A testing device and method compatible with both AMT and MT transmissions

Abstract

The invention discloses a testing device and a testing method compatible with an AMT gearbox and an MT gearbox. The testing device comprises a frame, a movable input-end power device, a headrest device and an output-end power device are connected to the frame, a gear selection device is arranged above the frame, a lifting and positioning device is arranged inside the frame, and a conveying roller is arranged on one side of the lifting and positioning device; the headrest device is used to fix the gearbox, the input-end power device passes through the headrest device and is connected to the input end of the gearbox, and the output-end power device is connected to the output end of the gearbox; the gearbox is transported to the top of the lifting and positioning device through the conveying roller, the lifting and positioning device lifts and positions the gearbox upward, the headrest device is moved to fix the gearbox, and the input-end power device and the output-end power device are moved to be connected to the gearbox respectively. The testing device can integrate the MT gearbox and the AMT gearbox on one platform, and has broad application prospects and market prospects.

Description

Technical Field

[0001] The invention relates to a testing device and a testing method for an AMT gearbox and a MT gearbox, belonging to the technical field of gearbox testing. Background Art

[0002] With the improvement of environmental awareness and the continuous development of new energy technologies, the truck industry is gradually implementing the new National VI standard. At the same time, the intelligence and automation of trucks have also become a new trend in the development of the industry. In this context, automatic mechanical transmission (AMT) has become an important development direction for the truck industry. At present, the AMT gearbox on the market has developed to the second generation, and its performance and stability have been significantly improved.

[0003] However, for some specific application scenarios and specific user needs, a manual transmission (MT) is still needed. However, existing gearbox test equipment can only test AMT gearboxes, or can only test MT gearboxes, and cannot be compatible with the testing of both AMT gearboxes.

[0004] Therefore, there is an urgent need for a test device that integrates the MT gearbox and the AMT gearbox on one platform to meet the market's testing needs for the MT gearbox and the AMT gearbox. Summary of the invention

[0005] To solve the above problems, the present invention provides a testing device and a testing method that are compatible with AMT gearboxes and MT gearboxes. The testing device can integrate the MT gearbox and the AMT gearbox on one platform and has broad application prospects and market prospects.

[0006] Specifically, the technical solution of the present invention is as follows:

[0007] On the one hand, the present invention provides a testing device that is compatible with AMT gearboxes and MT gearboxes, including a frame, to which a movable input-end power device, a head seat device and an output-end power device are connected, a gear selection and shifting device is arranged above the frame, a lifting and positioning device is arranged in the frame, and a conveying roller is arranged on one side of the lifting and positioning device; the head seat device is used to fix the gearbox, the input-end power device passes through the head seat device and is connected to the input end of the gearbox, and the output-end power device is connected to the output end of the gearbox; the gearbox is transported to the top of the lifting and positioning device through the conveying roller, the lifting and positioning device lifts and positions the gearbox upward, the head seat device is moved to fix the gearbox, and the input-end power device and the output-end power device are moved respectively to connect with the gearbox.

[0008] In one embodiment of the present invention, the conveyor roller includes a loading and unloading station, a cache station and a test docking station, the cache station is located on one side of the loading and unloading station, the test docking station is arranged at the end of the loading and unloading station and is located on the frame, and the jacking and positioning device is arranged in the test docking station.

[0009] In one embodiment of the present invention, the input end power device includes a first driving mechanism, the output end of the first driving mechanism is connected to a first clutch via a first torque limiter, and the end of the first clutch away from the first driving mechanism is connected to a second clutch.

[0010] In one embodiment of the present invention, the jacking and positioning device includes a pre-positioning mechanism and a jacking and positioning mechanism, the pre-positioning mechanism is arranged on both sides of the jacking and positioning mechanism, the pre-positioning mechanism includes a jacking cylinder, the jacking and positioning mechanism includes a lifting module, and one side of the jacking and positioning mechanism is also provided with a gas-electric automatic docking structure that docks with the gearbox.

[0011] In one embodiment of the present invention, the head seat device includes a head seat, a moving mechanism is connected to the bottom of the head seat, the moving mechanism is used to drive the head seat to move, a flange adapter ring is fixedly connected to the side of the head seat away from the input end power device, the inner periphery of the flange adapter ring is provided with a through hole connected to the head seat, the input end power device is connected to the gearbox through the through hole; a plurality of clamping tools arranged in a circumference are provided on the outer periphery of the flange adapter ring, the clamping tool includes a tool shell and a clamping head slidably connected to the tool shell; a plurality of mounting holes are provided around the gearbox shell, the flange adapter ring is provided with a plurality of positioning pins matching the mounting holes, and the clamping head is used to press the gearbox shell onto the flange adapter ring.

