A method and system for measuring the release force of a universal joint

Abstract

The present invention relates to the technical field of universal joints, and in particular, to a method and system for measuring the disengagement force of a universal joint. The method includes, based on a test instruction trigger, driving the universal joint to move to a point where the transmission part of the universal joint is close to one end of the housing of the universal joint and abuts against one end of the first detection module away from the second detection module. Based on the transmission part of the universal joint being close to one end of the housing of the universal joint and abutting against one end of the first detection module away from the second detection module, a second drive unit drives the second detection module to move in a direction away from the first detection module until it abuts against the housing. Based on the abutment of the second detection module with the housing, the spacing between the drive transmission part and the housing is increased to a set distance. Based on the spacing between the drive transmission part and the housing being increased to the set distance, the maximum value of the driving force during the process of the spacing between the drive transmission part and the housing being increased to the set distance is obtained. In this way, the problem of low efficiency in measuring the disengagement force of the universal joint is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of universal joints, and in particular to a method and system for measuring the breakout force of a universal joint. Background Art

[0002] The purpose of measuring the breakout force of universal joints is to ensure product quality. During the production process of universal joints, by measuring the breakout force, it is possible to check whether the universal joints meet the design standards and quality requirements. Qualified breakout force can ensure that the universal joints are reliably connected during normal use and prevent loosening, falling off, etc. For example, in automobiles, machinery and other equipment, the falling off of universal joints may cause serious safety accidents. Accurately measuring the breakout force can enable the equipment to operate within a safe parameter range. At present, based on the structural parameters, material properties and operating conditions of the universal joint, through theoretical analysis and experimental research, an empirical formula between the breakout force and related parameters can be established. When these parameters are known, the empirical formula is used to calculate the approximate value of the breakout force of the universal joint, but the accuracy of the calculation result of this method depends on the rationality of the empirical formula and the accuracy of the parameter values.

[0003] However, before measuring the universal joint breakout force, the universal joint and the fixture need to be positioned. The shape of the fixture is relatively complex. In order to ensure the positioning accuracy, the positioning is relatively difficult and the preparation process is relatively cumbersome, resulting in low efficiency of the universal joint breakout force test. Summary of the invention

[0004] In order to solve the problem of low efficiency in measuring the universal joint breakout force, the present invention provides a universal joint breakout force measuring method and system.

[0005] In a first aspect, the present invention provides a method for measuring a universal joint breakout force, the method comprising:

[0006] Step S10, based on the triggering of the test instruction, drives the universal joint to move to the end of the shell of the transmission part of the universal joint close to the universal joint and abuts against the end of the first detection module away from the second detection module; wherein the first detection unit includes a first detection module and a first opening; the first opening is recessed from the outer peripheral surface of the first detection module toward the central axis of the first detection module; the second detection unit includes a second detection module and a second opening; the second opening is recessed from the outer peripheral surface of the second detection module toward the central axis of the second detection module; the moving trajectory of the connecting shaft part of the universal joint is located in the space surrounded by the first opening and the space surrounded by the second opening; the diameter of the connecting shaft is less than or equal to the width of the first opening; the diameters of the shell and the transmission part are respectively greater than the width of the first opening; the diameter of the connecting shaft is less than or equal to the width of the second opening; the diameters of the shell and the transmission part are respectively greater than the width of the second opening;

[0007] Step S20, based on the transmission part of the universal joint close to the housing of the universal joint abutting against the end of the first detection module away from the second detection module, the second driving unit drives the second detection module to move away from the first detection module until it abuts against the housing;

[0008] Step S30, based on the abutment between the second detection module and the housing, driving the distance between the transmission part and the housing to increase to a set distance;

[0009] Step S40 , based on driving the distance between the transmission part and the housing to increase to the set distance, obtaining a maximum value of the driving force in the process of driving the distance between the transmission part and the housing to increase to the set distance.

[0010] In some embodiments, step S30 includes:

[0011] Step S31, based on the abutment between the second detection unit and the shell, pressure data is obtained; wherein the pressure data includes a first pressure value, a second pressure value, and a third pressure value; the first pressure value includes the pressure exerted on a portion of the first detection module that is away from the second detection unit and close to the first opening; the second pressure value includes the pressure exerted on one end of the first opening close to the central axis of the first detection module; the third pressure value includes the pressure exerted on one end of the second opening close to the central axis of the second detection module;

[0012] Step S32, based on the pressure data being in an abnormal state, adjusting the position of the universal joint until the abnormal state is eliminated; wherein the abnormal state includes a first abnormality, a second abnormality, and a third abnormality; the first abnormality includes that the first pressure value is less than a first pressure threshold, the second pressure value is greater than or equal to a second pressure threshold, and the third pressure value is greater than or equal to a third pressure threshold; the second abnormality includes that the second pressure value is less than the second pressure threshold or the third pressure value is less than the third pressure threshold; the third abnormality includes that the second pressure value is less than the second pressure threshold and the third pressure value is less than the third pressure threshold;

[0013] Step S33, based on the elimination of the abnormal state, the pressure data is in a normal state; wherein the normal state includes that the first pressure value is greater than or equal to the first pressure threshold, the second pressure value is greater than or equal to the second pressure threshold, and the third pressure value is greater than or equal to the third pressure threshold;

[0014] Step S34: based on the pressure data being in the normal state, driving the distance between the transmission part and the housing to increase to a set distance.

[0015] In some embodiments, the step S32 includes step S321, and the step S321 includes:

[0016] Step S3211: based on the abnormal state being the first abnormality, driving the first detection module to move away from the first opening and toward the second detection unit;

[0017] Step S3212: based on the first detection module moving away from the first opening toward the second detection unit until the first pressure value is greater than or equal to the first pressure threshold, the abnormal state is eliminated.

[0018] In some embodiments, the step S32 includes a step S322, and the step S322 includes:

[0019] Step S3221, based on the abnormal state being the second abnormality, driving the first detection module to rotate in a first direction around a set reference line, and the second detection module to rotate in a second direction around a set reference line; the set reference line is a line connecting the center of an inscribed circle of a contact point between the first drive unit and the first detection module along the axial direction of the first detection module and the center of an inscribed circle of a contact point between the second drive unit and the second detection module along the axial direction of the second detection module;

[0020] Step S3222: The second abnormality is eliminated based on the first detection module and the second detection module rotating to set angles respectively.

