A stress trend test trolley

Abstract

The application relates to a stress trend test trolley and relates to the technical field of railway track detection, which comprises a cross beam assembly, one end of the cross beam assembly is connected with a longitudinal beam assembly, the other end of the cross beam assembly is provided with an adjusting assembly, and the longitudinal beam assembly and the adjusting assembly are arranged on a railway track; the adjusting assembly comprises a bottom plate, the bottom plate is arranged on the inner surface of a cross beam frame of the cross beam assembly, two pull plates are arranged at one end of the bottom plate, a bearing seat is arranged between the two pull plates, a threaded rod is arranged on the bearing seat, a slide rail is arranged on the bottom plate in the length direction of the cross beam frame, a support plate is slidably arranged on the slide rail, a support is arranged on one side of the support plate, a first walking wheel is rotatably arranged on the support, the other end of the threaded rod is connected with the support, and a first spring is arranged on the threaded rod. The application can be adapted to railway tracks with different track gauge deviations, can ensure that the trolley moves stably along the track, and can realize the effect of efficient and accurate detection of the stress of the railway track.

Description

Technical Field

[0001] This application relates to the technical field of railway track inspection, and in particular to a stress trend testing trolley. Background Technology

[0002] In railway transportation systems, railway tracks, as the main load-bearing components, are subjected to the effects of train loads, temperature changes, geological subsidence, and other factors over long periods, making them prone to stress concentration and fatigue damage. If abnormal track stress is not detected in time, it may lead to track deformation, cracking, or even breakage, seriously threatening the safety of train operation. Currently, railway track stress testing is mainly conducted using stress trend testing trolleys. The fit between the trolley's running mechanism and the track surface directly affects the testing accuracy. The trolley needs to stably couple with the track surface through a probe module to collect stress signals. If the fit between the running wheels and the track is poor, the trolley is prone to bumps or lateral deviations during movement, leading to unstable coupling gaps between the probe module and the track surface. This results in distorted test data and an inability to accurately identify areas of track stress concentration. Most stress trend testing trolleys use running wheels with fixed spacing, which can only adapt to tracks with a single gauge. When facing track sections with slight gauge deviations, they cannot achieve stable fit by adjusting the running wheel positions, causing the equipment to easily deviate during movement. This not only affects the coupling accuracy between the stress detection probe and the track surface but may also cause the equipment to jam, interrupting the testing process. Consequently, the efficiency and accuracy of track stress testing are reduced, making it difficult to meet the high-frequency and precise requirements of daily railway track inspections. Utility Model Content

[0003] To address the issue that a stress trend testing trolley with fixed-spaced wheels cannot achieve stable contact by adjusting the wheel positions, thus reducing the efficiency and accuracy of track stress detection, this application provides a stress trend testing trolley.

[0004] This application provides a stress tendency testing vehicle, which adopts the following technical solution: A stress tendency testing trolley for detecting railway tracks includes a crossbeam assembly, a longitudinal beam assembly, and an adjustment assembly. One end of the crossbeam assembly is detachably connected to the longitudinal beam assembly, and the other end is detachably fitted with the adjustment assembly. Both the longitudinal beam assembly and the adjustment assembly are movably mounted on the railway track. The adjustment assembly includes a base plate, which is installed on the inner surface of the crossbeam frame of the crossbeam assembly. Two pull plates are provided at the end of the base plate away from the railway track, and a bearing seat is installed between the two pull plates. A threaded rod is installed on the bearing seat. A slide rail is installed along the length of the crossbeam frame at the end of the base plate near the railway track. A support plate is slidably arranged on the slide rail. A bracket is installed on the side of the support plate near the railway track. A first traveling wheel for traveling on the railway track is rotatably provided on the bracket. The other end of the threaded rod is connected to the bracket, and a first spring is sleeved on the threaded rod.

