A multifunctional testing system and its axial force and durability testing method

Abstract

The present invention relates to the technical field of reliability testing of vehicle shaft parts, and in particular, to a multifunctional testing system and an axial force and durability testing method thereof. The multifunctional testing system comprises a test bench, a support assembly, a loading test assembly, a transmission assembly, a first test shaft and a second test shaft. The first test shaft comprises a first shaft body, a first inner star wheel and a first outer star wheel, the first inner star wheel is transmission-connected to a first motor, and the first motor applies a first torque to the first test shaft. The second inner star wheel is transmission-connected to the first outer star wheel through a transmission assembly. The second outer star wheel is transmission-connected to the second motor. The second motor applies a preset speed and a second torque to the second test shaft. The first sensing unit is detachably connected to the output shaft of the second motor. The multifunctional testing system is applied to an axial force testing method and a durability testing method. In this way, the problem of low utilization rate of reliability testing equipment for shaft parts is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of reliability testing of vehicle axle parts, and in particular to a multifunctional testing system and an axial force and durability testing method thereof. Background Art

[0002] Shaft parts in vehicle parts, such as drive shafts and transmission shafts, often need to undergo multiple reliability tests such as axial force, sliding resistance, durability, and mud damage to ensure stable operation and long-term load in complex and changing road environments, thereby ensuring product quality. To complete these tests, at least two independently controlled motors are required to provide precise power output, and a flexibly adjustable longitudinal movable base is also required to ensure performance evaluation of the shaft at different swing angles. However, since the test system involves many parts, a single test platform is often difficult to cover all test items.

[0003] Therefore, common shaft test systems are only used for testing a specific performance indicator, such as axial force or durability. This situation not only increases the equipment investment cost of enterprises, but also makes it difficult to meet the needs of rapid product testing due to long test cycles and low efficiency. Especially in today's rapidly developing automotive industry, the rapid and efficient detection of a large number of shaft parts has become a key factor restricting the improvement of production capacity. Therefore, exploring integrated and intelligent shaft parts testing solutions has become an important issue that the industry needs to solve urgently. Summary of the invention

[0004] In order to solve the problem of low utilization rate of reliability test equipment for shaft parts, the present invention provides a multifunctional test system and an axial force and durability test method thereof.

[0005] In a first aspect, the present invention provides a multifunctional test system, the multifunctional test system comprising:

[0006] Test bench;

[0007] A support assembly, the support assembly comprising a first support unit and a second support unit; the first support unit and the second support unit are respectively detachably connected to the test bench; the first support unit and the second support unit can move relative to each other along a preset direction;

[0008] A loading test assembly, the loading test assembly comprising a first motor, a second motor and a first sensor unit; the first motor is detachably connected to the first support unit; the second motor is detachably connected to the first support unit; the first sensor unit is detachably connected to the test bench;

[0009] a transmission assembly, wherein the transmission assembly is detachably connected to the second supporting unit;

[0010] A first test shaft, the first test shaft comprising a first shaft body, a first inner star wheel and a first outer star wheel; one end of the first shaft body is detachably connected to the first inner star wheel, and the other end is detachably connected to the first outer star wheel; the first inner star wheel is transmission-connected to the first motor; the first motor applies a first torque to the first test shaft; the preset direction has an angle with the first shaft body;

[0011] The second test shaft comprises a second shaft body, a second inner star wheel and a second outer star wheel; one end of the second shaft body is detachably connected to the second inner star wheel, and the other end is detachably connected to the second outer star wheel; the second inner star wheel is transmission-connected to the first outer star wheel through the transmission assembly; the second outer star wheel is transmission-connected to the second motor; the second motor applies a preset speed and a second torque to the second test shaft; the first torque and the second torque are in opposite directions; the first sensing unit is detachably connected to the output shaft of the second motor; the first sensing unit detects axial force or torque; the first shaft body is parallel to the second shaft body.

[0012] In some embodiments, a vibration component includes a vibration part and a vibration cylinder; the vibration cylinder is detachably connected to the second support unit; the vibration part is detachably connected to the piston rod of the vibration cylinder; the vibration part applies a vibration force of a preset frequency to the transmission component; the piston rod of the vibration cylinder is perpendicular to the sliding direction of the second support unit.

[0013] In some embodiments, the loading test assembly further includes a second sensing unit, which is detachably connected to the output shaft of the first motor; the second sensing unit detects axial force.

