A track inspection trolley with automatic fine-tuning for precision track measurement

Abstract

This invention relates to a track inspection trolley for precision track measurement with automatic fine-tuning. It includes a track measurement trolley and automatic fine-tuning mechanisms mounted on both sides. An industrial computer mounted on the trolley's computer tray is equipped with host computer software. This software remotely controls an automatic total station via wireless communication, locking and tracking a precision measuring prism, dynamically and continuously measuring the prism's coordinates, and reading data from the trolley's tilt and gauge sensors. Simultaneously, it calculates the horizontal and vertical deviations of the track at the current mileage position and sends the deviation values ​​and directions to the automatic fine-tuning mechanisms mounted on both sides of the trolley. Based on the deviation values ​​and directions, the automatic fine-tuning mechanisms control a motor to rotate a sleeve, turning a fine-tuning screw to adjust the track's horizontal and vertical alignment to the designed position. This invention achieves precise measurement of the horizontal and vertical deviations of the left and right tracks and automatically completes the adjustment simultaneously, significantly improving track fine-tuning efficiency.

Description

Technical Field

[0001] This invention relates to the field of track measurement technology, specifically to a track inspection trolley that can be automatically fine-tuned for precision track measurement. Background Technology

[0002] With the increasing number of new high-speed railway and subway projects in my country, and the growing operational mileage, the workload of operation and maintenance is also increasing year by year. Both new construction and operation and maintenance require fine-tuning of the tracks. Track fine-tuning relies on track surveying trolleys to collect key geometric parameters such as track gauge, superelevation, horizontal alignment, and elevation. On-site surveying technicians then synchronize the data to track adjustment workers on both sides, guiding them to complete the track position adjustment. Currently, there are three main shortcomings:

[0003] (1) Low efficiency of fine-tuning operation: Workers use wrenches to tighten the adjusting screws, which cannot be accurately positioned. Multiple measurements and adjustments are required to adjust the track plane and elevation position to the allowable deviation range. The efficiency of track fine-tuning operation is constrained by the repeated measurements and adjustments and the efficiency of workers' fine-tuning.

[0004] (2) Fine-tuning operations are greatly affected by worker factors: the worker's experience, proficiency, work status and work attitude have a great impact on the efficiency of the entire fine-tuning operation. With the same automatic total station, track fine-tuning trolley and surveying technicians, different fine-tuning workers can have different working times for a shift, sometimes by several hours.

[0005] (3) The existing operation mode transmits data by verbal communication. During the verbal communication process, the transmission of adjustment parameters is easily distorted due to language expression deviations and environmental noise interference, which can easily lead to adjustment deviations and often require repeated adjustments. The data needs to be transferred through intermediate personnel and the parameters need to be repeatedly confirmed, which prolongs the adjustment time of a single track section and affects the overall construction progress.

[0006] In summary, the entire industry urgently needs an automated track fine-tuning system. In recent years, design institutes, research institutions, and industry enterprises have made various attempts and innovations, currently focusing on two main directions: one is large-scale, dedicated fine-tuning equipment. This equipment is large and heavy, inconvenient for on-site operation, cannot achieve the required accuracy, and its efficiency is not significantly improved compared to manual labor; the other is installing fine-tuning mechanisms on the track panels. This system is expensive, requiring an investment of several million yuan per work area, and is complex and large-scale, requiring multiple technical personnel with different specialties, and a period of adjustment before it can operate smoothly. Both of these approaches use fine-tuning trolleys to measure track data and then send or input the deviation data to the fine-tuning equipment. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a track inspection trolley for precision measurement of tracks with automatic fine adjustment. It can accurately measure the horizontal and vertical deviations of the left and right tracks and automatically complete the adjustment simultaneously, eliminating the need for workers to use wrenches to tighten the fine adjustment screws to adjust the track. This ensures that the deviation of the track plane and elevation position from the design position is within the allowable range, greatly improving the efficiency of track fine adjustment.

