CN212513653U - Single wheel pair rail transfer test device - Google Patents

Abstract

The invention discloses a single-wheel pair rail-changing test device, which comprises two wheel pair supporting seats oppositely arranged along the axial direction of a wheel pair to be tested, wherein a rail-changing device is arranged between the two wheel pair supporting seats; and a rail-changing sliding adaptation pair is arranged between the left and right wheel supporting tables and the guide rail sliding table to drive the wheels to change rails; the track-changing actuator is used for providing track-changing driving force so as to drive the left and right wheel supporting tables to slide and displace relative to the guide rail sliding table; the force measuring device is used for driving the resistance along the sliding direction in the sliding displacement of the left and right wheel supporting tables by the rail-changing actuator. By applying the scheme, the synchronous rail transfer of the wheels on two sides can be realized by simulating the running state of the wheel sets of the vehicle, the rail transfer force of the wheel sets on two sides can be measured in the rail transfer process, and a good technical guarantee is provided for ensuring the rail transfer function of the wheel sets.

Description

Single wheel pair rail transfer test device

Technical Field

The invention relates to the technical field of rail vehicle testing, in particular to a single-wheel pair rail transfer testing device.

Background

As is known, except for the international and universal standard track gauge, some countries adopt wide tracks or narrow tracks, and the difference of the track gauge directly hinders the smooth communication and trade exchange across countries. In order to enhance the interconnection and intercommunication across countries and promote the trade, the existing rail vehicle manufacturers develop a track-changing wheel pair to change the track according to the needs, so as to adapt to the track gauge change between adjacent regions.

In view of this, it is desirable to provide a test solution for a track-variable wheel set to verify whether the track-variable wheel set can smoothly and reliably realize the track-variable function.

Disclosure of Invention

In order to solve the technical problems, the invention provides a single-wheel pair rail transfer test device which is used for simulating the running state of a vehicle wheel pair to realize synchronous rail transfer of wheels on two sides, measuring the rail transfer force of the wheel pairs on the two sides in the rail transfer process and providing a good technical guarantee for ensuring the rail transfer function of the wheel pairs.

The invention provides a single-wheel pair rail-transfer test device which comprises two wheel pair supporting seats oppositely arranged along the axial direction of a wheel pair to be tested, wherein each wheel pair supporting seat is provided with a supporting part for supporting a wheel pair axle box; the track transfer device is arranged between the two wheel pair supporting seats; the rail transfer device comprises a fixedly arranged guide rail sliding table, a left wheel supporting table and a right wheel supporting table which are symmetrically arranged on the guide rail sliding table and are respectively used for supporting a wheel; and a rail-changing sliding adaptation pair is arranged between the left wheel supporting table and the guide rail sliding table and between the right wheel supporting table and the guide rail sliding table so as to drive wheels to change rails; the track changing actuator is used for providing track changing driving force so as to drive the left wheel supporting table and the right wheel supporting table to slide and displace relative to the guide rail sliding table; the force measuring device is used for driving the left wheel supporting table and the right wheel supporting table to slide and displace along the resistance in the sliding direction by the rail transfer actuator.

Preferably, the track transfer device further comprises: the rocker arm central shaft seat is arranged between the left wheel supporting table and the right wheel supporting table; the rocker arm is hinged to the rocker arm central shaft seat through a middle pin shaft, and one side of the rocker arm is hinged to the output end of the rail-changing actuator; and the two side end parts of the first rocker arm connecting rod and the second rocker arm connecting rod are respectively hinged to the left wheel supporting table and the right wheel supporting table on two sides and corresponding sides of the rocker arms so as to transmit the rail transfer driving force.

Preferably, a first hinge point on the rocker arm, which is matched with the first rocker arm connecting rod and the second rocker arm connecting rod, is symmetrically arranged relative to the middle pin shaft; and the second hinge point of the track changing actuator and the rocker arm is positioned at the outer end of the first hinge point on the side.

