Friction pair dynamic temperature field test method for crawler gear shift mechanism and press plate thereof

A speed change mechanism, dynamic temperature technology, applied in the direction of thermometers, thermometers with electrical/magnetic components directly sensitive to heat, measuring devices, etc., to achieve the effect of reducing heat load

Inactive Publication Date: 2011-01-26
CHINA NORTH VEHICLE RES INST
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  • Abstract
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  • Claims
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Problems solved by technology

Measuring the dynamic temperature of the tightly bonded surface under the friction-slip state is difficult to achieve with the current conventional sensor technology and testing methods

Method used

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  • Friction pair dynamic temperature field test method for crawler gear shift mechanism and press plate thereof
  • Friction pair dynamic temperature field test method for crawler gear shift mechanism and press plate thereof
  • Friction pair dynamic temperature field test method for crawler gear shift mechanism and press plate thereof

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the temperature measurement environment of the planetary transmission shifting control member: during the gear shifting process of the planetary transmission mechanism, that is, when the control member is combined, under the action of the working oil pressure, the piston 2 pushes the pressure plate 3, and then pushes the friction plate 4 and The steel sheet 5 makes it eliminate the gap and is tightly combined as a single member. Between the pressure plate 3 and the friction plate 4, and between the friction plate 4 and the steel plate 5, due to the speed difference, severe friction and slippage are generated, thereby generating friction work and causing a temperature rise of the friction surface. It is difficult to measure the dynamic temperature of the tightly bonded surface under the friction-slip ...

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Abstract

The invention relates to the technical field of trail tests, in particular to a friction pair dynamic temperature field test method for a crawler gear shift mechanism. A press plate of a controller is provided with 1.2-1.7 mm through holes, three through holes of each group are uniformly distributed along the radius direction, a super-long thermocouple temperature sensor which is a thermocouple wire particularly, is adopted to be embedded into a guide slot, and high-temperature sealant is used for fixing the thermocouple. The invention firstly solves the problems of the installation, the positioning and the signal transmission of the temperature sensor, response speed and the like of the gear shift controller. The invention also overcomes the technical difficulties that the installation and thesoldering of the thermocouple are difficult, the sensor is embrittled and can not be installed after high-temperature desoldering and sensor high-temperature calibration, high-speed spin friction causes sensor abrasion and the like; the real-time measurement of the friction pair temperature of the controller is realized, and the method has verification and instruction actions on the design of heat load reduction and improvement measures; and the method overcomes the influences of lubricating oil, high temperature, vibrations and other factors on installation conditions and temperature response speed, and can be applied to real vehicle tests.

Description

technical field [0001] The invention belongs to the technical field of testing and testing, and in particular relates to a dynamic temperature field testing method. Background technique [0002] In the process of developing the planetary transmission mechanism of the high-power integrated transmission device, as the core component to realize the power shift of the integrated transmission, the friction pair of the wet shift control member often has the problem of overheating when it is frequently combined and separated, resulting in localized friction of the friction lining. Burning or warping and cracking of the dual steel sheets due to excessive temperature gradients will cause the failure of the shift control parts and affect the work of the entire transmission system. Due to the special working environment of the planetary gearshift control parts, it is not easy to obtain the dynamic temperature of the friction surface as the basis and measurement index of the thermal loa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/04
Inventor 卜树峰许晋李洪武刘云鹏周广明吕庆军张洪彦徐宜石彦辉尹华兵赵欣源张鹤程燕潜波
Owner CHINA NORTH VEHICLE RES INST
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