[0005] By adopting the above technical solution, the detachable connection of the crossbeam assembly, longitudinal beam assembly, and adjustment assembly facilitates the disassembly, transportation, and on-site assembly of the device. The longitudinal beam assembly and adjustment assembly move together on the track, providing a stable foundation for the inspection work. In the adjustment assembly, the base plate provides a stable mounting carrier for the pull plate, bearing seat, and slide rail. The pull plate fixes the position of the bearing seat, keeping the threaded rod stable when it rotates. When the operator rotates the threaded rod, it can push the bracket to drive the support plate to slide along the slide rail, thereby adjusting the lateral position of the first traveling wheel to adapt to tracks with different gauge deviations. The first spring plays a buffering role during the pushing of the threaded rod, avoiding damage caused by hard contact between the first traveling wheel and the track. At the same time, on uneven track sections, the first spring can compensate for vibration, ensuring that the first traveling wheel fits the track surface and ensuring the smooth movement of the trolley. Optionally, a slider is installed on one side of the support plate, the slider is slidably mounted on the slide rail, handles are installed on both sides of the support plate, a second spring is sleeved on the handle, a connecting rod is installed at the end of the crossbeam, and the other end of the second spring is connected to the connecting rod. By adopting the above technical solution, the cooperation between the slider and the slide rail makes the position adjustment of the first traveling wheel smoother, avoiding the decrease in adjustment accuracy caused by the support plate jamming; the handle provides a force point for the operator to manually assist in adjusting the position of the support plate. In special scenarios where the adjustment of the threaded rod is inconvenient, the support plate can be directly pushed by the handle, improving the flexibility of operation; the second spring connects the handle and the connecting rod. After the support plate is manually pushed, it can be pulled to automatically reset, reducing the manual reset operation steps. At the same time, during the movement of the trolley, the second spring can buffer the lateral sway of the support plate and enhance the stability of the first traveling wheel's contact with the track. Optionally, a first guide wheel is installed on one end of the bracket near the bearing seat, and the first guide wheel is slidably disposed on the side of the railway track. By adopting the above technical solution, the first guide wheel contacts the side of the railway track, playing a lateral guiding role when the trolley moves, limiting the lateral deviation of the first traveling wheel, preventing the trolley from deviating due to track overturning or uneven track surface, and ensuring that the trolley moves in a straight line along the track; at the same time, the rolling contact of the first guide wheel reduces friction loss with the side of the track, extends the service life of the component, ensures the guiding stability in long-term testing work, and indirectly improves the accuracy of stress testing data. Optionally, the longitudinal beam assembly includes a longitudinal beam frame, a probe module, a first traveling module, and a second traveling module. The first traveling module is installed at one end of the longitudinal beam frame, and the second traveling module is provided at the other end. Both the first and second traveling modules are movably mounted on the railway track. The probe module is installed between the first and second traveling modules. A quick-connect water pipe bracket is installed on the longitudinal beam frame near the probe module, and a cable box is provided on the longitudinal beam frame. By adopting the above technical solution, the longitudinal beam frame provides installation support for the probe module, the first walking module, and the second walking module, ensuring that the positions of each component are relatively fixed and that the relative position of the probe module and the track is stable during testing. The first and second walking modules provide walking power and support at both ends of the longitudinal beam frame, enabling the longitudinal beam assembly to move smoothly on the track. The probe module is located between the two walking modules, which can prevent the vibration generated by the movement of the walking modules from being directly transmitted to the probe, reducing interference with the test data. The quick-connect water pipe bracket facilitates the connection of water pipes, providing a stable water source for the water coupling process of the probe module. The cable box is used to store the test cables, preventing the cables from becoming tangled and affecting operation or being damaged by track components, thus improving the overall neatness and safety of the device. Optionally, the probe module includes a probe base, an ultrasonic transducer, and a probe installed below the longitudinal beam frame. The ultrasonic transducer is located on the side of the probe base near the railway track, and the probe is mounted on the probe base. By adopting the above technical solution, the probe mount provides installation and positioning for the ultrasonic transducer and the probe. The ultrasonic transducer is close to the track surface and can efficiently transmit and receive ultrasonic signals to detect the internal stress of the track. The probe is used for signal transmission and processing. The two work together to complete the acquisition of stress data. Optionally, the first traveling module includes a first traveling frame and a second traveling wheel for moving on the railway track. The first traveling frame is installed below the longitudinal beam frame, and the second traveling wheel is rotatably mounted on the first traveling frame. A second guide wheel for moving on the side of the railway track is provided on one side of the first traveling frame. The second traveling module includes a second traveling frame and a third traveling wheel for moving on the railway track. The second traveling frame is installed below the longitudinal beam frame, and the third traveling wheel is rotatably mounted on the second traveling frame. A third guide wheel is provided on one side of the second traveling frame and is movably mounted on the side of the railway track. The third traveling wheel is connected to a mileage encoder. By adopting the above technical solution, the first and second traveling frames provide installation supports for the second and third traveling wheels, respectively, ensuring that the traveling wheels roll stably on the track. The second and third traveling wheels work together to provide continuous traveling power for the longitudinal beam assembly, ensuring that the trolley can continuously detect along the track. The second and third guide wheels provide lateral guidance at both ends of the longitudinal beam frame, further enhancing the straightness of the trolley's movement and preventing deviation. The mileage encoder connected to the third traveling wheel can collect the trolley's mileage data in real time, and associate the mileage information with the stress detection data, making it convenient for operators to accurately locate the position of track stress anomalies, providing accurate position references for subsequent track maintenance, and improving the practicality of the detection work. Optionally, the crossbeam assembly includes a crossbeam frame and a pushing module mounted on the crossbeam frame. A crossbeam positioning block is provided in one end of the crossbeam frame, and a crossbeam connecting plate is installed in one end of the crossbeam frame. A longitudinal beam positioning block and a longitudinal beam connecting plate are installed on one side of the longitudinal beam frame of the longitudinal beam assembly. The longitudinal beam positioning block is inserted into the crossbeam positioning block. The longitudinal beam connecting plate is connected to the crossbeam connecting plate, and a rotating locking member is installed at both ends of the crossbeam connecting plate. One side of the rotating locking member passes through the crossbeam connecting plate, the longitudinal beam connecting plate, and the longitudinal beam frame so that the crossbeam frame and the longitudinal beam frame are detachably connected. By adopting the above technical solution, the crossbeam frame provides an installation foundation for the push module and adjustment components. Simultaneously, the interlocking of the crossbeam positioning block and the longitudinal beam positioning block enables rapid positioning of the crossbeam and longitudinal beam components, ensuring accurate connection and preventing instability of the trolley due to misalignment. The connection between the crossbeam connecting plate and the longitudinal beam connecting plate further enhances the stability of the connection between the two components. The rotating locking mechanism allows for easy locking or unlocking with a simple rotation, facilitating quick disassembly and assembly of the crossbeam and longitudinal beam components by operators, improving the efficiency of equipment transportation and on-site commissioning. The detachable connection also facilitates the individual replacement of damaged crossbeam or longitudinal beam components, reducing maintenance costs. Optionally, the pushing module includes a mounting base, a rotating base, and a fixed base mounted on the crossbeam frame. The rotating base is disposed on the fixed base and has an adjusting rod. The adjusting rod has an adjusting groove along its length. One end of the mounting base is fixedly connected to a sleeve rod. The adjusting rod slides into the sleeve rod. A limiting rod for sliding within the adjusting groove is installed at the bottom of the sleeve rod. A tightening pin is provided at the top of the sleeve rod. The tightening pin passes through the sleeve rod and abuts against the adjusting rod for positioning. The other end of the mounting base is connected to several push rods. A shelf for placing a host computer is rotatably disposed on each push rod. A damping hinge is provided between the shelf and the push rod. By adopting the above technical solution, the fixed seat provides installation support for the rotating seat, which can drive the adjusting rod to rotate, making it convenient for operators to adjust the pushing direction of the push rod according to the space at the work site (such as obstacles beside the track), thus improving operational flexibility. The sliding fit between the adjusting rod and the sleeve rod allows the state of the push rod and the rotating seat to be changed by adjusting their relative positions, facilitating disassembly and storage. The limiting rod slides in the adjusting groove, limiting the relative rotation of the adjusting rod and the sleeve rod, ensuring the stability of the push rod direction. The locking pin locks the position after adjustment to prevent the push rod from loosening during use. The shelf is used to place the host computer, allowing operators to view stress detection data in real time. The damping hinge can adjust the tilt angle of the shelf, making it convenient for operators to view the screen. At the same time, the damping hinge can keep the shelf in a fixed position, preventing the host computer from slipping due to vibration of the trolley, thus improving operational safety and convenience. Optionally, a handle is provided on one end of the crossbeam frame near the adjustment component, and several support frames for placing water tanks are rotatably provided on the crossbeam frame. By adopting the above technical solution, the handle provides an auxiliary force point for the operator. When the trolley needs to be manually pulled (such as on an uphill section of the track or when the walking module temporarily fails), the operator can pull the trolley with less effort by using the handle, thus improving the ease of operation. The support frame is used to place the water tank, providing a stable water source for the probe module. The rotating support frame can be adjusted according to the size of the water tank or the site space, making it convenient to put the water tank in and out. At the same time, the support frame can fix the position of the water tank, preventing the water tank from shaking and tipping over when the trolley moves, ensuring a stable water supply during the testing process, and reducing the problem of testing interruption caused by water supply interruption.

