CN208588553U - The endurance testing device of damper piston unit - Google Patents
The endurance testing device of damper piston unit Download PDFInfo
- Publication number
- CN208588553U CN208588553U CN201821135662.XU CN201821135662U CN208588553U CN 208588553 U CN208588553 U CN 208588553U CN 201821135662 U CN201821135662 U CN 201821135662U CN 208588553 U CN208588553 U CN 208588553U
- Authority
- CN
- China
- Prior art keywords
- piston unit
- force
- testing device
- endurance testing
- damper piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a kind of endurance testing devices of damper piston unit, comprising: testboard；The vibration excitor being mounted on the testboard；The piston unit fixing tool being mounted on the testboard；With the force snesor of vibration excitor linkage；The force application part of feedback force is conducted with tested piston unit phase separation under use state and to the force snesor.The endurance testing device of the utility model can individually test damper piston unit, be acted between force snesor and the core valve of shock absorber piston unit by the force application part being separately provided, structure is simple, it tests easy for installation, fringe cost is low, reliable operation, promotes and applies convenient for engineering.
Description
Technical field
The utility model relates to measure the field of test technology, more particularly to the service life for detecting damper piston unit
Test device.
Background technique
Hydraulic buffer is the critical component on rail vehicle, and main function is decaying from track irregularity bring
Random vibration and taking turns in S move the self-excited vibration of bring periodicity, and the quality of performance is directly related to the steady of vehicle operation
Qualitative and stationarity.The requirement of hydraulic buffer service life is harsh, and under conventional maintenance use condition, urban rail railcar is minimum to be made
With 2,000,000 kilometers or 10 years of the service life (be subject to and arrive first)；4,800,000 kilometers of the minimum service life of main line railway visitor's shock absorber for vehicle or
20 years (be subject to and arrive first)；2,400,000 kilometers or 6 years of minimum service life of EMU damper (be subject to and arrive first).In vibration damping
During device is run, characteristic deviation requirement is not more than ± 20%.
Damper is generally by components groups such as pressure cylinder, sealing device, piston unit, oil storage cylinder and end connecting rods (ring)
At.4~6 damping throttle valve valves are provided on damper piston unit, wherein 2~3 be used for stretching travel, in addition 2~3
For compression travel.Each damping throttle valve is made of valve bonnet, core valve and helical spring.Valve and compression valve are stretched in reversed peace
Dress, when damper both ends are by relative motion, also relative pressure cylinder does relative motion piston unit, under the action of oil pressure, sits
The core valve fallen on helical spring is moved with respect to valve bonnet, opens the throttle orifice of valve body, oil liquid passes through the throttle orifice on piston
The other end is flowed to from one end of pressure cylinder, so that damping force is generated, the vibration for vehicle of decaying.
Core component of the piston unit as vibration absorber of rail vehicle, effectively detect its fatigue life to damper quality and
The promotion of reliability, reducing cost has crucial effect.
The life test of piston unit at present is often mounted on damper and as damper complete machine carries out service life survey
Examination, not specifically for the test device of helical spring plunger valve piston unit, the service life of test core component piston unit
When, it needs to be assembled into damper and be tested, not only process is cumbersome, but also cost and time-consuming are higher.
Utility model content
The technical issues of for independent test damper piston cell life, provide a kind of test device.
A kind of endurance testing device of damper piston unit, comprising:
Testboard；
The vibration excitor being mounted on the testboard；
The piston unit fixing tool being mounted on the testboard；
With the force snesor of vibration excitor linkage；
The force application part of feedback force is conducted with tested piston unit phase separation under use state and to the force snesor.
The utility model additionally provides several embodiments, but is not intended as the additional qualification to above-mentioned overall plan, only
It is further supplement or preferred, under the premise of no technology or logical contradiction, each example scheme can be individually for above-mentioned
Overall plan is combined, and be can also be and is combined between multiple embodiments.
The vibration excitor is positioned opposite two in one of the embodiments, piston unit fixing tool position
Between two vibration excitors.
The piston unit fixing tool includes: in one of the embodiments,
The pedestal being fixed on the testboard；
Two clamping limbs on the base are connected, are that piston unit clamps position between two clamping limbs.
The piston unit fixing tool further includes being connected between two clamping limbs, adjusting in one of the embodiments,
The regulating part of enclasping force between two clamping limbs.
Each clamping limb includes: in one of the embodiments,
The fixed part being connected with the pedestal；
Be connected the clamping part extended around piston unit clamping position with the fixed part；
For wearing the locking hole of the regulating part on clamping part.
