An analog load device for a shift actuator

Abstract

The present invention discloses a simulated load device for a shift actuator, which is provided with a bracket, a transmission mechanism and a simulated load mechanism; the transmission mechanism is provided with a connecting ball pin, a connecting rod, a rotating shaft and a toothed plate, and the simulated load mechanism is provided with a guide member, a slider, a force applying rod, a guide post and a spring. The present invention is used to provide a load for the shift actuator, which can not only simulate the actual working condition that the shift actuator is not subjected to force when driving the transmission to switch to any gear, but also simulate the actual working condition that the shift actuator needs to overcome the load during the process of driving the transmission to switch gears. It not only solves the problem that using weights to provide load does not conform to the actual load state of the shifter, but also solves the problems of large volume, high cost and uneven internal temperature when using an actual transmission as a load device. It has the advantages of simple and compact structure, small volume, low cost, no problem of uneven temperature, high reliability and easy maintenance.

Description

Technical Field

[0001] The present invention relates to a simulated load device for a shift actuator. Background Art

[0002] Currently, when conducting durability tests on shift actuators, a certain load needs to be carried for the tests. Most of them are achieved through two methods. One is to carry an actual gearbox, and the other is to use weights to achieve a certain fixed load. These two implementation methods have the following defects:

[0003] Firstly, carrying an actual gearbox requires a large test chamber, resulting in high costs, uneven internal temperature, and failure to achieve the expected test purpose;

[0004] Secondly, when using weight loads, since it is a fixed weight, the actuator still bears the load of the weights after shifting, which does not conform to the actual non-loaded state. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a simulated load device for a shift actuator to solve the problems that the existing load devices for shift durability tests either have the problems of large volume, high cost, and failure to achieve the expected test purpose due to uneven internal temperature (for actual gearboxes), or have the problem of not conforming to the actual load state of the shift actuator (for weight loads).

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

[0007] A simulated load device for a shift actuator, characterized in that: the simulated load device is provided with a bracket, a transmission mechanism, and a simulated load mechanism;

[0008] The transmission mechanism is provided with a connecting ball pin, a connecting rod, a rotating shaft, and a toothed plate. The rotating shaft is rotatably installed on the bracket. The connecting ball pin is fixedly connected to the rotating shaft through the connecting rod, and the axis of the connecting ball pin is parallel to the axis of the rotating shaft. The toothed plate is fixed on the rotating shaft, and the toothed plate is provided with a toothed surface. The toothed surface is provided with a concave surface for each gear of the shift actuator to be measured, and any two adjacent concave surfaces are connected by a convex surface;

[0009] The simulated load mechanism is provided with a guide, a slider, a force application rod, a guide post and a spring. The guide is relatively fixed to the bracket, and the guide is provided with a guide hole. A notch is provided on the side surface of the slider. The force application rod is connected to the slider and is located in the notch. The first end of the guide post is fixedly connected to the slider, and the second end is slidably installed in the guide hole of the guide. The spring is sleeved on the guide post and abuts between the guide and the slider. Wherein, the axis of the guide post is perpendicular to the axis of the force application rod, and the axis of the force application rod is parallel to the axis of the rotating shaft;

[0010] Moreover, the toothed surface of the toothed plate contacts the force application rod in the notch, such that: when the toothed plate rotates, the force application rod slides on the toothed surface under the action of the spring force of the spring, and when the force application rod slides into any one of the concave surfaces of the toothed surface, the spring is in its original length state;

[0011] In addition, an installation position is provided on the bracket. When the housing of the tested shift actuator is fixed at this installation position, the drive end ball bowl of the tested shift actuator can be installed on the shift ball pin of the gearbox, such that: when the tested shift actuator performs a shift operation from gear A to gear B, the drive end ball bowl drives the toothed plate to rotate by a corresponding angle, so that the force application rod slides from the concave surface corresponding to gear A into the concave surface corresponding to gear B, where gear A and gear B are any two gears of the tested shift actuator.