[0006] In summary, this application includes at least one of the following beneficial technical effects: 1. The device achieves flexible adjustment of the lateral position of the first traveling wheel by adjusting the components. With the guidance of the first guide wheel, second guide wheel and third guide wheel of the longitudinal beam assembly, it can adapt to railway tracks with different track gauge deviations, solve the problem of poor adaptability of traditional fixed-spacing traveling wheels, and at the same time ensure the smooth movement of the trolley, reduce interference of detection data, improve the accuracy and stability of stress detection, and meet the precision requirements of daily inspection of railway tracks. 2. The detachable connection design of the crossbeam assembly and the longitudinal beam assembly, combined with the adjustable length and direction of the push rod of the push module, facilitates the disassembly and transportation of the device, on-site assembly and flexible operation, and adapts to different working scenarios and operator needs. Attached Figure Description

[0007] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the adjustment component in an embodiment of this application; Figure 3 This is a structural schematic diagram of the longitudinal beam assembly in an embodiment of this application; Figure 4 This is an exploded view of the detachable connection between the crossbeam assembly and the longitudinal beam assembly in the embodiments of this application; Figure 5 This is a schematic diagram of the implementation module in an embodiment of this application; Figure 6 yes Figure 5 Exploded view.

[0008] Explanation of reference numerals in the attached figures: 1. Crossbeam assembly; 11. Crossbeam frame; 111. Crossbeam positioning block; 112. Crossbeam connecting plate; 113. Rotary locking component; 114. Handle; 115. Support frame; 12. Pushing module; 121. Fixed seat; 122. Mounting seat; 123. Sleeve rod; 1231. Limiting rod; 1232. Top-tightening pin; 124. Rotary seat; 1241. Locking pin; 125. Adjusting rod; 1251. Adjusting groove; 126. Push rod; 127. Shelf; 2. Longitudinal beam assembly; 21. Longitudinal beam frame; 211. Longitudinal beam positioning block; 212. Longitudinal beam connecting plate; 22. Probe module; 221. Probe 222. Probe; 23. First traveling module; 231. First traveling frame; 232. Second traveling wheel; 233. Second guide wheel; 24. Second traveling module; 241. Second traveling frame; 242. Third traveling wheel; 243. Third guide wheel; 244. Mileage encoder; 25. Water pipe quick-connect bracket; 26. Cable box; 3. Adjustment assembly; 31. Base plate; 32. Pull plate; 321. Bearing seat; 33. Threaded rod; 34. Slide rail; 35. Slider; 36. Support plate; 37. Handle; 38. Bracket; 381. First traveling wheel; 382. First guide wheel; 4. Railway track. Detailed Implementation

[0009] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0010] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0011] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0012] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0013] This application discloses a stress tendency testing trolley for detecting railway tracks, as shown in the embodiments below. Figure 1 and Figure 2 The stress trend testing trolley includes a crossbeam assembly 1, a longitudinal beam assembly 2, and an adjustment assembly 3. One end of the crossbeam assembly 1 is detachably connected to the longitudinal beam assembly 2, and the other end is detachably equipped with the adjustment assembly 3. Both the longitudinal beam assembly 2 and the adjustment assembly 3 are movably mounted on the railway track 4. Adjustment component 3 includes a base plate 31, which is installed on the inner surface of the crossbeam frame 11 of crossbeam component 1. Two pull plates 32 are provided at the end of the base plate 31 away from the railway track 4. A bearing seat 321 is installed between the two pull plates 32. A threaded rod 33 is installed on the bearing seat 321. A slide rail 34 is installed along the length of the crossbeam frame 11 at the end of the base plate 31 near the railway track 4. A support plate 36 is slidably provided on the slide rail 34. A bracket 38 is installed on the side of the support plate 36 near the railway track 4. A first traveling wheel 381 for traveling on the railway track 4 is rotatably provided on the bracket 38. The other end of the threaded rod 33 is connected to the bracket 38. A first spring is sleeved on the threaded rod 33.

[0014] In this stress trend testing trolley, one end of the crossbeam assembly 1 is detachably connected to the longitudinal beam assembly 2, while the other end provides an installation base for the adjustment assembly 3. It also supports components such as the push module 12, enabling the connection and integration of the trolley's core components. The detachable design facilitates the transportation, assembly, and debugging of the equipment at the testing site on the railway track 4. The longitudinal beam assembly 2 carries the probe module 22 and other testing components, moving along the railway track 4 via its own walking structure. This provides a stable longitudinal movement platform for stress detection. Simultaneously, it works with the crossbeam assembly 1 to form a complete trolley frame, ensuring a stable relative position between the testing components and the track. This allows the probe module 22 of the longitudinal beam assembly 2 to move continuously along the track with the trolley, achieving uninterrupted detection of track stress.

[0015] In the adjustment assembly 3, the base plate 31 provides installation positioning for the pull plate 32 and the slide rail 34. The symmetrically arranged pull plates 32 form the installation support structure for the bearing seat 321. Through the fixing action of the two pull plates 32, the bearing seat 321 is stably limited in the preset position, preventing the bearing seat 321 from shifting or shaking when the threaded rod 33 rotates. The bearing seat 321 is used to support the rotation of the threaded rod 33, reducing the frictional resistance when the threaded rod 33 rotates, making it easier for the operator to adjust the position of the first traveling wheel 381, and improving the ease of operation. At the same time, the bearing seat 321 plays a radial positioning role for the threaded rod 33, ensuring that the threaded rod 33 rotates only along its own axis, and ensuring the accuracy of the force transmission when the threaded rod 33 pushes the bracket 38.

[0016] The threaded rod 33 converts the operator's rotational force into a linear force that pushes the bracket 38 to slide along the slide rail 34, thereby adjusting the lateral position of the first traveling wheel 381. The operator can precisely control the movement distance of the first traveling wheel 381 by controlling the number of rotations of the threaded rod 33, adapting to tracks with different gauge deviations. The screw drive structure has a self-locking function, preventing the bracket 38 from automatically shifting due to vibration after adjustment, ensuring the stability of the first traveling wheel 381's position and avoiding the impact of the first traveling wheel 381's offset on detection accuracy during the testing process. Furthermore, multiple positioning nuts can be installed on the threaded rod 33 to further fix the position of the bracket 38.

