CN218443641U - Rail head abrasion instrument capable of simultaneously measuring vertical abrasion and side abrasion - Google Patents
Rail head abrasion instrument capable of simultaneously measuring vertical abrasion and side abrasion Download PDFInfo
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- CN218443641U CN218443641U CN202222305436.4U CN202222305436U CN218443641U CN 218443641 U CN218443641 U CN 218443641U CN 202222305436 U CN202222305436 U CN 202222305436U CN 218443641 U CN218443641 U CN 218443641U
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Abstract
The utility model discloses a rail head wear gauge capable of measuring vertical wear and side wear simultaneously, which comprises a base, a ruler body, a vertical wear measuring part and a side wear measuring part; the upper surface of the base is transversely arranged, and the upper side of the base is provided with a base vertical edge which is vertical to the upper surface of the base; the ruler body is perpendicular to the upper surface of the base and arranged on the base, and a ruler body rail type selection line is carved on the ruler body; the side surface abrasion measuring part comprises a Z-shaped ruler frame, a horizontal measuring rod, a horizontal digital display device and a Z-shaped ruler frame vernier, and the vertical abrasion measuring part comprises an L-shaped ruler frame, a vertical measuring rod, a vertical digital display device and an L-shaped ruler frame vernier. When the abrasion instrument is used for detecting the rail head, each work section only needs one rail head abrasion instrument to carry out quick and accurate measurement of vertical abrasion and side abrasion on rails of all models, and the abrasion instrument is simple in structure, economical, practical, flexible to adjust and suitable for the requirements of rail traffic departments on quick and accurate measurement of various rail type abrasion.
Description
Technical Field
The utility model relates to a technique is measured to rail among the rail transportation, relates to the measurement of the perpendicular wearing and tearing of rail railhead and side wearing and tearing, but especially a rail railhead wearing and tearing appearance of simultaneous measurement perpendicular wearing and tearing and side wearing and tearing.
Background
In the process of processing and detecting rails used for rail transportation, rail head verticality and side abrasion measurement of rails with different sizes and shapes are often required.
In the rail abrasion instrument in the prior art, a rail abrasion instrument uses the corner angles of the lower bevel edge and the side vertical edge of a rail head of a non-working surface of the rail head, uses the corner bayonet for positioning to determine the position of a measured point of vertical abrasion and side abrasion of the rail head, then determines the position of a measuring head on the abrasion instrument through a profiling bayonet on the rail abrasion instrument to ensure that the position of the measuring head of the abrasion instrument coincides with the measured point of vertical abrasion and side abrasion of the rail head, and finally measures the vertical abrasion and side abrasion values of the rail head through a vernier scale or a digital display scale. In the actual construction of railways, because the main purposes of use of each section of railways are different, the types of rails are also different, and the angles of the arc bending parts at the lower parts of the railheads of the rails of different types are also different, in the process of detecting the vertical abrasion and the side abrasion of the railheads of the rails of different types, rail abrasion instruments of different types are required to be equipped to realize accurate positioning so as to achieve the purpose of accurate measurement.
The rail wear gauges of different types must be equipped for measuring the rails of different rail types in each work section of the railway transportation department, so that the rail transportation department is not favorable for reducing the cost and managing tools, and the rail wear gauges cannot meet the rapid measurement requirements of different rails in the rapid development of modern rail transportation.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a rail head abrasion instrument capable of measuring vertical abrasion and side abrasion simultaneously aiming at the defects of the prior art, which can quickly and accurately detect the vertical abrasion and the side abrasion of rail heads with different specifications and models and realize the purpose that one abrasion instrument can simultaneously, accurately and conveniently measure the vertical abrasion and the side abrasion of the rail heads with different rail types.
