CN114923799A

CN114923799A - Steel rail passive rapid grinding stone performance test bed and test method

Info

Publication number: CN114923799A
Application number: CN202210492301.5A
Authority: CN
Inventors: 郭猛刚
Original assignee: Beijing Tiefu Track Maintenance Technology Co ltd
Current assignee: Beijing Tiefu Track Maintenance Technology Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-08-19

Abstract

The application relates to the technical field of rapid grinding of steel rails, in particular to a passive rapid grinding stone performance test bed and a test method for steel rails, which comprise the following steps: the workpiece rotating assembly comprises a rotating support, a disc workpiece and a rotating drive; the grinding stone propelling component comprises a base, a propelling support, a propelling drive and a grinding stone; the data acquisition assembly comprises a first sensor, a second sensor, a third sensor and a fourth sensor; and a test control component. By the arrangement, the grinding performances of the grindstones of different batches and different models can be compared, and the manufacturing and production process of the grindstone can be guided; through tests, the performance test and evaluation of the grindstone, the formulation of a field grinding process and a grinding construction scheme is guided to a certain extent; a plurality of sensing devices are arranged, and the full-automatic control and process monitoring of the test can be realized through a test control assembly.

Description

Steel rail passive rapid grinding stone performance test bed and test method

Technical Field

The application relates to the technical field of steel rail quick polishing, in particular to a steel rail passive quick polishing grindstone performance test bed and a test method.

Background

The rail rapid grinding technology is mainly applied to pre-grinding, preventive grinding and repair grinding of the rails, rail surface damage can be eliminated or reduced by performing preventive grinding on the rails, generation and development of rail surface diseases such as contact fatigue and corrugation are prevented or slowed down, the service life of the rails is prolonged, and the contact relationship between the wheels and the rails is in a reasonable range for a long time.

The HSG-2 steel rail quick grinding wagon used internationally at present adopts a passive grinding mode in a steel rail quick grinding technology, a grinding stone and a steel rail are set to be at a fixed angle, the grinding stone and the steel rail are buckled and pressed on a rail surface according to set pressure, when a grinding machine set is dragged to run, a grinding wheel rotates, meanwhile, relative motion with the rail surface is generated, and grinding effect is generated on the steel rail through the relative motion. The rail rapid grinding wagon realizes the full-coverage grinding of the rail head of the rail by adjusting the grinding path of each grinding trolley, namely the grinding position of the rail head, and can also select key rail corner grinding to eliminate rail head cracks or key rail top grinding to eliminate wave-shaped abrasion. Therefore, the rapid polishing mode can be adjusted according to the polishing purpose, and the set target is realized.

The steel rail rapid grinding technology is used as an important supplement of the current active grinding technology. The process research of the passive grinding technology is not deeply developed, and meanwhile, the passive grinding grindstone mainly comes from import, the grinding performance of each batch of grindstone cannot be checked and judged domestically, and a mature test bed can truly simulate the grinding working condition to verify the grindstone, so that the performance of the conventional passive grinding grindstone is not evaluated and checked well, and the field grinding quality is easily influenced by the change of the grinding stone performance; if unqualified batches of grindstones are directly used in a construction site, the grindstones are cracked in actual engineering application, and the grinding amount does not meet the requirements and other conditions.

Although passive grinding mechanism is researched and a rapid grinding mechanism test bed is trial-manufactured in China, the test bed is mainly used for researching the passive grinding mechanism, the grinding performance of the grinding stone cannot be tested based on the practical grinding working condition, and meanwhile, no test method for passive rapid grinding of the grinding stone exists at present.

Therefore, how to solve the problem that the existing rapid grinding mechanism test bed cannot test the grinding performance of the grinding stone based on the actual grinding working condition is a key technical problem to be solved by technical personnel in the field.

Disclosure of Invention

For overcoming the problem that exists in the correlation technique to a certain extent at least, the utility model aims to provide a rail passive form quick grindstone performance test bench and test method that polishes, it can solve the problem that the evaluation of current quick mechanism test bench of polishing to the grinding performance of grindstone can't test based on the operating mode of polishing of reality. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the application are described in detail in the following.

The application provides a passive quick grindstone performance test platform that polishes of rail includes:

the workpiece rotating assembly comprises a rotating support, a disc workpiece and a rotary drive, wherein the disc workpiece is rotatably connected to the rotating support, and the rotary drive is used for driving the disc workpiece to rotate;

the grinding stone propelling component comprises a base, a propelling support arranged on the base in a displacement manner, a propelling drive used for driving the propelling support to be close to or far away from the disc workpiece, and a grinding stone which is arranged on the propelling support and can be abutted against the annular grinding surface of the disc workpiece;

the data acquisition assembly comprises a first sensor for acquiring the thickness of the annular polishing surface, a second sensor for acquiring the number of revolutions of the disc workpiece, a third sensor for acquiring the displacement of the propelling support relative to the base, and a fourth sensor for acquiring the pressure between the grinding stone and the annular polishing surface;

a test control assembly in communication with the rotary drive, the propulsion drive, the first sensor, the second sensor, the third sensor, and the fourth sensor.

Preferably, the propulsion drive comprises a hydraulic loading cylinder, the hydraulic loading cylinder is connected with a hydraulic system through an electromagnetic overflow valve, and the electromagnetic overflow valve is in communication connection with the test control assembly.

Preferably, a stopper for limiting the displacement of the propelling support is arranged on the base on one side of the propelling support close to the disc workpiece, and a fifth sensor in communication connection with the test control assembly is arranged on the stopper.

Preferably, the grindstone is attached to the thrust bearing by a mounting block, the mounting block including:

the mounting bracket is provided with a mounting groove for embedding and mounting the grinding stone, and the bottom of the mounting groove is provided with at least two fixing holes;

the positioning seat is provided with a plurality of positioning structures which are arranged along a circular ring shape;

wherein, the fixed orifices are opposite to each positioning structure and are connected by a fastener.

Preferably, the grinding stone advancing assembly is provided with at least two groups, and a plurality of grinding stones are uniformly distributed relative to the annular grinding surface.

Preferably, the annular polishing surface is positioned on the outer peripheral surface of the disc workpiece;

alternatively, the annular polishing surface is located at a side edge of the disc workpiece.

Preferably, one of the propelling support and the base is provided with a slide rail, and the other one of the propelling support and the base is provided with a slide groove, and the slide rail is slidably arranged in the slide groove.

Preferably, a bearing seat is arranged on the base, the hydraulic loading cylinder is connected between the propelling support and the bearing seat, the extending direction of the hydraulic loading cylinder is consistent with the displacement direction of the propelling support, and the third sensor is arranged between the propelling support and the bearing seat.

Preferably, a spraying device is arranged at the positions of the grinding stone and the annular grinding surface.

The application also provides a rail passive rapid grinding and stone performance test method, based on any one of the above rail passive rapid grinding and stone performance test stand, including:

acquiring the workpiece grinding amount of the annular grinding surface of the disc workpiece through a first sensor;

acquiring the revolution of the disc workpiece through a second sensor, and obtaining the workpiece grinding mileage of the annular grinding surface, wherein the workpiece grinding mileage is equal to the diameter pi of the annular grinding surface;

acquiring the consumption of the grinding stone through a third sensor and a fourth sensor;

obtaining the service life of the grinding stone according to the consumption of the grinding stone and the grinding mileage of the workpiece;

obtaining a workpiece grinding rate according to the workpiece grinding amount and the grinding stone consumption, wherein the workpiece grinding rate is the workpiece grinding amount/the grinding stone consumption;

obtaining a grinding wheel grinding rate according to the grinding amount of the workpiece and the grinding wheel consumption, wherein the grinding wheel grinding rate is the grinding wheel consumption/the workpiece grinding amount;

and obtaining the grinding stone consumption rate according to the grinding stone consumption and the workpiece grinding mileage, wherein the grinding stone consumption rate is equal to the grinding stone consumption/the workpiece grinding mileage.