[0008] To achieve the above objectives, a track inspection trolley with automatic fine-tuning capability for precision track measurement is designed. The trolley includes a track measurement trolley and automatic fine-tuning mechanisms mounted on both sides. A precision measuring prism, tilt sensor, and gauge sensor are installed on the crossbeam of the track measurement trolley. An industrial computer mounted on the trolley's computer tray is equipped with host computer software. This software remotely controls an automatic total station via wireless communication, locks and tracks the precision measuring prism, and dynamically and continuously measures its coordinates while reading data from the tilt and gauge sensors. Simultaneously, the software calculates the deviations of the track's horizontal and vertical alignment from the design values ​​at the current mileage position. It then wirelessly transmits the deviation value and direction to the automatic fine-tuning mechanisms mounted on both sides of the track measurement trolley. Based on the deviation value and direction, the automatic fine-tuning mechanisms control their motors to rotate sleeves, thereby turning fine-tuning screws and adjusting the track's horizontal and vertical alignment to the design position.

[0009] Furthermore, the automatic fine-tuning mechanism is connected to the track measuring trolley via a quick-connect plate. The quick-connect plate has limit posts on both sides and fastening screws at its four corners, enabling quick installation and disassembly.

[0010] Furthermore, the quick-connect plate is equipped with a linear guide rail and a vertical lifting motor. The linear guide rail is installed vertically. The near end of the main beam of the automatic fine-tuning mechanism is connected to the linear guide rail via a slider. The bottom of the near end of the main beam of the automatic fine-tuning mechanism is equipped with a lead screw bearing seat, and the vertical lifting lead screw is connected to the lead screw bearing seat. The other end of the vertical lifting lead screw is connected to the vertical lifting motor. The vertical lifting motor rotates the vertical lifting lead screw, thereby driving the automatic fine-tuning mechanism to rise or fall vertically along the linear guide rail.

[0011] Furthermore, the far end of the main beam of the automatic fine-tuning mechanism is equipped with a switching motor, a switching main gear, an adjusting main gear, a fine-tuning motor, an adjusting elevation slave gear, an adjusting plane slave gear, an elevation adjusting sleeve, an elevation adjusting screw head, a plane adjusting sleeve, and a plane adjusting screw head. The switching motor is electrically connected to the circuit board. After receiving adjustment data, the circuit board drives the switching motor to rotate. The switching motor drives the switching main gear to rotate. The switching main gear meshes with the switching slave gear and drives the switching slave gear to rotate. A switching lead screw is connected to the switching slave gear, and the switching lead screw meshes with the adjusting main gear. A fine-tuning motor is connected above the adjusting main gear, and the adjusting main gear is screwed onto the adjusting main gear shaft. The switching screw rotates with the switching slave gear, driving the adjusting master gear to move vertically up and down along the adjusting master gear shaft. The adjusting elevation slave gear and the adjusting plane slave gear are respectively located on both sides of the adjusting master gear. The adjusting master gear, which moves up and down, meshes with the adjusting elevation slave gear or the adjusting plane slave gear respectively. The adjusting elevation slave gear is connected to the adjusting elevation sleeve through the adjusting elevation flexible connecting rod, and the adjusting plane slave gear is connected to the adjusting plane sleeve through the adjusting plane flexible connecting rod. The adjusting elevation sleeve and the adjusting plane sleeve are respectively provided with adjusting elevation screw head and adjusting plane screw head below them, which are connected to adjusting elevation screw and adjusting plane screw respectively.

[0012] Furthermore, the host computer software controls the vertical lifting motor to rotate the vertical lifting screw, so that after the automatic fine adjustment mechanism descends as a whole, the elevation adjustment sleeve connected to the elevation adjustment flexible connecting rod is fitted onto the elevation adjustment screw head, and the plane adjustment sleeve connected to the plane adjustment flexible connecting rod is fitted onto the plane adjustment screw head; when the host computer software obtains the precise coordinates of the precision measuring prism and calculates the plane and elevation deviation values, it sends the deviation value, deviation direction, and adjustment sequence to the wireless communication antenna installed on the wireless antenna mount wirelessly. After receiving the adjustment data, the circuit board drives the switching motor to rotate.

