Steel rail hole height and hole diameter measuring device

Abstract

The utility model discloses a steel rail hole height and hole diameter measuring device which comprises a main scale and a vernier scale. Wherein the vernier caliper is sleeved on the main scale, and a main scale aperture measuring jaw and a vernier scale aperture measuring jaw are respectively designed on the upper sides of the front ends of the vernier caliper and the main scale; a main scale measuring jaw is designed on the lower side of the front end of the main scale, and a measuring cone is designed on the lower side of the front end of the vernier scale. The aperture size in the measurement range can be measured independently and quickly through the measurement cone; and if the to-be-measured aperture exceeds the measuring range of the measuring cone, aperture measurement is realized through the main scale aperture measuring jaw and the vernier scale aperture measuring jaw. And meanwhile, the measuring cone is inserted into the hole to be measured, and the large measuring claw of the main ruler is moved to be attached to the rail bottom, so that hole height measurement can be realized. The device is simple in structure, convenient in measurement and accurate in measurement result.

Description

Technical Field

[0001] The utility model relates to the technical field of railway measurement, in particular to a device for measuring the hole height and hole diameter of a rail. Background Art

[0002] Turnout products are assembly parts. Various rail parts are assembled with spacers, limiters, top irons and other parts through bolts to work together. Therefore, there are many holes drilled on the rails. The processing quality of the hole diameter and hole height plays a decisive role in the assembly quality, so it is necessary to measure and inspect the hole diameter and hole height of each hole. When measuring with traditional measuring tools, it is necessary to measure the hole diameter first, then measure the distance from the bottom wall of the hole to the bottom of the rail, and calculate the distance from the center of the hole to the bottom of the rail (hole height). This process is relatively complicated, and the actual size of the hole diameter of each hole is different. The measurement intensity is large, and cumulative errors will be introduced during the calculation process, affecting the accuracy of the measurement. Utility Model Content

[0003] In view of the above problems, the utility model proposes a lightweight and accurate rail hole height and hole diameter measuring device, which is easy to carry, simple to use and can measure accurate data.

[0004] The utility model discloses a device for measuring the hole height and hole diameter of a rail, which comprises a main ruler and a vernier ruler.

[0005] The vernier scale is slidably sleeved on the main scale; and fastening bolts are installed on the vernier scale.

[0006] The upper side of the front end of the main ruler is designed with a main ruler aperture measuring claw; the lower side of the front end of the main ruler is designed with a main ruler large measuring claw.

[0007] The upper front side of the vernier scale is designed with a vernier scale aperture measuring claw; the lower front side of the vernier scale is designed with a measuring cone; the measuring cone is a cone structure, and the bottom surface is attached to and fixed to the lower side surface of the vernier scale.

[0008] When the above-mentioned vernier scale moves forward to the extreme position, the vernier scale aperture measuring jaw moves to the front of the main scale aperture measuring jaw, and the rear positioning edge of the vernier scale aperture measuring jaw is connected with the front positioning edge of the main scale aperture measuring jaw; at the same time, the 0 point on the main scale is aligned with the 0 point on the vernier scale.

[0009] Therefore, by inserting the measuring cone into the measured hole, the hole diameter can be measured quickly and independently; if the measured hole diameter exceeds the measuring cone range, the main scale hole diameter measuring jaw and the vernier scale hole diameter measuring jaw are inserted into the hole together, and the vernier is moved to achieve the hole diameter measurement. At the same time, by inserting the measuring cone into the measured hole and moving the main scale large measuring jaw to fit with the rail bottom, the hole height measurement can be achieved.

[0010] The advantages of the utility model are:

[0011] 1. The utility model rail hole height and hole diameter measuring device has high measuring accuracy and accurate results.

[0012] 2. The utility model rail hole height and hole diameter measuring device has integrated functions and a wide measuring range.

[0013] 2. The rail hole height and hole diameter measuring device of the utility model is small and exquisite and easy to carry.

[0014] 3. The rail hole height and hole diameter measuring device of the utility model is simple to operate and easy to learn. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the rail hole height and hole diameter measuring device of the utility model;

[0016] Figure 2 It is a schematic diagram of the connection mode of the measuring cone in the rail hole height and hole diameter measuring device of the utility model;

[0017] Figure 3 It is a schematic diagram of the forward limit position of the sliding scale in the rail hole height and hole diameter measuring device of the utility model;

[0018] Figure 4 It is a schematic diagram of the position relationship between the main scale and the upper measuring claw of the vernier scale when the vernier scale in the rail hole height and hole diameter measuring device of the utility model moves forward to the limit position;

[0019] Figure 5 It is a schematic diagram of the measuring method of the measuring cone aperture in the rail hole height and aperture measuring device of the utility model;

[0020] Figure 6 It is a schematic diagram of the hole diameter measurement method of the measuring claw of the rail hole height and hole diameter measuring device of the utility model;

[0021] Figure 7 This is a schematic diagram of the hole height measurement method of the rail hole height and hole diameter measurement device of the utility model; DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model of the rail hole height and hole diameter measuring device is as follows Figure 1 As shown, it includes a main scale 1 and a vernier scale 2.

