CN206208678U - A kind of fatigue experimental device of beam - Google Patents

A kind of fatigue experimental device of beam Download PDF

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Publication number
CN206208678U
CN206208678U CN201621067739.5U CN201621067739U CN206208678U CN 206208678 U CN206208678 U CN 206208678U CN 201621067739 U CN201621067739 U CN 201621067739U CN 206208678 U CN206208678 U CN 206208678U
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China
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dynamic loading
load
dead load
hydraulic actuator
power plant
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朱正邦
李�杰
崔修斌
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Beijing Institute of Structure and Environment Engineering
Tianjin Aerospace Ruilai Technology Co Ltd
Beijing Aerostandard Technology Co Ltd
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Beijing Institute of Structure and Environment Engineering
Tianjin Aerospace Ruilai Technology Co Ltd
Beijing Aerostandard Technology Co Ltd
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Abstract

The utility model discloses a kind of fatigue experimental device of beam, including incubator, the inside is from left to right arranged at intervals with left fixed plate, bearing plate and right fixed plate in the incubator, and the left fixed plate, bearing plate and right fixed plate edge interval are provided through many support bars;The right side wall of left fixed plate is fixedly installed dynamic loading hydraulic actuator, and dynamic loading hydraulic actuator is connected with dynamic loading force snesor, and dynamic loading force snesor is connected with dynamic loading increased pressure board left side wall;The dynamic loading increased pressure board front-right is provided with dead load increased pressure board, and beam is placed between dead load increased pressure board and bearing plate;Dead load hydraulic actuator is provided with right fixed plate left side wall, dead load hydraulic actuator is connected with dead load force snesor, dead load force snesor left end is connected with the dead load increased pressure board.The utility model can allow test operation personnel convenience, reliability that temperature stress is carried out to beam and fatigue load is tested, and significantly reduces experimentation cost.

Description

A kind of fatigue experimental device of beam
Technical field
The utility model is related to fatigue test technology field, more particularly to a kind of fatigue experimental device of beam.
Background technology
At present, fatigue experimental device is stress or the strain for sample or component is born cycle or change at random, to determine The device of the index such as fatigue limit and fatigue life.Before product comes into operation, need to carry out sufficient fatigue in the lab Performance test is examined, and fatigue limit and the fatigue life of product is measured, so as to ensure that product will not go out in actual use Existing fatigue damage failure.
For elevator, the damping cushion material that it has is rubber, and beam plays the work of bumper and absorbing shock in use With.Due to the difference of environment, beam can not only be subject to mechanical shock and reversed fatigue load in real process, can also receive To the influence of temperature and humidity.At present, some beams in use for some time, can be influenceed by environment, its mechanical property Can constantly decline, so as to occur in that fatigue.Accordingly, it would be desirable to carry out the fatigue load experiment under environmental stress to beam.
But, current device, temperature stress that simply can be individually to beam is detected, or is individually carried out Fatigue load is tested, it is therefore desirable to is configured many table apparatus, is not only occupied substantial amounts of test space, and need test operation people Member is familiar with grasping many table apparatus, and very big inconvenience is brought to the routine use of test operation personnel.
Therefore, at present in the urgent need to developing a kind of fatigue experimental device, it can allow test operation personnel convenient, reliable The temperature stress of beam is detected, and fatigue load experiment is carried out to beam, test operation is convenient, fast Victory, significantly reduces experimentation cost, saves valuable test space.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of fatigue experimental device of beam, and it can allow experiment Operating personnel are convenient, the reliable temperature stress to beam is detected, and to beam carry out fatigue load experiment simultaneously, Test operation is convenient, fast, significantly reduces experimentation cost, saves valuable test space, is conducive to extensive production application, has There is great production practices meaning.
