CN107255569A - Longitudinal dynamic loading test device - Google Patents
Longitudinal dynamic loading test device Download PDFInfo
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- CN107255569A CN107255569A CN201710449065.8A CN201710449065A CN107255569A CN 107255569 A CN107255569 A CN 107255569A CN 201710449065 A CN201710449065 A CN 201710449065A CN 107255569 A CN107255569 A CN 107255569A
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- load bar
- locking voussoir
- backstop
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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)
Abstract
The invention provides a kind of longitudinal dynamic loading test device, including：Positive stop, coordinates with preceding from plate；Backstop, coordinates with after from plate；Longitudinal loading device, including longitudinal load bar, longitudinal load bar are located in positive stop；Check lock lever, the first end of check lock lever is stretched into positive stop and supports cooperation with longitudinal load bar, and the second end of check lock lever is stretched into backstop；First self-locking voussoir and the second self-locking voussoir, it is folded between the inwall of backstop and the second end of check lock lever, as longitudinal load bar loading tensile F1, gap is produced between check lock lever and the first self-locking voussoir, first self-locking voussoir under its own Action of Gravity Field slide downward to compensate gap, as longitudinal load bar on-load pressure F2, self-locking between the first self-locking voussoir and the second self-locking voussoir.The problem of Fatigue Test Research of the full-scale railway freight-car of the prior art caused by lacking longitudinal dynamic loading test device can not carry out can be efficiently solved by applying the technical scheme of the present invention.
Description
Technical field
The present invention relates to experimental rig field, in particular to a kind of longitudinal dynamic loading test device.
Background technology
Full-scale lorry body Fatigue Test Research is current development China railways " the quick transport of heavy duty " technology
Important means, and railway freight-car vehicle fatigue test equipment is the basis for carrying out this experimental study technology.For full-scale iron
Afloat car, longitudinal loading is the main cause that car body produces fatigue damage, and longitudinal loading condition is the main of car body fatigue test
Operating mode, therefore the analogue technique of longitudinal loading is very crucial, it is necessary to for car body inherent structure, with reference to fatigue test analogy method
Loading device reasonable in design, so as to realize that the longitudinal loading of science applies.
According to fatigue test correlation theory, it is necessary to when long during lorry body fatigue test longitudinal loading Work condition analogue
Between apply longitudinal cycle dynamicses load (i.e. load be divided to drawings, presses two kinds of load, and it is secondary that the long-term cycle loads hundreds of thousands) to car body, apply
Plus frequency and amplitude handled by vehicle line measured data, to meet line simulation precision and accelerating fatigue, load
Require to cancel the buffer unit of original longitudinal direction of car during application, be changed to rigid loading, and to reduce gap in loading procedure to keep away
Exempt from influence of the shock loading to result of the test.
Therefore, requiring that the device that simulation railway freight-car is longitudinally loaded must is fulfilled for following basic function：1st, rigidity adds
Carry, it is identical with actual vehicle that load applies position.2nd, load applies gapless adjustment when drawing, pressure conversion, steadily excessive, it is impossible to produce
Raw impact.3rd, highly versatile, as the chief component of vehicle fatigue test board, loading device requires that not damaged connects with car body
Connect, vehicle original structure must not be changed, different type railway freight-car need to be applied to.4th, due to the longitudinal simulation load of railway freight-car compared with
Greatly, meet on the basis of above-mentioned requirements, load maintainer must endure as 350t Tensile or Compressive Loading.
But the test simulation requirement of fatigue test Longitudinal Dynamic Load of Thf operating mode can be met currently without mechanism and device, lead
Causing the Fatigue Test Research of full-scale railway freight-car can not carry out.
The content of the invention
It is a primary object of the present invention to provide a kind of longitudinal dynamic loading test device, with solve it is of the prior art by
The problem of the Fatigue Test Research for lacking the full-scale railway freight-car caused by longitudinal dynamic loading test device can not carry out.
