CN110455652A - A kind of push rod compression test platform and test method - Google Patents
A kind of push rod compression test platform and test method Download PDFInfo
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- CN110455652A CN110455652A CN201910854132.3A CN201910854132A CN110455652A CN 110455652 A CN110455652 A CN 110455652A CN 201910854132 A CN201910854132 A CN 201910854132A CN 110455652 A CN110455652 A CN 110455652A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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Abstract
The invention discloses a kind of push rod compression test platforms, including platform base, the push rod fixed mechanism and load transmission mechanism that are fixed on platform base；Push rod is rotatably connected on the push rod fixed mechanism, the push rod is rotatably connected on load transmission mechanism far from the end of push rod fixed mechanism；The push rod fixed mechanism and the mutual cooperation of load transmission mechanism, which are realized, applies the load of two connecting pin of push rod.When photovoltaic tracking bracket is driven with push rod, maximum load capacity of the push rod under dead load can be tested with the test platform；Fatigue life number of the push rod under dynamic load can also be tested.Meanwhile the present invention also provides the specific test methods that dead load and dynamic load are carried out using above-mentioned test platform, using lever amplification principle and lifting platform, make to test closing to reality application operating condition, test result accuracy is high.
Description
Technical field
The invention belongs to test device fields, and in particular to a kind of push rod compression test platform and test method.
Background technique
In photovoltaic tracking support system, common driving device has revolution driving and line handspike driving etc.；Due to pushing away
Bar driving has advantage easy for installation, at low cost, easy to maintain compared with device for revolving and driving, adopts in present tracking support system
Design with push rod driving device is more and more；And the stability of push rod device and reliability test are essential.
The power for needing to keep used in the push rod of tracking bracket is very big, it is often necessary to reach a few tons of weight.And usual push rod
Compression test it is more simple, such as be usually using directly hang weight tested；But push rod is slender rod piece, it breaks
Song when bad often generation resistance to compression bends unstability or fatigue failure, this is not considered in existing compression test means
The problem of, cause the resistance to compression result accuracy of routine test not high, not closing to reality applicable cases.Since rod piece is pressurized at both ends
When be often destruction of the bent in the wrong unstable failure prior to static strength, therefore it is necessary to provide a kind of simple realities for those skilled in the art pole
With, measurement is accurate, test platform and the test side for carrying out compression test in the case where extending certain length for push rod of high reliablity
Method.
Summary of the invention
In view of the deficiency of the prior art, the present invention provides a kind of push rod compression test platform, photovoltaic tracking branch
When frame is driven with push rod, maximum load capacity of the push rod under dead load can be tested with the platform；Push rod can also be tested simultaneously
Fatigue life number under dynamic load；Specific test method is provided simultaneously.
A kind of push rod compression test platform is provided to achieve the above object, and the invention adopts the following technical scheme:
A kind of push rod compression test platform, including platform base, the push rod fixed mechanism being fixed on platform base and lotus
Carry transmission mechanism；
Push rod is rotatably connected on the push rod fixed mechanism, the push rod is rotated far from the end of push rod fixed mechanism to be connected
It connects on load transmission mechanism；The push rod fixed mechanism and load transmission mechanism, which cooperate, to be realized to two connecting pin of push rod
Load applies.
Preferably, the push rod fixed mechanism includes the push rod vertical columns being oppositely arranged on platform base, is fixed on
The push rod fixed cross beam for being used to fix push rod between push rod vertical columns.
Further, the push rod fixed cross beam is height-adjustable is fixed between the vertical columns being oppositely arranged.
Further, multiple rows of orifice plate is oppositely arranged on the push rod vertical columns, the push rod fixed cross beam passes through bolt
The length being fixed on any round of multiple rows of orifice plate between the connected end of extension elongation namely push rod two to adjust fixed push rod
Degree；And/or
The push rod fixed cross beam and push rod are hinged.
Preferably, the load transmission mechanism is set as lever amplifying mechanism, including L-shaped platform column and lever
Arm；The platform column is relatively fixed on platform base；With the connection of platform girder between the platform column and lever arm；Institute
State distal end connection weight；
And the lever arm is fixed with one with platform girder, and the platform girder opposed rotatable is connected to platform
On column；
The push rod is rotatably connected on the lever arm far from the end of push rod fixed mechanism.
