CN210464955U

CN210464955U - Novel track-changing function and reliability test bed for track-changing distance bogie

Info

Publication number: CN210464955U
Application number: CN201921242366.4U
Authority: CN
Inventors: 刘玉梅; 胡婷; 庄娇娇; 熊伟; 马登辉; 乔宁国; 陈云; 刘鹏程; 陈希明; 王多洋; 徐观; 陈熔; 林慧英; 张立斌; 韩孟跞; 赵心纶
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-05
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a novel track-changing function and reliability test bed for a track-changing bogie, which mainly comprises a mobile platform power driving device, a translational track gauge changing device, a bearing walking rail, a limiting device and a gantry type suspension device; the power driving device of the mobile platform drives the translational track gauge changing device to longitudinally move through the motor-crank connecting rod kinematic pair, the translational track gauge changing device unlocks and locks the track gauge changing wheel pair, provides a transverse guiding effect for the axial track gauge changing motion of the wheel pair along the wheel shaft, provides a bearing and longitudinal guiding effect for the bearing running rail, the limiting device performs transverse centering positioning and vertical limiting on the motion direction, and the gantry type suspension device fixes the position of the wheel pair of the bogie and unloads the wheel pair. The utility model discloses a moving platform's reciprocating motion simulation becomes the circulation of gauge wheel pair and becomes the rail action, for research gauge bogie becomes rail function and reliability analysis provides the basis.

Description

Novel track-changing function and reliability test bed for track-changing distance bogie

Technical Field

The utility model relates to a rail vehicle dynamic simulation and test field, concretely relates to novel become rail gauge bogie and become rail function and reliability test platform.

Background

Due to political, economic, technical and historical reasons, different track gauge standards exist in railway transportation for a long time, with rapid development of global economy integration, trade transactions and cultural exchanges among countries are increasingly frequent, railway transportation gradually becomes one of the most main onshore trade channels of cross-country and cross-region intermodal transportation, and track gauge difference brings many limits for development of international intermodal transportation, so that the variable-track-gauge bogie capable of realizing direct operation among different sections with different track gauges is generated.

In order to enable the produced variable-track-pitch bogie to smoothly complete track change on an actual railway vehicle, whether the variable-track-pitch bogie can complete the track change function or not needs to be verified before the actual vehicle is assembled, and the reliability of a variable-track-pitch mechanism of the variable-track-pitch bogie under a circulating working condition needs to be detected, so that a variable-track-pitch function and reliability testing device of the variable-track-pitch bogie needs to be developed. In order to solve the problem that is difficult to carry out the rail transfer function and reliability test to the variable gauge bogie among the prior art, the utility model provides a novel variable gauge bogie rail transfer function and reliability test platform, by the track of the dull and stereotyped simulation relative movement who removes, the gauge can be adjusted as required and changed, can realize the unblock and the locking of variable gauge device simultaneously to unblock and locking and the variable rail action of can circulation simulation variable gauge wheel pair, provide the basis for the detection and the reliability analysis of variable gauge bogie gauge transform function.

Disclosure of Invention

For solving the problem, the utility model provides a novel become rail gauge bogie and become rail function and reliability test platform, adopt the dull and stereotyped simulation relative movement's that removes track, dull and stereotyped straight reciprocating motion is realized by crank link mechanism, and the gauge can change gauge B (or A) from gauge A (or B) as required, thereby can circulate the change rail action of simulation change rail gauge wheel pair, it can detect whether become the rail function can be realized to become rail bogie, and the reliability test that turns to the bogie change rail mechanism is carried out through endless change rail action, and the fatigue life test of gauge unblock locking mechanism etc..

In order to achieve the purpose, the novel track-changing function and reliability test bed for the track-changing bogie of the utility model mainly comprises a moving platform power driving device 1, a translation type track gauge changing device 2, a bearing walking rail 3, a limiting device 4 and a gantry type suspension device 5; the power driving device 1 of the moving platform is fixedly arranged on the ground, the translation type track gauge changing device 2 is driven to longitudinally move through a motor-crank connecting rod kinematic pair, and the translation type track gauge changing device 2 unlocks and locks a track gauge changing wheel set and provides a transverse guiding effect for the axial track gauge changing movement of the wheel set along a wheel shaft; the bearing walking rails 3 are symmetrically arranged below two sides of the translation type track gauge changing device 2 and provide bearing and longitudinal guiding functions for the translation type track gauge changing device; the limiting devices 4 are symmetrically arranged on two sides of the translation type track gauge converting device 2 and used for carrying out transverse centering positioning and vertical limiting on linear reciprocating motion of the translation type track gauge converting device; the gantry type suspension device 5 fixes the wheel pair position of the bogie and unloads the wheel pair.