[0024] The main ruler 1 is a straight ruler, with a main ruler aperture measuring claw 101 on the upper side of the front end and a main ruler large measuring claw 102 on the lower side of the main ruler 1. A scale is designed on the lower side wall of the main ruler 1 along the length direction of the main ruler 1.

[0025] The front part of the main scale aperture measuring jaw 101 is formed by the intersection of two planes, and the intersection line is the positioning edge of the main scale aperture measuring jaw 101, which is perpendicular to the main scale 1. The rear side surface of the main scale aperture measuring jaw 101 is an inclined surface with the top tilted forward.

[0026] The rear side of the main ruler claw 102 is a plane perpendicular to the main ruler 1, and the front side is an inclined surface with the bottom tilted backwards, which reduces the weight of the ruler and facilitates measurement.

[0027] The vernier scale 2 is a straight ruler, which fits the main scale 1 and is arranged on the back of the main scale 1. The upper and lower sides of the rear part of the vernier scale 2 have relatively bent parts, forming a U-shaped groove along the length of the scale body, which are respectively plugged into the upper and lower sides of the main scale 1, so that the vernier scale 2 is sleeved on the main scale 1 and can slide along the main scale 1. At the same time, the outer wall surface of the U-shaped groove on the lower side of the vernier scale 2 is designed with scales along the length of the vernier scale 2;

[0028] A vernier scale aperture measuring claw 201 is designed on the upper front side of the vernier scale 2, and a measuring cone 202 is designed on the lower front side of the vernier scale 2. A fastening screw 203 is installed in the hole of the vernier scale 2, and the position of the vernier scale 2 is fixed by tightening the fastening screw 203.

[0029] The structure and size of the vernier scale aperture measuring jaw 201 are the same as those of the main scale aperture measuring jaw 101, and the two are mirror images of each other; that is, the rear part of the vernier scale aperture measuring jaw 201 is composed of two intersecting planes, and the intersection line is the positioning edge of the vernier scale aperture measuring jaw 201; the front side surface of the vernier scale aperture measuring jaw 201 is an inclined surface with the top tilted backwards.

[0030] The measuring cone 202 is a conical structure, the bottom surface of which is attached to and fixed to the lower side of the vernier ruler 2; and the axis of the measuring cone 202 passes through the midline of the long direction of the vernier ruler 2, such as Figure 2 As shown. The tip of the measuring cone 202 is smoothly transitioned to avoid harm to the user. The tip of the measuring cone 202 is flush with the bottom end of the main scale claw 102. At the same time, a scale is designed on the outer wall of the measuring cone 202 along a generatrix of the cone. The scale faces the front of the main scale 1 and is for different cross-sectional diameter values ​​of the measuring cone. A rectangular cross-section groove is also provided on the front side of the measuring cone 202. The bottom surface of the groove is located at the center axis of the measuring cone 202, and the upper and lower ends pass through the tip and bottom surface of the measuring cone 202. The width of the groove is equal to the size of the main scale aperture measuring claw 201, so that the main scale claw 101 can be inserted into the groove, as shown in FIG. Figure 3As shown. When the vernier scale 2 moves forward until the main scale jaw 101 is inserted into the groove on the front side of the measuring cone 202 to the limit position, the bottom surface of the main scale jaw 101 is completely in contact with the bottom surface of the groove, and the vernier scale 2 reaches the limit of forward movement and cannot move forward any further. At this time, the front end of the outer circumference of the bottom surface of the measuring cone 202 is tangent to the front end surface of the main scale 1; the vernier scale aperture jaw 201 moves to the front of the main scale aperture jaw 101, and the rear positioning edge of the vernier scale aperture jaw 201 is connected to the front positioning edge of the main scale aperture measuring jaw 101, as shown. Figure 4 As shown; at the same time, the 0 point on the main scale 1 is aligned vertically with the 0 point on the vernier scale 2.