Therefore, the utility model provides a kind of fatigue experimental device of beam, including hollow incubator, the incubator Left fixed plate, bearing plate and right fixed plate are inside from left to right arranged at intervals with, the left fixed plate, bearing plate and right fixed plate Edge interval is provided through many support bars;
The right side wall of the left fixed plate is fixedly installed dynamic loading hydraulic actuator, and the dynamic loading hydraulic actuator is right The output shaft of end is connected with the left end of dynamic loading force snesor, and right-hand member and the dynamic loading of the dynamic loading force snesor are pressurizeed The left side wall of plate is connected;
The front-right of the dynamic loading increased pressure board is provided with a dead load increased pressure board, and the dead load increased pressure board is located at institute The front-left of bearing plate is stated, being placed between the dead load increased pressure board and the bearing plate needs to carry out the damping of fatigue test Pad;
A dead load hydraulic actuator is fixedly installed on the left side wall of the right fixed plate, the dead load hydraulic pressure is made The output shaft of dynamic device left part is connected with the right-hand member of a dead load force snesor, the dead load force snesor left end and institute Dead load increased pressure board is stated to be connected.
Wherein, the dynamic loading force snesor is used to monitor the alternation that the dynamic loading hydraulic actuator is applied to beam Load;The dead load force snesor is applied to the permanent load of beam and subtracts for monitoring the dead load hydraulic actuator Shake the deformation quantity of pad;
The dynamic loading force snesor and dead load force snesor are connected with same data acquisition module by holding wire Connect.
Wherein, an axis of guide is also equipped with the left side wall of the bearing plate, the left end of the axis of guide is through described In inserting the dynamic loading force snesor after dynamic loading increased pressure board.
Wherein, the dynamic loading hydraulic actuator is connected with a dynamic loading power plant module, the dynamic loading power mould Block is used to provide kinetic energy for the dynamic loading hydraulic actuator;
The dead load hydraulic actuator is connected with a dead load power plant module, and the dead load power plant module is used for For the dead load hydraulic actuator provides function.
Wherein, the dynamic loading power plant module and dead load power plant module include hydraulic power source and proportional valve controller respectively, The proportional valve controller is connected with the hydraulic power source;
The proportional valve controller is used to control the hydraulic power source to the dynamic loading hydraulic actuator or dead load liquid The hydraulic pressure size of pressure actuator output, so as to control what the dynamic loading hydraulic actuator or dead load hydraulic actuator were exported Magnitude of load.
Wherein, also including test control module, the test control module respectively with dynamic loading power plant module and dead load Power plant module is connected, and for sending control signal to the dynamic loading power plant module and dead load power plant module, controls respectively The alternate load that the dynamic loading power plant module exports default size gives dynamic loading hydraulic actuator, and controls the dead load The permanent load that power plant module exports default size gives dead load force snesor.
Wherein, the test control module is connected with the proportional valve controller in dynamic loading power plant module, the experiment Control module is connected with the proportional valve controller in dead load power plant module.
Wherein, the test control module is waveform generator;
The beam is rubber blanket.
The technical scheme provided from above the utility model, compared with prior art, the utility model proposes A kind of fatigue experimental device of beam, it can allow test operation personnel to facilitate, the reliable temperature stress to beam is carried out Detection, and fatigue load experiment is carried out to beam simultaneously, test operation is convenient, fast, significantly reduces experimentation cost, saves Valuable test space, is conducive to extensive production application, is of great practical significance.
Brief description of the drawings
A kind of stereochemical structure of the fatigue experimental device of beam that Fig. 1 is provided for the utility model when incubator is not drawn Schematic diagram;
A kind of front view of the fatigue experimental device of beam that Fig. 2 is provided for the utility model;
A kind of right view of the fatigue experimental device of beam that Fig. 3 is provided for the utility model;
In a kind of fatigue experimental device of beam that Fig. 4 is provided for the utility model in a kind of embodiment beam it is vertical Body structural representation;
In figure, 1 is left fixed plate, and 2 is dynamic loading hydraulic actuator, and 3 is dynamic loading force snesor, and 4 pressurize for dynamic loading Plate, 5 is dead load increased pressure board, and 6 is beam, and 7 is bearing plate, and 8 is dead load force snesor, and 9 is support bar, and 10 is dead load Hydraulic actuator, 11 is right fixed plate, and 12 is incubator, and 13 is dead load power plant module, and 14 is dynamic loading power plant module, and 15 is to lead To axle.
Specific embodiment
In order that those skilled in the art more fully understand the utility model scheme, below in conjunction with the accompanying drawings and implementation method The utility model is described in further detail.