[0012] In one embodiment of the present invention, the output end power device includes a second drive mechanism, the output end of the second drive mechanism is connected to a second torque limiter, the second torque limiter is connected to a gearbox spline adapter, and the gearbox spline adapter is connected to the gearbox.

[0013] In one embodiment of the present invention, the shifting device comprises a support frame, the support frame is provided with a shifting actuator and a shifting conveying mechanism, the shifting conveying mechanism is connected with a shifting docking mechanism, the shifting conveying mechanism is used to drive the shifting docking mechanism to move, the shifting docking mechanism comprises a base plate, a first bearing seat and a second bearing seat are arranged on the base plate, a shifting flexible shaft is passed through the first bearing seat, and a shifting flexible shaft is passed through the second bearing seat; the shifting actuator comprises a third driving mechanism and a fourth driving mechanism mounted on the support frame, the output end of the third driving mechanism is connected to the shifting flexible shaft through a displacement sensor and a force sensor, and the other end of the shifting flexible shaft is connected to a first docking claw; the output end of the fourth driving mechanism is connected to the shifting flexible shaft through a displacement sensor and a force sensor, and the other end of the shifting flexible shaft is connected to a second docking claw; the shifting actuator also comprises a flexible shaft fixing seat mounted on the support frame, the shifting flexible shaft and the shifting flexible shaft are passed through the flexible shaft fixing seat; the first docking claw is docked with the shift lever of the gearbox, and the second docking claw is docked with the shift lever of the gearbox.

[0014] In one embodiment of the present invention, the support frame is also equipped with a first NVH conveying assembly, a second NVH conveying assembly and a third NVH conveying assembly, the first NVH conveying assembly and the second NVH conveying assembly are located on both sides of the support frame, and the third NVH conveying assembly is located at the rear end of the support frame; the first NVH conveying assembly is connected to a first NVH test unit, and the first NVH conveying assembly is used to drive the first NVH test unit to move to test the gearbox; the second NVH conveying assembly is connected to a second NVH test unit, and the second NVH conveying assembly is used to drive the second NVH test unit to move to test the gearbox; the third NVH conveying assembly is connected to a third NVH test unit, and the third NVH conveying assembly is used to drive the third NVH test unit to move to test the gearbox.

[0015] In one embodiment of the present invention, the first NVH test unit, the second NVH test unit and the third NVH test unit all include NVH vibration sensors.

[0016] On the other hand, the present invention provides a testing method, using the testing device compatible with the AMT gearbox and the MT gearbox, the testing method comprising the following steps:

[0017] Step 1: The operator lifts the gearbox to be tested at the loading and unloading station and places it on the conveyor roller, connects the communication cable, air pipe and oil pipe of the test equipment to the gearbox, and presses the release button when ready; at this time, if the test equipment is in an idle state, the conveyor roller will automatically send the gearbox to the test docking station; if there is a gearbox in the test docking station, the conveyor roller will automatically send the gearbox to the cache station;

[0018] Step 2: When the gearbox arrives at the test docking station, the pre-positioning mechanism lifts up the gearbox to help it align, and then the lifting and positioning mechanism lifts and positions the gearbox;

[0019] Step 3: The headstock device moves to the specified position through the moving mechanism. At this time, the flange adapter ring is docked with the gearbox housing. After receiving the signal, the clamping work clamps the gearbox stably to the headstock device through the clamping head. In this process, the gas-electric automatic docking structure will rise and automatically connect with the corresponding structure on the gearbox. At this time, the gas circuit, communication cable, etc. in the test equipment will form a loop with the gearbox TCU to establish communication;

[0020] Step 4: The headstock device and the gearbox move to the working position through the moving mechanism. During this process, the shaft spline of the gearbox and the second clutch are automatically connected;

[0021] Step 5: If the gearbox is an AMT gearbox, the first NVH test unit, the second NVH test unit, and the third NVH test unit in the gear selection device are transported to the working position through the first NVH conveying assembly, the second NVH conveying assembly, and the third NVH conveying assembly, respectively, and then the NVH vibration sensor in each NVH test unit contacts a specific position of the gearbox;

[0022] Step 6: If the gearbox is an MT gearbox, in addition to completing the above step 5 process, the gear selection and shifting conveying mechanism transports the gear selection and shifting docking mechanism to the working position, the first docking claw in the gear selection and shifting docking mechanism docks with the gear shift lever of the gearbox, and the second docking claw docks with the gear selection lever of the gearbox;

[0023] Step 7: When the above steps 5 and 6 are in action, the output end power device automatically moves forward to complete automatic docking with the output end of the gearbox;

[0024] Step 8. After all automatic docking is completed, the test equipment starts to perform road load simulation for the gearbox according to the established procedures, including gear parameter detection, automatic gear shifting through communication with TCU, gear selection and shifting evaluation of MT gearbox, gearbox oil pressure and oil temperature detection, NVH and other related test requirements; among them, if the gearbox under test is an AMT gearbox with its own clutch actuator, the clutch separation action during the gear shifting process is completed by the second clutch; if the gearbox under test is an MT gearbox or does not have a clutch actuator, the clutch separation action is completed by the first clutch.

