CN107202700B - A kind of train frame fatigue test board - Google Patents
A kind of train frame fatigue test board Download PDFInfo
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- CN107202700B CN107202700B CN201710375421.6A CN201710375421A CN107202700B CN 107202700 B CN107202700 B CN 107202700B CN 201710375421 A CN201710375421 A CN 201710375421A CN 107202700 B CN107202700 B CN 107202700B
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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
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The present invention provides a kind of train frame fatigue test board, comprising: pedestal, tested framework, vertical loading device, lateral loading device and positive loading device；Tested framework is set on the base；Vertical loading device is for loading downward load to tested framework；Lateral loading device is used for tested framework loaded load；Positive loading device is used for tested framework loaded load；Positive loading device, lateral loading device, vertical loading device loading direction be mutually perpendicular to.Train frame fatigue test board of the invention can specially simulate lateral force, brake force or tractive force when train frame is born vertical force, turned to.
Description
Technical field
The present invention relates to material and structural test equipment and test method technical field more particularly to a kind of train frame are tired
Labor testing stand.
Background technique
Train frame is the pith of bogie, and bogie is the key component for guaranteeing the operation of train safety and steady.
The train frame not only lateral force by vertical force, steering hour wheel pair from railway carriage, but also the traction by advance hour wheel pair
Power or the brake force for braking hour wheel pair.Therefore, it is necessary to carry out fatigue test specifically for train frame.
A kind of testing table for fatigue strength of locomotive bogie of the prior art, it is solid by bearing and bearing block in the side of rack
Determine active camshaft, active eccentric wheel is installed on active camshaft, it is solid by bearing and bearing block in the other side of rack
Determine passive camshaft, installation is by movable eccentric wheel on passive camshaft, and active camshaft is connected with driving device, bogie
Left and right wheels to being respectively placed in active eccentric wheel and by movable eccentric wheel, and plus simulation counterweight, so utilize active eccentric wheel
Stromeyer test is carried out to for bogie by left and right wheels with by the vibration of movable eccentric wheel.
Above-mentioned engine truck fatigue test board is disadvantageous in that: 1, it is strong that individually fatigue can not be carried out for framework
Degree test；2, bogie affords in true environment the vertical force from compartment is not considered simultaneously, from wheel to giving
Lateral force, brake force or tractive force when steering.
Therefore, need one kind can specially simulate train frame bear vertical force, turn to when lateral force, brake force or traction
The train frame fatigue test board of power.
Summary of the invention
(1) technical problems to be solved
The purpose of the present invention is to provide one kind can specially simulate train frame bear vertical force, turn to when lateral force,
The train frame fatigue test board of brake force or tractive force.
(2) technical solution
In order to achieve the above object, the main technical schemes that the present invention uses include:
The present invention provides a kind of train frame fatigue test board.Specifically, which includes: bottom
Seat, tested framework, vertical loading device, lateral loading device and positive loading device；
Tested framework is set on the base；
Vertical loading device is for loading downward load to tested framework；
Lateral loading device is used to load lateral load to tested framework；
Positive loading device is used to load tested framework positive load；
Positive loading device, lateral loading device, vertical loading device loading direction be mutually perpendicular to.
Further, train frame fatigue test board of the invention further include:
Stress disk, the number of stress disk are two, and two stress disks are separately positioned on the centre two of tested framework
Side；
The number of vertical loading device is two, and each vertical loading device adds tested framework by a stress disk
Carry downward load；
The number of lateral loading device is two, and each lateral loading device adds tested framework by a stress disk
Carry load；
The number of positive loading device is two, and each forward direction loading device adds tested framework by a stress disk
Carry load.
Further, train frame fatigue test board of the invention further include:
Portal frame, portal frame include the crossbeam of two columns of two columns and connection, and two columns are located at tested structure
The two sides of frame；
Each vertical loading device includes a vertical telescopic device, and each vertical telescopic device includes a vertical freedom
End and a vertical fixing end, the vertical fixing end linear movement relatively of vertical free end, each vertical telescopic device it is vertical solid
Fixed end is arranged on crossbeam, the upper surface loaded load of the vertical free end of each vertical telescopic device to a stress disk；
Each lateral loading device includes a lateral telescopic device, and each lateral telescopic device includes one lateral free
End laterallys secure end with one, and the relatively lateral fixing end linear movement in lateral free end, each lateral telescopic device is lateral solid
Fixed end is separately positioned on a column, and the lateral free end of each lateral telescopic device adds the periphery of a stress disk
Carry load；
Each forward direction loading device includes a positive telescopic device, and each forward direction telescopic device includes a positive freedom
End and a positive fixing end, the relatively positive fixing end linear movement in positive freedom end, the forward direction of each forward direction telescopic device are solid
Fixed end is set on the base, and is located at the two sides of tested framework, and the positive freedom end of each forward direction telescopic device is to one
The periphery loaded load of stress disk.
Further, each lateral loading device further includes a first vertical shift mechanism, each first vertical shift
Mechanism includes that first fixing end and a first movement end, first movement end move linearly with respect to the first fixing end；
Each first fixing end is connected with a column, and each first movement end is consolidated with the lateral of lateral telescopic device
Fixed end is connected；
First vertical shift mechanism, the position being arranged on column for adjusting lateral telescopic device；
Each forward direction loading device further includes a second vertical shift mechanism, and each second vertical shift mechanism includes one
A second fixing end and second mobile terminal, the second mobile terminal move linearly with respect to the second fixing end；
Each second fixing end is connected by a pedestal and pedestal, and each pedestal is set on the base, and each second moves
Moved end and the positive fixing end of a positive telescopic device are connected；
Second vertical shift mechanism, for adjusting the position of positive telescopic device setting on the base.
Further, the first vertical shift mechanism is screw slider mechanism；
First fixing end is the first lead screw, and first movement end is the first sliding block；
One end of first lead screw is connect with the first regulation handle；
Second vertical shift mechanism is screw slider mechanism；
Second fixing end is the second lead screw, and the second mobile terminal is the second sliding block；
One end of second lead screw is connect with the second regulation handle.
Further, framework is tested to be set on the base by four coil springs；
There are four cylinder, each cylinder includes a upper cover and a side neck ring for tested framework setting, each upper cover
It is connect with a side neck ring；
Each coil spring includes coil spring pedestal, coil spring ontology and coil spring footstock；
Each coil spring pedestal is set on the base；
One end of each coil spring ontology is connect with a coil spring pedestal, the other end of each coil spring ontology and one
The connection of coil spring footstock；
Each coil spring ontology is located at the inside of a side neck ring；
Each coil spring footstock is connect with a upper cover.
Further, the lower surface of stress disk is provided with a nose bar；
The intermediate two sides of tested framework are provided with the air spring mounting hole being open at least up；
Stress disk realizes the intermediate two sides that tested framework is arranged in by the way that nose bar to be plugged in air spring mounting hole.
Further, the vertical free end of vertical telescopic device is provided with plane of constraint, plane of constraint for increase with by
The load-carrying area of power disk upper surface；
The lateral free end of lateral telescopic device is provided with first watt of lining, first watt of lining be it is arc-shaped, first watt of lining is used for
Increase the load-carrying area with stress disk circumference face；
The positive freedom end of positive telescopic device is provided with second watt of lining, second watt of lining be it is arc-shaped, second watt of lining is used for
Increase the load-carrying area with stress disk circumference face.
Further, train frame fatigue test board of the invention further include:
Boss, the number of boss are four, and four boss and pedestal are connected, the top of each boss and a coil spring bottom
Seat is connected, and boss is for guaranteeing that tested framework is supported by coil spring.
Further, train frame fatigue test board of the invention further include:
Fastening disc, the number of fastening disc are four, are provided with disc hole in the middle part of each fastening disc；
Footstock hole is provided in the middle part of each coil spring footstock；
Each cover hole is provided in the middle part of upper cover；
Each coil spring footstock pass through sequentially pass through from the bottom up coil spring footstock, upper cover, fastening disc stud with
One upper cover connection.
(3) beneficial effect
The beneficial effects of the present invention are:
Train frame fatigue test board of the invention loads downward load to tested framework using vertical loading device,
It simulates tested framework and bears the vertical force from compartment；
Train frame fatigue test board of the invention, using lateral loading device to tested framework loading level load, mould
Quasi- tested framework bears lateral force when turning to；
Train frame fatigue test board of the invention, using positive loading device to tested framework loading level load, mould
Quasi- tested framework bears brake force when tractive force or braking when advancing；
Train frame fatigue test board of the invention is made using the stress disk for the intermediate two sides that tested framework is arranged in
For stress bearing piece, the vertical force of simulation while receiving from compartment, tractive force when lateral force, advance when from the steering of wheel pair
Or brake force when braking, it avoids that multiple stress points are arranged, so that the model of fatigue test board is simple；
Train frame fatigue test board of the invention is made using the stress disk for the intermediate two sides that tested framework is arranged in
For stress bearing piece, simulate the operative condition in real conditions Train framework and compartment, improve test authenticity and can
By property.
To sum up, when train frame fatigue test board of the invention can specially simulate train frame receiving vertical force, turn to
Lateral force, brake force or tractive force.
Detailed description of the invention
Fig. 1 is that structure when train frame fatigue test board carries out fatigue test to tested framework in specific embodiment is shown
It is intended to；
Fig. 2 is that the structural representation after lateral telescopic device and vertical telescopic device is arranged on portal frame in specific embodiment
Figure；
Fig. 3 is the structural schematic diagram being arranged on pedestal after coil spring and positive telescopic device in specific embodiment；
Fig. 4 is screw slider structural schematic diagram in specific embodiment；
Fig. 5 is stress disc structure schematic diagram in specific embodiment；
Fig. 6 is the mounting structure schematic diagram of fastening disc and cylinder in specific embodiment.