A kind of fatigue experimental device of the beam provided referring to Fig. 1 to Fig. 4, the utility model, enters for convenient, reliability Row is detected to the temperature stress of beam, and carries out fatigue load experiment to beam simultaneously, that is, should in environment Fatigue load experiment is carried out under power.
The fatigue experimental device of beam of the present utility model specifically includes rectangle, hollow incubator 12, the incubator 12 Inside from left to right it is arranged at intervals with left fixed plate 1, bearing plate 7 and the right fixed plate 11 of rectangle, the left fixed plate 1, bearing plate 7 Edge interval with right fixed plate 11 is provided through four support bars 9.
It should be noted that the incubator 12 can adjust its internal temperature and humidity, the temperature for providing stabilization With the environmental stress of humidity.The left fixed plate 1 and right fixed plate 11 have rigidity higher, be respectively used to balance dynamic loading and Dead load.Used as the force rod for connecting whole fatigue experimental device, it also has stronger rigidity to the support bar 9.
In the utility model, implement, the incubator 12 can adjust its internal temperature with any one With the incubator of humidity, for example, can be the incubator of the model SDJ720F of Tianjin space flight Rui Lai Science and Technology Ltd.s production, incubator body Product is 2m3, the temperature range that can be adjusted is -70~120 DEG C.
Implement, the left fixed plate 1, bearing plate 7 and right fixed plate 11 constitute load maintainer, the loading together Mechanism is assembly type frock.Full thread is used on the support bar 9, can be according to the different free adjustment assemblies of installation site. The left fixed plate 1, bearing plate 7 and right fixed plate 11 and bearing plate 7 form into an entirety, are strengthening self stability Meanwhile, also improve the rigidity of whole device.
In the utility model, the right side wall of the left fixed plate 1 is fixedly installed a dynamic loading hydraulic actuator 2, The output shaft of the right part of dynamic loading hydraulic actuator 2 is connected with the left end of a dynamic loading force snesor 3, the dynamic load The right-hand member of load forces sensor 3 is connected with the left side wall of a dynamic loading increased pressure board 4;
The front-right of the dynamic loading increased pressure board 4 is provided with a dead load increased pressure board 5, the dead load increased pressure board 5 Gap between the front-left of the bearing plate 7, the dead load increased pressure board 5 and the bearing plate 7 for placement need into The beam 6 (as testpieces) of row fatigue test, i.e., the left side wall of described bearing plate 7 is fixedly installed the beam, described Beam 6 is preferably rubber blanket.
It should be noted that the dynamic loading increased pressure board 4, as the load plate acted directly on beam 6, in experiment During move back and forth;The dead load increased pressure board 5, as the load plate acted directly on beam 6, in process of the test It is static and be in contact with the beam 6.The bearing plate 7, for fixing beam 6, and balances dynamic loading and dead load.
In the utility model, a dead load hydraulic actuator is fixedly installed on the left side wall of the right fixed plate 11 10, the output shaft of the left part of dead load hydraulic actuator 10 is connected with the right-hand member of a dead load force snesor 8, described The left end of dead load force snesor 8 is connected with the dead load increased pressure board 5.
It should be noted that for the utility model, the dynamic loading hydraulic actuator 2 can be by the dynamic load load forces Sensor 3 transmits load to dynamic loading increased pressure board 4, i.e., for applying to preset the alternating download of size to the dynamic loading increased pressure board 4 Lotus (the numerical value meeting dynamic change of load);The dead load hydraulic actuator 10 can be transmitted by dead load force snesor 8 and carried Lotus to dead load increased pressure board 5, i.e., for applying the permanent load of default size to the dead load increased pressure board 5.
Also, it should be noted that the dynamic loading force snesor 3 is applied to for monitoring the dynamic loading hydraulic actuator 2 The alternate load (being applied to the load on dynamic loading increased pressure board 4) of beam 6;The dead load force snesor 8 is used to monitor The dead load hydraulic actuator 10 is applied to the permanent load of beam 6 (being applied to the load on dead load increased pressure board 5) With the deformation quantity of beam 6.
