A method and apparatus for measuring a double drive shaft

Abstract

The application relates to the technical field of transmission shafts, in particular to a duplex transmission shaft measuring method and device. The method comprises the following steps: initially positioning the duplex transmission shaft, so that the projections of the first fork shaft and the second fork shaft in a reference plane form a first preset included angle; based on the initial positioning being completed, adjusting the position of the middle fork unit, so that the projections of the first fork shaft and the middle fork unit in the reference plane form a second preset included angle, and the projections of the second fork shaft and the middle fork unit in the reference plane form a third preset included angle; and controlling the first fork shaft to rotate to a first preset time length, and detecting the first interference information of the duplex transmission shaft. In this way, the problem of how to test the limit angle of two cross shaft universal joints in actual work is solved.

Description

Technical Field

[0001] This invention relates to the field of transmission shaft technology, and more specifically, to a method and apparatus for measuring double transmission shafts. Background Technology

[0002] The double driveshaft includes a first driveshaft, a second driveshaft, a connecting part, and a universal joint. The first driveshaft is connected to the connecting part via one universal joint, and the second driveshaft is connected to the connecting part via another universal joint. The universal joint can accommodate the power transmission requirements of the first and second driveshafts at different angles. To ensure the reliability and safety of the double driveshaft in practical applications, it is necessary to test the double driveshaft to determine the limit angle it can withstand during rotation.

[0003] Currently, during factory testing of double drive shafts, only the first and second drive shafts are tested at a specific included angle. However, this testing method does not simulate the actual usage scenarios of double drive shafts in real-world applications. This leads to deviations in both the first and second included angles between the first and second drive shafts and the connecting axis, resulting in at least one angle failing to reach the set angle. Therefore, the interference test results for double drive shafts are not accurate enough. Summary of the Invention

[0004] To address the problem of how to test the limit angles of two universal joints in actual operation, this invention provides a method and apparatus for measuring double drive shafts.

[0005] In a first aspect, the present invention provides a method for measuring a double-drive shaft, the method comprising:

[0006] The dual drive shafts are initially positioned so that the projections of the first and second fork shafts onto the reference plane form a first preset angle. The dual drive shafts include the first fork shaft, a middle fork unit, the second fork shaft, and two universal joints. The first fork shaft is connected to the middle fork unit via one of the universal joints, and the second fork shaft is connected to the middle fork unit via the other universal joint. In the initial positioning state, both the first and second fork shafts are parallel to the reference plane.

[0007] Based on the initial positioning, the position of the middle fork unit is adjusted so that the first fork shaft and the projection of the middle fork unit in the reference plane form a second preset angle, and the second fork shaft and the projection of the middle fork unit in the reference plane form a third preset angle; wherein, the sum of the first preset angle, the second preset angle and the third preset angle is 180°;

[0008] Control the first fork shaft to rotate to a first preset time, and detect the first interference information of the double drive shaft.

[0009] In some embodiments, the universal joint includes a cross shaft; the cross shaft includes an integrally formed shaft body and four shaft heads; the four shaft heads are arranged in a cross shape; the first fork shaft is rotatably connected to two corresponding shaft heads; the second fork shaft is rotatably connected to two corresponding shaft heads; one end of the middle fork unit is rotatably connected to two corresponding shaft heads, and the other end of the middle fork unit is rotatably connected to two corresponding shaft heads.

[0010] Before the initial positioning of the double drive shaft, the double drive shaft measurement method further includes:

[0011] The dual drive shafts are positioned in a first orientation such that two of the shaft ends of each cross shaft are parallel to the reference plane.

[0012] In some embodiments, the first posture includes both shaft ends connected to the first fork shaft being parallel to the reference plane, and both shaft ends connected to the second fork shaft being parallel to the reference plane.

