A fatigue test device for an electronically controlled gear selection and shifting actuator

Abstract

The utility model relates to a fatigue test device, and specifically to an electrically controlled gear selection and shifting actuator fatigue test device. The device includes a mounting frame, a gear shift shaft, two gear shifting load mounting blocks, two sets of elastic self-locking pins, and a gear shifting head fixture and a gear selection guide sleeve fixing fixture; the mounting frame is used to connect and support an external test device; the electrically controlled gear selection and shifting actuator to be tested can be detachably mounted on the mounting frame. The fatigue test device of the utility model has a streamlined structure and does not need to match the transmission to perform gear selection and shifting fatigue tests on the test bench. Therefore, it is simple and flexible to implement, occupies less resources, has high reliability and efficiency, and has a wide range of application scenarios.

Description

Technical Field

[0001] The utility model relates to a fatigue testing device, in particular to an electric control type gear selection and shifting actuator fatigue testing device. Background Art

[0002] The electronically controlled shift selector actuator (SSA for short) is usually used in conjunction with an electronically controlled mechanical automatic transmission (AMT). It is a commonly used combination structure. During the early design and development of the electronically controlled shift selector actuator, it is usually necessary to perform fatigue tests on the electronically controlled shift selector actuator to provide direction for design and development and to ensure product quality.

[0003] In the prior art, when performing fatigue tests on electronically controlled shift actuators, it is usually necessary to assemble them together with electronically controlled mechanical automatic transmissions, and then install the two on a test device for fatigue testing. However, due to the large size and weight of electronically controlled mechanical automatic transmissions and the complexity of installation, the efficiency of fatigue testing is low.

[0004] Chinese patent CN204286783U discloses a load device for a simulated real vehicle assembly endurance fatigue test of a gear selection and shifting push-pull wire, which is provided with a base, a loading movable rod and a guide device; one end of the loading movable rod is connected to the base through a pin and a rolling bearing a, and the other end of the loading movable rod is equipped with a rolling bearing b, and the loading movable rod is provided with a specimen load end mounting hole. However, the device does not solve the above technical problems, so it is necessary to design a set of fatigue test devices for electronically controlled gear selection and shifting actuators for rapid and effective product development verification. Utility Model Content

[0005] The purpose of the utility model is to solve the technical problem that in the prior art, when performing fatigue tests on electronically controlled gear selection and shift actuators, the fatigue test efficiency is low due to the large size and weight of electronically controlled mechanical automatic transmissions and the complex installation, and to provide a fatigue test device for electronically controlled gear selection and shift actuators.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An electric control type gear selection and shifting actuator fatigue test device, which is special in that:

[0008] It includes a mounting frame, a shift shaft, two shift load mounting blocks, two sets of elastic self-locking pins, and a shift head fixture and a gear selection guide sleeve fixing fixture;

[0009] The mounting frame is used to connect and support the external test device;

[0010] The shift shaft is arranged along the length direction of the mounting frame, and two shift load mounting blocks are respectively slidably mounted on both ends of the shift shaft and are respectively fixedly mounted on the bottom surface of the mounting frame;

[0011] A plurality of annular grooves are arranged on the circumference of both ends of the shift shaft, and the plurality of annular grooves are evenly distributed along the axial direction of the shift shaft, and a gap is arranged between two adjacent annular grooves;

[0012] The number of each set of elastic self-locking pins is at least one, and the two sets of elastic self-locking pins are respectively mounted on two shift load mounting blocks, and their elastic ends abut against the annular groove to form an elastic engaging structure for providing shift damping when the shift shaft moves along its axial direction for shifting;

[0013] The shift head tooling is fixedly installed on the shift shaft, the gear selection guide sleeve fixing tooling is fixedly installed on the mounting frame, and the axes of the shift head tooling and the gear selection guide sleeve fixing tooling are both located on the same radial section of the shift shaft;

[0014] A guide is provided on the bottom surface of the mounting frame, and the lower side of the shift head tooling is slidably connected to the guide, and the sliding direction is arranged along the axial direction of the shift shaft; a shift groove corresponding to the shift head on the shift lever of the electronically controlled shift actuator to be tested is arranged on the upper side of the shift head tooling, and the length direction of the shift groove is arranged along the width direction of the mounting frame;

