CN103196754A - Bending test device for semi-floating drive axle, and test method of same - Google Patents
Bending test device for semi-floating drive axle, and test method of same Download PDFInfo
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- CN103196754A CN103196754A CN2013100865897A CN201310086589A CN103196754A CN 103196754 A CN103196754 A CN 103196754A CN 2013100865897 A CN2013100865897 A CN 2013100865897A CN 201310086589 A CN201310086589 A CN 201310086589A CN 103196754 A CN103196754 A CN 103196754A
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Abstract
The invention discloses a bending test device for a semi-floating drive axle, and a method for performing the bending test on the semi-floating drive axle by the bending test device, belonging to the technical field of automobile manufacturing. A bending test device for the semi-floating drive axle, which can meet the stressing features of the semi-floating drive axle in the semi-floating drive axle bending test, and a method for performing bending test on the semi-floating drive axle by the test device, are provided. A wheel simulator is arranged on the chassis of each support frame for test of a support frame group; when the vertical bending rigid test, the vertical bending static strength test and the vertical bending fatigue test of the semi-floating drive axle are performed, after the semi-floating drive axle sample is connected with the wheel simulators, a workbench for test is supported by the chassis, and a test support counter force identical to the actual service condition is applied on the semi-floating drive axle through the wheel simulators.
Description
Technical field
The present invention relates to a kind of bend test device, especially relate to a kind of bend test device for the semi-floating drive axle, belong to field of automobile.The invention still further relates to a kind of method that adopts described bend test device described semi-floating drive axle to be carried out bending test.
Background technology
The semi-floating drive axle is a kind of rigid drive axle, is a kind of drive axle that is widely used in chiasma type passenger car, light passenger-cargo carriage and offroad vehicle.
Compare with the full floating drive axle that is widely used in large-scale passenger-cargo carriage, the semi-floating drive axle has simpler structure, parts still less, make and assembling easier, cost is lower.Because it arranges the convenience of installing at rim for automobile wheel, the semi-floating drive axle obtains widely applying at the underload automobile.But because the stressed complexity of its semiaxis, reliability is lower than fully floating axle drive axle, therefore inapplicable semifloating axle shaft drive axle on medium and heavy automobile.
The semiaxis of semi-floating drive axle is in operation and will bears two kinds of load, and a kind of is the torque that passes over by main reducing gear from transmission shaft, and is delivered to wheel by semiaxis; Another kind is the moment of flexure that passes over by spring and axle housing from vehicle body.This moment of flexure makes the semiaxis of semi-floating drive axle be in that this section born bigger alternating shear power between axle bearing and the semiaxis dish portion.This is that semifloating axle shaft drive axle load-bearing capacity is not as the main cause of fully floating axle drive axle.It also is the immediate cause that semi-floating drive axle bench test method is different from the full floating drive axle.
Use the various automobile of semi-floating drive axle, every side is used single tire often, and its wheelspan often is not equal to its both sides semiaxis dish portion outer face spacing, but less than the latter.That is to say that the stress point of semiaxis is not in fact in semiaxis dish portion, and at a point that is positioned on the space.For making semi-floating drive axle stressed and this drive axle in bench test stressed consistent in actual motion, thereby guarantee the accuracy of its bench test, find a kind of loading characteristic that makes test method and test installation way satisfy the semi-floating drive axle just to become research direction in the field.
Summary of the invention
Technical matters to be solved by this invention is: a kind of bend test device that is used for the semi-floating drive axle that can satisfy semi-floating drive axle loading characteristic in the bending test of semi-floating drive axle is provided.The present invention also provides a kind of method that adopts described test unit described semi-floating drive axle to be carried out bending test.
For solving the problems of the technologies described above the technical scheme that adopts be: a kind of bend test device for the semi-floating drive axle, comprise that one group of test of supporting described semi-floating drive axle exemplar is provided with the test workbench of T type groove with bracing frame and its, described test with bracing frame can in T type groove, move be installed in described test with workbench on, each bracing frame of support frame as described above group all comprises underframe and is installed in wheel simulator on the described underframe; When carrying out semi-floating drive axle bending test, described semi-floating drive axle exemplar is connected the back and is supported on described test with on the workbench by described underframe with wheel simulator, and applies one and the identical test reaction of bearing of actual behaviour in service by described wheel simulator to semi-floating drive axle exemplar.
