CN205826281U - A kind of semifloating axle shaft rotary bending fatigue bench test device - Google Patents
A kind of semifloating axle shaft rotary bending fatigue bench test device Download PDFInfo
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- CN205826281U CN205826281U CN201620590058.0U CN201620590058U CN205826281U CN 205826281 U CN205826281 U CN 205826281U CN 201620590058 U CN201620590058 U CN 201620590058U CN 205826281 U CN205826281 U CN 205826281U
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- axle shaft
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- arm
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Abstract
This utility model relates to a kind of semifloating axle shaft rotary bending fatigue bench test device, including testing stand, frequency conversion motor, power shaft, Screw rod bearings seat, spring lower tray guide plate, T-shaped loading screw rod, loading spring, loading spring top tray, loading spring lower tray, arm of force load bearings, taper loading arm leading portion, the back segment of taper loading arm.This utility model, for analysing in depth the reason that semifloating axle shaft lost efficacy, improves the evaluation means of semifloating axle shaft, for improving semifloating axle shaft bench test industry standard accumulation test data and experience.
Description
Technical field
This utility model relates to a kind of semifloating axle shaft rotary bending fatigue bench test device, belongs to automobile test neck
Territory.
Technical background
Automobile axle shaft, according to stress, is often divided into fully floating axle and semifloating axle shaft two kinds.Actually used at vehicle
In, semifloating axle shaft load working condition is the most complicated, moment of torsion to be transmitted, and also subject to the effect of rotation moment of flexure, moment of flexure is on the one hand
From the effect of ground vertical load, the effect of the side force on the other hand born from driving wheel.Existing automobile axle shaft
In industry standard, semifloating axle shaft be only considered the impact on semiaxis fatigue life of the ground vertical load moment of flexure, the most comprehensive
The impact of the side force that consideration driving wheel of vehicle is born, does not has the special purpose test equipment of this aspect, the most yet in current industry
Lack bench test data and the experience of this respect.
Summary of the invention
The purpose of this utility model is to provide a kind of semifloating axle shaft rotary bending fatigue bench test device, for deeply
Analyze the reason that semifloating axle shaft lost efficacy, improve the evaluation means of semifloating axle shaft, for improving semifloating axle shaft bench test row
Industry standard accumulation test data and experience.
The purpose of this utility model is achieved through the following technical solutions:
A kind of semifloating axle shaft rotary bending fatigue bench test device, including testing stand, frequency conversion motor 1, power shaft 25,
Screw rod bearings seat 16, spring lower tray guide plate 22, T-shaped loading screw rod 17, loading spring 20, loading spring top tray 19, add
Carry spring lower tray 21, arm of force load bearings 12, taper loading arm leading portion 11, the back segment 9 of taper loading arm；Described testing stand
Upper table surface 24 on one end be provided with frequency conversion motor 1, the other end is provided with L-type and props up bearing 5, the output of described frequency conversion motor 1
Axle is connected by shaft coupling 26 has power shaft 25 to connect, and described power shaft 25 is through power shaft bearing 2, and power shaft bearing 2 is solid
It is scheduled on the upper table surface 24 of testing stand；The side plate 23 of and testing stand away from frequency conversion motor vertical with tested semifloating axle shaft 4 from
Being fixed with loading Screw rod bearings seat 16 and spring lower tray guide plate 22 the most successively, spring lower tray guide plate 22 offers
Pilot hole；Load and be fixed with T-shaped loading screw rod 17 below Screw rod bearings seat 16, T-shaped loading screw rod 17 is provided with pulling force and adjusts
Nut 18, is provided with loading spring 20, the two of loading spring 20 between pulling force adjusting nut 18 and spring lower tray guide plate 22
End presses up against in loading spring top tray 19 and loading spring lower tray 21, the projection of loading spring lower tray 21 lower surface
It extend in the pilot hole of spring lower tray guide plate 22；Described pulling force load bar 15 sequentially passes through loading screw rod from top to bottom
Propping up the hole in bearing 16, T-shaped loading screw rod 17, loading spring top tray 19, its one end is fixedly connected on loading spring lower tray
On 21, the other end stretches in the groove of arm of force load bearings 12；Described arm of force load bearings 12 is nested with before taper loading arm
On the tapering point of section 11；The other end of power shaft 25 is connected by one end of the tested semifloating axle shaft of shaft coupling 26 4, and tested half floats
The through hole that the other end of formula semiaxis 4 props up in bearing 5 through L-type is connected by flange is fixing with the back segment 9 of taper loading arm；Described
L-type prop up the outside of bearing 5 and be provided with tested semifloating axle shaft temperature sensor 8, be used for monitoring tested semifloating axle shaft 4 bearing
The temperature at place；Temperature sensor 13 at arm of force load bearings it is provided with, for monitoring force on the upper table surface 24 of described testing stand
Temperature at arm load bearings 12；It is provided with force transducer 14 on described pulling force load bar 15, is used for monitoring semiaxis sample 4 institute
The moment of flexure born；It is provided with speed probe 28, turning for tested semifloating axle shaft 4 on the upper table surface 24 of described testing stand
Speed；It is fixed with, on the output shaft of described frequency conversion motor 1, the gear ring 29 that tests the speed, for recording the rotating cycle of semiaxis.
