CN215115153U

CN215115153U - Gear shifting and parking mechanism experimental device

Info

Publication number: CN215115153U
Application number: CN202121418443.4U
Authority: CN
Inventors: 丁斌; 严鉴铂; 刘义; 王凯峰; 冯浩成; 朱佳兴; 张晨光; 侯旭辉; 杨瑄; 赵伟伟
Original assignee: Shaanxi Fast Gear Co Ltd
Current assignee: Shaanxi Fast Gear Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-10
Anticipated expiration: 2031-06-24

Abstract

The utility model provides a gear shifting and parking mechanism experimental device, including setting up first drive arrangement and the second drive arrangement on rack support, first drive arrangement is used for being connected with the parking ratchet and drives the parking ratchet to rotate, the second drive arrangement is connected with one end of crank link mechanism, the other end of crank link mechanism is connected with gearshift, the last push rod that is connected with of gearshift, the removal end and the parking lock contact of push rod are used for making the parking lock remove and insert and realize the parking in the parking ratchet; the utility model discloses experimental apparatus can test shifting and parking mechanism alone, solves in the current experimental mode not comprehensive enough problem to parking mechanism experiment content.

Description

Gear shifting and parking mechanism experimental device

Technical Field

The utility model belongs to the technical field of automatic transmission detects, specifically belong to a shift and parking mechanism experimental apparatus.

Background

With the development and progress of the automobile industry, vehicles equipped with automatic transmissions are gaining popularity due to their excellent comfort and ease of driving. The automatic transmission is internally designed with a device for switching the gears such as P gear, R gear, N gear, D gear and the like, wherein the P gear (parking gear) needs to be locked by inserting a parking pawl into a parking ratchet wheel, so that power transmission is cut off. Need fix the gear through self-lock device after shifting gears, prevent that the car from receiving the undesirable gear switching that appears of external influence.

At present, the test about the automatic transmission gear shifting and parking mechanism mainly tests the whole transmission inside the transmission, independent bench test is rarely carried out on the gear shifting and parking mechanism, and due to the fact that the gear shifting and parking mechanism involve a large number of parts, when a fault occurs, the fault reason is difficult to directly discover, the whole transmission can only be disassembled and analyzed, and time-consuming labor-consuming and analysis difficulty is very large.

In the prior art, when testing of a gear shifting and parking mechanism is performed inside a gearbox, in order to prevent damage to a parking lock and a parking ratchet wheel when the gear is in a P gear, the parking ratchet wheel is not usually rotated, and in actual use on a vehicle, after the gear is hung in the P gear, the parking ratchet wheel usually continues to rotate to enable the parking lock to be completely inserted into the parking ratchet wheel, and abrasion of a parking system cannot be tested in an experiment inside the gearbox in the process. In practical use, when a vehicle stays on a slope after being engaged in a P gear, a parking system can be subjected to static load caused by the weight of the vehicle, and in the gear shifting and parking mechanism test performed in a gearbox, in order to prevent overload of a motor at an output end, the maximum static load which can be borne by the parking mechanism cannot be performed generally.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides a shift and parking mechanism experimental apparatus can test shift and parking mechanism alone, solves in the current experimental mode not comprehensive enough problem to parking mechanism experiment content.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a shift and parking mechanism experimental apparatus, is including setting up first drive arrangement and the second drive arrangement on rack support, first drive arrangement is used for being connected with the parking ratchet and drives the parking ratchet and rotate, the second drive arrangement is connected with crank link mechanism's one end, crank link mechanism's the other end is connected with gearshift, the last push rod that is connected with of gearshift, the removal end and the parking lock contact of push rod are used for making the parking lock remove and insert and realize the parking in the parking ratchet.

Further, the first driving device is a first motor or a cylinder lever device, and the second driving device is a second motor.

Furthermore, an output shaft of the first motor is connected with a driving wheel of a belt pulley device, a driven wheel of the belt pulley device is connected with the parking ratchet wheel, and the diameter of the driven wheel of the belt pulley device is larger than that of the driving wheel.

