Track bending radius measuring device

Abstract

The utility model relates to the technical field of measuring devices, in particular to a track bending radius measuring device, which comprises a standard distance measuring rod with the length of meter and used as a chord length measuring reference of two points; the detection device is vertically arranged on the center line of the standard distance measuring rod and is used for measuring the distance between the center of the guide rod and the inner side of the bent rail; the folding type extension handle is connected with the standard distance measuring rod through a 90-degree resistance hinge, forms a perpendicularity angle with the detection device during installation and is used for achieving single-person and single-hand measurement, and the track bending radius measuring device is convenient and efficient in measurement, safe, reliable, wide in application range, simple in structure, low in cost and suitable for popularization and application. The service life of equipment can be prolonged; and the transportation safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, specifically a track bending radius measuring device. Background Technology

[0002] To achieve efficient transportation in the auxiliary transportation system, our company actively promotes the application of monorail transportation systems. As of November 2024, the company had more than 10,000 meters of monorail tracks in use, and had realized a continuous auxiliary transportation system of underground locomotives and monorails, with monorails transporting materials directly to the mining face.

[0003] With the widespread adoption of monorail transportation systems, during the installation of monorail tracks, situations have arisen where improper selection of curved rails has resulted in a horizontal bending radius of less than 4 meters for the track and less than 6 meters for the curved rails of the hoisting support line. When the bending radius of the monorail locomotive does not meet the standard, it exacerbates wear on the curved rails, shortens the track's lifespan, and easily damages the locomotive's connection points. Therefore, in response to the above situation, there is an urgent need to develop a track bending radius measuring device to overcome the shortcomings in current practical applications. Utility Model Content

[0004] The purpose of this invention is to provide a track bending radius measuring device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A track bending radius measuring device, comprising:

[0007] A standard distance measuring rod, with a length of one meter, is used as a reference for measuring the chord length between two points.

[0008] The detection device is vertically installed on the center line of the standard distance measuring rod and is used to measure the distance from the center of the guide rod to the inside of the curved rail.

[0009] The folding extension handle is connected to the standard ranging rod via a resistance hinge. When installed, it is perpendicular to the detection device, enabling single-person, single-hand measurement.

[0010] As a further embodiment of this utility model: the detection device includes:

[0011] The outer casing is fixedly mounted on the standard rangefinder.

[0012] A spring, which is mounted inside the housing;

[0013] The device has a central shaft, one end of which is installed inside the spring, and the other end passes through the central hole of the device end cover.

[0014] And a ejector pin, which is mounted at the top center of the central axis of the device on the end cap side of the device;

[0015] The device end cap and the outer shell are fixedly connected by bolts to form an integral component.

[0016] As a further embodiment of this utility model: the central shaft of the device has a protruding part in the middle, which is used to compress the spring to deform and generate a continuous reaction force.

[0017] As a further embodiment of this utility model: the length of the folding extension handle is 0.8 meters. When measuring, it is unfolded to form a T-shape with the standard distance measuring rod, and after measuring, it is retracted to form a straight line with the standard distance measuring rod.

[0018] As a further embodiment of this utility model: a 30mm mounting platform is provided below the detection device for horizontal mounting on the centerline of the standard distance measuring rod and for fixing with bolts.

[0019] As a further embodiment of this utility model, the installation position of the folding extension handle is offset by 30mm from the centerline of the standard distance measuring rod to avoid overlapping with the position of the mounting bolt.

[0020] As a further embodiment of this utility model: the two ends of the standard distance measuring rod are used to make close contact with the monorail track, and the pin of the detection device is used to contact the inner side of the track, and the bending radius of the track is displayed by measuring the scale lines.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. Convenient and efficient measurement:

[0023] By reading the measured distance and directly obtaining the bending radius based on the preset list of data, the complex calculation process is eliminated, thus improving measurement efficiency.

[0024] The device is easy to operate; one person can complete the measurement with just one hand, without the need for multiple people to cooperate or to work at height.

