A rail twist gauge

Abstract

This utility model relates to the field of track measurement technology, and in particular to a rail torsion measuring ruler, comprising a connecting rod, a calibration block, a fixed measuring base, and a movable measuring base. Fixed probes are provided at both ends of the fixed measuring base and at one end of the movable measuring base. A measuring rod frame, a measuring rod, and a movable probe are provided at the other end of the movable measuring base. The measuring rod frame is fixedly connected to the movable measuring base, and the measuring rod frame is provided with a reading unit. The movable probe is located at the bottom of the measuring rod. An upper calibration plate is provided on the upper part of the measuring rod, and a lower calibration plate is provided on the measuring rod frame. Before measurement, the upper and lower calibration plates are tightly attached to both ends of the calibration block, ensuring that the measuring surfaces of the three fixed probes and the measuring surface of the movable probe are in the same plane, thus achieving leveling of the torsion measuring ruler before measurement. This utility model eliminates the need for leveling the torsion measuring ruler before measurement using a standard, large-area plane, making the measurement work simple and quick, and improving measurement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of track measurement technology, and in particular to a gauge for measuring the torsion of rails. Background Technology

[0002] The torsion of rails is a key technical indicator during rail production, laying, and maintenance. Accurate measurement of rail torsion is crucial for ensuring rail quality and improving train safety and comfort. Currently, rail torsion measuring rulers are widely used to measure rail torsion. These rulers are specialized instruments that measure the torsion of rails over a 1-meter length using the rail base plane. The measuring principle involves four measuring surfaces (or points) connected by a connecting rod. Three of these are fixed measuring surfaces (or points) on the same plane, while the fourth is a movable measuring surface installed at the front of the measuring rod. By measuring the distance from the movable measuring surface to the plane formed by the three fixed measuring surfaces, the rail torsion value can be obtained.

[0003] However, existing measuring rulers have significant drawbacks: before measurement, the four measuring surfaces (or points) must be leveled to ensure they are on the same plane, guaranteeing an accurate and reliable reference plane for obtaining precise measurement results. However, this leveling process requires a large, flat surface, which is extremely difficult to find in actual measurement scenarios, whether in the complex working environment of a rail production workshop or at on-site laying and maintenance locations along railway lines. This leads to difficulties in finding a suitable leveling surface, hindering the effective leveling of the measuring ruler's support points, forcing measurement work to be interrupted, or resulting in significant deviations in the measurement results, severely impacting the accuracy and efficiency of rail torsion measurement. Utility Model Content

[0004] The purpose of this utility model is to provide a rail torsion measuring ruler to address the shortcomings of existing technologies and solve the aforementioned technical problems.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a rail torsion measuring ruler, including a connecting rod and a calibration block. A fixed measuring base and a movable measuring base are respectively provided at both ends of the connecting rod. A fixed measuring head is provided at both ends of the fixed measuring base and at one end of the movable measuring base. A measuring rod frame, a measuring rod, and a movable measuring head are provided at the other end of the movable measuring base. The measuring rod frame is fixedly connected to the movable measuring base. The measuring rod frame is provided with a reading unit. The measuring rod is slidably connected to the measuring rod frame. The movable measuring head is located at the bottom of the measuring rod. An upper calibration plate is provided on the upper part of the measuring rod, and a lower calibration plate corresponding to the upper calibration plate is provided on the measuring rod frame.

[0006] Furthermore, the measuring rod is set vertically.

[0007] Furthermore, the calibration block has two parallel and smooth surfaces.

[0008] Furthermore, the reading unit is a vernier scale and / or a digital display.

[0009] Furthermore, the connecting rod, the fixed measuring base, or the movable measuring base is provided with a storage box for storing the calibration block.

[0010] Furthermore, near one end of the fixed probe, both the fixed probe base and the movable probe base are provided with side positioning plates.

[0011] Furthermore, the probe frame is provided with a locking unit, preferably a locking nut, which is threadedly connected to the probe frame. Alternatively, the locking unit includes a locking nut and a pressure plate, the pressure plate increasing the contact area between the locking unit and the probe.

[0012] The beneficial effects of this utility model are as follows: By setting a measuring rod frame, measuring rod, movable measuring head, upper calibration plate, and lower calibration plate on the movable measuring base, and placing a calibration block with a certain shape between the upper and lower calibration plates before measurement, and ensuring that the upper and lower calibration plates are in close contact with the ends of the calibration block, the measuring surfaces of the three fixed measuring heads and the measuring surface of the movable measuring head are located in the same plane, thereby achieving leveling of the torsion measuring ruler before measurement. This utility model eliminates the need for a standard, large-area plane to level the torsion measuring ruler before measurement, making the measurement work simple and quick, and improving measurement efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 A magnified view of the local structure.

[0015] Figure 3 yes Figure 1 The left view.

[0016] Figure 4 yes Figure 1 The right view.

[0017] Figure 5 This is a partial structural schematic diagram of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1—Connecting rod, 2—Calibration block, 3—Fixed probe, 4—Modible probe, 5—Fixed probe, 6—Probe frame, 7—Probe, 8—Modible probe, 9—Reading unit, 10—Upper calibration plate, 11—Lower calibration plate, 12—Side positioning plate, 13—Locking unit. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the present invention.