The technical scheme for realizing the purpose of the invention is as follows:
a rail head wear gauge capable of measuring vertical wear and side wear simultaneously comprises a base, a ruler body, a vertical wear measuring part and a side wear measuring part;
the upper surface of the base is transversely arranged, and the upper side of the base is provided with a base vertical edge which is vertical to the upper surface of the base; the ruler body is perpendicular to the upper surface of the base and arranged on the base, and a ruler body rail type selection line is carved on the ruler body;
the side wear measuring part includes
The Z-shaped ruler frame is slidably mounted on the ruler body and can slide up and down; the top of the Z-shaped ruler frame extends to form a ruler frame claw, and a ruler frame claw rail type selection line is carved on the ruler frame claw; the lower part of the Z-shaped ruler frame extends to form a horizontal ruler frame;
the horizontal measuring rod is slidably mounted on the leveling ruler frame and can slide left and right, and a horizontal measuring rod measuring head is arranged at the top of the left end of the horizontal measuring rod;
the horizontal digital display device is arranged on the leveling ruler frame;
the Z-shaped ruler frame vernier is arranged on the Z-shaped ruler frame; the Z-shaped ruler frame vernier positioning line is marked on the Z-shaped ruler frame vernier; the vernier positioning line of the Z-shaped ruler frame corresponds to the ruler rail type selection line;
the vertical wear measuring section includes
The L-shaped ruler frame is slidably mounted on the ruler frame claw and can slide left and right; the L-shaped ruler frame extends to form a vertical ruler frame;
the vertical measuring rod is slidably mounted on the vertical ruler frame and can slide up and down, and a vertical measuring rod measuring head is arranged at the top of the lower end of the vertical measuring rod;
the vertical digital display device is arranged on the vertical ruler frame;
the L-shaped ruler frame vernier is marked with an L-shaped ruler frame vernier positioning line; the L-shaped ruler frame vernier is arranged on the L-shaped ruler frame; the L-shaped ruler frame vernier positioning line corresponds to the ruler frame claw rail type selection line.
The Z-shaped ruler frame locking screw is arranged on the Z-shaped ruler frame; and an L-shaped ruler frame locking screw is arranged on the L-shaped ruler frame.
Rule body rail type selection line setting principle: taking the P43 standard rail as an example, when the positioning line of the vernier of the Z-shaped frame is aligned with the P43 rail type selection line on the ruler body, the vertical distance from the horizontal measuring bar measuring head to the upper surface of the base of the abrasion tester is equal to the vertical distance from the measured point of the side abrasion of the P43 standard rail to the bottom surface of the base of the P43 standard rail, that is, the horizontal measuring bar measuring head and the measured point of the side abrasion of the P43 standard rail are on the same horizontal plane. And other rail type selection lines are arranged in the same way.
Rule frame claw rail type selection line setting principle: taking the P43 standard rail as an example, when the L-shaped frame vernier positioning line is aligned with the P43 rail type selection line on the frame claw, the horizontal distance from the vertical measuring rod measuring head to the vertical edge on the base of the wear gauge is equal to the horizontal distance from the measured point of the P43 standard rail vertical wear to the vertical edge on the side of the base of the P43 standard rail, that is, the vertical measuring head and the measured point of the P43 standard rail vertical wear are on the same vertical plane. And the other rail type selection lines are arranged in the same way.
The measuring method for measuring the vertical abrasion and the side abrasion of the rail head by the rail head abrasion tester comprises a standard rail with the same model as that of a measured rail, and comprises the following steps:
s1, adjusting the position of a Z-shaped ruler frame according to the rail type of a measured rail to align a vernier positioning line of the Z-shaped ruler frame on the Z-shaped ruler frame with a rail type line corresponding to the rail type of the measured rail in a rail type selection line of a ruler body;
s2, locking a Z-shaped ruler frame locking screw;
s3, adjusting the position of the L-shaped ruler frame according to the rail type of the measured rail to align the cursor positioning line of the L-shaped ruler frame with the rail molded line corresponding to the rail type of the measured rail in the claw rail type selection line of the ruler frame;
s4, locking the L-shaped ruler frame locking screw;
s5, moving the vertical measuring rod upwards and moving the horizontal measuring rod rightwards to open the rail head of the standard rail, clamping the abrasion instrument base on the rail base below the standard rail, and enabling the upper surface of the abrasion instrument base and the vertical edge of the base to be tightly attached to the bottom surface of the base of the standard rail and the vertical edge of the rail base respectively;
s6, moving the vertical measuring rod downwards to enable a measuring head of the vertical measuring rod to be in contact with the top of the standard rail, and pressing a zero clearing key on the vertical digital display device to enable the number displayed on a display screen of the vertical digital display device to be zero;
s7, moving the horizontal measuring rod leftwards to enable a measuring head of the horizontal measuring rod to be in contact with the side face of the standard rail, and pressing a zero clearing key on the horizontal digital display device to enable the number displayed on a display screen of the horizontal digital display device to be zero;
s8, taking down the rail head abrasion instrument from the standard rail;
s9, moving the vertical measuring rod upwards and moving the horizontal measuring rod rightwards to make the rail head of the measured rail clear, clamping the abrasion instrument base on the rail base below the working edge of the measured rail, and enabling the upper surface of the abrasion instrument base and the vertical edge of the base to be tightly attached to the bottom surface of the base of the measured rail and the vertical edge of the rail base;
s10, moving the vertical measuring rod downwards to enable a measuring head of the vertical measuring rod to be in contact with the top of the measured rail, wherein the number displayed on a display screen of the vertical digital display device is the vertical abrasion value of the measured rail;
s11, moving the horizontal measuring rod leftwards to enable the measuring head of the horizontal measuring rod to be in contact with the side face of the measured rail, wherein the number displayed on the display screen of the horizontal digital display device is the side face abrasion value of the measured rail.
The utility model discloses do not adopt current rail wearing and tearing appearance to use railhead lower part circular arc department of bending as the location benchmark of perpendicular wearing and tearing and side wearing and tearing measured point, or regard as the location benchmark of perpendicular wearing and tearing and side wearing and tearing measured point with the intersection of hypotenuse and its vertical edge on the rail base, and adopt under the rail base bottom surface and this kind of innovative locate mode of base side vertical edge junction to realize the purpose that a wearing and tearing appearance can accurate and convenient multiple rail type railhead vertical wear and side wearing and tearing simultaneously:
1. as shown in fig. 3 and 4, the intersection point ase:Sub>A of the lower bottom edge of the rail base and the vertical edge of the rail base side is used as ase:Sub>A positioning reference point, the position of the Z-shaped ruler frame on the ruler body is determined by the nominal vertical distance ND1 from the positioning reference point ase:Sub>A to the corresponding measured point B of the rail-shaped side abrasion, when the positioning line of the vernier of the Z-shaped ruler frame is aligned with ase:Sub>A certain rail-shaped selection line, the measuring surface of the measuring head of the horizontal measuring rod can be always positioned on the same horizontal plane with the measured point of the side abrasion of the selected rail, namely the vertical distance B1-A1 from the measuring surface B1 of the horizontal measuring head to the intersection point A1 of the base inclined edge and the vertical edge of the base is equal to the nominal vertical distance B-ase:Sub>A from the measured point B of the rail head side abrasion of the type standard rail to the intersection point ase:Sub>A of the lower bottom edge and the vertical edge of the base side of the type standard rail, namely D1 is equal to ND1;
2. as shown in FIG. 3 and FIG. 4, the intersection A of the lower bottom edge of the rail base and the vertical edge of the rail base side is used as se:Sub>A positioning reference point, the position of the L-shaped measuring tape frame on the tape frame claw is determined by the nominal horizontal distance ND2 from the positioning reference point A to the corresponding rail type vertical abrasion measured point C, when the L-shaped measuring tape frame vernier positioning line is aligned with se:Sub>A certain rail type selection line on the tape frame claw, the measuring surface of the vertical measuring rod measuring head is always on the same vertical plane with the vertical abrasion measured point of the selected rail, namely the horizontal distance C1-A1 from the vertical measuring rod measuring head C1 to the intersection A1 of the upper horizontal edge of the base and the vertical edge of the base is equal to the horizontal distance C-A from the type standard rail vertical abrasion measured point C to the intersection A of the lower bottom edge of the type standard rail base and the vertical edge of the base, namely D2 is equal to ND2.
When the abrasion instrument is used for detecting the rail head, each work section only needs one rail head abrasion instrument to carry out quick and accurate measurement of vertical abrasion and side abrasion on rails of all models, and the abrasion instrument is simple in structure, economical, practical, flexible to adjust and suitable for the requirements of rail traffic departments on quick and accurate measurement of various rail type abrasion.
Drawings
FIG. 1 is a front view of a schematic of a rail head wear gauge in an embodiment of the present invention;
FIG. 2 is a schematic rear elevation view of a rail head wear gauge in accordance with an embodiment of the present invention;
FIG. 3 is a schematic illustration of nominal dimensions of P43 standard rails ND1 and ND 2;
FIG. 4 is a schematic diagram of the dimension D1 marking when the rail-type positioning line of the Z-shaped frame vernier of the present invention is aligned with the P43 rail-type selection line on the ruler body; and when the L-shaped ruler frame vernier positioning line is aligned with the P43 rail type selection line on the ruler body claw, the schematic diagram of D2 size marking is shown;
fig. 5 is a schematic diagram of a rail head wear gauge measuring the vertical wear and lateral wear of a P43 rail head in accordance with an embodiment of the present invention.
In the figure, 1, a base 1-1, a base upper surface 1-2, a base vertical edge 2, a ruler body 2-1, a ruler body rail type selection line 3.Z type ruler frame 3-1, a ruler frame claw 3-2, a ruler frame claw rail type selection line 3-3, a horizontal ruler frame 4, a horizontal digital display device 5, a horizontal measuring rod 5-1, a horizontal measuring rod measuring head 6.Z type ruler frame vernier 6-1.Z type ruler frame vernier positioning line 7.L type ruler frame 7-1, a vertical ruler frame 8, a vertical digital display device 9, a vertical measuring rod 9-1, a vertical measuring rod measuring head 10.L type ruler frame vernier 10-1.L type ruler frame positioning line 11.Z type ruler frame locking screw 12.L type ruler frame locking screw 13, a standard rail;
A. the standard rail head vertical abrasion measuring point A1, the intersection point B of the upper horizontal edge of the base and the vertical edge of the base, the measuring surface C1 of the horizontal measuring rod, the horizontal distance D2.C1-A1 of the measuring surface D1.B1-A1 of the vertical measuring rod, the nominal vertical distance ND2 of the standard rail B-A, and the nominal horizontal distance of the standard rail C-A.
Detailed Description
The present invention will be further described with reference to the following examples and drawings, it being understood that the examples described are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1 and fig. 2, a rail head wear gauge capable of measuring vertical wear and lateral wear simultaneously comprises a base 1, a blade 2, a vertical wear measuring part and a lateral wear measuring part;
the upper surface 1-1 of the base is transversely arranged, and the upper side of the base is provided with a base vertical edge 1-2 vertical to the upper surface 1-1 of the base; the ruler body 2 is perpendicular to the upper surface 1-1 of the base and is arranged on the base, and a ruler body rail type selection line 2-1 is carved on the ruler body 2;
the side wear measuring part includes
The Z-shaped ruler frame 3 is installed on the ruler body 2 in a sliding mode and can slide up and down; the top of the Z-shaped ruler frame 3 extends to form a ruler frame claw 3-1, and a ruler frame claw rail type selection line 3-2 is carved on the ruler frame claw 3-1; the lower part of the Z-shaped ruler frame 3 extends to form a horizontal ruler frame 3-3;
the horizontal measuring rod 5 is installed on the leveling rod frame 3-3 in a sliding mode and can slide left and right, and a horizontal measuring rod measuring head 5-1 is arranged at the top of the left end of the horizontal measuring rod 5;
the horizontal digital display device 4 is arranged on the horizontal ruler frame 3-3;
the Z-shaped ruler frame vernier 6 is arranged on the Z-shaped ruler frame 3; a Z-shaped ruler frame vernier positioning line 6-1 is carved on the Z-shaped ruler frame vernier 6; the vernier positioning line 6-1 of the Z-shaped ruler frame corresponds to the rail type selection line 2-1 of the ruler body;
the vertical wear measuring section includes
The L-shaped ruler frame 7 is slidably mounted on the ruler frame claw 3-1 and can slide left and right; the L-shaped ruler frame 7 extends to form a vertical ruler frame 7-1;
the vertical measuring rod 9 is installed on the vertical ruler frame 7-1 in a sliding mode and can slide up and down, and a vertical measuring rod measuring head 9-1 is arranged at the top of the lower end of the vertical measuring rod 9;
the vertical digital display device 8, the vertical digital display device 8 is arranged on the vertical ruler frame 7-1;
the L-shaped ruler frame vernier 10 is characterized in that an L-shaped ruler frame vernier positioning line 10-1 is carved on the L-shaped ruler frame vernier 10; the L-shaped ruler frame vernier 10 is arranged on the L-shaped ruler frame 7; the L-shaped ruler frame vernier positioning line 10-1 corresponds to the ruler frame claw rail type selection line 3-2.
