CN114166505B - Transmission friction plate power takeoff performance test device and method - Google Patents
Transmission friction plate power takeoff performance test device and method Download PDFInfo
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- CN114166505B CN114166505B CN202111490112.6A CN202111490112A CN114166505B CN 114166505 B CN114166505 B CN 114166505B CN 202111490112 A CN202111490112 A CN 202111490112A CN 114166505 B CN114166505 B CN 114166505B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 57
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- 238000011056 performance test Methods 0.000 title claims description 21
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000013461 design Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims 1
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- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention provides a device and a method for testing the performance of a friction plate power takeoff of a speed changer, which belong to the technical field of performance testing of power takeoff, wherein the device comprises a driving motor, an input sensor, a transmission shaft, an output sensor, a load motor, an air pressure regulating mechanism and a computer; an output shaft of the driving motor is connected with an input shaft of the main test gearbox; the input sensor is arranged between the output shaft of the driving motor and the input shaft of the main test gearbox and is used for measuring the input rotating speed of the main test gearbox; the output end of the friction plate power takeoff arranged on the main test gearbox is connected with the output shaft of the load motor through a transmission shaft; the output sensor is arranged between the transmission shaft and the output shaft of the load motor and is used for measuring the output torque of the friction plate power takeoff; the air pressure regulating mechanism is connected with an air inlet of the friction plate power takeoff. The invention can determine whether the design output torque of the friction plate power takeoff is matched with the air pressure and the rotating speed of the whole vehicle.
Description
Technical Field
The invention belongs to the technical field of performance test of power take-off, and particularly discloses a device and a method for testing performance of a friction plate power take-off of a transmission.
Background
The friction plate power takeoff is an important component of a special automobile and a special automobile, and can realize gear engaging operation in the whole automobile running process. The reliability of the friction plate power takeoff is directly related to the safety performance and the comfort of the whole vehicle, and the dynamic performance and the economical efficiency of the whole vehicle are affected. The performance test of the friction plate power takeoff is an important index of the reliability of the friction plate power takeoff. Because the design output torque of the friction plate power takeoff is not matched with the air pressure and the rotating speed of the whole vehicle in the market, abnormal sound and early failure of the friction plate power takeoff occur, and the function of the friction plate power takeoff is lost, so that the whole vehicle cannot be used. In the existing industry standard Q/ZZ 11401-2013 'automobile power takeoff assembly', the performance test of the friction plate power takeoff is not specified, whether the designed output torque of the friction plate power takeoff is matched with the air pressure and the rotating speed of the whole automobile cannot be determined, and in order to solve the problem, multiple tests are required to be carried out on the whole automobile in the early stage, so that time is wasted, a plurality of friction plate power takeoff are damaged, resource waste is caused, sometimes the final result is not ideal, the service life of the friction plate power takeoff is shortened, and a plurality of difficulties are brought to the design of the friction plate power takeoff.
Disclosure of Invention
The invention aims to provide a performance test device and method for a friction plate power takeoff of a speed changer, which are used for solving the technical problem that whether the design output torque of the friction plate power takeoff is matched with the air pressure and the rotating speed of a whole vehicle cannot be determined in the prior art.
In order to achieve the above purpose, the invention provides a transmission friction plate power takeoff performance test device, which comprises a driving motor, an input sensor, a transmission shaft, an output sensor, a load motor, an air pressure regulating mechanism and a computer, wherein the driving motor is connected with the input sensor; an output shaft of the driving motor is connected with an input shaft of the main test gearbox; the input sensor is arranged between the output shaft of the driving motor and the input shaft of the main test gearbox and is used for measuring the input rotating speed of the main test gearbox; the output end of the friction plate power takeoff arranged on the main test gearbox is connected with the output shaft of the load motor through a transmission shaft; the output sensor is arranged between the transmission shaft and the output shaft of the load motor and is used for measuring the output torque of the friction plate power takeoff; the air pressure regulating mechanism is connected with an air inlet of the friction plate power takeoff; the computer is connected with the driving motor and used for controlling the rotating speed of the driving motor, is connected with the input sensor and used for receiving the measured value of the input rotating speed, is connected with the output sensor and used for receiving the measured value of the output torque, is connected with the load motor and used for controlling the torque of the load motor, and is connected with the air pressure adjusting mechanism and used for controlling the air inlet pressure of the friction plate power takeoff.
Further, the transmission shaft is connected with an output shaft of the load motor through a torque tool; the torque tool comprises a load motor connecting cylinder, an intermediate conversion disc and a transmission shaft connecting ring; the load motor connecting cylinder comprises a cylinder body and a connecting disc I and a connecting disc II which are arranged at two ends of the cylinder body; a concave spigot is arranged on the connecting disc I, and a through hole I is arranged at the outer side of the concave spigot; the output shaft of the load motor is provided with a flange, a convex spigot of the flange is matched and positioned with a concave spigot of the connecting disc I, and a through hole of the flange is connected with a through hole I of the connecting disc I through a bolt; a convex spigot is arranged on the connecting disc II, and a through hole II is arranged at the outer side of the convex spigot; the two sides of the middle conversion plate are respectively provided with a concave spigot and a convex spigot, the convex spigot is positioned in the concave spigot, a through hole III is arranged at the outer side of the concave spigot, and a through hole IV is arranged between the concave spigot and the convex spigot; the convex spigot of the connecting disc II is matched with the concave spigot of the middle conversion disc for positioning, and the through hole II is connected with the through hole III through a bolt; the transmission shaft connecting ring is provided with a through hole V, the transmission shaft connecting ring is sleeved outside the convex spigot of the middle conversion plate and is higher than or lower than the convex spigot, and the through hole V, the through hole IV and the through hole of the flange on the transmission shaft are connected through bolts.
Further, the driving motor, the input sensor, the output sensor and the load motor are all arranged on the supporting seat.
Further, the supporting seat is arranged on the base.
The invention also provides a transmission friction plate power takeoff performance test method, which is implemented based on the transmission friction plate power takeoff performance test device and comprises the following steps:
s1, determining that a friction plate power takeoff is in a neutral state, and inputting preset torque of a load motor, preset rotating speed of a driving motor and preset air pressure of an air pressure adjusting mechanism into a computer, wherein the preset torque is designed output torque of the friction plate power takeoff, and the preset rotating speed and the preset air pressure are maximum air pressure and maximum rotating speed of a vehicle in which the friction plate power takeoff is pre-installed;
s2, the driving motor operates according to a preset rotating speed to enable the main test gearbox to rotate on one shaft, at the moment, the output end of the friction plate power takeoff is in a static state, and the output torque is 0;
s3, adjusting the air pressure of the air inlet of the friction plate power takeoff to the preset air pressure, opening an air inlet valve of the friction plate power takeoff, and enabling air to enter an air cylinder in the friction plate power takeoff to establish output torque of the friction plate power takeoff;
if the transmission shaft and the load motor cannot rotate along with the output end of the friction plate power takeoff, the actual output torque of the friction plate power takeoff cannot reach the designed output torque;
s4, if the actual output torque of the friction plate power takeoff can reach the design output torque, calculating the time from the starting of the driving motor to the rotation of the transmission shaft and the load motor, and taking the time as the borrowing time of the friction plate power takeoff;
if the actual output torque of the friction plate power takeoff can not reach the designed output torque, the preset rotating speed and the preset air pressure are adjusted until the transmission shaft and the load motor can rotate along with the output end of the friction plate power takeoff, and the preset rotating speed and the preset air pressure at the moment are the rotating speed and the air pressure matched with the friction plate power takeoff.
The invention has the following beneficial effects:
the performance test device and the performance test method for the friction plate power takeoff of the transmission can judge whether the friction plate power takeoff can reach the designed output torque under the maximum air pressure and the maximum rotating speed of the whole vehicle (the vehicle is the vehicle for installing the friction plate power takeoff), so as to determine whether the designed output torque of the friction plate power takeoff is matched with the air pressure and the rotating speed of the whole vehicle, and if the friction plate power takeoff can reach the designed output torque, the force borrowing time of the friction plate power takeoff can be determined on the change relation curve of the output torque of the friction plate power takeoff along with time;
if the friction plate power takeoff can not achieve the design output torque, a group of curves of the change relation of the output torque of the friction plate power takeoff along with time can be obtained by setting different air pressures and rotating speeds, the air pressure and the rotating speed which are actually matched with the friction plate power takeoff can be obtained by analyzing the group of curves, and the model of the vehicle is determined again;
the device and the method provide a basis for matching the friction plate power takeoff with the whole vehicle, realize the quantization of parameters of the friction plate power takeoff, help to prolong the service life of the friction plate power takeoff, and provide data support for friction plate power takeoff designers.
