Clutch actuator unit detection device and detection method

Abstract

The application discloses a clutch actuator single detection device and a detection method, which comprises a support shaft, a front support plate, an oil distribution assembly, a clutch actuator and a rear support plate are sequentially arranged on the support shaft in the axial direction; one end of the oil distribution assembly is connected with the front support plate, and the other end extends into the clutch actuator; an internal distribution oil passage is arranged in the oil distribution assembly; a clutch oil passage, which is in communication with the distribution oil passage, is arranged in the clutch actuator; and the clutch oil passage is in communication with a piston cavity in the clutch actuator. The device can realize the single test of the clutch actuator, can adjust the parameters of the oil according to the target clutch actuator, can avoid the long control chain transmission, can facilitate the collection of various required data, can be more accurate in data collection, can directly control the clutch actuator, can not cause control deviation, can clearly collect fault points and can shorten the test time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of clutch detection, and relates to a clutch actuator single detection device and a detection method. BACKGROUND

[0002] In modern mechanical industry, clutch actuators play an important role in the normal work of different types of hydrodynamic transmission mechanical structures. Usually, the clutch actuators are controlled by the hydraulic system, and the clutch actuators gradually synchronize the two parts with different rotating speeds to the same rotating speed through the sliding friction between the friction elements with different rotating speeds, so as to realize the function of transmitting torque of the clutch actuators, and the clutch actuators are important components in the power transmission route of the hydrodynamic transmission mechanical structure, which ensures that the hydrodynamic transmission mechanical structure can work normally. However, in the actual work of the hydrodynamic transmission mechanical structure, because of unreasonable design, drastic change of working environment and frequent extreme working conditions and other influencing factors, the clutch actuators may be stuck, slow in response, damaged, and even the entire clutch actuators may fail, which seriously affects the normal function of the hydraulic control system and the normal transmission of power in the hydrodynamic transmission mechanical structure, and further causes serious failure of the entire hydrodynamic transmission mechanical structure.

[0003] Usually, the clutch actuators have many parts that cooperate with each other in the hydrodynamic transmission mechanical structure, and the communication relationship between the control oil circuits is complex. Different clutch actuators are associated with each other and influence each other when working, and the clutch actuators are closely related to the hydraulic control system. Usually, one power oil circuit connects and affects multiple clutch actuators. When the hydrodynamic transmission mechanical structure fails, it is difficult to analyze the fault of the specific clutch actuator and quickly locate the fault point. Only the entire hydrodynamic transmission mechanical structure can be disassembled to find and analyze the fault point, and after the fault is eliminated, the disassembled hydrodynamic transmission mechanical structure needs to be restored and tested again. In the process of repeated disassembly and restoration, not only new part damage and assembly errors will be caused, but also a large amount of labor cost and time cost will be wasted.

[0004] Now, to test the performance of the clutch actuator and its internal parts, the commonly used detection method at present is to test the clutch actuator in the hydraulic transmission mechanical structure, to take the hydraulic transmission mechanical structure as a whole test bench, to arrange monitoring points at the corresponding positions of each clutch actuator, to record and analyze a series of dynamic data of the hydraulic transmission mechanical structure, and to finally determine whether the performance of each clutch actuator assembly and internal parts meets the use requirements. However, this method still has some problems. First, there are many connections between the clutch actuator and the hydraulic transmission mechanical structure, and when the hydraulic transmission mechanical structure fails, it is difficult to accurately determine the occurrence position of the fault point, because the damage of the structure connected with the clutch mechanism will also appear as the damage of the clutch actuator. Secondly, in the detection, the clutch actuator cannot be directly controlled, and the control of the clutch actuator must be through the hydraulic transmission mechanical structure. In the control process, control deviation, multiple accumulations of control precision errors and errors in the control chain process may occur, which may cause the failure of the whole control process. At the same time, some parameters of the clutch actuator cannot be directly measured, such as the oil channel pressure, flow and temperature at the specific position, which can only be measured at the adjacent sampling points, which may cause large errors and be easily affected by other associated parts. Moreover, there are many internal parts in the clutch actuator, which are usually installed at the internal center position of the hydraulic transmission mechanical structure. When the parts need to be replaced, the whole hydraulic transmission mechanical structure must be disassembled, which causes difficulty in maintenance. SUMMARY

[0005] The present application aims to solve the problems in the prior art that it is difficult to analyze the specific clutch actuator, it is difficult to accurately determine the occurrence position of the fault point, it is difficult to directly control the clutch actuator, control deviation, multiple accumulations of control precision errors and errors in the control chain process may occur, which may cause the failure of the whole control process, it is difficult to directly measure some parameters of the clutch actuator, the measurement results may cause large errors, and the internal parts are inconvenient to replace. The present application provides a clutch actuator single detection device and a detection method.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A clutch actuator single detection device, characterized in that it comprises a support shaft, a front support plate, an oil distribution assembly, a clutch actuator and a rear support plate are sequentially arranged on the support shaft in the axial direction.

[0008] The oil distribution assembly is connected to the front support plate at one end and extends into the clutch actuator at the other end.

[0009] Further improvements of the present application are:

[0010] The oil distribution structure is provided with an oil inlet hole near the end of the front support plate, which is in communication with the distribution oil channel.

[0011] The oil distribution assembly includes an oil distribution structure, which is sleeved on the outside of the support shaft, and an oil passage distribution sealing sleeve is arranged inside the oil distribution structure and between the oil distribution structure and the support shaft.

[0012] The distribution oil channel is arranged inside the oil distribution structure.

[0013] The oil distribution structure is provided with a first mark on the end face near the front support plate, and the oil passage distribution sealing sleeve is provided with a second mark corresponding to the first mark on the end face near the front support plate.

[0014] An adjusting washer is arranged axially between the oil distribution assembly and the clutch actuator, and the adjusting washer is sleeved on the outside of the oil distribution assembly.

[0015] The end of the oil distribution assembly extending into the clutch actuator has a gap with the clutch actuator, and the gap forms a cavity.

[0016] The clutch actuator is provided with a pressure relief oil channel, which is in communication with the cavity.

[0017] The distribution oil channel is provided with two oil channels, which are independently arranged at intervals, and each distribution oil channel is in communication with a corresponding piston cavity.

[0018] One end of the support shaft is rigidly connected to the front support plate, and the other end is rigidly connected to the rear support plate.

[0019] A clutch actuator single body testing method, comprising the following steps:

[0020] The oil is introduced into the distribution oil channel, and the oil enters the piston cavity through the distribution oil channel and the clutch oil channel.

[0021] The oil further drives the movement of the piston inside the clutch actuator, simulating the working state of the clutch actuator in actual operation.

[0022] Observe the running state of the clutch actuator and determine whether there is any fault in each part.

[0023] Further, further comprising the following steps:

[0024] Select data collection points at any required measurement position on the clutch actuator, arrange detection equipment at the data collection points, and obtain real-time operation data of the data collection points through the detection equipment when the clutch actuator starts to operate.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The present application discloses a kind of clutch actuator single detection device, by front support plate and rear support plate cooperate with support shaft, it can be supported to single clutch actuator, simultaneously, oil distribution assembly is provided on support shaft, by oil distribution assembly, hydraulic oil can be sequentially delivered to the piston cavity of clutch actuator by oil passage, and further start clutch actuator test mechanism to test, when testing, the pressure and flow rate of delivered hydraulic oil can be adjusted according to actual working condition, the device disclosed in the present application realizes the separate test of clutch actuator, can adjust the parameter of oil of target clutch actuator, avoids long control chain transmission, facilitates the collection of each required data, the accuracy of data acquisition is higher, clutch actuator can be directly controlled, and control deviation does not appear, the device disclosed in the present application can measure the specific position of clutch actuator by external equipment, clear fault collection point, shorten test time, when finding fault and needing to replace parts, it can be directly replaced, without disassembling entire hydrodynamic transmission mechanical structure body, increase the convenience of maintenance.

[0027] Further, in the present application, one end of the oil distribution assembly is provided with an oil inlet hole, which facilitates the connection of external oil delivery equipment.

[0028] Further, in the present application, the oil distribution assembly includes an oil distribution structure, and the oil distribution structure cooperates with the oil distribution sealing sleeve to form a relatively independent sealing distribution oil passage.