[0013] Furthermore, the host computer software continuously obtains the coordinates of the precision measuring prism, the tilt sensor, and the track gauge sensor, and synchronously calculates the deviation value and the deviation direction. After completing one round of adjustment, if the deviation data is less than the allowable deviation value, the current track frame crossbeam has been adjusted to the correct position. The host computer software controls the vertical lifting motor to rotate the vertical lifting screw, causing the automatic fine adjustment mechanism to rise as a whole. The elevation adjustment sleeve connected to the elevation adjustment flexible connecting rod disengages from the elevation adjustment screw head, and the plane adjustment sleeve connected to the plane adjustment flexible connecting rod disengages from the plane adjustment screw head.

[0014] Furthermore, the embedded software on the circuit board calculates the required rotation angle and rotation direction of the elevation adjustment sleeve and the plane adjustment sleeve based on the pitch, gear ratio, clearance value, screw tightness error, deviation value, and deviation direction of the elevation adjustment screw and the plane adjustment screw. After driving the fine adjustment motor to rotate, the elevation adjustment screw and the plane adjustment screw are rotated respectively, thereby adjusting the track plane and elevation position to the design position.

[0015] Furthermore, the main beam of the automatic fine-tuning mechanism is equipped with a power socket, a switch, a data interface socket, a status indicator light, and a wireless antenna mount. An external lithium battery powers the automatic fine-tuning mechanism through the power socket. The switch controls the automatic fine-tuning mechanism to turn on and off. The data interface socket is used to receive deviation values ​​and directions via a wired connection, and is used for parameter setting, testing, and debugging of the automatic fine-tuning mechanism. The status indicator light displays the current status of the device, including but not limited to standby mode, working mode, and whether there is a fault. The wireless antenna mount is used to mount a wireless communication antenna, and the wireless antenna mount is internally connected to the circuit board.

[0016] Furthermore, the circuit board has an MCU module, embedded software, a wireless communication module, and a memory. The circuit board is used to receive and process deviation values ​​and deviation directions, calculate the required rotation angle of the fine-tuning motor, control the fine-tuning motor, control the switching motor, store configuration parameters and correction parameters, manage power, manage status, and handle exceptions.

[0017] Furthermore, the main beam of the automatic fine-tuning mechanism is made of carbon fiber rectangular tube, which reduces the overall weight of the automatic fine-tuning mechanism while ensuring strength.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) This invention provides a track inspection trolley that integrates track precision measurement and automatic fine adjustment, which realizes the precise measurement of track deviation and automatically completes the adjustment at the same time. It eliminates the need for workers to use wrenches to tighten the fine adjustment screws to adjust the track, and quickly and accurately adjusts the track plane and elevation position to the design position. Its automatic fine adjustment is completed in one go, with high efficiency and high precision, which greatly improves the efficiency of track fine adjustment and solves the core pain point of current track fine adjustment.

[0020] (2) The deviation data and deviation direction of the track measurement calculation of the present invention are directly sent to the automatic fine adjustment structure by wireless communication, breaking the data transfer barrier of multiple links, avoiding errors and time consumption. Operators do not need to repeatedly confirm the data. The time for fine adjustment of a single track section can be reduced by more than 30%, which greatly improves the overall fine adjustment efficiency, shortens the construction period, and can efficiently adapt to the construction period requirements of large-scale track fine adjustment, solving the core pain point of low efficiency in the existing mode.

[0021] (3) The present invention is powered by a removable lithium battery, which eliminates the need for an external power supply on site. The equipment is simple, quick to deploy, start up and measure, and has high operating efficiency.

[0022] (4) The equipment of the present invention has a simple structure, is easy to operate, and is simple to transport, deploy and operate. It requires less personnel and only one measurement technician is needed to complete all measurement work. Moreover, the weight of the entire system is only one-thousandth of the weight of the current automatic track panel fine adjustment system, and the cost is only one-tenth to one-twentieth of the current automatic track panel fine adjustment system.

