CN106353112A - Wheel impact fatigue testing machine for high-speed EMU - Google Patents
Wheel impact fatigue testing machine for high-speed EMU Download PDFInfo
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- CN106353112A CN106353112A CN201610733690.0A CN201610733690A CN106353112A CN 106353112 A CN106353112 A CN 106353112A CN 201610733690 A CN201610733690 A CN 201610733690A CN 106353112 A CN106353112 A CN 106353112A
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- pendulum
- connecting rod
- hydraulic cylinder
- fixed
- bearing
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Classifications
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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
- G01M17/08—Railway vehicles
- G01M17/10—Suspensions, axles or wheels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
This Invention discloses a wheel impact fatigue testing machine for high-speed EMU. At present, there is no impact fatigue testing machine specifically designed for high-speed EMU wheels. The invention comprises a vertical clamping mechanism, horizontal clamping mechanism and a repeated impact mechanism and a workbench; the vertical clamping mechanism and horizontal clamping mechanism are available for clamping high-speed EMU wheels and fixing the high-speed EMU wheels on that workbench; the repeated impact mechanism is available for providing impact load acting on the high-speed EMU wheel. This Invention can test the service life of the high-speed EMU wheels under the action of repeated impact load. It uses gravity to load the impact force and in the process of repeated impact the pendulum can descend from equal altitudes so as to ensure that the impact force and velocity are constant and unchanged, and the required impact force can be realized by exchanging the corresponding mass blocks for easy and convenient operation.
Description
Technical field
The invention belongs to repeated impact test equipment, more particularly to one kind can carry out repeated impact test is repeated several times
EMU wheel impact fatigue testing machine.
Background technology
Train of high-speed motor train unit in the process of moving, because the reasons such as wheel flat, the low joint of track can make wheel stand
Impact loading is repeated several times, its impact fatigue characteristic need to be evaluated.At present, also maturation in domestic impact fatigue testing machine
Product, in existing fatigue machine and shock machine, fatigue machine can carry out the fatigue test of conventional test specimen, but no
Method carries out repeated impact test；And shock machine is then mainly used in single-impact test, emphatically the impact toughness of material is entered
Row measures.Although China's high ferro development in the last few years is swift and violent, the test platform related to high ferro is suitable shortage.
Content of the invention
The purpose of the present invention is the shortage for EMU wheel test platform, provides a kind of EMU wheel
Impact fatigue testing machine, this testing machine can effectively clamp EMU wheel, using gravitational load, can carry out repeated impacts
And keep constant impulsive force, and the effective tune to required impulsive force size can be realized by changing different masses of planting
Whole.
The technical solution used in the present invention is:
The present invention includes vertical clamp system, horizontal-clamping mechanism, repeated impacts mechanism and workbench；N horizontal-clamping
Mechanism is uniformly distributed along the circumference, n >=4；Described vertical clamp system is by installing plate, vertical hydraulic cylinder, adapter sleeve, V-shaped connecting rod, company
Fishplate bar, short connecting rod, long connecting rod and hold-down head composition；Described installing plate is fixing on the table；The cylinder of vertical hydraulic cylinder
Body is hinged with installing plate, and the piston rod of vertical hydraulic cylinder and adapter sleeve are threaded connection；One of adapter sleeve and V-shaped connecting rod
Arm top is hinged；Connecting plate welds on a mounting board；One end of the bottom of V-shaped connecting rod and long connecting rod is all cut with scissors with connecting plate
Connect；Another arm top of V-shaped connecting rod is hinged with one end of short connecting rod；Cut with scissors in the middle part of the other end of short connecting rod and long connecting rod
Connect；The other end of long connecting rod is hinged with hold-down head.
Described horizontal-clamping mechanism is made up of clamp jaw, horizontal hydraulic cylinder and hydraulic cylinder mounting seat；Described clamp jaw
Head is arcwall face；The afterbody of clamp jaw is threaded connection with the piston rod of horizontal hydraulic cylinder；The cylinder body of horizontal hydraulic cylinder is solid
It is scheduled in hydraulic cylinder mounting seat；Hydraulic cylinder mounting seat is fixed by screws on workbench.
