A rail position measuring trolley

Abstract

The utility model discloses a rail position measurement trolley, including the trolley framework, the trolley framework top is equipped with the telescopic connecting sleeve, the trolley framework below is equipped with a pair of measuring wheel subassembly, and measuring wheel subassembly includes the mounting plate with trolley framework connection, the mounting plate is connected with movable horizontal shift axle, one end of horizontal shift axle is equipped with the outside connecting plate, and the other end is equipped with the inside connecting plate, and is installed with the measuring wheel between outside connecting plate and inside connecting plate, and a pair of measuring wheel opposite arrangement is equipped with displacement sensor below the trolley framework, and the elastic tensioning element is still equipped with on horizontal shift axle. This rail position measurement trolley is easy to install and use, can follow the main body equipment along the rail and moves, and the operating condition requirement is low, and the adaptability is strong, and moreover, the relative stability of measuring wheel and rail contact, the rim can closely adhere to the rail, and it is favorable to promote the moving stability and the measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of track construction technology, specifically to a rail position measuring trolley. Background Technology

[0002] Tamping equipment is a commonly used tool in railway construction. During tamping operations on railway lines, a surveying trolley is needed to measure the position of the rails. Existing surveying trolleys include specialized inspection trolleys for track inspection, but these are not suitable for use in conjunction with tamping equipment. Other surveying trolleys calculate rail positions through profile scanning; these offer high accuracy but require demanding operating conditions and are expensive. Still others use cylinders to support the measuring wheels, which are held against the rails in both lateral and longitudinal directions. This method requires an air source and relies on manual operation. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art by providing a rail position measuring trolley.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A rail position measuring trolley includes a trolley frame, a retractable connecting sleeve on the top of the trolley frame for connecting to a main body device, and a pair of measuring wheel assemblies on the bottom of the trolley frame. Each measuring wheel assembly includes a mounting plate connected to the trolley frame, a movable transverse axis connected to the mounting plate, an outer connecting plate at one end of the transverse axis and an inner connecting plate at the other end, and measuring wheels installed between the outer and inner connecting plates. The pair of measuring wheels are arranged opposite to each other. A displacement sensor is located on the bottom of the trolley frame. An elastic tensioning element is also provided on the transverse axis, connected between the mounting plate and the outer connecting plate or between the mounting plate and the inner connecting plate.

[0005] This rail position measuring trolley is easy to install and use, can move along the rail following the main equipment, has low requirements for operating conditions, and is highly adaptable. Furthermore, the contact between the measuring wheel and the rail is relatively stable, and the wheel flange can closely adhere to the rail, which helps improve movement stability and measurement accuracy. Under the action of the outer connecting plate, the inner connecting plate, and the elastic tensioning element, the measuring wheel can be relatively stably clamped onto the rail, allowing the wheel flange to form a lateral limit against the side of the rail. The tension force provided by the elastic tensioning element ensures contact between the measuring wheel and the rail without the need for an air source, improving its adaptability. Its structure is also simple and very convenient to use.

[0006] Furthermore, the transverse axis consists of two axes arranged side by side, and the height of the transverse axis does not exceed the height of the trolley frame.

[0007] Furthermore, the outer connecting plate is provided with a handle on its outer side, so as to pull the outer connecting plate to adjust the measuring wheel.

[0008] Furthermore, the inner connecting plate is a multi-segment bent plate, including an upper connecting edge and a lower connecting edge, and an intermediate connecting plate connecting the upper connecting edge and the lower connecting edge. The upper connecting edge is connected to the transverse axis, the lower connecting edge is connected to the measuring wheel, and the intermediate connecting plate is located below the transverse axis.

[0009] Furthermore, the outer side of the inner connecting plate is also provided with reinforcing ribs, which can increase strength and stability.

[0010] Furthermore, a sensor mounting base is provided at the lower center of the vehicle frame, which can be used to mount the displacement sensor.

[0011] Furthermore, the elastic tensioning element is one or more of the following: a transverse spring, a rubber elastic column, a metal spring sheet, and an elastic telescopic rod, which can be compressed to provide tension.

[0012] Furthermore, the connecting sleeve includes an outer sleeve and an inner sleeve fitted inside the outer sleeve. The outer sleeve and the inner sleeve are connected to a telescopic actuator via a connecting seat. A fixing position is provided above the outer sleeve for connecting the main body equipment. The trolley frame is connected below the inner sleeve.

[0013] Furthermore, a hanging plate seat assembly is connected below the inner sleeve. The hanging plate seat assembly includes a pair of hanging plates connected below the inner sleeve. Connecting ear plates are respectively provided on both sides of the trolley frame. One end of the hanging plate is connected to the inner sleeve through a hinge shaft, and the other end is slidably connected to the connecting ear plate through a guide shaft. A hanging seat is provided between the pair of hanging plates. The two ends of the hanging seat are respectively connected to the trolley frame through longitudinal springs.

[0014] Furthermore, the hanging plate is provided with a guide groove for connecting the guide shaft, and a limiting sleeve sleeved outside the longitudinal spring is also provided below the hanging base.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. The rail position measuring trolley has a simple structure, is easy to install and use, can follow the main equipment along the rail, has low requirements for working conditions, and is highly adaptable; moreover, the contact between the measuring wheel and the rail is relatively stable, and the wheel flange can closely adhere to the rail, which is conducive to improving the stability of movement and the accuracy of measurement; 2. The setting of the connecting sleeve facilitates the connection of the entire measuring trolley to the main equipment, and also allows adjustment of the height of the measuring trolley. In the non-measuring state, the trolley frame can be retracted to keep it away from the ground. During measurement, the trolley frame can be lowered so that the measuring wheel can rest on the rail, and provides a certain downward pressure during the measurement movement. 3. Under the action of the outer connecting plate, the inner connecting plate and the elastic tensioning element, the measuring wheel can be relatively stably clamped on the rail, so that the wheel flange of the measuring wheel can be attached to the side of the rail to form a lateral limit. The tensioning force provided by the elastic tensioning element allows the measuring wheel to contact the rail without the need for an air source, which improves its adaptability, and the structure is simple and very convenient to use; 4. The setting of the hanging plate assembly allows the hanging plate to move appropriately, so that the trolley frame can be tilted adaptively, allowing the pair of measuring wheels to adapt to the height difference of the rails on both sides of the track. This setting can further improve the flexibility and adaptability of this measuring trolley. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of a rail position measuring trolley according to the present invention; Figure 2 This is a three-dimensional structural diagram of a rail position measuring trolley according to the present invention; Figure 3 This is a top view schematic diagram of a rail position measuring trolley according to the present invention; Figure 4 This is a schematic diagram of another connection structure for the rail position measuring trolley of this utility model; In the diagram: 1. Carriage frame; 2. Connecting sleeve; 201. Outer sleeve; 202. Inner sleeve; 203. Telescopic actuator; 204. Fixing position; 3. Mounting plate; 4. Lateral axis; 5. Outer connecting plate; 6. Inner connecting plate; 601. Upper connecting edge; 602. Lower connecting edge; 603. Middle connecting plate; 604. Reinforcing rib; 7. Measuring wheel; 8. Elastic tensioning element; 9. Sensor mounting base; 10. Hanging plate; 11. Connecting ear plate; 12. Hinge shaft; 13. Guide shaft; 14. Guide groove; 15. Hanging seat; 16. Longitudinal spring; 17. Handle; 18. Auxiliary connecting plate. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.

[0019] Example 1

[0020] like Figures 1-3 As shown, a rail position measuring trolley includes a trolley frame 1, a retractable connecting sleeve 2 on the upper part of the trolley frame 1 for connecting to the main equipment, and a pair of measuring wheel assemblies below the trolley frame 1. The measuring wheel assembly includes a mounting plate 3 connected to the trolley frame 1, a movable transverse shaft 4 connected to the mounting plate 3, an outer connecting plate 5 at one end of the transverse shaft 4 and an inner connecting plate 6 at the other end, and a measuring wheel 7 installed between the outer connecting plate 5 and the inner connecting plate 6. The pair of measuring wheels 7 are arranged opposite to each other. A displacement sensor is provided below the trolley frame 1. An elastic tensioning element 8 is also provided on the transverse shaft 4, and the elastic tensioning element 8 is connected between the mounting plate 3 and the outer connecting plate 5 or between the mounting plate 3 and the inner connecting plate 6.

[0021] This rail position measuring trolley has a simple structure, is easy to install and use, can follow the main equipment along the rail, has low requirements for operating conditions, and is highly adaptable; moreover, the contact between the measuring wheel and the rail is relatively stable, and the wheel flange can closely adhere to the rail, which helps to improve the stability of movement and the accuracy of measurement.

[0022] The connecting sleeve 2 facilitates the connection of the entire measuring trolley to the main equipment (such as the frame of the tamping machine), and also allows for adjustment of the height of the measuring trolley. In non-measuring states (such as during transportation), the trolley frame 1 can be folded up to keep it away from the ground. During measurement, the trolley frame 1 can be lowered so that the measuring wheel 7 can land on the rail, and a certain downward pressure is provided during the measurement movement to ensure good contact between the measuring wheel and the rail.

[0023] During use, the pair of measuring wheel assemblies are respectively located on a pair of steel rails. Under the action of the measuring wheels 7, the trolley frame 1 can be straddled across the pair of steel rails and can move in real time with the measuring wheels 7. During movement, multiple displacement sensors under the trolley frame 1 can monitor the lateral and longitudinal distances of the pair of steel rails in real time, providing measurement points for the lateral and longitudinal positions of the rails, so that the main equipment can perform tamping operations. The longitudinal distance can be measured by displacement sensors mounted on the trolley frame or by displacement sensors mounted on the main equipment.

[0024] The mounting plate 3 is designed to accommodate a transverse axis 4 below the trolley frame 1. The transverse axis 4 can move appropriately relative to the mounting plate, thus adjusting the position of the measuring wheel 7. Under the action of the outer connecting plate 5, the inner connecting plate 6, and the elastic tensioning element 8, the measuring wheel 7 can be relatively stably clamped onto the rail, allowing the wheel flange of the measuring wheel 7 to be laterally limited against the side of the rail. The tensioning force provided by the elastic tensioning element 8 allows the measuring wheel to contact the rail without the need for an air source, improving its adaptability. The structure is also simple and very convenient to use.

[0025] In this embodiment, the transverse axis 4 on each side consists of two parallel axes, and the height of the transverse axis 4 does not exceed the height of the trolley frame 1. The central axis of the pair of transverse axis 4 is arranged in a triangular pattern with the central axis of the measuring wheel 7, which saves space and provides good stability.

[0026] Furthermore, the outer side of the outer connecting plate 5 is provided with a handle 17. The outer connecting plate 5 can be pushed and pulled through the handle 17 to operate the measuring wheel 7. It can also provide a certain preload to the elastic tensioning element to generate tension or pressure, so that the measuring wheel can abut against the rail without falling off.

[0027] In this embodiment, the elastic tensioning element 8 is a transverse spring. The transverse spring is sleeved on the outer periphery of the transverse shaft 4, and its two ends are respectively connected to the mounting plate 3 and the outer connecting plate 5. The rim of the measuring wheel 7 is located on the inner side. When a pair of measuring wheels 7 fall on the rail, the transverse spring is pre-compressed, always providing an outward force to the measuring wheel, ensuring that the rim of the measuring wheel running on the rail can be in contact with the rail.

[0028] If the rim of the measuring wheel is located on the outside, a reverse preload can be applied, or a transverse spring can be installed between the mounting plate and the inner connecting plate. In some embodiments, a hollow rubber elastic column can be used instead of the transverse spring. This hollow rubber elastic column is fitted over the transverse shaft, with its two ends connected to the mounting plate and the outer / inner connecting plate, respectively.

[0029] Furthermore, the inner connecting plate 6 is a multi-segment bent plate, including an upper connecting edge 601 and a lower connecting edge 602, and an intermediate connecting plate 603 connecting the upper connecting edge 601 and the lower connecting edge 602. The upper connecting edge 601 is connected to the transverse axis 4, the lower connecting edge 602 is connected to the measuring wheel 7, and the intermediate connecting plate 603 is located below the transverse axis 4.

[0030] The inner connecting plate 6 is configured as a multi-segment bent plate, which facilitates the connection of the transverse axis 4 and the measuring wheel 7 at different transverse positions. The orthographic projection of the upper connecting edge, the lower connecting edge and the middle connecting plate is basically the same as the orthographic projection of the outer connecting plate, that is, when viewed from the side of the trolley frame, the outlines of the two are basically overlapping.

[0031] Furthermore, the outer side of the inner connecting plate 6 is also provided with reinforcing ribs 604, which can enhance the strength and stability of the inner connecting plate 6.

[0032] Furthermore, a sensor mounting base 9 is provided at the lower center of the trolley frame 1, and a displacement sensor can be installed below the sensor mounting base 9.

[0033] Furthermore, the connecting sleeve 2 includes an outer sleeve 201 and an inner sleeve 202 sleeved inside the outer sleeve 201. The outer sleeve 201 and the inner sleeve 202 are connected to a telescopic actuator 203 via a connecting seat. A fixing position 204 is provided above the outer sleeve 201 for connecting the main body equipment. The inner sleeve 202 can be directly connected to the trolley frame 1 via a hanging plate below.

[0034] The telescopic actuator 203 can be an electric push rod or a hydraulic push rod, which can move the inner sleeve 202 relative to the outer sleeve 201 to extend or retract the inner sleeve 202, thereby lowering or raising the trolley frame 1, and can also apply downward pressure to the pair of measuring wheels 7.

[0035] Example 2

[0036] This embodiment provides another way to connect the inner sleeve to the trolley frame.

[0037] Specifically, in combination Figures 1-3As shown, a hanging plate seat assembly is also connected below the inner sleeve 202. The hanging plate seat assembly includes a pair of hanging plates 10 connected below the inner sleeve 202. Connecting ear plates 11 are respectively provided on both sides of the trolley frame 1. One end of the hanging plate 10 is connected to the inner sleeve 202 through a hinge shaft 12, and the other end is slidably connected to the connecting ear plate 11 through a guide shaft 13. A hanging seat 15 is provided between the pair of hanging plates 10. The two ends of the hanging seat 15 are respectively connected to the trolley frame 1 through longitudinal springs 16.

[0038] The hanging plate 10 is provided with a strip-shaped guide groove 14 for connecting the guide shaft 13, and a limiting sleeve sleeved on the longitudinal spring 16 is also provided below the hanging base 15. Spring connecting posts for connecting the longitudinal spring 16 are respectively provided below the hanging base 15 and above the trolley frame 1.

[0039] A pair of hanging plates 10 can be connected to the trolley frame 1 below. Since one end of the hanging plate 10 is hinged and the other end is slidably connected, the hanging plate 10 can move appropriately. In this way, the trolley frame 1 can swing adaptively to adapt to the height difference of the rails on both sides of the track. This setting can further improve the flexibility and adaptability of this measuring trolley.

[0040] The hanging base 15 is equipped with longitudinal springs 16 on both sides, pressing against the trolley frame 1. A guide shaft 13 is provided on the connecting ear plate 11 in the middle of the trolley frame 1. The guide shaft 13 passes through the guide groove 14 on the hanging plate 10. The trolley frame 1 can move up and down within a certain range along the guide groove 14. Before the telescopic actuator 203 reaches its maximum extension stroke, the measuring wheel 7 has already contacted the rail. When it continues to extend, it will compress the longitudinal springs 16 until the stroke ends. At this time, the guide shaft 13 is located in the middle position of the guide groove 14, with a margin both above and below. This margin should be greater than the longitudinal height difference of a pair of rails (in reality, a pair of rails may have a height difference, but the difference will not be very large). This allows the pair of measuring wheels to adaptively move on a pair of rails with a height difference.

