CN215338232U - System for dynamically detecting radial runout of wheel on line - Google Patents

Abstract

The utility model discloses a system for dynamically detecting wheel radial runout on line, and belongs to the technical field of rail transit. The utility model discloses a system for dynamically detecting wheel radial runout on line, which comprises a preposed mechanism and a detection mechanism which are sequentially arranged on the inner side of a track along the warehousing direction of a train, wherein the detection mechanism comprises a pedal, a sliding plate, a fixed plate assembly and a pedal balance mechanism which are arranged on the inner side of the track and are parallel to each other, the sliding plate, the pedal and the fixed plate assembly are connected through a sliding rail mechanism, the sliding plate is connected with a lifting driving mechanism, and an elastic element is connected between the sliding plate and the pedal; the pedal is connected with the pedal balancing mechanism. By adopting the technical scheme of the utility model, the real-time dynamic detection of the radial runout of the wheel tread of the train can be realized, and the detection precision and the structural stability of the detection device are effectively improved compared with the existing detection mechanism.

Description

System for dynamically detecting radial runout of wheel on line

Technical Field

The utility model belongs to the technical field of rail transit, and particularly relates to a system for dynamically detecting wheel radial runout on line.

Background

At present, during train running, the wheel set slides on the track due to poor line maintenance conditions, unreasonable matching of the appearance and the material of a wheel rail, poor technical state of a bogie, overlarge towing and loading fixed number, uneven or overlarge brake force of wheels and brake shoes, unreleased or overlarge brake force during train braking, or overlarge brake force during empty parking due to long-term rolling of the wheel set on the track, missing or misadjustment of an empty and heavy vehicle adjusting device, braking of iron shoes during shunting operation, low operating level of locomotive drivers, poor vehicle relieving and other reasons, so that the tread of the wheels of the train has more faults, such as scratching, stripping and the like, and the rolling circle of the tread is in a shape of cord lack (flat). In addition, the high-speed, heavy-load and high-density running of the train accelerates the abrasion of wheel sets, so that wheel treads and wheel rims are abraded, the geometric shapes of the wheels are changed, the diameters of the wheels are reduced, the wheels are out of round, the safety and the service life of the train and a rail facility are seriously affected, and even the driving safety is affected.

At present, most of the detection of wheel set tread radial runout and other tread defects in China still stays in a section repair state, and technical personnel adopt mechanical calipers or measuring scales to measure, and the measurement by adopting the mechanical instruments is not only troublesome in work and high in labor intensity and greatly influenced by the surrounding environment, but also cannot eliminate artificial measurement errors, so that the measurement precision is low, and the measurement efficiency is not high. The on-line dynamic detection refers to real-time on-line measurement performed when a train normally runs on a steel rail, and the on-line detection is increasingly paid attention at home and abroad due to the characteristics of high measurement automation degree, no occupation of the turnover time of rolling stock, convenience in storing wheel information data and the like.

The current on-line dynamic detection methods mainly comprise a vibration acceleration detection method and a contact measurement method. The vibration acceleration detection method extracts out-of-roundness information of wheels by analyzing the acquired vibration condition of a track when an entire train passes through a detection point, but the method is influenced by a sensor mounting clamp and sleeper vibration attenuation, and the measurement accuracy is not high. The contact measurement method is typically a parallelogram method, such as application No. 200720082608.9, entitled: over-and-under type wheel tread is inserted and is hindered and online dynamic detection device of out-of-roundness to and application number is 201210307496.8, utility model creation name: the application of the device for online detecting the inserting wound and the out-of-roundness of the wheel tread discloses an online measuring method of a parallelogram structure and improvement thereof, wherein a displacement sensor in the application is connected with a support fixed on a steel rail forming one side of the parallelogram mechanism, the sensor can directly measure the variation of the relative height of the wheel tread and a wheel rim, the displacement sensor records the diameter condition of the circumference of the whole tread, and the sensor outputs a curve when the tread is out-of-round, so that the out-of-roundness is obtained.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome the problems of tread defects such as radial runout of the tread of the existing train wheel and the like, and provides a system for dynamically detecting the radial runout of the wheel on line. By adopting the technical scheme of the utility model, the real-time dynamic detection of the radial runout of the wheel tread of the train can be realized, and the detection precision and the structural stability of the detection device are effectively improved compared with the existing detection mechanism.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model discloses a system for dynamically detecting wheel radial runout on line, which comprises a front-end mechanism and a detection mechanism, wherein the front-end mechanism and the detection mechanism are sequentially arranged on the inner side of a track along the warehousing direction of a train, the front-end mechanism is used for detecting the rim height of a wheel to be detected, the detection mechanism is used for detecting the wheel radial runout, the detection mechanism comprises a pedal, a sliding plate, a fixed plate assembly and a pedal balance mechanism, the pedal, the sliding plate, the pedal and the fixed plate assembly are arranged on the inner side of the track and are parallel to each other, the sliding plate, the pedal and the fixed plate assembly are connected through a sliding rail mechanism, the sliding plate is connected with a lifting driving mechanism, and an elastic element is connected between the sliding plate and the pedal; the pedal is connected with the pedal balancing mechanism.

Furthermore, the pedal balance mechanism comprises a swing arm, a slider fixing plate and a guide rail seat, wherein the slider fixing plate is slidably mounted on the guide rail seat through a slide rail mechanism, and two ends of the swing arm are respectively connected with the slider fixing plate and the pedal in a rotating manner.

Furthermore, the slide rail mechanism between the slide block fixing plate and the guide rail seat comprises a second guide rail arranged on the guide rail seat and a second slide block arranged on the slide block fixing plate.

Furthermore, the guide rail seat is processed into an L-shaped structure, the second guide rail is installed on a bottom plate of the guide rail seat, a guide rail seat reinforcing plate is fixedly arranged on the side face of the guide rail seat, and a limiting convex edge and a limiting groove which are matched with each other are respectively arranged on the guide rail seat and the guide rail seat reinforcing plate.

Furthermore, the detection mechanisms are symmetrically arranged on the inner sides of the tracks at the two sides, and the number of the detection mechanisms at the same side is more than or equal to 2; the front of the front-end mechanism is also provided with a trigger mechanism, and the trigger mechanism comprises a first magnetic steel and a second magnetic steel which are arranged at intervals along the inner side of the unilateral track.

Furthermore, the fixing plate assembly and the pedal balancing mechanism are both fixedly mounted on the bottom plate assembly, and the bottom plate assembly is fixedly mounted at the bottom of the track.

Furthermore, two ends of the sliding plate are respectively provided with a guide post and guide sleeve mechanism, the guide post and guide sleeve mechanism comprises a guide post, a guide sleeve and a base, the guide sleeve is fixedly arranged on the upper part of the sliding plate, the base is fixedly arranged on the bottom plate assembly, and the guide post penetrates through the guide sleeve and is fixedly connected with the base; and a lining is also arranged between the guide sleeve and the guide pillar, and balls are arranged on the lining.

