Wheel wear experiment device considering wheel profile

Abstract

The invention provides a wheel wear experiment device considering a wheel profile, and relates to the field of railway experiment equipment. Comprising a test bench main body, a lower platform part, an upper platform part, a transverse loading part and a vertical loading part, the lower platform part is arranged on the test bench main body, and the lower platform part is rotatably provided with two rollers; the upper platform component is arranged above the lower platform component and comprises an upper platform, a first driving piece, an upper mounting base and a first connecting shaft assembly. By arranging the transverse loading part, the position of the first connecting shaft assembly in the horizontal direction is changed through the transverse loading part in the experiment process, so that a wheel transverse deviation scene is simulated; the load borne by the roller is changed by adjusting the vertical loading part, and wheel rail abrasion scenes under different loads are simulated; the contact relation of wheel rails is changed by setting different tapers of an adjusting base plate in the upper platform part, so that an ultrahigh scene under a curve working condition is simulated, and an abrasion experiment result is more accurate.

Description

Technical Field

[0001] The present invention relates to the field of railway experimental equipment, and particularly to a wheel wear experimental device considering wheel profiles. Background Art

[0002] With the further increase in the operating speed of high-speed trains and the diversification and complexity of the application environment, the problem of wheel-rail wear is relatively prominent. In addition, the manifestation forms of wheel-rail wear are extremely complex. The wheel wear of head and tail cars, motor and trailer cars shows differences, and the influence laws of operating routes, vehicle types, boundary conditions, etc. on wheel-rail wear are also extremely complex. Therefore, the current turning repair cost caused by wheel wear is quite large, and there is an urgent need for a more accurate wheel-rail wear coefficient diagram to predict wheel-rail wear, so as to analyze and calculate problems such as abnormal wheel-rail wear, corrugation of the track, polygonal wear of the wheel, side wear of the rail, crushing, and peeling. Therefore, it is necessary to build a wheel-rail wear test bench to draw the wear coefficient diagram.

[0003] Ying et al. abroad designed a set of experimental results of a wheel-rail contact simulation device. Through the analysis of wheel-rail wear data, a wear test bench for the wheel flange and the rail corner considering wheel-rail contact stress, creep rate, contact angle, and material hardness was established. R Lewis and U. Olofsson outlined the work carried out to produce the wear coefficient diagram of rail materials through laboratory tests on double-disk and pin-on-disk machines and measurements in the field.

[0004] However, at present, European wear coefficient diagrams are mostly used in China. Existing research shows that European wear coefficient diagrams are not suitable for directly analyzing wheel-rail wear in China. Therefore, it is necessary to study the general theory and methods for drawing wear coefficient diagrams that conform to the common wheel and rail materials in China, so as to predict the wheel wear of high-speed trains and formulate reasonable turning repair strategies.

[0005] At present, the wear experimental devices for drawing wheel-rail wear coefficient diagrams in China cannot accurately reflect the actual contact state of wheel-rail. The existing disk-disk wear experimental devices do not fully consider the specific shape of the wheel tread, which is only replaced by a simplified cylindrical surface, and the simulation of scenarios such as lateral offset and superelevation when the vehicle passes through a curve has not been realized. Summary of the Invention

[0006] The present invention provides a wheel wear experimental device considering wheel profiles to solve the problems that the existing detection equipment does not consider the specific shape of the wheel tread, and scenarios such as lateral offset, attack angle, and superelevation occur when the vehicle passes through a curve.

[0007] The present invention provides a wheel wear experimental device considering wheel profiles, including: The main body of the test bench A lower platform component is arranged on the test bench body, and the lower platform component is rotatably provided with two rollers; An upper platform component is arranged above the lower platform component, and the upper platform component includes an upper platform, a first driving member, an upper mounting seat and a first connecting shaft assembly. The upper platform is connected to the test bench body, and the upper mounting seat can be movably arranged at the bottom of the upper platform, and the first connecting shaft assembly can be rotatably arranged on the upper mounting seat. The first connecting shaft assembly is provided with two experimental wheels, and the experimental wheels are rollingly matched with the rollers in a one-to-one correspondence; the first driving member is arranged on the upper mounting seat and connected to the first connecting shaft assembly, and the first driving member is used to drive the first connecting shaft assembly to rotate; A transverse loading component is connected to the upper platform and the first connecting shaft assembly, and is used to change the position of the first connecting shaft assembly in the horizontal direction so that the test wheel squeezes the roller to simulate the lateral offset of the train roller relative to the track.

