CN113686689A - Device and method for carrying out combined loading test on rubber elastic element of railway vehicle - Google Patents
Device and method for carrying out combined loading test on rubber elastic element of railway vehicle Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 164
- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000009191 jumping Effects 0.000 claims description 9
- 238000009661 fatigue test Methods 0.000 abstract description 4
- 238000013016 damping Methods 0.000 description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
Abstract
The invention belongs to the technical field of fatigue tests of rubber elastic elements of railway vehicles, and particularly discloses a device for carrying out a combined loading test on the rubber elastic elements of the railway vehicles, which comprises a simulation bogie assembly and a simulation vehicle body assembly, wherein the simulation bogie assembly comprises a guide unit, a horizontal loading unit and a connecting rod unit, and vertical loading is carried out on the rubber elastic elements by applying vertical loading force to the guide unit downwards; the connecting rod unit comprises a first connecting rod and a second connecting rod which are perpendicular to each other, and the rubber elastic element is transversely loaded and longitudinally loaded through the first connecting rod and the second connecting rod, so that the vertical, longitudinal and transverse three-way loading tests can be simultaneously carried out on the rubber elastic element. The scheme also provides a method for carrying out a combined loading test on the rubber elastic element of the railway vehicle.
Description
Technical Field
The invention relates to a device and a method for performing a combined loading test on a rubber elastic element of a railway vehicle, and belongs to the technical field of fatigue tests of the rubber elastic element of the railway vehicle.
Background
With the rapid development of the rail transit industry in China, the high speed, safety and comfort have become the development trend of the design and manufacture of rail vehicles, and the damping rubber elastic elements are arranged in the first system damping system and the second system damping system of the rail vehicles, so that the safety and the comfort of the vehicles are greatly improved. The rubber elastic elements of the railway vehicle are divided into a first system damping element and a second system damping element, wherein the first system damping element comprises an axle box spring, a first system spring and the like, the second system damping element comprises a second system damping pad, an air spring and the like, and the first system damping element and the second system damping element are elastomers formed by vulcanizing metal pieces and rubber at high temperature and high pressure.
During the operation of the railway vehicle, when the railway vehicle passes through a curve, according to the actual operation condition of the vehicle, the rubber elastic elements arranged in the first system damping system and the second system damping system of the railway vehicle can simultaneously bear three-way loads including a vehicle body load (namely a vertical load Fx), a traction force (namely a longitudinal load Fz) parallel to the track and a horizontal lateral force (namely a transverse load Fy) vertical to the track, and play a very important role in the first system damping system and the second system damping system. In order to ensure the safety and the stability of the vehicle operation, the rubber elastic element is subjected to a three-way combined loading test conforming to the actual road working condition, and the real mechanical property of the rubber elastic element is tested, so that the method has very important significance.
At present, mechanical property tests related to rubber elastic elements of railway vehicles mostly adopt a decomposed single loading mode or a decomposed two-way loading mode, and the following problems mainly exist:
1. the single loading mode cannot simulate the working condition that the elastic element bears multidirectional loads at the same time, so that the fatigue performance of the rubber elastic element under the complex stress condition is difficult to accurately represent, and the real mechanical property of the rubber elastic element cannot be accurately reflected.
2. The bidirectional loading mode can only simultaneously load in the vertical direction and the transverse direction or load in the vertical direction and the longitudinal direction. For example, the invention patent with the patent number of '201710841451.1' and the patent name of 'device and method for testing the fatigue of the longitudinal leaf spring in the vertical direction' is designed according to the characteristics of the actual installation mode, the size and the bearing deformation of the longitudinal leaf spring on an automobile, so that the fatigue test can be carried out on the leaf spring under the condition of loading in the vertical direction and the longitudinal direction simultaneously, the fatigue life of the leaf spring in the vertical direction is detected, and the reliability and the authenticity of the fatigue test of the loading of the leaf spring in the composite direction are improved. For another example, the patent number is "200920064929.5", the patent name is "rubber spring bidirectional loading static performance tester", the tester has two loading directions of vertical and horizontal, can carry on the vertical and horizontal static performance test of similar products such as air spring and rubber heap for rolling stock; the testing machine has the advantages of compact structure, high efficiency, reliable performance, high precision and good stability, is controlled by a computer, and has the advantages of simple and convenient test operation, accurate test data and visual display layout. Although the two schemes can simultaneously carry out the two-way loading test on the product, the two schemes cannot simultaneously carry out the three-way loading test on the product in the vertical direction, the transverse direction and the longitudinal direction.
3. The existing rubber elastic element loading device can only carry out loading test on one product, and when the loading test is carried out on one product, one product is placed on a sliding table of the loading device to test the product; if need carry out the loading test to two products simultaneously, add the second slip table below original slip table usually to will treat two products of experiment and place respectively on two slip tables and detect, because can the looks mutual friction interference between two slip tables, the accuracy of test data when detecting two products of greatly reduced simultaneously.
Disclosure of Invention
The device for performing the combined loading test on the rubber elastic element of the railway vehicle can simulate the actual working condition of a railway line, and simultaneously perform the combined loading test on the railway vehicle in the vertical direction, the transverse direction and the longitudinal direction, so that the accuracy of fatigue data of the rubber elastic element under the combined loading working condition is improved, and the fatigue efficiency is improved. The invention also provides a method for carrying out the combined loading test on the rubber elastic element of the railway vehicle.
In order to achieve the purpose, the invention provides the following technical scheme: the device comprises a simulated bogie assembly, wherein the simulated bogie assembly comprises a guide unit, a horizontal loading unit and a connecting rod unit, the guide unit and the horizontal loading unit are of frame structures, and the horizontal loading unit is arranged in a frame of the guide unit; the horizontal loading unit comprises a fixed plate and a middle rotating shaft which is positioned between the fixed plates and is vertically arranged, the rubber elastic element is fixed between the fixed plate and the guide unit, and vertical loading is carried out on the rubber elastic element by applying vertical loading force to the guide unit downwards; the connecting rod unit comprises a first connecting rod and a second connecting rod which are perpendicular to each other, the first connecting rod and the second connecting rod are both perpendicular to the middle rotating shaft and are both movably connected to the middle rotating shaft through universal bearings, and the middle rotating shaft is loaded through the first connecting rod and the second connecting rod so as to transversely load and longitudinally load the rubber elastic element.
Preferably, the first connecting rod comprises a first loading rod and a second loading rod which are symmetrically arranged, the second connecting rod comprises a third loading rod arranged between the first loading rod and the second loading rod, and the first loading rod, the second loading rod and the third loading rod are all connected to the middle rotating shaft through universal bearings; one end of the first loading rod and one end of the second loading rod, which are far away from the middle rotating shaft, are provided with a stress application plate, one end of the third loading rod, which is far away from the middle rotating shaft, is provided with a stress application plate, loads are applied to the first loading rod, the second loading rod and the third loading rod through the stress application plate and act on the middle rotating shaft, and then the middle rotating shaft transmits the loading force to the rubber elastic element so as to perform transverse loading and longitudinal loading.
Preferably, the fixing plate comprises an upper fixing plate and a lower fixing plate, and the middle rotating shaft is connected between the upper fixing plate and the lower fixing plate and is positioned in the middle of the upper fixing plate and the lower fixing plate; still evenly be equipped with the a plurality of bracing pieces that are located the middle part axis of rotation outside between upper fixed plate and the bottom plate, upper fixed plate, bottom plate and bracing piece form first frame, and the middle part axis of rotation is located the vertical middle part of first frame.
Preferably, a limiting ring is arranged between the first loading rod and the upper fixing plate, between the first loading rod and the third loading rod, between the third loading rod and the second loading rod, and between the second loading rod and the lower fixing plate, and the positions of the first loading rod, the second loading rod and the third loading rod on the middle rotating shaft are limited by the limiting ring.
Preferably, the guide unit comprises an upper fixed disc and a lower fixed disc, a loading disc is arranged below the upper fixed disc, the upper fixed disc and the loading disc are connected above the lower fixed disc through an upright post, and the loading disc can move up and down along the upright post; the upper fixed disc, the upright post and the lower fixed disc form a second frame, and the horizontal loading unit is positioned in the second frame and between the loading disc and the lower fixed disc; a first station is formed between the loading disc and the upper fixing plate and used for assembling a first rubber elastic element, a second station is formed between the lower fixing disc and the lower fixing plate and used for assembling a second rubber elastic element, and double stations can be formed through the first station and the second station and can be used for simultaneously carrying out loading tests on the two rubber elastic elements.
Preferably, one end of the middle rotating shaft is provided with a limiting step for preventing the middle rotating shaft from jumping out, the other end of the middle rotating shaft is provided with a limiting check ring for preventing the middle rotating shaft from jumping out, and the middle rotating shaft is limited at two ends by the limiting step and the limiting check ring to prevent the middle rotating shaft from jumping out.
Preferably, the device also comprises a frame-type simulated vehicle body component, the simulated vehicle body component forms a third frame by the base and the bracket, and the simulated bogie component is positioned in the third frame; the upper end of the middle part of the base is provided with a bottom support, and the simulation bogie assembly is arranged at the upper end of the bottom support through a lower fixing disc; the support comprises a side support column and an upper support plate, and the lower end of the upper support plate is provided with a vertical loading oil cylinder for vertically loading the rubber elastic element; a guide device for guiding the vertical loading oil cylinder is arranged between the side supporting columns, the guide device comprises a mounting seat and a guide plate, the guide plate is fixedly connected to the side supporting columns through the mounting seat, and the lower end of the guide plate is provided with a positioning column for compressing the second frame and preventing the second frame from shaking; the middle part of the guide plate is provided with a through hole for the vertical loading oil cylinder to pass through, and a power output rod of the vertical loading oil cylinder can move downwards through the through hole and apply vertical load to the loading disc so as to vertically load the rubber elastic element.
Preferably, the base is provided with two counter-force seats, the two counter-force seats are respectively provided with a longitudinal loading unit and a transverse loading unit, the longitudinal loading unit is provided with a longitudinal loading oil cylinder, the transverse loading unit is provided with a transverse loading oil cylinder, the longitudinal loading oil cylinder and the transverse loading oil cylinder are perpendicular to each other, and the longitudinal loading oil cylinder and the transverse loading oil cylinder are both perpendicular to the middle rotating shaft; acting force is applied to the stress application plate through a power output rod of the longitudinal loading oil cylinder and a power output rod of the transverse loading oil cylinder to carry out transverse loading and longitudinal loading on the rubber elastic element; hinges used for enabling the power output rod of the longitudinal loading oil cylinder and the power output rod of the transverse loading oil cylinder to be adjustable in position according to actual working conditions are arranged on the longitudinal loading oil cylinder and the transverse loading oil cylinder.
The method for carrying out the combined loading test on the rubber elastic element of the railway vehicle by adopting the loading test device comprises the following steps:
the first step is as follows: fixedly placing a first rubber elastic element on a first station between an upper fixing plate and a loading disc, and fixedly placing a second rubber elastic element on a second station between a lower fixing plate and a lower fixing disc, wherein the first rubber elastic element and the second rubber elastic element are connected in series through the upper fixing plate, the lower fixing plate and a middle rotating shaft;
the second step is that: the simulation bogie component is tightly pressed by the bottom support and the positioning column to prevent the simulation bogie component from shaking;
the third step: simultaneously starting a vertical loading oil cylinder, a longitudinal loading oil cylinder and a transverse loading oil cylinder; the vertical loading oil cylinder drives a power output rod of the vertical loading oil cylinder to move downwards and penetrate through a through hole in the middle of the guide plate to apply a vertical load to the loading disc, the loading disc moves downwards along the stand column, and the vertical load is sequentially transmitted to the rubber elastic element I, the middle rotating shaft and the rubber elastic element II through the loading disc, so that a vertical loading test is performed on the rubber elastic element I and the rubber elastic element II which are connected in series; the longitudinal loading oil cylinder drives a power output rod of the longitudinal loading oil cylinder to apply longitudinal load to a stressing plate in the longitudinal direction, the transverse loading oil cylinder drives a power output rod of the transverse loading oil cylinder to apply transverse load to the stressing plate in the transverse direction, the stressing plate in the longitudinal direction and the stressing plate in the transverse direction transmit the longitudinal load and the transverse load to the middle rotating shaft through the connecting rod unit, and then the middle rotating shaft transmits the longitudinal load and the transverse load to the rubber elastic element I and the rubber elastic element II, so that vertical loading, longitudinal loading and transverse loading tests are simultaneously performed on the rubber elastic element I and the rubber elastic element II.
Preferably, the first rubber elastic element to be tested is fixedly placed at a first station between the upper fixing plate and the loading disc, and the second rubber elastic element is fixedly placed at a second station between the lower fixing plate and the lower fixing disc, specifically: fixedly connecting the upper part of a first rubber elastic element to be tested with a loading disc, fixedly connecting the lower part of the first rubber elastic element with the upper end of a middle rotating shaft and an upper fixing plate, fixedly connecting the upper part of a second rubber elastic element with the lower end of the middle rotating shaft and a lower fixing plate through a limiting check ring, and fixedly connecting the lower part of the second rubber elastic element with a lower fixing disc, so that the first rubber elastic element is fixedly installed on a first station, and the second rubber elastic element is fixedly installed on a second station; compress tightly simulation bogie subassembly through collet and reference column and prevent that simulation bogie subassembly from rocking, specifically indicate: arrange the collet upper end in with lower fixed disk, and compress tightly the reference column in upper fixed disk upper end to this compresses tightly simulation bogie subassembly through collet and reference column fixed.
The invention has the beneficial effects that:
1. the invention can simultaneously carry out vertical, longitudinal and transverse three-way loading tests on the rubber elastic element, thereby improving the accuracy of fatigue data of the rubber elastic element under the composite loading working condition and improving the fatigue efficiency. The vertical loading is that the vertical loading oil cylinder transfers the vertical load to the rubber elastic element downwards, the transverse loading is that the transverse loading oil cylinder transfers the transverse load to the rubber elastic element through the middle rotating shaft, and the longitudinal loading is that the longitudinal loading oil cylinder transfers the longitudinal load to the rubber elastic element through the middle rotating shaft.
2. According to the invention, through the arrangement of the simulation bogie assembly, two test stations are arranged between the guide unit and the horizontal loading unit, and two rubber elastic elements can be connected in series, so that three-way loading tests can be simultaneously carried out on two elastic rubber element samples, and between the two test stations, the two rubber elastic elements cannot interfere with each other, so that the test data accuracy is high, and the problem that the test data accuracy is influenced by friction generated between two sliding tables when the two elastic rubber element samples are simultaneously subjected to loading tests in the prior art is solved.
3. The invention forms a first frame by 3 frame-type structures, namely an upper fixing plate, a lower fixing plate and a support rod, an upper fixing disc, a stand column and a lower fixing disc form a second frame, and a base and a support form a third frame; the second frame is fixed through the positioning column and the bottom support of the third frame, and the rubber elastic element is fixed through the second frame and the first frame, so that the structure is simple, and the performance is reliable; and the independent frame-type structure makes the vertical mounting height, the horizontal mounting space and the vertical mounting space of the whole testing device adjustable according to the interfaces and spaces of different testing machines, and meets the requirements of the mounting spaces of different testing machines and the lengths of the samples of the rubber elastic elements.
Drawings
FIG. 1 is a schematic front view of the overall structure of an analog truck assembly in an embodiment of the present invention.
Fig. 2 is a schematic top view of the structure of fig. 1.
Fig. 3 is a left side view of the structure of fig. 1.
FIG. 4 is a schematic front view of the entire structure of a simulated vehicle body component in the embodiment of the invention.
Fig. 5 is a schematic top view of the structure of fig. 4.
Fig. 6 is a left side view of the structure of fig. 4.
FIG. 7 is a schematic front view of the overall structure of the device for combined loading test in the embodiment of the present invention.
Fig. 8 is a schematic top view of the structure of fig. 7.
Fig. 9 is a left side view of the structure of fig. 7.
The reference numerals include: 1. a first rubber elastic element; 2. a second rubber elastic element; 3. a middle rotating shaft; 7. a first loading lever; 8. a second loading lever; 9. a third loading lever; 10. a longitudinal gusset; 12. an upper fixing plate; 13. a lower fixing plate; 14. a support bar; 15. a first frame; 16. a limiting ring; 17. an upper fixed disc; 18. a lower fixed disc; 19. a loading tray; 20. a column; 21. a first station; 22. a second station; 23. a limiting step; 24. a limit retainer ring; 25. a base; 27. a bottom support; 28. side support columns; 29. an upper support plate; 30. a vertical loading oil cylinder; 31. a power output rod of the vertical loading oil cylinder; 32. a mounting seat; 33. a guide plate; 34. a positioning column; 35. a longitudinal counter-force seat; 36. a transverse counter-force seat; 37. longitudinally loading the oil cylinder; 38. a power output rod of the longitudinal loading oil cylinder; 39. transversely loading the oil cylinder; 40. a power output rod of the transverse loading oil cylinder; 41. a hinge; 43. a guide copper sleeve; 44. and (3) vertically loading the plate.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to fig. 1-9.
As shown in the figure, during the running process of the vehicle, the rubber elastic element of the rail vehicle as the first series damping element or the second series damping element can simultaneously bear three-way load, which are respectively: a. the self-loading of the vehicle body, namely the vertical loading Fx; b. the tractive force parallel to the rail, i.e. the longitudinal load Fz; c. the horizontal lateral force perpendicular to the rail, i.e. the transverse load Fy. In order to ensure the stable running of the vehicle and the working performance of the rubber elastic element of the railway vehicle serving as a primary damping element or a secondary damping element, a three-way combined loading test needs to be carried out on the rubber elastic element of the railway vehicle before loading.
The device comprises a simulated bogie assembly, wherein the simulated bogie assembly comprises a guide unit, a horizontal loading unit and a connecting rod unit, the guide unit and the horizontal loading unit are of frame structures, and the horizontal loading unit is arranged in a frame of the guide unit; the horizontal loading unit comprises a fixed plate and a middle rotating shaft 3 which is positioned between the fixed plates and is vertically arranged, the rubber elastic element is fixed between the fixed plate and the guide unit, and vertical loading is carried out on the rubber elastic element by applying vertical loading force to the guide unit downwards; the connecting rod unit comprises a first connecting rod and a second connecting rod which are perpendicular to each other, the first connecting rod and the second connecting rod are both perpendicular to the middle rotating shaft 3 and are both movably connected to the middle rotating shaft 3 through universal bearings, and the middle rotating shaft 3 is loaded through the first connecting rod and the second connecting rod so as to transversely load and longitudinally load the rubber elastic element. The invention can simultaneously carry out vertical, longitudinal and transverse three-way loading tests on the rubber elastic element, thereby improving the accuracy of fatigue data of the rubber elastic element under the composite loading working condition and improving the fatigue efficiency.
As shown in fig. 3, the first connecting rod includes a first loading rod 7 and a second loading rod 8 which are symmetrically arranged, the second connecting rod includes a third loading rod 9 which is arranged between the first loading rod 7 and the second loading rod 8, and the first loading rod 7, the second loading rod 8 and the third loading rod 9 are all connected to the middle rotating shaft 3 through universal bearings; the end of the middle rotating shaft 3 far away from the first loading rod 7 and the second loading rod 8 is provided with a stress application plate, the end of the middle rotating shaft 3 far away from the third loading rod 9 is provided with a stress application plate, the first loading rod 7, the second loading rod 8 and the third loading rod 9 are loaded through the stress application plate and act on the middle rotating shaft 3, and then the middle rotating shaft 3 transfers the loading force to the rubber elastic element for transverse loading and longitudinal loading.
In the actual test process, a worker can set the first connecting rod as a longitudinal loading end and the second connecting rod as a transverse loading end according to specific product requirements, or set the first connecting rod as a transverse loading end and the second connecting rod as a longitudinal loading end, in this embodiment, the first connecting rod is preferably set as the longitudinal loading end, that is, one gusset at one end of the first loading rod 7 and the second loading rod 8 far away from the middle rotating shaft 3 is the longitudinal gusset 10, and one gusset at one end of the third loading rod 9 far away from the middle rotating shaft 3 is the transverse gusset; the first loading rod 7, the second loading rod 8 and the third loading rod 9 are connected with the middle rotating shaft 3 through universal bearings, when a longitudinal stress plate 10 applies longitudinal loads to the first loading rod 7 and the second loading rod 8, and a transverse stress plate applies transverse loads to the third loading rod 9, the first loading rod 7, the second loading rod 8, the third loading rod 9 and the middle rotating shaft 3 can be freely twisted, so that the first connecting rod and the second connecting rod can vertically and horizontally move around the rotating shaft, and a transverse loading test and a longitudinal loading test of the rubber elastic element are realized. First loading pole 7 and 8 symmetries of second loading pole set up and all be connected with middle part axis of rotation 3, can guarantee first loading pole 7 and 8 and the stable connection of middle part axis of rotation 3 of second loading pole, locate first loading pole 7 and second loading pole 8 with third loading pole 9 simultaneously, can guarantee first loading pole 7, second loading pole 8, the stability of being connected between third loading pole 9 and the middle part axis of rotation 3, make horizontal and vertical enterprising uniform loading, guarantee test data's accuracy.
As shown in fig. 1 and 3, the fixing plates include an upper fixing plate 12 and a lower fixing plate 13, and the middle rotating shaft 3 is connected between the upper fixing plate 12 and the lower fixing plate 13 and is located at the middle of the upper fixing plate 12 and the lower fixing plate 13; a plurality of support rods 14 positioned outside the middle rotating shaft 3 are uniformly arranged between the upper fixing plate 12 and the lower fixing plate 13, the upper fixing plate 12, the lower fixing plate 13 and the support rods 14 form a first frame 15, and the middle rotating shaft 3 is positioned in the vertical middle of the first frame 15.
A plurality of support rods 14 are arranged between the upper fixing plate 12 and the lower fixing plate 13, the number of the support rods 14 in the embodiment is four, the middle rotating shaft 3 is positioned on a vertical middle shaft between the upper fixing plate 12 and the lower fixing plate 13, and the four support rods 14 are uniformly distributed on the outer peripheral side of the middle rotating shaft 3 and are used for supporting the upper fixing plate 12 and the lower fixing plate 13; the upper fixing plate 12, the lower fixing plate 13 and the support rod 14 form a first frame 15, and the first frame 15 integrally moves along with the loading force of the first connecting rod and the second connecting rod during the transverse loading test and the vertical loading test of the rubber elastic element.
As shown in fig. 1 and 3, a limiting ring 16 is disposed between the first loading rod 7 and the upper fixing plate 12, between the first loading rod 7 and the third loading rod 9, between the third loading rod 9 and the second loading rod 8, and between the second loading rod 8 and the lower fixing plate 13, and the positions of the first loading rod 7, the second loading rod 8, and the third loading rod 9 on the middle rotating shaft 3 are limited by the limiting ring 16, so as to prevent the first loading rod 7, the second loading rod 8, and the third loading rod 9 from moving up and down along the middle rotating shaft 3 during loading, and ensure that the middle rotating shaft 3 is uniformly stressed during loading, so that loading force can be transmitted to the rubber elastic element, and accuracy of test data is ensured; meanwhile, the arrangement of the limiting ring 16 can also ensure that the first connecting rod and the second connecting rod have enough installation space.
As shown in fig. 1 and 3, the guide unit includes an upper fixed tray 17 and a lower fixed tray 18, a loading tray 19 is disposed below the upper fixed tray 17, the upper fixed tray 17 and the loading tray 19 are connected above the lower fixed tray 18 through a vertical column 20, and the loading tray 19 can move up and down along the vertical column 20; the upper fixed tray 17, the upright post 20 and the lower fixed tray 18 form a second frame, and the horizontal loading unit is positioned in the second frame and between the loading tray 19 and the lower fixed tray 18; a first station 21 is formed between the loading disc 19 and the upper fixing plate 12 for assembling the first rubber elastic element 1, a second station 22 is formed between the lower fixing disc 18 and the lower fixing plate 13 for assembling the second rubber elastic element 2, and double stations can be formed by the first station 21 and the second station 22 and loading tests can be simultaneously carried out on the two rubber elastic elements.
The four upright posts 20 in the embodiment are uniformly distributed at the upper end of the lower fixed disk 18 and are positioned on the outer peripheral side of the horizontal loading unit, the upper fixed disk 17, the upright posts 20 and the lower fixed disk 18 form an independent second frame, the loading disk 19 is positioned between the upper fixed disk 18 and the lower fixed disk 19 and is positioned above the horizontal loading unit, the upper end of the loading disk 19 is provided with a guide copper sleeve 43 which can be sleeved on the upright posts 20, and the guide copper sleeve 43 can enable the loading disk 19 to be supported more stably and can guide the loading disk 19 when the loading disk 19 is loaded and moves up and down along the upright posts 20; the second frame prevents the specimen from being deformed horizontally by a large displacement and destabilized when a vertical load Fx is applied to the rubber elastic member and a lateral load Fy and a longitudinal load Fz are applied to the rubber elastic member.
As shown in fig. 1, two loading stations connected in parallel are formed between a first frame 15 and a second frame, a first station 21 is located between a loading disc 19 and an upper fixing plate 12, a second station 22 is located between a lower fixing disc 18 and a lower fixing plate 13, and a first rubber elastic element 1 and a second rubber elastic element 2 to be tested can be simultaneously assembled on the first station 21 and the second station 22 respectively; the upper part of the rubber elastic element I1 is fixedly connected with a loading disc 19, the lower part of the rubber elastic element I1 is fixedly connected with the upper end of the middle rotating shaft 3 and the upper fixing plate 12, the upper part of the rubber elastic element II 2 is fixedly connected with the lower end of the middle rotating shaft 3 and the lower fixing plate 13, and the lower part of the rubber elastic element II 2 is fixedly connected with the lower fixing disc 18, so that the rubber elastic element I1 is fixedly arranged on a first station 21, and the rubber elastic element II 2 is fixedly arranged on a second station 22; at the moment, the first station 21 and the second station 22, and the first rubber elastic element 1 and the second rubber elastic element 2 do not interfere with each other, so that the accuracy of test data can be ensured.
As shown in fig. 3, one end of the middle rotating shaft 3 is provided with a limiting step 23 for preventing the middle rotating shaft 3 from jumping out, the other end of the middle rotating shaft 3 is provided with a limiting retainer ring 24 for preventing the middle rotating shaft 3 from jumping out, and the middle rotating shaft 3 is limited at both ends by the limiting step 23 and the limiting retainer ring 24 to prevent the middle rotating shaft 3 from jumping out. In the embodiment, the middle rotating shaft 3 is arranged in the middle assembling holes of the upper fixing plate 12 and the lower fixing plate 13 in an interference manner, during assembly, the small head end of the middle rotating shaft 3 is firstly arranged, the small head end is not provided with the limiting step 23, then the large head end of the middle rotating shaft 3 is arranged, and the large head end is provided with the limiting step 23, so that after the middle rotating shaft 3 is assembled, only the large head end with the limiting step 23 has a limiting function, and the small head end without the limiting step 23 cannot limit, so that the middle rotating shaft 3 is easy to move out in the working process; and if the two ends of the middle rotating shaft 3 are provided with the limiting steps 23, the middle rotating shaft 3 cannot be assembled into the middle assembling holes of the upper fixing plate 12 and the lower fixing plate 13 in an interference fit mode. In order to solve the problem, the scheme adds the limiting retainer ring 24 at the small head end of the middle rotating shaft 3, and the middle rotating shaft 3 is limited at two ends by the limiting step 23 and the limiting retainer ring 24 to prevent the middle rotating shaft 3 from moving. And during the assembly, the large end and the small end of the middle rotating shaft 3 can be adjusted according to actual conditions, in this embodiment, the large end of the middle rotating shaft 3 with the limiting step 23 is connected with the upper fixing plate 12, the small end of the middle rotating shaft 3 is connected with the lower fixing plate 13, and the lower end of the middle rotating shaft 3 is additionally provided with the limiting retainer ring 24.
The device for carrying out the combined loading test on the rubber elastic element of the railway vehicle also comprises a frame-type simulated vehicle body component, wherein the simulated vehicle body component forms a third frame by a base 25 and a bracket, and as shown in figure 7, a simulated bogie component is positioned in the third frame; as shown in fig. 4 and 7, a bottom bracket 27 is arranged at the upper end of the middle part of the base 25, and the simulation bogie assembly is arranged at the upper end of the bottom bracket 27 through a lower fixing plate 18; the support comprises side support columns 28 and upper support plates 29, the number of the side support columns 28 is four, the lower end of each upper support plate 29 is provided with a vertical loading oil cylinder 30 for vertically loading the rubber elastic element, and the four side support columns 28 are uniformly distributed on the peripheral side of the vertical loading oil cylinder 30; a guide device for guiding the vertical loading oil cylinder 30 is arranged between the side supporting columns 28, the guide device comprises an installation seat 32 and a guide plate 33, the guide plate 33 is fixedly connected to the side supporting columns 28 through the installation seat 32, the guide plate 33 can ensure that the power output rod 31 of the vertical loading oil cylinder vertically moves downwards for loading, the power output rod 31 of the vertical loading oil cylinder is prevented from being eccentrically loaded, the stability of vertical loading force is ensured, and the accuracy of vertical loading test data is ensured; the lower end of the power output rod 31 of the vertical loading oil cylinder is provided with a vertical loading plate 44, and the vertical loading plate 44 can increase the contact area between the power output rod 31 of the vertical loading oil cylinder and the loading disc 19, so that the power output rod 31 of the vertical loading oil cylinder can better apply vertical loading force to the loading disc 19; the lower end of the guide plate 33 is provided with a positioning column 34 which compresses the second frame and prevents the second frame from shaking, and in the loading process, the positioning column 34 is compressed at the upper end of the upper fixing disc 17 in the second frame and acts with the bottom support 27 to stabilize the second frame; the middle part of the guide plate 33 is provided with a through hole for the vertical loading oil cylinder 30 to pass through, the power output rod 31 of the vertical loading oil cylinder can move downwards through the through hole and apply a vertical load to the loading disc 19 so as to vertically load the rubber elastic element, and then the loading disc 19 transmits the vertical load to the rubber elastic element.
As shown in fig. 4 and 7, two reaction seats are arranged on the base 25, a longitudinal loading unit and a transverse loading unit are respectively arranged on the two reaction seats, specifically, the two reaction seats are a longitudinal reaction seat 35 and a transverse reaction seat 36, the longitudinal loading unit is arranged on the longitudinal reaction seat 35, the transverse loading unit is arranged on the transverse reaction seat 36, a longitudinal loading oil cylinder 37 is arranged on the longitudinal loading unit, and a transverse loading oil cylinder 39 is arranged on the transverse loading unit, as shown in fig. 5 and 8, the longitudinal loading oil cylinder 37 and the transverse loading oil cylinder 39 are perpendicular to each other, and the longitudinal loading oil cylinder 37 and the transverse loading oil cylinder 39 are both perpendicular to the middle rotating shaft 3, so as to realize a vertical, longitudinal and transverse three-way simulation loading test; acting force is applied to the stress application plate through a power output rod 38 of the longitudinal loading oil cylinder and a power output rod 40 of the transverse loading oil cylinder so as to carry out transverse loading and longitudinal loading on the rubber elastic element; the power output rod 38 of the longitudinal loading oil cylinder applies longitudinal loading force to the longitudinal loading plate 10, the longitudinal loading plate 10 transmits the longitudinal loading force to the first loading rod 7 and the second loading rod 8, the first loading rod 7 and the second loading rod 8 transmit the longitudinal loading force to the middle rotating shaft 3, and then the middle rotating shaft 3 transmits the longitudinal loading force to the first rubber elastic element 1 and the second rubber elastic element 2, so that longitudinal loading of the two rubber elastic elements is realized; the power output rod 40 of the transverse loading oil cylinder transmits a transverse loading force to the third loading rod 9, the third loading rod 9 transmits the transverse loading force to the middle rotating shaft 3, and the middle rotating shaft 3 transmits the transverse loading force to the first rubber elastic element 1 and the second rubber elastic element 2, so that the transverse loading of the two rubber elastic elements is realized; the longitudinal loading cylinder 37 and the transverse loading cylinder 39 are both provided with hinges 41 for adjusting the positions of the power output rod 38 of the longitudinal loading cylinder and the power output rod 40 of the transverse loading cylinder according to the actual working conditions.
The three independent frames are used for adjusting the vertical installation height, the horizontal installation space and the longitudinal installation space of the whole testing device according to interfaces and spaces of different testing machines, and meet the requirements of different testing machine installation spaces and rubber elastic element sample lengths.
The method for carrying out the combined loading test on the rubber elastic element of the railway vehicle by adopting the loading test device comprises the following steps:
the first step is as follows: fixedly placing a first rubber elastic element 1 on a first station 21 between an upper fixing plate 12 and a loading disc 19, fixedly placing a second rubber elastic element 2 on a second station 22 between a lower fixing plate 13 and a lower fixing disc 18, wherein the first rubber elastic element 1 and the second rubber elastic element 2 are connected in series through the upper fixing plate 12, the lower fixing plate 13 and a middle rotating shaft 3;
the second step is that: the simulated bogie assembly is pressed tightly through the bottom support 27 and the positioning column 34 to prevent the simulated bogie assembly from shaking;
the third step: starting the vertical loading oil cylinder, the longitudinal loading oil cylinder 37 and the transverse loading oil cylinder 39 at the same time; the vertical loading oil cylinder drives a power output rod 31 of the vertical loading oil cylinder to move downwards and penetrate through a through hole in the middle of the guide plate 33 to apply a vertical load to the loading disc 19, the loading disc 19 moves downwards along the upright column 20, and the vertical load is sequentially transmitted to the rubber elastic element I1, the middle rotating shaft 3 and the rubber elastic element II 2 through the loading disc 19, so that a vertical loading test is performed on the rubber elastic element I1 and the rubber elastic element II 2 which are connected in series; the longitudinal loading oil cylinder 37 drives the power output rod 38 of the longitudinal loading oil cylinder to apply longitudinal load to a longitudinal stress plate, namely a longitudinal stress plate 10, the transverse loading oil cylinder 39 drives the power output rod 40 of the transverse loading oil cylinder to apply transverse load to a transverse stress plate, namely a transverse stress plate, the longitudinal stress plate 10 and the transverse stress plate transmit the longitudinal load and the transverse load to the middle rotating shaft 3 through the connecting rod units, specifically, the longitudinal stress plate 10 transmits the longitudinal load to the middle rotating shaft 3 through the first loading rod 7 and the second loading rod 8, the transverse stress plate transmits the transverse load to the middle rotating shaft 3 through the third loading rod 9, and then the middle rotating shaft 3 transmits the longitudinal load and the transverse load to the rubber elastic element I1 and the rubber elastic element II 2, so that the rubber elastic element I1 and the rubber elastic element II 2 are vertically loaded simultaneously, Longitudinal loading and transverse loading tests.
Wherein, a first rubber elastic element 1 to be tested is fixedly arranged on a first station 21 between an upper fixing plate 12 and a loading disc 19, and a second rubber elastic element 2 is fixedly arranged on a second station 22 between a lower fixing plate 13 and a lower fixing disc 18, specifically: fixedly connecting the upper part of a rubber elastic element I1 to be tested with a loading disc 19, fixedly connecting the lower part of the rubber elastic element I1 with the upper end of a middle rotating shaft 3 and a fixing plate, fixedly connecting the upper part of a rubber elastic element II 2 with the lower end of the middle rotating shaft 3 and a lower fixing plate 13 through a limiting retainer ring 24, and fixedly connecting the lower part of the rubber elastic element II 2 with a lower fixing disc 18, so that the rubber elastic element I1 is fixedly arranged on a first station 21, and the rubber elastic element II 2 is fixedly arranged on a second station 22; compress tightly simulation bogie assembly through collet 27 and reference column 34 and prevent that simulation bogie assembly from rocking, specifically mean: the lower mounting plate 18 is placed on top of the bottom bracket 27 and the locating posts 34 are pressed against the upper mounting plate 17 to secure the dummy truck assembly via the bottom bracket 27 and the locating posts 34.
The above examples are only illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments of the present invention as required without any inventive contribution thereto after reading the present specification, but all such modifications are intended to be protected by the following claims.
Claims (10)
1. The device for performing the combined loading test on the rubber elastic element of the railway vehicle is characterized by comprising a simulated bogie assembly, wherein the simulated bogie assembly comprises a guide unit, a horizontal loading unit and a connecting rod unit, the guide unit and the horizontal loading unit are of frame structures, and the horizontal loading unit is arranged in a frame of the guide unit; the horizontal loading unit comprises a fixed plate and a middle rotating shaft (3) which is positioned between the fixed plates and is vertically arranged, the rubber elastic element is fixed between the fixed plate and the guide unit, and vertical loading is carried out on the rubber elastic element by applying vertical loading force to the guide unit downwards; the connecting rod unit comprises a first connecting rod and a second connecting rod which are perpendicular to each other, the first connecting rod and the second connecting rod are both perpendicular to the middle rotating shaft (3) and are movably connected to the middle rotating shaft (3) through universal bearings, and the middle rotating shaft (3) is loaded through the first connecting rod and the second connecting rod so as to transversely load and longitudinally load the rubber elastic element.
2. The device for the combined loading test of the rubber elastic element of the railway vehicle according to the claim 1, wherein the first connecting rod comprises a first loading rod (7) and a second loading rod (8) which are symmetrically arranged, the second connecting rod comprises a third loading rod (9) which is arranged between the first loading rod (7) and the second loading rod (8), and the first loading rod (7), the second loading rod (8) and the third loading rod (9) are all connected on the middle rotating shaft (3) through universal bearings; one end of the middle rotating shaft (3) is far away from by the first loading rod (7) and the second loading rod (8) is provided with a stress application plate, one end of the middle rotating shaft (3) is far away by the third loading rod (9) is provided with the stress application plate, the first loading rod (7), the second loading rod (8) and the third loading rod (9) are applied with loading force through the stress application plate and act on the middle rotating shaft (3), and then the loading force is transmitted to the rubber elastic element through the middle rotating shaft (3) so as to be transversely loaded and longitudinally loaded.
3. The device for the combined load test of rubber-elastic elements of railway vehicles according to claim 2, characterized in that the fixing plates comprise an upper fixing plate (12) and a lower fixing plate (13), and the middle rotating shaft (3) is connected between the upper fixing plate (12) and the lower fixing plate (13) and is positioned in the middle of the upper fixing plate (12) and the lower fixing plate (13); a plurality of supporting rods (14) located on the outer side of the middle rotating shaft (3) are evenly arranged between the upper fixing plate (12) and the lower fixing plate (13), the upper fixing plate (12), the lower fixing plate (13) and the supporting rods (14) form a first frame (15), and the middle rotating shaft (3) is located in the vertical middle of the first frame (15).
4. The device for carrying out combined loading tests on rubber elastic elements of railway vehicles according to claim 3, characterized in that a limiting ring (16) is arranged between the first loading rod (7) and the upper fixing plate (12), between the first loading rod (7) and the third loading rod (9), between the third loading rod (9) and the second loading rod (8), and between the second loading rod (8) and the lower fixing plate (13), and the positions of the first loading rod (7), the second loading rod (8) and the third loading rod (9) on the middle rotating shaft (3) are limited by the limiting ring (16).
5. The device for performing the combined loading test on the rubber elastic element of the railway vehicle according to the claim 4, characterized in that the guide unit comprises an upper fixed disc (17) and a lower fixed disc (18), a loading disc (19) is arranged below the upper fixed disc (17), the upper fixed disc (17) and the loading disc (19) are connected above the lower fixed disc (18) through a vertical column (20), and the loading disc (19) can move up and down along the vertical column (20); the upper fixed disc (17), the upright post (20) and the lower fixed disc (18) form a second frame, and the horizontal loading unit is positioned in the second frame and between the loading disc (19) and the lower fixed disc (18); a first station (21) is formed between the loading disc (19) and the upper fixing plate (12) and used for assembling the first rubber elastic element (1), a second station (22) is formed between the lower fixing disc (18) and the lower fixing plate (13) and used for assembling the second rubber elastic element (2), and double stations can be formed through the first station (21) and the second station (22) and can be used for simultaneously carrying out loading tests on the two rubber elastic elements.
6. The device for conducting combined loading tests on rubber elastic elements of railway vehicles according to claim 5, characterized in that one end of the middle rotating shaft (3) is provided with a limiting step (23) for preventing the middle rotating shaft (3) from jumping out, the other end of the middle rotating shaft (3) is provided with a limiting retainer ring (24) for preventing the middle rotating shaft (3) from jumping out, and the middle rotating shaft (3) is limited at both ends by the limiting step (23) and the limiting retainer ring (24) to prevent the middle rotating shaft (3) from jumping out.
7. The device for conducting a combined load test on a rubber-elastic element of a rail vehicle according to any one of claims 1 to 6, characterized in that it further comprises a frame-type simulated body assembly, which forms a third frame by a base (25) and a bracket, the simulated truck assembly being located within the third frame; a bottom support (27) is arranged at the upper end of the middle part of the base (25), and the simulation bogie assembly is arranged at the upper end of the bottom support (27) through a lower fixing disc (18); the support comprises a side support column (28) and an upper support plate (29), and the lower end of the upper support plate (29) is provided with a vertical loading oil cylinder (30) for vertically loading the rubber elastic element; a guide device for guiding the vertical loading oil cylinder (30) is arranged between the side supporting columns (28), the guide device comprises an installation seat (32) and a guide plate (33), the guide plate (33) is fixedly connected to the side supporting columns (28) through the installation seat (32), and the lower end of the guide plate (33) is provided with a positioning column (34) for compressing the second frame and preventing the second frame from shaking; the middle part of the guide plate (33) is provided with a through hole for the vertical loading oil cylinder (30) to pass through, and a power output rod (31) of the vertical loading oil cylinder can move downwards through the through hole and apply vertical load to the loading disc (19) so as to vertically load the rubber elastic element.
8. The device for the combined loading test of the rubber elastic elements of the railway vehicle according to claim 7, wherein the base (25) is provided with two reaction seats, the two reaction seats are respectively provided with a longitudinal loading unit and a transverse loading unit, the longitudinal loading unit is provided with a longitudinal loading oil cylinder (37), the transverse loading unit is provided with a transverse loading oil cylinder (39), the longitudinal loading oil cylinder (37) and the transverse loading oil cylinder (39) are perpendicular to each other, and the longitudinal loading oil cylinder (37) and the transverse loading oil cylinder (39) are both perpendicular to the middle rotating shaft (3); acting force is applied to the stress application plate through a power output rod (38) of the longitudinal loading oil cylinder and a power output rod (40) of the transverse loading oil cylinder to carry out transverse loading and longitudinal loading on the rubber elastic element; hinges (41) used for enabling a power output rod (38) of the longitudinal loading oil cylinder and a power output rod (40) of the transverse loading oil cylinder to be adjustable in position according to actual working conditions are arranged on the longitudinal loading oil cylinder (37) and the transverse loading oil cylinder (39).
9. Method for the combined load testing of rubber-elastic components of rail vehicles, using the device according to claims 7-8, characterized in that it comprises the following steps:
the first step is as follows: fixedly placing a first rubber elastic element (1) on a first station (21) between an upper fixing plate (12) and a loading disc (19), fixedly placing a second rubber elastic element (2) on a second station (22) between a lower fixing plate (13) and a lower fixing disc (18), wherein the first rubber elastic element (1) and the second rubber elastic element (2) are connected in series with a middle rotating shaft (3) through the upper fixing plate (12), the lower fixing plate (13);
the second step is that: the simulation bogie component is pressed tightly through the bottom support (27) and the positioning column (34) to prevent the simulation bogie component from shaking;
the third step: starting a vertical loading oil cylinder, a longitudinal loading oil cylinder (37) and a transverse loading oil cylinder (39) at the same time; the vertical loading oil cylinder drives a power output rod 31 of the vertical loading oil cylinder to move downwards and penetrate through a through hole in the middle of a guide plate (33) to apply a vertical load to a loading disc (19), the loading disc (19) moves downwards along an upright column (20), and the vertical load is sequentially transmitted to a rubber elastic element I (1), a middle rotating shaft (3) and a rubber elastic element II (2) through the loading disc (19), so that a vertical loading test is performed on the rubber elastic element I (1) and the rubber elastic element II (2) which are connected in series; the longitudinal loading oil cylinder (37) drives a power output rod (38) of the longitudinal loading oil cylinder to apply longitudinal load to a longitudinal direction stressing plate, the transverse loading oil cylinder (39) drives a power output rod (40) of the transverse loading oil cylinder to apply transverse load to a transverse direction stressing plate, the longitudinal direction stressing plate and the transverse direction stressing plate transmit the longitudinal load and the transverse load to the middle rotating shaft (3) through the connecting rod unit, then the middle rotating shaft (3) transmits the longitudinal load and the transverse load to the rubber elastic element I (1) and the rubber elastic element II (2), and therefore vertical loading, longitudinal loading and transverse loading tests are conducted on the rubber elastic element I (1) and the rubber elastic element II (2) simultaneously.
10. The method for the combined loading test of the rubber-elastic elements of the rail vehicle according to claim 9, characterized in that the first rubber-elastic element (1) to be tested is fixedly placed on a first station (21) between the upper fixing plate (12) and the loading disc (19), and the second rubber-elastic element (2) is fixedly placed on a second station (22) between the lower fixing plate (13) and the lower fixing disc (18), specifically: fixedly connecting the upper part of a first rubber elastic element (1) to be tested with a loading disc (19), fixedly connecting the lower part of the first rubber elastic element (1) with the upper end of a middle rotating shaft (3) and an upper fixing plate (12), fixedly connecting the upper part of a second rubber elastic element (2) with the lower end of the middle rotating shaft (3) and a lower fixing plate (13) through a limiting retainer ring (24), fixedly connecting the lower part of the second rubber elastic element (2) with a lower fixing disc (18), fixedly mounting the first rubber elastic element (1) on a first station (21), and fixedly mounting the second rubber elastic element (2) on a second station (22); compress tightly simulation bogie assembly through collet (27) and reference column (34) and prevent that simulation bogie assembly from rocking, specifically mean: the lower fixing disc (18) is arranged at the upper end of the bottom support (27), and the positioning column (34) is pressed at the upper end of the upper fixing disc (17), so that the simulation bogie assembly is fixedly pressed through the bottom support (27) and the positioning column (34).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323956A (en) * | 2022-01-10 | 2022-04-12 | 株洲时代新材料科技股份有限公司 | Four-way composite loading fatigue test device for rubber elastic element |
| CN114323956B (en) * | 2022-01-10 | 2023-11-03 | 株洲时代新材料科技股份有限公司 | Four-way composite loading fatigue test device for rubber elastic element |
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