detection device, comprising a detection platform, a first support block and a second support block are respectively installed on the detection platform, a sliding groove is opened in the first support block, a sliding block is slidably connected in the sliding groove, and an electric push rod is installed on the first support block; An annular magnetorheological fluid cavity is rotatably arranged in the sliding block and the second supporting block, and the electromagnetic parts on the two annular magnetorheological fluid cavities are connected to the first electric slip ring assembly, and the two first electric slip ring assemblies are respectively installed on one side of the sliding block and the second supporting block through a fixing frame, a lightweight transmission shaft is installed between the two annular magnetorheological fluid cavities, and a flexible diaphragm is arranged at the contact part between the annular magnetorheological fluid cavity and the lightweight transmission shaft, a control device is fixedly installed on one side of the second supporting block, and the two first electric slip ring assemblies are connected to the control device.

[0009] As a preferred implementation, a synchronous drive mechanism is provided on one side of the second supporting block.

[0010] As a preferred embodiment, the synchronous drive mechanism includes a gear ring installed on one side of the annular magnetorheological fluid cavity on the second support block, a first gear is rotatably provided on one side of the sliding block, the first gear is meshed with the gear ring, a second gear is fixedly installed on one side of the first gear, the tooth diameters of the second gear and the gear ring are smaller than the first gear, a rack is fixedly installed on one side of the second support block through a side frame, the second gear and the rack are meshed with each other, when the sliding block is driven to retract, the transmission between the gear ring and the rack will drive the lightweight transmission shaft clamped by the magnetic fluid in the annular magnetorheological fluid cavity to rotate synchronously.

[0011] As a preferred implementation scheme, a plurality of flexible pressure detection sheets are installed on the flexible diaphragm on the inner surface of each annular magnetorheological fluid cavity, the plurality of flexible pressure detection sheets are generally annular in shape, and the plurality of flexible pressure detection sheets are connected to a second electric slip ring assembly via an electrical connection portion.

[0012] As a preferred implementation scheme, the second electric slip ring assembly is connected to the control device, and each of the second electric slip ring assemblies is fixedly mounted on a fixing frame on the corresponding side. The pressure detection data of the plurality of flexible pressure detection sheets are uniformly transmitted to the control device, and the data is analyzed by the control device.

[0013] As a preferred implementation, a pressure regulating mechanism is provided on one side of the two annular magnetorheological fluid cavities.

[0014] As a preferred embodiment, the pressure adjustment mechanism includes an elastic telescopic cylinder and a movable rod that can be extended and retracted at one end of the elastic telescopic cylinder, a spring is arranged in the elastic telescopic cylinder, and a movable block sliding in the elastic telescopic cylinder is fixedly arranged at one end of the movable rod, and one side of the spring presses against one side of the movable block.

[0015] As a preferred embodiment, a pressure detection block is fixedly provided at the other end of the movable rod, and a pressure block is rotatably provided on one side of the pressure detection block. One side of the pressure block is pressed against one end of the installed lightweight transmission shaft, and cooperates with the expansion clamping of the flexible diaphragm in the annular magnetorheological fluid cavity, so that the lightweight transmission shaft can maintain a relatively stable installation.

[0016] As a preferred embodiment, one side of each elastic telescopic cylinder is threadedly connected with a threaded adjustment rod, one end of the threaded adjustment rod is rotatably provided with an adjustment block that slides in the elastic telescopic cylinder, and the other end of the spring abuts against one side of the adjustment block.

[0017] As a preferred implementation, a turning handle is fixedly provided on the outer end of the threaded adjustment rod, and the outer portion of the elastic telescopic cylinder is fixedly connected to one side of the sliding block through a connecting arm.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention adjusts the current of the annular magnetorheological fluid cavity through a control device, changes the state of the magnetorheological fluid, and dynamically adjusts the lightweight transmission shaft support stiffness and damping ratio. When simulating bumpy road conditions, the stiffness and damping are moderately or greatly increased according to the degree of bumpiness, and different vibration impacts are accurately simulated. The increased stiffness and damping can not only fix the transmission shaft through the expansion of the flexible diaphragm, but also accelerate the accumulation of fatigue damage. By gradually increasing the stiffness and damping for testing, the performance of the transmission shaft at different fatigue accumulation speeds can be observed, providing a basis for evaluating its life and reliability, and meeting the high-efficiency testing needs of the modern manufacturing industry.