[0025] Beneficial Effects

[0026] The test equipment provided by the present invention can realize automatic loading and unloading. The operator only needs to place the gearbox to be tested on the loading and unloading station, and prepare the wiring harness, air pipe and oil pipe joint of the test equipment to connect with the gearbox. The test equipment will automatically transport the gearbox to the test station. After the gearbox completes a series of project tests, it will automatically transport the gearbox to the unloading station. The test equipment provides a power source for testing the gearbox, a stable clamping work and an automatic docking structure, and reliable speed and torque sensors, NVH vibration sensors, oil pressure and oil temperature sensors to ensure the accuracy of test parameters. A simple and effective circulating roller conveying and positioning system ensures that the utilization rate of the equipment is maximized. For the MT gearbox, it also has a unique automatic docking gear selection and shifting docking mechanism and a fully automatic gear selection and shifting actuator that automatically executes the gear selection and shifting action. The test equipment can simulate the working state of the gearbox on the whole vehicle, realize road load simulation, gear parameter detection, automatic shifting with TCU communication, MT gearbox gear selection and shifting evaluation, gearbox oil pressure and oil temperature detection and NVH and other related test requirements. In addition, the test equipment can also be customized according to different test requirements to meet the needs of different users. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A stereogram of a test device provided by an embodiment of the present invention from a first viewing angle;

[0028] Figure 2 A stereogram of a second viewing angle of a test device provided by an embodiment of the present invention;

[0029] Figure 3 A three-dimensional diagram of the test device provided by the embodiment of the present invention from a third viewing angle;

[0030] Figure 4 A stereogram of a test device provided by an embodiment of the present invention from a fourth viewing angle;

[0031] Figure 5 A three-dimensional diagram of a conveyor roller provided in an embodiment of the present invention;

[0032] Figure 6 A three-dimensional diagram of an input end power device provided by an embodiment of the present invention;

[0033] Figure 7 A three-dimensional diagram of a lifting and positioning device provided in an embodiment of the present invention;

[0034] Figure 8 A three-dimensional diagram of a headstock device provided by an embodiment of the present invention;

[0035] Fig. 9 A three-dimensional diagram of an output end power device provided by an embodiment of the present invention;

[0036] Fig.10A three-dimensional diagram of a gear selection and shifting device provided by an embodiment of the present invention from one viewing angle;

[0037] Fig.11 A three-dimensional diagram of a gear selection and shifting device provided by an embodiment of the present invention from another perspective;

[0038] Fig.12 A three-dimensional diagram of a gear selection and shifting docking mechanism provided by an embodiment of the present invention from one viewing angle;

[0039] Fig.13 A three-dimensional diagram of the gear selection and shifting docking mechanism provided by an embodiment of the present invention from another perspective;

[0040] Fig.14 A three-dimensional diagram of a gear selection and shifting actuator is provided for an embodiment of the present invention;

[0041] Fig.15 A partial schematic diagram of the gearbox.

[0042] In the figure: In the figure: 1. conveyor roller; 11. loading and unloading station; 12. buffer station; 13. test docking station; 2. input end power device; 21. first drive mechanism; 22. first torque limiter; 23. first clutch; 24. second clutch; 3. jacking and positioning device; 31. pre-positioning mechanism; 32. jacking and positioning mechanism; 33. jacking cylinder; 34. lifting module; 35. gas-electric automatic docking structure; 4. head seat device; 41. head seat; 42. flange adapter ring; 43. clamping tool; 431. tool housing; 432. clamping head; 44. moving mechanism; 45. through hole; 5. output end power device; 51. second drive mechanism; 52. second torque limiter; 53. gearbox spline adapter; 6. gear selection device; 60 , support frame; 61, gear selection and shift docking mechanism; 611, base plate; 612, first docking claw; 613, second docking claw; 614, first bearing seat; 615, second bearing seat; 616, gear shift flexible shaft; 617, gear selection flexible shaft; 62, gear selection and shift actuator; 621, third drive mechanism; 622, fourth drive mechanism; 623, flexible shaft fixing seat; 624, force sensor; 625, displacement sensor; 63, gear selection and shift conveying mechanism; 64, first NVH test unit; 65, first NVH conveying assembly; 66, second NVH test unit; 67, second NVH conveying assembly; 68, third NVH test unit; 69, third NVH conveying assembly; 7, frame; 8, gearbox; 81, gear selection lever; 82, gear shift lever. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] like Figure 1-4 As shown, the present invention provides a testing device compatible with AMT gearbox and MT gearbox, including a frame 7, to which a movable input-end power device 2, a head seat device 4 and an output-end power device 5 are connected, a gear selection device 6 is arranged above the frame 7, a lifting and positioning device 3 is arranged in the frame 7, and a conveying roller 1 is arranged on one side of the lifting and positioning device 3; the head seat device 4 is used to fix the gearbox, the input-end power device 2 passes through the head seat device 4 and is connected to the input end of the gearbox, and the output-end power device 5 is connected to the output end of the gearbox; the gearbox is transported to the top of the lifting and positioning device 3 through the conveying roller 1, the lifting and positioning device 3 lifts and positions the gearbox upward, the head seat device 4 is moved to fix the gearbox, and the input-end power device 2 and the output-end power device 5 are moved respectively to connect with the gearbox.