To achieve these goals, the invention provides a kind of longitudinal dynamic loading test device, including：Positive stop, with
The preceding of car body coordinates from plate；Coordinate after backstop, with car body from plate；Longitudinal loading device, including longitudinal load bar, longitudinal direction add
Carry bar to be located in positive stop, as longitudinal load bar loading tensile F1, longitudinal load bar is transmitted pulling force F1 by positive stop
To preceding from plate；Check lock lever, the first end of check lock lever stretches into positive stop and supports cooperation with longitudinal load bar, and the of check lock lever
Two ends are stretched into backstop, and as longitudinal load bar on-load pressure F2, pressure F2 is transferred to by longitudinal load bar by backstop
Afterwards from plate；The the first self-locking voussoir and the second self-locking voussoir cooperated, is arranged in backstop, the first self-locking voussoir and the
Two self-locking voussoirs are folded between the inwall of backstop and the second end of check lock lever, and the lozenges of the first self-locking voussoir and second is certainly
The lozenges contact of voussoir is locked, as longitudinal load bar loading tensile F1, gap is produced between check lock lever and the first self-locking voussoir,
Slide downward is to compensate gap under its own Action of Gravity Field for first self-locking voussoir, as longitudinal load bar on-load pressure F2, the
Self-locking between one self-locking voussoir and the second self-locking voussoir.
Further, the angle between the lozenges of the first self-locking voussoir and the lozenges and horizontal plane of the second self-locking voussoir
It is identical and between 3.8 ° to 4.2 °.
Further, the first self-locking voussoir is higher than the second self-locking voussoir.
Further, backstop includes having pockets on backstop matrix and protective plate, backstop matrix, protection
Plate lid is located on backstop matrix, and the first self-locking voussoir and the second self-locking voussoir are located in pockets.
Further, mounting hole is provided with the cell wall of the close positive stop of pockets, check lock lever is passed through after mounting hole
Coordinate with the first self-locking voussoir.
Further, longitudinal load bar includes load bar main body and is arranged on the head of load bar main body one end, head
Size be more than the size of load bar main body, the first end of head and check lock lever supports cooperations, positive stop including accommodating section and
It is provided with to be provided with the first escape groove for avoiding head, backstop section in backstop section, accommodating section and avoids the second of load bar main body
Escape groove, the first escape groove is connected with the second escape groove, the junction of the cell wall of the cell wall of the first escape groove and the second escape groove
Stop surface is formed, surface and the stop surface of the remote backstop on head coordinate.
Further, positive stop also includes spacing section, and accommodating section is located between spacing section and backstop section, is set in spacing section
Limited location hole, spacing hole is connected with the first escape groove, the first end of check lock lever pass through after spacing hole with the head in the first escape groove
Portion coordinates.
Further, head is rectangular block, and the length on head is more than the height on head.
Further, longitudinal loading device also includes actuator, and actuator applies pulling force F1 or pressure to longitudinal load bar
F2。
Further, actuator is to be provided with servo-hydraulic action device, one end of the remote check lock lever of longitudinal load bar
Connect the connector that servo-hydraulic acts device.
Apply the technical scheme of the present invention, longitudinal dynamic loading test device includes the front with coordinating before car body from plate
Block, with the backstop coordinated from plate, longitudinal load bar for being located in positive stop after car body and stretching into positive stop with after
Check lock lever in block.As longitudinal load bar loading tensile F1, before pulling force F1 is transferred to by longitudinal load bar by positive stop
From plate.As longitudinal load bar on-load pressure F2, longitudinal load bar pressure F2 is transferred to by backstop after from plate.On
State structure and disclosure satisfy that rigid loading, it is identical with actual vehicle that load applies position, before being from plate with after from plate.In addition,
Longitudinal dynamic loading test device also includes the first self-locking voussoir and the second self-locking voussoir cooperated in the present invention, and first certainly
Lock voussoir and the second self-locking voussoir are folded between the inwall of backstop and the second end of check lock lever, the wedge shape of the first self-locking voussoir
Face is contacted with the lozenges of the second self-locking voussoir, as longitudinal load bar loading tensile F1, check lock lever and the first self-locking voussoir it
Between produce gap, slide downward is to compensate gap under its own Action of Gravity Field for the first self-locking voussoir, when the loading of longitudinal load bar
During pressure F2, self-locking between the first self-locking voussoir and the second self-locking voussoir, i.e. the first self-locking voussoir in the presence of pressure F2 not
Relatively moved between meeting and the second self-locking voussoir.When said structure to draw, presses conversion, it is not necessary to artificially adjust gap.When
When conversion produces gap, the first self-locking voussoir can glide and automatic filling chink in the presence of its gravity.On the one hand to draw