[0025] 2. Safe and reliable:

[0026] This solves the problem that it is difficult for personnel to directly measure when the monorail track is relatively high (about 2.6 meters), avoiding the use of ladders or climbing equipment and reducing operational risks;

[0027] It can quickly identify whether the bending radius meets the standard (such as a minimum of 6 meters), preventing locomotive jamming, track deformation or equipment damage due to improper selection.

[0028] 3. Wide range of applications:

[0029] It is not only suitable for monorail tracks, but also for measuring equipment with regular bending radii such as locomotive tracks, making it highly versatile;

[0030] It is particularly suitable for accurate detection of the turning radius (≥8 meters) during the transportation of the entire support frame, avoiding equipment damage or transportation accidents caused by incorrect selection.

[0031] 4. Simple structure and low cost:

[0032] The device mainly consists of a standard rangefinder, a detection device, and a folding extension handle. It is simple to manufacture and inexpensive.

[0033] It features a foldable design, making it easy to carry and store, and suitable for underground working environments.

[0034] 5. Extend equipment lifespan:

[0035] By accurately measuring the bending radius, we ensure that the monorail locomotive runs on a standard track, reducing wear on the curved rails and extending the service life of the connection between the track and the locomotive.

[0036] This avoids problems such as track deformation and locomotive drive wheel damage caused by insufficient bending radius, thereby reducing maintenance costs.

[0037] 6. Improve transportation safety:

[0038] It can detect and correct non-standard curved rails in advance, prevent the risk of monorail cranes derailing or falling due to track problems, and ensure the safety of underground transportation;

[0039] Reduce equipment failures and downtime caused by incorrect track selection, and improve the continuity and reliability of auxiliary transportation systems. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the main structure of the track bending radius measuring device of this utility model.

[0041] Figure 2 This is a side view of the track bending radius measuring device of this utility model.

[0042] Figure 3 This is an enlarged structural schematic diagram of the detection device in this utility model.

[0043] Figure 4 This is a schematic diagram of the calibration of the detection device in this utility model.

[0044] In the diagram: 1-Standard distance measuring rod, 2-Detection device, 21-Outer shell, 22-Measuring scale line, 23-Device central shaft, 24-Device end cap, 25-Ejector pin, 26-Mounting platform, 3-Folding extension handle, 4-90-degree resistance hinge. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0047] Please see Figures 1-3 The present invention provides a track bending radius measuring device, comprising:

[0048] Standard distance measuring rod 1, with a length of 1 meter, is used as a reference for measuring the chord length at two points;

[0049] The detection device 2 is vertically installed on the center line of the standard distance measuring rod 1 and is used to measure the distance from the center of the guide rod to the inside of the curved rail;

[0050] The folding extension handle 3 is connected to the standard distance measuring rod 1 via a 90-degree resistance hinge 4. When installed, it is perpendicular to the detection device 2 at a 90-degree angle, which is used to realize single-person, single-hand measurement.

[0051] The detection device 2 includes:

[0052] The outer casing 21 is fixedly mounted on the standard distance measuring rod 1;

[0053] A spring, which is installed inside the housing 21;

[0054] The device has a central shaft 23, one end of which is installed inside the spring, and the other end passes through the central hole of the device end cover 24.

[0055] And a ejector pin 25, which is mounted on the top center of the central axis 23 of the device on the side of the device end cover 24;

[0056] The device end cap 24 and the outer shell 21 are fixedly connected by bolts to form an integral component.

[0057] The device has a protruding part in the middle of the central shaft 23, which is used to compress the spring and generate a continuous reaction force.

[0058] The foldable extension handle 3 is 0.8 meters long. When measuring, it unfolds to form a T-shape with the standard distance measuring rod 1, and after measuring, it retracts to form a straight line with the standard distance measuring rod 1.