[0013] In some embodiments, the outer surfaces of the first fork shaft, the middle fork unit, and the second fork shaft are all blank surfaces;

[0014] The method for measuring the double drive shaft also includes:

[0015] Based on the completion of the first interference information detection, the double-drive shaft is adjusted to the second posture; the first fork shaft, the middle fork unit and the second fork shaft can each rotate 180° around their own axis to switch from the first posture to the second posture;

[0016] Based on the fact that the double drive shaft is in the second posture, the middle fork unit is adjusted so that the first fork shaft and the projection of the middle fork unit in the reference plane form a second preset angle, and the second fork shaft and the projection of the middle fork unit in the reference plane form a third preset angle;

[0017] Control the first fork shaft to rotate to a second preset time, and detect the second interference information of the double-drive shaft.

[0018] In some embodiments, the second preset duration is less than the first preset duration.

[0019] In some embodiments, the outer surfaces of the first fork shaft, the middle fork unit, and the second fork shaft are all blank surfaces;

[0020] The method for measuring the double drive shaft also includes:

[0021] Based on the completion of the first interference information detection, the double-drive shaft is adjusted to the third posture; the first fork shaft, the middle fork unit and the second fork shaft can each rotate 90° around their own axis to switch from the first posture to the third posture;

[0022] Based on the fact that the dual drive shaft is in the third posture, the middle fork unit is adjusted so that the projection of the first fork shaft and the middle fork unit on the reference plane forms the second preset angle, and the projection of the second fork shaft and the middle fork unit on the reference plane forms the third preset angle;

[0023] Control the first fork shaft to rotate to a third preset time, and detect the third interference information of the double-drive shaft.

[0024] In some embodiments, the third preset duration is less than the first preset duration.

[0025] In some embodiments, based on the completion of the third interference information detection, the double-drive shaft is adjusted to the fourth posture; the first fork shaft, the middle fork unit and the second fork shaft can each rotate 180° around their own axis to switch from the third posture to the fourth posture.

[0026] Based on the fact that the dual drive shaft is in the fourth posture, the middle fork unit is adjusted so that the projection of the first fork shaft and the middle fork unit on the reference plane forms the second preset angle, and the projection of the second fork shaft and the middle fork unit on the reference plane forms the third preset angle;

[0027] Control the first fork shaft to rotate to a fourth preset time, and detect the fourth interference information of the double-drive shaft.

[0028] In some embodiments, the fourth preset duration is less than the third preset duration.

[0029] In a second aspect, the present invention provides a measuring device, which is applied to the double-drive shaft measuring method described in any embodiment of the first aspect, the measuring device comprising:

[0030] A fixing component includes a fixing base, a first bracket, and a first driving part; the fixing base is fixed in position; the first bracket is connected to the fixing base; the first bracket is used to support a first fork shaft; the first driving part is used to drive the first fork shaft to rotate around its own axis.

[0031] A central support assembly includes a central support base and a second bracket; the position of the central support base is adjustable; the second bracket is rotatably connected to the central support base about a vertical axis; the second bracket is used to support the central fork unit.

[0032] The swing assembly includes a swing base, a third bracket, and a second drive unit; the third bracket is connected to the swing base; the third bracket is used to support a second fork shaft; and the second drive unit drives the swing base to swing around a vertical axis.

[0033] To address the problem of how to test the limiting angles of two universal joints during actual operation, this invention has the following advantages:

[0034] By adjusting the position of the middle fork unit, the projections of the first fork shaft and the middle fork unit onto the reference plane form a second preset angle, and the projections of the second fork shaft and the middle fork unit onto the reference plane form a third preset angle. The sum of the first, second, and third preset angles is 180°. Finally, the first fork shaft is controlled to rotate to a first preset time, and the first interference information of the dual drive shafts is detected. This achieves precise control and coordinated adjustment of the angles between the first and middle fork shafts, and between the second and middle fork shafts, thereby avoiding angular deviations between the axes of the first and second fork shafts and the middle fork unit. This ensures accurate reflection of the extreme angle states of the two universal joints during actual operation and improves the accuracy of interference testing of the dual drive shafts. Attached Figure Description

[0035] Figure 1 A flowchart illustrating a method for measuring a double drive shaft according to one embodiment is shown;

[0036] Figure 2 A schematic diagram of a measuring device and a double drive shaft according to one embodiment is shown;

[0037] Figure 3 It shows Figure 2 Top view of the measuring device and the double drive shaft in the middle;

[0038] Figure 4 It shows Figure 2 A front view of the measuring device and the double drive shaft in the diagram;

[0039] Figure 5 It shows Figure 3 A simplified diagram of the double drive shafts in the diagram.