[0047] like Figure 5As shown, in some embodiments, the conveyor roller 1 includes a loading and unloading station 11, a cache station 12 and a test docking station 13, the cache station 12 is located on one side of the loading and unloading station 11, the test docking station 13 is arranged at the end of the loading and unloading station 11 and is located on the frame 7, and the jacking and positioning device 3 is arranged in the test docking station 13.

[0048] In this embodiment, the gearbox is loaded and unloaded through the loading and unloading station 11, and the gearbox can be cached through the buffer station 12. The end of the loading and unloading station 11 is provided with a notch, and the notch forms the test docking station 13. The operator lifts the gearbox to be tested at the loading and unloading station 11 and puts it into the conveyor roller 1. At this time, if the test equipment is in an idle state, the conveyor roller 1 will automatically send the gearbox to the test docking station 13; if there is a gearbox in the test docking station 13, the conveyor roller 1 will automatically send the gearbox to the buffer station 12.

[0049] like Figure 6 As shown, in some embodiments, the input end power device 2 includes a first driving mechanism 21, the output end of the first driving mechanism 21 is connected to a first clutch 23 through a first torque limiter 22, and the end of the first clutch 23 away from the first driving mechanism 21 is connected to a second clutch 24.

[0050] like Figure 7 As shown, in some embodiments, the lifting and positioning device 3 includes a pre-positioning mechanism 31 and a lifting and positioning mechanism 32, the pre-positioning mechanism 31 is arranged on both sides of the lifting and positioning mechanism 32, the pre-positioning mechanism 31 includes a lifting cylinder 33, the lifting and positioning mechanism 32 includes a lifting module 34, and one side of the lifting and positioning mechanism 32 is also provided with a gas-electric automatic docking structure 35 docked with the gearbox. When in use, the pre-positioning mechanism 31 pre-positions the gearbox through the lifting cylinder 33, and the lifting and positioning mechanism 32 lifts and positions the gearbox after pre-positioning through the lifting module 34. Among them, the gas-electric automatic docking structure 35 docks with the gearbox, and the gas circuit and circuit in the test equipment will form a loop with the gearbox TCU (automatic gearbox control unit) to establish communication to test it.

[0051] like Figure 8As shown, in some embodiments, the head seat device 4 includes a head seat 41, and a moving mechanism 44 is connected to the bottom of the head seat 41, and the moving mechanism 44 is used to drive the head seat 41 to move, and a flange adapter ring 42 is fixedly connected to the side of the head seat 41 away from the input end power device 2, and the inner periphery of the flange adapter ring 42 is provided with a through hole 45 connected to the head seat 41, and the input end power device 2 is connected to the gearbox through the through hole 45; the outer periphery of the flange adapter ring 42 is provided with a plurality of clamping tools 43 arranged in a circle, and the clamping tool 43 includes a tool shell 431 and a clamping head 432 slidably connected to the tool shell 431; a gearbox housing has a plurality of mounting holes around it, and the flange adapter ring 42 is provided with a plurality of positioning pins matching the mounting holes, and the clamping head 432 is used to press the gearbox housing onto the flange adapter ring 42.

[0052] In this embodiment, the flange adapter ring 42 is inserted into the mounting hole of the gearbox housing through a positioning pin to prevent the gearbox from rotating after being fixed. A plurality of clamping heads 432 are pressed against the outer periphery of the gearbox housing to tightly press the gearbox housing onto the flange adapter ring 42, thereby fastening the gearbox to the head seat device 4.

[0053] Optionally, the moving mechanism 44 is a linear screw module.