Furthermore, the sliding plate is connected with the lifting driving mechanism through a swing rod transmission mechanism, the swing rod transmission mechanism comprises an upper sliding block fixing plate, a swing rod and a lower sliding block fixing plate, two ends of the swing rod are respectively connected with the upper sliding block fixing plate and the lower sliding block fixing plate in a rotating mode and form a parallelogram mechanism, the upper sliding block fixing plate is fixedly connected with the sliding plate, and the lower sliding block fixing plate is connected with the lifting driving mechanism in a driving mode.

Furthermore, the lower sliding block fixing plate is connected with the bottom plate assembly in a sliding manner through a sliding rail mechanism, and the sliding rail mechanism comprises a first sliding block arranged on the lower sliding block fixing plate and a first guide rail arranged on the bottom plate assembly and matched with the first sliding block.

Furthermore, the fixing plate assembly comprises a main fixing plate, end fixing plates positioned at two ends of the main fixing plate and an upper sealing plate positioned at the top of the main fixing plate, wherein the main fixing plate, the end fixing plates and the upper sealing plate surround together to form a box-type structure; furthermore, an intermediate fixed plate is arranged between the pedal and the sliding plate, wherein a sliding rail mechanism between the sliding plate and the pedal is obliquely arranged relative to the sliding plate, and a sliding rail mechanism between the sliding plate and the fixed plate assembly is vertically arranged relative to the sliding plate; and a displacement sensing plate is fixed on the pedal, and a fixedly installed displacement sensor is correspondingly arranged above or below the displacement sensing plate.

Furthermore, the structure of the front-end mechanism is the same as that of the detection mechanism, and the upper surface of the pedal of the front-end mechanism sequentially comprises an ascending section, a horizontal section and a descending section along the warehousing direction of the train.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following remarkable effects:

(1) the utility model discloses a system for dynamically detecting wheel radial run-out on line, which comprises a front-end mechanism and a detection mechanism which are sequentially arranged on the inner side of a track along the warehousing direction of a train, wherein the front-end mechanism is used for detecting the rim height of a train wheel to be detected and feeding back the rim height to a control system, and the control system is used for controlling and adjusting the initial height of the detection mechanism, so that the detection requirements of wheels with different rim heights can be met, the detection mechanism is prevented from being greatly impacted when the wheels quickly impact the detection mechanism, the service life of the mechanism is prolonged, the influence of impact vibration on the detection precision is reduced, and the measurement precision is favorably ensured.

(2) The utility model relates to a system for dynamically detecting the radial runout of a wheel on line, wherein a detection mechanism comprises a pedal, a sliding plate and a fixed plate assembly which are arranged on the inner side of a track and are parallel to each other, the sliding plate is connected with a lifting driving mechanism, when the wheel presses the surface of the pedal, the pedal moves downwards relative to the sliding plate along a sliding rail mechanism, at the moment, the sliding plate and the fixed plate assembly keep relatively static, and the radial runout of a train wheel tread can be dynamically measured on line through the change of the downward movement of the pedal relative to the sliding plate in the whole tread circumference range when the train wheel runs, so that the measurement efficiency is greatly improved, and the measurement precision and the structural stability of the whole measuring device are obviously improved compared with the existing parallelogram measuring mechanism.

(3) According to the system for dynamically detecting the radial runout of the wheel on line, the elastic element is connected between the sliding plate and the pedal, and the pedal can automatically return to the initial position when the wheel leaves under the action of the restoring force of the elastic element. Meanwhile, the sliding plate is connected with the lifting driving mechanism, and the lifting driving mechanism drives the sliding plate to move up and down before the train arrives, so that the pedal and the sliding plate can be synchronously lifted and lowered under the action of the elastic element, the initial height of the pedal can be adjusted, the measurement requirements of wheels with different wheel rim heights can be met, the wheels can be prevented from causing large impact on the pedal, and the measurement precision can be guaranteed.

(4) According to the system for dynamically detecting the radial runout of the wheel on line, the pedal is connected with the pedal balancing mechanism, the pedal balancing mechanism is of a parallelogram swing arm structure, the pedal can be effectively prevented from inclining after the wheel presses the pedal through the arrangement of the pedal balancing mechanism, the surface of the pedal is kept on the same level all the time, and the detection precision is further ensured.

(5) According to the system for dynamically detecting the radial runout of the wheel on line, the triggering mechanism is further arranged at the front end of the front-end mechanism on the inner side of the track and comprises first magnetic steel and second magnetic steel which are arranged at intervals on the inner side of the track, and warehousing-in and warehousing-out of the train can be judged according to the triggering sequence of the first magnetic steel and the second magnetic steel, so that whether the front-end mechanism and the detection mechanism are started or not can be conveniently determined. In addition, the running speed of the train can be measured through the arrangement of the first magnetic steel and the second magnetic steel. The detection mechanisms are symmetrically arranged on the inner sides of the rails on the two sides, the number of the detection mechanisms on the same side is more than or equal to 2, the detection requirements of front and rear different wheels can be met by adopting the design based on the requirement of the detection of the whole tread circumference of the wheel, and the influence of the fact that the front wheel does not leave the detection mechanism and the rear wheel enters the detection mechanism on the detection result is prevented.

(6) The utility model discloses a system for dynamically detecting the radial runout of a wheel on line, wherein a pedal balancing mechanism comprises a swing arm, a slide block fixing plate and a guide rail seat, when the wheel presses a pedal, the swing arm is pressed down in the downward movement process of the pedal so as to drive the slide block fixing plate to horizontally move along the guide rail, the swing arm, the slide block fixing plate and the pedal form a parallelogram structure, and the surface of the pedal is effectively prevented from inclining under the action of the parallelogram structure.

(7) According to the system for dynamically detecting the radial runout of the wheel on line, the guide rail seat is processed into an L-shaped structure, the second guide rail is arranged on the bottom plate of the guide rail seat, the side face of the guide rail seat is fixedly provided with the guide rail seat reinforcing plate, and the guide rail seat reinforcing plate are respectively provided with the limiting convex edge and the limiting groove which are matched with each other, so that the deformation of the guide rail seat generated when the guide rail seat is stressed is reduced to the minimum, and the rigidity and the strength of the whole structure are improved.

(8) According to the system for dynamically detecting the radial runout of the wheel on line, the guide post and guide sleeve mechanisms are arranged at the two ends of the sliding plate, and the movement of the sliding plate can be guided through the guide post and guide sleeve mechanisms, so that the sliding plate can only generate displacement along the direction of the guide post and guide sleeve mechanisms, the sliding plate is prevented from moving downwards along with the guide post and guide sleeve mechanisms when a wheel presses a pedal, and the accuracy of a detection result is improved. In addition, a lining is arranged between the guide sleeve and the guide column of the guide column and guide sleeve mechanism, and balls are arranged on the lining, so that the full play of the function of the guide column and guide sleeve mechanism is further guaranteed, and the sliding plate is prevented from moving downwards along with the pedal in the detection process.

(9) According to the system for dynamically detecting the radial runout of the wheel on line, the sliding plate is connected with the lifting driving mechanism through the swing rod transmission mechanism, the swing rod transmission mechanism comprises the upper sliding block fixing plate, the swing rod and the lower sliding block fixing plate, and the driving mechanism is used for driving the lower sliding block fixing plate to move left and right along the horizontal direction through the arrangement of the swing rod transmission mechanism, so that the lifting movement of the sliding plate along the vertical direction can be realized, the stability of the lifting movement of the sliding plate is ensured, the sliding plate is effectively prevented from inclining when the wheel presses the pedal, the installation space of the driving mechanism can be effectively saved, and the horizontal movement at the output end of the driving mechanism is directly converted into the lifting movement of the sliding plate.

(10) The utility model discloses a system for dynamically detecting wheel radial runout on line, wherein a fixed plate assembly comprises a main fixed plate, end fixed plates positioned at two ends of the main fixed plate and an upper sealing plate positioned at the top of the main fixed plate, and the main fixed plate, the end fixed plates and the upper sealing plate surround together to form a box-type structure, so that the structural strength and stability of the whole detection device and the stability of relative movement between a sliding plate and a pedal as well as between the sliding plate and the fixed plate assembly can be further improved. An intermediate fixing plate is arranged between the sliding plate and the pedal, so that the structural stability of the device is further improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the detecting mechanism of the present invention;

FIG. 2 is a schematic view of the mounting structure of the fixing plate assembly of the present invention;

FIG. 3 is a schematic diagram (I) of the disassembled structure of the detecting mechanism of the present invention;

FIG. 4 is a schematic diagram (II) of the disassembled structure of the detecting mechanism of the present invention;

FIG. 5 is a schematic structural view of the sliding plate lifting driving and transmission mechanism of the present invention;

FIG. 6 is a schematic structural diagram of a floor assembly according to the present invention;

FIG. 7 is a schematic view of the installation structure of the lift driving mechanism of the present invention;

FIG. 8 is a schematic view of the mounting structure of the swing link transmission mechanism of the present invention;

FIG. 9 is a schematic view of the mounting structure of the pedal balancing mechanism of the present invention;

FIG. 10 is a schematic view (one) of the pedal balancing mechanism of the present invention;

FIG. 11 is a schematic view of the pedal balancing mechanism of the present invention in a disassembled configuration (II);

FIG. 12 is a schematic structural view of the guide post and guide sleeve mechanism of the present invention;

FIG. 13 is a schematic structural view of a helical tension spring according to the present invention;

FIG. 14 is a schematic structural view of the spring pin of the present invention;

FIG. 15 is a plan view of the installation of the system for on-line dynamic detection of wheel runout of the present invention;

FIG. 16 is a schematic structural view of a front-end mechanism pedal of the present invention;

FIG. 17 is a control schematic of the method of the present invention for on-line dynamic detection of wheel runout.

The reference numerals in the schematic drawings illustrate:

1. a track; 2. a pedal; 201. an uphill segment; 202. a horizontal segment; 203. a downhill section; 3. a sliding plate; 4. a fixed plate assembly; 401. a main fixing plate; 402. an end fixing plate; 403. an upper sealing plate; 404. a middle fixing plate; 5. a floor assembly; 501. a bottom support plate; 502. a first track platen; 503. a platen bolt; 504. a platen nut; 505. a draw bar bolt; 506. fixing the ear; 507. reinforcing ribs; 508. a second track press plate; 6. a lifting drive mechanism; 601. a drive motor; 602. a motor mounting seat; 603. a lead screw; 604. a lead screw nut; 605. a lead screw fixing seat; 701. a first slide rail; 702. a second slide rail; 703. a third slide rail; 704. a fourth slide rail; 8. an elastic element; 801. an elastic element support; 802. an elastic element adjusting plate; 803. an elastic element support plate; 804. a spring pin; 805. hooking a groove; 901. a displacement sensor; 902. a sensor mount; 903. a displacement sensing plate; 10. a swing rod transmission mechanism; 1001. an upper slide block fixing plate; 1002. a swing rod; 1003. a lower slider fixing plate; 1004. a first slider; 1005. a first guide rail; 1006; a nut connecting rod; 11. an electromagnetic brake; 12. a guide post and guide sleeve mechanism; 1201. a guide post; 1202. a guide sleeve; 1203. a base; 1204. a liner; 13. a pedal balancing mechanism; 1301. a bearing pin; 1302. swinging arms; 1303. a slider fixing plate; 1304. a second guide rail; 1305. a guide rail seat; 1306. a second slider; 1307. a rail seat reinforcing plate; 1308. a limiting convex rib; 1401. a first magnetic steel; 1402. a second magnetic steel; 15. a front-end mechanism; 1601. a first detection mechanism; 1602. a second detection mechanism; 1603. a third detection mechanism; 1604. and a fourth detection mechanism.

Detailed Description

For a further understanding of the utility model, reference will now be made in detail to the embodiments illustrated in the drawings.

Example 1

As shown in fig. 15, the system for dynamically detecting wheel runout on line according to this embodiment includes a front-end mechanism 15 and a detection mechanism, which are sequentially installed on the inner side of a track along the warehousing direction of a train, where the front-end mechanism 15 is used to detect the rim height of a wheel to be detected, and the detection mechanism is used to detect wheel runout. The detection mechanism and the front-end mechanism 15 are connected with the control system in a control mode, and the control system controls the start and stop of the front-end mechanism 15 and the detection mechanism.

The embodiment adds the front-end mechanism in front of the detection mechanism (the direction of train entering a garage), measures the rim height of the wheel to be detected through the front-end mechanism 15, controls the lifting driving mechanism 6 to operate through the control system according to the measured rim height and the current position of the detection mechanism, and adjusts the initial height of the detection mechanism, so as to ensure that the prepressing amount of the detection mechanism belongs to the set range, further reduce the impact force on the detection mechanism when the wheel rapidly impacts the detection mechanism, prolong the service life of the mechanism, and reduce the influence of impact vibration on the detection precision. Here, the preload is a magnitude of a vertical displacement of the pedal generated when the wheel presses the pedal of the wheel pressure detecting mechanism. The embodiment does not require the structure of the front-end mechanism, can directly adopt the existing any wheel rim height online detection device, and only needs to detect the rim height of the wheel.

With reference to fig. 1-5, the device comprises a pedal 2, a sliding plate 3 and a fixed plate assembly 4 which are installed inside a track 1 and are parallel to each other, the sliding plate 3 is connected with the pedal 2 and the fixed plate assembly 4 through a sliding rail mechanism, the sliding plate 3 is connected with a lifting driving mechanism 6, and an elastic element 8 is connected between the sliding plate 3 and the pedal 2; the pedal 2 is connected with a pedal balance mechanism 13, and the pedal balance mechanism 13 and the pedal 2 form a parallelogram swing arm structure.