Further, the first driving device is detachably connected with the parking ratchet wheel.

Further, the cylinder lever device comprises a lever and a cylinder, the lever is arranged on the parking ratchet wheel, and the two ends of the lever are respectively provided with the cylinder.

Furthermore, a connecting hole is formed in the lever, a rotating shaft matched with the connecting hole is arranged on the parking ratchet wheel, and the rotating shaft is inserted into the connecting hole of the lever and used for connecting the parking ratchet wheel with the lever.

Furthermore, the crank connecting rod mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, wherein one end of the first connecting rod is connected with an output shaft of the second driving device through a flat key, a sliding groove is formed in the second connecting rod, and the other end of the first connecting rod is installed in the sliding groove of the second connecting rod through a rolling bearing; one end of the second connecting rod is fixed on the rack support, the other end of the second connecting rod is connected with one end of the third connecting rod, the other end of the third connecting rod is hinged with one end of the fourth connecting rod, a long hole is formed in the other end of the fourth connecting rod, and the tail end of a rotating shaft of the gear shifting device is inserted into the long hole to be fixedly connected.

Further, the first connecting rod is replaced by an eccentric wheel.

The utility model also provides a parking experimental method of shifting and parking mechanism the utility model provides a go on shifting and parking mechanism experimental apparatus, concrete step is as follows:

1) when the parking lock static strength test is carried out, the second driving device is closed, the first driving device is opened, the gear shifting device is placed in a P gear through the crank-link mechanism, the first driving device sequentially applies forward and reverse static limit torques to the parking ratchet wheel, and whether the parking lock is abnormally disengaged or broken is verified;

2) when the parking lock is subjected to impact test, the second driving device is closed, the first driving device is opened, the gear shifting device is placed in the P gear through the crank-link mechanism, the first driving device applies alternating load to the parking ratchet wheel, the parking lock is subjected to impact in two directions, and whether the parking lock is damaged due to abnormal cracks or the like is checked.

The utility model also provides a shift and durable experimental method of parking mechanism the utility model provides a shift and go on the parking mechanism experimental apparatus, concrete step is as follows:

1) starting a first driving device and a second driving device, wherein the first driving device drives a parking ratchet wheel to rotate, and a gear shifting device is in a P gear to realize parking;

2) the second motor continues to rotate, the crank link mechanism connected with the second motor converts the rotary motion of the second motor into reciprocating swing of the gear shifting device, the gear shifting device is driven to sequentially perform gear shifting of P → R → N → D → S → D → N → R → P, and the degree of wear of all parts is checked.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the utility model provides a gear shifting and parking mechanism experimental device, which can visually observe the operation condition of a gear shifting and parking system in the experimental process, thereby reducing the difficulty of analyzing problems; during testing, the first driving device applies load to the parking ratchet wheel to simulate the stress of the parking lock in actual use, so that the abrasion of the parking system is tested in the experiment outside the gearbox, and the secondary damage to other parts in the gearbox when the gear shifting and parking system are damaged is avoided; the utility model discloses an experimental apparatus arranges in a flexible way, can the different gear shifting of adaptation and parking mechanism, and application scope is wide.

The experimental device of the utility model can verify the gear shifting and parking mechanism in the design stage, thereby reducing the loss caused by design change after future production and saving the development cost;

the operation of shifting is carried out to the general use gear motor of prior art, compares with it, the utility model discloses a crank link mechanism connects gearshift and drive arrangement, and crank link mechanism has that response speed is fast, and is not fragile, advantages such as long service life are fit for carrying on the cycle length more, the fast endurance test of frequency.

The utility model discloses select for use the atress of parking lock in the belt pulley transmission simulation in-service, when hanging into P shelves, the motor lasts the drive parking ratchet, and belt pulley drive belt skids this moment to avoid the overload of motor, through the elasticity degree of adjusting the belt pulley, can adjust the moment of torsion that the parking ratchet received, with the different operating mode of simulation.

The torque can only be applyed through the motor usually to prior art, then need choose for use the bigger motor of power if will increase parking ratchet's moment of torsion, causes the increase of cost and spatial arrangement's difficulty, the utility model discloses can provide big moment of torsion to the parking ratchet through cylinder lever arrangement, save the cost, be convenient for arrange.

Drawings

FIG. 1 is a schematic diagram showing the connection of an experimental apparatus when a first driving device is a motor;

FIG. 2 is a schematic diagram of the connection of the experimental apparatus when the first driving device is a cylinder lever device;

FIG. 3 shows the basic structure of the experimental device of the gear shifting and parking mechanism of the present invention;

FIG. 4 is a schematic view of a second driving device;

in the drawings: 1 a gear shifting device; 2, an elastic self-locking device; 3, pushing a rod; 4, parking lock; 5, parking thorn; 6, a belt device; 61 driving wheel; 62 a driven wheel; 63 a conveyor belt; 7 a crank link mechanism; 71 a first link; 72 a second link; 73 a third link; 74 a fourth link; 8 cylinder lever devices; 81 levers; 82 air cylinders; 9 a first motor; 10 second motor.

Detailed Description

In order to make the technical field better understand the present invention, the following description is given with reference to the accompanying drawings and the detailed description.

As shown in fig. 3, the utility model provides a shift and parking mechanism experimental apparatus, including setting up the second drive arrangement who is used for driving gearshift 1 on the rack support, convert the continuous rotary motion of second drive arrangement into gearshift 1's angle rotary motion's crank link mechanism 7, be used for driving the first drive arrangement of parking ratchet 5 pivoted. The output shaft of the second driving device is connected with one end of a crank connecting rod mechanism 7, the other end of the crank connecting rod mechanism 7 is connected with the gear shifting device 1, the lower part of the gear shifting device 1 is provided with a hole, the fixed end of a push rod 3 is inserted into the hole, and the moving end of the push rod 3 is in contact with the parking lock 4 and is used for pushing the parking lock 4 to rotate; a return spring is arranged on the parking lock 4 and continuously gives a force to the parking lock 4 away from the parking ratchet wheel 5; when the push rod 3 moves rightwards, the conical surface of the moving end of the push rod 3 forces the parking lock 4 to rotate upwards and is inserted into the parking ratchet wheel 5, when the push rod moves leftwards, the conical surface of the moving end of the push rod 3 leaves the parking lock 4, and the parking lock 4 moves downwards under the action of the return spring and leaves the parking ratchet wheel.

Preferably, the first driving device is a first motor 9 or a cylinder lever device 8; the second driving device is a second motor 10;

as shown in fig. 1, a pulley device 6 is connected to an output shaft of the first motor 9, and the pulley device 6 is used for rotating the parking ratchet 5; the utility model discloses well belt pulley device 6 comprises action wheel 61 from driving wheel 62 and drive belt 63, is greater than action wheel 61 diameter from driving wheel 62 diameter to increase the moment of torsion that action wheel 61 transmitted, thereby reduce the requirement to the first motor 9 output torque. The driven wheel 62 is provided with a torque sensor for detecting the torque applied to the driven wheel to monitor and control the torque applied to the parking ratchet wheel 5.

Preferably, the parking ratchet wheel 5 is fixed on the rack support through a support frame, the parking ratchet wheel 5 is detachably connected with the first motor 9, if a static strength test needs to be performed on the parking ratchet wheel 5 or the parking lock 4, the first motor 9 and the belt pulley device 6 can be replaced by an air cylinder lever device 8 to provide larger torque, and the specific scheme is shown in fig. 2.

The cylinder lever device 8 is composed of a lever 81 fixedly connected with the parking ratchet wheel 5 and cylinders 82 connected with two ends of the lever 81, and when the cylinders 82 at two ends exert forces in opposite directions on the lever 81, a large torque can be provided for the parking ratchet wheel 5 for static strength experiments. The torque may be adjusted by adjusting the air pressure into the cylinder 82.

Preferably, a connecting hole is formed in the middle line of the lever 81, a rotating shaft is welded on the parking ratchet wheel 5, the tail end of the rotating shaft is matched with the connecting hole, and the rotating shaft is inserted into the connecting hole of the lever 81 to realize the connection between the parking ratchet wheel 5 and the lever 81.

Preferably, in consideration of the process cost of the rotating shaft matched with the rotating shaft, a section of the rotating shaft inserted into the connecting hole is set to be in a shape of a part of arc surface cut off from the cylindrical shaft, and the shape of the connecting hole is adapted to the rotating shaft.

Preferably, when a static strength experiment needs to be performed, the first motor 9 is replaced by the above cylinder lever device, the cylinders 82 at the two ends of the lever are inflated, air pressure entering the cylinders 82 is controlled, the two cylinders 82 apply forces with the same magnitude and opposite directions to the lever 81, so that the lever 81 can apply a larger torque to the parking ratchet wheel 5, and then the air pressure is subjected to feedback regulation through the torque detected by the torque sensor on the parking ratchet wheel 5, so that accurate regulation of the torque applied to the parking ratchet wheel 5 is realized.

As shown in fig. 4, the crank link mechanism 7 is composed of a first link 71 connected to the second motor 10, a second link 72 converting the rotational motion of the first link 71 into a swing motion, a third link 73 and a fourth link 74 transmitting the swing motion of the second link 72 to the gear shifting device 1;

one end of the first connecting rod 71 is fixedly connected with the output shaft of the second motor 10 through a flat key, and the other end of the first connecting rod is installed in a sliding groove of the second connecting rod 72 through a rolling bearing; one end of the second connecting rod 72 is connected to the rack bracket through a hinge and can rotate around a fixed point, the other end of the second connecting rod 72 is connected with the third connecting rod 73 through a hinge, and a sliding groove for allowing the bearing of the first connecting rod 7 to slide is formed in the middle of the second connecting rod 72; one end of the third connecting rod 73 is hinged with the second connecting rod 72, and the other end is hinged with the fourth connecting rod 74; one end of the fourth connecting rod 74 is hinged to the third connecting rod 73, the other end of the fourth connecting rod is provided with a long hole, and the tail end of the rotating shaft of the gear shifting device 1 is inserted into the long hole to realize the fixed connection.

Preferably, the first connecting rod 71 can be replaced by an eccentric wheel;

use the utility model provides a pair of shift and parking mechanism experimental apparatus tests, and concrete step is as follows:

when carrying out the parking experiment, gearshift 1 rotates gearshift 1 around the center pin, moves about the hole drive push rod 3 of lower part, pushes away parking lock 4 in 5 tooth's grooves of parking ratchet wheel, realizes the parking then carries out the parking experiment, and after the parking experiment, parking lock 4 can be deviate from in 5 tooth's grooves of parking ratchet wheel smoothly, removes P and keeps off to make gearshift 1 be in other gears except that P keeps off.

The parking experiment specifically comprises a parking lock static strength test and a parking lock impact test, and the parking experiment specifically comprises the following steps:

1) when the parking lock static strength test is carried out, the second motor 10 is closed, the first driving device is set to be the cylinder lever device 8, the gear shifting device 1 is placed in the P gear through the crank connecting rod mechanism 7, the cylinder lever device 8 is used for sequentially applying forward and reverse static limit torques to the parking ratchet wheel 5, and whether the parking lock 4 is abnormally disengaged or broken is verified.

2) When carrying out parking lock impact test, close second motor 10, set up first drive arrangement as cylinder lever means 8, arrange gearshift 1 in P through crank link mechanism 7 and keep off, use cylinder lever means 8 to exert alternating load to parking ratchet 5, carry out the impact of two directions to parking lock 4, whether the inspection parking lock 4 produces damage such as unusual crackle after assaulting certain number of times.

The method comprises the following specific steps of a gear shifting and parking system endurance test:

1) the method comprises the steps that a first driving device is set as a first motor 9, the first motor 9 and a second motor 10 are started, the operating condition of a gear shifting and parking system on a vehicle is simulated, the first motor 9 drives a parking ratchet wheel 5 to rotate, if a parking lock 4 is just positioned at the tooth top of the parking ratchet wheel 5 when a gear shifting device 1 is in a P gear, the parking ratchet wheel 5 continues to rotate until the parking lock 4 is inserted into the tooth groove of the parking ratchet wheel 5, and parking is achieved;

2) and then the second motor 10 continues to rotate, the gear shifting device 1 is sequentially switched to the R → N → D → S gear through the crank link mechanism 7, the push rod 3 is driven to move to enable the parking lock 4 to be separated from the parking ratchet wheel 5, so that the P gear is separated, the duration of the parking lock 4 in the P gear and the gear shifting frequency can be controlled by adjusting the rotating speeds of the second motor 10 and the first motor 9, so that durability tests under different working conditions are realized, and whether the abrasion of all parts is within a normal range or not is checked after a certain number of times.

When a shift and parking system endurance test is performed, the second motor 10 starts to rotate, the crank link mechanism 7 connected with the second motor 10 converts the rotation motion of the second motor 10 into the reciprocating swing of the gearshift device 1, the gearshift device 1 is driven to sequentially perform gear shifting of P → R → N → D → S → D → N → R → P, and after the gear shifting, the elastic self-locking device 2 self-locks the gear to prevent gear disengagement.

Claims

1. The utility model provides a shift and parking mechanism experimental apparatus, its characterized in that, is including setting up first drive arrangement and the second drive arrangement on rack support, first drive arrangement is used for being connected with parking ratchet (5) and drives parking ratchet (5) and rotate, the second drive arrangement is connected with the one end of crank link mechanism (7), the other end and the gearshift (1) of crank link mechanism (7) are connected, be connected with push rod (3) on gearshift (1), the removal end and the parking lock (4) contact of push rod (3) are used for making parking lock (4) remove and insert parking ratchet (5) in and realize the parking.

2. A gear and park mechanism test device according to claim 1, wherein the first drive means is a first electric motor (9) or a cylinder lever arrangement and the second drive means is a second electric motor (10).

3. A gear shift and parking mechanism test device according to claim 2, wherein the output shaft of the first motor (9) is connected with the driving wheel (61) of the pulley device (6), the driven wheel (62) of the pulley device (6) is connected with the parking ratchet wheel (5), and the diameter of the driven wheel (62) of the pulley device (6) is larger than that of the driving wheel (61).

4. A gear shift and park mechanism test device according to claim 1, wherein the first drive means is removably connected to the park ratchet (5).

5. The experimental device for the shifting and parking mechanism is characterized in that the cylinder lever device comprises a lever (81) and a cylinder (82), the lever (81) is arranged on the parking ratchet wheel (5), and two ends of the lever (81) are respectively provided with the cylinder (82).

6. The experimental device for the gear shifting and parking mechanism is characterized in that a connecting hole is formed in the lever (81), a rotating shaft matched with the connecting hole is arranged on the parking ratchet wheel (5), and the rotating shaft is inserted into the connecting hole of the lever (81) and used for connecting the parking ratchet wheel (5) with the lever (81).

7. The experimental device for the gear shifting and parking mechanism is characterized in that the crank-link mechanism (7) comprises a first link (71), a second link (72), a third link (73) and a fourth link (74), wherein one end of the first link (71) is connected with an output shaft of the second driving device through a flat key, a sliding groove is formed in the second link (72), and the other end of the first link (71) is installed in the sliding groove of the second link (72) through a rolling bearing; one end of the second connecting rod (72) is fixed on the rack support, the other end of the second connecting rod is connected with one end of the third connecting rod (73), the other end of the third connecting rod (73) is hinged with one end of the fourth connecting rod (74), the other end of the fourth connecting rod (74) is provided with a long hole, and the tail end of a rotating shaft of the gear shifting device (1) is inserted into the long hole to realize the fixed connection.

8. A gear shift and park mechanism experiment device according to claim 7, characterized in that the first connecting rod (71) is replaced by an eccentric.