[0012] As a preferred embodiment of the present invention: the guide is composed of a guide seat, a guide sleeve and a cover plate. The guide sleeve is composed of a guide sleeve body and a guide sleeve flange provided on the outer wall of the guide sleeve body. A through hole is provided at the middle position of the cover plate. The guide sleeve body is embedded in the installation through hole of the guide seat, and the cover plate is fixedly connected to the guide seat in a detachable connection manner, and the cover plate presses and fixes the guide sleeve flange of the guide sleeve on the end surface of the guide seat, such that the installation through hole of the guide seat, the lumen of the guide sleeve body, and the through hole of the cover plate are sequentially communicated;

[0013] The lumen of the guide sleeve body serves as the guide hole of the guide. The second end of the guide post sequentially passes through the installation through hole of the guide seat, the lumen of the guide sleeve body, and the through hole of the cover plate, and the guide post is slidably installed in the lumen of the guide sleeve body. The spring is sleeved on the guide post and abuts between the guide sleeve of the guide and the slider.

[0014] As a preferred embodiment of the present invention: The simulation load mechanism is provided with two guide columns, the axes of the two guide columns are parallel to each other, the plane where the axes of the two guide columns are located is perpendicular to the axis of the force application rod, and the distances from the axes of the two guide columns to the axis of the force application rod are equal; and, a spring is sleeved on each of the guide columns.

[0015] As a preferred embodiment of the present invention: The simulation load mechanism is further provided with a base, the top surface of the base is provided with a guide rail, the extending direction of the guide rail is parallel to the axis of the guide column, the bottom surface of the slider is provided with a slide rail groove, and the slider is slidably mounted on the guide rail through the slide rail groove; the guide seat of the guiding member is fixed on the base;

[0016] The base is fixed on the bracket so that the guiding member and the bracket are relatively fixed.

[0017] Preferably, the slide rail groove is a dovetail groove.

[0018] For maintenance, as a preferred embodiment of the present invention: The guide seat of the guiding member is fixed on the base by screws, and the base is fixed on the bracket by screws; the slider is provided with a force application rod mounting hole communicating with the notch, the force application rod passes through the force application rod mounting hole and extends into the notch, and the force application rod is connected by a C-shaped circlip; the end face of the slider is provided with a guide column mounting hole, and the slider is provided with a fixing pin hole communicating with the guide column mounting hole, a pin insertion through hole is opened at the first end of the guide column, the first end of the guide column is embedded in the guide column mounting hole so that the pin insertion through hole of the guide column communicates with the fixing pin hole of the slider; a pin is inserted into the connected fixing pin hole and pin insertion through hole so that the guide column is fixedly connected with the slider.

[0019] As a preferred embodiment of the present invention: The bracket is composed of an upper base, a lower base, a plurality of columns connected between the bottom surface of the upper base and the top surface of the lower base, and a cushion block fixed on the top surface of the upper base, wherein, the upper base is provided with an axis through hole;

[0020] The transmission mechanism is further provided with an upper ball bearing and a lower ball bearing. The inner rings of the upper ball bearing and the lower ball bearing are respectively fixedly installed in the middle part and the lower end part of the rotating shaft. The outer ring of the upper ball bearing is fixed on the bottom surface of the upper base, and the outer ring of the lower ball bearing is fixed on the top surface of the lower base. The upper end part of the rotating shaft passes through the axis through hole of the upper base so that the rotating shaft is rotatably installed on the bracket; the connecting ball pin and the connecting rod are both located above the upper base, and the upper end part of the rotating shaft is fixedly connected with the connecting ball pin through the connecting rod;

[0021] The spacer block serves as the installation position of the bracket, enabling the housing of the tested shift actuator to be fixed to the spacer block by bolts;

[0022] The toothed plate is fixed on the rotating shaft and located between the upper ball bearing and the lower ball bearing, and the guide is fixed on the top surface of the lower base.

[0023] Preferably, both the connecting ball pin and the upper end of the rotating shaft are threadedly connected to the connecting rod, and are locked by nuts between the connecting ball pin and the connecting rod and between the upper end of the rotating shaft and the connecting rod.

[0024] Preferably, the toothed plate is provided with a shaft mounting hole, a square pin hole communicating with the shaft mounting hole, and a threaded hole. The rotating shaft is inserted into the shaft mounting hole, and a square pin inserted into the square pin hole presses the rotating shaft in the shaft mounting hole, and a setscrew threadedly connected to the threaded hole presses the rotating shaft in the shaft mounting hole.