In the utility model, the dynamic loading force snesor 3 and dead load force snesor 8 and same data acquisition module Block is connected by holding wire, and the data acquisition module is used in process of the test, obtains the He of dynamic loading force snesor 3 Load data that dead load force snesor 8 is exported (including the dynamic loading hydraulic actuator 2 is applied to the alternation of beam 6 Load, and the dead load hydraulic actuator 10 is applied to the permanent load of beam 6 and the deformation quantity of beam 6).Cause This, the load that the data acquisition module is exported by dynamic loading force snesor 3 described in real time record and dead load force snesor 8 Lotus test data, can show the statistical parameter of force curve.
In the utility model, implement, the dynamic loading force snesor 3 and dead load force snesor 8 can be Any one can be with the force snesor of accurate measurement load, and the power of the model BK-2B that can be for example produced by space flight 701 is passed Sensor, the range of the force snesor is ± 500kg, and precision is 0.5kg.
In the utility model, implement, the data acquisition module can effectively gather institute with any one The data acquisition device of the load data that dynamic loading force snesor 3 and dead load force snesor 8 are exported is stated, for example, can be Thailand The dynamic signalling analysis system of the model TST-5912 of Si Te Electronics Co., Ltd.s production.
In the utility model, implement, an axis of guide 15 be also equipped with the left side wall of the bearing plate 7, The left end of the axis of guide 15 is inserted after the dynamic loading increased pressure board 4 in the dynamic loading force snesor 3, it is necessary to explanation It is, the axis of guide 15, the movement locus for constraining dynamic loading increased pressure board 4 that linearity higher and straight line can be kept defeated Go out, the phenomenon of output shaft transfer occurs in loading in anti-immobilising load hydraulic actuator 2, it is ensured that the uniformity of load.
In the utility model, the dynamic loading hydraulic actuator 2 is connected with a dynamic loading power plant module 14, described Dynamic loading power plant module 14 is used to be provided for the dynamic loading hydraulic actuator 2 kinetic energy of stabilization.Equally, implement, institute State dead load hydraulic actuator 10 to be connected with a dead load power plant module 13, it is institute that the dead load power plant module 13 is used for State the function that dead load hydraulic actuator 10 provides stabilization.
Implement, the dynamic loading power plant module 14 and dead load power plant module 13 be able to can be carried for any one For the power plant module of power, the hydraulic power source that steady pressure and flow can be provided is preferably comprised, using hydraulic oil as medium, Wherein pressure and flow can carry out stepless regulating by electric signal, and equipped with energy storage equipment, to reduce the impact in motion.
Implement, the dynamic loading power plant module 14 and dead load power plant module 13 include hydraulic power source and ratio respectively Valve control, the proportional valve controller is connected with the hydraulic power source, and the hydraulic power source is made with the dynamic loading hydraulic pressure respectively Dynamic device 2 or dead load hydraulic actuator 10 are connected, and the proportional valve controller is used to control the hydraulic power source to described dynamic Load hydraulic actuator 2 or the hydraulic pressure size of the output of dead load hydraulic actuator 10, so as to control the dynamic loading hydraulic pressure to make Dynamic device 2 or the magnitude of load of the output of dead load hydraulic actuator 10.
For the utility model, the dynamic loading power plant module 14 and dead load power plant module 13 are driven using hydraulically extensible Motivation structure, that is, dynamic loading hydraulic actuator 2 and dead load hydraulic actuator 10 including being fixedly installed and corresponding ratio Example valve control.
For the utility model, the load maintainer that the left fixed plate 1, bearing plate 7 and right fixed plate 11 are constituted together, energy The load of dynamical system is passed into being delivered on beam of stabilization, and by dynamic loading power plant module 14 and dead load power plant module 13 With temperature environment isolation, do not interfere with mutually.
In the utility model, the fatigue experimental device also includes test control module, the test control module point It is not connected with dynamic loading power plant module 14 and dead load power plant module 13, for the dynamic loading power plant module 14 and static load Lotus power plant module 13 sends control signal, and the alternate load of the default size of the output of dynamic loading power plant module 14 is controlled respectively (the numerical value meeting dynamic change of load) gives dynamic loading hydraulic actuator 2, and controls the dead load power plant module 13 to export pre- If the permanent load of size is to dead load force snesor 8.