Preferably, the first rocker arm connecting rod and the second rocker arm connecting rod are both composed of two sections of connecting rods and a force measuring device arranged between the two sections of connecting rods.

Preferably, the track transfer actuators are integrally provided with position sensors to acquire working strokes of the corresponding track transfer actuators.

Preferably, the left wheel supporting table and the right wheel supporting table are symmetrical structures and each include: the supporting table body is provided with a hinge pin shaft matched with the rocker arm connecting rod; the driving conical wheel and the conical roller are arranged on the corresponding supporting table body, and the driving conical wheel is positioned on the inner side of the conical roller in the axial direction of the wheel pair; and the conical drum can be pressed against and position the wheels on the corresponding sides along the axial direction of the wheel pair, and the driving conical wheel is driven to rotate by a driving part arranged in the supporting table body so as to drive the wheels on the corresponding sides to rotate.

Preferably, the rotation axes of the driving conical wheel and the conical drum are both arranged in a shape that the tops of the driving conical wheel and the conical drum are inclined inwards.

Preferably, a vehicle speed measuring coded disc is further arranged on the supporting table body beside the conical drum, and a speed measuring wheel of the vehicle speed measuring coded disc can be in contact with a pedal of a wheel to be measured so as to measure the rotating speed of the wheel.

Preferably, the locking wrench is arranged below the conical drum, the locking wrench is hinged to the top of the supporting table body, the rotation center of the conical drum is eccentrically arranged relative to the hinge center of the locking wrench, and the conical drum is driven to press and position the wheels on the corresponding side through rotation of the locking wrench.

Preferably, the locking wrench comprises: the deflection body is hinged with the top of the supporting table body on a first hinge central line so as to drive the conical roller to press and position the wheel on the corresponding side; a wrench hinged to a second hinge centerline on one side of the deflection body to switch between an operating position and a non-operating position with respect to the deflection body, and configured to: the wrench lifted relative to the deflection body is rotated and is in a non-working position; rotating the depressed wrench relative to the deflection body to a working position; the upper surface of the limiting part is provided with a plurality of limiting clamping grooves which are arranged at intervals and are configured to be capable of clamping and limiting the lower edge of the wrench in the working position; a resilient member disposed between the deflection body and a lateral surface of the wrench and configured to: when the spanner is switched to the working position, the elastic piece deforms.

Preferably, the method further comprises the following steps: and the upper loading rocker arm is arranged on the stand columns on two sides of the supporting platform body and is provided with a vertical actuator so as to apply acting force to the wheel pair to be tested.

Preferably, one end of the upper loading rocker arm is pivoted with the top of the first upright column positioned on one side, and the other end face of the upper loading rocker arm is provided with a slotted hole and is fixedly connected with the second upright column positioned on the other side through a threaded fastener penetrating through the slotted hole.

Aiming at the existing track distance changing wheel pair, the invention innovatively provides a routine test solution. Specifically, two wheel set supporting seats are oppositely arranged along the axial direction of a wheel set to be tested to support a wheel set axle box, and a rail transfer device of the wheel set axle box is arranged between the two wheel set supporting seats; the track-changing actuator of the track-changing device is used for providing track-changing driving force to drive the left wheel supporting table and the right wheel supporting table to slide and displace relative to the guide rail sliding table, so that wheel set track changing is realized; meanwhile, the force measuring device is used for collecting the resistance of the wheel supporting tables on the two sides along the sliding direction in the sliding displacement driven by the rail-changing actuator. So set up, in the orbital transfer test process, can also gather corresponding orbital transfer resistance. The device has simple structure and reasonable design, and can be widely applied to single-wheel pair synchronous track change routine tests of different vehicle types.

