A high and low temperature durability test equipment for a wire-controlled shifter

Abstract

The invention discloses a high and low temperature durability test equipment for a wire-controlled shifter, which is provided with a host computer, a shift drive device, a fixed tooling, and a high and low temperature test box for a shifter with adjustable indoor temperature, and can be used for durability testing of a wire-controlled shifter under set high and low temperature conditions. Moreover, by adopting a universal shift drive mechanism, when a locking end plate is not installed, the shift rod of a push rod-type shifter can be driven to reciprocate and rotate, and a durability test of reciprocating and cyclic switching of the push rod-type shifter of this type with the shift rod rotating in different gears can be realized. When the locking end plate is installed, the shift rod of the push rod-type shifter can be driven to reciprocate and linearly move in the X and Y directions respectively, and a durability test of reciprocating and cyclic switching of the push rod-type shifter of this type with the shift rod moving in a straight line or a broken line can be realized at different gears; the invention has strong versatility, can save equipment costs, and reduce tooling switching time when durability tests are performed on different types of push rod-type shifters.

Description

Technical Field

[0001] The invention relates to a high and low temperature durability testing device for a wire-controlled shifter. Background Art

[0002] At present, the gear shift control of mass-produced models on the market mostly uses cables to pull the gear shift rocker to achieve gear shifting. Its disadvantages are: the cables take up space and the cables are perforated on the body, which reduces the sealing performance of the body; the handling feel is not good; the vibration generated by the gearbox is transmitted to the cab through the cables, and the NVH performance is poor, affecting the driving experience. The shifting method of the wire-controlled shifter overcomes the above shortcomings of the cable-type shifting, has good NVH performance, meets the needs of intelligent driving, conforms to the trend of automobile electrification and intelligence, and has higher safety and reliability. In view of this, the wire-controlled shifter will become an important development trend in the field of shift control in the future.

[0003] The shift-by-wire system consists of a shifter and an actuator, which can be used with both traditional fuel vehicles and new energy vehicles, and has strong platform versatility. The shifter can be operated by a shift lever, with P / R / N / D and MS gear positions. By operating the shift lever, the Hall sensor is triggered to send an electrical signal to the shifter controller, which controls the actuator to move and drives the gearbox shift rocker arm to complete the shift operation.

[0004] The application of wire-controlled shifters in the market has not yet been popularized, and the supporting durability test equipment can hardly meet the needs of new product development and testing. Existing high and low temperature durability test equipment for shifters generally only tests the durability performance of the shifter structure, and cannot synchronously monitor and judge the accuracy of the angle values ​​of each gear position of the shifter in real time, and cannot monitor the gear angle and execution time of the actuator, so it is impossible to examine the reliability of the control strategy of the shifter during the durability test. Therefore, it is particularly urgent to develop a highly versatile high and low temperature durability test equipment for wire-controlled shifters. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a high and low temperature durability testing device for a wire-controlled shifter.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0007] A high and low temperature durability testing equipment for a wire-controlled shifter, characterized in that: the high and low temperature durability testing equipment for a wire-controlled shifter is provided with a host computer, a shift drive device, a fixed tooling and a high and low temperature test chamber for the shifter with adjustable indoor temperature; the shift drive device and the fixed tooling are both installed in the room of the high and low temperature test chamber for the shifter, the tested wire-controlled shifter is fixed on the fixed tooling, the host computer is electrically connected to the control end of the shift drive device to control the shift drive device to drive the shift lever of the tested wire-controlled shifter.

[0008] As a preferred embodiment of the present invention: the high and low temperature durability test equipment for the wire-controlled shifter is also provided with a CAN bus analyzer, a shift actuator, a gearbox and an actuator high and low temperature test chamber with adjustable indoor temperature;

[0009] The shift actuator and the gearbox are both placed in the room of the actuator high and low temperature test chamber, the shift actuator is connected to the shift rocker arm of the gearbox, the tested wire-controlled shifter communicates with the shift actuator through a connecting wire harness, so that the control signal sent by the tested wire-controlled shifter when its shift lever performs a shifting action can be sent to the shift actuator through the connecting wire harness, so as to control the shift actuator to drive the gearbox to perform a shifting operation;

[0010] Furthermore, the connecting wire harness is also electrically connected to the host computer via the CAN bus analyzer, so that the host computer can collect the communication signal between the tested wire-controlled shifter and the shift actuator via the CAN bus analyzer.

[0011] As a preferred embodiment of the present invention: the tested wire-controlled shifter is a tested push-rod type shifter, and the shift drive device is a universal shift drive device, which is provided with an X-direction drive mechanism, a Y-direction drive mechanism and the universal shift drive mechanism;

[0012] The universal gear shift drive mechanism is provided with a transmission mechanism and a lifting mechanism;

[0013] The transmission mechanism comprises a hinge seat, a joint bearing, a bearing pressure cover, a shift arm and a locking end plate; the hinge seat is provided with a mounting through hole, and the bottom of the hole wall of the mounting through hole is provided with a lower boss; the joint bearing is installed in the mounting through hole so that the outer ring of the joint bearing sits on the lower boss; the bearing pressure cover is fixed on the hinge seat so that the bearing pressure cover presses the outer ring of the joint bearing onto the lower boss; the upper end of the shift arm is fixedly installed in the inner ring of the joint bearing, and the lower end of the shift arm is used to connect the shift rod of the push rod type shifter under test; the bottom surface of the locking end plate is provided with a groove, and the locking end plate is detachably mounted on the hinge seat, and when the locking end plate is mounted on the hinge seat, the upper end of the shift arm is embedded in the groove of the locking end plate to fix the shift arm relative to the hinge seat;

[0014] The lifting mechanism can drive the hinge seat to move up and down in the vertical direction, and the axial direction of the mounting through hole of the hinge seat is kept in the vertical direction;

[0015] The X-direction driving mechanism and the Y-direction driving mechanism can drive the hinge seat to move back and forth in the X-direction and the Y-direction respectively through the lifting mechanism, wherein the X-direction and the Y-direction are any two directions perpendicular to each other on a horizontal plane;

[0016] The lower end of the shift arm is fixedly connected to the shift rod of the push rod type shifter under test, and during the durability test of the push rod type shifter under test, the height of the hinge seat in the vertical direction is driven by controlling the lifting mechanism, so that: the gravity of the hinge seat will not act on the shift arm through the joint bearing.

[0017] As a preferred embodiment of the present invention: the mounting through hole of the hinge seat is a two-stage stepped hole consisting of a large diameter hole and a small diameter hole, and the large diameter hole is located above the small diameter hole, and the spherical bearing is installed in the small diameter hole of the mounting through hole; the bearing pressure cover is composed of a cover plate portion and a tube body portion connected to the bottom surface of the cover plate portion, the cover plate portion and the tube body portion of the bearing pressure cover are respectively located on the bottom surface of the large diameter hole and the top surface of the outer ring, and the cover plate portion is connected and fixed to the hinge seat by bolts, so that the tube body portion presses the outer ring of the spherical bearing against the lower boss.

[0018] As a preferred embodiment of the present invention: the universal shift drive mechanism is further provided with a tension and pressure detection mechanism, which comprises an outer frame, an inner frame, an X-direction tension and pressure sensor and a Y-direction tension and pressure sensor;

[0019] The inner frame is located in the inner space of the outer frame, and the inner frame and the outer frame are connected by an X-guide rod, so that the inner frame can slide relative to the outer frame along the X direction; the hinge seat is located in the inner space of the inner frame, and the hinge seat and the inner frame are connected by a Y-guide rod, so that the hinge seat can slide relative to the inner frame along the Y direction;

[0020] The shell of the X-direction tension pressure sensor is fixed to the outer frame through an X-direction mounting bracket, the force-bearing end of the X-direction tension pressure sensor is fixedly connected to the inner frame through an X-direction connecting rod, and the force-bearing end of the X-direction tension pressure sensor is telescopic along the X-direction; the shell of the Y-direction tension pressure sensor is fixed to the inner frame through a Y-direction mounting bracket, the force-bearing end of the Y-direction tension pressure sensor is fixedly connected to the hinge seat through a Y-direction connecting rod, and the force-bearing end of the Y-direction tension pressure sensor is telescopic along the Y-direction;

[0021] The lifting mechanism directly drives the outer frame to move up and down in the vertical direction, and indirectly drives the hinge seat to move up and down in the vertical direction through the tension and pressure detection mechanism.

[0022] Among them, preferably: the inner frame and the outer frame are connected by two X-guide rods, and the two X-guide rods are respectively located on both sides of the X-direction connecting rod; the hinge seat and the inner frame are connected by two Y-guide rods, and the two Y-guide rods are respectively located on both sides of the Y-direction connecting rod.

[0023] Wherein, preferably: the X-direction mounting bracket is composed of two X-direction pillars and an X-direction pressure plate fixed between the outer ends of the two X-direction pillars, the inner ends of the two X-direction pillars are fixed to the outer frame, the X-direction tension pressure sensor is located between the two X-direction pillars, and the housing of the X-direction tension pressure sensor is fixed to the X-direction pressure plate;

[0024] The Y-axis mounting bracket is composed of two Y-axis pillars and a Y-axis pressure plate fixed between the outer ends of the two Y-axis pillars, the inner ends of the two Y-axis pillars are fixed on the inner frame, the Y-axis tensile pressure sensor is located between the two Y-axis pillars, and the shell of the Y-axis tensile pressure sensor is fixed on the Y-axis pressure plate.

[0025] Among them, preferably: the tension and pressure detection mechanism also contains an X-direction detection connecting rod and a Y-direction detection connecting rod; the X-direction detection connecting rod is fixed on the inner frame and passes through a through hole opened on the outer frame to the outside of the outer frame, and the X-direction detection connecting rod is coaxial with the X-direction connecting rod; the Y-direction detection connecting rod is fixed on the hinge seat and passes through a through hole opened on the inner frame to the outside of the inner frame, and the Y-direction detection connecting rod is coaxial with the Y-direction connecting rod.

[0026] As a preferred embodiment of the present invention: the lifting mechanism is provided with a fixed plate, a lifting cylinder and a guide assembly, the fixed plate is located above the outer frame, the cylinder body of the lifting cylinder is fixed on the fixed plate, the piston rod of the lifting cylinder is fixedly connected to the outer frame through a connecting piece, and the guide assembly is installed between the fixed plate and the outer frame, wherein the piston rod of the lifting cylinder is telescoped in the vertical direction, and the guide assembly is used to guide the outer frame to move up and down in the vertical direction relative to the fixed plate.

[0027] Among them, preferably: the outer frame is a rectangular frame, the lifting mechanism is provided with two lifting cylinders and four guide assemblies, the two lifting cylinders are respectively arranged on two opposite frame edges of the rectangular frame, and the four guide assemblies are respectively arranged at four corners of the rectangular frame.

[0028] As a preferred embodiment of the present invention: the universal gear shift drive device is provided with a plurality of the universal gear shift drive mechanisms; the lifting mechanisms of the respective universal gear shift drive mechanisms are fixed, and the X-direction drive mechanism and the Y-direction drive mechanism synchronously drive the hinge seats of the respective universal gear shift drive mechanisms to move back and forth in the X direction and the Y direction respectively through the fixed lifting mechanisms.

[0029] As a preferred embodiment of the present invention: the universal gear shift drive device is also provided with a Z-direction drive mechanism, the lifting mechanism is installed on the X-direction drive mechanism, the X-direction drive mechanism is installed on the Y-direction drive mechanism, and the Y-direction drive mechanism is installed on the Z-direction drive mechanism, so that the Z-direction drive mechanism can drive the X-direction drive mechanism, the Y-direction drive mechanism and the lifting mechanism to move up and down in the Z direction, and the height of the universal gear shift drive device is suitable for testing different models of gear shifter products.