[0054] Since the existing method of fixing the gearbox on the headstock device 4 is to fix it by using a rotating clamping oil cylinder. However, when testing gearboxes of different diameters, this fixing method requires manual replacement or adjustment of the clamping point each time, which is time-consuming and labor-intensive, and inefficient. In addition, the clamping jaws of the rotating clamping oil cylinder may interfere with the reinforcing ribs on the surface of the gearbox housing during the rotating clamping process, so several of the clamping jaws have to be removed, which will cause the gearbox to be not firmly fixed, and there are certain safety hazards. Therefore, in this embodiment, by arranging a plurality of clamping fixtures 43 arranged in a circumference on the outer periphery of the flange adapter ring 42, the gearbox housings of different diameters can be adapted by replacing the flange adapter ring 42, and the clamping head 432 moves to different positions in the fixture housing 431 according to the size of the gearbox housing, thereby achieving the clamping of gearbox housings of different diameters onto the corresponding flange adapter ring 42, thereby fastening the gearbox to the test bench, and avoiding the interference of the clamping fixture 42 with the reinforcing ribs on the gearbox housing. Among them, the clamping head 432 is slidably connected to the tooling shell 431. Not only does the clamping claw not need to be replaced, and the clamping point does not need to be adjusted, but the clamping head 432 only needs to be moved to the corresponding position in a predetermined direction to adapt to the clamping of gearboxes of different diameters, which saves time and effort, has high testing efficiency, and avoids damage to the gearbox surface caused by manual adjustment; moreover, the clamping tool 43 has no rotational movement during the clamping process, and only the clamping head 432 needs to move in a straight line. Even if there are reinforcing ribs around the mounting holes of the gearbox housing, there will be no interference therewith, and the gearbox can be tightly fixed on the headstock device 4, firmly fixed, safely and reliably.

[0055] like Fig. 9 As shown, in some embodiments, the output end power device 5 includes a second drive mechanism 51, the output end of the second drive mechanism 51 is connected to a second torque limiter 52, the second torque limiter 52 is connected to a gearbox spline adapter 53, and the gearbox spline adapter 53 is connected to the gearbox.

[0056] like Figure 10-15As shown, in some embodiments, the gear selection and shifting device 6 includes a support frame 60, the support frame 60 is equipped with a gear selection and shifting actuator 62 and a gear selection and shifting conveying mechanism 63, the gear selection and shifting conveying mechanism 63 is connected to the gear selection and shifting docking mechanism 61, the gear selection and shifting conveying mechanism 63 is used to drive the gear selection and shifting docking mechanism 61 to move, the gear selection and shifting docking mechanism 61 includes a base plate 611, a first bearing seat 614 and a second bearing seat 615 are arranged on the base plate 611, a gear shifting soft shaft 616 is passed through the first bearing seat 614, and a gear selection soft shaft 617 is passed through the second bearing seat 615; the gear selection and shifting actuator 62 includes a third driving mechanism 621 and a fourth driving mechanism 622 installed on the support frame 60, the third driving mechanism 621 and the fourth driving mechanism 622 are installed on the support frame 60, The output end of the mechanism 621 is connected to the shift soft shaft 616 through a displacement sensor 625 and a force sensor 624, and the other end of the shift soft shaft 616 is connected to a first docking claw 612; the output end of the fourth drive mechanism 622 is connected to the gear selection soft shaft 617 through a displacement sensor 625 and a force sensor 624, and the other end of the gear selection soft shaft 617 is connected to a second docking claw 613; the gear selection and shifting actuator 62 also includes a soft shaft fixing seat 623 installed on the support frame 60, and the shift soft shaft 616 and the gear selection soft shaft 617 are inserted into the soft shaft fixing seat 623; the first docking claw 612 is docked with the shift lever 82 of the gearbox 8, and the second docking claw 613 is docked with the gear selection lever 81 of the gearbox 8.

[0057] In this embodiment, the gear selection and shifting transmission mechanism 63 pushes the first docking claw 612 on the base plate 611 to connect with the gear shift lever 82 of the gearbox 8, and pushes the second docking claw 613 on the base plate 611 to connect with the gear selection lever 81 of the gearbox 8; the gap between the docking claw and the soft shaft of the third driving mechanism 621 and the fourth driving mechanism 622 can make up for the spatial position error of the gear selection lever 81 and the gear shift lever 82, so as to realize automatic docking of gear selection and shifting; after successful docking, during the gearbox test process, according to the gear selection and shifting instruction, the third driving mechanism 621 pushes or pulls the gear shifting soft shaft 616 to drive the first docking claw 612 to realize automatic gear shifting; the fourth driving mechanism 622 pushes or pulls the gear selection soft shaft 617 to drive the second docking claw 613 to realize automatic gear selection; wherein, the feedback values ​​of the displacement sensor 625 and the force sensor 624 are used to automatically determine whether the gearbox 8 has reached the specified gear position.