[0023] (5) The main beam of the fine adjustment mechanism of the present invention is made of carbon fiber material. The horizontal and vertical adjustments share one fine adjustment motor, saving two fine adjustment motors and greatly reducing the weight of the automatic fine adjustment structure.

[0024] (6) In the automatic fine-tuning mechanism of the present invention, the fine-tuning main gear can move vertically on the main gear shaft with limit under the control of the switching motor, so as to realize the switching of the fine-tuning main gear and the adjustment elevation slave gear or the adjustment plane slave gear meshing;

[0025] (7) The present invention features a modular design with quick-assembly and disassembly components between the automatic fine-tuning mechanism and the track measuring trolley, which can be quickly assembled and disassembled while ensuring assembly accuracy; the lithium battery is externally connected, which is convenient for charging and transportation; the track measuring trolley can operate independently, which is convenient for calibration and configuration, and can also be used for other track inspection operations; the modular design facilitates transportation, handling, deployment, operation and maintenance.

[0026] (8) Under the action of the vertical lifting motor, the automatic fine adjustment mechanism of the present invention can automatically rise or fall along the vertically installed linear guide rail;

[0027] (9) The elevation adjustment sleeve and the horizontal adjustment sleeve of the present invention are flexibly connected to the drive shaft, so that they can be quickly put on the adjustment screw head even if there is a deviation in the on-site installation or tooling.

[0028] (10) The present invention uses a suitable fine-tuning motor and gear ratio, so that the small size and light weight of the servo motor can perform automatic fine-tuning operations.

[0029] In summary, this invention is a track inspection trolley integrating precision track measurement and automatic fine-tuning, belonging to the field of information technology. It involves installing an automatic fine-tuning mechanism on an existing track fine-tuning trolley, enabling it to perform automatic fine-tuning. This allows for precise measurement of the horizontal and vertical deviations of the track, with simultaneous and automatic adjustments. It eliminates the need for workers to use wrenches to tighten fine-tuning screws, ensuring that the deviations from the design position of the track plane and elevation are within acceptable limits. Furthermore, the entire system features a modular design, allowing for rapid assembly and disassembly. It boasts high precision, light weight, and low investment, eliminating the need for fine-tuning workers and requiring only one measurement technician to operate it. This invention is worthy of widespread application. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0032] In the diagram: 1. Host computer software; 2. Precision measuring prism; 3. Quick-release connecting plate; 4. Linear guide rail; 5. Slider; 6. Power socket; 7. Switch; 8. Data interface socket; 9. Status indicator light; 10. Wireless antenna mount; 11. Circuit board; 12. Main beam; 13. Planar adjustment flexible connecting rod; 14. Planar adjustment driven gear; 15. Switching screw; 16. Adjusting main gear shaft; 17. Fine-tuning motor; 18. Adjusting main gear; 19. Elevation adjustment driven gear shaft; 2 0. Elevation adjustment driven gear; 21. Elevation adjustment flexible connecting rod; 22. Switch driven gear; 23. Elevation adjustment sleeve; 24. Elevation adjustment screw head; 25. Planar adjustment screw head; 27. Elevation adjustment screw; 28. Switch main gear; 29. ​​Switch motor; 30. Planar adjustment sleeve; 31. Clamping device; 32. Limiting post; 34. Screw bearing seat; 35. Vertical lifting screw; 36. Vertical lifting motor; 37. Tilt sensor; 38. Track gauge sensor. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] As attached Figure 1 and attached Figure 2 As shown ( Figure 2 for Figure 1 (Enlarged view at point A) This invention provides a track inspection trolley for precision track measurement with automatic fine adjustment. It mainly includes a track measurement trolley and automatic fine adjustment mechanisms installed on both sides of it. A precision measuring prism 2, an inclination sensor 37, and a track gauge sensor 38 are installed on the crossbeam of the track measurement trolley. An industrial computer mounted on the computer tray of the track measurement trolley is loaded with host computer software 1, which remotely controls an automatic total station via wireless communication. This software locks and tracks the precision measuring prism 2, dynamically and continuously measures the coordinates of the precision measuring prism 2, and reads data from the inclination sensor 37 and track gauge sensor 38 of the track measurement trolley. Simultaneously, it calculates the horizontal and vertical deviations of the track at the current mileage position and sends the deviation value and direction wirelessly to the automatic fine adjustment mechanisms installed on both sides of the track measurement trolley. The embedded software of the automatic fine adjustment mechanisms controls the motor to rotate the sleeve and tighten the fine adjustment screw according to the deviation value and direction, thereby adjusting the track plane and elevation to the designed position.