[0019] In the synchronous drive mechanism of the present invention, the gear ring, the first gear, the second gear and the rack cooperate with each other. When the electric push rod drives the sliding block to extend and retract, the lightweight transmission shaft in the annular magnetorheological fluid cavity can be driven to rotate synchronously, and the sliding block moves on the first support block, so that the lightweight transmission shaft can change the transmission angle while rotating, simulating different road conditions. In addition, when the lightweight drive shaft is clamped and fixed, multiple flexible pressure detection sheets installed on the flexible diaphragm on the inner surface of the annular magnetorheological fluid cavity will fit into its surface. During the change of the drive shaft angle, the pressure change values ​​at different angles during the detection process can be used to determine whether the drive shaft has problems such as local wear, abnormal assembly clearance, and force imbalance. The detection data is transmitted to the control device through the second electric slip ring assembly for analysis, providing an accurate basis for evaluating the performance and reliability of the lightweight drive shaft and meeting the efficient detection needs of the modern manufacturing industry.

[0020] When the lightweight transmission shaft is installed, one end of the present invention is against one side of the pressure block, cooperating with the expansion clamping of the flexible diaphragm in the annular magnetorheological fluid cavity to ensure that the transmission shaft is firmly installed. Turning the turning handle can drive the adjusting block at one end of the threaded adjusting rod to move in the thread of the elastic telescopic tube, squeezing the spring, and its rebound force is transmitted to the pressure block through the movable block and the movable rod, so that the pressure is tighter. When the annular magnetorheological fluid cavity and the lightweight transmission shaft rotate, the pressure block can rotate synchronously. At the same time, the movement of the adjusting block can change the position of the spring in the elastic telescopic tube, thereby adjusting the pressure position of the pressure block to meet the clamping requirements of lightweight transmission shafts of different lengths.

[0021] The pressure detection block of the present invention can detect the pressing pressure at the end of the lightweight transmission shaft during rotation and detection of different transmission angles, simulate the end pressure caused by changes in the transmission angle during use, and combine the detection data of the annular magnetorheological fluid cavity and the flexible pressure detection piece to achieve comprehensive and efficient detection of the lightweight transmission shaft, providing a comprehensive and accurate basis and solution for evaluating its performance and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the control device of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the first supporting block of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the lightweight transmission shaft of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding block of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the fixing frame of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the annular magnetorheological fluid cavity of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the gear ring of the present invention; Fig. 9 It is a schematic diagram of the cutaway three-dimensional structure of the annular magnetorheological fluid cavity of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the pressure adjustment mechanism of the present invention; Fig.11 It is a schematic diagram of the cross-sectional three-dimensional structure of the elastic telescopic tube of the present invention.

[0023] In the figure: 1, test table; 2, first support block; 3, second support block; 4, sliding groove; 5, sliding block; 6, electric push rod; 7, annular magnetorheological fluid cavity; 8, electromagnetic part; 9, first electric slip ring assembly; 10, fixed frame; 11, lightweight transmission shaft; 12, flexible diaphragm; 13, control device; 14, synchronous drive mechanism; 141, gear ring; 142, first gear; 143, second gear; 144, side frame; 145, rack; 15, flexible pressure detection sheet; 16, power connection part; 17, second electric slip ring assembly; 18, pressure adjustment mechanism; 181, elastic telescopic cylinder; 182, movable rod; 183, spring; 184, movable block; 185, pressure detection block; 186, pressure block; 187, threaded adjustment rod; 188, adjustment block; 189, handle; 1810, connecting arm. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the embodiments.

[0025] The following examples are used to illustrate the present invention, but they cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions. Simple improvements to the method of the present invention under the premise of the concept of the present invention belong to the scope of protection claimed in the present invention.

[0026] See also Figure 1-11 The present invention provides a lightweight transmission shaft detection device, including a detection platform 1, on which a first support block 2 and a second support block 3 are respectively installed, a sliding groove 4 is provided in the first support block 2, a sliding block 5 is slidably connected in the sliding groove 4, an electric push rod 6 is installed on the first support block 2, the bottom end of the electric push rod 6 is connected to the sliding block 5, and the sliding block 5 is driven to slide up and down in the sliding groove 4 under the driving force of the electric push rod 6; An annular magnetorheological fluid cavity 7 is rotatably arranged in the sliding block 5 and the second supporting block 3. The electromagnetic parts 8 on the two annular magnetorheological fluid cavities 7 are connected to the first electric slip ring assembly 9. The two first electric slip ring assemblies 9 are respectively installed on one side of the sliding block 5 and the second supporting block 3 through a fixing frame 10. A lightweight transmission shaft 11 is installed between the two annular magnetorheological fluid cavities 7. A flexible diaphragm 12 is arranged at the contact part between the annular magnetorheological fluid cavity 7 and the lightweight transmission shaft 11. A control device 13 is fixedly installed on one side of the second supporting block 3. The two first electric slip ring assemblies 9 are connected to the control device 13. The control The device 13 controls the electromagnetic part 8 on the annular magnetorheological fluid cavity 7 through the first electric slip ring assembly 9, and changes the magnetic field by adjusting the current intensity, so that the magnetorheological fluid changes from liquid to semi-solid, and its internal stress and volume will change. Due to the limited cavity space, the slight change in the volume of the magnetorheological fluid will be transmitted to the flexible diaphragm 12 through the internal pressure, causing the flexible diaphragm 12 to expand outward. The expansion of the flexible diaphragm 12 can make it fit more closely on the lightweight transmission shaft 11, so that the two ends of the lightweight transmission shaft 11 can be fixed, and the support stiffness and damping ratio thereof are dynamically adjusted. By detecting The first support block 2 and the second support block 3 on the platform 1 cooperate with the internal sliding groove 4, the sliding block 5 and the electric push rod 6 to realize flexible adjustment of the structure. The annular magnetorheological fluid cavity 7 cooperates with the first electric slip ring assembly 9, the flexible diaphragm 12 and the control device 13. According to actual needs, the magnetic field can be changed by adjusting the current intensity to change the state of the magnetorheological fluid, thereby dynamically adjusting the support stiffness and damping ratio of the lightweight transmission shaft 11. On the one hand, when simulating mild bumps, the stiffness and damping are appropriately increased to allow the lightweight transmission shaft 11 to be subjected to smaller, lower-frequency vibration impacts; when simulating severe ... On the other hand, the increased support stiffness and damping, in addition to achieving convenient clamping and fixing of the lightweight transmission shaft 11 through the expansion of the flexible diaphragm 12, will also cause the transmission shaft to withstand greater stress under vibration impact and accumulate fatigue damage more quickly. By gradually increasing the degree of support stiffness and damping for testing, the performance of the transmission shaft at different fatigue accumulation rates can be effectively observed, providing a basis for evaluating its fatigue life and reliability, and meeting the needs of modern manufacturing for fast and efficient testing.

[0027] like Figure 1 As shown, a synchronous driving mechanism 14 is provided on one side of the second supporting block 3 .

[0028] like Figure 4 and Figure 5As shown, the synchronous drive mechanism 14 includes a gear ring 141 installed on one side of the annular magnetorheological fluid cavity 7 on the second support block 3, a first gear 142 is rotatably provided on one side of the sliding block 5, the first gear 142 is meshed with the gear ring 141, a second gear 143 is fixedly installed on one side of the first gear 142, the tooth diameters of the second gear 143 and the gear ring 141 are smaller than the first gear 142, a rack 145 is fixedly installed on one side of the second support block 3 through a side frame 144, the second gear 143 and the rack 145 are meshed with each other, when the sliding block 5 is driven to retract, the transmission between the gear ring 141 and the rack 145 will drive the lightweight transmission shaft 11 clamped by the magnetic fluid in the annular magnetorheological fluid cavity 7 to rotate synchronously.

[0029] like Figures 6 to 9 As shown, a plurality of flexible pressure detection sheets 15 are installed on the flexible diaphragm 12 on the inner surface of each annular magnetorheological fluid cavity 7 . The plurality of flexible pressure detection sheets 15 are generally annular in shape and are connected to a second electric slip ring assembly 17 via an electrical connection portion 16 .

[0030] like Figures 6 to 9 As shown, the second electric slip ring assembly 17 is connected to the control device 13, and each second electric slip ring assembly 17 is fixedly mounted on the fixing frame 10 on the corresponding side. The pressure detection data of the plurality of flexible pressure detection sheets 15 are uniformly transmitted to the control device 13, and the data is analyzed by the control device 13. In the synchronous drive mechanism 14, the gear ring 141, the first gear 142, the second gear 143 and the rack 145 cooperate with each other. When the electric push rod 6 drives the sliding block 5 to extend and retract, the lightweight transmission shaft 11 in the annular magnetorheological fluid cavity 7 can be driven to rotate synchronously, and the sliding block 5 moves on the first support block 2, which can make the lightweight transmission shaft 1 1 changes the transmission angle while rotating to simulate different road conditions. In addition, when the lightweight transmission shaft 11 is clamped and fixed, the multiple flexible pressure detection sheets 15 installed on the flexible diaphragm 12 on the inner surface of the annular magnetorheological fluid cavity 7 will fit its surface. During the change of the transmission shaft angle, the pressure change values ​​at different angles during the detection process can be used to determine whether the transmission shaft has problems such as local wear, abnormal assembly clearance, and unbalanced force. The detection data is transmitted to the control device 13 through the second electric slip ring assembly 17 for analysis, providing an accurate basis for evaluating the performance and reliability of the lightweight transmission shaft 11 and meeting the efficient detection needs of the modern manufacturing industry.