Further be that described wheel simulator comprises semiaxis syndeton, rotating shaft and be installed in bearing in the described rotating shaft that the top of described underframe is provided with the U-lag of vertically upward the described rotating shaft of installation, Bearing assembly and semiaxis syndeton; Described bearing is installed in the bottom of described U-lag by described rotating shaft, and described semiaxis syndeton is by in the vertical U-lag that is installed in described rotating shaft, Bearing assembly top in its underpart, and its bottom surface apical grafting is on the cylindrical of described bearing; Described semiaxis syndeton is connected with described semi-floating drive axle exemplar by top, and described underframe is connected with workbench with described test by the bottom.
Further be, described semiaxis syndeton comprises semiaxis web joint, back up pad and limiting plate, described semiaxis web joint props up admittedly on described back up pad, described semiaxis syndeton is installed in the U-lag at described rotating shaft, Bearing assembly top by described back up pad, and the bottom surface apical grafting by described back up pad is on the cylindrical of described bearing, is installed in the position of the back up pad in the U-lag at described rotating shaft, Bearing assembly top by described limiting plate control.
Further be, described semiaxis syndeton also comprises the adjusting bolt, described adjusting bolt is screwed on the described limiting plate, and its back-out holds that apical grafting is on described back up pad from the side, and the accurate vertical support of the syndeton of semiaxis described in process of the test position is controlled by described adjusting bolt.
Further be, also be provided with Qian type groove and fixed bolt hole on described back up pad, described semiaxis web joint is supported on the described back up pad by described Qian type groove and the set bolt that is installed in the described fixed bolt hole.
Further be, the bearing of installing in the described rotating shaft is two, symmetrical being installed in the described rotating shaft of described two bearings, and by being arranged on the shaft shoulder in the described rotating shaft and being installed in each baffle ring axial location in the rotating shaft in the described bearing outside respectively.
Adopt described bend test device that the semi-floating drive axle is carried out the method for bending test, may further comprise the steps,
1) fixing semi-floating drive axle exemplar and arrange displacement transducer,
The semi-floating drive axle exemplar that main reducing gear, semiaxis and drive axle associated component are housed is fixed to test with on the workbench by bracket assembly, and the adjusting bolt of the semiaxis syndeton on the relative position by regulating each bracing frame in the bracket assembly and the wheel simulator of regulating each bracing frame, the strong point that makes described semi-floating drive axle exemplar during with actual the use strong point of wheel identical, then along described semi-floating drive axle exemplar vertically at least 7 displacement transducers of arranged just beneath of described semi-floating drive axle exemplar axle housing;
2) prestrain test load is also adjusted described displacement transducer,
By described semi-floating drive axle exemplar two spring base centre of support points in use, along perpendicular to described semi-floating drive axle exemplar longitudinal center alignment semi-floating drive axle exemplar 2 fully loaded load of prestrain at least, unload to zero the time at described prestrain load, adjust each displacement transducer respectively to zero-bit;
3) carry out the vertical curve implosion test, and record the deformation displacement of described semi-floating drive axle exemplar by displacement transducer,
Slowly load is started from scratch increase to 2.5 times fully loaded, and record the deformation displacement amount of described semi-floating drive axle exemplar in process of the test;
4) carry out the vertical curve test of static strength, observe the plastic yield situation and record failure load,
Change a new semi-floating drive axle exemplar, set by step 1) fixed and set by step 2) after prestrain finishes, slowly load is loaded on 2.5 times fully loaded, observe plasticity and become situation, once be loaded on destruction after removing displacement transducer then, and record the load when losing efficacy;
5) carry out the vertical curve torture test, and by each data of equipment records,
Change a new semi-floating drive axle exemplar, set by step 1) fixed and set by step 2) after prestrain finished, it was times fully loaded to add static load to 2.5 earlier, and the data when recording minimum load and 2.5 times of fully loaded load respectively with strainmeter, light oscillograph,
Add the pulsed load test then, when adding the pulsed load test, the Data Control maximum load of measuring when adding static load and minimum load and monitoring are to described semi-floating drive axle exemplar fracture, cycle index and damaged condition when record damages simultaneously.
So just, finished once the bending test to semi-floating drive axle exemplar.
Further being, the 3rd) in the vertical curve implosion test in step, each exemplar is tested 3 times at least, and all should transfer to zero-bit to the numerical value of displacement transducer during each on-test.
Further be, the 3rd) step the vertical curve implosion test in, when recording the deformation displacement of semi-floating drive axle exemplar, load is started from scratch at every turn and is increased in 2.5 times of fully loaded processes, the data of record displacement are no less than 6 times, and must record the displacement of fully loaded and 2.5 times of each measuring points of full load.
Further being, the 2nd) in the process of prestrain test load in step, the number of times of the fully loaded load of prestrain is 3 times, and each described prestrain load unloads to zero the time, all should adjust each displacement transducer to zero-bit.
The invention has the beneficial effects as follows: by each underframe tested with bracing frame in the support frame as described above group wheel simulator is set; When carrying out semi-floating drive axle bending test, make described semi-floating drive axle exemplar be connected the back with wheel simulator and be supported on described test with on the workbench by described underframe, and apply one and the identical test reaction of bearing of actual behaviour in service by described wheel simulator to semi-floating drive axle exemplar.Then described semi-floating drive axle exemplar is fixed on the described bend test device, and after the preload adjustment is finished, carry out vertical curve implosion test, vertical curve test of static strength and vertical curve torture test respectively, and note corresponding various test damage parameter.Because the test bracing frame of described bend test device is provided with wheel simulator, by described wheel simulator in various bending tests, testing the bridge exemplar to described semi-floating provides and the identical effect counter-force of behaviour in service, and by the spring base centre of support point on the semi-floating drive axle exemplar, can control the load of loading again completely, make described load and actual behaviour in service identical.Like this, just can make the semi-floating drive axle in bending test, satisfy the loading characteristic of semi-floating drive axle by described bend test device; Parameter and actual behaviour in service that the test that the described bend test device of employing is carried out semi-floating drive axle exemplar obtains are identical, to obtain test findings accurately.Practicality and the validity of test have been improved, for the design of postorder, improve reliable foundation is provided.
Description of drawings
Fig. 1 is the structural representation of a kind of bend test device for the semi-floating drive axle of the present invention;
Fig. 2 is the test that the present invention relates to the front view of bracing frame;
Fig. 3 is the side view of Fig. 2.
Be labeled as among the figure: semi-floating drive axle exemplar 1, test bracing frame 2, T type groove 3, test workbench 4, underframe 5, wheel simulator 6, semiaxis syndeton 7, rotating shaft 8, bearing 9, U-lag 10, bottom surface 11, cylindrical 12, semiaxis web joint 13, back up pad 14, limiting plate 15, adjusting bolt 16, Qian type groove 17, set bolt 18, baffle ring 19, displacement transducer 20, main reducing gear 21, semiaxis 22, spring base centre of support point 23.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3 be a kind of bend test device that is used for the semi-floating drive axle that in the bending test of semi-floating drive axle, can satisfy semi-floating drive axle loading characteristic provided by the invention, and adopt described test unit described semi-floating drive axle to be carried out the method for bending test.Described bend test device comprises that one group of test of supporting described semi-floating drive axle exemplar 1 is provided with the test workbench 4 of T type groove 3 with bracing frame 2 and its, described test is installed in described test with on the workbench 4 with what bracing frame 2 can move in T type groove 3, each bracing frame 2 of support frame as described above group all comprises underframe 5 and the wheel simulator 6 that is installed on the described underframe 5; When carrying out semi-floating drive axle bending test, described semi-floating drive axle exemplar 1 is connected the back and is supported on described test with on the workbench 4 by described underframe 5 with wheel simulator 6, and applies one and the identical test reaction of bearing of actual behaviour in service by described wheel simulator 6 to 1 in semi-floating drive axle sample.In order to simplify the structure of described wheel simulator 6, reduce and produce and experimentation cost, being connected and adjusting for the ease of described wheel simulator 6 and semi-floating drive axle sample 1 simultaneously, described wheel simulator 6 comprises semiaxis syndeton 7, rotating shaft 8 and is installed in bearing 9 in the described rotating shaft 8 that the top of described underframe 5 is provided with the U-lag 10 of vertically upward the described rotating shaft 8 of installation, bearing 9 subassemblies and semiaxis syndeton 7; Described bearing 9 is installed in the bottom of described U-lag 10 by described rotating shaft 8, described semiaxis syndeton 7 is by in the vertical U-lag 10 that is installed in described rotating shaft 8, bearing 9 subassembly tops in its underpart, and its bottom surface 11 apical graftings are on the cylindrical 12 of described bearing 9; Described semiaxis syndeton 7 is connected with described semi-floating drive axle exemplar 1 by top, and described underframe 5 is connected with workbench 4 with described test by the bottom; Described semiaxis syndeton 7 comprises semiaxis web joint 13, back up pad 14 and limiting plate 15, described semiaxis web joint 13 solid propping up on described back up pad 14, described semiaxis syndeton 7 is installed in the U-lag 10 at described rotating shaft 8, bearing 9 subassembly tops by described back up pad 14, and the bottom surface apical grafting by described back up pad is on the cylindrical of described bearing, is installed in the position of the back up pad 14 in the U-lag at described rotating shaft, Bearing assembly top by described limiting plate (15) control; Described semiaxis syndeton 7 also comprises regulates bolt 16, described adjusting bolt 16 is screwed on the described limiting plate 15, its back-out holds from the side apical grafting on described back up pad 14, and the syndeton of semiaxis described in the process of the test 7 accurate vertical support positions are by described adjusting bolt 16 controls.
Described bend test method may further comprise the steps,
1) fixing semi-floating drive axle exemplar 1 and arrange displacement transducer 20,
Main reducing gear 21 is housed, the semi-floating drive axle exemplar 1 of semiaxis 22 and drive axle associated component is fixed to test with on the workbench 4 by bracket assembly, and the adjusting bolt 16 of the semiaxis syndeton 7 on the relative position by regulating each bracing frame 2 in the bracket assembly and the wheel simulator 6 of regulating each bracing frame 2, the strong point that makes described semi-floating drive axle exemplar 1 during with actual the use strong point of wheel identical, then along described semi-floating drive axle exemplar 1 vertically at least 7 displacement transducers of arranged just beneath 20 of described semi-floating drive axle exemplar Bridge 1 shell;
2) prestrain test load is also adjusted described displacement transducer 20,
By described semi-floating drive axle exemplar 1 two spring base centre of support points 23 in use, along perpendicular to described semi-floating drive axle exemplar 1 longitudinal center's alignment semi-floating drive axle exemplar 12 fully loaded load of prestrain at least, unload to zero the time at described prestrain load, adjust each displacement transducer 20 respectively to zero-bit;
3) carry out the vertical curve implosion test, and pass through the deformation displacement of the described semi-floating drive axle exemplar 1 of displacement transducer 20 records,
Slowly load is started from scratch increase to 2.5 times fully loaded, and record the deformation displacement amount of described semi-floating drive axle exemplar 1 in process of the test;
4) carry out the vertical curve test of static strength, observe the plastic yield situation and record failure load,
Change a new semi-floating drive axle exemplar 1, set by step 1) fixed and set by step 2) after prestrain finishes, slowly load is loaded on 2.5 times fully loaded, observe plasticity and become situation, once be loaded on destruction after removing displacement transducer then, and record the load when losing efficacy;
5) carry out the vertical curve torture test, and by each data of equipment records,
Change a new semi-floating drive axle exemplar 1, set by step 1) fixed and set by step 2) after prestrain finished, it was times fully loaded to add static load to 2.5 earlier, and the data when recording minimum load and 2.5 times of fully loaded load respectively with strainmeter, light oscillograph,
Add the pulsed load test then, when adding the pulsed load test, the Data Control maximum load of measuring when adding static load and minimum load and monitoring are to described semi-floating drive axle exemplar 1 fracture, cycle index and damaged condition when record damages simultaneously.
So just, finished once the bending test to semi-floating drive axle exemplar 1.
Above-mentionedly with underframe 5 of bracing frame 2 wheel simulator 6 is set by each test in the support frame as described above group; When carrying out semi-floating drive axle bending test, make described semi-floating drive axle exemplar 1 be connected the back with wheel simulator 6 and be supported on described test with on the workbench 4 by described underframe 5, and apply one and the identical test reaction of bearing of actual behaviour in service by described wheel simulator 6 to semi-floating drive axle exemplar 1.Then described semi-floating drive axle exemplar 1 is fixed on the described bend test device, and after the preload adjustment is finished, carry out vertical curve implosion test, vertical curve test of static strength and vertical curve torture test respectively, and note corresponding various test damage parameter.Because the test bracing frame 2 of described bend test device is provided with wheel simulator 6, by described wheel simulator 6 in various bending tests, testing bridge exemplar 1 to described semi-floating provides and the identical effect counter-force of behaviour in service, and by the spring base centre of support point 23 on the semi-floating drive axle exemplar 1, can control the load of loading again completely, make described load and actual behaviour in service identical.Like this, just can make the semi-floating drive axle in bending test, satisfy the loading characteristic of semi-floating drive axle by described bend test device; Parameter and actual behaviour in service that the test that the described bend test device of employing is carried out semi-floating drive axle exemplar 1 obtains are identical, to obtain test findings accurately.Practicality and the validity of test have been improved, for the design of postorder, improve reliable foundation is provided.
In the above-mentioned embodiment, it is identical that semiaxis web joint 13 and the connected mode of semiaxis connect mode with wheel hub in the car load and semiaxis, thereby make semifloating axle shaft bear the moment of flexure of vertical direction by bolt; Cylindrical 12 apical graftings of the bottom surface of back up pad 14 and described bearing 9, thus make the bottom surface of back up pad 14 and bearing 9 be the line contact condition, and then tire center when making described contact condition be equal to the car load of semifloating axle shaft drive axle; The top of underframe 5 arranges U-shaped groove, and with the U-lag 10 of described rotating shaft 8, bearing 9 subassemblies and semiaxis syndeton 7, thereby make rotating shaft 8 can not produce the motion of horizontal direction.For the ease of semiaxis web joint 13 fixing on back up pad 14, also be provided with Qian type groove 17 and fixed bolt hole on described back up pad 14, described semiaxis web joint 13 is supported on the described back up pad 14 by described Qian type groove 17 and the set bolt 18 that is installed in the described fixed bolt hole.And for the reaction of bearing that makes 6 pairs of semi-floating drive axles of described wheel simulator exemplar 1 to greatest extent near actual state, the bearing of installing in the described rotating shaft 89 is two, described two bearings, 9 symmetrical being installed in the described rotating shaft 8, and by being arranged on the shaft shoulder in the described rotating shaft 8 and being installed in each baffle ring 19 axial location in the rotating shaft 8 in described bearing 9 outsides respectively.
And using described bend test device to carry out in the various bending tests of semi-floating drive axle exemplar 1, make the parameter of acquisition more accurate, the 2nd) in the process of prestrain test load in step, the number of times of the fully loaded load of prestrain is 3 times, and each described prestrain load unloads to zero the time, all should adjust each displacement transducer 20 to zero-bit; The 3rd) in the vertical curve implosion test in step, each exemplar is tested 3 times at least, and all should transfer to zero-bit to the numerical value of displacement transducer 20 during each on-test; And the 3rd) step the vertical curve implosion test in, when recording the deformation displacement of semi-floating drive axle exemplar 1, load is started from scratch at every turn and is increased in 2.5 times of fully loaded processes, and the data of record displacement are no less than 6 times, and must record the displacement of fully loaded and 2.5 times of each measuring points of full load.
Claims (10)
1. bend test device that is used for the semi-floating drive axle, comprise that one group of test of supporting described semi-floating drive axle exemplar (1) is provided with the test workbench (4) of T type groove (3) with bracing frame (2) and its, described test, is characterized in that with on the workbench (4) with the described test of being installed in of can moving in T type groove (3) of bracing frame (2): each bracing frame (2) of support frame as described above group all comprises underframe (5) and is installed in wheel simulator (6) on the described underframe (5); When carrying out semi-floating drive axle bending test, described semi-floating drive axle exemplar (1) is connected the back and is supported on described test with on the workbench (4) by described underframe (5) with wheel simulator (6), and applies one and the identical test reaction of bearing of actual behaviour in service by described wheel simulator (6) to semi-floating drive axle sample (1) part.
2. a kind of bend test device for the semi-floating drive axle according to claim 1, it is characterized in that: described wheel simulator (6) comprises semiaxis syndeton (7), rotating shaft (8) and is installed in bearing (9) in the described rotating shaft (8) that the top of described underframe (5) is provided with the U-lag (10) of vertically upward the described rotating shaft of installation (8), bearing (9) subassembly and semiaxis syndeton (7); Described bearing (9) is installed in the bottom of described U-lag (10) by described rotating shaft (8), described semiaxis syndeton (7) is by in the vertical U-lag (10) that is installed in described rotating shaft (8), bearing (9) subassembly top in its underpart, and its bottom surface (11) apical grafting is on the cylindrical (12) of described bearing (9); Described semiaxis syndeton (7) is connected with described semi-floating drive axle exemplar (1) by top, and described underframe (5) is connected with workbench (4) with described test by the bottom.
3. a kind of bend test device for the semi-floating drive axle according to claim 2, it is characterized in that: described semiaxis syndeton (7) comprises semiaxis web joint (13), back up pad (14) and limiting plate (15), described semiaxis web joint (13) is solid to be propped up on described back up pad (14), described semiaxis syndeton (7) is installed in described rotating shaft (8) by described back up pad (14), in the U-lag (10) at bearing (9) subassembly top, and the bottom surface apical grafting by described back up pad (14) is installed in described rotating shaft on the cylindrical of described bearing, the position of the back up pad in the U-lag at Bearing assembly top (14) is by described limiting plate (15) control.
4. a kind of bend test device for the semi-floating drive axle according to claim 3, it is characterized in that: described semiaxis syndeton (7) also comprises regulates bolt (16), described adjusting bolt (16) is screwed on the described limiting plate (15), its back-out holds from the side apical grafting on described back up pad (14), and the accurate vertical support position of the syndeton of semiaxis described in the process of the test (7) is controlled by described adjusting bolt (16).
5. according to claim 3 or 4 described a kind of bend test devices for the semi-floating drive axle, it is characterized in that: also be provided with Qian type groove (17) and fixed bolt hole on described back up pad (14), described semiaxis web joint (13) is supported on the described back up pad (14) by described Qian type groove (17) and the set bolt (18) that is installed in the described fixed bolt hole.
6. a kind of bend test device for the semi-floating drive axle according to claim 5, it is characterized in that: it is two that the bearing of installing (9) is gone up in described rotating shaft (8), described two bearings (9) are symmetrical to be installed in the described rotating shaft (8), and by being arranged on the shaft shoulder in the described rotating shaft (8) and being installed in each baffle ring (19) axial location in the rotating shaft (8) in described bearing (9) outside respectively.
7. adopt the described bend test device of claim 6 that the semi-floating drive axle is carried out the method for bending test, it is characterized in that: may further comprise the steps,
1) fixing semi-floating drive axle exemplar (1) and arrange displacement transducer (20),
Main reducing gear (21) is housed, the semi-floating drive axle exemplar (1) of semiaxis (22) and drive axle associated component is fixed to test with on the workbench (4) by bracket assembly, and the adjusting bolt (16) of the semiaxis syndeton (7) on the relative position by regulating each bracing frame (2) in the bracket assembly and the wheel simulator (6) of regulating each bracing frame (2), the strong point that makes described semi-floating drive axle exemplar (1) during with actual the use strong point of wheel identical, then along described semi-floating drive axle exemplar (1) vertically at least 7 displacement transducers of arranged just beneath (20) of described semi-floating drive axle exemplar (1) axle housing;
2) prestrain test load is also adjusted described displacement transducer (20),
By described semi-floating drive axle exemplar (1) two spring base centre of support points (23) in use, along perpendicular to described semi-floating drive axle exemplar (1) longitudinal center's alignment semi-floating drive axle exemplar (1) 2 fully loaded load of prestrain at least, unload to zero the time at described prestrain load, adjust each displacement transducer (20) respectively to zero-bit;
3) carry out the vertical curve implosion test, and pass through the deformation displacement of displacement transducer (20) the described semi-floating drive axle exemplar of record (1),
Slowly load is started from scratch increase to 2.5 times fully loaded, and record the deformation displacement amount of described semi-floating drive axle exemplar (1) in process of the test;
4) carry out the vertical curve test of static strength, observe the plastic yield situation and record failure load,
Change a new semi-floating drive axle exemplar (1), set by step 1) fixed and set by step 2) after prestrain finishes, slowly load is loaded on 2.5 times fully loaded, observe plasticity and become situation, once be loaded on destruction after removing displacement transducer then, and record the load when losing efficacy;
5) carry out the vertical curve torture test, and by each data of equipment records,
Change a new semi-floating drive axle exemplar (1), set by step 1) fixed and set by step 2) after prestrain finished, it was times fully loaded to add static load to 2.5 earlier, and the data when recording minimum load and 2.5 times of fully loaded load respectively with strainmeter, light oscillograph,
Add the pulsed load test then, when adding the pulsed load test, the Data Control maximum load of measuring when adding static load and minimum load and monitoring are to described semi-floating drive axle exemplar (1) fracture, cycle index and damaged condition when record damages simultaneously
So just, finished once the bending test to semi-floating drive axle exemplar (1).