[0008] According to a wheel wear test device considering wheel profile provided by the present invention, the lateral loading component comprises: A support seat, the upper end of which is connected to the upper platform; A first adjustment structure connected to the lower end of the support seat; A transverse loading spring, wherein the transverse loading spring is horizontally arranged, one end of the transverse loading spring is connected to the first adjusting structure, and the other end of the transverse loading spring is connected to the first connecting shaft assembly, and the first adjusting structure is used to change the position of the first connecting shaft assembly in the horizontal direction.

[0009] According to a wheel wear test device considering wheel profile provided by the present invention, the first adjustment structure comprises: a first adjusting screw, the first adjusting screw being rotatably matched with the lower end of the supporting seat; A transverse loading plate is fixedly arranged at one end of the transverse loading spring. A first nut is arranged on the side of the transverse loading plate away from the transverse loading spring. The first adjusting screw is threadably matched with the first nut.

[0010] According to a wheel wear test device considering wheel profile provided by the present invention, a waist-shaped hole extending in the up-down direction is provided at the lower end of the support seat, and the first adjusting screw is installed in the waist-shaped hole through a fixing nut.

[0011] According to a wheel wear test device considering wheel profile provided by the present invention, the wheel wear test device considering wheel profile further comprises: A vertical loading component is connected to the upper platform and the upper mounting seat, and is used to change the position of the upper mounting seat in the up and down directions so that the test wheel squeezes the roller to simulate the contact relationship between the wheel and the rail under different loads of the train.

[0012] According to a wheel wear test device considering wheel profile provided by the present invention, the vertical loading component comprises: a second adjustment mechanism, the second adjustment mechanism being connected to the upper platform; A vertical loading spring is arranged along the up-down direction, the lower end of the vertical loading spring is connected to the upper mounting seat, and the upper end of the vertical loading spring is connected to the second adjusting mechanism.

[0013] According to a wheel wear test device considering wheel profile provided by the present invention, the second adjustment mechanism comprises: a second adjusting screw, wherein the upper end of the second adjusting screw is connected to the upper platform; A spring pressure plate is fixedly arranged on the upper end of the vertical loading spring, a second nut is arranged on the side of the spring pressure plate away from the vertical loading spring, and the lower end of the second adjusting screw is threadably matched with the second nut.

[0014] According to a wheel wear test device taking the wheel profile into consideration provided by the present invention, the wheel wear test device taking the wheel profile into consideration comprises four vertical loading components, wherein two of the vertical loading components are respectively arranged on both sides of the upper mounting seat, and the two vertical loading components located on the same side of the upper mounting seat are arranged at intervals along the length direction of the upper mounting seat.

[0015] According to a wheel wear test device that takes the wheel profile into consideration, the upper platform is connected to the test bench body via two support members, the two support members are spaced apart along the length direction of the upper mounting seat, the upper platform is connected to the lower end of the support member via bolts, a plurality of pads are provided between the upper platform and the lower end of the support member, and the thickness of the inner side of the pad is less than the thickness of the outer side.

[0016] According to a wheel wear test device taking wheel profile into consideration provided by the present invention, a tread is provided at the inner edge of the test wheel, and the tread is in contact with the roller.

[0017] The wheel wear test device that takes the wheel profile into consideration is provided by the present invention. By setting a lateral loading component, the horizontal position of the first connecting shaft assembly is changed by the lateral loading component during the test, so that the test wheel squeezes the roller to simulate the lateral deviation under the curved working condition, so that the wear test result is more accurate. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a front view structural schematic diagram of a wheel wear test device considering the wheel profile provided by the present invention.

[0020] Figure 2 It is a side view structural schematic diagram of a wheel wear test device considering the wheel profile provided by the present invention.

[0021] Figure 3 It is a schematic diagram of the connection relationship among the upper mounting seat, the first connecting shaft assembly and the test wheel provided by the present invention.

[0022] Figure 4 It is a schematic diagram of the connection relationship among the rolling test bench, the lower connecting shaft and the rollers provided by the present invention.

[0023] Figure 5 It is a front view structural schematic diagram of the lateral loading component provided by the present invention.

[0024] Figure 6 It is a side view structural schematic diagram of the lateral loading component provided by the present invention.

[0025] Figure 7 It is a front view structural schematic diagram of the vertical loading component provided by the present invention.

[0026] Figure 8 It is a front view structural schematic diagram of the backing plate provided by the present invention.

[0027] Figure 9 It is a side view structural schematic diagram of the backing plate provided by the present invention.

[0028] Figure 10 It is a side view structural schematic diagram of the test wheel provided by the present invention.

[0029] Figure 11 is Figure 10 a partial enlarged structural schematic diagram at I in

[0030] Reference Signs: 100, test bench main body; 200, lower platform component; 210, rolling test bench; 220, second driving member; 221, second torque sensor; 230, lower platform; 240, lower connecting shaft; 250, roller; 300, upper platform component; 310, upper platform; 320, first driving member; 330, upper mounting seat; 340, first connecting shaft assembly; 341, first torque sensor; 350, experimental wheel; 351, tread; 400, lateral loading component; 410, support seat; 420, lateral loading spring; 430, first adjusting screw; 440, lateral loading pressing plate; 450, first nut; 460, kidney-shaped hole; 500, vertical loading component; 510, vertical loading spring; 520, second adjusting screw; 530, spring pressing plate; 540, second nut; 600, support member; 610, backing plate. Detailed implementation manner

[0031] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] In the description of this specification, the description referring to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] The following is combined with Figures 1-11 to describe the specific structural schematic diagram of the wheel wear experiment device considering the wheel profile of the present invention.

[0037] Such as Figure 1 and Figure 2As shown in the figure, the wheel wear test device considering the wheel profile includes a test bench main body 100, a lower platform component 200, an upper platform component 300, and a lateral loading component 400. The lower platform component 200 is arranged on the test bench main body 100, and two rollers 250 are rotatably arranged on the lower platform component 200. The upper platform component 300 is arranged above the lower platform component 200. The upper platform component 300 includes an upper platform 310, a first driving member 320, an upper mounting seat 330, and a first connecting shaft assembly 340. The upper platform 310 is connected to the test bench main body 100. The upper mounting seat 330 is arranged at the bottom of the upper platform 310 in a vertically movable manner. The first connecting shaft assembly 340 is rotatably arranged on the upper mounting seat 330. Two test wheels 350 are arranged on the first connecting shaft assembly 340, and the test wheels 350 are in rolling cooperation with the rollers 250 one by one. The first driving member 320 is arranged on the upper mounting seat 330 and is connected to the first connecting shaft assembly 340. The first driving member 320 is used to drive the first connecting shaft assembly 340 to rotate. The lateral loading component 400 is connected to the upper platform 310 and the first connecting shaft assembly 340. The lateral loading component 400 is used to change the position of the first connecting shaft assembly 340 in the horizontal direction, so that the test wheels 350 squeeze the rollers 250 to simulate the lateral offset of the train rollers 250 relative to the track.

[0038] The wheel wear test device considering the wheel profile provided by the present invention, by setting the lateral loading component 400, changes the position of the first connecting shaft assembly 340 in the horizontal direction through the lateral loading component 400 during the test, so that the test wheels 350 squeeze the rollers 250 to simulate the lateral offset under the curve condition, making the wear test result more accurate.

[0039] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, the first driving member 320 includes a connecting shaft driving motor. The connecting shaft driving motor is fixed on the upper mounting seat 330 through a motor fixing seat, and the rotating shaft of the connecting shaft driving motor is connected to the first connecting shaft assembly 340. The first connecting shaft assembly 340 is horizontally arranged, and the first connecting shaft assembly 340 is connected by a plurality of rotating shafts using couplings. A first torque sensor 341 is arranged at one end of the first connecting shaft assembly 340 far from the connecting shaft driving motor, and the first torque sensor 341 is fixed on the upper mounting seat 330 through a fixing base.

[0040] In an embodiment of the present invention, as Figure 3 shown, guide columns are arranged on the upper part of the upper mounting seat 330, and guide holes are arranged on the upper platform 310. The guide columns pass through the guide holes, and the guide columns can move up and down in the guide holes to realize the vertical movement cooperation between the mounting seat and the upper platform 310. Preferably, two guide columns and two guide holes are respectively arranged to ensure the stability of the upper mounting seat 330 during the up and down movement process.

