A force-measuring wheel alignment calibration test bench

Abstract

The embodiment of the present application provides a dynamometric wheelset calibration test bench, including a test bench base platform and a longitudinal dynamometric system, wherein the longitudinal dynamometric system is installed on the test bench base platform; the longitudinal dynamometric system includes a longitudinal dynamometric device, wherein the longitudinal dynamometric device includes: a longitudinal mounting platform; a longitudinal slide, wherein the longitudinal slide is slidably connected to the longitudinal mounting platform and the longitudinal slide can slide in the longitudinal direction on the longitudinal mounting platform; a vertical support assembly, which is installed on the longitudinal slide and is used to support the wheels of the dynamometric wheelset; a three-force sensor, which is fixed to the vertical support assembly; wherein the three-force sensor is used to obtain the support reaction forces in three directions when the wheels of the dynamometric wheelset are subjected to a preset vertical load and the longitudinal slide is subjected to a preset longitudinal load. The embodiment of the present application solves the technical problem that the traditional dynamometric wheelset calibration test bench can only perform static dynamometric calibration in the vertical direction or static dynamometric calibration in the lateral direction.

Description

Technical Field

[0001] This application relates to the technical field of calibration of force-measuring wheel sets, and specifically, to a calibration test bench for force-measuring wheel sets. Background Art

[0002] The force-measuring wheel set is a core sensor component in the dynamic test research of rail vehicles. The quality of its performance directly affects the evaluation results of the test object. The calibration test bench for force-measuring wheel sets is a special equipment for calibrating the output characteristics of force-measuring wheel sets and testing various performance indicators of force-measuring wheel sets. The calibration of force-measuring wheel sets is an important link in the research and application of force-measuring wheel sets.

[0003] With the rapid development of China's railway, the manufacturing technology of locomotives and rolling stock has been greatly improved, and higher requirements have been put forward for the performance of force-measuring wheel sets. The previous calibration methods for force-measuring wheel sets, whether in terms of the equipment adaptation ability, the accuracy and integrity of the calibration results, can no longer meet the needs of relevant scientific research activities. It has become increasingly urgent to develop more scientific and advanced calibration equipment for force-measuring wheel sets.

[0004] The traditional calibration test bench for force-measuring wheel sets can only perform static force calibration in the vertical direction or static force calibration in the lateral direction.

[0005] Therefore, the traditional calibration test bench for force-measuring wheel sets can only perform static force calibration in the vertical direction or static force calibration in the lateral direction, which is a technical problem that needs to be urgently solved by those skilled in the art.

[0006] The above information disclosed in the background art is only used to enhance the understanding of the background of this application, and therefore it may contain information on the prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0007] Embodiments of this application provide a calibration test bench for force-measuring wheel sets to solve the technical problem that the traditional calibration test bench for force-measuring wheel sets can only perform static force calibration in the vertical direction or static force calibration in the lateral direction.

[0008] Embodiments of this application provide a calibration test bench for force-measuring wheel sets, including a test bench base platform and a longitudinal force-measuring system, and the longitudinal force-measuring system is installed on the test bench base platform;

[0009] The longitudinal force-measuring system includes a longitudinal force-measuring device, and the longitudinal force-measuring device includes:

[0010] A longitudinally installed platform;

[0011] A longitudinal sliding table, the longitudinal sliding table is slidably connected to the longitudinally installed platform and the longitudinal sliding table can slide along the longitudinal direction on the longitudinally installed platform;

[0012] A vertical support assembly is installed on the longitudinal slide for supporting the wheels of the force-measuring wheel set.

[0013] A three-component force sensor is fixed to the vertical support assembly.

[0014] Wherein, the three-component force sensor is used to obtain the reaction forces in three directions when the wheels of the force-measuring wheel set bear a preset vertical load and the longitudinal slide bears a preset longitudinal load.

[0015] Due to the adoption of the above technical solutions in the embodiments of the present application, the following technical effects are achieved:

[0016] The longitudinal installation platform is the installation foundation of the longitudinal force-measuring device. The two wheels of the force-measuring wheel set are placed on the vertical support assemblies of the two longitudinal force-measuring devices. A preset vertical load is applied to the wheels of the force-measuring wheel set. At the same time, a preset longitudinal load is also applied to the longitudinal slide, that is, loads are applied in both the vertical and longitudinal directions simultaneously. In this way, the longitudinal force-measuring system can achieve force calibration with loads applied in both the vertical and longitudinal directions simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0018] Figure 1 is a schematic diagram of the force-measuring wheel set calibration test bench according to the embodiments of the present application;

[0019] Figure 2 is Figure 1 the front view of the shown force-measuring wheel set calibration test bench;

[0020] Figure 3 is Figure 1 the side view of the shown force-measuring wheel set calibration test bench;

[0021] Figure 4 is Figure 1 the partial schematic diagram of the shown force-measuring wheel set calibration test bench;

[0022] Figure 5 is Figure 4 the partial schematic diagram of the shown force-measuring wheel set calibration test bench;

[0023] Figure 6 is Figure 5 the partial enlarged view of;

[0024] Figure 7 is Figure 1 the partial schematic diagram of the longitudinal force-measuring system and the vertical force-measuring system of the shown force-measuring wheel set calibration test bench;

[0025] Figure 8 is Figure 7 a side view of;

[0026] Figure 9 is Figure 1 a schematic diagram of the relative positions of the lateral force measuring system of the calibration test bench and the force measuring wheel set shown by the force measuring wheel set;

[0027] Figure 10 is Figure 9 a front view of;

[0028] Figure 11 is Figure 9 a side view of.

