Device for detecting performance of ballastless track elastic cushion on long-span cable-stayed bridge

Abstract

The invention discloses a device for detecting the performance of an elastic cushion layer of a ballastless track on a long-span cable-stayed bridge, and the device comprises a rail travelling crane with a vehicle-mounted power supply, the front end of the rail travelling crane is connected with a turnover mechanism through a lifting frame, and one end, away from the lifting frame, of the turnover mechanism is provided with a rotary excitation mechanism. An anti-shake support is installed at the front end of the rail travelling crane, an image collector and a laser vibration measuring instrument are installed on the anti-shake support, and a paint marking unit is installed on the rail travelling crane. According to the method, the purposes of identifying, detecting and marking the failure elastic cushion layer in the ballastless track can be achieved, then deformation coordination between ballastless track structures is guaranteed, and driving safety, stability and comfort are guaranteed. The method is suitable for the technical field of ballastless track elastic cushion layer performance detection on a long-span cable-stayed bridge.

Description

Technical Field

[0001] The invention belongs to the technical field of railway track detection, and in particular relates to a device for detecting the performance of an elastic cushion layer of a ballastless track on a long-span cable-stayed bridge. Background Art

[0002] With the rapid development of high-speed railways in my country, the requirements for the spanning capacity of high-speed railway bridges are constantly increasing. Among them, cable-stayed bridges have become one of the most commonly used bridge types for long-span bridges in my country due to their superior spanning capacity. More and more long-span cable-stayed bridges (main span greater than or equal to 300m) are paved with ballastless tracks. In order to improve the adaptability of ballastless tracks on long-span cable-stayed bridges, rubber isolation layers are introduced between the ballastless track layers to replace the traditional geotextile isolation layers. The rubber isolation layer changes the vibration characteristics of the original ballastless track on the bridge and has a certain vibration reduction and vibration isolation effect. The elastic rubber isolation layer is an elastic cushion layer made of rubber material with excellent elasticity and buffering properties. Under the influence of external loads, such as vehicle loads, cyclic changes in temperature loads, chemical corrosion such as rainwater, and mechanical wear, the elastic cushion layer will age and harden. This aging process will cause the elastic cushion layer to gradually lose its original elasticity, resulting in stiffness attenuation, which has a great impact on maintaining the deformation coordination of the track structure.

[0003] At present, after the construction of the ballastless track on the bridge is completed, the elastic cushion is buried inside the concrete track slab, which makes it difficult to effectively identify the aging and failure of the elastic cushion by traditional manual inspection methods. Once the elastic cushion fails in stiffness, it will directly affect the driving safety of high-speed railways and the comfort of passengers if it is not discovered and replaced in time.

[0004] From the above, it can be seen that there is an urgent need for a device that can accurately and quickly detect the elastic cushion of the ballastless track, so as to identify, detect and mark the failed elastic cushion in the ballastless track, so as to ensure the deformation coordination between the ballastless track structures and the safety, stability and comfort of driving. Summary of the invention

[0005] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a device for detecting the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge.

[0006] The technical solution of the present invention is: a device for detecting the performance of an elastic cushion layer of a ballastless track on a long-span cable-stayed bridge, comprising a track vehicle with a power supply on board, a tipping mechanism connected to the front end of the track vehicle through a lifting frame, a rotary excitation mechanism installed at one end of the tipping mechanism away from the lifting frame, an anti-shake bracket installed at the front end of the track vehicle, an image collector and a laser vibrometer installed on the anti-shake bracket, and a paint marking unit installed on the track vehicle.

[0007] Furthermore, the rail vehicle includes two frames arranged at laterally intervals along the track, and a first shaft rod and a second shaft rod are respectively connected to the two ends of the two frames, and first rail wheels are rotatably mounted on the two ends of the first shaft rod, and second rail wheels are rotatably mounted on the two ends of the second shaft rod, and each of the first rail wheels is transmission-connected to a power mechanism constructed between the first rail wheel and the corresponding frame.

