Measuring tool

Abstract

The utility model provides a measuring tool, which relates to the technical field of railway detection equipment, and comprises a measuring base and a main ruler, the main ruler is in sliding connection with the measuring base, the main ruler is provided with a first scale area, the measuring base is provided with a second scale area, and the first scale area and the second scale area are correspondingly arranged; the measuring tool provided by the utility model can meet the measuring requirements of various rail traffic systems, and can provide accurate and reliable measuring results no matter whether the width of a guard rail rim groove is measured or the steel rail is staggered, so that the applicability and the flexibility of the measuring tool are enhanced, and the working efficiency is improved. Measurement personnel can more flexibly cope with different measurement tasks, and the requirements of a rail transit system for high-precision and high-efficiency measurement are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway detection equipment technical field, concretely relates to a measuring tool. BACKGROUND

[0002] In the rail transit system, the turnout is the key equipment for the conversion of the train running path, and its performance and safety are directly related to the operation efficiency of the whole system and the safety of passengers. The guard rail of the turnout is an important organization part of the frog, which is generally arranged on both sides of the frog and is used to control the running direction of the wheel to prevent the wheel from impacting or climbing the tip of the frog rail, thereby ensuring the safety of train operation. The guard rail is composed of a straight section, two buffer sections and two open ends. The distance between the working edge of the guard rail and the working edge of the frog rail is called the clearance, which is not less than 1391mm according to the Railway Technical Management Regulations, so as to ensure that the wheel flange does not impact or climb the frog rail; the distance between the working edge of the guard rail and the working edge of the wing rail is called the guard distance, which is not greater than 1348mm according to the Railway Technical Management Regulations, so as to ensure that the wheel passes through when the minimum wheel back distance. According to the actual conditions of the railway in China, the wheel flange groove width of the guard rail straight section should be in the range of 42-44mm, and the top surface of the guard rail is 12mm higher than the top surface of the basic rail. The guard rail wheel flange groove size is a key control size for the maintenance of the turnout. In the field of rail transit, the measurement of the guard rail wheel flange groove width and the inspection of the rail misalignment are important links to ensure the safe and stable operation of the track. However, the measuring tools used in the measurement of the guard rail wheel flange groove width and the inspection of the rail misalignment are all steel rulers.

[0003] However, when measuring the width of the guard rail wheel flange groove, it is difficult to accurately fit the steel ruler to the working edge of the steel rail due to the arc-shaped profile of the rail head section, resulting in a large error in the measurement data. In the inspection of the rail misalignment, the misalignment may involve the up-down misalignment of the rail surface or the left-right misalignment of the rail alignment, and the use of a single steel ruler often cannot accurately capture such complex geometric changes. At this time, two steel rulers are needed for measurement, which not only increases the complexity of the operation, but also easily introduces human error, making it difficult to accurately measure the misalignment data and resulting in a large error in the measured data. The steel ruler method used in the current measurement of the guard rail wheel flange groove width and the inspection of the rail misalignment has significant defects and cannot meet the demand of the rail transit system for high-precision and high-efficiency measurement. SUMMARY

[0004] Therefore, in order to solve the problem of the significant defects of the steel ruler method used in the current measurement of the guard rail wheel flange groove width and the inspection of the rail misalignment, which cannot meet the demand of the rail transit system for high-precision and high-efficiency measurement, one object of the present application is to provide a measuring tool, and the specific technical solutions are as follows:

[0005] A measuring tool includes a measuring base and a main scale, wherein the main scale is slidably connected to the measuring base, the main scale is provided with a first scale area, and the measuring base is provided with a second scale area, wherein the first scale area and the second scale area are correspondingly arranged.

[0006] Furthermore, the measuring base is provided with a positioning locking component, which is rotatably connected to the measuring base and can pass through the measuring base to tightly abut against the main scale.

[0007] Furthermore, the positioning locking element is configured as a screw, and the measuring base is provided with a threaded hole, the screw being threadedly connected to the threaded hole.

[0008] Furthermore, a clamp is provided at the bottom of the measuring base.

[0009] Furthermore, a third scale area is provided on the side of the measuring base away from the second scale area. The third scale area is offset towards the fixture by the thickness of the fixture, and the third scale area is provided in correspondence with the first scale area.

[0010] Furthermore, the clamp is arranged perpendicularly to the measuring base.

[0011] Furthermore, the clamp is integrally formed with the measuring base.

[0012] Furthermore, the measuring base has a T-shaped structure.

[0013] Furthermore, the value range of the first scale area is 0-200mm.

[0014] Furthermore, an electronic display screen is provided on the measuring base.