As the preferred technical scheme of this utility model: offer on the upper table surface 24 of described test for ensureing input
Bearing block 2 and L-type prop up the guide-localization groove 27 of the axiality of bearing 5.
As the preferred technical scheme of this utility model: described L-type is propped up the outside of bearing 5 and is fixedly connected with transition supporting
Plate 6, transition supporting plate 6 connects support plate 7.
As optimal technical scheme of the present utility model: be also equipped with on the taper surface of described taper loading arm leading portion 11
Safety device 10, safety device 10 is fixed on testing stand upper table surface 24, the inner conical face of safety device 10
The gaps such as the taper surface holding with taper loading arm leading portion 11.
The beneficial effects of the utility model are:
1. in the device that this utility model provides, power shaft bearing, L-type are propped up the transition supporting plate in bearing, a bearing and prop up
The installation site of board ensure that semifloating axle shaft is coaxial with the outfan of frequency conversion motor, and it is additional curved that the system that eliminates produces
Square, improves system accuracy.
2. the device that this utility model provides have employed two-part taper loading arm, enters the semiaxis of different structure and size
When row test prepares, it is only necessary to change the taper arm of force back segment of simple in construction, save the test preparatory period, improve efficiency.Protection
The inner conical feature of device, and the gap such as between preventer inner conical surface and loading arm, when specimen breakdown, can play in time
Protective effect reliably.
3. this utility model provides the spring-loaded manner of device and arrangement form, meet semifloating axle shaft and rotate curved
The technical conditions of bent fatigue endurance test, it is contemplated that helical compression spring is the difference of its service load scope drawing, under pressure, with
And the requirement that testing stand space is arranged, and use compression spring to apply the way of pulling force, it is ensured that and load precision, and load is steady
Fixed, simple in construction, low cost.
4. the device that this utility model provides can monitor at the temperature at semiaxis sample bearing and testing stand loading arm
The temperature of bearing, can be controlled the rotating speed of frequency conversion motor, record the number of revolutions of semiaxis simultaneously by the TT&C system of testing stand,
As lifetime results value.
In sum: this utility model can cover minicar and the examination of passenger car semifloating axle shaft rotary bending fatigue stand
Test requirement, because it considers ground vertical support moment of flexure and ground attachment moment of flexure to the semifloating axle shaft rotary bending fatigue life-span
Impact, there is loading moment adjustable, precision height, simple in construction, device fabrication and operating cost is low, easy to operate and operating
Safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model semifloating axle shaft rotary bending fatigue bench test device.
Fig. 2 is the sectional view of this utility model semifloating axle shaft rotary bending fatigue bench test device.
