Positioning device for track engineering driving boundary scanning

Abstract

The utility model discloses a positioning device for track engineering driving boundary scanning, which comprises side rods, a cross rod, a positioning rod, two fixing plates and a prism, the two fixing plates are arranged on the left side and the right side of a track, each fixing plate is provided with the side rod, the cross rod and the side rods are connected to form a door-shaped structure, and the prism is arranged on the cross rod. The number of the positioning rods is multiple, and the multiple positioning rods are symmetrically installed on the door-shaped structure. The positioning rod comprises a connecting rod and a supporting part, the supporting part is of an L-shaped structure, the end, in the length direction, of the connecting rod is connected with the supporting part, the prism is installed on the supporting part, and the end, away from the supporting part, of the connecting rod is connected with the side rod or the transverse rod. According to the utility model, the coordinates of the starting position and the ending position of the track to be detected are respectively acquired through the total station and the laser scanner, the standard data and the data to be verified are respectively obtained, the data are compared, the availability of the data acquired by the laser scanner is determined, and the accuracy of the driving limit data of the track to be detected is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of urban rail engineering, in particular to a positioning device used for scanning driving limits of rail engineering. Background Art

[0002] In railway and urban rail projects, after track construction is completed or before a train trial run, it is necessary to measure the driving clearance along the line to check whether there are any intruding structures or objects within the clearance. Usually, a three-dimensional laser scanner is fixed horizontally and installed on a track inspection cart for use. The track inspection cart equipped with a laser scanner can be pushed on the track and continuously collect cross-sectional point cloud information. However, the structure of the track inspection cart may produce errors due to vibration during transportation and improper installation of the equipment, and the resulting driving clearance scanning data will have large errors. Utility Model Content

[0003] The purpose of the present utility model is to overcome the deficiencies in the above-mentioned prior art and provide a positioning device for scanning the driving limit of a track project, wherein a total station collects the prism coordinates on the side bars and cross bars at the starting position and the ending position of the track to be detected and obtains standard data, a laser scanner collects the coordinate data of the positioning bars at the starting position and the ending position and obtains the data to be verified, the standard data and the data to be verified are compared, the data error collected by the laser scanner is determined, and then the usability of the data collected by the laser scanner is determined, thereby improving the accuracy of the driving limit data of the track to be detected.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a positioning device for scanning the driving limit of a track engineering vehicle, comprising a side rod, a cross rod, a positioning rod, a fixed plate and a prism, wherein the number of the fixed plates is two, and the two fixed plates are installed on the left and right sides along the length direction of the track, and the connecting line of the two fixed plates is perpendicular to the track, and each of the fixed plates is installed with a side rod, and the side rod is perpendicular to the fixed plate, and the two end portions of the cross rod along the length direction are respectively fixedly connected to the top of the opposite side rods to form a door-shaped structure, and the number of the positioning rods is multiple, and the multiple positioning rods are symmetrically installed on the door-shaped structure; the positioning rod comprises a connecting rod and a support part, and the support part is an L-shaped structure, and the end of the connecting rod along the length direction is connected to the vertical end of the support part, and the connecting rod has an angle with the horizontal direction, and the support part is installed with a prism, and the end of the connecting rod away from the support part is connected to the side rod or the cross rod.

[0005] Preferably, a reinforcing rod is provided near the top of the side rod, and both ends of the reinforcing rod are respectively connected to the side rod and the cross rod to improve the stability of the connection between the side rod and the cross rod.

[0006] Preferably, a reinforcing plate is provided at the connection between the side rods and the fixing plate, the side walls of the reinforcing plate are connected to the side rods, and the bottom of the reinforcing plate is connected to the fixing plate.

[0007] Preferably, there are two positioning rods on the cross bar, and the distance between the two positioning rods and the center of the cross bar is the same, and both are 400 mm.

[0008] Preferably, there are two positioning rods on the side rod, and the two positioning rods are arranged on the side of the side rod close to the track. The two positioning rods are spaced apart along the height direction of the side rod, and the distance between the two positioning rods is 400 mm. The positioning rod close to the fixed plate is 900 mm away from the fixed plate.