[0014] In some embodiments, the loading test assembly further includes two first fixtures and two second fixtures; the first fixtures are respectively adapted to the first inner star wheel and the second inner star wheel; the second fixtures are respectively adapted to the first outer star wheel and the second outer star wheel;

[0015] One of the first clamps is detachably connected to the output shaft of the first motor, and the other first clamp is detachably connected to the transmission assembly; the first motor is transmission-connected to the first inner star gear through the connected first clamp; the transmission assembly is transmission-connected to the second inner star gear through the connected first clamp;

[0016] One of the second clamps is detachably connected to the output shaft of the second motor, and the other second clamp is detachably connected to the transmission assembly; the second motor is transmission-connected to the second outer planetary wheel via the connected second clamp; and the transmission assembly is transmission-connected to the first outer planetary wheel via the connected second clamp.

[0017] In some embodiments, a mud test assembly includes an environmental chamber, a mud pump, a hot air pipe, a heating motor and a temperature sensing unit; the mud test assembly is provided with four groups; the first inner star wheel, the first outer star wheel, the second inner star wheel and the second outer star wheel respectively correspond to one mud test assembly; the first inner star wheel, the first outer star wheel, the second inner star wheel and the second outer star wheel are respectively located in the corresponding environmental chamber; the mud pump is detachably connected to the environmental chamber; the hot air pipe is detachably connected to the environmental chamber; the heating motor is detachably connected to the hot air pipe; the temperature sensing unit is detachably connected to the environmental chamber.

[0018] In a second aspect, the present invention provides an axial force test method, which is applied to any of the multifunctional test systems in the first aspect, and the axial force test method comprises:

[0019] Step S10, based on the first swing angle of the first test shaft and the second swing angle of the second test shaft being positioned, controlling the first motor to apply a first torque to the first inner star wheel, and controlling the second motor to apply a preset speed and a second torque to the second outer star wheel;

[0020] The first shaft body has the same angle with the first inner star wheel and the first outer star wheel, and both are the first swing angles; the second shaft body has the same angle with the second inner star wheel and the second outer star wheel, and both are the second swing angles;

[0021] Step S20, based on the first motor applying the first torque to the first inner star wheel, the second motor applying the preset speed and the second torque to the second outer star wheel, and accumulating the first loading time;

[0022] Step S30: acquiring first axial force data of a first sensing unit based on the first loading duration reaching a first preset duration.

[0023] In some embodiments, step S40, based on the first axial force data, accumulating a first number of tests;

[0024] Step S50, adjusting the first swing angle and the second swing angle based on that the first test number is less than a first preset number;

[0025] Step S60, based on the completion of adjustment of the first swing angle and the second swing angle, looping from step S10 to step S50; until the first test number reaches the first preset number, the loop ends.

[0026] In some embodiments, step S70, based on the end of the cycle in step S60, replacing the installation positions of the first test shaft and the second test shaft;

[0027] Step S80: based on the completion of the position replacement of the first test axis and the second test axis, repeat the steps S10 to S60.

[0028] In a second aspect, the present invention provides a durability test method, which is applied to any of the multifunctional test systems in the first aspect, and the durability test method comprises:

[0029] Step S100, based on the first swing angle of the first test shaft and the second swing angle of the second test shaft being positioned, controlling the first motor to apply a first torque to the first inner star wheel, and controlling the second motor to apply a preset speed and a second torque to the second outer star wheel;

[0030] The first shaft body has the same angle with the first inner star wheel and the first outer star wheel, and both are the first swing angles; the second shaft body has the same angle with the second inner star wheel and the second outer star wheel, and both are the second swing angles;

[0031] Step S200, based on the first motor applying the first torque to the first inner star wheel, the second motor applying the preset speed and the second torque to the second outer star wheel, and accumulating a second loading time;

[0032] Step S300: acquiring damage data of the first test shaft and the second test shaft based on the second loading duration reaching a second preset duration.

[0033] In some embodiments, step S101, based on the first swing angle of the first test axis and the second swing angle of the second test axis being positioned, the second support unit is controlled to reciprocate;

[0034] Step S102: Based on the reciprocating movement of the second support unit, the first motor is controlled to apply a first torque to the first inner star wheel, and the second motor is controlled to apply a preset speed and a second torque to the second outer star wheel.