[0041] The axial length of the limiting sleeve is less than the normal height distance between the hanging seat and the trolley frame. The inner diameter of the limiting sleeve is greater than the outer diameter of the longitudinal spring. It is positioned below the hanging seat to limit the movement of the hanging seat during its descent, preventing the hanging seat from descending excessively and hitting the trolley frame.

[0042] In other implementations, such as Figure 4 As shown, an auxiliary connecting plate 18 is also provided between the hanging plate 10 and the connecting ear plate 11. The auxiliary connecting plate 18 is also connected to the guide shaft 13. The upper end of the auxiliary connecting plate 18 will be connected to the components on the main equipment to form a connecting structure.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rail position measuring trolley, characterized in that, The device includes a trolley frame, with a retractable connecting sleeve at the top for connecting to the main body equipment. A pair of measuring wheel assemblies are located below the trolley frame. Each measuring wheel assembly includes a mounting plate connected to the trolley frame, with a movable transverse axis connected to the mounting plate. One end of the transverse axis has an outer connecting plate, and the other end has an inner connecting plate. Measuring wheels are installed between the outer and inner connecting plates, with the pair of measuring wheels arranged opposite to each other. A displacement sensor is located below the trolley frame. An elastic tensioning element is also provided on the transverse axis, connected between the mounting plate and the outer connecting plate or between the mounting plate and the inner connecting plate.

2. The rail position measuring trolley according to claim 1, characterized in that, The transverse axis consists of two parallel axes, and the height of the transverse axis does not exceed the height of the trolley frame.

3. The rail position measuring trolley according to claim 1, characterized in that, The inner connecting plate is a multi-segment bent plate, including an upper connecting edge and a lower connecting edge, and an intermediate connecting plate connecting the upper connecting edge and the lower connecting edge. The upper connecting edge is connected to the transverse axis, the lower connecting edge is connected to the measuring wheel, and the intermediate connecting plate is located below the transverse axis.

4. The rail position measuring trolley according to claim 1, characterized in that, The outer side of the outer connecting plate is provided with a handle, and the outer side of the inner connecting plate is also provided with reinforcing ribs.

5. The rail position measuring trolley according to claim 1, characterized in that, A sensor mounting base is provided in the lower center of the vehicle frame.

6. The rail position measuring trolley according to claim 1, characterized in that, The elastic tensioning element is one or more of the following: a transverse spring, a rubber elastic column, a metal spring sheet, and an elastic telescopic rod.

7. The rail position measuring trolley according to claim 1, characterized in that, The connecting sleeve includes an outer sleeve and an inner sleeve fitted inside the outer sleeve. The outer sleeve and the inner sleeve are connected to a telescopic actuator via a connecting seat. A fixing position is provided above the outer sleeve for connecting the main body equipment. The trolley frame is connected below the inner sleeve.

8. The rail position measuring trolley according to claim 7, characterized in that, A hanging plate seat assembly is also connected below the inner sleeve. The hanging plate seat assembly includes a pair of hanging plates connected below the inner sleeve. Connecting ear plates are respectively provided on both sides of the trolley frame. One end of the hanging plate is connected to the inner sleeve through a hinge shaft, and the other end is slidably connected to the connecting ear plate through a guide shaft. A hanging seat is provided between the pair of hanging plates. The two ends of the hanging seat are respectively connected to the trolley frame through longitudinal springs.

9. The rail position measuring trolley according to claim 8, characterized in that, The hanging plate is provided with a guide groove for connecting the guide shaft, and a limiting sleeve is provided below the hanging base and sleeved on the longitudinal spring.

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