[0009] Preferably, the positioning device also includes a total station.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The total station of the present invention collects the prism coordinates on the side bars and cross bars at the starting and ending positions of the track to be inspected and obtains standard data. The laser scanner collects the coordinate data of the positioning bars at the starting and ending positions and obtains the data to be verified. The standard data and the data to be verified are compared to determine the data error collected by the laser scanner, and then determine the usability of the data collected by the laser scanner, thereby improving the accuracy of the driving limit data of the track to be inspected.

[0012] 2. The crossbar and sidebars of the present invention form a door-shaped bracket supported on the track, and the positioning rods are installed on the crossbar and sidebars, respectively located on the left, right and upper sides of the track, to facilitate the collection of coordinate data at multiple angles of the track.

[0013] 3. The positioning device of the utility model is used to verify the availability of laser scanner data. It has a simple structure, is easy to operate, and is easy to promote widely.

[0014] 4. This utility model adopts two measurement methods and different calculation methods as a supplement to measurement review, which can effectively avoid the problem of scanning data errors caused by equipment problems or other external factors.

[0015] The present invention will be described in further detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the positional relationship between the positioning rod and the prism of the utility model;

[0018] Figure 3This is a schematic diagram of the positional relationship between the fixing plate and the side rods of the present invention.

[0019] Description of the accompanying drawings:

[0020] 1—side bar; 2—cross bar; 3—positioning bar;

[0021] 4—Reinforcement rod; 5—Fixed plate; 6—Prism;

[0022] 7—Reinforcement plate; 8—Connecting rod; 9—Supporting part;

[0023] 10—Threaded hole. DETAILED DESCRIPTION

[0024] like Figures 1 to 3 As shown, the utility model discloses a positioning device for scanning the driving limit of a track engineering, including a side rod 1, a cross rod 2, a positioning rod 3, a fixing plate 5 and a prism 6. There are two fixing plates 5, and the two fixing plates 5 are installed on the left and right sides along the length direction of the track. The connecting line of the two fixing plates 5 is perpendicular to the track. Each fixing plate 5 is installed with a side rod 1, and the side rod 1 is perpendicular to the fixing plate 5. The two end portions of the cross rod 2 along the length direction are respectively fixedly connected to the top of the opposite side rod 1 to form a door-shaped structure. There are multiple positioning rods 3, and multiple positioning rods 3 are symmetrically installed on the door-shaped structure; the positioning rod 3 includes a connecting rod 8 and a supporting part 9, and the supporting part 9 is an L-shaped structure. The end of the connecting rod 8 along the length direction is connected to the vertical end of the supporting part 9, and the connecting rod 8 has an angle with the horizontal direction. The prism 6 is installed on the supporting part 9, and the end of the connecting rod 8 away from the support part 9 is connected to the side rod 1 or the cross rod 2.

[0025] In this embodiment, the fixing plate 5 is a square plate. Two threaded holes 10 are provided on the central axis of the fixing plate 5. The two threaded holes 10 are respectively located on the left and right sides of the center of the fixing plate 5. The ends of the side rods 1 along the length direction are fixedly connected to the center of the fixing plate 5. A cross bar 2 is installed between the ends of the two side rods 1 away from the fixing plate 5. The cross bar 2 is perpendicular to the side rods 1. The two end ends of the cross bar 2 are respectively fixedly connected to the side rods 1 located on its left and right sides. The positioning rods 3 are symmetrically installed at the bottom of the cross bar 2, and the positioning rods 3 are installed on the side facing each other of the two side rods 1. The positioning rods 3 on the two side rods 1 are symmetrical, and a prism 6 is installed on each positioning rod 3. Then the fixing plate 5 is fixed to the track bed by bolts. The line connecting the center points of the two fixing plates 5 is perpendicular to the length direction of the track to ensure that the positioning device is perpendicular to the track. The two side rods 1 are respectively located on the left and right sides of the track along the length direction.

[0026] One end of the connecting rod 8 along the length direction is fixedly connected to the vertical end of the support part 9, the lateral end of the support part 9 is horizontal, and the lateral end is located on the side away from the connecting rod 8, the end of the connecting rod 8 of the two positioning rods 3 on the cross bar 2 away from the support part 9 is fixedly connected to the cross bar 2, and the vertical end of the support part 9 remains horizontal, and the lateral end of the support part 9 remains vertical. The prism 6 is installed on the support part 9, and the two connecting rods 8 on the cross bar 2 are arranged in an eight-shape; the connecting rod 8 of the two positioning rods 3 on the side bar 1 away from the support part 9 is fixedly connected to the side bar 1, and the vertical end of the support part 9 remains vertical, and the lateral end of the support part 9 remains horizontal. The prism 6 is installed on the support part 9, and there is an angle between the connecting rod 8 on the side bar 1 and the side bar 1; the prisms 6 on the two facing side bars 1 are symmetrically positioned, which is convenient for the total station to collect coordinate data of the prisms 6 on the left and right sides and the top of the track.

[0027] In another possible embodiment, the side rod 1 and the connecting rod 8 are both square tubes, and a mounting hole is provided on the side rod 1. The size of the mounting hole matches the size of the end of the connecting rod 8 away from the support portion 9, and the number of the mounting holes matches the number of the connecting rods 8. Mounting holes are provided on the opposite side walls of the side rods 1. There are two mounting holes on each side rod 1. The mounting hole close to the fixing plate 5 is 900 mm away from the fixing plate 5. The two mounting holes on the side rod 1 are 400 mm apart. The mounting holes have an angle with the horizontal direction. The side walls of the mounting holes are provided with connecting through holes. The end of the connecting rod 8 away from the support plate 9 is provided with a hole with the same diameter as the connecting through hole. When in use, the connecting rod 8 is inserted into the mounting hole. Then insert the connecting rod into the connecting through hole and the hole at the end of the connecting rod 8. The two end portions of the connecting rod are located on the outside of the connecting through hole, so that the connecting rod 8 is fastened in the mounting hole. After the connecting rod 8 is fastened to the mounting hole, the vertical end of the support part 9 remains vertical and the horizontal end remains horizontal. Similarly, mounting holes are also provided on the cross bar 2. The two mounting holes on the cross bar 2 are located on both sides of the center of the cross bar 2, and the distance from the two mounting holes on the cross bar 2 to the center of the cross bar 2 is 400mm. After the connecting rod 8 is fastened to the mounting hole on the cross bar 2, the vertical end of the support part 9 remains horizontal and the horizontal end remains vertical. The positioning rod 3 is detachably installed on the side bar 1 and the cross bar 2, which can extend the service life of the positioning rod 3.

[0028] During operation, the positioning device of the present application is used in conjunction with a laser scanner, and positioning devices are installed at the starting position and the ending position of the track to be detected, so that the total station can collect the coordinates of the prism 6 on the positioning rod 3 at the starting position and the ending position to obtain the coordinates of the positioning rod 3, and then the distance from the track surface to the positioning rod 3 and the distance from the center line of the track to the positioning rod 3 can be calculated through the coordinates as standard data; the laser scanner starts to collect coordinates from the starting position to the ending position, and the laser scanner scans the positioning rod 3 at the starting position and the ending position, and calculates the distance between the positioning rod 3 and the track surface and the distance between the positioning rod 3 and the center line of the track as data to be verified; the standard data is compared with the data to be verified to determine whether the error of the data collected by the laser scanner is within the preset error, thereby determining whether the data collected by the laser scanner is usable.

[0029] A reinforcing rod 4 is provided near the top of the side rod 1 , and both ends of the reinforcing rod 4 are respectively connected to the side rod 1 and the cross rod 2 to improve the stability of the connection between the side rod 1 and the cross rod 2 .

[0030] In this embodiment, the reinforcing rod 4 is a square rod, a connecting piece is provided near the top of the side rod 1, and connecting pieces are provided at both ends of the cross rod 2 near the side rod 1. The ends of the reinforcing rod 4 along the length direction are respectively connected to the connecting pieces on the side rod 1 and the connecting pieces on the cross rod 2 by screw threads.

[0031] In another possible embodiment, the reinforcing rod 4 is a right-angled triangle structure, and a reinforcing rod 4 is provided at the connection between the side rod 1 and the cross rod 2. The two right-angled sides of the reinforcing rod 4 overlap with the side rod 1 and the cross rod 2 respectively, and the two right-angled sides of the reinforcing rod 4 are threadedly connected to the side rod 1 and the cross rod 2 by screws respectively, thereby improving the stability of the connection between the side rod 1 and the cross rod 2.

[0032] A reinforcing plate 7 is provided at the connection between the side rod 1 and the fixing plate 5 . The side wall of the reinforcing plate 7 is connected to the side rod 1 , and the bottom of the reinforcing plate 7 is connected to the fixing plate 5 .

[0033] In this embodiment, in order to improve the connection strength between the side rod 1 and the fixed plate 5, a reinforcing plate 7 is further provided on both sides of the side rod 1. The reinforcing plate 7 is perpendicular to the line connecting the two threaded holes 10. The side wall of the reinforcing plate 7 is connected to the side rod 1, and the bottom of the reinforcing plate 7 is connected to the fixed plate 5. The reinforcing plates 7 on both sides of the side rod 1 jointly improve the connection strength between the side rod 1 and the fixed plate 5.

[0034] There are two positioning rods 3 on the crossbar 2 , and the distance between the two positioning rods 3 and the center of the crossbar 2 is the same, that is, 400 mm.

[0035] In this embodiment, two positioning rods 3 are provided on the crossbar 2. The distance between the two positioning rods 3 and the center of the crossbar 2 is 400 mm. That is, the distribution of the positioning rods 3 is relatively uniform, so the data of the available angles of the laser scanner can be uniformly detected.

[0036] In another possible embodiment, the cross bar 2 is a telescopic rod, and the cross bar 2 includes an outer cross bar and an inner cross bar. The inner cross bar can move left and right along the outer cross bar. The number of first snap buckles provided on the inner cross bar is at least two, and the first snap buckles are arranged at intervals along the length direction of the inner cross bar. The side wall of the outer cross bar is provided with multiple first snap holes at intervals along its length direction. The size of the first snap holes matches the first snap buckles, which is convenient for the first snap buckles of the inner cross bar to be snapped into the first snap holes of the outer cross bar, so that the length of the cross bar 2 is fixed. If the length of the cross bar 2 needs to be adjusted, the inner cross bar is moved inward or outward along the length direction of the outer cross bar to the target position, so that at least two first snap buckles are respectively snapped into the corresponding first snap holes, and the length adjustment of the cross bar 2 is completed. At the same time, the distance between the two positioning rods 3 on the cross bar 2 changes, and the position coordinates of the positioning rod 3 on the upper part of the track are changed. The coordinates of the current positioning rod 3 are collected by the total station, so as to achieve the purpose of collecting multiple coordinates, thereby improving the positioning accuracy of the positioning device.

[0037] There are two positioning rods 3 on the side rod 1. The two positioning rods 3 are arranged on the side of the side rod 1 close to the track. The two positioning rods 3 are spaced apart along the height direction of the side rod 1. The distance between the two positioning rods 3 is 400 mm. The positioning rod 3 close to the fixed plate 5 is 900 mm away from the fixed plate 5.

[0038] In this embodiment, the positioning rod 3 is arranged on the side of the side rod 1 close to the track to facilitate the collection of the coordinates of the prism 6 on the positioning rod 3 by the total station. The positioning rods 3 on the two side rods 1 are symmetrically arranged. The two side rods 1 are respectively located on the left and right sides of the track, and the cross bar 2 is located on the upper part of the track. Positioning rods 3 are provided on the side rod 1 and the cross bar 2, and each positioning rod 3 is provided with a prism 6. The multiple positioning rods 3 on the side rod 1 and the cross bar 2 cover multiple angles on the upper side, left side and right side of the track, and the collected data angles are uniform and complete, which improves the reliability of verifying whether the total station data is consistent with the laser scanner data.

[0039] In another possible embodiment, the side rod 1 is a telescopic rod, the upper part of the side rod 1 is the outer rod, and the lower part of the side rod 1 is the inner rod. The inner rod can slide up and down along the outer rod to adjust the height of the side rod 1. The number of second snap buckles provided on the inner rod is at least two, and the second snap buckles are arranged at intervals along the height direction of the inner rod. The side wall of the outer rod is provided with a plurality of second snap holes at intervals along its length direction. The size of the second snap hole matches the second snap buckle, so that the second snap buckle of the inner rod is snapped into the second snap hole of the outer rod to fix the height of the side rod 1. If the height of the side rod needs to be adjusted, the outer rod is moved upward or downward along its length direction to the target position, so that at least two second snap-fit ​​buckles of the inner rod are respectively snapped into the corresponding second snap-fit ​​holes, and the height adjustment of the side rod 1 is completed. By adjusting the height of the side rod 1, the spacing between the two positioning rods 3 is also adjusted, but the distance between the positioning rod 3 close to the fixed plate 5 and the fixed plate 5 remains unchanged; by adjusting the height of the side rod 1, the positioning device can achieve the purpose of locating multiple coordinates, and the multiple coordinates are collected by the total station, thereby improving the accuracy of coordinate collection by the positioning device.

[0040] Positioning devices also include total stations.

[0041] When in use, the positioning device is installed at the starting position and the ending position of the track to be measured, and the total station is installed at the preset position, which is the position of the total station collection point calculated in advance. The total station collects the coordinate data of the prism 6 at the starting position and the ending position and the coordinates of the center point of the top of the rail respectively. The coordinates of the center point of the top of the rail collected here are convenient for determining the actual position of the rail, because the laser scanner is pushed on the rail; after the collection is completed, a three-dimensional laser scanner is installed on the track detection trolley, and the track detection trolley drives the three-dimensional laser scanner to pass through the positioning device to start detection. The three-dimensional laser scanner continues to collect coordinates along the track to be measured until the three-dimensional laser scanner passes through The positioning device at the end position is used to collect the coordinate data of the positioning rod 3 on the cross bar 2 and the side bar 1, and then the distance from the rail surface to the positioning rod 3 and the distance from the track center line to the positioning rod 3 are calculated based on the coordinates collected by the total station; the distance between the positioning rod 3 and the rail surface and the distance between the positioning rod 3 and the track center line are calculated by comparing the coordinates of the positioning rod 3 at the starting position and the ending position collected by the laser scanner, and verifying whether the collection error of the three-dimensional laser scanner is within the preset error range, thereby determining whether the collection data of this three-dimensional laser scanner is usable, thereby improving the accuracy of the track driving limit data to be detected. The device has a simple structure, is easy to operate, and is convenient for wide promotion.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A positioning device for scanning vehicle limits in track engineering, characterized by: The invention comprises a side bar (1), a cross bar (2), a positioning bar (3), a fixing plate (5) and a prism (6), wherein the number of the fixing plates (5) is two, and the two fixing plates (5) are installed on the left and right sides along the length direction of the track, and the connection line of the two fixing plates (5) is perpendicular to the track, and each fixing plate (5) is installed with a side bar (1), and the side bar (1) is perpendicular to the fixing plate (5), and the ends of the cross bar (2) along the length direction are respectively fixedly connected to the top of the opposite side bar (1) to form a door-shaped structure, and the number of the positioning bars (3) is There are multiple positioning rods (3) symmetrically installed on the door-shaped structure, and each positioning rod (3) is installed with a prism (6); the positioning rod (3) includes a connecting rod (8) and a supporting portion (9), the supporting portion (9) is an L-shaped structure, the end of the connecting rod (8) along the length direction is connected to the vertical end of the supporting portion (9), the connecting rod (8) has an angle with the horizontal direction, the supporting portion (9) is installed with a prism (6), and the end of the connecting rod (8) away from the supporting portion (9) is connected to the side rod (1) or the cross rod (2).

2. A positioning device for scanning vehicle limits in track engineering according to claim 1, characterized in that: The side bar (1) is provided with a reinforcing bar (4) near the top, and the two ends of the reinforcing bar (4) are respectively connected to the side bar (1) and the cross bar (2) to improve the stability of the connection between the side bar (1) and the cross bar (2).

3. A positioning device for scanning vehicle limits in track engineering according to claim 1, characterized in that: A reinforcing plate (7) is provided at the connection between the side rod (1) and the fixed plate (5); the side wall of the reinforcing plate (7) is connected to the side rod (1); and the bottom of the reinforcing plate (7) is connected to the fixed plate (5).

4. A positioning device for scanning vehicle limits in track engineering according to claim 1, characterized in that: There are two positioning rods (3) on the crossbar (2), and the distances between the two positioning rods (3) and the center of the crossbar (2) are the same, both being 400 mm.

5. A positioning device for scanning vehicle limits in track engineering according to claim 1, characterized in that: There are two positioning rods (3) on the side rod (1). The two positioning rods (3) are arranged on the side of the side rod (1) close to the track. The two positioning rods (3) are spaced apart along the height direction of the side rod (1). The distance between the two positioning rods (3) is 400 mm. The positioning rod (3) close to the fixing plate (5) is 900 mm away from the fixing plate (5).

6. A positioning device for scanning vehicle limits in track engineering according to claim 1, characterized in that: The positioning device also includes a total station.

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