[0058] The shifting device 6 provided in this embodiment connects the third driving mechanism to the first docking claw through the shifting flexible shaft, and connects the fourth driving mechanism to the second docking claw through the shifting flexible shaft. Both the shifting flexible shaft and the shifting flexible shaft are soft structures, which can enable the above-mentioned driving mechanism to drive the docking claw to move with a certain degree of freedom; the shifting device realizes the position error between the docking claw and the shifting flexible shaft and the shifting flexible shaft through the above-mentioned flexible shaft gap, which can compensate for the spatial deviation of the shifting rod. At the same time, the servo electric cylinder is used as the connecting flexible shaft of the third driving mechanism and the fourth driving mechanism, and no secondary docking is required. The shifting device automatically docks, and the shifting action is automatically executed without manual participation, so that the gearbox test work is efficient and the test is accurate.

[0059] Furthermore, the support frame 60 is also equipped with a first NVH conveying assembly 65, a second NVH conveying assembly 67 and a third NVH conveying assembly 69, wherein the first NVH conveying assembly 65 and the second NVH conveying assembly 67 are located on both sides of the support frame 60, and the third NVH conveying assembly 69 is located at the rear end of the support frame 60; the first NVH conveying assembly 65 is connected to a first NVH test unit 64, and the first NVH conveying assembly 65 is used to drive the first NVH test unit 64 to move to test the gearbox; the second NVH conveying assembly 67 is connected to a second NVH test unit 66, and the second NVH conveying assembly 67 is used to drive the second NVH test unit 66 to move to test the gearbox; the third NVH conveying assembly 69 is connected to a third NVH test unit 68, and the third NVH conveying assembly 69 is used to drive the third NVH test unit 68 to move to test the gearbox. Wherein, the above-mentioned NVH test units all include NVH vibration sensors, which contact specific positions of the gearbox through the NVH vibration sensors to test the gearbox.

[0060] The present invention also provides a testing method, which uses the testing device, and the testing method comprises the following steps:

[0061] Step 1: The operator lifts the gearbox to be tested at the loading and unloading station 11 and places it on the conveyor roller 1, connects the communication cable, air pipe and oil pipe of the test equipment to the gearbox, and presses the release button when ready; at this time, if the test equipment is in an idle state, the conveyor roller 1 will automatically send the gearbox to the test docking station 13; if there is a gearbox in the test docking station 13, the conveyor roller 1 will automatically send the gearbox to the cache station 12;

[0062] Step 2: When the gearbox 8 arrives at the test docking station 13, the pre-positioning mechanism 31 lifts up the gearbox 8 to help it align, and then the lifting and positioning mechanism 32 lifts and positions the gearbox 8;

[0063] Step 3: The headstock device 4 moves to the designated position through the moving mechanism 44, at which time the flange adapter ring 42 is docked with the gearbox housing. After receiving the signal, the clamping work 43 stably clamps the gearbox 8 to the headstock device 4 through the clamping head 432; during this process, the gas-electric automatic docking structure 35 will rise and automatically connect with the corresponding structure on the gearbox 8, and at this time, the gas circuit, communication cable, etc. in the test equipment will form a loop with the gearbox TCU to establish communication;

[0064] Step 4: The headstock device 4 and the gearbox 8 move to the working position through the moving mechanism 44. During this process, the shaft spline of the gearbox 8 will automatically dock with the second clutch 24;

[0065] Step 5: If the gearbox is an AMT gearbox, the first NVH test unit 64, the second NVH test unit 66, and the third NVH test unit 68 in the gear selection device 6 are transported to the working position through the first NVH conveying assembly 65, the second NVH conveying assembly 67, and the third NVH conveying assembly 69, respectively, and then the NVH vibration sensor in each NVH test unit contacts the specific position of the gearbox;

[0066] Step 6: If the gearbox is an MT gearbox, in addition to completing the above step 5 process, the gear selection and shifting conveying mechanism 63 transports the gear selection and shifting docking mechanism 61 to the working position, the first docking claw 612 in the gear selection and shifting docking mechanism 61 docks with the shift lever 82 of the gearbox 8, and the second docking claw 613 docks with the gear selection lever 81 of the gearbox 8. The above actions are all completed automatically.

[0067] Step 7: When the above steps 5 and 6 are in action, the output end power device 5 will also automatically move forward to complete the automatic docking with the output end of the gearbox;

[0068] Step 8. After all automatic docking is completed, the test equipment starts to perform road load simulation for the gearbox according to the established procedure, gear parameter detection, automatic gear shifting through communication with TCU, gear selection and shifting evaluation of MT gearbox, gearbox oil pressure and oil temperature detection, NVH and other related test requirements; among them, if the gearbox under test is an AMT gearbox with its own clutch actuator, the clutch separation action during the gear shifting process is completed by the second clutch 24; if the gearbox under test is an MT gearbox or is not equipped with a clutch actuator, the clutch separation action is completed by the first clutch 23; thereby realizing the testing requirements of AMT and MT compatibility on one device.

[0069] The test equipment provided by the present invention can meet the test cycle of a single gearbox of 350 seconds to 480 seconds according to different test requirements, thereby ensuring the factory qualified rate of the gearbox. The test equipment can realize automatic loading and unloading. The operator only needs to place the gearbox to be tested on the loading and unloading station, and prepare the wiring harness, air pipe and oil pipe joints of the test equipment to connect with the gearbox. The test equipment will automatically transport the gearbox to the test station, and after the gearbox completes a series of project tests, it will automatically transport the gearbox to the unloading station. The test equipment provides a power source for testing the gearbox, a stable clamping operation and an automatic docking structure, and reliable speed and torque sensors, NVH vibration sensors, oil pressure and oil temperature sensors to ensure the accuracy of the test parameters. A simple and effective circulating roller conveying and positioning system ensures that the utilization rate of the equipment is maximized. For the MT gearbox, it also has a unique automatic docking gear selection and shifting docking mechanism, and a fully automatic gear selection and shifting actuator that automatically executes the gear selection and shifting action.

[0070] The test equipment can simulate the working state of the gearbox on the whole vehicle, realize road load simulation, gear parameter detection, automatic shifting with TCU communication, MT gearbox selection and shifting evaluation, gearbox oil pressure and oil temperature detection, NVH and other related test requirements. In addition, the test equipment can also be customized according to different test requirements to meet the needs of different users.

[0071] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

[0073] The principles and implementation methods of the present invention are described in this article using specific embodiments. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the attached claims.

Claims

1. A testing device compatible with AMT gearbox and MT gearbox, characterized in that: The invention comprises a frame, on which a movable input-end power device, a head seat device and an output-end power device are connected, a gear selection and shifting device is arranged above the frame, a lifting and positioning device is arranged inside the frame, and a conveying roller is arranged on one side of the lifting and positioning device; the head seat device is used to fix a gearbox, the input-end power device passes through the head seat device and is connected to the input end of the gearbox, and the output-end power device is connected to the output end of the gearbox; the gearbox is transported to the top of the lifting and positioning device through the conveying roller, the lifting and positioning device lifts and positions the gearbox upward, the head seat device is moved to fix the gearbox, and the input-end power device and the output-end power device are moved respectively to connect with the gearbox; The lifting and positioning device comprises a pre-positioning mechanism and a lifting and positioning mechanism, the pre-positioning mechanism is arranged on both sides of the lifting and positioning mechanism, the pre-positioning mechanism comprises a lifting cylinder, the lifting and positioning mechanism comprises a lifting module, and one side of the lifting and positioning mechanism is also provided with a gas-electric automatic docking structure docking with a gearbox; The head seat device includes a head seat, a moving mechanism is connected to the bottom of the head seat, the moving mechanism is used to drive the head seat to move, a flange adapter ring is fixedly connected to the side of the head seat away from the input-end power device, the inner circumference of the flange adapter ring is provided with a through hole connected to the head seat, and the input-end power device is connected to the gearbox through the through hole; a plurality of clamping tools arranged in a circumference are provided on the outer circumference of the flange adapter ring, and the clamping tool includes a tool shell and a clamping head slidably connected to the tool shell; a plurality of mounting holes are provided around the gearbox shell, the flange adapter ring is provided with a plurality of locating pins matched with the mounting holes, and the clamping head is used to press the gearbox shell onto the flange adapter ring; The shifting device comprises a support frame, on which a shifting actuator and a shifting conveying mechanism are installed, the shifting conveying mechanism is connected to a shifting docking mechanism, and the shifting conveying mechanism is used to drive the shifting docking mechanism to move, the shifting docking mechanism comprises a base plate, on which a first bearing seat and a second bearing seat are arranged, a shifting flexible shaft is passed through the first bearing seat, and a shifting flexible shaft is passed through the second bearing seat; the shifting actuator comprises a third driving mechanism and a fourth driving mechanism installed on the support frame, the output end of the third driving mechanism is connected to the shifting flexible shaft through a displacement sensor and a force sensor, and the other end of the shifting flexible shaft is connected to a first docking claw; the output end of the fourth driving mechanism is connected to the shifting flexible shaft through a displacement sensor and a force sensor, and the other end of the shifting flexible shaft is connected to a second docking claw; the shifting actuator also comprises a flexible shaft fixing seat installed on the support frame, the shifting flexible shaft and the shifting flexible shaft are passed through the flexible shaft fixing seat; the first docking claw is docked with the shift lever of the gearbox, and the second docking claw is docked with the shift lever of the gearbox; The input end power device comprises a first driving mechanism, the output end of the first driving mechanism is connected to a first clutch via a first torque limiter, and the end of the first clutch away from the first driving mechanism is connected to a second clutch.