[0030] As a preferred embodiment of the present invention: the fixing fixture is installed in the room of the high and low temperature test box of the gear shifter through a height adjustment mechanism to adapt to high and low temperature durability tests of gear shifter products of different models.

[0031] As a preferred embodiment of the present invention: lighting devices are installed in the interiors of the shifter high and low temperature test chamber and the actuator high and low temperature test chamber to facilitate observation of the test sample status.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] First, the present invention is provided with a host computer, a shift drive device, a fixed tooling and a high and low temperature test box for a shifter with adjustable indoor temperature, which can be used for durability testing of a tested wire-controlled shifter under set high and low temperature conditions.

[0034] Second, the universal shift drive mechanism of the present invention can drive the shift rod of the push rod type shifter to reciprocate and rotate when the locking end plate is not installed, so as to realize the endurance test of the push rod type shifter of this type with the shift rod rotating to perform reciprocating cyclic switching at different gears; when the locking end plate is installed, the shift rod of the push rod type shifter can be driven to reciprocate and linearly move in the X direction and the Y direction respectively, so as to realize the endurance test of the push rod type shifter of this type with the shift rod moving linearly or in a broken line to perform reciprocating cyclic switching at different gears; therefore, the present invention has the advantages of strong versatility, can save equipment costs, and reduce tooling switching time and man-hours when performing endurance tests on different types of push rod type shifters;

[0035] Furthermore, the present invention can simulate the working condition of the shift lever when being operated by the driver by cooperating with the control of the lifting mechanism.

[0036] Third, the universal shift drive mechanism of the present invention is provided with a pulling and pressure detection mechanism, and utilizes the X-direction pulling and pressure sensor and the Y-direction pulling and pressure sensor of the pulling and pressure detection mechanism to detect in real time the X-direction and Y-direction push and pull forces respectively generated by the hinge seat through the joint bearing on the upper end of the shift arm, so as to realize real-time monitoring of the shift force values ​​of the tested push rod type shifter in the X-direction and Y-direction during the shifting process.

[0037] Fourthly, the universal gear shift drive mechanism of the present invention has the advantages of compact structure and small occupied space.

[0038] Fifth, the present invention can provide high and low temperature working conditions independent of the tested wire-controlled shifter for the shift actuator and the gearbox by adding a CAN bus analyzer, a shift actuator, a gearbox and an actuator high and low temperature test chamber, so as to cooperate with the tested wire-controlled shifter to carry out durability testing; and the host computer can collect the communication signal between the tested wire-controlled shifter and the shift actuator through the CAN bus analyzer, so as to monitor and record in real time the various gear signals and gear angle values ​​of the tested wire-controlled shifter, as well as the various gear angles of the actuator (feedback by the shift actuator through the connecting wiring harness), and the execution time between the various gears of the shift actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0040] Figure 1 It is a structural block diagram of the high and low temperature durability testing equipment of the wire-controlled shifter of the present invention;

[0041] Figure 2 It is a schematic diagram of the structure of the transmission mechanism in the present invention when the locking end plate is not installed;

[0042] Figure 3 is a cross-sectional view of the transmission mechanism of the present invention;

[0043] Figure 4 It is a schematic diagram of the structure of the transmission mechanism of the present invention when the locking end plate is installed;

[0044] Figure 5 It is a structural schematic diagram of the transmission mechanism and the tension and pressure detection mechanism in the present invention;

[0045] Figure 6 It is a bottom view of the transmission mechanism and the tension and pressure detection mechanism of the present invention;

[0046] Figure 7 It is a structural schematic diagram of the universal gear shift drive mechanism of the present invention;

[0047] Figure 8 It is a schematic structural diagram of the universal gear shift drive device of the present invention. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with embodiments:

[0049] Embodiment 1

[0050] like Figure 1 As shown, the present invention discloses a high and low temperature durability testing device for a wire-controlled shifter, which is provided with a host computer, a shift drive device, a fixed tooling and a high and low temperature test box for the shifter with adjustable indoor temperature; the shift drive device and the fixed tooling are both installed in the room of the high and low temperature test box for the shifter, the tested wire-controlled shifter is fixed on the fixed tooling, the host computer is electrically connected to the control end of the shift drive device to control the shift drive device to drive the shift lever of the tested wire-controlled shifter to realize the shifting action of the tested wire-controlled shifter.

[0051] Thus, by setting the indoor temperature of the high and low temperature test box for the gear shifter, and by setting the control method of the upper computer on the gear shift drive device, the shift lever of the tested wire-controlled gear shifter can be made to reciprocate in a set manner, and the tested wire-controlled gear shifter can be made to shift gears reciprocatingly in a set sequence, thereby realizing the durability test of the tested wire-controlled gear shifter under set high and low temperature conditions.

[0052] Among them, the shifting sequence of the tested wire-controlled shifter in the endurance test can be set according to different models of wire-controlled shifters and different endurance test requirements. For example, it can be reciprocated according to P gear-R gear-N gear-D gear-N gear-P gear, or reciprocated according to P gear-D gear-MS gear-P gear, or reciprocated according to D gear-MS gear-M+ gear-M- gear-MS gear-D gear.

[0053] Embodiment 2

[0054] On the basis of the above-mentioned embodiment 1, this embodiment 2 also adopts the following preferred implementation manner:

[0055] The high and low temperature durability test equipment for the wire-controlled shifter is also equipped with a CAN bus analyzer, a shift actuator, a gearbox and an actuator high and low temperature test chamber with adjustable indoor temperature;

[0056] The shift actuator and the gearbox are both placed in the room of the actuator high and low temperature test chamber, the shift actuator is connected to the shift rocker arm of the gearbox, the tested wire-controlled shifter communicates with the shift actuator through a connecting wire harness, so that the control signal sent by the tested wire-controlled shifter when its shift lever performs a shifting action can be sent to the shift actuator through the connecting wire harness, so as to control the shift actuator to drive the gearbox to perform a shifting operation;

[0057] Furthermore, the connecting wire harness is also electrically connected to the host computer via the CAN bus analyzer, so that the host computer can collect the communication signal between the tested wire-controlled shifter and the shift actuator via the CAN bus analyzer.

