A measurement platform based on a running rail

Abstract

The utility model provides a kind of measurement platform based on steel rail operation belongs to steel rail measurement technical field, solve the problem that existing technology cannot pass reverse turnout heart.It includes connecting crossbeam, and the side of connecting crossbeam is equipped with walking wheel assembly, and at least one side of connecting crossbeam is equipped with walking measurement wheel assembly;Walking measurement wheel assembly includes first support, and first support is provided with mounting seat, and mounting seat is rotatably connected with shaft, and shaft is connected with rotating arm, and rotating arm is rotatably installed with leaning wheel, and shaft is connected with elastic component.Measurement platform can be rolled on steel rail by walking wheel assembly and walking measurement wheel assembly;Walking measurement wheel assembly is adhered to inside of steel rail by elastic component in the process of running with leaning wheel, and corresponding track gauge can be calculated by measuring the rotation angle of shaft, and when reverse passing turnout heart, rotating arm can be rotated swing, to avoid turnout heart, ensure that measurement platform smoothly reverse passing turnout heart.

Description

Technical Field

[0001] This utility model belongs to the field of rail measurement technology, specifically to a measurement platform based on rail operation. Background Technology

[0002] There are numerous measurement parameters on both the rails and the overhead contact line, and most of them are measured using the top surface of the rails as the reference point. Therefore, measurement platforms based on rail movement are widely used in the field of rail transit measurement.

[0003] A measurement platform based on rail movement typically needs to possess three characteristics simultaneously: ① it must roll along the rails; ② it must be able to measure the current track gauge (rail gauge refers to the distance between two rails on a railway track, specifically measured within 16mm below the top surface of the rail); ③ it must be able to pass through turnouts in both forward and reverse directions.

[0004] Currently, rail-based measurement platforms generally fall into two categories: ① Wheelsets using a standard LMA tread structure run on the rail, coupled with optical measuring instruments to achieve the three characteristics mentioned above. The disadvantages of this technical solution are high complexity (low reliability) and high cost; ② Ordinary flat wheels run on the rail, coupled with measuring wheels and sensors that contact the rail surface 16mm below the rail surface, achieving both rail-based operation and track gauge measurement. Because one side relies on spring force to keep the measuring wheel pressed tightly against the inner side of the rail, when passing through a turnout in the opposite direction, the measuring wheel may be pushed into the wrong guide groove, preventing the mechanism from passing through the turnout's center in the opposite direction. This limits the application scenarios of the measurement platform in practical applications.

[0005] To solve the above problems, it is necessary to design a measurement platform that can reliably measure track gauge values, smoothly pass through turnouts in both forward and reverse directions, and smoothly roll on the rails at low cost. Utility Model Content

[0006] To address the aforementioned problems, the purpose of this utility model is to provide a measurement platform based on rail movement. The measurement platform can roll on the rail via a traveling wheel assembly and a traveling measuring wheel assembly. During operation, the traveling measuring wheel assembly uses an elastic component to keep the wheel in contact with the inner side of the rail. The corresponding track gauge can be calculated by measuring the rotation angle of the rotating shaft. Furthermore, when passing through the turnout point in the reverse direction, the rotating arm can rotate and swing to avoid the turnout point, ensuring that the measurement platform can smoothly pass through the turnout point in the reverse direction.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A rail-based measurement platform includes a connecting beam. A traveling wheel assembly for moving on the rail is mounted on one side of the connecting beam. At least one side of the connecting beam is also equipped with a traveling measuring wheel assembly for moving on the rail and measuring track gauge. The traveling measuring wheel assembly includes a first support mounted on the connecting beam. A mounting seat located inside the rail is provided on the first support. A vertically arranged rotating shaft is rotatably connected to the mounting seat. A rotating arm is fixedly connected to the lower end of the rotating shaft. A guide wheel that rotatably fits against the inner side of the rail is mounted on the end of the rotating arm away from the rotating shaft. An elastic component for maintaining the rotating arm perpendicular to the rail is connected to the rotating shaft.