[0020] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-5 As shown, a rail torsion measuring ruler according to this embodiment includes a connecting rod 1 and a calibration block 2. A fixed measuring base 3 and a movable measuring base 4 are respectively provided at both ends of the connecting rod 1. A fixed measuring head 5 is provided at both ends of the fixed measuring base 3 and one end of the movable measuring base 4. A measuring rod frame 6, a measuring rod 7, and a movable measuring head 8 are provided at the other end of the movable measuring base 4. The measuring rod frame 6 is fixedly connected to the movable measuring base 4 and is provided with a reading unit 9. The measuring rod 7 is slidably connected to the measuring rod frame 6. The movable measuring head 8 is located at the bottom of the measuring rod 7. An upper calibration plate 10 is provided on the upper part of the measuring rod 7, and a lower calibration plate 11 is provided on the measuring rod frame 6. The upper and lower calibration plates are correspondingly provided. In this utility model, the calibration block 2 has a certain thickness. Before measurement, the upper calibration plate 10 and the lower calibration plate 11 contact the upper and lower surfaces of the calibration block 2 respectively, so that the measuring surfaces (or points) of the three fixed probes 5 and the measuring surfaces (or points) of the one movable probe 8 are located in the same plane, thus realizing the leveling operation before measurement.

[0023] The measuring rod 7 is set vertically, which can easily and quickly realize the leveling operation of the measuring ruler, and at the same time facilitate the rapid measurement of the rail torsion.

[0024] The calibration block 2 has two parallel and smooth surfaces, which facilitates close contact between the two planes of the upper calibration plate 10, the lower calibration plate and the calibration block 2, thereby improving measurement accuracy.

[0025] The reading unit 9 is a vernier scale and / or a digital display. The vernier scale is combined with the measuring rod 7 to form a measuring unit similar to a vernier ruler, thereby realizing manual measurement and reading. Alternatively, an electronic digital display can be used for measurement, which can display numbers or perform operations such as zeroing to realize the reading function.

[0026] The connecting rod 1, the fixed measuring base 3, or the movable measuring base 4 is provided with a storage box for storing the calibration block 2. After leveling the movable measuring head 8, the calibration block 2 between the upper calibration plates 10 is removed and placed into the storage box for easy storage.

[0027] Near one end of the fixed probe 5, the fixed measuring base 3 and the movable measuring base 4 are provided with side positioning plates 12. That is, the fixed probe 5 end of the fixed measuring base 3 and the movable measuring base 4 is provided with side positioning plates 12, and the two side positioning plates 12 are located on the same side of the connecting rod 1. During measurement, the side positioning plates 12 abut against the side edge of the rail strip, which facilitates the measurement and positioning of the rail torsion.

[0028] The measuring rod frame 6 is equipped with a locking unit 13 for locking and fixing the measuring rod 7 to the measuring rod frame 6, preventing relative sliding between the measuring rod 7 and the measuring rod frame 6. Preferably, the locking unit 13 is a locking nut, or the locking unit 13 includes a locking nut and a pressure plate. The length direction of the pressure plate is consistent with the length direction of the measuring rod 7, and the locking nut is rotatably connected to the pressure plate. The locking nut is threaded to the measuring frame. By rotating the locking nut, the end of the locking nut can be inserted into the measuring rod frame 6, thereby contacting the measuring rod 7 and locking it in place. The pressure plate increases the contact area between the measuring rod 7 and the locking unit 13, ensuring a secure locking effect.

[0029] The working principle of this utility model is as follows: Before measurement, loosen the locking unit 13, move the measuring rod 7, place the calibration block 2 between the upper calibration plate 10 and the lower calibration plate, and ensure that the two surfaces of the upper calibration plate 10, the lower calibration plate and the calibration block 2 are in contact. Then adjust or read the reading unit 9, such as recording or adjusting the reading of the vernier caliper, or clearing the display of the electronic digital display to zero, thus achieving the leveling of the measuring ruler before measurement. When starting the measurement, place the device of this utility model on the rail surface to be measured, and ensure that the side positioning plate 12 is in contact with the side of the rail surface to be measured. Keep the measuring surfaces (or points) of the three fixed measuring heads 5 of the measuring ruler in contact with the rail surface, push the measuring rod 7, so that the movable measuring head 8 contacts the rail surface, and read the value of the reading unit 9. This value or the difference between the two values ​​before and after the measurement is the torsion value of the rail surface to be measured.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A gauge for measuring the torsion of rails, characterized in that: The device includes a connecting rod (1) and a calibration block (2). The connecting rod (1) is provided with a fixed measuring seat (3) and a movable measuring seat (4) at both ends. The fixed measuring seat (3) and the movable measuring seat (4) are provided with a fixed probe (5) at both ends. The movable measuring seat (4) is provided with a measuring rod frame (6), a measuring rod (7) and a movable probe (8) at the other end. The measuring rod frame (6) is fixedly connected to the movable measuring seat (4). The measuring rod frame (6) is provided with a reading unit (9). The measuring rod (7) is slidably connected to the measuring rod frame (6). The movable probe (8) is located at the bottom of the measuring rod (7). The measuring rod (7) is provided with an upper calibration plate (10) at the top. The measuring rod frame (6) is provided with a lower calibration plate (11) corresponding to the upper calibration plate (10).

2. The rail torsion measuring ruler according to claim 1, characterized in that: The measuring rod (7) is set vertically.

3. A rail torsion measuring ruler according to claim 1, characterized in that: The calibration block (2) has two parallel and smooth surfaces.

4. A rail torsion measuring ruler according to claim 1, characterized in that: The reading unit (9) is a vernier scale and / or a digital display.

5. A rail torsion measuring ruler according to claim 1, characterized in that: The connecting rod (1), the fixed measuring base (3), or the movable measuring base (4) is provided with a storage box.

6. A rail torsion measuring ruler according to claim 1, characterized in that: Near one end of the fixed probe (5), the fixed probe base (3) and the movable probe base (4) are provided with side positioning plates (12).

7. A rail torsion measuring ruler according to claim 1, characterized in that: The measuring rod frame (6) is equipped with a locking unit (13).

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