The power driving device 1 for the mobile platform comprises: the device comprises a motor 1-1, a first coupler 1-2, a speed reducer 1-3, a second coupler 1-4, a transmission shaft 1-5, a first bearing 1-6, a first bearing seat 1-7, a second bearing 1-8, a second bearing seat 1-9, a turntable 1-10, a connecting rod shaft pin 1-11 and a connecting rod 1-12; the motor 1-1, the speed reducer 1-3, the first bearing seat 1-7 and the second bearing seat 1-9 are respectively fixed on the ground through foundation bolts; the output shaft of the motor 1-1 is connected with the input shaft of the speed reducer 1-3 through a first coupler 1-2, the output shaft of the speed reducer 1-3 is connected with a transmission shaft 1-5 through a second coupler 1-4, and the transmission shaft 1-5 is supported on a first bearing seat 1-7 and a second bearing seat 1-9 through a first bearing 1-6 and a second bearing 1-8 respectively; the transmission shaft 1-5 is connected with the rotary disc 1-10 through a key; the motor 1-1 is used for reducing the speed and increasing the torque of the power through the speed reducer 1-3 and then transmitting the power to the transmission shaft 1-5, so as to drive the rotary disc 1-10 to rotate; the rotary table 1-10 is fixedly connected with one end of a connecting rod shaft pin 1-11, the other end of the connecting rod shaft pin 1-11 is movably connected with a connecting rod 1-12, a rolling bearing is arranged in the middle of the rotary table to ensure that the connecting rod 1-12 rotates around the connecting rod shaft pin 1-11 relatively, the other end of the connecting rod 1-12 is hinged with the moving platform 2-1, the central axis of the rotary table 1-10 and the horizontal central plane of the moving platform 2-1 are in the same plane, and a crank-connecting rod mechanism is ensured to be in a centering mode, so that the moving platform 2-1 keeps constant; the crank connecting rod mechanism converts the rotary motion of the rotary table 1-10 into the linear translation motion of the movable platform 2-1, and the direction of the linear motion is ensured by the positioning and guiding action of the limiting device 4; the longitudinal installation position of the power driving device 1 of the moving platform ensures that the connecting rod does not interfere with the end part of the translation type track gauge changing device 2 when moving to the top dead center.

The translation type track gauge changing device 2 comprises a moving platform 2-1, a track gauge changing guide rail 2-2 and an unlocking and locking matching device 2-3; the moving platform 2-1 is formed by welding a hollow square tube and a rectangular tube to realize light weight, and the end part of the moving platform 2-1 is hinged with the connecting rod 1-12; the laying mode of the variable-gauge guide rail 2-2 on the moving platform 2-1 is divided into a gauge A guide section 2-4 and a gauge B guide section 2-5 according to different gauges, the two variable-gauge guide rails 2-2 are arranged in a splayed shape or a reversed splayed shape with reference to a central line, the gauge A and the gauge B can be adjusted according to the test requirement of the variable-gauge bogie, the variable-gauge guide rail 2-2 is fixed on the moving platform 2-1 through bolts, and the wheels on two sides are driven by the change of the gauges to simultaneously move inwards or outwards relative to wheel axles so as to realize the conversion of the wheel gauges; the unlocking and locking matching device 2-3 comprises a support frame 2-3-1, the device comprises unlocking locking rails 2-3-2 and connecting plates 2-3-3, wherein the unlocking locking rails 2-3-2 are welded on support frames 2-3-1, the mounting position of the unlocking locking rails can ensure that small rollers on a locking device of a track-variable wheel pair can run in the rails, along with the reciprocating motion of a mobile platform 2-1, a locking mechanism of the track-variable wheel pair completes unlocking and locking actions according to the stroke change of the unlocking locking rails 2-3-2, the support frames 2-3-1 in each row are welded into a whole through the connecting plates 2-3-3 to improve the bearing capacity, and the support frames 2-3-1 in each row are symmetrically welded on the two sides of the upper surface of the mobile platform 2-1 according to a specified distance.

The bearing walking rail 3 comprises a bearing roller 3-1 and a mounting seat 3-2, the bearing roller 3-1 is assembled on the side wall of the mounting seat 3-2, and a certain distance is reserved between the bearing roller 3-1 and the bottom of the mounting seat 3-2 to ensure that the bearing roller 3-1 rotates freely; when the device works, the bottom surface of the moving platform 2-1 is in contact with the surface of the bearing roller 3-1 to do reciprocating translational motion; the bearing walking rails 3 are symmetrically arranged below two sides of the moving platform 2-1, and the length of the bearing walking rails ensures that the moving platform 2-1 is always in contact with the surface of the bearing roller 3-1 in a reciprocating motion stroke.