The technical scheme provided by the application can comprise the following beneficial effects:

the grinding performance of the grindstones of different batches and different models can be compared, and the manufacturing and production process of the grindstone can be guided; through tests, the performance test and evaluation of the grindstone, the formulation of a field grinding process and a grinding construction scheme is guided to a certain extent; a plurality of sensing devices are arranged, and the full-automatic control and process monitoring of the test can be realized through a test control assembly. The invention provides an evaluation system of a rapid passive grinding stone, and compared with the acceptance standard of the traditional grinding wheel, the invention provides three new grinding stone evaluation acceptance indexes of the service life of the grinding stone, the grinding rate of a workpiece and the consumption rate of the grinding stone. The test bed and the test evaluation method can be used for checking and accepting the performance of the grinding stone.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of the present rail passive rapid sharpening stone performance test stand, according to some exemplary embodiments;

FIG. 2 is a block diagram illustrating a workpiece rotation assembly, according to some exemplary embodiments;

FIG. 3 is a top view of the present rail passive rapid sharpening stone performance test stand, according to some exemplary embodiments;

FIG. 4 is a top view of the present rail passive rapid sharpening grinding stone performance test stand according to further exemplary embodiments;

FIG. 5 is a control flow diagram of a test control assembly shown in accordance with some exemplary embodiments;

FIG. 6 is a front view of a mount shown in accordance with some exemplary embodiments;

FIG. 7 is a side view of a mount shown in accordance with some exemplary embodiments;

FIG. 8 is a schematic view of a positioning structure shown in accordance with some exemplary embodiments;

FIG. 9 is a schematic illustration of a positioning structure shown according to other exemplary embodiments.

In the figure: 1. mounting a bracket; 2. positioning seats; 3. a fixing hole; 4. a positioning structure; 5. positioning the shaft; 6. a shaft hole; 7. connecting grooves; 8. fixing the pressing plate; 9. a rotating shaft; 10. a bearing; 11. rotating the support; 12. a disc workpiece; 13. a drive motor; 14. a transmission; 21. a base; 22. a pushing support; 23. a hydraulic loading cylinder; 24. a mounting seat; 25. a stopper; 26. a guide rail; 27. a chute; 31. a first sensor; 32. a second sensor; 33. a third sensor.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus or methods consistent with aspects of the present application.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1 to 9, the present embodiment provides a rail passive rapid grinding and grinding performance test bed, which includes a workpiece rotating assembly, a grinding stone propelling assembly, a data acquisition assembly and a test control assembly.

The workpiece rotating assembly comprises a rotating support 11, a disc workpiece 12 and a rotary drive, wherein the disc workpiece 12 is rotatably connected to the rotating support 11 and drives the disc workpiece 12 to rotate through the rotary drive, specifically, the rotary drive comprises a driving motor 13 and a transmission 14, and the rotating speed of the disc workpiece 12 is controlled through controlling the transmission 14.

The disc workpiece 12 is provided with an annular polishing surface which rotates concentrically and coaxially with the disc workpiece 12 to ensure that the grindstones can always abut against each other.

The grinding stone propelling component comprises a base 21, a propelling support 22, a propelling drive and a grinding stone, wherein the propelling support 22 is arranged on the base 21 in a displacement manner, and the propelling support 22 is driven to be close to or far away from the disc workpiece 12 by the propelling drive; the grindstone is arranged on the pushing support 22, and can be pressed against the annular polishing surface of the disc workpiece 12 under the driving of the pushing support 22, and meanwhile, the relative position of the grindstone relative to the annular polishing surface can be adjusted through pushing driving.

The data acquisition assembly includes a first sensor 31, a second sensor 32, a third sensor 33, and a fourth sensor. The first sensor 31 is used for acquiring the thickness of the annular polishing surface, and the workpiece grinding amount is obtained through the front-back change of the thickness of the annular polishing surface.

The second sensor 32 is used for acquiring the revolution of the disc workpiece 12, the second sensor 32 may include a counting sensor fixed on the rotating support 11 and a sensing device on the disc workpiece 12, the sensing device is matched with the counting sensor, the counting sensor can be periodically scanned during the rotation of the disc workpiece 12 to count the revolution of the disc workpiece 12, and the grinding working mileage, i.e. the workpiece grinding mileage, of the disc workpiece 12 acting on a grinding stone can be further obtained through the reference radius size of the annular grinding surface of the disc workpiece 12.

The third sensor 33 is used for gathering the displacement volume of advancing support 22 for base 21, and the fourth sensor is used for gathering pressure between grindstone and the annular polished surface, and when pressure was stable between grindstone and the annular polished surface, was in the state of polishing, reachs the displacement volume under the state of polishing through third sensor 33, can reachs the grindstone consumption.

The test control assembly is in communication connection with the rotation drive, the propulsion drive, the first sensor 31, the second sensor 32, the third sensor 33 and the fourth sensor, and full-automatic control and process monitoring of a test can be achieved through the test control assembly.

By the arrangement, the grinding performances of the grindstones of different batches and different models can be compared, and the manufacturing and production process of the grindstone can be guided; through tests, the performance test and evaluation of the grindstone, the formulation of a field grinding process and a grinding construction scheme is guided to a certain extent; a plurality of sensing devices are arranged, and the full-automatic control and process monitoring of the test can be realized through a test control assembly.

In some embodiments, the propulsion drive comprises a hydraulic loading cylinder 23, the hydraulic loading cylinder 23 is connected to the hydraulic system through an electromagnetic relief valve, the electromagnetic relief valve is in communication with the test control assembly, a fourth sensor is provided as a pressure sensing device between the hydraulic loading cylinder 23 and the hydraulic system, the pressure between the grindstone and the annular sanding surface is adjusted by hydraulic pressure, and the electromagnetic relief valve and the pressure sensor form a pressure control unit for pressure control of the propulsion seat 22. In this way, the loading pressure of the hydraulic loading cylinder 23 can be controlled by the test control assembly and the pressure fluctuation change can be displayed in real time, so that the loading pressure of the hydraulic loading cylinder 23 is in a stable range.

The base 21 is provided with a bearing seat, the hydraulic loading cylinder 23 is connected between the propelling support 22 and the bearing seat, and the extending direction is consistent with the displacement direction of the propelling support 22, so that the maximum utilization of the driving force can be ensured.

The third sensor 33 is arranged between the pushing support 22 and the bearing seat, and here, the third sensor 33 is arranged as a displacement sensor, so that the displacement can be obtained through the displacement between the pushing support 22 and the bearing seat, and the device is convenient and reliable.

The lower part of the hydraulic cylinder is provided with the mounting support, so that the height can be adjusted, and the longitudinal mounting precision is ensured.

In some embodiments, the base 21 is provided with a stopper 25, the stopper 25 is located on one side of the pushing support 22 close to the disc workpiece 12 for limiting the displacement of the pushing support 22, and since the grinding stone is rigidly connected with the pushing support 22 through the mounting seat 24, the stopper 25 also limits the maximum consumption size of the grinding stone, thereby ensuring the accuracy and safety of the test. In particular, when the disc workpiece 12 is somewhat consumed in accordance with the size of the number of tests, the maximum consumption size of the grindstone can be adjusted by the spacer between the mounting seat 24 and the thrust bearing 22.

The stopper 25 is provided with a fifth sensor which is in communication connection with the test control assembly, specifically, the fifth sensor is a pressure sensing device, when the propulsion support 22 reaches the maximum displacement, the pressure sensing device is triggered, the test is automatically stopped, and the pressure sensing device is connected through the test control assembly and can simultaneously finish the data acquisition work of other sensors.

In the preferred scheme, the grindstone propulsion assembly is provided with at least two sets of, and a plurality of grindstones are for annular polished surface evenly distributed, through the grindstones with a plurality of different angles simultaneously act on disc work piece 12, and symmetrical arrangement, and are more anastomotic with real operating mode, better simulation the grinding mechanism that passive form was polished fast, and improved the stability of test bench.

Here, the stone advancing assemblies are preferably two sets.

As shown in fig. 3, the annular polishing surface is located on the outer peripheral surface of the disc workpiece 12, and correspondingly, the grinding stone is tangent to the outer peripheral surface of the disc workpiece 12, so that when the grinding stone applies force to the disc workpiece 12, the balance of the disc workpiece 12 can be ensured. The first sensor 31 is located below the disc workpiece 12.

Of course, as shown in FIG. 4, the annular sanding surface is located at the side edge of the disc workpiece 12, and the grindstone is abutted against the side edge of the disc workpiece 12. The first sensor 31 is located on the side of the disc workpiece 12.

In some preferred embodiments, one of the pushing support 22 and the base 21 is provided with a guide rail 26, the other is provided with a sliding groove 27, and the guide rail 26 is slidably disposed in the sliding groove 27. Specifically, the guide rail 26 arranged at the lower part of the propelling support 22 is matched with the sliding groove 27 on the base 21, so that the propelling support 22 only has the freedom degree along the propelling direction, and the pressure is ensured to be transmitted along a straight line.

The spraying devices are arranged at the positions of the grinding stone and the annular grinding surface, so that the influence of rain and snow weather on the grinding performance of the grinding stone in practice can be simulated.

In some embodiments, the grinding stone is connected to the propelling support 22 through the mounting seat 24, the mounting seat 24 is capable of adjusting the attack angle between the grinding stone and the workpiece, the mounting seat 24 is rigidly connected to the propelling support 22 through a bolt, the rotation angle between the grinding stone and the propelling support 22 can be adjusted, the grinding attack angle between the grinding stone and the workpiece is determined, and the attack angle is set to be 60 degrees in the default condition and is consistent with the actual condition of the grinding stone on the rail surface of the HSG-2 grinding vehicle. When the grindstones with other dimensions are tested, the angle of attack of the grindstone can be adjusted.

As shown in fig. 6-9, the mounting seat comprises a mounting bracket 1 and a positioning seat 2.

The mounting bracket 1 is provided with a mounting groove for the grindstone to be embedded and mounted on the mounting bracket 1, and the mounted grindstone is axially perpendicular to two side walls of the mounting groove. Meanwhile, the positioning seat 2 is connected with the pushing support, and passive rapid polishing or testing can be achieved by controlling the grindstone.

The tank bottom of mounting groove is provided with two at least fixed orificess 3, and here, the quantity of fixed orifices 3 sets up to two, and is located the both ends position of mounting groove respectively.

The positioning seat 2 is provided with a plurality of positioning structures 4, and the plurality of positioning structures 4 are arranged along a circular ring shape, so that the plurality of positioning holes are located on the same circle.

Wherein the fixing holes 3 are opposite to the respective positioning structures 4 and are connected by means of fasteners. When the angle-adjustable grinding stone is used, the angle of the mounting bracket 1 relative to the positioning seat 2 is changed by different positioning structures 4 correspondingly connected with the fixing holes 3 or different positions, and then the attack angle of the grinding stone is changed.

Specifically, the fixing hole 3 and the positioning structure 4 are respectively located on two opposite end surfaces of the mounting bracket 1 and the positioning seat 2, and the fastening member may be located inside the fixing hole 3 and the positioning hole for connection and fixation.

So set up, can realize the nimble adjustment of stone whetting angle, overall structure's rigid connection when guaranteeing to polish simultaneously improves the reliability of structure.

As shown in fig. 8, the positioning structure 4 is configured as a positioning hole, so that a plurality of positioning holes are arranged on the positioning seat 2 along a circular ring shape, and the diameter of the positioning hole matches with that of the fixing hole 3, so as to facilitate the connection and fixation of the fastening piece.

Specifically, the fastener can be set as a bolt and is arranged in the positioning hole and the fixing hole 3 in a penetrating way; the positioning holes can also be arranged in a blind hole mode, are internally provided with connecting threads and are connected through bolts.

The number of the positioning holes can be set to be 18, so that the offset angle between the adjacent positioning holes is 10 degrees, and the adjustment and control of the attack angle of the grinding stone are facilitated.

In other preferred schemes, as shown in fig. 9, the positioning structure 4 is provided as an arc-shaped groove, so that a plurality of arc-shaped grooves are arranged on the positioning seat 2 along a circular ring shape, and the width of the arc-shaped groove is matched with the fixing hole 3, so as to adjust the connection position of the fastener and change the attack angle of the grinding stone.

Specifically, the fastener can be a bolt which is arranged in the arc-shaped groove and the fixing hole 3 in a penetrating manner; the arc-shaped groove can also be set to be a trapezoid groove, and the head of the bolt is arranged in the arc-shaped groove and slides along the arc-shaped groove.

Wherein, the arc wall is provided with two to respectively with two fixed orificess 3 facings, can realize the angle of attack of electrodeless regulation grindstone.

In order to guarantee the relative pivoted stability of installing support 1 and positioning seat 2, one side that installing support 1 kept away from the mounting groove is provided with location axle 5, location axle 5 is provided with shaft hole 6, shaft hole 6 is in location structure 4's circular, location axle 5 rotatably inlays in shaft hole 6, like this, through the form of positioning seat 2 and shaft hole 6, can realize that installing support 1 and positioning seat 2 rotationally connect, and rotate back fixed orifices 3 still with location structure 4 for, can not take place the skew dislocation.

In particular, the positioning shaft 5 is provided in a cylindrical shape and is rigidly connected to the mounting bracket 1.

In some preferred embodiments, the grinding stone is connected to the shaft 9 by a bearing 10 so that the grinding stone can rotate relative to the shaft 9. The relative both sides wall of mounting groove is provided with connection structure, and the end connection of pivot 9 is in connection structure, and then rotationally connects the grindstone in the mounting groove, and is firm reliable.

Wherein, connection structure includes spread groove 7 and fixed pressing plate 8, and spread groove 7 is located the mounting groove lateral wall to keep away from the tank bottom of mounting groove, so that pivot 9 can block in spread groove 7, and fixed pressing plate 8 is connected in installing support 1 simultaneously, and with pivot 9 spacing in spread groove 7, and then realize two end fixing of pivot 9, convenient and reliable, the dismouting of being convenient for.

Here, the fixed pressing plate 8 is connected with the mounting bracket 1 through a bolt, so that the fixed pressing plate 8 can be conveniently detached.

In order to prevent the rotating shaft 9 from rotating relative to the mounting bracket 1, an anti-rotation plane is arranged between the fixed pressing plate 8 and the rotating shaft 9 or between the connecting groove 7 and the rotating shaft 9, namely the anti-rotation plane can be arranged on the fixed pressing plate 8 and the rotating shaft 9 or on the connecting groove 7 and the rotating shaft 9, so that the contact between the fixed pressing plate and the rotating shaft 9 is non-circular surface contact.

Specifically, the shape of the connecting groove 7 matches with the shape of the end of the rotating shaft 9, and both are provided with a non-circular shape, such as a polygon, so that the rotating shaft 9 can be naturally embedded into the connecting groove 7.

The application also provides a rail passive quick grindstone performance test method of polishing, based on as last rail passive quick grindstone performance test platform, include:

acquiring the workpiece grinding amount of the annular grinding surface of the disc workpiece 12 through a first sensor 31;

wherein, the workpiece grinding amount is the diameter size change of the disc workpiece 12 before and after grinding or the height change of the bottom end of the workpiece, and is used for evaluating the grinding performance of the grinding stone.

Acquiring the revolution of the disc workpiece 12 through a second sensor 32, and obtaining the workpiece grinding mileage of the annular grinding surface, wherein the workpiece grinding mileage is the diameter pi of the annular grinding surface;

the workpiece grinding mileage is a working mileage of a grinding stone actually generating a grinding action with the disc workpiece 12, and is used for evaluating a consumption rate of the grinding stone.

The consumption of the grinding stone is obtained through the third sensor 33 and the fourth sensor;

the consumption of the grinding stone can be characterized by the consumption quality or diameter change of the grinding stone, and the consumption condition of the grinding stone is evaluated.

wherein, the service life of the grinding stone is the grinding range of the workpiece when the grinding stone is completely consumed.

the index evaluates the grinding performance of the grinding stone, represents the cutting amount of the grinding stone under the unit grinding stone consumption, carries out lower limit management on the value, and cannot ensure the grinding quality of the grinding stone if the index is too low.

this index evaluates the grinding performance of the grindstone. And (4) representing the consumption of the grinding stone under the grinding amount of a unit workpiece. The upper limit management is carried out on the value, the grinding stone grinding rate specifies the upper limit value, the grinding stone can be guaranteed not to be quickly consumed when the workpiece is ground, and therefore the service life is guaranteed.

And obtaining the grinding stone consumption rate according to the grinding stone consumption and the workpiece grinding mileage, wherein the grinding stone consumption rate is equal to the grinding stone consumption per the workpiece grinding mileage.

The index can also be used for evaluating the consumption rate of the grinding stone and the consumption of the grinding stone under unit grinding mileage, and whether the internal quality of the grinding stone is stable or not can be evaluated through continuous acquisition of the consumption of the grinding stone and the grinding mileage data of a workpiece and the continuous consumption rate of the grinding stone.

By the arrangement, an evaluation system of the passive rapid grinding grindstone is provided, and compared with the acceptance standard of the traditional grinding wheel, three new grindstone evaluation acceptance indexes of the service life of the grindstone, the grinding rate of a workpiece and the consumption rate of the grindstone are invented.

It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like as used herein, are intended to indicate an orientation or positional relationship relative to that shown in the drawings, but are merely used to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description herein, it is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar contents in other embodiments may be referred to for the contents which are not described in detail in some embodiments. The multiple schemes provided by the application comprise basic schemes of the schemes, are independent of each other and are not restricted to each other, but can be combined with each other under the condition of no conflict, so that multiple effects are achieved together.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims

1. The utility model provides a quick grindstone performance test platform of polishing of rail passive form which characterized in that includes:

the workpiece rotating assembly comprises a rotating support (11), a disc workpiece (12) which is rotatably connected to the rotating support (11) and a rotary drive which is used for driving the disc workpiece (12) to rotate;

the grinding stone propelling assembly comprises a base (21), a propelling support (22) which is arranged on the base (21) in a displacement manner, a propelling drive which is used for driving the propelling support (22) to be close to or far away from the disc workpiece (12), and a grinding stone which is arranged on the propelling support (22) and can be abutted against the annular grinding surface of the disc workpiece (12);

the data acquisition assembly comprises a first sensor (31) for acquiring the thickness of the annular polishing surface, a second sensor (32) for acquiring the number of revolutions of the disc workpiece (12), a third sensor (33) for acquiring the displacement of the pushing support (22) relative to the base (21) and a fourth sensor for acquiring the pressure between the grinding stone and the annular polishing surface;

a test control assembly in communication with the rotary drive, the propulsion drive, the first sensor (31), the second sensor (32), the third sensor (33), and the fourth sensor.

2. The steel rail passive rapid grinding and grinding stone performance test bed according to claim 1, wherein the propulsion drive comprises a hydraulic loading cylinder (23), the hydraulic loading cylinder (23) is connected with a hydraulic system through an electromagnetic overflow valve, and the electromagnetic overflow valve is in communication connection with the test control assembly.

3. The steel rail passive rapid grinding and grinding performance test bed according to claim 1, characterized in that a limit stopper (25) for limiting the displacement of the propulsion support (22) is arranged on one side of the propulsion support (22) close to the disc workpiece (12) on the base (21), and a fifth sensor in communication connection with the test control component is arranged on the limit stopper (25).

4. A rail passive rapid sharpening stone performance test bench according to claim 1, characterized in that the stone is connected to the thrust bearing (22) by a mounting seat (24), the mounting seat (24) comprising:

wherein, the fixing hole is opposite to each positioning structure and is connected with the positioning structure through a fastener.

5. The steel rail passive rapid grinding and polishing stone performance test bed according to claim 1, wherein at least two groups of the grinding stone propulsion assemblies are provided, and a plurality of grinding stones are uniformly distributed relative to the annular grinding surface.

6. The rail passive rapid grinding and polishing performance test bed according to claim 1, wherein the annular grinding surface is located on the outer peripheral surface of the disc workpiece (12);

alternatively, the annular sanding surface is located at a lateral edge of the disc workpiece (12).

7. A rail passive rapid sharpening stone performance test bench according to claim 1, characterized in that the pushing support (22) and the base (21) are provided with a guide rail (26) on one and a slide groove (27) on the other, the guide rail (26) being slidably arranged in the slide groove (27).

8. A rail passive rapid grinding and polishing capability test bed according to claim 2, wherein a bearing seat is provided on the base (21), the hydraulic loading cylinder (23) is connected between the pushing support (22) and the bearing seat, and the extending direction of the hydraulic loading cylinder is consistent with the displacement direction of the pushing support (22), and the third sensor (33) is provided between the pushing support (22) and the bearing seat.

9. The steel rail passive rapid grinding and polishing stone performance test bed according to claim 1, wherein a spraying device is arranged at the positions of the grinding stone and the annular grinding surface.

10. A rail passive rapid grinding stone performance test method based on the rail passive rapid grinding stone performance test bed of any one of claims 1 to 9, characterized by comprising:

acquiring the workpiece grinding amount of the annular grinding surface of the disc workpiece (12) through a first sensor (31);

acquiring the revolution of the disc workpiece (12) through a second sensor (32), and obtaining the workpiece grinding mileage of the annular grinding surface, wherein the workpiece grinding mileage is equal to the diameter pi of the annular grinding surface;

acquiring the consumption of the grinding stone through a third sensor (33) and a fourth sensor;

obtaining a grinding wheel grinding rate according to the grinding amount of the workpiece and the grinding wheel consumption, wherein the grinding wheel grinding rate is the grinding wheel consumption/the grinding amount of the workpiece;