Implement, the test control module is connected with the proportional valve controller in dynamic loading power plant module 14, For sending control signal to the proportional valve controller in the dynamic loading power plant module 14, so as to control the dynamic loading power The hydraulic pressure size that hydraulic power source in module 14 is exported to the dynamic loading hydraulic actuator 2;The test control module and static load Proportional valve controller in lotus power plant module 13 is connected, for sending control signal in the dead load power plant module 13 Proportional valve controller, so as to control the hydraulic power source in the dead load power plant module 13 defeated to the dead load hydraulic actuator 10 The hydraulic pressure size for going out.
Implement, a signal generator is included in the test control module, for forming control signal (such as Voltage signal).Therefore, it can by test control module of the present utility model, to the dynamic loading power plant module 14 and static load Frequency, power, displacement signal (i.e. control signal) that proportional valve controller input in lotus power plant module 13 gives, you can by electricity Pressure signal drives proportional valve controller, so as to control the hydraulic pressure size that hydraulic power source is exported, controls the action of hydraulic cylinder, constantly carries out Closed-loop control.
Therefore, by test control module of the present utility model, the utility model can according to input setting load or Person's decrement controls the hydraulic actuator and proportional valve controller (i.e. hydraulically extensible drive mechanism), can meet difference Alternate load or decrement experimental condition.Whole device adoption rate opened loop control of the present utility model, is opened by two The combination of loop systems, can complete the basic function of closed-loop system.
In the utility model, implement, the test control module can be central processor CPU, numeral letter Number processor DSP or single-chip microprocessor MCU, preferably the waveform generator digital signal generator of frequency-shift keying amplitude modulation (can).
In order to the fatigue experimental device of the beam provided the utility model has more intuitive understanding, below briefly The specific installation and debugging step of bright fatigue experimental device of the present utility model, comprises the following steps:
1st, by left fixed plate 1, dynamic loading hydraulic actuator 2, dynamic loading force snesor 3, dynamic loading increased pressure board 4, dead load Increased pressure board 5 connects into an entirety;
2nd, dead load force snesor 8, dead load hydraulic operation device 10, right fixed plate 11 are connected into an entirety;
3rd, beam 6 is installed on bearing plate 7, and erection dead load increased pressure board 5 is on dead load force snesor 8;
4th, left fixed plate 1, bearing plate 7 and right fixed plate 11 etc. are connected on support bar 9, adjust relative position, locking;
5th, axle 15, dynamic loading increased pressure board 4, bearing plate 7 are directed to and are linked to be an entirety, check whether that motion is smooth;
6th, dynamic loading force snesor 3 and dead load force snesor 8 are connected with data acquisition module by holding wire, and Whether detection signal connection is normal;
7th, dead load power plant module 13 is opened, the pump pressure pressure of regulation wherein hydraulic power source monitors dead load force snesor 8 Numerical value;
8th, dynamic loading power plant module 14 is opened, test control module is opened, certain debugging signal is set, monitor dynamic loading The numerical value of force snesor 3;
9th, start small magnitude experiment, observe test specimen state;
10th, magnitude is stepped up, to formal test.
In order to be more clearly understood from technology design of the present utility model, done furtherly with reference to specific embodiment It is bright.
A kind of a kind of experimental condition of embodiment of fatigue experimental device of beam that table 1 below is provided for the utility model shows Expectation.
Table 1:
Referring to table 1, for four beam samples for presetting experimental condition, first pass through dead load hydraulic pressure on beam 6 Actuator 10 applies a dead load 3100N, then again by test control module, sets the dynamic loading hydraulic actuator 2 The alternate load of the dynamic loading for being applied is 0 to 2472N, and applying frequency is 3Hz, at the trial, the dynamic loading hydraulic actuation The dynamic loading increased pressure board 4 that device 2 drives, can be carried out instead to the dead load increased pressure board 5 of the dead load hydraulic actuator 10 effect The extruding (i.e. the action direction of dead load and dynamic loading this load is opposite) in direction, therefore, dead load and dynamic loading two such Compressive load is overlapped mutually, and forms the alternating download charge values of test requirements document, and the compressive load of arbitrary alternation can be decomposed into One dead load and a superposition for dynamic loading.At this time, data acquisition module passes through the acquired dynamic loading force snesor 3 (including the dynamic loading hydraulic actuator 2 is applied to the friendship of beam 6 to the load data exported with dead load force snesor 8 Varying load, and the dead load hydraulic actuator 10 is applied to the permanent load of beam 6 and the deformation quantity of beam 6), and Real time record, it is possible to which real-time monitoring obtains the real load and deformation quantity that the beam 6 is subject to.