In figure: 1: frequency conversion motor；2: power shaft bearing；3: TT&C system；4: semiaxis sample；5:L type props up bearing；6: transition
Support plate；7: support plate；8: tested semifloating axle shaft bearing temperature sensor；9: taper arm of force back segment；10: security protection fills
Put；11: taper arm of force leading portion；12: arm of force load bearings；13: arm of force load bearings temperature sensor；14: force transducer；15:
Pulling force load bar；16: load Screw rod bearings seat；17: load screw rod；18: pulling force adjusting nut；19: loading spring top tray；
20: loading spring；21: loading spring lower tray；22: spring lower tray guide plate；23: testing stand side plate；24: testing stand upper
Table top；25: power shaft；26: shaft coupling；27: guide-localization groove；28: speed probe；29: test the speed gear ring.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings: as illustrated in fig. 1 and 2, and a kind of semifloating axle shaft rotates
Flexural fatigue bench test device, leads including testing stand, frequency conversion motor 1, power shaft 25, Screw rod bearings seat 16, spring lower tray
Axle is loaded to plate 22, T-shaped loading screw rod 17, loading spring 20, loading spring top tray 19, loading spring lower tray 21, the arm of force
Hold 12, taper loading arm leading portion 11, the back segment 9 of taper loading arm；On the upper table surface 24 of described testing stand, one end is provided with change
Frequently motor 1, the other end is provided with L-type and props up bearing 5, and the output shaft of described frequency conversion motor 1 is connected by shaft coupling 26 input
Axle 25 connects, and described power shaft 25 is through power shaft bearing 2, and power shaft bearing 2 is fixed on upper table surface 24；Float with tested half
The formula semiaxis 4 side plate 23 vertically and away from the testing stand of frequency conversion motor is fixed with loading Screw rod bearings seat 16 He the most successively
Spring lower tray guide plate 22, spring lower tray guide plate 22 offers pilot hole；Load and be fixed with T below Screw rod bearings seat 16
Type loads screw rod 17, and T-shaped loading screw rod 17 is provided with pulling force adjusting nut 18, and pulling force adjusting nut 18 is led with spring lower tray
Being provided with loading spring 20 between plate 22, the two ends of loading spring 20 press up against loading spring top tray 19 and load bullet
In spring lower tray 21, the projection of loading spring lower tray 21 lower surface extend in the pilot hole of spring lower tray guide plate 22；
Described pulling force load bar 15 sequentially passes through loading Screw rod bearings seat 16, T-shaped loading screw rod 17, loading spring pop-up from top to bottom
Hole on dish 19, its one end is fixedly connected in loading spring lower tray 21, and the other end stretches into the groove of arm of force load bearings 12
In；Described arm of force load bearings 12 is nested with on the tapering point of taper loading arm leading portion 11；The other end of power shaft 25 passes through
One end of the tested semifloating axle shaft of shaft coupling 26 4 connects, and the other end of tested semifloating axle shaft 4 props up leading in bearing 5 through L-type
Hole is connected by flange is fixing with the back segment 9 of taper loading arm；Described L-type is propped up the outside of bearing 5 and is provided with tested semi-floating
Semiaxis temperature sensor 8, for monitoring the temperature at tested semifloating axle shaft 4 bearing；On the upper table surface 24 of described testing stand
It is provided with temperature sensor 13 at arm of force load bearings, for monitoring the temperature at arm of force load bearings 12；Described pulling force adds
Carry and be provided with force transducer 14 on bar 15, for monitoring the moment of flexure that semiaxis sample 4 is born；The upper table surface 24 of described testing stand
On be provided with speed probe 28, for the rotating speed of tested semifloating axle shaft 4；Fix on the output shaft of described frequency conversion motor 1
Test the speed gear ring 29, for recording the rotating cycle of semiaxis.
Offer on the upper table surface 24 of described test for ensureing that power shaft bearing 2 and L-type prop up the axiality of bearing 5
Guide-localization groove 27.
Described L-type is propped up the outside of bearing 5 and is fixedly connected with transition supporting plate 6, and transition supporting plate 6 connects support plate 7,
The tested semifloating axle shaft of the described other end 4 sequentially passes through L-type and props up bearing 5, transition supporting plate 6 and support plate 7, loads with taper
Arm back segment 9 connects by flange is fixing.Propping up bearing 5 due to L-type and ensure supporting rigidity, size is bigger, support plate 7 and semiaxis sample
The bearing block of product 4 is fixing to be connected, and different semiaxis sample 4 bearing block connected modes and size are different from, for convenience stand examination
Testing preparation, propping up in L-type increases a size and the biggest transition supporting plate 6 of rigidity between bearing 5 and support plate 7,
So when converting the kind of semiaxis sample 4, it is only necessary to prepare a size and the less support plate 7 of rigidity can be carried out newly
The rotary bending fatigue test of kind semiaxis sample 4, improves work efficiency and reduces bench test cost.