[0031] like Figure 1 As shown, a pressure regulating mechanism 18 is disposed on one side of the two annular magnetorheological fluid cavities 7 .

[0032] like Fig.10 and Fig.11As shown, the pressure adjustment mechanism 18 includes an elastic telescopic tube 181 and a movable rod 182 that can be retracted at one end of the elastic telescopic tube 181, a spring 183 is arranged in the elastic telescopic tube 181, and a movable block 184 sliding in the elastic telescopic tube 181 is fixedly arranged at one end of the movable rod 182, and one side of the spring 183 presses against one side of the movable block 184.

[0033] like Figures 4 to 11 As shown, a pressure detection block 185 is fixedly provided at the other end of the movable rod 182, and a pressure block 186 is rotatably provided on one side of the pressure detection block 185. One side of the pressure block 186 is pressed against one end of the installed lightweight transmission shaft 11, and cooperates with the expansion clamping of the flexible diaphragm 12 in the annular magnetorheological fluid cavity 7, so that the lightweight transmission shaft 11 can be kept relatively stably installed.

[0034] like Fig.11 As shown, one side of each elastic telescopic tube 181 is threadedly connected with a threaded adjustment rod 187, one end of the threaded adjustment rod 187 is rotatably provided with an adjustment block 188 that slides in the elastic telescopic tube 181, and the other end of the spring 183 is against one side of the adjustment block 188.

[0035] like Figure 5 As shown, a turning handle 189 is fixedly provided on the outer end of the threaded adjustment rod 187 , and the outer part of the elastic telescopic cylinder 181 is fixedly connected to one side of the sliding block 5 through a connecting arm 1810 .

[0036] The working principle and use process of the present invention are as follows: firstly, a lightweight transmission shaft 11 is placed between two annular magnetorheological fluid cavities 7, and the first electric slip ring assembly 9 is adjusted by the control device 13 to change the current intensity of the electromagnetic part 8 in the annular magnetorheological fluid cavity 7, so that the state of the magnetorheological fluid changes, and the flexible diaphragm 12 expands to clamp the lightweight transmission shaft 11, and dynamically adjusts the support stiffness and damping ratio, and the turning handle 189 is turned to adjust the pressure of the spring 183 through the threaded adjustment rod 187, so that the pressing block 186 presses against the lightweight transmission shaft 11 to adapt to the clamping of transmission shafts of different lengths; During the detection process, the electric push rod 6 is first started, and its driving force causes the sliding block 5 to slide up and down in the sliding groove 4 of the first support block 2. This sliding action triggers the operation of the synchronous drive mechanism 14, which is specifically manifested as follows: the sliding block 5 moves to drive the first gear 142 thereon, and the first gear 142 is meshed with the gear ring 141. At the same time, the first gear 142 drives the second gear 143, and the second gear 143 is meshed with the rack 145, thereby driving the lightweight transmission shaft 11 in the annular magnetorheological fluid cavity 7 to rotate synchronously and change the transmission angle, so as to realize the simulation of different road conditions; During this period, the first electric slip ring assembly 9 is adjusted by the control device 13 to change the current intensity of the electromagnetic part 8 of the annular magnetorheological fluid cavity 7, and the magnetorheological fluid changes from liquid to semi-solid, and the internal stress and volume change, which pushes the flexible diaphragm 12 to expand, tightly fit and fix the lightweight transmission shaft 11, and dynamically adjust its support stiffness and damping ratio, accurately simulating the vibration impact under different degrees of bumpy road conditions; The flexible pressure detection sheet 15 on the flexible diaphragm 12 in the annular magnetorheological fluid cavity 7 detects the surface pressure of the transmission shaft in real time, and the pressure detection block 185 detects the pressing pressure at the end of the transmission shaft. Combined with the detection data of the annular magnetorheological fluid cavity 7 and the flexible pressure detection sheet 15, these data are transmitted to the control device 13 through the power connection part 16 and the second electric slip ring assembly 17. The control device 13 analyzes the collected data, comprehensively evaluates the performance of the lightweight transmission shaft 11 under different working conditions, and provides a strong basis for its quality detection and optimization design.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightweight transmission shaft detection device, comprising a detection platform (1), wherein a first support block (2) and a second support block (3) are respectively mounted on the detection platform (1), characterized in that: A sliding groove (4) is provided in the first support block (2), a sliding block (5) is slidably connected in the sliding groove (4), and an electric push rod (6) is installed on the first support block (2); An annular magnetorheological fluid cavity (7) is rotatably disposed in both the sliding block (5) and the second support block (3); the electromagnetic parts (8) on the two annular magnetorheological fluid cavities (7) are connected to a first electric slip ring assembly (9); the two first electric slip ring assemblies (9) are respectively mounted on one side of the sliding block (5) and the second support block (3) via a fixing frame (10); and a lightweight transmission shaft (11) is mounted between the two annular magnetorheological fluid cavities (7); A flexible diaphragm (12) is provided at a contact portion between the annular magnetorheological fluid cavity (7) and the lightweight transmission shaft (11); a control device (13) is fixedly mounted on one side of the second support block (3); and the two first electric slip ring assemblies (9) are connected to the control device (13).