[0029] Reference numerals:

[0030] 100 test bench base platform, 110 lifting lugs, 120 support legs,

[0031] 211 vertical support rollers, 212 support roller mounting brackets, 213 three-component force sensors at the bottom of the rollers, 214 lateral sliding table, 214-1 lower sliding block of the lateral sliding table, 216 lateral moving lead screw, 216-1 threaded rod of the lateral moving lead screw,

[0032] 221 vertical support rails, 222 rail mounting brackets,

[0033] 223 three-component force sensors at the bottom of the rails,

[0034] 231 longitudinal sliding table, 231-1 lateral guide grooves,

[0035] 241 gantry, 241-1 gantry columns, 241-2 gantry cross beam, 242 vertical loading actuator, 243 vertical pressing beam,

[0036] 251 lateral limiting device, 252 vertical guide rails, 252-1 strip rails, 252-2 strip blocks, 253 vertical sliders, 254 vertical guide transition parts,

[0037] 260 longitudinal mounting platform, 261 longitudinal guide grooves,

[0038] 270 longitudinal loading lead screw, 271 threaded rod of the longitudinal loading lead screw,

[0039] 310 lateral support seats,

[0040] 320 lateral connectors, 321 lateral connector main bodies, 322 lateral connector support ribs, 323 lateral connector stiffening ribs,

[0041] 330 load sensors, 340 loading roller mounting brackets, 350 lateral loading rollers, 360 lateral loading actuators,

[0042] 371 transverse loading guide rail, 372 transverse slider. Detailed implementation manner

[0043] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the exemplary embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0044] Embodiment 1

[0045] As Figure 1 , Figure 2 and Figure 3 shown, the force measuring wheel calibration test bench of the embodiment of the present application includes:

[0046] Test bench base platform 100;

[0047] Longitudinal force measuring system, detachably mounted on the test bench base platform 100;

[0048] Vertical force measuring system, detachably mounted on the test bench base platform 100;

[0049] Transverse force measuring system, detachably mounted on the test bench base platform 100.

[0050] The force measuring wheel calibration test bench of the embodiment of the present application can achieve static force measuring calibration and dynamic force measuring calibration in the vertical direction, static force measuring calibration and dynamic force measuring calibration in the horizontal direction, and static force measuring calibration and dynamic force measuring calibration of the vertical and longitudinal combinations.

[0051] The following will separately describe each force measuring system of the force measuring wheel calibration test bench of the embodiment of the present application.

[0052] Regarding the test bench base platform:

[0053] As Figure 1 and Figure 2As shown, the test bench base platform 100 is fixed to the foundation of the laboratory parameter test bench and serves as the foundation for the entire force-measuring wheel pair calibration test bench. To ensure the strength and performance of the test bench base platform, HT300 is used as the material. After casting, the test bench base platform is annealed to eliminate casting stress. After rough machining, flaw detection inspection is carried out in accordance with relevant standards. After passing the inspection, the platform is subjected to secondary aging treatment to eliminate the residual internal stress of the casting, and finally, finish machining is carried out. The floor area is approximately 6.27 m × 3.9 m. The upper part of the platform is provided with a cross-shaped T-slot, which is convenient for installing and fixing other components of the test system. Lifting lugs 110 are provided at its four corners for facilitating the overall movement of the test platform. Eight support legs 120 are provided below the platform for fixing to the lower parameter table foundation.

[0054] Regarding the longitudinal force measuring system and the vertical force measuring system, the two are combined together without a clear separation. Below, an explanation will be given mainly from the perspective of the longitudinal force measuring system.

[0055] The longitudinal force-measuring system includes two longitudinal force-measuring devices, and one longitudinal force-measuring device corresponds to one wheel of the force-measuring wheel pair. The longitudinal force-measuring device is used to apply longitudinal load and vertical load to the wheel of the corresponding force-measuring wheel pair and perform force measurement calibration.

[0056] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 shown, the longitudinal force-measuring device includes:

[0057] A longitudinally installed platform 260;

[0058] A longitudinal sliding table 231, which is slidably connected to the longitudinally installed platform 260 and can slide along the longitudinal direction on the longitudinally installed platform 260;

[0059] A vertical support assembly, installed on the longitudinal sliding table, for supporting the wheel of the force-measuring wheel pair;

[0060] A three-component force sensor, fixed to the vertical support assembly;

[0061] Among them, the three-component force sensor is used to obtain the reaction forces in three directions when the wheel of the force-measuring wheel pair bears a preset vertical load and the longitudinal sliding table bears a preset longitudinal load.

[0062] The longitudinal installation platform is the installation foundation of the longitudinal force measuring device. The two wheels of the force measuring wheel set are placed on the vertical support components of the two longitudinal force measuring devices. A preset vertical load is applied to the wheels of the force measuring wheel set. At the same time, the longitudinal sliding table is also loaded with a preset longitudinal load, that is, loads are applied in both the vertical and longitudinal directions simultaneously. In this way, the longitudinal force measuring system can achieve force calibration with loads applied in both the vertical and longitudinal directions simultaneously.

[0063] Specifically, the longitudinal direction is consistent with the traveling direction of the force measuring wheel set.

[0064] During implementation, as Figure 7 and Figure 8 shown, the longitudinal installation platform 260 has a longitudinal guide groove 261, and the guiding direction of the longitudinal guide groove is consistent with the longitudinal direction;

[0065] The bottom of the longitudinal sliding table 231 has a longitudinal sliding table lower slider, and the longitudinal sliding table lower slider is placed in the longitudinal guide groove 261 and the longitudinal sliding table lower slider can slide along the guiding direction of the longitudinal guide groove 261;

[0066] Among them, the width of the notch of the longitudinal guide groove 261 is smaller than the width of the bottom of the longitudinal guide groove 261, and the cross-sectional shape of the longitudinal sliding table lower slider is consistent with the cross-sectional shape of the longitudinal guide groove 261.

[0067] The cooperation mode of the longitudinal guide groove and the longitudinal sliding table lower slider realizes the sliding of the longitudinal sliding table along the longitudinal direction on the longitudinal installation platform through a simple structure. The structural mode that the width of the notch of the longitudinal guide groove is smaller than the width of the bottom, and the cross-sectional shape of the longitudinal sliding table lower slider is consistent with the cross-sectional shape of the longitudinal guide groove. In this way, when the longitudinal sliding table lower slider is clamped in the longitudinal guide groove, the longitudinal sliding table lower slider will not break away from the notch of the longitudinal guide groove.

[0068] During implementation, the longitudinal sliding table has a longitudinal sliding table threaded hole along the longitudinal direction;

[0069] As Figure 7 and Figure 8 shown, the longitudinal force measuring device further includes:

[0070] A longitudinal loading lead screw 270, fixed to the bottom of the longitudinal guide groove 261, and the threaded rod 271 of the longitudinal loading lead screw is in threaded cooperation with the longitudinal sliding table threaded hole;

[0071] Among them, the longitudinal loading lead screw 270 is used to apply a longitudinal load to the longitudinal sliding table.

[0072] The cooperation between the longitudinal loading lead screw and the longitudinal sliding table threaded hole enables a longitudinal load to be applied to the longitudinal sliding table.