[0009] Preferably, a side pulley is rotatably mounted on the rotating shaft.

[0010] Preferably, the elastic component includes at least two unidirectional torsion springs with opposite elastic force directions.

[0011] Preferably, the one-way torsion spring is movably sleeved on the rotating shaft, and a movable plate for fixing one end of the one-way torsion spring is fixedly installed on the rotating shaft, and a fixed seat for fixing the other end of the one-way torsion spring is installed on the first support.

[0012] Preferably, the mounting base is equipped with an angle sensor for detecting the rotation angle of the shaft.

[0013] Preferably, a first traveling wheel is rotatably mounted on the first support.

[0014] Preferably, the walking wheel assembly includes a second support mounted on a connecting beam, a second walking wheel rotatably mounted on the second support, and a support column fixedly connected to the inner side of the second support to rotatably engage with the second walking wheel.

[0015] Preferably, the second traveling wheel has several fixing holes circumferentially opened on the end face near the support column, and spring pins that cooperate with the fixing holes are installed on the support column.

[0016] Preferably, the lower end of the support column is rotatably connected to a wheel.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] The measuring platform can roll on the rail via the traveling wheel assembly and the traveling measuring wheel assembly. During operation, the traveling measuring wheel assembly uses an elastic component to keep the wheel in contact with the inside of the rail. The corresponding track gauge can be calculated by measuring the rotation angle of the rotating shaft. When passing through the turnout point in the reverse direction, the rotating arm can rotate and swing to avoid the turnout point, ensuring that the measuring platform can pass through the turnout point smoothly in the reverse direction. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for Embodiment 1 of the present utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the walking measuring wheel assembly provided in Embodiment 1 of this utility model;

[0022] Figure 3 A three-dimensional structural schematic diagram of the walking measuring wheel assembly provided in Embodiment 1 of this utility model from another perspective;

[0023] Figure 4 This is a three-dimensional structural diagram of the walking wheel assembly provided in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the overall structure provided for Embodiment 2 of the present utility model;

[0025] Figure 6 This is a schematic diagram of track gauge measurement provided in Embodiment 1 of this utility model.

[0026] Reference numerals: 1-Connecting crossbeam; 2-Walking measuring wheel assembly; 201-First support; 202-First walking wheel; 203-Moving plate; 204-One-way torsion spring; 205-Rotating shaft; 206-Side pulley; 207-Rotating arm; 208-Supporting wheel; 209-Fixed seat; 210-Mounting seat; 3-Walking wheel assembly; 301-Second support; 302-Second walking wheel; 303-Spring pin; 304-Fixing hole; 305-Support column; 306-Rotating wheel. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are 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, and therefore should not be construed as a limitation of this utility model.

[0030] The following is combined Figures 1-6 This utility model will be described in detail.

[0031] Example:

[0032] A measurement platform based on rail movement includes a connecting beam 1. A traveling wheel assembly 3 for moving on the rail is installed on one side of the connecting beam 1, and a traveling measuring wheel assembly 2 for moving on the rail and measuring track gauge is installed on at least one side of the connecting beam 1. The traveling measuring wheel assembly 2 includes a first support 201 installed on the connecting beam 1. A mounting seat 210 located inside the rail is provided on the first support 201. A vertically arranged rotating shaft 205 is rotatably connected to the mounting seat 210. A rotating arm 207 is fixedly connected to the lower end of the rotating shaft 205. A guide wheel 208 that fits against the inner side of the rail is rotatably installed at the end of the rotating arm 207 away from the rotating shaft 205. An elastic component for keeping the rotating arm 207 perpendicular to the rail is connected to the rotating shaft 205.