Press conversion can smooth transition, on the other hand because gap can automatically be padded therefore will not produce impact, so that guarantee test
Precision.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the dimensional structure diagram of the embodiment of longitudinal dynamic loading test device according to the present invention；
Fig. 2 shows the vertical profile structural representation in a direction of Fig. 1 longitudinal dynamic loading test device；
Fig. 3 shows the vertical profile structural representation in another direction of Fig. 1 longitudinal dynamic loading test device；
Fig. 4 shows the dimensional structure diagram of the positive stop of Fig. 1 longitudinal dynamic loading test device；And
Fig. 5 shows the dimensional structure diagram of the backstop of Fig. 1 longitudinal dynamic loading test device.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
1st, it is preceding from plate；2nd, from plate after；10th, positive stop；11st, accommodating section；111st, the first escape groove；12nd, backstop section；121st,
Two escape groove；13rd, stop surface；14th, spacing section；141st, spacing hole；20th, backstop；21st, backstop matrix；211st, pockets；
2111st, mounting hole；22nd, protective plate；31st, longitudinal load bar；311st, load bar main body；312nd, head；313rd, connector；40th, lock
Tight bar；50th, the first self-locking voussoir；60th, the second self-locking voussoir.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1 to Figure 3, longitudinal dynamic loading test device of the present embodiment includes：Positive stop 10, backstop 20,
Longitudinal loading device, check lock lever 40 and the first self-locking voussoir 50 and the second self-locking voussoir 60 cooperated.Wherein, positive stop
10 coordinate with the preceding of car body from plate 1.Backstop 20 after car body from plate 2 with coordinating.Longitudinal loading device includes longitudinal load bar
31, longitudinal load bar 31 is located in positive stop 10, and as longitudinal 31 loading tensile F1 of load bar, longitudinal load bar 31 is by preceding
Pulling force F1 is transferred to preceding from plate 1 by block 10.The first end of check lock lever 40 stretch into positive stop 10 and with longitudinal load bar 31
Cooperation is supported, the second end of check lock lever 40 is stretched into backstop 20, as longitudinal 31 on-load pressure F2 of load bar, longitudinal load bar
31 pressure F2 is transferred to by backstop 20 after from plate 2.The the first self-locking voussoir 50 and the second self-locking voussoir cooperated
60 are arranged in backstop 20, and the first self-locking voussoir 50 and the second self-locking voussoir 60 are folded in the inwall and check lock lever of backstop 20
Between 40 the second end, the lozenges of the first self-locking voussoir 50 is contacted with the lozenges of the second self-locking voussoir 60, when longitudinal loading
During 31 loading tensile F1 of bar, gap is produced between the self-locking voussoir 50 of check lock lever 40 and first, the first self-locking voussoir 50 is at its own
Slide downward is to compensate gap under Action of Gravity Field, as longitudinal 31 on-load pressure F2 of load bar, the first self-locking voussoir 50 and second
Self-locking between self-locking voussoir 60.
Using the technical scheme of the present embodiment, longitudinal dynamic loading test device include with before car body before plate cooperation
Block 10, with the backstop 20 coordinated from plate, longitudinal load bar 31 for being located in positive stop 10 after car body and before stretching into
With the check lock lever 40 in backstop 20 in block 10.As longitudinal 31 loading tensile F1 of load bar, longitudinal load bar 31 is by preceding
Pulling force F1 is transferred directly to preceding from plate by block 10.As longitudinal 31 on-load pressure F2 of load bar, longitudinal load bar 31 passes through
Backstop 20 pressure F2 is transferred directly to after from plate.Said structure disclosure satisfy that rigid loading, and load applies position and reality
Border vehicle is identical, before being from plate and after from plate.In addition, longitudinal dynamic loading test device is also included mutually in the present embodiment
The the first self-locking voussoir 50 and the second self-locking voussoir 60 coordinated, the first self-locking voussoir 50 and the second self-locking voussoir 60 are kept off after being folded in
Between the inwall of block 20 and the second end of check lock lever 40, the wedge shape of the lozenges of the first self-locking voussoir 50 and the second self-locking voussoir 60
Face is contacted, as longitudinal 31 loading tensile F1 of load bar, gap is produced between the self-locking voussoir 50 of check lock lever 40 and first, first certainly
Lock lozenges of the voussoir 50 down along the second self-locking voussoir 60 under its own Action of Gravity Field to slide to compensate gap, when longitudinal direction adds
When carrying 31 on-load pressure F2 of bar, self-locking between the first self-locking voussoir 50 and the second self-locking voussoir 60, i.e. the first self-locking voussoir 50 exist
It will not be relatively moved in the presence of pressure F2 between the second self-locking voussoir 60.When said structure to draw, presses conversion, no
Gap must artificially be adjusted.When conversion produces gap, the first self-locking voussoir 50 can glide in the presence of its gravity and fill out automatically
Squeegee gap.On the one hand cause tension and compression conversion can smooth transition, on the other hand because gap can automatically be padded therefore will not produce
Raw shock loading, so that guarantee test precision.