In a preferred scheme of the invention, the track transfer device realizes the transfer of the track transfer driving force through a rocker arm hinged to a rocker arm central shaft seat and two rocker arm connecting rods, two side ends of the rocker arm are respectively hinged with output ends of a first track transfer actuator and a second track transfer actuator, and two side end parts of the first rocker arm connecting rod and the second rocker arm connecting rod are respectively hinged to two sides of the rocker arm and the left wheel supporting table and the right wheel supporting table on the corresponding side so as to sequentially transfer the track transfer driving force through the rocker arm and the rocker arm connecting rod on the corresponding side. The overall structure is compact, and the occupied space is small. Furthermore, a second hinge point between the track changing actuator and the rocker arm is positioned at the outer side of a first hinge point between the rocker arm connecting rod on the side and the rocker arm, so that the track changing actuator can complete track changing operation by providing smaller driving torque.

In another preferred scheme of the invention, a hinged pin shaft arranged on a supporting platform body is matched with a rocker arm connecting rod, a driving conical wheel and a conical roller are arranged on the supporting platform body, the driving conical wheel is positioned on the inner side of the conical roller along the axial direction of the wheel pair, and the conical roller can be pressed against and position the wheel on the corresponding side along the axial direction of the wheel pair.

In another preferred embodiment of the present invention, a locking wrench is additionally disposed below the conical roller, the locking wrench is hinged to the top of the supporting table body, and the rotation center of the conical roller is eccentrically disposed with respect to the hinge center of the locking wrench. Has better operability.

In a further preferred scheme of the invention, the upper loading rocker arms are additionally arranged on the upright columns at two sides of the supporting platform body, and the vertical actuators arranged on the upper loading rocker arms can apply acting force to the wheel set to be tested, so that the weight of the simulated vehicle is loaded, the running state of the wheel set of the vehicle on a line is simulated more comprehensively and truly, and the test accuracy is ensured.

Drawings

FIG. 1 is a schematic axial view of a single-wheel-pair orbital transfer test device according to an embodiment;

FIG. 2 is a schematic view of the single-wheel-pair track-changing test device shown in FIG. 1;

FIG. 3 is a schematic view of the wheel-set support pedestal shown in FIG. 1;

fig. 4 is a schematic view of the overall structure of the track transfer device shown in fig. 1;

FIG. 5 is a schematic structural diagram of the track transfer actuator according to an embodiment;

FIG. 6 is a schematic view of the structure of the wheel support table according to the embodiment;

FIG. 7 is a schematic view of the upper loading rocker arm of FIG. 1 in assembled relation with a side stud;

fig. 8 is a schematic structural view of the other side pillar shown in fig. 1.

In the figure:

the wheel set supporting seat 10, the supporting portion 11, the track changing device 20, the guide rail sliding table 21, the left wheel supporting table 22a, the right wheel supporting table 22b, the supporting table body 221, the driving cone wheel 222, the cone drum 223, the hinge pin 224, the vehicle speed measuring code wheel 225, the locking wrench 226, the deflection body 2261, the wrench 2262, the limiting portion 2263, the elastic member 2264, the track changing actuator 23, the position sensor 231, the rocker arm center shaft seat 24, the rocker arm 25, the middle pin 251, the first rocker arm connecting rod 26a, the second rocker arm connecting rod 26b, the force measuring device 261, the first rod section 262, the second rod section 263, the upper loading rocker arm 30, the vertical actuator 31, the slotted hole 32, the first upright 41, the second upright 42, the threaded fastener 43, the wheel set 50, the wheel set axle box 51 and the wheel 52.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the embodiment takes the wheel pair shown in the drawing as a description subject, and describes the track transfer test scheme proposed for the single wheel pair in detail. The wheels on two sides of the wheel pair can be subjected to track transfer adjustment along the wheel shaft, and the axle boxes of the wheel pair are arranged at the axle ends of the two sides of the wheel pair.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic view of an axis measurement of the single-wheel-pair track-changing testing apparatus according to the present embodiment, and fig. 2 is a schematic view of a use state of the single-wheel-pair track-changing testing apparatus.

The single-wheel-pair rail-changing test device comprises two wheel-pair supporting seats 10 which are oppositely arranged along the axial direction of a wheel pair 50 to be tested, please refer to fig. 3, which is a structural schematic diagram of the wheel-pair supporting seats. Each wheel-set support bearing 10 has a support 11 carrying a wheel-set axle box 51 for stable support of the wheel set to be tested. The track transfer device 20 is arranged between the two wheelset supporting seats 10 to perform a track transfer operation.

The rail transfer device 20 includes a fixedly disposed rail sliding table 21, and a left wheel supporting table 22a and a right wheel supporting table 22b symmetrically disposed on the rail sliding table 21, and respectively supporting the wheels 52. It can be understood that the same functional components and structures of the present case are arranged in a symmetrical manner with respect to the wheels on both sides. Here, a rail-changing sliding adapter pair is arranged between the left wheel supporting table 22a and the right wheel supporting table 22b and the guide rail sliding table 21 to drive the wheels to change rails; the construction of the rail-changing sliding adaptation pair can be realized by arranging a sliding rail on one and arranging a matched sliding groove on the other. Based on the arrangement of the rail-changing sliding adapter pair, the left wheel support table 22a can be displaced relative to the rail slide table 21, and similarly, the right wheel support table 22b can also be displaced relative to the rail slide table 21, and the two side wheels 52 correspondingly arranged thereon can be subjected to rail-changing action relative to the wheel axle.

The track-changing device 20 in the present scheme provides a track-changing driving force through the track-changing actuator 23 to drive the left wheel supporting table 22a and the right wheel supporting table 22b to slide and displace relative to the guide rail sliding table 21; the track-changing actuator 23 can be selected from a hydraulic cylinder, an air cylinder or a linear motor to provide the above-mentioned pushing sliding displacement, and it is within the scope of the present application as long as the function requirement can be satisfied. Of course, the hydraulic cylinder is adopted to provide the track-changing driving force, so that the operability is better, and the operation control is convenient.

Meanwhile, the track-changing device 20 is further provided with a force measuring device 261, and during the sliding displacement of the left wheel support table 22a and the right wheel support table 22b driven by the track-changing actuator 23, the resistance in the sliding direction in the process is collected by the force measuring device 261. So set up, in the orbital transfer test process, can also gather corresponding orbital transfer resistance to feedback corresponding test data, when orbital transfer power transfinites, orbital transfer actuator 23 stop motion.

On the basis of meeting the basic track transfer function, the track transfer device can be further optimized for effectively controlling the occupied space of the device. The track transfer device 20 further includes a rocker center shaft seat 24, a rocker 25, and a first rocker link 26a and a second rocker link 26b symmetrically disposed on two sides, please refer to fig. 4, which is a schematic diagram of the overall structure of the track transfer device shown in fig. 1.

The rocker arm center axle seat 24 is disposed between the left and right wheel support tables 22a, 22 b; as shown in the figure, the rocker arm 25 is hinged to the rocker arm central shaft seat 24 through a middle pin shaft 251, and one side of the rocker arm 25 is hinged to the output end of the rail-changing actuator 23; both side end portions of the first rocker link 26a and the second rocker link 26b are respectively hinged to the left wheel support table 22a and the right wheel support table 22b on both sides and corresponding sides of the rocker arm 25 to transmit the derailment driving force output from the derailment actuator 23. The overall structure is compact, and the occupied space is small.

It will be appreciated that the track transfer actuator 23 may be fixedly disposed on a fixed structure, that is, a dedicated fixed structure may be configured for the track transfer actuator 23, and that the fixed structure of the device having other functions may also be utilized, for example, but not limited to, being fixed on a test bed foundation through bolts, or being disposed on a column for carrying an upper loading device.

Specifically, the first hinge point a of the rocker arm 25 adapted to the first rocker link 26a and the second rocker link 26b may be defined, and the two first hinge points a are symmetrically arranged relative to the middle pin 251, so as to achieve synchronous rail transfer of the two side wheels. When the track changing operation is carried out, when the track changing actuator 23 extends out linearly and pushes the rocker arm 25 to rotate relative to the rocker arm central shaft seat 24, the wheel bearing tables (the left wheel bearing table 22a and the right wheel bearing table 22b) on the corresponding sides are driven to displace relative to the guide rail sliding table 21 in the opposite direction through the first rocker arm connecting rod 26a and the second rocker arm connecting rod 26b respectively, and then the wheels 52 on the two sides arranged on the wheel bearing tables are driven to synchronously displace relative to each other along the wheel axle, so that the wheel track is reduced; when the track-changing actuator 23 retracts linearly and pulls the rocker arm 25 to rotate relative to the rocker arm central shaft seat 24, and the wheel bearing tables (the left wheel bearing table 22a and the right wheel bearing table 22b) on the corresponding sides are driven to displace reversely relative to the guide rail sliding table 21 through the first rocker arm connecting rod 26a and the second rocker arm connecting rod 26b respectively, so that the wheels 52 on the two sides arranged on the wheel bearing tables are driven to synchronously displace reversely along the wheel shaft, and the wheel track is increased.

In the scheme, the corresponding hinge relation can be established by selecting the pin shaft as required. Meanwhile, a hinge point between the track changing actuator 23 and the rocker arm 25 may be defined as a second hinge point B, where the second hinge point B is located at an outer end of the first hinge point a on the side. That is, the urging position of the track-changing operation is located outside the transmission position with respect to the rotational center (the center pin 251), and thus the track-changing actuator 23 can complete the track-changing operation with only a small driving torque.

The force measuring device 261 for acquiring the rail-changing force may be configured in different ways as long as the resistance along the sliding direction in the rail-changing process can be acquired. Preferably, the first and second rocker links 26a, 26b are each two-piece links: the first rod section 262 and the second rod section 263 and the force measuring device 261 arranged between the two connecting rods (the first rod section 262 and the second rod section 263) are formed, and the rail changing force of the corresponding side is directly acquired in the process of driving the wheel bearing tables (the left wheel supporting table 22a and the right wheel supporting table 22b) of the corresponding side to displace relative to the guide rail sliding table 21. The structure is simple and reasonable.

In addition, the track-changing actuator 23 in the present embodiment is integrally configured with a position sensor 231 to obtain the working stroke of the corresponding track-changing actuator 23. Specifically, referring to fig. 4 and fig. 5 together, fig. 5 is a schematic structural diagram of the track-changing actuator. So set up, this becomes rail actuator 23 can adopt displacement control, and position sensor 231 makes become rail actuator 23 extend or shorten according to the instruction through carrying out the comparison with the target displacement in spreading into the displacement signal of gathering into control system to the motion of control actuator.

As described above, the left and right wheel support bases 22a and 22b have a symmetrical structure. Each wheel support platform can adopt such a design, and specifically comprises a support platform body 221, and a driving conical wheel 222 and a conical drum 223 which are arranged on the corresponding support platform body 221, see fig. 6 which is a structural schematic diagram of one side wheel support platform.

As shown in the figure, the supporting table body 221 is provided with a hinge pin 224 adapted to the rocker links (the first rocker link 26a and the second rocker link 26 b); preferably, the first and second rocker links 26a, 26b are each adapted to a respective side hinge pin 224 by means of a ball joint. Wherein the driving conical wheel 222 is positioned at the inner side of the conical roller 223 along the axial direction of the wheel pair; the conical roller 223 can be pressed against and position the wheel 52 on the corresponding side along the axial direction of the wheel pair, so that the positioning and the attachment between the wheel and the driving conical wheel 222 on the corresponding side are ensured; the driving cone wheel 222 is driven by a driving component (not shown in the drawings, such as but not limited to a driving motor) disposed inside the supporting table body 221 to rotate the wheel 52 on the corresponding side. Theoretically, the wheel moves inward when the eccentric conical drum 223 applies force to the wheel, and moves outward when the conical drum 223 applies force to the wheel. In the actual test process, the wheel pair rotates under the driving of the driving part, and the running state of the wheel pair on a line can be simulated more accurately.