[0073] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 shown, the vertical support assembly includes:

[0074] A vertical support roller 211 for supporting the wheels of the force measuring wheel set;

[0075] A support roller mounting bracket 212, where the vertical support roller 211 is vertically installed at the support roller mounting bracket 212 and the vertical support roller 211 can rotate vertically;

[0076] The bottom three-component force sensor includes a roller bottom three-component force sensor 213 fixed below the support roller mounting bracket 212; the longitudinal slide 231 is fixed below the roller bottom three-component force sensor 213;

[0077] Wherein, the roller bottom three-component force sensor 213 is used to obtain the reaction forces in three directions when the wheels of the force measuring wheel set bear a preset vertical load and rotate at a preset speed, driving the vertical support roller 211 to rotate.

[0078] The two wheels of the force measuring wheel set are placed on the vertical support rollers of the two support assemblies. The vertical support rollers play a supporting role for the wheels of the force measuring wheel set. A preset vertical load is applied to the wheels of the force measuring wheel set, and at the same time, the wheels rotate at a preset speed. At this time, the wheels of the force measuring wheel set will drive the vertical support rollers to rotate, and the roller bottom three-component force sensor can obtain the reaction forces in three directions and output them. In this way, the dynamic force measurement calibration of the force measuring wheel set in the vertical direction is achieved.

[0079] In practice, the roller bottom three-component force sensor is also used to obtain the reaction forces in three directions when the wheels of the force measuring wheel set bear a preset vertical load and rotate at a preset speed, driving the vertical support roller to rotate, and the longitudinal slide bears a preset longitudinal load.

[0080] A preset vertical load is applied to the wheels of the force-measuring axle, and the wheels rotate at a preset speed. At the same time, a preset longitudinal load is also applied to the longitudinal slide. In this state, the three-component force sensor at the bottom of the roller can obtain the reaction forces in three directions and output them. In this way, the dynamic force measurement calibration of the force-measuring axle in the vertical and longitudinal directions is achieved. It should be noted that when the force-measuring axle is not placed on the vertical support roller, the longitudinal slide can move along the longitudinal direction on the longitudinal mounting platform. When the force-measuring axle is placed on the vertical support roller and the dynamic force measurement calibration of the force-measuring axle in the vertical and longitudinal directions is carried out, according to the magnitude of the preset longitudinal load, in most cases, although the longitudinal slide bears the longitudinal load, the longitudinal slide does not undergo relative sliding in the longitudinal direction. Only when the longitudinal load is very large, the longitudinal slide will undergo relative sliding in the longitudinal direction. The dynamic force measurement calibration requires the reaction force data of the three-component force sensor at the bottom of the roller before the longitudinal slide undergoes relative sliding in the longitudinal direction.

[0081] Specifically, there can be multiple values for the preset vertical load, and there can be multiple values for the preset speed of wheel rotation.

[0082] Specifically, the support roller mounting frame has a horizontally fixed central axis of the support roller mounting frame. The central through-hole of the vertical support roller passes through the central axis of the support roller mounting frame, and the vertical rotation is that the vertical support roller rotates around the central axis of the support roller mounting frame.

[0083] During implementation, as Figure 7 and Figure 8 shown, the longitudinal force measuring device further includes:

[0084] A transverse slide 214, slidably connected to the longitudinal slide 231 and the transverse slide 214 can slide along the transverse direction on the longitudinal slide 231;

[0085] wherein, the three-component force sensor 213 at the bottom of the roller is fixed on the transverse slide 214, and the transverse direction is the same as the thickness direction of the vertical support roller.

[0086] The wheel of the force-measuring axle has a certain thickness itself. The thickness of the vertical support roller is less than that of the wheel of the force-measuring axle. In this way, under the condition that the values of the preset vertical load and the preset rotational speed of the wheel remain unchanged, the contact point between the vertical support roller and the wheel of the force-measuring axle should be able to be adjusted in the transverse direction, so as to obtain a more complete dynamic force-measuring calibration. By interactively connecting the transverse slide on the longitudinal slide, the sliding of the transverse slide in the transverse direction is realized, so that the vertical support roller can slide in the transverse direction under the condition that the position of the longitudinal slide in the transverse direction remains unchanged. When the position of the force-measuring axle remains unchanged, the contact point between the vertical support roller and the wheel of the force-measuring axle can be adjusted in the transverse direction.

[0087] Specifically, the range in which the transverse slide can slide on the longitudinal slide in the transverse direction is greater than 0 mm and less than or equal to 140 mm. This corresponds to the range in which the contact point between the vertical support roller and the wheel of the force-measuring axle can be adjusted in the transverse direction.

[0088] The range in which the above-mentioned transverse slide can slide on the longitudinal slide in the transverse direction is relatively large, and it can adapt to the wheels of various force-measuring axles.

[0089] During implementation, as Figure 7 and Figure 8 shown, the longitudinal slide 231 has a transverse guiding groove 231-1, and the guiding direction of the transverse guiding groove 231-1 is the same as the transverse direction;

[0090] The bottom of the transverse slide has a transverse slide lower slider 214-1. The transverse slide lower slider 214-1 is placed in the transverse guiding groove 231-1 and the transverse slide lower slider 214-1 can slide along the guiding direction of the transverse guiding groove 231-1;

[0091] Among them, the width of the notch of the transverse guiding groove 231-1 is less than the width of the bottom of the transverse guiding groove 231-1, and the cross-sectional shape of the transverse slide lower slider 214-1 is the same as the cross-sectional shape of the transverse guiding groove 231-1.

[0092] The way of matching the transverse guiding groove and the transverse slide lower slider realizes the sliding of the transverse slide on the longitudinal slide in the transverse direction through a simple structure. The structural way that the width of the notch of the transverse guiding groove is less than the width of the bottom, and the cross-sectional shape of the transverse slide lower slider is the same as the cross-sectional shape of the transverse guiding groove. In this way, when the transverse slide lower slider is clamped in the transverse guiding groove, the transverse slide lower slider will not break away from the notch of the transverse guiding groove.

[0093] During implementation, as Figure 7 and Figure 8As shown, the transverse slide has a transverse slide threaded hole in the transverse direction;

[0094] The longitudinal force measuring device further includes:

[0095] A transverse moving lead screw 216, fixed to the bottom of the transverse guide groove 231-1, and the threaded rod 216-1 of the transverse moving lead screw is in threaded fit with the transverse slide threaded hole;

[0096] Wherein, the transverse moving lead screw 216 is used to drive the transverse slide 214 to move relative to the longitudinal slide 231 in the transverse direction, so that the contact position between the vertical support roller 211 and the wheels of the force measuring wheel pair can move in the transverse direction.

[0097] The cooperation between the transverse moving lead screw and the transverse slide threaded hole enables the transverse slide to move relative to the longitudinal slide in the transverse direction, and the movement has high precision and the moving distance is controllable.