The driving of straight reciprocating motion is provided in the shell and vibration excitor of the force snesor in one of the embodiments,
Part is fixedly connected；The force sensing element of the force snesor and the force application part offset cooperation.
It is additionally provided in one of the embodiments, fixed to limit force application part position with the outer shell phase of the force snesor
Transition tool.
In one of the embodiments, the shell opposite sides of the force snesor threadably respectively with the driving
Part is connected with transition tool.
The transition tool includes: in one of the embodiments,
The support being connected with the shell of the force snesor；
The mounting hole for accommodating and fixing on the support the force application part is set.
The force application part is rod-shaped, the power of force application part one end and the force snesor in one of the embodiments,
Quick element offsets, and the force application part other end is used for the cooperation that offsets with the core valve in tested piston unit.
The endurance testing device of the utility model can individually test damper piston unit, pass through the force section being separately provided
Part acts between force snesor and the core valve of shock absorber piston unit, and structure is simple, and test is easy for installation, and fringe cost is low,
Reliable operation promotes and applies convenient for engineering.
Detailed description of the invention
Fig. 1 is the perspective view of the endurance testing device of damper piston unit；
Fig. 2 is the part A enlarged drawing in Fig. 1；
Fig. 3 is the side view of the endurance testing device of damper piston unit；
Fig. 4 is the side view of tested piston unit；
Fig. 5 is the part A enlarged drawing in Fig. 4；
Fig. 6 is the perspective view of piston unit fixing tool
Fig. 7 is the side view of piston unit；
Fig. 8 is the top view of piston unit；
Fig. 9 is the perspective view of piston unit；
Figure 10 is the A-A cross-sectional view in Fig. 8.
Each label in figure are as follows: testboard 1；Vibration excitor 2a, vibration excitor 2b, actuator 21；Force snesor 3a, force snesor
3b；Transition tool 4a, transition tool 4b；Force application rod 5a, force application rod 5b；Piston unit fixing tool 6, fixed part 61, clamping part
62, piston unit clamps position 63, locking hole 64, locking hole 65；Piston unit 7, piston 71, helical spring 72, core valve 73, valve bonnet
74。
Specific embodiment
Referring to Fig. 1, Fig. 2, a kind of endurance testing device of damper piston unit of the present embodiment, including testboard 1, test
Platform 1 is played a supporting role, for carrying and installing other associated components, under the premise of proof strength and stability, to shape
It at the top of testboard 1 is supporting plane in the present embodiment, lower part is support foot, can be with root with specific structure there is no stringent limitation
Height adjustment mechanism is set in support foot bottom according to needs.
Vibration excitor is installed on testboard 1, is not itself that the present embodiment improves emphasis with regard to vibration excitor, can refer to existing
Technology is implemented, and vibration excitor can be such that the vibratory output for being swashed object acquisition certain forms and size can be used by the difference of exiting form
Electrodynamic Vibrators or fluid pressure type vibration excitor.
The quantity of vibration excitor and position should be adapted with piston unit structure to be measured, using positioned opposite in the present embodiment
Two vibration excitors, respectively vibration excitor 2a and vibration excitor 2b.Specifically using servo motor as power, i.e. structure on the whole
At Dual-Servo Motor excitation system, by using the exciting mode of Dual-Servo Motor, stretching that can simultaneously to piston unit
It is reversely tested simultaneously with compression two.
It is the piston unit fixing tool for clamping position piston unit 7 to be measured between vibration excitor 2a and vibration excitor 2b
6。
Include the actuator (such as piston rod) by offer straight reciprocating motion in each vibration excitor, is equipped on actuator
Force snesor, there are two force snesors, respectively the force snesor 3a with vibration excitor 2a linkage, and link with vibration excitor 2b
Force snesor 3b, in order to adapt to the piston unit of different sizes or type, also between piston unit 7 and corresponding force snesor
Provided with being equipped with the force application rod that is mounted on force snesor 3a between force application part, such as force snesor 3a and piston unit 7；Power
The force application rod 5b that is mounted on force snesor 3b is equipped between sensor 3b and piston unit 7, the force application rod under use state with
Core valve phase separation in piston unit 7 simultaneously conducts feedback force to force snesor.
It is itself existing component with regard to piston unit 7 to be measured referring to Fig. 3~Fig. 6, it is only for example in figure.It is living
There are two groups of damping throttle valves in plug unit 7, every group two, two groups of damping throttle valves are circumferentially-spaced to be alternately arranged, visible in figure
There are piston 71, helical spring 72, core valve 73, valve bonnet 74, difference group damping 73 court of throttle valve core valve in each damping throttle valve
To opposite, and above-mentioned two vibration excitors are respectively corresponded towards identical one group of damping throttle valve.
