CN215768075U - Portable steel rail hardness measuring instrument - Google Patents
Portable steel rail hardness measuring instrument Download PDFInfo
- Publication number
- CN215768075U CN215768075U CN202121676257.0U CN202121676257U CN215768075U CN 215768075 U CN215768075 U CN 215768075U CN 202121676257 U CN202121676257 U CN 202121676257U CN 215768075 U CN215768075 U CN 215768075U
- Authority
- CN
- China
- Prior art keywords
- rail
- hardness
- measuring instrument
- rail head
- portable steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000005259 measurement Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model discloses a portable steel rail hardness measuring instrument, which comprises a rail web support, a rail head measuring frame and a hardness tester arranged on the rail head measuring frame, wherein a guide groove is formed in the rail head measuring frame, and the hardness tester is arranged on a sliding block of the guide groove; the slider slides in the guide way so as to drive the hardness tester to slide along the outer contour surface of the rail head. The portable steel rail hardness measuring instrument can accurately position and measure, is convenient to use, can measure the hardness of any position of a rail head in the length direction of a steel rail, and provides the measuring efficiency.
Description
Technical Field
The utility model relates to the technical field of steel rail head hardness measurement, in particular to a portable steel rail hardness measuring instrument.
Background
With the rapid development of the railway industry in China, the steel rail is subjected to work hardening due to continuous friction of wheel rails in the using process, the hardness of a steel rail matrix is unchanged, the hardness of the surface layer of the steel rail is continuously improved, the steel rail loses plasticity after the hardness of the steel rail rises to a certain value, the steel rail is peeled from the steel rail matrix under the rolling action of wheels, and massive peeling pit defects are locally formed on the surface of the steel rail, so that the steel rail is damaged, and potential safety hazards are brought to formation. Through the accurate detection to using rail surface hardness on line, when rail top layer hardness is higher than rail base member hardness certain proportion, can adopt the mode of polishing to the rail surface to eliminate the sclerosis layer, avoid causing the rail to peel off and fall the piece to improve rail life and security. At present, a common hardness meter is adopted on a railway to measure the hardness change of a steel rail wheel rail contact surface, the measurement precision is low, the stability of the operation process is poor, and particularly, the steel rail moment angular contact surface of a curve section cannot be measured.
Disclosure of Invention
The utility model aims to provide a portable steel rail hardness measuring instrument which can accurately position and measure and is convenient to use aiming at the defects of the technology.
In order to achieve the purpose, the portable steel rail hardness measuring instrument comprises a rail waist support, a rail head measuring frame and a hardness tester arranged on the rail head measuring frame, wherein a guide groove is formed in the rail head measuring frame, and the hardness tester is arranged on a sliding block of the guide groove; the slider slides in the guide way so as to drive the hardness tester to slide along the outer contour surface of the rail head.
Furthermore, the surface of the rail head measuring frame, which is in contact with the rail head, is consistent with the outer contour surface of the rail head, and the guide track of the guide groove is consistent with the outer contour surface of the rail head.
Further, the hardness tester is installed on the sliding block of the guide groove through a cushion block.
Further, still include and arrange the gyro wheel on the rail web support through the axle, the shaft hole has been seted up along gyro wheel axis direction on the gyro wheel, and the axle includes two minor axises and connects the spring of two minor axises, and the axle passes the shaft hole of gyro wheel, and the minor axis bottom of bottom inserts the bottom shaft hole of rail web support, and the minor axis at top passes through the spring compression return and inserts the top shaft hole of rail web support.
Furthermore, the contact surface of the rail waist support and the rail waist is consistent with the contour surface of the rail waist.
Furthermore, the radian of the outer circumferential surface of the roller is consistent with the radian of the middle arc of the rail web.
Furthermore, a waist-shaped hole for a hand to extend into is formed in the rail waist support.
Compared with the prior art, the utility model has the following advantages: the portable steel rail hardness measuring instrument can accurately position and measure, is convenient to use, can measure the hardness of any position of a rail head in the length direction of a steel rail, and provides the measuring efficiency.
Drawings
FIG. 1 is a schematic structural view of a portable steel rail hardness measuring instrument according to the present invention;
FIG. 2 is a schematic view of the central axis of FIG. 1;
fig. 3 is a schematic view of the use process of fig. 1.
Wherein: the rail web comprises a rail web support 1, a rail head measuring frame 2, a guide groove 3, a hardness meter 4, a rail head 5, a rail web 6, a roller 7, a web-shaped hole 8, a spring 9 and a short shaft 10.
Detailed Description
The utility model is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, the portable steel rail hardness measuring instrument comprises a rail waist support 1, a rail head measuring frame 2, a roller 7 arranged on the rail waist support 1 through a shaft, and a hardness tester 4 arranged on the rail head measuring frame 2. The contact surface of the rail head measuring frame 2 and the rail head 5 is consistent with the outer contour surface of the rail head, a guide groove 3 is formed in the rail head measuring frame 2, and a hardness tester 4 is installed on a sliding block of the guide groove 3 through a cushion block; and the guide track of the guide groove 3 is consistent with the outer contour surface of the rail head 5, and the slide block slides in the guide groove 3 so as to drive the hardness tester 4 to slide along the outer contour surface of the rail head 5.
The shaft hole has been seted up along the gyro wheel axis direction on the gyro wheel 7, and the axle includes two minor axis 10 and connects the spring 9 of two minor axis 10, and the axle passes the shaft hole of gyro wheel 7, and the minor axis 10 bottom of bottom inserts the bottom shaft hole of rail web support 1, presses the minor axis 10 at top and makes the spring 9 compression, goes into gyro wheel 7 card in the gyro wheel mounting groove of rail web support 1, and the return through spring 9 inserts the top shaft hole of rail web support 7 with the minor axis 10 at top. Meanwhile, the contact surface of the rail web bracket 1 and the rail web 6 is consistent with the contour surface of the rail web 6, and the radian of the outer circumferential surface of the roller 7 is consistent with the radian of the middle arc of the rail web 6.
The rail waist support 1 is provided with a waist-shaped hole 8 for a hand to extend into, so that the hand-held measurement is convenient.
During measurement, the measuring instrument is clamped on any side of a steel rail, the contact surface of the rail web support is attached to the contour surface of the rail web, the contact surface of the rail head measuring frame is attached to the contour surface of the rail head, the hardness meter stops at any position on the guide groove, and the hardness of the corresponding position of the rail head is measured. After the measurement is finished, the measuring instrument can be replaced to the other side of the rail head, and the operation is repeated, so that the hardness of the complete outer contour surface of the rail head can be measured. The hardness of any rail head position of the steel rail can be measured by the sliding of the roller in the length direction of the steel rail.
The contact surface of the railhead measuring frame and the railhead is consistent with the outer contour surface of the railhead, the contact surface of the rail web bracket and the rail web is consistent with the contour surface of the rail web, and the radian of the outer circumferential surface of the roller is consistent with the radian of the middle arc of the rail web, so that an accurate positioning reference is provided for measuring hardness; the guide track of the guide groove is consistent with the outer contour surface of the rail head, so that the distance from the hardness tester to the outer contour surface of the rail head is consistent, the hardness tester can stay at any position of the longitudinal section of the steel rail, the hardness of the steel rail head at different angles can be measured, and the measurement precision and the measurement efficiency are provided; the roller moves in the axial direction of the steel rail, so that the hardness of any position of the rail head in the length direction of the steel rail can be measured.
Claims (7)
1. A portable steel rail hardness measuring instrument is characterized in that: the rail head measurement device comprises a rail waist support (1), a rail head measurement frame (2) and a hardness tester (4) arranged on the rail head measurement frame (2), wherein a guide groove (3) is formed in the rail head measurement frame (2), and the hardness tester (4) is arranged on a sliding block of the guide groove (3); the slide block slides in the guide groove (3) so as to drive the hardness tester (4) to slide along the outer contour surface of the rail head (5).
2. The portable steel rail hardness measuring instrument according to claim 1, wherein: the surface of the rail head measuring frame (2) contacted with the rail head (5) is consistent with the outer contour surface of the rail head, and the guide track of the guide groove (3) is consistent with the outer contour surface of the rail head (5).
3. The portable steel rail hardness measuring instrument according to claim 1, wherein: the hardness meter (4) is arranged on the sliding block of the guide groove (3) through a cushion block.
4. The portable steel rail hardness measuring instrument according to claim 1, wherein: still include and arrange gyro wheel (7) on rail waist support (1) through the axle, the shaft hole has been seted up along gyro wheel axis direction on gyro wheel (7), and the axle includes spring (9) of two minor axis (10) and two minor axis (10) of connection, and the shaft hole of gyro wheel (7) is passed to the axle, and the minor axis (10) bottom of bottom inserts the bottom shaft hole of rail waist support (1), and minor axis (10) at top insert the top shaft hole of rail waist support (1) through spring (9) compression return.
5. The portable steel rail hardness measuring instrument according to claim 1, wherein: the surface of the rail web bracket (1) contacted with the rail web (6) is consistent with the profile surface of the rail web (6).
6. The portable steel rail hardness measuring instrument according to claim 4, wherein: the radian of the outer circumferential surface of the roller (7) is consistent with the radian of the middle arc of the rail web (6).
7. The portable steel rail hardness measuring instrument according to claim 1, wherein: the rail waist support (1) is provided with a waist-shaped hole (8) for a hand to extend into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121676257.0U CN215768075U (en) | 2021-07-22 | 2021-07-22 | Portable steel rail hardness measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121676257.0U CN215768075U (en) | 2021-07-22 | 2021-07-22 | Portable steel rail hardness measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215768075U true CN215768075U (en) | 2022-02-08 |
Family
ID=80106781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121676257.0U Expired - Fee Related CN215768075U (en) | 2021-07-22 | 2021-07-22 | Portable steel rail hardness measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215768075U (en) |
-
2021
- 2021-07-22 CN CN202121676257.0U patent/CN215768075U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |