Summary of the invention
The purpose of this utility model: aim to provide a kind of locomotive curve bend simulator stand with multiple function, wish that it not only can satisfy different gauges, different smallest curve radius can also adapt to working conditions such as different Ultrahigh Bypass simultaneously.
This curve bend analog synthesis testing table is characterized in that: this simulator stand be by six independently moving cell A rearrange, described each separate unit A is made of four mechanical combined platforms; Promptly topmost be to finish the plane rotatable platform P that locomotive surface level inner curve rotates simulation
1, the second layer vertically balances platform P for inclining of rotating of axle for realizing along locomotive
2, the 3rd layer for driving incline screw mandrel---the mobile platform P of nut transmission mechanism of pendulum of two-layer platform
3, the 4th layer for driving the laterally mobile immobilizing foundation platform P that also finishes bogie curve bend simulation test simultaneously of above three layers of Platform Implementation
4
Described plane rotatable platform P
1The central rotating shaft place one angular displacement sensor 5 is installed, and incline through the base of center rotating shaft and two layers and to balance platform P
2Centralized positioning axle 6 is connected, in addition, and at a described layer plane rotatable platform P
1With two layers incline and balance platform P
2Between two layers incline to balancing and be symmetrical arranged two groups of taper roller supporting components 3 that help two-layer realization up and down to slide relatively above the platform, simultaneously again at a layer plane rotatable platform P
1A side turbine one worm gearing 10 of being united driving by servomotor 13, planet-gear speed reducer 12 is being set; This turbine one worm gearing 10 is fixed on the two-layer platform, but its transmission worm screw then be located at one deck rotatable platform P
1The turbine of limit portion is formed driving one layer plane rotatable platform P
1Produce the actuating unit of angular displacement; Described two layers are inclined and balance platform P
2Its bottom is circular arc, and this circular arc outer bottom of balancing platform of inclining is located in is located at the 3rd layer of mobile platform P
3Four spacing Rollers supports 14 on; Described the 3rd layer of mobile platform P
3, its platform one side is provided with the power speed changing drive unit of being made up of servomotor 13 and planet-gear speed reducer 12, and it stretches in the platform chamber is a screw mandrel one nut transmission mechanism 9 that an end has universal coupling 18; Transmission nut on its screw mandrel then inclines through web member and two layers and balances platform P
2Circular arc-shaped bottom portion connects, and forms and orders about the driving mechanism that the two-layer platform realization is inclined and put; And described swing nut body 15, then by being located at three layers of mobile platform P
3Nut mounting bracket 20 in the inner chamber and the nut 21 of going here and there in this nut mounting bracket 20 constitute, and are placing screw mandrel 22 at the center of this nut; Described immobilizing foundation platform P
4A side also be provided with the power speed changing drive unit of forming by servomotor 13 and planet-gear speed reducer 12, it stretches in the platform chamber is a screw mandrel one nut transmission mechanism 11 that an end has universal coupling 18; Its transmission nut that is positioned at platform chamber central part is connected with the upper platform bottom through transmission connection piece, forms the top three layers of platform of drive thus and realizes laterally mobile transversal displacement mechanism together.
Each plane rotatable platform P at described self-movement unit A
1On be equipped with four load sensors 2 affixed with upper track 1.
Described plane rotatable platform P
1Being provided with can be for the T-slot 19 of freely adjusting track 1 spacing.
This curve bend analog synthesis testing table according to above technical scheme design, its advantage is that test function is more complete, both can be used for detection to locomotive, vehicle bend handling capacity, and can be suitable for different gauge locomotives, vehicle detection, can also carry out simultaneously that the locomotive car load is weighed and lower-speed state wheel track power (derailing coefficient) measurement down.
Description of drawings
Accompanying drawing 1 is the whole vertical view of curve bend analog synthesis testing table;
Accompanying drawing 2 is for forming the cell cube structural representation of testing table;
Accompanying drawing 3 is the plan view of Fig. 2;
Accompanying drawing 4 is the side view of Fig. 2;
Accompanying drawing 5 swing nut body partial structurtes synoptic diagram.
Among the figure: 1-track 2-load sensor, 3-taper roller supporting component, 4-plane rotatable platform P
1, 5-angular displacement sensor, 6-locating shaft, 7-incline and balance platform P
2, 8-mobile platform P
3, 9-screw mandrel-nut transmission mechanism, 10-turbine-worm gearing, 11-screw mandrel-nut transmission mechanism, 12-planet-gear speed reducer, 13-servomotor, the spacing Rollers supports of 14-, 15-swing nut body, 16-immobilizing foundation platform P
4, 17-straight line roller bearing, 18-universal coupling, 19-T shape guide groove, 20-nut mounting bracket, 21-nut, 22-screw mandrel.