[0025] As a preferred embodiment of the present invention: the simulation load device is used to simulate the load borne by the tested shift actuator when driving the adapted transmission to shift gears. At this time, the distance between the axis of the connecting ball pin and the axis of the rotating shaft is equal to the distance between the axis of the shift ball pin of the transmission and the axis of the shift rotating shaft, and the toothed surface of the toothed plate is the same as the toothed surface of the shift toothed plate of the transmission.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] First, the present invention is used to provide a load for the shift actuator, which can not only simulate the actual working condition that the shift actuator is not stressed when driving the transmission to switch to any gear, but also simulate the actual working condition that the shift actuator needs to overcome the load during the process of driving the transmission to switch gears. It solves the problem that using weights to provide load does not conform to the actual load state of the shifter, and also solves the problems of large volume, high cost, and uneven internal temperature when using an actual transmission as a load device. It has the advantages of simple and compact structure, small volume, low cost, no problem of uneven temperature, high reliability, and easy maintenance.

[0028] Second, the present invention adopts a guide composed of a guide seat, a guide sleeve and a cover plate, which can be easily disassembled and assembled to facilitate the replacement of the spring more conveniently and quickly, so as to realize that the simulation load device simulates a variety of different actual loads and maximum loads.

[0029] Third, the present invention can either provide the tested shift actuator with a simulation load exactly the same as when it drives the transmission to shift gears, or always provide the tested shift actuator with the maximum load. Brief Description of the Drawings

[0030] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0031] Figure 1 It is a schematic structural diagram of the simulation load device of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the toothed plate in the present invention;

[0033] Figure 3 It is a schematic connection structure diagram of the toothed plate and the simulation load mechanism in the present invention;

[0034] Figure 4 It is an exploded schematic structural diagram of the transmission mechanism and the simulation load mechanism in the present invention;

[0035] Figure 5 It is a sectional view of the simulation load mechanism in the present invention;

[0036] Figure 6 It is a simplified connection structure diagram of the shift execution mechanism and the transmission. Detailed Embodiment

[0037] The present invention will be further described below in conjunction with the embodiments:

[0038] Embodiment 1

[0039] As Figures 1 to 5 shown, the present invention discloses a simulation load device for a shift execution mechanism, characterized in that: the simulation load device is provided with a bracket, a transmission mechanism and a simulation load mechanism;

[0040] The transmission mechanism is provided with a connecting ball pin 1, a connecting rod 2, a rotating shaft 3 and a toothed plate 4. The rotating shaft 3 is rotatably installed on the bracket. The connecting ball pin 1 is fixedly connected to the rotating shaft 3 through the connecting rod 2, and the axis of the connecting ball pin 1 is parallel to the axis of the rotating shaft 3. The toothed plate 4 is fixed on the rotating shaft 3, and the toothed plate 4 is provided with a toothed surface 4-1. The toothed surface 4-1 is provided with a concave surface 4-1a for each gear of the shift execution mechanism to be tested, and any two adjacent concave surfaces 4-1a are connected by a convex surface 4-1b. For example: when it is necessary to test the PRND gears of the shift execution mechanism to be tested, the toothed surface 4-1 needs to be provided with four concave surfaces 4-1a, corresponding to the P gear, R gear, N gear, and D gear respectively.

[0041] The simulated load mechanism is provided with a guide member 5, a slider 6, a force application rod 7, a guide post 8 and a spring 9. The guide member 5 is relatively fixed to the bracket, and the guide member 5 is provided with a guide hole. A notch 6a is provided on the side surface of the slider 6. The force application rod 7 is connected to the slider 6 and is located in the notch 6a. The first end of the guide post 8 is fixedly connected to the slider 6, and the second end is slidably installed in the guide hole of the guide member 5. The spring 9 is sleeved on the guide post 8 and abuts between the guide member 5 and the slider 6. Among them, the axis of the guide post 8 is perpendicular to the axis of the force application rod 7, and the axis of the force application rod 7 is parallel to the axis of the rotating shaft 3.

[0042] Moreover, the toothed surface 4-1 of the toothed plate 4 is in contact with the force application rod 7 in the notch 6a, such that: when the toothed plate 4 rotates, the force application rod 7 slides on the toothed surface 4-1 under the action of the spring force of the spring 9, and when the force application rod 7 slides into any one of the concave surfaces 4-1a of the toothed surface 4-1, the spring 9 is in its original length state.

[0043] In addition, an installation position is provided on the bracket. When the housing of the tested shift actuator is fixed at this installation position, the drive end ball bowl 10 of the tested shift actuator can be installed on the shift ball pin 11 of the gearbox, such that: when the tested shift actuator performs a shift operation from gear A to gear B, the drive end ball bowl 10 drives the toothed plate 4 to rotate by a corresponding angle, so that the force application rod 7 slides from the concave surface 4-1a corresponding to gear A into the concave surface 4-1a corresponding to gear B, where gear A and gear B are any two gears of the tested shift actuator.

[0044] The usage method and working principle of the simulated load device of the present invention are as follows:

[0045] During use, it should be ensured that the gear corresponding to the concave surface 4-1a where the force application rod 7 is currently located is the same as the current gear of the tested shift actuator. For example: if the current output gear of the tested shift actuator is the P gear, then the force application rod 7 should also be currently in the concave surface 4-1a corresponding to the P gear. In this case, the housing of the tested shift actuator is fixed at the installation position on the bracket, and the drive end ball bowl 10 of the tested shift actuator is installed on the connecting ball pin 1.

[0046] Thus, when testing the tested shift actuator, the simulated load device of the present invention can provide a suitable load for the tested shift actuator:

[0047] Since when the force - applying rod 7 slides into any one of the concave surfaces 4 - 1a of the toothed surface 4 - 1, the spring 9 is in its original length state, that is, the spring force of the spring 9 is zero. Therefore, when the tested shift actuator is in any gear position, the force - applying rod 7 enters the concave surface 4 - 1a corresponding to this gear position, so that the driving - end ball bowl 10 of the tested shift actuator is not stressed, simulating the actual working condition that the shift actuator is not stressed when driving the transmission to switch to any gear position.

[0048] When the tested shift actuator performs a shift operation between two adjacent gear positions (for example, from the N - gear to the D - gear), the driving - end ball bowl 10 of the tested shift actuator drives the transmission mechanism to rotate by a corresponding angle around the axis of the rotating shaft 3, so that the force - applying rod 7 slides from the concave surface 4 - 1a corresponding to the previous gear position (for example, the N - gear) through the convex surface 4 - 1b between the two gear positions and into the concave surface 4 - 1a corresponding to the next gear position (for example, the D - gear). During this sliding process, the aforementioned convex surface 4 - 1b compresses the spring 9 through the force - applying rod 7 and the slider 6, and the compression amount of the spring 9 depends on the shape of the aforementioned convex surface 4 - 1b. Therefore, during the process of the tested shift actuator performing a shift operation between two adjacent gear positions, the simulation load mechanism can generate a resistance to the driving - end ball bowl 10 of the tested shift actuator through the transmission mechanism, simulating the actual working condition that the shift actuator needs to overcome the load during the process of driving the transmission to switch gear positions.

[0049] Among them, by selecting the parameters of the spring 9 (which determines the spring force generated per unit length of compression of the spring 9), the shape of the convex surface 4 - 1b (which determines the change in the compressed length of the spring 9 during the shift between two adjacent gear positions), and the distance between the axis of the connecting ball pin 1 and the axis of the rotating shaft 3 (which determines the ratio of the spring force generated by the compression of the spring 9 transmitted to the driving - end ball bowl 10 of the tested shift actuator through the transmission mechanism), the simulation load device of the present invention can provide the load change required by design for the tested shift actuator during the shift process. For example: it can provide the same simulation load as that when the tested shift actuator drives the transmission to shift gears, or it can always provide the maximum load for the tested shift actuator.

[0050] In summary, the present invention is used to provide a load for the shift actuator, which can simulate the actual working conditions where the shift actuator drives the gearbox to shift to any gear without being affected by force, and can also simulate the actual working conditions where the shift actuator needs to overcome the load during the process of driving the gearbox to shift gears. It not only solves the problem that using weights to provide the load does not conform to the actual load state of the shifter, but also solves the problems of large volume, high cost, and uneven internal temperature when using an actual gearbox as the load device. It has the advantages of simple and compact structure, small volume, low cost, no problem of uneven temperature, high reliability, and easy maintenance and repair.

[0051] Embodiment 2

[0052] Based on the above Embodiment 1, the following preferred implementation manners are further adopted in this Embodiment 2:

[0053] The guiding member 5 is composed of a guiding seat 5-1, a guiding sleeve 5-2, and a cover plate 5-3. The guiding sleeve 5-2 is composed of a guiding sleeve body 5-21 and a guiding sleeve flange 5-22 provided on the outer wall of the guiding sleeve body 5-21. A through hole 5-3a is provided at the middle position of the cover plate 5-3. The guiding sleeve body 5-21 is embedded in the installation through hole 5-1a of the guiding seat 5-1. The cover plate 5-3 is fixed on the guiding seat 5-1 by detachable connection methods such as bolt connection and snap connection. And the cover plate 5-3 presses and fixes the guiding sleeve flange 5-22 of the guiding sleeve 5-2 on the end face of the guiding seat 5-1, so that the installation through hole 5-1a of the guiding seat 5-1, the lumen 5-21a of the guiding sleeve body 5-21, and the through hole 5-3a of the cover plate 5-3 are sequentially communicated;

[0054] The lumen 5-21a of the guiding sleeve body 5-21 serves as the guiding hole of the guiding member 5. The second end of the guiding column 8 sequentially passes through the installation through hole 5-1a of the guiding seat 5-1, the lumen 5-21a of the guiding sleeve body 5-21, and the through hole 5-3a of the cover plate 5-3. And the guiding column 8 is slidably installed in the lumen 5-21a of the guiding sleeve body 5-21; The spring 9 is sleeved on the guiding column 8 and abuts between the guiding sleeve 5-2 of the guiding member 5 and the slider 6.

[0055] Thus, the guiding member 5 can be conveniently disassembled and assembled, so as to more conveniently and quickly replace the spring 9, and realize that the simulation load device simulates a variety of different actual loads and the maximum load.

[0056] Embodiment 3

[0057] Based on the above Embodiment 1 or Embodiment 2, the following preferred implementation manners are further adopted in this Embodiment 3:

[0058] The simulation load mechanism is provided with two guide posts 8, the axes of the two guide posts 8 are parallel to each other, the plane where the axes of the two guide posts 8 are located is perpendicular to the axis of the force application rod 7, and the distances from the axes of the two guide posts 8 to the axis of the force application rod 7 are equal; moreover, each guide post 8 is sleeved with a spring 9.

[0059] Thus, the two sets of symmetrically arranged guide posts 8 and springs 9 can ensure the balance of the force on the slider 6, so as to ensure the stability and accuracy of the resistance applied by the force application rod 7 to the toothed plate 4.

[0060] Embodiment Four

[0061] On the basis of the above Embodiment Two or Embodiment Three, the following preferred implementation manner is further adopted in this Embodiment Four:

[0062] The simulation load mechanism is further provided with a base 16, the top surface of the base 16 is provided with a guide rail 17, the extending direction of the guide rail 17 is parallel to the axis of the guide post 8, the bottom surface of the slider 6 is provided with a slide rail groove 6b, and the slider 6 is slidably installed on the guide rail 17 through the slide rail groove 6b; the guide seat 5-1 of the guide member 5 is fixed on the base 16;

[0063] The base 16 is fixed on the bracket so that the guide member 5 is relatively fixed to the bracket.

[0064] Among them, preferably: the slide rail groove 6b is a dovetail groove to ensure the stability of the load provided by the simulation load device.

[0065] Embodiment Five

[0066] On the basis of the above Embodiment Four, the following preferred implementation manner is further adopted in this Embodiment Five:

[0067] The guide seat 5-1 of the guide member 5 is fixed on the base 16 by screws, and the base 16 is fixed on the bracket by screws; the slider 6 is provided with a force application rod mounting hole communicating with the notch 6a, the force application rod 7 passes through the force application rod mounting hole and extends into the notch 6a, and the force application rod 7 is connected by a C-shaped circlip 18; the end face of the slider 6 is provided with a guide post mounting hole 6c, and the slider 6 is provided with a fixing pin hole 6d communicating with the guide post mounting hole 6c, the first end of the guide post 8 is provided with a pin through hole, and the first end of the guide post 8 is embedded in the guide post mounting hole 6c so that the pin through hole of the guide post 8 communicates with the fixing pin hole 6d of the slider 6; a pin 19 is inserted into the connected fixing pin hole 6d and pin through hole to fixedly connect the guide post 8 with the slider 6.