[0015] The electronically controlled gear selection and shift actuator to be tested can be detachably mounted on the mounting frame, and the electronically controlled gear selection and shift actuator and the gear selection guide sleeve fixing fixture are respectively located on both sides of the gear shift shaft along the width direction of the mounting frame; the end of the gear selection and shift rod in the electronically controlled gear selection and shift actuator is connected to the gear selection guide sleeve fixture, which is used to position and support the gear selection and shift rod through the gear selection guide sleeve fixture; the shift head on the gear selection and shift rod is connected to the shift slot of the shift head fixture, which is used to drive the shift head to move along the shift slot to achieve gear selection, or to drive the shift shaft to move along its axial direction through the shift head fixture to achieve gear shifting.

[0016] Further, the mounting frame includes a first side plate, a second side plate and a bottom plate;

[0017] The first side plate and the second side plate are relatively mounted on the upper side of the bottom plate at the edge along the length direction thereof;

[0018] The gear selection guide sleeve fixing tool is fixedly installed on the inner wall of the first side plate, the electric control gear selection and shifting actuator to be tested is detachably installed on the outer wall of the second side plate, and the end of the gear selection and shifting rod passes through the second side plate along the width direction of the bottom plate and is connected to the gear selection guide sleeve fixing tool;

[0019] The shift load mounting block is mounted on the upper side of the base plate, and the guide member is arranged on the base plate.

[0020] Further, the mounting frame also includes a plurality of connecting rods;

[0021] The plurality of connecting rods are arranged along the width direction of the bottom plate, and the two ends of the connecting rods are respectively installed on the side where the first side plate and the second side plate are close to each other.

[0022] Furthermore, the number of the connecting rods is two, and the two connecting rods are symmetrically arranged along the length direction of the bottom plate; and the guide member is a guide groove.

[0023] Furthermore, the shift head tooling includes a shift block and a guide block; the shift groove is arranged on the upper side of the shift block, and the shift block is sleeved on the shift shaft; the upper end of the guide block is connected to the lower side of the shift block, and the lower end is slidably connected in the guide groove.

[0024] Furthermore, the gear selection guide sleeve fixing tool is a fixing block; one side of the fixing block is fixedly mounted on the mounting frame, and the other side is provided with a guide hole adapted to the end of the gear selection lever, and the end of the gear selection lever is connected to the guide hole.

[0025] Furthermore, a plurality of connecting screw holes are provided on the bottom surface of the mounting frame, which are used to connect the mounting frame to an external test device through the connecting screw holes and corresponding bolts. Application scenarios of the test device include high and low temperature chambers or vibration test benches, etc.

[0026] The beneficial effects of the utility model are:

[0027] 1. The fatigue test device of the utility model has a simple structure and does not need to be matched with a transmission to perform a gear selection and shifting fatigue test on a test bench. Therefore, the implementation is simple and flexible, occupies less resources, and has high reliability and efficiency, and has a wide range of application scenarios.

[0028] 2. The fatigue test device of the utility model has a small overall size and flexible layout, and can be placed in a space of limited size such as a high and low temperature box or a vibration test bench, so as to facilitate verification of the performance of the electronically controlled shift actuator under different conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an electronically controlled gear selection and shifting actuator;

[0030] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0031] Figure 3 yes Figure 2 A top view of

[0032] Figure 4 yes Figure 2 Bottom view of

[0033] Figure 5 The utility model is a schematic diagram of the installation structure of the shift shaft, the shift head tooling and the elastic self-locking pin in the embodiment of the utility model.