Further, the load transmission mechanism further includes power detection device；
The push rod end is rotatably connected in power detection device, and the power detection device is fixed on lever arm.
Further, it corresponds to and also sets up on the downside of weight for applying dynamic load impact to push rod on the platform base
Lifting platform.
Further, platform girder both ends are rotatably set in bearing, and the bearing and platform column are connected
It is integrated, so that lever arm can be rotated with platform girder opposed platforms column, platform girder can be used as rotating fulcrum B.
Further, the bearing is fixed on the footstock of platform column by bearing block.
Further, the end of the lever arm hingedly is used to connect the suspension strop of weight；
The lever arm includes several test crossbeams of Relative vertical being fixed on platform girder, on test crossbeam
Further respectively have the first fixed beam for connecting end suspension strop, the second fixed beam for connecting push rod end.
The present invention also provides a kind of push rod compression resistant test methods, and using the push rod compression test platform, test exists
Whether the F that is under pressure effect lower push-rod dead load fails, and includes the following steps:
S1, push rod to be measured is connected between push rod fixed mechanism and load transmission mechanism；According to required measurement condition,
Make the extended length X of push rod；
It is further applied load for the weight of G to push rod in S2, load transmission mechanism with gravity；
S3, the load born according to equalising torque, calculating push rod:
The rotating joint of the suspension strop and lever arm is as weight fulcrum A；
The connector platform girder of the platform column and lever arm is as rotating fulcrum B；
The rotation connection of the push rod and load transmission mechanism is as push rod fulcrum O；
The distance of the push rod fulcrum O to rotating fulcrum B is L；The L that the distance of the weight to rotating fulcrum B are N times；
Under gravity G effect, push rod is only by a pair of contrary pressure F along push rod direction；It acquires:
F*L=G*N*L； (1)
: F=G*N； (2)
That is the pressure F that push rod fulcrum O is subject to is N times of weight weight G；
S4, to measuring push rod when extending X length, under the dead load of pressure F=G*N, whether push rod can be lost
Effect；By constantly adjusting maximum dead load of gravity G when measuring failure.
The present invention also provides a kind of push rod compression resistant test methods, and using the push rod compression test platform, test exists
Whether failed, is included the following steps: by basic pressure effect lower push-rod dynamic load
The obtaining step of S1, basic pressure are as follows:
S10, push rod to be measured is connected between push rod fixed mechanism and load transmission mechanism；According to required test work
Condition makes the extended length X of push rod；
It is further applied load for the weight of G to push rod in S11, load transmission mechanism with gravity；
S12, the load born according to equalising torque, calculating push rod:
The rotating joint of the suspension strop and lever arm is as weight fulcrum A；
The connector platform girder of the platform column and lever arm is used as and forms rotating fulcrum B；
The rotating joint of the push rod and power detection device is as push rod fulcrum O；
The distance of the push rod fulcrum O to rotating fulcrum B is L；The L that the distance of the weight to rotating fulcrum B are N times；
Under gravity G effect, push rod is only by a pair of contrary pressure F along push rod direction；It acquires:
F*L=G*N*L；(1)
: F=G*N；(2)
That is the pressure F that push rod fulcrum O is subject to is N times of weight weight G；
S13, i.e. using the pressure F that is calculated as basic pressure；
S2, the circular flow height H and running frequency f that lifting platform is arranged are contacting lifting platform and disengaging with weight
Cyclic switching between state, to make push rod load follow 0 between basic pressure during lifting platform Circularly liftable
Ring variation applies dynamic load impact to push rod；And each time when running is recorded by the power detection device at push rod fulcrum O
Point force value size, lifting platform record the number of run of its Circularly liftable；To be recorded in the Impact Load carry lower push-rod whether
Fatigue failure under certain number of shocks.
The beneficial effects of the present invention are:
1) test platform of the present invention combines the stress characteristic of tracking bracket, tests the two of push rod and is connected when end is pressurized and can bear
Peak load, which may be the lower dynamic load or dead load of wind effect, this platform in conjunction with push rod compression testing feature,
Using mechanisms such as lifting platform, lever amplifications, the platform of suitable push rod sound load and fatigue life test, test result are designed
Accuracy is high, closing to reality applicable cases, the effective solution difficult point of the test of push rod pressure-bearing.
2) present invention amplifies push rod load force using lever principle in load transmission mechanism；It is set in push rod fixed mechanism
Height-adjustable form is set, the load stressed effect under push rod difference extended length can be tested.To meet test standard
It is simple and compact for structure, ingenious in design under the premise of true property, it is practical, it is suitable for promoting.
3) present invention setting lifting platform adjustable lifting height and frequency, and recordable number of shocks；Be incorporated in push rod by
It is mounted with mechanics sensor on force, can record the real-time stress size of push rod；Therefore, analog is tired under Impact Load load
Labor life test.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of test platform of the present invention.
Fig. 2 is that push rod force diagram of the test platform of the present invention under dynamic load test (and put with lever by test platform
The schematic diagram of big load).
Fig. 3 is the schematic enlarged-scale view at mechanics detector of the present invention.
Fig. 4 is the structural schematic diagram at DOCK LEVELER of the present invention.
Fig. 5 is the schematic enlarged-scale view of push rod installation place of the present invention.
The meaning of label symbol is as follows in figure:
1- platform base；10- lifting platform；
2- push rod fixed mechanism；20- push rod vertical columns；21- push rod fixed cross beam；22- DOCK LEVELER；
3- load transmission mechanism；30- platform column；31- platform girder；32- lever arm；320- tests crossbeam；
The first fixed beam of 321-；The second fixed beam of 322-；33- weight；34- suspension strop；35- power detection device；
4- push rod；
A- weight fulcrum；B- rotating fulcrum；C- push rod installation point；O- push rod fulcrum.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, their not generations
Its practical structures as product of table.
Embodiment 1
As shown in Figure 1, the present embodiment is a kind of push rod compression test platform, including platform base 1, it is fixed on platform base
Push rod fixed mechanism 2 and load transmission mechanism 3 on 1；
Push rod 4 is rotatably connected on the push rod fixed mechanism 2, the push rod 4 turns far from one end of push rod fixed mechanism 2
It is dynamic to be connected on load transmission mechanism 3；The push rod fixed mechanism 2 cooperates with load transmission mechanism 3 to be realized to 4 liang of push rod
The load of connecting pin applies.
Push rod 4 and push rod fixed mechanism 2, load transmission mechanism 3 are rotation connection in the present embodiment, make push rod 4 not by
The effect of its holding power, to guarantee that the source of 4 pressure of push rod comes solely from load transmission mechanism 3 and connects to 4 liang of push rod
Applied load is held, therefore, which can be used to the maximum that simulation test push rod 4 can be born when two connecting pins are pressurized
Dead load, namely dead load when failing；And the length between two connecting pins is selected according to required operating condition, so as to
Test anti-load effect of the push rod 4 under specific extended length operating condition.
Embodiment 2
As shown in Figure 1, the present embodiment is a kind of push rod compression test platform, including platform base 1, it is fixed on platform base
Push rod fixed mechanism 2 and load transmission mechanism 3 on 1；
The push rod fixed mechanism 2 includes the push rod vertical columns 20 being oppositely arranged on platform base 1, is fixed on push rod
The push rod fixed cross beam 21 for being used to fix push rod 4 between vertical columns 20；It is rotatably connected to and pushes away on push rod fixed cross beam 21
Bar 4, the push rod 4 are rotatably connected on load transmission mechanism 3 far from the end of push rod fixed mechanism 2；The fixed machine of the push rod
Structure 2 and the mutual cooperation of load transmission mechanism 3, which are realized, applies the load of 4 liang of connecting pins of push rod.
The present embodiment provides a kind of specific push rod fixed mechanism setting on the basis of embodiment 1, which combines
The design structure of crossbeam is simple and compact, does not take up space and cost is relatively low.