[0031] When the rail hole height and hole diameter measuring device of the above structure is used to measure the hole diameter, when the hole diameter is within the measuring range of the measuring cone 202, the hole diameter can be quickly measured through the measuring cone 202. Figure 5 As shown, during measurement, the measuring cone 202 is inserted into the aperture to be measured to ensure that the center line of the measuring cone is in line with the center line of the aperture, so that the outer wall of the measuring cone 202 is completely fitted with the edge of the aperture end in the circumferential direction. At this time, the scale reading on the surface of the measuring cone 202 is directly read, which is the aperture size of the hole.

[0032] When the aperture is outside the measuring cone range, the aperture is measured by the main scale aperture jaws 101 and the vernier scale aperture jaws 201. Figure 6 As shown, when measuring, move the vernier ruler 2 forward to the limit position, at this time, place the main ruler aperture jaw 101 and the vernier ruler aperture jaw 201 together in the hole to be measured on the rail, then fit the lower side of the main ruler 1 to the surface of the rail, and adjust the main ruler 1 so that the main ruler 1 is vertical and parallel to the surface of the rail (the lower side of the main ruler 1 is parallel to the rail surface, and the front side is perpendicular to the rail surface). Then, move the vernier ruler 2 to the rear of the main ruler 2, so that the positioning surfaces on the main ruler aperture jaw 101 and the vernier ruler aperture jaw 201 are respectively in line contact with the relative position of the inner wall of the hole; at this time, tighten the fixing screws, directly read the scale values ​​on the main ruler 1 and the vernier caliper 2, or read them after removing the measuring device, and the read value is the hole diameter value.

[0033] When the rail hole height and hole diameter measuring device of the above structure performs hole height measurement, it is realized through the measuring cone 202 and the main scale claws. Figure 7 As shown, when measuring, adjust the position of the vernier so that the distance between the axis of the measuring cone and the rear side of the large claws of the main scale is greater than the distance between the axis of the hole to be measured on the rail and the bottom of the rail. Then insert the measuring cone 202 into the hole along the axis of the hole to be measured, ensure that the center line of the measuring cone is in line with the center line of the aperture, and make the outer wall of the measuring cone 202 completely fit the circumference of the edge of the aperture end; finally move the main scale 1 upward so that the rear side of the large claws of the main scale fits the bottom of the rail; at this time, tighten the fixing screws, directly read the scale values ​​on the main scale 1 and the vernier caliper 2 or remove the measuring device to read, and the read value is the hole height value.

Claims

1. A rail hole height and hole diameter measuring device, comprising a main scale and a vernier scale; the vernier scale is slidably sleeved on the main scale; a fastening bolt is installed on the vernier scale; the characteristics are: The upper side of the front end of the main ruler is designed with a main ruler aperture measuring claw; the lower side of the front end of the main ruler is designed with a main ruler large amount claw; The upper front side of the vernier scale is designed with a vernier scale aperture measuring claw; the lower front side of the vernier scale is designed with a measuring cone; the measuring cone is a cone structure, the bottom surface is attached to and fixed to the lower side of the vernier scale; the outer wall of the measuring cone is designed with a scale along a generatrix of the measuring cone, and each scale indicates the diameter of the section; When the vernier scale moves forward to the limit position, the vernier scale aperture measuring jaw 201 moves to the front of the main scale aperture measuring jaw, and the rear positioning edge of the vernier scale aperture measuring jaw is connected with the front positioning edge of the main scale aperture measuring jaw; at the same time, the 0 point on the main scale is aligned with the 0 point on the vernier scale.

2. A rail hole height and hole diameter measuring device as claimed in claim 1, characterized in that: When the vernier scale moves forward to the limit position, the large claws are inserted into the groove on the front side of the measuring cone to the limit position, and at this time the bottom surface of the large claws of the main scale is completely in contact with the bottom surface of the groove and is located at the axis of the measuring cone.

3. A rail hole height and hole diameter measuring device as claimed in claim 1, characterized in that: The front part of the main scale aperture measuring jaw is composed of two planes intersecting, and the intersection line is the positioning edge of the main scale aperture measuring jaw; the rear part of the vernier scale aperture measuring jaw is composed of two planes intersecting, and the intersection line is the positioning edge of the vernier scale aperture measuring jaw; the rear side of the main scale large jaw is a plane perpendicular to the main scale body.

4. A rail hole height and hole diameter measuring device as claimed in claim 1, characterized in that: The tip of the measuring cone is flush with the bottom end of the main ruler jaws.

5. A rail hole height and hole diameter measuring device as claimed in claim 1, characterized in that: The tip of the measuring cone has a smooth transition.

6. A rail hole height and hole diameter measuring device as claimed in claim 1, characterized in that: When the vernier scale moves forward to the limit position, the front end of the outer circumference of the bottom surface of the measuring cone is tangent to the front end surface of the main scale.

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