Embodiment
This as shown in drawings curve bend analog synthesis testing table, it is by six identical in structure self-movement unit A, can rearrange (accompanying drawing 1 is 2CD shaft type locomotive spread pattern) according to the shaft type of different locomotives, vehicle, its each self-movement unit A is by top-down plane rotatable platform P
1, incline and balance platform P
2, mobile platform P
3With immobilizing foundation platform P
4Form.
Wherein said plane rotatable platform P
1Last plane on be provided with load sensor 2 and be connected, and by the track 1 of sensor base bolted in last plane T-slot 19; Simultaneously, at this rotatable platform P
1The central rotating shaft place one angular displacement sensor 5 is installed; In addition at plane rotatable platform P
1A side turbine-worm gearing 10 of being united driving by servomotor 13, planet-gear speed reducer 12 is being set; Worm screw two ends in this turbine-worm gearing 10 are fixed on the two-layer platform by axle, but its transmission worm screw portion then be located at a layer plane rotatable platform P
1Driving one layer plane rotatable platform P is formed in the turbine engagement of corresponding edge portion thus
1Produce the actuating unit of angular displacement.
Described two layers are inclined and balance platform P
2, its bottom is circular arc, and its upper flat table top is provided with two groups of left-right symmetric, helps two-layer platform P up and down
1And P
2Realize taper roller supporting component 3 in relative rotation, simultaneously, incline at this again and balance the platform circular arc-shaped bottom portion and be provided with and be located in the 3rd layer of mobile platform P
3On four spacing roller supporting components 14.
Described the 3rd layer of translate stage P
3Except last plane is provided with four spacing roller supporting components 14, its platform one side is provided with the power speed changing drive unit of being made up of servomotor 13 and planet-gear speed reducer 12, it stretches in the platform chamber is the screw mandrel-nut transmission mechanism 9 that universal coupling 18 is equipped with in an end, and the transmission nut on its screw mandrel then inclines through web member and two layers and balances platform P
2Circular arc-shaped bottom portion connects, and forms to drive the swing nut body that the two-layer platform realization is inclined and put; Described swing nut body 15 is then by being located at three layers of mobile platform P
3Nut mounting bracket 20 in the inner chamber and the nut 21 of going here and there in this nut mounting bracket constitute, and are placing screw mandrel 22 at the center of this nut.
Described the 4th layer immobilizing foundation platform P
4, the plane is provided with two groups of compositions and top the 3rd layer of platform P on its platform
3Shared straight line roller bearing assembly 17, and at immobilizing foundation platform P
4A side also be provided with the power speed changing drive unit of forming by servomotor 13 and planet-gear speed reducer 12; It stretches in the platform chamber is the screw mandrel-nut transmission mechanism 11 that an end has universal coupling 18, and its hold-down nut that is positioned at the platform chamber is through web member and upper platform P
3The bottom connection is formed top three platforms of drive thus and is realized laterally mobile gear train together.
The test platform structure principle is introduced
This multi-function test stand has six independently moving cell A, and each unit can be finished the function that horizontally rotates, laterally moves and make locomotive incline and put respectively.Each unit comprises 4 layers of platform altogether, and topmost one deck is plane rotatable platform P
1, the surface level inner curve of finishing locomotive rotates simulation; The second layer be make locomotive incline the pendulum platform (abbreviation inclines and balances platform P
2), finish the circuit superelevation simulation of locomotive; The 3rd layer is the mount pad of the gear train of screw mandrel one nut, drives the mobile platform P that second layer platform inclines and puts
3, the 4th layer of platform P
4Finish top three platforms and laterally move, the horizontal of finishing in the test of curve bend of bogie moves.
When testing, at first wheelbase, the gauge according to tested locomotive, vehicle carries out the adjustment of testing table, and the adjustment of gauge relies on and moves the plane rotatable platform P of the superiors along T type guide groove 19 directions
1Above load sensor 2 realize, the adjustment of wheelbase rely on adjust each independently the distance between the moving cell finish.
After the multi-function test stand adjustment finished, locomotive, vehicle were by getting on the bus crane span structure or winch on the testing table with overhead traveling crane.And at two ends hitch stationkeeping locomotive or vehicle.