Referring to Fig. 7~Fig. 9, under use state, actuator (such as actuator 21 in vibration excitor 2a) court of each vibration excitor
Force sensor is installed to one end of piston unit 7, it can be using being threadedly engaged or the mounting means such as fastener.
One end of force snesor 3a towards piston unit 7 is equipped with the transition tool fixed with the outer shell phase of force snesor 3a
4a, similarly one end of force snesor 3b towards piston unit 7 is equipped with the transition tool fixed with the outer shell phase of force snesor 3b
4b。
By taking transition tool 4a as an example, cooperate with the outer casing screw of force snesor 3a, being threadedly engaged position can be considered support, branch
Seat shape does not limit strictly, is arranged mounting hole on the support, and force application rod 5a is fixed on peace using the forms such as being threadedly engaged and plug
It fills in hole, and keeps constant with the relative position of transition tool 4a；Similarly, transition tool 4b is equipped with force application rod by mounting hole
5b。
Certainly for same transition tool, the core of the force application rod quantity of institute's grafting and position and 7 corresponding side of piston unit
Valve matches.Force sensing element in force application rod one end and force snesor far from piston unit 7 offsets, and force snesor is quick by power
The position of element or deformation obtain and export electric signal.
The core valve of piston unit of different shapes or different shape quantity can be adapted to extensively by the way that force application part is arranged, it must
Also replaceable force application part or transition tool when wanting.
In conjunction with Figure 10, piston unit fixing tool 6 is for gripping tested piston unit 7, piston unit regular worker
Dress includes the pedestal being fixed on testboard and two clamping limbs being connected on pedestal；It is piston unit between two clamping limbs
Clamp position 63.
In other embodiments, pedestal can be structure as a whole or a part of region of two clamping limbs with two clamping limbs
It is considered as pedestal to be directly anchored on testboard.It can be using integrated or separately structure between two clamping limbs.
By taking a wherein clamping limb as an example, including the fixed part 61 being connected with pedestal, fixed part 61 has strip-shaped hole, can be appropriate
Installation site is adjusted, convenient for the size of preconditioning piston unit clamping position, is pressed from both sides with 61 integral structure of fixed part and around piston unit
Holding position 63 to extend is clamping part 62.
It is arc in the middle part of clamping part 62, cooperates with piston unit peripheral shape, single clamping limb semi-surrounding piston unit, two
A clamping limb holds piston unit tightly after surrounding.
Further to adjust enclasping force, 62 both ends of clamping part are respectively equipped with locking hole 64, locking hole 65, two clamping limb positions
The tie down screw that can be worn between corresponding locking hole as regulating part is set, is reduced because clamping limb deformation bring loosens,
Guarantee the accuracy of test result.
When assembling or test, first force snesor is connected on the actuator of corresponding side vibration excitor, recycles transition tool
Force application rod is connected with corresponding force snesor, pre-placing piston unit, then adjusts piston on piston unit fixing tool
The angle of unit, so that force application rod and the cooperation of the core valve of piston unit two sides, finally by piston unit fixing tool piston
Unit is fixed, and the test of vibration excitor row is then started, and force snesor can export corresponding signal according to feedback force.
For the subsequent processing of force snesor institute output signal, emphasis is not improved, can be implemented according to the prior art, this reality
The endurance testing device of example is applied using displacement-control mode, excitation spectrum is sinusoidal wave spectrum, passes through force snesor reality in test process
When acquisition core valve on feedback force value, when feed back force degradation or it is abnormal when, can judge the failure mode of piston rapidly
And determine the service life of piston unit.
Referring to related damper testing standard requirement, when any reversed feedback force value exceed ± the 20% of nominal value when
It waits, then it is assumed that piston unit failure.Complete 11,000,000 times test after, force value without departing from name value ± 20%, then it is assumed that should
Unit is met the requirements, off-test.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to claimed range.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection scope.Therefore, the protection scope of the utility model should be determined by the appended claims.
Claims (10)
1. a kind of endurance testing device of damper piston unit characterized by comprising
Testboard；
The vibration excitor being mounted on the testboard；
The piston unit fixing tool being mounted on the testboard；
With the force snesor of vibration excitor linkage；
The force application part of feedback force is conducted with tested piston unit phase separation under use state and to the force snesor.
2. the endurance testing device of damper piston unit as described in claim 1, which is characterized in that the vibration excitor is phase
To two of arrangement, the piston unit fixing tool is located between two vibration excitors.