[0040] Reference numerals: Double drive shaft 10; First fork shaft 11; First fork body 111; First shaft 112; Middle fork unit 12; Middle left fork 121; Connector 122; Middle right fork 123; Second fork shaft 13; Second fork body 131; Second shaft 132; Universal joint 14; Shaft body 141; Shaft head 142; Fixing assembly 20; Fixing base 21; First bracket 22; First drive unit 23; Middle support assembly 30; Middle support seat 31; Second bracket 32; Swing assembly 40; Swing base 41; Third bracket 42; Second drive unit 43; First preset angle α1; Second preset angle α2; Third preset angle α3. Detailed Implementation

[0041] 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, and are not intended to imply any limitation on the scope of the disclosure.

[0042] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based 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 terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. 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 a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, 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 or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0043] Currently, during factory testing of the double drive shaft 10, only the first and second drive shafts are tested at a specific angle. However, this testing method does not simulate the actual usage of the double drive shaft 10 in real-world applications. This leads to deviations in both the first and second angles between the first drive shaft and the connecting axis, resulting in at least one angle failing to reach the set angle. Consequently, the interference test results for the double drive shaft 10 are not accurate enough. Therefore, to address these issues, this invention provides a method for measuring the double drive shaft 10.

[0044] Example 1:

[0045] In this embodiment, as Figure 1As shown, the measurement method for the double drive shaft 10 includes steps S10 to S30, which will be described in detail below:

[0046] Step S10 involves initially positioning the double drive shaft 10 so that the projections of the first fork shaft 11 and the second fork shaft 13 onto the reference plane form a first preset angle α1, simulating the limit state of the double drive shaft 10 in actual application. The first preset angle α1 provides a stable reference for subsequent position adjustment and interference detection, ensuring that subsequent operations are performed in the correct initial state and reducing detection errors caused by improper initial positioning. The double drive shaft 10 includes a first fork shaft 11, a middle fork unit 12, a second fork shaft 13, and two universal joints 14. The first fork shaft 11 is connected to the middle fork unit 12 via one universal joint 14, and the second fork shaft 13 is connected to the middle fork unit 12 via the other universal joint 14. Since the angle between the first fork shaft 11 and the second fork shaft 13 changes in real time during actual application, this connection structure can flexibly adapt to dynamic angle adjustments, ensuring uninterrupted power transmission. With the initial positioning completed, both the first fork shaft 11 and the second fork shaft 13 are parallel to the reference plane, which facilitates the subsequent detection of the first interference information between the universal joint 14 and the middle fork unit 12.

[0047] like Figure 5 As shown, in actual use, the first fork shaft 11 of the double driveshaft 10 only rotates, while the second fork shaft 13 adjusts its angle according to actual needs. Before the double driveshaft 10 leaves the factory, the angles of the first fork shaft 11 and the second fork shaft 13 need to be tested to ensure that the second preset angle α2 and the third preset angle α3 both reach their working limits, thus enabling accurate detection results. However, in actual product structure design testing, the physical limits of the second preset angle α2 or the third preset angle α3 are greater than the working limits. Therefore, during testing, when the angle between the first fork shaft 11 and the middle fork unit 12 reaches the physical limit, the angle between the second fork shaft 13 and the middle fork unit 12 will be less than the corresponding working limit, leading to inaccurate vehicle results. Therefore, step S20 is used to adjust the position of the middle fork unit 12 so that both the second preset angle α2 and the third preset angle α3 reach their working limits.