[0021] In some embodiments, the step S32 includes a step S323, and the step S323 includes:

[0022] Step S3231, based on the abnormal state being the third abnormality, driving the first detection module to move away from one side of the first opening toward the second detection unit until the second pressure value is greater than or equal to the second pressure threshold and the third pressure value is greater than or equal to the third pressure threshold;

[0023] Step S3232, based on the second pressure value being greater than or equal to the second pressure threshold and the third pressure value being greater than or equal to the third pressure threshold, driving the first detection module to move away from the first opening toward the direction away from the second detection unit until an end of the first detection module close to the transmission part is parallel to an end of the transmission part close to the first detection module;

[0024] Step S3233: based on the fact that one end of the first detection module close to the transmission part is parallel to one end of the transmission part close to the first detection module, the third abnormality is eliminated.

[0025] In some embodiments, step S10 includes:

[0026] Step S11, based on the trigger of the test instruction, driving the universal joint to move until the transmission part and the first opening part abut against the central axis of the first detection module;

[0027] Step S12, based on the transmission part abutting against the central axis of the first opening near the first detection module, driving the universal joint to move toward the second detection module until one end of the transmission part near the shell abuts against the end of the first detection module away from the second detection module.

[0028] In some embodiments, step S40 includes:

[0029] Step S41, based on driving the distance between the transmission part and the housing to increase to the set distance, driving the first detection module to rotate around a set reference line in a first direction, and the second detection module to rotate around a set reference line in a second direction; the set reference line is a line connecting the center of an inscribed circle of a contact point between the first drive unit and the first detection module along the axial direction of the first detection module and the center of an inscribed circle of a contact point between the second drive unit and the second detection module along the axial direction of the second detection module;

[0030] Step S42, based on driving the first detection module to rotate in a first direction around a set reference line and the second detection module to rotate in a second direction around a set reference line, obtain the maximum value of the driving force in the process of driving the distance between the transmission part and the shell to increase to the set distance.

[0031] In a second aspect, the present invention provides a universal joint breakout force measurement system, the universal joint breakout force measurement system is applied to any universal joint breakout force measurement method in the first aspect, the universal joint breakout force measurement system comprises:

[0032] A detection component, the detection component includes a first detection unit, a second detection unit, a first driving unit, a second driving unit, a base unit, and a third driving unit; the base unit is detachably connected to the first driving unit and the second driving unit respectively; the first detection unit includes a first detection module and a first opening; the first opening is recessed from the outer circumference of the first detection module toward the central axis of the first detection module; the first detection module is drivingly connected to the first driving unit; the second detection unit includes a second detection module and a second opening; the second opening is recessed from the outer circumference of the second detection module toward the central axis of the second detection module; the second detection module is drivingly connected to the second driving unit; the first detection module is spaced apart and arranged on a side of the second detection module away from the base; the third driving unit is detachably connected to the base unit;

[0033] A universal joint, the universal joint comprising a shell, a connecting shaft, and a transmission part; the shell is fixedly connected to the connecting shaft; the inner circumference of the transmission part is detachably connected to the outer circumference of the connecting shaft; the transmission part is arranged at an end of the connecting shaft away from the shell; the diameter of the connecting shaft is less than or equal to the width of the first opening; the diameters of the shell and the transmission part are respectively greater than the width of the first opening; the diameter of the connecting shaft is less than or equal to the width of the second opening; the diameters of the shell and the transmission part are respectively greater than the width of the second opening;

[0034] The universal joint disengagement force testing system includes a detection state; the detection state includes the end of the transmission part close to the shell moving to abut against the end of the first detection module away from the second detection module under the drive of the third driving unit; the connecting shaft is respectively located in the space surrounded by the first opening portion and the space surrounded by the second opening portion; the second driving unit drives the second detection module to move away from the end of the first detection module to abut against the end of the second detection module close to the first detection module.

[0035] In some embodiments, the first detection module includes a first abutment portion and a first limiting portion; the first abutment portion is drivingly connected to the first driving unit; the first opening portion is recessed from the outer peripheral surface of the first abutment portion toward the central axis of the first abutment portion; the first limiting portion is fixedly connected to an end of the first abutment portion away from the second detection module; the first limiting portion is arranged on a side of the first abutment portion close to the first opening portion; the axial dimension of the first limiting portion along the first abutment portion gradually increases from the central axis of the first abutment portion to the outer peripheral surface of the first abutment portion.

[0036] In some embodiments, the second detection module includes a second abutment portion and a second limiting portion; the second abutment portion is drivingly connected to the second driving unit; the second opening portion is recessed from the outer peripheral surface of the second abutment portion toward the central axis of the second abutment portion; the second limiting portion is fixedly connected to an end of the second abutment portion away from the first detection module; the second limiting portion is arranged on a side of the second abutment portion close to the second opening portion; the axial dimension of the second limiting portion along the second abutment portion gradually increases from the central axis of the second abutment portion to the outer peripheral surface of the second abutment portion.

[0037] In order to solve the problem of low efficiency in measuring the universal joint breakout force, the present invention has the following advantages:

[0038] When the universal joint is subjected to a break-out force test, since the diameter of the connecting shaft can be less than or equal to the width of the first opening and the second opening, and the diameters of the shell and the transmission part are respectively larger than the widths of the first opening and the second opening, it is only necessary for the first detection module to abut against the transmission part and the second detection module to abut against the shell, and the detection assembly can start the break-out force test on the universal joint, thereby improving the efficiency of the break-out force test of the universal joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A flow chart showing a method for measuring a universal joint breakout force according to an embodiment of the present invention is shown;

[0040] Figure 2 A front view of a universal joint breakout force measurement system according to an embodiment is shown;

[0041] Figure 3 A schematic diagram of a universal joint breakout force measurement system according to an embodiment is shown;

[0042] Figure 4 A schematic diagram of a detection component of a universal joint breakout force measurement system according to an embodiment is shown;

[0043] Figure 5 A schematic diagram of a sensor unit of a universal joint breakout force measurement system according to an embodiment is shown;

[0044] Figure 6 A side view of a sensor unit of a universal joint breakout force measurement system according to an embodiment is shown;

[0045] Figure 7 A schematic diagram of a universal joint of a universal joint breakout force measurement system according to an embodiment is shown.