The train wheel comprises a tread part and a rim part, the tread is out of round due to long-term contact and abrasion with the rail, and the rim is still a standard circle without contact with other objects. Therefore, when the wheel tread is in contact with the steel rail at different positions, the distances from the top points of the wheel rims to the top surface of the steel rail are different. According to the tread out-of-round condition of the wheel tread, the tread 2 is installed on the rail, when the wheel passes through, the top surface of the tread 2 is always kept in contact with the top point of the wheel rim, the tread 2 generates downward displacement under the pressing action of the wheel rim, the displacement changes along with the difference of the contact points of the tread and the rail, the change of the displacement of the tread 2 in the process that the wheel passes through the tread 2 is collected, and the out-of-round condition of the wheel tread can be depicted.

In actual use, the wheel rims of all wheels on a train are different in height, the pedal 2 is higher than the wheel rims by a certain value during measurement to serve as prepressing amount, the prepressing amount cannot be too large, otherwise the wheels can seriously impact the pedal 2, the damage to the pedal 2 is caused, and the measurement accuracy is reduced; the pre-pressure must also not be too small, otherwise the wheel rim will not press the pedal 2, resulting in no detectable data. Through the split type structural design of footboard 2, sliding plate 3 and fixed plate assembly 4 in this embodiment, the effect of cooperation lift actuating mechanism 6 simultaneously to both can realize the measurement of wheel tread defect, can adjust the initial height of footboard 2 again simultaneously, thereby satisfy the measurement requirement of the high wheel of different rims, reduce the wheel and cause great impact to footboard 2, and guarantee measurement accuracy. Specifically, before the train arrives, the lifting driving mechanism 6 drives the sliding plate 3 to lift relative to the fixed plate assembly 4 according to the rim height of the train wheel to be measured, and under the action of the elastic element 8, the pedal 2 and the sliding plate 3 lift synchronously, so that the initial height of the pedal assembly 2 is adjusted. When the height of the pedal 2 reaches a set value, the lifting driving mechanism 6 stops working.

After the train wheels press the pedal 2, under the rolling action of the wheels, the pedal 2 moves downwards relative to the sliding plate 3 along the sliding rail mechanism, and at the moment, the sliding plate 3 does not slide relative to the fixed plate assembly 4 under the supporting action of the lifting driving mechanism 6; when the train wheel leaves the pedal 2, the pedal 2 automatically moves upwards along the sliding rail mechanism gradually under the action of restoring force of the elastic element 8 relative to the sliding plate 3, and radial run-out, tread scratch and abrasion data of the train wheel tread can be obtained by processing the pressing displacement data of the pedal 2, so that the on-line dynamic measurement of the train wheel defects is realized, and the measurement efficiency is greatly improved. This embodiment is through carrying out optimal design to detection device's structure, leads to the removal of footboard 2 with the help of slide rail mechanism to make it carry out the motion of replying through elastic element 8's effect, thereby for current parallelogram measuring mechanism, measuring device's structural stability and measurement accuracy have all obtained effective improvement.

Specifically, if the tread surface of the wheel is not scratched, the vertical position of the tread surface relative to the steel rail is unchanged in the whole tread surface circumference, and the pressing displacement of the pedal 2 is kept unchanged; on the contrary, if the tread of the wheel is scratched or unevenly worn, the relative height from the tread to the top of the wheel rim is changed, the vertical position of the pedal 2 and the steel rail is also changed relatively, and the change amount of the vertical height of the pedal 2 is the scratch amount. Meanwhile, the amount of the depression displacement of the pedal 2 is compared with that of a new wheel without abrasion, and the abrasion amount of the wheel tread can be obtained. In this embodiment, a displacement sensing plate 903 is fixed on the pedal 2, a fixedly installed displacement sensor 901 is correspondingly arranged above or below the displacement sensing plate 903, when a wheel presses the pedal 2, the displacement sensing plate 903 is lifted synchronously with the pedal 2, and the displacement sensor 901 is fixed, so that the radial run-out of the wheel tread can be directly obtained through the displacement change between the displacement sensing plate 903 and the displacement sensed by the displacement sensor 901 during the rolling process of the wheel.

But when the wheel pressed the footboard 2 from one side, footboard 2 can cause the slope because of the unilateral atress to influence measuring result, this embodiment passes through the setting of footboard balance mechanism 13, thereby can prevent effectively that the wheel from pressing the footboard 2 back footboard 2 and taking place the slope, was favorable to guaranteeing that footboard 2 surface remains on a level all the time, and then was favorable to guaranteeing detection accuracy.

Example 2

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 1, and the difference is mainly that: with reference to fig. 8-11, the pedal balancing mechanism 13 of the present embodiment includes a swing arm 1302, a slider fixing plate 1303 and a track base 1305, where the slider fixing plate 1303 is slidably mounted on the track base 1305 through a sliding rail mechanism, and two ends of the swing arm 1302 are respectively connected to the slider fixing plate 1303 and the pedal 2 in a rotating manner. Specifically, bearings are respectively installed at two ends of the swing arm 1302, and the slider fixing plate 1303 and the pedal 2 are respectively connected with the swing arm 1302 through a bearing pin 1301 in a rotating manner. The slide rail mechanism between the slider fixing plate 1303 and the rail base 1305 includes a second rail 1304 attached to the rail base 1305, and a second slider 1306 attached to the slider fixing plate 1303. When the wheel presses the pedal 2, the pedal 2 moves downward, and the swing arm 1302 swings downward, so as to push the slider fixing plate 1303 to move horizontally along the second guide rail 1304. The both ends of footboard 2 link to each other with slider fixed plate 1303 through swing arm 1302 respectively in this embodiment, and the length of swing arm is unanimous, and the bearing interval on two swing arms is unanimous to constitute parallelogram pendulum rod structure jointly, during footboard 2 up-and-down motion, this tetragonal height can change, nevertheless can guarantee that footboard 2 is the horizontality all the time, thereby prevents the influence of footboard 2 slope to the testing result.

Example 3

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 2, and the main differences are as follows: as shown in fig. 10, the rail seat 1305 of this embodiment is processed into an L-shaped structure, the second rail 1304 is installed on the bottom plate of the rail seat 1305, the rail seat reinforcing plate 1307 is fixedly disposed on the side surface of the rail seat 1305, and the rail seat 1305 and the rail seat reinforcing plate 1307 are further respectively provided with a limiting convex ridge 1308 and a limiting groove, which are matched with each other, so that deformation of the rail seat generated when the rail seat is stressed can be effectively ensured to be minimized, and the rigidity and strength of the overall structure can be improved.

Example 4

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 3, and the difference is mainly that: the detection mechanisms of the embodiment are symmetrically arranged on the inner sides of the tracks at two sides, the number of the detection mechanisms at the same side is more than or equal to 2, and the sum of the lengths of the detection mechanisms at each side is greater than the circumference of the wheel, so that the circumferential data of the wheel tread, which is greater than the circumference of the wheel, can be detected, the requirements for detection of different front and rear wheels can be met, and the influence of the fact that the front wheel does not leave the detection mechanism and the rear wheel enters the detection mechanism on a detection result is prevented. The first detecting means is kept at a certain distance from the front-end means 15, and the time taken for the wheel to travel the distance can satisfy the time taken for the detecting means to adjust the amount of preload.