[0068] Embodiment Six

[0069] Based on any one of the above Embodiments 1 to 5, the following preferred implementation manners are further adopted in Embodiment 6:

[0070] The bracket is composed of an upper base 20, a lower base 21, a plurality of upright columns 22 connected between the bottom surface of the upper base 20 and the top surface of the lower base 21, and a cushion block 23 fixed on the top surface of the upper base 20. Among them, the upper base 20 is provided with an axial through hole;

[0071] The transmission mechanism is further provided with an upper ball bearing 24 and a lower ball bearing 25. The inner rings of the upper ball bearing 24 and the lower ball bearing 25 are respectively fixedly installed in the middle and lower end portions of the rotating shaft 3. The outer ring of the upper ball bearing 24 is fixed to the bottom surface of the upper base 20, and the outer ring of the lower ball bearing 25 is fixed to the top surface of the lower base 21. The upper end portion of the rotating shaft 3 passes through the axial through hole of the upper base 20, so that the rotating shaft 3 is rotatably installed on the bracket; the connecting ball pin 1 and the connecting rod 2 are both located above the upper base 20, and the upper end portion of the rotating shaft 3 is fixedly connected to the connecting ball pin 1 through the connecting rod 2;

[0072] The cushion block 23 serves as the installation position of the bracket, so that the housing of the tested shift actuator can be fixed on the cushion block 23 by bolts;

[0073] The toothed plate 4 is fixed on the rotating shaft 3 and is located between the upper ball bearing 24 and the lower ball bearing 25, and the guide member 5 is fixed on the top surface of the lower base 21.

[0074] Among them, preferably: both the connecting ball pin 1 and the upper end portion of the rotating shaft 3 are threadedly connected to the connecting rod 2, and both between the connecting ball pin 1 and the connecting rod 2 and between the upper end portion of the rotating shaft 3 and the connecting rod 2 are locked by nuts.

[0075] Among them, preferably: the toothed plate 4 is provided with a shaft mounting hole 4a, a square pin hole 4b communicating with the shaft mounting hole 4a, and a threaded hole 4c. The rotating shaft 3 is inserted into the shaft mounting hole 4a, and a square pin 26 inserted into the square pin hole 4b presses the rotating shaft 3 in the shaft mounting hole 4a, and a set screw threadedly connected to the threaded hole 4c presses the rotating shaft 3 in the shaft mounting hole 4a to prevent relative movement between the rotating shaft 3 and the toothed plate 4.

[0076] Embodiment 7

[0077] Based on any one of the above Embodiments 1 to 6, the following preferred implementation manners are further adopted in Embodiment 7:

[0078] The described simulated load device is used to simulate the load borne by the shift actuator under test when driving the shift of the adapted transmission. At this time, the distance between the axis of the connecting ball pin 1 and the axis of the rotating shaft 3 is equal to the distance between the axis of the shift ball pin 11 of the transmission and the axis of the shift rotating shaft 12, and the tooth profile surface 4-1 of the toothed plate 4 is the same as the tooth profile surface of the shift toothed plate 13 of the transmission.

[0079] Among them, referring to Figure 6 , the way in which the shift actuator under test drives the shift of the transmission is briefly described as follows:

[0080] The transmission has a shift ball pin 11 and a shift rocker arm 14 located outside its transmission housing 15, and a shift toothed plate 13 located inside the transmission housing 15. The shift ball pin 11 is fixed to one end of the shift rocker arm 14, the shift toothed plate 13 is fixed to the other end of the shift rocker arm 14 through a shift rotating shaft 12, and the axis of the shift ball pin 11 is parallel to the axis of the shift rotating shaft 12;

[0081] The housing of the shift actuator under test is fixed to the transmission housing 15. The driving end ball bowl 10 of the shift actuator under test is installed on the shift ball pin 11 of the transmission. When the shift actuator under test receives a gear signal from a shifter (such as a rotary shifter, a lever shifter, etc.) and performs a corresponding shift operation according to this gear signal, the driving end ball bowl 10 drives the shift ball pin 11, the shift rocker arm 14, the shift rotating shaft 12, and the shift toothed plate 13 to rotate by a corresponding angle around the axis of the shift rotating shaft 12, and the tooth profile surface of the shift toothed plate 13 controls the transmission to shift through the transmission system inside the transmission housing 15.

[0082] The present invention is not limited to the above specific embodiments. Based on the above content, according to the common general knowledge and customary means in the art, without departing from the above basic technical idea of the present invention, the present invention can also make various other forms of equivalent modifications, substitutions or changes, all of which fall within the protection scope of the present invention.

