CN214503213U

CN214503213U - Device for on-line measuring rolling contact surface hardness

Info

Publication number: CN214503213U
Application number: CN202120150111.6U
Authority: CN
Inventors: 高伟; 邹强; 宫彦华; 童乐; 江波; 万志健; 毛亚男; 赵秋艳
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-10-26
Anticipated expiration: 2031-01-20

Abstract

The utility model discloses a device of on-line measuring rolling contact surface hardness, include test fixture mechanism and accompany sample axostylus axostyle lid mechanism, test fixture mechanism's bottom is installed and is accompanied sample axostylus axostyle lid mechanism. The device can align the front side and the rear side of the base with the front side and the rear side of the box cover body, the hardness test points can be guaranteed to be the highest points of the measured samples, the left side of the base is aligned with the left side of the box cover body, the test points are the intermediate positions of the contact surfaces of the samples during the hardness test, the ultrasonic hardness meter does not need to be taken down after the measurement is finished, the ultrasonic hardness meter is taken down after the whole measurement is finished, in the repeated measurement process, only the sample shaft needs to be rotated to change the measurement position, the test tool mechanism and the ultrasonic hardness meter do not need to be adjusted, the online continuity can be realized, the stability and the accurate measurement of the hardness of the rolling contact surface can be realized, meanwhile, the ultrasonic hardness meter can also utilize a fastening bolt to be conveniently assembled and disassembled from a limiting clamp.

Description

Device for on-line measuring rolling contact surface hardness

Technical Field

The utility model relates to a track traffic wheel rail contact relation equipment technical field specifically is a device of on-line measurement rolling contact surface hardness.

Background

A disc-shaped sample counter-rolling contact experiment is a main method for researching wheel rail abrasion and rolling contact fatigue, the strain hardening characteristic of the contact surface of the sample is an important parameter for evaluating the abrasion performance and the rolling contact fatigue performance of a material, and the strain hardening characteristic is obtained by obtaining the change of the surface hardness of the sample along with the cycle frequency. The currently common hardness test methods mainly comprise Brinell, Rockwell, Vickers, Richter and ultrasonic methods, etc., wherein the Brinell and Rockwell have large damage to the surface of a workpiece to be tested, the Vickers cost is high, and the Richter hardness test belongs to indirect hardness measurement and has large deviation. With the development of science and technology, the method for testing hardness by using an ultrasonic method is gradually accepted by the industry, the method belongs to a nondestructive testing method, the principle is that the hardness is measured by measuring the change of frequency by using the characteristic that the resonance frequency of a probe changes along with the hardness, the method has little damage to a tested piece, and the surface hardness of a thin workpiece can be measured. This provides the possibility of on-line measurement of the surface hardness of the test specimen during the experiment.

The existing hardness measuring device can not measure the hardness of the contact surface in an online continuous rolling manner mostly, has poor stability, is inconvenient to assemble and disassemble and is inconvenient to adjust the test height.

To these problem and challenges that face, the utility model provides an on-line measuring rolling contact surface hardness's device, it has rolling measuring contact surface hardness precision higher, stability is better, loading and unloading are convenient and test altitude mixture control advantage such as convenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of on-line measuring rolling contact surface hardness, it has that the rolling measurement contact surface hardness precision is higher, stability is better, loading and unloading are convenient and test height adjustment advantage such as convenient to solved traditional hardness measurement device, most can not roll on line in succession and measure contact surface hardness, stability is relatively poor, inconvenient loading and unloading and inconvenient carry out the problem of adjusting to the test height.

In order to achieve the above object, the utility model provides a following technical scheme: a device for measuring the hardness of a rolling contact surface on line comprises a testing tool mechanism and a sample axle box cover accompanying mechanism, wherein the sample axle box cover accompanying mechanism is installed at the bottom end of the testing tool mechanism and comprises a base, a main frame, a long rod and a handle, the main frame is respectively composed of a frame body, a mounting groove and a limiting rod, the front end of the frame body is movably connected with the handle, the long rod is movably installed on the upper end face of the frame body, the bottom end of the long rod penetrates through the mounting groove and is connected with the base, and the sample axle box cover accompanying mechanism is installed at the bottom end of the base;

accompany sample axle case lid mechanism includes case lid and bull stick, and the inboard of bull stick is provided with the sample axle, and the inboard of bull stick passes through sample axle swing joint case lid.

Further, the up end processing of support body has the installation through-hole, and has seted up the mounting groove in the inner chamber of support body, is provided with the gag lever post on the inner chamber bottom surface of mounting groove, and the upper end of gag lever post has set firmly the spring, and installation through-hole, spring and gag lever post and connection base are passed in proper order to the bottom of stock.

Further, the front end outer wall border department of support body is provided with spacing sleeve axle, and the welding has spacing clamp on one side outer wall of support body, and the joint has the ultrasonic wave sclerometer in the inner chamber of spacing clamp.

Further, the bottom of ultrasonic wave sclerometer is provided with the sclerometer pressure head, and the bottom side and the sample axle of sclerometer pressure head are in same vertical line, and the outside of spacing clamp still the spiro union have fastening bolt.

Further, the handle includes rotatory piece of arc and rotatory barre, and one side outer wall border department of the rotatory piece of arc has set firmly rotatory barre, and the surface machining of the rotatory piece of arc has the arc movable groove.

Furthermore, the front end of the limiting sleeve shaft extends into the inner cavity of the arc-shaped movable groove, and the limiting sleeve shaft is movably connected with the arc-shaped movable groove.

Furthermore, the surface of the arc-shaped rotating block is also provided with a rotating hole, the limiting rod is provided with a rotating column at the edge of the outer wall at one side close to the arc-shaped rotating block, and one end of the rotating column extends into the inner cavity of the rotating hole and is movably connected with the rotating hole.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model provides a device for on-line measurement of rolling contact surface hardness, the ultrasonic wave sclerometer is connected with the card in the inner chamber of the spacing clamp, and the bottom side of the sclerometer pressure head is in the same vertical line with the sample shaft, the fastening bolt is also screwed on the outside of the spacing clamp, so that the device can place the testing tool mechanism on the box cover body when testing, the width of the base is consistent with that of the box cover body, only the base needs to be placed on the box cover body before testing, the front side and the back side of the base are aligned with the front side and the back side of the box cover body, thereby ensuring that the hardness test point is the highest point of the measured sample, the left side of the base is aligned with the left side of the box cover body, namely ensuring that the test point is the middle position of the sample contact surface when testing the hardness, after the measurement, the ultrasonic wave sclerometer does not need to be taken down, after the complete measurement, in the repeated measurement process, only need rotate the sample axle change measuring position can, test fixture mechanism and ultrasonic wave sclerometer also need not to adjust, and can realize online continuous, stable, accurate measurement rolling contact surface hardness, the ultrasonic wave sclerometer also can utilize fastening bolt conveniently to load and unload from spacing clamp simultaneously.

2. The utility model provides a pair of on-line measuring device of rolling contact surface hardness, the front end of spacing sleeve axle stretches into in the inner chamber of arc movable groove, swing joint between spacing sleeve axle and the arc movable groove, and the one end of rotary column stretches into in the inner chamber of commentaries on classics hole, make the device can rotate rotatory barre when measuring, utilize rotatory arc movable groove to drive spacing sleeve axle in step and remove, and because the bottom of stock passes mounting groove and connection base, the body frame can freely reciprocate on the stock, can indirectly adjust the descending height of ultrasonic wave sclerometer simultaneously, when making hardness measurement, keep the uniformity of pressure head load, the flexibility is stronger.

3. The utility model provides a pair of device of on-line measurement rolling contact surface hardness is provided with the gag lever post on the inner chamber bottom surface of mounting groove, the upper end of gag lever post has set firmly the spring for after rotating rotatory barre and adjusting the position of ultrasonic wave sclerometer, and because the spring receives relative extrusion force after the test, the compression counter force of its usable spring resets the ultrasonic wave sclerometer, advance to adjust the initial position with the ultrasonic wave sclerometer, also convenient position before measuring next time is reset and is rectified.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a box cover mechanism of the accompanying sample axle box of the present invention;

FIG. 3 is a schematic structural view of the testing tool device of the present invention;

FIG. 4 is a schematic view of the main frame and the handle mounting structure of the present invention;

fig. 5 is a schematic view of the handle structure of the present invention.

In the figure: 1. testing the tool mechanism; 11. a base; 12. a main frame; 121. a frame body; 1211. mounting a through hole; 1212. a limiting sleeve shaft; 1213. a limiting clamp; 12131. fastening a bolt; 1214. an ultrasonic hardness meter; 12141. a durometer indenter; 122. mounting grooves; 123. a limiting rod; 1231. a spring; 1232. turning the column; 13. a long rod; 14. a handle; 141. an arc-shaped rotating block; 1411. an arc-shaped movable groove; 1412. hole turning; 142. rotating the handle bar; 2. a sample accompanying shaft box cover mechanism; 21. a case cover body; 22. a rotating rod; 221. a sample axis.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 3, 4 and 5, a device for measuring the hardness of a rolling contact surface on line includes a testing tool mechanism 1 and an accompanying sample shaft box cover mechanism 2, the bottom end of the testing tool mechanism 1 is provided with the accompanying sample shaft box cover mechanism 2, the testing tool mechanism 1 includes a base 11, a main frame 12, a long rod 13 and a handle 14, the main frame 12 is respectively composed of a frame body 121, a mounting groove 122 and a limiting rod 123, the front end of the frame body 121 is movably connected with the handle 14, the upper end surface of the frame body 121 is movably provided with the long rod 13, the bottom end of the long rod 13 passes through the mounting groove 122 and is connected with the base 11, and the bottom end of the base 11 is provided with the accompanying sample shaft box cover mechanism 2; an installation through hole 1211 is formed in the upper end face of the frame body 121, an installation groove 122 is formed in the inner cavity of the frame body 121, a limiting rod 123 is arranged on the bottom surface of the inner cavity of the installation groove 122, a spring 1231 is fixedly arranged at the upper end of the limiting rod 123, and the bottom end of the long rod 13 sequentially penetrates through the installation through hole 1211, the spring 1231 and the limiting rod 123 and is connected with the base 11; a limiting sleeve shaft 1212 is arranged at the edge of the outer wall of the front end of the frame body 121, a limiting clamp 1213 is welded on the outer wall of one side of the frame body 121, and an ultrasonic sclerometer 1214 is clamped in the inner cavity of the limiting clamp 1213; a hardness tester pressure head 12141 is arranged at the bottom end of the ultrasonic hardness tester 1214, the bottom side of the hardness tester pressure head 12141 and the sample shaft 221 are on the same vertical line, and a fastening bolt 12131 is screwed on the outer side of the limiting clamp 1213; the handle 14 comprises an arc-shaped rotating block 141 and a rotating handle bar 142, the rotating handle bar 142 is fixedly arranged at the edge of the outer wall of one side of the arc-shaped rotating block 141, and an arc-shaped movable groove 1411 is processed on the surface of the arc-shaped rotating block 141; the front end of the limiting sleeve shaft 1212 extends into the inner cavity of the arc-shaped movable groove 1411, and the limiting sleeve shaft 1212 is movably connected with the arc-shaped movable groove 1411; the surface of the arc-shaped rotating block 141 is further provided with a rotating hole 1412, the limiting rod 123 is provided with a rotating column 1232 at the edge of the outer wall of one side close to the arc-shaped rotating block 141, and one end of the rotating column 1232 extends into the inner cavity of the rotating hole 1412 and is movably connected with the rotating hole 1412.

Referring to fig. 2, a device for on-line measuring the hardness of a rolling contact surface, a sample shaft box cover mechanism 2 includes a box cover body 21 and a rotating rod 22, a sample shaft 221 is disposed inside the rotating rod 22, and the inside of the rotating rod 22 is movably connected to the box cover body 21 through the sample shaft 221.

In summary, the following steps: the utility model provides a device for on-line measuring rolling contact surface hardness, the body frame 12 comprises support body 121, mounting groove 122 and gag lever post 123 respectively, the front end swing joint of support body 121 has handle 14, the joint has ultrasonic wave sclerometer 1214 in the inner chamber of spacing clamp 1213, and the bottom side of sclerometer pressure head 12141 is on same vertical line with sample axle 221, the outside of spacing clamp 1213 still spiro union has fastening bolt 12131, make the device when testing, can place test fixture mechanism 1 on case lid body 21, the width of base 11 is unanimous with case lid body 21, only need to place base 11 on case lid body 21 before the test, align front and back side of base 11 with front and back side of case lid body 21, can guarantee that the hardness test point is the measured sample peak, align the left surface of base 11 with the left surface of case lid body 21, can guarantee that the test point is the sample contact surface intermediate position during the hardness test, after the measurement is finished, the ultrasonic hardness meter 1214 does not need to be taken down, the ultrasonic hardness meter 1214 is taken down after the whole measurement is finished, in the repeated measurement process, only the test sample shaft 221 needs to be rotated to change the measurement position, the test tool mechanism 1 and the ultrasonic hardness meter 1214 do not need to be adjusted, the online continuous, stable and accurate measurement of the rolling contact surface hardness can be realized, meanwhile, the ultrasonic hardness meter 1214 can be conveniently assembled and disassembled from the limit clamp 1213 by using the fastening bolt 12131, the front end of the limit sleeve shaft 1212 extends into the inner cavity of the arc movable groove 1411, the limit sleeve shaft 1212 is movably connected with the arc movable groove 1411, one end of the rotary column 1232 extends into the inner cavity of the rotary hole 1412, so that the device can rotate the rotary handle 142 during the measurement, the rotary arc movable groove 1411 synchronously drives the limit sleeve shaft 1212 to move, and because the bottom end of the long rod 13 passes through the installation groove 122 and is connected with the base 11, the main frame 12 can freely move up and down on the long rod 13, and can indirectly adjust the descending height of the ultrasonic sclerometer 1214, when the hardness is measured, the consistency of pressure head load is kept, the flexibility is stronger, the long rod 13 is movably installed on the upper end face of the frame body 121, the bottom end of the long rod 13 penetrates through the installation groove 122 and is connected with the base 11, the limiting rod 123 is arranged on the bottom surface of the inner cavity of the installation groove 122, the spring 1231 is fixedly arranged at the upper end of the limiting rod 123, after the rotating handle rod 142 is rotated to adjust the position of the ultrasonic sclerometer 1214, and after the test is finished, because the spring 1231 bears relative extrusion force, the compression reverse force of the spring 1231 can be utilized to reset the ultrasonic sclerometer 1214, the ultrasonic sclerometer 1214 is adjusted to the initial position, the position before the next measurement is also conveniently reset and corrected, and the box cover mechanism 2 of the test accompanying sample axle box is installed at the bottom end of the base 11, the inside of the rotary rod 22 is provided with a sample shaft 221, and the inside of the rotary rod 22 is movably connected to the case lid body 21 through the sample shaft 221.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device of on-line measuring rolling contact surface hardness, includes test fixture mechanism (1) and accompanies sample axle box lid mechanism (2), and test fixture mechanism's (1) bottom is installed and is accompanied sample axle box lid mechanism (2), its characterized in that: the test tool mechanism (1) comprises a base (11), a main frame (12), a long rod (13) and a handle (14), the main frame (12) is respectively composed of a frame body (121), a mounting groove (122) and a limiting rod (123), the handle (14) is movably connected to the front end of the frame body (121), the long rod (13) is movably mounted on the upper end face of the frame body (121), the bottom end of the long rod (13) penetrates through the mounting groove (122) and is connected with the base (11), and the bottom end of the base (11) is provided with a sample axle box cover accompanying mechanism (2);

accompany sample axle case lid mechanism (2) and include case lid body (21) and bull stick (22), the inboard of bull stick (22) is provided with sample axle (221), and the inboard of bull stick (22) is through sample axle (221) swing joint case lid body (21).

2. The device for on-line measuring the hardness of the rolling contact surface according to claim 1, wherein: the upper end face of support body (121) is processed and is had installation through-hole (1211), and has seted up mounting groove (122) in the inner chamber of support body (121), is provided with gag lever post (123) on the inner chamber bottom surface of mounting groove (122), and the upper end of gag lever post (123) has set firmly spring (1231), and installation through-hole (1211), spring (1231) and gag lever post (123) and connection base (11) are passed in proper order to the bottom of stock (13).

3. The device for on-line measuring the hardness of the rolling contact surface according to claim 1, wherein: the front end outer wall border department of support body (121) is provided with spacing sleeve axle (1212), and welds on the one side outer wall of support body (121) and has spacing clamp (1213), and the joint has ultrasonic wave sclerometer (1214) in the inner chamber of spacing clamp (1213).

4. The device for on-line measuring the hardness of a rolling contact surface according to claim 3, wherein: the bottom of ultrasonic wave sclerometer (1214) is provided with sclerometer pressure head (12141), and the downside and sample axle (221) of sclerometer pressure head (12141) are in same vertical line, and the outside of spacing clamp (1213) has still spiro union to have fastening bolt (12131).

5. The device for on-line measuring the hardness of the rolling contact surface according to claim 1, wherein: the handle (14) comprises an arc-shaped rotating block (141) and a rotating handle rod (142), the rotating handle rod (142) is fixedly arranged at the edge of the outer wall of one side of the arc-shaped rotating block (141), and an arc-shaped movable groove (1411) is formed in the surface of the arc-shaped rotating block (141).

6. The device for on-line measuring the hardness of a rolling contact surface according to claim 3, wherein: the front end of the limiting sleeve shaft (1212) extends into the inner cavity of the arc-shaped movable groove (1411), and the limiting sleeve shaft (1212) is movably connected with the arc-shaped movable groove (1411).

7. The device for on-line measuring the hardness of the rolling contact surface according to claim 5, wherein: the surface of the arc-shaped rotating block (141) is further provided with a rotating hole (1412), the limiting rod (123) is provided with a rotating column (1232) at the edge of the outer wall of one side close to the arc-shaped rotating block (141), and one end of the rotating column (1232) extends into the inner cavity of the rotating hole (1412) and is movably connected with the rotating hole (1412).