The limiting device 4 comprises a transverse centering positioning rail 4-1, a vertical limiting device 4-2 and an auxiliary supporting upright post 4-3; the transverse centering positioning rail 4-1 comprises a roller 4-1-1 and a lateral support 4-1-2, and the lateral support 4-1-2 is fixed on the inner sides of a vertical column 5-1 and an auxiliary support vertical column 4-3 of the gantry type suspension device 5 by screws; the surface of a roller 4-1-1 of a transverse centering positioning rail 4-1 is contacted with the side surface of a moving platform 2-1, so that the transverse displacement of the moving platform 2-1 during longitudinal movement is limited and is not blocked, and the translation type track gauge changing device 2 always performs linear reciprocating motion along the direction of a central line in a centering way; the vertical limiting device 4-2 comprises a vertical limiting rail 4-2-1 and a supporting and connecting device 4-2-2, the vertical limiting rail 4-2-1 comprises a supporting roller 4-2-1-1 and a base 4-2-1-2, the base 4-2-1-2 and the supporting and connecting device 4-2-2 are welded together, and the supporting and connecting device 4-2-2 is fixed on the inner sides of a stand column 5-1 and an auxiliary supporting stand column 4-3 of the gantry type suspension device 5 through screws so as to realize the fixed support of the vertical limiting rail 4-2-1; the surface of the vertical limiting rail 4-2-1 is contacted with the upper surface of the moving platform 2-1, so that the vertical displacement of the moving platform 2-1 during longitudinal movement is limited without clamping stagnation, and the lower surface of the moving platform 2-1 is always contacted with the bearing roller 3-1 bearing the walking rail 3 to do linear reciprocating motion; the outer side wall of the base 4-2-1-2 of the vertical limiting rail 4-2-1 is provided with a groove of 1-2 mm, so that the relative position of the vertical limiting rail 4-2-1 and the horizontal centering positioning rail 4-1 is ensured; the four auxiliary supporting upright columns 4-3 are uniformly arranged along the outer side of the bearing walking rail 3, the inner side surfaces of the four auxiliary supporting upright columns and the inner side surface of the gantry upright column are positioned in the same plane, the transverse centering positioning rail 4-1 and the vertical limiting device 4-2 are symmetrically arranged at two sides of the moving platform 2-1, and the length of the transverse centering positioning rail 4-1 is consistent with that of the bearing walking rail 3; the outer side end face of the bearing roller 3-1 bearing the walking rail 3 and the outer side end face of the supporting roller 4-2-1-1 of the vertical limiting rail 4-2-1 are positioned in the same vertical plane, so that the horizontal linear motion of the moving platform 2-1 is ensured.

The gantry type suspension device 5 comprises an upright post 5-1, a supporting platform 5-2, a suspension beam 5-3, a lifting ring 5-4 and a T-shaped groove connecting plate 5-5; the gantry type suspension device 5 spans across the moving platform 2-1, and the transverse center line of the gantry type suspension device and the transverse center lines of the bearing walking rail 3 and the limiting device 4 are in the same plane; the lifting rings 5-4 are fixed on T-shaped groove connecting plates 5-5 through screws, the T-shaped groove connecting plates 5-5 are welded on suspension beams 5-3, the distance between the two lifting rings 5-4 is adjustable to meet the requirements of bogies with different structures, the size of central holes of the two lifting rings 5-4 is determined according to the change of the axle diameter of the variable-gauge wheel pair, and the central holes are mainly used for suspending and fixing the position of the variable-gauge wheel pair so that the wheel pair is suspended and unloaded to complete unlocking and locking and track gauge conversion.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model relates to a novel track-changing function and reliability test bed of a track-changing bogie, which adopts a moving flat plate to simulate a track moving relatively, the linear reciprocating motion of the platform is realized by a motor-crank connecting rod mechanism, and the linear motion of the mobile platform is strictly positioned and centered, the whole bearing capacity is strong, the motion resistance is small, the track gauge unlocking-locking mechanism and the track gauge changing mechanism of the track gauge changing bogie are driven to carry out track gauge unlocking and locking and track changing actions of the track gauge changing bogie in the motion process of the platform, the reciprocating motion of the platform realizes the cyclic unlocking, locking and track changing actions, the reliability test of track gauge change is carried out, and fatigue life tests of an unlocking-locking mechanism and a sliding mechanism of the variable-track-pitch bogie, and the like, so that the reliability and the safety are improved for smoothly finishing the track change of the actual variable-track-pitch railway vehicle.