[0008] Furthermore, the power mechanism includes a power motor installed on the corresponding frame, a driving gear is installed on the output shaft of the power motor, a driven gear is coaxially installed on the first rail wheel, and the driving gear and the driven gear are meshed with each other.

[0009] Furthermore, the lifting frame includes an assembly seat with a transverse slide rail installed, vertical adapter plates are respectively constructed at the two transverse ends of the assembly seat, and a connecting plate is constructed at the upper end of each vertical adapter plate, each connecting plate is connected to a vertical driving member, and the lower end of the vertical driving member is connected and fixed to the rail vehicle; a linear slide is movably installed on the transverse slide rail, and the flipping mechanism is connected and fixed to the linear slide.

[0010] Furthermore, an elastic telescopic part is arranged between the vertical adapter plate and the corresponding connecting plate, and the elastic telescopic part includes a plurality of columnar springs. These columnar springs are arranged side by side, and the columnar springs close to each other are hooked together. The upper and lower ends of each columnar spring are respectively connected and fixed to the connecting plate and the vertical adapter plate.

[0011] Furthermore, the flipping mechanism includes a side oil cylinder or a side air cylinder or a side electric cylinder, the flipping driving component of the flipping mechanism is connected to the linear slide, and the flipping base of the flipping mechanism is connected to the rotary vibration excitation mechanism.

[0012] Furthermore, the rotary excitation mechanism includes a driving motor installed on a flip pedestal, a driving pulley is installed on the output shaft of the driving motor, an assembly pulley is rotatably connected to the flip pedestal, the assembly pulley is connected to the driving pulley through a transmission belt, and a plurality of excitation members are installed on the assembly pulley at intervals along its circumference.

[0013] Furthermore, an adjusting electric cylinder is fixed on the flip platform, the cylinder body of the adjusting electric cylinder passes through the mounting pulley along the axis of the mounting pulley, and the mounting pulley is rotatably connected to the cylinder body, a first connecting sleeve is sleeved on the cylinder rod of the adjusting electric cylinder, the first connecting sleeve is rotatably connected to the cylinder rod, a second connecting sleeve is fixed on each excitation member, the first connecting sleeve and each second connecting sleeve are connected by a hinged rod, and one end of the excitation member is hinged to the end face of the mounting pulley.

[0014] Furthermore, the exciting component includes a connecting rod with an articulated seat hinged at one end, the second connecting sleeve is mounted outside the connecting rod, a locking bolt is threadedly connected to the second connecting sleeve, the end of the locking bolt is locked on the circumferential surface of the connecting rod, a strip hole extending radially along the assembly pulley is opened on the articulated seat, one end of the fastening bolt passes through the strip hole and is threadedly connected to the corresponding threaded hole on the assembly pulley, and an exciting ball is connected to the end of the connecting rod away from the articulated seat.

[0015] Furthermore, the paint marking unit includes a mounting base installed on the rail vehicle, a limiting ring is constructed on the mounting base, a supporting edge extending radially inward is constructed at the lower end of the limiting ring, the lower end of the paint canister is assembled in the limiting ring, a delivery pump is installed on the mounting base, the inlet end of the delivery pump is connected to the lower end of the paint canister through an inlet pipe, the outlet end of the delivery pump is connected to the paint nozzle through a rubber tube, and the paint nozzle is fixed on one side of the flipping mechanism.

[0016] The beneficial effects of the present invention are as follows: When testing the performance of the elastic cushion layer in the ballastless track, the present invention controls the rail vehicle to move on the track. When the image collector detects that there are obstructions such as gravel on the ballastless track, the flipping mechanism is controlled to flip the rotary vibration mechanism to a horizontal state, and then the lifting frame is controlled to move so that the rotary vibration mechanism moves downward and close to the ballastless track. After that, the rotary vibration mechanism is controlled to rotate to remove the obstructions on the ballastless track; then, the lifting frame is controlled to return to its original position, and then the flipping mechanism is controlled to flip the rotary vibration mechanism to a vertical state, and then the lifting frame is controlled to drive the rotary vibration mechanism to descend through the flipping mechanism; then the rotary vibration mechanism is controlled to rotate, and the rotary vibration mechanism vibrates (knocks) the ballastless track during the rotation process. At this time, the laser vibrometer collects data on the vibration of the ballastless track, and the collected data is connected to the data analysis instrument through a data transmission line. The data analysis instrument is equipped with a wireless signal transmitter to send reminders to the maintenance personnel in time. When elastic failure of the elastic cushion is identified, the paint marking unit performs a spraying operation to spray paint on the failure site so that the location is clearly marked, so that the maintenance personnel can find it in time and carry out subsequent maintenance.

[0017] The rail vehicle of the present invention is equipped with a Beidou positioning template for locating the failure point, so that maintenance personnel can quickly find the failure point.

[0018] The present invention can realize automatic detection of elastic cushion stiffness failure, automatic data collection, and automatic data analysis by allowing the track vehicle to move on its own on the track; and the present invention has high detection efficiency. Compared with the manual inspection method, by setting the track vehicle of the present invention to a certain speed, rapid inspection of elastic cushion failure of ballastless track on a large-span cable-stayed bridge can be completed, and the detection efficiency is greatly improved; the present invention also saves labor costs, reduces the investment in manpower, material resources and financial resources, especially in the high temperature season in summer, when the temperature on the bridge is not suitable for manual work, and the use of the present invention can avoid the situation of manual high-temperature operation.

[0019] The present invention can achieve the purpose of identifying, detecting and marking the failed elastic cushion layer in the ballastless track, thereby ensuring the deformation coordination between the ballastless track structures and guaranteeing the safety, stability and comfort of driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a rotary excitation mechanism in a vertical state according to an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a rotary excitation mechanism in a horizontal state in an embodiment of the present invention; Figure 3 It is a schematic structural diagram of the connection between the rail vehicle, the lifting frame, the turning mechanism and the rotary excitation mechanism in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a rail vehicle in an embodiment of the present invention; Figure 5 It is a schematic diagram of a partial structure of a rail vehicle in an embodiment of the present invention; Figure 6 It is a structural schematic diagram of the connection between the turning mechanism and the rotary excitation mechanism in the embodiment of the present invention; Figure 7 It is a partial structural schematic diagram of the rotary excitation mechanism in an embodiment of the present invention; Figure 8 This is a schematic diagram of a structure in which a lifting frame and a linear slide are connected in an embodiment of the present invention; Fig. 9 This is a schematic diagram of another structure in which a lifting frame is connected to a linear slide in an embodiment of the present invention; Fig.10 It is a schematic diagram of the structure of the connection between the anti-shake bracket, the image collector and the laser vibration measuring instrument in an embodiment of the present invention; Fig.11 Schematic diagram of the structure of the mounting base in the paint marking unit in an embodiment of the present invention; Fig.12 Schematic diagram of the structure of the connection between the paint canister, the delivery pump and the paint spray head in the paint marking unit in an embodiment of the present invention.

[0021] Among them, 100-rail vehicle, 101-frame, 102-first rail wheel, 103-second rail wheel, 104-first shaft, 105-second shaft, 106-power motor, 107-driving gear, 108-driven gear, 200-lifting frame, 201-horizontal slide rail, 202-vertical adapter plate, 203-connecting plate, 204-vertical driving member, 205-elastic telescopic member, 206-assembly seat, 300-turning mechanism, 301-turning driving member, 302-turning pedestal, 400-rotating excitation mechanism, 401-driving motor, 402-driving pulley, 403-assembly pulley, 404-transmission belt, 405-rotating disk, 406-articulated seat, 407-connecting rod, 408-excitation ball, 409-adjusting electric cylinder, 410-cylinder rod, 411-first connecting sleeve, 412-connecting cap, 413-second connecting sleeve, 414-locking bolt, 415-hinge rod, 416-strip hole, 500-anti-shake bracket, 501-bracket body, 502-first anti-shake gimbal stabilizer, 503-second anti-shake gimbal stabilizer, 600-image collector, 700-laser vibration measuring instrument, 800-paint marking unit, 801-mounting seat, 802-limiting ring, 803-support edge, 804-assembly port, 805-paint cylinder, 806-upper end cover, 807-feed pipe, 808-control valve, 809-delivery pump, 810-inlet pipe, 811-rubber tube, 812-paint nozzle, 900-linear slide. DETAILED DESCRIPTION