Safety device 10, safety device 10 also it is equipped with on the tapering point of described taper loading arm leading portion 11
It is fixed on testing stand upper table surface 24, the inner conical face of safety device 10 and the taper surface holding etc. of taper loading arm leading portion
Gap.Taper loading arm back segment 9 is connected with the ring flange of semifloating axle shaft sample 4, and taper loading arm back segment 9 loads with taper
Arm leading portion 11 connects, and safety device 10 covers at the smooth taper district of taper loading arm leading portion 11, safety device 10
The gap such as taper surface holding of inner conical face and taper loading arm leading portion 11, in process of the test, when tested semiaxis sample 4 occurs
During damage, due to sample together with fixture also in high speed rotating state, the sample that safety device can reliably will come off
Hold with fixture, to guarantee safety.
Work process of the present utility model is as follows: described arm of force load bearings 12 is arranged on taper loading arm leading portion 11
Front end, pulling force load bar 15 upper end is connected with arm of force load bearings 12, and pulling force load bar 15 is two-stage structure, middle attachment force
Sensor 14, reads during force transducer 14 prestrain before the test and loads force value, and in process of the test, the change of monitoring force value
Change；The lower end of pulling force load bar 15 is fixing with loading spring lower tray 21 to be connected, in order to ensure that the lower tray of loading spring 20 exists
In folding process not skewed, loading spring lower tray 21 moves only along the pilot hole of spring lower tray guide plate 21；Load
Screw rod bearings seat 16 is fixedly connected on testing stand side plate 22, and T-shaped loading screw rod 17 is fixedly mounted on loading Screw rod bearings seat 16
On, it being enclosed within outside loading spring 20 on T-shaped loading screw rod 17, the upper end of loading spring 20 is loading spring top tray 19, to drawing
When power load bar 15 applies pulling force, being screwed down pulling force adjusting nut 18, pulling force adjusting nut 18 promotes loading spring top tray
19 move down, and at this moment loading spring 20 is under pressure, and compress loading spring lower tray 21, fix with loading spring lower tray 18
About pulling force load bar 15 under tension connected, and on loading arm, produce the Moment required for process of the test, due to
Frequency conversion motor 1 is with semiaxis sample 4 at high speed rotating, and then the bearing root at semiaxis sample 4 produces the moment of flexure of an alternation
Load, the TT&C system 3 of testing stand can control the rotating speed of frequency conversion motor, record the number of revolutions of semiaxis, as the life-span simultaneously
End value.
At present, after in the quiet torsional test of semiaxis, the quiet torsion intensity reserve coefficient of semifloating axle shaft is generally than fully floating axle
Standby coefficient is big；In torsional fatigue test, the semifloating axle shaft torsional fatigue test life-span is generally high than the fully floating axle life-span, several
There is no the situation of fatigue fracture.But, the most but occurred repeatedly sending out at semifloating axle shaft bearing root
The situation of raw fracture, comprehensively analyzes, and semifloating axle shaft fracture is the result that fatigue occurs under bending superposition, particularly exists
When driving wheel of vehicle occurs to break away, moment of flexure produced by traction exceed well in the face of the vertical load vertical force of driving wheel
The moment of flexure caused.According to the actual condition of semiaxis, consider ground vertical bending moment and the effect of ground attachment moment of flexure, invention
People have developed the rotary bending fatigue life test apparatus that can apply moment of flexure to semifloating axle shaft, is used for furtheing investigate semi-floating
The contribution to its fatigue life of the semiaxis rotary bending fatigue, analyzes the reason that on market, semifloating axle shaft lost efficacy, and improves semi-floating
The evaluation means of semiaxis, for improving semifloating axle shaft bench test industry standard accumulation test data experience.