Drawings

FIG. 1 is an axonometric view of a novel gauge-variable bogie gauge function and reliability test bed of the utility model;

FIG. 2 is a side view of a novel track-changing function and reliability test bed of the track-changing bogie of the present invention;

FIG. 3 is a schematic view of the power driving device of the mobile platform according to the present invention;

fig. 4 is an axonometric view of the translation type gauge changing device of the present invention;

FIG. 5 is a top view of a laying method of the variable-pitch guide rail of the present invention;

FIG. 6 is a detail view of the unlocking locking rail of the present invention;

FIG. 7 is an isometric view of a load-bearing running rail according to the present invention;

fig. 8 is a schematic view of the installation of the position limiter of the present invention;

FIG. 9 is an isometric view of the transverse centering alignment rail and the vertical stop device of the present invention;

figure 10 is an isometric view of a gantry suspension apparatus of the present invention;

fig. 11 is a partial enlarged view of the installation of the T-shaped groove and the hanging ring of the present invention;

1. the power driving device comprises a moving platform power driving device, 1-1 motor, 1-2 coupler I, 1-3 speed reducer, 1-4 coupler II, 1-5 transmission shaft, 1-6 bearing I, 1-7 bearing seat I, 1-8 bearing II, 1-9 bearing seat II, 1-10 turntable, 1-11 connecting rod shaft pin and 1-12 connecting rod; 2. the track gauge comprises a translation type track gauge conversion device, 2-1 parts of a moving flat plate, 2-2 parts of a track gauge conversion guide rail, 2-3 parts of an unlocking and locking matching device, 2-3-1 parts of a support frame, 2-3-2 parts of an unlocking and locking guide rail, 2-3-3 parts of a connecting plate, 2-4 parts of a track gauge A guide section and 2-5 parts of a track gauge B guide section; 3. 3-1, bearing rollers and 3-2, mounting seats; 4. the device comprises a limiting device, 4-1 transverse centering positioning rails, 4-1-1 rollers, 4-1-2 lateral supports, 4-2 vertical limiting devices, 4-2-1 vertical limiting rails, 4-2-1-1 supporting rollers, 4-2-1-2 bases and 4-2-2 supporting and connecting devices; 4-3 auxiliary supporting columns, 5 gantry type suspension devices, 5-1 columns, 5-2 supporting platforms, 5-3 suspension beams, 5-4 lifting rings and 5-5T-shaped groove connecting plates.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1 and fig. 2, the test bed for track-changing function and reliability of a novel track-changing bogie of the present invention mainly comprises a moving platform power driving device 1, a translational track-distance changing device 2, a bearing walking track 3, a limiting device 4 and a gantry type suspension device 5; the power driving device 1 of the moving platform is fixedly arranged on the ground, the translation type track gauge changing device 2 is driven to longitudinally move through a motor-crank connecting rod kinematic pair, and the translation type track gauge changing device 2 unlocks and locks a track gauge changing wheel set and provides a transverse guiding effect for the axial track gauge changing movement of the wheel set along a wheel shaft; the bearing walking rails 3 are symmetrically arranged below two sides of the translation type track gauge changing device 2 and provide bearing and longitudinal guiding functions for the translation type track gauge changing device; the limiting devices 4 are symmetrically arranged on two sides of the translation type track gauge converting device 2 and used for carrying out transverse centering positioning and vertical limiting on linear reciprocating motion of the translation type track gauge converting device; the gantry type suspension device 5 fixes the wheel pair position of the bogie and unloads the wheel pair.