[0048] Step S20: Based on the initial positioning, adjust the position of the middle fork unit 12 so that the projections of the first fork shaft 11 and the middle fork unit 12 on the reference plane form a second preset angle α2, and the projections of the second fork shaft 13 and the middle fork unit 12 on the reference plane form a third preset angle α3. The sum of the first preset angle α1, the second preset angle α2, and the third preset angle α3 is 180°. By adjusting the position of the middle fork unit 12 to form the first preset angle α1, the second preset angle α2, and the third preset angle α3, the posture of the double-drive shaft 10 under the working limit state is simulated, so that the second preset angle α2 and the third preset angle α3 reach the working limit value. This provides a comprehensive attitude basis for subsequent detection of whether there is interference between the first fork shaft 11 and the middle fork unit 12, and between the second fork shaft 13 and the middle fork unit 12 during rotation, ensuring the accuracy of the detection results.

[0049] Step S30: Control the first fork shaft 11 to rotate to the first preset time, detect the first interference information of the double drive shaft 10, and simulate the rotation state during actual operation. Detecting the first interference information during this process can promptly identify whether there are interference problems such as mutual collision and friction between the universal joint 14 and the middle fork unit 12 corresponding to the first fork shaft 11, and between the universal joint 14 and the middle fork unit 12 corresponding to the second fork shaft 13 during the movement. This provides a key basis for judging its working reliability and ensures the safe operation of the double drive shaft 10 in actual applications.

[0050] For example, since the position of the first fork shaft 11 is fixed and cannot wobble, the second preset included angle α2 is 30° and the third preset included angle α3 is 20°. However, the working limit value of the second preset included angle α2 is 28° and the working limit value of the third preset included angle α3 is 22°. Therefore, only the second preset included angle α2 reaches the working limit value, while the third preset included angle α3 does not. Therefore, this application uses the method of adjusting the position of the middle fork unit 12 to make the second preset included angle α2 reach 28° and the third preset included angle α3 reach 22°, and then rotates the first fork shaft 11 for a first preset time to detect the first interference information of the double transmission shaft 10.

[0051] Furthermore, the universal joint 14 includes a cross shaft. The cross shaft comprises an integrally formed shaft body 141 and four shaft ends 142 arranged in a cross shape. The integrally formed structure of the shaft body 141 enhances the overall strength of the cross shaft and reduces the risk of breakage. The first fork shaft 11 is rotatably connected to two corresponding shaft ends 142, and the second fork shaft 13 is rotatably connected to two corresponding shaft ends 142. One end of the middle fork unit 12 is rotatably connected to two corresponding shaft ends 142, and the other end of the middle fork unit 12 is rotatably connected to two corresponding shaft ends 142, thereby ensuring that the universal joint 14 has good flexibility when transmitting power and meets the power transmission requirements at different angles.

[0052] Before the initial positioning of the double drive shaft 10, the measurement method for the double drive shaft 10 also includes step S40. The measurement method for the double drive shaft 10 executes steps S40, S10, S20, and S30 in sequence. Step S40 will be described in detail below:

[0053] In step S40, the double drive shaft 10 is positioned in a first posture so that two of the shaft ends 142 of each cross shaft are parallel to the reference plane. This preset first posture ensures that the relative positional relationship between the cross shaft and the first fork shaft 11 and the second fork shaft 13 is within a measurable and controllable range during the subsequent initial positioning and angle adjustment process, thereby improving the standardization of the entire measurement process and laying the foundation for accurate detection of interference information.

[0054] In other embodiments, the first fork shaft 11 includes a first fork body 111 and a first shaft 112. The first fork body 111 and one end of the first shaft 112 are integrally formed, and the other end of the first shaft 112 extends away from the first fork body 111. The first fork body 111 is rotatably connected to two corresponding shaft ends 142. The middle fork unit 12 includes a middle left fork 121, a connecting body 122, and a middle right fork 123. The middle left fork 121, the connecting body 122, and the middle right fork 123 are sequentially connected along the length direction of the connecting body 122. The middle left fork 121 is recessed towards the connecting body 122, and the middle right fork 123 is recessed towards the connecting body 122. The second fork shaft 13 includes a second fork body 131 and a second shaft 132. The second fork body 131 and one end of the second shaft 132 are integrally formed, and the other end of the second shaft 132 extends away from the second fork body 131. The second fork body 131 is rotatably connected to two corresponding shaft ends 142.