Claims (4)
1. a semifloating axle shaft rotary bending fatigue bench test device, it is characterised in that: include testing stand, pulling force load bar
(15), frequency conversion motor (1), arm of force load bearings (12), loading Screw rod bearings seat (16), loading spring top tray (19) and loading
Spring lower tray (21)；
The upper one end of the upper table surface (24) of described testing stand is provided with frequency conversion motor (1), and the other end is provided with L-type and props up bearing (5),
L-type is propped up the outside of bearing (5) and is fixedly connected with transition supporting plate (6), and transition supporting plate (6) connects support plate (7), test
Offer on upper table surface (24) for ensureing that power shaft bearing (2) and L-type prop up the guide-localization groove of the axiality of bearing (5)
(27)；
Vertical with tested semifloating axle shaft (4) and testing stand away from frequency conversion motor side (23) is fixed with the most successively
Loading Screw rod bearings seat (16) and spring lower tray guide plate (22), spring lower tray guide plate (22) offers pilot hole；Add
Carry Screw rod bearings seat (16) lower section and be fixed with T-shaped loading screw rod (17), T-shaped loading screw rod (17) is provided with pulling force adjusting nut
(18), loading spring (20), loading spring it are provided with between pulling force adjusting nut (18) and spring lower tray guide plate (22)
(20) two ends are respectively fixedly connected with in loading spring top tray (19) and loading spring lower tray (21), loading spring subiculum
The projection of dish (21) lower surface extend in the pilot hole of spring lower tray guide plate (22)；
Described pulling force load bar (15) sequentially passes through loading Screw rod bearings seat (16), T-shaped loading screw rod (17) from top to bottom, adds
Carrying the hole in spring top tray (19), its one end is fixedly connected in loading spring lower tray (21), and the other end stretches into the arm of force and adds
Carry in the groove of bearing (12)；Described arm of force load bearings (12) is nested with on the tapering point of taper loading arm leading portion (11)；
One end of tested semifloating axle shaft (4) is connected with the outfan of frequency conversion motor (1) by shaft joint (26), and the other end sequentially passes through
L-type props up bearing (5), transition supporting plate (6) and support plate (7), is connected by flange is fixing with taper loading arm back segment (9).
2. semifloating axle shaft rotary bending fatigue bench test device as claimed in claim 1, it is characterised in that: described examination
Offer on the upper table surface (24) tested for ensureing that power shaft bearing (2) and L-type prop up the guide-localization groove of the axiality of bearing (5)
(27)。
3. semifloating axle shaft rotary bending fatigue bench test device as claimed in claim 1, it is characterised in that: described
Force transducer (14) it is provided with on pulling force load bar (15).
4. semifloating axle shaft rotary bending fatigue bench test device as claimed in claim 1, it is characterised in that: described cone
Also being equipped with safety device (10) on the taper leading portion (11) of shape loading arm, safety device (10) is fixed on testing stand
Upper table surface (24) on, between the inner conical face of safety device (10) and the taper surface holding of taper loading arm leading portion (11) etc.
Gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620590058.0U CN205826281U (en) | 2016-06-17 | 2016-06-17 | A kind of semifloating axle shaft rotary bending fatigue bench test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620590058.0U CN205826281U (en) | 2016-06-17 | 2016-06-17 | A kind of semifloating axle shaft rotary bending fatigue bench test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205826281U true CN205826281U (en) | 2016-12-21 |
Family
ID=57569484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620590058.0U Withdrawn - After Issue CN205826281U (en) | 2016-06-17 | 2016-06-17 | A kind of semifloating axle shaft rotary bending fatigue bench test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205826281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017888A (en) * | 2016-06-17 | 2016-10-12 | 中国第汽车股份有限公司 | Semi-floating type half shaft rotation bending fatigue bench test device |
-
2016
- 2016-06-17 CN CN201620590058.0U patent/CN205826281U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017888A (en) * | 2016-06-17 | 2016-10-12 | 中国第汽车股份有限公司 | Semi-floating type half shaft rotation bending fatigue bench test device |
| CN106017888B (en) * | 2016-06-17 | 2018-05-18 | 中国第一汽车股份有限公司 | A kind of semifloating axle shaft rotary bending fatigue bench test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161221 Effective date of abandoning: 20180518 |
|
| AV01 | Patent right actively abandoned |