Transmission separation mechanism verification device and method

Abstract

The invention provides a transmission separation mechanism verification device and method. The verification device comprises a rotation source, a first flange seat, a flywheel, a universal joint, a load disc, a rotation source support, a main support, a load support, a clutch assembly, a second flange seat and a separation execution mechanism. According to the transmission separation mechanism verification device, the rotation source drives the power transmission chain of the flywheel, the clutch assembly, the transmission assembly, the universal joint and the load disc, key working conditions such as engine output, clutch connection / separation, transmission input / output and load reverse dragging in actual operation of a vehicle are completely reproduced, a whole vehicle road test certificate can be replaced, and the verification efficiency is improved. And the design risk, verification period and cost of the transmission separation mechanism are reduced.

Description

Technical Field

[0001] This invention relates to the field of transmission testing technology, and in particular to a transmission separation mechanism verification device and method. Background Technology

[0002] As a key component of the vehicle's powertrain control system, the transmission release mechanism directly affects the smoothness of gear shifts, handling responsiveness, and driving comfort. In mechanical transmission systems, the release mechanism plays a crucial role in disconnecting or engaging the power transmission between the engine and the transmission; its structural design and dynamic response characteristics are vital for the coordinated control of the entire vehicle's powertrain.

[0003] In existing technologies, the performance of the separation mechanism is generally evaluated by conducting actual road tests after the vehicle assembly is completed. This method has obvious drawbacks: First, the verification cycle is lengthy, requiring the completion of vehicle manufacturing, assembly, and debugging before testing can begin; second, road testing is costly, involving not only a large investment of manpower and resources but also considerable test mileage and time; third, since different specifications and structural forms of the separation mechanism have a significant impact on the overall vehicle layout, control system matching, and powertrain integration, multiple dedicated test vehicles are often required to fully verify various design schemes, or the same test vehicle needs to be frequently and complexly modified, further exacerbating development costs and time pressures. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide a transmission separation mechanism verification device and method to achieve efficient, low-cost, and modular verification of the performance of the transmission separation mechanism.

[0006] To achieve the above objectives, the first aspect of the present invention provides a transmission separation mechanism verification device, comprising a rotating source, a first flange seat, a flywheel, a universal joint, a load plate, a rotating source bracket, a main bracket, a load bracket, a clutch assembly, a second flange seat, and a separation actuator. The rotation source is mounted on the rotation source bracket, and the output shaft of the rotation source is connected to the front end of the first flange seat; The rear end of the first flange seat is connected to the flywheel, the clutch assembly is connected to the rear end of the flywheel, and the main bracket is sleeved on the periphery of the clutch assembly and connected to the front housing of the clutch assembly. The clutch assembly is used to engage the input end of the transmission assembly; The front end of the universal joint is used to connect to the output end of the transmission assembly, and the rear end of the universal joint is connected to the front end of the second flange seat. The rear end of the second flange seat is connected to the load plate, and the second flange seat is rotatably supported on the load bracket; The separation actuator is configured to be mounted on the transmission assembly for driving the clutch assembly to engage or disengage power transmission.

[0007] According to one embodiment of the present invention, the separation actuator includes a power booster pump bracket mounted on the transmission assembly and a clutch booster sub-pump mounted on the power booster pump bracket, the clutch booster sub-pump being used to drive the clutch assembly to achieve power separation.

[0008] According to one embodiment of the present invention, the separation actuator includes a cylinder bracket mounted on the transmission assembly and a cylinder mounted on the cylinder bracket, the cylinder being used to drive the clutch assembly to achieve power separation.

[0009] According to one embodiment of the present invention, a transition ring is further included, the front end of which is connected to the rear end of the main bracket, and the rear end of the transition ring is provided with an annular protrusion, which engages with a stop on the front housing of the transmission assembly.

[0010] According to one embodiment of the present invention, the bearing is further comprising an inner ring connected to the second flange seat and an outer ring connected to the load support.

[0011] According to one embodiment of the present invention, the device further includes a motor controller, wherein the rotation source is a motor, and the motor controller is connected to the control terminal of the motor for controlling the rotational speed of the motor.