[0058] Therefore, by setting the indoor temperature of the actuator high and low temperature test box, the shift actuator and the gearbox can be operated under the set high and low temperature conditions to cooperate with the tested wire-controlled shifter for durability testing.

[0059] Furthermore, from the communication signal between the tested wire-controlled shifter and the shift actuator, the host computer can monitor and record the various gear signals and gear angle values ​​of the tested wire-controlled shifter in real time, confirm the changes in the angle values ​​of each gear of the shifter in real time, and ensure the accuracy of the shifting operation; and, by analyzing the changes in the angle values ​​of each gear, provide a basis for evaluating the self-learning function of the wire-controlled shifter; monitor the angle values ​​of each gear of the wire-controlled shifter under different temperature environments, and analyze the influence of temperature on the angle of the Hall sensor of the shifter. The angle values ​​of each gear of the shifter can be used to evaluate the shifting performance of the shifter, and provide data support for optimizing the structural design and control strategy of the wire-controlled shifting system.

[0060] From the communication signal between the tested wire-controlled shifter and the shift actuator, the host computer can also monitor and record in real time the various gear angles of the shift actuator (feedback by the shift actuator through the connecting wiring harness) and the execution time between the various gears of the shift actuator, so as to confirm the actuation performance of the shift actuator in real time and provide a basis for evaluating the control effect of the shifter.

[0061] In addition, the host computer can also compare the gear position signal sent by the host computer to the gear shift drive device with the gear position signal fed back by the gear shift actuator to determine whether they are the same, so as to ensure the accuracy of the gear shifter gear position signal.

[0062] The high and low temperature durability testing equipment for a wire-controlled shifter of the present invention can add visual monitoring and alarm programs to effectively reduce the labor intensity of test personnel.

[0063] Embodiment 3

[0064] Based on the above-mentioned embodiment 1 or embodiment 2, this embodiment 3 also adopts the following preferred implementation manner:

[0065] like Figures 2 to 4 As shown, the tested wire-controlled shifter is a tested push-rod type shifter, and the shift drive device is a universal shift drive device, which is provided with an X-direction drive mechanism, a Y-direction drive mechanism and the universal shift drive mechanism.

[0066] The universal gear shift drive mechanism is provided with a transmission mechanism 10 and a lifting mechanism 20 (wherein the lifting mechanism 20 is Figures 2 to 4 Not shown, see Figure 7 );

[0067] The transmission mechanism 10 comprises a hinge seat 11, a spherical bearing 12, a bearing pressure cover 13, a shift arm 14 and a locking end plate 15; the hinge seat 11 is provided with a mounting through hole 11a, and a lower boss 11-1 is provided at the bottom of the hole wall of the mounting through hole 11a; the spherical bearing 12 is installed in the mounting through hole 11a, so that the outer ring 12-1 of the spherical bearing 12 is seated on the lower boss 11-1; the bearing pressure cover 13 is fixed on the hinge seat 11, so that the bearing pressure cover 13 presses the outer ring 12-1 of the spherical bearing 12 on the lower boss 11-1 to fix the axial positioning of the spherical bearing 12, which can ensure sufficient Sufficient centering accuracy; the upper end of the shift arm 14 is fixedly mounted in the inner ring 12-2 of the spherical bearing 12, and the lower end of the shift arm 14 is used to connect the shift rod of the push rod type shifter under test; the bottom surface of the locking end plate 15 is provided with a groove, and the locking end plate 15 is detachably mounted on the hinge seat 11, and when the locking end plate 15 is mounted on the hinge seat 11, the upper end of the shift arm 14 is embedded in the groove of the locking end plate 15 to fix the shift arm 14 relative to the hinge seat 11, at this time, the outer ring 12-1 and the inner ring 12-2 of the spherical bearing 12 are relatively locked and cannot make angular movement;

[0068] The working angle of the joint bearing 12 is preferably 0° to 20°, which is adapted to the rotation angle of the shift lever of the existing push rod type shifter. The detachable mounting method between the locking end plate 15 and the hinge seat 11 is preferably bolted.

[0069] The lifting mechanism 20 can drive the hinge seat 11 to move up and down in the vertical direction Z, and the axial direction of the mounting through hole 11 a of the hinge seat 11 remains in the vertical direction Z.

[0070] Among them, for the first embodiment, that is, the case where the tension and pressure detection mechanism 30 described in the third embodiment below is not provided, the lifting mechanism 20 can be directly connected to the hinge seat 11 to directly drive the hinge seat 11 to move up and down, or it can be connected to the hinge seat 11 through a certain connecting component to indirectly drive the hinge seat 11 to move up and down.

[0071] The X-direction driving mechanism and the Y-direction driving mechanism can drive the hinge seat 11 to move back and forth in the X-direction and the Y-direction respectively through the lifting mechanism 20, wherein the X-direction and the Y-direction are any two directions perpendicular to each other on a horizontal plane;

[0072] The lower end of the shift arm 14 is fixedly connected to the shift rod of the push rod type shifter under test, and during the durability test of the push rod type shifter under test, the height of the hinge seat 11 in the vertical direction Z is driven by controlling the lifting mechanism 20, so that: the gravity of the hinge seat 11 will not act on the shift arm 14 through the spherical bearing 12.

[0073] The control ends of the X-axis driving mechanism and the Y-axis driving mechanism are the control ends of the gear shift driving device, and the host computer is electrically connected to the control ends of the X-axis driving mechanism and the Y-axis driving mechanism to control the gear shift driving device.