[0029] Further, in the present application, the first mark cooperates with the second mark corresponding to the first mark, which improves the adaptability of the connection between the oil distribution structure and the oil distribution sealing sleeve during assembly, and avoids assembly deviation.

[0030] Further, in the present application, an adjusting gasket is axially arranged between the oil distribution assembly and the clutch actuator, which is used to adjust the axial gap inside the clutch actuator, and adjust the adaptability of the installation of different clutch actuators and the detection device.

[0031] Further, in the application, the end of the oil distribution assembly extending into the clutch actuator forms a cavity with the clutch actuator, the cavity communicates with the pressure relief oil passage on the clutch actuator, and the cavity is convenient for discharging the excess oil generated in the clutch actuator during the test.

[0032] Further, in the application, two oil distribution passages are arranged, and the two oil distribution passages are independently arranged, so that one piston cavity can be tested independently, or two piston cavities can be tested simultaneously according to the structure of the clutch actuator, the flexibility of the test is improved, the target point of the test is more clear, and the test time is shortened.

[0033] The application discloses a clutch actuator monomer test method, oil is introduced into an oil distribution assembly through an external device, and finally enters a piston cavity of a clutch actuator, and the clutch actuator is started to test, the method can simulate different working conditions by adjusting specific parameters of the oil, the clutch actuator can be tested independently, the local subsystem does not need to be tested in the overall hydrodynamic transmission mechanical structure, the influence of the structures of the adjacent parts of the clutch actuator is avoided, the accuracy and authenticity of the sampling data are improved, and the data obtained through some indirect measurement methods is prevented from being used to inversely deduce the data to be measured. In the test process, when an abnormality occurs, the test can be stopped at any time to check and eliminate the fault point.

[0034] Further, the method can select a data acquisition point on the clutch actuator and arrange a corresponding acquisition device at the acquisition point, can arrange the corresponding acquisition device according to the target data, can change the position of the data acquisition point according to the requirement, can change the range and frequency of the acquisition data, the reliability of the data acquisition is improved, and the fault point is more accurately determined. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without paying creative labor.

[0036] Fig. 1 is a schematic structural diagram of the application;

[0037] Fig. 2 is a side view of the application;

[0038] Wherein: 1-front support plate; 2-support shaft; 3-back support plate; 4-oil distribution structure; 5-sealing gasket; 6-D-shaped sealing ring; 7-first piston return spring group; 8-first clutch friction plate group; 9-elastic retainer; 10-back plate; 11-first clutch piston; 12-balancing piston; 13-outer hub; 14-rectangular sealing ring; 15-oil distribution sealing sleeve; 16-adjusting gasket; 17-connecting bolt; 18-locking bolt; 19-first oil hole; 20-second oil hole; 21-first clutch oil channel; 22-second clutch oil channel; 23-pressure relief oil channel; 24-first distribution oil channel; 25-second distribution oil channel; 26-first piston cavity; 27-second piston cavity; 28-piston seat; 29-outer hub shell; 30-second clutch piston; 31-second return spring group; 32-second clutch friction plate group. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0041] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] In addition, if the term "horizontal" is used, it is not meant to require absolutely horizontal surfaces, but rather can be slightly inclined. As such, the term "horizontal" is used to merely mean more horizontal than "vertical", and not necessarily perfectly horizontal.

[0044] In the description of the embodiments of the present application, it should also be noted that unless specifically defined and limited, if the terms "set", "install", "connect", "connect" appear, it should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] The present application will be further described in detail below with reference to the accompanying drawings:

[0046] Referring to Figs. 1-2 The present application discloses a kind of clutch actuator single detection device, entire clutch actuator is fixed on the flat ground or table top by front and rear two support frames and a support shaft, then it is locked and fixed by a locking bolt passing through the through hole on rear end support frame and cooperating with the threaded hole on support shaft, then it is controlled and tested by hydraulic control system, mainly separate clutch actuator from the whole hydrodynamic transmission mechanical structure, the performance of each component in clutch actuator is detected separately, avoid the data acquisition difficulty when it is tested in the whole hydrodynamic transmission mechanical structure body, test result is not accurate, disassembly and maintenance are troublesome and a series of problems, specific and include following structure:

[0047] Referring to Fig. 1 The embodiment of the present application discloses a kind of clutch actuator single detection device, including support shaft 2, the support shaft 2 is sequentially sleeved with front support plate 1, oil distribution assembly, clutch actuator, rear support plate 3 in axial direction;The oil distribution assembly is connected with front support plate 1 at one end, and the other end extends into the inside of clutch actuator, the inside of the oil distribution assembly is provided with distribution oil channel, the inside of the clutch actuator is provided with the same clutch oil channel as distribution oil channel, and the clutch oil channel communicates the piston cavity in clutch actuator.

[0048] Wherein, front support plate 1, rear support plate 3 and single clutch actuator inside are all provided with through hole, the support shaft 2 is sequentially penetrated through front support plate 1, rear support plate 3 and clutch mechanism, one end of support shaft 2 is connected with front support plate 1 by bolt, and the other end is connected with rear support plate 3 by locking bolt 18.

[0049] Further, in the embodiment of the present application, the front support plate 1 and the support shaft 2 are fixedly connected through the 7 connecting bolts 17.

[0050] Further, in the embodiment of the present application, the oil distribution structure 4 is arranged between the clutch actuator and the front support plate 1, the oil distribution sealing sleeve 15 is arranged inside the oil distribution structure 4, the oil distribution sealing sleeve 15 is sleeved outside the support shaft 2, the clutch actuator is sleeved outside the oil distribution structure 4, the clutch oil channel is arranged inside the clutch actuator, the clutch oil channel is communicated with the air plug cavity inside the single clutch mechanism, the distribution oil channel communicated with the clutch oil channel is arranged on the oil distribution structure 4, the oil sequentially passes through the distribution oil channel and the clutch oil channel on the oil distribution structure 4 and enters the piston cavity, and the specific structure of the oil channel is as follows:

[0051] The first distribution oil channel 24 and the second distribution oil channel 25 are independently arranged on the inner wall of the oil distribution structure 4, the first piston cavity 26 and the second piston cavity 27 are arranged inside the clutch actuator, the first clutch oil channel 21 and the second clutch oil channel 22 are arranged on the piston seat of the clutch actuator, the first clutch oil channel 21 is communicated with the first distribution oil channel 24 and the first piston cavity 26, and the second clutch oil channel 22 is communicated with the second distribution oil channel 25 and the second piston cavity 27.

[0052] Further, in the embodiment of the present application, the oil distribution sealing sleeve 15 is arranged inside the oil distribution structure 4, and the first distribution oil channel 24 and the second distribution oil channel 25 are independently sealed, so that the interference of the two oil channels during detection is avoided.

[0053] Further, in the embodiment of the present application, the pressure relief oil channel 23 is further arranged on the piston seat of the clutch actuator, and the pressure relief oil channel 23 is used for discharging excess oil.

[0054] Referring to Fig. 2 Further, in the embodiment of the present application, the first oil hole 19 and the second oil hole 20 are arranged on the end face of the oil distribution structure 4 close to the front support plate 1, the first oil hole 19 and the second oil hole 20 are respectively communicated with the first distribution oil channel 24 and the second distribution oil channel 25, when testing, the external oil conveying device is connected through the first oil hole 19 and the second oil hole 20 respectively, and the oil is conveyed.

[0055] Further, in the embodiment of the present application, the adjusting gasket 16 is sleeved outside the oil distribution structure, one end of the adjusting gasket 16 is connected with the oil distribution structure 4, the other end is connected with the clutch actuator, and the adjusting gasket 16 is used for adjusting the axial gap inside the clutch actuator.

[0056] Further, the specific structure of the clutch execution structure in the embodiment of the application comprises:

[0057] The piston seat 28 is sleeved on the outer side of the oil path distribution structure 4, the outer side of the piston seat 28 is sleeved with an outer hub shell 29, and the outer hub shell 29 and the piston seat 28 together constitute the outer hub 13, the first clutch piston 11 and the second clutch piston 30 are axially sleeved on the piston seat 28 in sequence, and the first clutch piston 11 is axially sleeved with the outer hub shell 30.

