CN103674528B - A kind of underframe leg fatigue test device - Google Patents
A kind of underframe leg fatigue test device Download PDFInfo
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- CN103674528B CN103674528B CN201310646447.1A CN201310646447A CN103674528B CN 103674528 B CN103674528 B CN 103674528B CN 201310646447 A CN201310646447 A CN 201310646447A CN 103674528 B CN103674528 B CN 103674528B
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Abstract
The present invention relates to constructional engineering machinery technical field, particularly a kind of underframe leg fatigue test device, for testing the fatigue behaviour of underframe supporting leg.Underframe leg fatigue test device disclosed by the invention comprises: be arranged at the erecting bed on level ground; Fixed mount, comprise: be fixedly arranged at least two support members on described erecting bed and/or on level ground, respectively with the crossbeam of support member cross-over connection described in each, underframe supporting leg is between described crossbeam and described erecting bed, and the underframe of described underframe supporting leg is fixedly connected with described crossbeam; Several augmentor, each described augmentor is positioned at the end of a supporting leg of described underframe supporting leg, and is fixedly connected with the end of described erecting bed with corresponding described supporting leg respectively; When test loads, augmentor described in each applies the pressure of equivalent actual job operating mode simultaneously to described underframe supporting leg according to the loading spectrum gathered in advance, to test the fatigue behaviour of described underframe supporting leg.
Description
Technical field
The present invention relates to constructional engineering machinery technical field, particularly a kind of underframe leg fatigue test device.
Background technology
At present, in arm support engineering machinery, as pump truck, in the course of work of crane, usual employing underframe supporting leg supports gets on the bus, for pump truck, support the jib on getting on the bus and getting on the bus by underframe supporting leg during its work, and pump truck is when delivering concrete, make jib can produce low-frequency vibration at vertical direction and horizontal direction because concrete can produce impact to conveyance conduit, thus the acting force making underframe supporting leg can be subject to alternation impacts, thus can there is crackle because of fatigue damage after a certain period of use time in underframe supporting leg, even rupture, and then entail dangers to safety in production.
In order to prevent underframe supporting leg from occurring the problems referred to above, the underframe supporting leg that more can renew before underframe supporting leg occurs crackle or fracture because of fatigue damage, therefore, the fatigue behaviour how testing underframe supporting leg accurately becomes current urgent problem.
Summary of the invention
The object of the present invention is to provide a kind of underframe leg fatigue test device, for testing the fatigue behaviour of underframe supporting leg.
To achieve these goals, the invention provides following technical scheme:
A kind of underframe leg fatigue test device, comprising:
Be arranged at the erecting bed on level ground;
Fixed mount, described fixed mount comprises: be fixedly arranged at least two support members on described erecting bed and/or on level ground, respectively with the crossbeam of support member cross-over connection described in each, underframe supporting leg to be tested is between described crossbeam and described erecting bed, and the underframe of described underframe supporting leg is fixedly connected with described crossbeam;
Several augmentor, each described augmentor is positioned at the end of a supporting leg of described underframe supporting leg, and is fixedly connected with the end of described erecting bed with corresponding described supporting leg respectively; When test loads, augmentor described in each applies the pressure of equivalent actual job operating mode simultaneously to described underframe supporting leg according to the loading spectrum gathered in advance, to test the fatigue behaviour of described underframe supporting leg.
Preferably, each described augmentor comprises: the web joint be fixedly connected with described erecting bed, be erected on the load cylinder on described web joint, the cylinder tube of described load cylinder is fixedly connected with the end of described web joint with corresponding described supporting leg respectively with cylinder rod.
Preferably, each described augmentor comprises:
Be fixedly arranged on the feed screw nut on described erecting bed;
Be installed in the leading screw on described feed screw nut, the upper end of described leading screw is fixedly connected with the end of corresponding described supporting leg;
And be connected to drive described leading screw to produce the drive motor of above-below direction movement with described lead screw transmission.
Preferably, described erecting bed has the T-slot of multiple equidistant arrangement.
Further, above-mentioned underframe leg fatigue test device also comprises: be connected with augmentor signal described in each respectively, to control augmentor described in each applies pressure controller to described underframe supporting leg simultaneously.