[0017] The slide rail 34 provides a directional sliding track for the support plate 36, restricting the movement direction of the support plate 36 and ensuring that the support plate 36 moves only laterally (in the track gauge adjustment direction), thereby enabling the first traveling wheel 381 to accurately contact the track surface. The support plate 36 transmits the thrust of the threaded rod 33 to the bracket 38, simultaneously driving the bracket 38 and the first traveling wheel 381 to move synchronously along the slide rail 34, ensuring that the first traveling wheel 381 is precisely adjusted in position as the support plate 36 moves; the bracket 38 supports the rotation of the first traveling wheel 381, stably limiting the first traveling wheel 381 at a preset height, ensuring good contact between the first traveling wheel 381 and the track surface, ensuring the stability of the first traveling wheel 381 when rolling on the track, reducing the radial runout of the traveling wheel, and at the same time, the bracket 38 transmits the lateral movement force of the support plate 36, driving the first traveling wheel 381 to adjust its position.

[0018] The first traveling wheel 381 drives the trolley to move along the track through its own rolling motion, realizing the smooth movement of the trolley along the track. At the same time, under the action of the adjustment component 3, it can adapt to tracks with different track gauges by adjusting its position, which solves the limitation of traditional fixed-gap traveling wheels that can only adapt to a single track gauge and expands the detection application range of the trolley.

[0019] One end of the first spring abuts against the bearing seat 321, and the other end abuts against the bracket 38. When the threaded rod 33 pushes the bracket 38, it compresses and stores energy, and releases elastic force to assist the bracket 38 in resetting when the threaded rod 33 rotates in the opposite direction. At the same time, it plays a role in buffering vibration when the trolley is moving, avoiding hard contact between the bracket 38 and the bearing seat 321, and reducing component wear. The first spring's assisting reset function makes it easier for the operator to adjust the threaded rod 33 in the opposite direction, improving the ease of operation. Meanwhile, the preload of the spring ensures the fit between the first traveling wheel 381 and the rail surface. Even when the track is slightly uneven, the extension and contraction of the first spring can ensure the continuous contact between the first traveling wheel 381 and the rail surface, improving the stability of the trolley.

[0020] The stress trend testing trolley forms a stable frame for the testing trolley equipment through the coordinated support of the crossbeam assembly 1 and the longitudinal beam assembly 2. The longitudinal beam assembly 2 carries the probe module 22 to realize track stress detection. At the same time, the lateral position of the first traveling wheel 381 can be flexibly adjusted by the adjustment assembly 3 to adapt to railway tracks 4 with different track gauge deviations, ensuring that the trolley moves smoothly along the track, thereby realizing efficient and accurate detection of stress on the railway track 4, solving the problems of poor adaptability and low detection accuracy of traditional detection equipment.

[0021] Specifically, the crossbeam assembly 1 and the longitudinal beam assembly 2 form a rigid frame to prevent structural deformation when the trolley moves; the adjustment assembly 3 ensures that the first traveling wheel 381 is stably attached to the rail surface, reducing walking bumps; at the same time, the helical drive of the threaded rod 33 and the buffering effect of the first spring ensure the stability of the position of the first traveling wheel 381 and the smooth movement of the trolley, indirectly improving the coupling accuracy between the probe module 22 and the rail surface, reducing the distortion of detection data, and making the track stress detection results more reliable.

[0022] A slider 35 is mounted on one side of the support plate 36, and the slider 35 is slidably mounted on the slide rail 34. Handles 37 are mounted on both sides of the support plate 36, and a second spring is fitted onto each handle 37. A connecting rod is mounted at the end of the crossbeam frame 11, and the other end of the second spring is connected to the connecting rod. The slider 35 is embedded in the groove of the slide rail 34, forming a sliding fit with the slide rail 34. This reduces the sliding friction resistance between the support plate 36 and the slide rail 34, making it easier for the operator to adjust the position of the first traveling wheel 381 and improving the smoothness of the adjustment operation. The slider 35 restricts the movement direction of the support plate 36, ensuring that the support plate 36 moves only along the length direction of the slide rail 34 (the track gauge adjustment direction), preventing lateral deviation or jamming during sliding, ensuring that the traveling wheel accurately contacts the rail surface of the railway track 4, avoiding incomplete contact between the traveling wheel and the rail surface due to adjustment trajectory deviation, and reducing data distortion caused by trolley vibration during the testing process.

[0023] Handle 37 provides the operator with a direct force application point. The position of the support plate 36 can be adjusted by pulling or pushing handle 37. When it is inconvenient to adjust the threaded rod 33, the position of the traveling wheel can be quickly adjusted directly through handle 37, which improves the operational flexibility of adjustment component 3. Especially in complex sections such as turnout area and curve section of railway track 4, the operator can quickly correct the position of the traveling wheel through handle 37 to avoid equipment jamming and interruption of the testing process.

[0024] One end of the second spring abuts against the end of the handle 37, and the other end is fixedly connected to the connecting rod on the crossbeam frame 11. When the support plate 36 moves the handle 37, it stores elastic potential energy through its own tension or compression. After the external force is removed, it releases the elastic potential energy, causing the support plate 36 to reset, thus realizing the automatic reset function of the support plate 36. After the operator adjusts the position of the traveling wheel through the handle 37, releasing the handle 37 will return the support plate 36 to its initial position without manual reset, reducing operation steps and improving detection efficiency. At the same time, during the movement of the trolley, the second spring can buffer the lateral vibration of the support plate 36 caused by uneven track, preventing the traveling wheel from shifting laterally due to vibration, ensuring the continuous contact between the traveling wheel and the track surface, and further improving the stability of the detection data. The connecting rod is the fixed support point of the second spring. Through its rigid structure, it provides a stable tensile or compressive bearing base for the second spring, preventing the second spring from shifting position during extension and retraction.

[0025] A first guide wheel 382 is installed at one end of the bracket 38 near the bearing seat 321. The first guide wheel 382 is slidably disposed on the side of the railway track 4. The first guide wheel 382 contacts the side of the railway track 4 through the rotation of the wheel body, providing lateral guidance for the movement of the trolley, limiting the lateral deviation of the trolley outside the extension direction of the track, and converting the sliding friction with the side of the track into rolling friction, making the trolley move more smoothly along the track and reducing the pushing resistance. The bracket 38 is the mounting carrier of the first guide wheel 382, ​​which stably supports the first guide wheel 382 at a preset height and position, ensuring that the guide wheel maintains a suitable contact force with the side of the railway track 4.