2. A lightweight transmission shaft detection device according to claim 1, characterized in that: A synchronous driving mechanism (14) is provided on one side of the second supporting block (3).

3. A lightweight transmission shaft detection device according to claim 2, characterized in that: The synchronous drive mechanism (14) comprises a gear ring (141) mounted on one side of the annular magnetorheological fluid cavity (7) on the second support block (3); a first gear (142) is rotatably arranged on one side of the sliding block (5); the first gear (142) meshes with the gear ring (141); a second gear (143) is fixedly mounted on one side of the first gear (142); the tooth diameters of the second gear (143) and the gear ring (141) are both smaller than those of the first gear (142); a rack (145) is fixedly mounted on one side of the second support block (3) via a side frame (144); the second gear (143) and the rack (145) mesh with each other; When the sliding block (5) is driven to extend and retract, the transmission between the gear ring (141) and the rack (145) drives the lightweight transmission shaft (11) clamped by the magnetic fluid in the annular magnetorheological fluid cavity (7) to rotate synchronously.

4. A lightweight transmission shaft detection device according to claim 1, characterized in that: A plurality of flexible pressure detection sheets (15) are mounted on the flexible diaphragm (12) on the inner surface of each annular magnetorheological fluid cavity (7); the plurality of flexible pressure detection sheets (15) are generally annular in shape; and the plurality of flexible pressure detection sheets (15) are connected to a second electric slip ring assembly (17) via an electrical connection portion (16).

5. A lightweight transmission shaft detection device according to claim 4, characterized in that: The second electric slip ring assembly (17) is connected to the control device (13), and each of the second electric slip ring assemblies (17) is fixedly mounted on a fixing frame (10) on a corresponding side. The pressure detection data of the plurality of flexible pressure detection sheets (15) are uniformly transmitted to the control device (13), and the data is analyzed by the control device (13).

6. A lightweight transmission shaft detection device according to claim 1, characterized in that: A pressure adjustment mechanism (18) is provided on one side of each of the two annular magnetorheological fluid cavities (7).

7. A lightweight transmission shaft detection device according to claim 6, characterized in that: The pressure regulating mechanism (18) comprises an elastic telescopic tube (181) and a movable rod (182) capable of being telescopically moved at one end of the elastic telescopic tube (181); a spring (183) is arranged in the elastic telescopic tube (181); a movable block (184) sliding in the elastic telescopic tube (181) is fixedly arranged at one end of the movable rod (182); one side of the spring (183) is pressed against one side of the movable block (184).

8. A lightweight transmission shaft detection device according to claim 7, characterized in that: A pressure detection block (185) is fixedly provided at the other end of the movable rod (182), and a pressure block (186) is rotatably provided on one side of the pressure detection block (185). One side of the pressure block (186) is pressed against one end of the installed lightweight transmission shaft (11) and cooperates with the expansion clamping of the flexible diaphragm (12) in the annular magnetorheological fluid cavity (7), so that the lightweight transmission shaft (11) can be kept relatively stably installed.

9. A lightweight transmission shaft detection device according to claim 7, characterized in that: A threaded adjustment rod (187) is threadedly connected to one side of each elastic telescopic cylinder (181); an adjustment block (188) that slides inside the elastic telescopic cylinder (181) is rotatably provided at one end of the threaded adjustment rod (187); and the other end of the spring (183) abuts against one side of the adjustment block (188).

10. A lightweight transmission shaft detection device according to claim 9, characterized in that: A turning handle (189) is fixedly provided on the outer end of the threaded adjustment rod (187), and the outer portion of the elastic telescopic cylinder (181) is fixedly connected to one side of the sliding block (5) via a connecting arm (1810).

Images