Preferably, described fixed mount also comprises: support member is connected, to adjust at least two height adjusters of the spacing of described crossbeam and described erecting bed, what each described height adjuster was corresponding is arranged on a support member with described in described crossbeam and each respectively.
Preferably, each described arrangement for adjusting height comprises: be threaded with described support member respectively and the upper regulating part be oppositely arranged and lower regulating part, described crossbeam between regulating part and lower regulating part, adjusts the height of the relative described erecting bed of described crossbeam on described by changing described upper regulating part and the described position of lower regulating part on described support member.
Preferably, described fixed mount also comprises and is fixedly arranged on described crossbeam towards the tie-plate on the face of described underframe, and described crossbeam is fixedly connected with described underframe by described tie-plate.
Further, above-mentioned underframe leg fatigue test device also comprises: between described underframe and described crossbeam, and the connecting table be fixedly connected with described crossbeam with described underframe respectively.
Preferably, described connecting table comprises: outreach T-Ring, outreaches T-Ring and outreach the coaxial coupling ring of T-Ring with described described in being positioned at, and the flange be fixedly connected with the lower end of described interior coupling ring with the described lower end outreaching T-Ring respectively; Wherein, described in outreach T-Ring the upper end of upper end and/or described interior coupling ring can be fixedly connected with described crossbeam, described flange has many groups bolt hole that can be connected with the described underframe of different size.
In the test preparatory stage, first fixed mount is fixed on erecting bed, then the underframe of underframe supporting leg is fixedly connected with crossbeam below crossbeam underframe supporting leg being moved on to fixed mount, finally arrange an augmentor at the end of each supporting leg of underframe supporting leg, this augmentor each is fixedly connected with supporting leg with erecting bed respectively; In test load phase, each augmentor applies the pressure of equivalent actual job operating mode simultaneously to each self-corresponding supporting leg, namely by the stressing conditions of simulation underframe supporting leg under actual job operating mode, thus records the fatigue behaviour of underframe supporting leg exactly.Secondly, in the testing fatigue process of underframe supporting leg, design defect or the life-span weakness of underframe supporting leg can also be found out, thus the design of underframe supporting leg can be optimized accordingly, to improve the serviceable life of underframe supporting leg.Again, the structure of underframe leg fatigue test device provided by the invention is simple, and simulation loading is simple to operate, and can carry out the torture test of underframe supporting leg in environment in the open, make the true application scenario more pressing close to underframe supporting leg, effectively improve the reliability of torture test.
Accompanying drawing explanation
The stereographic map of the underframe leg fatigue test device that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the front view of Fig. 1;
Fig. 3 a is the vertical view of a kind of erecting bed in Fig. 1;
Fig. 3 b is the front view of a kind of erecting bed in Fig. 1;
Fig. 3 c is the enlarged drawing in A district in Fig. 3 b;
Fig. 4 is the vertical view of another kind of erecting bed in Fig. 1;
Fig. 5 is the vertical view of another kind of erecting bed in Fig. 1;
Fig. 6 be in Fig. 1 augmentor respectively with the location diagram of erecting bed and supporting leg;
Fig. 7 is the annexation figure of a kind of augmentor and erecting bed in Fig. 1;
Fig. 8 is the vertical view of Fig. 7;
Fig. 9 is the stereographic map of load cylinder in Fig. 7;
Figure 10 is the cut-open view of Fig. 9;
The vertical view of the underframe leg fatigue test device that Figure 11 provides for the specific embodiment of the invention;
Figure 12 is B-B direction cut-open view in Figure 11;
Figure 13 is the structural representation of a kind of support member in Figure 11;
Figure 14 is the structural representation of another kind of support member in Figure 11;
Figure 15 is the structural representation of a kind of fixed mount in Figure 11;
The stereographic map of connecting table in Figure 16 Figure 11;
Figure 17 is the vertical view of Figure 16;
Figure 18 is the cut-open view in C-C direction in Figure 17.