[0055] Furthermore, the first posture includes both shaft ends 142 connected to the first fork shaft 11 being parallel to the reference plane, and both shaft ends 142 connected to the second fork shaft 13 being parallel to the reference plane. This allows for a preliminary assessment, in a static state, whether the rotation angle of the first fork shaft 11 around two of the shaft ends 142 of the cross axis reaches a first preset angle α1, and whether the rotation angle of the second fork shaft 13 around two of the shaft ends 142 of the cross axis reaches a second preset angle α2. This preset first posture ensures that the relative positional relationship between the cross axis and the first and second fork shafts 11 and 13, respectively, is within a measurable and controllable range during subsequent initial positioning and angle adjustment processes. This improves the standardization of the entire measurement process and lays the foundation for accurate detection of interference information.

[0056] In the double drive shaft 10, because the middle left fork 121 and the middle right fork 123 are concave, the shaft head 142 is prone to interference with the positions of the middle left fork 121 and the middle right fork 123. Therefore, it is prioritized to ensure that the double drive shaft 10 is positioned in the first orientation, that is, the two shaft heads 142 connected to the first fork shaft 11 are parallel to the reference plane, and the two shaft heads 142 connected to the second fork shaft 13 are parallel to the reference plane, so that the measurement results are more accurate.

[0057] In other embodiments, the outer surfaces of the first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 are all blank surfaces, requiring no additional finishing treatment, thereby reducing processing steps and manufacturing costs.

[0058] The measurement method for the double drive shaft 10 also includes step S50, which comprises steps S51, S52, and S53. The measurement method for the double drive shaft 10 executes steps S40, S10, S20, S30, and S50 sequentially. Steps S51 to S53 will be described in detail below:

[0059] Since the outer surfaces of the first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 are all blank surfaces, the test results may be different due to the influence of the blank surfaces during the inspection process. Therefore, it is necessary to inspect the double drive shaft 10 in the second posture.

[0060] Step S51: Based on the completion of the first interference information detection, adjust the double drive shaft 10 to the second posture. The first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 can each rotate 180° around their own axis to switch from the first posture to the second posture. This allows interference detection to be performed on the two shaft ends 142 connected to the first fork shaft 11 and the two shaft ends 142 connected to the second fork shaft 13 at their extreme positions from opposite angles, thereby more comprehensively reflecting the interference situation of the double drive shaft 10 under different postures and improving the integrity of the detection.

[0061] In step S52, based on the dual drive shaft 10 being in the second posture, the middle fork unit 12 is adjusted so that the projections of the first fork shaft 11 and the middle fork unit 12 onto the reference plane form a second preset angle α2, and the projections of the second fork shaft 13 and the middle fork unit 12 onto the reference plane form a third preset angle α3. This maintains the same angular relationship as in the first posture, ensuring consistency of the detection conditions in both postures, so that the interference information detected in the second posture can be effectively compared with the information in the first posture.

[0062] Step S53: Control the first fork shaft 11 to rotate to the second preset time, detect the second interference information of the double drive shaft 10, and verify it with the detection results under the first posture. This allows for a comprehensive understanding of the interference situation of the double drive shaft 10 under different postures and rotation times, and ultimately determines whether there is an interference problem in the double drive shaft 10 under different postures, providing sufficient basis for improving the reliability of the double drive shaft 10 in the market.

[0063] Furthermore, the second preset duration is shorter than the first preset duration. By shortening the detection duration in the second posture, while ensuring the acquisition of effective interference information, the overall detection time can be reduced, thereby improving detection efficiency. At the same time, since the second posture is the symmetrical state of the first posture, the shorter detection duration can already form an effective comparison with the detection results in the first posture, thus reducing detection costs while ensuring detection accuracy.

[0064] Furthermore, the outer surfaces of the first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 are all blank surfaces. Since the outer surfaces are not assembly surfaces, no additional surface processing is required, which can reduce processing steps and lower manufacturing costs.