[0046] Figure markings: detection component 01; first detection unit 11; first detection module 111; first abutment portion 1111; first limiting portion 1112; first opening portion 112; second detection unit 12; second detection module 121; second abutment portion 1211; second limiting portion 1212; second opening portion 122; first drive unit 13; second drive unit 14; base unit 15; sensor unit 16; universal joint 02; housing 21; connecting shaft 22; transmission portion 23. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] In this embodiment, the measurement of the universal joint 02 breakout force is to ensure product quality. During the production process of the universal joint 02, by measuring the breakout force, it can be checked whether the universal joint 02 meets the design standards and quality requirements. However, before currently measuring the breakout force of the universal joint 02, the operating steps for positioning the detection component 01 and the universal joint 02 are relatively complicated, so the preparation process is relatively cumbersome, resulting in low efficiency in testing the breakout force of the universal joint 02. Therefore, in order to solve the above problems, the present invention provides a method for measuring the breakout force of the universal joint 02. The universal joint 02 breakout force measurement system can be applied to the universal joint 02 breakout force measurement method, and the universal joint 02 breakout force measurement system can include a detection component 01 and a universal joint 02.

[0050] like Figure 2As shown, the detection component 01 may include a first detection unit 11, a second detection unit 12, a first drive unit 13, a second drive unit 14, a base unit 15, and a third drive unit. The base unit 15 may be detachably connected to the first drive unit 13 and the second drive unit 14, respectively. The base unit 15 may support the detection component 01, thereby facilitating the detection component 01 to measure the pull-out force of the universal joint 02. The first detection module 111 may be drive-connected to the first drive unit 13. The second detection module 121 may be drive-connected to the second drive unit 14. The first detection module 111 may be spaced apart on a side of the second detection module 121 away from the base. The third drive unit may be detachably connected to the base unit 15. The third drive unit may move the universal joint 02 to complete preliminary positioning with the detection component 01, thereby preparing for the pull-out force measurement of the universal joint 02.

[0051] like Figure 7 As shown, the universal joint 02 may include a housing 21, a connecting shaft 22, and a transmission part 23. The housing 21 may be fixedly connected to the connecting shaft 22. The inner circumference of the transmission part 23 may be detachably connected to the outer circumference of the connecting shaft 22. The transmission part 23 may be arranged at an end of the connecting shaft 22 away from the housing 21. The diameter of the connecting shaft 22 may be less than or equal to the width of the first opening 112. The diameters of the housing 21 and the transmission part 23 may be respectively greater than the width of the first opening 112. The diameter of the connecting shaft 22 may be less than or equal to the width of the second opening 122. The diameters of the housing 21 and the transmission part 23 may be respectively greater than the width of the second opening 122.

[0052] like Figure 5 , Figure 6 As shown, the detection component 01 may include a plurality of sensor units 16 , some of the sensor units 16 may be detachably connected to the first detection module 111 , and another part of the sensor units 16 may be detachably connected to the second detection module 121 .

[0053] like Figure 1 As shown, the method for measuring the disengagement force of the universal joint 02 may include steps S10 to S40, and steps S10 to S40 may be described in detail below.

[0054] Step S10, based on the triggering of the test instruction, the first driving unit 13 can drive the universal joint 02 to move to the end of the transmission part 23 of the universal joint 02 close to the housing 21 of the universal joint 02 and abut against the end of the first detection module 111 away from the second detection module 121. Thus, sufficient preparations can be made for the universal joint 02 release force test. Among them, the first detection unit 11 may include a first detection module 111 and a first opening 112. The first opening 112 may be recessed from the outer peripheral surface of the first detection module 111 toward the central axis of the first detection module 111, so as to facilitate the positioning of the connecting shaft 22 and the first opening 112. The second detection unit 12 may include a second detection module 121 and a second opening 122. The second opening 122 may be recessed from the outer peripheral surface of the second detection module 121 toward the central axis of the second detection module 121. Thus, it is conducive to the positioning of the connecting shaft 22 and the second opening 122. The partial moving trajectory of the connecting shaft 22 of the universal joint 02 is located in the space surrounded by the first opening 112 and the space surrounded by the second opening 122. The diameter of the connecting shaft 22 may be less than or equal to the width of the first opening 112. The diameters of the housing 21 and the transmission part 23 may be respectively greater than the width of the first opening 112. The diameter of the connecting shaft 22 may be less than or equal to the width of the second opening 122. The diameters of the housing 21 and the transmission part 23 may be respectively greater than the width of the second opening 122. This facilitates the third drive unit to drive the connecting shaft 22 to easily move into the space surrounded by the first opening 112 and the space surrounded by the second opening 122. Since the diameters of the housing 21 and the transmission part 23 are respectively greater than the widths of the first opening 112 and the second opening 122, before the universal joint 02 is tested for its breakout force, the first detection module 111 may abut against the transmission part 23, and the second detection module 121 may abut against the housing 21, thereby making sufficient preparations in advance for the detection component 01 to test the breakout force of the universal joint 02, and there is no need to use additional positioning equipment to locate the position of the universal joint 02, thereby improving the efficiency of the breakout force test of the universal joint 02.

[0055] In step S20, based on the transmission part 23 of the universal joint 02 being close to the housing 21 of the universal joint 02 and abutting against the end of the first detection module 111 away from the second detection module 121, the second driving unit 14 drives the second detection module 121 to move away from the first detection module 111 until it abuts against the housing 21. Thus, sufficient preparations can be made for the release force test of the universal joint 02.

[0056] In step S30 , based on the abutment between the second detection module 121 and the housing 21 , the distance between the transmission part 23 and the housing 21 can be driven to increase to a set distance.

[0057] Step S40, based on the distance between the driving transmission part 23 and the housing 21 increasing to the set distance, the sensing unit 16 can obtain the maximum value of the driving force during the process of the distance between the driving transmission part 23 and the housing 21 increasing to the set distance. In this way, when the connecting shaft 22 is located in the space surrounded by the first opening 112 and the space surrounded by the second opening 122, the third driving unit drives the transmission part 23 of the universal joint 02 to abut against the end of the housing 21 of the first detection module 111 away from the second detection module 121, and the second driving unit 14 drives the second detection module 121 to move away from the first detection module 111 to abut against the housing 21, and then drives the transmission part 23 to increase the distance between the housing 21 to the set distance, thereby measuring the breakout force of the universal joint 02. In addition, it is possible to determine whether the breakout force test of the universal joint 02 is qualified by the maximum value of the driving force, so that after the universal joint 02 is put into use, the qualified breakout force can ensure that the universal joint 02 is reliably connected during normal use, and prevent loosening, falling off, etc. from occurring easily.

[0058] In this embodiment, step S30 of the method for measuring the disengagement force of the universal joint 02 may include steps S31 to S34, and steps S31 to S34 may be described in detail below.

[0059] Step S31, based on the abutment between the second detection unit 12 and the housing 21, the sensing unit 16 can obtain pressure data. The pressure data may include a first pressure value, a second pressure value, and a third pressure value. The first pressure value may include the pressure exerted on a portion of the first detection module 111 that is away from the second detection unit 12 and close to the first opening 112. The second pressure value may include the pressure exerted on one end of the first opening 112 close to the central axis of the first detection module 111. The third pressure value includes the pressure exerted on one end of the second opening 122 close to the central axis of the second detection module 121.

[0060] Step S32, based on the abnormal state of the pressure data, adjust the position of the universal joint 02 until the abnormal state is eliminated. When the pressure data is in an abnormal state, the detection component 01 will cause the universal joint 02 to measure the breakout force inaccurately, which will lead to the error in the qualified standard of the breakout force measurement of the universal joint 02. After being put into use, it may cause the universal joint 02 to fall off or become loose. Therefore, it is necessary to eliminate the abnormal state of the universal joint 02 to ensure the accuracy of the results of the breakout force test of the universal joint 02. Among them, the abnormal state may include a first abnormality, a second abnormality, and a third abnormality. The first abnormality may include a first pressure value less than a first pressure threshold, a second pressure value greater than or equal to a second pressure threshold, and a third pressure value greater than or equal to a third pressure threshold. The second abnormality may include a second pressure value less than a second pressure threshold or a third pressure value less than a third pressure threshold. The third abnormality includes a second pressure value less than the second pressure threshold and a third pressure value less than the third pressure threshold.

[0061] Step S33, based on the elimination of the abnormal state, the pressure data acquired by the sensing unit 16 is in a normal state, wherein the normal state may include the first pressure value being greater than or equal to the first pressure threshold, the second pressure value being greater than or equal to the second pressure threshold, and the third pressure value being greater than or equal to the third pressure threshold.

[0062] Step S34, based on the pressure data being in a normal state, the distance between the driving transmission part 23 and the housing 21 is increased to a set distance. When the pressure data is in a normal state, the distance between the driving transmission part 23 and the housing 21 is increased to a set distance, so that the detection component 01 can test the breakout force of the universal joint 02 more accurately, avoiding inaccurate detection results, which may cause the universal joint 02 to fall off or become loose after being put into use.

[0063] In other embodiments, the abnormal state may include a first abnormality, a second abnormality, a third abnormality, and a fourth abnormality. The fourth abnormality may include that the first pressure value is greater than the fourth pressure threshold, and the fourth pressure threshold is greater than the first pressure threshold. When the first pressure value is greater than the fourth pressure threshold, the detection component 01 issues an alarm, thereby controlling the first pressure value to be greater than or equal to the first pressure threshold and less than the fourth pressure threshold, avoiding the first pressure value from being too large, and thus making the pressure data normal.

[0064] In this embodiment, step S32 of the method for measuring the disengagement force of the universal joint 02 may include step S321, and step S321 may include step S3211 and step S3212. Step S3211 and step S3212 may be described in detail below.

[0065] Since the movement trajectory of the connecting shaft 22 of the universal joint 02 is partially located in the space surrounded by the first opening 112, as shown in FIG. Figure 3 As shown, the connecting shaft 22 usually needs to enter from the side of the first opening portion 112 away from the central axis of the first detection module 111. Long-term use may cause the upper end surface of the first detection module 111 close to the first opening portion 112 to gradually increase in wear from the end of the first opening portion 112 close to the central axis of the first detection module 111 to the end of the first opening portion 112 away from the central axis of the first detection module 111. Therefore, the sensor unit 16 detects that a first abnormal state will occur, and it is necessary to eliminate the abnormal state to prevent the connecting shaft 22 from moving toward the end of the first opening portion 112 away from the central axis of the first detection module 111 during the measurement of the detection component 01, which will eventually cause inaccurate results of the measurement of the disengagement force of the universal joint 02.

[0066] Step S3211: Based on the abnormal state being the first abnormality, the first driving unit 13 may drive the first detection module 111 to move away from the first opening 112 toward the second detection unit 12. Thus, the upper end surface of the first detection module 111 near the first opening 112 is parallel to the lower end surface of the transmission part 23, and further, the first detection module 111 moves away from the first opening 112 toward the second detection unit 12 until the first pressure value is greater than or equal to the first pressure threshold.

[0067] Step S3212, based on the first detection module 111 moving away from the first opening 112 side toward the second detection unit 12 until the first pressure value is greater than or equal to the first pressure threshold, the abnormal state is eliminated. In this way, the first detection module 111 moves away from the first opening 112 side toward the second detection unit 12, so that the universal joint 02 will not move from the upper end surface of the first detection module 111 close to the first opening 112 toward the direction away from the central axis of the first detection module 111 during the measurement of the universal joint 02 disengagement force, and the centerline axis of the universal joint 02 is kept as close to the set reference line as possible, thereby ensuring that the detection component 01 can accurately detect the universal joint 02 disengagement force. The set reference line can be a line connecting the center of the inscribed circle of the contact point between the first drive unit 13 and the first detection module 111 along the axial direction of the first detection module 111 and the center of the inscribed circle of the contact point between the second drive unit 14 and the second detection module 121 along the axial direction of the second detection module 121.

[0068] In this embodiment, step S32 of the method for measuring the disengagement force of the universal joint 02 may include step S322, and step S322 may include step S3221 and step S3222. Step S3221 and step S3222 may be described in detail below.

[0069] Step S3221, based on the abnormal state being the second abnormality, at this time the second pressure value is less than the second pressure threshold, or the third pressure value is less than the third pressure threshold, indicating that the end of the first opening 112 close to the set reference line is spaced apart from the connecting shaft 22, or the end of the second opening 122 close to the set reference line is spaced apart from the connecting shaft 22, that is, the central axis of the universal joint 02 is at a certain angle to the set reference line. Therefore, the first detection module 111 can be driven to rotate around the set reference line in the first direction, and the second detection module 121 can be driven to rotate around the set reference line in the second direction. The first direction is opposite to the second direction, so that through the rotation of the first detection module 111 and the second detection module 121, the second pressure value is greater than or equal to the second pressure threshold, and the third pressure value is greater than or equal to the third pressure threshold, that is, the central axis of the universal joint 02 coincides with the set reference line. In this way, when the distance between the driving transmission part 23 and the housing 21 increases to a set distance, since the first driving unit 13 and the second driving unit 14 move along the set reference line, the central axis of the universal joint 02 coincides with the set reference line, thereby ensuring the accuracy of the result of the detection component 01 measuring the breakout force of the universal joint 02. The set reference line can be a line connecting the center of the inscribed circle of the contact point between the first driving unit 13 and the first detection module 111 along the axial direction of the first detection module 111 and the center of the inscribed circle of the contact point between the second driving unit 14 and the second detection module 121 along the axial direction of the second detection module 121.

[0070] Step S3222: The second abnormality is eliminated based on the first detection module 111 and the second detection module 121 rotating at the set angles, so that the central axis of the universal joint 02 coincides with the set reference line, ensuring that the universal joint 02 is in a normal state, and the subsequent detection component 01 can accurately detect the result of the universal joint 02 disengagement force.

[0071] In this embodiment, step S32 of the method for measuring the disengagement force of the universal joint 02 may include step S323, and step S323 may include steps S3231 to S3233. S3233 may be described in detail below.

[0072] Step S3231, based on the abnormal state being the third abnormality, at this time the second pressure value is less than the second pressure threshold and the third pressure value is less than the third pressure threshold, the end of the first opening portion 112 close to the set reference line is spaced apart from the connecting shaft 22, and the end of the second opening portion 122 close to the set reference line is spaced apart from the connecting shaft 22, so that in the process of increasing the distance between the driving transmission part 23 and the shell 21 to the set distance, the force received by the side of the universal joint 02 close to the set reference line is different from the force received by the side of the universal joint 02 away from the set reference line, resulting in a radial force of the universal joint 02 and an axial force of the universal joint 02 between the transmission part 23 and the connecting shaft 22 when measuring the tensile force, and the radial force of the universal joint 02 will make the inner wall of the transmission part 23 and the outer wall of the connecting shaft 22 very tightly abutted, and the tight partial abutment may cause jamming, which will cause the result of the universal joint 02 disengagement force measurement to be inaccurate, and may even cause damage to the detection component 01 and the universal joint 02 component. Therefore, the first detection module 111 can be driven to move away from the first opening 112 toward the second detection unit 12 until the second pressure value is greater than or equal to the second pressure threshold and the third pressure value is greater than or equal to the third pressure threshold, so that the central axis of the universal joint 02 coincides with the set reference line.

[0073] Step S3232, based on the second pressure value being greater than or equal to the second pressure threshold and the third pressure value being greater than or equal to the third pressure threshold, drive the first detection module 111 to move away from the first opening 112 and toward the direction away from the second detection unit 12 until the end of the first detection module 111 close to the transmission part 23 is parallel to the end of the transmission part 23 close to the first detection module 111. In this way, by adjusting the first detection module 111, the universal joint 02 moves toward the end of the first opening 112 close to the set reference line, the end of the first opening 112 close to the set reference line abuts against the connecting shaft 22, and the end of the second opening 122 close to the set reference line abuts against the connecting shaft 22, thereby completing the correction of the position of the universal joint 02.

[0074] Step S3233: Based on the fact that the end of the first detection module 111 close to the transmission part 23 is parallel to the end of the transmission part 23 close to the first detection module 111, the third abnormality is eliminated. Thus, the state of the universal joint 02 is adjusted to a normal state, and the subsequent detection component 01 can accurately detect the result of the universal joint 02 disengagement force.

[0075] In other embodiments, the first detection module 111 may include a first abutting portion 1111 and a first limiting portion 1112. The first abutting portion 1111 may be drivingly connected to the first driving unit 13. The first opening portion 112 may be recessed from the outer peripheral surface of the first abutting portion 1111 toward the central axis of the first abutting portion 1111. The first limiting portion 1112 may be fixedly connected to an end of the first abutting portion 1111 away from the second detection module 121. The first limiting portion 1112 may be arranged on a side of the first abutting portion 1111 close to the first opening portion 112. The first limiting portion 1112 may gradually increase the axial dimension of the first abutting portion 1111 from the central axis of the first abutting portion 1111 to the outer peripheral surface of the first abutting portion 1111. When the second pressure value is greater than or equal to the second pressure threshold and the third pressure value is greater than or equal to the third pressure threshold, the first detection module 111 can be driven to move away from the first opening 112 and away from the second detection unit 12 until the end of the first abutting portion 1111 close to the transmission portion 23 is parallel to the end of the transmission portion 23 close to the first detection module 111. This makes the central axis of the universal joint 02 coincide with the set reference line, so that the detection component 01 can accurately detect the result of the universal joint 02 disengagement force.