[0074] The working principle of the above-mentioned universal gear shift drive device is as follows:

[0075] For the tested push rod type shifter whose shift rod performs rotational motion, the shift rod is fixedly connected to the lower end of the shift arm 14, and it is ensured that the X direction is perpendicular to the rotation axis of the shift rod of the tested push rod type shifter that performs rotational motion, and the locking end plate 15 is removed from the hinge seat 11 so that the shift arm 14 can swing relative to the hinge seat 11 through the joint bearing 12; thus, when the X-direction driving mechanism drives the hinge seat 11 to move back and forth in the X direction through the lifting mechanism 20, the hinge seat 11 generates a push-pull force in the X direction on the upper end of the shift arm 14 through the joint bearing 12, so that the shift arm 14 and the shift rod of the tested push rod type shifter rotate together around the X direction. The rotating axis makes a rotational motion; therefore, by controlling the stroke of the hinge seat 11 to move back and forth in the X direction by the X-direction driving mechanism, the shift lever of the tested push-rod type shifter can be controlled to rotate to a corresponding angle to achieve shifting, and, in this process, by controlling the height of the hinge seat 11 to be lifted and lowered in the vertical direction Z by the lifting mechanism 20, the gravity of the hinge seat 11 will not act on the shift arm 14 through the spherical bearing 12, simulating the force state of the shift lever when being operated by the driver (i.e., only being subjected to the push-pull force in the X direction). Therefore, the present invention can be used to drive the shift lever of the push-rod type shifter to make a rotational motion for shifting for durability testing, and can simulate the working condition of the shift lever when being operated by the driver.

[0076] For the tested push rod type shifter whose shift rod performs linear or zigzag motion, the shift rod is fixedly connected to the lower end of the shift arm 14, and it is ensured that the X direction and the Y direction are respectively parallel to the linear motion direction of the shift rod of the tested push rod type shifter, and the locking end plate 15 is installed on the hinge seat 11, so that the shift arm 14 and the hinge seat 11 are relatively fixed and cannot swing relative to each other. At this time, the outer ring 12-1 and the inner ring 12-2 of the spherical bearing 12 are relatively locked and cannot perform angular motion. Thus, when the X-direction driving mechanism drives the hinge seat 11 to move back and forth in the X-direction through the lifting mechanism 20, the hinge seat 11 generates a push-pull force in the X-direction on the upper end of the shift arm 14 through the joint bearing 12, so that the shift arm 14 and the shift rod of the push rod type shifter under test move back and forth in the X-direction together. When the Y-direction driving mechanism drives the hinge seat 11 to move back and forth in the Y-direction through the lifting mechanism 20, the hinge seat 11 generates a push-pull force in the X-direction through the joint bearing 12. The spherical bearing 12 generates a push-pull force in the Y direction on the upper end of the shift arm 14, so that the shift arm 14 and the shift rod of the tested push rod type shifter move back and forth in the Y direction together; therefore, by controlling the stroke of the hinge seat 11 to move back and forth in the X direction and the Y direction respectively driven by the X-direction driving mechanism and the Y-direction driving mechanism, the shift rod of the tested push rod type shifter can be controlled to move a corresponding distance in the X direction and the Y direction respectively to achieve shifting, and, in this process, by controlling the height of the hinge seat 11 to be lifted and lowered in the vertical direction Z by the lifting mechanism 20, the gravity of the hinge seat 11 will not act on the shift arm 14 through the spherical bearing 12, simulating the force state of the shift rod when being operated by the driver (that is, only being subjected to the push-pull force in the X direction and the Y direction). Therefore, the present invention can be used to drive the shift rod of the push rod type shifter to shift gears in a straight line or a broken line for durability testing, and can simulate the working condition of the shift rod when being operated by the driver.

[0077] Among them, the above ensures that the X direction and Y direction are respectively parallel to the linear motion direction of the shift rod of the tested push rod type shifter. For example: for a traditional in-line automatic shifter, the linear motion of the driving mechanism in the X direction can realize the shifting between the P, R, N, and D gears. For a zigzag manual shifter, the driving mechanism reciprocates linearly in the X and Y directions to realize the switching back and forth between the R gear, the N gear, and each forward gear. For a manual-automatic shifter, the linear motion of the driving mechanism in the Y direction drives the push rod of the shifter to switch from the D gear to the M gear, and the linear motion of the driving mechanism in the X direction drives the push rod of the shifter to shift between the M+ and M- gears.

[0078] It should be noted that the push rod type shifter applicable to the present invention refers to a shifter in which the driver shifts gears by pushing and pulling the shift lever, and the principle of the shifter to achieve gear shifting is not limited. Therefore, the push rod type shifter can be an electronic push rod type shifter, a traditional automatic shifter, a manual shifter, a manual-automatic shifter and other push rod type shifters.

[0079] In summary, when the locking end plate 15 is not installed, the present invention can drive the shift rod of the push rod type shifter to reciprocate and rotate, and realize the endurance test of the push rod type shifter of this type with the shift rod rotating to perform reciprocating cyclic switching at different gears; when the locking end plate 15 is installed, the shift rod of the push rod type shifter can be driven to reciprocate and linearly move in the X direction and the Y direction respectively, and realize the endurance test of the push rod type shifter of this type with the shift rod moving linearly or in a broken line to perform reciprocating cyclic switching at different gears; therefore, the present invention has the advantage of strong versatility, can save equipment costs, and reduce tooling switching time and man-hours when performing endurance tests on different types of push rod type shifters;

[0080] Furthermore, the present invention can simulate the working condition of the shift lever when being operated by the driver by cooperating with the control of the lifting mechanism 20 .

[0081] Embodiment 4

[0082] On the basis of the above-mentioned embodiment 3, this embodiment 4 also adopts the following preferred implementation manner:

[0083] The mounting through hole 11a of the hinge seat 11 is a two-stage stepped hole consisting of a large-diameter hole and a small-diameter hole, and the large-diameter hole is located above the small-diameter hole, and the spherical bearing 12 is installed in the small-diameter hole of the mounting through hole 11a; the bearing pressure cover 13 is composed of a cover plate portion 13-1 and a tube body portion 13-2 connected to the bottom surface of the cover plate portion 13-1, and the cover plate portion 13-1 and the tube body portion 13-2 of the bearing pressure cover 13 are respectively located on the bottom surface of the large-diameter hole and the top surface of the outer ring 12-1, and the cover plate portion 13-1 is connected and fixed to the hinge seat 11 by bolts, so that the tube body portion 13-2 presses the outer ring 12-1 of the spherical bearing 12 onto the lower boss 11-1.