[0041] In one embodiment of the present invention, as Figure 5 shown, the lateral loading member 400 includes a support base 410, a first adjustment structure, and a lateral loading spring 420. The upper end of the support base 410 is connected to the upper platform 310. Specifically, the cross-section of the support base 410 is U-shaped, and the upper end of the support base 410 is connected to the upper platform 310 by bolts to facilitate the installation and disassembly of the support base 410. Of course, the upper end of the support base 410 and the upper platform 310 can also be connected by welding or other connection methods.

[0042] The first adjustment structure is connected to the lower end of the support base 410, and the support base 410 provides an installation basis for the first adjustment structure. The lateral loading spring 420 is horizontally arranged. One end of the lateral loading spring 420 is connected to the first adjustment structure, and the other end of the lateral loading spring 420 is connected to the first connecting shaft assembly 340. The first adjustment structure is used to change the position of the first connecting shaft assembly 340 in the horizontal direction. Specifically, the compression amount of the lateral loading spring 420 can be changed through the first adjustment structure, and then the position of the first connecting shaft assembly 340 in the horizontal direction can be changed, so that the test wheel 350 presses against the roller 250 to simulate the lateral offset and superelevation scenarios under curve conditions.

[0043] In one embodiment of the present invention, as Figure 5 shown, the first adjustment structure includes a first adjustment screw 430 and a lateral loading pressing plate 440. The first adjustment screw 430 is rotatably matched with the lower end of the support base 410. Specifically, a through hole is provided at the lower end of the support base 410, and the first adjustment screw 430 is rotatably installed at the lower end of the support base 410 through a first adjustment nut. Of course, the connection method between the first adjustment screw 430 and the support base 410 is not limited to this, and it can also be connected by welding or other connection methods. The lateral loading pressing plate 440 can be welded or rotatably connected to one end of the lateral loading spring 420. A first nut 450 is provided on the side of the lateral loading pressing plate 440 facing away from the lateral loading spring 420. The first nut 450 is welded or integrally formed with the lateral loading pressing plate 440, and the first adjustment screw 430 is in threaded cooperation with the first nut 450.

[0044] When conducting a wheel wear experiment, the staff use tools such as wrenches to apply an external force to rotate the first adjusting nut. Under the action of the external force, the first adjusting nut drives the first adjusting screw 430 to start rotating. Due to the thread engagement relationship between the first adjusting screw 430 and the first nut 450, when the first adjusting screw 430 rotates, the lateral loading pressure plate 440 will drive one end of the lateral loading spring 420 to move horizontally. The other end of the lateral loading spring 420 is connected to the first connecting shaft assembly 340, so that the position of the entire first connecting shaft assembly 340 changes horizontally. As the position of the first connecting shaft assembly 340 changes, the relative position between the experimental wheel 350 and the roller 250 also changes accordingly, thereby simulating the lateral offset and curve superelevation when the train passes through a curved track during actual operation. Through precise control of the rotation angle of the first adjusting nut during the entire adjustment process, fine adjustment of the compression amount of the lateral loading spring 420 can be achieved, and then precise control of the lateral offset amount between the wheel and the roller 250 can be realized to study the wheel wear under different experimental conditions and improve the accuracy and reliability of the experimental results.

[0045] It should be noted here that the first adjustment structure is not limited to the combination of the first adjusting screw 430 and the lateral loading pressure plate 440, and a hydraulic rod or other linear drive mechanisms can also be used.

[0046] In an embodiment of the present invention, as Figure 6 shown, a kidney-shaped hole 460 extending in the vertical direction is provided at the lower end of the support seat 410. The first adjusting screw 430 is inserted into the kidney-shaped hole 460. The first adjusting screw 430 is installed in the kidney-shaped hole 460 through two fixing nuts, and the first adjusting screw 430 can move up and down in the kidney-shaped hole 460. Since the vertical loading member 500 can change the position of the upper mounting seat 330 in the vertical direction, it is required that the first adjusting screw 430 has the function of moving up and down. The setting of the kidney-shaped hole 460 is precisely to meet this requirement, which provides a certain movement space for the first adjusting screw 430 in the vertical direction. When the position of the upper mounting seat 330 changes under the action of the vertical loading member 500, the first adjusting screw 430 can move up and down correspondingly in the kidney-shaped hole 460, thus avoiding possible structural interference or damage caused by rigid connection between components, ensuring the normal operation of the entire device under different load conditions and the smooth progress of the experiment. This design also facilitates the adjustment and optimization of the position of the lateral loading member 400 under different experimental conditions to better simulate the actual working conditions and improve the accuracy and reliability of the experimental results.

[0047] In an embodiment of the present invention, as Figure 1As shown, the wheel wear test device considering the wheel profile further includes a vertical loading component 500. The vertical loading component 500 is connected to the upper platform 310 and the upper mounting seat 330. The vertical loading component 500 is used to change the position of the upper mounting seat 330 in the up and down directions, so that the test wheel 350 squeezes the roller 250 in the up and down directions to simulate the contact relationship between the wheel and the rail under different loads of the train.

[0048] In an embodiment of the present invention, as Figure 7 shown, the vertical loading component 500 includes a second adjustment mechanism and a vertical loading spring 510. The second adjustment mechanism is connected to the upper platform 310; the vertical loading spring 510 is arranged in the up and down direction. The lower end of the vertical loading spring 510 is connected to the upper mounting seat 330, and the upper end of the vertical loading spring 510 is connected to the second adjustment mechanism. The second adjustment mechanism is used to change the compression amount of the vertical loading spring 510 to change the height of the upper mounting seat 330, and further adjust the pressure of the test wheel 350 on the roller 250 to simulate the contact relationship between the wheel and the rail under different loads of the train.

[0049] In an embodiment of the present invention, as Figure 7 shown, the second adjustment mechanism includes a second adjustment screw 520 and a spring pressing plate 530. The upper end of the second adjustment screw 520 is connected to the upper platform 310. Specifically, the upper platform 310 is provided with a mounting hole, and the second adjustment screw 520 is rotatably passed through the mounting hole. Two second adjustment nuts are arranged at the upper end of the second adjustment screw 520 to play a limiting role, and the two second adjustment nuts are spaced apart by a certain distance. The spring pressing plate 530 is fixedly arranged at the upper end of the vertical loading spring 510, and the spring pressing plate 530 is welded or interference-fitted with the upper end of the vertical loading spring 510. A second nut is arranged on the side of the spring pressing plate 530 facing away from the vertical loading spring 510. The second nut is welded or integrally formed with the spring pressing plate 530, and the lower end of the second adjustment screw 520 is in threaded cooperation with the second nut.

[0050] During use, the staff uses tools, such as wrenches, to apply an external force to rotate the second adjusting nut. The second adjusting nut starts to rotate under the action of the external force, and the second adjusting nut drives the second adjusting screw 520 to start rotating. Since the second adjusting screw 520 is in threaded engagement with the second nut, when the second adjusting screw 520 rotates, the spring pressing plate 530 will drive the upper end of the vertical loading spring 510 to move in the up and down directions, and the compression amount of the entire vertical loading spring 510 changes, thereby changing the position of the upper mounting seat 330 in the up and down directions; the change in the position of the upper mounting seat 330 will cause the test wheel 350 to squeeze the roller 250 in the up and down directions, so as to simulate the wheel-rail contact relationship of the train under different loads. By precisely controlling the rotation angle of the second adjusting nut, the fine adjustment of the compression amount of the vertical loading spring 510 can be achieved, and the pressure between the test wheel 350 and the roller 250 can be precisely controlled. This adjustment method can simulate the wheel-rail contact relationship of the train under different load conditions, making the experimental results more accurate and reliable.

[0051] It should be noted here that the second adjusting structure is not limited to the combination of the second adjusting screw 520 and the spring pressing plate 530, and a hydraulic rod or other linear drive mechanisms can also be used.

[0052] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, the wheel wear test device considering the wheel profile includes four vertical loading components 500. Among them, two vertical loading components 500 are respectively arranged on both sides of the upper mounting seat 330, and the two vertical loading components 500 located on the same side of the upper mounting seat 330 are arranged at intervals along the length direction of the upper mounting seat 330.

[0053] It should be noted here that the number of the vertical loading components 500 is not limited to four, and can also be six or more, which is specifically determined according to actual needs. When it is necessary to change the position of the upper mounting seat 330 in the up and down directions, several second adjusting nuts can be rotated simultaneously, or only the second adjusting nuts on the same side can be rotated. The adjustment distances of several second adjusting nuts can be the same or different, which is specifically determined according to the experimental requirements.

[0054] In an embodiment of the present invention, as Figure 1 、 Figure 8 and Figure 9As shown in the figure, the upper platform 310 is connected to the test bench main body 100 through two support members 600. The two support members 600 are arranged at intervals along the length direction of the upper mounting seat 330. The support members 600 are in a rod-like structure, and the lengths of the two support members 600 are the same to ensure that the upper mounting seat 330 is in a horizontal state in the initial state. The upper platform 310 is bolted to the lower ends of the support members 600, and a plurality of backing plates 610 are provided between the upper platform 310 and the lower ends of the support members 600. The backing plates 610 are in a rectangular sheet structure, and the backing plates 610 are provided with through holes so that the backing plates 610 can pass through. The thickness of the inner side of the backing plate 610 is smaller than the thickness of the outer side. Preferably, the thickness of the inner side of the backing plate 610 is 3 ± 0.01 mm, and the thickness of the outer side of the backing plate 610 is 3.85 ± 0.01 mm. By installing backing plates 610 with different tapers on the upper platform 310, the inclination of the experimental wheel 350 at different angles is realized to simulate the contact relationship between the wheel and the rail under different superelevations. Different tapers of the backing plates 610 correspond to different superelevation working conditions.

[0055] In an embodiment of the present invention, as Figure 10 and Figure 11 shown, a tread 351 is provided at the inner edge of the experimental wheel 350, and the tread 351 contacts the roller 250. By providing the tread 351 on the experimental wheel 350, the shape of the experimental wheel profile is made consistent with the shape of the actual wheel tread 351. Setting the tread 351 on the experimental wheel 350 can ensure that the experimental conditions are as consistent as possible with the actual train operation conditions, thereby improving the accuracy and reliability of the experimental results. The tread 351 of the experimental wheel 350 contacts the roller 250, simulating the contact relationship between the actual train wheel and the track, and can more realistically reflect the wear conditions of the wheel under different working conditions, including straight running, curve running, different loads, etc., ensuring the authenticity of the experimental conditions.

[0056] In an embodiment of the present invention, as Figure 1 and Figure 4As shown in the figure, the lower platform component 200 includes two rolling test benches 210, two second driving members 220 and a lower platform 230. The lower platform 230 is arranged on the test bench main body 100. The two rolling test benches 210 are arranged on the lower platform 230. Two rollers 250 are respectively installed on the two rolling test benches 210 through lower connecting shafts 240. The lower connecting shafts 240 are rotatably connected to the rolling test benches 210 to achieve rotational cooperation with the rolling test benches 210. The two second driving members 220 are arranged on the lower platform 230. The rotating shafts of the two second driving members 220 are respectively connected to the two lower connecting shafts 240. By driving the two lower connecting shafts 240 to rotate respectively through the two second driving members 220, the two rollers 250 can be driven to rotate, and the wheel-rail wear test of the wheel set can be simulated. The second driving member 220 is a driving motor. When the two driving motors rotate, their speeds are the same. By controlling the first driving member 320 and the second driving member 220 to rotate at different speeds, the wear conditions under different slip rates of the wheel-rail during the train running process can be simulated.

[0057] In a preferred embodiment of the present invention, both the first driving member 320 and the second driving member 220 are frequency conversion motors. By controlling the first driving member 320 and the second driving member 220 to rotate at different speeds, the relative slip speed between the experimental wheel 350 and the roller pair is changed to simulate the real wheel-rail wear condition.

[0058] Preferably, second torque sensors 221 are arranged on the rotating shafts of the first driving member 320 and the second driving member 220. The second torque sensors 221 are fixed on the lower platform 230 through fixed bases.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wheel wear test device considering wheel profile, characterized in that: include: Test bench body (100), A lower platform component (200) is disposed on the test bench body (100), and the lower platform component (200) is rotatably provided with two rollers (250); An upper platform component (300) is arranged above the lower platform component (200), the upper platform component (300) comprising an upper platform (310), a first driving member (320), an upper mounting seat (330) and a first connecting shaft assembly (340), the upper platform (310) being connected to the test bench body (100), the upper mounting seat (330) being movably arranged at the bottom of the upper platform (310) up and down, the first connecting shaft assembly (340) being rotatably arranged on the upper mounting seat (330), the first connecting shaft assembly (340) being provided with two experimental wheels, the experimental wheels rollingly cooperating with the rollers (250) in a one-to-one correspondence; the first driving member (320) being arranged on the upper mounting seat (330) and connected to the first connecting shaft assembly (340), the first driving member (320) being used to drive the first connecting shaft assembly (340) to rotate; A transverse loading component (400) is connected to the upper platform (310) and the first connecting shaft assembly (340), and the transverse loading component (400) is used to change the position of the first connecting shaft assembly (340) in the horizontal direction so that the test wheel squeezes the roller (250) to simulate the lateral offset of the train roller (250) relative to the track.