In this embodiment, a triggering mechanism is further disposed in front of the front-end mechanism 15, and the triggering mechanism includes a first magnetic steel 1401 and a second magnetic steel 1402 which are disposed at intervals along the inner side of the unilateral rail. The train can be judged to enter or exit according to the triggering sequence of the first magnetic steel 1401 and the second magnetic steel 1402, so that whether the front-end mechanism 15 and the detection mechanism are started or not can be conveniently determined. Specifically, when the triggering sequence of the magnetic steels is a first magnetic steel 1401-a second magnetic steel 1402, the train is put in a warehouse, and the front-end mechanism and the detection mechanism are started to prepare for wheel detection; when the triggering sequence of the magnetic steels is the second magnetic steel 1402-the first magnetic steel 1401, the train is taken out of the warehouse, all detection mechanisms are not started, when the train is taken out of the warehouse, the equipment is not started, the detection mechanisms are in an avoiding state, the wheels are not in contact with the mechanism, the impact force and the friction force between the wheels and the detection mechanisms when the train is taken out of the warehouse are eliminated, the mechanism is protected, and the automatic detection of the equipment is realized. Therefore, the magnetic steel arranged at the front end of the equipment is used as an external trigger signal, so that the equipment can be controlled to start. Meanwhile, the speed of the train can be measured by installing the first magnetic steel 1401 and the second magnetic steel 1402, and when the installation distance is known, the time interval of triggering the two magnetic steels is recorded, so that the speed of the train can be calculated.

Example 5

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 4, and the difference is mainly that: the fixed plate assembly 4 and the pedal balance mechanism 13 are both fixedly installed on the bottom plate assembly 2, and the bottom plate assembly 2 is fixedly installed at the bottom of the track 1.

With reference to fig. 2, 4, 6, and 8, the bottom plate assembly 5 of this embodiment includes a bottom support plate 501, a first rail pressing plate 502 and a second rail pressing plate 508 are disposed on the bottom support plate 501, the first rail pressing plate 502 is fixedly connected to the bottom support plate 501 through a pressing plate bolt 503, and two sides of the bottom of the rail 1 are respectively pressed and fixed between the first rail pressing plate 502, the second rail pressing plate 508, and the bottom support plate 501; the bottom support plate 501 is further provided with a pressing plate nut 504, a seam which is profiled with the side edge of the bottom of the track 1 is processed on the pressing plate nut 504, and the pressing plate nut 504 is fixedly connected with a fixing lug 506 at the bottom of the bottom support plate 501 through a pull rod bolt 505. When the pull rod bolt 505 fastens the pressing plate nut 504 through the fixing lug 506, the nip distance between the pressing plate nut 504 and the second rail pressing plate 508 is reduced, so that the bottom plate assembly 5 and the steel rail are tightly fixed together; the bottom support plate 501 is then further fastened to the rail by the platen bolts 503 and the first rail platen 502. In this embodiment, the two sides of the bottom supporting plate 501 are further provided with reinforcing ribs 507, the bottom supporting plate 501 and the reinforcing ribs 507 are integrated, and a casting or welding mode can be adopted to ensure the integral rigidity of the mechanism so as to meet the requirement of the measurement accuracy of the whole mechanism.

Example 6

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 5, and the differences are mainly as follows: referring to fig. 4, 8 and 12, the two ends of the sliding plate 3 are provided with a guide post and guide sleeve mechanism 12, the guide post and guide sleeve mechanism 12 includes a guide post 1201, a guide sleeve 1202 and a base 1203, wherein the guide sleeve 1202 is fixedly installed on the upper portion of the sliding plate 3, the base 1203 is fixedly installed on the bottom plate assembly 2, and the guide post 1201 passes through the guide sleeve 1202 and is fixedly connected with the base 1203; an inner lining 1204 is further arranged between the guide sleeve 1202 and the guide pillar 1201, and balls are arranged on the inner lining 1204.

The sliding plate 3 is vertically displaced only when the height of the pedal 2 needs to be adjusted, i.e. the lifting driving mechanism 6 works, and when the wheel presses on the pedal 2, the sliding plate 3 is kept still, and the pedal 2 is displaced relative to the sliding plate 3. The sliding plate 3 is supported by a middle lifting driving mechanism 6, and the movement direction is limited by a sliding rail between the sliding plate 3 and the fixed plate assembly 4. Because of processing and assembling errors, it is difficult to ensure that the displacement of the sliding plate 3 is strictly vertical when the sliding plate is lifted and also difficult to ensure that the sliding plate 3 does not generate displacement when the wheel presses the pedal 2, therefore, in the embodiment, two guide post and guide sleeve mechanisms 12 are added on the sliding plate 3, so that the sliding plate 3 can be effectively limited to generate displacement only along the direction constrained by the guide post and guide sleeve mechanisms 12, further, the measurement error is reduced, and the measurement precision is improved. Because the lining 1204 is arranged between the guide sleeve 1202 and the guide column 1201 of the guide column and guide sleeve mechanism 12, and balls are arranged on the lining, the full play of the function of the guide column and guide sleeve mechanism is further ensured, and the sliding plate is prevented from moving downwards along with the pedal in the detection process.

Example 7

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 6, and the differences are mainly as follows: the sliding plate 3 is connected to the driving mechanism through the swing rod transmission mechanism 10, as shown in fig. 3 and 5, the swing rod transmission mechanism 10 of this embodiment includes an upper slider fixing plate 1001, a swing rod 1002 and a lower slider fixing plate 1003, wherein two ends of a plurality of parallel swing rods 1002 are respectively rotatably connected to the upper slider fixing plate 1001 and the lower slider fixing plate 1003 (bearings are respectively installed at two ends of the swing rod 1002, and bearing pins matched with the bearings are respectively fixed on the upper slider fixing plate 1001 and the lower slider fixing plate 1003, so as to realize the rotatable connection of the swing rod 1002 with the upper slider fixing plate 1001 and the lower slider fixing plate 1003) and form a parallelogram mechanism, the upper slider fixing plate 1001 is fixedly connected to the sliding plate 3, the lower slider fixing plate 1003 is drivingly connected to the elevation driving mechanism 6, the lower slider fixing plate 1003 is driven by the elevation driving mechanism 6 to move in the horizontal direction, and the upper slider fixing plate 1001 moves up and down under the action of the swing rod 1002, thereby driving the sliding plate 3 to perform lifting motion synchronously with the pedal 2. This embodiment is through the setting of pendulum rod drive mechanism to carry out optimal design to its structure, thereby be favorable to guaranteeing sliding plate 3 elevating movement's stationarity on the one hand, and prevent effectively that sliding plate 3 from taking place to incline when the footboard 2 is pressed to the wheel, on the other hand can also effectively save elevating drive mechanism 6's installation space, directly turns into the elevating movement of sliding plate 3 with the horizontal motion of elevating drive mechanism 6 output.