It should be noted that except disclosure satisfy that rigidity loading and draw, pressure conversion when load apply gapless adjust it
Outside, because the present embodiment does not change the original structure of vehicle, therefore suitable for different types of railway freight-car, so that should
The highly versatile of longitudinal dynamic loading test device.In addition, said structure can bear 350t Tensile or Compressive Loading, therefore, it is possible to essence
The pulling force and pressure being really subject to during simulation railway freight-car actual motion.Therefore longitudinal dynamic loading test device energy of the present embodiment
The basic demand being previously mentioned in background technology is enough met, the simulation of car body longitudinal loading dynamic load is realized, is full-scale railway
Truck body Fatigue Test Research is laid a good foundation.
Illustrated below with the conversion of tension and compression twice, as longitudinal 31 first time of load bar loading tensile F1, check lock lever 40
Gap is produced between the first self-locking voussoir 50, the first self-locking voussoir 50 is under its own Action of Gravity Field down along the second self-locking wedge
The lozenges of block 60 is slided to compensate gap, and as longitudinal 31 first time of load bar on-load pressure F2, the first self-locking voussoir 50 exists
It will not be relatively moved in the presence of pressure F2 between the second self-locking voussoir 60.When longitudinal second of loading of load bar 31 is drawn
During power F1, gap may be produced between the self-locking voussoir 50 of check lock lever 40 and first again, the first self-locking voussoir 50 is at its own
It can continue to slide to compensate gap down along the lozenges of the second self-locking voussoir 60 under Action of Gravity Field, when longitudinal load bar 31 second
During secondary on-load pressure F2, the first self-locking voussoir 50 will not occur relatively in the presence of pressure F2 between the second self-locking voussoir 60
It is mobile.Therefore as tension and compression convert being continuously increased for number of times, the probability and gap length that gap is produced can be steadily decreasing, i.e.,
Longitudinal dynamic loading test device can be more and more tighter.Therefore on the one hand said structure can be realized is rigidly connected with car body, complete
The longitudinal loading simulation of paired car body, on the other hand can improve dynamic load data precision so that testing fatigue result is more
Accurately.
Preferably, in the present embodiment, the first self-locking voussoir 50 in the presence of self gravitation and mechanical oscillation work
With downslide.
As shown in Fig. 2 in the present embodiment, the lozenges of the lozenges of the first self-locking voussoir 50 and the second self-locking voussoir 60
Angle between horizontal plane is identical and between 3.8 ° to 4.2 °.Preferably, in the present embodiment, the first self-locking voussoir 50 with
Second self-locking voussoir 60 is made up of 40Cr, the lozenges and level of the lozenges of the first self-locking voussoir 50 and the second self-locking voussoir 60
Angle between face is 4 °.Certainly, it will be appreciated by those skilled in the art that according to the first self-locking voussoir 50 and the second self-locking wedge
The material of block 60 is different, the angle not limited to this between lozenges and horizontal plane, as long as meeting the first self-locking when applying pressure
The self-locking voussoir 60 of voussoir 50 and second produces locking phenomenon.
With the downslide of the first self-locking voussoir 50, the first self-locking voussoir 50 and the second self-locking voussoir 60 are in the axial direction
Length can also increase therewith, in order to reduce the volume of backstop 20, the waste of material be reduced, as shown in Fig. 2 in the present embodiment
In, the first self-locking voussoir 50 is higher than the second self-locking voussoir 60.Said structure can effectively reduce the volume of backstop 20, so that
Reduce production cost.
As shown in Fig. 2 in the present embodiment, backstop 20 includes backstop matrix 21 and protective plate 22, backstop base
There are pockets 211, the lid of protective plate 22 is located on backstop matrix 21, the first self-locking voussoir 50 and the second self-locking wedge on body 21
Block 60 is located in pockets 211.Said structure is simple, it is easy to assemble.Preferably, in the present embodiment, protective plate 22 passes through
Screw is fixed on backstop matrix 21.
