CN102998117A - Gear thermal-mechanical coupling deformation loading experimental device and method - Google Patents
Gear thermal-mechanical coupling deformation loading experimental device and method Download PDFInfo
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- CN102998117A CN102998117A CN2012105489937A CN201210548993A CN102998117A CN 102998117 A CN102998117 A CN 102998117A CN 2012105489937 A CN2012105489937 A CN 2012105489937A CN 201210548993 A CN201210548993 A CN 201210548993A CN 102998117 A CN102998117 A CN 102998117A
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Abstract
The invention discloses a gear thermal-mechanical coupling deformation loading experimental device. The gear thermal-mechanical coupling deformation loading experimental device is characterized in that a driving wheel in a gear transmission pair is fixed at the right end of a rotating shaft; a rotating handle is fixedly arranged at the left end of the rotating shaft, and torque of the rotating handle is obtained through detection of a sensor; a driven wheel in the gear transmission pair is fixedly arranged at the left end of a lead screw in a lead screw nut pair which is horizontally arranged; the right end of the lead screw is connected with a connection rod; the connection rod is supported by a support, and the other end of the connection rod is hinged to a power arm of a lever; a resisting arm of the lever is fixedly connected with an involute feeler lever, the tail end of the involute feeler lever is a loading measuring head, the shape of an outline of the loading measuring head is an involute, and the loading measuring head is contacted with an involute profile of an involute gear to be detected, so that the direction of contact force is along the direction of a common normal line of the involute profile. The gear thermal-mechanical coupling deformation loading experimental device achieves exerting loading with force controllable on a gear in the static state and provides conditions for accurately simulating force deformation of a meshing gear under the operation state.
Description
Technical field
The present invention relates to machine-building and observation and control technology field, exactly be that design is a kind of for cooperating existing temperature adjustment temperature control experimental facilities, realization is carried out the device of afterburning load to involute spur gear, is used for the Thermal-mechanical Coupling distortion of involute spur gear is simulated and measured.
Background technology
At present, gear charger commonly used is to allow gear reach load and rotating speed under the actual condition, in order to find and wear-out life, fatigue lifetime, friction torque and the dynamic stability of prototype gear, still can't to measure for the distortion situation of running status lower gear.Engineering practice shows that the heating power distortion that gear produces can seriously affect its load-bearing capacity and serviceability under running status, thereby produces very large vibration, noise, makes its lost of life.
In order to simulate the heating power deformation state of gear under steady operational status, intend adopting high-precision temperature control system and force loading system, add respectively thermal force and power load to the gear under the stationary state, make itself and motion gear temperature and the power under actual condition distribute basic identical.But, in the prior art not about applying controlled dynamics load under the actual motion state and the open report of thermal force device under the gear stationary state for it.
Summary of the invention
The objective of the invention is for avoiding the existing weak point of above-mentioned prior art, a kind of gear Thermal-mechanical Coupling distortion loading experimental apparatus and experimental technique are provided, apply controlled dynamics load under the actual motion state to be implemented under the gear stationary state as it, for accurate prototype gear provides condition at the deformation under the running status.
The present invention is that the technical solution problem adopts following technical scheme:
The design feature of gear Thermal-mechanical Coupling distortion loading experimental apparatus of the present invention is: the right-hand member that the driving wheel in the gear driving pair is fixed in rotating shaft; Left end in described rotating shaft is fixedly installed turning handle, and the torque of turning handle is detected by sensor and obtains, and is shown by light-emitting diode display by change-over circuit; Engaged wheel in the described gear driving pair is fixed on the left end that is leading screw in the horizontally disposed screw pair; The right-hand member of described leading screw is connected with connecting rod; Described connecting rod is by stent support, and the other end of connecting rod and the power arm of lever are hinged; The resistance arm of described lever is connected mutually with involute urve feeler lever arm, the end of involute urve feeler lever arm is to load gauge head, the contour shape of described loading gauge head is involute urve, contact with the involute profile of tested involute gear with described loading gauge head, make the direction of contact force along the common normal direction of involute profile.
The design feature of gear Thermal-mechanical Coupling distortion loading experimental apparatus of the present invention also is: loading gauge head and tested involute gear are positioned at and are on the horizontally disposed experiment porch.
