CN210626065U - Track-changing function detection and fatigue reliability test bed for track-changing wheel set with variable track pitch - Google Patents
Track-changing function detection and fatigue reliability test bed for track-changing wheel set with variable track pitch Download PDFInfo
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- CN210626065U CN210626065U CN201921823250.XU CN201921823250U CN210626065U CN 210626065 U CN210626065 U CN 210626065U CN 201921823250 U CN201921823250 U CN 201921823250U CN 210626065 U CN210626065 U CN 210626065U
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Abstract
The utility model discloses a track-changing function test and fatigue reliability test bed for track-changing wheel sets with variable track pitches, which mainly comprises a bearing portal frame, an unlocking and locking matching component, a wheel set rotation driving component, a wheel set track-changing driving component and a base; the bearing portal frame supports and positions the variable-gauge wheel set, unloads the wheel set, drives a cam on the unlocking and locking matching component to rotate through the motor, further enables the variable-gauge mechanism of the wheel set to unlock or lock the wheel set according to the change of the cam stroke, the friction wheel of the wheel set rotation driving component drives the wheel set to rotate, and an actuator of the wheel set variable-gauge driving component pushes or pulls the wheel to move axially according to instructions, so that gauge conversion is finally achieved. The utility model discloses an unblock or the locking of cam control wheel pair, friction wheel drive wheel pair are rotatory, and the axial displacement of actuator control wheel pair carries out periodic cycle test, provides the basis for the variable gauge mechanism functional test and the reliability analysis of research variable gauge wheel pair.
Description
Technical Field
The utility model relates to a rail vehicle structural test equips, concretely relates to becomes track gauge wheel pair and becomes rail function detection and fatigue reliability test bench.
Background
With the vigorous development of the economic zone of silk roads, railway transportation increasingly becomes one of the most main onshore trade channels in the European continent of Asia, China and regions of various countries along the line cooperate closely, but because the countries adopt different track gauge standards, the development of international intermodal transportation is greatly limited, and in order to solve the problem of direct operation between different sections of track gauges, the technology of variable-track-gauge wheel sets appears and develops rapidly.
In order to ensure that the produced track-changing bogie can smoothly complete track changing during actual operation, whether the track-changing function of a track-changing mechanism of a wheel pair can be realized or not needs to be detected before the actual vehicle is assembled, and the fatigue reliability is detected through a cycle test, the prior art has complex structure and lower practicability, therefore the utility model provides a become gauge wheel pair and become rail function detection and fatigue reliability test platform adopts interior cam mechanism to realize the unblock or the locking of wheel pair, and friction wheel drive becomes gauge wheel pairing rotation, and axial translation and then drive wheel removal are done to actuator drive moving platform and spare part on it and become the gauge, the utility model discloses can make become gauge wheel pair carry out the gauge transform under the rotation state, experimental actual conditions and simple structure are close more, provide basic platform for becoming the fatigue reliability test under gauge wheel pair becomes rail function detection and the cycle working condition.
SUMMERY OF THE UTILITY MODEL
For solving the problem, the utility model provides a become gauge wheel pair and become rail function detection and fatigue reliability test bench, it is rotatory to adopt motor drive friction pulley, and then the drive becomes gauge wheel pair to rotate, the actual road running state of simulation vehicle, another motor drive cam is rotatory, the stroke change drive unblock locking mechanism of cam realizes wheel unblock or locking, and simultaneously, actuator drive moving platform and spare part are axial motion and then drive wheel carries out the gauge change on it, finally make the wheel pair carry out the gauge transform under running state, and accomplish unblock locking and the gauge function detection of becoming of unblock locking mechanism and become gauge wheel pair and fatigue life test through the cycle test.
In order to realize above-mentioned purpose, a become gauge wheel pair and become rail function detection and fatigue reliability test bench, mainly include: the device comprises a bearing portal frame 1, an unlocking and locking matching component 2, a wheel set rotation driving component 3, a wheel set track gauge changing driving component 4 and a base 5; the bearing portal frame 1 supports and positions the variable-gauge wheel set to unload the wheel set; the unlocking and locking matching component 2 unlocks or locks the variable-gauge wheel pair; the wheel pair rotation driving component 3 adopts a friction wheel to drive the wheel pair to rotate, and the wheel pair track-variable driving component 4 enables an actuator to push or pull the wheel to move along the axial direction according to instructions, so that the track gauge change is finally realized; the bearing portal frame 1, the unlocking and locking matching component 2 and the wheel pair track-variable driving component 4 are symmetrically arranged in a T-shaped groove of the base 5 through bolts, so that the position can be conveniently adjusted.