[0098] Specifically, the pitch of the threaded rod 216-1 of the transverse moving lead screw is greater than or equal to 0.8 mm and less than or equal to 1.5 mm. The pitch of the threaded rod of the transverse moving lead screw determines the precision of the movement of the contact point between the vertical support roller and the wheels of the force measuring wheel pair in the transverse direction.

[0099] Specifically, the pitch of the threaded rod 216-1 of the transverse moving lead screw is 1 mm.

[0100] During implementation, as Figure 7 and Figure 8 shown, the vertical support assembly further includes:

[0101] A vertical support rail 221 and a rail mounting bracket 222, the vertical support rail 221 is fixed on the rail mounting bracket 222;

[0102] The three-component force sensor further includes a three-component force sensor 223 at the bottom of the rail, fixed under the rail mounting bracket 222 and above the longitudinal slide 231;

[0103] Wherein, the three-component force sensor 223 at the bottom of the rail is used to obtain the reaction forces in three directions when the wheels of the force measuring wheel pair bear a preset vertical load and the vertical support rail statically supports the wheels of the force measuring wheel pair.

[0104] The two wheels of the force measuring wheel pair are placed on two vertical support rails. The vertical support rails play a supporting role for the wheels of the force measuring wheel pair. When a preset vertical load is applied to the wheels of the force measuring wheel pair, the three-component force sensor at the bottom of the rail can obtain the reaction forces in three directions and output them. In this way, the static force measurement and calibration of the force measuring wheel pair in the vertical direction are realized.

[0105] During implementation, as Figure 7 and Figure 8 shown, the three-component force sensor 223 at the bottom of the track is also used to obtain the reaction forces in three directions when the wheels of the force-measuring wheel set bear a preset vertical load and the wheels of the force-measuring wheel set are statically supported by the vertical support track 221, and the longitudinal slide 231 bears a preset longitudinal load.

[0106] The two wheels of the force-measuring wheel set are placed on two vertical support tracks. The vertical support tracks play a supporting role for the wheels of the force-measuring wheel set. A preset vertical load is applied to the wheels of the force-measuring wheel set; at the same time, the longitudinal slide is also loaded with a preset longitudinal load. In this state, the three-component force sensor at the bottom of the track can obtain the reaction forces in three directions and output them. In this way, the static force measurement calibration of the force-measuring wheel set in the vertical direction and the longitudinal direction is realized. When the force-measuring wheel set is placed on the vertical support track and the static force measurement calibration of the force-measuring wheel set is carried out in the vertical direction and the longitudinal direction, according to the magnitude of the preset longitudinal load, in most cases, although the longitudinal slide bears the longitudinal load, the longitudinal slide does not have relative sliding in the longitudinal direction. Only when the longitudinal load is very large, the longitudinal slide will have relative sliding in the longitudinal direction. The static force measurement calibration requires the reaction force data of the three-component force sensor at the bottom of the track before the longitudinal slide has relative sliding in the longitudinal direction.

[0107] During implementation, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the longitudinal force measurement device further includes:

[0108] A gantry 241, one gantry corresponds to one vertical support roller. The gantry includes two gantry columns 241-1 and a gantry cross beam 241-2. The gantry cross beam 241-2 is fixedly installed between the two gantry columns 241-1, and the gantry cross beam 241-2 can move up and down along the gantry columns 241-1 and be fixed after moving;

[0109] A vertical loading actuator 242, the vertical loading actuator 242 is hoisted under the gantry cross beam 241-2, and the vertical loading actuator 242 can move along the gantry cross beam 241-2 and be fixed after moving;

[0110] A vertical pressing beam 243, installed at the lower end of the vertical loading actuator 242, and the vertical pressing beam 243 is used to press on one axle box of the force-measuring wheel set;

[0111] Among them, the vertical loading actuator 242 is used to apply a vertical load to an axle box of the force measuring wheel set through the vertical pressing beam 243, so that the wheel of the force measuring wheel set bears a preset vertical load.

[0112] The gantry is the installation foundation of the vertical loading actuator. The vertical pressing beam needs to press on an axle box of the force measuring wheel set. The cross beam of the gantry can move up and down along the gantry column and be fixed after moving. In this way, the height of the vertical pressing beam in the vertical direction can also be adjusted, so that the vertical pressing beam can be pressed onto an axle of the force measuring wheel set. The vertical loading actuator can move along the cross beam of the gantry and be fixed after moving. In this way, the vertical pressing beam can adjust its position along the length direction of the cross beam of the gantry, that is, the longitudinal direction. When the vertical pressing beam is in contact with an axle box of the force measuring wheel set, the vertical loading actuator is used to apply a vertical load to the vertical pressing beam, so that the vertical pressing beam applies a vertical load to an axle box of the force measuring wheel set.

[0113] Specifically, the gantry is a gantry made of Q345 material.

[0114] During implementation, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the longitudinal force measuring device further includes:

[0115] Two lateral limiting devices 251, installed on the outer side of the gantry 241;

[0116] Two vertical guiding devices, including a vertical guiding rail 252 and a vertical sliding block 253. The vertical guiding rail 252 is fixed on the vertical side of the lateral limiting device facing the force measuring wheel set and the guiding direction is the vertical direction. The vertical sliding block 253 is matched with the vertical guiding rail 252 and the vertical sliding block can slide along the vertical guiding rail 252;

[0117] Two vertical guiding transition members 254, one vertical guiding transition member 254 is fixed at each end of the vertical pressing beam 243, and the two vertical guiding transition members 254 are respectively fixed to the two vertical sliding blocks 253;

[0118] Among them, the vertical guiding rail, the vertical sliding block and the vertical guiding transition member cooperate to guide the vertical movement of the vertical pressing beam.

[0119] A longitudinal force measuring device has two lateral limiting devices, and the two longitudinal force measuring devices have a total of four lateral limiting devices. When the force measuring wheel set is supported on the vertical supporting rollers or the vertical supporting track, the two vertical pressing beams are respectively pressed on the two axle boxes of the force measuring wheel set. Both ends of each vertical pressing beam are fixed to the two vertical sliders through vertical guiding transition pieces. In this way, in the lateral direction, the lateral limiting of both sides of the force measuring wheel set is realized, so that the force measuring wheel set will not move in the lateral direction. The vertical guiding rail, the vertical slider and the vertical guiding transition piece cooperate to guide the vertical pressing beam when a vertical load is applied in the vertical direction, and the direction will not deviate.