[0026] Reference Figure 1 and Figure 3 The longitudinal beam assembly 2 includes a longitudinal beam frame 21, a probe module 22, a first traveling module 23, and a second traveling module 24. The first traveling module 23 is mounted on one end of the longitudinal beam frame 21, and the second traveling module 24 is mounted on the other end. Both the first traveling module 23 and the second traveling module 24 are movable on the railway track 4. The probe module 22 is installed between the first traveling module 23 and the second traveling module 24. A quick-connect pipe bracket 25 is mounted on the longitudinal beam frame 21 near the probe module 22, and a cable box 26 is also mounted on the longitudinal beam frame 21. The longitudinal beam frame 21 provides a stable mounting platform for the probe module 22, the first traveling module 23, the second traveling module 24, the quick-connect pipe bracket 25, and the cable box 26. The frame structure of the longitudinal beam frame 21 provides sufficient structural strength to withstand vibration and external impact during the testing process, preventing component deformation and providing structural support for long-term stable testing.

[0027] The probe module 22 is used to transmit detection signals and receive stress-related signals from the track, converting the signals into processable data to provide raw detection basis for judging the track stress state. The probe module 22 is installed between the two traveling modules to reduce the interference of vibrations generated during the movement of the traveling modules on the detection signals, improve the accuracy of the detection data, and avoid signal distortion caused by vibration.

[0028] The first traveling module 23 contacts the railway track 4 and generates rolling motion, providing power support and travel guidance for the longitudinal beam assembly 2 to move along the track. At the same time, it works with the second traveling module 24 to maintain the balance and stability of the longitudinal beam assembly 2 on the track, so that the longitudinal beam assembly 2 can still maintain stable movement in uneven or curved sections of the track, reduce bumps, ensure the continuity of the detection process of the probe module 22, and avoid detection interruption due to unstable movement.

[0029] The quick-connect bracket 25 for water pipes provides a fast connection and secure fixation mechanism, allowing operators to quickly connect external water supply lines to the probe module 22 (some detections require water coupling). This ensures a stable supply of the water coupling medium required by the probe module 22, prevents abnormal detection data due to water supply interruptions, and guarantees the continuity of the detection process. It also limits the connection of the water pipe to prevent it from shaking or falling off.

[0030] The cable box 26 is a structure for storing and protecting the test cables. It is used to organize the connecting cables between the probe module 22 and the host computer, power supply and other equipment, so as to avoid the interference of messy cables to the trolley moving parts or the probe module 22. At the same time, it reduces the safety risk of operators tripping or accidentally touching the cables, and improves the safety and standardization of the test site.

[0031] The probe module 22 includes a probe base 221 installed below the longitudinal beam frame 21, an ultrasonic transducer, and a probe 222. The ultrasonic transducer is positioned on the side of the probe base 221 closest to the railway track 4, and the probe 222 is mounted on the probe base 221. The probe base 221 provides the mounting foundation for the ultrasonic transducer and the probe 222. The ultrasonic transducer converts electrical energy into ultrasonic signals and transmits them into the railway track 4. Simultaneously, it receives ultrasonic signals reflected back from inside the track and converts them into electrical signals, which are then transmitted to the probe 222 to capture characteristic information such as stress concentration and microcracks inside the track. The probe 222 receives the electrical signals transmitted by the ultrasonic transducer, performs preliminary amplification and filtering on the signals to remove interference noise, and then transmits the processed signals to the host computer. This achieves effective transmission and preliminary optimization of the detection data, facilitating real-time monitoring of the track stress state by operators, timely detection of abnormalities, and avoiding detection delays caused by data transmission latency.

[0032] The first traveling module 23 includes a first traveling frame 231 and a second traveling wheel 232 for moving on the railway track 4. The first traveling frame 231 is installed below the longitudinal beam frame 21, and the second traveling wheel 232 is rotatably mounted on the first traveling frame 231. A second guide wheel 233 for moving on the side of the railway track 4 is provided on one side of the first traveling frame 231. The first traveling frame 231 provides a mounting carrier for the second traveling wheel 232 and the second guide wheel 233, and at the same time transfers the weight of the longitudinal beam assembly 2 to the second traveling wheel 232, ensuring a rigid connection between the traveling module and the longitudinal beam frame 21 and maintaining the relative position stability of each component.

[0033] The second traveling wheel 232 is in direct contact with the rail surface of the railway track 4. Through its own rolling motion, it converts the pushing force of the operator or the power of the equipment into the moving power of the first traveling module 23 along the track, bearing part of the weight of the longitudinal beam assembly 2, and enabling the trolley to travel along the track. The second guide wheel 233 is in contact with the side of the railway track 4. Through its own rolling motion, it limits the lateral displacement of the first traveling module 23 and guides the second traveling wheel 232 to move linearly along the track surface, preventing the traveling module from deviating from the track direction. This indirectly ensures the coupling accuracy between the probe module 22 and the track surface and avoids affecting the detection data due to traveling deviation.

[0034] The second traveling module 24 includes a second traveling frame 241 and a third traveling wheel 242 for moving on the railway track 4. The second traveling frame 241 is installed below the longitudinal beam frame 21, and the third traveling wheel 242 is rotatably mounted on the second traveling frame 241. A third guide wheel 243 is provided on one side of the second traveling frame 241 and is movably mounted on the side of the railway track 4. The third traveling wheel 242 is connected to a mileage encoder 244. The second traveling frame 241 provides an installation reference for the third traveling wheel 242, the third guide wheel 243 and the mileage encoder 244, and at the same time bears part of the weight transmitted by the longitudinal beam assembly 2, ensuring that the components in the module maintain the preset relative positions and realizing the coordination of traveling, guiding and mileage detection functions.

[0035] The third traveling wheel 242 is in direct contact with the rail surface of the railway track 4, bearing the weight of the longitudinal beam assembly 2 through rolling motion. Together with the second traveling wheel 232 of the first traveling module 23, it drives the trolley to move along the track, simultaneously causing the mileage encoder 244 to rotate synchronously, achieving synchronization between traveling motion and mileage counting. The third guide wheel 243 rolls in contact with the side of the railway track 4, limiting the lateral displacement of the second traveling module 24 and guiding the third traveling wheel 242 to move linearly along the rail surface. Simultaneously, it works with the second guide wheel 233 of the first traveling module 23 to form a double guide, enhancing the overall stability of the trolley's trajectory.

[0036] The odometer encoder 244 operates synchronously with the rotation of the third traveling wheel 242, converting the mechanical rotation of the third traveling wheel 242 into odometer data in the form of electrical signals. It records the distance the trolley travels along the track in real time, marking the corresponding track position information for the detection data. Operators can use the odometer data to locate the specific location of stress anomaly areas, and it also facilitates the planning of detection paths, improving the practicality of the detection work.

