Calibration device for high-low orbit gyroscope of orbit inspection tester

Abstract

The utility model provides a track inspection tester's high and low orbit gyroscope calibration device, including orthogonality support, gyroscope frame subassembly, verification platform and calibration frame, orthogonality support includes first mounting surface and second mounting surface, the calibration frame includes underframe subassembly and fixed on the first locating pin subassembly on the base subassembly, and the first locating pin subassembly is fixed on the second locating pin subassembly on the second mounting surface. A first datum plate and a second datum plate which are orthogonal to each other are arranged on the bottom frame assembly, the first datum plate comprises a horizontal datum plane on one side, the second datum plate comprises a vertical datum plane on one side, a locking assembly is further arranged on the bottom frame assembly, and a second positioning pin assembly matched with the first positioning pin assembly is arranged on the gyroscope rack assembly. And a fixing mechanism is arranged on the verification platform. According to the utility model, the calibration frame is designed, so that after the gyroscope rack assembly is mounted on the calibration frame, the first mounting surface and the second mounting surface on the orthogonal bracket are respectively parallel to the horizontal reference surface and the vertical reference surface, and then the calibration frame can be directly mounted on a calibration table for next calibration.

Description

Technical Field

[0001] This utility model relates to the field of track inspection instrument technology, and in particular to a calibration device for the high and low track gyroscope of a track inspection instrument. Background Technology

[0002] Railway track inspection instruments (track inspection machines) are used to measure the static geometric parameters of tracks. They typically employ two inertial sensors to continuously measure track smoothness, with the gyroscope being the core component of the sensor. The two gyroscopes measure the track's orientation and elevation respectively. The gyroscopes are mounted on the track inspection machine using a fixing device, and precise adjustments are made to ensure parallelism with both the transverse and longitudinal surfaces of the rails. After adjustment, calibration is performed. The installation of the gyroscopes requires high geometrical accuracy, as this directly affects the overall measurement accuracy of the track inspection machine.

[0003] Two gyroscopes are typically pre-mounted on a gyroscope frame assembly, which is then installed onto the track inspection instrument. Calibration is primarily performed on the railway track inspection instrument calibration bench (calibration table). An auxiliary positioning fixture (calibration frame) is used to position and fix the device assembly containing the gyroscopes, and the gyroscopes are calibrated sequentially according to the calibration procedures. Existing gyroscope calibration methods have the following shortcomings:

[0004] 1. Due to the structural characteristics of the calibration stand, when calibrating gyroscopes in sequence, the gyroscope frame assembly needs to be removed from the calibration stand, rotated 90°, and then reinstalled and fixed, resulting in low efficiency of secondary clamping.

[0005] 2. The reference surface for the gyroscope assembly and calibration frame is usually on the outer surface of the assembly and is not the same as the gyroscope mounting reference surface. The calibration reference surface has changed, resulting in a reference positioning error. This cannot guarantee that the gyroscope state under calibration is consistent with the state under actual testing. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a calibration device for the high and low trajectory gyroscope of a track inspection instrument, which aims to solve the technical problems described in the background art above.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A calibration device for a high-low trajectory gyroscope of a track inspection instrument includes an orthogonal support, a trajectory gyroscope, a high-low trajectory gyroscope, a gyroscope frame assembly, and a calibration table. The orthogonal support has a first mounting surface and a second mounting surface for mounting the high-low trajectory gyroscope and the trajectory gyroscope. The calibration device for the high-low trajectory gyroscope of the track inspection instrument further includes a calibration frame for supporting and fixing the gyroscope frame assembly. The calibration frame includes a base frame assembly, on which a first positioning pin assembly for supporting the gyroscope frame assembly is provided. The base frame assembly is located away from the first positioning pin assembly. A first reference plate and a second reference plate, which are orthogonal to each other, are provided on one side. The first reference plate includes a horizontal reference plane that is parallel to the first mounting surface on the side away from the base frame assembly. The second reference plate includes a vertical reference plane that is parallel to the second mounting surface on the side away from the base frame assembly. The base frame assembly is also provided with a locking assembly for fixing the gyroscope frame assembly. The gyroscope frame assembly is provided with a second positioning pin assembly that cooperates with the first positioning pin assembly. The calibration table is provided with a fixing mechanism for fixing the first reference plate and / or the second reference plate.

[0009] According to one aspect of the above technical solution, the first positioning pin assembly includes three high and low reference positioning pins and two track-direction reference positioning pins, wherein the high and low reference positioning pins and the track-direction reference positioning pins are arranged orthogonally to each other.

[0010] According to one aspect of the above technical solution, the base frame assembly includes a cross frame, and a first longitudinal frame and a second longitudinal frame arranged perpendicular to both sides of the cross frame. The cross frame is provided with a rail-direction reference positioning pin, the first longitudinal frame is provided with a rail-direction reference positioning pin and a height-low reference positioning pin, and the second longitudinal frame is provided with two height-low reference positioning pins.

[0011] According to one aspect of the above technical solution, the second positioning pin assembly includes a front positioning pin that abuts against the high and low reference positioning pin and a side positioning pin that abuts against the track direction reference positioning pin.

[0012] According to one aspect of the above technical solution, the locking assembly includes a locking frame, and two first locking bolts and two second locking bolts that are threadedly connected to the locking frame.

[0013] According to one aspect of the above technical solution, a rotating pin is provided between the locking frame and the first longitudinal frame and the second longitudinal frame, and the locking assembly and the base frame assembly are detachably rotatably connected through the rotating pin.

[0014] According to one aspect of the above technical solution, the base assembly further includes a locking pin disposed on the first longitudinal frame, and the first longitudinal frame and the locking frame are fixed by the locking pin.

[0015] According to one aspect of the above technical solution, the first reference plate and the second reference plate have the same structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By installing the orthogonal bracket onto the gyroscope frame assembly, and then adjusting or measuring the orthogonal bracket so that its first mounting surface and second mounting surface are parallel to the end face of one end of the front positioning pin and the end face of one end of the side positioning pin of the second positioning pin, the adjusted or measured gyroscope frame assembly is then installed onto the calibration frame. With the cooperation of the first positioning pin assembly and the second positioning pin assembly, the first mounting surface and the second mounting surface are parallel to the horizontal reference plane and the vertical reference plane, respectively. Then, the gyroscope frame assembly is fixed and locked, and the calibration frame can be placed on the calibration table for the next step of calibration. Since the calibration frame is equipped with mutually orthogonal first and second reference plates, during calibration, only the calibration frame needs to be flipped to calibrate the two gyroscopes in sequence, avoiding measurement errors caused by disassembly and assembly, and improving operational efficiency and measurement accuracy. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the calibration device for the high and low track gyroscope of the track inspection instrument in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the orthogonal support structure in one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the calibration frame in one embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the base frame assembly in one embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the locking frame in one embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the gyroscope frame assembly in one embodiment of the present invention;

[0023] Explanation of main component symbols: 1-calibration frame, 2-base frame assembly, 21-cross frame, 22-first longitudinal frame, 23-second longitudinal plate, 24-first positioning pin assembly, 241-high and low reference positioning pin, 242-rail direction reference positioning pin, 3-locking assembly, 31-locking frame, 32-first locking bolt, 33-second locking bolt, 34-rotating pin, 35-locking pin, 4-first reference plate, 41-horizontal reference surface, 5-second reference plate, 51-vertical reference surface, 6-gyroscope frame assembly, 61-second positioning pin assembly, 611-front positioning pin, 612-side positioning pin, 7-orthogonal bracket, 71-first mounting surface, 72-second mounting surface, 8-calibration table, 81-fixing mechanism;

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] See Figures 1 to 3The calibration device for the high and low trajectory gyroscopes of the track inspection instrument provided in the first embodiment of this utility model includes a gyroscope frame assembly 6, and an orthogonal bracket 7 is installed inside the gyroscope frame assembly 6. The orthogonal bracket 7 is provided with a first mounting surface 71 and a second mounting surface 72. The first mounting surface 71 is used to install the high and low trajectory gyroscope, and the second mounting surface 72 is used to install the trajectory gyroscope. The entire gyroscope frame assembly 6 is installed on the calibration frame 1. With the calibration frame 1 fixed, the gyroscope frame assembly 6 and the calibration frame 1 form a whole. Then, the entire calibration frame 1 is placed on the calibration table 8 for fixing, and the next calibration operation can be performed.

[0029] See Figure 4 In this embodiment, the calibration frame 1 includes a base frame assembly 2 and a locking assembly 3. The base frame assembly 2 includes a cross frame 21 and a first longitudinal frame 22 and a second longitudinal frame 23 disposed at both ends of the cross frame 21. A first positioning pin assembly 24 is provided on the base frame assembly 2. Specifically, the first positioning pin assembly 24 includes three high and low reference positioning pins 241 and two track-direction reference positioning pins 242. The high and low reference positioning pins 241 and the track-direction reference positioning pins 242 are orthogonally arranged to each other. It should be noted that, utilizing the characteristic that three points determine a plane, in this embodiment, the high and low reference... Three positioning pins 241 are optional. These three positioning pins can be used to support the gyroscope frame assembly 6 and also facilitate the adjustment of the horizontality of the gyroscope frame assembly 6. Furthermore, the base frame assembly 2 includes a horizontal frame 21 and a first longitudinal frame 22 and a second longitudinal frame 23 arranged perpendicular to both sides of the horizontal frame 21. The horizontal frame 21 is provided with one track-direction reference positioning pin 242, the first longitudinal frame 22 is provided with one track-direction reference positioning pin 242 and one high / low reference positioning pin 241, and the second longitudinal frame 23 is provided with two high / low reference positioning pins 241.

[0030] In this embodiment, the gyroscope frame assembly 6 is provided with a second positioning pin assembly 61 that works in conjunction with the first positioning pin assembly 24. Further, the second positioning pin assembly 61 includes a front positioning pin 611 that abuts against the high and low reference positioning pin 241 and a side positioning pin 612 that abuts against the track reference positioning pin 242. It can be understood that there are three front positioning pins 611 and two side positioning pins 612.

[0031] In this embodiment, the calibration frame 1 is provided with a first reference plate 4 and a second reference plate 5. The second reference plate 5 is installed on one side of the crossbeam 21 of the base frame assembly 2, while the first reference plate 4 is installed on one side of the first longitudinal frame 22 and the second longitudinal frame 23 of the base frame assembly 2. Specifically, the base frame assembly 2 has a first reference plate 4 and a second reference plate 5 that are orthogonal to each other on the side away from the first positioning pin assembly 24. Further, the first reference plate 4 includes a horizontal reference surface 41 that is parallel to the first mounting surface 71 on the side away from the base frame assembly 2, and the second reference plate 5 includes a vertical reference surface 51 that is parallel to the second mounting surface 72 on the side away from the base frame assembly 2. When the gyroscope frame... When component 6 is placed on calibration frame 1, the three front positioning pins 611 on the gyroscope frame component 6 abut against the three high and low reference positioning pins 241 on calibration frame 1; the two side positioning pins 612 on the gyroscope frame component 6 abut against the two track reference positioning pins 242 on calibration frame 1. At this time, since the contact planes on one side of the first positioning pin component 24 and the second positioning pin component 61 are precision machined, the first mounting surface 71 on the orthogonal bracket 7 inside the gyroscope frame component 6 is parallel to the horizontal reference surface 41 and the second mounting surface 72 is parallel to the vertical reference surface 51. Then, the gyroscope frame component 6 can be fixed by the locking component 3 on calibration frame 1.

[0032] See Figure 5 and Figure 6 In this embodiment, the locking assembly 3 includes a locking frame 31, and two first locking bolts 32 and two second locking bolts 33 threadedly connected to the locking frame 31. It should be noted that the locking direction of the first locking bolts 32 is perpendicular to the plane formed by the three high and low reference positioning pins 241, and is located inside the triangle formed by the three high and low reference positioning pins 241. The locking direction of the second locking bolts 33 is perpendicular to the vertical reference plane 51. This allows the second positioning pin assembly 61 and the first positioning pin assembly 24 on the gyroscope frame assembly 6 to be engaged with each other after the locking bolts are tightened, thus fixing the gyroscope frame assembly 6 to the base frame assembly 2. This ensures that the first mounting surface 71 and the second mounting surface 72 on the orthogonal bracket 7 installed inside the gyroscope frame assembly 6 remain parallel and stationary to the horizontal reference plane 41 and the vertical reference plane 51. Furthermore, in this embodiment, the ends of the first locking bolt 32 and the second locking bolt 33 near the gyroscope frame assembly 6 are both made of rubber and are rotatably connected to the bodies of the first locking bolt 32 and the second locking bolt 33. This prevents damage to the housing of the gyroscope frame assembly 6 during tightening, while the plastic deformation properties of rubber prevent the first locking bolt 32 and the second locking bolt 33 from loosening. The other ends are both shaped like a quincunx knob for easy manual tightening.

[0033] See Figure 4 and Figure 5 Furthermore, a rotating pin 34 is provided between the locking frame 31 and the first longitudinal frame 22 and the second longitudinal frame 23. The locking assembly 3 and the base frame assembly 2 are detachably rotatably connected through the rotating pin 34. When it is necessary to remove the gyroscope frame assembly 6 from the calibration frame 1, it is only necessary to loosen the first locking bolt 32 and the second locking bolt 33 and then rotate the locking frame 31 to loosen the fixation of the gyroscope frame assembly 6. In this embodiment, the rotatable connection between the locking frame 31 and the base frame assembly 2 is achieved through a rotating pin 34. When the locking frame 31 and the base frame assembly 2 need to be separated, it is only necessary to pull out the connecting rotating pin 34.

[0034] After the locking bracket 31 locks the gyroscope frame assembly 6, in order to prevent the gyroscope frame assembly 6 and the locking bracket 31 from rotating slightly along the rotation direction of the locking bracket 31, thereby affecting the parallelism between the first mounting surface 71 and the horizontal reference surface 41, the base frame assembly 2 further includes a locking pin 35 disposed on the first longitudinal frame 22. The first longitudinal frame 22 and the locking bracket 31 are fixed by the locking pin 35, and the locking bracket 31 is fixed to the base frame assembly 2 by the locking pin 35, so that the locking bracket 31 cannot rotate.

[0035] After the gyroscope frame assembly 6 is fixed, the entire calibration frame 1 can be installed on the calibration table 8. The calibration frame 1 is fixed by the fixing mechanism 81 on the calibration table 8, and then the next step of calibrating the gyroscope in the current horizontal state can be carried out. If it is necessary to calibrate the gyroscope in another dimension of the calibration frame 1, simply remove the calibration frame 1 from the calibration table 8 and change the connection between the first reference plate 4 or the second reference plate 5 and the fixing mechanism 81, so that the next step of calibration of the other gyroscope can be quickly achieved. Specifically, the calibration table 8 is provided with a fixing mechanism 81 for fixing the first reference plate 4 and / or the second reference plate 5. As can be understood from the above, the first reference plate 4 and the second reference plate 5 have the same structure.

[0036] In summary, the calibration device for high and low track gyroscopes in the above embodiments of this utility model, by installing mutually orthogonal first and second reference plates on the calibration frame, and by setting mutually cooperating first and second positioning pin assemblies on the calibration frame and gyroscope frame assembly, and by finely machining and adjusting the end faces of one end of the positioning pins in the first and second positioning pin assemblies, ensures that after the gyroscope frame assembly is fixed on the calibration frame, the first mounting surface on the orthogonal bracket inside the gyroscope frame assembly is parallel to the horizontal reference plane on one side of the first reference plate, and the second mounting surface is parallel to the vertical reference plane on one side of the second reference plate. Finally, the calibration frame with the gyroscope frame assembly is simply installed on the calibration table to perform the gyroscope calibration operation. If it is necessary to calibrate a gyroscope in another dimension, simply remove the calibration frame and then rotate the calibration frame to fix the other reference plate to the calibration table. The operation is convenient and efficient, and also avoids errors caused by disassembly and assembly.

[0037] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A calibration device for a high-low trajectory gyroscope in a track inspection instrument, comprising an orthogonal bracket, a trajectory gyroscope, a high-low trajectory gyroscope, a gyroscope frame assembly, and a calibration table, wherein the orthogonal bracket is provided with a first mounting surface and a second mounting surface for mounting the high-low trajectory gyroscope and the trajectory gyroscope, characterized in that, The calibration device for the high and low orbit gyroscope of the track inspection instrument also includes a calibration frame for supporting and fixing the gyroscope frame assembly. The calibration frame includes a base frame assembly. The base frame assembly is provided with a first positioning pin assembly for supporting the gyroscope frame assembly. The base frame assembly has a first reference plate and a second reference plate that are orthogonal to each other on the side away from the first positioning pin assembly. The first reference plate includes a horizontal reference plane that is parallel to the first mounting surface on the side away from the base frame assembly. The second reference plate includes a vertical reference plane that is parallel to the second mounting surface on the side away from the base frame assembly. The base frame assembly is also provided with a locking assembly for fixing the gyroscope frame assembly. The gyroscope frame assembly is provided with a second positioning pin assembly that cooperates with the first positioning pin assembly. The calibration table is provided with a fixing mechanism for fixing the first reference plate and / or the second reference plate.

2. The calibration device for the high and low orbit gyroscope of the track inspection instrument according to claim 1, characterized in that, The first positioning pin assembly includes three high and low reference positioning pins and two track-direction reference positioning pins, which are orthogonally arranged to each other.

3. The calibration device for the high and low orbit gyroscope of the track inspection instrument according to claim 2, characterized in that, The base frame assembly includes a cross frame, and a first longitudinal frame and a second longitudinal frame arranged perpendicular to both sides of the cross frame. The cross frame is provided with a rail-direction reference positioning pin, the first longitudinal frame is provided with a rail-direction reference positioning pin and a height reference positioning pin, and the second longitudinal frame is provided with two height reference positioning pins.

4. The calibration device for the high and low orbit gyroscope of the track inspection instrument according to claim 3, characterized in that, The second positioning pin assembly includes a front positioning pin that abuts against the high and low reference positioning pin and a side positioning pin that abuts against the rail reference positioning pin.

5. The calibration device for the high and low orbit gyroscope of the track inspection instrument according to claim 3, characterized in that, The locking assembly includes a locking frame, and two first locking bolts and two second locking bolts that are threadedly connected to the locking frame.

6. The calibration device for the high and low orbit gyroscope of the track inspection instrument according to claim 2, characterized in that, A rotating pin is provided between the locking frame and the first and second longitudinal frames, and the locking assembly and the base frame assembly are detachably rotatably connected by the rotating pin.

7. The calibration device for the high and low orbit gyroscope of the track inspection instrument according to claim 3, characterized in that, The base assembly also includes a locking pin disposed on the first longitudinal frame, and the first longitudinal frame and the locking frame are fixed by the locking pin.

8. The calibration device for the high and low orbit gyroscope of the track inspection instrument according to claim 1, characterized in that, The first reference plate and the second reference plate have the same structure.

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