As shown in Figure 2 and Figure 5, in the present embodiment, it is provided with peace on the cell wall of the close positive stop 10 of pockets 211
Hole 2111 is filled, check lock lever 40 coordinates after passing through mounting hole 2111 with the first self-locking voussoir 50.It should be noted that the traction of car body
The axis of beam is overlapped with the axis of mounting hole 2111, is overlapped with the axis for ensureing longitudinal load bar 31 with the axis of draw beam.
As shown in Figures 2 and 3, in the present embodiment, longitudinal load bar 31 includes load bar main body 311 and is arranged on to add
The head 312 of the one end of bar main body 311 is carried, the size on head 312 is more than the size of load bar main body 311, head 312 and check lock lever
40 first end supports cooperation, and positive stop 10 includes being provided with avoidance head in accommodating section 11 and backstop section 12, accommodating section 11
The second escape groove 121 for avoiding load bar main body 311 is provided with 312 the first escape groove 111, backstop section 12, first avoids
Groove 111 is connected with the second escape groove 121, and the junction of the cell wall of the first escape groove 111 and the cell wall of the second escape groove 121 is formed
Stop surface 13, surface and the stop surface 13 of the remote backstop 20 on head 312 coordinate.When apply pulling force F1 when, head 312 it is remote
Surface from backstop 20 coordinates with stop surface 13, and pulling force F1 can be applied to preceding from plate 1 by positive stop 10.Said structure
Simply, it is easy to process.
As shown in Figures 2 to 4, in the present embodiment, positive stop 10 also includes spacing section 14, and accommodating section 11 is located at spacing section
Between 14 and backstop section 12, spacing hole 141 is provided with spacing section 14, spacing hole 141 is connected with the first escape groove 111, locked
The first end of bar 40 coordinates after passing through spacing hole 141 with the head 312 in the first escape groove 111.It should be noted that in this reality
Apply in example, the axis of spacing hole 141 overlaps axis to be further ensured that longitudinal load bar with the axis of mounting hole 2111 with leading
The axis for drawing beam is overlapped.
As shown in Figure 1 to Figure 3, in the present embodiment, head 312 is rectangular block, and the length on head 312 is more than head 312
Height.Said structure is simple, is easy to assembling.
In the present embodiment, longitudinal loading device also includes actuator, and actuator applies pulling force F1 to longitudinal load bar 31
Or pressure F2.
As shown in Figure 1 to Figure 3, it is preferable that in the present embodiment, actuator is that servo-hydraulic acts device, longitudinal load bar
The connector 313 that connection servo-hydraulic acts device is provided with one end of 31 remote check lock lever 40.Certainly, people in the art
Member acts device it should be known that above-mentioned actuator is not limited to servo-hydraulic, can also be other actuator, as long as disclosure satisfy that experiment
Required loading force.
It following is a brief introduction of the assembling process of longitudinal loading device：
1st, by longitudinal load bar 31 out of, the left part of the car body in Fig. 2 inserts car body to the right draw beam, and head 312 is made
Before stretching into from plate 1 and after between plate 2；
2nd, check lock lever 40 is penetrated in positive stop 10 and backstop matrix 21, forms assembling assembly；
3rd, the bottom of draw beam has installing port, assembling assembly is attached to from bottom to up before draw beam from plate 1 with after
From between plate 2, and head 312 is set to be contained in the first escape groove 111；
The 4th, first self-locking voussoir 50 and the second self-locking voussoir 60 are installed so that the first self-locking voussoir 50 and the second self-locking voussoir
60 are contained in pockets 211；
The 5th, protective plate 22 is installed, prevents the first self-locking voussoir 50 and the second self-locking voussoir 60 from deviating from out of pockets 211.
6th, the last bottom in draw beam sets to block the baffle plate of above-mentioned installing port to prevent assembling assembly from traction
Deviate from beam.