As preferred embodiment, the height-adjustable fixation being oppositely arranged that is fixed on of the push rod fixed cross beam 21 is stood
Between column 20.To keep the extended length of adjustable in length namely push rod 4 between 4 liang of connecting pins of push rod adjustable.
Load transmission mechanism 3 can be further applied load to two connecting pins of push rod 4 pressure in the present embodiment, simulation test push rod 4
The peak load that can bear when two connecting pins are pressurized, wherein in push rod fixed mechanism 2 push rod fixed cross beam 21 mounting height
It is adjustable, so that this test platform can adjust the length between two connecting pins of push rod 4 according to required operating condition, so as to test
Anti- load effect of the push rod 4 under different extended length operating conditions.
In conjunction with shown in Fig. 4,5, it is furthermore preferred that relatively fixed multiple rows of orifice plate on push rod vertical columns 20, push rod is fixed horizontal
The both ends of beam 21 are bolted on the adjusting that fixed push rod extension elongation can be realized on any round of multiple rows of orifice plate.
It is of course also possible to use other height adjusting structures in the prior art realize the adjustment of 21 installation site of push rod fixed cross beam.
In conjunction with shown in Fig. 2,5, still more preferably, push rod installation point C is hingedly formed with push rod 4 on push rod fixed cross beam 21.
Embodiment 3
As shown in Figure 1, the present embodiment, on the basis of embodiment 1 or embodiment 2, the load transmission mechanism 3 includes being in
The platform column 30 and lever arm 32 of " L " type；The platform column 30 is relatively fixed on platform base 1；The platform column
With the connection of platform girder 31 between 30 and lever arm 32；32 end of lever arm rotatably connects weight 33；
The lever arm 32 is fixed with one with platform girder 31, and being connected to for 31 opposed rotatable of platform girder is flat
On platform column 30；
The push rod is rotatably connected on lever arm 32 far from one end of push rod fixed mechanism 2.
The present embodiment provides a kind of lever amplification setting of load transmission mechanism on the basis of embodiment 1 or 2, sufficiently
The stress of push rod 4 is exaggerated using lever principle.Wherein platform girder 31 and platform column 30 are rotation connection, make lever arm 32
The gravity laod of end weight 33 is all transmitted on push rod 4, is not shared by platform column 30；And weight 33 passes through suspension strop 34
It hingedly ensure that the load action of weight is all transmitted on lever arm 32 with lever arm 32 and be all transferred to push rod 4 in turn；Knot
The source for closing 4 pressure of push rod in previous embodiment comes solely from load transmission mechanism 3 and is applied to two connecting pins of push rod
Load, according to principle of moment balance, the gravity torque of 32 end of lever arm is equal with the compression torque of 4 end of push rod
According to arm of force size converse push rod suffered by multiple proportion between load force and the gravity of weight, thus according to gravity
It tests out whether certain dead load lower push-rod 4 can fail.And the whole design structure of its middle girder, column, lever arm
Simple and compact, cost is relatively low.
As preferred embodiment, the hinged suspension strop 34 in the end of the lever arm 32, weight 33 is directly anchored to hang
The end of rope 34.In practical application, the wirerope or steel wire rope that can bear constant weight is can be used in suspension strop 34.The lever arm
32 include several test crossbeams 320, is preferably set to 2 in the present embodiment, longer fashioned iron specifically can be used, horizontal in test
The first fixed beam 321 for connecting end suspension strop 34, the second fixation for connecting push rod 4 are further respectively had on beam 320
Beam 322.
As another preferred embodiment, the platform girder 31 is rotatably set in bearing and (can set as shown in the figure
For square pole, it is convenient for fixed overhanging lever arm 32), the bearing is fixed with one with platform column 30；Specifically, the bearing
It is fixed on by bearing block on the footstock of platform column 30, to realize lever arm 32 with 31 opposed platforms column 30 of platform girder
It can be rotated.Alternatively, the platform girder 31 and platform column 30 are hinged.