The bearing portal frame 1 comprises: the device comprises a vertical column 1-1, a support beam 1-2 and a positioning boss 1-3; the two bearing portal frames are symmetrically arranged along the longitudinal center line, and the lower ends of the upright posts 1-1 are fixed on the base 5 through bolts; the supporting beam 1-2 is fixed on the upright post 1-1 through a screw; the positioning boss 1-3 is connected to the supporting beam 1-2 through a screw and mainly comprises a bearing shoe supporting surface 1-3-1 and a lower axle box positioning groove 1-3-2, the lower surface of a bearing shoe of the wheel pair is contacted with the bearing shoe supporting surface 1-3-1 when the wheel pair is installed, and a lower part bump of a lower axle box shell of the wheel pair is installed in the lower axle box positioning groove 1-3-2; the longitudinal span of the bearing portal frame 1 can ensure that the wheel set rotary driving component 3 and the wheel set variable-gauge driving component 4 do not interfere with each other when axially moving; the bearing portal frame 1 is mainly used for fixing and supporting the variable-gauge wheel set, so that the wheel set is unloaded.
The unlocking and locking mating assembly 2 comprises: the device comprises a first motor 2-1, a first coupler 2-2, a first speed reducer 2-3, a cam 2-4 and a support frame 2-5; the first motor 2-1 and the first speed reducer 2-3 are fixed on a support frame 2-5 through bolts, and the support frame 2-5 is installed on a base 5 through bolts; the output shaft of the first motor 2-1 is connected with the input shaft of the first speed reducer 2-3 through a first coupler 2-2, and the output shaft end of the first speed reducer 2-3 is connected with the cam 2-4 through a key; the power of the first motor 2-1 is reduced in speed and increased in torque through a first speed reducer 2-3 and then drives a cam 2-4 to rotate, a grooved rail is arranged on the outer edge of the cam 2-4 and comprises an unlocking and locking section 2-4-1, a variable-gauge keeping section 2-4-2 and a transition section 2-4-3, and an unlocking and locking mechanism of a variable-gauge wheel pair periodically unlocks or locks the wheel pair under the guiding drive of the outer edge grooved rail according to the stroke change of the cam 2-4; the supporting frame 2-5 is formed by welding sectional materials, the longitudinal span and the transverse span of the supporting frame can ensure that the axial movement of the wheel set rotation driving assembly 3 and the wheel set variable-track-gauge driving assembly 4 is not interfered, and lifting lugs are arranged on the side surface of the supporting frame 2-5 to facilitate the integral disassembly and assembly of the unlocking and locking matching assembly 2.
The wheelset rotary drive assembly 3 comprises: a second motor 3-1, a second coupler 3-2, a second speed reducer 3-3, a third coupler 3-4, a transmission shaft 3-5, a first bearing 3-6, a first bearing seat 3-7, a friction wheel 3-8, a second bearing 3-9 and a second bearing seat 3-10; the second motor 3-1, the second speed reducer 3-3, the first bearing seat 3-7 and the second bearing seat 3-10 are respectively fixed on the movable platform 4-1 through bolts; an output shaft of the second motor 3-1 is connected with an input shaft of a second speed reducer 3-3 through a second coupler 3-2, an output shaft of the second speed reducer 3-3 is connected with a transmission shaft 3-5 through a third coupler 3-4, and the transmission shaft 3-5 is supported on a first bearing seat 3-7 and a second bearing seat 3-10 through a first bearing 3-6 and a second bearing 3-9 respectively; the transmission shaft 3-5 is connected with the friction wheel 3-8 through a key; the outer edges of the friction wheels 3-8 are made of non-metal wear-resistant materials, a certain shape is designed according to the wheel set tread, the friction wheels 3-8 are guaranteed to be always in contact with the outer edges of the track-variable wheel sets, the protruding wheel rims on the two sides of the friction wheels 3-8 provide guiding and limiting effects for axial movement of the wheel sets, and the requirement for the axial movement distance of the track-variable wheel sets is met; the power of the second motor 3-1 is transmitted to the transmission shaft 3-5 after being decelerated and torque-increased by the second speed reducer 3-3, so that the friction wheel 3-8 is driven to rotate, and the friction wheel 3-8 further drives the track-variable wheel pair to rotate.