[0084] Embodiment 5

[0085] On the basis of the above-mentioned Embodiment 3 or Embodiment 4, this Embodiment 5 also adopts the following preferred implementation manner:

[0086] like Figure 5 and Figure 6 As shown, the universal shift drive mechanism is further provided with a pulling pressure detection mechanism 30, and the pulling pressure detection mechanism 30 comprises an outer frame 31, an inner frame 32, an X-direction pulling pressure sensor 33 and a Y-direction pulling pressure sensor 34;

[0087] The inner frame 32 is located in the inner space of the outer frame 31, and the inner frame 32 and the outer frame 31 are connected by an X guide rod 35, so that the inner frame 32 can slide relative to the outer frame 31 along the X direction; the hinge seat 11 is located in the inner space of the inner frame 32, and the hinge seat 11 and the inner frame 32 are connected by a Y guide rod 36, so that the hinge seat 11 can slide relative to the inner frame 32 along the Y direction;

[0088] The shell of the X-direction tension pressure sensor 33 is fixed to the outer frame 31 through an X-direction mounting bracket 37, the force-bearing end of the X-direction tension pressure sensor 33 is fixedly connected to the inner frame 32 through an X-direction connecting rod 38, and the force-bearing end of the X-direction tension pressure sensor 33 is telescopic along the X-direction; the shell of the Y-direction tension pressure sensor 34 is fixed to the inner frame 32 through a Y-direction mounting bracket 39, the force-bearing end of the Y-direction tension pressure sensor 34 is fixedly connected to the hinge seat 11 through a Y-direction connecting rod 310, and the force-bearing end of the Y-direction tension pressure sensor 34 is telescopic along the Y-direction;

[0089] The lifting mechanism 20 directly drives the outer frame 31 to move up and down in the vertical direction Z, so as to indirectly drive the hinge seat 11 to move up and down in the vertical direction Z through the tension and pressure detection mechanism 30 .

[0090] Thus, during the durability test of the push-rod type shifter, the X-direction driving mechanism and the Y-direction driving mechanism drive the hinge seat 11 to move back and forth in the X-direction and the Y-direction respectively through the lifting mechanism 20 and the pulling and pressure detecting mechanism 30 in turn, so that the X-direction pulling and pressure sensor 33 and the Y-direction pulling and pressure sensor 34 can detect in real time the X-direction and Y-direction pushing and pulling forces respectively generated by the hinge seat 11 on the upper end of the shift arm 14 through the joint bearing 12, thereby realizing real-time monitoring of the shifting force values ​​of the tested push-rod type shifter in the X-direction and the Y-direction during the shifting process.

[0091] The preferred measuring ranges of the X-axis tension pressure sensor 33 and the Y-axis tension pressure sensor 34 are both 0 to 500N.

[0092] Among them, preferably: the inner frame 32 and the outer frame 31 are connected by two X-guide rods 35, and the two X-guide rods 35 are respectively located on both sides of the X-direction connecting rod 38; the hinge seat 11 and the inner frame 32 are connected by two Y-guide rods 36, and the two Y-guide rods 36 are respectively located on both sides of the Y-direction connecting rod 310.

[0093] Among them, preferably: the X-direction mounting bracket 37 is composed of two X-direction pillars 371 and an X-direction pressure plate 372 fixed between the outer ends of the two X-direction pillars 371, the inner ends of the two X-direction pillars 371 are fixed on the outer frame 31, the X-direction tension pressure sensor 33 is located between the two X-direction pillars 371, and the housing of the X-direction tension pressure sensor 33 is fixed on the X-direction pressure plate 372;

[0094] The Y-axis mounting bracket 39 is composed of two Y-axis pillars 391 and a Y-axis pressure plate 392 fixed between the outer ends of the two Y-axis pillars 391, the inner ends of the two Y-axis pillars 391 are fixed on the inner frame 32, the Y-axis tensile pressure sensor 34 is located between the two Y-axis pillars 391, and the shell of the Y-axis tensile pressure sensor 34 is fixed on the Y-axis pressure plate 392.

[0095] Among them, preferably: the tension and pressure detection mechanism 30 also includes an X-direction detection connecting rod 311 and a Y-direction detection connecting rod 312; the X-direction detection connecting rod 311 is fixed on the inner frame 32 and passes through the through hole provided on the outer frame 31 to the outside of the outer frame 31, and the X-direction detection connecting rod 311 is coaxial with the X-direction connecting rod 38; the Y-direction detection connecting rod 312 is fixed on the hinge seat 11 and passes through the through hole provided on the inner frame 32 to the outside of the inner frame 32, and the Y-direction detection connecting rod 312 is coaxial with the Y-direction connecting rod 310. Therefore, the X-direction detection connecting rod 311 and the Y-direction detection connecting rod 312 can be connected to the X-direction tension and pressure sensor 33 and the Y-direction tension and pressure sensor 34 respectively by using a handheld thrust gauge.

[0096] Embodiment 6

[0097] On the basis of the above-mentioned embodiment 5, this embodiment 6 also adopts the following preferred implementation manner:

[0098] like Figure 7 As shown, the lifting mechanism 20 is provided with a fixed plate 21, a lifting cylinder 22 and a guide assembly 23, the fixed plate 21 is located above the outer frame 31, the cylinder body of the lifting cylinder 22 is fixed on the fixed plate 21, the piston rod of the lifting cylinder 22 is fixedly connected to the outer frame 31 through a connecting piece 24, and the guide assembly 23 is installed between the fixed plate 21 and the outer frame 31, wherein the piston rod of the lifting cylinder 22 is telescoped in the vertical direction Z, and the guide assembly 23 is used to guide the outer frame 31 to move up and down in the vertical direction Z relative to the fixed plate 21.

[0099] Preferably, the guide assembly 23 is composed of a guide sleeve and a guide rod slidably installed in the guide sleeve.