[description of symbols]
In figure:
1: pedestal；11: coil spring；12: pedestal；13: boss；
2: tested framework；21: cylinder；22: coil spring footstock；23: fastening disc；
3: stress disk；31: nose bar；
4: portal frame；41: column；42: crossbeam；
5: vertical telescopic device；
6: lateral telescopic device；61: the first lead screws；62: the first sliding blocks；63: the first watts of linings；
7: positive telescopic device；71: the second watts of linings.
Specific embodiment
In order to preferably explain the present invention, in order to understand, with reference to the accompanying drawing, by specific embodiment, to this hair
It is bright to be described in detail.
The train frame fatigue test board of-Fig. 6 referring to Fig.1, the present embodiment include at least: pedestal 1 is tested framework 2, is vertical
Loading device, lateral loading device and positive loading device.In the present embodiment, the direction vertical finger z laterally refers to the direction y, and forward direction refers to
The direction x.
Pedestal 1
On the basis of pedestal 1 is fixed on, the present embodiment on the basis of being mounted on pedestal 1 using foundation bolt, guarantees tested structure
Frame 2 will not generate displacement when carrying out fatigue test because of stress, but generate deformation, until fracture, measures tested structure
The service life and fatigue strength of frame 2 provide test basis for analysis train performance.
Tested framework 2
As shown in Figure 1, tested framework 2 is arranged on pedestal 1, tested framework 2 be can be arranged directly on pedestal 1, can also
To be arranged on pedestal 1 indirectly, in the present embodiment, it is tested framework 2 and is arranged on pedestal 1 by four coil springs 11.Each circle
Spring 11 includes coil spring pedestal, coil spring ontology and coil spring footstock 22, wherein the coil spring ontology in the present embodiment includes
Outer spring and inner spring.
Each coil spring pedestal is arranged on pedestal 1, and coil spring pedestal can be arranged directly on pedestal 1, can also between
It connecing and is arranged on pedestal 1, in the present embodiment, coil spring pedestal is arranged on pedestal 1 by boss 13, specifically, boss 13
Number is four, and four boss 13 and pedestal 1 are connected, and the top of each boss 13 is connected with a coil spring pedestal.
One end of each coil spring ontology is connect with a coil spring pedestal, the other end of each coil spring ontology and one
Coil spring footstock 22 connects.
There are four cylinder 21, each cylinder 21 includes a upper cover and a side neck ring, Mei Geshang for the tested setting of framework 2
Cover is connect with a side neck ring, and each upper cover and a side neck ring form a concave cavity.Each this position of coil spring
In the inside of a side neck ring, when installation, so that the concave cavity of cylinder 21 is opening down, cover on coil spring 11.
As shown in fig. 6, each coil spring footstock 22 connect with a upper cover, in the present embodiment, coil spring footstock 22 and
Upper cover is indirectly connected with by fastening disc 23, and the number of fastening disc 23 is four, and the middle part of each fastening disc 23 is arranged
There is disc hole, the middle part of each coil spring footstock 22 is provided with footstock hole, is each provided with cover hole in the middle part of upper cover, preferably
Ground, the aperture of disc hole are less than the aperture in cover hole.Each coil spring footstock 22 by sequentially passing through coil spring top from the bottom up
Seat 22, upper cover, fastening disc 23 stud connect with a upper cover, below coil spring footstock 22 with fastening disc 23
The upper surface of be respectively arranged with nut.In the present embodiment, spring shim can be set between fastening disc 23 and nut, so that circle
Connection between spring footstock 22 and upper cover is relatively reliable.When carrying out fatigue test to train frame, when train frame is long
Between by the lateral force of vertical force, lateral loading device from vertical loading device and the tractive force or system of positive loading device
Power, the loosening be easy to causeing between the upper cover of train frame cylinder 21 and coil spring footstock 22, can using spring shim
Vibration gap between the upper cover and coil spring footstock 22 of adjustment cylinder 21 in time, so that the installation of train frame is more steady
It is fixed.
Tested framework is arranged on pedestal 1 by coil spring 11, can simulate quilt under real operating environments by the present embodiment
The constraint relationship of framework 2 is surveyed, pith of the framework 2 as train bogie is tested, when actual use, using buckshot
Vibration and impact absorbing from track can be guaranteed the intensity and service life of bogie as support by spring 11.
Coil spring 11 is arranged on pedestal 1 by boss 13, tested framework 2 is arranged the bottom of at by the present embodiment
On seat 1, boss 13, will not be because of the effect and train frame of vertical force for guaranteeing that tested framework 2 is supported by coil spring 11
The effect of gravity, so that having other supporting point between train frame and pedestal 1, to cause different from true working environment
Situation.