The wheel set variable-gauge driving assembly 4 comprises: the device comprises a mobile platform 4-1, a linear guide rail 4-2, an actuator 4-3 and an actuator support 4-4; the moving platform 4-1 is connected with push rods at two ends of the actuator 4-3 through flanges; the linear guide rails 4-2 comprise sliders 4-2-1 and guide rails 4-2-2, the sliders 4-2-1 are connected with the moving platform 4-1 through bolts, the sliders 4-2-1 and the guide rails 4-2-2 are mutually nested, the guide rails 4-2-2 are connected with the base 5 through bolts, and the two linear guide rails 4-2 are symmetrically arranged relative to a transverse central plane; the guide rail 4-2-2 guides and limits and centers the axial horizontal linear motion of the sliding block 4-2-1 and the moving platform 4-1 while bearing the loads of the sliding block 4-2-1, the moving platform 4-1 and parts thereon; the actuator 4-3 is arranged on the actuator support 4-4 through a screw, and the actuator support 4-4 is arranged on the base 5 through a bolt; the actuator 4-3 is a double-piston hydraulic cylinder, the piston stroke is the track gauge difference of variable track gauge, and push rods at two ends of the actuator 4-3 are connected with the moving platform 4-1 through flanges; the actuator 4-3 executes operation according to the received driving or stopping driving instruction, pushes or pulls the moving platform 4-1 to move axially along the guide rail 4-2-2, and then drives the wheels at two sides to move inwards or outwards relative to the wheel shaft simultaneously to reach a new track gauge position, so as to complete the change of the track gauge.
Compared with the prior art, the beneficial effects of the utility model are that:
a become gauge wheel pair and become rail function detection and fatigue reliability test bench, can simulate the process that the gauge wheel pair carries out the gauge transform under actual running state, it is rotatory to adopt friction wheel drive wheel pair, the unblock or the locking of cam control wheel pair, by direction and the distance of actuator control wheel pair axial motion, the experiment is close actual operation operating mode more, the axial motion of wheel is steady, compact structure and easily realization, it is equally suitable for to the gauge wheel pair that has different structural style, can carry out gauge wheel pair and become rail function test and fatigue life test, it provides the safety guarantee to become the gauge rail vehicle operation in the actual motion.
Drawings
Fig. 1 is an axonometric view of a track-changing function testing and fatigue reliability testing stand for a track-changing wheel pair of the utility model;
fig. 2 is a front view of a track-changing function testing and fatigue reliability testing stand for a track-changing wheel set according to the present invention;
fig. 3 is a top view of a track-changing function testing and fatigue reliability testing stand for a track-changing wheel set according to the present invention;
FIG. 4 is a schematic view of an axonometric view of the bearing portal frame and a structure of the positioning boss of the present invention;
figure 5 is an isometric view of an unlocking and locking mating assembly according to the present invention;
figure 6 is a detail view of the cam of the present invention;
fig. 7 is a schematic view of the wheel set rotary drive assembly and the wheel set pitch-variable drive assembly according to the present invention;
figure 8 is an isometric view of a wheel-set rotary drive assembly according to the present invention;
FIG. 9 is a detail view of a friction wheel according to the present invention;
figure 10 is an isometric view of a wheel set gauge change drive assembly according to the present invention;