Embodiment 4
As shown in connection with fig. 3, for the present embodiment on the basis of embodiment 3, the load transmission mechanism 3 further includes power detection dress
Set 35；4 end of push rod is rotatably connected in power detection device 35, and the power detection device 35 is fixed on lever arm 32.
Preferably, the mechanics sensor that power detection device uses convenient for being fixedly mounted.
The present embodiment is mounted with the mechanics sensor of recordable real-time stress size in push rod stress point；So as to cooperate note
The stress size variation under dynamic load impact is recorded, the fatigue life of push rod is tested.Certainly, the present embodiment can also be more intuitive
It is recorded in pressure suffered by dead load lower push-rod, without by weight of equalising torque carries out.
Embodiment 5
As shown in Figure 1, the present embodiment, on the basis of embodiment 4, the downside that weight 33 is corresponded on the platform base 1 is set
Lifting platform 10 is set, lifting platform 10 is used to apply push rod 4 dynamic load impact.
Specifically, lifting platform 10 and weight 33 are disengaged position, namely not right when testing dead load suffered by push rod 4
Weight 33 provides holding power；So as to test under the dead load of constant weight, whether push rod 4 can fail.When test pushes away
When dynamic load suffered by bar 4, lifting platform 10 controls 4 load of push rod by the way that certain frequency and circular flow height H is arranged
It is completely attaching to and is completely disengaging in the downside of 0 to circulation change between certain pressure namely lifting platform 10 and weight 33
Switch between state, when full contact provides enough holding powers to weight 33, and push rod completely disengages not by the load of weight at this time
Lifting platform does not provide holding power, load of the push rod by weight when not contacting；It can be by certain frequency cycle to work as lifting platform
When adjustable height H, realize that applying Impact Load to push rod 4 carries, and can test after undergoing certain number of shocks under the dynamic load
Push rod whether fatigue failure.
As preferred embodiment, the counting device of recordable operating elevating platform number is provided on the lifting platform 10.
It is furthermore preferred that the counting device includes being arranged in the induced electricity magnet of 10 side wall of lifting platform setting and in 10 side of lifting platform
Close to switch, it is described to be electrically connected with counter close to switch；During lifting platform 10 once moves up and down, close to switch
Can magnetic induction it is primary, and close to switch be electrically connected with counter, approach switch the number information received is exported to counting
Device.In the present embodiment, the model punching machine electronic counter SJ-8S of counting device.
In addition, it should be noted that, lifting platform use herein is the custom component of outsourcing, and concrete implementation counts function
Structure and corresponding control circuit of energy etc. are the routine techniques that this field may be implemented, therefore do not do detailed explain in the present embodiment
It states.
Embodiment 6
The present embodiment is a kind of push rod compression resistant test method, in the push rod compression test platform provided using embodiment 3-5
On the basis of, whether test fails in the F effect lower push-rod dead load that is under pressure:
S1, push rod 4 to be measured is connected between push rod fixed mechanism 2 and load transmission mechanism 3；According to required test work
Condition makes the extended length X of push rod 4；
Weight 33 in S2, load transmission mechanism 3 with gravity for G, which is hinged on lever arm 32, is further applied load power to push rod 4
(lifting platform 10 and weight 33 are detached from this time, do not provide holding power to weight 33)；
S3, as shown in connection with fig. 2 calculates the load that push rod 4 is born according to equalising torque:
The rotating joint of the suspension strop 34 and lever arm 32 is as weight fulcrum A；
The connector platform girder 31 of the platform column 30 and lever arm 32 is used as rotating fulcrum B；
The rotating joint of the push rod 4 and load transmission mechanism 3 (is tested as push rod fulcrum O it should be noted that working as
When strong detection device 5 is installed in platform, the conduct push rod fulcrum O that is rotatably connected of the push rod 4 and power detection device 5；
When being fitted without power detection device 5, the conduct push rod fulcrum O that is rotatably connected of the push rod 4 and lever arm 32)；
The distance of the push rod fulcrum O to rotating fulcrum B is L；
The L that the gravity of the weight 33 is G, the distance of the weight 33 to rotating fulcrum B are N times；
The force analysis of push rod is as follows；Weight fulcrum A, rotating fulcrum B, push rod fulcrum O and push rod installation point C are that can turn
Dynamic connection type (such as can be using hinged)；Under gravity G effect, push rod is only by a pair of of direction phase along push rod direction
Anti- pressure F；It is acquired according to the balance of torque:
F*L=G*N*L； (1)
: F=G*N； (2)
That is the pressure F that push rod fulcrum O is subject to is N times of weight weight G；
S4, to measuring push rod when extending X length, under the dead load of pressure F=G*N, whether push rod can be lost
Effect；And it is possible to by constantly adjustment gravity G until maximum load when measuring failure.
Embodiment 7
As shown in Fig. 2, a kind of push rod compression resistant test method, the test platform provided using embodiment 5 are tested by basic
Whether pressure effect lower push-rod dynamic load fails:
S1, the basic pressure, the obtaining step of the basic pressure are obtained are as follows:
S10, push rod to be measured is connected between push rod fixed mechanism and load transmission mechanism；According to required test work
Condition makes the extended length X of push rod；
It is further applied load power (lifting platform 10 and weight at this time for the weight of G to push rod in S11, load transmission mechanism with gravity
33 are detached from, and do not provide holding power to weight 33)；
S12, the load born according to equalising torque, calculating push rod:
The rotating joint of the suspension strop 34 and lever arm 32 is as weight fulcrum A；
The connector platform girder 31 of the platform column 30 and lever arm 32 is used as rotating fulcrum B；
The rotating joint of the push rod 4 and mechanics sensor is as push rod fulcrum O；
The distance of the push rod fulcrum O to rotating fulcrum B is L；The L that the distance of the weight to rotating fulcrum B are N times；
Under gravity G effect, push rod is only by a pair of contrary pressure F along push rod direction；It is acquired according to equalising torque:
F*L=G*N*L； (1)
: F=G*N； (2)
The pressure F that i.e. push rod fulcrum is subject to is N times of weight weight G；
S13, i.e. using the pressure F that is calculated as basic pressure；
Wherein, it should be noted that basic pressure can (specifically can power as described above for any pressure size
Square equilibrium condition calculates), also include the case where that basic pressure is the maximum dead load that push rod can bear certainly；
S2, the circular flow height H and running frequency f that lifting platform is arranged are contacting lifting platform and disengaging with weight
Cyclic switching between state, to make push rod load follow 0 between basic pressure during lifting platform Circularly liftable
Ring variation applies dynamic load impact to push rod；And various time points when recording operation by the force snesor at push rod fulcrum O
Force value size, lifting platform record the number of run of its Circularly liftable；To be recorded under the Impact Load carries, experience is certain to be rushed
Hit number rear push-rod whether fatigue failure.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of push rod compression test platform, it is characterised in that:
Including platform base, the push rod fixed mechanism and load transmission mechanism that are fixed on platform base；
Push rod is rotatably connected on the push rod fixed mechanism, the push rod is rotatably connected on far from the end of push rod fixed mechanism
On load transmission mechanism；The load to two connecting pin of push rod is realized in the push rod fixed mechanism and the mutual cooperation of load transmission mechanism
Apply.
2. push rod compression test platform according to claim 1, it is characterised in that:
The push rod fixed mechanism includes the push rod vertical columns being oppositely arranged on platform base, is fixed on push rod vertical columns
Between for fixing the push rod fixed cross beam of push rod.
3. push rod compression test platform according to claim 2, it is characterised in that:
The push rod fixed cross beam is height-adjustable to be fixed between the vertical columns being oppositely arranged.
4. push rod compression test platform according to claim 3, it is characterised in that:
Multiple rows of orifice plate is oppositely arranged on the push rod vertical columns, the push rod fixed cross beam is bolted on multiple rows of orifice plate
Any round on adjust the extension elongation of fix push rod namely push rod two is connected hold between length；And/or
The push rod fixed cross beam and push rod are hinged.
