Gearbox actuator test tool

Abstract

The utility model discloses a gearbox actuator testing tool which comprises a supporting and positioning rack, a pneumatic testing air nozzle, a lifting unit and a load simulation unit. The supporting and positioning rack comprises a bottom plate, a pair of side plates and a positioning block, mounting grooves are formed in the tops of the side plates, and the positioning block is arranged in the mounting grooves in a protruding mode and matched with the rapid clamping pressing block to achieve accurate positioning and fixing of the to-be-tested actuator; the lifting unit adopts a lever linkage structure, comprises a connecting frame, a sliding mounting seat, a lifting shaft, a driving handle and a hinging piece, and can drive the pneumatic test air tap to lift stably to realize quick butt joint or separation; the load simulation unit comprises a servo motor, a speed reducer, a driving gear and a transmission chain, the parallel shaft large center distance layout is adapted through chain transmission, the dynamic load torque is accurately output, the tool is high in compatibility, convenient to operate, accurate in test data and suitable for on-load performance test of gearbox actuators of various models, and the test efficiency is improved. Compared with the prior art, the test efficiency and accuracy can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox detection equipment technical field, concretely relates to a gearbox actuator test tool. BACKGROUND

[0002] Gearbox actuator is the core control component of gearbox, and its performance directly determines the key indicators such as gear shifting response speed and clutch combination smoothness of gearbox, so it needs to be strictly tested for on-load performance before leaving factory.

[0003] At present, there is an independent testing device for gearbox actuator in the industry, and the closest prior art is the utility model patent with publication number CN218725315U, which discloses a test and reliability test device for gearbox gear selection and shifting execution mechanism, which comprises a gear selection and shifting shaft simulation box assembly and a gear shifting load simulation mechanism assembly. The gear selection and shifting shaft simulation box assembly is connected with the gear selection and shifting shaft of the execution mechanism, and the gear shifting load simulation mechanism assembly (including push rod assembly, load spring, sensor and other components) is used to simulate the load, so as to realize the independent test of the execution mechanism from the gearbox assembly, and to a certain extent, solve the problem of interference of traditional whole machine test data.

[0004] But the above-mentioned prior art and other test tools in the industry still have the following defects: first, the load simulation precision is low and the adaptability is poor. The prior art uses load spring to simulate load, which can only provide static load and cannot flexibly adjust the torque size and direction, making it difficult to simulate dynamic load under complex working conditions of real vehicle. Moreover, the load mechanism is connected through a slide rail, which can only adapt to execution mechanisms with specific center distance, and cannot be compatible with installation layouts with parallel shafts and large center distance. Second, the positioning compatibility and convenience are insufficient. The gear selection and shifting shaft simulation box of the prior art adopts a multi-axis integrated interface box tool, which is a combined structure, but when adapting to different types of actuators, the interface module needs to be replaced, the debugging period is long, and there is no quick clamping and precise positioning structure, which cannot guarantee the stable installation of the actuator in the real vehicle posture. Third, the pneumatic docking operation is complicated. The prior art does not provide a special pneumatic interface docking mechanism, and the traditional tool adopts a manual push air nozzle to realize docking, which not only has high labor intensity, but also cannot guarantee the docking accuracy, and is prone to air leakage, affecting the accuracy of test data. Fourth, it is not convenient to disassemble and maintain. The load simulation mechanism and the slide rail mechanism of the prior art are fixedly connected, and the lifting drive unit is usually an integrated structure. When replacing parts or debugging, the whole unit needs to be disassembled, which is low in operation efficiency.

[0005] Therefore, on the basis of the existing patent technology, it is necessary to develop a gearbox actuator test tool with strong compatibility, convenient pneumatic docking, accurate load simulation and convenient disassembly and maintenance, which has become a technical problem to be solved in the field. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at solving one of the technical problems existing in the prior art.

[0007] The application provides a gearbox actuator test tool, which comprises a support positioning rack, a pneumatic test air nozzle, a lifting unit and a load simulation unit.

[0008] The support positioning rack comprises a bottom plate and a pair of side plates.

[0009] The support positioning rack further comprises a positioning block, which is protruded in one of the installation grooves and used for positioning the gearbox actuator by cooperating with the corresponding position on one side of the gearbox actuator.