[0076] In this embodiment, step S10 of the method for measuring the break-out force of the universal joint 02 may include step S11 and step S12, and step S11 and step S12 may be described in detail below.

[0077] Step S11 , based on the test instruction trigger, driving the universal joint 02 to move until the transmission part 23 abuts against the first opening 112 close to the central axis of the first detection module 111 .

[0078] Step S12, based on the transmission part 23 abutting against the central axis of the first opening 112 close to the first detection module 111, the universal joint 02 is driven to move toward the second detection module 121 until the end of the transmission part 23 close to the housing 21 abuts against the end of the first detection module 111 away from the second detection module 121. In this way, by first abutting the connecting shaft 22 against the end of the first opening 112 close to the central axis of the first detection module 111, and then abutting the lower end face of the transmission part 23 against the upper end face of the first detection module, it is possible to reduce the wear of the first detection module 111 and the transmission part 23 caused by the connecting shaft 22 of the universal joint 02 moving from the end of the first opening 112 away from the central axis of the first detection module 111 to the end of the first opening 112 close to the central axis of the first detection module 111 after the lower end face of the transmission part 23 abuts against the upper end face of the first detection module 111.

[0079] In this embodiment, step S40 of the method for measuring the disengagement force of the universal joint 02 may include step S41 and step S42, and step S41 and step S42 may be described in detail below.

[0080] Step S41, based on the distance between the driving transmission part 23 and the housing 21 increasing to a set distance, the first detection module 111 is driven to rotate around the set reference line in the first direction, and the second detection module 121 is driven to rotate around the set reference line in the second direction. The set reference line is a line connecting the center of the inscribed circle of the contact point between the first driving unit 13 and the first detection module 111 along the axial direction of the first detection module 111 and the center of the inscribed circle of the contact point between the second driving unit 14 and the second detection module 121 along the axial direction of the second detection module 121.

[0081] Step S42, based on driving the first detection module 111 to rotate around the set reference line in the first direction and the second detection module 121 to rotate around the set reference line in the second direction, obtain the maximum value of the driving force during the process of increasing the distance between the driving transmission part 23 and the housing 21 to the set distance. Therefore, when the distance between the driving transmission part 23 and the housing 21 increases to the set distance, since the first driving unit 13 and the second driving unit 14 move along the set reference line, it can be ensured that the central axis of the universal joint 02 coincides with the set reference line, that is, the position of the universal joint 02 is prevented from being offset, so that the detection component 01 can accurately detect the result of the universal joint 02 disengagement force.

[0082] In this embodiment, the present invention provides a universal joint 02 pull-out force measurement system, which can be used in any of the above embodiments, such as Figure 2 As shown, the universal joint 02 disengagement force measurement system may include a detection component 01 and a universal joint 02 .

[0083] like Figure 2As shown, the detection assembly 01 may include a first detection unit 11, a second detection unit 12, a first drive unit 13, a second drive unit 14, a base unit 15, and a third drive unit. The base unit 15 may be detachably connected to the first drive unit 13 and the second drive unit 14, respectively. The first drive unit 13 may drive the universal joint 02 to move to the end of the housing 21 of the universal joint 02 close to the transmission part 23 of the universal joint 02 and abut against the end of the first detection module 111 away from the second detection module 121. The second drive unit 14 may drive the universal joint 02 to move to the end of the housing 21 close to the transmission part 23 and abut against the end of the second detection module 121 away from the first detection module 111. The first detection unit 11 may include a first detection module 111 and a first opening 112. The first opening 112 may be recessed from the outer peripheral surface of the first detection module 111 toward the central axis of the first detection module 111. The first detection module 111 may be drivingly connected to the first drive unit 13. The second detection unit 12 may include a second detection module 121 and a second opening 122. The second opening portion 122 can be recessed from the outer peripheral surface of the second detection module 121 toward the central axis of the second detection module 121. The second detection module 121 can be driven and connected to the second drive unit 14. The first opening portion 112 and the second opening portion 122 can be assembled by utilizing the universal joint 02 and the detection component 01, so as to measure the disengagement force of the universal joint 02. The first detection module 111 can be arranged at a distance on the side of the second detection module 121 away from the base. The third drive unit can be detachably connected to the base unit 15. The third drive unit can move the universal joint 02 to complete the preliminary positioning with the detection component 01, so as to prepare for the disengagement force measurement of the universal joint 02.

[0084] like Figure 7 As shown, the universal joint 02 may include a housing 21, a connecting shaft 22, and a transmission part 23. The housing 21 may be fixedly connected to the connecting shaft 22. The housing 21 may protect part of the connecting shaft 22 from the influence of the external environment. The inner circumference of the transmission part 23 may be detachably connected to the outer circumference of the connecting shaft 22. The transmission part 23 may be arranged at one end of the connecting shaft 22 away from the housing 21. The transmission part 23 may transmit power after being assembled with other components. The diameter of the connecting shaft 22 may be less than or equal to the width of the first opening 112. The diameters of the housing 21 and the transmission part 23 may be respectively greater than the width of the first opening 112. The diameter of the connecting shaft 22 is less than or equal to the width of the second opening 122. Thus, the connecting shaft 22 may enter the enclosed space of the first opening 112 and the second opening 122. The diameters of the housing 21 and the transmission part 23 are respectively greater than the width of the second opening 122. In this way, when the universal joint 02 is tested, the housing 21 and the transmission part 23 can support the driving force of the first drive unit 13 and the second drive unit 14. Thus, it is measured whether the release force of the universal joint 02 meets the standard.

[0085] The universal joint 02 breakout force test system may include a detection state. The detection state may include that the end of the transmission part 23 close to the housing 21 moves under the drive of the third drive unit to abut against the end of the first detection module 111 away from the second detection module 121. The connecting shaft 22 is respectively located in the space surrounded by the first opening 112 and the space surrounded by the second opening 122. The second drive unit 14 drives the second detection module 121 to move away from the end of the first detection module 111 to abut against the end of the second detection module 121 close to the first detection module 111. Thereby, sufficient preparations can be made for the universal joint 02 breakout force test.