[0033] The measuring platform can roll on the rail via the traveling wheel assembly 3 and the traveling measuring wheel assembly 2. During operation, the traveling measuring wheel assembly 2 uses an elastic component to keep the guide wheel 208 against the inner side of the rail. The corresponding track gauge can be calculated by measuring the rotation angle of the rotating shaft 205. When passing through the turnout point in the opposite direction, the rotating arm 207 can rotate and swing to avoid the turnout point, ensuring that the measuring platform can pass through the turnout point smoothly in the opposite direction. The elastic component includes at least two one-way torsion springs 204 with opposite elastic directions. In this embodiment, two one-way torsion springs 204 are provided and installed in opposite directions. The opening angle of the one-way torsion springs 204 is greater than or equal to 90°, so that the rotating arm 207 is perpendicular to the rail in the default state, and can stay close to the inner side of the rail under the elastic force of the one-way torsion springs 204 regardless of whether it deviates to the left or right. The guide wheel 208 can reduce the wear between the guide wheel 208 and the rail through its own rotation; the length of the rotating arm 207 is greater than 30mm.

[0034] A side pulley 206 is rotatably mounted on the rotating shaft 205. The side pulley 206 is used to limit the range of motion of the measuring platform on the track, and the rotation of the side pulley 206 avoids wear caused by contact between the rail and the side pulley 206; the radial center of the side pulley 206 is 16±5mm away from the top surface of the rail.

[0035] A one-way torsion spring 204 is movably sleeved on a rotating shaft 205. A movable plate 203 for fixing one end of the one-way torsion spring 204 is fixedly installed on the rotating shaft 205. A fixed seat 209 for fixing the other end of the one-way torsion spring 204 is installed on the first support 201. The fixed seat 209 can be detachably connected to the first support 201 by a screw. The fixed seat 209 is provided with a hole for inserting the end of the one-way torsion spring 204. The other end of the one-way torsion spring 204 abuts against the movable plate 203. The movable plate 203 can also be detachably connected to the rotating shaft 205 by a screw. During the rotation of the rotating shaft 205, the movable plate 203 will rotate synchronously, thereby driving one of the one-way torsion springs 204 to undergo elastic deformation, so that the guide wheel 208 fits against the inner side of the rail.

[0036] An angle sensor for detecting the rotation angle of the shaft 205 is installed in the mounting base 210. The angle sensor is existing technology and can monitor the rotation angle of the shaft 205 in real time and feed it back to the controller for relevant calculations, thereby obtaining the track gauge value in real time.

[0037] A first traveling wheel 202 is rotatably mounted on the first support 201. The first traveling wheel 202 is used to make rolling contact with the top surface of the rail to ensure the stable movement of the measuring platform.

[0038] The traveling wheel assembly 3 includes a second support 301 mounted on the connecting crossbeam 1, a second traveling wheel 302 rotatably mounted on the second support 301, and a support column 305 fixedly connected to the inner side of the second support 301, which rotatably engages with the second traveling wheel 302. The second traveling wheel 302 cooperates with the first traveling wheel 202 to move the measuring platform on the rail.

[0039] The second traveling wheel 302 has several fixing holes 304 circumferentially formed on its end face near the support column 305. A spring pin 303, which mates with the fixing holes 304, is installed on the support column 305. When the spring pin 303 is inserted into one of the fixing holes 304, it restricts the rolling of the second traveling wheel 302, thus keeping the entire measuring platform stationary. The spring pin 303 is existing technology. When it is necessary to release the locking of the second traveling wheel 302, the operator can pull the spring pin 303 and then rotate it a certain angle. At this time, the spring pin 303 remains in the state of being pulled out of the fixing hole 304, thus preventing the spring pin 303 from affecting the movement of the measuring platform.

[0040] A rotating wheel 306 is rotatably connected to the lower end of the support column 305. The rotating wheel 306 limits the range of motion of the measuring platform on the track and prevents wear caused by contact between the rail and the rotating wheel 306 through rotation. The radial center of the rotating wheel 306 is 16±5mm from the top surface of the rail; the center line connecting the side pulley 206 and the rotating wheel 306 is perpendicular to the rail, and the horizontal distance between the centers of the side pulley 206 and the rotating wheel 306 is 1385±30mm.