[0100] Among them, preferably: the outer frame 31 is a rectangular frame, the lifting mechanism 20 is provided with two lifting cylinders 22 and four guide assemblies 23, the two lifting cylinders 22 are respectively arranged on two opposite frame edges of the rectangular frame, and the four guide assemblies 23 are respectively arranged at the four corners of the rectangular frame.

[0101] Embodiment 7

[0102] Based on any one of the above-mentioned embodiments 3 to 6, this embodiment 7 also adopts the following preferred implementation modes:

[0103] The universal gear shift drive device is also provided with a Z-direction drive mechanism, the lifting mechanism is installed on the X-direction drive mechanism, the X-direction drive mechanism is installed on the Y-direction drive mechanism, and the Y-direction drive mechanism is installed on the Z-direction drive mechanism, so that the Z-direction drive mechanism can drive the X-direction drive mechanism, the Y-direction drive mechanism and the lifting mechanism to move up and down in the Z direction. The height of the universal gear shift drive device is suitable for testing different models of gear shifter products.

[0104] Embodiment 8

[0105] Based on any one of the above-mentioned embodiments 3 to 7, this embodiment 8 also adopts the following preferred implementation modes:

[0106] like Figure 8 As shown, the universal gear shift drive device is provided with a plurality of the universal gear shift drive mechanisms; the lifting mechanisms 20 of the respective universal gear shift drive mechanisms are fixed, and the X-direction drive mechanism and the Y-direction drive mechanism synchronously drive the hinge seats 11 of the respective universal gear shift drive mechanisms to move back and forth in the X-direction and the Y-direction respectively through the fixed lifting mechanisms 20, so as to perform durability tests on a plurality of push rod type gear shifters of the same model at the same time.

[0107] Embodiment 9

[0108] Based on any one of the above embodiments 1 to 8, this embodiment 9 also adopts the following preferred implementation modes:

[0109] The fixing fixture is installed in the room of the high and low temperature test box of the gear shifter through a height adjustment mechanism to adapt to the high and low temperature durability test of gear shifter products of different models.

[0110] Embodiment 10

[0111] Based on any one of the above-mentioned embodiments 2 to 9, this embodiment 10 also adopts the following preferred implementation modes:

[0112] The shifter high and low temperature test chamber and the actuator high and low temperature test chamber are both equipped with lighting devices to facilitate observation of the test sample status.

[0113] The present invention is not limited to the above-mentioned specific implementation modes. According to the above-mentioned contents, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the present invention, the present invention can also make other various forms of equivalent modifications, replacements or changes, all of which fall within the protection scope of the present invention.

Claims

1. A high and low temperature durability test equipment for a wire-controlled shifter, characterized in that: The high and low temperature durability test equipment for the wire-controlled shifter is provided with a host computer, a shift drive device, a fixed tooling and a high and low temperature test chamber for the shifter with adjustable indoor temperature; the shift drive device and the fixed tooling are both installed in the room of the high and low temperature test chamber for the shifter, the tested wire-controlled shifter is fixed on the fixed tooling, the host computer is electrically connected to the control end of the shift drive device to control the shift drive device to drive the shift lever of the tested wire-controlled shifter; The tested wire-controlled shifter is a tested push-rod type shifter, and the shift drive device is a universal shift drive device, which is provided with an X-direction drive mechanism, a Y-direction drive mechanism and a universal shift drive mechanism; The universal gear shift drive mechanism is provided with a transmission mechanism (10) and a lifting mechanism (20); The transmission mechanism (10) comprises a hinge seat (11), a spherical bearing (12), a bearing cover (13), a shift arm (14) and a locking end plate (15); the hinge seat (11) is provided with a mounting through hole (11a), and a lower boss (11-1) is provided at the bottom of the hole wall of the mounting through hole (11a); the spherical bearing (12) is installed in the mounting through hole (11a), so that the outer ring (12-1) of the spherical bearing (12) is seated on the lower boss (11-1); the bearing cover (13) is fixed on the hinge seat (11), so that the bearing cover (13) holds the outer ring (12-1) of the spherical bearing (12) in place. The upper end of the shift arm (14) is fixedly mounted in the inner ring (12-2) of the spherical bearing (12), and the lower end of the shift arm (14) is used to connect the shift rod of the push rod type shifter under test; the bottom surface of the locking end plate (15) is provided with a groove, and the locking end plate (15) is detachably mounted on the hinge seat (11), and when the locking end plate (15) is mounted on the hinge seat (11), the upper end of the shift arm (14) is embedded in the groove of the locking end plate (15) to fix the shift arm (14) relative to the hinge seat (11); The lifting mechanism (20) can drive the hinge seat (11) to move up and down in the vertical direction (Z), and the axial direction of the mounting through hole (11a) of the hinge seat (11) is kept in the vertical direction (Z); The X-direction driving mechanism and the Y-direction driving mechanism can drive the hinge seat (11) to move back and forth in the X-direction and the Y-direction respectively through the lifting mechanism (20), wherein the X-direction and the Y-direction are any two directions perpendicular to each other on a horizontal plane; The lower end of the shift arm (14) is fixedly connected to the shift rod of the push rod type shifter under test, and during the durability test of the push rod type shifter under test, the height of the hinge seat (11) driven to rise and fall in the vertical direction (Z) by controlling the lifting mechanism (20) so that: the gravity of the hinge seat (11) does not act on the shift arm (14) through the joint bearing (12); The universal gear shift drive mechanism is also provided with a pulling pressure detection mechanism (30), which comprises an outer frame (31), an inner frame (32), an X-direction pulling pressure sensor (33) and a Y-direction pulling pressure sensor (34); The inner frame (32) is located in the inner space of the outer frame (31), and the inner frame (32) and the outer frame (31) are connected via an X-guide rod (35), so that the inner frame (32) can slide along the X direction relative to the outer frame (31); the hinge seat (11) is located in the inner space of the inner frame (32), and the hinge seat (11) and the inner frame (32) are connected via a Y-guide rod (36), so that the hinge seat (11) can slide along the Y direction relative to the inner frame (32); The shell of the X-direction tension pressure sensor (33) is fixed to the outer frame (31) via an X-direction mounting bracket (37), the force-bearing end of the X-direction tension pressure sensor (33) is fixedly connected to the inner frame (32) via an X-direction connecting rod (38), and the force-bearing end of the X-direction tension pressure sensor (33) is telescopic along the X-direction; the shell of the Y-direction tension pressure sensor (34) is fixed to the inner frame (32) via a Y-direction mounting bracket (39), the force-bearing end of the Y-direction tension pressure sensor (34) is fixedly connected to the hinge seat (11) via a Y-direction connecting rod (310), and the force-bearing end of the Y-direction tension pressure sensor (34) is telescopic along the Y-direction; The lifting mechanism (20) directly drives the outer frame (31) to move up and down in the vertical direction (Z), so as to indirectly drive the hinge seat (11) to move up and down in the vertical direction (Z) through the tension and pressure detection mechanism (30); The inner frame (32) and the outer frame (31) are connected via two X-guide rods (35), and the two X-guide rods (35) are respectively located on both sides of the X-direction connecting rod (38); the hinge seat (11) and the inner frame (32) are connected via two Y-guide rods (36), and the two Y-guide rods (36) are respectively located on both sides of the Y-direction connecting rod (310); The X-direction mounting bracket (37) is composed of two X-direction pillars (371) and an X-direction pressure plate (372) fixed between the outer ends of the two X-direction pillars (371), the inner ends of the two X-direction pillars (371) are fixed on the outer frame (31), the X-direction tension and pressure sensor (33) is located between the two X-direction pillars (371), and the housing of the X-direction tension and pressure sensor (33) is fixed on the X-direction pressure plate (372); The Y-axis mounting bracket (39) is composed of two Y-axis pillars (391) and a Y-axis pressure plate (392) fixed between the outer ends of the two Y-axis pillars (391), the inner ends of the two Y-axis pillars (391) are fixed on the inner frame (32), the Y-axis tensile pressure sensor (34) is located between the two Y-axis pillars (391), and the shell of the Y-axis tensile pressure sensor (34) is fixed on the Y-axis pressure plate (392).

