CN109540490A - A kind of lower frame of excavator fatigue test program spectrum loading device - Google Patents
A kind of lower frame of excavator fatigue test program spectrum loading device Download PDFInfo
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- CN109540490A CN109540490A CN201811554900.5A CN201811554900A CN109540490A CN 109540490 A CN109540490 A CN 109540490A CN 201811554900 A CN201811554900 A CN 201811554900A CN 109540490 A CN109540490 A CN 109540490A
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- fatigue
- excavator
- fatigue test
- frame
- base station
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- 238000011068 loading method Methods 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 42
- 238000009661 fatigue test Methods 0.000 claims abstract description 32
- 239000011230 binding agent Substances 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 6
- 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 2
- 238000001228 spectrum Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- 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
Abstract
The present invention provides a kind of lower frame of excavator fatigue test programs to compose loading device, including test base station and lower vehicle frame fatigue sample, tests and is equipped with portal frame component and actuation device assembly on base station；It is provided with T-type through slot on test base station, multiple groups foundation bolt, portal frame component and actuation device assembly are set in T-type through slot and are installed on test base station by foundation bolt；Lower vehicle frame fatigue sample is installed between the portal frame component and actuation device assembly.Lower frame of excavator fatigue test program spectrum loading device of the invention is by carrying out Opposite side loading to the stress in lower frame of excavator fatigue sample actual condition in the actuator that bottom is installed, make fatigue test simple possible, it is easy to carry out test load using fatigue test spectrum, structure is simple, it is easy to maintain, it can be adapted for the fatigue test of the lower frame of excavator of various different models.
Description
Technical field
The invention belongs to machinery equipment field, are related to mechanical fatigue test, and in particular to a kind of lower frame of excavator fatigue
Test procedure composes loading device.
Background technique
The mechanical structure destruction for bearing load effect is frequently not its static strength deficiency, but caused by fatigue damage accumulation
Fatigue crack leads to fatigue fracture.However, also lacking can simulate under excavator at present since lower frame of excavator stress is complicated
The fatigue test board of vehicle frame real load spectrum effect.Due to lacking the fatigue test under actual condition, lower frame of excavator can
Raising is hardly resulted in by Journal of Sex Research.In order to the durability Design and optimization offer technical support to lower frame of excavator, need
Fatigue test is carried out to lower frame of excavator.So the loading device design of lower frame of excavator fatigue test program spectrum is
It is very necessary.
Existing literature is concentrated mainly on the components such as swing arm, dipper to the Fatigue Test Research of digging machine structural element, for digging
The Fatigue Test Research of frame member is fewer under pick machine, and Major Difficulties are in the excavator course of work practical suffered by lower vehicle frame
External force is complicated, and the fatigue test that can reflect lower vehicle frame actual forced status is difficult to arrange with loading spectrum, and traditional loading method
It is difficult to realize.
In conclusion being badly in need of seeking one kind reasonably, suitable for vehicle frame under different type of machines, variety classes fatigue test journey
The loading device of sequence spectrum, estimates research and provides basis for the fatigue test of lower frame of excavator component and reliable life.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of examinations of lower frame of excavator fatigue
Program spectrum loading device is tested, to solve in the prior art lack for lower vehicle frame fatigue test loading device, lower vehicle frame fatigue
The problem of test is difficult to accurate simulation.
In order to solve the above-mentioned technical problem, the present invention is realised by adopting the following technical scheme:
A kind of lower frame of excavator fatigue test program spectrum loading device, including base station is tested, on the test base station
It is also equipped with portal frame component and actuation device assembly；
Actuation device assembly in vehicle frame fatigue test under the portal frame component is used on the test base station be arranged
It is loaded into the horizontal operation face of the load on lower vehicle frame fatigue sample four support wheel shafts, the height in the horizontal operation face is logical
Vertically adjustable installation site of the crossbeam of the portal frame component on the column of portal frame component is crossed to be adjusted；
The actuator of the actuation device assembly is used in the horizontal operation face to the four of lower vehicle frame fatigue sample
A support wheel shaft applies the load provided in lower vehicle frame fatigue test program spectrum, carries out fatigue test；
The load of the lower vehicle frame fatigue test program spectrum is applied to lower vehicle frame fatigue sample four by actuator upwards
On a support wheel shaft.
In a kind of more specifically implementation of above-mentioned technical proposal, lower frame of excavator fatigue test of the invention
It includes test base station that program, which composes loading device, is also equipped with portal frame component and actuation device assembly on the test base station；
Lower vehicle frame fatigue sample is also equipped between the portal frame component and actuation device assembly；
The portal frame component and actuation device assembly is mounted on test base station；
The crossbeam vertical position of the portal frame component is adjustable.
The present invention also has following technical characteristic:
Specifically, being provided with T-type through slot on the test base station, multiple groups foundation bolt is set in the T-type through slot,
The portal frame component and actuation device assembly is installed on test base station by foundation bolt.
Specifically, the portal frame component includes upright post base, column, crossbeam and newel, the upright post base
It is installed on T-type through slot by foundation bolt, the column bottom end is fixed in the upright post base, and the crossbeam passes through
Bolt group is mounted on the column, is installed in the crossbeam at the top of the newel by bolt
Portion, center column bottom are installed on the lower vehicle frame fatigue sample top by multiple groups high-strength bolt.
Specifically, the high-strength bolt is evenly arranged around the newel setting annular.
Specifically, the upright post base is two, multiple groups foundation bolt is installed on each upright post base, it is described
Upright post base on foundation bolt it is uniformly distributed around the column annular.
Specifically, the actuation device assembly includes square ring flange, actuator, flexural pivot, binder, the actuator
Top is hingedly installed by the flexural pivot with the binder, and the affixed square ring flange in actuator bottom simultaneously passes through lower margin spiral shell
Bolt is installed on T-type through slot, and the binder, which is fastened by bolts, is installed on flexural pivot top, the lower vehicle frame fatigue sample
Four support wheel shafts be packed into the binders and fixation.
Specifically, the actuator is vertically-mounted relative to test base station.
Specifically, the actuator is hydraulic servo actuator.
Compared with prior art, the present invention beneficial has the technical effect that
(I) upper end of the fixed lower vehicle frame of lower frame of excavator fatigue test program of the invention spectrum loading device, passes through bottom
The fixed loader in portion carries out Opposite side loading to the stress in lower frame of excavator fatigue sample actual condition, makes lower vehicle frame fatigue
Simple possible is tested, is easy to carry out load test using fatigue test spectrum；
(II) lower frame of excavator fatigue test program spectrum loading device of the invention is by controlling each actuator to getting off
Four, frame support wheel shafts can carry out the permanent width spectrum load of same-phase, same frequency, avoid the inconsistent situation of phase；It can also be with
Respective test spectrum is loaded to four support wheel shafts, this loading device can realize the various forms test spectrum of lower vehicle frame fatigue test
Load.
(III) lower frame of excavator fatigue test program of the invention composes loading device, and structure is simple, easy to maintain, can be with
The Durability Test of lower frame of excavator suitable for various different models.
Detailed description of the invention
Fig. 1 is overall structure axonometric schematic diagram of the present invention；
Fig. 2 is overall structure main view of the present invention；
Fig. 3 is overall structure side view of the present invention；
Fig. 4 is the structural schematic diagram of test base station 1 of the invention；
Fig. 5 is lower 44 structural schematic diagram of vehicle frame binder of the invention；
Fig. 6 is the main view of lower vehicle frame binder 44 of the invention；
Fig. 7 is the top view of lower vehicle frame binder 44 of the invention；
The meaning of each label in figure are as follows: 1- tests base station, vehicle frame fatigue sample under 2-, 3- portal frame component, 4- actuation
Device assembly；
11-T type through slot, 12- foundation bolt；
21- high-strength bolt；
31- upright post base, 32- column, 33- crossbeam, 34- newel, 35- bolt group；
41- square ring flange, 42- actuator, 43- flexural pivot, 44- binder.
Explanation is further explained in detail to particular content of the invention with reference to embodiments.
Specific embodiment
The lower frame of excavator fatigue examination that lower frame of excavator fatigue test program spectrum loading device of the invention is loaded
The acquisition methods of spectrum are tested according to " lower frame of excavator equivalent force time history obtains application No. is 201811007617.0 invention
And fatigue test compose method for sorting " in method for sorting carry out.
The lower frame of excavator fatigue examination that lower frame of excavator fatigue test program spectrum loading device of the invention is loaded
The acquisition methods for testing spectrum can also be according to the conventional acquisition methods progress that lower frame of excavator fatigue test in the prior art is composed.
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 lower frame of excavator fatigue test program spectrum loading device, as shown in Figures 1 to 7, packet
Test base station 1 is included, tests on base station 1 and is also equipped with portal frame component 3 and actuation device assembly 4；
Lower vehicle frame fatigue sample 2 is also equipped between portal frame component 3 and actuation device assembly 4；
Portal frame component 3 and actuation device assembly 4 are mounted on test base station 1；
33 vertical position of crossbeam of portal frame component 3 is adjustable.
As a kind of concrete scheme of the present embodiment, it is provided with T-type through slot 11 on the test base station 1 of the present embodiment, T-type is logical
Multiple groups foundation bolt 12, portal frame component 3 and actuation device assembly 4 are set in slot 11, test base station is installed on by foundation bolt 12
On 1.
As a kind of concrete scheme of the present embodiment, the portal frame component 3 of the present embodiment includes upright post base 31, column
32, crossbeam 33 and newel 34, upright post base 31 are installed on T-type through slot 11 by foundation bolt 12, and 32 bottom end of column is affixed
In upright post base 31, crossbeam 33 is mounted on column 32 by bolt group 35, is pacified at the top of newel 34 by bolt
Loaded on 33 middle part of crossbeam, 34 bottom of newel is installed on lower 2 top of vehicle frame fatigue sample by multiple groups high-strength bolt 21.
As a kind of concrete scheme of the present embodiment, the high-strength bolt 21 of the present embodiment is arranged annular uniform around newel 34
Arrangement.
As a kind of concrete scheme of the present embodiment, the upright post base 31 of the present embodiment is two, each upright post base 31
Upper installation multiple groups foundation bolt 12, the foundation bolt 12 on upright post base 31 are uniformly distributed around 32 annular of column.
As a kind of concrete scheme of the present embodiment, the actuation device assembly 4 of the present embodiment includes square ring flange 41, actuation
Device 42, flexural pivot 43, binder 44,42 top of actuator are hingedly installed by flexural pivot 43 and binder 44, and 42 bottom of actuator is solid
It connects square ring flange 41 and is installed on T-type through slot 11 by foundation bolt 12, binder 44, which is fastened by bolts, is installed on ball
43 tops are cut with scissors, four support wheel shafts of lower vehicle frame fatigue sample 2 are packed into binder 44 and fix.
As a kind of concrete scheme of the present embodiment, the actuator 42 of the present embodiment is vertically-mounted relative to test base station 1.
As a kind of concrete scheme of the present embodiment, the actuator 42 of the present embodiment is hydraulic servo actuator.
The use of lower frame of excavator fatigue test program spectrum loading device of the invention is carried out by following steps:
Step 1: for the lower vehicle frame fatigue sample 2 of different model, square ring flange 41 is adjusted in the T-type of test base station 1
Installation site on through slot 11, and pass through the fastening installation of foundation bolt 12.Adjust four actuator 42 is retractable to same level
On face, the upper plate of binder and flexural pivot is fixed up with connection bolt, then four support wheel shafts of lower vehicle frame are put into alignment folder
It is horizontal positioned to fill device, further, adjusting actuator 42 makes the upper-end contact of lower vehicle frame fatigue sample to 34 lower end of newel, so
Afterwards, lower vehicle frame fatigue sample 2 is installed to 34 lower end of newel of portal frame component 3 by high-strength bolt 21, adjusts four
The telescopic location of actuator 42 is to initial loading position；
Step 2: tired examination is carried out using four support wheel shaft positions of four actuator 42 to lower vehicle frame fatigue sample 2
Test the load of spectrum.Using existing servo controller, 42 loading fatigue test of actuator spectrum can control, actuator 42 can load full
Sufficient same-phase, same frequency permanent width under vehicle frame fatigue test compose；Actuator 42, which can also load, meets out of phase, different frequency
The lower vehicle frame fatigue test spectrum of corresponding four supports wheel shaft.Various forms of lower vehicle frame fatigue test spectrums can be from the prior art
Fatigue test spectrum method for sorting arranged；
Step 3: after the load and entire test process of completing fatigue test spectrum, rising to same level for actuator 42,
High-strength bolt 21 is unclamped, lower vehicle frame fatigue sample 2 is removed, requires to examine lower vehicle frame fatigue sample 2 according to follow-up test
Survey, collect testing result, with confirm experimental result whether the requirement of Pass Test standard or product standard.
Embodiment 2:
The present embodiment provides a kind of lower frame of excavator fatigue test program spectrum loading device, including test base station 1, test
Portal frame component 3 and actuation device assembly 4 are also equipped on base station 1；
Portal frame component 3 is loaded into for actuation device assembly 4 in vehicle frame fatigue test under being arranged on test base station 1 and gets off
The horizontal operation face of load on frame fatigue sample 2 four support wheel shafts, the height in horizontal operation face pass through portal frame component 3
Vertically adjustable installation site of the crossbeam 33 on the column 32 of portal frame component 3 is adjusted；
The actuator 42 of actuation device assembly 4 is used in horizontal operation face to four support wheels of lower vehicle frame fatigue sample 2
Axis applies the load provided in lower vehicle frame fatigue test program spectrum, carries out fatigue test；
The load provided in vehicle frame fatigue test program spectrum is applied to lower vehicle frame fatigue sample 2 four by actuator 42 upwards
On a support wheel shaft.
The specific structure of the lower frame of excavator fatigue test program spectrum loading device of the present embodiment and the digging in embodiment 1
The specific structure of vehicle frame fatigue test program spectrum loading device is identical under pick machine.
Claims (9)
1. a kind of lower frame of excavator fatigue test program composes loading device, which is characterized in that described including testing base station (1)
Test base station (1) on be also equipped with portal frame component (3) and actuation device assembly (4)；
Actuator group in vehicle frame fatigue test under the portal frame component (3) is used on the test base station (1) be arranged
Part (4) is loaded into the horizontal operation face of the load on four support wheel shafts of lower vehicle frame fatigue sample (2), the horizontal operation
The height in face can by vertical on the column (32) of portal frame component (3) of the crossbeam (33) of the portal frame component (3)
The installation site of tune is adjusted；
The actuator (42) of the actuation device assembly (4) is used in the horizontal operation face to lower vehicle frame fatigue sample
(2) four support wheel shafts apply the load provided in lower vehicle frame fatigue test program spectrum, carry out fatigue test；
The load of the lower vehicle frame fatigue test program spectrum is applied to lower vehicle frame fatigue sample (2) by actuator (42) upwards
On four support wheel shafts.
2. lower frame of excavator fatigue test program as described in claim 1 composes loading device, which is characterized in that the dragon
Lower vehicle frame fatigue sample (2) is also equipped between door frame component (3) and actuation device assembly (4)；
The portal frame component (3) and actuation device assembly (4) is mounted in test base station (1)；
Crossbeam (33) vertical position of the portal frame component (3) is adjustable.
3. lower frame of excavator fatigue test program as claimed in claim 2 composes loading device, which is characterized in that the survey
Being provided with T-type through slot (11) in examination base station (1), the T-type through slot (11) is interior to be arranged multiple groups foundation bolt (12), the dragon
Door frame component (3) and actuation device assembly (4) are installed in test base station (1) by foundation bolt (12).
4. lower frame of excavator fatigue test program as claimed in claim 2 composes loading device, which is characterized in that the dragon
Door frame component (3) includes upright post base (31), column (32), crossbeam (33) and newel (34), the upright post base (31)
It is installed on T-type through slot (11) by foundation bolt (12), the column (32) bottom end is fixed in the upright post base
(31), the crossbeam (33) is mounted on the column (32) by bolt group (35), the newel
(34) top is installed in the middle part of the crossbeam (33) by bolt, and newel (34) bottom is pacified by multiple groups high-strength bolt (21)
Loaded on lower vehicle frame fatigue sample (2) top.
5. lower frame of excavator fatigue test program as claimed in claim 4 composes loading device, which is characterized in that the height
Strength bolt (21) is evenly arranged around newel (34) the setting annular.
6. lower frame of excavator fatigue test program as claimed in claim 4 composes loading device, which is characterized in that described is vertical
Column pedestal (31) is two, installs multiple groups foundation bolt (12) on each upright post base (31), the upright post base
(31) foundation bolt (12) on is uniformly distributed around column (32) annular.
7. lower frame of excavator fatigue test program as claimed in claim 2 composes loading device, which is characterized in that the work
Dynamic device assembly (4) include square ring flange (41), actuator (42), flexural pivot (43), binder (44), the actuator (42)
Top is hingedly installed by the flexural pivot (43) and the binder (44), the affixed square ring flange in actuator (42) bottom
(41) and by foundation bolt (12) it is installed on T-type through slot (11), the binder (44), which is fastened by bolts, to be installed on
Four support wheel shafts on flexural pivot (43) top, the lower vehicle frame fatigue sample (2) are packed into the binder (44) and fix.
8. lower frame of excavator fatigue test program as claimed in claim 7 composes loading device, which is characterized in that the work
Dynamic device (42) are vertically-mounted relative to test base station (1).
9. lower frame of excavator fatigue test program as claimed in claim 8 composes loading device, which is characterized in that the work
Dynamic device (42) are hydraulic servo actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554900.5A CN109540490A (en) | 2018-12-19 | 2018-12-19 | A kind of lower frame of excavator fatigue test program spectrum loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554900.5A CN109540490A (en) | 2018-12-19 | 2018-12-19 | A kind of lower frame of excavator fatigue test program spectrum loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109540490A true CN109540490A (en) | 2019-03-29 |
Family
ID=65855337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811554900.5A Pending CN109540490A (en) | 2018-12-19 | 2018-12-19 | A kind of lower frame of excavator fatigue test program spectrum loading device |
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| CN (1) | CN109540490A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907201A (en) * | 2019-11-15 | 2020-03-24 | 华南理工大学 | Universal auxiliary frame fatigue test rack |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476969U (en) * | 2009-07-06 | 2010-05-19 | 青岛四方车辆研究所有限公司 | Bogie fatigue testing stand |
-
2018
- 2018-12-19 CN CN201811554900.5A patent/CN109540490A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476969U (en) * | 2009-07-06 | 2010-05-19 | 青岛四方车辆研究所有限公司 | Bogie fatigue testing stand |
Non-Patent Citations (2)
| Title |
|---|
| 徐文雅: "车架台架疲劳试验方法研究", 《时代汽车》, no. 8, 5 August 2016 (2016-08-05), pages 44 - 45 * |
| 房晓文: "起重机车架测试系统 的研究与开发", 万方数据知识服务平台, 25 December 2012 (2012-12-25), pages 7 - 13 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907201A (en) * | 2019-11-15 | 2020-03-24 | 华南理工大学 | Universal auxiliary frame fatigue test rack |
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