Fastening disc 23 is mounted between upper cover and nut by the present embodiment, on the one hand, can be to avoid upper cover from spiral shell
It falls off in mother, this is because when train frame is when carrying out fatigue test, since the vibration of prolonged stress causes stud
Effect to cover hole, so that the aperture in cover hole becomes larger, change in shape, and the aperture of disc hole is less than the aperture in cover hole,
Disc hole can effect to avoid stud to cover hole；On the other hand, stress disk 3 can wiping to avoid nut to upper cover
Hurt, the intensity of cover in guarantee.
Stress disk 3
As shown in Figure 1 and Figure 5, the number of stress disk 3 is two, and two stress disks 3 are separately positioned on tested framework 2
Intermediate two sides.Specifically, the lower surface of stress disk 3 is provided with a nose bar 31, and the intermediate two sides of tested framework 2 are provided with
Be open air spring mounting hole at least up, and stress disk 3 is set by the way that nose bar 31 is plugged in realization in air spring mounting hole
It sets in the intermediate two sides of tested framework 2, and keeps the disk of stress disk 3 upward.More specifically, in the nose bar 31 of stress disk 3
Two O-shaped rubber seal of upper setting, the nose bar 31 of stress disk 3 and the shrinkage pool interference fit of air spring frame.The present embodiment
In, framework 2 is tested by 3 indirect excitation of directly excitation stress disk, the train frame of the present embodiment is enabled to test in this way
Platform it is simple and reliable for structure.
Portal frame 4
As shown in Fig. 2, portal frame 4 includes the crossbeam 42 of two columns 41 of two columns 41 and connection, two columns 41 divide
The two sides of framework 2 Wei Yu be tested, on the basis of two columns 41 are fixed on, specifically, flange arrangement, flange are set on column 41
Structure is fixed with basis by foundation bolt, more specifically, being provided with reinforcing rib between flange arrangement and column 41, reinforcing rib is used
Intensity between increase flange arrangement and column 41.The present embodiment, crossbeam 42 are symmetrically arranged two I-steel, column 41
It is bolted between crossbeam 42, reinforcing rib is provided between column 41 and crossbeam 42, reinforcing rib is for increasing column 41
With the intensity between crossbeam 42.
Vertical loading device
Vertical loading device is used to load tested framework 2 downward load, and the number of vertical loading device is two, often
A vertical loading device loads downward load to tested framework 2 by a stress disk 3, specifically, each Plumb load
Device includes one vertical stretch for loading downward load, each vertical loading device to the upper surface of a stress disk 3
Compression apparatus 5.
Each vertical telescopic device 5 includes a vertical free end and a vertical fixing end, and vertical free end is hung down relatively
It moves linearly to fixing end.Each vertical telescopic device 5 can be hydraulic cylinder, pneumatic cylinder, linear motor etc., in the present embodiment,
Using hydraulic cylinder as vertical telescopic device 5, wherein cylinder body is vertical fixing end, and piston rod is vertical free end.
As shown in Figure 1, the number of vertical telescopic device 5 is two, the vertical fixing end of each vertical telescopic device 5 is arranged
On crossbeam 42.In the present embodiment, ring flange is provided on the cylinder cap of vertical hydraulic cylinder, the cylinder cap of vertical hydraulic cylinder passes through bolt
It is connect with crossbeam 42.
The vertical free end of each vertical telescopic device 5 loads the upper surface of a stress disk 3.Vertical telescopic device
5 vertical free end is provided with plane of constraint, and plane of constraint is for increasing and the load-carrying area of 3 upper surface of stress disk.This reality
It applies in example, plane of constraint is formed by the surface of a circular plate, the piston rod thread connection of circular plate and hydraulic cylinder.
In the present embodiment, be provided with hydraulic fluid port on vertical hydraulic cylinder, communicated with hydraulic oil source, vertical hydraulic cylinder hydraulic fluid port with
Vertical throttle valve and lateral pressure table are provided on fluid pressure line between hydraulic oil source, in vertical hydraulic cylinder hydraulic fluid port and vertical section
Vertical hydraulic pressure retaining system is provided on fluid pressure line between stream valve.
Lateral loading device
Lateral loading device is used for tested 2 loaded load of framework, and the number of lateral loading device is two, each lateral
Loading device is by a stress disk 3 to tested 2 loaded load of framework, and specifically, each lateral loading device is used for one
The periphery loaded load of a stress disk 3.Each lateral loading device includes that a lateral telescopic device 6 and one first are perpendicular
Straight mobile mechanism.
Each lateral telescopic device 6 includes that a lateral free end and one laterally secure end, lateral free end opposite side
It moves linearly to fixing end.Lateral telescopic device 6 can be hydraulic cylinder, pneumatic cylinder, linear motor etc., in the present embodiment, use
Hydraulic cylinder is as lateral telescopic device 6, wherein cylinder body is to laterally secure end, and piston rod is lateral free end.
As shown in Figure 2 and Figure 4, the number of lateral telescopic device 6 is two, and each lateral telescopic device 6 laterallys secure
End is separately positioned on a column 41.Specifically, the end that laterallys secure of each lateral telescopic device 6 passes through one first respectively
Vertical shift mechanism is arranged on a column 41.
The number of first vertical shift mechanism is two, each first vertical shift mechanism include first fixing end and
One first movement end, first movement end vertically move linearly with respect to the first fixing end.Each first fixing end and one
A column 41 is connected, and each first movement end and the end that laterallys secure of a lateral telescopic device 6 are connected.
First vertical shift mechanism, the position being arranged on column 41 for adjusting lateral telescopic device 6.When tested framework
2 are placed on coil spring 11 the compression of coil spring 11 can be made to shorten, and pass through opposite shifting of the first movement end with respect to the first fixing end
The cooperation of dynamic 3 periphery of lateral free end and stress disk that can guarantee lateral telescopic device 6.
More specifically, the first vertical shift mechanism is screw slider mechanism in the present embodiment, the first fixing end is first
Thick stick 61, first movement end are the first sliding block 62, and one end of the first lead screw 61 is connect with the first regulation handle.In the present embodiment, often
First screw slide is provided on a column 41, the upper and lower ends of each first screw slide are provided with the first screw slide
Hole, each first lead screw 61 are arranged on a column 41 by two the first screw slide holes.In the present embodiment, side hydraulic
Ring flange is provided on the cylinder cap of cylinder, the cylinder cap of side hydraulic cylinder is connect by bolt with the first sliding block 62, then is adjusted by first
Save the installation site in vertical direction that handle adjusts side hydraulic cylinder.
The lateral free end of each lateral telescopic device 6 loads the periphery of a stress disk 3, lateral telescopic device
6 lateral free end is provided with first watt of lining 63, and first watt of lining 63 is arc-shaped, and first watt of lining 63 is for increasing and stress disk
The load-carrying area of 3 peripheries.In the present embodiment, first watt of lining 63 is connect with the piston rod thread of hydraulic cylinder.
In the present embodiment, be provided with hydraulic fluid port on side hydraulic cylinder, communicated with hydraulic oil source, side hydraulic cylinder hydraulic fluid port with
Lateral throttle valve and lateral pressure table are provided on fluid pressure line between hydraulic oil source, in side hydraulic cylinder hydraulic fluid port and lateral section
Side hydraulic pressure-retaining system is provided on fluid pressure line between stream valve.
Positive load charger
Positive loading device is used for tested 2 loaded load of framework, and the number of positive loading device is two, each forward direction
Loading device is by a stress disk 3 to tested 2 loaded load of framework, and specifically, each forward direction loading device is used for one
The periphery loaded load of a stress disk 3.Each forward direction loading device includes that a positive telescopic device 7 and one second are perpendicular
Straight mobile mechanism.
Each forward direction telescopic device 7 includes a positive freedom end and a positive fixing end, and positive freedom end is relatively just
It moves linearly to fixing end.Positive telescopic device 7 can be hydraulic cylinder, pneumatic cylinder, linear motor etc., in the present embodiment, use
Hydraulic cylinder is as positive telescopic device 7, wherein cylinder body is positive fixing end, and piston rod is positive free end.
The number of positive telescopic device 7 is two, and the positive fixing end of each forward direction telescopic device 7 is arranged on pedestal 1,
And the two sides of tested framework 2 are located at, specifically, the positive fixing end of each forward direction telescopic device 7 passes through the second vertical shifting
Motivation structure is arranged on the pedestal 12 of pedestal 1, and the number of pedestal 12 is two, and two pedestals 12 are symmetricly set on pedestal 1, and two
A pedestal 12 is located at the two sides of tested framework 2.
The number of second vertical shift mechanism is two, each second vertical shift mechanism include second fixing end and
One the second mobile terminal, the second mobile terminal vertically move linearly with respect to the second fixing end.Each second fixing end and one
A pedestal 12 is connected, and each second mobile terminal and the positive fixing end of a positive telescopic device 7 are connected.
Second vertical shift mechanism is for adjusting the position that positive telescopic device 7 is arranged on pedestal 12.When tested framework 2
Being placed on coil spring 11 can make the compression of coil spring 11 shorten, the relative movement by the second mobile terminal with respect to the second fixing end
It can guarantee the cooperation of 3 periphery of positive freedom end and stress disk of positive telescopic device 7.
More specifically, the second vertical shift mechanism is screw slider mechanism in the present embodiment, the second fixing end is second
Thick stick, the second mobile terminal are the second sliding block, and one end of the second lead screw is connect with the second regulation handle.In the present embodiment, each pedestal
Second screw slide is provided on 12, the upper and lower ends of each second screw slide are provided with the second screw slide hole, often
A second lead screw is arranged on a pedestal 12 by two the second screw slide holes.In the present embodiment, the cylinder of positive hydraulic cylinder
It covers and is provided with ring flange, the cylinder cap of positive hydraulic cylinder is connect by bolt with the second sliding block, then passes through the second regulation handle tune
Save the installation site in vertical direction of positive hydraulic cylinder.