[0035] In order to solve the problem of low utilization rate of reliability test equipment for shaft parts, the present invention has the following advantages:

[0036] The present invention can perform durability tests on the first test shaft and the second test shaft at the same time. When only the first sensing unit is provided, the first test shaft can be used as an auxiliary shaft to perform axial force and sliding resistance tests on the second test shaft. After the test, the positions of the first test shaft and the second test shaft can be replaced to perform axial force and sliding resistance tests on the second test shaft. Among them, the sensing unit can be a six-component force sensor that can detect both axial force and torque, so that different tests can be performed with the same sensor. The same device can perform multiple tests, which improves the utilization rate of reliability test equipment for shaft components and increases production capacity. At the same time, the present invention has two workstations when performing durability tests, and the test efficiency is relatively high.

[0037] A second sensor unit is added to the output shaft of the first motor, so that the first test shaft and the second test shaft can be subjected to a durability test, an axial force test or a sliding resistance test simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of a multifunctional test system according to an embodiment is shown;

[0039] Figure 2 A schematic diagram of a transmission assembly of a multifunctional test system according to an embodiment is shown;

[0040] Figure 3 A schematic diagram of the axial force testing method according to an embodiment is shown;

[0041] Figure 4 A schematic flow chart of a durability testing method according to an embodiment is shown.

[0042] Figure numerals: 10 test bench; 20 support assembly; 21 first support unit; 22 second support unit; 30 loading test assembly; 31 first motor; 32 second motor; 33 first sensing unit; 34 second sensing unit; 40 transmission assembly; 41 gear box; 42 first gear; 43 second gear; 50 first test shaft; 51 first shaft body; 52 first inner star wheel; 53 first outer star wheel; 60 second test shaft; 61 second shaft body; 62 second inner star wheel; 63 second outer star wheel; 70 vibration assembly; 71 vibration part; 72 vibration cylinder; 80 mud test assembly; 81 environmental chamber; 82 mud pump; 83 hot air pipe; 84 heating motor; 85 temperature sensing unit. DETAILED DESCRIPTION

[0043] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0044] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0045] Shaft parts in vehicle components, such as drive shafts and transmission shafts, often need to undergo multiple reliability tests such as axial force and durability to ensure the stability and durability of vehicle operation. Among them, to complete all tests, at least one speed motor is required to provide the shaft with speed, and a load motor is required to provide torque. Common shaft test systems only test one characteristic, such as axial force or durability. One device has high cost, slow detection speed, and low test efficiency, and it is difficult to meet the detection needs of a large number of shaft parts in the market.

[0046] This embodiment discloses a multifunctional test system. Figure 1As shown, the multifunctional test system may include: a test bench 10, a support assembly 20, a load test assembly 30, a transmission assembly 40, a first test shaft 50, and a second test shaft 60. The support assembly 20 may include a first support unit 21 and a second support unit 22, the first support unit 21 and the second support unit 22 are respectively detachably connected to the test bench 10, and the first support unit 21 and the second support unit 22 can move relative to each other along a preset direction.

[0047] The loading test assembly 30 may include a first motor 31, a second motor 32 and a first sensor unit 33. The first motor 31 is detachably connected to the first support unit 21, and can drive the load with a large torque to apply torque to the shaft; the second motor 32 is detachably connected to the first support unit 21, and can provide a stable rotation speed by rotating the shaft. The first sensor unit 33 is detachably connected to the test bench 10. The first sensor unit 33 may be a six-component force sensor that can detect axial force, sliding resistance and torque, so that the same sensor can be used to perform different tests.

[0048] like Figure 2 As shown, the transmission assembly 40 is detachably connected to the second support unit 22, and the transmission assembly 40 may include a gear box 41, a first gear 42, and a second gear 43. The first gear 42 and the second gear 43 are meshed inside the gear box 41, the first gear 42 is transmission-connected to one end of the first test shaft 50, and the second gear 43 is transmission-connected to one end of the second test shaft 60, so that the first test shaft 50 and the second test shaft 60 are transmission-connected.

[0049] The first test shaft 50 includes a first shaft body 51, a first inner star wheel 52 and a first outer star wheel 53. One end of the first shaft body 51 is detachably connected to the first inner star wheel 52, and the other end is detachably connected to the first outer star wheel 53. The first inner star wheel 52 is transmission-connected to the first motor 31, and the first motor 31 can apply a first torque to the first test shaft 50. The preset direction has an angle with the first shaft body 51.

[0050] The second test shaft 60 includes a second shaft body 61, a second inner star wheel 62, and a second outer star wheel 63. One end of the second shaft body 61 is detachably connected to the second inner star wheel 62, and the other end is detachably connected to the second outer star wheel 63. The second inner star wheel 62 is connected to the first outer star wheel 53 through the transmission assembly 40. Figure 1 and Figure 2 As shown, the second outer planetary wheel 63 is connected to the second motor 32 in a transmission manner. The second motor 32 can apply a preset speed and a second torque to the second test shaft 60, and the first torque and the second torque are in opposite directions. The first sensor unit 33 is detachably connected to the output shaft of the second motor 32, and the first sensor unit 33 can detect axial force or torque. The first shaft body 51 is parallel to the second shaft body 61.

[0051] In some embodiments, the first test shaft 50 and the second test shaft 60 can be drive shafts. Based on the structural characteristics of the drive shaft, the drive shaft includes a drive shaft body and an inner star wheel and an outer star wheel connected to both ends of the drive shaft body. In the inner star wheel and the outer star wheel of the drive shaft, the universal joint type of the inner star wheel can allow the drive shaft body to move slightly axially relative to the inner star wheel, while the universal joint type of the outer star wheel can only achieve rotation but not axial movement.

[0052] In other embodiments, the first test shaft 50 and the second test shaft 60 may be transmission shafts. Based on the structural characteristics of the transmission shaft, the universal joint types of the inner and outer star wheels of the transmission shaft do not allow axial movement, so when the test shaft is a transmission shaft, it needs to be set as a two-section shaft structure connected by splines to allow a slight axial movement.

[0053] By moving the second support unit 22 to a set position in a preset direction, the first test shaft 50 and the second test shaft 60 can both be at a set deflection angle. When the first motor 31 and the second motor 32 are both running, the first test shaft 50 serves as an auxiliary shaft, and the first sensor unit 33 can measure the axial force on the second test shaft. In addition, by limiting the motor running time, the durability of the first test shaft 50 and the second test shaft 60 at different deflection angles can be measured.

[0054] In some embodiments, Figure 1 As shown, the multifunctional test system may further include a vibration assembly 70, and the vibration assembly 70 includes a vibration part 71 and a vibration cylinder 72. The vibration cylinder 72 is detachably connected to the second support unit 22 and can move synchronously with the second support unit 22. The vibration part 71 is detachably connected to the piston rod of the vibration cylinder 72, so that the vibration part 71 can apply a vibration force of a preset frequency to the transmission assembly 40. The piston rod of the vibration cylinder 72 is perpendicular to the sliding direction of the second support unit 22, and the vibration force can be transmitted to the second inner star wheel 62 to cause it to slide axially, so that the sliding resistance of the second test shaft 60 can be measured by the first sensor unit 33. In addition, according to the position of the second support unit 22, the sliding resistance of the second test shaft 60 at different deflection angles can be measured.

[0055] In another embodiment, if Figure 1 As shown, the loading test assembly 30 may further include a second sensor unit 34, which is detachably connected to the output shaft of the first motor 31. The second sensor unit 34 is located at one end of the first test shaft 50, and can detect the axial force and sliding resistance of the first test shaft 50. Therefore, when detecting the axial force and sliding resistance, the first test shaft 50 and the second test shaft 60 can be detected synchronously, greatly improving the test efficiency of the axial force and sliding resistance.

[0056] In some embodiments, Figure 1 and Figure 2 As shown, the loading test assembly 30 may also include two first fixtures and two second fixtures. The first fixtures may be adapted to the first inner star wheel 52 and the second inner star wheel 62 respectively, and the second fixtures may be adapted to the first outer star wheel 53 and the second outer star wheel 63 respectively.

[0057] One of the first clamps is detachably connected to the output shaft of the first motor 31, and the other first clamp is detachably connected to the transmission assembly 40. The first motor 31 is transmission-connected to the first inner star wheel 52 through the connected first clamps, and the transmission assembly 40 is transmission-connected to the second inner star wheel 62 through the connected first clamps.

[0058] One of the second clamps is detachably connected to the output shaft of the second motor 32, and the other second clamp is detachably connected to the transmission assembly 40. The second motor 32 is transmission-connected to the second outer planetary wheel 63 through the connected second clamp, and the transmission assembly 40 is transmission-connected to the first outer planetary wheel 53 through the connected second clamp.

[0059] When testing the same type of drive shaft, there is no need to disassemble the fixture. You only need to install the drive shaft according to the predetermined direction of the fixture so that the second outer star wheel 63 is connected to the output shaft of the second motor 32, so that the first sensor unit 33 can detect the torque applied to the second test shaft 60, thereby speeding up the test efficiency.

[0060] In some embodiments, Figure 1 As shown, the multifunctional test system may further include a mud test assembly 80, which includes an environmental chamber 81, a mud pump 82, a hot air pipe 83, a heating motor 84, and a temperature sensing unit 85. The mud test assembly 80 is provided with four groups, and the first inner star wheel 52, the first outer star wheel 53, the second inner star wheel 62, and the second outer star wheel 63 correspond to one mud test assembly 80 respectively. The first inner star wheel 52, the first outer star wheel 53, the second inner star wheel 62, and the second outer star wheel 63 are respectively located in the corresponding environmental chamber 81. The mud pump 82 is detachably connected to the environmental chamber 81, the hot air pipe 83 is detachably connected to the environmental chamber 81, the heating motor 84 is detachably connected to the hot air pipe 83, and the temperature sensing unit 85 is detachably connected to the environmental chamber 81.

[0061] The first inner star wheel 52, the first outer star wheel 53, the second inner star wheel 62 and the second outer star wheel 63 are placed in the corresponding environmental box 81 respectively, and the environmental box 81 is controlled to test the durability of the first test shaft 50 and the second test shaft 60 in the environment with mud damage. In addition, by controlling the four mud pumps 82 and the heating motor 84, different environmental parameters can be set in the four environmental boxes 81, thereby increasing the environmental parameter range of the test and improving the test efficiency.

[0062] In this embodiment, an axial force testing method is provided. The axial force testing method is applied to any multifunctional testing system in the above embodiments. The axial force testing method may include steps S10 to S30. Figure 3 The steps are described in detail as follows:

[0063] Step S10, after the first swing angle of the first test shaft 50 and the second swing angle of the second test shaft 60 are positioned, that is, the second moving unit is driven to move the set value along the preset direction, and one end of the first test shaft 50 and the second test shaft 60 swings synchronously to the first set value, the first motor 31 can be controlled to apply the first torque to the first inner star wheel 52, and the second motor 32 can be controlled to apply the preset speed and the second torque to the second outer star wheel 63.

[0064] The first shaft body 51 has equal angles with the first inner star wheel 52 and the first outer star wheel 53 , and both are first swing angles; the second shaft body 61 has equal angles with the second inner star wheel 62 and the second outer star wheel 63 , and both are second swing angles.

[0065] Step S20 , after the first motor 31 applies the first torque to the first inner star wheel 52 , and the second motor 32 applies the preset speed and the second torque to the second outer star wheel 63 , the first loading time is accumulated.

[0066] Step S30, after the first loading time reaches the first preset time, the first axial force data of the first sensor unit 33 may be obtained.

[0067] In another embodiment, in step S20, after the first motor 31 applies the first torque to the first inner star wheel 52 and the second motor 32 applies the preset speed and the second torque to the second outer star wheel 63, the vibration cylinder 72 can be driven to operate, the vibration part 71 applies a vibration force of a preset frequency to the transmission assembly 40, and the first loading time is accumulated.

[0068] Step S30, after the first loading time reaches the first preset time, the first sliding resistance data of the first sensor unit 33 can be obtained.

[0069] In some embodiments, the axial force testing method may further include S40 to S60, and each step is described in detail as follows:

[0070] Step S40: After obtaining the first axial force data, the first number of tests may be accumulated.

[0071] Step S50, when the first test number is less than the first preset number, the first swing angle and the second swing angle can be adjusted by controlling the second moving unit to reach a second set value.

[0072] Step S60, after the first swing angle and the second swing angle are adjusted, looping steps S10 to S50 until the first test number reaches a first preset number, and then the loop ends.

[0073] During the cycle, axial force data under different swing angle states equal to the first preset number of times can be obtained.

[0074] In some embodiments, the axial force test method may further include S70 to S80, and each step is described in detail as follows:

[0075] Step S70 , after the cycle in step S60 is completed, the installation positions of the first test shaft 50 and the second test shaft 60 may be replaced.

[0076] Step S80, after the positions of the first test shaft 50 and the second test shaft 60 are replaced, steps S10 to S60 are repeated.

[0077] Before the position is changed, the first sensor unit 33 measures the axial force data of the second test shaft 60 , and after the position is changed, the axial force data of the first test shaft 50 can be obtained.

[0078] In this embodiment, a durability testing method is provided. The durability testing method is applied to any multifunctional testing system in the above embodiments. The durability testing method may include steps S100 to S300. Figure 4 As shown, each step is described in detail as follows:

[0079] In step S100, after the first swing angle of the first test shaft 50 and the second swing angle of the second test shaft 60 are positioned, the second moving unit is driven to move the set value in a direction perpendicular to the first test shaft 50, and one end of the first test shaft 50 and the second test shaft 60 are synchronously swung to the third set value, the first motor 31 can be controlled to apply a first torque to the first inner star wheel 52, and the second motor 32 can be controlled to apply a preset speed and a second torque to the second outer star wheel 63.

[0080] The first shaft body 51 has equal angles with the first inner star wheel 52 and the first outer star wheel 53 , and both are first swing angles; the second shaft body 61 has equal angles with the second inner star wheel 62 and the second outer star wheel 63 , and both are second swing angles.

[0081] Step S200, after the first motor 31 applies the first torque to the first inner star wheel 52, and the second motor 32 applies the preset speed and the second torque to the second outer star wheel 63, the second loading time is accumulated. In order to test the durability, the second loading time can be longer, such as 400h, 600h. During the detection process, the torque applied to the second test shaft 60 can be monitored in real time by the first sensor unit 33.

[0082] Step S300, after the second loading time reaches the second preset time, the damage data of the first test shaft 50 and the second test shaft 60 are obtained.

[0083] In some embodiments, the durability test method may further include S101 to S102, each of which is described in detail as follows:

[0084] Step S101, after the first swing angle of the first test shaft 50 and the second swing angle of the second test shaft 60 are positioned, the second support unit 22 can be controlled to reciprocate in a preset direction, so that a durability test of the shaft under reciprocating swing can be performed.

[0085] Step S102 , after controlling the second support unit 22 to reciprocate, controlling the first motor 31 to apply a first torque to the first inner star wheel 52 , and controlling the second motor 32 to apply a preset speed and a second torque to the second outer star wheel 63 .

[0086] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A multifunctional test system, characterized in that: The multifunctional test system comprises: Test bench; A support assembly, the support assembly comprising a first support unit and a second support unit; the first support unit and the second support unit are respectively detachably connected to the test bench; the first support unit and the second support unit can move relative to each other along a preset direction; A loading test assembly, the loading test assembly comprising a first motor, a second motor and a first sensor unit; the first motor is detachably connected to the first support unit; the second motor is detachably connected to the first support unit; the first sensor unit is detachably connected to the test bench; a transmission assembly, the transmission assembly being detachably connected to the second supporting unit; A first test shaft, the first test shaft comprising a first shaft body, a first inner star wheel and a first outer star wheel; one end of the first shaft body is detachably connected to the first inner star wheel, and the other end is detachably connected to the first outer star wheel; the first inner star wheel is transmission-connected to the first motor; the first motor applies a first torque to the first test shaft; the preset direction has an angle with the first shaft body; The second test shaft comprises a second shaft body, a second inner star wheel and a second outer star wheel; one end of the second shaft body is detachably connected to the second inner star wheel, and the other end is detachably connected to the second outer star wheel; the second inner star wheel is transmission-connected to the first outer star wheel through the transmission assembly; the second outer star wheel is transmission-connected to the second motor; the second motor applies a preset speed and a second torque to the second test shaft; the first torque and the second torque are in opposite directions; the first sensor unit is detachably connected to the output shaft of the second motor; the first sensor unit detects axial force or torque; the first shaft body is parallel to the second shaft body; A vibration assembly, the vibration assembly includes a vibration part and a vibration cylinder; the vibration cylinder is detachably connected to the second support unit; the vibration part is detachably connected to the piston rod of the vibration cylinder; the vibration part applies a vibration force of a preset frequency to the transmission assembly; the piston rod of the vibration cylinder is perpendicular to the sliding direction of the second support unit; The loading test assembly also includes a second sensing unit, which is detachably connected to the output shaft of the first motor; the second sensing unit detects axial force.