[0065] The measurement method for the double drive shaft 10 also includes step S60, which includes steps S61, S62, and S63, as well as steps S40, S10, S20, S30, and S60. Step S60 will be described in detail below:

[0066] Since the outer surfaces of the first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 are all blank surfaces, the test results may be different due to the influence of the blank surfaces during the inspection process. Therefore, it is necessary to inspect the double drive shaft 10 in the third posture.

[0067] Step S61: Based on the completion of the first interference information detection, adjust the double drive shaft 10 to the third posture. The first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 can each rotate 90° around their own axis to switch from the first posture to the third posture. This allows detection of whether the middle left fork 121 on the middle fork unit 12 interferes with the first fork shaft 11, and whether the middle right fork 123 on the middle fork unit 12 interferes with the second fork shaft 13, thus more comprehensively reflecting the interference situation of the double drive shaft 10 under different postures and improving the completeness of the detection.

[0068] In step S62, based on the dual drive shaft 10 being in the third posture, the middle fork unit 12 is adjusted so that the projections of the first fork shaft 11 and the middle fork unit 12 onto the reference plane form a second preset angle α2, and the projections of the second fork shaft 13 and the middle fork unit 12 onto the reference plane form a third preset angle α3. This maintains the same angular relationship as in the first posture, ensuring consistency of detection conditions between the first and third postures, so that the interference information detected in the third posture can be effectively compared with the information in the first posture.

[0069] Step S63: Control the first fork shaft 11 to rotate to the third preset time, detect the third interference information of the double drive shaft 10, and verify it with the detection results under the first posture. This allows for a comprehensive understanding of the interference situation of the double drive shaft 10 under different postures and rotation times, and ultimately determines whether there is an interference problem in the double drive shaft 10 under different postures, providing sufficient basis for improving the reliability of the double drive shaft 10 in the market.

[0070] Furthermore, the third preset duration is shorter than the first preset duration. This ensures that effective interference information can be obtained while reducing the overall detection time and improving detection efficiency. At the same time, since the third posture is formed by rotating the first posture by 90°, the shorter detection duration can effectively compare with the detection results of the first posture, thereby reducing detection costs while ensuring comprehensive detection.

[0071] In other embodiments, the third preset time is less than the second preset time. The shaft head 142 connected to the first fork shaft 11 and the second fork shaft 13 is more likely to interfere at the extreme position than the shaft head 142 connected to the middle fork unit 12. Therefore, if the former passes the test, even if there is an initial positioning error on the blank surface, a certain reference can be obtained from the first two tests, thereby further shortening the test time and improving the test efficiency.

[0072] Furthermore, the measurement method for the double drive shaft 10 also includes step S70, which includes steps S71, S72, and S73. Steps S40, S10, S20, S30, S60, and S70 are also included. Step S70 will be described in detail below:

[0073] Since the outer surfaces of the first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 are all blank surfaces, the test results may be different due to the influence of the blank surfaces during the inspection process. Therefore, it is necessary to inspect the double drive shaft 10 in the fourth posture.

[0074] Step S71: Based on the completion of the third interference information detection, the double drive shaft 10 is adjusted to the fourth posture; the first fork shaft 11, the middle fork unit 12, and the second fork shaft 13 can each rotate 180° around their own axis to switch from the third posture to the fourth posture. This allows the double drive shaft 10 to be detected from different angles, thereby more comprehensively reflecting the interference situation of the double drive shaft 10 in different postures and improving the integrity of the detection.

[0075] In step S72, based on the double drive shaft 10 being in the fourth posture, the middle fork unit 12 is adjusted so that the projections of the first fork shaft 11 and the middle fork unit 12 in the reference plane form a second preset angle α2, and the projections of the second fork shaft 13 and the middle fork unit 12 in the reference plane form a third preset angle α3. This maintains the same angular relationship as in the first posture, ensuring consistency of the detection conditions in the first and third postures, so that the interference information detected in the third posture can be effectively compared with the information in the first posture.