During test, control system is controlled each drive part of each moving cell A, by the order that weaves in advance rotate, incline pendulum, translation etc., simulates locomotive, right laterally the moving of curve, superelevation and the wheel of vehicle by the curve bend time respectively.(simulation locomotive since the first round to transit to the adjustment curve section by straight-line segment, the adjustment curve section is arranged to segment of curve again, simulates through the curve bend of the overall process of straight-line segment to a last wheel via the adjustment curve section at last) simultaneously can be in the process of motion by the vertical force and the transverse force of the force sensor measuring rail wheeling action below the track girder.Calculate the derailing coefficient that passes through bend under the certain speed.
Ground floor plane rotatable platform P
1Balance platform P with inclining of the second layer
2Between running part be one the cover turbine-worm gearing 10, wherein turbine is fixed on plane rotatable platform P
1The edge, worm screw is fixed on to incline by the diaxon bearing balances platform P
2On, roll support mechanism has been adopted in the support between two-layer, the frictional resistance when reducing transmission; Platform P is balanced in inclining of the second layer
2Adopt screw mandrel-nut transmission mechanism 9 to transmit the pendular motion that inclines (finishing the superelevation simulation), being installed in inclines balances platform P
2The nut of below can be balanced the rotation of platform along with inclining and be rotated, and makes it not influence the rotation (seeing accompanying drawing) of inclining and balancing platform.Incline and balance platform by the 3rd layer of mobile platform P
3On the frictional resistance of four spacing roller supporting components 14 when bearing the gravity of locomotive and reducing swing.The 3rd layer of platform can be along laterally moving, and the same gear train that laterally moves has adopted screw mandrel-a nut transmission mechanism 11 to come transmitting movement, the 3rd layer of mobile platform P
3With the 4th layer of basic platform P
4Between adopted straight line roller bearing 17 to support the 3rd layer mobile platform.Reliable in order to guarantee ensuring smooth transmission, the gear train of lower two layers has designed universal coupling 18 in the end of screw mandrel, so that rotate more convenient, flexible.
The drive part of three running parts has all adopted driven by servomotor, because actual torque is bigger, servomotor 13 ends have installed the planet-gear speed reducer 12 of big speed ratio additional, have reduced the output torque of servomotor effectively, have satisfied the lower requirement of system's output speed simultaneously.
In addition, below the track 1, load sensor 2 is installed above test platform, this sensor can be measured horizontal and vertical power value, can satisfy the functional requirement that the locomotive car load is weighed; Can carry out wheel load respectively, axle is heavy and complete vehicle weight measurement.Simultaneously, because force transducer can be measured transverse force, when each gear train of adjusting platform moves according to certain speed coordination, can measure the derailing coefficient of locomotive under a certain speed like this according to derailing coefficient=wheel-rail lateral force ÷ vertical force.
Corresponding transmission position on multi-function test stand is equipped with the displacement transducer of stay-supported, and the rotation axis place of last rotatable platform is equipped with angular displacement sensor 5; Measure the displacement of the platform under each gear train drive respectively, so that control system coordinates to control the transmission speed of each.
Processed laterally on the rotatable platform on upper strata that " T " can adjust the installation site of sensor along "T"-shaped groove direction like this, and then reach the purpose that gauge is adjusted by shape guide groove 19.Each platform of testing table is installed in above the "T"-shaped guide groove track that is embedded in long rectilinear orbit, and single platform moves along the "T"-shaped guide groove guide rail of straight line and reaches the purpose that wheelbase is adjusted.
The adjustment of wheelbase is placed on position suitable on the track ground and gets final product as long as single platform is sling.
This multi-function test stand needs to adjust testing table according to the wheelbase of tested locomotive, vehicle, gauge at the trial, the utilization crane span structure (perhaps adopting crane) of getting on the bus makes motor supply shop enter the relevant position of (on falling) testing table, utilize the fixedly two ends of car body of reaction frame then, locomotive car body is fixed.Then control system according to the bend situation of reality finish locomotive, vehicle carries out the transition to the adjustment curve section again to the bend section from straight-line segment, carries out the transition to the real simulation of the overall process of straight-line segment again via the adjustment curve section, the state that reflection locomotive bend passes through.
Regulate each transmission speed of each unit by control system simultaneously, can finish the proving test of locomotive bend handling capacity below different speed.Measure the derailing coefficient of locomotive under different speed class simultaneously.Be limited to test condition, this test speed is limited in below the 60km/h.
, after testing table falls the position, also be under initial level, the guide rail linear state at locomotive, can carry out axle weight, the wheel load of locomotive, the test of complete vehicle weight at testing table.The system layout of testing table as shown in Figure 1, the thin portion structure of single stage body is seen Fig. 2---Fig. 5.