Calibrating device of track inspection tester

Abstract

The utility model belongs to the technical field of track inspection equipment, and discloses a calibrating device of a track inspection tester, which comprises a bearing table, a movable part, a motion driving device, a rotation driving device and two rolling parts, the movable part is arranged on the bearing table; the two rolling pieces are movably arranged on the bearing table, and the output end of the rotation driving device is connected with one rolling piece and drives the rolling piece to rotate around the center axis of the rolling piece. The motion driving device is arranged below the bearing table and can drive the bearing table to do multi-dimensional motion. According to the calibration device, mileage error calibration and continuous sampling triggering of the track inspection tester can be realized, and simulation and composite simulation of various track geometric parameters can be realized, so that the static performance and the dynamic performance of the track inspection tester can be accurately calibrated.

Description

Technical Field

[0001] The utility model belongs to the technical field of track detection equipment, and particularly relates to a calibration device for a track inspection instrument. Background Art

[0002] As a high-precision measurement device necessary during railway track construction and track fine adjustment, the track inspection instrument plays a crucial role in the smoothness of track laying and the high precision of long rail fine adjustment. According to the requirements of "Railway Track Inspection Instrument" (JJG 1090 - 2023), the track inspection instrument needs to be statically and dynamically calibrated (line test) during metrological verification. The static performance part is generally achieved using a track inspection instrument calibration bench, while the dynamic performance part needs to be carried out on the railway track. For a Class 0 track inspection instrument, the required track length is not less than 450m, and for a Class 1 track inspection instrument, it is not less than 200m. The track should include curves.

[0003] The cost of the track is about 10,000 yuan per meter. Therefore, building a site that meets the requirements requires a huge cost investment, and it also occupies a large area, making it not very feasible to build a self - built test site. Existing tracks are not a viable option due to operational and safety needs. Moreover, according to the provisions of JJG 1090 - 2023, during the line test calibration, the temperature change rate needs to be carried out in an environment where the temperature change rate is not greater than 2°C / 0.5h, and there is no vibration within a range of 300m around. Using outdoor tracks cannot meet the requirements. The line test also requires the track inspection instrument to perform repeated continuous sampling at a constant speed of (3.5 - 4) km / h, and compare the measurement repeatability of geometric parameters at the same mileage position through multiple sampling curves. However, the existing track inspection instrument calibration bench does not have the calibration functions of mileage error calibration, continuous sampling triggering, and dynamic performance detection. Content of the Utility Model

[0004] The purpose of the utility model is to provide a calibration device that can realize the mileage error calibration, continuous sampling triggering, and dynamic performance detection of the track inspection instrument.

[0005] The realization of the above purpose includes the following technical solutions.

[0006] An embodiment of the utility model provides a calibration device for a track inspection instrument, which includes a bearing platform, a movable part, a motion driving device, a rotation driving device, and two rolling parts;

[0007] The movable part is arranged on the bearing platform;

[0008] The two rolling parts are movably arranged on the bearing platform, and the output end of the rotation driving device is connected to one of the rolling parts and drives the rolling part to rotate around its own central axis;

[0009] The motion driving device is arranged below the bearing platform and can drive the bearing platform to perform multi - dimensional motion.

[0010] In some of these embodiments, the rolling member includes two rolling bodies, the two rolling bodies are arranged side by side, and the output end of the rotary driving device is connected to one of the rolling bodies of the rolling member.

[0011] In some of these embodiments, the motion driving device includes a base and a plurality of servo electric cylinders. The servo electric cylinders are arranged between the bearing platform and the base, and the output end of each servo electric cylinder is hinged to the bottom end of the bearing platform, and the other end of each servo electric cylinder opposite to the output end is hinged to the base.

[0012] In some of these embodiments, there are six servo electric cylinders, and the six servo electric cylinders are dispersedly arranged below the bearing platform.

[0013] In some of these embodiments, the movable member is slidably arranged on the bearing platform, and the motion driving device further includes a linkage member. One end of the linkage member is connected to the movable member, and the other end is connected to the base. The linkage member is used to form a relative sliding between the bearing platform and the movable member when the servo electric cylinder controls the bearing platform to perform multi-dimensional motion.

[0014] In some of these embodiments, the linkage member includes a fixed column, a first rod body and a second rod body. The fixed column is vertically arranged on the base, the first end of the first rod body is movably connected to the fixed column, the first rod body is perpendicularly connected to the second rod body, and the second rod body is movably connected to the movable member.