[0059] The detection device 2 is provided with a 30mm mounting platform 26 below it, which is used to be horizontally installed on the center line of the standard distance measuring rod 1 and fixed by bolts.

[0060] The installation position of the folding extension handle 3 is offset by 30mm from the centerline of the standard distance measuring rod 1 to avoid overlapping with the position of the mounting bolt.

[0061] The two ends of the standard measuring rod 1 are used to make close contact with the monorail track, and the pin 25 of the detection device 2 is used to contact the inside of the track, and the bending radius of the track is displayed by measuring the scale line 22.

[0062] This device utilizes the principle of drawing a circle using two points with radii. It draws a circle using two points of a certain length (in this case, two points spaced 1 meter apart) and a certain radius (the radius can be selected according to specific needs; in this design, the minimum bending radius of a monorail is 6 meters, and for a heavy rail, it is 8 meters). Then, it calculates the perpendicular distance from the center of the two fixed points to the intersection of the circle. The calculated distance is used to design the length of the measuring rod (i.e., standard distance measuring rod 1), and the scale is marked. When the scale displays the bending radius calculation line of 6 meters, the bending radius of the monorail is 6 meters. Between 6 meters and 8 meters, intermediate bending radius scale lines of 6.5 meters, 7 meters, and 7.5 meters can be set (i.e., measurement scale line 22). The bending radius of the track can then be directly displayed based on the scale line display.

[0063] In summary, this device consists of a standard distance measuring rod 1, a detection device 2, and a folding extension handle 3. The standard distance measuring rod 1 serves as the reference for measuring the axial length of two points. The detection device 2 has a 30mm mounting platform 26 below it for horizontal installation on the centerline of the standard distance measuring rod. The lower part is fixed with bolts. After installation, the centerline of the detection device 2 coincides with the centerline of the standard distance measuring rod 1. The folding extension handle 3 is connected to the standard distance measuring rod 1 through a 90-degree resistance hinge 4. During installation, it is perpendicular to the detection device 2 at a 90-degree angle, and the installation position is 30mm off the centerline of the standard distance measuring rod 1 to avoid overlapping of the mounting bolt positions.

[0064] The standard distance measuring rod 1 can be selected according to the actual situation. The length of the distance measuring rod affects the scale data of the detection device 3. Since the length of the curved rail of the monorail is 1.5 meters and the distance between the load-bearing wheel and the drive wheel of the monorail is generally 1 meter, in order to more accurately measure the bending radius of the rail between the two wheels and improve the accuracy of the data, a 1-meter standard distance measuring rod is selected in this case.

[0065] The detection device 2 is vertically mounted on the centerline of the standard distance measuring rod 1. It consists of a housing 21, a spring, a central shaft 23, an end cap 24, and a pin 25. During installation, the spring is installed inside the housing 21, and the 50mm end of the central shaft 23 is installed inside the spring. The end cap 24 passes through the 45mm end of the central shaft 23 and is tightly connected to the housing 21, secured with three bolts to form a single unit. At this point, 30mm of the central shaft 23 protrudes from the end cap 24, and 10mm protrudes from the rear end (the end without the end cap 24). The pin 25 is then installed at the top center of the central shaft on the side of the end cap 24. During measurement, the pin 25 contacts the track being measured. Depending on the measurement interval, the central shaft 23 displaces to varying degrees. During displacement, the protruding part in the middle of the central shaft 23 compresses the spring, generating a continuous reaction force to prevent displacement of the central shaft 23 in its free state and to restore the central shaft 23 to its initial state.

[0066] The monorail is typically installed about 2.6 meters above the ground. To facilitate measurement, a 0.8-meter-long foldable extension handle 3 is designed. When measuring, it unfolds to form a T-shape with the standard distance measuring rod 1, and after measuring, it retracts to form a straight line with the standard distance measuring rod 1, making it easy to carry.