The experimental technique of gear Thermal-mechanical Coupling distortion loading experimental apparatus of the present invention is to carry out as follows: shake turning handle, by gear driving pair, leading screw, connecting rod, the lever that is consisted of by rotating shaft, driving wheel and engaged wheel, and the successively transmission of involute urve feeler lever arm, the involute urve gauge head is contacted with the involute profile of tested gear, the direction of contact force is along the common normal direction of involute profile, the size of the afterburning load of described swinging handle is obtained by sensor and change-over circuit, and shows in real time.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention utilizes gear drive, connecting rod and leverage that tested involute gear is applied power load, the rotation of handle is converted into the movement of lever, realization is converted into power with moment, and realize the demonstration of dynamics load with sensor and change-over circuit, realized in the load that applies the controlled dynamics under the actual motion state under the gear stationary state for it, provide condition for accurately simulating meshing gear at the force deformation under the running status;
2, the present invention is its action line direction and perpendicular to contact Tooth for the stress point that guarantees gear, designed the loading gauge head and be shaped as involute profile, simultaneously by the chain connection of connecting rod, realized loading and unloading, the size that while screw pair lockable power is carried, the controllability that assurance power is carried;
3, the present invention is simple in structure, and is easy to operate, cooperates temperature control system, can realize the Thermal-mechanical Coupling deformation simulative to tested gear, thereby by displacement measurement system, measures the Thermal-mechanical Coupling distortion.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the A of Fig. 1 is to the view partial enlarged drawing;
Number in the figure: 1 handle, 2 sensors, 3 rotating shafts, 4a driving gear, 4b follower gear, 5a leading screw, 5b feed screw nut, 6 connecting rods, 7 supports, 8 levers, 9a involute urve feeler lever, 9b involute urve gauge head, 10 tested involute gears, 11 experiment porchs.
Embodiment
Referring to Fig. 1, the structure of present embodiment middle gear Thermal-mechanical Coupling distortion loading experimental apparatus is set to:
As depicted in figs. 1 and 2, the resistance arm of the lever 8 in the present embodiment is connected mutually with involute urve feeler lever arm 9a, the end of involute urve feeler lever arm is to load gauge head 9b, the contour shape that loads gauge head 9b is involute urve, contact with the involute profile of tested involute gear 10 to load gauge head 9b, make the direction of contact force along the direction of the common normal a of involute profile; Loading gauge head 9b and tested involute gear 10 are positioned at and are on the horizontally disposed experiment porch 11.
In the implementation, turning handle is selected traditional mechanical feed handwheel, pastes strain-gauge transducer in rotating shaft, and the moment that the sensing turning handle transmits shows the dynamics load that is carried on the involute gear by change-over circuit.
Driving gear 4a in the gear driving pair is standard Involute spur gear, parameter: m=2, and z1=38 is connected with rotating shaft by flat key; The parameter of driven gear 4b: m=2, z2=76,7 grades of accuracy of gear grades.
Screw pair is ball-screw, accuracy class C3, and the active length of leading screw is 20cm, helical pitch 6mm, raceway hardness HRC=58.
The ratio of the power arm of lever and resistance arm is 3:2.
Experimental technique: driven the rotation of rotating shaft 3 by turning handle 1, further driven wheel secondary motion, drive leading screw 5a from side, rotation is converted to moving horizontally of connecting rod 6, further drive lever 8 by hinge and rotate around fulcrum, thereby involute urve gauge head 9b is contacted with the involute profile of tested involute gear 10, the direction of contact force is along the direction of the common normal a of involute profile, the size of the afterburning load on the turning handle 1 is obtained by sensor 2 and change-over circuit, and shows in real time.
Main part of the present invention can be placed in the temperature-controlled cabinet, be that rotating shaft, gear driving pair, screw pair, connecting rod, lever and gauge head are fixed on the interior worktable of temperature control box by base and support, load operation and reading device, be that handle, sensor conversion circuit and light-emitting diode display partly are arranged on outside the temperature-controlled cabinet, cooperate the variation of temperature, can realize the stationary state lower gear is loaded respectively thermal force and power load, be implemented in the heating power deformation state of simulation gear under steady operational status in the laboratory, control effectively, load and unload carried convenient.