Drawings
FIG. 1 is a schematic diagram of a transmission friction plate power take-off performance test apparatus;
FIG. 2 is a front view of a load motor coupling cartridge;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a front view of an intermediate transfer disk;
FIG. 5 is a cross-sectional view taken in the direction B-B of FIG. 4;
FIG. 6 is a front view of the drive shaft adapter ring;
FIG. 7 is a cross-sectional view taken along the direction C-C in FIG. 6;
FIG. 8 is a schematic structural view of a friction plate power take-off;
FIG. 9 is a graph of performance of a friction plate power take-off.
In the figure: 1-driving motor, 2-input sensor, 3-transmission shaft, 4-output sensor, 5-load motor, 6-computer, 7-load motor connecting cylinder, 7.1-barrel, 7.2-connection pad I, 7.3-connection pad II, 8-middle conversion pad, 9-transmission shaft go-between, 10-supporting seat, 11-base, 101-main test gearbox, 102-friction disc power takeoff, 102.1-friction disc power takeoff output flange.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides a transmission friction plate power takeoff performance test device, which comprises a driving motor 1, an input sensor 2, a transmission shaft 3, an output sensor 4, a load motor 5, an air pressure regulating mechanism and a computer 6; an output shaft of the driving motor 1 is connected with an input shaft of the main test gearbox 101; the input sensor 2 is arranged between the output shaft of the driving motor 1 and the input shaft of the main test gearbox 101 and is used for measuring the input rotating speed of the main test gearbox 101; the output end of a friction plate power takeoff 102 arranged on the main test gearbox 101 is connected with the output shaft of a load motor 5 through a transmission shaft 3; the output sensor 4 is arranged between the transmission shaft 3 and the output shaft of the load motor 5 and is used for measuring the output torque of the friction plate power takeoff 102; the air pressure adjusting mechanism is connected with an air inlet of the friction plate power takeoff 102; the computer 6 is connected with the driving motor 1 for controlling the rotation speed of the driving motor 1, is connected with the input sensor 2 for receiving the measured value of the input rotation speed, is connected with the output sensor 4 for receiving the measured value of the output torque, is connected with the load motor 5 for controlling the torque of the load motor 5, and is connected with the air pressure adjusting mechanism for controlling the air inlet pressure of the friction plate power takeoff 102.
Further, the transmission shaft 3 is connected with an output shaft of the load motor 5 through a torque tool; the torque tool comprises a load motor connecting cylinder 7, an intermediate conversion disc 8 and a transmission shaft connecting ring 9; the load motor connecting cylinder 7 comprises a cylinder 7.1, connecting discs I7.2 and connecting discs II 7.3 which are arranged at two ends of the cylinder 7.1; a concave spigot is arranged on the connecting disc I7.2, and a through hole I is arranged at the outer side of the concave spigot; the output shaft of the load motor 5 is provided with a flange, a convex spigot of the flange is matched and positioned with a concave spigot of the connecting disc I7.2, and a through hole of the flange is connected with a through hole I of the connecting disc I through a bolt; a convex spigot is arranged on the connecting disc II 7.3, and a through hole II is arranged at the outer side of the convex spigot; the two sides of the middle conversion plate 8 are respectively provided with a concave spigot and a convex spigot, the convex spigot is positioned in the concave spigot, a through hole III is arranged at the outer side of the concave spigot, and a through hole IV is arranged between the concave spigot and the convex spigot; the convex spigot of the connecting disc II 7.3 is matched with the concave spigot of the middle conversion disc 8 for positioning, and the through hole II is connected with the through hole III through bolts; the transmission shaft connecting ring 9 is provided with a through hole V, the transmission shaft connecting ring 9 is sleeved outside the convex spigot of the middle conversion plate 8, is higher than or lower than the convex spigot, performs convex-concave conversion of the same specification transmission shaft spigot, and the through holes V, IV and the through holes of the upper flange of the transmission shaft 3 are connected through bolts. The torque tool realizes that the output flange 102.1 of the friction plate power takeoff is directly connected with the load motor 5 through the transmission shaft 3, and more truly simulates the working condition of the transmission friction plate power takeoff on the whole vehicle.
