Clutch actuator test tool

Abstract

The utility model discloses a clutch actuator test tool, which comprises a rack, a cylinder, a piston rod, a clutch actuator and a test system, and is characterized in that the rack is composed of a bottom plate, a pair of side plates and a cross beam, and the side plates are provided with positioning hole groups; the piston rod is connected with the actuator through a bolt assembly; the testing system comprises an oil can liquid level sensor, a piston rod pressure sensor and testing software, the tool restores a vehicle-mounted installation posture through the rigid rack, the air cylinder drives the piston rod to simulate load action, and the testing software collects full parameters through an ECU adaptation protocol and generates a data log. The problems of working condition simulation distortion, incomplete parameters, poor adaptability and low data utilization rate of an existing tool are solved, and the test accuracy and universality are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive transmission system component testing technology, specifically to a clutch actuator testing fixture. Background Technology

[0002] The clutch actuator is a core component of a vehicle's transmission system, and its operational stability directly affects the smoothness of gear shifting, power transmission efficiency, and driving safety. To ensure the factory quality and performance reliability of the clutch actuator, it is necessary to simulate its actual on-board operating conditions using bench testing equipment to comprehensively test its operational performance and status parameters.

[0003] Existing clutch actuator testing fixtures have many technical defects and are unable to meet the requirements for accurate testing:

[0004] The accuracy of the operating condition simulation is insufficient. Traditional tooling frames are mostly single fixed structures, which cannot reproduce the installation posture and rigid constraints of the clutch actuator in the vehicle environment. In addition, the cylinder drive method is single, which makes it difficult to simulate the dynamic load under different driving scenarios. This results in a large deviation between the test results and the actual vehicle operating conditions. At the same time, the tooling has poor versatility and cannot be adapted to the testing needs of different models of clutch actuators. Utility Model Content

[0005] This utility model aims to solve the technical problems existing in the prior art and provides a clutch actuator testing fixture, including a frame, a cylinder, a piston rod, a clutch actuator, and a testing system; the clutch actuator is mounted on the frame, the cylinder is driven to the piston rod, and the piston rod is driven to the clutch actuator; the cylinder drives the piston rod to reciprocate linearly to drive the clutch actuator to move; the testing system is used to collect various data of the clutch actuator.

[0006] The frame includes a base plate, a pair of side plates and a crossbeam. The clutch actuator and cylinder are respectively mounted on a side plate. The base plate is connected to the bottom of the pair of side plates, and the crossbeam is connected to the top of the pair of side plates.

[0007] The side plate is provided with a set of positioning holes for mounting a clutch actuator or cylinder;

[0008] The crossbeams are fixedly connected to each side plate with screws.

[0009] Furthermore, the end of the piston rod furthest from the cylinder is connected to the clutch actuator via a bolt assembly, which includes a bolt, a nut, and a lock washer.

[0010] Furthermore, the bolt assembly has a coaxial positioning countersunk hole at the connection end between the bolt and the piston rod.

[0011] Furthermore, the cylinder is a pneumatic cylinder.

[0012] Furthermore, the cylinder is connected to a pressure regulating valve to adjust the output driving force of the piston rod.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The rigid frame is composed of a base plate, side plates, and crossbeams fixed with screws. It can effectively offset the vibration generated by the reciprocating motion of the cylinder, prevent the actuator installation position from shifting, and accurately reproduce the vehicle-mounted installation posture and rigid constraints. The positioning hole group on the side plate can flexibly adjust the installation position of the clutch actuator. It can be adapted to different models of test objects without changing the main frame, greatly improving the tooling versatility.

[0015] 2. The pressure regulating valve equipped in the cylinder can adjust the piston rod output driving force in real time to simulate different vehicle load scenarios, thereby improving testing efficiency and the accuracy of working condition simulation. Attached Figure Description

[0016] Figure 1 This is a perspective view of the clutch actuator test fixture in the embodiments of this application.

[0017] Reference numerals: 1-Frame, 11-Base plate, 12-Side plate, 13-Crossbeam, 2-Cylinder, 3-Piston rod, 4-Clutch actuator, 5-Pressure sensor, 6-Pressure regulating valve. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] The clutch actuator testing fixture provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0021] Example 1

[0022] This application provides a clutch actuator testing fixture, including a frame 1, a cylinder 2, a piston rod 3, a clutch actuator 4, and a testing system. The clutch actuator 4 is mounted on the frame 1. The cylinder 2 is driven by the piston rod 3, and the piston rod 3 is driven by the clutch actuator 4. The cylinder 2 drives the piston rod 3 to reciprocate linearly to drive the clutch actuator 4 to move. The testing system is used to collect various data of the clutch actuator 4.