1. the device comprises a bearing portal frame, 1-1 upright columns, 1-2 supporting beams, 1-3 positioning bosses, 1-3-1 bearing shoe supporting surfaces and 1-3-2 lower axle box positioning grooves, wherein the bearing portal frame is provided with a bearing portal frame; 2. the device comprises an unlocking and locking matching component, a motor 2-1, a coupler 2-2, a speed reducer 2-3, a cam 2-4, an unlocking and locking section 2-4-1, a track distance changing holding section 2-4-2, a transition section 2-4-3 and a support frame 2-5; 3. the device comprises a wheel set rotation driving assembly, a motor 3-1, a motor II, a coupler 3-2, a reducer 3-3, a speed reducer 3-4, a coupler III, a transmission shaft 3-5, a bearing 3-6, a bearing seat 3-7, a friction wheel 3-8, a bearing II 3-9 and a bearing seat II 3-10; 4. the wheel set track-variable driving assembly comprises a wheel set track-variable driving assembly, 4-1 parts of a moving platform, 4-2 parts of a linear guide rail, 4-2-1 parts of a sliding block, 4-2-2 parts of a guide rail, 4-3 parts of an actuator and 4-4 parts of an actuator support; 5. a base.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 to 3, a track-changing function testing and fatigue reliability testing stand for track-changing wheel set mainly includes: the device comprises a bearing portal frame 1, an unlocking and locking matching component 2, a wheel set rotation driving component 3, a wheel set track gauge changing driving component 4 and a base 5; the bearing portal frame 1 supports and positions the variable-gauge wheel set to unload the wheel set; the unlocking and locking matching component 2 unlocks or locks the variable-gauge wheel pair; the wheel pair rotation driving component 3 adopts a friction wheel to drive the wheel pair to rotate, and the wheel pair track-variable driving component 4 enables an actuator to push or pull the wheel to move along the axial direction according to instructions, so that the track gauge change is finally realized; the bearing portal frame 1, the unlocking and locking matching component 2 and the wheel pair track-variable driving component 4 are symmetrically arranged in a T-shaped groove of the base 5 through bolts, so that the position can be conveniently adjusted.
Referring to fig. 4, the loading gantry 1 includes: the device comprises a vertical column 1-1, a support beam 1-2 and a positioning boss 1-3; the two bearing portal frames are symmetrically arranged along the longitudinal center line, and the lower ends of the upright posts 1-1 are fixed on the base 5 through bolts; the supporting beam 1-2 is fixed on the upright post 1-1 through a screw; the positioning boss 1-3 is connected to the supporting beam 1-2 through a screw and mainly comprises a bearing shoe supporting surface 1-3-1 and a lower axle box positioning groove 1-3-2, the lower surface of a bearing shoe of the wheel pair is contacted with the bearing shoe supporting surface 1-3-1 when the wheel pair is installed, and a lower part bump of a lower axle box shell of the wheel pair is installed in the lower axle box positioning groove 1-3-2; the longitudinal span of the bearing portal frame 1 can ensure that the wheel set rotary driving component 3 and the wheel set variable-gauge driving component 4 do not interfere with each other when axially moving; the bearing portal frame 1 is mainly used for fixing and supporting the variable-gauge wheel set, so that the wheel set is unloaded.
Referring to fig. 5 and 6, the unlocking locking mating assembly 2 includes: the device comprises a first motor 2-1, a first coupler 2-2, a first speed reducer 2-3, a cam 2-4 and a support frame 2-5; the first motor 2-1 and the first speed reducer 2-3 are fixed on a support frame 2-5 through bolts, and the support frame 2-5 is installed on a base 5 through bolts; the output shaft of the first motor 2-1 is connected with the input shaft of the first speed reducer 2-3 through a first coupler 2-2, and the output shaft end of the first speed reducer 2-3 is connected with the cam 2-4 through a key; the power of the first motor 2-1 is reduced in speed and increased in torque through a first speed reducer 2-3 and then drives a cam 2-4 to rotate, a grooved rail is arranged on the outer edge of the cam 2-4 and comprises an unlocking and locking section 2-4-1, a variable-gauge keeping section 2-4-2 and a transition section 2-4-3, and an unlocking and locking mechanism of a variable-gauge wheel pair periodically unlocks or locks the wheel pair under the guiding drive of the outer edge grooved rail according to the stroke change of the cam 2-4; the supporting frame 2-5 is formed by welding sectional materials, the longitudinal span and the transverse span of the supporting frame can ensure that the axial movement of the wheel set rotation driving assembly 3 and the wheel set variable-track-gauge driving assembly 4 is not interfered, and lifting lugs are arranged on the side surface of the supporting frame 2-5 to facilitate the integral disassembly and assembly of the unlocking and locking matching assembly 2.