2. The wheel wear test device considering wheel profile according to claim 1, characterized in that: The transverse loading component (400) comprises: A support seat (410), the upper end of the support seat (410) being connected to the upper platform (310); a first adjustment structure, the first adjustment structure being connected to the lower end of the support seat (410); A transverse loading spring (420), wherein the transverse loading spring (420) is arranged horizontally, one end of the transverse loading spring (420) is connected to the first adjustment structure, and the other end of the transverse loading spring (420) is connected to the first connecting shaft assembly (340), and the first adjustment structure is used to change the position of the first connecting shaft assembly (340) in the horizontal direction.

3. The wheel wear test device considering wheel profile according to claim 2, characterized in that: The first adjustment structure comprises: a first adjusting screw (430), the first adjusting screw (430) being rotatably engaged with the lower end of the supporting seat (410); A transverse loading pressure plate (440) is fixedly arranged at one end of the transverse loading spring (420), and a first nut (450) is arranged on a side of the transverse loading pressure plate (440) away from the transverse loading spring (420), and the first adjusting screw (430) is threadedly matched with the first nut (450).

4. The wheel wear test device considering wheel profile according to claim 3, characterized in that: A waist-shaped hole (460) extending in the up-down direction is provided at the lower end of the support seat (410), and the first adjusting screw rod (430) is installed in the waist-shaped hole (460) via a fixing nut.

5. The wheel wear test device considering wheel profile according to any one of claims 1 to 4, characterized in that: The wheel wear test device considering the wheel profile also includes: A vertical loading component (500) is connected to the upper platform (310) and the upper mounting seat (330), and the vertical loading component (500) is used to change the position of the upper mounting seat (330) in the up and down directions so that the test wheel (350) squeezes the roller (250) to simulate the contact relationship between the wheel and the rail under different train loads.

6. The wheel wear test device considering wheel profile according to claim 5, characterized in that: The vertical loading component (500) comprises: a second adjustment mechanism, the second adjustment mechanism being connected to the upper platform (310); A vertical loading spring (510), wherein the vertical loading spring (510) is arranged in the up-down direction, the lower end of the vertical loading spring (510) is connected to the upper mounting seat (330), and the upper end of the vertical loading spring (510) is connected to the second adjustment mechanism.

7. The wheel wear test device considering wheel profile according to claim 6, characterized in that: The second adjustment mechanism comprises: a second adjusting screw (520), the upper end of the second adjusting screw (520) being connected to the upper platform (310); A spring pressure plate (530), the spring pressure plate (530) being fixedly arranged at the upper end of the vertical loading spring (510), a second nut being arranged on a side of the spring pressure plate (530) facing away from the vertical loading spring (510), and a lower end of the second adjusting screw (520) being threadably engaged with the second nut.

8. The wheel wear test device considering wheel profile according to claim 7, characterized in that: The wheel wear test device considering the wheel profile comprises four vertical loading components (500), wherein two vertical loading components (500) are respectively arranged on both sides of the upper mounting seat (330), and the two vertical loading components (500) located on the same side of the upper mounting seat (330) are arranged at intervals along the length direction of the upper mounting seat (330).

9. The wheel wear test device considering wheel profile according to any one of claims 1 to 4, characterized in that: The upper platform (310) is connected to the test bench body (100) via two support members (600), the two support members (600) are arranged at intervals along the length direction of the upper mounting seat (330), the upper platform (310) and the lower ends of the support members (600) are connected via bolts, a plurality of pads (610) are provided between the upper platform (310) and the lower ends of the support members (600), and the thickness of the inner side of the pads (610) is smaller than the thickness of the outer side.

10. The wheel wear test device considering wheel profile according to claim 9, characterized in that: A tread (351) is provided on the inner edge of the experimental wheel (350), and the tread (351) is in contact with the roller (250).

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