[0086] In this embodiment, if Figure 4 As shown, the first detection module 111 may include a first abutting portion 1111 and a first limiting portion 1112. The first abutting portion 1111 may be connected to the first driving unit 13 by driving. The first opening portion 112 may be recessed from the outer peripheral surface of the first abutting portion 1111 toward the central axis of the first abutting portion 1111. The first limiting portion 1112 may be fixedly connected to one end of the first abutting portion 1111 away from the second detection module 121. The first limiting portion 1112 may be arranged on a side of the first abutting portion 1111 close to the first opening portion 112. Since the movement trajectory of the connecting shaft 22 of the universal joint 02 is partially located in the space surrounded by the first opening portion 112, the upper end surface of the first abutting portion 1111 abuts against the lower end surface of the transmission portion 23, and long-term use may easily cause the first abutting portion 1111 to be damaged, so the first limiting portion 1112 may gradually increase the axial dimension of the first abutting portion 1111 from the central axis of the first abutting portion 1111 to the outer peripheral surface of the first abutting portion 1111. In this way, when the universal joint 02 moves from one end of the first opening portion 112 away from the central axis of the first detection module 111 toward the end of the first opening portion 112 close to the central axis of the first detection module 111, since the axial dimension of the first limiting portion 1112 along the first abutting portion 1111 gradually increases from the central axis of the first abutting portion 1111 to the outer peripheral surface of the first abutting portion 1111, the service life of the first detection module 111 can be increased.

[0087] In this embodiment, if Figure 4As shown, the second detection module 121 may include a second abutting portion 1211 and a second limiting portion 1212. The second abutting portion 1211 may be connected to the second driving unit 14 by driving. The second opening portion 122 may be recessed from the outer peripheral surface of the second abutting portion 1211 toward the central axis of the second abutting portion 1211. The second limiting portion 1212 may be fixedly connected to an end of the second abutting portion 1211 away from the first detection module 111. The second limiting portion 1212 may be arranged on a side of the second abutting portion 1211 close to the second opening portion 122. Since the movement trajectory of the connecting shaft 22 of the universal joint 02 is partially located in the space surrounded by the second opening portion 122, the lower end surface of the second abutting portion 1211 abuts against the upper end surface of the housing 21, and long-term use may easily cause the second abutting portion 1211 to be damaged, so the second limiting portion 1212 may gradually increase the axial dimension of the second abutting portion 1211 from the central axis of the second abutting portion 1211 to the outer peripheral surface of the second abutting portion 1211. In this way, when the universal joint 02 moves from one end of the second opening portion 122 away from the central axis of the second detection module 121 toward the end close to the central axis of the second detection module 121, since the axial dimension of the second limiting portion 1212 along the second abutting portion 1211 gradually increases from the central axis of the second abutting portion 1211 to the outer peripheral surface of the second abutting portion 1211, the service life of the second detection module 121 can be increased.

[0088] 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 method for measuring the breakout force of a universal joint, characterized in that: The universal joint breakout force measurement method comprises: Step S10, based on the triggering of the test instruction, drives the universal joint to move to the end of the shell of the transmission part of the universal joint close to the universal joint and abuts against the end of the first detection module away from the second detection module; wherein the first detection unit includes a first detection module and a first opening; the first opening is recessed from the outer peripheral surface of the first detection module toward the central axis of the first detection module; the second detection unit includes a second detection module and a second opening; the second opening is recessed from the outer peripheral surface of the second detection module toward the central axis of the second detection module; the moving trajectory of the connecting shaft part of the universal joint is located in the space surrounded by the first opening and the space surrounded by the second opening; the diameter of the connecting shaft is less than or equal to the width of the first opening; the diameters of the shell and the transmission part are respectively greater than the width of the first opening; the diameter of the connecting shaft is less than or equal to the width of the second opening; the diameters of the shell and the transmission part are respectively greater than the width of the second opening; Step S20, based on the transmission part of the universal joint close to the housing of the universal joint abutting against the end of the first detection module away from the second detection module, the second driving unit drives the second detection module to move in a direction away from the first detection module until it abuts against the housing; Step S30, based on the abutment between the second detection module and the housing, driving the distance between the transmission part and the housing to increase to a set distance; Step S40 , based on driving the distance between the transmission part and the housing to increase to the set distance, obtaining a maximum value of the driving force in the process of driving the distance between the transmission part and the housing to increase to the set distance.

2. A method for measuring the universal joint breakaway force according to claim 1, characterized in that: The step S30 comprises: Step S31, based on the abutment between the second detection unit and the shell, pressure data is obtained; wherein the pressure data includes a first pressure value, a second pressure value, and a third pressure value; the first pressure value includes the pressure exerted on a portion of the first detection module that is away from the second detection unit and close to the first opening; the second pressure value includes the pressure exerted on one end of the first opening close to the central axis of the first detection module; the third pressure value includes the pressure exerted on one end of the second opening close to the central axis of the second detection module; Step S32, based on the pressure data being in an abnormal state, adjusting the position of the universal joint until the abnormal state is eliminated; wherein the abnormal state includes a first abnormality, a second abnormality, and a third abnormality; the first abnormality includes that the first pressure value is less than a first pressure threshold, the second pressure value is greater than or equal to a second pressure threshold, and the third pressure value is greater than or equal to a third pressure threshold; the second abnormality includes that the second pressure value is less than the second pressure threshold or the third pressure value is less than the third pressure threshold; the third abnormality includes that the second pressure value is less than the second pressure threshold and the third pressure value is less than the third pressure threshold; Step S33, based on the elimination of the abnormal state, the pressure data is in a normal state; wherein the normal state includes that the first pressure value is greater than or equal to the first pressure threshold, the second pressure value is greater than or equal to the second pressure threshold, and the third pressure value is greater than or equal to the third pressure threshold; Step S34: based on the pressure data being in the normal state, driving the distance between the transmission part and the housing to increase to a set distance.