Reference numeral:
1-erecting bed, 11-T type groove, 2-underframe supporting leg,
21-underframe, 22-supporting leg, 3-fixed mount,
31-support member, the upper regulating part of 311-, regulating part under 312-,
313-cushion block, 32-crossbeam, 33-tie-plate,
4-connecting table, 41-outreaches T-Ring, coupling ring in 42-,
43-flange, 5-augmentor, 51-web joint,
52-bolt, 53-backing plate, 54-adds power cylinder,
541-cylinder tube, 542-cylinder rod, 55,56-oil cylinder erecting bed.
Embodiment
In order to test the fatigue behaviour of underframe supporting leg, the invention provides a kind of underframe leg fatigue test device, comprise: erecting bed, be fixedly arranged on the fixed mount on erecting bed, underframe supporting leg as subjects is fixedly connected with between erecting bed with fixed mount and with the crossbeam of fixed mount, and be arranged at the augmentor of end of each supporting leg of underframe supporting leg, and augmentor is fixedly connected with erecting bed, each augmentor applies the pressure of equivalent actual job operating mode simultaneously to underframe supporting leg according to the loading spectrum gathered in advance, to test the fatigue behaviour of underframe supporting leg.
Underframe leg fatigue test device provided by the invention is applicable to adopt underframe supporting leg to support the arm support engineering machinery of getting on the bus, as pump truck and crane etc., for convenience, hereafter by with the underframe supporting leg of pump truck for subjects is described.
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 stereographic map of the underframe leg fatigue test device that Fig. 1 provides for the embodiment of the present invention; Fig. 2 is the front view of Fig. 1.The underframe leg fatigue test device that the embodiment of the present invention provides comprises:
Be arranged at the erecting bed 1 on level ground;
Fixed mount 3, fixed mount 3 comprises: be fixedly arranged at least two support members 31 on erecting bed 1 and/or on level ground, respectively with the crossbeam 32 of each support member 31 cross-over connection, underframe supporting leg 2 to be tested is between crossbeam 32 and erecting bed 1, and the underframe 21 of underframe supporting leg 2 is fixedly connected with crossbeam 32;
Several augmentor 5, each augmentor 5 is positioned at the end of a supporting leg 22 of underframe supporting leg 2, and is fixedly connected with the end of erecting bed 1 with corresponding supporting leg 22 respectively; When test loads, each augmentor 5 applies the pressure of equivalent actual job operating mode simultaneously to underframe supporting leg 2 according to the loading spectrum gathered in advance, to test 2 fatigue behaviours of underframe supporting leg.
During concrete enforcement, on erecting bed 1 fixing horizontal ground or on horizontal foundation, for carrying fixed mount 3 and augmentor 5; Erecting bed 1 specifically can be full steel structure, cast structure or reinforced concrete structure, preferably adopts reinforced concrete structure; Refer to Fig. 3 a, Fig. 3 b and Fig. 3 c, wherein, Fig. 3 a is the vertical view of a kind of erecting bed in Fig. 1; Fig. 3 b is the front view of a kind of erecting bed in Fig. 1; Fig. 3 c is the enlarged drawing in A district in Fig. 3 b.The shape of erecting bed 1 is rectangular parallelepiped, surface offers the equidistantly multiple T-slot 11 of arrangement thereon, namely erecting bed 1 has the T-slot 11 of multiple equidistant arrangement, so that be fixed on the diverse location of erecting bed 1 by fixed mount 3 and each augmentor 5, the spacing between the size of T-slot 11 and adjacent two T-slot 11 can be determined according to the size of subjects.Erecting bed 1 shown in Fig. 3 a is an one-piece construction, but is not limited thereto, and the planform of erecting bed 1 also can adopt other forms, such as, refers to Fig. 4, is the vertical view of erecting bed another kind of in Fig. 1; In the diagram, erecting bed 1 is rectangular parallelepiped, but has perforate in the middle, and the shape of perforate can be circular port or square opening, and when adopting the erecting bed shown in Fig. 4, fixed mount 3 can be fixed on erecting bed, also can be fixed on level ground through described perforate; Erecting bed 1 can also adopt split-type structural, refers to Fig. 5, is the vertical view of erecting bed another kind of in Fig. 1; In Figure 5, erecting bed 1 is made up of four blocks of sub-erecting beds, and the block number that erecting bed 1 is divided into is corresponding with supporting leg 22 quantity of underframe supporting leg 2, and the coverage of every sub-erecting bed is corresponding with the range of movement of corresponding supporting leg 22.
Fixed mount 3, for the fixing underframe supporting leg 2 as subjects, comprising: be fixedly arranged at least two support members 31 on erecting bed 1 or on level ground, across the crossbeam 32 on each support member 31; In the embodiment shown in Fig. 1, the quantity of support member 31 is four, be bolted on erecting bed 1 by multiple, certainly, also support member 31 and erecting bed 1 can be made of one structure, such as, erecting bed 1 and support member all adopt full steel structure, support member 31 and erecting bed 1 can be welded as a whole, and for example, form the erecting bed 1 with support member 31 by the mode of casting; It is worth mentioning that, are terminals of the power transmission of whole underframe leg fatigue test device because of support member 31, carry each middle test load, therefore, the intensity of support member 31 is enough large, and preferably, its rigidity value is more than ten times or ten times of underframe supporting leg rigidity value.
Continue to consult Fig. 2, above-mentioned crossbeam 32 is for connecting underframe supporting leg 2, and crossbeam 32 can be bolted on each support member 31, also can be welded on each support member 31 by the mode of welding.In addition, crossbeam 32 rigidity also requires enough large, and preferably, the rigidity value of crossbeam 32 is more than ten times or ten times of the rigidity value of underframe supporting leg 2.
In the test preparatory stage, first fixed mount 3 is fixed on erecting bed 1 or on level ground, then underframe supporting leg 2 is moved on to the below of the crossbeam 32 of fixed mount 3 and the underframe 21 of underframe supporting leg 2 is fixedly connected with crossbeam 32, finally arrange an augmentor 5 at the end of each supporting leg 22 of underframe supporting leg 2, each augmentor 5 is fixedly connected with supporting leg 22 with erecting bed 1 respectively; In test load phase, each augmentor 5 applies the pressure of equivalent actual job operating mode simultaneously to underframe supporting leg 2 according to the loading spectrum gathered in advance, described loading spectrum can by obtaining after building site field survey and follow-up data process, each augmentor 5 simulates the stressing conditions of underframe supporting leg 2 under actual job operating mode by carrying out tension and compression to underframe supporting leg 2, thus records the fatigue behaviour of underframe supporting leg.
Refer to Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, wherein, Fig. 6 be in Fig. 1 augmentor respectively with the location diagram of erecting bed and supporting leg; Fig. 7 is the annexation figure of a kind of augmentor and erecting bed in Fig. 1; Fig. 8 is the vertical view of Fig. 7; Fig. 9 is the stereographic map of load cylinder in Fig. 7; Figure 10 is the cut-open view of Fig. 9.In a preferred embodiment, each augmentor 5 comprises: the web joint 51 be fixedly connected with erecting bed 1, be erected on the load cylinder 54 on web joint 51, the cylinder tube 541 of load cylinder 54 is fixedly connected with the end of web joint 51 with corresponding supporting leg 22 respectively with cylinder rod 542.In the present embodiment, web joint 51 is fixed on erecting bed 1 by multiple bolt 52, for the ease of installing, preferably, between web joint 51 and erecting bed 1, arrange a backing plate 53, load cylinder 54 stands on web joint 51, wherein, the cylinder tube 541 of load cylinder 54 is fixedly connected with the end of corresponding supporting leg 22, and the cylinder rod 542 of load cylinder 54 is fixedly connected with web joint 51; Or the cylinder rod 542 of load cylinder 54 is fixedly connected with the end of corresponding supporting leg 22, and the cylinder tube 541 of load cylinder 54 is fixedly connected with web joint 51.Pressure can be applied to supporting leg 22 by the stroke of controlled loading oil cylinder 54, thus the torture test to underframe supporting leg 2 can be completed.In Fig. 10, cylinder tube 541 is fixedly connected with the end of corresponding supporting leg 22 by oil cylinder erecting bed 55 and/or oil cylinder erecting bed 56.
In the above-described embodiment, augmentor 5 adopts hydraulic jack to be power source, but is not limited thereto, augmentor can also adopt as air pressure or electronic for power source, such as, adopt electronic mode, each augmentor 5 comprises: be fixedly arranged on the feed screw nut on erecting bed 1; Be installed in the leading screw on feed screw nut, the upper end of leading screw is fixedly connected with the end of corresponding supporting leg 22; And be connected with lead screw transmission with the drive motor driving leading screw to produce above-below direction movement.And for example, augmentor 5 utilizes guide rail and slider-actuated mode, or utilizes gear and rack drives mode etc.
Pressure can be applied to support supporting leg 2 to make each augmentor 5 simultaneously, preferably, above-mentioned underframe leg fatigue test device also comprises: be connected with each augmentor 5 signal respectively, to control each augmentor 5 applies pressure controller (not shown in FIG.) to underframe supporting leg 2 simultaneously; The control principle of controller is specifically well known to those skilled in the art, therefore does not describe at this.
Torture test is carried out in order to enable the underframe supporting leg of above-mentioned underframe leg fatigue test device to multiple different size, preferably, above-mentioned underframe leg fatigue test device has height adjustable function, realizing function of regulating height thereof parts can be arranged on erecting bed 1, fixed mount 3 and/or underframe supporting leg 2, concrete as increased cushion block etc. on erecting bed 1.
Refer to Figure 11, Figure 12, Figure 13 and Figure 14, wherein, the vertical view of the underframe leg fatigue test device that Figure 11 provides for the specific embodiment of the invention; Figure 12 is B-B direction cut-open view in Figure 11; Figure 13 is the structural representation of a kind of support member in Figure 11; Figure 14 is the structural representation of another kind of support member in Figure 11.Preferably, above-mentioned fixed mount 3 also comprises: be connected with crossbeam 32 and each support member 31 respectively, to adjust at least two height adjusters of crossbeam 32 and the spacing of erecting bed 1, and corresponding being arranged on a support member of each height adjuster.Particularly, each arrangement for adjusting height comprises: be threaded with support member 31 respectively and the upper regulating part 311 be oppositely arranged and lower regulating part 312, crossbeam 32 between upper regulating part 311 and lower regulating part 312, by changing upper regulating part 311 and the lower position of regulating part 312 on support member 31 adjusts the height that crossbeam 32 is mounted opposite platform 1, in the test preparatory stage, first by unscrewing upper regulating part 311 and lower regulating part 312, crossbeam 32 can be moved up and down between upper regulating part 311 and lower regulating part 312, then underframe supporting leg 2 is moved to the below of crossbeam 32, and the upper end of underframe 21 and crossbeam 32 are fitted, then underframe 22 is fixedly connected with crossbeam 32, finally by screwing upper regulating part 311 and lower regulating part 312, make regulating part 311 and lower regulating part 312 pinching beams 32, thus make crossbeam 32 be fixed on support member 31, namely the adjustment that crossbeam 32 corresponding to applicable current specifications underframe supporting leg is mounted opposite the height of platform 1 is completed.It should be noted that, the screw thread of upper regulating part 311 and lower regulating part 312 requires to have auto-lock function.
In order to increase the support strength of lower regulating part 312 pairs of crossbeams 32, preferably, one or more cushion block 313 can be added in the space between lower regulating part 312 and support member; The cushion block 313 can producing differing heights before the test is in advance for subsequent use.
In the above-described embodiment, be go up regulating part 311 and the lower position of regulating part 312 on support member 31 manually, adjust with this height that crossbeam 32 is mounted opposite platform 1; But be not limited thereto, the position of crossbeam 32 on support member 31 can also be changed by electronic, hydraulic pressure or pneumatic mode, adjust with this height that crossbeam 32 is mounted opposite platform 1.
Referring to Figure 15, is a kind of in Figure 11 structural representation of fixed mount; Above-mentioned fixed mount 3 also comprises and is fixedly arranged on crossbeam 32 towards the tie-plate 33 on the face of underframe 21, and crossbeam 32 is fixedly connected with underframe 22 by tie-plate 33.Design like this, can not change under the situation of crossbeam 32 on support member 31, namely the distance between crossbeam 32 and erecting bed 1 remains unchanged in situation, the underframe supporting leg of above-mentioned underframe leg fatigue test device to multiple different size can be enable to carry out torture test by the terminal pad 33 of different-thickness.
Refer to Figure 16, Figure 17 and Figure 18, wherein, the stereographic map of connecting table in Figure 16 Figure 11; Figure 17 is the vertical view of Figure 16; Figure 18 is the cut-open view in C-C direction in Figure 17.Preferably, above-mentioned underframe leg fatigue test device also comprises: between underframe 21 and crossbeam 32, and the connecting table 4 be fixedly connected with crossbeam 32 with underframe 21 respectively.Connecting table 4 can adopt integral structure, as cast structure or welded structure, preferably, connecting table 4 adopts split-type structural, comprise: outreach T-Ring 41, be positioned at outreach T-Ring 41 and with outreach the coaxial coupling ring 42 of T-Ring 41, and the flange 43 be fixedly connected with the lower end of interior coupling ring 42 with the lower end 41 outreaching T-Ring respectively; Wherein, the upper end of the upper end and/or interior coupling ring 42 that outreach T-Ring 41 can be fixedly connected with crossbeam 32, and flange 43 has many groups bolt hole that can be connected with the underframe 21 of different size.During installation, the upper end outreaching T-Ring 41 of connecting table 4 and/or the upper end of interior coupling ring 42 are fixedly connected with crossbeam 32, when crossbeam 32 is provided with tie-plate 33, the upper end outreaching T-Ring 41 of connecting table 4 and/or the upper end of interior coupling ring 42 are fixedly connected with tie-plate 33, and flange 43 is fixedly connected with the turntable flange of underframe 21.
In the above-described embodiments, in the test preparatory stage, first fixed mount 3 is fixed on erecting bed 1, and then connecting table 4 is fixedly mounted on the turntable flange of underframe 21, next underframe supporting leg 2 is moved on to the below of crossbeam 32, and be fixedly connected with crossbeam 32 by connecting table 4, finally each augmentor 5 is fixedly mounted on respectively the end of corresponding supporting leg 22.
It is worth mentioning that, in each embodiment above-mentioned, the below that augmentor 5 is positioned at supporting leg 21 applies pressure to supporting leg 22, but be not limited thereto, underframe supporting leg 2 can also be inverted, be fixedly connected with by underframe 21 with erecting bed 1, each augmentor lays respectively at the pressure above corresponding supporting leg 22, underframe supporting leg 2 being applied to equivalent actual job operating mode, because of concrete test philosophy and process substantially identical with above-mentioned embodiment, do not repeat them here.
In sum, utilize underframe leg fatigue test device provided by the invention, not only can test the fatigue behaviour of underframe supporting leg, can also in the testing fatigue process of underframe supporting leg, find out design defect or the life-span weakness of underframe supporting leg, thus the design of underframe supporting leg can be optimized accordingly, to improve the serviceable life of underframe supporting leg.In addition, the structure of underframe leg fatigue test device provided by the invention is simple, simulation loading is simple to operate, and not by environmental restraint, namely outdoor occasion torture test can be carried out to underframe supporting leg in outdoor, make the true application scenario more pressing close to underframe supporting leg, thus the fatigue behaviour of underframe supporting leg can be recorded more accurately.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a underframe leg fatigue test device, is characterized in that, comprising:
Be arranged at the erecting bed on level ground;
Fixed mount, described fixed mount comprises: be fixedly arranged at least two support members on described erecting bed and/or on level ground, respectively with the crossbeam of support member cross-over connection described in each, underframe supporting leg to be tested is between described crossbeam and described erecting bed, and the underframe of described underframe supporting leg is fixedly connected with described crossbeam;
Several augmentor, each described augmentor is positioned at the end of a supporting leg of described underframe supporting leg, and is fixedly connected with the end of described erecting bed with corresponding described supporting leg respectively; When test loads, augmentor described in each applies the pressure of equivalent actual job operating mode simultaneously to described underframe supporting leg according to the loading spectrum gathered in advance, to test the fatigue behaviour of described underframe supporting leg;
Described fixed mount also comprises: be connected with support member described in described crossbeam and each respectively, to adjust at least two height adjusters of the spacing of described crossbeam and described erecting bed, what each described height adjuster was corresponding is arranged on a support member, each described height adjuster comprises: be threaded with described support member respectively and the upper regulating part be oppositely arranged and lower regulating part, described crossbeam is on described between regulating part and lower regulating part, the height of the relative described erecting bed of described crossbeam is adjusted by changing described upper regulating part and the described position of lower regulating part on described support member.
2. underframe leg fatigue test device as claimed in claim 1, it is characterized in that, each described augmentor comprises: the web joint be fixedly connected with described erecting bed, be erected on the load cylinder on described web joint, the cylinder tube of described load cylinder is fixedly connected with the end of described web joint with corresponding described supporting leg respectively with cylinder rod.
3. underframe leg fatigue test device as claimed in claim 1, it is characterized in that, each described augmentor comprises:
Be fixedly arranged on the feed screw nut on described erecting bed;
Be installed in the leading screw on described feed screw nut, the upper end of described leading screw is fixedly connected with the end of corresponding described supporting leg;
And be connected to drive described leading screw to produce the drive motor of above-below direction movement with described lead screw transmission.
4. underframe leg fatigue test device as claimed in claim 1, it is characterized in that, described erecting bed has the T-slot of multiple equidistant arrangement.
5. the underframe leg fatigue test device as described in as arbitrary in claim 1-4, is characterized in that, also comprise: be connected with augmentor signal described in each respectively, to control augmentor described in each applies pressure controller to described underframe supporting leg simultaneously.
6. underframe leg fatigue test device as claimed in claim 1, is characterized in that, described fixed mount also comprises and is fixedly arranged on described crossbeam towards the tie-plate on the face of described underframe, and described crossbeam is fixedly connected with described underframe by described tie-plate.
7. underframe leg fatigue test device as claimed in claim 1, is characterized in that, also comprise: between described underframe and described crossbeam, and the connecting table be fixedly connected with described crossbeam with described underframe respectively.
8. underframe leg fatigue test device as claimed in claim 7, it is characterized in that, described connecting table comprises: outreach T-Ring, outreach T-Ring described in being positioned at and outreach the coaxial coupling ring of T-Ring with described, and the flange be fixedly connected with the lower end of described interior coupling ring with the described lower end outreaching T-Ring respectively; Wherein, described in outreach T-Ring the upper end of upper end and/or described interior coupling ring can be fixedly connected with described crossbeam, described flange has many groups bolt hole that can be connected with the described underframe of different size.
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| CN201310646447.1A CN103674528B (en) | 2013-12-04 | 2013-12-04 | A kind of underframe leg fatigue test device |
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| CN201310646447.1A CN103674528B (en) | 2013-12-04 | 2013-12-04 | A kind of underframe leg fatigue test device |
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| CN103674528A CN103674528A (en) | 2014-03-26 |
| CN103674528B true CN103674528B (en) | 2016-01-27 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092856U (en) * | 2011-04-18 | 2011-12-28 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Bench tester for autocrane frame |
| CN102589902A (en) * | 2012-03-12 | 2012-07-18 | 山东水泊焊割设备制造有限公司 | Supporting leg tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2879118B2 (en) * | 1991-02-19 | 1999-04-05 | 株式会社加藤製作所 | Method and apparatus for detecting pressure resistance of ground plane by outrigger float |
| JPH0611429A (en) * | 1991-04-15 | 1994-01-21 | Tadano Ltd | Examining device for bearing force of outrigger jack contacting ground |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092856U (en) * | 2011-04-18 | 2011-12-28 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Bench tester for autocrane frame |
| CN102589902A (en) * | 2012-03-12 | 2012-07-18 | 山东水泊焊割设备制造有限公司 | Supporting leg tester |
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