A measuring trolley auxiliary calibration device and system

Abstract

This application discloses an auxiliary calibration device and system for a measuring trolley. A top plate is mounted on a second lifting plate. One end of a support mechanism is connected to the bottom of a first base plate, and the other end is fixed to the bottom of the rail during calibration. One end of a lifting screw is movably connected to a first lifting bearing seat on the first base plate, and the other end is rotatably connected to a nut seat. First supports are provided at both ends of the nut seat. The first supports are hinged to one end of a second scissor lift leg, and the middle of the first and second scissor lift legs are hinged via a connecting rod. The other end of the second scissor lift leg is hinged to a scissor support, which is fixed to the first lifting plate. One end of the first scissor lift leg is hinged to the second support, which is fixed to the first base plate. The other end of the first scissor lift leg is hinged to a third slider, which can slide laterally on a transverse guide shaft. This application solves the technical problems of high labor intensity, large calibration errors, and low measurement efficiency in existing manual on-site calibration methods.

Description

Technical Field

[0001] This application relates to the field of railway engineering machinery technology, and in particular to a device and system for auxiliary calibration of a measuring trolley. Background Technology

[0002] Railway tracks, as the ground foundation for train operation, possess both integral and discrete characteristics, and are one of the crucial basic infrastructures supporting high-speed train operation. However, with use and the passage of time, railway tracks inevitably deform, and their geometric parameters gradually deviate from their original state, affecting their smoothness. Therefore, during long-term maintenance and repair after railway tracks are put into operation, high-precision testing of track geometric smoothness is necessary to ensure that the track geometry meets the technical requirements of high smoothness and high stability.

[0003] A tamping machine, as a railway track straightening device, is a large-scale track maintenance machine used for the upkeep and repair of railway lines. It is a specialized vehicle capable of simultaneously repairing and detecting track parameters, and is widely used in major railway bureaus due to its high efficiency and accuracy. The measuring trolley is the device on the tamping machine that detects track parameters. It accurately measures the actual position of the rail by relying on the contact between the tread and flange of the trolley wheels and the inner side of the rail head. The measuring trolley is equipped with a lateral level sensor (also known as an electronic pendulum), which detects the lateral horizontal deviation of the two rails; a height sensor (leveling sensor), which detects the longitudinal height deviation of the track; and a versine sensor (or sine sensor), which detects the directional deviation of the track. The detection accuracy of these sensors is a key factor determining the accurate detection and correction of the track geometry parameters by the tamping machine.

[0004] However, after a period of use, the tamping machine may experience a decrease in operational accuracy or even malfunction due to wear and tear on the measuring trolley or replacement of damaged parts. Therefore, recalibration of the machine's sensor measurement system is necessary. A "standard rail" refers to the rails whose lateral, longitudinal, and versine errors are negligible. Because factory calibration of new machines is performed on these "standard rails," on-site calibration of the tamping machine's sensor measurement system is much more difficult than factory calibration. Users often struggle to find "standard rails" at the work site and typically choose a section of rail with the smallest possible error. This on-site sensor measurement method results in greater calibration errors and is time-consuming and labor-intensive.

[0005] The following documents are relevant to this application in the prior art:

[0006] Existing technology 1 is the paper "Detection Principle and On-site Calibration of Longitudinal Level of D09-32 Continuous Tamping Machine" published by Zhang Yuanbo in the May 1, 2008 issue of "China High-tech Enterprises". This paper discloses a detection principle and calibration method for longitudinal level, mainly for a simulated vehicle. It discloses a calibration principle and method for the longitudinal level of a simulated D0932 tamping machine, using an optical level and shims to calibrate the longitudinal level of the tamping machine. However, a lot of manual operation is still required on-site, including setting up a laser level on the track (which is difficult to level), manually adjusting the height of the scale repeatedly, and using shims, which is time-consuming and labor-intensive.

[0007] In summary, the limitations of the current on-site calibration of various sensors on tamping measurement trolleys are mainly reflected in the following aspects:

[0008] 1) The lack of standard rails at stations and work sites affects calibration accuracy. Creating a standard track section at the construction site is time-consuming, labor-intensive, costly, and involves a large workload.

[0009] 2) The standard route at the construction site is manually repaired or simulated by adding shims. The on-site calibration procedure is complicated, time-consuming and labor-intensive, requiring running around on and off the vehicle, and it is difficult to guarantee the accuracy requirements.

[0010] 3) Poor on-site calibration accuracy caused deviations in the tamping machine's operational accuracy;

[0011] 4) Standard lines can only be used at designated locations and cannot be moved, making them inconvenient for random use.

[0012] Therefore, developing a new device and method to replace the existing calibration method to quickly fit the function of the standard rail and quickly calibrate the horizontal, vertical, and directional aspects of the onboard sensor measurement system has become an urgent technical problem to be solved. Summary of the Invention

[0013] In view of this, the purpose of this application is to provide a measuring trolley auxiliary calibration device and system to solve the technical problems of high labor intensity, large calibration error and low measurement efficiency of the existing manual on-site calibration method.

[0014] To achieve the aforementioned objectives, this application provides a technical solution for an auxiliary calibration device for a measuring trolley. The auxiliary calibration device includes: a support mechanism, a lifting screw, a nut seat, a first base plate, a second base plate, a first lifting plate, a second lifting plate, a top plate, a second support, a first scissor lift leg, a second scissor lift leg, a third slider, a transverse guide shaft, and a scissor lift support. The bottom of the first base plate has longitudinally arranged grippers, which fix the first base plate to the rail during calibration. The top plate is disposed on the second lifting plate. One end of the support mechanism is connected to the bottom of the first base plate, and the other end is used to fix it to the rail base during calibration. One end of the lifting screw is movably connected to a first lifting bearing seat disposed on the first base plate, and the other end is rotatably connected to the nut seat. Rotating the lifting screw can drive the nut seat to move laterally. The nut seat has first supports at both ends, and the first supports are hinged to one end of the second scissor lift leg. The middle parts of the first scissor lift leg and the second scissor lift leg are hinged through a connecting rod. The other end of the second scissor lift leg is hinged to a scissor lift support, which is fixed to the first lifting plate. One end of the first scissor lift leg is hinged to a second support, which is fixed to the first base plate. The other end of the first scissor lift leg is hinged to a third slider, which engages with a transverse guide shaft and can slide laterally along the transverse guide shaft. The transverse guide shaft is fixed to the first lifting plate. The second base plate is connected to the first lifting plate. A second guide rail is provided laterally on the second base plate. A second slider is provided at the bottom of the second lifting plate and can slide on the second guide rail.

[0015] Furthermore, the transverse guide shaft is fixed to the first lifting plate by the first transverse limit seat and the second transverse limit seat.

[0016] Furthermore, the device also includes a vertical guide sleeve and a vertical guide shaft. The vertical guide sleeve is fixed to the first base plate, one end of the vertical guide shaft is fixed to the second base plate, and the other end can movably pass through the vertical guide sleeve. The vertical guide shaft can slide on the vertical guide sleeve.

[0017] Furthermore, a gasket is provided between the second support and the first base plate.

[0018] Furthermore, a first slider is provided at the bottom of the first support, and a first guide rail is provided on the first base plate along the horizontal direction. The first slider can slide on the first guide rail to realize the nut seat moving horizontally.

[0019] Furthermore, rotating the lifting screw causes the nut seat to move, and the nut seat causes the first support and the first slider to move on the first guide rail. The second scissor lift leg rises, causing the first scissor lift leg to rise, and the rise of the first and second scissor lift legs causes the second base plate, the first lifting plate, and the second lifting plate to rise. Reversing the rotation of the lifting screw causes the second base plate, the first lifting plate, and the second lifting plate to descend.

[0020] Furthermore, the support mechanism includes a helical tie rod and a support base. One end of the helical tie rod is hinged to the bottom of the first base plate, and the other end is hinged to the support base. The support base is used to fix the rail base. During calibration, the horizontal level of the top plate is adjusted by rotating the sleeve in the middle of the helical tie rod. Fixing bolts are provided at both ends of the first base plate along the longitudinal direction, and the vertical level of the top plate is adjusted by rotating these fixing bolts.

[0021] Furthermore, a first transverse sliding seat is provided on the second base plate, and the transverse sliding screw is threadedly connected to the first transverse sliding seat. The transverse sliding screw is rotatably connected to a second transverse sliding support, and the second transverse sliding support is connected to a second lifting plate. The middle part of the top plate is hinged to the second lifting plate, and the top plate can rotate relative to the second lifting plate.

[0022] Furthermore, the rotating transverse lead screw can drive the second transverse support to move laterally, and the second transverse support drives the first lifting plate, the second lifting plate and the top plate to move laterally.

[0023] Furthermore, the second lifting plate is provided with two handle seats along the longitudinal direction. The rotating handle is threadedly connected to the handle seat and contacts the top plate after passing through the threaded hole on the handle seat. By rotating the two rotating handles, the top plate can be rotated in the horizontal plane.

[0024] Furthermore, one end of the vertical limiting screw is threaded to the first base plate, and the other end is threaded to the second base plate. Rotating the vertical limiting screw allows the second base plate to move up and down. A locking nut is threaded onto the vertical limiting screw. After the height between the first and second base plates is adjusted to the correct position, rotating the locking nut locks the height of the second base plate.

[0025] Furthermore, the top plate is provided with a transversely extending threading rod, and one end of the threading rod along the transverse direction has a threading hole for passing a lead wire. When directional calibration is performed, the lead wire passes longitudinally through the threading hole on one side of the threading rod.

[0026] Furthermore, the top plate is also equipped with a level gauge for indicating height, and the two level gauges are connected by a water pipe. During calibration, the height of the top plates of the two auxiliary calibration devices is adjusted so that the liquid levels on both sides of the level gauges are at the same scale value.

[0027] This application also provides a technical implementation scheme for a measuring trolley auxiliary calibration system, which includes: a pair or more auxiliary calibration devices arranged in a transverse direction on the rail as described above, and a water pipe connected between any two auxiliary calibration devices.

[0028] By implementing the technical solution of the measuring trolley auxiliary calibration device and system provided in this application, the following beneficial effects are achieved:

[0029] (1) The measurement trolley auxiliary calibration device and system of this application can replace manual on-site calibration, quickly fit the standard rail function on the work site, and quickly realize the horizontal, vertical and directional calibration of the on-board sensor measurement system. It can reduce labor intensity, reduce calibration error and improve measurement efficiency.

[0030] (2) The auxiliary calibration device and system for measuring trolley of this application can be easily and quickly locked, installed and removed. After the auxiliary calibration device is locked on a single rail, it will not be displaced due to external force. It is applicable to various rail models such as 50kg / m, 60kg / m and 75kg / m. At the same time, it is small in size, simple in structure, light in weight, low in manufacturing cost, highly practical, easy to handle, place and promote.