[0076] Step S73: Control the first fork shaft 11 to rotate to the fourth preset time, detect the fourth interference information of the double drive shaft 10, and verify it with the detection results under the first posture. This allows for a comprehensive understanding of the interference situation of the double drive shaft 10 under different postures and rotation times, and ultimately determines whether there is an interference problem in the double drive shaft 10 under different postures, providing sufficient basis for improving the reliability of the double drive shaft 10 in the market.

[0077] Furthermore, the fourth preset duration is shorter than the third preset duration. While ensuring the acquisition of effective interference information in the fourth posture, the overall detection time can be further shortened, and the detection efficiency can be improved. Since the fourth posture is formed by rotating the third posture by 180°, the two have a certain degree of symmetry. The shorter detection duration can effectively compare with the detection results of the third posture, thereby ensuring comprehensive detection coverage while reducing energy consumption and time costs in the detection process.

[0078] Example 2:

[0079] In this embodiment, as Figure 2 , Figure 3 , Figure 4 As shown, the measuring device includes a fixed component 20, a central support component 30, and a swing component 40.

[0080] The fixing assembly 20 includes a fixing base 21, a first bracket 22, and a first drive unit 23. The fixing base 21 is fixed in position, and the first bracket 22 is connected to the fixing base 21, supporting the first fork shaft 11. The fixing base 21 provides stable support for the first bracket 22 and the first drive unit 23, ensuring the stable support of the first fork shaft 11 and preventing it from shaking during rotation. The first drive unit 23 drives the first fork shaft 11 to rotate around its own axis, simulating the actual working rotation state of the first fork shaft 11 and providing the power conditions for subsequent detection of interference information.

[0081] The middle support assembly 30 includes a middle support base 31 and a second bracket 32. The position of the middle support base 31 is adjustable, facilitating changes in the position of the middle fork unit 12 according to initial positioning and attitude adjustment requirements, thus meeting the adjustment requirements of the second preset angle α2 and the third preset angle α3. The second bracket 32 ​​is rotatably connected to the middle support base 31 around a vertical axis; the second bracket 32 ​​supports the middle fork unit 12, allowing the middle fork unit 12 to rotate flexibly to adjust its angular relationship with the first fork shaft 11 and the second fork shaft 13. Through this structure, precise adjustment of the second preset angle α2 and the third preset angle α3 can be achieved, thereby ensuring that the angle parameters meet the detection requirements.

[0082] The swing assembly 40 includes a swing base 41, a third bracket 42, and a second drive unit 43. The third bracket 42 is connected to the swing base 41 and supports the second fork shaft 13. The second drive unit 43 drives the swing base 41 to swing around a vertical axis. The connection between the third bracket 42 and the swing base 41 provides stable support for the second fork shaft 13, ensuring its stable position during the detection process. The second drive unit 43 drives the swing base 41 to swing around a vertical axis, which in turn causes the second fork shaft 13 to swing accordingly. This, in conjunction with the position adjustment of the middle fork unit 12, adjusts the angle between the first fork shaft 11 and the second fork shaft 13, thereby improving the accuracy of the measurement process.

[0083] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A method for measuring a double-drive shaft, characterized in that, The method for measuring the double drive shaft includes: The dual drive shafts are initially positioned so that the projections of the first and second fork shafts onto the reference plane form a first preset angle. The dual drive shafts include the first fork shaft, a middle fork unit, the second fork shaft, and two universal joints. The first fork shaft is connected to the middle fork unit via one of the universal joints, and the second fork shaft is connected to the middle fork unit via the other universal joint. In the initial positioning state, both the first and second fork shafts are parallel to the reference plane. Based on the initial positioning, the position of the middle fork unit is adjusted so that the first fork shaft and the projection of the middle fork unit in the reference plane form a second preset angle, and the second fork shaft and the projection of the middle fork unit in the reference plane form a third preset angle; wherein, the sum of the first preset angle, the second preset angle and the third preset angle is 180°; Control the first fork shaft to rotate to a first preset time, and detect the first interference information of the double drive shaft.