[0041] The principle of track gauge measurement is as follows: Figure 6 As shown: the rotating wheel 306 on one side needs to be kept in contact with the inner side of the rail, and the guide wheel 208 on the other side is in contact with the inner side of the rail by the rotation and swing of the rotating arm 207; the distance from the side pulley 206 at the guide wheel 208 to the rail on the other side is a fixed length L1, the distance from the guide wheel 208 to the side pulley 206 is L2, the rotation angle of the rotating arm 207 is measured by the angle sensor as a, the radius of the guide wheel 208 is r, and finally the track gauge L is calculated by the following formula: L = L1 + r + L2 * cosa.

[0042] In this embodiment, as Figure 1 As shown, two traveling measuring wheel assemblies 2 are provided on one side of the connecting beam 1, and two traveling wheel assemblies 3 are provided on the other side. In another embodiment, as... Figure 5 As shown, two traveling measuring wheel assemblies 2 are set on one side of the connecting beam 1, and one traveling wheel assembly 3 and one traveling measuring wheel assembly 2 are set on the other side. This arrangement can also realize the measurement of track gauge and can be adjusted according to actual needs.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A measurement platform based on rail movement, comprising a connecting beam (1), characterized in that, A traveling wheel assembly (3) for moving on the rail is installed on one side of the connecting beam (1), and a traveling measuring wheel assembly (2) for moving on the rail and measuring the track gauge is installed on at least one side of the connecting beam (1); the traveling measuring wheel assembly (2) includes a first support (201) installed on the connecting beam (1), a mounting seat (210) located inside the rail is provided on the first support (201), the mounting seat (210) is rotatably connected to a vertically arranged rotating shaft (205), a rotating arm (207) is fixedly connected to the lower end of the rotating shaft (205), a guide wheel (208) that fits against the inside of the rail is rotatably installed at the end of the rotating arm (207) away from the rotating shaft (205), and an elastic component for keeping the rotating arm (207) perpendicular to the rail is connected to the rotating shaft (205).

2. The measurement platform based on rail movement according to claim 1, characterized in that, A side pulley (206) is rotatably mounted on the shaft (205).

3. The measurement platform based on rail movement according to claim 1, characterized in that, The elastic component includes at least two unidirectional torsion springs (204) with opposite elastic force directions.

4. The measurement platform based on rail movement according to claim 3, characterized in that, The one-way torsion spring (204) is movably sleeved on the rotating shaft (205). A movable plate (203) for fixing one end of the one-way torsion spring (204) is fixedly installed on the rotating shaft (205). A fixed seat (209) for fixing the other end of the one-way torsion spring (204) is installed on the first support (201).

5. A measurement platform based on rail movement according to claim 1, characterized in that, An angle sensor for detecting the rotation angle of the shaft (205) is installed in the mounting base (210).

6. The measurement platform based on rail movement according to claim 1, characterized in that, The first support (201) is rotatably mounted with a first traveling wheel (202).

7. A measurement platform based on rail movement according to claim 1, characterized in that, The walking wheel assembly (3) includes a second support (301) mounted on the connecting beam (1), a second walking wheel (302) rotatably mounted on the second support (301), and a support column (305) fixedly connected to the inner side of the second support (301) to rotate with the second walking wheel (302).

8. A measurement platform based on rail movement according to claim 7, characterized in that, The second traveling wheel (302) has several fixing holes (304) circumferentially opened on the end face near the support column (305), and spring pins (303) that cooperate with the fixing holes (304) are installed on the support column (305).

9. A measurement platform based on rail movement according to claim 7, characterized in that, The lower end of the support column (305) is rotatably connected to a wheel (306).

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