Referring to fig. 7 to 9, the wheelset rotary drive assembly 3 includes: a second motor 3-1, a second coupler 3-2, a second speed reducer 3-3, a third coupler 3-4, a transmission shaft 3-5, a first bearing 3-6, a first bearing seat 3-7, a friction wheel 3-8, a second bearing 3-9 and a second bearing seat 3-10; the second motor 3-1, the second speed reducer 3-3, the first bearing seat 3-7 and the second bearing seat 3-10 are respectively fixed on the movable platform 4-1 through bolts; an output shaft of the second motor 3-1 is connected with an input shaft of a second speed reducer 3-3 through a second coupler 3-2, an output shaft of the second speed reducer 3-3 is connected with a transmission shaft 3-5 through a third coupler 3-4, and the transmission shaft 3-5 is supported on a first bearing seat 3-7 and a second bearing seat 3-10 through a first bearing 3-6 and a second bearing 3-9 respectively; the transmission shaft 3-5 is connected with the friction wheel 3-8 through a key; the outer edges of the friction wheels 3-8 are made of non-metal wear-resistant materials, a certain shape is designed according to the wheel set tread, the friction wheels 3-8 are guaranteed to be always in contact with the outer edges of the track-variable wheel sets, the protruding wheel rims on the two sides of the friction wheels 3-8 provide guiding and limiting effects for axial movement of the wheel sets, and the requirement for the axial movement distance of the track-variable wheel sets is met; the power of the second motor 3-1 is transmitted to the transmission shaft 3-5 after being decelerated and torque-increased by the second speed reducer 3-3, so that the friction wheel 3-8 is driven to rotate, and the friction wheel 3-8 further drives the track-variable wheel pair to rotate.
Referring to fig. 7 and 10, the wheelset variable gauge drive assembly 4 includes: the device comprises a mobile platform 4-1, a linear guide rail 4-2, an actuator 4-3 and an actuator support 4-4; the moving platform 4-1 is connected with push rods at two ends of the actuator 4-3 through flanges; the linear guide rails 4-2 comprise sliders 4-2-1 and guide rails 4-2-2, the sliders 4-2-1 are connected with the moving platform 4-1 through bolts, the sliders 4-2-1 and the guide rails 4-2-2 are mutually nested, the guide rails 4-2-2 are connected with the base 5 through bolts, and the two linear guide rails 4-2 are symmetrically arranged relative to a transverse central plane; the guide rail 4-2-2 guides and limits and centers the axial horizontal linear motion of the sliding block 4-2-1 and the moving platform 4-1 while bearing the loads of the sliding block 4-2-1, the moving platform 4-1 and parts thereon; the actuator 4-3 is arranged on the actuator support 4-4 through a screw, and the actuator support 4-4 is arranged on the base 5 through a bolt; the actuator 4-3 is a double-piston hydraulic cylinder, the piston stroke is the track gauge difference of variable track gauge, and push rods at two ends of the actuator 4-3 are connected with the moving platform 4-1 through flanges; the actuator 4-3 executes operation according to the received driving or stopping driving instruction, pushes or pulls the moving platform 4-1 to move axially along the guide rail 4-2-2, and then drives the wheels at two sides to move inwards or outwards relative to the wheel shaft simultaneously to reach a new track gauge position, so as to complete the change of the track gauge.
Now take the example of the process that the gauge-changeable bogie changes from standard gauge 1435mm to wide gauge 1520mm, describe in detail the utility model discloses a concrete implementation mode:
the method comprises the following steps: the bearing portal frame 1 supports the variable-gauge wheel set to unload the wheel set;
step two: the wheel pair rotation driving component 3 is started, wheels rotate under the driving of the friction wheels 4-8, and the rotating speed is equivalent to that of a vehicle running at the speed of 15 km/h;
step three: the unlocking and locking matched assembly 2 is started, the driving cam 2-4 rotates at a specified rotating speed, and the peripheral groove rail drives the wheel pair unlocking mechanism to move, so that the wheel pair is unlocked and an unlocking state is kept;
step four: an actuator 4-3 in the wheel set variable-gauge driving component 4 pushes a moving platform 4-1 to axially move along a linear guide rail 4-2 according to a received instruction, and then wheels on two sides are driven to simultaneously move outwards relative to a wheel axle to reach a new gauge position;
step five: and the cam 2-4 in the unlocking and locking matching component 2 runs to an unlocking position and drives the wheel pair unlocking mechanism to move, so that the wheel pair is locked and kept in the state, and at the moment, the conversion from the standard gauge to the wide gauge is completed.
Step six: consistent with the third step, the cam of the unlocking and locking matching component 2 rotates to the unlocking profile again, and the driving wheel pair is unlocked and keeps the state;
step seven: similar to the fourth step, an actuator 4-3 in the wheel set variable-gauge driving assembly 4 pulls the moving platform 4-1 to move axially along the linear guide rail 4-2 according to the received instruction, so as to drive wheels at two sides to simultaneously move inwards relative to the wheel axle to return to the initial gauge position;
step eight: and step five, rotating the cam of the unlocking and locking matching component 2 to the locking profile again to lock the wheel pair and keep the state, and completing the rail transfer function test of the standard rail, the wide rail and the standard rail once again.
And (4) carrying out fatigue reliability test on the track transfer mechanism, namely repeating the periodic cycle test of the three steps to the eight steps until the tested piece is damaged or the expected service life is reached, and finishing the reliability (fatigue life) test.
The above description is the preferred embodiment of the present invention, and the present invention is not limited thereto.
Claims (3)
1. The utility model provides a become gauge wheel pair and become rail function test and fatigue reliability test bench which characterized in that a become gauge wheel pair become rail function test and fatigue reliability test bench, mainly include: the device comprises a bearing portal frame (1), an unlocking and locking matching assembly (2), a wheel set rotating driving assembly (3), a wheel set variable-track-gauge driving assembly (4) and a base (5); the bearing portal frame (1) supports and positions the variable-gauge wheel set to unload the wheel set; the unlocking and locking matching assembly (2) unlocks or locks the variable-gauge wheel pair; the wheel pair rotation driving assembly (3) adopts a friction wheel to drive the wheel pair to rotate, and the wheel pair track-distance-changing driving assembly (4) enables an actuator to push or pull the wheel to move axially according to instructions, so that the track distance change is finally realized; the bearing portal frame (1), the unlocking and locking matching assembly (2) and the wheel pair variable gauge driving assembly (4) are symmetrically arranged in a T-shaped groove of the base (5) through bolts, and the position can be conveniently adjusted.
2. The testing stand for detecting the track-changing function and the fatigue reliability of the track-changing wheel set according to claim 1, wherein the unlocking and locking mating assembly (2) comprises: a first motor (2-1), a first coupler (2-2), a first speed reducer (2-3), a cam (2-4) and a support frame (2-5); the first motor (2-1) and the first speed reducer (2-3) are fixed on the support frame (2-5) through bolts, and the support frame (2-5) is installed on the base (5) through bolts; the output shaft of the first motor (2-1) is connected with the input shaft of the first speed reducer (2-3) through a first coupling (2-2), and the output shaft end of the first speed reducer (2-3) is connected with the cam (2-4) through a key; the power of the first motor (2-1) is reduced in speed and increased in torque through a first speed reducer (2-3) and then drives a cam (2-4) to rotate, a grooved rail is formed in the outer edge of the cam (2-4) and comprises an unlocking and locking section (2-4-1), a variable-gauge keeping section (2-4-2) and a transition section (2-4-3), and an unlocking and locking mechanism of a variable-gauge wheel pair periodically unlocks or locks the wheel pair under the guiding driving of the grooved rail at the outer edge according to the stroke change of the cam (2-4); the support frame (2-5) is formed by welding sectional materials, the longitudinal span and the transverse span of the support frame can ensure that the axial movement of the wheel set rotation driving assembly (3) and the wheel set variable-track-gauge driving assembly (4) is not interfered, and lifting lugs are arranged on the side surface of the support frame (2-5) to facilitate the integral disassembly and assembly of the unlocking and locking matching assembly (2).