[0058] Further, the first clutch piston 11 is axially sleeved with the first piston return spring group 7 and the back plate 10 on the outer side, the back plate 10 provides support for the first piston return spring 7, the first piston return spring 7 is provided with the first clutch friction plate group 8 at the end away from the back plate 10, the first clutch friction plate group 8 is assembled in the spline groove corresponding to the spline groove provided in the outer hub shell 29, and the both ends of the first clutch friction plate group 8 are provided with corresponding spring retainer rings 9 for axial positioning of the parts to prevent the parts from moving.

[0059] Further, the second clutch piston 30 is axially sleeved with the second piston return spring group 31 and the balance piston 12 on the outer side in sequence, and the second clutch friction plate group 32 is axially sleeved on the piston seat 28, and the both ends of the second clutch friction plate group 32 are provided with elastic retainer rings.

[0060] Further, three rectangular sealing rings 14 are axially sleeved on the outer side of the oil path distribution structure 4 in sequence, and the D-shaped sealing rings 6 are sleeved on the first clutch piston 11, the piston seat 28, the second clutch piston 30 and the balance piston 12.

[0061] The assembly principle of the embodiment of the application is as follows:

[0062] First, five D-shaped sealing rings 6 of different sizes are installed in the sealing ring grooves of the first clutch piston 11, the second clutch piston 30, the clutch outer hub 13 and the balance piston 12 according to the different inner diameters, so as to ensure that there is no D-shaped sealing ring 6 loose or misassembled.

[0063] Secondly, the second clutch piston 30 with the installed D-shaped sealing ring 6 is put into the clutch outer hub 13, and then the first clutch piston 11 with the installed D-shaped sealing ring 6 is put into the inside of the second clutch piston 30, and it should be ensured that the D-shaped ring is not cut during the process, and then the two groups of piston return spring groups are put in sequence.

[0064] Further, the balance piston 12 with the installed D-shaped sealing ring 6 is installed on the second return spring set 31, and the back plate 10 is pressed, and the balance piston 12 and the back plate 10 are axially positioned by the elastic stop ring 9. At this time, the two sets of return spring sets are in a compressed state, and the elastic stop ring 9 is installed to ensure that it is installed in the corresponding clamping groove to prevent axial movement.

[0065] Further, one friction plate of the first clutch friction plate set 8 is installed in the corresponding clamping groove, and the first clutch friction plate set 8 is assembled to the first clutch piston 11. The second clutch friction plate set 32 is assembled to the second clutch piston 30.

[0066] Note that during assembly, do not miss and misassemble, and then axially position by the elastic stop ring 9. The elastic stop ring 9 is installed to ensure that it is installed in the corresponding clamping groove and prevents axial movement.

[0067] Further, the three rectangular sealing rings 14 are installed in the sealing oil distribution structure 4 oil groove, and the oil distribution sealing sleeve 15 is pressed into the sealing oil distribution structure 4 inner hole.

[0068] Further, when the oil distribution sealing sleeve 15 is pressed into the sealing oil distribution structure 4, the notch on the end face of the oil distribution sealing sleeve 15 should be aligned with the notch on the end face of the sealing oil distribution structure 4 to ensure that the two end faces are installed in the same plane. The notch mentioned here is the second mark and the notch is the first mark.

[0069] Further, the sealing oil distribution structure 4 with the rectangular sealing ring 14 is installed in the center hole of the clutch actuator.

[0070] Further, the adjusting washer 16 is placed on the left end face of the clutch actuator, and the oil distribution structure 4 with the pressed oil distribution sealing sleeve 15 is hoisted into the inner hole of the clutch actuator. Note that during assembly, do not tilt or force assemble to prevent damage to the sealing ring. The adjusting washer 16 here mainly ensures that the oil groove of the oil distribution structure 4 is aligned with the oil channel on the clutch outer hub 13, so that the oil path to each hydraulic piston 11 is unobstructed.