[0035] The automatic fine-tuning mechanism is connected to the track measuring trolley through the quick-connect plate 3. Two limit posts 32 are provided on both sides of the quick-connect plate 3. Four fastening screws are provided at the four corners of the quick-connect plate 3, and quick installation and disassembly are achieved through the fastening screws to ensure assembly accuracy.

[0036] The quick-connect plate 3 is equipped with a linear guide rail 4 and a vertical lifting motor 36. The linear guide rail 4 is installed vertically. The near end of the main beam 12 of the automatic fine-tuning mechanism is connected to the linear guide rail 4 via a slider 5. A lead screw bearing seat 34 is installed at the bottom of the near end of the main beam 12 of the automatic fine-tuning mechanism, and a vertical lifting lead screw 35 is connected to the lead screw bearing seat 34. The other end of the vertical lifting lead screw 35 is connected to the vertical lifting motor 36. The vertical lifting motor 36 rotates the vertical lifting lead screw 35, thereby driving the automatic fine-tuning mechanism to rise or fall vertically along the linear guide rail 4. The main beam 12 of the automatic fine-tuning mechanism is made of carbon fiber rectangular tubing, which ensures strength while reducing the overall weight of the automatic fine-tuning mechanism.

[0037] The main beam 12 of the automatic fine-tuning mechanism is equipped with a power socket 6, a switch 7, a data interface socket 8, a status indicator light 9, and a wireless antenna mount 10. An external lithium battery powers the automatic fine-tuning mechanism through the power socket 6, and the switch 7 controls the automatic fine-tuning mechanism's power-on and power-off. The data interface socket 8 is used for receiving deviation values ​​and directions via wired connection, as well as for setting, testing, and debugging parameters of the automatic fine-tuning mechanism. The status indicator light 9 displays the current status of the device, such as whether it is in standby, working, or faulty. The wireless antenna mount 10 is used to mount a wireless communication antenna, which is internally connected to the circuit board 11. The circuit board 11 has an MCU module, embedded software, a wireless communication module, and a memory. It is used to receive and process deviation values ​​and directions, calculate the required rotation angle of the fine-tuning motor 17, control the fine-tuning motor 17, control the switching motor 29, store configuration parameters and correction parameters, manage power, manage status, and handle exceptions.

[0038] The automatic fine-tuning mechanism has a switching motor 29, a switching main gear 28, an adjusting main gear 18, a fine-tuning motor 17, an adjusting elevation driven gear 20, an adjusting plane driven gear 14, an elevation adjusting sleeve 23, an elevation adjusting screw head 24, a plane adjusting sleeve 30, and a plane adjusting screw head 25 installed at the far end of the main beam 12. The switching motor 29 is electrically connected to the circuit board 11. After receiving the adjustment data, the circuit board 11 drives the switching motor 29 to rotate. The switching motor 29 drives the switching main gear 28 to rotate. The switching main gear 28 meshes with the switching driven gear 22 and drives the switching driven gear 22 to rotate. A switching screw 15 is connected to the switching driven gear 22. The switching screw 15 meshes with the adjusting main gear 18. The fine-tuning motor 17 is connected above the adjusting main gear 18. The adjusting main gear 18 is screwed onto the adjusting main gear shaft 16. The switching screw 15 rotates with the switching driven gear. After the wheel 22 rotates, it drives the adjusting main gear 18 to move vertically up and down along the adjusting main gear shaft 16. The adjusting elevation slave gear 20 and the adjusting plane slave gear 14 are respectively located on both sides of the adjusting main gear 18. The adjusting main gear 18, which moves up and down, meshes with the adjusting elevation slave gear 20 or the adjusting plane slave gear 14 respectively. The adjusting elevation slave gear 20 is mounted on the elevation adjusting slave gear shaft 19. The adjusting elevation slave gear 20 is connected to the elevation adjusting sleeve 23 through the elevation adjusting flexible connecting rod 21. The adjusting plane slave gear 14 is connected to the plane adjusting sleeve 30 through the plane adjusting flexible connecting rod 13. The elevation adjusting sleeve 23 and the plane adjusting sleeve 30 are respectively provided with the elevation adjusting screw head 24 and the plane adjusting screw head 25 that are connected to them. The elevation adjusting screw head 24 and the plane adjusting screw head 25 are respectively connected to the elevation adjusting screw 27 and the plane adjusting screw.