[0010] The lifting unit comprises a connecting frame, a sliding mounting seat, a lifting shaft, a driving handle and a hinge piece.

[0011] The hinge end of the driving handle and the mounting seat is in a bent shape.

[0012] The hinge piece comprises a pair of symmetrical hinge plates.

[0013] The connecting frame comprises a horizontal plate, a vertical plate and a quick-release plate.

[0014] A sleeve is arranged between the quick-release plate and the vertical plate.

[0015] A gasket is arranged between the sleeve and the quick-release plate.

[0016] The load simulation unit comprises a servo motor, a speed reducer, a driving gear and a transmission chain, the input end of the speed reducer is connected with the servo motor, the output end of the speed reducer is provided with the driving gear, and the transmission chain is in transmission connection with the driving gear and the to-be-tested gearbox actuator.

[0017] The utility model discloses the beneficial effects are as follows:

[0018] 1、compared with the spring static load of prior art patent, the load simulation unit of the present application adopts the transmission scheme of "servo motor + speed reducer + driving gear + transmission chain", and the size and direction of output torque can be flexibly adjusted by controlling the rotating speed and rotating direction of the servo motor, and the dynamic load under the complex working condition of the real vehicle can be accurately simulated; meanwhile, the transmission mode of the chain breaks through the coaxial restriction of rigid connection in the prior art, and can be adapted to the installation layout of parallel shafts and large center distance, and the adaptation range is significantly widened.

[0019] 2、compared with the multi-shaft integrated interface box of prior art patent, the support positioning rack adopts the combined structure of "bottom plate + side plate + positioning block + quick clamping pressing block", the mounting groove at the top of the side plate can realize preliminary limiting, the boss-shaped positioning block is matched with the actuator positioning hole (the matching gap is 0.05~0.1mm), the actuator can be accurately positioned in the real vehicle posture, and the actuator in a certain size range can be adapted, the interface module does not need to be frequently replaced, and the compatibility and debugging efficiency of the tool are greatly improved.

[0020] 3、compared with the defect that the prior art does not have a special pneumatic docking mechanism, the lifting unit of the present application adopts a lever linkage structure, and the operator only needs to exert a small prying force, and the lifting shaft can be stably lifted through the driving handle and the hinge piece, the pneumatic test air nozzle and the actuator are quickly docked or separated; the symmetrical double-hinge plate structure of the hinge piece and the hollow design in the middle ensure the stability of the air nozzle movement and the docking accuracy, reduce the risk of air leakage, and solve the cumbersome problem of manual docking.

[0021] 4、the connecting frame adopts a detachable structure of "horizontal plate + vertical plate + quick release plate", compared with the design that the load mechanism and the sliding rail are fixedly connected in the prior art, the fixing bolt of the quick release plate only needs to be unscrewed to complete the disassembly and assembly of the components, the entire unit does not need to be disassembled, the setting of the sleeve and the gasket ensures the stability of the connection, significantly shortens the tool debugging time, and improves the test efficiency.

[0022] 5、each unit is modularly designed, the layout is compact and reasonable, the operation convenience and test accuracy are considered, the unit can be widely applied to the factory performance test of different types of pneumatic gearbox actuators, compared with the special structure of the prior art, the unit has higher popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a three-dimensional view of the gearbox actuator test tool in the embodiments of the present application.

[0024] Fig. 2 It is a perspective view of the gearbox actuator test tool in the embodiment of the present application;

[0025] Fig. 3 It is a perspective view of the sliding mounting seat, lifting shaft, driving handle and hinged piece assembly state in the embodiment of the present application.

[0026] Reference signs

[0027] 1 - support positioning rack, 11 - side plate, 12 - bottom plate, 13 - mounting groove, 14 - positioning block, 2 - pneumatic test nozzle, 3 - lifting unit, 31 - connecting frame, 311 - cross plate, 312 - vertical plate, 313 - quick release plate, 314 - sleeve, 315 - washer, 32 - sliding mounting seat, 33 - lifting shaft, 34 - driving handle, 35 - hinged piece, 4 - load simulation unit, 41 - servo motor, 42 - reducer, 43 - driving gear, 100 - gearbox actuator. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0029] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, not to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0030] The gearbox actuator test tool provided by the embodiments of the present application will be described in detail below in combination with the drawings, through specific embodiments and their application scenarios.

[0031] Embodiment 1:

[0032] This application provides a gearbox actuator testing fixture, including a support and positioning stand 1, a pneumatic test nozzle 2, a lifting unit 3, and a load simulation unit 4. The support and positioning stand 1 is used to position and install the gearbox actuator 100 under test in a real vehicle installation posture, and is used to drive the pneumatic test nozzle 2 to reciprocate in the vertical direction to achieve rapid docking or separation with the gearbox actuator 100 under test. The output end of the load simulation unit 4 is connected to the power output shaft of the gearbox actuator 100 under test, and is used to output dynamic load torque to the gearbox actuator 100 under test.

[0033] In this embodiment of the application, the support positioning platform 1 includes a base plate 12 and a pair of side plates 11. The pair of side plates 11 are fixed on the top of the base plate 12. Each side plate 11 has a mounting groove 13 on its inner side. The pair of mounting grooves 13 are used to accommodate and position the two sides of the gearbox actuator 100 under test.

[0034] In this embodiment of the application, the support positioning platform 1 further includes a positioning block 14, which protrudes into one of the mounting slots 13 and is used to cooperate with the corresponding position on one side of the gearbox actuator 100 under test to achieve positioning of the gearbox actuator 100 under test.

[0035] like Figs. 1-3 As shown, due to the above structure, when testing the transmission actuator, the transmission actuator 100 under test is first placed between a pair of side plates 11 of the support positioning stand 1, so that the two sides of the transmission actuator 100 under test are correspondingly embedded in the mounting grooves 13 on the inner top of the two side plates 11. The mounting grooves 13 form a preliminary limiting constraint on the actuator, preventing the actuator from shifting in the horizontal direction, thereby achieving the positioning and installation of the transmission actuator 100 under test in the same posture as the actual vehicle installation, ensuring that the test conditions are consistent with the actual vehicle conditions; then, the lifting unit 3 drives the pneumatic test nozzle 2 to move downward in the vertical direction until the pneumatic test nozzle 2 is aligned with the transmission actuator under test. The air source interface of the actuator 100 is precisely connected to provide the air source required for the test of the actuator. After the air nozzle is connected, the output end of the load simulation unit 4 establishes a transmission connection with the power output shaft of the transmission actuator 100 under test. The load simulation unit 4 starts and outputs dynamic load torque, which is transmitted to the power output shaft of the actuator under test to simulate the load resistance borne by the actuator during the actual vehicle operation, thereby completing the load performance test of the transmission actuator 100 under test. After the test, the lifting unit 3 drives the pneumatic test air nozzle 2 to move upward in the vertical direction to realize the rapid separation of the air nozzle from the actuator under test, making it easy for the operator to remove the actuator under test.

[0036] Example 2:

[0037] In this embodiment, in addition to the structural features of the aforementioned embodiments, the lifting unit 3 includes a connecting frame 31, a sliding mounting base 32, a lifting shaft 33, a drive handle 34, and a hinge 35. One end of the connecting frame 31 is hinged to the top of the supporting positioning platform 1, and the other end extends vertically upward. The sliding mounting base 32 is slidably mounted on the upper end of the connecting frame 31. The lifting shaft 33 passes through the sliding mounting base 32 and reciprocates along its own vertical axis. The lower end of the lifting shaft 33 is fixedly connected to the pneumatic test nozzle 2. One end of the drive handle 34 is hinged to the sliding mounting base 32, and both ends of the hinge 35 are respectively hinged to the middle of the drive handle 34 and the top end of the lifting shaft 33, forming a lever linkage structure.

[0038] In this embodiment of the application, the hinge end of the drive handle 34 and the mounting base is bent, one end of the hinge member 35 is hinged to the bent part of the drive handle 34, and the middle part of the hinge member 35 is hollow to avoid the hinge point between the drive handle 34 and the mounting base.

[0039] In this embodiment of the application, the hinge 35 includes a pair of symmetrically arranged hinge plates, each hinge plate having a central portion that protrudes outwards, one end of which is hinged to the drive handle 34, and the other end of which is hinged to the top of the lifting shaft 33.

[0040] like Figs. 1-3 As shown, due to the aforementioned structure, when adjusting the docking state between the pneumatic test nozzle 2 and the gearbox actuator 100 under test, the operator moves the drive handle 34. Because one end of the drive handle 34 is hinged to the sliding mounting base 32, and the hinge end is bent, the drive handle 34 will swing around this hinge point as a fulcrum. At this time, one end of the hinge member 35 is hinged to the bent part of the drive handle 34, and the hollow structure in the middle can effectively avoid the hinge point between the drive handle 34 and the sliding mounting base 32, preventing interference between the two. At the same time, the hinge member 35... The other end of 5 is hinged to the top of the lifting shaft 33. When the drive handle 34 swings, it will drive the lifting shaft 33 to reciprocate along its own vertical axis in the sliding mounting seat 32 through the hinge 35, thereby driving the pneumatic test nozzle 2, which is fixed to the lower end of the lifting shaft 33, to smoothly approach or move away from the gearbox actuator 100 under test. The whole process is achieved by lever linkage structure, which only requires a small amount of force to adjust the lifting of the nozzle, greatly improving the convenience of nozzle docking and disassembly, while ensuring the stability and accuracy of the nozzle movement process.

[0041] Example 3:

[0042] In this embodiment, in addition to the structural features of the aforementioned embodiments, the connecting frame 31 includes a horizontal plate 311, a vertical plate 312, and a quick-release plate 313. The horizontal plate 311 is fixed on the support positioning frame 1, the vertical plate 312 is installed on the vertical plate 312 by bolts, and the quick-release plate 313 is detachably installed on the upper end of the vertical plate 312 by bolts.

[0043] In this embodiment of the present application, a sleeve 314 is provided between the quick-release plate 313 and the upright plate 312, and the sleeve 314 is fitted on the outside of the bolt.

[0044] In this embodiment of the application, a washer 315 is provided between the sleeve 314 and the quick-release plate 313.

[0045] like Figs. 1-3 As shown, due to the above-mentioned structure, when assembling the connecting frame 31 of the lifting unit 3, the horizontal plate 311 is first fixed on the support positioning frame 1, and then the vertical plate 312 is installed on the horizontal plate 311 with bolts. Next, the sleeve 314 is fitted onto the outside of the bolts used to connect the quick-release plate 313 and the vertical plate 312, and the washer 315 is placed between the sleeve 314 and the quick-release plate 313. Finally, the bolts are tightened to complete the assembly of the quick-release plate 313 on the upper end of the vertical plate 312. The sleeve 314 ensures the coaxiality of the bolts during the connection process, preventing bolt misalignment and loosening of the connection. Meanwhile, the washer 315... It can effectively buffer the pressure generated when tightening the bolts and prevent the connection surface between the quick-release plate 313 and the upright plate 312 from being worn due to compression. When it is necessary to adapt to different specifications of the gearbox actuator 100 under test and replace the relevant parts of the lifting unit 3, the operator only needs to unscrew the bolts connecting the quick-release plate 313 and the upright plate 312 to quickly remove the quick-release plate 313 from the upright plate 312, and then replace or adjust the sliding mounting seat 32, lifting shaft 33 and other parts without disassembling the entire connecting frame 31, which significantly shortens the tooling debugging time and improves the tooling's compatibility with different models of actuators.

[0046] Example 4:

[0047] In this embodiment, in addition to the structural features of the aforementioned embodiments, the load simulation unit 4 includes a servo motor 41, a reducer 42, a drive gear 43, and a transmission chain. The input end of the reducer 42 is connected to the servo motor 41, the output end of the reducer 42 is equipped with the drive gear 43, and the transmission chain is connected to the drive gear 43 and the gearbox actuator 100 under test.