Referring to fig. 3, the power driving apparatus 1 for moving platform includes: the device comprises a motor 1-1, a first coupler 1-2, a speed reducer 1-3, a second coupler 1-4, a transmission shaft 1-5, a first bearing 1-6, a first bearing seat 1-7, a second bearing 1-8, a second bearing seat 1-9, a turntable 1-10, a connecting rod shaft pin 1-11 and a connecting rod 1-12; the motor 1-1, the speed reducer 1-3, the first bearing seat 1-7 and the second bearing seat 1-9 are respectively fixed on the ground through foundation bolts; the output shaft of the motor 1-1 is connected with the input shaft of the speed reducer 1-3 through a first coupler 1-2, the output shaft of the speed reducer 1-3 is connected with a transmission shaft 1-5 through a second coupler 1-4, and the transmission shaft 1-5 is supported on a first bearing seat 1-7 and a second bearing seat 1-9 through a first bearing 1-6 and a second bearing 1-8 respectively; the transmission shaft 1-5 is connected with the rotary disc 1-10 through a key; the motor 1-1 is used for reducing the speed and increasing the torque of the power through the speed reducer 1-3 and then transmitting the power to the transmission shaft 1-5, so as to drive the rotary disc 1-10 to rotate; the rotary table 1-10 is fixedly connected with one end of a connecting rod shaft pin 1-11, the other end of the connecting rod shaft pin 1-11 is movably connected with a connecting rod 1-12, a rolling bearing is arranged in the middle of the rotary table to ensure that the connecting rod 1-12 rotates around the connecting rod shaft pin 1-11 relatively, the other end of the connecting rod 1-12 is hinged with the moving platform 2-1, the central axis of the rotary table 1-10 and the horizontal central plane of the moving platform 2-1 are in the same plane, and a crank-connecting rod mechanism is ensured to be in a centering mode, so that the moving platform 2-1 keeps constant; the crank connecting rod mechanism converts the rotary motion of the rotary table 1-10 into the linear translation motion of the movable platform 2-1, and the direction of the linear motion is ensured by the positioning and guiding action of the limiting device 4; the longitudinal installation position of the power driving device 1 of the moving platform ensures that the connecting rod does not interfere with the end part of the translation type track gauge changing device 2 when moving to the top dead center.

Referring to fig. 4 to 6, the translation type track gauge changing device 2 comprises a moving platform 2-1, a track gauge changing guide rail 2-2 and an unlocking and locking matching device 2-3; the moving platform 2-1 is formed by welding a hollow square tube and a rectangular tube to realize light weight, and the end part of the moving platform 2-1 is hinged with the connecting rod 1-12; the laying mode of the variable-gauge guide rail 2-2 on the moving platform 2-1 is divided into a gauge A guide section 2-4 and a gauge B guide section 2-5 according to different gauges, the two variable-gauge guide rails 2-2 are arranged in a splayed shape or a reversed splayed shape with reference to a central line, the gauge A and the gauge B can be adjusted according to the test requirement of the variable-gauge bogie, the variable-gauge guide rail 2-2 is fixed on the moving platform 2-1 through bolts, and the wheels on two sides are driven by the change of the gauges to simultaneously move inwards or outwards relative to wheel axles so as to realize the conversion of the wheel gauges; the unlocking and locking matching device 2-3 comprises a support frame 2-3-1, the device comprises unlocking locking rails 2-3-2 and connecting plates 2-3-3, wherein the unlocking locking rails 2-3-2 are welded on support frames 2-3-1, the mounting position of the unlocking locking rails can ensure that small rollers on a locking device of a track-variable wheel pair can run in the rails, along with the reciprocating motion of a mobile platform 2-1, a locking mechanism of the track-variable wheel pair completes unlocking and locking actions according to the stroke change of the unlocking locking rails 2-3-2, the support frames 2-3-1 in each row are welded into a whole through the connecting plates 2-3-3 to improve the bearing capacity, and the support frames 2-3-1 in each row are symmetrically welded on the two sides of the upper surface of the mobile platform 2-1 according to a specified distance.

Referring to fig. 7, the bearing walking rail 3 comprises a bearing roller 3-1 and a mounting seat 3-2, the bearing roller 3-1 is assembled on the side wall of the mounting seat 3-2, and a certain distance is reserved between the bearing roller 3-1 and the bottom of the mounting seat 3-2 to ensure that the bearing roller 3-1 rotates freely; when the device works, the bottom surface of the moving platform 2-1 is in contact with the surface of the bearing roller 3-1 to do reciprocating translational motion; the bearing walking rails 3 are symmetrically arranged below two sides of the moving platform 2-1, and the length of the bearing walking rails ensures that the moving platform 2-1 is always in contact with the surface of the bearing roller 3-1 in a reciprocating motion stroke.

Referring to fig. 8 and 9, the limiting device 4 comprises a transverse centering positioning rail 4-1, a vertical limiting device 4-2 and an auxiliary supporting upright post 4-3; the transverse centering positioning rail 4-1 comprises a roller 4-1-1 and a lateral support 4-1-2, and the lateral support 4-1-2 is fixed on the inner sides of a vertical column 5-1 and an auxiliary support vertical column 4-3 of the gantry type suspension device 5 by screws; the surface of a roller 4-1-1 of a transverse centering positioning rail 4-1 is contacted with the side surface of a moving platform 2-1, so that the transverse displacement of the moving platform 2-1 during longitudinal movement is limited and is not blocked, and the translation type track gauge changing device 2 always performs linear reciprocating motion along the direction of a central line in a centering way; the vertical limiting device 4-2 comprises a vertical limiting rail 4-2-1 and a supporting and connecting device 4-2-2, the vertical limiting rail 4-2-1 comprises a supporting roller 4-2-1-1 and a base 4-2-1-2, the base 4-2-1-2 and the supporting and connecting device 4-2-2 are welded together, and the supporting and connecting device 4-2-2 is fixed on the inner sides of a stand column 5-1 and an auxiliary supporting stand column 4-3 of the gantry type suspension device 5 through screws so as to realize the fixed support of the vertical limiting rail 4-2-1; the surface of the vertical limiting rail 4-2-1 is contacted with the upper surface of the moving platform 2-1, so that the vertical displacement of the moving platform 2-1 during longitudinal movement is limited without clamping stagnation, and the lower surface of the moving platform 2-1 is always contacted with the bearing roller 3-1 bearing the walking rail 3 to do linear reciprocating motion; the outer side wall of the base 4-2-1-2 of the vertical limiting rail 4-2-1 is provided with a groove of 1-2 mm, so that the relative position of the vertical limiting rail 4-2-1 and the horizontal centering positioning rail 4-1 is ensured; the four auxiliary supporting upright columns 4-3 are uniformly arranged along the outer side of the bearing walking rail 3, the inner side surfaces of the four auxiliary supporting upright columns and the inner side surface of the gantry upright column are positioned in the same plane, the transverse centering positioning rail 4-1 and the vertical limiting device 4-2 are symmetrically arranged at two sides of the moving platform 2-1, and the length of the transverse centering positioning rail 4-1 is consistent with that of the bearing walking rail 3; the outer side end face of the bearing roller 3-1 bearing the walking rail 3 and the outer side end face of the supporting roller 4-2-1-1 of the vertical limiting rail 4-2-1 are positioned in the same vertical plane, so that the horizontal linear motion of the moving platform 2-1 is ensured.

Referring to fig. 10 and 11, the gantry type suspension device 5 comprises a vertical column 5-1, a supporting platform 5-2, a suspension beam 5-3, a lifting ring 5-4 and a T-shaped groove connecting plate 5-5; the gantry type suspension device 5 spans across the moving platform 2-1, and the transverse center line of the gantry type suspension device and the transverse center lines of the bearing walking rail 3 and the limiting device 4 are in the same plane; the lifting rings 5-4 are fixed on T-shaped groove connecting plates 5-5 through screws, the T-shaped groove connecting plates 5-5 are welded on suspension beams 5-3, the distance between the two lifting rings 5-4 is adjustable to meet the requirements of bogies with different structures, the size of central holes of the two lifting rings 5-4 is determined according to the change of the axle diameter of the variable-gauge wheel pair, and the central holes are mainly used for suspending and fixing the position of the variable-gauge wheel pair so that the wheel pair is suspended and unloaded to complete unlocking and locking and track gauge conversion.

The novel track-changing function and reliability test bed for the track-changing bogie is used for detecting whether the track-changing function can be realized by the track-changing bogie, performing reliability test on a track-changing mechanism of the bogie through cyclic track-changing action, performing fatigue life test on a track-changing unlocking and locking mechanism and the like, and mainly comprises the following steps:

the method comprises the following steps: the gantry type suspension device suspends and fixes the position of the wheel pair, so that the wheel pair is suspended and unloaded;

step two: the power driving device of the mobile platform drives the translation type track gauge changing device to reciprocate along the bearing walking track, and the motion direction is ensured by the positioning and guiding action of the limiting device;

step three: the track gauge unlocking-locking mechanism of the track gauge-variable bogie carries out track gauge unlocking and locking and track changing actions of the track gauge-variable bogie according to the stroke change of the unlocking-locking track, wheels on two sides move inwards or outwards relative to a wheel axle simultaneously under the guiding drive of the track gauge-variable guide track during track gauge changing, the conversion of the wheel gauge is realized, the cyclic unlocking, locking and track changing actions are realized through the reciprocating motion of the platform, and the reliability test of track gauge conversion is carried out.

Claims

1. A novel track-changing function and reliability test bed of a track-changing bogie is characterized by mainly comprising a moving platform power driving device (1), a translation type track gauge conversion device (2), a bearing walking rail (3), a limiting device (4) and a gantry type suspension device (5); the power driving device (1) of the moving platform is fixedly arranged on the ground, the translational track gauge changing device (2) is driven to longitudinally move through a motor-crank connecting rod kinematic pair, and the translational track gauge changing device (2) unlocks and locks the track gauge changing wheel set and provides a transverse guiding effect for the axial track gauge changing movement of the wheel set along the wheel shaft; the bearing walking rails (3) are symmetrically arranged below two sides of the translation type track gauge changing device (2) and provide bearing and longitudinal guiding functions for the translation type track gauge changing device; the limiting devices (4) are symmetrically arranged on two sides of the translation type track gauge changing device (2) and are used for carrying out transverse centering and vertical limiting on linear reciprocating motion of the translation type track gauge changing device; the gantry type suspension device (5) fixes the position of the wheel pair of the bogie and unloads the wheel pair;

the power driving device (1) for the mobile platform comprises: the device comprises a motor (1-1), a first coupler (1-2), a speed reducer (1-3), a second coupler (1-4), a transmission shaft (1-5), a first bearing (1-6), a first bearing seat (1-7), a second bearing (1-8), a second bearing seat (1-9), a turntable (1-10), a connecting rod shaft pin (1-11) and a connecting rod (1-12); the motor (1-1), the speed reducer (1-3), the first bearing seat (1-7) and the second bearing seat (1-9) are fixed on the ground through foundation bolts respectively; an output shaft of the motor (1-1) is connected with an input shaft of the speed reducer (1-3) through a first coupler (1-2), an output shaft of the speed reducer (1-3) is connected with a transmission shaft (1-5) through a second coupler (1-4), and the transmission shaft (1-5) is supported on a first bearing seat (1-7) and a second bearing seat (1-9) through a first bearing (1-6) and a second bearing (1-8) respectively; the transmission shaft (1-5) is connected with the rotary disc (1-10) through a key; the motor (1-1) is used for transmitting power to the transmission shaft (1-5) after reducing the speed and increasing the torque of the speed reducer (1-3) so as to drive the turntable (1-10) to rotate; the rotary table (1-10) is fixedly connected with one end of a connecting rod shaft pin (1-11), the other end of the connecting rod shaft pin (1-11) is movably connected with a connecting rod (1-12), a rolling bearing is arranged in the middle of the rotary table to ensure that the connecting rod (1-12) rotates around the connecting rod shaft pin (1-11) relatively, the other end of the connecting rod (1-12) is hinged with the moving platform (2-1), the central axis of the rotary table (1-10) and the horizontal central plane of the moving platform (2-1) are in the same plane, and the crank-connecting rod mechanism is ensured to be in a concentric mode, so that the moving platform (2-1) keeps constant motion; the crank connecting rod mechanism enables the rotary motion of the rotary table (1-10) to be converted into the linear translation motion of the moving platform (2-1), and the direction of the linear motion is ensured by the positioning and guiding action of the limiting device (4); the longitudinal installation position of the power driving device (1) of the moving platform ensures that the connecting rod does not interfere with the end part of the translation type track gauge changing device (2) when moving to the top dead center.

2. The novel track-changing function and reliability test bed of the track-changing bogie according to claim 1, characterized in that the translation track-changing device (2) comprises a moving platform (2-1), a track-changing guide rail (2-2) and an unlocking and locking matching device (2-3); the moving platform (2-1) is formed by welding a hollow square tube and a rectangular tube to realize light weight, and the end part of the moving platform (2-1) is hinged with the connecting rod (1-12); the laying mode of the variable-gauge guide rail (2-2) on the mobile platform (2-1) is divided into a gauge A guide section (2-4) and a gauge B guide section (2-5) according to different gauges, the two variable-gauge guide rails (2-2) are arranged in a splayed shape or a reversed splayed shape according to a center line, the gauge A and the gauge B can be adjusted according to the test requirement of the variable-gauge bogie, the variable-gauge guide rail (2-2) is fixed on the mobile platform (2-1) through bolts, and the change of the gauges drives wheels on two sides to simultaneously move inwards or outwards relative to a wheel axle so as to realize the conversion of the wheel gauges; the unlocking and locking matching device (2-3) comprises a supporting frame (2-3-1), the device comprises unlocking locking rails (2-3-2) and connecting plates (2-3-3), wherein the unlocking locking rails (2-3-2) are welded on support frames (2-3-1), the mounting position of the unlocking locking rails can ensure that small rollers on a locking device of a variable-track-pitch wheel pair can run in the rails, along with the reciprocating motion of a mobile platform (2-1), a locking mechanism of the variable-track-pitch wheel pair completes unlocking and locking actions according to the stroke change of the unlocking locking rails (2-3-2), the support frames (2-3-1) in each row are welded into a whole through the connecting plates (2-3-3) to improve the bearing capacity, and the support frames (2-3-1) in each row are symmetrically welded on two sides of the upper surface of the mobile platform (2-1) according to a specified distance.

3. The novel track-changing function and reliability test bed of the track-changing bogie according to claim 1 is characterized in that the bearing running rail (3) and the limiting device (4) jointly carry out bearing guiding and centering limiting on the longitudinal movement of the translation type track gauge changing device (2); the gantry type suspension device (5) suspends and fixes the position of the variable-gauge wheel set, so that the wheel set is suspended and unloaded, and a supporting effect is achieved for mounting the bearing walking rail (3) and the limiting device (4); the bearing walking rail (3) comprises a bearing roller (3-1) and a mounting seat (3-2), the bearing roller (3-1) is assembled on the side wall of the mounting seat (3-2), and a certain distance is reserved between the bearing roller (3-1) and the bottom of the mounting seat (3-2) to ensure that the bearing roller (3-1) freely rotates; when the device works, the bottom surface of the movable platform (2-1) is in contact with the surface of the bearing roller (3-1) to do reciprocating translational motion; the bearing walking rails (3) are symmetrically arranged below two sides of the moving platform (2-1), and the length of the bearing walking rails ensures that the moving platform (2-1) is always in contact with the surface of the bearing roller (3-1) in a reciprocating motion stroke; the limiting device (4) comprises a transverse centering positioning rail (4-1), a vertical limiting device (4-2) and an auxiliary supporting upright post (4-3); the transverse centering positioning rail (4-1) comprises a roller (4-1-1) and a lateral support (4-1-2), and the lateral support (4-1-2) is fixed on the inner sides of a vertical column (5-1) and an auxiliary support vertical column (4-3) of the gantry type suspension device (5) by screws; the surface of a roller (4-1-1) of the transverse centering positioning rail (4-1) is contacted with the side surface of the movable platform (2-1), so that the transverse displacement of the movable platform (2-1) during longitudinal movement is limited and no clamping stagnation is caused, and the translation type track gauge changing device (2) always performs linear reciprocating motion along the direction of a central line in a centering way; the vertical limiting device (4-2) comprises a vertical limiting rail (4-2-1) and a supporting and connecting device (4-2-2), the vertical limiting rail (4-2-1) comprises a supporting roller (4-2-1-1) and a base (4-2-1-2), the base (4-2-1-2) and the supporting and connecting device (4-2-2) are welded together, and the supporting and connecting device (4-2-2) is fixed on the inner sides of a stand column (5-1) and an auxiliary supporting stand column (4-3) of the gantry type suspension device (5) through screws, so that the vertical limiting rail (4-2-1) is fixedly supported; the surface of the vertical limiting rail (4-2-1) is in contact with the upper surface of the moving platform (2-1) to limit the vertical displacement of the moving platform (2-1) during longitudinal movement without clamping stagnation, so that the lower surface of the moving platform (2-1) is always in contact with the bearing roller (3-1) bearing the walking rail (3) to do linear reciprocating motion; the outer side wall of the base (4-2-1-2) of the vertical limiting rail (4-2-1) is provided with a groove of 1-2 mm, so that the relative position of the vertical limiting rail and the transverse centering positioning rail (4-1) is ensured; the four auxiliary supporting upright columns (4-3) are uniformly arranged along the outer side of the bearing walking rail (3), the inner side surfaces of the four auxiliary supporting upright columns and the inner side surface of the gantry upright column are positioned in the same plane, the transverse centering positioning rail (4-1) and the vertical limiting device (4-2) are symmetrically arranged at two sides of the moving platform (2-1), and the length of the transverse centering positioning rail and the length of the vertical limiting device are consistent with that of the bearing walking rail (3); the outer end face of the bearing roller (3-1) bearing the walking rail (3) and the outer end face of the supporting roller (4-2-1-1) of the vertical limiting rail (4-2-1) are positioned in the same vertical plane, so that the horizontal linear motion of the moving platform (2-1) is ensured; the gantry type suspension device (5) comprises an upright post (5-1), a supporting platform (5-2), a suspension beam (5-3), a lifting ring (5-4) and a T-shaped groove connecting plate (5-5); the gantry type suspension device (5) crosses the moving platform (2-1), and the transverse center line of the gantry type suspension device and the transverse center lines of the bearing walking rail (3) and the limiting device (4) are in the same plane; the lifting rings (5-4) are fixed on T-shaped groove connecting plates (5-5) through screws, the T-shaped groove connecting plates (5-5) are welded on suspension beams (5-3), the distance between the two lifting rings (5-4) is adjustable to meet the requirements of bogies with different structures, the size of central holes of the two lifting rings (5-4) is determined according to the change of the axle diameter of the variable-gauge wheel pair, and the lifting device is mainly used for hanging and fixing the position of the variable-gauge wheel pair to enable the wheel pair to be hung in the air and unloaded to complete unlocking locking and track gauge conversion actions.