Claims (3)
1. gear Thermal-mechanical Coupling distortion loading experimental apparatus is characterized in that: the right-hand member that the driving wheel in the gear driving pair (4a) is fixed in rotating shaft (3); Left end in described rotating shaft (3) is fixedly installed turning handle (1), and the torque of turning handle (1) is detected by sensor (2) and obtains, and is shown by light-emitting diode display by change-over circuit; Engaged wheel in the described gear driving pair (4b) is fixed on the left end that is leading screw in the horizontally disposed screw pair (5a); The right-hand member of described leading screw (5a) is connected with connecting rod (6); Described connecting rod (6) is supported by support (7), and the power arm of the other end of connecting rod (6) and lever (8) is hinged; The resistance arm of described lever (8) is connected mutually with involute urve feeler lever arm (9a), the end of involute urve feeler lever arm is to load gauge head (9b), the contour shape of described loading gauge head (9b) is involute urve, contact with the involute profile of described loading gauge head (9b) with tested involute gear (10), make the direction of contact force along the common normal direction of involute profile.
2. gear Thermal-mechanical Coupling according to claim 1 and 2 is out of shape load testing machine, it is characterized in that: loading gauge head (9b) is positioned at tested involute gear (10) and is on the horizontally disposed experiment porch (11).
3. the experimental technique of a gear Thermal-mechanical Coupling claimed in claim 1 distortion loading experimental apparatus, it is characterized in that: shake turning handle (1), by by rotating shaft (3), the gear driving pair that driving wheel (4a) and engaged wheel (4b) consist of, leading screw (5a), connecting rod (6), lever (8), and the successively transmission of involute urve feeler lever arm (9a), involute urve gauge head (9b) is contacted with the involute profile of tested gear (10), the direction of contact force is along the common normal direction of involute profile, the size of the afterburning load of described swinging handle (1) is obtained by sensor (2) and change-over circuit, and shows in real time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105489937A CN102998117A (en) | 2012-12-17 | 2012-12-17 | Gear thermal-mechanical coupling deformation loading experimental device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105489937A CN102998117A (en) | 2012-12-17 | 2012-12-17 | Gear thermal-mechanical coupling deformation loading experimental device and method |
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| CN102998117A true CN102998117A (en) | 2013-03-27 |
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| CN2012105489937A Pending CN102998117A (en) | 2012-12-17 | 2012-12-17 | Gear thermal-mechanical coupling deformation loading experimental device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524855A (en) * | 2016-12-14 | 2017-03-22 | 江门市力泰科技有限公司 | Gear engagement detection apparatus |
| CN108896305A (en) * | 2018-08-27 | 2018-11-27 | 中国第汽车股份有限公司 | Aluminum enclosure bearing block Thermal-mechanical Coupling strain measurement system and measurement method |
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| US4962590A (en) * | 1987-08-20 | 1990-10-16 | Ambrose Wilfred G | Apparatus and method for testing parameters of involute gears and pinions |
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| US4962590A (en) * | 1987-08-20 | 1990-10-16 | Ambrose Wilfred G | Apparatus and method for testing parameters of involute gears and pinions |
| US6217421B1 (en) * | 1998-09-03 | 2001-04-17 | The Gleason Works | Method of lapping gears |
| CN1851440A (en) * | 2006-05-31 | 2006-10-25 | 长沙航空工业中南传动机械厂 | Gear-loading contact detecting machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524855A (en) * | 2016-12-14 | 2017-03-22 | 江门市力泰科技有限公司 | Gear engagement detection apparatus |
| CN108896305A (en) * | 2018-08-27 | 2018-11-27 | 中国第汽车股份有限公司 | Aluminum enclosure bearing block Thermal-mechanical Coupling strain measurement system and measurement method |
| CN108896305B (en) * | 2018-08-27 | 2024-02-27 | 中国第一汽车股份有限公司 | Thermal coupling strain measurement system and measurement method for bearing seat of aluminum shell |
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Application publication date: 20130327 |