[0037] Reference Figure 1 and Figure 4 The crossbeam assembly 1 includes a crossbeam frame 11 and a push module 12 mounted on the crossbeam frame 11. A crossbeam positioning block 111 is provided in one end of the crossbeam frame 11, and a crossbeam connecting plate 112 is installed in one end of the crossbeam frame 11. The longitudinal beam assembly 2 has a longitudinal beam positioning block 211 and a longitudinal beam connecting plate 212 installed on one side of the longitudinal beam frame 21. The longitudinal beam positioning block 211 is inserted into the crossbeam positioning block 111. The longitudinal beam connecting plate 212 is connected to the crossbeam connecting plate 112, and both ends of the crossbeam connecting plate 112 are equipped with rotating locking parts 113. One side of the rotating locking part 113 passes through the crossbeam connecting plate 112, the longitudinal beam connecting plate 212 and the longitudinal beam frame 21 so that the crossbeam frame 11 and the longitudinal beam frame 21 are detachably connected.

[0038] The crossbeam frame 11 provides an installation base for the pushing module 12, the crossbeam positioning block 111, and the crossbeam connecting plate 112, bearing the weight of the adjustment assembly 3. Simultaneously, through its connection with the longitudinal beam frame 21, it integrates the crossbeam assembly 1 and the longitudinal beam assembly 2 into a complete trolley structure, maintaining the relative stability of each component. The pushing module 12 provides a force application point for the operator, facilitating the movement of the entire trolley along the railway track 4, reducing physical exertion during prolonged operations, improving the efficiency of inspection work, and adapting to the needs of long-distance inspection of the railway track 4.

[0039] The crossbeam positioning block 111 is a positioning structure that cooperates with the longitudinal beam positioning block 211. Through a pre-set slot, it provides a precise insertion space for the longitudinal beam positioning block 211, achieving preliminary positioning before the crossbeam frame 11 and the longitudinal beam frame 21 are connected. This ensures that the crossbeam frame 11 and the longitudinal beam frame 21 can be quickly aligned during connection, reducing positional deviations during the docking process and improving component installation efficiency. The crossbeam connecting plate 112 cooperates with the longitudinal beam connecting plate 212, providing an installation channel for the rotating locking component 113 through bolt holes or connecting holes. This transmits the connecting force of the crossbeam frame 11 to the longitudinal beam frame 21, achieving a rigid connection between the two.

[0040] The longitudinal beam positioning block 211 is compatible with the transverse beam positioning block 111 and is inserted into the transverse beam positioning block 111 by plugging. Together with the transverse beam positioning block 111, it achieves precise alignment of the longitudinal beam frame 21 and the transverse beam frame 11, limiting their relative displacement in the horizontal direction. The longitudinal beam connecting plate 212 and the transverse beam connecting plate 112 are fitted together, providing a through channel for the rotary locking member 113. Together with the transverse beam connecting plate 112, they bear the locking force of the rotary locking member 113, tightly connecting the longitudinal beam frame 21 and the transverse beam frame 11, ensuring that the connection structure remains stable during the vibration of the trolley movement.

[0041] The rotating locking component 113 passes through the crossbeam connecting plate 112, the longitudinal beam connecting plate 212, and the longitudinal beam frame 21 through a rotational action. It locks the crossbeam frame 11 and the longitudinal beam frame 21 with a threaded or snap-fit ​​structure, realizing a detachable connection between the two. At the same time, it releases the lock when rotating in the opposite direction, which facilitates component disassembly. This enables quick assembly and disassembly of the crossbeam frame 11 and the longitudinal beam frame 21, simplifies the transportation, storage, and maintenance process of the trolley, and solves the problem of inconvenient assembly and disassembly of traditional fixed connection methods. In the locked state, it can provide sufficient preload to prevent the connection from loosening, ensure the rigidity of the overall structure of the trolley during movement, and avoid detection deviations caused by loose connections.

[0042] Reference Figure 1 , Figure 5 and Figure 6 The push module 12 includes a mounting base 122, a rotating base 124, and a fixed base 121 mounted on the crossbeam frame 11. The rotating base 124 is mounted on the fixed base 121 and has an adjusting rod 125. The adjusting rod 125 has an adjusting groove 1251 along its length. One end of the mounting base 122 is fixedly connected to a sleeve rod 123. The adjusting rod 125 slides into the sleeve rod 123. The bottom of the sleeve rod 123 is equipped with a tool for adjusting... The limiting rod 1231, which is slidably arranged in the slot 1251, is fixed or released by the sleeve rod 123 to adjust the rod 125. The top of the sleeve rod 123 is provided with a tightening pin 1232, which passes through the sleeve rod 123 and abuts against the adjusting rod 125 for positioning. The other end of the mounting base 122 is connected to several push rods 126. A shelf 127 for placing the host computer is rotatably arranged on the push rod 126. A damping hinge is provided between the shelf 127 and the push rod 126.

[0043] The fixed base 121 provides a fixed mounting platform for the rotating base 124, restricting its axial displacement and allowing it to rotate only around its own axis. Simultaneously, it transfers the weight of the pushing module 12 to the crossbeam frame 11, ensuring overall structural stability. The rotating base 124 can rotate around the fixed base 121 to adjust its angle, providing a rotatable mounting base for the adjusting rod 125. This allows the adjusting rod 125 to change its orientation with the rotating base 124, thus achieving flexible adjustment of the pushing direction. Operators can rotate the adjusting rod 125 according to the track environment (such as curves or obstacles) to select a suitable pushing position, avoiding limitations in pushing stability due to restricted operating posture and improving operational adaptability. A locking pin 1241 is installed on the rotating base 124. After adjusting the angle of the rotating base 124, tightening the locking pin 1241 causes its end to press against the fixed base 121, fixing the pushing direction of the trolley.

[0044] The adjustment groove 1251 of the adjustment rod 125 is configured to cooperate with the limiting rod 1231. The adjustment groove 1251 provides the sliding trajectory and positioning point for the limiting rod 1231. The state adjustment of the rotating seat 124 is realized by the relative sliding of the adjustment rod 125 and the sleeve rod 123. The fixing and loosening of the rotating seat 124 can be controlled. When the limiting rod 1231 slides in the adjustment groove 1251, the rotating seat 124 can rotate freely to adjust the folding angle, which is convenient for storing the push module 12. When the limiting rod 1231 is fixed, the rotating seat 124 maintains the current angle to meet different usage and storage needs.

[0045] The connecting rod 123 provides a sliding channel for the adjusting rod 125. The bottom limiting rod 1231 can slide within the adjusting groove 1251 to fix or loosen the adjusting rod 125. The top clamping pin 1232 is used to assist in positioning the adjusting rod 125, thereby achieving flexible control over the state of the rotating seat 124. The dual function of the limiting rod 1231 and the clamping pin 1232 ensures that the adjusting rod 125 will not be displaced in the fixed state, thus improving the stability and reliability of the attitude adjustment of the pushing module 12.

[0046] Specifically, the limiting rod 1231 is embedded in the adjusting groove 1251 of the adjusting rod 125 and can slide along the groove. By tightening or loosening the limiting rod 1231, the relative position of the adjusting rod 125 and the sleeve rod 123 can be fixed or released. The tightening pin 1232 further fixes the position of the adjusting rod 125 by applying a tightening force, enhancing the connection tightness between the adjusting rod 125 and the sleeve rod 123, preventing the adjusting rod 125 from undergoing slight displacement due to vibration or other factors during use, improving the stability of the overall structure, and ensuring the positional accuracy of the rotating seat 124 in the fixed state. That is, in this application, the pushing module 12 can be folded and stored by the opening and rotating function of the rotating seat 124, greatly reducing storage space and facilitating transportation and storage.

[0047] The push rod 126 provides a gripping and force-applying part for the operator and is the force-transmitting component of the pushing module 12, driving the entire device to move, making force application convenient and labor-saving. The shelf 127 provides a stable placement platform for the host computer, and its rotation function can adjust the placement angle, allowing the operator to view and operate the host computer at any time during the pushing process. The shelf 127 is equipped with a baffle to protect the host computer from easily slipping during movement.

[0048] The damping hinge provides damping force for the rotation of the shelf 127, enabling the shelf 127 to stop and remain stable at any angle, preventing the shelf 127 from rotating randomly due to vibration during the push process, reducing the risk of damage to the host computer caused by shaking, and improving the safety of use.

[0049] A handle 114 is provided on the crossbeam frame 11 near the adjustment component 3. Several support frames 115 for placing water tanks are rotatably mounted on the crossbeam frame 11. The handle 114 provides operators with additional force application points and gripping points when the equipment is moved or turned, making it easier to adjust the position of the trolley, improving the flexibility of the trolley movement and reducing the intensity of operation.

[0050] The receiving frame 115 can be adjusted in tilt angle via a rotating structure to accommodate water tanks of different sizes. It also serves to limit and fix the water tank, preventing it from shaking or slipping during trolley movement. This facilitates convenient placement and fixation of the water tank, avoiding inconvenience or loss caused by placing it directly beside the track. It ensures a continuous water supply during testing (such as when probe module 22 requires water coupling), guaranteeing a smooth testing process. The rotating adjustment function allows the receiving frame 115 to be flexibly adjusted according to the available space and water tank specifications, improving its applicability. When the water tank is not needed, the receiving frame 115 can be rotated above the crossbeam frame 11 for easy storage and to prevent damage to the receiving frame 115.

[0051] The implementation process of a stress tendency testing vehicle according to an embodiment of this application is as follows: First, insert the longitudinal beam positioning block 211 of the longitudinal beam assembly 2 into the transverse beam positioning block 111 of the transverse beam assembly 1, so that the longitudinal beam connecting plate 212 and the transverse beam connecting plate 112 are in contact. Rotate the rotating locking parts 113 at both ends of the transverse beam connecting plate 112, and pass them through the transverse beam connecting plate 112, the longitudinal beam connecting plate 212 and the longitudinal beam frame 21 in sequence to complete the rigid connection between the transverse beam assembly 1 and the longitudinal beam assembly 2. Then, fix the base plate 31 of the adjusting assembly 3 to the inner surface of the transverse beam frame 11, check whether the connection between the threaded rod 33 and the bracket 38 is firm, and ensure that the first traveling wheel 3 81 can rotate flexibly around the bracket 38; finally, the push module 12 is installed, the fixed seat 121 and the rotating seat 124 are installed, and the locking pin 1241 locks the rotation angle of the rotating seat 124, so that the push direction of the trolley is adapted to the site environment and facilitates the push operation of the operator. The position of the adjusting rod 125 and the sleeve rod 123 is locked by the top pin 1232 (that is, the position of the rotating seat 124 and the push rod 126 is locked), and the host computer is placed on the shelf 127. The damping hinge is adjusted to tilt the shelf 127 to an angle that is easy to view. Rotate the receiving frame 115 on the crossbeam frame 11 to place the water tank stably on the receiving frame 115. Lead the water pipe out from the water tank and quickly connect it to the probe module 22 through the water pipe quick-connect bracket 25 on the longitudinal beam frame 21. At the same time, organize the connection cable between the probe module 22 and the host computer, and store the excess cable in the cable box 26 of the longitudinal beam frame 21 to avoid the cable tangling affecting the movement of the trolley. Observe the track gauge of the track to be tested. If there is a track gauge deviation, rotate the threaded rod 33 of the adjustment component 3. When the threaded rod 33 rotates around the bearing seat 321, it pushes the bracket 38 to move. The bracket 38 drives the support plate 36 to slide along the slide rail 34, thereby adjusting the lateral position of the first traveling wheel 381. During the adjustment process, the handles 37 on both sides of the support plate 36 are used to assist in fine adjustment to ensure that the first traveling wheel 381 is in contact with the rail surface. At the same time, the compression of the first spring generates a preload force to compensate for the vibration gap that may be caused by the unevenness of the track. After the adjustment is completed, the self-locking characteristic of the threaded rod 33 prevents the first traveling wheel 381 from moving on its own.

[0052] Start the test trolley. The operator holds the push rod 126 of the push module 12 and places the trolley stably at the starting end of the track to be tested, ensuring that the second traveling wheel 232 and the third traveling wheel 242 of the longitudinal beam assembly 2 and the first traveling wheel 381 of the adjustment assembly 3 are all in contact with the track surface, and the second guide wheel 233, the third guide wheel 243 and the first guide wheel 382 are in contact with the side of the track respectively. Turn on the power of the host computer and the probe module 22, and adjust the working status of the ultrasonic transducer and the probe 222 to ensure that the host computer can receive and display the test signal normally. The operator pushes the push rod 126 to make the trolley move at a constant speed along the track: the traveling wheels of the traveling module roll with the push force, and the guide wheels slide along the side of the track to limit the lateral deviation of the trolley; when the third traveling wheel 242 rotates, it drives the mileage encoder 244 to run synchronously, record the trolley's mileage in real time, and transmit the position data to the host computer to achieve accurate correlation between stress data and track position; the ultrasonic transducer of the probe module 22 continuously emits ultrasonic signals, which, after penetrating the track, cause the ultrasonic reflection characteristics to change in the stress concentration area inside the track. The reflected signal is converted into an electrical signal by the transducer, filtered and amplified by the probe 222, and then transmitted to the host computer. The host computer displays the track stress distribution curve in real time. The operator observes the data through the host computer on the shelf 127. If an abnormal stress area is found, the corresponding mileage position is marked for subsequent verification. After the test section is completed, turn off the power to the host computer and probe module 22, save the stress data and mileage information recorded during the test, disconnect the water pipe from the probe module 22, store the water pipe next to the water tank, rotate the support frame 115 to store it on the crossbeam frame 11, disassemble and store the components, rotate the locking part 113 in the opposite direction to release the connection between the crossbeam assembly 1 and the longitudinal beam assembly 2, and disassemble and store the crossbeam assembly 1, the longitudinal beam assembly 2 and the adjustment assembly 3 respectively.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stress tendency testing trolley for detecting railway tracks (4), characterized in that: It includes a crossbeam assembly (1), a longitudinal beam assembly (2) and an adjustment assembly (3). One end of the crossbeam assembly (1) is detachably connected to the longitudinal beam assembly (2), and the other end is detachably installed with the adjustment assembly (3). Both the longitudinal beam assembly (2) and the adjustment assembly (3) are movably mounted on the railway track (4). The adjustment assembly (3) includes a base plate (31), which is installed on the inner surface of the crossbeam frame (11) of the crossbeam assembly (1). Two pull plates (32) are provided at the end of the base plate (31) away from the railway track (4). A bearing seat (321) is installed between the two pull plates (32). A threaded rod (33) is installed on the bearing seat (321). A slide rail (34) is installed along the length of the crossbeam frame (11) at the end of the base plate (31) near the railway track (4). A support plate (36) is slidably provided on the slide rail (34). A bracket (38) is installed on the side of the support plate (36) near the railway track (4). A first traveling wheel (381) for traveling on the railway track (4) is rotatably provided on the bracket (38). The other end of the threaded rod (33) is connected to the bracket (38). A first spring is sleeved on the threaded rod (33).

2. The stress trend testing trolley according to claim 1, characterized in that: A slider (35) is installed on one side of the support plate (36), and the slider (35) is slidably disposed on the slide rail (34). A handle (37) is installed on both sides of the support plate (36), and a second spring is sleeved on the handle (37). A connecting rod is installed at the end of the crossbeam frame (11), and the other end of the second spring is connected to the connecting rod.

3. The stress trend testing trolley according to claim 1, characterized in that: The bracket (38) is equipped with a first guide wheel (382) at one end near the bearing seat (321), and the first guide wheel (382) is slidably disposed on the side of the railway track (4).

4. The stress trend testing trolley according to claim 1, characterized in that: The longitudinal beam assembly (2) includes a longitudinal beam frame (21), a probe module (22), a first walking module (23), and a second walking module (24). The first walking module (23) is installed at one end of the longitudinal beam frame (21), and the second walking module (24) is provided at the other end. The first walking module (23) and the second walking module (24) are both movably mounted on the railway track (4). The probe module (22) is installed between the first walking module (23) and the second walking module (24). A quick-connect pipe bracket (25) is installed on the longitudinal beam frame (21) near the probe module (22). A cable box (26) is provided on the longitudinal beam frame (21).

5. The stress trend testing trolley according to claim 4, characterized in that: The probe module (22) includes a probe base (221) installed below the longitudinal beam frame (21), an ultrasonic transducer and a probe (222). The ultrasonic transducer is located on the side of the probe base (221) close to the railway track (4), and the probe (222) is installed on the probe base (221).

6. The stress trend testing trolley according to claim 4, characterized in that: The first walking module (23) includes a first walking frame (231) and a second walking wheel (232) for moving on the railway track (4). The first walking frame (231) is installed below the longitudinal beam frame (21), and the second walking wheel (232) is rotatably mounted on the first walking frame (231). A second guide wheel (233) for moving on the side of the railway track (4) is provided on one side of the first walking frame (231). The second traveling module (24) includes a second traveling frame (241) and a third traveling wheel (242) for moving on the railway track (4). The second traveling frame (241) is installed below the longitudinal beam frame (21). The third traveling wheel (242) is rotatably mounted on the second traveling frame (241). A third guide wheel (243) is provided on one side of the second traveling frame (241) and is movably mounted on the side of the railway track (4). The third traveling wheel (242) is connected to a mileage encoder (244).

7. The stress trend testing trolley according to claim 1, characterized in that: The crossbeam assembly (1) includes a crossbeam frame (11) and a pushing module (12) mounted on the crossbeam frame (11). A crossbeam positioning block (111) is provided inside one end of the crossbeam frame (11), and a crossbeam connecting plate (112) is installed at one end of the crossbeam frame (11). The longitudinal beam assembly (2) has a longitudinal beam positioning block (211) and a longitudinal beam connecting plate (212) installed on one side of the longitudinal beam frame (21). The longitudinal beam positioning block (211) The longitudinal beam connecting plate (212) is connected to the crossbeam connecting plate (112), and both ends of the crossbeam connecting plate (112) are equipped with rotating locking parts (113). One side of the rotating locking part (113) passes through the crossbeam connecting plate (112), the longitudinal beam connecting plate (212) and the longitudinal beam frame (21) so that the crossbeam frame (11) and the longitudinal beam frame (21) are detachably connected.

8. The stress trend testing trolley according to claim 7, characterized in that: The pushing module (12) includes a mounting base (122), a rotating base (124), and a fixed base (121) mounted on the crossbeam frame (11). The rotating base (124) is disposed on the fixed base (121), and an adjusting rod (125) is provided on the rotating base (124). An adjusting groove (1251) is provided on the adjusting rod (125) along its length. A sleeve rod (123) is fixedly connected to one end of the mounting base (122). The adjusting rod (125) slides into the sleeve rod (123). 123) A limiting rod (1231) for sliding in the adjustment groove (1251) is installed at the bottom. A tightening pin (1232) is provided at the top of the sleeve rod (123). The tightening pin (1232) passes through the sleeve rod (123) and abuts against the adjustment rod (125) for positioning. A plurality of push rods (126) are connected to the other end of the mounting base (122). A shelf (127) for placing the host computer is rotatably provided on the push rod (126). A damping hinge is provided between the shelf (127) and the push rod (126).

9. The stress trend testing trolley according to claim 1, characterized in that: A handle (114) is provided on the crossbeam frame (11) near the end of the adjustment component (3), and a plurality of support frames (115) for placing water tanks are rotatably provided on the crossbeam frame (11).

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