[0071] Further, the sealing gasket 5 is installed between the front support plate 1 and the oil distribution structure 4 to prevent power oil leakage from the joint surface therebetween. Specifically, the oil hole and bolt hole on the sealing gasket 5 are aligned with the corresponding oil hole and bolt hole on the oil distribution structure 4, and then the front support plate 1 is pressed onto the sealing gasket 5, and the front support plate 1 is fixed on the oil distribution structure 4 by the 7 connecting bolts 17.

[0072] Further, the assembled clutch mechanism is fixedly installed on the front support plate 1 and the rear support plate 3, and is locked through the locking bolt 18 and the thread on the support shaft 2.

[0073] Further, the assembled clutch test system should be placed on a flat table or ground as a whole to avoid inclination.

[0074] Further, the control oil is communicated from the first oil hole 19 to the first clutch piston cavity 26 through the first clutch oil channel 21 through an external pipeline, the movement of the first clutch piston 11 is controlled, and the first clutch friction plate set 8 is pressed.

[0075] Further, the control oil is communicated from the second oil hole 20 to the first clutch piston cavity 27 through the second clutch oil channel 22 through an external pipeline, the movement of the second clutch piston 30 is controlled, and the second clutch friction plate set 32 is pressed.

[0076] Further, by controlling the flow and pressure of the external pipeline, the working state of the clutch actuator in different working conditions in the hydraulic transmission mechanical structure is simulated, and the performance of the clutch actuator assembly and the internal parts is evaluated from multiple dimensions.

[0077] Further, by changing the environmental temperature, oil cleanliness and other external factors, whether the performance of the clutch actuator in some special extreme conditions is still good is tested.

[0078] Further, the excess oil is discharged from the test system through the oil channel 23 during the test.

[0079] Further, the data acquisition position and data amount are adjusted at any time according to the test situation, so that different parts in the clutch actuator can be adjusted and replaced.

[0080] Further, by changing the size of the adjusting gasket 16, other parts of the test system do not need to be replaced, and the clutch actuator of other sizes can be tested.

[0081] Further, if the shape of the hydraulic piston changes greatly, only the clutch outer hub 13 is placed in the hydraulic piston part according to the shape of the hydraulic piston after the change, and then is pressed and assembled on the oil channel part of the clutch outer hub 13.

[0082] The embodiment of the application further discloses a clutch actuator single detection method, comprising the following steps:

[0083] The oil is introduced into the distribution oil channel, and the oil enters the piston cavity through the distribution oil channel and the clutch oil channel;

[0084] The test mechanism of the clutch actuator is started, i.e., the oil delivery device is started, the oil drives the piston to move, and the working state of the clutch actuator in actual operation is simulated;

[0085] The running state of the clutch actuator is observed, and whether each part has a fault is judged.

[0086] Further, data acquisition points are selected at any required measurement positions on the clutch actuator, detection devices are arranged at the data acquisition points, and real-time running data of the data acquisition points are acquired by the detection devices when the clutch actuator starts to run.

[0087] Specifically, the application discloses a specific detection method:

[0088] After the single clutch actuator is assembled with the detection device, the required power oil in the hydraulic system is connected to the test system of the single clutch actuator through external pipeline connection, the first oil hole 19 is connected with the first clutch oil channel 21, the power oil fills the piston cavity to increase the pressure, and then the first clutch piston 11 is pushed to compress the first clutch friction plate set 8, when the oil pressure in the piston cavity decreases, the first clutch piston 11 is reset under the action of the first piston return spring set 7; similarly, the second oil hole 20 is connected with the second clutch oil channel 22, the power oil fills the piston cavity to increase the pressure, and then the second clutch piston 30 is pushed to compress the second clutch friction plate set 32, when the oil pressure in the piston cavity decreases, the second clutch piston 30 is reset under the action of the second piston return spring set 31. The pressure relief channel 23 can timely discharge the excess oil in the test process to the outside of the system, so that the excessive oil in the system is avoided, and the test result is affected.

[0089] Through the cyclic reciprocating movement of the two hydraulic pistons, the corresponding clutch friction plate and the opposite plate set are continuously in the combined-disengaged-combined state, the working state of the hydrodynamic transmission mechanical structure in actual operation is simulated, and the performance of each part of the clutch actuator and the assembly performance are tested.