2. The method for measuring a double-drive shaft according to claim 1, characterized in that, The universal joint includes a cross shaft; the cross shaft includes an integrally formed shaft body and four shaft heads; the four shaft heads are arranged in a cross shape; the first fork shaft is rotatably connected to two corresponding shaft heads; the second fork shaft is rotatably connected to two corresponding shaft heads; one end of the middle fork unit is rotatably connected to two corresponding shaft heads, and the other end of the middle fork unit is rotatably connected to two corresponding shaft heads. Before the initial positioning of the double drive shaft, the double drive shaft measurement method further includes: The dual drive shafts are positioned in a first orientation such that two of the shaft ends of each cross shaft are parallel to the reference plane.

3. The method for measuring a double-drive shaft according to claim 2, characterized in that, The first posture includes both shaft ends connected to the first fork shaft being parallel to the reference plane, and both shaft ends connected to the second fork shaft being parallel to the reference plane.

4. The method for measuring a double-drive shaft according to claim 3, characterized in that, The outer surfaces of the first fork shaft, the middle fork unit, and the second fork shaft are all blank surfaces; The method for measuring the double drive shaft also includes: Based on the completion of the first interference information detection, the double-drive shaft is adjusted to the second posture; the first fork shaft, the middle fork unit and the second fork shaft can each rotate 180° around their own axis to switch from the first posture to the second posture; Based on the fact that the double drive shaft is in the second posture, the middle fork unit is adjusted so that the first fork shaft and the projection of the middle fork unit in the reference plane form a second preset angle, and the second fork shaft and the projection of the middle fork unit in the reference plane form a third preset angle; Control the first fork shaft to rotate to a second preset time, and detect the second interference information of the double-drive shaft.

5. The method for measuring a double-drive shaft according to claim 4, characterized in that, The second preset duration is less than the first preset duration.

6. The method for measuring a double-drive shaft according to claim 3, characterized in that, The outer surfaces of the first fork shaft, the middle fork unit, and the second fork shaft are all blank surfaces; The method for measuring the double drive shaft also includes: Based on the completion of the first interference information detection, the double-drive shaft is adjusted to the third posture; the first fork shaft, the middle fork unit and the second fork shaft can each rotate 90° around their own axis to switch from the first posture to the third posture; Based on the fact that the dual drive shaft is in the third posture, the middle fork unit is adjusted so that the projection of the first fork shaft and the middle fork unit on the reference plane forms the second preset angle, and the projection of the second fork shaft and the middle fork unit on the reference plane forms the third preset angle; Control the first fork shaft to rotate to a third preset time, and detect the third interference information of the double-drive shaft.

7. The method for measuring a double-drive shaft according to claim 6, characterized in that, The third preset duration is less than the first preset duration.

8. The method for measuring a double-drive shaft according to claim 6, characterized in that, Based on the completion of the third interference information detection, the double-drive shaft is adjusted to the fourth posture; the first fork shaft, the middle fork unit and the second fork shaft can each rotate 180° around their own axis to switch from the third posture to the fourth posture. Based on the fact that the dual drive shaft is in the fourth posture, the middle fork unit is adjusted so that the projection of the first fork shaft and the middle fork unit on the reference plane forms the second preset angle, and the projection of the second fork shaft and the middle fork unit on the reference plane forms the third preset angle; Control the first fork shaft to rotate to a fourth preset time, and detect the fourth interference information of the double-drive shaft.

9. A method for measuring a double-drive shaft according to claim 8, characterized in that, The fourth preset duration is less than the third preset duration.

10. A measuring device, applied to the double-drive shaft measuring method according to any one of claims 1-9, characterized in that, The measuring device includes: A fixing component includes a fixing base, a first bracket, and a first driving part; the fixing base is fixed in position; the first bracket is connected to the fixing base; the first bracket is used to support a first fork shaft; the first driving part is used to drive the first fork shaft to rotate around its own axis. A central support assembly includes a central support base and a second bracket; the position of the central support base is adjustable; the second bracket is rotatably connected to the central support base about a vertical axis; the second bracket is used to support the central fork unit. The swing assembly includes a swing base, a third bracket, and a second drive unit; the third bracket is connected to the swing base; the third bracket is used to support a second fork shaft; and the second drive unit drives the swing base to swing around a vertical axis.

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