2. A multifunctional test system according to claim 1, characterized in that: The loading test assembly further includes two first fixtures and two second fixtures; the first fixtures are respectively adapted to the first inner star wheel and the second inner star wheel; the second fixtures are respectively adapted to the first outer star wheel and the second outer star wheel; One of the first clamps is detachably connected to the output shaft of the first motor, and the other first clamp is detachably connected to the transmission assembly; the first motor is transmission-connected to the first inner star gear through the connected first clamp; the transmission assembly is transmission-connected to the second inner star gear through the connected first clamp; One of the second clamps is detachably connected to the output shaft of the second motor, and the other second clamp is detachably connected to the transmission assembly; the second motor is transmission-connected to the second outer planetary wheel via the connected second clamp; and the transmission assembly is transmission-connected to the first outer planetary wheel via the connected second clamp.

3. A multifunctional test system according to claim 1, characterized in that: A mud test assembly, comprising an environmental chamber, a mud pump, a hot air pipe, a heating motor and a temperature sensing unit; the mud test assembly is provided with four groups; the first inner star wheel, the first outer star wheel, the second inner star wheel and the second outer star wheel respectively correspond to one mud test assembly; the first inner star wheel, the first outer star wheel, the second inner star wheel and the second outer star wheel are respectively located in the corresponding environmental chamber; the mud pump is detachably connected to the environmental chamber; the hot air pipe is detachably connected to the environmental chamber; the heating motor is detachably connected to the hot air pipe; the temperature sensing unit is detachably connected to the environmental chamber.

4. An axial force test method, applied to a multifunctional test system according to claim 1, characterized in that: The axial force test method includes: Step S10, based on the first swing angle of the first test shaft and the second swing angle of the second test shaft being positioned, controlling the first motor to apply a first torque to the first inner star wheel, and controlling the second motor to apply a preset speed and a second torque to the second outer star wheel; The first shaft body has the same angle with the first inner star wheel and the first outer star wheel, and both are the first swing angles; the second shaft body has the same angle with the second inner star wheel and the second outer star wheel, and both are the second swing angles; Step S20, based on the first motor applying the first torque to the first inner star wheel, the second motor applying the preset speed and the second torque to the second outer star wheel, and accumulating the first loading time; Step S30: acquiring first axial force data of a first sensing unit based on the first loading duration reaching a first preset duration.

5. An axial force test method according to claim 4, characterized in that: The axial force test method also includes: Step S40, accumulating a first number of tests based on the first axial force data; Step S50, adjusting the first swing angle and the second swing angle based on that the first test number is less than a first preset number; Step S60, based on the completion of adjustment of the first swing angle and the second swing angle, looping from step S10 to step S50; until the first test number reaches the first preset number, the loop ends.

6. An axial force test method according to claim 5, characterized in that: The axial force test method also includes: Step S70, based on the end of the cycle in step S60, replacing the installation positions of the first test shaft and the second test shaft; Step S80: based on the completion of the position replacement of the first test axis and the second test axis, repeat the steps S10 to S60.

7. A durability test method, applied to a multifunctional test system as claimed in claim 1, characterized in that: The durability test method includes: Step S100, based on the first swing angle of the first test shaft and the second swing angle of the second test shaft being positioned, controlling the first motor to apply a first torque to the first inner star wheel, and controlling the second motor to apply a preset speed and a second torque to the second outer star wheel; The first shaft body has the same angle with the first inner star wheel and the first outer star wheel, and both are the first swing angles; the second shaft body has the same angle with the second inner star wheel and the second outer star wheel, and both are the second swing angles; Step S200, based on the first motor applying the first torque to the first inner star wheel, the second motor applying the preset speed and the second torque to the second outer star wheel, and accumulating a second loading time; Step S300: acquiring damage data of the first test shaft and the second test shaft based on the second loading duration reaching a second preset duration.

8. A durability test method according to claim 7, characterized in that: The step S100 includes: Step S101, based on the first swing angle of the first test axis and the second swing angle of the second test axis being positioned, the second support unit is controlled to reciprocate; Step S102: Based on the reciprocating movement of the second support unit, the first motor is controlled to apply a first torque to the first inner star wheel, and the second motor is controlled to apply a preset speed and a second torque to the second outer star wheel.

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