8. bend test method according to claim 7 is characterized in that: the 3rd) in the vertical curve implosion test in step, each exemplar is tested 3 times at least, and all should transfer to zero-bit to the numerical value of displacement transducer (20) during each on-test.
9. bend test method according to claim 7, it is characterized in that: the 3rd) step the vertical curve implosion test in, when recording the deformation displacement of semi-floating drive axle exemplar (1), load is started from scratch at every turn and is increased in 2.5 times of fully loaded processes, the data of record displacement are no less than 6 times, and must record the displacement of fully loaded and 2.5 times of each measuring points of full load.
10. bend test method according to claim 7, it is characterized in that: the 2nd) in the process of prestrain test load in step, the number of times of the fully loaded load of prestrain is 3 times, and each described prestrain load unloads to zero the time, all should adjust each displacement transducer (20) to zero-bit.
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| CN107101816A (en) * | 2017-05-15 | 2017-08-29 | 吉林大学 | Semifloating axle shaft Combined Loading fatigue test board |
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| CN113447279A (en) * | 2021-06-30 | 2021-09-28 | 江铃汽车股份有限公司 | Be used for axle housing braking to twist reverse bench test device |
| CN118090245A (en) * | 2024-04-23 | 2024-05-28 | 中汽研汽车检验中心(武汉)有限公司 | Spool axle assembly performance test bench and test method thereof |
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| CN104634588A (en) * | 2015-03-11 | 2015-05-20 | 重庆理工大学 | Measurement method for support stiffness of drive axle |
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| CN106017888A (en) * | 2016-06-17 | 2016-10-12 | 中国第汽车股份有限公司 | Semi-floating type half shaft rotation bending fatigue bench test device |
| CN106017888B (en) * | 2016-06-17 | 2018-05-18 | 中国第一汽车股份有限公司 | A kind of semifloating axle shaft rotary bending fatigue bench test device |
| CN107101816A (en) * | 2017-05-15 | 2017-08-29 | 吉林大学 | Semifloating axle shaft Combined Loading fatigue test board |
| CN107976324A (en) * | 2017-12-30 | 2018-05-01 | 浙江联宜电机有限公司 | Scooter drive axle differential load simulating device |
| CN110736620A (en) * | 2018-07-20 | 2020-01-31 | 天津市浩航科技有限公司 | Bending test device of driving axles |
| CN109060344A (en) * | 2018-10-23 | 2018-12-21 | 四川建安工业有限责任公司 | Semiaxis rotoflector fatigue test board and test method |
| CN113432853A (en) * | 2021-06-17 | 2021-09-24 | 四川建安工业有限责任公司 | Drive axle assembly-based semi-floating half shaft rotation bending fatigue test device and method |
| CN113447279A (en) * | 2021-06-30 | 2021-09-28 | 江铃汽车股份有限公司 | Be used for axle housing braking to twist reverse bench test device |
| CN113447279B (en) * | 2021-06-30 | 2022-10-25 | 江铃汽车股份有限公司 | Be used for axle housing braking to twist reverse bench test device |
| CN118090245A (en) * | 2024-04-23 | 2024-05-28 | 中汽研汽车检验中心(武汉)有限公司 | Spool axle assembly performance test bench and test method thereof |
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