It should be noted that for common hydraulic test, above-mentioned dead load and dynamic loading is easily achieved, wherein The dynamic loading of 0N, it is only necessary to which dynamic loading increased pressure board 4 and beam 6 are separated, and control mode is very simple.
Furthermore, it is necessary to explanation, when the thrust for testing is larger, it is possible to increase the internal diameter of dynamic loading hydraulic actuator 2, When frequency for testing is very fast, the internal diameter of dynamic loading hydraulic actuator 2 can be reduced.
Based on above technical scheme understand, compared with prior art, the utility model provide a kind of beam it is tired Labor experimental rig, it has following technique effect:
1st, simple structure, it is easy to control, be easily installed maintenance, whole fatigue experimental device adoption rate opened loop control leads to Two combinations of open cycle system are crossed, the basic function of closed-loop system can be completed, not only meet test requirements document, and significantly The experimentation cost of reduction;
2nd, move back and forth actuator using hydraulic system, recycle loading system, by hydraulic system and incubator system every From, both is not interfered with each other, straight line output higher is ensure that, the output shaft overcome in hydraulic actuator loading occurs The phenomenon of transfer, it is ensured that the uniformity of load;
3rd, adoption rate open loop control mode, device flow in 40L/min or so, in 14Mpa or so adopt by rated pressure With the hydraulic actuator of single-out lever, the stroke and switching frequency of wherein actuator can be controlled by waveform generator, example Such as, the numerical value (displacement or power) of setting is input into waveform generator, you can proportional valve controller is driven by voltage signal, from And the action of hydraulic actuator is controlled, meanwhile, the utility model uses electrical proportional formula pressure regulation, can be according to setting program freedom Change the thrust size of actuator, and the impact in loading procedure is absorbed using accumulator;
4th, be placed into inside incubator for whole load maintainer, fixed mechanism, mechanism for monitoring by the utility model, a whole set of machinery system System forms an internal force structure for self-balancing, fully relies on the rigidity of system itself, and incubator is not subject to loading force, and a whole set of dress Put and be free to movement, experiment early investment cost is greatly saved.
Based on above-mentioned technical proposal understand, the utility model in view of the shortcomings of the prior art with experimentation cost high, there is provided one Plant simple, low cost, be efficiently applied to fatigue load experimental rig of the elevator shock-absorbing pad under environmental stress, it is meeting not While with experimental condition so that whole experiment is more convenient during implementation, novelty by incubator and Hydraulic fatigue Loading system is combined together, while instead of the closed-loop system of high cost with the combination of two open cycle systems of low cost.This Utility model can apply in fatigue load experiment of the elevator shock-absorbing pad under environmental stress well, be used to complete examination product The mechanical fatigue performance of train under different humitures of product, it adds the temperature range can be between 60 DEG C to 0 DEG C, and humidity range exists Within 99%RH, within 2T, loading frequency is within 3Hz for loading force.
In sum, compared with prior art, the fatigue experimental device of a kind of beam that the utility model is provided, its Can allow test operation personnel are convenient, the reliable temperature stress to beam is detected, and beam be carried out simultaneously tired Labor load test, test operation is convenient, fast, significantly reduces experimentation cost, saves valuable test space, is conducive to extensive Production application, is of great practical significance.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching also should be regarded as protection domain of the present utility model.

