Portable prism track geometry measuring instrument

Abstract

The utility model discloses a portable prism track geometry state measuring instrument, which belongs to the technical field of railway and subway track measurement. The portable prism track geometry state measuring instrument includes a crossbeam, a fixed end roller, a movable end roller, a movable end gauge roller, a fixed end prism mounting hole, a movable end prism mounting hole, a prism mounting hole in the middle of the crossbeam, a handle and other components. The handle is pushed, and the fixed end roller and the movable end roller are used to drive the portable prism track geometry state measuring instrument to move on the track. According to the measured three-dimensional coordinates of the center of the fixed end prism and the three-dimensional coordinates of the center of the movable end prism, the measurement accuracy can be corrected, and the actual track gauge, superelevation, lateral deviation, and elevation deviation of the track can be calculated inversely, avoiding the use of track gauge sensors and superelevation sensors, greatly reducing the volume and weight of the measuring instrument, facilitating personnel to carry it, and greatly reducing the labor intensity of personnel.

Description

Technical Field

[0001] The present application relates to the technical field of railway and subway track measurement, and in particular to a portable prism track geometry state measuring instrument. Background Art

[0002] During the construction and subsequent operation and maintenance of railway and subway tracks, the track center position, track gauge, superelevation, etc. should be measured to detect the geometric state of the track and ensure the smoothness of the track.

[0003] The existing track geometry measuring instruments have the disadvantages of being large in size, heavy in weight, and requiring the cooperation of multiple people to be moved to the site for measurement, which restricts the work efficiency on site and increases the labor intensity of personnel. Therefore, it is very necessary to design a portable prism track geometry measuring instrument that can be carried by an ordinary adult in one hand to reduce the labor intensity of personnel. Utility Model Content

[0004] The utility model provides a portable prism track geometry state measuring instrument, which can be carried by an ordinary person with one hand, so as to achieve the purpose of reducing the labor intensity of personnel and improving the measuring work efficiency, and strictly ensure the measuring accuracy.

[0005] In order to achieve the above purpose, the utility model technology provides the following technical solutions:

[0006] A portable triangular prism track geometry state measuring instrument comprises a crossbeam, a fixed end running roller, a movable end running roller, a movable end track gauge roller, a fixed end prism mounting hole, a movable end prism mounting hole, a prism mounting hole in the middle of the crossbeam, a sliding rod, a sliding rod compression spring, a connecting handle, and a handle. When the handle is pushed, the fixed end running roller and the movable end running roller run on the track, and the movable end track gauge roller is extended and retracted left and right in real time by the expansion and contraction force of the sliding rod compression spring to ensure that the distance between the center of the movable end prism and the inner side of the rail (track gauge measurement point) is equal. After the roller is stationary, the three-dimensional coordinates of the center of the fixed end prism and the center of the movable end prism are measured and obtained.

[0007] According to the three-dimensional coordinates of the fixed end prism center and the three-dimensional coordinates of the movable end prism center, the three-dimensional space distance D between the two prism centers is calculated. 实测 , height difference △H 实测 .

[0008] When the track gauge is the standard track gauge (1.435m), the corresponding three-dimensional space design distance between the fixed end prism center and the movable end prism center is D. The three-dimensional space distance between the two prism centers calculated from actual measurement is D 实测 , then the actual track gauge = 1.435 + (D 实测 -D), avoiding the use of gauge sensors to measure the actual gauge and reducing the weight of the track geometry measuring instrument.

[0009] The actual superelevation of the track can be calculated based on the height difference between the centers of the two prisms obtained by reverse calculation, thus avoiding the use of superelevation sensors to measure the actual superelevation, further reducing the weight of the track geometry measuring instrument and greatly reducing the volume of the track geometry measuring instrument.

[0010] In order to ensure the measurement accuracy of the portable prism track geometry measuring instrument, calibration work is carried out before use. First, check whether the beam area where the fixed-end prism hole is located is deformed, that is, measure the three-dimensional coordinates of the fixed-end prism center and the three-dimensional coordinates of the prism center in the middle of the beam, and reversely calculate the difference between the spatial distance between the two prism centers and the designed distance to determine whether the difference meets the requirements. After the difference meets the requirements, perform the measured track gauge and measured superelevation correction.

[0011] Furthermore, the measured track gauge and superelevation are corrected. The track gauge and superelevation at a certain point on the track are measured using a qualified electronic track gauge, and the track gauge and superelevation at this point are measured using a portable prism track geometry measuring instrument. Based on the difference in track gauge and superelevation between the two measurements, the track gauge and superelevation measured by the portable prism track geometry measuring instrument are corrected in the measuring software to ensure measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model in a top view;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model in a side view;

[0014] Figure 3 It is a structural schematic diagram of the sliding rod, compression spring and sliding handle of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the sliding handle and the movable end gauge roller of the utility model.

[0016] In the figure: 1. beam; 2. roller groove at fixed end; 3. travel roller at fixed end; 4. roller groove at movable end; 5. travel roller at movable end; 6. gauge roller at movable end; 7. prism mounting hole at fixed end; 8. prism mounting hole at movable end; 9. prism mounting hole in the middle of beam; 10. sliding rod; 11. sliding rod compression spring; 12. sliding handle; 13. handle; 14. prism at fixed end; 15. prism in the middle of beam; 16. prism at movable end. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the embodiments:

[0018] The utility model provides a portable prism track geometry state measuring instrument, comprising a crossbeam, a fixed end roller groove and a movable end roller groove are installed on the crossbeam, two sliding rods are respectively installed on both sides of the crossbeam, a handle is installed on the crossbeam, and a fixed end prism mounting hole and a prism mounting hole in the middle of the crossbeam are both opened on the crossbeam to install the prism.

[0019] The fixed end walking roller is installed on the fixed end roller groove, and the movable end walking roller is installed on the movable end roller groove, so as to ensure that the portable prism track geometry state measuring instrument can walk along the track.

[0020] The sliding rod compression spring is installed on the sliding rod, the sliding handle is installed on the sliding rod, the movable end gauge roller is installed on the sliding handle, and a prism mounting hole, i.e., the movable end prism mounting hole, is arranged above the sliding handle to install the prism, thereby ensuring that the portable prism track geometry state measuring instrument is extended and retracted according to the actual gauge change during the movement, thereby ensuring that the distance between the center of the movable end prism and the inner side of the rail (gauge measurement point) is equal, thereby ensuring the accuracy of the gauge measurement.

[0021] The working principle of the portable prism track geometry state measuring instrument is described in detail below.

[0022] Place the fixed end roller of the portable prism track geometry measuring instrument on one rail, move the sliding handle toward the center of the rail, place the movable end roller on the other rail, release the sliding handle, and complete the placement of the portable prism track geometry measuring instrument on the rail.

[0023] The three-dimensional coordinates of the center of the fixed-end prism and the center of the prism in the middle of the beam are measured, and the three-dimensional spatial distance between the two prism centers is calculated inversely. The distance is compared with the designed distance between the two prism centers to detect whether the area of ​​the beam where the fixed-end prism hole is located is deformed.

[0024] Measure the three-dimensional coordinates of the center of the fixed-end prism and the three-dimensional coordinates of the center of the movable-end prism, and reversely calculate the track gauge and superelevation at this point based on the three-dimensional coordinates of the centers of the two prisms and the geometric relationship between the portable prism track geometry measuring instrument and the track; use a qualified electronic track ruler to actually measure the track gauge and superelevation at this point; compare the reversely calculated track gauge and superelevation with the track gauge and superelevation actually measured by the electronic track ruler to form a difference in track gauge and superelevation, and based on the difference, correct the track gauge and superelevation actually measured by the portable prism track geometry measuring instrument in the measuring software to complete the calibration of the portable prism track geometry measuring instrument.

[0025] Push the handle to slide the portable prism track geometry measuring instrument to the measuring position, measure the three-dimensional coordinates of the fixed end prism center and the movable end prism center, and calculate the actual track gauge, superelevation, lateral and elevation deviation of the left rail, lateral and elevation deviation of the right rail, and lateral and elevation deviation of the track center according to the designed line centerline to complete the measurement; push the handle to the next track measurement position, and repeat this process until all measurement work is completed.

[0026] The present utility model is not limited by the above-mentioned methods. Any other changes or substitutions that do not deviate from the spirit and principle of the present utility model should be deemed to fall within the scope of patent protection determined by the claims submitted for the present utility model.

Claims

1. A portable prism track geometry state measuring instrument, comprising a crossbeam, a fixed end roller groove, a fixed end travel roller, a movable end roller groove, a movable end travel roller, a movable end track gauge roller, a fixed end prism mounting hole, a movable end prism mounting hole, a prism mounting hole in the middle of the crossbeam, a sliding rod, a sliding rod compression spring, a sliding handle, and a handle; the fixed end roller groove and the movable end roller groove are installed on the crossbeam, two sliding rods are respectively installed on both sides of the crossbeam, the handle is installed on the crossbeam, the fixed end prism mounting hole and the prism mounting hole in the middle of the crossbeam are holes opened on the crossbeam to install the prism, the fixed end travel roller is installed on the fixed end roller groove, the movable end travel roller is installed on the movable end roller groove, the sliding rod compression spring is installed on the sliding rod, the sliding handle is installed on the sliding rod, the movable end track gauge roller is installed on the sliding handle, and a prism mounting hole, i.e., the movable end prism mounting hole, is arranged above the sliding handle to install the prism.

2. A portable prism track geometry measuring instrument according to claim 1, characterized in that The slide handle can be moved toward the center of the track direction without using a gauge sensor or a superelevation sensor.

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