The positive freedom end of each forward direction telescopic device 7 loads the periphery of a stress disk 3.Positive telescopic device
7 positive freedom end is provided with second watt of lining 71, and second watt of lining 71 is arc-shaped, and second watt of lining 71 is for increasing and stress disk
The load-carrying area of 3 peripheries.In the present embodiment, second watt of lining 71 is connect with the piston rod thread of hydraulic cylinder.
In the present embodiment, be provided with hydraulic fluid port on positive hydraulic cylinder, communicated with hydraulic oil source, positive hydraulic cylinder hydraulic fluid port with
Positive throttle valve and positive pressure table are provided on fluid pressure line between hydraulic oil source, in positive hydraulic cylinder hydraulic fluid port and positive section
Positive hydraulic pressure retaining system is provided on fluid pressure line between stream valve.
Positive loading device, lateral loading device, vertical loading device loading direction be mutually perpendicular to.Two positive loads
The loading direction of device is identical, the loading directions of two lateral loading devices on the contrary, two vertical loading devices loading direction
It is identical.
Application method
The application method of train frame fatigue test board (by taking hydraulic cylinder as an example) the following steps are included:
Step 1: selected one needs to carry out the train frame of fatigue test, and train frame is lifted into fatigue test board
On pedestal 1, four cylinders 21 with four coil springs 11 support train frame on pedestal 1 are paid attention to, while by each cover hole
It is inserted in the stud being fixed on coil spring footstock 22, makes four 11 Free Compressions of coil spring；
Fastening disc 23: being inserted in studs by step 2 above each upper cover, recycle spanner by nut and
Bolt is tightened, it is ensured that train frame is fixed on pedestal 1；
Step 3: two stress disks 3 are enclosed among train frame in the air spring mounting hole of two sides respectively, are protected
Nose bar 31 and shrinkage pool elastic conjunction are demonstrate,proved, so that it is guaranteed that stress disk 3 is pressed into train frame；
Step 4: it shakes the first regulation handle and adjusts the height of side hydraulic cylinder, shakes the second regulation handle adjusting forward direction
The positive freedom end of the height of hydraulic cylinder, the lateral free end and positive hydraulic cylinder that make side hydraulic cylinder is directed at stress disk 3
Periphery；
Step 5: positive hydraulic cylinder, side hydraulic cylinder and vertical hydraulic cylinder and hydraulic oil source are connected respectively, started simultaneously
Positive hydraulic pressure retaining system, side hydraulic pressure-retaining system and vertical hydraulic pressure retaining system；
Step 6: adjusting the valve port opening of positive throttle valve, lateral throttle valve and vertical throttle valve respectively, makes positive hydraulic
Hydraulic oil suction resistance inside cylinder, side hydraulic cylinder and vertical hydraulic cylinder is respectively 10KN, 40KN, 180KN；
Step 7: by the plane of constraint of vertical hydraulic cylinder, first watt of side hydraulic cylinder lining 63, positive hydraulic cylinder second
Watt lining 71 runs to and contacts with stress disk 3, after contact, that is, enters experimental stage, pays attention to the performance of observation analysis train frame
Situation.
The train frame fatigue test board of the present embodiment utilizes the stress disk for the intermediate two sides that tested framework 2 is arranged in
3, as stress bearing piece, the vertical force of simulation while receiving from compartment is led when lateral force, advance when from the steering of wheel pair
Brake force when gravitation or braking, avoids that multiple stress points are arranged, so that the model of fatigue test board is simple.
The train frame fatigue test board of the present embodiment utilizes the stress disk for the intermediate two sides that tested framework 2 is arranged in
3, as stress bearing piece, the operative condition in real conditions Train framework and compartment is simulated, improves the authenticity of test
And reliability.
The train frame fatigue test board of the present embodiment is oppositely arranged on using the lateral free end of lateral telescopic device 6
The linear movement for lateralling secure end of lateral telescopic device 6 on column 41 is simulated lateral when being tested the steering that framework 2 is born
Power.
The train frame fatigue test board of the present embodiment is oppositely arranged on using the vertical free end of vertical telescopic device 5
The hanging down from compartment that tested framework 2 is born is simulated in the linear movement of the vertical fixing end of vertical telescopic device 5 on crossbeam 42
Xiang Li.
The train frame fatigue test board of the present embodiment is oppositely arranged on using the positive freedom end of positive telescopic device 7
The traction when advance that tested framework 2 is born is simulated in the linear movement of the positive fixing end of positive telescopic device 7 on pedestal 1
Brake force when power or braking.