[0120] In implementation, the centers of gravity of the vertical supporting rollers, the supporting roller mounting frames, the three-component force sensors at the bottom of the rollers and the lateral sliding tables are on the same straight line; in this way, the vertical load received by the wheels of the force measuring wheel set acts on the three-component force sensors at the bottom of the rollers and the lateral sliding tables through the vertical supporting rollers and the supporting roller mounting frames, and the vertical load will not deviate or deviate less. The vertical supporting rollers, the supporting roller mounting frames and the lateral sliding tables are less worn.

[0121] The centers of gravity of the vertical supporting track, the track mounting frame and the three-component force sensor at the bottom of the track are on the same straight line; in this way, the vertical load received by the wheels of the force measuring wheel set acts on the three-component force sensor at the bottom of the track through the vertical supporting track and the track mounting frame, and the vertical load will not deviate or deviate less. The vertical supporting track and the track mounting frame are less worn.

[0122] The upper rail surface of the vertical supporting track is flush with the upper wheel surface of the vertical supporting rollers, and the vertical supporting track and the vertical supporting rollers are arranged adjacent to each other in the longitudinal direction, and the longitudinal direction is consistent with the length direction of the vertical supporting track;

[0123] Each of the longitudinal force measuring devices further includes two fixing devices, the fixing devices are used to fix the vertical pressing beam and the axle box of the force measuring wheel set when they are in contact, and the vertical loading actuator is further used to lift the fixed force measuring wheel set and the pressing beam upward.

[0124] In this way, between the vertical pressing beam and the axle box of the force measuring wheel set, the fixing device fixes the vertical pressing beam and the force measuring wheel set together; when it is necessary to switch the position of the force measuring wheel set between the vertical supporting track and the vertical supporting rollers, the vertical loading actuator can lift the fixed force measuring wheel set and the pressing beam upward to leave the vertical supporting track or the vertical supporting rollers, and by adjusting the position of the vertical loading actuator at the gantry beam, the switching of the position in the longitudinal direction is realized, and the fixed force measuring wheel set and the pressing beam are dropped onto the vertical supporting rollers or the vertical supporting track, so as to realize the switching between static force measurement calibration and dynamic force measurement calibration.

[0125] During implementation, such as Figure 6 shown, the vertical guide rail 252 includes:

[0126] Two bar-shaped rails 252-1 arranged at intervals;

[0127] A bar-shaped block 252-2 with a guide groove, and the bar-shaped block 252-2 is centrally arranged between the two bar-shaped rails 252-1;

[0128] The vertical slider 253 includes:

[0129] Two clamping grooves 253-1 that cooperate with the bar-shaped rails, and the clamping grooves and the bar-shaped rails are clamped and matched;

[0130] A clamping block that cooperates with the guide groove, and the clamping block and the guide groove are clamped and matched.

[0131] During implementation, the longitudinal force measuring system includes two of the longitudinal force measuring devices, and the vertical support rollers of the two longitudinal force measuring devices are respectively used to support the two wheels of the force measuring wheel set.

[0132] In this way, each group of vertical guide rails and vertical sliders has three guiding structures, so that the vertical load on the vertical pressing crossbeam can act on the axle box of the force measuring wheel set without deviation or with less deviation.

[0133] Specifically, the vertical force measuring system includes two vertical force measuring devices, and the vertical force measuring device includes the vertical support assembly and the three-component force sensor, that is, a part of the longitudinal force measuring device is reused as the vertical force measuring device.

[0134] Regarding the lateral force measuring system.

[0135] Such as Figure 9 , Figure 10 and Figure 11 shown, the lateral force measuring system includes:

[0136] A lateral support seat 310;

[0137] A lateral connecting member 320, which is slidably connected to the lateral support seat 310, and the lateral connecting member 320 can slide along the lateral direction on the lateral support seat 310;

[0138] A load sensor 330, which is fixed on the outside of the lateral connecting member 320;

[0139] A loading roller mounting bracket 340, which is fixed on the outside of the load sensor 330;

[0140] A lateral loading roller 350, which is laterally installed at the loading roller mounting bracket 340, and the lateral loading roller 350 can rotate laterally;

[0141] Wherein:

[0142] The transverse connecting member is used to slide in the transverse direction to abut the transverse loading roller against the inner side of the wheel of the test wheel set;

[0143] The load sensor is used to obtain the reaction force in the transverse direction when the wheel of the force-measuring wheel set rotates above the vertical support roller at a preset speed and the transverse loading roller applies a preset transverse load to the inner side of the wheel of the force-measuring wheel set;

[0144] The load sensor is also used to obtain the reaction force in the transverse direction when the wheel of the force-measuring wheel set is statically supported by the vertical support track and the transverse loading roller applies a preset transverse load to the inner side of the wheel of the force-measuring wheel set.

[0145] The two wheels of the force-measuring wheel set are placed above the vertical support rollers of the two longitudinal force-measuring devices. The vertical support rollers play a supporting role for the wheels of the force-measuring wheel set.

[0146] A preset vertical load is applied to the wheels of the force-measuring wheel set, and at the same time, the wheels rotate at a preset speed. At this time, not only can the longitudinal force-measuring system be used for dynamic force measurement calibration of the force-measuring wheel set in the vertical direction, but also the transverse connecting member drives the transverse loading roller to move in the transverse direction to abut against the inner side of the wheel of the test wheel set. The transverse loading roller applies a preset transverse load to the inner side of the wheel of the force-measuring wheel set, and the load sensor obtains the reaction force in the transverse direction and outputs it. In this way, the dynamic force measurement calibration of the force-measuring wheel set in the transverse direction and the vertical direction is realized.

[0147] When no preset vertical load is applied to the wheels of the force-measuring wheel set and the wheels rotate at a preset speed, the transverse loading roller applies a preset transverse load to the inner side of the wheel of the force-measuring wheel set, and the load sensor obtains the reaction force in the transverse direction and outputs it. In this way, the dynamic force measurement calibration of the force-measuring wheel set in the transverse direction is realized.

[0148] Specifically, the setting method of the transverse loading roller enables the transverse loading roller to rotate in the transverse direction and cooperate with the inner side of the rotating wheel of the force-measuring wheel set.

[0149] Specifically, the loading roller mounting frame has a vertically fixed central axis of the loading roller mounting frame. The central through hole of the transverse loading roller passes through the central axis of the loading roller mounting frame, and the transverse rotation is that the transverse loading roller rotates around the central axis of the loading roller mounting frame.