Claims

1. A simulation load device for a shift actuator, characterized in that: The described simulation load device is provided with a bracket, a transmission mechanism and a simulation load mechanism; The transmission mechanism is provided with a connecting ball pin (1), a connecting rod (2), a rotating shaft (3) and a toothed plate (4). The rotating shaft (3) is rotatably installed on the bracket. The connecting ball pin (1) is fixedly connected to the rotating shaft (3) through the connecting rod (2), and the axis of the connecting ball pin (1) is parallel to the axis of the rotating shaft (3). The toothed plate (4) is fixed on the rotating shaft (3), and the toothed plate (4) is provided with a toothed surface (4-1). The toothed surface (4-1) is provided with a concave surface (4-1a) corresponding to each gear of the tested shift actuator, and any two adjacent concave surfaces (4-1a) are connected by a convex surface (4-1b); The simulation load mechanism is provided with a guide member (5), a slider (6), a force application rod (7), a guide post (8) and a spring (9). The guide member (5) is relatively fixed to the bracket, and the guide member (5) is provided with a guide hole. The side surface of the slider (6) is provided with a notch (6a). The force application rod (7) is connected to the slider (6) and is located in the notch (6a). The first end of the guide post (8) is fixedly connected to the slider (6), and the second end is slidably installed in the guide hole of the guide member (5). The spring (9) is sleeved on the guide post (8) and abuts between the guide member (5) and the slider (6); wherein, the axis of the guide post (8) is perpendicular to the axis of the force application rod (7), and the axis of the force application rod (7) is parallel to the axis of the rotating shaft (3); Moreover, the toothed surface (4-1) of the toothed plate (4) contacts the force application rod (7) in the notch (6a), such that: when the toothed plate (4) rotates, the force application rod (7) slides on the toothed surface (4-1) under the spring force of the spring (9), and when the force application rod (7) slides into any one of the concave surfaces (4-1a) of the toothed surface (4-1), the spring (9) is in its original length state; In addition, the bracket is provided with an installation position. When the housing of the tested shift actuator is fixed at this installation position, the driving end ball bowl (10) of the tested shift actuator can be installed on the shift ball pin (11) of the gearbox, such that: when the tested shift actuator performs a shift operation from gear A to gear B, the driving end ball bowl (10) drives the toothed plate (4) to rotate a corresponding angle, so that the force application rod (7) slides from the concave surface (4-1a) corresponding to gear A into the concave surface (4-1a) corresponding to gear B, where gear A and gear B are any two gears of the tested shift actuator.

2. The simulated load device for a shift actuator according to claim 1, characterized in that: The guiding member (5) is composed of a guiding seat (5-1), a guide sleeve (5-2) and a cover plate (5-3). The guide sleeve (5-2) is composed of a guide sleeve body (5-21) and a guide sleeve flange (5-22) provided on the outer wall of the guide sleeve body (5-21). A through hole (5-3a) is provided in the middle position of the cover plate (5-3). The guide sleeve body (5-21) is fitted in the installation through hole (5-1a) of the guiding seat (5-1). The cover plate (5-3) is fixed on the guiding seat (5-1) in a detachable connection manner, and the cover plate (5-3) presses and fixes the guide sleeve flange (5-22) of the guide sleeve (5-2) on the end face of the guiding seat (5-1), so that the installation through hole (5-1a) of the guiding seat (5-1), the lumen (5-21a) of the guide sleeve body (5-21) and the through hole (5-3a) of the cover plate (5-3) are communicated in sequence; The lumen (5-21a) of the guide sleeve body (5-21) serves as the guiding hole of the guiding member (5). The second end of the guide post (8) sequentially passes through the installation through hole (5-1a) of the guiding seat (5-1), the lumen (5-21a) of the guide sleeve body (5-21) and the through hole (5-3a) of the cover plate (5-3), and the guide post (8) is slidably installed in the lumen (5-21a) of the guide sleeve body (5-21); The spring (9) is sleeved on the guide post (8) and abuts between the guide sleeve (5-2) of the guiding member (5) and the slider (6).

3. The simulated load device for a shift actuator according to claim 1, characterized in that: The simulation load mechanism is provided with two guide posts (8). The axes of the two guide posts (8) are parallel to each other. The plane where the axes of the two guide posts (8) are located is perpendicular to the axis of the force applying rod (7), and the distances from the axes of the two guide posts (8) to the axis of the force applying rod (7) are equal; Moreover, a spring (9) is sleeved on each guide post (8).

