Rail web grinding amount measuring instrument

Abstract

The utility model discloses a rail web polishing amount measuring instrument which comprises a supporting positioning plate, a clamping assembly, a fixing plate, a digital display probe and a vernier graduated scale, the supporting positioning plate is vertically clamped on a steel rail in a magnetic attraction mode, the clamping assembly is rotatably installed on the upper portion of the supporting positioning plate and is screwed and fixed on a rail head of the steel rail through a T-shaped clamping screw, and the digital display probe is fixed on the vernier graduated scale. The fixing plate is installed on the supporting and positioning plate through two linear sliding rails, the digital display detection head is installed on the fixing plate, and the vernier graduated scale is installed at the side end of the fixing plate and movably clamped at the side end of the supporting and positioning plate. By means of the mode, through single-side measurement and flexible adjustment, the grinding amount of rail webs on the two sides can be accurately measured.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a rail web grinding amount measuring instrument. Background Art

[0002] The steel rail is one of the most basic structures of a railway. The steel rail is integrally formed by a rail bottom, a rail web, and a rail head. The rail web belongs to the part with the smallest size in the cross-section of the steel rail. Due to different degrees of oxide layers and rusting conditions generated during the storage and transportation of the steel rail, during the construction process, according to the regulations of relevant technologies, it is necessary to grind the rail web of the steel rail. After grinding, it is necessary to monitor the thickness change of the rail web to ensure that the grinding amount does not exceed the specified range, thereby ensuring that the strength and other properties of the steel rail are not affected.

[0003] At present, a micrometer or a vernier caliper is mainly used to measure the thickness of the rail web at the end of the steel rail. For the measurement of the thickness of the rail web in the middle of a long steel rail and on the line, there are also some explorations in this regard. The Chinese patent with the patent number CN201621375146.5 discloses a steel rail web thickness measuring ruler. Although it can quickly and accurately measure the thickness of the in-service rail web on the line, the operation is cumbersome, the detection accuracy is poor, and it is difficult to detect the single-sided rail web grinding amount. Due to its measurement method and design structure, the upper surface of the steel rail is severely worn, and the fixed measurement distance is constantly changing. It is troublesome to accurately position the height of the measurement point and it is impossible to more accurately determine the grinding amount.

[0004] Based on the above defects and deficiencies, it is necessary to improve the existing technology and design a rail web grinding amount measuring instrument. Summary of the Utility Model

[0005] The main technical problem solved by the utility model is to provide a rail web grinding amount measuring instrument that can efficiently, accurately and conveniently measure the grinding amount of the rail web of a steel rail.

[0006] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a rail web grinding amount measuring instrument, which includes:

[0007] A support positioning plate, vertically magnetically clamped to the steel rail;

[0008] A clamping assembly, rotatably installed on the upper part of the support positioning plate and tightened and fixed on the rail head of the steel rail by a T-shaped clamping screw;

[0009] A fixing plate, slidably installed on the support positioning plate;

[0010] A digital display probe head, installed on the fixing plate, pointing to the rail web of the steel rail. A switch and an adjustment zeroing button are arranged on the digital display probe head for accurate measurement and reading before and after the rail web is ground;

[0011] A vernier scale is installed on the side end of the fixed plate. A main scale opposite to the vernier scale is engraved on the support positioning plate. The vernier scale and the main scale can accurately read the position.

[0012] Preferably, the clamping assembly includes a U-shaped plate, a hinge support, and a T-shaped clamping screw. One end of the U-shaped plate is movably and rotatably connected to the support positioning plate through the hinge support, and a T-shaped clamping screw capable of being tightened and fixed on the rail head is installed at the other end of the U-shaped plate.

[0013] Preferably, a rail bottom block and a rail head inclined block are installed on one side of the support positioning plate close to the rail web. A clamping groove matched with the rail bottom is arranged on the rail bottom block, and the rail bottom block is clamped on the rail bottom. An inclined surface matched with the rail head is arranged on the rail head inclined block.

[0014] Preferably, the rail bottom block and the rail head inclined block are made of magnetic materials and are magnetically adsorbed to the rail. The rail bottom block and the rail head inclined block serve as measurement and positioning references, assist the clamping assembly to clamp, ensure that the support positioning plate is vertically arranged relative to the rail, thereby ensuring the stability of the overall structure, with simple operation and reliable use.

[0015] Preferably, the fixed plate is installed on the support positioning plate through two linear sliding rails. The position of the digital display probe head is adjustable, and the wear amount at various positions above and below the rail web can be measured by taking points.

[0016] Preferably, the vernier scale is slidably clamped at the side end of the support positioning plate. A fixing screw pointing to the support positioning plate is installed at the side end of the vernier scale. By locking the fixing screw, the position where the fixed plate is located is fixed, which is convenient for the digital display probe head to read the measurement value.

[0017] Preferably, a guiding sliding groove is arranged at the side end of the support positioning plate, and a guiding sliding block matched with it is arranged on the vernier scale.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The vernier scale and the main scale cooperate to accurately read the detection position of the digital display probe head, ensuring the position accuracy;

[0020] A switch and an adjustment and zeroing button are arranged on the digital display probe head for accurate measurement and reading before and after the rail web is ground;

[0021] The clamping assembly, the rail bottom block and the rail head inclined block cooperate to assist in clamping and installing on the rail;

[0022] The grinding amount of the rail web can be measured efficiently, accurately and conveniently;

[0023] Since the cross-section of the rail is not completely centrosymmetric, by unilateral measurement and flexible adjustment, the grinding amounts on both sides of the rail waist can be measured more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a measuring instrument for the grinding amount of the rail waist.

[0025] Figure 2 It is a side view of a measuring instrument for the grinding amount of the rail waist.

[0026] Figure 3 It is a schematic structural diagram of a measuring instrument for the grinding amount of the rail waist from another perspective.

[0027] Among them, 1 is a support positioning plate, 10 is a guiding chute, 2 is a clamping assembly, 21 is a U-shaped plate, 22 is a hinge support, 23 is a T-shaped clamping screw, 3 is a fixing plate, 4 is a digital display probe, 5 is a vernier scale, 51 is a guiding slider, 6 is a rail bottom block for the rail, 60 is a clamping groove, 7 is a rail head inclined block, 8 is a linear slide rail, and 9 is a fixing screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will elaborate on the preferred embodiments of the present invention in detail with reference to the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] Please refer to Figures 1 to 3 , the embodiments of the present invention include:

[0030] A measuring instrument for the grinding amount of the rail waist, which includes a support positioning plate 1, a clamping assembly 2, a fixing plate 3, a digital display probe 4, a vernier scale 5, a rail bottom block 6 for the rail, a rail head inclined block 7, a linear slide rail 8, and a fixing screw 9.

[0031] The support positioning plate 1 is vertically magnetically clamped to the rail. On the side of the support positioning plate 1 close to the rail waist, a rail bottom block 6 for the rail and a rail head inclined block 7 are installed. The rail bottom block 6 for the rail is provided with a clamping groove 60 for mating with the rail bottom. The rail bottom block 6 for the rail is clamped on the rail bottom. The rail head inclined block 7 is provided with an inclined surface for mating with the rail head. The rail bottom block 6 for the rail and the rail head inclined block 7 are made of magnetic materials and are magnetically adsorbed to the rail. The rail bottom block 6 for the rail and the rail head inclined block 7 serve as the measurement and positioning reference, assisting the clamping assembly 2 to clamp, ensuring that the support positioning plate 1 is vertically arranged relative to the rail, thereby ensuring the stability of the overall structure, with simple operation and reliable use.

[0032] The clamping assembly 2 is rotatably installed on the upper part of the support positioning plate 1 and is fixed on the rail head by tightening a T-shaped clamping screw. The clamping assembly 2 includes a U-shaped plate 21, a hinge support 22, and a T-shaped clamping screw 23. One end of the U-shaped plate 21 is movably and rotatably connected to the support positioning plate 1 through the hinge support 22, and the other end of the U-shaped plate 21 is installed with a T-shaped clamping screw 23 that can be tightened and fixed on the rail head.

[0033] The fixed plate 3 is installed on the support positioning plate 1 through two linear slide rails 8, and its vertical position is adjustable, so that the wear amounts at various positions up and down the rail web can be measured by taking points.

[0034] The digital display probe 4 is installed on the fixed plate 3, and the digital display probe 4 points to the rail web. The digital display probe 4 is provided with a switch and an adjustment zeroing button for accurate measurement and reading before and after the rail web is polished.

[0035] The vernier scale 5 is installed at the side end of the fixed plate 3 and is movably clamped at the side end of the support positioning plate 1. The side end of the support positioning plate 1 is provided with a guiding chute 10, and the vernier scale 5 is provided with a guiding slider 51 that cooperates with it. The main scale opposite to the vernier scale 5 is engraved on the support positioning plate 1. The vernier scale 5 and the main scale can accurately read the position. A fixing screw 9 pointing to the support positioning plate 1 is installed at the side end of the vernier scale 5. By tightening the fixing screw 9, the position of the fixed plate 3 is locked, which is convenient for the digital display probe 4 to read the measured value.

[0036] When the rail web grinding amount measuring instrument of the present utility model is working, before the rail web is ground, the measuring instrument is fixed in the manner shown Figure 1 Then, the T-shaped clamping screw 23 is tightened and fixed on the rail head. Then, the digital display probe 4 is moved to find the position where the 0 graduation line of the vernier scale 5 and the main scale coincide, and the value is zeroed. Then, the digital display probe 4 is moved to record the values at various positions at different heights as needed. After the measuring instrument is removed, after the rail web grinding is completed, the measuring instrument is fixed at the original position, and the values at various positions are measured and recorded. The difference between the two is the grinding amount. Finally, it is compared with the specified value to evaluate whether the grinding operation meets the requirements.

[0037] The rail web grinding amount measuring instrument of the present utility model can efficiently, accurately and conveniently measure the rail web grinding amount. Because the cross-section of the rail is not completely centrosymmetric, the grinding amounts of the two sides of the rail web can be measured more accurately through single-side measurement and flexible adjustment.

[0038] The above are only embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A rail waist grinding amount measuring instrument, characterized in that: include: The support positioning plate (1) is vertically magnetically mounted on the rail; The clamping assembly (2) is rotatably mounted on the upper portion of the supporting positioning plate (1) and is fixed to the rail head by tightening with a T-shaped clamping screw; A fixing plate (3) slidably mounted on the supporting positioning plate (1); A digital display detection head (4) is mounted on the fixing plate (3) and points to the rail waist. The digital display detection head (4) is provided with a switch and a zero adjustment button for accurate measurement and reading before and after rail waist grinding. The vernier scale (5) is mounted on the side end of the fixed plate (3), and the supporting positioning plate (1) is engraved with a main scale corresponding to the vernier scale (5). The vernier scale (5) and the main scale can accurately read the position.

2. A rail waist grinding amount measuring instrument according to claim 1, characterized in that: The clamping assembly (2) comprises a U-shaped plate (21), a hinge support (22) and a T-shaped clamping screw (23); one end of the U-shaped plate (21) is movably connected to the supporting positioning plate (1) via the hinge support (22); the other end of the U-shaped plate (21) is provided with a T-shaped clamping screw (23) which can be tightened and fixed on the rail head.

3. A rail waist grinding amount measuring instrument according to claim 1, characterized in that: A rail bottom clamping block (6) and a rail head inclined block (7) are installed on one side of the support positioning plate (1) close to the rail waist; the rail bottom clamping block (6) is provided with a clamping groove (60) that matches the rail bottom; the rail bottom clamping block (6) is clamped on the rail bottom; and the rail head inclined block (7) is provided with an inclined surface that matches the rail head.

4. A rail waist grinding amount measuring instrument according to claim 3, characterized in that: The rail bottom clamping block (6) and the rail head inclined block (7) are made of magnetic material and are magnetically adsorbed onto the rail. The rail bottom clamping block (6) and the rail head inclined block (7) serve as measurement and positioning references.

5. The rail waist grinding amount measuring instrument according to claim 1, characterized in that: The fixing plate (3) is mounted on the supporting positioning plate (1) via two linear slide rails (8).

6. The rail waist grinding amount measuring instrument according to claim 1, characterized in that: The vernier scale (5) is slidably mounted on the side end of the support positioning plate (1), and a fixing screw (9) pointing to the support positioning plate (1) is installed on the side end of the vernier scale (5).

7. A rail waist grinding amount measuring instrument according to claim 6, characterized in that: The side end of the supporting positioning plate (1) is provided with a guide slide groove (10), and the vernier scale (5) is provided with a guide slide block (51) matching with the guide slide groove.

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