[0150] In implementation, the load sensor is also used to obtain the reaction force in the transverse direction when the wheel of the force-measuring wheel set is stationary, that is, the wheel does not rotate and the transverse loading roller applies a preset transverse load to the inner side of the wheel of the force-measuring wheel set.

[0151] The two wheels of the force-measuring axle set are placed above the vertical support rails of the two longitudinal force-measuring devices.

[0152] The vertical support rails support the wheels of the force-measuring axle set. At this time, not only can the longitudinal force-measuring system perform static force-measuring calibration on the force-measuring axle set in the vertical direction, but also the transverse connecting member drives the transverse loading roller to move in the transverse direction to abut against the inner side of the wheel of the test axle set. The transverse loading roller applies a preset transverse load to the inner side of the wheel of the force-measuring axle set, and the load sensor acquires the reaction force in the transverse direction and outputs it. In this way, static force-measuring calibration of the force-measuring axle set in the transverse direction and the vertical direction is achieved.

[0153] When no preset vertical load is applied to the wheels of the force-measuring axle set, the transverse loading roller applies a preset transverse load to the inner side of the wheel of the force-measuring axle set, and the load sensor acquires the reaction force in the transverse direction and outputs it. In this way, static force-measuring calibration of the force-measuring axle set in the transverse direction is achieved.

[0154] In this way, the transverse force-measuring system can achieve dynamic force-measuring calibration and static force-measuring calibration in the transverse direction; the transverse force-measuring system and the longitudinal force-measuring system cooperate to achieve static force-measuring calibration and dynamic force-measuring calibration in the transverse direction and the vertical direction.

[0155] As Figure 9 , Figure 10 and Figure 11 shown, the transverse force-measuring system further includes:

[0156] The transverse loading actuator 360 is horizontally fixed on the transverse support seat 310. The transverse connecting member 320 is fixed to one end of the transverse loading actuator 360, and the transverse loading actuator 360 and the load sensor 330 are arranged back to back;

[0157] The transverse loading roller 350 is higher than the upper end of the transverse loading actuator 360;

[0158] Among them, the transverse loading actuator 360 can extend and contract and is used to apply a transverse load to the transverse connecting member, so that the transverse loading roller 350 applies a preset transverse load to the inner side of a wheel of the force-measuring axle set.

[0159] The connection mode of the transverse loading actuator, the transverse connecting member, the load sensor, the loading roller mounting bracket and the transverse loading roller enables the transverse loading roller to move in the transverse direction on the one hand to adapt to the situation that the gauge, that is, the distance between the two wheels of various force-measuring axle sets, is various, and on the other hand, the application of the transverse load is also achieved.

[0160] A component with a lateral connecting piece is introduced to make the lateral loading roller higher than the upper end of the lateral loading actuator, thus avoiding the possibility of interference of the lateral loading actuator with other structures of the force measuring wheel set, such as the axle box.

[0161] During implementation, as Figure 9 , Figure 10 and Figure 11 shown, the lateral force measuring system further includes a lateral guiding device, and the lateral guiding device includes:

[0162] A lateral loading guide rail 371, fixed on the lateral support seat 310 and located below the lateral connecting piece 320, and the guiding direction of the lateral loading guide rail 371 is the lateral direction;

[0163] A lateral slider 372, fixed on the outer bottom of the lateral connecting piece 320 and engaged with the lateral loading guide rail 371;

[0164] Wherein, the lateral loading guide rail and the lateral slider cooperate to guide the elongation and contraction of the lateral connecting piece in the lateral direction.

[0165] The lateral loading guide rail and the lateral slider cooperate to enable the laterally connected pieces, the loading roller mounting bracket and the lateral loading roller fixed together to move in the lateral direction, and when a preset lateral load is applied through the lateral loading roller, it is guided and there will be no deviation in direction.

[0166] During implementation, as Figure 9 , Figure 10 and Figure 11 shown, the lateral connecting piece 320 includes:

[0167] An L-shaped lateral connecting piece body 321, the outer side of the vertical arm of the lateral connecting piece body 321 is fixed to the lateral loading actuator 360, the load sensor 330 is fixed to the inner side of the vertical arm of the lateral connecting piece body 321, and the lateral slider 372 is fixed to the outer side of the lateral arm of the lateral connecting piece body 321;

[0168] A lateral connecting piece support rib 322, both ends of the lateral connecting piece support rib 322 are fixed to the inner side of the lateral arm of the lateral connecting piece body 321 and the outer bottom of the loading roller mounting bracket 340; wherein, the lateral connecting piece support rib 322 supports the loading roller mounting bracket 340;

[0169] There are two horizontally connecting member reinforcing ribs 323 arranged in parallel, and both ends of the horizontally connecting member reinforcing rib 323 are respectively fixed to the inner sides of the vertical arm and the horizontal arm of the horizontally connecting member main body 321; wherein, the horizontally connecting member support rib 322 and the loading roller mounting bracket 340 are located between the two horizontally connecting member reinforcing ribs 323.

[0170] The L-shaped horizontally connecting member main body has a simple structure and can provide installation spaces for the horizontal loading actuator, the load sensor, the horizontal slider and the horizontally connecting member support rib at the same time. The L-shaped horizontally connecting member main body, the loading roller mounting bracket and the horizontally connecting member support rib roughly form a frame shape, making the structure stable. The horizontally connecting member reinforcing rib further strengthens the frame shape, making the structure of the entire horizontally connecting member more stable.

[0171] During implementation, there are two of each of the horizontally connecting member, the load sensor, the loading roller mounting bracket and the horizontal loading roller, and the horizontal guiding device, which are symmetrically arranged on the horizontal support base.

[0172] In this way, the horizontal force measuring system is a symmetric structure, and the two horizontal loading rollers can extend and contract in opposite directions and abut against the inner sides of the two wheels of the force measuring wheel set, while performing force measurement calibration.

[0173] The main technical indicators of the force measuring wheel set calibration test bench in the embodiment of the present application are as follows:

[0174] The force measuring wheel set calibration test bench can be used for the calibration requirements of the force measuring wheel set of 27t heavy axle load vehicles:

[0175] The maximum loading capacity of the vertical loading actuator is set to 300 kN;

[0176] The maximum loading capacity of the horizontal loading actuator is set to 150 kN;

[0177] The maximum loading capacity of the longitudinal loading lead screw is set to 50 kN.

[0178] Specifically, the test bench base platform is a test bench base platform made of rigid material;

[0179] The horizontal support base is a horizontal support base made of rigid material;

[0180] The horizontally connecting member is a horizontally connecting member made of rigid material;

[0181] The loading roller mounting bracket is a loading roller mounting bracket made of rigid material;

[0182] The horizontal loading guide rail is a horizontal loading guide rail made of rigid material;

[0183] The horizontal slider is a horizontal slider made of rigid material;

[0184] The support roller mounting bracket is a support roller mounting bracket made of rigid material;

[0185] The longitudinal sliding table is a longitudinal sliding table made of rigid material;

[0186] The longitudinal mounting platform is a longitudinal mounting platform made of rigid material;

[0187] The transverse sliding table is a transverse sliding table made of rigid material;

[0188] The vertical support rail is a vertical support rail made of rigid material;

[0189] The rail mounting bracket is a rail mounting bracket made of rigid material;

[0190] The gantry is a gantry made of rigid material;

[0191] The transverse limiting device is a transverse limiting device made of rigid material;

[0192] The vertical guiding device is a vertical guiding device made of rigid material.

[0193] Specifically, the vertical force measuring system, the horizontal force measuring system and the longitudinal force measuring system are all detachably mounted on the test bench base platform. Since the vertical force measuring system, the horizontal force measuring system and the longitudinal force measuring system are all detachably mounted, they can be conveniently disassembled, so as to facilitate the loading and unloading operations of the force measuring wheel set.

[0194] Specifically, the distance between the two vertical support rails and the distance between the two vertical support rollers determine the force measuring wheel set that can be applicable to multiple track gauges. By adjusting the distance between the two longitudinal mounting platforms, the force measuring calibration of the force measuring wheel set with multiple track gauges can be realized. Force measuring wheels with multiple track gauges, such as meter gauge (1000mm), standard gauge (1435mm) to broad gauge (1676mm).

[0195] Specifically, the crossbeam of the gantry can move up and down along the gantry columns and be fixed after moving. In this way, the height of the vertical pressing crossbeam in the vertical direction can also be adjusted. In this way, the distance between the vertical support rail and the vertical pressing crossbeam, and the distance between the vertical support roller and the vertical pressing crossbeam can be adjusted, so that the longitudinal force measuring system can perform the force measuring calibration on the force measuring wheel set with a certain wheel diameter. The distance between the vertical support rail and the vertical pressing crossbeam is greater than or equal to 800mm and less than or equal to 1200mm, and the distance between the vertical support roller and the vertical pressing crossbeam is greater than or equal to 800mm and less than or equal to 1200mm.

[0196] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationships indicated by terms such as "top", "bottom", "height", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application 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. Therefore, it should not be construed as a limitation to the present application.

[0197] In the present application and its embodiments, unless otherwise clearly defined and limited, terms such as "arrange", "install", "connect", "link", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0198] In the present application and its embodiments, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0199] The above disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and arrangements of specific examples are described above. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0200] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0201] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

1. A calibration test bench for a force-measuring wheel set, characterized in that, it includes a test bench base platform and a longitudinal force-measuring system, and the longitudinal force-measuring system is installed on the test bench base platform; the longitudinal force-measuring system includes a longitudinal force-measuring device, and the longitudinal force-measuring device includes: a longitudinal installation platform; a longitudinal slide, the longitudinal slide is slidably connected to the longitudinal installation platform and the longitudinal slide can slide along the longitudinal direction on the longitudinal installation platform; a vertical support assembly, installed on the longitudinal slide, for supporting the wheels of the force-measuring wheel set; a three-component force sensor, fixed to the vertical support assembly; wherein, the three-component force sensor is used to obtain the reaction forces in three directions when the wheels of the force-measuring wheel set bear a preset vertical load and the longitudinal slide bears a preset longitudinal load; the longitudinal installation platform has a longitudinal guide groove, and the guiding direction of the longitudinal guide groove is the same as the longitudinal direction; the bottom of the longitudinal slide has a longitudinal slide lower slider, the longitudinal slide lower slider is placed in the longitudinal guide groove and the longitudinal slide lower slider can slide along the guiding direction of the longitudinal guide groove; wherein, the width of the notch of the longitudinal guide groove is smaller than the width of the bottom of the longitudinal guide groove, and the cross-sectional shape of the longitudinal slide lower slider is the same as the cross-sectional shape of the longitudinal guide groove; the longitudinal slide has a longitudinal slide threaded hole along the longitudinal direction; the longitudinal force-measuring device further includes: a longitudinal loading lead screw, fixed to the bottom of the longitudinal guide groove, and the threaded rod of the longitudinal loading lead screw is in threaded cooperation with the longitudinal slide threaded hole; wherein, the longitudinal loading lead screw is used to apply a longitudinal load to the longitudinal slide; the longitudinal force-measuring system includes two of the longitudinal force-measuring devices, and the two vertical support assemblies are respectively used to support the two wheels of the force-measuring wheel set; the vertical support assembly includes: a vertical support roller, for supporting the wheels of the force-measuring wheel set; a support roller mounting bracket, the vertical support roller is vertically installed at the support roller mounting bracket and the vertical support roller can rotate vertically; the three-component force sensor includes a three-component force sensor at the bottom of the roller, fixed under the support roller mounting bracket; the longitudinal slide is fixed below the three-component force sensor at the bottom of the roller; wherein, the three-component force sensor at the bottom of the roller is used to obtain the reaction forces in three directions when the wheels of the force-measuring wheel set bear a preset vertical load and rotate at a preset speed, driving the vertical support roller to rotate; the three-component force sensor at the bottom of the roller is also used to obtain the reaction forces in three directions when the wheels of the force-measuring wheel set bear a preset vertical load and rotate at a preset speed to drive the vertical support roller to rotate, and the longitudinal slide bears a preset longitudinal load; wherein, the test bench base platform is a test bench base platform made of rigid material, and the longitudinal slide is a longitudinal slide made of rigid material.

2. The calibration test bench for a force-measuring wheel set according to claim 1, characterized in that, the longitudinal force-measuring device further includes: a transverse slide, slidably connected to the longitudinal slide and the transverse slide can slide along the transverse direction on the longitudinal slide; Among them, the three-component force sensor at the bottom of the roller is fixed on the transverse slide, and the transverse direction is consistent with the thickness direction of the vertical support roller.

3. The calibration test bench for the force measuring wheel pair according to claim 2, characterized in that the longitudinal slide has a transverse guiding groove, and the guiding direction of the transverse guiding groove is consistent with the transverse direction; the bottom of the transverse slide has a transverse slide lower block, the transverse slide lower block is placed in the transverse guiding groove and the transverse slide lower block can slide along the guiding direction of the transverse guiding groove; Among them, the width of the notch of the transverse guiding groove is smaller than the width of the bottom of the transverse guiding groove, and the cross-sectional shape of the transverse slide lower block is consistent with the cross-sectional shape of the transverse guiding groove.