[0015] In some of these embodiments, the bearing platform includes a bearing body and a support suspension. The support suspension is partially suspended on the bearing body, a chute plate is arranged at one end of the support suspension away from the bearing body, and the movable member is slidably arranged on the chute plate.

[0016] In some of these embodiments, a vertically penetrating hole is formed in the chute plate, and the movable member slidably penetrates through the hole.

[0017] In some of these embodiments, a grating scale is arranged on the bearing platform along the sliding direction of the movable member.

[0018] In some of these embodiments, a fixed frame is arranged at the position of the bearing platform between the two rolling bodies. The fixed frame includes a support plate and two limiting plates arranged on the support plate, and a support column is arranged between the two limiting plates.

[0019] The technical solution provided by the present utility model has the following advantages and effects:

[0020] The calibration device is configured by arranging two rolling elements and one movable element on a carrier table, and connecting a rotation driving device to one of the rolling elements. After starting the measurement program, the rotation driving device can control the rotation of one of the rolling elements. The rotation of this rolling element drives the mileage measuring wheel of the track inspection instrument, thereby enabling the calibration of the mileage error of the track inspection instrument and the triggering of continuous sampling. By arranging the carrier table above the motion driving device and driving the carrier table to perform multi-dimensional motion through the motion driving device, the movable element can follow the carrier table to perform multi-dimensional motions such as pitching forward and backward and rolling left and right, so as to achieve the simulation of various track geometric parameters and composite simulation, and accurately calibrate the static performance and dynamic performance of the track inspection instrument. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of the calibration device for the track inspection instrument of the embodiment of the present utility model;

[0022] Figure 2 is Figure 1 the structural state schematic diagram of the calibration device equipped with the track inspection instrument.

[0023] Description of the Reference Numerals:

[0024] 100, calibration device;

[0025] 1, carrier table; 11, carrier body; 12, support suspension; 13, chute plate; 14, grating scale; 15, inclination sensor; 2, movable element; 3, motion driving device; 31, base; 32, servo electric cylinder; 〈33, first connecting member; 331, first mounting body; 332, first rotating ball; 34, second connecting member; 341, second mounting body; 342, second rotating ball; 35, linkage member; 351, fixed column; 352, first rod body; 353, second rod body; 354, rotary encoder; 355, T-shaped connector; 356, spherical plain bearing; 4, rotation driving device; 5, rolling element; 51, rolling body; 6, fixing frame; 61, support plate; 62, limiting plate; 63, support column;

[0026] 200, track inspection instrument; 201, frame; 202, left measuring wheel; 203, right measuring wheel. Detailed Embodiment

[0027] To facilitate the understanding of the present utility model, the following will describe the specific embodiments of the present utility model in more detail with reference to the accompanying drawings of the specification.

[0028] Unless otherwise specified or defined, the "first, second..." used herein is only for differentiating names and does not represent a specific quantity or order.

[0029] Unless otherwise specified or defined, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] It should be noted that in this article, "fixed to" and "connected to" can be directly fixed or connected to an element, or indirectly fixed or connected to an element.

[0031] An embodiment of the present utility model provides a calibration device 100 for a track inspection instrument, as Figure 1 and Figure 2 shown. The calibration device 100 includes a bearing platform 1, a movable member 2, a motion driving device 3, a rotation driving device 4, and two rolling members 5.