3. The testing stand for testing the track-changing function and the fatigue reliability of the track-changing wheel set according to claim 1, characterized in that the wheel set rotation driving assembly (3) comprises: a second motor (3-1), a second coupler (3-2), a second speed reducer (3-3), a third coupler (3-4), a transmission shaft (3-5), a first bearing (3-6), a first bearing seat (3-7), a friction wheel (3-8), a second bearing (3-9) and a second bearing seat (3-10); the second motor (3-1), the second speed reducer (3-3), the first bearing seat (3-7) and the second bearing seat (3-10) are respectively fixed on the movable platform (4-1) through bolts; the output shaft of the second motor (3-1) is connected with the input shaft of the second speed reducer (3-3) through a second coupler (3-2), the output shaft of the second speed reducer (3-3) is connected with the transmission shaft (3-5) through a third coupler (3-4), and the transmission shaft (3-5) is supported on the first bearing seat (3-7) and the second bearing seat (3-10) through a first bearing (3-6) and a second bearing (3-9) respectively; the transmission shaft (3-5) is connected with the friction wheel (3-8) through a key; the outer edges of the friction wheels (3-8) are made of non-metal wear-resistant materials, a certain shape is designed according to the wheel set tread, the friction wheels (3-8) are guaranteed to be always in contact with the outer edges of the track-variable wheel sets, the protruding wheel rims on the two sides of the friction wheels (3-8) provide guiding and limiting effects for axial movement of the wheel sets, and the requirement for the axial movement distance of the track-variable wheel sets is met; the power of the second motor (3-1) is transmitted to the transmission shaft (3-5) after being decelerated and torque-increased by the second speed reducer (3-3), so that the friction wheel (3-8) is driven to rotate, and the friction wheel (3-8) further drives the track-variable pitch wheel pair to rotate; the wheel set variable-gauge driving assembly (4) comprises: the device comprises a mobile platform (4-1), a linear guide rail (4-2), an actuator (4-3) and an actuator support (4-4); the moving platform (4-1) is connected with push rods at two ends of the actuator (4-3) through flanges; the linear guide rails (4-2) comprise sliders (4-2-1) and guide rails (4-2-2), the sliders (4-2-1) are connected with the moving platform (4-1) through bolts, the sliders (4-2-1) and the guide rails (4-2-2) are mutually nested, the guide rails (4-2-2) are connected with the base (5) through bolts, and the two linear guide rails (4-2) are symmetrically arranged relative to a transverse central plane; the guide rail (4-2-2) guides, limits and centers the axial horizontal linear motion of the sliding block (4-2-1) and the moving platform (4-1) while bearing the loads of the sliding block (4-2-1), the moving platform (4-1) and parts thereon; the actuator (4-3) is arranged on the actuator support (4-4) through a screw, and the actuator support (4-4) is arranged on the base (5) through a bolt; the actuator (4-3) is a double-piston hydraulic cylinder, the piston stroke is the track gauge difference of variable track gauge, and push rods at two ends of the actuator (4-3) are connected with the moving platform (4-1) through flanges; the actuator (4-3) executes operation according to the received driving or stopping driving instruction, pushes or pulls the moving platform (4-1) to move axially along the guide rail (4-2-2), and then drives the wheels at two sides to simultaneously move inwards or outwards relative to the wheel shaft to reach a new track gauge position, so that the change of the wheel gauge is completed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921823250.XU CN210626065U (en) | 2019-10-28 | 2019-10-28 | Track-changing function detection and fatigue reliability test bed for track-changing wheel set with variable track pitch |
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| CN201921823250.XU CN210626065U (en) | 2019-10-28 | 2019-10-28 | Track-changing function detection and fatigue reliability test bed for track-changing wheel set with variable track pitch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631847A (en) * | 2019-10-28 | 2019-12-31 | 吉林大学 | Track-changing function detection and fatigue reliability test bed for track-changing wheel set with variable track pitch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631847A (en) * | 2019-10-28 | 2019-12-31 | 吉林大学 | Track-changing function detection and fatigue reliability test bed for track-changing wheel set with variable track pitch |
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