Vernier caliper for detecting width of rail head of steel rail

Abstract

The utility model discloses a vernier caliper for detecting the width of a rail head of a steel rail, and the vernier caliper comprises a caliper body which is provided with a first caliper part and a reference clamping jaw which are connected with each other; the first vernier assembly is provided with a movable clamping jaw matched with the reference clamping jaw, and the first vernier assembly is arranged on the first ruler part and can slide in the length direction of the first ruler part so that the movable clamping jaw can be close to or away from the reference clamping jaw; wherein the reference clamping jaw and the movable clamping jaw are both provided with clamping blocks used for abutting against a steel rail to be measured, the two clamping blocks are arranged in a staggered mode in the length direction of the first ruler part, and the top of one clamping block is flush with the bottom of the other clamping block. The vernier caliper for detecting the width of the rail head of the steel rail can directly measure the width of the rail head of the steel rail simply and conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tools, and particularly to a vernier caliper for detecting the width of a rail head. Background Art

[0002] After the rail head widths and the hidden tip slopes of rail parts such as 50 kg / m basic rails, 60 kg / m basic rails, 60R2 basic rails, and 60TY wing rails in turnouts are processed, it is necessary to obtain the rail head width at a certain height position on the hidden tip inclined plane. However, the measuring surfaces in the width direction of the rail have vertical surfaces, inner inclined surfaces, and outer inclined surfaces, and cannot be directly measured by measuring tools. The existing method is to calculate indirectly through the starting point of the hidden tip inclined plane height and the slope size to obtain the rail head width dimension at this height position. This method is an indirect measurement and requires calculations according to different slope sizes, resulting in a complex measurement process and low efficiency. Summary of the Utility Model

[0003] The utility model provides a vernier caliper for detecting the width of a rail head to solve the technical problems of complex measurement process and low efficiency in measuring the width of a rail head.

[0004] According to one aspect of the utility model, there is provided a vernier caliper for detecting the width of a rail head, the vernier caliper comprising:

[0005] A body, having a first scale portion and a reference jaw connected to each other; and

[0006] A first vernier assembly, having a movable jaw matching with the reference jaw, the first vernier assembly being disposed on the first scale portion and capable of sliding along the length direction of the first scale portion to move the movable jaw closer to or away from the reference jaw;

[0007] Wherein, both the reference jaw and the movable jaw have blocks for abutting against the rail to be measured, the two blocks are arranged in a staggered manner in the length direction of the first scale portion, and the top of one of the blocks is flush with the bottom of the other block.

[0008] In some embodiments, the body has a second scale portion, and a preset angle is formed between the second scale portion and the first scale portion; the vernier caliper comprises:

[0009] A second vernier assembly, having a movable height-limiting jaw for abutting against the top of the rail head to be measured, the second vernier assembly being disposed on the second scale portion and capable of sliding along the length direction of the second scale portion to raise or lower the movable height-limiting jaw.

[0010] In some embodiments, the movable height-limiting jaw includes a limiting section extending parallel to the first scale portion.

[0011] In some embodiments, both the first scale portion and the first vernier component have zero scales;

[0012] The scale body has a first limit block, and the movable jaw has a second limit block. The first limit block can abut against the second limit block to align the zero scale of the first scale portion with the zero scale of the first vernier component.

[0013] In some embodiments, the first limit block is located at the connection between the first scale portion and the reference jaw.

[0014] In some embodiments, the vernier caliper includes a level, which is arranged on the first vernier component or the scale body.

[0015] In some embodiments, the bottom of the clamping block of the reference jaw is flush with the top of the clamping block of the movable jaw.

[0016] In some embodiments, a wear-resistant layer is formed on the surface of the clamping block; or, the clamping block is made of wear-resistant material.

[0017] In some embodiments, both the reference jaw and the movable jaw include a jaw body extending perpendicular to the first scale portion, and the clamping block is arranged on the jaw body and protrudes laterally.

[0018] In some embodiments, the first vernier component includes a slider member slidably engaged with the first scale portion and a locking member. The movable jaw is connected to the slider member, and the locking member can lock the slider member or unlock it to enable the slider member to slide relative to the first scale portion.

[0019] The utility model has the following beneficial effects: By abutting the reference jaw against one side of the measured steel rail and moving the movable jaw to abut against the other side of the measured steel rail, since the top of one of the clamping blocks is flush with the bottom of the other clamping block, it enables the two clamping blocks to abut against two flush positions on the measured steel rail even when the measured steel rail has two inclined surfaces with opposite inclination directions or one inclined surface and one vertical surface in the width direction. Furthermore, the width dimension of the measured steel rail can be directly read on the first scale portion and the first vernier component, and the measurement is simple, and the measurement result is relatively more intuitive and convenient to obtain.

[0020] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a vernier caliper for detecting the width of a rail head in a preferred embodiment of the present utility model;

[0023] Figure 2 is a schematic diagram of the measuring state of the vernier caliper for detecting the width of a rail head in a preferred embodiment of the present utility model Figure 1 ;

[0024] Figure 3 is a schematic diagram of the measuring state of the vernier caliper for detecting the width of a rail head in a preferred embodiment of the present utility model Figure 2 ; Legend description:

[0025] 10, body; 11, first scale part; 12, reference jaw; 121, block; 13, second scale part; 14, first limit block;

[0026] 20, first vernier component; 21, movable jaw; 211, second limit block; 22, slider; 23, locking part;

[0027] 30, second vernier component; 31, movable height limit jaw; 311, limit section;

[0028] 40, level gauge. Detailed implementation mode

[0029] The following will describe in detail the embodiments of the present utility model with reference to the accompanying drawings. However, the present utility model can be implemented in many different ways defined and covered by the following.

[0030] As Figures 1 - 3 shown, this embodiment provides a vernier caliper for detecting the width of a rail head. The vernier caliper includes a body 10 and a first vernier component 20.

[0031] The body 10 has a first scale part 11 and a reference jaw 12 that are connected to each other. It can be understood that the first scale part 11 is a bar-shaped scale with length graduations. In some embodiments, the first scale part 11 and the reference jaw 12 are integrally formed.

[0032] The first vernier component 20 has a movable jaw 21 that matches the reference jaw 12. The first vernier component 20 is arranged on the first scale part 11 and can slide along the length direction of the first scale part 11 so that the movable jaw 21 approaches or moves away from the reference jaw 12. That is to say, the movable jaw 21 can slide relative to the first scale part 11, thereby adjusting the distance between the movable jaw 21 and the reference jaw 12.

[0033] Wherein, both the reference jaw 12 and the movable jaw 21 have a clamping block 121 for abutting against the measured steel rail. The two clamping blocks 121 are arranged offset in the length direction of the first scale part 11, and the top of one clamping block 121 is flush with the bottom of the other clamping block 121.

[0034] By abutting the reference jaw 12 against one side of the measured steel rail and moving the movable jaw 21 to abut against the other side of the measured steel rail, since the top of one clamping block 121 is flush with the bottom of the other clamping block 121, it enables the two clamping blocks 121 to abut against two flush positions on the measured steel rail even when the measured steel rail has two inclined surfaces with opposite inclination directions or one inclined surface and one vertical surface in the width direction. Furthermore, the width dimension of the measured steel rail can be obtained by reading on the first scale part 11 and the first vernier component 20.

[0035] In some embodiments, the scale body 10 has a second scale part 13, and a preset angle is formed between the second scale part 13 and the first scale part 11. The vernier caliper includes a second vernier component 30, and the second vernier component 30 has a movable height-limiting jaw 31 for abutting against the top of the head of the measured steel rail. The second vernier component 30 is arranged on the second scale part 13 and can slide along the length direction of the second scale part 13 to raise and lower the movable height-limiting jaw 31.

[0036] It can be understood that the second scale part 13 is a scale bar structure with scales, and the corresponding second vernier component 30 is a vernier component with scales.

[0037] By sliding the second vernier component 30 along the length direction of the second scale part 13, the movable height-limiting jaw 31 can be raised and lowered, so as to adjust the height dimension between the movable height-limiting jaw 31 and the clamping block 121. It should be noted that for measured steel rails of different models, the height between the measured positions on both sides in the width direction and the top is different. By adjusting the movable height-limiting jaw 31, the height value between the top position of the head of the measured steel rail and the measured positions on both sides in the width direction can be adapted.

[0038] In some embodiments, the first scale part 11 is horizontally arranged, the second scale part 13 is vertically arranged, one end of the two is connected, and the reference jaw 12 is located on the side of the first scale part 11 away from the second scale part 13.

[0039] In some embodiments, the bottom of the clamping block 121 of the reference jaw 12 is flush with the top of the clamping block 121 of the movable jaw 21.

[0040] In some embodiments, the movable height-limiting claw 31 includes a limiting section 311 extending parallel to the first ruler part 11. It can be understood that the limiting section 311 is used to abut against the top of the head of the measured steel rail. By making the limiting section 311 extend parallel to the first ruler part 11, when the position where the top of the head of the measured steel rail contacts the movable height-limiting claw 31 changes, its limiting height can remain stable and unchanged with the first ruler part 11.

[0041] In some embodiments, the second vernier component 30 includes a slider member 22 and a locking member 23. The slider member 22 can slide along the second ruler part 13, and the movable height-limiting claw 31 is connected to the slider member 22 to slide therewith. The locking member 23 can fasten the slider member 22 and the movable height-limiting claw 31 to the second ruler part 13 to limit the sliding, or release the fastening to enable the slider member 22 and the movable height-limiting claw 31 to slide relative to the second ruler part 13. Before measurement, the slider member 22 and the movable height-limiting claw 31 can be adjusted to a preset position according to the limiting height of the measured steel rail, and then locked.

[0042] Both the first ruler part 11 and the first vernier component 20 have zero scales. It should be noted that in a vernier caliper of the prior art, the two clamping blocks 121 are aligned, so by abutting the two clamping blocks 121, the zero scale of the first ruler part 11 can be aligned with the zero scale of the first vernier component 20. In the embodiments of the present application, the two clamping blocks 121 are arranged in a dislocation manner in the length direction of the first ruler part 11, which makes it impossible for them to abut and align the zero scales.

[0043] For this, the ruler body 10 has a first limiting block 14, and the movable clamping claw 21 has a second limiting block 211. The first limiting block 14 can abut against the second limiting block 211 to align the zero scale of the first ruler part 11 with the zero scale of the first vernier component 20. It can be understood that when the first limiting block 14 and the second limiting block 211 are in the abutting position, the dimension between the two clamping blocks 121 in the length direction of the first ruler part 11 is zero.

[0044] In some embodiments, the first limiting block 14 is located at the connection of the first ruler part 11 and the reference clamping claw 12, thereby improving the connection reliability between the first ruler part 11 and the reference clamping claw 12.

[0045] In some embodiments, the vernier caliper includes a spirit level 40, which is arranged on the first vernier component 20, the second vernier component 30 or the ruler body 10. It can be understood that when measuring the width of the steel rail, it is necessary to ensure that the positions where the two clamping blocks 121 of the vernier caliper contact the measured steel rail are horizontal. By arranging the spirit level 40, it can assist in judging whether the current measurement is horizontal, thereby improving the reliability of the detection result. In some embodiments, the spirit level is arranged on the first vernier component 20.

[0046] In some embodiments, both of the two clamping blocks 121 have an angle for contacting the rail to be measured, and the angle is a right angle. In some embodiments, the two clamping blocks 121 are rectangular blocks.

[0047] In some embodiments, a wear-resistant layer is formed on the surface of the clamping block 121. It can be understood that the wear resistance of the wear-resistant layer is higher than that of the first scale body 10 or the second scale body 10. Thereby reducing the wear amount during use and improving the detection accuracy. In some other embodiments, the clamping block 121 is made of wear-resistant material.

[0048] In some embodiments, both the reference jaw 12 and the movable jaw 21 include a jaw body extending perpendicular to the first scale portion 11, and the clamping block 121 is arranged on the jaw body and protrudes laterally. It can be understood that the laterally protruding clamping block 121 can avoid interference between the jaw body and the rail to be measured when contacting the inclined surface of the rail to be measured.

[0049] In some embodiments, the first vernier assembly 20 includes a slider member 22 slidably engaged with the first scale portion 11 and a locking member 23. The movable jaw 21 is connected to the slider member 22, and the locking member 23 can lock the slider member 22 or unlock it to enable the slider member 22 to slide relative to the first scale portion 11.

[0050] It should be noted that the vernier caliper in the above embodiments can be applied to the measurement of 50 kg / m basic rails, 60 kg / m basic rails, 60R2 basic rails, and 60TY wing rails. For different rails, it is necessary to adjust to different limit heights. For example, for the measurement of 60 kg / m basic rails, align the zero scale of the second vernier assembly 30 with the 16 mm scale of the second scale portion 13, and then make the movable height-limiting jaw 31 abut against the top of the rail head for measurement. For the measurement of 60R2 basic rails, it is necessary to align the zero scale of the second vernier assembly 30 with the 14 mm scale of the second scale portion 13.

[0051] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vernier caliper for detecting the width of a rail head, characterized in that: The vernier caliper comprises: A ruler body (10) having a first ruler portion (11) and a reference clamping claw (12) connected to each other; and a first cursor assembly (20), having a movable claw (21) matched with the reference claw (12), the first cursor assembly (20) being arranged on the first ruler portion (11) and being capable of sliding along the length direction of the first ruler portion (11) so that the movable claw (21) is close to or away from the reference claw (12); The reference clamping jaw (12) and the movable clamping jaw (21) both have a clamping block (121) for abutting against the measured rail, the two clamping blocks (121) are staggered in the length direction of the first scale portion (11), and the top of one of the clamping blocks (121) is flush with the bottom of the other clamping block (121).

2. The vernier caliper for detecting the width of the rail head according to claim 1, characterized in that: The ruler body (10) has a second ruler portion (13), the length direction of which is arranged in the up-down direction, and the second ruler portion forms a preset angle with the first ruler portion; The vernier caliper comprises: The second cursor assembly (30) has a movable height-limiting claw (31) for abutting against the top of the rail head of the measured rail. The second cursor assembly (30) is arranged on the second scale portion (13) and can slide along the length direction of the second scale portion (13) to make the movable height-limiting claw (31) rise and fall.

3. The vernier caliper for detecting the rail head width according to claim 2, characterized in that: The movable height-limiting claw (31) comprises a limiting section (311) extending parallel to the first ruler portion (11).

4. The vernier caliper for detecting the width of the rail head according to claim 1, characterized in that: The first ruler portion (11) and the first vernier assembly (20) both have a zero scale; The ruler body (10) has a first limit block (14), and the movable claw (21) has a second limit block (211). The first limit block (14) can abut against the second limit block (211) so that the zero scale of the first ruler part (11) is aligned with the zero scale of the first cursor assembly (20).

5. The vernier caliper for detecting the rail head width according to claim 4, characterized in that: The first limit block (14) is located at the connection between the first scale portion (11) and the reference claw (12).

6. The vernier caliper for detecting the width of the rail head according to claim 1, characterized in that: The vernier caliper comprises a level (40) which is arranged on the first vernier component (20) or the ruler body (10).

7. The vernier caliper for detecting the rail head width according to claim 1, characterized in that: The bottom of the clamping block (121) of the reference clamping jaw (12) is flush with the top of the clamping block (121) of the movable clamping jaw (21).

8. The vernier caliper for detecting the width of the rail head according to claim 1, characterized in that: A wear-resistant layer is formed on the surface of the clamping block (121); or the clamping block (121) is made of a wear-resistant material.

9. The vernier caliper for detecting the rail head width according to claim 1, characterized in that: The reference clamping jaw (12) and the movable clamping jaw (21) both comprise a clamping jaw body extending perpendicularly to the first ruler portion (11), and the clamping block (121) is arranged on the clamping jaw body and protrudes laterally.

10. The vernier caliper for detecting the rail head width according to claim 1, characterized in that: The first cursor assembly (20) comprises a slider (22) slidably matched with the first ruler (11), and a locking member (23); the movable claw (21) is connected to the slider (22); the locking member (23) can lock the slider (22) or unlock it so that the slider (22) can slide relative to the first ruler (11).

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