2. The testing equipment compatible with AMT gearbox and MT gearbox according to claim 1, characterized in that: The conveyor roller includes a loading and unloading station, a buffer station and a test docking station. The buffer station is located on one side of the loading and unloading station. The test docking station is arranged at the end of the loading and unloading station and is located on the frame. The lifting and positioning device is arranged in the test docking station.

3. The testing equipment compatible with AMT gearbox and MT gearbox according to claim 1, characterized in that: The output end power device comprises a second driving mechanism, the output end of the second driving mechanism is connected to a second torque limiter, the second torque limiter is connected to a gearbox spline adapter, and the gearbox spline adapter is connected to the gearbox.

4. The testing equipment compatible with AMT gearbox and MT gearbox according to claim 1, characterized in that: The support frame is also equipped with a first NVH conveying assembly, a second NVH conveying assembly and a third NVH conveying assembly, the first NVH conveying assembly and the second NVH conveying assembly are located on both sides of the support frame, and the third NVH conveying assembly is located at the rear end of the support frame; the first NVH conveying assembly is connected to a first NVH test unit, and the first NVH conveying assembly is used to drive the first NVH test unit to move to test the gearbox; the second NVH conveying assembly is connected to a second NVH test unit, and the second NVH conveying assembly is used to drive the second NVH test unit to move to test the gearbox; the third NVH conveying assembly is connected to a third NVH test unit, and the third NVH conveying assembly is used to drive the third NVH test unit to move to test the gearbox.

5. The testing equipment compatible with AMT gearbox and MT gearbox according to claim 4, characterized in that: The first NVH test unit, the second NVH test unit and the third NVH test unit each include an NVH vibration sensor.

6. A testing method, characterized in that: The testing device for compatibility between an AMT gearbox and an MT gearbox according to any one of claims 1 to 5 is applied, and the testing method comprises the following steps: Step 1: The operator lifts the gearbox to be tested at the loading and unloading station and places it on the conveyor roller, connects the communication cable, air pipe and oil pipe of the test equipment to the gearbox, and presses the release button when ready; at this time, if the test equipment is in an idle state, the conveyor roller will automatically send the gearbox to the test docking station; if there is a gearbox in the test docking station, the conveyor roller will automatically send the gearbox to the cache station; Step 2: When the gearbox arrives at the test docking station, the pre-positioning mechanism lifts up the gearbox to help it align, and then the lifting and positioning mechanism lifts and positions the gearbox; Step 3: The headstock device moves to the specified position through the moving mechanism. At this time, the flange adapter ring is docked with the gearbox housing. After receiving the signal, the clamping tooling clamps the gearbox stably to the headstock device through the clamping head. During this process, the gas-electric automatic docking structure will rise and automatically connect with the corresponding structure on the gearbox. At this time, the gas circuit and communication cable in the test equipment will form a loop with the gearbox TCU to establish communication; Step 4: The headstock device and the gearbox move to the working position through the moving mechanism. During this process, the spline of the gearbox and the second clutch are automatically connected; Step 5: If the gearbox is an AMT gearbox, the first NVH test unit, the second NVH test unit, and the third NVH test unit in the gear selection device are transported to the working position through the first NVH conveying assembly, the second NVH conveying assembly, and the third NVH conveying assembly, respectively, and then the NVH vibration sensor in each NVH test unit contacts the corresponding position of the gearbox; Step 6: If the gearbox is an MT gearbox, in addition to completing the above step 5 process, the gear selection and shifting conveying mechanism transports the gear selection and shifting docking mechanism to the working position, the first docking claw in the gear selection and shifting docking mechanism docks with the gear shift lever of the gearbox, and the second docking claw docks with the gear selection lever of the gearbox; Step 7: When the above steps 5 and 6 are in action, the output end power device automatically moves forward to complete automatic docking with the output end of the gearbox; Step 8. After all automatic docking is completed, the test equipment starts to perform road load simulation for the gearbox according to the established procedures, including gear parameter detection, automatic gear shifting through communication with the TCU, gear selection and shifting evaluation of the MT gearbox, gearbox oil pressure and oil temperature detection, and NVH testing requirements. Among them, if the gearbox under test is an AMT gearbox with its own clutch actuator, the clutch separation action during the gear shifting process is completed by the second clutch; if the gearbox under test is an MT gearbox or does not have a clutch actuator, the clutch separation action is completed by the first clutch.

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