[0022] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 12 As shown, a device for testing the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge includes a track vehicle 100, a lifting frame 200, a turnover mechanism 300, a rotary excitation mechanism 400, an anti-shake bracket 500, an image collector 600, a laser vibrometer 700 and a paint marking unit 800. A power supply and a controller are mounted on the track vehicle 100. The controller is connected to the power supply, the track vehicle 100, the lifting frame 200, the turnover mechanism 300, the rotary excitation mechanism 400, the image collector 600, the laser vibrometer 700 and the paint marking unit 800. The track vehicle 100 can move along the extension direction of the track under the command of the controller. The lifting frame 200 is installed at the front end of the track vehicle 100. The lifting frame 200 is connected to the turnover mechanism 300. The rotary excitation mechanism 400 is installed at the end of the turnover mechanism 300 away from the lifting frame 200. The anti-shake bracket 500 of the present invention is also installed at the front end of the rail vehicle 100 , the image collector 600 and the laser vibrometer 700 are both installed on the anti-shake bracket 500 , and the paint marking unit 800 is installed at the middle and rear part of the rail vehicle 100 .

[0023] The working principle and advantages of the present invention are as follows: when testing the performance of the elastic cushion layer in the ballastless track, the present invention controls the rail vehicle 100 to move on the track. When the image collector 600 detects that there are obstructions such as gravel on the ballastless track, the flip mechanism 300 is controlled to flip the rotary vibration mechanism 400 to a horizontal state, and then the lifting frame 200 is controlled to move so that the rotary vibration mechanism 400 moves downward and approaches the ballastless track. After that, the rotary vibration mechanism 400 is controlled to rotate to remove the obstructions on the ballastless track; then, the lifting frame 200 is controlled to rotate. Return to the original position, and then control the flipping mechanism 300 to flip the rotary excitation mechanism 400 to a vertical state, and then control the lifting frame 200 to drive the rotary excitation mechanism to descend through the flipping mechanism 300; then control the rotary excitation mechanism to rotate, and the rotary excitation mechanism excites (knocks) the ballastless track during the rotation process. At this time, the laser vibrometer 700 collects data on the vibration of the ballastless track, and the collected data is connected to the data analysis instrument through a data transmission line. The data analysis instrument is equipped with a wireless signal transmitter to send reminders to the engineering personnel in time. When the elastic failure of the elastic cushion layer is identified, the paint marking unit 800 performs a spraying operation and sprays the paint on the failure site, so that the location is clearly marked, so that the engineering personnel can find it in time and carry out subsequent maintenance and repair.

[0024] The rail vehicle 100 of the present invention is also equipped with a Beidou positioning template for locating the failure point, so that the maintenance personnel can quickly find the failure point.

[0025] The present invention can realize automatic detection of elastic cushion stiffness failure, automatic data collection, and automatic data analysis by allowing the track vehicle 100 to move on the track by itself; and the detection efficiency of the present invention is high. Compared with the manual inspection method, by setting a certain speed of the track vehicle 100 of the present invention, a rapid inspection of the elastic cushion failure of the ballastless track on a large-span cable-stayed bridge can be completed, and the detection efficiency is greatly improved; the present invention also saves labor costs and reduces the investment in manpower, material and financial resources, especially in the hot summer season, when the temperature on the bridge is not suitable for manual work, and the use of the present invention can avoid the situation of manual high-temperature operations. In summary, the present invention can achieve the purpose of identifying, detecting and marking failed elastic cushions in ballastless tracks, thereby ensuring the deformation coordination between ballastless track structures and ensuring the safety, stability and comfort of driving.