[0090] During detection, the connection form of the external pipeline joint can be selected according to actual test conditions, and the connection form of the external pipeline joint adopted in the application is a threaded hole connection.

[0091] Further, different pressure and flow tests can be performed according to different use conditions of the hydrodynamic transmission mechanical structure, and specific frequency fatigue durability tests can also be performed by automatically controlling required parameters through a program.

[0092] Further, in the detection, the data collection can be directly arranged on the external pipeline or collected in the test system of the clutch actuator unit, such as punching and arranging the data collection point on the clutch outer hub 13, and arranging the collection device at the collection point according to the target data to be collected, which can be a sensor.

[0093] Further, in the detection, the data collection point of the present application is arranged on the external pipeline, and if an abnormal condition occurs during the test, the machine can be stopped for checking and finding the fault point, facilitating the disassembly of the clutch actuator test system and the replacement and troubleshooting of the internal parts of the system. After the test is completed, the state of the parts inside the clutch actuator is evaluated and analyzed, and the test results are further used to determine the subsequent optimization and improvement design scheme. This optimization and improvement process does not depend on the state of the hydrodynamic transmission mechanical structure, and when verification is needed, separate testing is performed for preliminary test analysis, which breaks the constraint of the verification progress of the hydrodynamic transmission mechanical structure, effectively shortens the product development cycle, and saves the development cost.

[0094] The present application also discloses another embodiment, which is different from the above embodiment in that the first clutch piston 11, the balance piston (12), the D-shaped sealing ring (6) installed on the first clutch piston 11, the balance piston (12), the clutch outer hub (13), the group of piston return springs (7), the first clutch friction plate group 8, and the two elastic retainer rings 9 in the clutch actuator unit test system of embodiment 1 are removed. The states of the remaining parts are consistent with those of embodiment 1, and only the second clutch piston 30 and the second clutch friction plate group 32 in the clutch actuator are tested separately. The measurement method and precautions are consistent with those of embodiment 1. Therefore, the present application can selectively test the parts in the clutch actuator separately, as long as the corresponding oil holes and oil channels are unobstructed and the piston cavity is connected. In this embodiment, the second clutch piston 30, the back plate 10, and the two D-shaped sealing rings 6 installed on the second clutch piston 30 and the clutch outer hub 13, the second piston return spring group 31, the second clutch friction plate group 32, and the two elastic retainer rings 9 can also be removed. Only the first clutch piston 11 and the first clutch friction group 8 can be tested, and at this time, only the power oil supply end of the uninstalled hydraulic piston needs to be disconnected to input power oil. If the power oil input end is not blocked due to operation error, normal testing can still be performed, and the excess oil will be discharged from the pressure relief oil channel 23, but the testing at this time will cause waste of power oil.

[0095] In addition, the clutch actuator monomer test system provided by the application can test different sizes of clutch actuators without replacing a large number of parts, only needs to replace adjustment shims of different thicknesses and the screwing depth of locking bolts, and can test different sizes of clutch actuator parts as long as the oil tank on the oil distribution structure is aligned with the oil channel on the clutch outer hub. If the shape of the hydraulic piston in the clutch actuator changes greatly, the placement hydraulic part of the clutch outer hub can be adjusted according to the shape, and then the oil channel part of the clutch outer hub is pressed and assembled, so that the sealing effect of the piston cavity can push the hydraulic piston to move axially.

[0096] The support and connection device used in the detection device and method disclosed in the embodiment of the application has a small number of auxiliary parts, a simple structure, low cost, simple fixing connection and assembly during clutch test, and is convenient for disassembly and maintenance of testers, can be tested independently of the hydrodynamic transmission mechanical structure, avoids testing of a local subsystem in the overall hydrodynamic transmission mechanical structure, avoids the influence of the structure of the adjacent parts of the clutch actuator through targeted testing, improves the accuracy and authenticity of the sampling data, and does not need to obtain the data to be measured through some indirect measurement methods; the application can also test different sizes of clutch actuators, only needs to replace the size of the adjustment shims, adjust the screwing depth of the locking bolts, and change the shape of the part of the clutch outer hub on which the hydraulic piston is placed to adjust the entire test system, can adjust the accuracy of the measuring equipment of the measuring system according to different design requirements, uses the simplest test method to further save costs, can change the position of data collection, the range and frequency of data collection during the test process according to the needs of on-site testing, has more flexibility compared with the traditional test system, can be easily disassembled, problems can be checked and the corresponding faulty parts can be replaced when a fault or problem is found during the test process, and a large amount of labor cost and time cost for maintaining the test system is saved.