[0031] (3) The auxiliary calibration device and system for measuring trolley of this application can quickly achieve fine adjustment of horizontal leveling, vertical leveling and vertical height adjustment. The mechanism has high structural strength through surface contact, and can further reduce calibration error and improve calibration accuracy. It can realize joint calibration of multiple sensors and greatly improve measurement efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional structural schematic diagram of a specific embodiment of the auxiliary calibration device for measuring carts of the present invention;

[0034] Figure 2 This is a three-dimensional structural schematic diagram of a specific embodiment of the auxiliary calibration device for measuring carts of the present invention from another perspective;

[0035] Figure 3 This is a partial cross-sectional structural schematic diagram of a specific embodiment of the auxiliary calibration device for measuring carts of the present invention;

[0036] Figure 4 This is a top view of the installation structure of a specific embodiment of the auxiliary calibration device for measuring carts of the present invention;

[0037] Figure 5 This is a side view of the installation structure of a specific embodiment of the auxiliary calibration device for measuring carts of the present invention;

[0038] Figure 6 This is a schematic diagram of the scale structure in a specific embodiment of the auxiliary calibration device for measuring carts of the present invention;

[0039] Figure 7 This is a schematic diagram of the structural composition of a specific embodiment of the measurement trolley auxiliary calibration system of the present invention;

[0040] Figure 8 This is a schematic front view of a specific embodiment of the measurement trolley auxiliary calibration system of the present invention;

[0041] Figure 9 This is a schematic top view of a specific embodiment of the measurement trolley auxiliary calibration system of the present invention;

[0042] In the diagram: 1-Standard rail, 2-Lead wire, 3-First auxiliary calibration platform, 4-Second auxiliary calibration platform, 5-Threading rod, 6-Level gauge, 7-Water pipe, 8-Support mechanism, 9-Gripper, 10-Vertical guide sleeve, 11-Vertical guide shaft, 12-Lifting screw, 13-First lifting bearing seat, 14-Nut seat, 15-Vertical limit screw, 16-Locking nut, 17-First support, 18-First slider, 19-First guide rail, 20-First base plate, 21-Second base plate, 22-First lifting plate, 23-Second lifting plate, 24-Top plate, 25-Rotation 26-Handle, 27-Transverse lead screw, 28-First transverse support, 29-Washer, 30-Second support, 31-Second slider, 32-Second guide rail, 33-First scissor lift leg, 34-Second scissor lift leg, 35-Second lifting bearing seat, 36-Connecting rod, 37-Second transverse support, 38-Washer, 39-Busset, 40-Third slider, 41-Transverse guide shaft, 42-First transverse limit seat, 43-Second transverse limit seat, 44-Scissor lift support, 45-Level, 46-Fixing bolt, 47-Screw rod, 48-Support seat. Detailed Implementation

[0043] Horizontal level: The horizontal height difference between two parallel tracks, also known as the horizontal level of the tracks;

[0044] Longitudinal level: The horizontal elevation of the front and rear sections of the same track, also known as the longitudinal level of the track.

[0045] Track chord: The on-board measurement system for detecting the direction of the tamping vehicle. The chord is located in the middle of the vehicle bottom. Taking the three-point method as an example, the track chord is fixed at points B and D on the trolley at the front and rear respectively. At point C, the chord passes through the track versine sensor and can move freely to detect the versine value of the line.

[0046] Leveling chord: The tamping vehicle is equipped with a measuring system to detect the longitudinal level of the left and right rails. There is one on each side of the upper part of the vehicle. Taking the three-point method as an example, the left leveling chord is fixed at points B and D on the top of the trolley, respectively. The leveling chord at point M passes through the leveling sensor and can move freely to detect the longitudinal level of the rail.

[0047] Measuring trolleys: There are generally 4 measuring trolleys on the tamping machine, which are called A, B, C and D point measuring trolleys respectively.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] As attached Figure 1 To be continued Figure 9 As shown, a specific embodiment of the measurement trolley auxiliary calibration device and system of this application is given. The application will be further described below with reference to the accompanying drawings and specific embodiments.

[0050] Example 1

[0051] As attached Figure 1 To be continued Figure 5 As shown, an embodiment of the auxiliary calibration device for a measuring trolley according to this application specifically includes: a support mechanism 8, a lifting screw 12, a nut seat 14, a first base plate 20, a second base plate 21, a first lifting plate 22, a second lifting plate 23, a top plate 24, a second support 30, a first scissor lift leg 33, a second scissor lift leg 34, a third slider 40, a transverse guide shaft 41, and a scissor lift support 44. The bottom of the first base plate 20 is provided with grippers 9 along the longitudinal direction (i.e., the Y direction), and during calibration, the first base plate 20 is fixed to the rail 1 by the grippers 9. The top plate 24 is disposed on the second lifting plate 23. One end of the support mechanism 8 is connected to the bottom of the first base plate 20, and the other end is used to fix it to the bottom of the rail 1 during calibration.

[0052] The auxiliary calibration device is equipped with a lifting screw 12. Both ends of the lifting screw 12 are movably connected to a first lifting bearing seat 13 and a second lifting bearing seat 35 respectively, which are mounted on the first base plate 20. The middle part is rotatably connected to a nut seat 14. The lifting screw 12 can drive the nut seat 14 to move laterally, as shown in the attached diagram. Figure 5 As shown. The first lifting bearing seat 13 and the second lifting bearing seat 35 are fixed to the first base plate 20 by bolts. A bearing is provided between the lifting screw 12 and the first lifting bearing seat 13 and the second lifting bearing seat 35. The lifting screw 12 is provided with a handwheel installation interface. Rotating the lifting screw 12 can drive the nut seat 14 to move freely in the lateral direction (i.e., the X direction). A first support 17 is fixed to each end of the nut seat 14 by bolts. The bottom of each first support 17 is connected to a first slider 18 by bolts. The first support 17 is provided at both ends of the nut seat 14. The first support 17 is hinged to one end of the second scissor leg 34. The first scissor leg 33 and the middle of the second scissor leg 34 are hinged by a connecting rod 36. The other end of the second scissor leg 34 is hinged to the scissor support 44. The scissor support 44 is fixed to the first lifting plate 22 by bolts. One end of the first scissor lift leg 33 is hinged to the second support 30 via a pin, and the second support 30 is fixed to the first base plate 20. The other end of the first scissor lift leg 33 is hinged to the third slider 40, and the two second scissor lift legs 33 are hinged together via the third slider 40. The third slider 40 cooperates with two transverse guide shafts 41, and the third slider 40 can slide freely laterally on the transverse guide shafts 41. The transverse guide shafts 41 are fixed to the first lifting plate 22, and the second base plate 21 is connected to the first lifting plate 22. A second guide rail 32 is provided laterally on the second base plate 21, and a second slider 31 is provided at the bottom of the second lifting plate 23, allowing the second slider 31 to slide freely on the second guide rail 32. The second guide rail 32 is fixed to the second base plate 21 by bolts, and the second slider 31 is fixed to the second lifting plate 23 by bolts, allowing the second slider 31 to slide freely on the second guide rail 32.