[0039] When the invention moves to the crossbeam of the track frame, the host computer software 1 controls the vertical lifting motor 36 to rotate the vertical lifting screw 35, so that the automatic fine adjustment mechanism descends as a whole. The elevation adjustment sleeve 23 connected to the elevation adjustment flexible connecting rod 21 is fitted onto the elevation adjustment screw head 24, and the plane adjustment sleeve 30 connected to the plane adjustment flexible connecting rod 13 is fitted onto the plane adjustment screw head 25. When the host computer software 1 obtains the precise coordinates of the precision measuring prism 2 and calculates the plane and elevation deviation values, it wirelessly sends the deviation values, deviation directions, and adjustment order (whether to adjust the elevation deviation first or the plane deviation first) to the wireless communication antenna installed on the wireless antenna mount 10. After receiving the adjustment data, the circuit board 11 drives the switching motor 29 to rotate. The switching motor 29 drives the switching main gear 28 to rotate, and the switching main gear 28 drives the three switching slave gears 22 to rotate. The three switching screws 15 connected to the switching slave gears 22 also rotate accordingly, so that the adjusting main gear 18 moves vertically up and down on the main gear shaft 16 along the limiting groove on the adjusting main gear shaft 16, and meshes with the adjusting elevation slave gear 20 or the adjusting plane slave gear 14; the clamping device 31 is clamped on the track frame crossbeam. The embedded software on circuit board 11 calculates the required rotation angle and rotation direction of the elevation adjusting sleeve 23 and the plane adjusting sleeve 30 based on the elevation and plane adjusting screw pitch, gear ratio, clearance value, screw tightness error, deviation value, and deviation direction. It then drives the fine-tuning motor 17 to rotate, causing the elevation adjusting screw 27 and the plane adjusting screw to rotate and adjust the plane and elevation position of the rail to the design position.

[0040] The host computer software 1 continuously acquires the coordinates of the precision measuring prism 2, the data from the tilt sensor 37 and the track gauge sensor 38, and synchronously calculates the deviation value and direction. After completing one round of adjustment, if the deviation data is less than the allowable deviation value, the current track frame crossbeam has been adjusted to the correct position. The host computer software 1 controls the vertical lifting motor 36 to rotate the vertical lifting screw 35, causing the automatic fine-tuning mechanism to rise as a whole. The elevation adjusting sleeve 23 connected to the elevation adjusting flexible connecting rod 21 disengages from the elevation adjusting screw head 24, and the plane adjusting sleeve 30 connected to the plane adjusting flexible connecting rod 13 disengages from the plane adjusting screw head 25, moving the device to the next track frame crossbeam. After completing one round of adjustment, if the deviation data is greater than the allowable deviation, the above automatic fine-tuning process is repeated until the deviation value is less than the allowable deviation.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0042] This invention is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this invention shall be considered equivalent substitutions and shall be included within the scope of protection of this invention.