Claims (8)

1. a kind of fatigue experimental device of beam, it is characterised in that including hollow incubator (12), in the incubator (12) from It is left-to-right to be arranged at intervals with left fixed plate (1), bearing plate (7) and right fixed plate (11), the left fixed plate (1), bearing plate (7) Edge interval with right fixed plate (11) is provided through many support bars (9);
The right side wall of the left fixed plate (1) is fixedly installed dynamic loading hydraulic actuator (2), the dynamic loading hydraulic actuator (2) output shaft of right part is connected with the left end of dynamic loading force snesor (3), the right-hand member of the dynamic loading force snesor (3) Left side wall with dynamic loading increased pressure board (4) is connected;
The front-right of the dynamic loading increased pressure board (4) is provided with a dead load increased pressure board (5), the dead load increased pressure board (5) Placing needs positioned at the front-left of the bearing plate (7), between the dead load increased pressure board (5) and the bearing plate (7) is carried out The beam (6) of fatigue test;
A dead load hydraulic actuator (10), the dead load liquid are fixedly installed on the left side wall of the right fixed plate (11) The output shaft of actuator (10) left part is pressed to be connected with the right-hand member of a dead load force snesor (8), the static load load forces are passed Sensor (8) left end is connected with the dead load increased pressure board (5).
2. device as claimed in claim 1, it is characterised in that the dynamic loading force snesor (3) is for monitoring the dynamic load Lotus hydraulic actuator (2) is applied to the alternate load of beam (6);The dead load force snesor (8) is described quiet for monitoring Load hydraulic actuator (10) is applied to the permanent load of beam (6) and the deformation quantity of beam (6);
The dynamic loading force snesor (3) and dead load force snesor (8) pass through holding wire phase with same data acquisition module Connection.
3. device as claimed in claim 1 or 2, it is characterised in that be also equipped with the left side wall of the bearing plate (7) The axis of guide (15), the left end of the axis of guide (15) inserts the dynamic load load forces sensing afterwards through the dynamic loading increased pressure board (4) In device (3).
4. device as claimed in claim 2, it is characterised in that the dynamic loading hydraulic actuator (2) is moved with a dynamic loading Power module (14) is connected, and the dynamic loading power plant module (14) for the dynamic loading hydraulic actuator (2) for providing kinetic energy;
The dead load hydraulic actuator (10) is connected with a dead load power plant module (13), the dead load power plant module (13) for providing function for the dead load hydraulic actuator (10).
5. device as claimed in claim 4, it is characterised in that the dynamic loading power plant module (14) and dead load power mould Block (13) includes hydraulic power source and proportional valve controller respectively, and the proportional valve controller is connected with the hydraulic power source;
The proportional valve controller is used to control the hydraulic power source to the dynamic loading hydraulic actuator (2) or dead load hydraulic pressure The hydraulic pressure size of actuator (10) output, so as to control the dynamic loading hydraulic actuator (2) or dead load hydraulic actuator (10) magnitude of load of output.
6. device as claimed in claim 5, it is characterised in that also including test control module, the test control module point It is not connected with dynamic loading power plant module (14) and dead load power plant module (13), for the dynamic loading power plant module (14) Control signal is sent with dead load power plant module (13), the default size of dynamic loading power plant module (14) output is controlled respectively Alternate load gives dynamic loading hydraulic actuator (2), and the perseverance for controlling the default size of dead load power plant module (13) output Determine load and give dead load force snesor (8).
7. device as claimed in claim 6, it is characterised in that in the test control module and dynamic loading power plant module (14) Proportional valve controller be connected, the test control module is connected with the proportional valve controller in dead load power plant module (13) Connect.
8. device as claimed in claims 6 or 7, it is characterised in that the test control module is waveform generator;
The beam (6) is rubber blanket.
CN201621067739.5U 2016-09-20 2016-09-20 A kind of fatigue experimental device of beam Active CN206208678U (en)

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Application Number Priority Date Filing Date Title
CN201621067739.5U CN206208678U (en) 2016-09-20 2016-09-20 A kind of fatigue experimental device of beam

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109060548A (en) * 2018-09-25 2018-12-21 福建省永正工程质量检测有限公司 A kind of concrete test block compression strength detection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109060548A (en) * 2018-09-25 2018-12-21 福建省永正工程质量检测有限公司 A kind of concrete test block compression strength detection device
CN109060548B (en) * 2018-09-25 2021-03-02 福建省永正工程质量检测有限公司 Concrete test block compressive strength check out test set

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