The train frame fatigue test board of the present embodiment tested framework 2 is arranged on pedestal 1 using coil spring 11, mould
The working condition for having intended real conditions Train framework improves the authenticity and reliability of test.
The train frame fatigue test board of the present embodiment applies phase in positive, lateral, vertical maximum load according to train
Like the continuous action power of size similar state, (positive maximum load is 10KN, lateral maximum load is 40KN, vertical most
Heavy load is 180KN), fatigue test results are reliable.
To sum up, the train frame fatigue test board of the present embodiment can not only specially simulate train frame and compartment, train
The constraint condition of framework and wheel pair, and lateral force, braking when can concentrate the vertical force applied under approximate real working condition, turn to
Power or tractive force improve the reliability of test, and then provide test basis to the design and producing defect of train frame.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (9)
1. a kind of train frame fatigue test board characterized by comprising pedestal (1), tested framework (2), stress disk (3),
Vertical loading device, lateral loading device and positive loading device；
The tested framework (2) is arranged on pedestal (1)；
Vertical loading device is used to load tested framework (2) downward load；
Lateral loading device is used to load lateral load to tested framework (2)；
Positive loading device is used to load tested framework (2) positive load；
It is described forward direction loading device, lateral loading device, vertical loading device loading direction be mutually perpendicular to；
The number of the stress disk (3) is two, and two stress disks (3) are separately positioned in the tested framework (2)
Between two sides；
The number of the vertical loading device is two, and each vertical loading device is by a stress disk (3) to quilt
It surveys framework (2) and loads downward load；
The number of the lateral loading device is two, and each lateral loading device is by a stress disk (3) to quilt
Survey framework (2) loaded load；
The number of the forward direction loading device is two, and each positive loading device is by a stress disk (3) to quilt
Survey framework (2) loaded load.
2. train frame fatigue test board according to claim 1, which is characterized in that further include:
Portal frame (4), crossbeam (42) of the portal frame (4) including two columns (41) of two columns (41) and connection, two
The column (41) is located at the two sides of the tested framework (2)；
Each vertical loading device includes one vertical telescopic device (5), and each vertical telescopic device (5) includes one
A vertical free end and a vertical fixing end, the vertical free end vertical fixing end linear movement relatively are each vertical to stretch
The vertical fixing end of compression apparatus (5) is arranged on the crossbeam (42), the vertical free end of each vertical telescopic device (5)
To the upper surface loaded load of a stress disk (3)；
Each lateral loading device includes a lateral telescopic device (6), and each lateral telescopic device (6) includes one
A lateral free end and one laterally secure end, and the relatively lateral fixing end linear movement in the lateral free end is each laterally stretched
The end that laterallys secure of compression apparatus (6) is separately positioned on the column (41), the side of each lateral telescopic device (6)
To free end to the periphery loaded load of a stress disk (3)；
Each positive loading device includes a positive telescopic device (7), and each positive telescopic device (7) includes one
A positive freedom end and a positive fixing end, the relatively positive fixing end linear movement in the positive freedom end, each forward direction are stretched
The positive fixing end of compression apparatus (7) is arranged on pedestal (1), and is located at the two sides of tested framework (2), each forward direction
Periphery loaded load of the positive freedom end of telescopic device (7) to a stress disk (3).
3. train frame fatigue test board according to claim 2, which is characterized in that
Each lateral loading device further includes a first vertical shift mechanism, each first vertical shift mechanism packet
First fixing end and a first movement end are included, the first movement end moves linearly with respect to the first fixing end；
Each first fixing end is connected with a column (41), and each first movement end is described lateral flexible with one
The end that laterallys secure of device (6) is connected；
First vertical shift mechanism, the position being arranged on column (41) for adjusting lateral telescopic device (6)；
Each positive loading device further includes a second vertical shift mechanism, each second vertical shift mechanism packet
Second fixing end and second mobile terminal are included, second mobile terminal moves linearly with respect to the second fixing end；
Each second fixing end is connected by a pedestal (12) and pedestal (1), and each pedestal (12) is arranged in pedestal (1)
On, each second mobile terminal and the positive fixing end of a positive telescopic device (7) are connected；
Second vertical shift mechanism, the position being arranged on pedestal (12) for adjusting positive telescopic device (7).
4. train frame fatigue test board according to claim 3, which is characterized in that
First vertical shift mechanism is screw slider mechanism；
First fixing end is the first lead screw (61), and the first movement end is the first sliding block (62)；
One end of first lead screw (61) is connect with the first regulation handle；
Second vertical shift mechanism is screw slider mechanism；
Second fixing end is the second lead screw, and second mobile terminal is the second sliding block；
One end of second lead screw is connect with the second regulation handle.
5. train frame fatigue test board according to claim 1, which is characterized in that
The tested framework (2) is arranged on pedestal (1) by four coil springs (11)；
There are four cylinder (21), each cylinder (21) includes a upper cover and a side for tested framework (2) setting
Cylinder ring, each upper cover are connect with a side neck ring；
Each coil spring (11) includes coil spring pedestal, coil spring ontology and coil spring footstock (22)；
Each coil spring pedestal is arranged on the pedestal (1)；
One end of each coil spring ontology is connect with a coil spring pedestal, the other end of each coil spring ontology and a buckshot
Spring footstock (22) connection；
Each coil spring ontology is located at the inside of a side neck ring；
Each coil spring footstock (22) connect with a upper cover.
6. train frame fatigue test board according to claim 1, which is characterized in that
The lower surface of the stress disk (3) is provided with a nose bar (31)；
The intermediate two sides of the tested framework (2) are provided with the air spring mounting hole being open at least up；
The stress disk (3) realizes setting in tested framework (2) by the way that nose bar (31) to be plugged in air spring mounting hole
Intermediate two sides.
7. train frame fatigue test board according to claim 2, which is characterized in that
The vertical free end of the vertical telescopic device (5) is provided with plane of constraint, the plane of constraint for increase with it is described
The load-carrying area of stress disk (3) upper surface；
The lateral free end of the lateral telescopic device (6) is provided with first watt of lining (63), and first watt of lining (63) is circular arc
Shape, first watt of lining (63) is for increasing and the load-carrying area of stress disk (3) periphery；
The positive freedom end of the forward direction telescopic device (7) is provided with second watt of lining (71), and second watt of lining (71) is circular arc
Shape, second watt of lining (71) is for increasing and the load-carrying area of stress disk (3) periphery.
8. train frame fatigue test board according to claim 5, which is characterized in that further include:
Boss (13), the number of the boss (13) are four, and four boss (13) and the pedestal (1) are connected, each
The top of boss (13) is connected with a coil spring pedestal, and the boss (13) is for guaranteeing that the tested framework (2) passes through institute
State coil spring (11) support.
9. train frame fatigue test board according to claim 5, which is characterized in that further include:
Fastening disc (23), the number of the fastening disc (23) are four, and the middle part of each fastening disc (23) is arranged
There is disc hole；
Footstock hole is provided in the middle part of each coil spring footstock (22)；
Cover hole is provided in the middle part of each upper cover；
Each coil spring footstock (22) by sequentially passing through coil spring footstock (22), upper cover, fastening disc from the bottom up
(23) stud is connect with a upper cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710375421.6A CN107202700B (en) | 2017-05-24 | 2017-05-24 | A kind of train frame fatigue test board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710375421.6A CN107202700B (en) | 2017-05-24 | 2017-05-24 | A kind of train frame fatigue test board |
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| CN107202700A CN107202700A (en) | 2017-09-26 |
| CN107202700B true CN107202700B (en) | 2019-01-29 |
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| CN201710375421.6A Active CN107202700B (en) | 2017-05-24 | 2017-05-24 | A kind of train frame fatigue test board |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871776B (en) * | 2018-07-17 | 2021-06-04 | 西南交通大学 | High-speed train axle damage identification test bed based on vibration response |
| CN109357895B (en) * | 2018-09-12 | 2020-05-22 | 中车长春轨道客车股份有限公司 | Special framework simulation supporting device for train modal test |
| CN109765066B (en) * | 2019-03-04 | 2020-11-03 | 西南交通大学 | Medium-low speed maglev vehicle suspension frame strength test platform |
| CN110595806B (en) * | 2019-10-29 | 2021-08-24 | 通号轨道车辆有限公司 | Loading method and loading device for loads of monorail framework and axle |
| CN110907201B (en) * | 2019-11-15 | 2021-09-24 | 华南理工大学 | Universal auxiliary frame fatigue test rack |
| CN111595705B (en) * | 2020-06-03 | 2023-03-14 | 常州市新创智能科技有限公司 | Equipment compartment fatigue test frock |
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| KR100872072B1 (en) * | 2007-08-23 | 2008-12-05 | 한국기계연구원 | Supporting construction of a load-testing apparatus for a train bogie frame |
| CN201876366U (en) * | 2010-09-27 | 2011-06-22 | 北京新联铁科技发展有限公司 | Static load test table for bogie of railway vehicle |
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|---|---|---|---|---|
| CN2669171Y (en) * | 2003-11-24 | 2005-01-05 | 中国北车集团四方车辆研究所 | Three-way loading tester of side rack of railway freight carrier steering rack |
| KR200377209Y1 (en) * | 2004-12-20 | 2005-03-14 | 샬롬엔지니어링 주식회사 | Bogie car Test apparatus and system using the same |
| KR100872072B1 (en) * | 2007-08-23 | 2008-12-05 | 한국기계연구원 | Supporting construction of a load-testing apparatus for a train bogie frame |
| CN201876366U (en) * | 2010-09-27 | 2011-06-22 | 北京新联铁科技发展有限公司 | Static load test table for bogie of railway vehicle |
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| CN107202700A (en) | 2017-09-26 |
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