[0015] Compared with existing technologies, the advantages of this invention are as follows: The measuring tool of this invention uses a measuring base as its reference part to contact the reference surface of the rail being measured, ensuring measurement accuracy. A main scale is provided, with a sliding connection between the main scale and the measuring base, allowing the main scale to move flexibly on the base to adapt to different measurement needs. Measuring personnel can quickly adjust the position of the main scale on the measuring base, saving significant time and effort. The first and second scale areas are correspondingly set, allowing measuring personnel to read measurement results more accurately through the coordination of the two scale areas without moving the measuring base, reducing additional errors caused by moving the measuring base and further improving measurement accuracy. This measuring tool is applicable to the measurement needs of various rail transit systems. Whether measuring the width of the guard rail flange groove or checking for rail misalignment, this tool provides accurate and reliable measurement results, enhancing its applicability and flexibility. This allows measuring personnel to more flexibly handle different measurement tasks, meeting the high-precision and high-efficiency measurement requirements of rail transit systems. Attached Figure Description

[0016] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0017] Figure 1 This is a schematic diagram of the initial state structure of the measuring tool according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the measuring tool in use according to an embodiment of the present invention;

[0019] Figure 3 This is a front view of the measuring tool in use according to an embodiment of the present invention;

[0020] Figure 4 This is a side view of the measuring tool in use according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the rim groove width measurement according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of measuring the left and right misalignment of the rail joint according to an embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram illustrating the measurement of misaligned teeth on the upper and lower rail joints according to an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Measuring base; 11. Second scale area; 12. Third scale area; 2. Main scale; 21. First scale area; 3. Positioning and locking components; 4. Clamps; 5. Guard rails; 6. Rails. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and do not limit the scope of protection of this utility model.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0030] like Figures 1-4As shown, a measuring tool according to one embodiment of this utility model includes a measuring base 1 and a main scale 2. The main scale 2 is slidably connected to the measuring base 1. The main scale 2 is provided with a first scale area 21, the value range of which is 0-200mm. The measuring base 1 is provided with a second scale area 11, corresponding to the first scale area 21. The second scale area 11 is engraved with fine scale lines for reading the decimal part of the measured value. The measuring base 1 is the reference part of the measuring tool in this embodiment. Both the measuring base 1 and the main scale 2 are made of stainless steel or high-quality carbon steel, which has high strength, corrosion resistance and good processing performance. It is used to contact the reference surface of the rail 6 being measured to ensure the accuracy of the measurement and has sufficient rigidity. At the same time, the surface of the measuring base 1 is precision machined and polished to ensure that the roughness of the measuring surface meets the standard, thereby improving the measurement accuracy. By setting a main scale 2, which is slidably connected to the measuring base 1, the main scale 2 can move flexibly on the base to adapt to different measurement needs. The measuring personnel can quickly adjust the position of the main scale 2 on the measuring base 1, saving considerable time and effort. The first scale area 21 and the second scale area 11 are correspondingly set, allowing the measuring personnel to read the measurement results more accurately through the cooperation of the two scale areas without moving the measuring base 1, reducing additional errors caused by moving the measuring base 1 and further improving measurement accuracy. Of course, in other embodiments, the materials of the measuring base 1 and the main scale 2 can be set differently according to different needs.

[0031] As a preferred embodiment of this utility model, it may also have the following additional technical features: a positioning locking member 3 is provided on the measuring base 1, the positioning locking member 3 is rotatably connected to the measuring base 1, the positioning locking member 3 can pass through the measuring base 1 and tightly abut against the main scale 2, the positioning locking member 3 is used to fix the main scale 2, ensuring that the main scale 2 remains stable during the measurement process and improving the accuracy of the measurement. In this embodiment, the positioning locking member 3 is set as a screw, the measuring base 1 is provided with a threaded hole, and the screw is threadedly connected to the threaded hole. The screw is tightly engaged with the measuring base 1 through the threaded connection, which can generate a large frictional force, thereby effectively fixing the main scale 2 and ensuring that the main scale 2 does not shake or shift during the measurement process.

[0032] As a preferred embodiment of this utility model, it may also have the following additional technical features: a clamp 4 is provided at the bottom of the measuring base 1, which can directly clamp the working edge of the rail 6 during measurement, and can eliminate the visual error of the arc-shaped cross-section of the rail head of the rail 6 when reading. In this embodiment, the clamp 4 is integrally formed with the measuring base 1, and the clamp 4 is set perpendicular to the measuring base 1, ensuring the verticality of the line of sight during measurement and further reducing measurement error. When measuring the flange groove width, the clamp 4 is used to closely fit the non-working edge of the rail 6 to ensure that the line of sight is not affected by the arc-shaped cross-section of the rail head of the rail 6 when measuring the flange groove, thus ensuring the accuracy of the measurement results. Of course, in other embodiments, the size and shape of the clamp 4 should be customized according to the specifications of the rail 6 and the measurement requirements. At the same time, the shape of the clamp 4 should also match the cross-sectional shape of the rail 6 to reduce friction and wear.