The Z-shaped ruler frame locking device comprises a locking screw, and a Z-shaped ruler frame locking screw 11 is arranged on the Z-shaped ruler frame 3; the L-shaped ruler frame 7 is provided with an L-shaped ruler frame locking screw 12.
Taking ase:Sub>A P43 standard rail 13 as an example as shown in FIG. 3 and FIG. 4, taking the intersection A of the lower bottom edge of the rail base and the vertical edge of the rail base side as ase:Sub>A positioning reference point, determining the position of the Z-shaped frame on the body by the nominal vertical distance ND1 from the positioning reference point A to the corresponding measured point B of the rail profile side wear, when the positioning line of the vernier of the Z-shaped frame is aligned with ase:Sub>A rail profile selection line, the measuring surface of the horizontal measuring rod measuring head 5-1 can always be on the same horizontal plane with the measured point of the selected rail profile side wear, i.e. the vertical distance B1-A1 from the measuring surface B1 of the horizontal measuring rod measuring head 5-1 to the intersection A of the base bevel edge and the base vertical edge is equal to the nominal vertical distance B-A from the measured point B of the rail profile side wear to the intersection A of the lower bottom edge of the rail base side wear, i.e. D1 is equal to ND1;
as shown in FIG. 3 and FIG. 4, the junction A of the lower bottom edge of the rail base and the vertical edge of the rail base side is used as a positioning reference point, and the position of the L-shaped ruler frame on the ruler frame claw is determined by the nominal horizontal distance ND2 from the positioning reference point A to the corresponding rail type vertical abrasion measured point C. When the L-shaped ruler frame vernier positioning line is aligned with se:Sub>A certain rail type selection line on the ruler frame claw, the measuring surface of the vertical measuring rod measuring head 9-1 can be always positioned on the same vertical plane with the vertical abrasion measured point of the selected rail, namely the horizontal distance C1-A1 from the measuring surface C1 of the vertical measuring rod measuring head 9-1 to the intersection point A1 of the upper horizontal edge of the base and the vertical edge of the base is equal to the horizontal distance C-A from the vertical abrasion measured point C of the standard rail to the intersection point A of the lower bottom edge of the standard rail base and the vertical edge of the base, namely D2 is equal to ND2.
As shown in fig. 5, the method for measuring the vertical wear and the lateral wear of the P43-type rail head by using the rail head wear gauge includes a standard rail of the same type as the measured rail, and the method includes the following steps:
1) According to the rail type of the measured rail, the position of the Z-shaped ruler frame 3 is adjusted, so that a Z-shaped ruler frame vernier positioning line 6-1 on the Z-shaped ruler frame 3 is aligned with a P43 rail type line in a ruler body rail type selection line 2-1;
2) Locking the Z-shaped ruler frame locking screw 11;
3) Adjusting the position of the L-shaped ruler frame 7 to align the vernier positioning line 10-1 of the L-shaped ruler frame with the P43 rail molded line in the claw rail type selection line 3-2 of the ruler frame;
4) Locking the L-shaped ruler frame locking screw 12;
5) Moving the vertical measuring rod 9 upwards and moving the horizontal measuring rod 5 rightwards to open the P43 type standard rail head, clamping the abrasion instrument base 1 on the rail base below the P43 type standard rail, and enabling the upper surface 1-1 and the vertical edge 1-2 of the abrasion instrument base to be tightly attached to the bottom surface of the base of the P43 type standard rail and the vertical edge of the rail base;
6) Moving the vertical measuring rod 9 downwards to enable a measuring head 9-1 of the vertical measuring rod to be in contact with the top of the P43 type standard rail, and pressing a zero clearing key on the vertical digital display device 8 to enable the number displayed on a display screen of the vertical digital display device 8 to be zero;
7) Moving the horizontal measuring rod 5 leftwards to enable a measuring head 5-1 of the horizontal measuring rod to be in contact with the side face of the P43 type standard rail, and pressing a zero clearing key on the horizontal digital display device 4 to enable the number displayed on a display screen of the horizontal digital display device 4 to be zero;
8) Taking down the rail head abrasion instrument from the P43 type standard rail;
9) Moving the vertical measuring rod 9 upwards and moving the horizontal measuring rod 5 rightwards to clear the rail head of the measured rail, clamping the abrasion instrument base 1 on the rail base below the working edge of the measured rail, and tightly attaching the upper surface 1-1 of the abrasion instrument base and the vertical edge 1-2 of the base to the bottom surface of the base of the measured rail and the vertical edge of the rail base;
10 Moving the vertical measuring rod 9 downwards to enable a measuring head 9-1 of the vertical measuring rod to be in contact with the top of the measured rail, wherein the number displayed on a display screen of the vertical digital display device 8 is the vertical abrasion value of the measured rail;
11 Moving the horizontal measuring rod 5 leftwards to enable a measuring head 5-1 of the horizontal measuring rod to be in contact with the side surface of the measured rail, wherein the number displayed on a display screen of the horizontal digital display device 4 is the side surface abrasion value of the measured rail.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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)
1. A rail head abrasion instrument capable of measuring vertical abrasion and side abrasion simultaneously is characterized by comprising a base (1), a ruler body (2), a vertical abrasion measuring part and a side abrasion measuring part;
the upper surface (1-1) of the base is transversely arranged, and the upper side of the base is provided with a base vertical edge (1-2) vertical to the upper surface (1-1) of the base; the ruler body (2) is perpendicular to the upper surface (1-1) of the base and is arranged on the base, and a ruler body rail type selection line (2-1) is carved on the ruler body (2);
the side wear measuring part includes
The Z-shaped ruler frame (3) is slidably mounted on the ruler body (2) and can slide up and down; the top of the Z-shaped ruler frame (3) extends to form a ruler frame claw (3-1), and a ruler frame claw rail type selection line (3-2) is carved on the ruler frame claw (3-1); the lower part of the Z-shaped ruler frame (3) extends to form a horizontal ruler frame (3-3);
the horizontal measuring rod (5) is slidably mounted on the horizontal ruler frame (3-3) and can slide left and right, and a horizontal measuring rod measuring head (5-1) is arranged at the top of the left end of the horizontal measuring rod (5);
the horizontal digital display device (4), the horizontal digital display device (4) is arranged on the leveling rod frame (3-3);
the Z-shaped ruler frame vernier (6) is arranged on the Z-shaped ruler frame (3); a Z-shaped ruler frame vernier positioning line (6-1) is carved on the Z-shaped ruler frame vernier (6); the Z-shaped ruler frame vernier positioning line (6-1) corresponds to the ruler body rail type selection line (2-1);
the vertical wear measuring section includes
The L-shaped ruler frame (7) is slidably mounted on the ruler frame claw (3-1) and can slide left and right; the L-shaped ruler frame (7) extends to form a vertical ruler frame (7-1);
the vertical measuring rod (9) is slidably mounted on the vertical ruler frame (7-1) and can slide up and down, and a vertical measuring rod measuring head (9-1) is arranged at the top of the lower end of the vertical measuring rod (9);
the vertical digital display device (8), the vertical digital display device (8) is arranged on the vertical ruler frame (7-1);
the L-shaped ruler frame vernier (10), wherein an L-shaped ruler frame vernier positioning line (10-1) is carved on the L-shaped ruler frame vernier (10); the L-shaped ruler frame vernier (10) is arranged on the L-shaped ruler frame (7); the L-shaped ruler frame vernier positioning line (10-1) corresponds to the ruler frame claw rail type selection line (3-2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222305436.4U CN218443641U (en) | 2022-08-31 | 2022-08-31 | Rail head abrasion instrument capable of simultaneously measuring vertical abrasion and side abrasion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222305436.4U CN218443641U (en) | 2022-08-31 | 2022-08-31 | Rail head abrasion instrument capable of simultaneously measuring vertical abrasion and side abrasion |
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| CN218443641U true CN218443641U (en) | 2023-02-03 |
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| CN202222305436.4U Active CN218443641U (en) | 2022-08-31 | 2022-08-31 | Rail head abrasion instrument capable of simultaneously measuring vertical abrasion and side abrasion |
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