[0012] A second aspect of the present invention provides a method for verifying a transmission separation mechanism, implemented based on the transmission separation mechanism verification device described in the first aspect, the method comprising: Determine the front housing stop specifications of the transmission assembly according to the experimental requirements, fix the corresponding transition ring to the main bracket with bolts, and then fix the transmission assembly to the transition ring with bolts. The clutch assembly is bolted to the flywheel, the first flange seat is bolted to the flywheel, and the rotary source is bolted to the rotary source bracket. The output shaft of the rotary source is splined to the first flange seat. After adjusting the position of the output shaft of the rotary source, the rotary source bracket is fixed. The universal joint and the second flange seat are mounted on the load bracket via bearings. After adjusting and fixing the axial position of the load bracket, the output end of the transmission assembly is connected to the universal joint via bolts, and the load plate is connected to the second flange seat via bolts. The power steering pump bracket is fixed to the side mounting boss of the transmission assembly with bolts. The clutch power steering sub-pump is installed on the power steering pump bracket with bolts. The push rod of the clutch power steering sub-pump is connected to the release fork connection hole of the transmission assembly with bolts or pins. Start the rotary source and adjust its speed to the required speed for the experiment. Control the clutch booster pump to perform the separation action and complete at least 100 cycles. Each cycle includes: the push rod of the clutch booster pump drives the release rocker arm of the transmission assembly to rotate from the initial position to the maximum stroke position of the release bearing, and then returns to the initial position.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The transmission separation mechanism verification device according to the present invention fully reproduces the key operating conditions such as engine output, clutch engagement / disengagement, transmission input / output and load reverse drag during actual vehicle operation by driving the power transmission chain of flywheel, clutch assembly, transmission assembly, universal joint and load plate through a rotating source. It can replace the whole vehicle road test verification and reduce the design risk, verification cycle and cost of the transmission separation mechanism.

[0014] 2. The transmission separation mechanism verification method of the present invention can realize standardized and repeatable testing, is compatible with a variety of transmission models, has strong versatility, and improves testing safety and ease of operation.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein: Figure 1 This is a schematic diagram of a transmission separation mechanism verification device with a transmission assembly installed in one embodiment of the present invention.

[0017] Figure 2 This is an assembly diagram of the main bracket, transition ring, and gearbox assembly in one embodiment of the present invention.

[0018] Figure 3 This is an assembly diagram of the rotating source, the first flange seat, the flywheel, and the clutch assembly in one embodiment of the present invention.

[0019] Figure 4 This is an assembly diagram of the universal joint, second flange seat, main bracket, bearing and load plate in one embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1-Rotating source, 2-First flange seat, 3-Flywheel, 4-Universal joint, 5-Load plate, 6-Rotating source bracket, 7-Main bracket, 8-Transmission assembly, 9-Power steering pump bracket, 10-Clutch power steering pump, 11-Load bracket, 12-Clutch assembly, 13-Second flange seat, 14-Bearing, 15-Transition ring. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0022] The following is for reference. Figures 1 to 4 This describes a transmission separation mechanism verification device according to an embodiment of the present invention.

[0023] Combination Figures 1 to 4 As shown, Figure 1 The left side is defined as the front of the verification device. According to an embodiment of the present invention, the transmission separation mechanism verification device includes a rotation source 1, a first flange seat 2, a flywheel 3, a universal joint 4, a load plate 5, a rotation source bracket 6, a main bracket 7, a load bracket 11, a clutch assembly 12, a second flange seat 13, and a separation actuator.

[0024] The rotating source 1 is mounted on the rotating source bracket 6, and the output shaft of the rotating source 1 is connected to the front end of the first flange seat 2. The rotating source 1 can be a motor-type rotating source, such as an AC motor or a DC motor, or it can be an internal combustion engine-type rotating source.

[0025] The rear end of the first flange seat 2 is connected to the flywheel 3, and the clutch assembly 12 is connected to the rear end of the flywheel 3. The main bracket 7 is fitted around the clutch assembly 12 and connected to the front housing of the clutch assembly 12. The clutch assembly 12 is used to dock with the input end of the transmission assembly 8, and the clutch assembly 12 has friction plates. The flywheel 3 is generally disc-shaped. The rear end face of the flywheel 3 is used to contact the friction plates.

[0026] The front end of the universal joint 4 is used to connect to the output end of the transmission assembly 8, and the rear end of the universal joint 4 is connected to the front end of the second flange seat 13. The rear end of the second flange seat 13 is connected to the load plate 5, and the second flange seat 13 is rotatably supported on the load bracket 11. The universal joint 4 transmits the output torque of the transmission assembly 8 to the load plate 5 on the one hand, and can adapt to dynamic displacement on the other hand, ensuring the continuity of transmission and the stability of testing. The shape and weight of the load plate 5 are set according to actual needs and are not limited thereto. The load plate 5 adopts a serialized design, providing a variety of rotational inertia as loads to meet the performance verification of various vehicle models and various load conditions. The dimensions of the first flange seat 2 and the second flange seat 13 are set according to actual needs and are not limited thereto.

[0027] The release actuator is configured to be mounted on the transmission assembly 8 and is used to drive the clutch assembly 12 to engage or disengage power transmission. The first flange seat 2 and the second flange seat 13 adopt a serialized design. The release actuator can be the release actuator integrated into the transmission assembly 8 or a cylinder. The release actuator can meet the verification requirements of various release mechanisms such as side-push, bottom-push, top-pull, and bottom-pull.

[0028] The transmission disconnect mechanism verification device according to an embodiment of the present invention fully replicates the key operating conditions such as engine output, clutch engagement / disengagement, transmission input / output, and load reverse drag during actual vehicle operation by driving the power transmission chain of the flywheel, clutch assembly, transmission assembly, universal joint, and load plate through a rotating source. It can replace the whole vehicle road test verification, reducing the design risk, verification cycle, and cost of the transmission disconnect mechanism.

[0029] In some embodiments, such as Figure 1 As shown, the separation actuator includes a power booster pump bracket 9 mounted on the transmission assembly 8 and a clutch booster sub-pump 10 mounted on the power booster pump bracket 9. The clutch booster sub-pump 10 is used to drive the clutch assembly 12 to achieve power separation. The power booster pump bracket 9 and the clutch booster sub-pump 10 are bolted to the transmission assembly 8 without changing the structure of the transmission assembly 8 itself, which improves the versatility and scalability of the transmission separation mechanism verification device.

[0030] In other embodiments, the separation actuator includes a cylinder bracket mounted on the transmission assembly 8 and a cylinder mounted on the cylinder bracket, the cylinder being used to drive the clutch assembly 12 to achieve power separation. Using a cylinder as the driving element has the advantages of simple structure, sensitive operation, and low maintenance cost.

[0031] like Figure 2As shown, in some embodiments, the transmission separation mechanism verification device further includes a transition ring 15. The front end of the transition ring 15 is connected to the rear end of the main support 7, and the rear end of the transition ring 15 has an annular protrusion that mates with a stop on the front housing of the transmission assembly 8. The outer diameter of the annular protrusion within the transition ring 15 is set according to actual needs to accommodate various specifications of clutch front housing stops, improving the versatility of the verification device. For example, the outer diameter of the annular protrusion can be designed to be various sizes such as 511.175mm, 447.68mm, and 409.58mm.

[0032] like Figure 4 As shown, the transmission separation mechanism verification device also includes a bearing 14. The inner ring of the bearing 14 is connected to the second flange seat 13, and the outer ring of the bearing 14 is connected to the load support 11. The bearing 14 supports the second flange seat 13 on the fixed load support 11 in a low-friction, high-coaxial manner, and can withstand high radial and axial loads and speeds.

[0033] The transmission release mechanism verification device also includes a motor controller. The rotation source 1 is a motor, and the motor controller is connected to the control terminal of the motor to control the motor speed. This allows for the simulation of the rotational motion of the clutch assembly 12 at various speeds under actual vehicle operating conditions, enabling performance verification of the transmission release mechanism under dynamic environments.