[0032] The movable member 2 is disposed on the bearing platform 1; the two rolling members 5 are movably disposed on the bearing platform 1, and the output end of the rotation driving device 4 is connected to one of the rolling members 5 and can drive the rolling member 5 to rotate; the motion driving device 3 is disposed below the bearing platform 1 and can drive the bearing platform 1 to perform multi-dimensional motion. It should be noted that, as Figure 2As shown, the track inspection instrument 200 applicable to the calibration device 100 has a conventional structure, specifically including a frame 201, two left measuring wheels 202 arranged at the left side of the bottom of the frame 201, and a single right measuring wheel 203 arranged at the right side of the bottom of the frame 201. Among them, one of the two left measuring wheels 202 is a mileage measuring wheel. The output end of the rotary driving device 4 is connected to the rolling member 5 that supports the mileage measuring wheel of the track inspection instrument 200, and the rolling member 5 is driven to rotate by the rotary driving device 4, so as to drive the mileage measuring wheel of the track inspection instrument 200 to rotate for mileage error calibration. It can be understood that when the calibration device 100 is used to detect the performance of the track inspection instrument 200, the two left measuring wheels 202 of the track inspection instrument 200 are respectively supported on the two rolling members 5, and the single right measuring wheel 203 is supported on the movable member 2. When the measurement program is started, one of the rolling members 5 is driven to rotate by the rotary driving device 4 such as a rotary motor. The rotation of the rolling member 5 drives the mileage measuring wheel of the track inspection instrument 200 to rotate, realizing mileage error calibration and continuous sampling triggering. In addition, by arranging the bearing table 1 above the motion driving device 3 and driving the bearing table 1 to perform multi-dimensional motion by the motion driving device 3, the movable member 2 can follow the bearing table 1 to perform multi-dimensional motions such as pitching back and forth and rolling left and right, so as to realize the simulation and composite simulation of various track geometric parameters, such as gauge, alignment, superelevation, vertical alignment, cross-level, etc., so as to accurately calibrate the static performance and dynamic performance of the track inspection instrument 200. In addition, it should be noted that the calibration device 100 may also have conventional controllers, power supplies, etc. The start or stop of the rotary driving device 4 and the motion driving device 3 are controlled by the controller. Since it is not the focus of protection of the present invention, no more details will be described here.

[0033] In summary, the calibration device 100 is provided with two rolling members 5 and a movable member 2 on the bearing table 1, and the rotary driving device 4 is connected to one of the rolling members 5. After the measurement program is started, the rotary driving device 4 can control the rotation of one of the rolling members 5. The rotation of the rolling member 5 drives the mileage measuring wheel of the track inspection instrument 200 to rotate, so as to realize the mileage error calibration and continuous sampling triggering of the track inspection instrument 200. By arranging the bearing table 1 above the motion driving device 3 and driving the bearing table 1 to perform multi-dimensional motion by the motion driving device 3, the movable member 2 can follow the bearing table 1 to perform multi-dimensional motions such as pitching back and forth and rolling left and right, so as to realize the simulation and composite simulation of various track geometric parameters, so as to accurately calibrate the static performance and dynamic performance of the track inspection instrument 200.

[0034] In some embodiments, such as Figure 1As shown, the rolling member 5 includes two rolling bodies 51. The two rolling bodies 51 are arranged side by side, and the output end of the rotary drive device 4 is connected to one of the rolling bodies 51 of the rolling member 5. Among them, the two rolling bodies 51 cooperate to support a left measuring wheel 202 of the track inspection instrument 200. The rotary drive device 4 is connected to one of the rolling bodies 51 of the mileage measuring wheel of the track inspection instrument 200. Thus, while driving the rolling body 51 to rotate through the rotary drive device 4, the mileage measuring wheel of the track inspection instrument 200 can be driven to rotate, thereby realizing the mileage error verification and continuous sampling trigger of the track inspection instrument 200.

[0035] In some embodiments, as Figure 1 shown, the motion drive device 3 includes a base 31 and a plurality of servo cylinders 32. The servo cylinders 32 are arranged between the carrier table 1 and the base 31, and the output ends of the servo cylinders 32 are hinged to the bottom end of the carrier table 1. The other ends of the servo cylinders 32 opposite to the output ends are hinged to the base 31. Among them, by arranging a plurality of servo cylinders 32 in cooperation, on the one hand, the carrier table 1 can be well supported, and on the other hand, according to the specific geometric parameters of the track inspection instrument 200 to be detected, the corresponding servo cylinders 32 can be driven to extend or retract, so as to drive the carrier table 1 to perform pitching or rolling motions forward and backward or left and right, so that the track inspection instrument 200 can measure dynamic geometric parameters such as height and gauge.

[0036] In some embodiments, as Figure 1 shown, the servo cylinder 32 is hinged to the carrier table 1 through a first connecting member 33. The first connecting member 33 includes a first mounting body 331 and a first rotating ball 332. The first mounting body 331 is inclined and arranged at the bottom of the carrier table 1, and a first receiving groove is provided at the end of the first mounting body 331 far from the carrier table 1. The first rotating ball 332 is arranged in the first receiving groove and can rotate in multiple directions relative to the first receiving groove. The first rotating ball 332 and the output end of the servo cylinder 32 can be connected through a connecting shaft.

[0037] In some embodiments, as Figure 1 shown, the other end of the servo cylinder 32 opposite to the output end, that is, the bottom end of the servo cylinder 32, is hinged to the base 31 through a second connecting member 34. The second connecting member 34 includes a second mounting body 341 and a second rotating ball 342. The second mounting body 341 is inclined and arranged on the base 31, and a second receiving groove is provided at the end of the second mounting body 341 far from the base 31. The second rotating ball 342 is arranged in the second receiving groove and can rotate in multiple directions relative to the second receiving groove. The second rotating ball 342 and the bottom end of the servo cylinder 32 can be connected through a connecting shaft.

[0038] Specifically, in this embodiment, six servo electric cylinders 32 are provided, and the six servo electric cylinders 32 are dispersedly arranged below the carrier table 1. Through these six servo electric cylinders 32, the movement of the carrier table 1 in six degrees of freedom can be smoothly carried out, avoiding the influence on the simulation of various track dynamic geometric parameters due to the difficult movement of the servo electric cylinders 32.

[0039] In some embodiments, as Figure 1 and Figure 2 shown, the movable member 2 is slidably arranged on the carrier table 1, and the motion driving device 3 further includes a linkage member 35. One end of the linkage member 35 is connected to the movable member 2, and the other end is connected to the base 31. The linkage member 35 is used to form a relative sliding between the carrier table 1 and the movable member 2 when the servo electric cylinder 32 controls the carrier table 1 to perform multi-dimensional movement. Among them, by setting the linkage member 35, when the servo electric cylinder 32 drives the carrier table 1 to translate in the left-right direction, that is, to translate along the extension direction of the left and right measuring wheels of the track inspection instrument 200, through the restriction of the linkage member 35, only the carrier table 1 moves, while the movable member 2 is fixed in place, so that a relative sliding is formed between the carrier table 1 and the movable member 2, so as to drive the two left measuring wheels 202 on the carrier table 1 to approach or move away from the right measuring wheel 203 on the movable member 2, thereby realizing the change of the distance between the left and right measuring wheels of the track inspection instrument 200 and measuring the change of the gauge.

[0040] In some embodiments, as Figure 1As shown in the figure, the linkage member 35 includes a fixed column 351, a first rod body 352 and a second rod body 353. The fixed column 351 is vertically arranged on the base 31. The first end of the first rod body 352 is movably connected to the fixed column 351. The first rod body 352 is perpendicularly connected to the second rod body 353. The second rod body 353 is movably connected to the movable member 2. Specifically, the first rod body 352 and the second rod body 353 can be connected through a T-shaped connector 355. The second rod body 353 can be hinged to the movable member 2 through a spherical plain bearing 356 to realize rotation and swing at any angle. The first rod body 352 is rotatably connected to the fixed column 351. Among them, through the cooperative linkage of the fixed column 351, the first rod body 352 and the second rod body 353, when the carrying platform 1 drives the movable member 2 to perform pitching and rolling attitude movements, the distance between the left and right measuring wheels of the track inspection instrument 200 can be changed to measure the gauge change. And when the entire carrying platform 1 rotates, the track inspection instrument 200 can measure the alignment change, that is, while driving the left and right measuring wheels to achieve multi-attitude follow-up, the gauge change is realized. Specifically, a rotating hole is provided on the fixed column 351. The first rod body 352 is rotatably inserted into the rotating hole through a rotating shaft to be rotatably connected to the fixed column 351. And a rotary encoder 354 is arranged on the fixed column 351, which is used to monitor the rotation angle and correct the error of the output value to further improve the measurement accuracy.

[0041] In some embodiments, as Figure 1 shown, the carrying platform 1 includes a carrying body 11 and a support suspension 12. The support suspension 12 is partially suspended on the carrying body 11. A chute plate 13 is arranged at one end of the support suspension 12 away from the carrying body 11. The movable member 2 is slidably arranged on the chute plate 13. Among them, by arranging the support suspension 12, the movable member 2 can be suspended on the carrying platform 1, which is convenient for the connection between the linkage member 35 and the movable member 2 and avoids interfering with the movement of the linkage member 35. The support suspension 12 can also carry and limit the cross beam of the frame 201 of the track inspection instrument 200 to prevent the track inspection instrument 200 from detaching from the carrying platform 1.

[0042] In some embodiments, a vertically penetrating hole body (not shown in the figure) is provided on the chute plate 13. The movable member 2 is slidably inserted into the hole body. Through the limiting effect of the hole body, when the chute plate 13 and the movable member 2 move relative to each other, a linear movement is formed to change the distance between the left and right measuring wheels of the track inspection instrument 200. And the arrangement that the movable member 2 is inserted into the hole body is convenient for the connection between the second rod body 353 of the linkage member 35 and the movable member 2 and avoids the structural interference of the chute plate 13 on the connection state of the two.

[0043] In some embodiments, as Figure 1As shown, along the sliding direction of the movable member 2, a grating scale 14 is provided on the bearing table 1. Specifically, the grating scale 14 is arranged on the chute plate 13 and is laid along the length direction of the hole body, so as to be able to monitor the lateral displacement of the movable member 2, correct the error of the output value of the left and right measuring wheel spacing, and further improve the measurement accuracy.

[0044] In some embodiments, as Figure 1 and Figure 2 shown, a fixing frame 6 is provided at the position of the bearing table 1 between the two rollers 51. The fixing frame 6 includes a support plate 61 and two limiting plates 62 arranged on the support plate 61. A support column 63 is arranged between the two limiting plates 62. Among them, the frame 201 of the track inspection instrument 200 located above the two left measuring wheels 202 is erected on the fixing frame 6. The frame 201 is located between the two limiting plates 62 and is supported by the support column 63. There are screw holes on the limiting plates 62, and the track inspection instrument 200 can be locked by bolts. With a support column 63 also provided on the support suspension 12 and the operation of locking by bolts, the track inspection instrument 200 can be suspended above the bearing table 1, and its left and right measuring wheels can contact the rolling member 5 and the movable member 2.

[0045] In some embodiments, as Figure 2 shown, an inclination sensor 15 is provided at the position of the bearing table 1 corresponding to the projection of the track inspection instrument 200. The inclination sensor 15 is used to monitor the inclination angle of the bearing table 1, correct the error of the output value, and further improve the measurement accuracy.

[0046] The above embodiments are not exhaustive lists based on the present invention. In addition, there may be multiple other embodiments not listed. Any replacement and improvement made on the basis of not violating the concept of the present invention fall within the protection scope of the present invention.

Claims

1. Verification device for track inspection instrument, characterized in that, The calibration device includes a carrier table, a movable member, a motion driving device, a rotation driving device, and two rolling members; The movable member is disposed on the carrier table; The two rolling members are movably disposed on the carrier table, and the output end of the rotation driving device is connected to one of the rolling members and drives the rolling member to rotate about its own central axis; The motion driving device is disposed below the carrier table and is capable of driving the carrier table to perform multi-dimensional motion.

2. The verification device according to claim 1, wherein The rolling member includes two rollers, the two rollers are arranged side by side, and the output end of the rotation driving device is connected to one of the rollers of the rolling member.

3. The verification device according to claim 1, wherein The motion driving device includes a base and a plurality of servo cylinders. The servo cylinders are disposed between the carrier table and the base, and the output ends of the servo cylinders are hinged to the bottom end of the carrier table, and the other ends of the servo cylinders opposite to the output ends are hinged to the base.

4. The verification device according to claim 3, characterized in that, There are six servo cylinders, and the six servo cylinders are dispersedly disposed below the carrier table.

5. The verification device according to claim 3, characterized in that, The movable member is slidably disposed on the carrier table. The motion driving device further includes a linkage member. One end of the linkage member is connected to the movable member, and the other end is connected to the base. The linkage member is used to form a relative sliding between the carrier table and the movable member when the servo cylinders control the carrier table to perform multi-dimensional motion.

6. The verification device according to claim 5, characterized in that, The linkage member includes a fixed column, a first rod body, and a second rod body. The fixed column is vertically disposed on the base. The first end of the first rod body is movably connected to the fixed column. The first rod body is perpendicularly connected to the second rod body, and the second rod body is movably connected to the movable member.

7. The verification device according to claim 5, characterized in that, The carrier table includes a carrier body and a support suspension. The support suspension is partially suspended on the carrier body. A chute plate is provided at one end of the support suspension away from the carrier body, and the movable member is slidably disposed on the chute plate.

8. The verification device according to claim 7, characterized in that, A vertically penetrating hole is formed in the chute plate, and the movable member slidably passes through the hole.

9. The verification device according to claim 5, wherein A grating ruler is disposed on the carrier table along the sliding direction of the movable member.

10. The verification device according to claim 2, wherein A fixing frame is disposed at a position between the two rollers on the carrier table. The fixing frame includes a support plate and two limiting plates disposed on the support plate. A support column is disposed between the two limiting plates.

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