[0067] like Figure 4 As shown, before use, calibration is required. 1. Push the ejector pin 25 so that the measuring scale mark "6" is flush with the plane of point C. Measure whether the parallel distance between point A and point B is equal to 20.9mm. If not, adjust the ejector pin to make the parallel distance between point A and point B equal to 20.9mm.

[0068] 2. Push the ejector pin 25 so that the measuring scale mark "8" is flush with the plane of point C. Measure whether the parallel distance between point A and point B is equal to 15.6mm. If not, adjust the ejector pin to make the parallel distance between point A and point B equal to 15.6mm.

[0069] The measuring device is calibrated by calibrating two scales.

[0070] During measurement, open the folding extension handle 3 to form a T-shape with the standard measuring rod 1, and then bring both ends of the standard measuring rod 1 close together with the monorail. At this time, the measuring axis pin 25 is in contact with the rail. The bending radius of the rail can be measured according to the change of the measuring axis scale line.

[0071] Therefore, this device is simple to process and manufacture, effectively solving the problem of inaccurate identification of the bending radius when selecting and using curved rails for monorails, which leads to confusion in the use of curved rails. It effectively prevents monorails and locomotives from running on tracks with incorrect bending radii, thus preventing potential hazards such as locomotive jamming, damage, and track deformation. It also solves the problem of inconvenient measurement of bending radii for existing curved rails located at high positions, especially when some support frames require a bending radius of at least 8 meters during transport and turning. Incorrect selection and use can cause significant damage to equipment and transport lines, posing risks such as damage to drive wheels and deformation of the curved rails, potentially leading to damage or even the fall of the monorail locomotive. This device is inexpensive, allows for early detection and timely mitigation of potential hazards, and improves the safety and reliability of locomotive operation. It has high application value in measuring the bending radius of monorail locomotive tracks, locomotive tracks, and other equipment.

[0072] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0073] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for measuring the bending radius of a track, characterized in that, include: Standard distance measuring rod (1) is used as a reference for measuring the chord length at two points; The detection device (2) is vertically installed on the center line of the standard distance measuring rod (1) and is used to measure the distance from the center of the guide rod to the inside of the curved rail; The folding extension handle (3) is connected to the standard distance measuring rod (1) via a 90-degree resistance hinge (4). When installed, it is perpendicular to the detection device (2) at a 90-degree angle, which is used to realize single-person single-hand measurement.

2. The track bending radius measuring device according to claim 1, characterized in that, The detection device (2) includes: The outer casing (21) is fixedly mounted on the standard distance measuring rod (1); A spring, which is installed inside the housing (21); The device has a central shaft (23), one end of which is installed inside the spring, and the other end passes through the central hole of the device end cover (24); And a ejector pin (25), which is mounted on the top center of the central axis (23) of the device on the side of the device end cap (24); The device end cap (24) and the outer shell (21) are fixedly connected by bolts to form an integral component.

3. The track bending radius measuring device according to claim 2, characterized in that, The device has a protruding part in the middle of the central shaft (23) for compressing the spring to deform and generate a continuous reaction force.

4. The track bending radius measuring device according to claim 1, characterized in that, The folding extension handle (3) is 0.8 meters long. When measuring, it unfolds to form a T-shape with the standard distance measuring rod (1), and after measuring, it retracts to form a straight line with the standard distance measuring rod (1).

5. The track bending radius measuring device according to claim 1, characterized in that, The detection device (2) is provided with a 30mm mounting platform (26) below it, which is used to be horizontally installed on the center line of the standard distance measuring rod (1) and fixed by bolts.

6. The track bending radius measuring device according to claim 1, characterized in that, The installation position of the folding extension handle (3) is offset from the centerline of the standard distance measuring rod (1) by 30mm to avoid overlapping with the position of the mounting bolt.

7. The track bending radius measuring device according to claim 1, characterized in that, The two ends of the standard measuring rod (1) are used to make close contact with the monorail track, and the pin (25) of the detection device (2) is used to contact the inside of the track and display the bending radius of the track by measuring the scale line (22).

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