[0023] In this embodiment of the application, the testing system includes a liquid level sensor mounted on the oil reservoir of the clutch actuator 4, a pressure sensor 5 on the piston rod 3, and testing software. The testing software is used to collect and test the torque, oil reservoir level, real-time forward and backward position, acceleration signal, working pressure detected by the pressure sensor 5, oil temperature, speed-related signal, solenoid valve control signal, and action response time of the clutch actuator 4.

[0024] like Figure 1 As shown, due to the above structure, before the tooling is started, the clutch actuator 4 is first fixed to the corresponding position of the frame 1 with fasteners so that the installation angle and fixing rigidity of the actuator are completely consistent with the vehicle state. After starting, the drive system of cylinder 2 is turned on, pushing the piston to drive the piston rod 3 to reciprocate linearly along the axis. The stroke, speed and frequency of this movement are matched with the actual action rhythm of the vehicle clutch actuator 4 in the vehicle scenario through a preset program, so as to simulate its vehicle load conditions.

[0025] At the same time, the level sensor of the clutch actuator 4 oil reservoir and the pressure sensor 5 on the piston rod 3 simultaneously transmit signals to the test software. The test software obtains the status signals related to the actuator's operation through various interfaces, and performs protocol conversion and data integration on the raw signals collected by the sensors through preset signal interfaces and communication protocols (such as CAN bus protocol) consistent with the vehicle ECU, ensuring that the dimensions and accuracy of the collected parameters are consistent with the vehicle ECU detection standards, and records the actuator's action response process.

[0026] All signals are collected and integrated synchronously to form a real-time data stream, realizing a full-chain simulation test of "vehicle installation posture + vehicle load action + ECU equivalent state acquisition", which solves the problem of large deviation between traditional bench testing and actual vehicle working conditions.

[0027] Example 2

[0028] In this embodiment, in addition to the structural features of the aforementioned embodiments, the frame 1 includes a base plate 11, a pair of side plates 12 and a crossbeam 13. The clutch actuator 4 and the cylinder 2 are respectively mounted on a side plate 12. The base plate 11 is connected to the bottom of the pair of side plates 12, and the crossbeam 13 is connected to the top of the pair of side plates 12.

[0029] In this embodiment of the application, the side plate 12 is provided with a group of positioning holes for mounting the clutch actuator 4 or the cylinder 2.

[0030] In this embodiment of the application, the crossbeam 13 is fixedly connected to each side plate 12 by screws.

[0031] like Figure 1 As shown, due to the above structure, during tooling assembly, a pair of side plates 12 are vertically fixed to the base plate 11 by bolts, and the crossbeam 13 is locked to the top of the side plates 12 by screws to form a frame-type rigid structure. During operation, this structure can offset the vibration generated by the reciprocating motion of the cylinder 2 and prevent the actuator installation position from shifting.

[0032] If different models of clutch actuators 4 are tested, the installation position of the actuator can be adjusted through the positioning hole group on the side plate 12 without replacing the main body of the frame 1. When the piston rod 3 is connected to the actuator, the coaxial positioning countersunk hole will guide the transmission axes of the two to be completely aligned. During operation, the driving force of the piston rod 3 is transmitted along the axis without radial off-center load, ensuring that the actuator's movement trajectory is consistent with the vehicle's on-board state.

[0033] Throughout the test, the rigid structure of frame 1 maintained the relative position of the actuator and cylinder 2, providing a structural basis for accurately simulating vehicle operating conditions.

[0034] Example 3

[0035] In this embodiment, in addition to the structural features of the aforementioned embodiments, the end of the piston rod 3 away from the cylinder 2 is connected to the clutch actuator 4 via a bolt assembly, the bolt assembly including a bolt, a nut and an anti-loosening washer.

[0036] In this embodiment of the present application, the bolt assembly has a coaxial positioning countersunk hole at the connection end between the bolt and the piston rod 3.

[0037] like Figure 1 As shown, due to the above structure, before the test, the end of the piston rod 3 away from the cylinder 2 is aligned with the execution end interface of the clutch actuator 4, and the connection is completed by bolts, nuts and anti-loosening washers. In operation, this method can stably transmit the reciprocating driving force of the piston rod 3; at the same time, the anti-loosening washers can offset the loosening of the connection caused by the test vibration, and ensure the reliability of the transmission connection.

[0038] When it is necessary to change the test object, the piston rod 3 and the actuator can be separated simply by loosening the nut, without disassembling the cylinder 2 or the frame 1; during high-frequency testing, the anti-loosening washer continuously maintains the preload of the connection to avoid increasing the transmission clearance and ensure the stable operation of the test process.

[0039] Example 4

[0040] In this embodiment, in addition to the structural features included in the foregoing embodiments, the cylinder 2 is a pneumatic cylinder.

[0041] like Figure 1 As shown, due to the above structure, after the tooling is started, the drive circuit of the pneumatic cylinder is connected, pushing the piston to drive the piston rod 3 to move in the extension direction, and simultaneously driving the clutch actuator 4 to perform the "disengagement" action; when the circuit is reversed, the piston drives the piston rod 3 to retract, and the actuator performs the "engagement" action - the response rhythm of this reversal process can match the action rhythm of the vehicle clutch actuator 4, simulating the rapid action when the vehicle shifts gears.

[0042] Meanwhile, the pneumatic drive method is easy to maintain and suitable for long-term, high-frequency bench testing scenarios, improving the testing efficiency and practicality of the tooling.

[0043] Example 5

[0044] In this embodiment, in addition to the structural features of the aforementioned embodiments, the cylinder 2 is connected to a pressure regulating valve 6 for adjusting the output driving force of the piston rod 3.

[0045] like Figure 1 As shown, due to the above structure, before the test, according to the vehicle load requirements corresponding to the clutch actuator 4 to be tested, the pressure regulating valve 6 connected to the cylinder 2 is adjusted to change the output intensity of the driving power so that the output force of the piston rod 3 is adapted to the load conditions of the actuator.

[0046] During operation, if it is necessary to simulate the load state under different vehicle scenarios, the pressure regulating valve 6 can be finely adjusted in real time to synchronously change the output force of the piston rod 3, so as to realize the simulation of multiple scenarios of vehicle load without stopping the machine to replace the drive components, thus broadening the applicability of the tooling.

[0047] Example 6

[0048] In this embodiment, in addition to the structural features included in the foregoing embodiments, the testing software can generate data logs by arranging all collected parameters in the order of the test time.

[0049] like Figure 1 As shown, due to the above structure, after the test software starts, it automatically initializes the data log module and assigns a unique identifier to this test; during operation, the software automatically associates each set of status signals collected with the current test time and stores them in the log file in a fixed format.

[0050] When an abnormal state occurs during testing, the software will mark the corresponding time point in the log. After the test is completed, the details of the actuator's action state during the test can be traced back through the log. If multiple rounds of testing are conducted, the recorded content of different logs can be compared to analyze the performance change trend of the actuator and provide support for its reliability assessment.

[0051] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0052] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A clutch actuator testing fixture, characterized in that, It includes a frame, a cylinder, a piston rod, a clutch actuator, and a testing system; the clutch actuator is mounted on the frame, the cylinder is driven by the piston rod, the piston rod is driven by the clutch actuator, the cylinder drives the piston rod to reciprocate linearly to drive the clutch actuator to move, and the testing system is used to collect various data of the clutch actuator; The frame includes a base plate, a pair of side plates and a crossbeam. The clutch actuator and the cylinder are respectively mounted on one of the side plates. The base plate is connected to the bottom of the pair of side plates, and the crossbeam is connected to the top of the pair of side plates. The side plate is provided with a set of positioning holes for installing a clutch actuator or cylinder; The crossbeam and each of the side plates are fixedly connected by screws.

2. The clutch actuator testing fixture according to claim 1, characterized in that, The end of the piston rod away from the cylinder is connected to the clutch actuator via a bolt assembly, which includes a bolt, a nut, and a lock washer.

3. The clutch actuator testing fixture according to claim 2, characterized in that, The bolt assembly has a coaxial positioning countersunk hole at the connection end between the bolt and the piston rod.

4. The clutch actuator testing fixture according to claim 1, characterized in that, The cylinder is a pneumatic cylinder.

5. The clutch actuator testing fixture according to claim 1, characterized in that, The cylinder is connected to a pressure regulating valve, which is used to adjust the output driving force of the piston rod.

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