[0053] As attached Figure 3 As shown, the transverse guide shaft 41 is further fixed to the first lifting plate 22 by the first transverse limit seat 42 and the second transverse limit seat 43. The transverse guide shaft 41 is fixed to the first transverse limit seat 42 and the second transverse limit seat 43 by bolts, and the first transverse limit seat 42 and the second transverse limit seat 43 are fixed to the first lifting plate 22 by bolts.

[0054] As attached Figure 1As shown, the auxiliary calibration device also includes a vertical guide sleeve 10 and a vertical guide shaft 11. The vertical guide sleeve 10 is fixed to the first base plate 20, and one end of the vertical guide shaft 11 is fixed to the second base plate 21, while the other end can movably pass through the vertical guide sleeve 10, allowing the vertical guide shaft 11 to slide on the vertical guide sleeve 10. The vertical guide sleeve 10 is fixed to the first base plate 20 by bolts, and one end of the vertical guide shaft 11 is fixed to the second base plate 21 by bolts, while the other end is in a free state, allowing the vertical guide shaft 11 to slide freely on the vertical guide sleeve 10. One end of the vertical limiting screw 15 is threaded to the first base plate 20, and the other end is threaded to the second base plate 21. Rotating the vertical limiting screw 15 allows the second base plate 21 to move up and down. A locking nut 16 is threaded to the vertical limiting screw 15. After adjusting the height between the first base plate 20 and the second base plate 21, rotating the locking nut 16 locks the height.

[0055] As attached Figure 1 As shown, a shim 29 is further provided between the second support 30 and the first base plate 20. The second support 30 and the shim 29 are fixed to the first lifting plate 22 by bolts. The second lifting plate 23 is fixed to the first lifting plate 22 by bolts, and the second base plate 21 is connected to the first lifting plate 22 by bolts. The second guide rail 32 is fixed to the second base plate 21 by bolts, and the second slider 31 is fixed to the second lifting plate 23 by bolts. A first slider 18 is provided at the bottom of the first support 17, and a first guide rail 19 is provided on the first base plate 20 along the lateral direction. The first slider 18 can slide on the first guide rail 19, and the first guide rail 19 is fixed to the first base plate 20 by bolts, so as to realize the movement of the nut seat 14 in the lateral direction (i.e., the X direction).

[0056] The height of the auxiliary calibration device along the vertical direction (i.e., the Z-axis) is adjusted as follows:

[0057] Rotating the lifting screw 12 moves the nut seat 14, which in turn moves the first support 17 and the first slider 18 along the first guide rail 19. The second scissor lift leg 34 rises, causing the first scissor lift leg 33 to rise, and the rise of the first scissor lift leg 33 and the second scissor lift leg 34 causes the second base plate 21, the first lifting plate 22, and the second lifting plate 23 to rise. Reversing the rotation of the lifting screw 12 lowers the second base plate 21, the first lifting plate 22, and the second lifting plate 23. The remaining auxiliary calibration devices are adjusted vertically using the same method to achieve leveling, ultimately completing the horizontal and vertical leveling adjustment of the entire auxiliary calibration system.

[0058] As attached Figure 3As shown, the support mechanism 8 further includes a helical tie rod 47 and a support seat 48. One end of the helical tie rod 47 is hinged to the bottom of the first base plate 20, and the other end is hinged to the support seat 48, which is used to fix the rail base of the rail 1. During calibration, the horizontal level of the top plate 24 is adjusted by rotating the sleeve in the middle of the helical tie rod 47. Fixing bolts 46 are provided at both ends of the first base plate 20 along the longitudinal direction. The horizontal level of the top plate 24 is adjusted by rotating the fixing bolts 46. During calibration, the support mechanism 8 is fitted onto one side of the rail base of the rail 1 and secured with bolts. The helical tie rod 47 specifically adopts a combination structure of a central internal threaded sleeve and two end screws. The level 45 is fixed to the top plate 24 with bolts. The data on the level 45 is observed to ensure that the values ​​in the X and Y directions are within the specified range. The X-direction value is achieved by rotating the middle sleeve of the helical tie rod 47, and the Y-direction value is achieved by adjusting the two fixing bolts 46. After leveling in both the X and Y directions, tighten the clamping jaw 9 fixing bolts.

[0059] As attached Figure 1 As shown, a first transverse sliding seat 28 is provided on the second base plate 21, and a transverse sliding screw 27 is threadedly connected to the first transverse sliding seat 28. The transverse sliding screw 27 is rotatably connected to a second transverse sliding support 37, which is connected to a second lifting plate 23. The top plate 24 is hinged to the second lifting plate 23 at its center, and the top plate 24 can rotate relative to the second lifting plate 23. Rotating the transverse sliding screw 27 can drive the second transverse sliding support 37 to move laterally (i.e., in the X direction), and the second transverse sliding support 37 drives the first lifting plate 22, the second lifting plate 23, and the top plate 24 to move laterally. The top plate 24 further drives the threading rod 5 to move in the X direction.

[0060] As attached Figure 1 As shown, two handle seats 26 are arranged longitudinally on the second lifting plate 23. The handle seats 26 are fixedly connected to the top plate 24 by bolts. The rotating handle 25 is threadedly connected to the handle seat 26 and contacts the top plate 24 after passing through the threaded hole on the handle seat 26. By rotating the two rotating handles 25, the top plate 24 can be rotated in the horizontal plane (and XY plane), and the top plate 24 further drives the wire rod 5 to rotate.

[0061] The X-axis and XY-plane rotation positions of the first auxiliary calibration platform 3 are adjusted in the following ways:

[0062] The transverse lead screw 27 is threadedly connected to the first transverse support 28, which is bolted to the second base plate 21. The transverse lead screw 27 is fixed to the second transverse support 37 but can rotate relative to it, and the second transverse support 37 is bolted to the second lifting plate 23. The top plate 24 is hinged to the second lifting plate 23 by bolts, washers 38, and bushings 39, and can rotate relative to the second lifting plate 23.

[0063] One end of the vertical limiting screw 15 is threaded to the first base plate 20, and the other end is threaded to the second base plate 21. Rotating the vertical limiting screw 15 allows the second base plate 21 to move up and down. The locking nut 16 is threaded to the vertical limiting screw 15. After the height between the first base plate 20 and the second base plate 21 is adjusted to the correct position, rotating the locking nut 16 locks the height of the second base plate 21.

[0064] As attached Figure 4 As shown, a threading rod 5 extending laterally is provided on the top plate 24. One end of the threading rod 5 along the outer side of the lateral direction has a threading hole K for passing the lead wire 2 through, as shown in the attached diagram. Figure 6 As shown. In a typical embodiment of the present invention, the lead wire 2 can be a physical pull wire, such as fishing line, or a laser-guided wire. When directional calibration is performed, the lead wire 2 passes longitudinally through the threading hole K of one side of the scale 5. When directional calibration is performed, the lead wire 2 passes longitudinally through the threading hole K of one side of the threading rod 5. A level gauge 6 for indicating height is also provided on the top plate 24, and the two level gauges 6 are connected by a water pipe 7. When calibration is performed, the height of the top plates 24 of the two auxiliary calibration devices is adjusted so that the liquid levels of the level gauges 6 on both sides are at the same scale value.

[0065] Example 1 proposes a novel auxiliary calibration device. This device is installed on rails 1 of various sizes (50kg / m, 60kg / m, 75kg / m, etc.) to simulate a "standard rail" at the work site. The auxiliary calibration device described in this example allows for convenient and quick installation and removal. Once locked onto a single rail 1, it will not shift due to external forces. Furthermore, the device is small in size, lightweight, easy to transport and place, and can quickly achieve lateral leveling, longitudinal leveling, and vertical height adjustment. The auxiliary calibration device described in this specific embodiment eliminates the need for manual on-site calibration, reducing labor intensity, minimizing calibration errors, improving calibration accuracy, and enabling joint calibration of multiple sensors, thus improving measurement efficiency and providing effective assurance for the efficient operation of tamping machines.

[0066] Example 2

[0067] As attached Figure 7 To be continued Figure 9As shown, an embodiment of the auxiliary calibration system for a measuring trolley according to this application specifically includes: one or more auxiliary calibration devices arranged laterally on the rail 1 as described in Embodiment 1, and a water pipe 7 connecting any two auxiliary calibration devices. In this embodiment, the auxiliary calibration devices further include a first auxiliary calibration device 3 and a second auxiliary calibration device 4. A (double-pass) level gauge 6 for indicating the height of the top plate 24 is installed on the threaded rod 5 of both the first auxiliary calibration device 3 and the second auxiliary calibration device 4. The two level gauges 6 are connected by the water pipe 7, which is filled with water and fixed to one side of the level gauge 6. The level gauge 6 has a scale display. Adjusting the lifting screw 12 on the first auxiliary calibration device 3 and the second auxiliary calibration device 4 adjusts the height of the top plate 24 so that the liquid levels on both sides of the level gauge 6 are at the same scale value, which is considered as the first auxiliary calibration device 3 and the second auxiliary calibration device 4 having the same height. One first auxiliary calibration device 3 and one second auxiliary calibration device 4 constitute an auxiliary calibration platform.

[0068] As attached Figure 7 As shown, several first auxiliary calibration devices 3 are installed on one rail 1, and the same number of second auxiliary calibration devices 4 are installed on another rail 1. The installation positions of the first auxiliary calibration devices 3 and the second auxiliary calibration devices 4 are symmetrical about the longitudinal centerline between the two rails 1. The rail 1 is located at the transverse center position of the grippers 9 of the first auxiliary calibration devices 3 and the second auxiliary calibration devices 4.

[0069] Taking the adjustment of the first auxiliary calibration device 3 as an example, the orientation of several first auxiliary calibration devices 3 on a rail 1 is adjusted in the following manner:

[0070] The threading rod 5 is fixed to the top plate 24 by bolts. A threading hole K is provided at one end of the threading rod 5 along its outer edge for the lead wire 2 to pass through. Ensure the lead wire 2 passes through the threading holes K of the two first auxiliary calibration devices 3. Adjust the lateral position of the middle first auxiliary calibration device 3 to ensure the lead wire 2 can pass through the threading holes K of all the first auxiliary calibration devices 3 on one rail 1, thus completing the directional adjustment of the first auxiliary calibration devices 3. The directional adjustment of the second auxiliary calibration device 4 on the other rail 1 is completed using the same method. Rotate the transverse lead screw 27, which drives the threading rod 5 to move laterally via the top plate 24. Rotate the two rotating handles 25, which rotate the threading rod 5 via the rotation of the top plate 24.

[0071] Each of the first auxiliary calibration platform 3 and the second auxiliary calibration platform 4 is equipped with a (double-pass) level gauge 6, which is fixedly connected to the top plate 24 by bolts. The two level gauges 6 are connected by a water pipe 7, which is filled with water. The level gauges 6 have scale displays. Adjusting the height of the first auxiliary calibration platform 3 and the second auxiliary calibration platform 4 so that the liquid levels on both sides of the level gauges 6 are at the same scale value is considered to make the heights of the first auxiliary calibration platform 3 and the second auxiliary calibration platform 4 consistent. One first auxiliary calibration platform 3 and one second auxiliary calibration platform 4 constitute a pair of auxiliary calibration platforms.

[0072] The auxiliary calibration system described in Example 2 involves placing an auxiliary calibration device at regular intervals along the longitudinal direction of the rail 1 at the work site to simulate a "standard rail". The auxiliary calibration devices placed on the two rails 1 are symmetrical about the center line of the rails. All the auxiliary calibration devices are combined to form a complete auxiliary calibration system for the measuring trolley. The mechanical calibration process of the tamping trolley's measuring system mainly includes: parking the wheels of the measuring trolley above the auxiliary calibration devices; quickly adjusting the longitudinal level and direction of each auxiliary calibration device on one of the "standard rails" rails 1; ensuring that the lateral level of each auxiliary calibration device on both rails 1 of the "standard rail" is equal to the height of the measuring trolley wheel tread; lowering the measuring trolley wheels to contact the auxiliary calibration devices, using the auxiliary calibration devices as the measurement reference for detecting the various sensors of the measuring trolley.

[0073] Example 3

[0074] An embodiment of an auxiliary calibration method for a measuring trolley based on the system described in Embodiment 2 of this application includes an auxiliary calibration device comprising a support mechanism 8, a position adjustment mechanism, a first base plate 20, and a top plate 24. One end of the support mechanism 8 is connected to the bottom of the first base plate 20, and the other end is fixed to the bottom of the rail 1 during calibration. A gripper 9 is longitudinally arranged on the bottom of the first base plate 20, and the first base plate 20 is fixed to the rail 1 by the gripper 9 during calibration. Fixing bolts 46 are arranged at both ends of the first base plate 20 longitudinally. The position adjustment mechanism is disposed on the first base plate 20, and the top plate 24 is disposed on the position adjustment mechanism. The method specifically includes the following steps:

[0075] S11) The paired auxiliary calibration devices 3 are symmetrically installed on the left and right rails 1 in the transverse direction. The horizontal level of the top plate 24 is adjusted by the support mechanism 8, and the vertical level of the top plate 24 is adjusted by the fixing bolts 46.

[0076] S12) Connect water pipes 7 for filling water between each pair of auxiliary calibration devices along the horizontal direction. Adjust the height of the top plate 24 relative to the first bottom plate 20 through the position adjustment mechanism so that the liquid levels at both ends of the water pipe 7 are at the same scale value, thereby completing the height leveling of the auxiliary calibration devices and realizing horizontal leveling adjustment.

[0077] The measurement trolley auxiliary calibration method described in this embodiment also includes the following steps:

[0078] S13) Connect water pipes 7 between all auxiliary calibration devices along the longitudinal direction, and adjust the height of the top plate 24 relative to the first bottom plate 20 through the position adjustment mechanism so that the liquid level at both ends of all water pipes 7 is at the same scale value, thereby completing the height leveling of all auxiliary calibration devices and realizing horizontal and vertical leveling adjustment.

[0079] A transversely extending threading rod 5 is provided on the top plate 24. The auxiliary calibration method for the measuring trolley also includes the following direction adjustment steps:

[0080] S14) Pass the lead wire 2 through the wire hole K of the scale 5 located at the front and rear respectively, and then adjust the lateral position of the auxiliary calibration device located in the middle to ensure that the lead wire 2 can pass through the wire hole K of the scale 5 on one side in a straight line in the longitudinal direction, so as to realize the directional adjustment of the rail 1 on that side.

[0081] The position adjustment mechanism further includes a lifting screw 12, a nut seat 14, a second base plate 21, a first lifting plate 22, a second lifting plate 23, a second support 30, a first scissor lift leg 33, a second scissor lift leg 34, a third slider 40, a transverse guide shaft 41, and a scissor lift support 44. The second base plate 21 is connected to the first lifting plate 22, and the top plate 24 is mounted on the second lifting plate 23. One end of the lifting screw 12 is movably connected to the first lifting bearing seat 13 mounted on the first base plate 20, and the other end is rotatably connected to the nut seat 14. The nut seat 14 has a first support 17 at both ends, and the first support 17 is hinged to one end of the second scissor lift leg 34. The first scissor lift leg 33 and the second scissor lift leg 34 are hinged together by a connecting rod 36 located in the middle. The other end of the second scissor lift leg 34 is hinged to the scissor lift support 44, which is fixed to the first lifting plate 22. One end of the first scissor lift leg 33 is hinged to the second support 30, which is fixed to the first base plate 20. The other end of the first scissor lift leg 33 is hinged to the third slider 40, which cooperates with the transverse guide shaft 41. The transverse guide shaft 41 is fixed to the first lifting plate 22, and the third slider 40 can slide laterally on the transverse guide shaft 41. A first slider 18 is provided at the bottom of the first support 17, and a first guide rail 19 is provided laterally on the first base plate 20. The first slider 18 can slide on the first guide rail 19, thereby realizing the nut seat 14 moving laterally. The height adjustment process in steps S12) and S13) further includes:

[0082] Rotating the lifting screw 12 causes the nut seat 14 to move, which in turn causes the first support 17 and the first slider 18 to move on the first guide rail 19. The second scissor lift leg 34 rises, causing the first scissor lift leg 33 to rise, and the rise of the first scissor lift leg 33 and the second scissor lift leg 34 causes the second base plate 21, the first lifting plate 22, and the second lifting plate 23 to rise. Reversing the rotation of the lifting screw 12 causes the second base plate 21, the first lifting plate 22, and the second lifting plate 23 to descend.

[0083] A first transverse sliding seat 28 is provided on the second base plate 21, and a transverse sliding screw 27 is threadedly connected to the first transverse sliding seat 28. The transverse sliding screw 27 is rotatably connected to a second transverse sliding support 37, which is connected to a second lifting plate 23. A second guide rail 32 is provided on the second base plate 21 along the transverse direction, and a second slider 31 is provided at the bottom of the second lifting plate 23. The second slider 31 can slide laterally on the second guide rail 32. After step S14), the following transverse adjustment step is also included:

[0084] S15) Rotate the transverse lead screw 27, which drives the second transverse support 37 to move laterally. The second transverse support 37 drives the first lifting plate 22, the second lifting plate 23 and the top plate 24 to move laterally. The top plate 24 drives the threading rod 5 to move laterally.

[0085] The top plate 24 is hinged to the second lifting plate 23 at its center, and the top plate 24 can rotate relative to the second lifting plate 23. Two handle seats 26 are longitudinally arranged on the second lifting plate 23. A rotating handle 25 is threadedly connected to the handle seat 26 and contacts the top plate 24 after passing through a threaded hole in the handle seat 26. Following step S15), the following horizontal in-plane angle adjustment step is also included:

[0086] S16) Adjust the rotating handle 25 to make the top plate 24 rotate relative to the second lifting plate 23, thereby realizing the rotation angle adjustment of the top plate 24 and driving the wire rod 5 to rotate.

[0087] The support mechanism 8 further includes a helical tie rod 47 and a support base 48. One end of the helical tie rod 47 is hinged to the bottom of the first base plate 20, and the other end is hinged to the support base 48. The support base 48 is used to fix the rail base of the rail 1. Step S11) further includes:

[0088] Fix the support base 48 to the outer side of the rail base of the rail 1, and observe the data of the level 45 placed on the top plate 24 to ensure that the lateral and longitudinal values ​​are within the specified range. The lateral value is adjusted by rotating the sleeve in the middle of the spiral tie rod 47, and the longitudinal value is adjusted by rotating the two fixing bolts 46 along the longitudinal direction. After the lateral and longitudinal levelness is adjusted, tighten the clamp 9 onto the rail 1.

[0089] Step S11) further includes:

[0090] An equal number of auxiliary calibration devices are installed on the left and right rails 1, with the installation positions of the auxiliary calibration devices symmetrical about the longitudinal centerline between the two rails 1. In step S11), the rail 1 is located at the center position of the gripper 25 of the auxiliary calibration device along the transverse direction.

[0091] A level gauge 6 for indicating the height of the top plate 24 is provided on the threading rod 5. In steps S12) and S13), the end of the water pipe 7 is fixed to one side of the level gauge 6 to indicate the scale value of the liquid level in the water pipe 7.

[0092] In the description of this application, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly set on or indirectly set on another element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to another element.

[0093] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0094] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0095] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0096] By implementing the technical solutions of the measuring trolley auxiliary calibration device and system described in the specific embodiments of this application, the following technical effects can be achieved:

[0097] (1) The measurement trolley auxiliary calibration device and system described in the specific embodiments of this application can replace manual on-site calibration, quickly fit the standard rail function on the work site, and quickly realize the horizontal, vertical and directional calibration of the on-board sensor measurement system. It can reduce labor intensity, reduce calibration error and improve measurement efficiency.

[0098] (2) The measuring trolley auxiliary calibration device and system described in the specific embodiments of this application can be easily and quickly locked, installed and removed. After the auxiliary calibration device is locked on a single rail, it will not be displaced due to external force. It is applicable to various rail models such as 50kg / m, 60kg / m, and 75kg / m. At the same time, it is small in size, simple in structure, light in weight, low in manufacturing cost, highly practical, easy to transport, place and promote.

[0099] (3) The measurement trolley auxiliary calibration device and system described in the specific embodiments of this application can quickly achieve fine adjustment of horizontal leveling, vertical leveling and vertical height adjustment. The mechanism has high structural strength through surface-to-surface contact, and can further reduce calibration error and improve calibration accuracy. It can realize joint calibration of multiple sensors and greatly improve measurement efficiency.

[0100] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0101] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has been disclosed above with reference to preferred embodiments, it is not intended to limit this application. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this application based on the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the spirit and technical essence of this application. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of this application without departing from the content of the technical solutions of this application shall still fall within the protection scope of the technical solutions of this application.

Claims

1. A calibration device for a measuring trolley, characterized in that, include: Support mechanism (8), lifting screw (12), nut seat (14), first base plate (20), second base plate (21), first lifting plate (22), second lifting plate (23), top plate (24), second support (30), first scissor support leg (33), second scissor support leg (34), third slider (40), transverse guide shaft (41) and scissor support (44); the bottom of the first base plate (20) is provided with a gripper (9) along the longitudinal direction, and the first base plate (20) is fixed to the rail (1) by the gripper (9) during calibration; The top plate (24) is mounted on the second lifting plate (23). One end of the support mechanism (8) is connected to the bottom of the first base plate (20), and the other end is used to fix it to the bottom of the rail (1) during calibration. The two ends of the lifting screw (12) are movably connected to the first lifting bearing seat (13) and the second lifting bearing seat (35) mounted on the first base plate (20), respectively, and the middle part is rotatably connected to the nut seat (14). Rotating the lifting screw (12) can drive the nut seat (14) to move laterally. The two ends of the nut seat (14) are provided with The first support (17) is hinged to one end of the second scissor lift leg (34), and the first scissor lift leg (33) and the second scissor lift leg (34) are hinged to each other via a connecting rod (36); the other end of the second scissor lift leg (34) is hinged to the scissor lift support (44), which is fixed to the first lifting plate (22); one end of the first scissor lift leg (33) is hinged to the second support (30), which is fixed to the first base plate (20); the first scissor lift leg (33) The other end of the slide is hinged to the third slider (40), which is in cooperation with the transverse guide shaft (41). The third slider (40) can slide laterally on the transverse guide shaft (41). The transverse guide shaft (41) is fixed on the first lifting plate (22). The second base plate (21) is connected to the first lifting plate (22). The second base plate (21) is provided with a second guide rail (32) laterally. The bottom of the second lifting plate (23) is provided with a second slider (31), which can slide on the second guide rail (32).

2. The auxiliary calibration device for the measuring trolley according to claim 1, characterized in that: The transverse guide shaft (41) is fixed on the first lifting plate (22) by the first transverse limit seat (42) and the second transverse limit seat (43).

3. The auxiliary calibration device for the measuring trolley according to claim 1 or 2, characterized in that: The device also includes a vertical guide sleeve (10) and a vertical guide shaft (11). The vertical guide sleeve (10) is fixed on the first base plate (20). One end of the vertical guide shaft (11) is fixed on the second base plate (21), and the other end can movably pass through the vertical guide sleeve (10). The vertical guide shaft (11) can slide on the vertical guide sleeve (10).

4. The auxiliary calibration device for the measuring trolley according to claim 3, characterized in that: A gasket (29) is also provided between the second support (30) and the first base plate (20).

5. The auxiliary calibration device for the measuring trolley according to claim 1, 2 or 4, characterized in that: The bottom of the first support (17) is provided with a first slider (18), and the first base plate (20) is provided with a first guide rail (19) along the horizontal direction. The first slider (18) can slide on the first guide rail (19) to realize the movement of the nut seat (14) along the horizontal direction.

6. The auxiliary calibration device for the measuring trolley according to claim 5, characterized in that: Rotating the lifting screw (12) causes the nut seat (14) to move, and the nut seat (14) causes the first support (17) and the first slider (18) to move on the first guide rail (19); the second scissor support leg (34) rises, causing the first scissor support leg (33) to rise, and the first scissor support leg (33) and the second scissor support leg (34) rise, causing the second base plate (21), the first lifting plate (22) and the second lifting plate (23) to rise; rotating the lifting screw (12) in the opposite direction causes the second base plate (21), the first lifting plate (22) and the second lifting plate (23) to fall.

7. The auxiliary calibration device for the measuring trolley according to claim 1, characterized in that: The support mechanism (8) includes a spiral tie rod (47) and a support seat (48). One end of the spiral tie rod (47) is hinged to the bottom of the first base plate (20), and the other end is hinged to the support seat (48). The support seat (48) is used to fix the bottom of the rail (1). When calibrating, the horizontal level of the top plate (24) is adjusted by rotating the sleeve in the middle of the spiral tie rod (47). The first base plate (20) is provided with fixing bolts (46) at both ends along the longitudinal direction. The horizontal level of the top plate (24) is adjusted by rotating the fixing bolts (46).

8. The auxiliary calibration device for the measuring trolley according to claim 3, characterized in that: The second base plate (21) is provided with a first transverse seat (28), and the transverse screw (27) is connected to the first transverse seat (28) by a thread; the transverse screw (27) is rotatably connected to the second transverse support (37), and the second transverse support (37) is connected to the second lifting plate (23); the middle part of the top plate (24) is hinged to the second lifting plate (23), and the top plate (24) can rotate relative to the second lifting plate (23).

9. The auxiliary calibration device for the measuring trolley according to claim 8, characterized in that: The rotating transverse lead screw (27) can drive the second transverse support (37) to move laterally, and the second transverse support (37) drives the first lifting plate (22), the second lifting plate (23) and the top plate (24) to move laterally.

10. The auxiliary calibration device for the measuring trolley according to any one of claims 1, 2, 4, 6, 8 or 9, characterized in that: The second lifting plate (23) has two handle seats (26) arranged longitudinally. The rotating handle (25) is threadedly connected to the handle seat (26) and contacts the top plate (24) after passing through the threaded hole on the handle seat (26). The top plate (24) can be rotated in the horizontal plane by rotating the two rotating handles (25).

11. The auxiliary calibration device for the measuring trolley according to claim 10, characterized in that: One end of the vertical limiting screw (15) is threaded to the first base plate (20), and the other end is threaded to the second base plate (21). When the vertical limiting screw (15) is rotated, the second base plate (21) can move up and down. The locking nut (16) is threaded to the vertical limiting screw (15). When the height between the first base plate (20) and the second base plate (21) is adjusted to the correct position, the height of the second base plate (21) is locked by rotating the locking nut (16).

12. The auxiliary calibration device for a measuring trolley according to any one of claims 1, 2, 4, 6, 8, 9 or 11, characterized in that: The top plate (24) is provided with a transversely extending thread rod (5), and the outer end of the thread rod (5) is provided with a thread hole (K) for passing through the lead wire (2); when the direction is calibrated, the lead wire (2) passes through the thread hole (K) of the thread rod (5) on one side in the longitudinal direction.

13. The auxiliary calibration device for the measuring trolley according to claim 12, characterized in that: The top plate (24) is also equipped with a liquid level gauge (6) for indicating height. The two liquid level gauges (6) are connected by a water pipe (7). When calibrating, the liquid level of the two liquid level gauges (6) is at the same scale value by adjusting the height of the top plate (24) of the two auxiliary calibration devices.

14. A calibration system for a measuring trolley, characterized in that, include: A pair or more auxiliary calibration devices as described in any one of claims 1 to 13 are arranged in a transverse pair on the rail (1), and a water pipe (7) is connected between any two auxiliary calibration devices.

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