5. push rod compression test platform according to claim 1-4, it is characterised in that:
The load transmission mechanism is set as lever amplifying mechanism, including L-shaped platform column and lever arm；The platform is vertical
Column is relatively fixed on platform base；With the connection of platform girder between the platform column and lever arm；The distal end
Connect weight；
And the lever arm is fixed with one with platform girder, and the platform girder opposed rotatable is connected to platform column
On；
The push rod is rotatably connected on the lever arm far from the end of push rod fixed mechanism.
6. push rod compression test platform according to claim 5, it is characterised in that:
The load transmission mechanism further includes power detection device；
The push rod end is rotatably connected in power detection device, and the power detection device is fixed on lever arm.
7. push rod compression test platform according to claim 6, it is characterised in that:
The lifting platform also set up on the downside of weight for applying dynamic load impact to push rod is corresponded on the platform base.
8. push rod compression test platform according to claim 5, it is characterised in that:
Platform girder both ends are rotatably set in bearing, and the bearing is fixed with one with platform column；And/or
The end of the lever arm hingedly is used to connect the suspension strop of weight；
The lever arm includes several test crossbeams of Relative vertical being fixed on platform girder, is also divided on test crossbeam
It She You not the first fixed beam for connecting end suspension strop, the second fixed beam for connecting push rod end.
9. a kind of push rod compression resistant test method, which is characterized in that surveyed using such as the described in any item push rod resistance to compressions of claim 5-8
Platform is tried, whether test is failed in the F effect lower push-rod dead load that is under pressure, included the following steps:
S1, push rod to be measured is connected between push rod fixed mechanism and load transmission mechanism；According to required measurement condition, make to push away
The extended length of bar is X；
It is further applied load power for the weight of G to push rod in S2, load transmission mechanism with gravity；
S3, the load born according to equalising torque, calculating push rod:
The rotating joint of the suspension strop and lever arm is as weight fulcrum A；
The connector platform girder of the platform column and lever arm is as rotating fulcrum B；
The rotation connection of the push rod and load transmission mechanism is as push rod fulcrum O；
The distance of the push rod fulcrum O to rotating fulcrum B is L；The L that the distance of the weight to rotating fulcrum B are N times；In weight
Under power G effect, push rod is only by a pair of contrary pressure F along push rod direction；Acquire the pressure F that push rod fulcrum O is subject to
It is N times of weight weight G；
S4, to measuring push rod when extending X length, under the dead load of pressure F=G*N, whether push rod can fail；
By constantly adjusting maximum dead load of gravity G when measuring failure.
10. a kind of push rod compression resistant test method, which is characterized in that using such as the described in any item push rod resistance to compressions of claim 5-8
Whether test platform, test are failed by basic pressure effect lower push-rod dynamic load, are included the following steps:
S1, the basic pressure, the obtaining step of the basic pressure are obtained are as follows:
S10, push rod to be measured is connected between push rod fixed mechanism and load transmission mechanism；According to required measurement condition, make
The extended length of push rod is X；
It is further applied load for the weight of G to push rod in S11, load transmission mechanism with gravity；
S12, the load born according to equalising torque, calculating push rod:
The rotating joint of the suspension strop and lever arm is as weight fulcrum A；
The connector platform girder of the platform column and lever arm is used as and forms rotating fulcrum B；
The rotating joint of the push rod and power detection device is as push rod fulcrum O；
The distance of the push rod fulcrum O to rotating fulcrum B is L；The L that the distance of the weight to rotating fulcrum B are N times；In weight
Under power G effect, push rod is only by a pair of contrary pressure F along push rod direction；Acquire the pressure F that push rod fulcrum O is subject to
It is N times of weight weight G；
S13, i.e. using the pressure F that is calculated as basic pressure；
S2, the circular flow height H and running frequency f that lifting platform is arranged make lifting platform with weight in the state for contacting with being detached from
Between cyclic switching, thus make during lifting platform Circularly liftable push rod load 0 between basic pressure recycle become
Change, i.e., dynamic load impact is applied to push rod；And various time points power when recording operation by the power detection device at push rod fulcrum O
It is worth size, lifting platform records the number of run of its Circularly liftable；Whether lower push-rod is carried certain to be recorded in the Impact Load
Number of shocks under fatigue failure.
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