[0034] In the figure:

[0035] 01-electrically controlled gear selection and shift actuator, 02-gear selection and shift lever, 03-shift head;

[0036] 1-shift shaft, 2-mounting frame, 21-first side plate, 22-second side plate, 23-bottom plate, 24-connecting rod; 3-shift load mounting block, 4-elastic self-locking pin, 5-shift head tooling, 51-shift block, 52-guide block; 6-shift guide sleeve fixing tooling, 7-annular groove, 8-guide groove, 9-shift groove, 10-connecting screw hole. DETAILED DESCRIPTION

[0037] In order to make the purpose, advantages and features of the utility model clearer, the following is a further detailed description of an electric control type gear selection and shifting actuator fatigue test device proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following specific implementation methods, the advantages and features of the utility model will be clearer.

[0038] See also Figure 2-Figure 5 The present embodiment is a fatigue test device for an electronically controlled gear selection and shifting actuator, which mainly includes a gear shift shaft 1, a mounting frame 2, two gear shift load mounting blocks 3, two sets of elastic self-locking pins 4, a gear shift head tooling 5 and a gear selection guide sleeve fixing tooling 6.

[0039] The main function of the mounting frame 2 is to provide a mounting position for related components, and specifically includes a first side plate 21 , a second side plate 22 , a bottom plate 23 and a plurality of connecting rods 24 .

[0040] The first side panel 21, the second side panel 22 and the bottom panel 23 are all rectangular panels, and the first side panel 21 and the second side panel 22 are relatively installed on the upper side of the bottom panel 23 at the edge along its length direction; the main function of the connecting rod 24 is to further enhance the stability between the first side panel 21 and the second side panel 22, and there is no specific requirement for its number. In this embodiment, two connecting plates are provided as an example, and the two connecting rods 24 are respectively arranged between the first side panel 21 and the second side panel 22, and their two ends are respectively connected to the side of the first side panel 21 and the second side panel 22 close to each other, and the two connecting rods 24 are both located at a position away from the bottom panel 23 on the side of the first side panel 21 and the side panel close to each other. At the same time, the two connecting rods 24 are symmetrically arranged along the length direction of the bottom panel 23, thereby providing effective support for the first side panel 21 and the second side panel 22.

[0041] When in use, it is necessary to connect and support an external test device through the mounting frame 2. The application scenarios of the test device include high and low temperature boxes, vibration test benches or other test benches. A plurality of connecting screw holes 10 are provided on the base plate 23, so as to facilitate connecting the base plate 23 with other test devices by bolts.

[0042] The shift shaft 1 is disposed between the first side plate 21 and the second side plate 22 along the length direction of the bottom plate 23, and its length is less than the length of the bottom plate 23. Two shift load mounting blocks 3 are respectively slidably mounted on both ends of the shift shaft 1, so that the shift shaft 1 can be displaced along its axial direction during shifting, and the two shift load mounting blocks 3 are respectively mounted on the bottom plate 23 by bolts, and at the same time, the axis of the shift shaft 1 and the center line of the bottom plate 23 in the width direction are parallel to each other.

[0043] Preferably, in order to simulate the damping during gear shifting and be closer to the actual gear shifting condition, a group of elastic self-locking pins 4 are respectively provided on the two gear shifting load mounting blocks 3, and the number of each group of elastic self-locking pins 4 is at least one. Specifically, in this embodiment, the number of each group of elastic self-locking pins 4 is one. A plurality of annular grooves 7 are respectively provided at both ends of the gear shifting shaft 1, and the number of annular grooves 7 can be set according to the number of specific gear positions. In this embodiment, three are used as an example, and a gap is provided between two adjacent annular grooves 7. The elastic end of the elastic self-locking pin 4 abuts against the annular groove 7 to form an elastic engagement structure. When shifting, when the gear shifting shaft 1 is displaced by force, the elastic end of the elastic self-locking pin 4 is squeezed, so that the elastic self-locking pin 4 contracts, and thus moves from one annular groove 7 to another annular groove 7, thereby realizing the real simulation of gear shifting damping.

[0044] In actual use, the required gear-engaging force is calculated according to the gear-engaging current and voltage received by the vehicle when it is in different gears, and the number and depth of the elastic self-locking pins 4 installed are adjusted accordingly.