3. the endurance testing device of damper piston unit as described in claim 1, which is characterized in that the piston unit is solid
Determining tooling includes:
The pedestal being fixed on the testboard；
Two clamping limbs on the base are connected, are that piston unit clamps position between two clamping limbs.
4. the endurance testing device of damper piston unit as claimed in claim 3, which is characterized in that the piston unit is solid
Determining tooling further includes the regulating part for being connected between two clamping limbs, adjusting enclasping force between two clamping limbs.
5. the endurance testing device of damper piston unit as claimed in claim 4, which is characterized in that each clamping limb includes:
The fixed part being connected with the pedestal；
Be connected the clamping part extended around piston unit clamping position with the fixed part；
For wearing the locking hole of the regulating part on clamping part.
6. the endurance testing device of damper piston unit as described in claim 1, which is characterized in that the force snesor
Shell is fixedly connected with the actuator for providing straight reciprocating motion in vibration excitor；The force sensing element of the force snesor is applied with described
Power component offsets cooperation.
7. the endurance testing device of damper piston unit as claimed in claim 6, which is characterized in that be additionally provided with and the power
The fixed transition tool to limit force application part position of the outer shell phase of sensor.
8. the endurance testing device of damper piston unit as claimed in claim 7, which is characterized in that the force snesor
Shell opposite sides is threadably connected with the actuator and transition tool respectively.
9. the endurance testing device of damper piston unit as claimed in claim 7, which is characterized in that the transition tool packet
It includes:
The support being connected with the shell of the force snesor；
The mounting hole for accommodating and fixing on the support the force application part is set.
10. the endurance testing device of damper piston unit as described in claim 1, which is characterized in that the force application part
To be rod-shaped, force application part one end and the force sensing element of the force snesor offset, and the force application part other end is used for and tested piston
Core valve in unit offsets cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821135662.XU CN208588553U (en) | 2018-07-18 | 2018-07-18 | The endurance testing device of damper piston unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821135662.XU CN208588553U (en) | 2018-07-18 | 2018-07-18 | The endurance testing device of damper piston unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208588553U true CN208588553U (en) | 2019-03-08 |
Family
ID=65541054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821135662.XU Active CN208588553U (en) | 2018-07-18 | 2018-07-18 | The endurance testing device of damper piston unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208588553U (en) |
-
2018
- 2018-07-18 CN CN201821135662.XU patent/CN208588553U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105043976A (en) | Test device for dynamically measuring fretting pair frictional coefficient during fretting fatigue process and test method | |
| CN201852741U (en) | Special fixture for bolt tension test | |
| CN106644337B (en) | A kind of vibration experiment platform for thin-wall member testing fatigue | |
| US8276464B2 (en) | Transverse load apparatus | |
| CN111006881A (en) | Novel pedal fatigue endurance test device | |
| CN208588553U (en) | The endurance testing device of damper piston unit | |
| CN103267642B (en) | A kind of motor power frame being applicable to measurement 1N to 300N thrust | |
| CN205836506U (en) | Engine suspension device | |
| CN203858105U (en) | Tensioner testing tool | |
| CN105628402B (en) | A kind of torsion beam of automobile rear axle fatigue experimental device | |
| CN207717336U (en) | Suspend the longitudinal tired bench test device of high temperature | |
| CN106289771A (en) | A kind of measurement apparatus of harmonic gear reducer engagement torsional rigidity | |
| CN105241644A (en) | Fatigue testing tool for steel plate spring | |
| CN210128827U (en) | Engine rocker arm fatigue test device | |
| CN209132094U (en) | A kind of sound device for testing stiffness of engine mounting bushing three-dimensional load | |
| CN208254934U (en) | A kind of three-point bending vibrating fatigue device with axial tension function | |
| CN113260845A (en) | Semi-automatic device for maintenance of railway pantograph based on state | |
| CN203518912U (en) | Detection device for detecting fit clearance between piston and connecting rod | |
| CN109991022B (en) | Dust endurance test rack for shock absorber | |
| CN104390753A (en) | Vibration test device of self-locking nut for bearing fastening | |
| CN105004255A (en) | Auxiliary apparatus for measuring coaxiality of double-end stud | |
| CN220188268U (en) | Anti-seismic support and hanger performance detection device | |
| CN203116722U (en) | Automobile brake clearance automatic adjusting arm free clearance testing device | |
| CN105890901A (en) | Anti-splash performance testing machine of bearing | |
| CN204807073U (en) | Measure auxiliary device of stud axiality |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |