CN109540491A - A kind of excavator turntable fatigue test program spectrum loading device - Google Patents
A kind of excavator turntable fatigue test program spectrum loading device Download PDFInfo
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- CN109540491A CN109540491A CN201811555121.7A CN201811555121A CN109540491A CN 109540491 A CN109540491 A CN 109540491A CN 201811555121 A CN201811555121 A CN 201811555121A CN 109540491 A CN109540491 A CN 109540491A
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000009661 fatigue test Methods 0.000 claims abstract description 42
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 238000002474 experimental method Methods 0.000 claims abstract description 30
- 238000001228 spectrum Methods 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of excavator turntable fatigue test programs to compose loading device, including testing stand, turntable fatigue sample, portal frame component, actuation device assembly and experiment pedestal；Testing stand includes the first base station and the second base station, and the first base station is installed on experiment pedestal, and second base station one end and the first base station are hinged；Turntable fatigue sample is mounted on the second base station；Portal frame component is installed on experiment pedestal；Actuation device assembly one end is installed on portal frame component, and the other end is mounted in turntable fatigue sample.The present invention is that fatigue test is carried out under its local coordinate system, it is contemplated that excavator posture changes the influence to turntable fatigue sample test result, and turntable fatigue sample is made to be more nearly actual stress；By movably testing the fatigue test board of base station and variable-angle, makes the fatigue test of the turntable of different model that same device can be used and loaded, improve the versatility of experimental rig, apparatus structure is simple and easy to maintain.
Description
Technical field
The invention belongs to machinery equipment field, are related to mechanical fatigue test, and in particular to a kind of excavator turntable fatigue examination
Test program spectrum loading device.
Background technique
Important component of the turntable as excavator is mainly used for each base part of connecting excavator and bears from work
Make the alternating load of device, the quality of structure directly affects the service life and reliability of excavator.Excavator turntable
Fatigue crack is the main reason for causing excavator turntable structure to destroy, and carrying out fatigue life test to turntable is to guarantee its structure
The important means of safety and service life.
It needs to be fixed on turntable under some posture when doing fatigue test, be fixed for bearing loading direction, work appearance
The constant component test posture of state is easy to determine, but the posture moment is changing excavator in actual operation, and test posture is not
Easily determine.The structure of the turntable of different model itself, fatigue test program spectrum, fatigue test spectrum load angle etc. phase not to the utmost
Together.
In conclusion being badly in need of seeking one kind reasonably, suitable for different type of machines turntable, variety classes fatigue test program
The loading device of spectrum, the fatigue test of component is specially chosen for excavator and reliable life estimates research and provides basis.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of excavator turntable fatigue tests
Program composes loading device, to solve in the prior art lack for excavator turntable fatigue test loading device, excavator turn
The problem of platform fatigue test is difficult to accurate simulation.
In order to solve the above-mentioned technical problem, the application, which adopts the following technical scheme that, is achieved:
A kind of excavator turntable fatigue test program spectrum loading device, including testing stand, portal frame component, actuation device assembly
With experiment pedestal；
The testing stand is used on experiment pedestal be arranged in turntable fatigue test that be loaded into turntable tired for actuation device assembly
The tilt angle of the angled working plane of dynamic loading on labor test specimen, the angled working plane passes through the testing stand
Mechanical interlocking jack in the angle of first base station and the second base station is adjusted；
The portal frame component, which is used on experiment pedestal be arranged actuation device assembly in turntable fatigue test and is loaded into, to be turned
The working space of dynamic loading in platform fatigue sample, the working space are the dragon of the experiment pedestal, portal frame component
The space that the crossbeam of door frame column and portal frame component surrounds；
The actuation device assembly is installed on the stringer bottom surface of the portal frame component in the working space, the work
Installation site and actuator group of the horizontal installation position of dynamic device assembly by the stringer of the portal frame component on crossbeam
Installation site of the part on the stringer of portal frame component is adjusted, and the vertically-mounted position of the actuation device assembly passes through institute
Installation site of the crossbeam for the portal frame component stated on the gantry pillar of the portal frame component is adjusted, described
Action tank in actuation device assembly is used to apply turntable fatigue sample the dynamic loading provided in the test of turntable load spectrum fatigue,
Carry out fatigue test.
In the more specifically implementation of above-mentioned technical proposal, excavator turntable fatigue test program spectrum of the invention
Loading device include testing stand, portal frame component, actuation device assembly and experiment pedestal, the testing stand include the first base station and
Second base station, first base station are installed on the experiment pedestal, described second base station one end and described first
Base station is hinged；
The portal frame component is installed on the experiment pedestal, the crossbeam vertical position of the portal frame component
It is adjustable；
The actuation device assembly top horizontal position is adjustably installed on the stringer of the portal frame component；
The stringer horizontal position of the portal frame component is adjustably installed on the crossbeam of the portal frame component.
The present invention also has following technical characteristic:
Specifically, being equipped with turntable fatigue sample on second base station, the turntable fatigue sample passes through first
Bolt group is mounted on second base station.
Specifically, first base station is mounted at experiment pedestal and is cut with scissors with the second base station by the first pin shaft
It connects.
Specifically, being also equipped with mechanical interlocking jack, the machinery between first base station and the second base station
The piston rod and second base station for locking jack are articulated with boss, and the piston seat of the mechanical interlocking jack passes through
Bolt is mounted on first base station.
Specifically, the portal frame component includes two groups of portal frames, the portal frame is by being detachably arranged in reality
It tests the gantry pillar on pedestal and the crossbeam being mounted on the gantry pillar is constituted；
The portal frame component further includes the stringer being installed on the crossbeam.
Specifically, the crossbeam is installed on the gantry pillar by the way that the second bolt group is height-adjustable；
The stringer is installed on the crossbeam by the way that third bolt group horizontal position is adjustable.
Specifically, actuation device assembly described in two groups, every group of the actuation device assembly setting includes the oil successively installed
Cylinder bottom seat, action tank and axle sleeve；
The cylinder pedestal is installed on the stringer by the way that the 4th bolt group horizontal position is adjustable；
The axle sleeve is hinged by the second pin shaft with the turntable fatigue sample.
Specifically, spherical hinge is also equipped between the cylinder pedestal and the action tank, the spherical hinge
Both ends are affixed with the cylinder pedestal and institute's action tank respectively.
Specifically, the action tank is hydraulic servo oil cylinder.
Specifically, second base station is equipped with turntable baffle close to the side of the first pin shaft.
Compared with prior art, the present invention beneficial has the technical effect that
(I) excavator in actual work, posture time changing, and dynamic on different structure and the excavator turntable of size
Both arm oil cylinder and swing arm and the hinged angle of turntable be not also identical.However when carrying out fatigue test to excavator turntable, only
The load of the load provided in fatigue test load spectrum can be carried out to turntable fatigue sample in the case where determining posture, error is can not
It avoids, the device of the invention can change the load angle of load, can be closer to different structure and the turntable of size in reality
Loading angle and load condition in the work of border；And it is more that the present invention can be such that turntable fatigue sample provides in fatigue test spectrum
Load spectrum fatigue test, therefore, Ke Yijin are carried out under the average value of corresponding angle when load maximum in a real work circulation
One step avoids posture from determining caused error, to guarantee that the result of turntable fatigue test tends to be conservative and effective, it is ensured that turn
The service life boundary of platform fatigue sample；
(II) excavator turntable fatigue test program of the invention spectrum loading device passes through removable and variable-angle reality
The fatigue test board for testing base station and variable-angle makes the fatigue test of the turntable of different model that same device can be used and is added
It carries, and is easy to carry out test load using fatigue test spectrum, improve the versatility of experimental rig；
(III) excavator turntable fatigue test program of the invention spectrum loading device component is detachably installed, and is conveniently replaceable
Easily worn part, apparatus structure are simple and easy to maintain.
Detailed description of the invention
Fig. 1 is whole schematic view of the front view of the invention；
Fig. 2 is axis side structure schematic diagram of the invention；
Fig. 3 is the right side structural representation of Fig. 1；
Fig. 4 is the overlooking structure diagram of Fig. 1；
The meaning of each label in figure are as follows: 1- testing stand, 2- turntable fatigue sample, 3- portal frame component, 4- actuator group
Part, 5- test pedestal；
The first base station of 11-, the second base station of 12-, the first pin shaft of 13-, 14- the first bolt group, 15- mechanical interlocking jack,
16- boss, 17- turntable baffle；
31- gantry pillar, 32- crossbeam, 33- stringer, 34- the second bolt group, 35- third bolt group；
41- cylinder pedestal, 42- action tank, 43- axle sleeve, the 4th bolt group of 44-, the second pin shaft of 45-, 46- spherical shape hinge.
Explanation is further explained in detail to particular content of the invention with reference to embodiments.
Specific embodiment
The excavator turntable fatigue test journey that excavator turntable fatigue test program spectrum loading device of the invention is loaded
Sequence spectrum acquisition methods according to application No. is the invention of 201811007714.X " excavator turntable equivalent force time history obtain and
Method for sorting in fatigue test spectrum method for sorting " carries out.
The excavator turntable fatigue test journey that excavator turntable fatigue test program spectrum loading device of the invention is loaded
The conventional acquisition methods that the acquisition methods of sequence spectrum can also be composed according to excavator turntable fatigue test in the prior art.
In compliance with the above technical solution, specific embodiments of the present invention are given below, it should be noted that the present invention not office
It is limited to following specific embodiments, all equivalent transformations made on the basis of the technical solutions of the present application each falls within protection model of the invention
It encloses.The present invention is described in further details below with reference to embodiment.
Embodiment 1:
The present embodiment provides a kind of excavator turntable fatigue test program spectrum loading device, as shown in Figures 1 to 4, including
Testing stand 1, portal frame component 3, actuation device assembly 4 and experiment pedestal 5；
Testing stand 1 includes the first base station 11 and the second base station 12, and the first base station 11 is installed on experiment pedestal 5, the second base
12 one end of platform and the first base station 11 are hinged；
Portal frame component 3 is installed on experiment pedestal 5, and 32 vertical position of crossbeam of portal frame component 3 is adjustable；
4 one end horizontal position of actuation device assembly is adjustably installed on the stringer 33 of portal frame component 3；
33 horizontal position of stringer of portal frame component 3 is adjustably installed on the crossbeam 32 of portal frame component 3.
The testing stand 1 of the present embodiment sets up the first base station 11 and the second base station 12 separately, composes loading device to whole fatigue test
Load angle is provided, this load angle is the load angle given in load fatigue test to be added spectrum, and load fatigue test spectrum to be added is logical
The method for crossing following method for sorting or other prior arts is arranged.
The experiment pedestal 5 of the present embodiment provides the installation foundation of whole device, and to portal frame component 3 and is made by bolt
Dynamic device assembly 4 carries out installation fixation.
As a kind of concrete scheme of the present embodiment, turntable fatigue sample is also equipped on second base station 12 of the present embodiment
2, turntable fatigue sample 2 is mounted on the second base station 12 by the first bolt group 14.
The turntable fatigue sample 2 of the present embodiment is directly derived from the various excavator for needing to carry out turntable fatigue experiment, as
The test specimen that loading fatigue test is composed in whole device guarantees the accuracy of excavator turntable fatigue test.
As a kind of concrete scheme of the present embodiment, first base station 11 of the present embodiment is mounted at experiment pedestal
5 and hinged by the first pin shaft 13 with the second base station 12.
As a kind of concrete scheme of the present embodiment, also installed between first base station 11 and the second base station 12 of the present embodiment
There is mechanical interlocking jack 15, the piston rod of mechanical interlocking jack 15 and the second base station 12 are articulated with boss 16, mechanical interlocking
The piston seat of jack 15 is mounted on the first base station 11 by bolt.
As a kind of concrete scheme of the present embodiment, the portal frame component 3 of the present embodiment includes two groups of portal frames, portal frame
It is made of the gantry pillar 31 being detachably arranged on experiment pedestal 5 and the crossbeam 32 being mounted on gantry pillar 31；
Portal frame component 3 further includes the stringer 33 being installed on crossbeam 32.
As a kind of concrete scheme of the present embodiment, the crossbeam 32 of the present embodiment is height-adjustable by the second bolt group 34
It is installed on gantry pillar 31；
Stringer 33 is installed on crossbeam 32 by the way that 35 horizontal positions of third bolt group are adjustable.
The portal frame component 3 of the present embodiment is using the adjustable crossbeam 32 of height and 33 pairs of the adjustable stringer in horizontal position movements
Device assembly 4 carries out affixed installation and stablizes protection, guarantees actuation device assembly 4 to the turntable fatigue sample 2 of different model and size
The load safety of fatigue test spectrum and accurate, while guaranteeing the stress of the uniform turntable fatigue sample 2 of loading fatigue test time spectrum
Uniformly.
As a kind of concrete scheme of the present embodiment, the actuation device assembly 4 of the present embodiment is arranged two groups, every group of actuator group
Part 4 includes cylinder pedestal 41, action tank 42 and the axle sleeve 43 successively installed；
Cylinder pedestal 41 is installed on stringer 33 by the way that 44 horizontal position of the 4th bolt group is adjustable；
Axle sleeve 43 and turntable fatigue sample 2 are hinged by the second pin shaft 45.
As a kind of concrete scheme of the present embodiment, also installed between the cylinder pedestal 41 and action tank 42 of the present embodiment
There is spherical hinge 46,46 both ends of spherical shape hinge are affixed with cylinder pedestal 41 and institute's action tank 42 respectively.
As a kind of concrete scheme of the present embodiment, the action tank 42 of the present embodiment is hydraulic servo oil cylinder.
As a kind of concrete scheme of the present embodiment, second base station 12 of the present embodiment is pacified close to the side of the first pin shaft 13
Equipped with turntable baffle 17.
The action tank 42 of the actuation device assembly 4 of the present embodiment uses hydraulic servo oil cylinder, carries out to turntable fatigue sample 2
The load of fatigue test spectrum, and guarantee that two groups of action tanks 42 apply the turntable fatigue test program time spectrum institute of opposite in phase simultaneously
There is the stabilization of component, and then accurate simulation is carried out to excavator course of work intermediate station stress condition, and action tank 42 is made to exist
Horizontal position on the stringer 33 of portal frame component 3 is adjustable, is further ensured that turntable fatigue sample 2 in loading fatigue test program
The stability of time spectrum and the uniformity of stress.
The use of excavator turntable fatigue test program spectrum loading device of the invention is carried out by following steps:
Step 1: using in turntable and swing arm root junction and receiving approximate with boom cylinder junction a pair of size and
The continually changing force couple role in direction, and by the statistical analysis to force couple role direction, big load effect moment power can be obtained
Load-time history is organized into loading spectrum using the direction as loading direction by even mean direction, as of the invention tired
Labor test procedure spectrum is loaded.The present invention, which carries out the spectrum of fatigue test program used in fatigue test, also can use other this fields
Technical staff's known technology arranges.
Step 2: for the turntable fatigue sample 2 of different model, the second bolt group 34, third bolt group the 35, the 4th are utilized
Bolt group 44 and the bolt Adjustment Tests platform 1 of other installations, turntable fatigue sample 2, portal frame component 3, actuation device assembly 4 exist
The position on pedestal 5 is tested, the turntable fatigue sample 2 on testing stand 1 is between two groups of portal frames, adjusts mechanical interlocking thousand
Jin top 15 makes the first base station 11 be maintained at corresponding turntable fatigue experiment program with the angle of the second base station 12 and composes the load angle provided
Degree fastens the first bolt group 14, turntable fatigue sample 2 is fixed on the second base station 12；
Step 3: (being turntable and swing arm respectively using two hinges of two action tanks 42 to turntable fatigue sample 2
The hinge of hinge and turntable and boom cylinder) carry out fatigue test program spectrum load.Utilize existing servo controller, control
Two 42 loading fatigue test of action tank spectrums are made, two action tanks 42 must apply the turntable fatigue examination of opposite in phase simultaneously
Test program spectrum；
Step 4: after the load and whole experiment process of completing fatigue test spectrum, mechanical interlocking jack 15 and two are shed
The pressure of a action tank 42 is unclamped the first bolt group 14 and the first pin shaft 13, turntable fatigue sample 2 is removed, according to subsequent
Requirement of experiment collects testing result to specially choosing fatigue sample 2 and detecting, with confirm experimental result whether Pass Test standard or
The requirement of product standard.
Embodiment 2:
The present embodiment provides a kind of excavator turntable fatigue test program spectrum loading device, including testing stand 1, portal frame group
Part 3, actuation device assembly 4 and experiment pedestal 5；
Testing stand 1 is used on experiment pedestal 5 be arranged actuation device assembly 4 in turntable fatigue test and is loaded into the examination of turntable fatigue
The angled working plane of dynamic loading on part 2, the tilt angle of angled working plane pass through the first base station 11 of testing stand 1 and the
Mechanical interlocking jack 15 in the angle of two base stations 12 is adjusted；
Portal frame component 3 is used on experiment pedestal 5 be arranged in turntable fatigue test that be loaded into turntable tired for actuation device assembly 4
The working space of dynamic loading on labor test specimen 2, working space are to test pedestal 5, the gantry pillar 31 of portal frame component 3 and dragon
The space that the crossbeam 32 of door frame component 3 surrounds；
Actuation device assembly 4 is installed on 33 bottom surface of stringer of the portal frame component 3 in working space, the water of actuation device assembly 4
Safety holding position passes through installation site and actuation device assembly 4 of the stringer 33 of portal frame component 3 on crossbeam 32 in portal frame group
Installation site on the stringer 33 of part 3 is adjusted, and the vertically-mounted position of actuation device assembly 4 passes through the cross of portal frame component 3
Installation site of the beam 32 on the gantry pillar 31 of portal frame component 3 is adjusted, the action tank 42 in actuation device assembly 4
For applying the dynamic loading provided in the test of turntable load spectrum fatigue to turntable fatigue sample 2, fatigue test is carried out.
The specific structure of the excavator turntable fatigue test program spectrum loading device of the present embodiment and the excavation in embodiment 1
The specific structure that machine turntable fatigue test program composes loading device is identical.
Claims (10)
1. a kind of excavator turntable fatigue test program composes loading device, which is characterized in that including testing stand (1), portal frame group
Part (3), actuation device assembly (4) and experiment pedestal (5)；
The testing stand (1), which is used to be arranged in experiment pedestal (5) actuation device assembly (4) in turntable fatigue test and is loaded into, to be turned
The angled working plane of dynamic loading in platform fatigue sample (2), the tilt angle of the angled working plane pass through described
Mechanical interlocking jack (15) in the first base station (11) of testing stand (1) and the angle of the second base station (12) is adjusted；
The portal frame component (3) is used to that actuation device assembly (4) load in turntable fatigue test to be arranged in experiment pedestal (5)
The working space of dynamic loading on to turntable fatigue sample (2), the working space are the experiment pedestal (5), gantry
The space that the gantry pillar (31) of frame component (3) and the crossbeam (32) of portal frame component (3) surround；
The actuation device assembly (4) is installed on stringer (33) bottom surface of the portal frame component (3) in the working space, institute
The horizontal installation position for the actuation device assembly (4) stated is by the stringer (33) of the portal frame component (3) on crossbeam (32)
Installation site on the stringer (33) of portal frame component (3) of installation site and actuation device assembly (4) be adjusted, it is described
The vertically-mounted position of actuation device assembly (4) is by the crossbeam (32) of the portal frame component (3) in the portal frame group
Installation site on the gantry pillar (31) of part (3) is adjusted, the action tank (42) in the actuation device assembly (4)
For applying the dynamic loading provided in the test of turntable load spectrum fatigue to turntable fatigue sample (2), fatigue test is carried out.
2. excavator turntable fatigue test program as described in claim 1 composes loading device, which is characterized in that the test
Platform (1) includes the first base station (11) and the second base station (12), and first base station (11) is installed on the experiment pedestal (5)
On, described the second base station (12) one end and first base station (11) are hinged；
The portal frame component (3) is installed on the experiment pedestal (5), the crossbeam of the portal frame component (3)
(32) vertical position is adjustable；
Described actuation device assembly (4) the top horizontal position is adjustably installed on the stringer (33) of the portal frame component (3)
On；
Stringer (33) horizontal position of the portal frame component (3) is adjustably installed on the cross of the portal frame component (3)
On beam (32).
3. excavator turntable fatigue test program as claimed in claim 2 composes loading device, which is characterized in that described second
It is also equipped on base station (12) turntable fatigue sample (2), the turntable fatigue sample (2) is removable by the first bolt group (14)
That unloads is installed on second base station (12)；
First base station (11) is mounted at experiment pedestal (5) and passes through the first pin shaft with the second base station (12)
(13) hinged.
4. excavator turntable fatigue test program as claimed in claim 3 composes loading device, which is characterized in that described first
It is also equipped between base station (11) and the second base station (12) mechanical interlocking jack (15), the mechanical interlocking jack (15)
Piston rod and second base station (12) be articulated with boss (16), the mechanical interlocking jack (15) passes through bolt
It is mounted on first base station (11).
5. excavator turntable fatigue test program as claimed in claim 3 composes loading device, which is characterized in that described gantry
Frame component (3) includes two groups of portal frames, and the portal frame is by being detachably arranged in the gantry pillar tested on pedestal (5)
(31) it is constituted with the crossbeam (32) that is mounted on the gantry pillar (31)；
The portal frame component (3) further includes the stringer (33) being installed on the crossbeam (32).
6. excavator turntable fatigue test program as claimed in claim 5 composes loading device, which is characterized in that the crossbeam
(32) it is installed on the gantry pillar (31) by the way that the second bolt group (34) is height-adjustable；
The stringer (33) is installed on the crossbeam (32) by the way that third bolt group (35) horizontal position is adjustable.
7. excavator turntable fatigue test program as claimed in claim 6 composes loading device, which is characterized in that the actuation
Actuation device assembly (4) described in two groups, every group of device assembly (4) setting includes cylinder pedestal (41), the action tank successively installed
(42) and axle sleeve (43)；
The cylinder pedestal (41) is adjustably installed on the stringer (33) by the 4th bolt group (44) horizontal position；
The axle sleeve (43) and the turntable fatigue sample (2) are hinged by the second pin shaft (45).
8. excavator turntable fatigue test program as claimed in claim 7 composes loading device, which is characterized in that the oil cylinder
Be also equipped with spherical hinge (46) between pedestal (41) and the action tank (42), described spherical hinge (46) both ends respectively with
The cylinder pedestal (41) and institute's action tank (42) is affixed.
9. excavator turntable fatigue test program as claimed in claim 7 or 8 composes loading device, which is characterized in that described
Action tank (42) is hydraulic servo oil cylinder.
10. the excavator turntable fatigue test program as described in claim 2~8 any claim composes loading device, special
Sign is that second base station (12) is equipped with turntable baffle (17) close to the side of the first pin shaft (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811555121.7A CN109540491B (en) | 2018-12-19 | 2018-12-19 | Program spectrum loading device for fatigue test of excavator turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811555121.7A CN109540491B (en) | 2018-12-19 | 2018-12-19 | Program spectrum loading device for fatigue test of excavator turntable |
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| Publication Number | Publication Date |
|---|---|
| CN109540491A true CN109540491A (en) | 2019-03-29 |
| CN109540491B CN109540491B (en) | 2024-02-13 |
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| CN201811555121.7A Active CN109540491B (en) | 2018-12-19 | 2018-12-19 | Program spectrum loading device for fatigue test of excavator turntable |
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| CN110455513A (en) * | 2019-08-20 | 2019-11-15 | 三一汽车起重机械有限公司 | Turntable experimental rig and system |
| CN110455513B (en) * | 2019-08-20 | 2021-04-16 | 三一汽车起重机械有限公司 | Rotary table testing device and system |
| CN113970485A (en) * | 2021-10-29 | 2022-01-25 | 长安大学 | Large-scale fatigue test bed and method suitable for components with various cantilever lengths |
| CN113970485B (en) * | 2021-10-29 | 2023-10-03 | 长安大学 | Large fatigue test bench and method suitable for various cantilever length members |
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