Example 8

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 7, and the difference is mainly that: but the pendulum rod drive mechanism 10 of this embodiment passes through slide rail mechanism and bottom plate assembly 5 sliding connection, it is concrete, this slide rail mechanism includes first slider 1004 and first guide rail 1005, wherein first guide rail 1005 fixed mounting is on bottom plate assembly 5, first slider 1004 interval fixed mounting is in the bottom of lower slider fixed plate 1003, when lift actuating mechanism 6 drives lower slider fixed plate 1003, easily make lower slider fixed plate 1003 carry out horizontal motion along linear guide, and be favorable to guaranteeing the stationarity of pendulum rod drive mechanism 10 motion.

Example 9

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 8, and the differences are mainly as follows: as shown in fig. 3 and 4, the sliding rail mechanisms between the sliding plate 3 and the pedal 2 and between the sliding plate 3 and the fixed plate assembly 4 both include a sliding block and a guiding rail that are matched with each other, in this embodiment, the sliding block is fixedly mounted on the pedal 2 and the fixed plate assembly 4, and the guiding rail that is in sliding fit with the sliding block is correspondingly disposed on the sliding plate 3, wherein the sliding rail mechanism between the sliding plate 3 and the fixed plate assembly 4 is vertically mounted with respect to the sliding plate 3, and the sliding rail mechanism between the sliding plate 3 and the pedal 2 is obliquely mounted with respect to the sliding plate 3, so that the structural stability of the whole device is improved, and the impact of the wheel on the measuring device is effectively reduced.

Example 10

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 9, and the difference is mainly that: the lifting driving mechanism 6 is driven by a motor, specifically, as shown in fig. 5 and 7, the lifting driving mechanism 6 of this embodiment includes a driving motor 601, a lead screw 603 and a lead screw nut 604, wherein the driving motor 601 is fixedly mounted at the bottom of the bottom supporting plate 501 through a motor mounting seat 602, an output shaft thereof is fixedly connected with one end of the lead screw 603 through a coupling, the other end of the lead screw 603 passes through the lead screw nut 604 and is in threaded connection with the lead screw nut 604, a lead screw fixing seat 605 is fixed on the bottom supporting plate 501, and the lead screw 603 is mounted and supported through the lead screw fixing seat 605. The lead screw nut 604 is fixedly connected with the lower slider fixing plate 1003 of the swing rod transmission mechanism 10 through a nut connecting rod 1006, in this embodiment, the lower end of the nut connecting rod 1006 is fixed on the surface of the lead screw nut 604 in a sleeved mode, and the upper end of the nut connecting rod 1006 passes through the bottom supporting plate 501 and is fixedly connected with the lower slider fixing plate 1003. When the motor rotates, the screw 603 is driven to rotate, and the screw nut 604 drives the nut connecting rod 1006 and the lower slider fixing plate 1003 to move back and forth along the horizontal direction, so that the sliding plate 3 moves up and down. Meanwhile, it should be noted that the lifting driving mechanism 6 is not limited to the specific structure of the embodiment, as long as the lower slider fixing plate 1003 can be driven to move horizontally, for example, a servo electric cylinder is directly used to replace the driving motor 601 of the embodiment, and a cylinder rod of the servo electric cylinder is fixedly connected to the nut connecting rod 1006.

Example 11

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is substantially the same as that in embodiment 10, and the difference is mainly that: in this embodiment, the end of the screw 603 is further fixedly connected to the electromagnetic brake 11, and the electromagnetic brake 11 is fixedly mounted at the bottom of the bottom support plate 501.

Due to the system requirement, when the wheel presses the pedal 2, the force borne by the pedal 2 is transmitted to the sliding plate 3 through the elastic element 8, if the sliding plate 3 generates displacement, the measurement is affected, and even the displacement sensor cannot measure data. It is important that the slide plate 3 is kept stationary. In the embodiment, an electromagnetic brake 11 is installed at the end of the lead screw 603, and when the motor is driven, the electromagnetic brake 11 is braked, and the motor can smoothly move the sliding plate 3 up and down. When the wheel presses the pedal 2, the motor keeps still, the electromagnetic brake 11 keeps braking, thereby ensuring that the screw nut 604 does not move horizontally, and the sliding plate 3 does not move up and down, thereby ensuring the measurement accuracy.

As shown in fig. 17, the process of the method for online dynamic detection of wheel radial runout of the present embodiment is as follows:

step one, judging whether a train enters or exits a warehouse

Judging the warehousing and ex-warehousing of the train through the triggering sequence of the triggering unit, and if the train is warehousing, controlling the front-end mechanism 15 and the detection mechanism to start through the control system to prepare for wheel detection; if the train is delivered from the warehouse, the front-end mechanism 15 and the detection mechanism are not started;

step two, detecting the rim height of the train wheel

When the train is put in storage and passes through the front-end mechanism 15, the front-end mechanism 15 detects the rim height of the train wheels and feeds the rim height back to the control system;

step three, adjusting the prepressing amount of the pedal of the detection mechanism

And controlling the lifting driving mechanism 6 to operate through the control system according to the detection result of the preposed mechanism 15, so as to adjust the initial height of the pedal 2 in the detection mechanism, and stopping the lifting driving mechanism 6 when the prepressing amount of the pedal 2 is in the set range.

The control mode of the pedal prepressing amount is as follows: when the system is started, when the front setting mechanism detects that the height of the wheel rim is Sh1, the system judges whether the height of the wheel rim reaches the prepressing amount of 1.5-2mm, if the prepressing amount is in the range, the detection mechanism does not need to act, and if the height of the wheel rim is not in the range, a servo motor of the detection mechanism controls the pedal to ascend and descend to the position W2, so that the height of the wheel rim Sh1 reaches the prepressing amount of 1.5-2 mm. When the front setting mechanism 15 detects that the rim height of the next wheel is Sh2 and the previous wheel passes through the detection mechanism, the detection mechanism judges whether the current W2 position is in the range that the pre-pressing amount of the rim height Sh2 is 1.5-2mm or not and performs corresponding lifting adjustment until the wheels of the complete train are detected. When the front-end mechanism 15 no longer generates new rim height for a period of time, the train is considered to have passed the detection system, the front-end mechanism 15 and the detection mechanism return to zero positions, and the system stops working. In the process of adjusting the prepressing amount of the detection mechanism, the preposition mechanism 15 is always positioned at the position W1 and is unchanged, and a plurality of sets of detection mechanisms of the steel rail at each side are lifted to the same position each time.

Step four, detecting radial runout of the tread of the train wheel

When the train wheel passes through the detection mechanism, the detection mechanism detects the radial run-out of the tread of the train wheel.