Described repeated impacts mechanism includes bracing frame, motor, small pulley, belt, big belt wheel, bearing spider, rotating shaft, rotation
Turning handle, pendulum shaft stool, oscillating weight axle, pendulum bearing, pendulum, slip-off preventing screw, mass and drift；Described bracing frame and electricity
Machine is each attached on workbench；Small pulley is affixed with the output shaft of motor, and is connected by belt with big belt wheel；Big belt wheel is affixed
In rotating shaft；Bearing spider is fixed on bracing frame；Described rotating shaft is bearing on bearing spider by bearing；In rotating handle
It is fixed in rotating shaft at the heart；The top of pendulum is bearing on oscillating weight axle by pendulum bearing；Impactor is fixed on pendulum top；Anti-
Releasing screw is connected with oscillating weight axle end thread, to pendulum axial limiting；Described oscillating weight axle is fixed on pendulum shaft stool, pendulum
Hammer shaft stool is fixed on bracing frame；Oscillating weight axle axle center and rotating shaft core distance are set to a, and the length of rotating handle is set to b, oscillating weight axle
The diameter of axle is set to r, and oscillating weight axle axle center and Impactor outer end threshold value are set to c, then b/+r ＜ a ＜ b/+c；Two pieces of masses pass through
Studs is symmetrically mounted on pendulum bottom；Described drift is threaded connection with pendulum bottom.
Described workbench is made up of the worktable support post of workbench flat board and support works platform flat board.
Described vertical hydraulic cylinder, horizontal hydraulic cylinder and motor are by controller control.
The invention has the benefit that
1st, the present invention can test service life under repeated impact effect for the EMU wheel；
2nd, the present invention utilize gravitational load impulsive force, can ensure during repeated impacts pendulum etc. height accommodate it is ensured that impulsive force,
Impact velocity invariable；
3rd, the present invention can realize required impulsive force by exchanging corresponding mass, simple and convenient；
4th, the rod member of the present invention reduces the impact to vertical hydraulic cylinder radial direction for the impulsive force, particularly short connecting rod and V-shaped
The comprehensive function of connecting rod, effectively extends the life-span of vertical hydraulic cylinder；
5th, the present invention is with low cost, takes up space little, and dismounting is easily it is easy to keep in repair.
Brief description
Fig. 1 is a side isometric view of the present invention；
Fig. 2 is another side isometric view of the present invention；
Fig. 3 is the axonometric chart of vertical clamp system in the present invention；
Fig. 4 is the schematic diagram of mechanism of vertical clamp system in the present invention；
Fig. 5 is the axonometric chart of horizontal-clamping mechanism in the present invention；
Fig. 6 is the axonometric chart of repeated impacts mechanism in the present invention；
Fig. 7 is the partial enlarged drawing of repeated impacts mechanism in the present invention；
Fig. 8 is the schematic diagram of mechanism of repeated impacts mechanism in the present invention.
In figure: 1, worktable support post, 2, vertical clamp system, 2-1, installing plate, 2-2, vertical hydraulic cylinder, 2-3, connection
Set, 2-4, V-shaped connecting rod, 2-5, connecting plate, 2-6, short connecting rod, 2-7, long connecting rod, 2-8, hold-down head, 3, horizontal-clamping machine
Structure, 3-1, clamp jaw, 3-2, horizontal hydraulic cylinder, 3-3, hydraulic cylinder mounting seat, 4, EMU wheel, 5, repeated impacts machine
Structure, 5-1, bracing frame, 5-2, motor, 5-3, small pulley, 5-4, belt, 5-5, big belt wheel, 5-6, bearing spider, 5-7, rotating shaft,
5-8, rotating handle, 5-9, pendulum shaft stool, 5-10, oscillating weight axle, 5-11, pendulum bearing, 5-12, pendulum, 5-13, slip-off preventing spiral shell
Nail, 5-14, mass, 5-15, drift, 6, workbench flat board.
Specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As illustrated in fig. 1 and 2, EMU wheel impact fatigue testing machine, by controller, vertical clamp system 2, level
Clamp system 3, repeated impacts mechanism 5 and workbench composition；Four horizontal-clamping mechanisms 3 are uniformly distributed along the circumference；Workbench is by working
The worktable support post 1 of platform flat board 6 and support works platform flat board 6 forms.Controller controls the vertical hydraulic pressure of vertical clamp system
The horizontal hydraulic cylinder 3-2 action of cylinder 2-2 and horizontal-clamping mechanism, thus clamping or unclamping EMU wheel 4, and controls weight
The motor 5-2 start and stop of multiple beater mechanism 5.
As shown in Figures 3 and 4, vertical clamp system 2 is connected by installing plate 2-1, vertical hydraulic cylinder 2-2, adapter sleeve 2-3, V-shaped
Bar 2-4, connecting plate 2-5, short connecting rod 2-6, long connecting rod 2-7 and hold-down head 2-8 composition；Installing plate 2-1 is fixed by screw
On workbench flat board 6；The cylinder body of vertical hydraulic cylinder 2-2 is hinged with installing plate 2-1, the piston rod of vertical hydraulic cylinder 2-2 and company
Female connector 2-3 is threaded connection；Adapter sleeve 2-3 is hinged with an arm top of V-shaped connecting rod 2-4；Connecting plate 2-5 is welded on peace
On dress plate 2-1；One end of the bottom of V-shaped connecting rod 2-4 and long connecting rod 2-7 is all hinged with connecting plate 2-5；V-shaped connecting rod 2-4
Another arm top hinged with one end of short connecting rod 2-6；Hinged in the middle part of the other end of short connecting rod 2-6 and long connecting rod 2-7；
The other end of long connecting rod 2-7 is hinged with hold-down head 2-8.
As shown in figure 5, horizontal-clamping mechanism 3 is by clamp jaw 3-1, horizontal hydraulic cylinder 3-2 and hydraulic cylinder mounting seat 3-3 group
Become；The head of clamp jaw 3-1 is arcwall face；The afterbody of clamp jaw 3-1 is connected by screw thread with the piston rod of horizontal hydraulic cylinder 3-2
Connect；The cylinder body of horizontal hydraulic cylinder 3-2 is fixed in hydraulic cylinder mounting seat 3-3；Hydraulic cylinder mounting seat 3-3 is fixed by screws in work
On station flat board 6.
As shown in Fig. 6,7 and 8, repeated impacts mechanism 5 is by bracing frame 5-1, motor 5-2, small pulley 5-3, belt 5-4, big
Belt wheel 5-5, bearing spider 5-6, rotating shaft 5-7, rotating handle 5-8, pendulum shaft stool 5-9, oscillating weight axle 5-10, pendulum bearing 5-11,
Pendulum 5-12, slip-off preventing screw 5-13, mass 5-14 and drift 5-15 composition；Bracing frame 5-1 and motor 5-2 is each attached to work
On station flat board 6；Small pulley 5-3 is affixed with the output shaft of motor 5-2, and is connected by belt 5-4 with big belt wheel 5-5；Big band
Wheel 5-5 is fixed on rotating shaft 5-7；Bearing spider 5-6 is fixed on bracing frame 5-1；Rotating shaft 5-7 is bearing in bearing by bearing and props up
On seat 5-6；The center of rotating handle 5-8 is fixed on rotating shaft 5-7；The top of pendulum 5-12 is bearing in by pendulum bearing 5-11
On oscillating weight axle 5-10；Impactor is fixed on pendulum 5-12 top；Slip-off preventing screw 5-13 is connected with oscillating weight axle 5-10 end thread,
To pendulum 5-12 axial limiting, prevent pendulum 5-12 from coming off；Oscillating weight axle 5-10 is fixed on pendulum shaft stool 5-9 by screw,
Pendulum shaft stool 5-9 is fixed on bracing frame 5-1；Oscillating weight axle 5-10 axle center and rotating shaft 5-7 axle center distance are set to a, rotating handle 5-8
Length be set to b, the oscillating weight axle 5-10 diameter of axle is set to r, and oscillating weight axle 5-10 axle center and Impactor outer end threshold value are set to c, then b/2
+ r ＜ a ＜ b/2+c, ensures Impactor and Impactor outer end Intermittent Contact；Two pieces of mass 5-14 are symmetrically pacified by studs
It is contained in pendulum 5-12 bottom；Drift 5-15 and pendulum 5-12 bottom is threaded connection, and is directed at EMU wheel 4.