[0045] The shift head fixture 5 is fixedly installed on the shift shaft 1. Specifically, the shift head fixture 5 in this embodiment is composed of a shift block 51 and a guide block 52. A shift groove 9 is provided on the upper side of the shift block 51. The shift block 51 is mounted on the shift shaft 1 and fixed by bolts, and is located on the axial center line of the shift shaft 1. The upper end of the guide block 52 is connected to the lower side of the shift block 51. In order to enable the shift shaft 1 to stably displace along its axial direction, a guide groove 8 is provided on the lower side of the bottom plate 23 at a position corresponding to the guide block 52. The lower end of the guide block 52 is slidably connected to the guide groove 8. The guide groove 8 is provided along the axial direction of the shift shaft 1, and its length meets the shifting requirements of the shift shaft 1. Of course, the above-mentioned guide groove 8 can also be other types of guide members, such as guide rails.

[0046] The gear selection guide sleeve fixing tool 6 is fixedly installed on the inner wall of the first side plate 21. The gear selection guide sleeve fixing tool 6 in the present embodiment is specifically a fixing block; one side of the fixing block is fixedly installed on the inner wall of the first side plate 21 by bolts, and the other side is provided with a guide hole adapted to the end of the gear selection rod 02 in the electrically controlled gear selection actuator 01 to be tested. During the test, it can provide support and guiding function for the gear selection rod 02, and its length meets the displacement requirements of the gear selection rod 02 when selecting gears.

[0047] A mounting hole is provided on the second side plate 22, and the mounting hole is coaxially arranged with the guide hole of the fixing block; Figure 1 The electronically controlled shift actuator 01 to be tested is mounted on the outer wall of the second side plate 22 by bolts, so that the end of the shift lever 02 passes through the second side plate 22 along the width direction of the bottom plate 23 and is connected to the guide hole of the fixed block, and the shift head 03 on the shift lever 02 is located in the shift slot 9.

[0048] When selecting a gear, the gear selection motor of the electronically controlled gear selection and shifting actuator 01 drives the gear selection and shifting rod 02 to move along its axial direction, so that the shift head 03 slides along the shifting slot 9 to achieve gear selection. When shifting gears, the shifting motor of the electronically controlled gear selection and shifting actuator 01 drives the gear selection and shifting shaft 1 to rotate to shift gears. During this process, the shifting head 03 applies a certain driving force to the shifting slot 9, so that the shifting head 03 drives the shifting block 51 to move axially, thereby driving the shifting shaft 1 to move axially through the shifting block 51, so that the elastic self-locking pin 4 moves from the initial annular groove 7 to the next annular groove 7, and finally achieves gear shifting. When selecting and shifting gears as described above, the entire device can be placed in a high and low temperature box or a vibration test bench for fatigue testing.

Claims

1. An electronically controlled gear selection and shifting actuator fatigue test device, characterized in that: It comprises a mounting frame (2), a shift shaft (1), two shift load mounting blocks (3), two sets of elastic self-locking pins (4), a shift head tooling (5) and a shift guide sleeve fixing tooling (6); The mounting frame (2) is used to connect and support an external test device; The shift shaft (1) is arranged along the length direction of the mounting frame (2), and the two shift load mounting blocks (3) are respectively slidably mounted on the two ends of the shift shaft (1) and are respectively fixedly mounted on the bottom surface of the mounting frame (2); A plurality of annular grooves (7) are arranged on the circumferential sides of both ends of the shift shaft (1), the plurality of annular grooves (7) are evenly distributed along the axial direction of the shift shaft (1), and a gap is arranged between two adjacent annular grooves (7); The number of the elastic self-locking pin (4) in each group is at least one, and the two groups of elastic self-locking pins (4) are respectively mounted on two shift load mounting blocks (3), and their elastic ends abut against the annular groove (7) to form an elastic engagement structure for providing shift damping when the shift shaft (1) moves along its axial direction to shift gears; The shift head tooling (5) is fixedly mounted on the shift shaft (1), the gear selection guide sleeve fixing tooling (6) is fixedly mounted on the mounting frame (2), and the axes of the shift head tooling (5) and the gear selection guide sleeve fixing tooling (6) are located on the same radial section of the shift shaft (1); The bottom surface of the mounting frame (2) is provided with a guide member, the lower side of the shift head tooling (5) is slidably connected to the guide member, and the sliding direction is arranged along the axial direction of the shift shaft (1); the upper side of the shift head tooling (5) is provided with a shift groove (9) corresponding to the shift head (03) on the shift lever (02) of the electric control shift actuator (01) to be tested, and the length direction of the shift groove (9) is arranged along the width direction of the mounting frame (2); The electrically controlled gear selection and shifting actuator (01) to be tested is detachably mounted on a mounting frame (2), and the electrically controlled gear selection and shifting actuator (01) and the gear selection guide sleeve fixing tooling (6) are respectively located on both sides of the gear shifting shaft (1) along the width direction of the mounting frame (2); the end of the gear selection and shifting rod (02) in the electrically controlled gear selection and shifting actuator (01) is connected to the gear selection guide sleeve fixing tooling (6), and is used to position and support the gear selection and shifting rod (02) through the gear selection guide sleeve fixing tooling (6); the shifting head (03) on the gear selection and shifting rod (02) is connected to the shifting groove (9) of the gear shifting head (03) tooling, and is used to select gears by driving the shifting head (03) to slide along the shifting groove (9), or to shift gears by driving the shifting head (03) to drive the gear shifting shaft (1) to move along its axial direction through the gear shifting head tooling (5).

