CN221006262U - Front-end pre-detection unit and wheel out-of-roundness online dynamic detection system - Google Patents

Abstract

The utility model relates to the technical field of train detection, and discloses a front-end pre-detection unit and an on-line dynamic detection system for wheel out-of-roundness, which comprise a bottom plate, a lower pressing plate, an elastic supporting component and a displacement measuring component; the elastic supporting component and the displacement measuring component are arranged on the bottom plate; the lower pressing plate is arranged on the elastic supporting component, can descend relative to the bottom plate under the action of the wheels, and can ascend under the action of the elastic supporting component after the wheels leave so as to recover to the initial height. According to the utility model, the lower pressing plate is arranged on the elastic supporting component, so that the lower pressing plate can descend under the action of the wheels, and the displacement measuring component can measure the displacement of the lower pressing plate in height at the moment, so that a train vehicle is driven through, a lifting adjustment trigger signal is provided for a subsequent wheel out-of-roundness detection device, and meanwhile, the lower pressing plate can ascend under the action of the elastic supporting component after the wheels leave, so that the initial height is recovered, and the next trigger is waited.

Description

Front-end pre-detection unit and wheel out-of-roundness online dynamic detection system

Technical Field

The utility model relates to the technical field of train vehicle detection, in particular to a front-end pre-detection unit and an on-line dynamic detection system for wheel out-of-roundness.

Background

Along with the demands and development of the railway transportation industry in China, the safety problem of the train is particularly important. In the long-time running process of the train, uneven abrasion can be generated on the tread of the wheels, so that the wheels are out of round, noise, vibration and the like can be generated on the train, and the stability of the train is affected. Therefore, the wheels need to be detected regularly, so that when the wear value of the wheel set reaches a certain value, the wheels are replaced in time, and catastrophic consequences such as derailment and the like are avoided.

For a long time, a manual detection method is mostly adopted for detecting the out-of-roundness of the wheel, namely, a detection device is required to be installed on the wheel and roll for one circle, the method is low in efficiency, and a maintainer is easy to fatigue in work, so that the method for dynamically detecting the out-of-roundness of the wheel on line is particularly critical.

Currently, an on-line dynamic wheel out-of-roundness detection device commonly used in the industry comprises a lifting adjustment mechanism and a detection plate arranged on a rotating lifting assembly. When the wheels with different rim heights are faced, the height of the detection plate is actively adjusted by the lifting adjusting mechanism, so that the detection plate is prevented from being impacted too much. However, there is a problem in that the commercial detection device has no special trigger unit, so that the lifting adjustment mechanism cannot be started in time, so that the height of the detection plate is not adjusted or is not adjusted in place in many times, and the wheels are already pressed, so that the effect of preventing excessive impact cannot be well achieved.

Accordingly, improvements in the art are needed.

The above information is presented as background information only to aid in the understanding of the present disclosure and is not intended or admitted to be prior art relative to the present disclosure.

Disclosure of utility model

The utility model provides a front-end pre-detection unit and an on-line dynamic detection system for wheel out-of-roundness, which are used for solving the defects in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

In a first aspect, the present utility model provides a front-end pre-inspection unit, including a base plate, a lower platen, an elastic support assembly, and a displacement measurement assembly; wherein,

The elastic supporting component and the displacement measuring component are arranged on the bottom plate;

the lower pressing plate is arranged on the elastic supporting component, can descend relative to the bottom plate under the action of the wheels, and can ascend under the action of the elastic supporting component after the wheels leave so as to recover to the initial height.

Further, in the front-end pre-detection unit, the elastic supporting component comprises at least two swing rod groups, a support, a rotating shaft, an elastic piece and a fixing seat;

the support and the fixing seat are arranged on the bottom plate;

One end of each swing rod group is rotatably connected with the support through one rotating shaft, and the other end of each swing rod group is rotatably connected with the lower pressing plate through one rotating shaft;

One end of the elastic piece is connected with the swing rod group, and the other end of the elastic piece is connected with the fixed seat.

Further, in the front end pre-detection unit, the swing rod group and the fixing seat are provided with insertion holes for inserting the end parts of the elastic pieces.

Further, in the front-end pre-detection unit, a plurality of jacks are arranged;

and a plurality of jacks are arranged at intervals.

Further, the front-end pre-detection unit further comprises a limiting guide assembly;

The limiting guide assembly is arranged on the bottom plate and is movably connected with the lower pressing plate.

Further, in the front-end pre-detection unit, the limit guide assembly comprises a limit guide plate and a pin;

the limiting guide plate is provided with a limiting guide hole;

the pin is fixed on the lower pressing plate and is movably arranged in the limit guide hole.

Further, in the front-end pre-detection unit, the swing rod group comprises a first swing rod and a second swing rod, wherein the swing planes of the first swing rod and the second swing rod are parallel to each other;

The first swing rod and the second swing rod are positioned on opposite sides of the lower pressing plate.

Further, in the front-end pre-detection unit, the displacement measurement assembly comprises a displacement sensor and a displacement sensing plate;

The displacement sensor is arranged on the bottom plate;

the displacement sensing plate is arranged on the lower pressing plate and faces the displacement sensor;

or, the displacement sensor is arranged on the lower pressing plate;

the displacement sensing plate is arranged on the bottom plate and faces the displacement sensor.

Further, the front end pre-detection unit further comprises a clamping block;

The clamping block is arranged on the bottom plate and provided with a clamping interface matched with the steel rail.

In a second aspect, the present utility model provides an online dynamic wheel out-of-roundness detection system, which comprises a wheel out-of-roundness detection device and a front end pre-detection unit according to the first aspect;

the front end pre-detection unit and the wheel out-of-roundness detection device are sequentially arranged at intervals along the travelling direction of the train.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a front-end pre-detection unit and an online dynamic detection system for wheel out-of-roundness, which comprises a bottom plate, a lower pressure plate, an elastic supporting component and a displacement measuring component, wherein the elastic supporting component and the displacement measuring component are arranged on the bottom plate, and the lower pressure plate is arranged on the elastic supporting component, so that the lower pressure plate can descend relative to the bottom plate under the action of a wheel, and the displacement measuring component can measure the displacement of the lower pressure plate in height at the moment, so that a train vehicle can be determined to drive through, a reliable and stable lifting adjustment trigger signal is provided for a subsequent wheel out-of-roundness detection device, and meanwhile, the lower pressure plate can ascend under the action of the elastic supporting component after the wheel leaves, so as to recover to the initial height and wait for the next trigger.

The utility model has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, taken in conjunction with the accompanying drawings and the detailed description, which illustrate certain principles of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a front-end pre-inspection unit according to a first embodiment of the present utility model;

fig. 2 is a schematic perspective view of a front-end pre-inspection unit according to a first embodiment of the present utility model;

Fig. 3 is a schematic front view of a front end pre-inspection unit according to a first embodiment of the present utility model;

FIG. 4 is a schematic diagram of a partial structure of a front-end pre-inspection unit according to a first embodiment of the present utility model;

fig. 5 is a schematic partial structure of a displacement measurement assembly according to an embodiment of the present utility model.

Reference numerals:

The device comprises a bottom plate 1, a lower pressing plate 2, an elastic supporting component 3, a displacement measuring component 4, a limiting guide component 5 and a clamping block 6;

The device comprises a swing rod group 31, a support 32, a rotating shaft 33, an elastic piece 34, a fixing seat 35 and an inserting hole 36;

a displacement sensor 41, a displacement sensing plate 42;

limit guide plate 51, pin 52, limit guide hole 53;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. In addition, as one of ordinary skill in the art can know, with technical development and new scenarios, the technical solution provided by the embodiment of the present application is also applicable to similar technical problems.

In the description of the present application, it is to be understood that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. Furthermore, any terminology used is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

In addition, numerous specific details are set forth in the following description in order to provide a better illustration of the application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present application.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

In view of the above-mentioned drawbacks of the existing wheel out-of-roundness detection technology, the present inventors have actively studied and innovated based on the practical experience and expertise that are rich for many years in designing and manufacturing such products, and in combination with application of the theory, so as to hope to create a technology capable of solving the drawbacks in the prior art, so that the wheel out-of-roundness detection technology has more practicability. After continuous research and design and repeated sample test and improvement, the utility model with practical value is finally created.

Referring to fig. 1, an embodiment of the present utility model provides a front end pre-inspection unit, which includes a base plate 1, a lower pressure plate 2, an elastic support assembly 3 and a displacement measurement assembly 4; wherein,

The elastic support component 3 and the displacement measurement component 4 are arranged on the bottom plate 1;

The lower pressing plate 2 is arranged on the elastic supporting component 3, the lower pressing plate 2 can descend relative to the bottom plate 1 under the action of wheels, and can ascend under the action of the elastic supporting component 3 after the wheels leave so as to recover to the initial height.

It should be noted that, the front end pre-detection unit provided in this embodiment is an independent unit different from the existing wheel out-of-roundness detection device, and in actual use, it needs to be placed on a track together with the wheel out-of-roundness detection device and is located in front of the wheel out-of-roundness detection device, and its main function is to detect arrival of a train vehicle, and generate a trigger signal to trigger a lifting adjustment mechanism in the wheel out-of-roundness detection device at the rear, so that the lifting adjustment mechanism has enough time to adjust the height of the detection plate, so as to adapt to wheels with different rim heights, and prevent the detection plate from being impacted too much.

Specifically, by disposing the elastic support assembly 3 and the displacement measurement assembly 4 on the bottom plate 1, and disposing the lower platen 2 on the elastic support assembly 3, the lower platen 2 may descend relative to the bottom plate 1 under the action of the wheels, and at this time, the displacement measurement assembly 4 will measure the displacement of the lower platen 2 in height, so that it can be determined that the train vehicle is running through, and the displacement measurement assembly 4 may transmit the displacement signal as a trigger signal to the lifting adjustment mechanism in the wheel out-of-roundness detection apparatus at the rear in a wired or wireless manner.

It will be appreciated that, since the front-end pre-inspection unit needs to be operated repeatedly, the elastic support assembly 3 can provide an elastic restoring force, so that the lower pressure plate 2 can also be lifted up under the action of the elastic support assembly 3 after the wheels leave, so as to restore to the original height, and wait for the next triggering.

Referring to fig. 2-3, in the present embodiment, the elastic supporting assembly 3 includes at least two swing rod groups 31, a support 32, a rotating shaft 33, an elastic member 34 and a fixing seat 35;

The support 32 and the fixing seat 35 are arranged on the bottom plate 1;

One end of each swing rod group 31 is rotatably connected with the support 32 through one rotating shaft 33, and the other end is rotatably connected with the lower pressing plate 2 through one rotating shaft 33;

One end of the elastic member 34 is connected with the swing rod group 31, and the other end is connected with the fixing seat 35.

It should be noted that the elastic member 34 may be a torsion spring. Torsion springs are a common type of spring that is widely used in a variety of mechanical devices, and primarily function to provide elastic support and elastic restoring force.

As mentioned above, the lower pressure plate 2 is passively pressed down when the wheel is pressed, after which the lower pressure plate 2 needs to be restored to the original height in time after the wheel is driven off, and the elastic member 34 in this embodiment is for this purpose. Specifically, when the wheel rim rolls the lower platen 2, the lower platen 2 is moved downward by the pressing force, the elastic member 34 is also subjected to a torsion force, and the elastic member 34 is twisted and stores elastic potential energy until the torsion force is reduced or eliminated when the train car passes, the elastic member 34 releases the stored elastic potential energy to restore its original shape, and the released elastic potential energy acts as an elastic restoring force to the lower platen 2 to restore the lower platen 2 to its original height.

It will be appreciated that the resilience of the torsion spring depends on such factors as its material, geometry and size. In general, the spring constant of a torsion spring refers to the torsion angle that is produced when the torsion spring is subjected to a unit torsion moment. The greater the spring rate, the more sensitive the torsion spring is to torsion force, i.e., it can store more elastic potential energy.

In addition, at least two of the swing link groups 31 are rotatably connected to the lower platen 2, so that the stress balance of the lower platen 2 can be ensured. The support 32 provides a fixed condition for the swing link group 31, and the rotating shaft 33 realizes rotatable connection between the swing link group 31 and the support 32, and the rotating shaft 33 rotates synchronously in the process that the swing link group 31 rotates by taking one end fixed on the support 32 as a rotation center.

Referring to fig. 4, in the present embodiment, the swing rod set 31 and the fixing base 35 are provided with insertion holes 36 for inserting the ends of the elastic members 34.

It should be noted that the insertion hole 36 may facilitate the insertion of the end portion of the elastic member 34, so as to connect the swing rod group 31 and the fixing seat 35 with the corresponding end portions of the elastic member 34.

In this embodiment, the jacks 36 are provided in several numbers;

A plurality of the insertion holes 36 are provided at intervals.

It should be noted that the purpose of the plurality of insertion holes 36 is to adjust the elastic restoring force of the elastic member 34, that is, when the ends of the elastic member 34 are inserted into different insertion holes 36, the initial shape of the elastic member 34 may be in a state of not receiving the torsion force, where after the subsequent compression, the elastic member 34 may correspondingly provide a smaller elastic restoring force, and the initial shape of the elastic member 34 may also be in a state of having received a certain torsion force, where after the subsequent compression, the elastic member 34 may correspondingly provide a larger elastic restoring force.

Referring to fig. 2-3 again, in this embodiment, the front end pre-detection unit further includes a limit guide assembly 5;

the limiting guide assembly 5 is arranged on the bottom plate 1 and is movably connected with the lower pressing plate 2.

It should be noted that, the limit guiding assembly 5 mainly plays two roles, one plays a role of guiding during the lifting process of the lower platen 2, and the other plays a role of limiting the lifting height of the lower platen 2, so as to ensure that the height of each recovery of the lower platen 2 is consistent.

Referring again to fig. 2-3, in this embodiment, the limit guide assembly 5 includes a limit guide plate 51 and a pin 52;

the limit guide plate 51 is provided with a limit guide hole 53;

The pin 52 is fixed on the lower platen 2 and is movably disposed in the limit guide hole 53.

In this embodiment, the swing link group 31 includes a first swing link and a second swing link whose swing planes are parallel to each other;

The first swing link and the second swing link are located on opposite sides of the lower platen 2.

Referring to fig. 5, in the present embodiment, the displacement measuring assembly 4 includes a displacement sensor 41 and a displacement sensing plate 42;

The displacement sensor 41 is provided on the base plate 1;

the displacement sensing plate 42 is disposed on the lower platen 2 and is disposed toward the displacement sensor 41;

or, the displacement sensor 41 is provided on the lower platen 2;

the displacement sensing plate 42 is provided on the base plate 1 and is disposed toward the displacement sensor 41.

Fig. 5 shows a case where the displacement sensor 41 is provided on the base plate 1, and the displacement sensing plate 42 is provided on the lower platen 2 so as to face the displacement sensor 41.

Taking the example shown in fig. 5 as an example, during the front end pre-inspection, the displacement sensing plate 42 moves up and down along with the lower platen 2, and the displacement sensor 41 may measure the change of the distance between the sensor head and the displacement sensing plate 42, that is, the movement amount of the lower platen 2.

Referring to fig. 1 again, in this embodiment, the front end pre-inspection unit further includes a clamping block 6;

The clamping block 6 is arranged on the bottom plate 1 and is provided with a clamping port matched with the steel rail.

The front-end pre-detection unit may be mounted on the rail through the clamping block 6. Fig. 1 shows two clamping blocks 6, the clamping ports of the two clamping blocks 6 are arranged in the same direction, and the two clamping ports arranged in the same direction respectively clamp the same side of the rail bottom of the steel rail, so that the bottom plate 1 is firmly fixed on the steel rail.

Although the terms of the bottom plate, the lower pressure plate, the elastic support assembly, the displacement measuring assembly, etc. are used more in the present utility model, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

The front-end pre-detection unit comprises a bottom plate, a lower pressure plate, an elastic supporting component and a displacement measuring component, wherein the elastic supporting component and the displacement measuring component are arranged on the bottom plate, the lower pressure plate is arranged on the elastic supporting component, so that the lower pressure plate can descend relative to the bottom plate under the action of wheels, at the moment, the displacement measuring component can measure the displacement of the lower pressure plate in height, and therefore a train vehicle can be determined to drive through, a reliable and stable lifting adjustment trigger signal is provided for a follow-up wheel out-of-roundness detection device, and meanwhile, the lower pressure plate can ascend under the action of the elastic supporting component after the wheels leave, so that the initial height is restored, and the next trigger is waited.

Example two

The embodiment of the utility model provides an online dynamic detection system for wheel out-of-roundness, which comprises a wheel out-of-roundness detection device and a front end pre-detection unit as in the first embodiment;

the front end pre-detection unit and the wheel out-of-roundness detection device are sequentially arranged at intervals along the travelling direction of the train.

When the front-end pre-detection unit detects that the train passes, the front-end pre-detection unit triggers a lifting adjusting mechanism in the wheel out-of-roundness detection device to start adjusting the height of the detection plate so as to adjust the height of the detection plate to a proper height before the wheels reach the detection plate.

The utility model provides an online dynamic detection system for wheel out-of-roundness, which comprises a bottom plate, a lower pressing plate, an elastic supporting component and a displacement measuring component, wherein the elastic supporting component and the displacement measuring component are arranged on the bottom plate, and the lower pressing plate is arranged on the elastic supporting component, so that the lower pressing plate can descend relative to the bottom plate under the action of a wheel, and the displacement measuring component can measure the displacement of the lower pressing plate in height at the moment, so that a train vehicle can be determined to drive through, a reliable and stable lifting adjustment trigger signal can be provided for a subsequent wheel out-of-roundness detection device, and meanwhile, the lower pressing plate can ascend under the action of the elastic supporting component after the wheel leaves, so as to recover to the initial height and wait for the next trigger.

In view of the foregoing, it will be evident to a person skilled in the art that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not explicitly described herein, those skilled in the art will appreciate that the present application is intended to embrace a variety of reasonable alterations, improvements and modifications to the embodiments. Such alterations, improvements, and modifications are intended to be proposed by this application, and are intended to be within the spirit and scope of the exemplary embodiments of the application.

Furthermore, certain terms in the present application have been used to describe embodiments of the present application. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. Thus, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.

It should be appreciated that in the foregoing description of embodiments of the application, various features are grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure. However, this is not to say that a combination of these features is necessary, and it is entirely possible for a person skilled in the art to extract some of them as separate embodiments to understand them when reading this application. That is, embodiments of the present application may also be understood as an integration of multiple secondary embodiments. While each secondary embodiment is satisfied by less than all of the features of a single foregoing disclosed embodiment.

Finally, it is to be understood that the embodiments of the application disclosed herein are illustrative of the principles of embodiments of the present application. Other modified embodiments are also within the scope of the application. Accordingly, the disclosed embodiments are illustrative only and not limiting. Those skilled in the art can adopt alternative configurations to implement the application of the present application according to embodiments of the present application. Accordingly, embodiments of the application are not limited to the embodiments precisely described in the application.

Claims (10)

1. The front-end pre-detection unit is characterized by comprising a bottom plate (1), a lower pressing plate (2), an elastic supporting component (3) and a displacement measuring component (4); wherein,

The elastic supporting component (3) and the displacement measuring component (4) are arranged on the bottom plate (1);

The lower pressing plate (2) is arranged on the elastic supporting component (3), the lower pressing plate (2) can descend relative to the bottom plate (1) under the action of the wheels, and can ascend under the action of the elastic supporting component (3) after the wheels leave, so that the original height is recovered.

2. The front-end pre-inspection unit according to claim 1, characterized in that the elastic support assembly (3) comprises at least two swing rod groups (31), a support (32), a rotating shaft (33), an elastic piece (34) and a fixed seat (35);

The support (32) and the fixing seat (35) are arranged on the bottom plate (1);

One end of each swing rod group (31) is rotatably connected with the support (32) through one rotating shaft (33), and the other end is rotatably connected with the lower pressing plate (2) through one rotating shaft (33);

One end of the elastic piece (34) is connected with the swing rod group (31), and the other end of the elastic piece is connected with the fixing seat (35).

3. The front-end pre-detection unit according to claim 2, wherein insertion holes (36) through which the ends of the elastic members (34) can be inserted are formed in the swing rod group (31) and the fixing base (35).

4. A front-end pre-inspection unit according to claim 3, characterized in that the jacks (36) are several;

the jacks (36) are arranged at intervals.

5. The front-end pre-inspection unit according to claim 1, further comprising a limit guide assembly (5);

The limiting guide assembly (5) is arranged on the bottom plate (1) and is movably connected with the lower pressing plate (2).

6. The front-end pre-inspection unit according to claim 5, characterized in that the limit guide assembly (5) comprises a limit guide plate (51) and a pin (52);

The limiting guide plate (51) is provided with a limiting guide hole (53);

The pin (52) is fixed on the lower pressing plate (2) and is movably arranged in the limit guide hole (53).

7. The front-end pre-inspection unit according to claim 2, characterized in that the swing link group (31) comprises a first swing link and a second swing link with swing planes parallel to each other;

the first swing rod and the second swing rod are positioned on opposite sides of the lower pressing plate (2).

8. The front-end pre-detection unit according to claim 1, characterized in that the displacement measurement assembly (4) comprises a displacement sensor (41) and a displacement sensing plate (42);

The displacement sensor (41) is arranged on the bottom plate (1);

The displacement sensing plate (42) is arranged on the lower pressing plate (2) and is arranged towards the displacement sensor (41);

Or, the displacement sensor (41) is arranged on the lower pressing plate (2);

the displacement sensing plate (42) is arranged on the base plate (1) and is arranged towards the displacement sensor (41).

9. The front-end pre-inspection unit according to claim 1, further comprising a snap-in block (6);

the clamping block (6) is arranged on the bottom plate (1) and is provided with a clamping interface matched with the steel rail.

10. An on-line dynamic wheel out-of-roundness detection system, comprising a wheel out-of-roundness detection device and a front-end pre-detection unit according to any one of claims 1 to 9;

the front end pre-detection unit and the wheel out-of-roundness detection device are sequentially arranged at intervals along the travelling direction of the train.