The operation principle of this EMU wheel impact fatigue testing machine:
First suitable mass 5-14 is installed according to the impulsive force size that test needs, then by motor train unit
Wheel 4 is placed on workbench flat board 6, then passes through controller and controls vertical clamp system 2 and horizontal-clamping mechanism 3, makes vertical
Clamp system 2 and horizontal-clamping mechanism 3 clamping EMU wheel 4.Motor 5-2 is started by controller, motor 5-2 passes through
Tape handler (small pulley 5-3, belt 5-4 and big belt wheel 5-5) drives rotary shaft 5-7, thus it is clockwise that handle 5-8 is rotated
Rotation, when rotating handle 5-8 is contacted with Impactor, drives pendulum 5-12 to rotate around oscillating weight axle 5-10, when pendulum 5-12 goes to necessarily
Highly, rotating handle 5-8 and Impactor depart from, pendulum 5-12 due to the action of gravity of mass 5-14 the bottom so that being arranged on
Drift 5-15 impact high speed EMUs wheel 4 on pendulum 5-12, rebounds after drift 5-15 impact high speed EMUs wheel 4, this
When the rotating handle 5-8 other end contact with Impactor again, drive pendulum 5-12 rotates up around oscillating weight axle 5-10, to certain height,
Rotating handle 5-8 is departed from Impactor, the pendulum 5-12 bottom, drift 5-15 impact high speed EMUs wheel 4.Rotating handle 5-8 circulates
Rotate, drift 5-15 just periodic shock EMU wheel 4, until EMU wheel 4 damages.
Claims (3)
1. EMU wheel impact fatigue testing machine, including vertical clamp system, horizontal-clamping mechanism, repeated impacts mechanism
With workbench it is characterised in that: n horizontal-clamping mechanism is uniformly distributed along the circumference, n >=4；Described vertical clamp system is by installing
Plate, vertical hydraulic cylinder, adapter sleeve, V-shaped connecting rod, connecting plate, short connecting rod, long connecting rod and hold-down head composition；Described peace
Dress plate is fixing on the table；The cylinder body of vertical hydraulic cylinder is hinged with installing plate, and the piston rod of vertical hydraulic cylinder is led to adapter sleeve
Cross threaded；Adapter sleeve is hinged with an arm top of V-shaped connecting rod；Connecting plate welds on a mounting board；V-shaped connecting rod
One end of bottom and long connecting rod is all hinged with connecting plate；Another arm top of V-shaped connecting rod is hinged with one end of short connecting rod；
Hinged in the middle part of the other end of short connecting rod and long connecting rod；The other end of long connecting rod is hinged with hold-down head；
Described horizontal-clamping mechanism is made up of clamp jaw, horizontal hydraulic cylinder and hydraulic cylinder mounting seat；The head of described clamp jaw
For arcwall face；The afterbody of clamp jaw is threaded connection with the piston rod of horizontal hydraulic cylinder；The cylinder body of horizontal hydraulic cylinder is fixed on
In hydraulic cylinder mounting seat；Hydraulic cylinder mounting seat is fixed by screws on workbench；
Described repeated impacts mechanism includes bracing frame, motor, small pulley, belt, big belt wheel, bearing spider, rotating shaft, rotation
Handle, pendulum shaft stool, oscillating weight axle, pendulum bearing, pendulum, slip-off preventing screw, mass and drift；Described bracing frame and motor
It is each attached on workbench；Small pulley is affixed with the output shaft of motor, and is connected by belt with big belt wheel；Big belt wheel is fixed in
In rotating shaft；Bearing spider is fixed on bracing frame；Described rotating shaft is bearing on bearing spider by bearing；The center of rotating handle
Place is fixed in rotating shaft；The top of pendulum is bearing on oscillating weight axle by pendulum bearing；Impactor is fixed on pendulum top；Anticreep
The screw that falls is connected with oscillating weight axle end thread, to pendulum axial limiting；Described oscillating weight axle is fixed on pendulum shaft stool, pendulum
Shaft stool is fixed on bracing frame；Oscillating weight axle axle center and rotating shaft core distance are set to a, and the length of rotating handle is set to b, oscillating weight axle axle
Footpath is set to r, and oscillating weight axle axle center and Impactor outer end threshold value are set to c, then b/+r ＜ a ＜ b/+c；Two pieces of masses are by double
Header stud is symmetrically mounted on pendulum bottom；Described drift is threaded connection with pendulum bottom.