[0034] This invention also proposes a method for verifying a transmission separation mechanism, implemented based on the transmission separation mechanism verification device described in the above embodiments. The implementation process of this method is as follows: Step S102: Determine the front housing stop specification of the transmission assembly 8 according to the experimental requirements, fix the corresponding transition ring 15 to the main bracket 7 with bolts, and then fix the transmission assembly 8 to the transition ring 15 with bolts.

[0035] In step S104, the clutch assembly 12 is bolted to the flywheel 3, the first flange seat 2 is bolted to the flywheel 3, and the rotating source 1 is bolted to the rotating source bracket 6. The output shaft of the rotating source 1 is connected to the first flange seat 2 via a spline. After adjusting the position of the output shaft of the rotating source 1, the rotating source bracket 6 is fixed.

[0036] It should be noted that the pressure plate of the clutch assembly 12 is fixed to the flywheel 3 with bolts, and the friction plate of the clutch assembly 12 is clamped between the flywheel 3 and the pressure plate. The axial position adjustment requirement for the rotating source bracket 6 is: the clutch disengagement finger is fixed after contacting the transmission release bearing.

[0037] In step S106, the universal joint 4 and the second flange seat 13 are installed on the load bracket 11 through the bearing 14. After adjusting and fixing the axial position of the load bracket 11, the output end of the transmission assembly 8 is connected to the universal joint 4 by bolts, and the load plate 5 is connected to the second flange seat 13 by bolts.

[0038] In step S108, the power assist pump bracket 9 is fixed to the side mounting boss of the transmission assembly 8 with bolts, the clutch power assist sub-pump 10 is installed on the power assist pump bracket 9 with bolts, and the push rod of the clutch power assist sub-pump 10 is connected to the release fork connection hole of the transmission assembly 8 with bolts or pins.

[0039] The installation of the transmission separation mechanism verification device is completed through steps S102 to S108.

[0040] Step S110: Start the rotation source 1, adjust its speed to the speed required for the experiment, control the clutch booster pump 10 to perform the separation action, and complete at least 100 cycles, wherein each cycle includes: the push rod of the clutch booster pump 10 drives the separation rocker arm of the transmission assembly 8 to rotate from the initial position to the maximum stroke position of the release bearing, and then return to the initial position.

[0041] In this embodiment, the break-in process refers to driving the separation mechanism through a clutch booster pump to complete no less than 100 cycles at a set speed to eliminate assembly stress and surface micro-irregularities of the components, so that the moving parts reach a stable fit. The standard for successful break-in is: the separation action is smooth and without jamming throughout, and there is no abnormal wear on the relatively moving parts.

[0042] In some embodiments, step S108 further includes: Step S1082: The stroke of the clutch booster pump 10 is precisely adjusted to ensure that its push rod action matches the motion characteristics of the transmission disengagement mechanism.

[0043] Specifically, the initial position of the push rod of the clutch booster pump 10 is when the release bearing and clutch disengagement finger just make contact after the push rod and release rocker arm are installed. The working position of the push rod is the position after the release rocker arm has rotated counterclockwise by a corresponding angle when the maximum disengagement stroke of the release bearing (generally 9mm-12mm) is required in the experiment. The formula for calculating the rotation angle of the release rocker arm is: rotation angle α=arctan(L / i), where L is the maximum disengagement stroke of the release bearing, and i is the transmission disengagement lever ratio, that is, the ratio of the vertical distance from the center of rotation of the release rocker arm to the center line of the input shaft of the transmission assembly to the distance from the center of the connection hole between the release rocker arm and the booster pump push rod to the center of rotation of the release rocker arm. This improves the adaptability of the verification device to different transmission models and the accuracy of the test.

[0044] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this invention, the terms "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A verification device for a transmission separation mechanism, characterized in that, It includes a rotary source (1), a first flange seat (2), a flywheel (3), a universal joint (4), a load plate (5), a rotary source bracket (6), a main bracket (7), a load bracket (11), a clutch assembly (12), a second flange seat (13), and a separation actuator; The rotating source (1) is mounted on the rotating source bracket (6), and the output shaft of the rotating source (1) is connected to the front end of the first flange seat (2); The rear end of the first flange seat (2) is connected to the flywheel (3), the clutch assembly (12) is connected to the rear end of the flywheel (3), the main bracket (7) is sleeved on the periphery of the clutch assembly (12) and connected to the front shell of the clutch assembly (12); The clutch assembly (12) is used to dock with the input end of the transmission assembly (8); The front end of the universal joint (4) is used to connect to the output end of the transmission assembly (8), and the rear end of the universal joint (4) is connected to the front end of the second flange seat (13). The rear end of the second flange seat (13) is connected to the load plate (5), and the second flange seat (13) is rotatably supported on the load support (11); The separation actuator is configured to be mounted on the transmission assembly (8) for driving the clutch assembly (12) to engage or disengage power transmission.

2. The transmission separation mechanism verification device according to claim 1, characterized in that, The separation actuator includes a power booster pump bracket (9) mounted on the transmission assembly (8) and a clutch booster sub-pump (10) mounted on the power booster pump bracket (9). The clutch booster sub-pump (10) is used to drive the clutch assembly (12) to achieve power separation.

3. The transmission separation mechanism verification device according to claim 1, characterized in that, The separation actuator includes a cylinder bracket mounted on the transmission assembly (8) and a cylinder mounted on the cylinder bracket, the cylinder being used to drive the clutch assembly (12) to achieve power separation.

4. The transmission separation mechanism verification device according to claim 1, characterized in that, It also includes a transition ring (15), the front end of which is connected to the rear end of the main bracket (7), and the rear end of the transition ring (15) is provided with an annular protrusion, which engages with a stop on the front housing of the transmission assembly (8).

5. The transmission separation mechanism verification device according to claim 1, characterized in that, It also includes a bearing (14), the inner ring of which is connected to the second flange seat (13), and the outer ring of which is connected to the load support (11).

6. The transmission separation mechanism verification device according to any one of claims 1 to 5, characterized in that, It also includes a motor controller, wherein the rotation source (1) is a motor, and the motor controller is connected to the control terminal of the motor to control the speed of the motor.

7. A method for verifying a transmission separation mechanism, characterized in that, Based on the transmission separation mechanism verification device according to any one of claims 1 to 6, the method includes: The front housing stop specification of the transmission assembly (8) is determined according to the experimental requirements. The corresponding transition ring (15) is fixed to the main bracket (7) with bolts, and the transmission assembly (8) is fixed to the transition ring (15) with bolts. The clutch assembly (12) is bolted to the flywheel (3), the first flange seat (2) is bolted to the flywheel (3), the rotating source (1) is bolted to the rotating source bracket (6), the output shaft of the rotating source (1) is connected to the first flange seat (2) by spline, the position of the output shaft of the rotating source (1) is adjusted, and then the rotating source bracket (6) is fixed. The universal joint (4) and the second flange seat (13) are installed on the load bracket (11) through the bearing (14). After adjusting and fixing the axial position of the load bracket (11), the output end of the transmission assembly (8) is connected to the universal joint (4) by bolts, and the load plate (5) is connected to the second flange seat (13) by bolts. The power booster pump bracket (9) is fixed to the side mounting boss of the transmission assembly (8) by bolts. The clutch booster sub-pump (10) is installed on the power booster pump bracket (9) by bolts. The push rod of the clutch booster sub-pump (10) is connected to the release fork connection hole of the transmission assembly (8) by bolts or pins. Start the rotating source (1), adjust its speed to the speed required for the experiment, control the clutch booster pump (10) to perform the separation action, and complete at least 100 cycles, wherein each cycle includes: the push rod of the clutch booster pump (10) drives the separation rocker arm of the transmission assembly (8) to rotate from the initial position to the maximum stroke position of the separation bearing, and then return to the initial position.

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