2. The high and low temperature durability testing equipment for a wire-controlled shifter according to claim 1, characterized in that: The high and low temperature durability test equipment for the wire-controlled shifter is also equipped with a CAN bus analyzer, a shift actuator, a gearbox and an actuator high and low temperature test chamber with adjustable indoor temperature; The shift actuator and the gearbox are both placed in the room of the actuator high and low temperature test chamber, the shift actuator is connected to the shift rocker arm of the gearbox, the tested wire-controlled shifter communicates with the shift actuator through a connecting wire harness, so that the control signal sent by the tested wire-controlled shifter when its shift lever performs a shifting action can be sent to the shift actuator through the connecting wire harness, so as to control the shift actuator to drive the gearbox to perform a shifting operation; Furthermore, the connecting wire harness is also electrically connected to the host computer via the CAN bus analyzer, so that the host computer can collect the communication signal between the tested wire-controlled shifter and the shift actuator via the CAN bus analyzer.

3. The high and low temperature durability testing equipment for a wire-controlled shifter according to claim 1, characterized in that: The mounting through hole (11a) of the hinge seat (11) is a two-stage stepped hole consisting of a large-diameter hole and a small-diameter hole, and the large-diameter hole is located above the small-diameter hole, and the spherical bearing (12) is installed in the small-diameter hole of the mounting through hole (11a); the bearing pressure cover (13) is composed of a cover plate portion (13-1) and a tube body portion (13-2) connected to the bottom surface of the cover plate portion (13-1), and the cover plate portion (13-1) and the tube body portion (13-2) of the bearing pressure cover (13) are respectively located on the bottom surface of the large-diameter hole and the top surface of the outer ring (12-1), and the cover plate portion (13-1) is connected and fixed to the hinge seat (11) by bolts, so that the tube body portion (13-2) presses the outer ring (12-1) of the spherical bearing (12) onto the lower boss (11-1).

4. The high and low temperature durability testing equipment for a wire-controlled shifter according to claim 1, characterized in that: The tension and pressure detection mechanism (30) also includes an X-direction detection connecting rod (311) and a Y-direction detection connecting rod (312); the X-direction detection connecting rod (311) is fixed on the inner frame (32) and passes through a through hole provided on the outer frame (31) to the outside of the outer frame (31), and the X-direction detection connecting rod (311) is coaxial with the X-direction connecting rod (38); the Y-direction detection connecting rod (312) is fixed on the hinge seat (11) and passes through a through hole provided on the inner frame (32) to the outside of the inner frame (32), and the Y-direction detection connecting rod (312) is coaxial with the Y-direction connecting rod (310).

5. The high and low temperature durability testing equipment for a wire-controlled shifter according to claim 1, characterized in that: The lifting mechanism (20) is provided with a fixed plate (21), a lifting cylinder (22) and a guide assembly (23); the fixed plate (21) is located above the outer frame (31); the cylinder body of the lifting cylinder (22) is fixed on the fixed plate (21); the piston rod of the lifting cylinder (22) is fixedly connected to the outer frame (31) via a connecting piece (24); the guide assembly (23) is installed between the fixed plate (21) and the outer frame (31); the piston rod of the lifting cylinder (22) is telescopic in a vertical direction (Z); and the guide assembly (23) is used to guide the outer frame (31) to move up and down relative to the fixed plate (21) in a vertical direction (Z).

6. The high and low temperature durability testing equipment for a wire-controlled shifter according to claim 5, characterized in that: The outer frame (31) is a rectangular frame, and the lifting mechanism (20) is provided with two lifting cylinders (22) and four guide assemblies (23), the two lifting cylinders (22) are respectively arranged on two opposite frame edges of the rectangular frame, and the four guide assemblies (23) are respectively arranged at four corners of the rectangular frame.

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