2. EMU wheel impact fatigue testing machine according to claim 1 it is characterised in that: described workbench
It is made up of the worktable support post of workbench flat board and support works platform flat board.
3. EMU wheel impact fatigue testing machine according to claim 1 it is characterised in that: described vertical liquid
Cylinder pressure, horizontal hydraulic cylinder and motor are by controller control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733690.0A CN106353112B (en) | 2016-08-25 | 2016-08-25 | High-speed EMUs wheel impact fatigue testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733690.0A CN106353112B (en) | 2016-08-25 | 2016-08-25 | High-speed EMUs wheel impact fatigue testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106353112A true CN106353112A (en) | 2017-01-25 |
| CN106353112B CN106353112B (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610733690.0A Active CN106353112B (en) | 2016-08-25 | 2016-08-25 | High-speed EMUs wheel impact fatigue testing machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167386A (en) * | 2017-07-21 | 2017-09-15 | 西安建筑科技大学 | A kind of structural elements vertical load loading device and loading method |
| CN110057528A (en) * | 2019-05-17 | 2019-07-26 | 青岛科技大学 | A kind of tooth-like tire acceleration inversion percussion mechanism of curve |
| CN110553859A (en) * | 2018-05-31 | 2019-12-10 | 湖南工业大学 | Shock resistance and fatigue test device for barrier remover for train |
| CN116519252A (en) * | 2023-06-08 | 2023-08-01 | 扬州晶明科技有限公司 | Impact test device for aircraft component |
| CN117990367A (en) * | 2024-04-07 | 2024-05-07 | 山东泰扬精密轴承制造有限公司 | Bearing test mechanism and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167386A (en) * | 2017-07-21 | 2017-09-15 | 西安建筑科技大学 | A kind of structural elements vertical load loading device and loading method |
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| CN110553859A (en) * | 2018-05-31 | 2019-12-10 | 湖南工业大学 | Shock resistance and fatigue test device for barrier remover for train |
| CN110553859B (en) * | 2018-05-31 | 2024-02-27 | 湖南工业大学 | Shock resistance and fatigue experiment device for barrier remover for train |
| CN110057528A (en) * | 2019-05-17 | 2019-07-26 | 青岛科技大学 | A kind of tooth-like tire acceleration inversion percussion mechanism of curve |
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| CN117990367A (en) * | 2024-04-07 | 2024-05-07 | 山东泰扬精密轴承制造有限公司 | Bearing test mechanism and use method thereof |
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| Publication number | Publication date |
|---|---|
| CN106353112B (en) | 2019-01-15 |
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Application publication date: 20170125 Assignee: ZHEJIANG SCI-TECH UNIVERSITY SHANGYU INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Assignor: Zhejiang University of Technology Contract record no.: X2020330000077 Denomination of invention: High speed EMU wheel impact fatigue testing machine Granted publication date: 20190115 License type: Common License Record date: 20201022 |
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