Further, the driving motor 1, the input sensor 2, the output sensor 3, and the load motor 5 are all disposed on the support base 10.
Further, the support base 10 is provided on the base 11.
The embodiment also provides a transmission friction plate power takeoff performance test method, which is implemented based on the transmission friction plate power takeoff performance test device and comprises the following steps:
s1, determining that the friction plate power takeoff 102 is in a neutral state, and inputting preset torque of a load motor 5, preset rotating speed of a driving motor 1 and preset air pressure of an air pressure adjusting mechanism into a computer 6, wherein the preset torque is designed output torque of the friction plate power takeoff 102, namely output torque of a vehicle on which the friction plate power takeoff is pre-installed, and the preset rotating speed and the preset air pressure are maximum air pressure and maximum rotating speed of the vehicle on which the friction plate power takeoff is pre-installed;
s2, the driving motor 1 operates according to a preset rotating speed to enable the main test gearbox to rotate on one shaft, at the moment, the output end of the friction plate power takeoff 102 is in a static state, and the output torque is 0;
s3, adjusting the air pressure of the air inlet of the friction plate power takeoff 102 to a preset air pressure, starting to automatically record the curve of the torque of the friction plate power takeoff over time by the computer 6, opening an air inlet valve of the friction plate power takeoff 102, and enabling air to enter an air cylinder in the friction plate power takeoff 102 to establish the output torque of the friction plate power takeoff 102, wherein if the transmission shaft 3 and the load motor 5 can rotate along with the output end of the friction plate power takeoff 102, the actual output torque of the friction plate power takeoff 102 can reach the designed output torque;
if the transmission shaft 3 and the load motor 5 cannot rotate along with the output end of the friction plate power takeoff 102, the actual output torque of the friction plate power takeoff 102 cannot reach the designed output torque;
s4, if the actual output torque of the friction plate power takeoff 102 can reach the design output torque, the computer 6 calculates the time from the starting of the driving motor 1 to the rotation of the transmission shaft 3 and the load motor 5, and the time is the force borrowing time of the friction plate power takeoff 102;
if the actual output torque of the friction plate power takeoff 102 cannot reach the designed output torque, the preset rotation speed and the preset air pressure are adjusted until the transmission shaft 3 and the load motor 5 can rotate along with the output end of the friction plate power takeoff 102, the preset rotation speed and the preset air pressure at the moment are the rotation speed and the air pressure matched with the friction plate power takeoff 102, and the vehicle suitable for the friction plate power takeoff 102 is reselected according to the rotation speed and the air pressure at the moment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (4)
1. A transmission friction plate power takeoff performance test method is characterized in that the performance test method is implemented based on a transmission friction plate power takeoff performance test device;
the transmission friction plate power takeoff performance test device comprises a driving motor, an input sensor, a transmission shaft, an output sensor, a load motor, an air pressure regulating mechanism and a computer;
an output shaft of the driving motor is connected with an input shaft of the main test gearbox;
the input sensor is arranged between the output shaft of the driving motor and the input shaft of the main test gearbox and is used for measuring the input rotating speed of the main test gearbox;
the output end of the friction plate power takeoff arranged on the main test gearbox is connected with the output shaft of the load motor through a transmission shaft;
the output sensor is arranged between the transmission shaft and the output shaft of the load motor and is used for measuring the output torque of the friction plate power takeoff;
the air pressure regulating mechanism is connected with an air inlet of the friction plate power takeoff;
the computer is connected with the driving motor for controlling the rotating speed of the driving motor, is connected with the input sensor for receiving the measured value of the input rotating speed, is connected with the output sensor for receiving the measured value of the output torque, is connected with the load motor for controlling the torque of the load motor, and is connected with the air pressure regulating mechanism for controlling the air inlet pressure of the friction plate power takeoff;
the transmission friction plate power takeoff performance test method comprises the following steps:
s1, determining that a friction plate power takeoff is in a neutral state, and inputting preset torque of a load motor, preset rotating speed of a driving motor and preset air pressure of an air pressure adjusting mechanism into a computer, wherein the preset torque is designed output torque of the friction plate power takeoff, and the preset rotating speed and the preset air pressure are maximum air pressure and maximum rotating speed of a vehicle in which the friction plate power takeoff is pre-installed;
s2, the driving motor operates according to a preset rotating speed to enable the main test gearbox to rotate on one shaft, at the moment, the output end of the friction plate power takeoff is in a static state, and the output torque is 0;
s3, adjusting the air pressure of the air inlet of the friction plate power takeoff to the preset air pressure, opening an air inlet valve of the friction plate power takeoff, and enabling air to enter an air cylinder in the friction plate power takeoff to establish output torque of the friction plate power takeoff;
if the transmission shaft and the load motor cannot rotate along with the output end of the friction plate power takeoff, the actual output torque of the friction plate power takeoff cannot reach the designed output torque;
s4, if the actual output torque of the friction plate power takeoff can reach the design output torque, calculating the time from the starting of the driving motor to the rotation of the transmission shaft and the load motor, and taking the time as the borrowing time of the friction plate power takeoff;
if the actual output torque of the friction plate power takeoff can not reach the designed output torque, the preset rotating speed and the preset air pressure are adjusted until the transmission shaft and the load motor can rotate along with the output end of the friction plate power takeoff, and the preset rotating speed and the preset air pressure at the moment are the rotating speed and the air pressure matched with the friction plate power takeoff.
2. The transmission friction plate power takeoff performance test method according to claim 1, wherein the transmission shaft is connected with an output shaft of the load motor through a torque tool;
the torque tool comprises a load motor connecting cylinder, an intermediate conversion disc and a transmission shaft connecting ring;
the load motor connecting cylinder comprises a cylinder body and a connecting disc I and a connecting disc II which are arranged at two ends of the cylinder body;
a concave spigot is arranged on the connecting disc I, and a through hole I is arranged at the outer side of the concave spigot;
the output shaft of the load motor is provided with a flange, a convex spigot of the flange is matched and positioned with a concave spigot of the connecting disc I, and a through hole of the flange is connected with a through hole I of the connecting disc I through a bolt;
a convex spigot is arranged on the connecting disc II, and a through hole II is arranged at the outer side of the convex spigot;
the two sides of the middle conversion plate are respectively provided with a concave spigot and a convex spigot, the convex spigot is positioned in the concave spigot, a through hole III is arranged at the outer side of the concave spigot, and a through hole IV is arranged between the concave spigot and the convex spigot;
the convex spigot of the connecting disc II is matched with the concave spigot of the middle conversion disc for positioning, and the through hole II is connected with the through hole III through a bolt;
the transmission shaft connecting ring is provided with a through hole V, the transmission shaft connecting ring is sleeved outside the convex spigot of the middle conversion plate and is higher than or lower than the convex spigot, and the through hole V, the through hole IV and the through hole of the flange on the transmission shaft are connected through bolts.
3. The method of claim 2, wherein the drive motor, the input sensor, the output sensor, and the load motor are all disposed on the support base.
4. A method of testing the performance of a friction plate power take-off of a transmission according to claim 3, wherein the support base is disposed on the base.
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| CN202111490112.6A CN114166505B (en) | 2021-12-08 | 2021-12-08 | Transmission friction plate power takeoff performance test device and method |
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| CN202111490112.6A CN114166505B (en) | 2021-12-08 | 2021-12-08 | Transmission friction plate power takeoff performance test device and method |
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| CN114166505B true CN114166505B (en) | 2024-01-19 |
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| 一种双轴式农用车取力器特性分析与试验研究;舒红宇;陈博;刘禹智;王发权;;重庆理工大学学报(自然科学)(01);第1-6页 * |
| 取力器改进设计;吉林大学;中国优秀硕士学位论文全文数据库（电子期刊）工程科技II辑;C035-325 * |
| 取力器改进设计;张明;中国优秀硕士学位论文全文数据库工程科技II辑;C035-325 * |
| 取力器故障分析;陈秋里等;机械管理开发(第2期);第142-143页 * |
| 机械式汽车变速器综合试验台实验方法及故障诊断;张永强;实验室科学;第18卷(第1期);第52-53页 * |
| 消 防车水 力 性能检测 系 统设计与实现;朱义等;2014中国消防协会科学技术年会论文集;第48-53页 * |
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| CN114166505A (en) | 2022-03-11 |
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