[0033] As a preferred embodiment of this utility model, it may also have the following additional technical features: A third scale area 12 is provided on the side of the measuring base 1 away from the second scale area 11. The third scale area 12 is offset towards the clamp 4 by the thickness of the clamp 4. To eliminate the arc-shaped line-of-sight error of the rail head section of the rail 6, the thickness of the measuring clamp 4 is increased, so that when the clamp 4 is close to the rail 6, the measurer can still accurately read the measurement result through the third scale area 12 without reading error due to the presence of the clamp 4. The third scale area 12 is set corresponding to the first scale area 21. Fine scale lines are engraved in the third scale area 12 for reading the decimal part of the measurement value. Through the relative positional relationship with the first scale area 21 of the main scale 2, the measurer can directly read the measurement result through the third scale area 12 without moving the measuring base 1, thereby avoiding the additional error caused by moving the measuring base 1. The setting of the third scale area 12 makes it unnecessary for the measurer to frequently adjust the line of sight or the position of the measuring base 1 when reading the value, thereby simplifying the measurement process and improving measurement efficiency.

[0034] As a preferred embodiment of this utility model, it may also have the following additional technical features: the measuring base 1 is a T-shaped structure, with the main scale 2 set perpendicular to the measuring base 1. The protruding part of the T-shaped structure (i.e., the horizontal bar of the "T") facilitates contact with the reference surface of the rail 6 being measured. The second scale area 11 and the third scale area 12 are both set in the vertical bar of the "T". The clamp 4 is set on the side of the horizontal bar of the "T" away from the vertical bar of the "T".

[0035] As a preferred embodiment of this utility model, it may also have the following additional technical features: an electronic display screen is provided on the measuring base 1 to improve the readability of the measurement results and reduce the possibility of misreading and misjudgment.

[0036] The working principle of the measuring tool in this embodiment is as follows: Please refer to... Figure 5When measuring the flange groove width, first place the measuring base 1 on the surface of the base rail, with the clamp 4 pressed tightly against the working edge of the base rail at the position to be measured. Push the main scale 2 against the working edge of the guard rail 5. The readings from the first scale area 21 and the third scale area 12 are the measured flange groove width. Please refer to [link / reference]. Figures 6-7 When inspecting the misalignment of rail 6, first place the measuring base 1 against the protruding side of the working edge (top surface of rail 6) of rail 6, push the main ruler 2, and press the end of the main ruler 2 against the corresponding working edge (top surface of rail 6). Tighten the screws to fix the main ruler 2. Read the depth dimension according to the readings of the first scale area 21 and the second scale area 11. This dimension is the value of the misalignment of the joint of rail 6.

[0037] The measuring tool in this embodiment has a reasonable structural design and is easy to use. This structure can also be used for other equipment with similar usage requirements. In this embodiment, the measuring tool can be applied to the measurement needs of various rail transit systems. Whether it is measuring the width of the wheel flange groove of the guard rail or checking the misalignment of the rail teeth, the tool can provide accurate and reliable measurement results, which enhances the applicability and flexibility of the measuring tool. This allows measuring personnel to deal with different measurement tasks more flexibly and meets the needs of rail transit systems for high-precision and high-efficiency measurement.

[0038] In the description of the above embodiments, "greater than," "less than," and "exceeding" are understood to exclude the stated number; "several" and "more than" mean one or more; and "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A measuring tool, characterized in that, include: Measuring base (1); The main scale (2) is slidably connected to the measuring base (1). The main scale (2) is provided with a first scale area (21), and the measuring base (1) is provided with a second scale area (11). The first scale area (21) and the second scale area (11) are correspondingly provided.

2. The measuring tool according to claim 1, characterized in that, The measuring base (1) is provided with a positioning locking member (3), which is rotatably connected to the measuring base (1). The positioning locking member (3) can pass through the measuring base (1) and closely abut against the main scale (2).

3. The measuring tool according to claim 2, characterized in that, The positioning locking component (3) is configured as a screw, and the measuring base (1) is provided with a threaded hole, and the screw is threadedly connected to the threaded hole.

4. The measuring tool according to claim 1, characterized in that, The bottom of the measuring base (1) is provided with a clamp (4).

5. The measuring tool according to claim 4, characterized in that, The measuring base (1) has a third scale area (12) on the side away from the second scale area (11). The third scale area (12) is offset towards the clamp (4) by the thickness of the clamp (4). The third scale area (12) is corresponding to the first scale area (21).

6. The measuring tool according to claim 4, characterized in that, The clamp (4) is set perpendicular to the measuring base (1).

7. The measuring tool according to claim 4, characterized in that, The clamp (4) is integrally formed with the measuring base (1).

8. The measuring tool according to claim 1, characterized in that, The measuring base (1) has a T-shaped structure.

9. The measuring tool according to any one of claims 1-8, characterized in that, The value range of the first scale area (21) is 0-200mm.

10. The measuring tool according to any one of claims 1-8, characterized in that, An electronic display screen is provided on the measuring base (1).

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