Preferably, the rotation axes of the driving cone 222 and the cone drum 223 are both inclined inward at the top, that is, the tops of the driving cone 222 and the cone drum 223 are inclined inward and opposite to each other. Further, a vehicle speed measuring code wheel 225 is provided on the support table body 222 beside the conical drum 223, and a tachometer wheel of the vehicle speed measuring code wheel 225 can contact with a pedal of the wheel 52 to be measured to measure the wheel speed.

To further improve the operability of the test apparatus, an eccentric locking wrench 226 placed under the conical roller 223 can be used to press the conical roller 223 against the wheel 52 positioned on the corresponding side. As shown in fig. 6, the locking wrench 226 is hinged to the top of the supporting platform body 221 on the corresponding side, and the rotation center of the conical roller 223 is eccentrically disposed with respect to the locking wrench 226 and the hinge center of the supporting platform body 221, that is, the two rotation center lines are parallel and do not overlap to establish the eccentric relationship, so that the rotation of the locking wrench 226 drives the conical roller 223 to press against the wheel 52 on the corresponding side. In practical use, the operator operates the locking wrench 226 to rotate, so as to drive the conical roller 223 to press against the wheel on the corresponding side based on the eccentric position relationship.

Of course, the wheel sets of different vehicle models have different size parameters, and the structure of the locking wrench 226 can be further optimized to improve the adaptability. As shown in fig. 6, the locking wrench 226 includes a deflecting body 2261, a wrench 2262, a limiting part 2263 and an elastic member 2264, wherein the deflecting body 2261 is hinged to the top of the supporting table body 221 through a first hinge center line to drive the conical roller 223 to press against the wheel 52 located on the corresponding side; the wrench 2262 is hinged to the second hinge centerline with one side of the deflection body 2261 to be switched between an operating position and a non-operating position with respect to the deflection body 2261, and is configured to: the raised wrench 2262 is rotated relative to the deflecting body 2261, in the rest position; the depressed wrench 2262 is rotated relative to the deflecting body 2261, in the working position. A limiting part 2263 adapted to the wrench 2262, wherein the upper surface of the limiting part is provided with a plurality of limiting clamping grooves arranged at intervals and configured to clamp and limit the lower edge of the wrench 2263 in the working position, and the plurality of limiting clamping grooves are respectively adapted to the wrench 2263 rotated to the corresponding working position; corresponding to the different rotational positions, a resilient member 2264 is provided between the lateral surfaces of the deflection body 2261 and the wrench 2262 and is configured to: when the wrench 2262 is switched to the working position, the elastic member 2264 deforms to further limit the wrench 2262 in the corresponding limiting slot, so as to ensure that the wrench 2262 is in a stable setting state.

In addition, the single-wheel pair track-changing test device provided by the scheme can be further additionally provided with an upper loading rocker arm 30. Fig. 7 and 8 are combined to show, wherein fig. 7 is a schematic view of an assembly relationship between the upper loading rocker arm shown in fig. 1 and the upright on one side, and fig. 8 is a schematic view of a structure of the upright on the other side shown in fig. 1.

The upper loading rocker 30 is arranged on the upright columns (41, 42) on both sides of the supporting table body 221, and the upper loading rocker 30 is provided with a vertical actuator 31 for applying acting force to the wheel pair to be tested. It will be appreciated that the upper loading rocker arm 30 and the two side uprights (41, 42) are arranged axially symmetrically with respect to the wheel sets, as shown, to apply force to the wheel sets to be tested on the respective sides, thereby loading the simulated vehicle weight and more fully and realistically simulating the running state of the vehicle wheel sets on the track.

