CN103674527A - Underbed landing leg fatigue test device and method - Google Patents
Underbed landing leg fatigue test device and method Download PDFInfo
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- CN103674527A CN103674527A CN201310646273.9A CN201310646273A CN103674527A CN 103674527 A CN103674527 A CN 103674527A CN 201310646273 A CN201310646273 A CN 201310646273A CN 103674527 A CN103674527 A CN 103674527A
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Abstract
The invention relates to the technical field of constructional engineering machines, in particular to an underbed landing leg fatigue test device and method. The underbed landing leg fatigue test device and method are used for testing fatigue performance of an underbed landing leg. The underbed landing leg fatigue test device comprises a test base platform, a rotary supporting part, a rotary table, a loading arm, an arm frame actuator and a loading actuator, wherein the underbed landing leg is arranged on the test base platform in a supporting mode during testing; the rotary supporting part is detachably installed on the underbed landing leg, and the center of the rotary supporting part is coaxial with the rotary center of the underbed landing leg; the rotary table is located on the rotary supporting part and is in pivot joint with the rotary supporting part; one end of the loading arm is hinged to the rotary table; the two ends of the arm frame actuator are hinged to the loading arm and the rotary table respectively; and the two ends of the loading actuator are hinged to the test base platform and the other end of the loading arm respectively. During testing, the loading actuator exerts test loads equivalent to those of an actual operation work condition on the underbed landing leg according to a pre-collected load spectrum so that the fatigue performance of the underbed landing leg can be tested.
Description
Technical field
The present invention relates to constructional engineering machinery technical field, particularly a kind of underframe supporting leg fatigue experimental device and method.
Background technology
At present, in arm support engineering machinery, as pump truck, in the course of work of crane, conventionally adopting underframe supporting leg to support gets on the bus, take pump truck as example, during its work, be to support the jib on getting on the bus and getting on the bus by underframe supporting leg, and pump truck is when delivering concrete, because can producing to impact to conveyance conduit, concrete make jib can produce low-frequency vibration at vertical direction and horizontal direction, thereby the acting force that makes underframe supporting leg can be subject to alternation impacts, thereby can there is crackle because of fatigue damage in underframe supporting leg after using certain hour, even fracture, and then entail dangers to safety in production.
In order to prevent that the problems referred to above from appearring in underframe supporting leg, can because of fatigue damage, there is at underframe supporting leg the underframe supporting leg that more renews before crackle or fracture, therefore, the fatigue behaviour that how to record accurately underframe supporting leg becomes current urgent problem.
Summary of the invention
The object of the present invention is to provide a kind of underframe supporting leg fatigue experimental device and method, for recording the fatigue behaviour of underframe supporting leg.
To achieve these goals, the invention provides following technical scheme:
A underframe supporting leg fatigue experimental device, comprising:
Test base station, during test, underframe supporting leg props up and is located on described test base station;
Be removably installed in the revolution support member on described underframe supporting leg, and the center of described revolution support member is coaxial with the centre of gyration of described underframe supporting leg;
Be positioned on described revolution support member and with the turntable of described revolution support member pivot joint;
Loading arm, one end of described loading arm and described turntable are hinged;
And jib actuator and loaded actuator, wherein, described jib actuator is hinged with arm body and the described turntable of described loading arm respectively, to support described loading arm; Described loaded actuator is hinged with the other end of described test base station and described loading arm respectively, when test loads, described loaded actuator applies the test load of equivalent actual job operating mode according to the loading spectrum gathering in advance to described underframe supporting leg, to record the fatigue behaviour of described underframe supporting leg.
Preferably, described revolution support member comprises:
Be removably installed in the connecting table on underframe supporting leg;
Be positioned at the swing bearing on described connecting table, the outer ring of described swing bearing is fixedly connected with described connecting table, and the inner ring of described swing bearing is fixedly connected with described turntable.
Preferably, described connecting table comprises:
Two circular flange portions that are oppositely arranged, and offer many groups bolt hole that can be connected different size underframe supporting leg in the described circular flange portion being connected with described underframe supporting leg;
And by described two connecting portions that circular flange portion is connected to one.
Preferably, on described test base station, be provided with a round circular orbit, described underframe supporting leg is when being located on described test base station, and the centre of gyration of described underframe supporting leg is coaxial with the center of described round circular orbit;
A transfer table that can move along described round circular orbit is installed in described round circular orbit, and described transfer table and described loaded actuator are hinged, and described in when test loads, transfer table is fixed on described round circular orbit.
Preferably, described transfer table comprises: be slidably mounted on the movable pulley on described round circular orbit, and be positioned on described movable pulley and by bearing pin and the hinged pedestal of described movable pulley, described pedestal is fixedly connected with described loaded actuator.
Preferably, described loaded actuator is by a joint flange being combined into by two semi-circular disks and several being bolted on described pedestal.
Preferably, described round circular orbit comprises: coaxial outer loop orbit and interior loop orbit, and described outer loop orbit two faces relative with interior loop orbit offer respectively annular groove, and described movable pulley is slidably mounted in described two annular grooves.
Preferably, on described test base station, be provided with along a circular trace a plurality of mount pads that distribute, described underframe supporting leg when being located on described test base station, the centre of gyration of described underframe supporting leg with the center of described annular track with corresponding; And at the trial described loaded actuator and described in one of them mount pad hinged.
Further, above-mentioned underframe supporting leg fatigue experimental device also comprises: the controller being connected with described jib actuator signal with described loaded actuator respectively, loaded actuator and described jib actuator order about described loading arm and swing up and down in certain angular range described in described controller Collaborative Control.
The present invention also provides a kind of underframe supporting leg fatigue test method simultaneously, comprising: test preparatory stage and test load phase; Wherein,
The described test preparatory stage comprises: underframe supporting leg is propped up and is located on described test base station; Revolution support member is removably installed on described underframe supporting leg, and the center of described revolution support member is coaxial with the centre of gyration of described underframe supporting leg; Turntable is installed on described revolution support member; One end of loading arm and described turntable is hinged; Jib actuator is hinged with arm body and the described turntable of described loading arm respectively, to support described loading arm; And loaded actuator is hinged with the other end of described test base station and described loading arm respectively; And the loading spectrum that gathers equivalent actual job operating mode;
Test load phase comprises: described loaded actuator applies test load according to described loading spectrum to described underframe supporting leg, to record the fatigue behaviour of described underframe supporting leg.
While using above-mentioned underframe supporting leg fatigue experimental device to carry out torture test to underframe supporting leg, first gather the loading spectrum of equivalent actual job operating mode and underframe supporting leg is propped up and is located on test base station, then revolution support member is fixedly installed on underframe supporting leg, turntable is installed on revolution support member, loading arm is articulated with on turntable and by jib actuator and is supported, finally that loaded actuator is hinged with test base station and loading arm respectively; When test loads, loaded actuator is according to the loading spectrum of the equivalent actual job operating mode gathering in advance, by loading arm, underframe supporting leg is applied the test load of equivalent actual condition, pass through the stressing conditions of simulation underframe supporting leg under actual job operating mode, thereby record exactly the fatigue behaviour of underframe supporting leg; Secondly, underframe supporting leg is being carried out in torture test process, can find out design defect or the life-span weakness of underframe supporting leg, thereby can optimize the design of underframe supporting leg, and then improving the serviceable life of underframe supporting leg; Again, above-mentioned underframe supporting leg fatigue experimental device simple in structure, simulation loading is simple to operate, and in environment, carries out the torture test of underframe supporting leg in the open, makes more to press close to the true application scenario of underframe supporting leg, effectively improves the reliability of torture test.
Accompanying drawing explanation
The front view of a kind of underframe supporting leg fatigue experimental device that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1;
Fig. 3 is the stereographic map of connecting table in Fig. 2;
Fig. 4 is the enlarged drawing in B region in Fig. 1;
Fig. 5 is loaded actuator and a kind of annexation figure that tests base station in Fig. 1;
Fig. 6 is the stereographic map of transfer table in Fig. 5;
Fig. 7 is C-C direction cut-open view in Fig. 6;
Fig. 8 is loaded actuator and the another kind of annexation figure that tests base station in Fig. 1.
Reference numeral:
1-tests base station, the outer loop orbit of 11-, and loop orbit in 12-,
2-underframe supporting leg, 3-turns round support member, 31-connecting table,
32-swing bearing, 4-turntable, 5-loading arm,
6-jib actuator, 7-loaded actuator, 71-cylinder tube,
72-cylinder rod, 8-transfer table, 81-movable pulley,
82-pedestal, 83-joint flange, 9-mount pad.
Embodiment
In order to record the fatigue behaviour of underframe supporting leg, the invention provides a kind of underframe supporting leg fatigue experimental device, this underframe supporting leg fatigue experimental device comprises: for the test base station of underframe supporting leg is installed, be removably installed in the revolution support member on underframe supporting leg, turntable with the pivot joint of revolution support member, the loading arm that one end and turntable are hinged, two ends respectively hinged with loading arm and turntable, with the jib actuator of supporting loading arm, and the loaded actuator hinged with the other end of test base station and loading arm respectively; When test loads, loaded actuator applies the test load of equivalent actual job operating mode to underframe supporting leg by loading arm, to record the fatigue behaviour of underframe supporting leg.
The arm support engineering machinery that underframe supporting leg fatigue experimental device provided by the invention is applicable to adopt underframe supporting leg to support gets on the bus, as pump truck and crane etc., for convenience, is below described as subjects take the underframe supporting leg of pump truck.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
Refer to Fig. 1, the front view of a kind of underframe supporting leg fatigue experimental device providing for the embodiment of the present invention; This underframe supporting leg fatigue experimental device comprises:
Be removably installed in the revolution support member 3 on underframe supporting leg 2, and the center of revolution support member 3 is coaxial with the centre of gyration of underframe supporting leg 2;
Be positioned on revolution support member 3 and with the turntable 4 of revolution support member 3 pivot joints;
Loading arm 5, one end of loading arm 5 and turntable 4 are hinged;
And jib actuator 6 and loaded actuator 7, wherein, jib actuator 6 is hinged with arm body and the turntable 4 of loading arm 5 respectively, with supporting loading arm 5; Loaded actuator 7 is hinged with the other end of test base station 1 and loading arm 5 respectively, and when test loads, loaded actuator 7 applies the test load of equivalent actual job operating mode according to the loading spectrum gathering in advance to underframe supporting leg 2, to record the fatigue behaviour of underframe supporting leg 2.
During concrete enforcement, refer to Fig. 2 and Fig. 4, wherein, Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1; Fig. 4 is the enlarged drawing in B region in Fig. 1; Underframe supporting leg 2 as subjects can be transported on test base station 1 by trailer or hoisting device, and each support oil cylinder of underframe supporting leg 2 is opened to support underframe supporting leg 2.After 2 installations of underframe supporting leg, according to order from top to bottom, revolution support member 3 is fixedly installed on underframe supporting leg 2, turntable 4 is installed on revolution support member 3, and one end of loading arm 5 is articulated with on turntable 4, loading arm 5 is equivalent in pump truck for supporting the jib of concrete conveying pipe, requirement has preferably structural strength and endurance quality, in one end of loading arm 5 and turntable 4, needs transfer gantry or other hoisting device to be sling after hinged; Then jib actuator 6 is hinged with arm body and the turntable 4 of loading arm 5 respectively, in order to supporting loading arm 5; Finally that loaded actuator 7 is hinged with the other end of test base station 1 and loading arm 5 respectively.Above-mentioned loaded actuator 7 is specially oil cylinder, cylinder or by lead screw transmission mechanism, the rack and pinion drive mechanism of driven by servomotor, and above-mentioned jib actuator 6 is specially oil cylinder, cylinder or by lead screw transmission mechanism, the rack and pinion drive mechanism of driven by servomotor.In the underframe supporting leg fatigue experimental device shown in Fig. 1, loaded actuator 7 is oil cylinder, and the cylinder tube 71 of this oil cylinder is hinged with test base station 1, and the cylinder rod 72 of this oil cylinder is hinged with the other end of loading arm 5; Or the cylinder tube 71 of this oil cylinder is hinged with the other end of loading arm 5, the cylinder rod 72 of this oil cylinder is hinged with test base station 1.In the underframe supporting leg fatigue experimental device shown in Fig. 1, above-mentioned jib actuator 6 is oil cylinder, and the cylinder tube of this oil cylinder and turntable 4 are hinged, and the arm body of the cylinder rod of this oil cylinder and loading arm 5 is hinged; Or the arm body of the cylinder tube of this oil cylinder and loading arm 5 is hinged, the cylinder rod of this oil cylinder and turntable 4 are hinged.
It should be noted that, above-mentioned test base station 1 can or be the level ground with some strength and hardness for reinforced concrete bed, cast iron base station; In addition, in above-mentioned underframe supporting leg fatigue experimental device, except underframe supporting leg 2, all the other all parts there is desirable intensity and permanance, all parts except underframe supporting leg 2 all had much larger than the serviceable life of underframe supporting leg 2.
When test loads, the loading spectrum that loaded actuator 7 bases gather in advance, the test load that applies equivalent actual job operating mode by 5 pairs of underframe supporting legs 2 of loading arm; Particularly, because of the final load bearing component of underframe supporting leg 2 as pump truck, its stressing conditions can pass through building site field survey, power after measuring is carried out to data processing, can obtain the loading spectrum of equivalent actual condition, loaded actuator 7 applies test load according to this loading spectrum to underframe supporting leg 2, simulates the stressing conditions of underframe supporting leg 2 under actual condition, thereby can record the fatigue behaviour of underframe supporting leg 2; In addition, underframe supporting leg 2 is being carried out in torture test process, can find out underframe supporting leg 2 defect and life-span weakness in design, thereby can optimize the design of underframe supporting leg 2, and then can reach the object that improves underframe 2 serviceable lifes of supporting leg and safety in utilization; In addition, by Collaborative Control loaded actuator 7 and jib actuator 6, order about loading arm 5 swings up and down in certain angular range, to change the moment of flexure of loading arm 5 in same angle of revolution, thereby actual condition can more be approached record the fatigue behaviour of underframe supporting leg 2.
It is worth mentioning that; above-mentioned loading arm 5 weight conventionally can be less than the weight of the jib of pump truck; accuracy for warranty test; need additional weight or counterweight to eliminate weight difference between loading arm 5 and the jib of pump truck; counterweight or counterweight can be suspended on underframe supporting leg 2 or on loading arm 5; concrete distribution of weight and setting position can be by measuring oil cylinder counter-force (calculating oil cylinder counter-force by measuring fuel pressure gage) and calculating to derive and determine; specifically be well known to those skilled in the art, therefore do not describe at this.But, while hanging on loading arm 5 because of counterweight, the gravity of counterweight also can produce additional bending moment, and the arm of force of described additional bending moment can change along with pumping of loading arm 5, cause above-mentioned calculating derivation more complicated, therefore, preferably scheme is that counterweight or counterweight hang on underframe supporting leg 2, and can be divided into several miniweights dispersed placement.
In the above-described embodiment, the bottom of revolution support member 3 is fixedly connected with underframe supporting leg 2, and the revolution center of support member 3 and the centre of gyration of underframe supporting leg 2 are coaxial, top and turntable 4 pivot joints of revolution support member 3, turntable 4 is rotated around the centre of gyration line OO of underframe supporting leg 2, thereby can change the angle of revolution of loading arm 5.Please continue to refer to Fig. 2, in a kind of preferred implementation, revolution support member 3 adopts split-type structural; Particularly, revolution support member 3 comprises: be removably installed in the connecting table 31 on underframe supporting leg 2, be positioned at the swing bearing 32 on connecting table 31, the outer ring of swing bearing 32 is fixedly connected with connecting table 31, and the inner ring of swing bearing 32 is fixedly connected with turntable 4; So design, when the underframe supporting leg 2 to different size carries out torture test, only needs replacing connecting table 31 can make to turn round support member 3 and mates with underframe supporting leg 2, can expand the scope of application of above-mentioned underframe supporting leg fatigue experimental device.
Referring to Fig. 3, is the stereographic map of connecting table in Fig. 2; In a kind of preferred implementation, connecting table 31 comprises: two circular flange portions that are oppositely arranged, and in the circular flange portion being connected with underframe supporting leg 2, offer many groups bolt hole that can be connected different size underframe supporting leg 2; And the connecting portion that two circular flange portions are connected to one; So design, can make the underframe supporting leg 2 of the multiple different size of same connecting table 31 coupling, thereby expands further the scope of application of above-mentioned underframe supporting leg fatigue experimental device.
In the respective embodiments described above, loaded actuator 7 is directly hinged with test base station 1, for example, in the underframe supporting leg fatigue experimental device shown in Fig. 1, loaded actuator 7 adopts oil cylinder, cylinder rod 72 one end of this oil cylinder are hinged with test base station 1, and cylinder tube 71 one end of this oil cylinder are hinged with loading arm 5.But being not limited to this, referring to Fig. 5, is a kind of annexation figure of loaded actuator in Fig. 1 with test base station; Fig. 6 is the stereographic map of transfer table in Fig. 5; In a kind of preferred implementation, on above-mentioned test base station 1, be provided with a round circular orbit, underframe supporting leg 2 is on being located at test base station 1 time, and the centre of gyration of underframe supporting leg 2 is coaxial with the center of round circular orbit; And a transfer table that can move along round circular orbit 8 is installed in described round circular orbit, transfer table 8 is hinged with loaded actuator 7, and transfer table 8 is fixed on described round circular orbit when test loads.Particularly, referring to Fig. 7, is C-C direction cut-open view in Fig. 6; In a kind of preferred implementation, above-mentioned transfer table 8 comprises: be slidably mounted on the movable pulley 81 on described round circular orbit, and be positioned on movable pulley 81 and by bearing pin and the hinged pedestal 82 of movable pulley 81, pedestal 82 is fixedly connected with loaded actuator 7.In Fig. 7, movable pulley 81 has the disk of bracket for top, and on bracket, has pin shaft hole, and pedestal 82 is installed on movable pulley 81 by bearing pin, and pedestal 82 can be rotated around bearing pin within the scope of certain angle.So design, can change the moment of flexure of loading arm 5 in same angle of revolution, thereby can more approach actual condition and record the fatigue behaviour of underframe supporting leg 2, improves the accuracy of test underframe supporting leg 2 fatigue behaviours.
Please continue to refer to Fig. 6 and Fig. 7, in a kind of preferred described mode, above-mentioned loaded actuator 7 is by a joint flange being combined into by two semi-circular disks 83 and several being bolted on pedestal 82; So design, makes loaded actuator 7 be easy to be arranged on pedestal 82 and stable connection, is convenient in addition dismounting.
Please continue to refer to Fig. 4 and Fig. 5, above-mentioned round circular orbit comprises: coaxial outer loop orbit 11 and interior loop orbit 12, and two faces that outer loop orbit 11 is relative with interior loop orbit 12 offer respectively annular groove, and movable pulley 81 is slidably mounted in described two annular grooves.In the time need to adjusting the angle of revolution of loading arm 5, can make movable pulley 81 along round circular orbit relative motion, and make at the trial movable pulley 81 be fixed on round circular orbit.The motion of above-mentioned movable pulley 81 in round circular orbit specifically can drive by Manual-pushing or by motor, movable pulley 81 can stop on round circular orbit with crossing stop means (as positive stop or spacer pin) or clamping device, specifically be well known to those skilled in the art, no further details to be given herein.
In the above-described embodiment, can record the fatigue behaviour of angle of revolution scope underframe supporting leg 2 in 0 °～360 ° of loading arm 5, but in actual applications, because the angle of revolution of loading arm 5 only adopts wherein several fixed angles conventionally, therefore, while utilizing above-mentioned underframe supporting leg fatigue experimental device to carry out torture test to underframe supporting leg, only need record corresponding underframe supporting leg 2 fatigue behaviours in angle of revolution of several typical loading arms 5; Referring to Fig. 8, is the another kind of annexation figure of loaded actuator in Fig. 1 with test base station; In a kind of preferred implementation, on above-mentioned test base station 1, be provided with along a circular trace a plurality of mount pads 9 that distribute, underframe supporting leg 2 is when being located on test base station 1, and the centre of gyration of underframe supporting leg 2 is coaxial with the center of described annular track; And loaded actuator 7 is hinged with one of them mount pad 9 at the trial.In Fig. 8, on test base station 1, along a circular trace, be equipped with eight mount pads 9, at the trial, loaded actuator 7 is hinged with one of them mount pad 9, as need to be changed the angle of revolution of loading arm time, can make loaded actuator 7 separated with current mount pad 9, loading arm 5 turns over after certain angle, then makes loaded actuator 7 and another one mount pad 9 hinged.
On the basis of the respective embodiments described above, above-mentioned underframe supporting leg fatigue experimental device also comprises: the controller (not shown in FIG.) being connected with jib actuator 6 signals with loaded actuator 7 respectively, described controller can Collaborative Control loaded actuator 7 and described jib actuator 6 order about loading arm 5 swinging up and down in certain angle.So can change the moment of flexure of loading arm 5 in same angle of revolution, thereby can more approach actual condition and record the fatigue behaviour of underframe supporting leg 2.
The embodiment of the present invention also provides a kind of underframe supporting leg fatigue test method simultaneously, comprising: test preparatory stage and test load phase; Wherein,
The test preparatory stage comprises: 2 of underframe supporting legs are located on test base station 1; Revolution support member 3 is removably installed on underframe supporting leg 2, and the center of revolution support member 3 is coaxial with the centre of gyration of underframe supporting leg 2; Turntable 4 is installed on revolution support member 3; One end of loading arm 5 and turntable 4 is hinged; Jib actuator 6 is hinged with arm body and the turntable 4 of loading arm 5 respectively, with supporting loading arm 5; Loaded actuator 7 is hinged with the other end of test base station 1 and loading arm 5 respectively; And the loading spectrum that gathers equivalent actual job operating mode;
Test load phase comprises: loaded actuator 7 applies test load according to loading spectrum to underframe supporting leg 2, to record the fatigue behaviour of underframe supporting leg 2.
In sum, underframe supporting leg fatigue experimental device provided by the invention, for underframe supporting leg is carried out to torture test, to simulate underframe supporting leg, under actual job operating mode, vibrate the impact on underframe supporting leg fatigue strength, by torture test, can obtain the fatigue behaviour of underframe supporting leg.In addition, underframe supporting leg is being carried out to, in the process of torture test, can find out the design defect of underframe supporting leg, thereby can optimize the design of underframe supporting leg, and then can improve reliability and serviceable life that underframe supporting leg moves back.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a underframe supporting leg fatigue experimental device, is characterized in that, comprising:
Test base station, during test, underframe supporting leg props up and is located on described test base station;
Be removably installed in the revolution support member on described underframe supporting leg, and the center of described revolution support member is coaxial with the centre of gyration of described underframe supporting leg;
Be positioned on described revolution support member and with the turntable of described revolution support member pivot joint;
Loading arm, one end of described loading arm and described turntable are hinged;
And jib actuator and loaded actuator, wherein, described jib actuator is hinged with arm body and the described turntable of described loading arm respectively, to support described loading arm; Described loaded actuator is hinged with the other end of described test base station and described loading arm respectively, when test loads, described loaded actuator applies the test load of equivalent actual job operating mode according to the loading spectrum gathering in advance to described underframe supporting leg, to record the fatigue behaviour of described underframe supporting leg.
2. underframe supporting leg fatigue experimental device as claimed in claim 1, is characterized in that, described revolution support member comprises:
Be removably installed in the connecting table on underframe supporting leg;
Be positioned at the swing bearing on described connecting table, the outer ring of described swing bearing is fixedly connected with described connecting table, and the inner ring of described swing bearing is fixedly connected with described turntable.
3. underframe supporting leg fatigue experimental device as claimed in claim 2, is characterized in that, described connecting table comprises:
Two circular flange portions that are oppositely arranged, and offer many groups bolt hole that can be connected different size underframe supporting leg in the described circular flange portion being connected with described underframe supporting leg;
And by described two connecting portions that circular flange portion is connected to one.
4. the underframe supporting leg fatigue experimental device as described in as arbitrary in claim 1-3, is characterized in that,
On described test base station, be provided with a round circular orbit, described underframe supporting leg is when being located on described test base station, and the centre of gyration of described underframe supporting leg is coaxial with the center of described round circular orbit;
A transfer table that can move along described round circular orbit is installed in described round circular orbit, and described transfer table and described loaded actuator are hinged, and described in when test loads, transfer table is fixed on described round circular orbit.
5. underframe supporting leg fatigue experimental device as claimed in claim 4, it is characterized in that, described transfer table comprises: be slidably mounted on the movable pulley on described round circular orbit, and be positioned on described movable pulley and by bearing pin and the hinged pedestal of described movable pulley, described pedestal is fixedly connected with described loaded actuator.
6. underframe supporting leg fatigue experimental device as claimed in claim 5, is characterized in that, described loaded actuator is by a joint flange being combined into by two semi-circular disks and several being bolted on described pedestal.
7. underframe supporting leg fatigue experimental device as claimed in claim 5, it is characterized in that, described round circular orbit comprises: coaxial outer loop orbit and interior loop orbit, and two faces that described outer loop orbit is relative with interior loop orbit offer respectively annular groove, and described movable pulley is slidably mounted in described two annular grooves.
8. the underframe supporting leg fatigue experimental device as described in as arbitrary in claim 1-3, it is characterized in that, on described test base station, be provided with along a circular trace a plurality of mount pads that distribute, described underframe supporting leg is when being located on described test base station, and the centre of gyration of described underframe supporting leg is coaxial with the center of described annular track; And at the trial described loaded actuator and described in one of them mount pad hinged.
9. underframe supporting leg fatigue experimental device as claimed in claim 1, it is characterized in that, also comprise: the controller being connected with described jib actuator signal with described loaded actuator respectively, loaded actuator and described jib actuator order about described loading arm and swing up and down in certain angular range described in described controller Collaborative Control.
10. a underframe supporting leg fatigue test method, is characterized in that, comprising: test preparatory stage and test load phase; Wherein,
The described test preparatory stage comprises: underframe supporting leg is propped up and is located on described test base station; Revolution support member is removably installed on described underframe supporting leg, and the center of described revolution support member is coaxial with the centre of gyration of described underframe supporting leg; Turntable is installed on described revolution support member; One end of loading arm and described turntable is hinged; Jib actuator is hinged with arm body and the described turntable of described loading arm respectively, to support described loading arm; Loaded actuator is hinged with the other end of described test base station and described loading arm respectively; And the loading spectrum that gathers equivalent actual job operating mode;
Test load phase comprises: described loaded actuator applies test load according to described loading spectrum to described underframe supporting leg, to record the fatigue behaviour of described underframe supporting leg.
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| CN104832488A (en) * | 2014-12-12 | 2015-08-12 | 北汽福田汽车股份有限公司 | Air cylinder and pump truck fatigue testing apparatus comprising same |
| CN105628412A (en) * | 2014-10-28 | 2016-06-01 | 中联重科股份有限公司 | Testing mechanism for engineering machinery and testing method thereof |
| CN105675238A (en) * | 2015-12-21 | 2016-06-15 | 湖南三一路面机械有限公司 | Cantilever crane vibration test device |
| CN106644321A (en) * | 2016-12-08 | 2017-05-10 | 广东富华机械装备制造有限公司 | Guiding arm rack testing device |
| CN108332952A (en) * | 2017-01-20 | 2018-07-27 | 中联重科股份有限公司 | Fatigue test device for arm support |
| CN109514601A (en) * | 2018-10-25 | 2019-03-26 | 杭州电子科技大学 | The plain fatigue of industrial robot arm configuration and accelerate fatigue test method and device |
| CN113155433A (en) * | 2021-04-30 | 2021-07-23 | 安徽博微长安电子有限公司 | Leveling leg dynamic loading testing arrangement |
| CN113942942A (en) * | 2021-09-29 | 2022-01-18 | 中联重科股份有限公司 | Load loading device and method |
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| CN105628412A (en) * | 2014-10-28 | 2016-06-01 | 中联重科股份有限公司 | Testing mechanism for engineering machinery and testing method thereof |
| CN105628412B (en) * | 2014-10-28 | 2018-03-23 | 中联重科股份有限公司 | Mechanism for testing and its method of testing for engineering machinery |
| CN104832488A (en) * | 2014-12-12 | 2015-08-12 | 北汽福田汽车股份有限公司 | Air cylinder and pump truck fatigue testing apparatus comprising same |
| CN105675238A (en) * | 2015-12-21 | 2016-06-15 | 湖南三一路面机械有限公司 | Cantilever crane vibration test device |
| CN105675238B (en) * | 2015-12-21 | 2019-09-06 | 湖南三一路面机械有限公司 | A kind of vibration of arm experimental rig |
| CN106644321A (en) * | 2016-12-08 | 2017-05-10 | 广东富华机械装备制造有限公司 | Guiding arm rack testing device |
| CN108332952A (en) * | 2017-01-20 | 2018-07-27 | 中联重科股份有限公司 | Fatigue test device for arm support |
| CN108332952B (en) * | 2017-01-20 | 2019-08-09 | 中联重科股份有限公司 | Fatigue test device for arm support |
| CN109514601A (en) * | 2018-10-25 | 2019-03-26 | 杭州电子科技大学 | The plain fatigue of industrial robot arm configuration and accelerate fatigue test method and device |
| CN113155433A (en) * | 2021-04-30 | 2021-07-23 | 安徽博微长安电子有限公司 | Leveling leg dynamic loading testing arrangement |
| CN113942942A (en) * | 2021-09-29 | 2022-01-18 | 中联重科股份有限公司 | Load loading device and method |
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