Claims

1. A track inspection trolley for precision track measurement with automatic fine adjustment, characterized in that: The system includes a track measuring trolley and automatic fine-tuning mechanisms mounted on both sides. The track measuring trolley's crossbeam is equipped with a precision measuring prism (2), an inclination sensor (37), and a track gauge sensor (38). An industrial computer mounted on the track measuring trolley's computer tray is loaded with host computer software (1). The host computer software (1) remotely controls the automatic total station via wireless communication, locks and tracks the precision measuring prism (2), and dynamically and continuously measures the coordinates of the precision measuring prism (2) and reads the data from the track measuring trolley's inclination sensor (37) and track gauge sensor (38). The host computer software (1) simultaneously calculates the horizontal and vertical deviations of the track at the current mileage position and transmits the deviation values ​​and directions wirelessly. The data is sent to the automatic fine-tuning mechanism installed on both sides of the track measuring trolley. The automatic fine-tuning mechanism controls its motor to rotate the sleeve to turn the fine-tuning screw according to the deviation value and deviation direction, thereby adjusting the track plane and elevation to the design position. The main beam (12) of the automatic fine-tuning mechanism is equipped with a switching motor (29), a switching main gear (28), an adjusting main gear (18), a fine-tuning motor (17), an elevation adjusting slave gear (20), an adjustment plane slave gear (14), an elevation adjusting sleeve (23), an elevation adjusting screw head (24), a plane adjusting sleeve (30), and a plane adjusting screw head (25). The switching motor (29) is electrically connected to the circuit board (11). After receiving the adjustment data, the circuit board (11) drives the switching motor. (29) Rotation: The switching motor (29) drives the switching master gear (28) to rotate. The switching master gear (28) meshes with the switching slave gear (22) and drives the switching slave gear (22) to rotate. A switching screw (15) is connected to the switching slave gear (22). The switching screw (15) meshes with the adjusting master gear (18). A fine-tuning motor (17) is connected above the adjusting master gear (18). The adjusting master gear (18) is screwed onto the adjusting master gear shaft (16). After the switching screw (15) rotates with the switching slave gear (22), it drives the adjusting master gear (18) to move vertically up and down along the adjusting master gear shaft (16). The adjusting elevation slave gear (20) and the adjusting plane slave gear (14) are also mentioned. The adjusting main gear (18) is located on both sides of the adjusting main gear (18) and moves up and down. It meshes with the adjusting elevation slave gear (20) or the adjusting plane slave gear (14). The adjusting elevation slave gear (20) is connected to the elevation adjusting sleeve (23) through the elevation adjusting flexible connecting rod (21). The adjusting plane slave gear (14) is connected to the plane adjusting sleeve (30) through the plane adjusting flexible connecting rod (13). The elevation adjusting sleeve (23) and the plane adjusting sleeve (30) are respectively provided with an elevation adjusting screw head (24) and a plane adjusting screw head (25) that are connected to them. The elevation adjusting screw head (24) and the plane adjusting screw head (25) are respectively connected to the elevation adjusting screw (27) and the plane adjusting screw.

2. The track inspection trolley for precision track measurement with automatic fine adjustment as described in claim 1, characterized in that: The automatic fine-tuning mechanism is connected to the track measuring trolley through the quick-connect plate (3). The quick-connect plate (3) has limit posts (32) on both sides and fastening screws at the four corners. The quick-connect plate (3) can be quickly installed and disassembled through the fastening screws.

3. The track inspection trolley for precision track measurement with automatic fine adjustment as described in claim 2, characterized in that: The quick-connect plate (3) is equipped with a linear guide rail (4) and a vertical lifting motor (36). The linear guide rail (4) is installed vertically. The near end of the main beam (12) of the automatic fine-tuning mechanism is connected to the linear guide rail (4) through a slider (5). The bottom of the near end of the main beam (12) of the automatic fine-tuning mechanism is equipped with a lead screw bearing seat (34), and the vertical lifting lead screw (35) is connected through the lead screw bearing seat (34). The other end of the vertical lifting lead screw (35) is connected to the vertical lifting motor (36). The vertical lifting motor (36) rotates the vertical lifting lead screw (35), thereby driving the automatic fine-tuning mechanism to rise or fall vertically along the linear guide rail (4).

4. The track inspection trolley for precision track measurement with automatic fine adjustment as described in claim 3, characterized in that: The host computer software (1) controls the vertical lifting motor (36) to rotate the vertical lifting screw (35), so that after the automatic fine adjustment mechanism is lowered as a whole, the elevation adjustment sleeve (23) connected to the elevation adjustment flexible connecting rod (21) is fitted onto the elevation adjustment screw head (24), and the plane adjustment sleeve (30) connected to the plane adjustment flexible connecting rod (13) is fitted onto the plane adjustment screw head (25). When the host computer software (1) obtains the precise coordinates of the precision measuring prism (2) and calculates the plane and elevation deviation values, it sends the deviation value, deviation direction and adjustment sequence to the wireless communication antenna installed on the wireless antenna mount (10) wirelessly. After the circuit board (11) receives the adjustment data, it drives the switching motor (29) to rotate.

5. The track inspection trolley for precision track measurement with automatic fine adjustment as described in claim 4, characterized in that: The host computer software (1) continuously obtains the coordinates of the precision measuring prism (2), the tilt sensor (37) and the track gauge sensor (38), and synchronously calculates the deviation value and deviation direction. After completing one round of adjustment, if the deviation data is less than the allowable deviation value, the current track frame crossbeam has been adjusted to the correct position. The host computer software (1) controls the vertical lifting motor (36) to rotate the vertical lifting screw (35), so that the automatic fine adjustment mechanism rises as a whole. The elevation adjustment sleeve (23) connected to the elevation adjustment flexible connecting rod (21) disengages from the elevation adjustment screw head (24), and the plane adjustment sleeve (30) connected to the plane adjustment flexible connecting rod (13) disengages from the plane adjustment screw head (25).

6. The track inspection trolley for precision track measurement with automatic fine adjustment as described in claim 3, characterized in that: The embedded software on the circuit board (11) calculates the required rotation angle and rotation direction of the elevation adjustment sleeve (23) and the plane adjustment sleeve (30) based on the pitch, gear ratio, clearance value, screw tightness error, deviation value and deviation direction of the elevation adjustment screw (27) and the plane adjustment screw. After driving the fine adjustment motor (17) to rotate, the elevation adjustment screw (27) and the plane adjustment screw rotate, thereby adjusting the track plane and elevation position to the design position.

7. The track inspection trolley for precision track measurement with automatic fine adjustment as described in any one of claims 1 to 6, characterized in that: The main beam (12) of the automatic fine-tuning mechanism is equipped with a power socket (6), a switch (7), a data interface socket (8), a status indicator (9), and a wireless antenna mount (10). An external lithium battery supplies power to the automatic fine-tuning mechanism through the power socket (6). The switch (7) is used to control the automatic fine-tuning mechanism to turn on and off. The data interface socket (8) is used to receive deviation values ​​and deviation directions in a wired manner, and to set, test, and debug parameters of the automatic fine-tuning mechanism. The status indicator (9) is used to display the current status of the device, including but not limited to standby status, working status, and whether there is a fault. The wireless antenna mount (10) is used to mount a wireless communication antenna, and the wireless antenna mount (10) is internally connected to the circuit board (11).

8. The track inspection trolley for precision track measurement with automatic fine adjustment as described in claim 7, characterized in that: The circuit board (11) has an MCU module, embedded software, a wireless communication module and a memory. The circuit board (11) is used to receive and process the deviation value and deviation direction, calculate the required rotation angle of the fine-tuning motor (17), control the fine-tuning motor (17), control the switching motor (29), store configuration parameters and correction parameters, power management, status management and exception handling.

9. The track inspection trolley for precision track measurement with automatic fine adjustment as described in claim 7, characterized in that: The main beam (12) of the automatic fine-tuning mechanism is made of carbon fiber rectangular tube, which reduces the overall weight of the automatic fine-tuning mechanism while ensuring strength.

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