Example 12

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is substantially the same as that in embodiment 11, and the difference is mainly that: referring to fig. 2, the fixing plate assembly 4 of the present embodiment includes a main fixing plate 401, end fixing plates 402 disposed at two ends of the main fixing plate 401, and an upper sealing plate 403 disposed on top of the main fixing plate 401, wherein the main fixing plate 401, the end fixing plates 402, and the upper sealing plate 403 together surround to form a box-type structure. The sliding plate 3 is connected with the pedal 2 in a sliding manner through the first sliding rail 701, connected with the main fixing plate 401 in a sliding manner through the second sliding rail 702, and connected with the end fixing plate 402 in a sliding manner through the third sliding rail 703, so that the stability of the whole device structure and the stability of the sliding plate during up-and-down movement can be further improved, and the measurement precision can be favorably ensured. Furthermore, an intermediate fixing plate 404 is further disposed between the pedal 2 and the sliding plate 3, the sliding plate 3 and the intermediate fixing plate 404 are slidably connected by a fourth slide rail 704, the main fixing plate 401, the end fixing plate 402, the upper sealing plate 403 and the intermediate fixing plate 404 together surround to form a relatively closed box-type structure, and the sliding plate 3 is installed inside the box-type fixing plate assembly. In this embodiment, the displacement sensor 901 is fixedly mounted on the upper sealing plate 403 through a sensor mounting seat 902, and the sensor mounting seat 902 is processed into a C-shaped structure.

Example 13

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is basically the same as that in embodiment 12, and the differences are mainly that: the elastic element 8 may be a spring, specifically, as shown in fig. 4, the elastic element 8 of the present embodiment is a compression spring structure, and is fixedly mounted on the sliding plate 3 through an elastic element support 801 (the elastic element support 801 is provided with a mounting hole having the same diameter as the elastic element), the pedal 2 is correspondingly provided with an elastic element support plate 803 acting on the end of the piston rod of the elastic element 8, and the elastic element support plate 803 of the present embodiment is processed into a Z shape. In this embodiment, an elastic element adjusting plate 802 is further fixed on the sliding plate 3, the elastic element adjusting plate 802 is L-shaped and fixed on the sliding plate 3 by bolts, a threaded hole is processed on the elastic element adjusting plate 802, a jackscrew penetrates through the threaded hole and is jacked on an elastic element supporting plate 803 of the pedal, the prepressing force of the spring is adjusted by the jackscrew, and after the prepressing force is adjusted to a preset position, the jackscrew is fastened by a nut.

It should be noted that the elastic element 8 specifically includes, but is not limited to, a coil spring, a gas spring, a liquid spring, a leaf spring, a rubber spring, etc., and the mounting seat thereof can be made into different seats according to the shape and the use requirement of the element, as long as the following elastic connection between the pedal 2 and the sliding plate 3 can be realized. For example, when the spiral tension spring in fig. 13 is used as the elastic element, the spring pins 804 are fixed on the pedal 2 and the sliding plate 3, as shown in fig. 14, spring hooks are respectively disposed at two ends of the spiral tension spring, hook grooves 805 corresponding to the spring hooks are correspondingly formed on the spring pins 804, and two ends of the spiral tension spring are respectively fixed on the pedal 2 and the sliding plate 3 through the spring hooks.

The detection process by adopting the detection mechanism of the embodiment is as follows:

step one, pedal height adjustment: according to the rim height of a train wheel to be detected, the lifting driving mechanism 6 drives the swing rod transmission mechanism 10 to swing so as to drive the sliding plate 3 to lift, at the moment, no relative motion exists between the pedal 2 and the sliding plate 3, the pedal 2 synchronously lifts along with the sliding plate 3, and when the pedal 2 lifts to a specified position, the lifting driving mechanism 6 stops working;

step two, wheel radial run-out detection: when a wheel presses the pedal 2, the pedal 2 is pressed by the rim of the wheel to generate downward displacement along the direction of the sliding rail, in the process of descending the pedal 2, the sliding plate 3 is kept still relative to the fixed plate assembly 4 under the action of the lifting driving mechanism 6, at the moment, the displacement sensor 901 generates relative displacement relative to the displacement sensing plate 903, and the displacement of the pedal 2 pressed by the rim of the wheel when the wheel passes is obtained through conversion; the radial run-out condition of the train wheel tread can be obtained by processing the data acquired by the displacement sensor 901 in the circumference of the whole wheel tread;

step three, when the wheels leave, the pedal 2 is restored to the initial position under the action of the elastic element 8; at this time, the lifting drive mechanism 6 continues to start, and the drive pedal 2 descends to a specified position, no matter what the rim height of the passing wheel is, the rim of the wheel cannot press the pedal 2.

Specifically, when the length of the pedal 2 is greater than the wheel circumference, the circumferential data of one circle of the wheel tread can be detected, and the out-of-round condition of the wheel tread can be further depicted. The displacement curve of each detection mechanism pedal 2 is intercepted and spliced to obtain a pedal 2 displacement curve from the first detection mechanism to the last detection mechanism, and a maximum value and a minimum value are obtained from the displacement curve, and the difference value between the maximum value and the minimum value is the radial runout value of the wheel.

There are two methods for controlling the detection mechanism pedal 2 to lift to the appropriate pre-pressure amount by the system, namely a table look-up method and a tracking method. The table look-up method is to divide the minimum rim height to the maximum rim height into n intervals, each interval corresponds to different positions Wn of the pedal 2 of the detection mechanism, when the front mechanism 15 detects the rim height Sh of the wheel to be detected, the interval to which the rim height belongs is judged, and then the pedal 2 of the detection mechanism is lifted to the position W corresponding to the interval. The tracking method is to use the displacement sensor as a feedback signal and continuously adjust the position of the pedal 2 of the detection mechanism until the indication value of the displacement sensor reaches the indication value under the required pre-pressure amount. For example, when the current indication value of the displacement sensor is Z1, and the front-mounted mechanism detects the rim height Sh of the wheel to be detected, the system calculates the indication value Z2 that the displacement sensor needs to reach according to the pre-pressure amount, then the servo motor is started to lift, and in the process of lifting the motor, the indication value of the displacement sensor is changed continuously and is transmitted to the servo motor as a feedback signal, and when the indication value of the displacement sensor reaches Z2, the pedal 2 of the detection mechanism is considered to have lifted to the required position, and then the motor is turned off.

Example 14

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is substantially the same as that in embodiment 15, and the difference is mainly that: the structure of the front-end mechanism 15 of the present embodiment is the same as the detection mechanism, as shown in fig. 16, wherein the upper surface of the pedal of the front-end mechanism 15 sequentially includes an ascending section 201, a horizontal section 202 and a descending section 203 along the direction of entering the train, when a wheel passes through the front-end mechanism 15, a maximum displacement value is generated in the horizontal section 202 of the pedal assembly 2, and the rim height of the wheel can be measured according to the maximum value, and the specific method is as follows: when a wheel with a known rim height of Sh1 passes through the front-end mechanism 15, the maximum displacement of a pedal of the front-end mechanism 15 is h1, and when a wheel with an unknown rim height passes through the front-end mechanism, the maximum displacement of the pedal of the front-end mechanism is h2, the rim height of the unknown wheel, Sh2, is Sh1+ (h2-h 1).