2. The fatigue test device for an electronically controlled gear selection and shifting actuator according to claim 1, characterized in that: The mounting frame (2) comprises a first side plate (21), a second side plate (22) and a bottom plate (23); The first side plate (21) and the second side plate (22) are relatively mounted on the upper side of the bottom plate (23) at the edge along the length direction thereof; The gear selection guide sleeve fixing tool (6) is fixedly mounted on the inner wall of the first side plate (21), the electric-controlled gear selection and shifting actuator (01) to be tested is detachably mounted on the outer wall of the second side plate (22), and the end of the gear selection and shifting lever (02) passes through the second side plate (22) along the width direction of the bottom plate (23) and is connected to the gear selection guide sleeve fixing tool (6); The shift load mounting block (3) is mounted on the upper side of the base plate (23), and the guide member is arranged on the base plate (23).

3. The fatigue test device for an electronically controlled gear selection and shifting actuator according to claim 2, characterized in that: The mounting frame (2) further comprises a plurality of connecting rods (24); The plurality of connecting rods (24) are arranged along the width direction of the bottom plate (23), and the two ends thereof are respectively mounted on the first side plate (21) and the second side plate (22) on the side close to each other.

4. The fatigue test device for an electronically controlled gear selection and shifting actuator according to claim 3 is characterized in that: The number of the connecting rods (24) is two, and the two connecting rods (24) are symmetrically arranged along the length direction of the bottom plate (23); The guide member is a guide groove (8).

5. The fatigue test device for an electronically controlled gear selection and shifting actuator according to any one of claims 1 to 4, characterized in that: The shift head tooling (5) comprises a shift block (51) and a guide block (52); The shifting groove (9) is arranged on the upper side of the shifting block (51), and the shifting block (51) is sleeved on the shifting shaft (1); The upper end of the guide block (52) is connected to the lower side of the shift block (51), and the lower end is slidably connected to the guide member.

6. The fatigue test device for an electronically controlled gear selection and shifting actuator according to claim 5, characterized in that: The gear selection guide sleeve fixing tool (6) is a fixing block; One side of the fixed block is fixedly mounted on the mounting frame (2), and the other side is provided with a guide hole adapted to the end of the shift lever (02), and the end of the shift lever (02) is connected to the guide hole.

7. The fatigue test device for an electronically controlled gear selection and shifting actuator according to claim 1, characterized in that: A plurality of connecting screw holes (10) are arranged on the bottom surface of the mounting frame (2), and are used to connect the mounting frame (2) to an external test device via the connecting screw holes (10) and corresponding bolts.

8. The fatigue test device for an electronically controlled gear selection and shifting actuator according to claim 1 is characterized in that: The number of the elastic self-locking pin (4) in each group is one.

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