Here, in order to further facilitate the installation of the wheel pair to be tested, as shown in fig. 7, one end of the upper loading rocker 30 is pivotally connected to the top of the first upright 41 on one side, and the other end of the upper loading rocker 30 is provided with a slot 32 and is fixedly connected to the second upright 42 on the other side by a threaded fastener 43 passing through the slot 32, as shown in fig. 8.

The working principle of the single-wheel-pair orbital transfer test device provided by the embodiment is briefly explained as follows:

firstly, mounting the wheel pair to be tested.

First, the threaded fastener 43 is loosened and the upper loading rocker 30 disengages from the second upright 42, pivoting about the first upright to open. The wheel set 50 is placed on the synchronous transfer device by means of a crown block, wherein the wheel set axle box 51 is dropped onto the wheel set support base 10, the upper loading rocker arm 30 is rotated until closed, and the threaded fastener 43 is snapped into the slot 32 of the corresponding side and screwed in place. Next, the locking wrench 226 is operated to clamp the wheel by the outer conical roller 223, whereby the driving cone 222, whose inner side is connected to the motor, drives the wheel pair to be measured to rotate by friction.

And II, a test method.

Starting a driving motor, and driving the wheel pair to be detected to rotate by driving the conical wheel 222 to rotate and rub; meanwhile, the tachometer wheel on the vehicle speed measuring code wheel 225 is in contact with the tread of the wheel to be measured, so that the running speed of the wheel set can be measured in real time.

The control system outputs an instruction to control the orbital transfer actuator 23 to extend or retract, transmits the collected displacement signal into the control system through the displacement sensor 231, and makes the actuator extend or shorten through comparing with the target displacement, thereby controlling the actuator to move to the target position; and simultaneously, the force measuring device 261 is utilized to measure the resistance along the movement direction in the movement process.

In addition, the loading of the vertical actuator 31 can be controlled to simulate the weight of the vehicle, and then the motor drives the friction of the inner side driving conical wheel 222 to drive the wheel to rotate; when the fixed speed is reached, the track transfer actuator 23 is extended and shortened, so that the track transfer of the wheel is realized. And finishing the whole track transfer process.

It should be noted that the working principle of the sensor, the measurer and the actuator related to the testing apparatus is not the core invention point of the present application, and a person skilled in the art can implement the working principle by using the prior art, so that the description is omitted here.

In the description of the present invention, the terms "axial", "top surface" and "bottom surface" and the like indicate orientations or positional relationships that are defined based on a general reference for a wheel set, and are used only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the present invention.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (12)

1. Single round is to becoming rail test device, its characterized in that includes:

the device comprises two wheel set supporting seats, a testing device and a testing device, wherein the two wheel set supporting seats are oppositely arranged along the axial direction of a wheel set to be tested, and each wheel set supporting seat is provided with a supporting part for supporting a wheel set axle box;

the rail transfer device is arranged between the two wheel pair supporting seats;

wherein, the device of becoming rail includes:

a guide rail sliding table is fixedly arranged;

the left wheel supporting table and the right wheel supporting table are symmetrically arranged on the guide rail sliding table and are respectively used for supporting wheels; and a rail-changing sliding adaptation pair is arranged between the left wheel supporting table and the guide rail sliding table and between the right wheel supporting table and the guide rail sliding table so as to drive wheels to change rails;

the rail transfer actuator is used for providing rail transfer driving force so as to drive the left wheel supporting table and the right wheel supporting table to slide and displace relative to the guide rail sliding table;

and the force measuring device is used for driving the left wheel supporting table and the right wheel supporting table to slide and displace along the resistance in the sliding direction by the rail transfer actuator.

2. The single-wheel-pair orbital transfer test device of claim 1, further comprising:

the rocker arm central shaft seat is arranged between the left wheel supporting table and the right wheel supporting table;

the rocker arm is hinged to the rocker arm central shaft seat through a middle pin shaft, and one side of the rocker arm is hinged to the output end of the rail-changing actuator;

and the two side end parts of the first rocker arm connecting rod and the second rocker arm connecting rod are respectively hinged to the left wheel supporting table and the right wheel supporting table on two sides and corresponding sides of the rocker arms so as to transmit the rail transfer driving force.

3. The single-wheel-pair rail transfer test device according to claim 2, wherein a first hinge point on the rocker arm, which is matched with the first rocker arm connecting rod and the second rocker arm connecting rod, is symmetrically arranged relative to the middle pin shaft; and the second hinge point of the track changing actuator and the rocker arm is positioned at the outer end of the first hinge point on the side.

4. The single-wheel-pair derailment test device of claim 3, wherein the first rocker link and the second rocker link are each comprised of two segments of links and a force-measuring device disposed between the two segments of links.

5. The single-wheel-pair rail-changing test device as claimed in claim 4, wherein the rail-changing actuators are integrally configured with position sensors to obtain the working strokes of the respective rail-changing actuators.

6. The single-wheel-pair rail transfer test device according to any one of claims 1 to 5, wherein the left and right wheel supporting tables are of a symmetrical structure and each include:

the supporting table body is provided with a hinge pin shaft matched with the rocker arm connecting rod;

the driving conical wheel and the conical roller are arranged on the corresponding supporting table body, and the driving conical wheel is positioned on the inner side of the conical roller in the axial direction of the wheel pair; and the conical drum can be pressed against and position the wheels on the corresponding sides along the axial direction of the wheel pair, and the driving conical wheel is driven to rotate by a driving part arranged in the supporting table body so as to drive the wheels on the corresponding sides to rotate.

7. The single-wheel-pair rail-changing test device according to claim 6, wherein the rotation axes of the driving cone wheel and the cone drum are both arranged with the tops inclined inwards.

8. The single-wheel-pair rail-changing test device according to claim 7, wherein a vehicle speed measuring coded disc is further arranged on the supporting table body beside the conical roller, and a speed measuring wheel of the vehicle speed measuring coded disc can be in contact with a pedal of a wheel to be measured so as to measure the rotating speed of the wheel.

9. The single-wheel-pair rail transfer test device according to claim 6, further comprising a locking wrench disposed below the conical roller, wherein the locking wrench is hinged to the top of the supporting table body, and the rotation center of the conical roller is eccentrically disposed with respect to the hinge center of the locking wrench, so that the conical roller is driven to press against the wheel positioned on the corresponding side by the rotation of the locking wrench.

10. The single-wheel-pair rail transfer test device of claim 9, wherein the locking wrench comprises:

the deflection body is hinged with the top of the supporting table body on a first hinge central line so as to drive the conical roller to press and position the wheel on the corresponding side;

a wrench hinged to a second hinge centerline on one side of the deflection body to switch between an operating position and a non-operating position with respect to the deflection body, and configured to: the wrench lifted relative to the deflection body is rotated and is in a non-working position; rotating the depressed wrench relative to the deflection body to a working position;

the upper surface of the limiting part is provided with a plurality of limiting clamping grooves which are arranged at intervals and are configured to be capable of clamping and limiting the lower edge of the wrench in the working position;

a resilient member disposed between the deflection body and a lateral surface of the wrench and configured to: when the spanner is switched to the working position, the elastic piece deforms.

11. The single-wheel-pair orbital transfer test device of claim 10, further comprising:

and the upper loading rocker arm is arranged on the stand columns on two sides of the supporting platform body and is provided with a vertical actuator so as to apply acting force to the wheel pair to be tested.

12. The single-wheel-pair orbital transfer test device of claim 11, wherein one end of the upper loading rocker arm is pivotally connected to the top of the first upright on one side, and the other end of the upper loading rocker arm is provided with a slotted hole and is fixedly connected to the second upright on the other side by a threaded fastener penetrating through the slotted hole.

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