Example 15

The structure of the system for dynamically detecting wheel radial runout on line in this embodiment is substantially the same as that in embodiment 14, and the difference is mainly that: the detection mechanism on the inner side of each side rail in this embodiment includes a first detection mechanism 1601, a second detection mechanism 1602, a third detection mechanism 1603, and a fourth detection mechanism 1604.

When the magnetic steel detects that the train is put in storage, the detection system is started, the front-end mechanism and the four sets of detection mechanisms rise to the specified position, and the process is completed before the train reaches the front-end mechanism. When the front mechanism detects the rim height of the first wheel, the four sets of detection mechanisms are combined with the current position to judge whether the rim height meets the requirement that the pre-pressing amount is 1.5-2mm, if not, the PLC controls the servo motor to ascend and descend to the position meeting the condition, and the process is completed before the wheel to be detected reaches the first detection mechanism 1601. After the fourth detection mechanism 1604 finishes acting, LOG data recording is started, the vertical displacement of the pedals when the wheel passes through each detection mechanism is recorded, and LOG data recording is stopped when the wheel leaves the fourth detection mechanism 1604. When the front-mounted mechanism detects that the rim of the second wheel is high, the first wheel does not pass through the detection mechanism, each detection mechanism judges whether the first wheel leaves or not at first, if the first wheel leaves, the detection mechanism ascends and descends to a proper position according to the current position and the rim of the second wheel, and if the first wheel does not leave or reaches the detection mechanism, the detection mechanism starts to ascend and descend after the first wheel leaves. The system starts a LOG data record each time the first detecting means 1601 finishes lifting, and similarly stops the previous LOG data record each time the fourth detecting means 1604 detects the wheel is out of position. And when the front-end mechanism has no new value, the system considers that the train passes through the detection mechanism, and the front-end mechanism and the detection mechanism return to the initial position.

The data that the displacement sensor who will four sets of detection mechanism gathered all send the host computer to, and what the size reflection of this data is the size of the relative value of the different circumferential position wheel rims height of wheel tread, when footboard length is greater than wheel week length, can detect the circumference data of wheel tread a week, further draws out the out-of-round condition of wheel tread. The upper computer intercepts and splices the displacement curve of each detection mechanism pedal to obtain a pedal displacement curve from the first detection mechanism 1601 to the fourth detection mechanism 1604, and the maximum value and the minimum value are obtained from the pedal displacement curve, and the difference value between the maximum value and the minimum value is the radial runout value of the wheel.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims (9)

1. A system for on-line dynamic detection of wheel runout, characterized by: the device comprises a front-end mechanism (15) and a detection mechanism, wherein the front-end mechanism (15) and the detection mechanism are sequentially arranged on the inner side of a track along the warehousing direction of a train, the front-end mechanism (15) is used for detecting the rim height of a wheel to be detected, the detection mechanism is used for detecting the radial runout of the wheel, the detection mechanism comprises a pedal (2), a sliding plate (3), a fixed plate assembly (4) and a pedal balance mechanism (13), the pedal (2), the sliding plate (3), the pedal (2) and the fixed plate assembly (4) are arranged on the inner side of the track (1) and are parallel to each other, the sliding plate (3), the pedal (2) and the fixed plate assembly (4) are connected through a sliding rail mechanism, the sliding plate (3) is connected with a lifting driving mechanism (6), and an elastic element (8) is connected between the sliding plate (3) and the pedal (2); the pedal (2) is connected with a pedal balance mechanism (13).

2. A system for on-line dynamic detection of wheel runout according to claim 1, characterized in that: the pedal balancing mechanism (13) comprises a swing arm (1302), a slider fixing plate (1303) and a guide rail seat (1305), wherein the slider fixing plate (1303) is slidably mounted on the guide rail seat (1305) through a sliding rail mechanism, and two ends of the swing arm (1302) are respectively connected with the slider fixing plate (1303) and the pedal (2) in a rotating mode.

3. A system for on-line dynamic detection of wheel runout according to claim 2, characterized in that: the sliding rail mechanism between the sliding block fixing plate (1303) and the guide rail seat (1305) comprises a second guide rail (1304) installed on the guide rail seat (1305) and a second sliding block (1306) installed on the sliding block fixing plate (1303).

4. A system for on-line dynamic detection of wheel runout according to any of claims 1-3, characterized in that: the detection mechanisms are symmetrically arranged on the inner sides of the tracks at the two sides, and the number of the detection mechanisms at the same side is more than or equal to 2; the front of the front-end mechanism (15) is also provided with a trigger mechanism, and the trigger mechanism comprises a first magnetic steel (1401) and a second magnetic steel (1402) which are arranged along the inner side of the unilateral track at intervals.

5. A system for on-line dynamic detection of wheel runout according to any of claims 1-3, characterized in that: the fixed plate assembly (4) and the pedal balance mechanism (13) are fixedly arranged on the bottom plate assembly (5), and the bottom plate assembly (5) is fixedly arranged at the bottom of the track (1).

6. A system for on-line dynamic detection of wheel runout according to claim 5, characterized in that: the two ends of the sliding plate (3) are respectively provided with a guide post and guide sleeve mechanism (12), the guide post and guide sleeve mechanism (12) comprises a guide post (1201), a guide sleeve (1202) and a base (1203), the guide sleeve (1202) is fixedly arranged on the upper part of the sliding plate (3), the base (1203) is fixedly arranged on the bottom plate assembly (5), and the guide post (1201) penetrates through the guide sleeve (1202) and is fixedly connected with the base (1203); an inner lining (1204) is further arranged between the guide sleeve (1202) and the guide pillar (1201), and balls are arranged on the inner lining (1204).

7. A system for on-line dynamic detection of wheel runout according to claim 5, characterized in that: the sliding plate (3) is connected with the lifting driving mechanism (6) through a swing rod transmission mechanism (10), the swing rod transmission mechanism (10) comprises an upper sliding block fixing plate (1001), a swing rod (1002) and a lower sliding block fixing plate (1003), two ends of the swing rod (1002) are respectively connected with the upper sliding block fixing plate (1001) and the lower sliding block fixing plate (1003) in a rotating mode to form a parallelogram mechanism, the upper sliding block fixing plate (1001) is fixedly connected with the sliding plate (3), and the lower sliding block fixing plate (1003) is connected with the lifting driving mechanism (6) in a driving mode.

8. A system for on-line dynamic detection of wheel runout according to claim 7, characterized in that: the lower sliding block fixing plate (1003) is connected with the bottom plate assembly (5) in a sliding mode through a sliding rail mechanism, the sliding rail mechanism comprises a first sliding block (1004) installed on the lower sliding block fixing plate (1003), and a first guide rail (1005) installed on the bottom plate assembly (5) and matched with the first sliding block (1004).

9. A system for on-line dynamic detection of wheel runout according to any of claims 1-3, characterized in that: a displacement sensing plate (903) is fixed on the pedal (2), and a fixedly installed displacement sensor (901) is correspondingly arranged above or below the displacement sensing plate (903).

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