4. The calibration test bench for the force measuring wheel pair according to claim 3, characterized in that the transverse slide has a transverse slide threaded hole along the transverse direction; The longitudinal force measuring device further includes: a transverse moving lead screw, fixed at the bottom of the transverse guiding groove, and the threaded rod of the transverse moving lead screw is in threaded cooperation with the transverse slide threaded hole; Among them, the transverse moving lead screw is used to drive the transverse slide to move relative to the longitudinal slide along the transverse direction, so that the contact position between the vertical support roller and the wheel of the force measuring wheel pair can move in the transverse direction.

5. The calibration test bench for the force measuring wheel pair according to claim 1, characterized in that The vertical support assembly further includes: a vertical support rail and a rail mounting bracket, the vertical support rail is fixed on the rail mounting bracket; The three-component force sensor further includes a three-component force sensor at the bottom of the rail, fixed below the rail mounting bracket and above the longitudinal slide; Among them, the three-component force sensor at the bottom of the rail is used to obtain the reaction forces in three directions when the wheel of the force measuring wheel pair bears a preset vertical load and the vertical support rail statically supports the wheel of the force measuring wheel pair; The three-component force sensor at the bottom of the rail is also used to obtain the reaction forces in three directions when the wheel of the force measuring wheel pair bears a preset vertical load and is statically supported by the vertical support rail, and the longitudinal slide bears a preset longitudinal load.

6. The calibration test bench for the force measuring wheel pair according to claim 5, characterized in that The longitudinal force measuring device further includes: a gantry, one gantry corresponds to one vertical support roller, the gantry includes two gantry columns and a gantry cross beam, the gantry cross beam is fixedly installed between the two gantry columns, and the gantry cross beam can move up and down along the gantry columns and be fixed after moving; a vertical loading actuator, the vertical loading actuator is hoisted under the gantry cross beam, and the vertical loading actuator can move along the gantry cross beam and be fixed after moving; a vertical pressing cross beam, installed at the lower end of the vertical loading actuator, the vertical pressing cross beam is used to press on one axle box of the force measuring wheel pair; Among them, the vertical loading actuator is used to apply a vertical load to one axle box of the force measuring wheel pair through the vertical pressing cross beam, so that the wheel of the force measuring wheel pair bears a preset vertical load.

7. The calibration test bench for the force-measuring wheel set according to claim 6, characterized in that, the longitudinal force-measuring device further includes: two lateral limiting devices, installed on the outer sides of the gantry; two vertical guiding devices, including vertical guiding rails and vertical sliders. The vertical guiding rails are fixed on the vertical side faces of the lateral limiting devices facing the force-measuring wheel set and the guiding direction is the vertical direction. The vertical sliders are matched with the vertical guiding rails and the vertical sliders can slide along the vertical guiding rails; two vertical guiding transition members, one of the two vertical guiding transition members is fixed at each end of the vertical pressing cross beam. The two vertical guiding transition members are respectively fixed to the two vertical sliders; wherein, the vertical guiding rails, the vertical sliders and the vertical guiding transition members cooperate to guide the vertical movement of the vertical pressing cross beam.

8. The calibration test bench for the force-measuring wheel set according to claim 7, characterized in that, the centers of gravity of the vertical supporting rollers, the supporting roller mounting frames, the three-component force sensors at the bottoms of the rollers and the lateral sliding table are located on the same straight line; the centers of gravity of the vertical supporting rails, the rail mounting frames and the three-component force sensors at the bottoms of the rails are located on the same straight line; the upper rail surfaces of the vertical supporting rails are flush with the upper wheel surfaces of the vertical supporting rollers. The vertical supporting rails and the vertical supporting rollers are arranged adjacent to each other in the longitudinal direction, and the longitudinal direction is the same as the length direction of the vertical supporting rails; the longitudinal force-measuring device further includes two fixing devices. The fixing devices are used to fix the vertical pressing cross beam and the axle box of the force-measuring wheel set when they are in contact, and the vertical loading actuator is further used to lift and lower the fixed force-measuring wheel set and the pressing cross beam upward and downward.

9. The calibration test bench for the force-measuring wheel set according to claim 7, characterized in that, it further includes a lateral force-measuring system, and the lateral force-measuring system includes: a lateral supporting seat; a lateral connecting member, slidably connected above the lateral supporting seat, and the lateral connecting member can slide along the lateral direction above the lateral supporting seat; a load sensor, fixed on the outer side of the lateral connecting member; a loading roller mounting frame, fixed on the outer side of the load sensor; a lateral loading roller, laterally installed at the loading roller mounting frame, and the lateral loading roller can rotate laterally; wherein: the lateral connecting member is used to slide in the lateral direction to abut the lateral loading roller against the inner side of the wheel of the test wheel set; the load sensor is used to obtain the reaction force in the lateral direction when the wheel of the force-measuring wheel set rotates above the vertical supporting rollers at a preset speed and the lateral loading roller applies a preset lateral load to the inner side of the wheel of the force-measuring wheel set.

10. The calibration test bench for the force-measuring wheel set according to claim 9, characterized in that, the load sensor is further used to obtain the reaction force in the lateral direction when the wheel of the force-measuring wheel set is statically supported by the vertical supporting rails and the lateral loading roller applies a preset lateral load to the inner side of the wheel of the force-measuring wheel set.

11. The calibration test bench for the force-measuring wheel set according to claim 10, characterized in that, the lateral force-measuring system further includes: The lateral loading actuator is horizontally fixed on the lateral support seat. The lateral connecting member is fixed at one end of the lateral loading actuator, and the lateral loading actuator and the load sensor are arranged in opposite directions. The lateral loading roller is higher than the upper end of the lateral loading actuator. Wherein, the lateral loading actuator can extend and contract, and is used to apply a lateral load to the lateral connecting member, so that the lateral loading roller applies a lateral load to the inner side of one wheel of the force measuring wheel set. The lateral guiding device, the lateral guiding device includes: The lateral loading guide rail is fixed on the lateral support seat and is located below the lateral connecting member. The guiding direction of the lateral loading guide rail is the lateral direction. The lateral slider is fixed on the outer bottom of the lateral connecting member and is clamped and matched with the lateral loading guide rail. Wherein, the lateral loading guide rail and the lateral slider cooperate to guide the extension and contraction of the lateral connecting member in the lateral direction.

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