3. A method for measuring the universal joint breakaway force according to claim 2, characterized in that: The step S32 includes step S321, and the step S321 includes: Step S3211: based on the abnormal state being the first abnormality, driving the first detection module to move away from the first opening and toward the second detection unit; Step S3212: based on the first detection module moving away from the first opening toward the second detection unit until the first pressure value is greater than or equal to the first pressure threshold, the abnormal state is eliminated.

4. A method for measuring the universal joint breakout force according to claim 2, characterized in that: The step S32 includes step S322, and the step S322 includes: Step S3221, based on the abnormal state being the second abnormality, driving the first detection module to rotate in a first direction around a set reference line, and the second detection module to rotate in a second direction around a set reference line; the set reference line is a line connecting the center of an inscribed circle of a contact point between the first drive unit and the first detection module along the axial direction of the first detection module and the center of an inscribed circle of a contact point between the second drive unit and the second detection module along the axial direction of the second detection module; Step S3222: Based on the first detection module and the second detection module being rotated to set angles respectively, the second abnormality is eliminated.

5. A method for measuring the universal joint breakout force according to claim 2, characterized in that: The step S32 includes step S323, and the step S323 includes: Step S3231, based on the abnormal state being the third abnormality, driving the first detection module to move away from one side of the first opening toward the second detection unit until the second pressure value is greater than or equal to the second pressure threshold and the third pressure value is greater than or equal to the third pressure threshold; Step S3232, based on the second pressure value being greater than or equal to the second pressure threshold and the third pressure value being greater than or equal to the third pressure threshold, driving the first detection module to move away from the first opening toward the direction away from the second detection unit until an end of the first detection module close to the transmission part is parallel to an end of the transmission part close to the first detection module; Step S3233: based on the fact that one end of the first detection module close to the transmission part is parallel to one end of the transmission part close to the first detection module, the third abnormality is eliminated.

6. A method for measuring the universal joint breakaway force according to claim 1, characterized in that: The step S10 comprises: Step S11, based on the trigger of the test instruction, driving the universal joint to move until the transmission part and the first opening part abut against the central axis of the first detection module; Step S12, based on the transmission part abutting against the central axis of the first opening near the first detection module, driving the universal joint to move toward the second detection module until one end of the transmission part near the shell abuts against the end of the first detection module away from the second detection module.

7. A method for measuring the universal joint breakaway force according to claim 1, characterized in that: The step S40 comprises: Step S41, based on driving the distance between the transmission part and the housing to increase to the set distance, driving the first detection module to rotate around a set reference line in a first direction, and the second detection module to rotate around a set reference line in a second direction; the set reference line is a line connecting the center of an inscribed circle of a contact point between the first drive unit and the first detection module along the axial direction of the first detection module and the center of an inscribed circle of a contact point between the second drive unit and the second detection module along the axial direction of the second detection module; Step S42, based on driving the first detection module to rotate in a first direction around a set reference line and the second detection module to rotate in a second direction around a set reference line, obtain the maximum value of the driving force in the process of driving the distance between the transmission part and the shell to increase to the set distance.

8. A universal joint release force measurement system, characterized in that: The universal joint breakout force measurement system is applied to a universal joint breakout force measurement method as described in any one of claims 1 to 7, and the universal joint breakout force measurement system comprises: A detection component, the detection component includes a first detection unit, a second detection unit, a first driving unit, a second driving unit, a base unit, and a third driving unit; the base unit is detachably connected to the first driving unit and the second driving unit respectively; the first detection unit includes a first detection module and a first opening; the first opening is recessed from the outer circumference of the first detection module toward the central axis of the first detection module; the first detection module is drivingly connected to the first driving unit; the second detection unit includes a second detection module and a second opening; the second opening is recessed from the outer circumference of the second detection module toward the central axis of the second detection module; the second detection module is drivingly connected to the second driving unit; the first detection module is spaced apart and arranged on a side of the second detection module away from the base; the third driving unit is detachably connected to the base unit; A universal joint, the universal joint comprising a shell, a connecting shaft, and a transmission part; the shell is fixedly connected to the connecting shaft; the inner circumference of the transmission part is detachably connected to the outer circumference of the connecting shaft; the transmission part is arranged at an end of the connecting shaft away from the shell; the diameter of the connecting shaft is less than or equal to the width of the first opening; the diameters of the shell and the transmission part are respectively greater than the width of the first opening; the diameter of the connecting shaft is less than or equal to the width of the second opening; the diameters of the shell and the transmission part are respectively greater than the width of the second opening; The universal joint disengagement force testing system includes a detection state; the detection state includes the end of the transmission part close to the shell moving to abut against the end of the first detection module away from the second detection module under the drive of the third driving unit; the connecting shaft is respectively located in the space surrounded by the first opening portion and the space surrounded by the second opening portion; the second driving unit drives the second detection module to move away from the end of the first detection module to abut against the end of the second detection module close to the first detection module.

9. A universal joint breakaway force measurement system according to claim 8, characterized in that: The first detection module includes a first abutment portion and a first limiting portion; the first abutment portion is drivingly connected to the first driving unit; the first opening portion is recessed from the outer peripheral surface of the first abutment portion toward the central axis of the first abutment portion; the first limiting portion is fixedly connected to an end of the first abutment portion away from the second detection module; the first limiting portion is arranged on a side of the first abutment portion close to the first opening portion; the axial dimension of the first limiting portion along the first abutment portion gradually increases from the central axis of the first abutment portion to the outer peripheral surface of the first abutment portion.

10. A universal joint breakaway force measurement system according to claim 8, characterized in that: The second detection module includes a second abutment portion and a second limiting portion; the second abutment portion is drivingly connected to the second driving unit; the second opening portion is recessed from the outer peripheral surface of the second abutment portion toward the central axis of the second abutment portion; the second limiting portion is fixedly connected to an end of the second abutment portion away from the first detection module; the second limiting portion is arranged on a side of the second abutment portion close to the second opening portion; the axial dimension of the second limiting portion along the second abutment portion gradually increases from the central axis of the second abutment portion to the outer peripheral surface of the second abutment portion.

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