Claims

1. A device for detecting a single clutch actuator, characterized in that, The support shaft (2) is sequentially sleeved with a front support plate (1), an oil distribution assembly, a clutch actuator and a rear support plate (3) in sequence in the axial direction. One end of the oil distribution assembly is connected to the front support plate (1), and the other end extends into the clutch actuator, the inside of the oil distribution assembly is provided with a distribution oil channel, the inside of the clutch actuator is provided with a clutch oil channel in communication with the distribution oil channel, and the clutch oil channel is in communication with a piston cavity in the clutch actuator. The oil distribution assembly comprises an oil distribution structure (4) which is sleeved outside the support shaft (2), and the inside of the oil distribution structure (4) is provided with an oil passage distribution sealing sleeve (15) which is arranged between the oil distribution structure (4) and the support shaft (2). The distribution oil channel is arranged in the inside of the oil distribution structure (4). A first distribution oil channel (24) and a second distribution oil channel (25) are arranged on the inside wall of the oil distribution structure (4), the first distribution oil channel (24) and the second distribution oil channel (25) are independently arranged in a spaced manner, a first piston cavity (26) and a second piston cavity (27) are arranged in the inside of the clutch actuator, a first clutch oil channel (21) and a second clutch oil channel (22) are arranged on the piston seat of the clutch actuator, the first clutch oil channel (21) is in communication with the first distribution oil channel (24) and the first piston cavity (26), and the second clutch oil channel (22) is in communication with the second distribution oil channel (25) and the second piston cavity (27). The parameters of the oil are adjusted to simulate different working conditions, and the clutch actuator is tested.

2. The clutch actuator unit detection apparatus according to claim 1, wherein The oil distribution structure is provided with an oil inlet hole at one end close to the front support plate (1), and the oil inlet hole is in communication with the distribution oil channel.

3. The clutch actuator unit detection apparatus according to claim 1, wherein The oil distribution structure (4) is provided with a first mark on the end face close to the front support plate (1), and the oil passage distribution sealing sleeve (15) is provided with a second mark corresponding to the first mark on the end face close to the front support plate (1).

4. The clutch actuator unit detection apparatus according to claim 1, wherein An adjusting gasket (16) is arranged axially between the oil distribution assembly and the clutch actuator, and the adjusting gasket (16) is sleeved outside the oil distribution assembly.

5. The clutch actuator unit detection apparatus according to claim 1, wherein A gap is formed between the end of the oil distribution assembly extending into the clutch actuator and the clutch actuator. The clutch actuator is provided with a pressure relief oil channel (23) in communication with the cavity.

6. A clutch actuator unit detection apparatus according to claim 1, wherein The distribution oil channel is provided with two distribution oil channels which are independently arranged in a spaced manner, and each distribution oil channel is in communication with a corresponding piston cavity.

7. The clutch actuator unit detection apparatus according to claim 1, wherein One end of the support shaft (2) is rigidly connected to the front support plate (1), and the other end is rigidly connected to the rear support plate (3).

8. A method of testing a clutch actuator unit based on the device of claim 1, characterized by The method comprises the following steps: The oil is introduced into the distribution oil channel, and the oil enters the piston cavity through the distribution oil channel and the clutch oil channel; The oil drives the piston in the clutch actuator to move, simulating the working state of the clutch actuator in actual operation; The running state of the clutch actuator is observed to determine whether each part has a fault.

9. A method of testing a clutch actuator unit according to claim 8, wherein, The method further comprises the following steps: Any required measurement position on the clutch actuator selects a data acquisition point, and a detection device is arranged at the data acquisition point, and when the clutch actuator starts to operate, real-time operation data of the data acquisition point is acquired through the detection device.

Images