[0048] like Figs. 1-3As shown, when the dynamic load torque is loaded to the to-be-tested gearbox actuator 100, the servo motor 41 starts and outputs power, the power is transmitted to the input end of the speed reducer 42, after the speed reduction and torque increase treatment of the speed reducer 42, the power is transmitted from the output end of the speed reducer 42 to the driving gear 43 connected thereto, driving the driving gear 43 to rotate; the driving gear 43 is in transmission connection with the power output end of the to-be-tested gearbox actuator 100 through the transmission chain, the rotation of the driving gear 43 will drive the power output shaft of the to-be-tested actuator to rotate synchronously through the transmission chain, at this time, the torque output by the load simulation unit 4 is transmitted to the to-be-tested gearbox actuator 100 through the transmission path of "servo motor 41→speed reducer 42→driving gear 43→transmission chain→power output shaft of to-be-tested actuator"; by controlling the rotation speed and rotation direction of the servo motor 41, the output torque size and direction can be flexibly adjusted, so as to simulate various load conditions faced by the actuator in the actual vehicle operation, and the performance test of the to-be-tested gearbox actuator 100 under different load conditions is completed; at the same time, the chain transmission mode adapts the installation center distance between the driving gear 43 and the power output end of the to-be-tested actuator, avoiding the problem that the torque cannot be transmitted due to the too large distance between the two.

[0049] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0050] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A gearbox actuator test fixture, characterized by, The device comprises a support positioning rack, a pneumatic test nozzle, a lifting unit and a load simulation unit, the support positioning rack is used for positioning the tested gearbox actuator in the real vehicle installation posture, the pneumatic test nozzle is driven to move up and down to realize quick docking or separation with the tested gearbox actuator, the output end of the load simulation unit is in transmission connection with the power output shaft of the tested gearbox actuator to output dynamic load torque to the tested gearbox actuator.

2. A gearbox actuator test fixture according to claim 1, wherein, The support positioning rack comprises a bottom plate and a pair of side plates, the pair of side plates are fixed on the top of the bottom plate, each side plate is provided with a mounting groove on the inner top, and the two mounting grooves are used for accommodating two sides of the tested gearbox actuator.

3. A gearbox actuator test fixture according to claim 2, wherein, The support positioning rack further comprises a positioning block, which is protruded in one of the mounting grooves and used for cooperating with the corresponding position of one side of the tested gearbox actuator to realize the positioning of the tested gearbox actuator.

4. A test fixture for a gearbox actuator according to claim 1, wherein, The lifting unit comprises a connecting frame, a sliding mounting seat, a lifting shaft, a driving handle and a hinge, one end of the connecting frame is hinged to the top of the support positioning rack, and the other end extends vertically upward; the sliding mounting seat is slidingly assembled on the upper end of the connecting frame, the lifting shaft is arranged in the sliding mounting seat and moves up and down along the vertical axis of the lifting shaft, and the lower end of the lifting shaft is fixedly connected with the pneumatic test nozzle; one end of the driving handle is hinged to the sliding mounting seat, and the hinge is hinged to the middle part of the driving handle and the top end of the lifting shaft, thereby forming a lever linkage structure.

5. A gearbox actuator test fixture according to claim 4, wherein, The hinged end of the driving handle and the mounting seat is in a bent shape, one end of the hinge is hinged to the bent part of the driving handle, and the middle part of the hinge is hollow to avoid the hinge point of the driving handle and the mounting seat.

6. A gearbox actuator test fixture according to claim 4, wherein, The hinge comprises a pair of symmetrical hinge plates, the middle part of each hinge plate is outwardly protruded, one end of each hinge plate is hinged to the driving handle, and the other end is hinged to the top end of the lifting shaft.

7. A test fixture for a gearbox actuator according to claim 4, wherein, The connecting frame comprises a horizontal plate, a vertical plate and a quick release plate, the horizontal plate is fixedly arranged on the support positioning rack, the vertical plate is installed on the vertical plate by bolts, and the quick release plate is detachably installed on the upper end of the vertical plate by bolts.

8. A gearbox actuator test fixture according to claim 7, wherein, A sleeve is arranged between the quick release plate and the vertical plate, and the sleeve is arranged outside the bolt.

9. A gearbox actuator test fixture according to claim 8, wherein, A gasket is arranged between the sleeve and the quick release plate.

10. A test fixture for a gearbox actuator according to claim 1, wherein, The load simulation unit comprises a servo motor, a speed reducer, a driving gear and a transmission chain, the input end of the speed reducer is connected with the servo motor, the output end of the speed reducer is provided with the driving gear, and the transmission chain is in transmission connection with the driving gear and the tested gearbox actuator.

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