It should be noted that the execution sequence of the above-mentioned first step and second step is in no particular order.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of longitudinal dynamic loading test device, it is characterised in that including：
Positive stop (10), with coordinating before car body from plate (1)；
Backstop (20), with coordinating after the car body from plate (2)；
Longitudinal loading device, including longitudinal load bar (31), longitudinal load bar (31) are located in the positive stop (10),
As longitudinal load bar (31) loading tensile F1, longitudinal load bar (31) is drawn by the positive stop (10) by described
Power F1 is transferred to described preceding from plate (1)；
Check lock lever (40), the first end of the check lock lever (40) stretch into the positive stop (10) and with longitudinal load bar
(31) cooperation is supported, the second end of the check lock lever (40) is stretched into the backstop (20), when longitudinal load bar (31)
During on-load pressure F2, longitudinal load bar (31) by the backstop (20) by the pressure F2 be transferred to it is described after from plate
(2) on；
The the first self-locking voussoir (50) cooperated and the second self-locking voussoir (60), are arranged in the backstop (20), described
First self-locking voussoir (50) is folded in the inwall and the check lock lever (40) of the backstop (20) with the second self-locking voussoir (60)
The second end between, the lozenges of the first self-locking voussoir (50) is contacted with the lozenges of the second self-locking voussoir (60),
As longitudinal load bar (31) loading tensile F1, produced between the check lock lever (40) and the first self-locking voussoir (50)
Gap, slide downward is to compensate the gap under its own Action of Gravity Field for the first self-locking voussoir (50), when the longitudinal direction
During load bar (31) on-load pressure F2, self-locking between the first self-locking voussoir (50) and the second self-locking voussoir (60).
2. longitudinal dynamic loading test device according to claim 1, it is characterised in that the first self-locking voussoir (50)
Lozenges it is identical with the angle between the lozenges and horizontal plane of the second self-locking voussoir (60) and 3.8 ° to 4.2 ° it
Between.
3. longitudinal dynamic loading test device according to claim 1, it is characterised in that the first self-locking voussoir (50)
Higher than the second self-locking voussoir (60).
4. longitudinal dynamic loading test device according to claim 1, it is characterised in that after the backstop (20) includes
There are pockets (211), the protective plate on block matrix (21) and protective plate (22), the backstop matrix (21)
(22) lid is located on the backstop matrix (21), and the first self-locking voussoir (50) is located at the second self-locking voussoir (60)
In the pockets (211).
5. longitudinal dynamic loading test device according to claim 4, it is characterised in that the pockets (211)
Mounting hole (2111) is provided with the cell wall of the positive stop (10), the check lock lever (40) passes through the mounting hole
(2111) coordinate afterwards with the first self-locking voussoir (50).
6. longitudinal dynamic loading test device according to claim 1, it is characterised in that longitudinal load bar (31) bag
Include load bar main body (311) and be arranged on the head (312) of described load bar main body (311) one end, the head (312)
Size is more than the size of the load bar main body (311), and the first end of the head (312) and the check lock lever (40), which is supported, matches somebody with somebody
Close, the positive stop (10) includes being provided with described in avoidance on accommodating section (11) and backstop section (12), the accommodating section (11)
It is provided with first escape groove (111) on head (312), backstop section (12) and avoids the of the load bar main body (311)
Two escape groove (121), first escape groove (111) connects with second escape groove (121), first escape groove
(111) junction of cell wall and the cell wall of second escape groove (121) forms stop surface (13), the head (312)
Surface away from the backstop (20) coordinates with the stop surface (13).
7. longitudinal dynamic loading test device according to claim 6, it is characterised in that the positive stop (10) also includes
Spacing section (14), the accommodating section (11) is located between spacing section (14) and backstop section (12), described spacing section
(14) spacing hole (141) is provided with, the spacing hole (141) connects with first escape groove (111), the check lock lever
(40) first end coordinates with the head (312) in first escape groove (111) afterwards through the spacing hole (141).
8. longitudinal dynamic loading test device according to claim 6, it is characterised in that the head (312) is rectangle
Block, the length of the head (312) is more than the height of the head (312).
9. longitudinal dynamic loading test device according to claim 1, it is characterised in that longitudinal loading device is also wrapped
Actuator is included, the actuator applies pulling force F1 or pressure F2 to longitudinal load bar (31).
10. longitudinal dynamic loading test device according to claim 9, it is characterised in that the actuator is servo-fluid
Press and make device, the connection servo-hydraulic is provided with one end of the remote check lock lever (40) of longitudinal load bar (31)
Act the connector (313) of device.
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| CN201710449065.8A CN107255569B (en) | 2017-06-14 | 2017-06-14 | Longitudinal dynamic loading test device |
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| CN201710449065.8A CN107255569B (en) | 2017-06-14 | 2017-06-14 | Longitudinal dynamic loading test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896327A (en) * | 2018-05-22 | 2018-11-27 | 中车青岛四方机车车辆股份有限公司 | Longitudinal force load test system and loading method inside a kind of vehicle body of railway vehicle |
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| CN104297079A (en) * | 2014-09-16 | 2015-01-21 | 南京航空航天大学 | Testing device and testing method for fretting fatigue of end-tooth structure |
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