4. The simulated load device for a shift actuator according to claim 2, characterized in that: The simulation load mechanism is further provided with a base (16). A guide rail (17) is provided on the top surface of the base (16). The extending direction of the guide rail (17) is parallel to the axis of the guide post (8). A slide rail groove (6b) is provided on the bottom surface of the slider (6). The slider (6) is slidably installed on the guide rail (17) through the slide rail groove (6b); The guiding seat (5-1) of the guiding member (5) is fixed on the base (16); The base (16) is fixed on the bracket so that the guiding member (5) is relatively fixed to the bracket.

5. The simulated load device for a shift actuator according to claim 4, characterized in that: The slide rail groove (6b) is a dovetail groove.

6. The simulated load device for a shift actuator according to claim 4, characterized in that: The guide seat (5-1) of the guide member (5) is fixed to the base (16) by screws, and the base (16) is fixed to the bracket by screws; the slider (6) is provided with a force application rod mounting hole communicating with the notch (6a), the force application rod (7) passes through the force application rod mounting hole and extends into the notch (6a), and the force application rod (7) is connected by a C-shaped circlip (18); the end face of the slider (6) is provided with a guide post mounting hole (6c), and the slider (6) is provided with a fixing pin hole (6d) communicating with the guide post mounting hole (6c). The first end of the guide post (8) is provided with a pin through hole, and the first end of the guide post (8) is fitted in the guide post mounting hole (6c) so that the pin through hole of the guide post (8) communicates with the fixing pin hole (6d) of the slider (6); a pin (19) is inserted into the communicating fixing pin hole (6d) and pin through hole to fixedly connect the guide post (8) and the slider (6).

7. The simulated load device for a shift actuator according to any one of claims 1 to 6, characterized in that: The bracket is composed of an upper base (20), a lower base (21), a plurality of columns (22) connected between the bottom surface of the upper base (20) and the top surface of the lower base (21), and a cushion block (23) fixed on the top surface of the upper base (20). Among them, the upper base (20) is provided with a shaft through hole; The transmission mechanism is further provided with an upper ball bearing (24) and a lower ball bearing (25). The inner rings of the upper ball bearing (24) and the lower ball bearing (25) are respectively fixedly installed in the middle and lower end parts of the rotating shaft (3). The outer ring of the upper ball bearing (24) is fixed to the bottom surface of the upper base (20), and the outer ring of the lower ball bearing (25) is fixed to the top surface of the lower base (21). The upper end part of the rotating shaft (3) passes through the shaft through hole of the upper base (20) so that the rotating shaft (3) is rotatably installed on the bracket; the connecting ball pin (1) and the connecting rod (2) are both located above the upper base (20), and the upper end part of the rotating shaft (3) is fixedly connected to the connecting ball pin (1) through the connecting rod (2); The cushion block (23) serves as the installation position of the bracket, so that the housing of the tested shift actuator can be fixed to the cushion block (23) by bolts; The toothed plate (4) is fixed on the rotating shaft (3) and is located between the upper ball bearing (24) and the lower ball bearing (25), and the guide member (5) is fixed on the top surface of the lower base (21).

8. The simulated load device for a shift actuator according to claim 7, characterized in that: Both the connecting ball pin (1) and the upper end part of the rotating shaft (3) are threadedly connected to the connecting rod (2), and both between the connecting ball pin (1) and the connecting rod (2) and between the upper end part of the rotating shaft (3) and the connecting rod (2) are locked by nuts.

9. The simulated load device for a shift actuator according to claim 7, characterized in that: The toothed plate (4) is provided with a shaft mounting hole (4a), a square pin hole (4b) communicating with the shaft mounting hole (4a), and a threaded hole (4c). The rotating shaft (3) is inserted into the shaft mounting hole (4a), and a square pin (26) inserted into the square pin hole (4b) presses the rotating shaft (3) in the shaft mounting hole (4a). A set screw threadedly connected to the threaded hole (4c) presses the rotating shaft (3) in the shaft mounting hole (4a).

10. The simulated load device for a shift actuator according to any one of claims 1 to 6, characterized in that: The described simulation load device is used to simulate the load borne by the tested shift actuator when driving the adapted gearbox to shift gears. At this time, the distance between the axis of the connecting ball pin (1) and the axis of the rotating shaft (3) is equal to the distance between the axis of the shift ball pin (11) of the gearbox and the axis of the shift rotating shaft (12). The toothed surface (4-1) of the toothed plate (4) is the same as the toothed surface of the shift toothed plate (13) of the gearbox.

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