[0026] like Figures 3 to 5As shown, the rail vehicle 100 includes a first shaft 104, a second shaft 105, two frames 101, two first rail wheels 102 and two second rail wheels 103. The two frames 101 are arranged at intervals along the lateral direction of the track, each frame 101 extends along the length direction of the track, the first shaft 104 and the second shaft 105 are installed between the two frames 101 at intervals along the length direction of the track, and the first shaft 104 and the second shaft 105 are arranged at both ends of the length direction of the frame 101. The two first rail wheels 102 of this embodiment are respectively rotatably assembled at the two end ends of the first shaft 104, and the two second rail wheels 103 are respectively rotatably assembled at the two end ends of the second shaft 105.

[0027] In this embodiment, a power mechanism is installed between each first rail wheel 102 and the corresponding frame 101, and the power mechanism is transmission-connected with the first rail wheel 102. The two power mechanisms are used to drive the two first rail wheels 102 to rotate, thereby achieving the purpose of the rail vehicle 100 running on the track.

[0028] The specific structure of the power mechanism of this embodiment is that the power mechanism includes a power motor 106, a driving gear 107 and a driven gear 108. The power motor 106 is installed on the corresponding frame 101, the driving gear 107 is assembled on the output shaft of the power motor 106, and the driven gear 108 is coaxially assembled on the first rail wheel 102, and the driving gear 107 and the driven gear 108 are meshed with each other. In this embodiment, the power motor 106 drives the driving gear 107 to rotate in a forward or reverse direction, so that the driving gear 107 drives the first rail wheel 102 to rotate through the driven gear 108, thereby achieving the purpose of the rail vehicle 100 moving forward or backward on the track.

[0029] like Figure 3 , 8 As shown, the lifting frame 200 includes an assembly seat 206, a transverse slide rail 201, two vertical adapter plates 202, two connecting plates 203 and two vertical driving members 204. The transverse slide rail 201 of this embodiment is installed on the assembly seat 206, and the transverse slide rail 201 and the assembly seat 206 both extend in the transverse direction of the track. The two vertical adapter plates 202 are respectively constructed at the ends of the two transverse ends of the assembly seat 206, and the two connecting plates 203 are respectively constructed at the upper ends of the two vertical adapter plates 202. The upper ends of the two vertical driving members 204 are respectively connected and fixed to the two connecting plates 203, and the lower ends of the two vertical driving members 204 are respectively connected and fixed to the two frames 101 of the rail vehicle 100. The vertical driving members 204 generally use vertically arranged electric cylinders.

[0030] In this embodiment, a linear slide 900 is movably mounted on the transverse slide rail 201 , and the above-mentioned flipping mechanism 300 is connected and fixed to the linear slide 900 .

[0031] The working principle and advantages of this embodiment are as follows: since the flipping mechanism 300 is connected to the lifting frame 200 through the linear slide 900, the two vertical driving members 204 are controlled to extend and retract synchronously, so that the two drive the assembly seat 206 to rise and fall through the connecting plate 203 and the vertical adapter plate 202, and the assembly seat 206 drives the flipping mechanism 300 to rise and fall through the transverse slide rail 201, and the flipping mechanism 300 drives the rotary vibration mechanism 400 to rise and fall, so that the rotary vibration mechanism 400 can clear the debris on the ballastless track, and the subsequent rotary vibration mechanism 400 can perform vibration operation on the ballastless track.

[0032] This embodiment can control the linear slide 900 to move on the transverse slide rail 201, so that the linear slide 900 drives the rotary excitation mechanism 400 to move transversely through the flip mechanism 300, and then perform debris cleaning and excitation operations on different positions in the transverse direction of the ballastless track, thereby improving the comprehensiveness and accuracy of detection and avoiding the occurrence of blind spots in detection.

[0033] like Fig. 9 As shown, an elastic expansion member 205 is provided between the vertical adapter plate 202 and the corresponding connecting plate 203. The elastic expansion member 205 includes a plurality of columnar springs, which are arranged side by side, and the columnar springs close to each other are hooked together, so that the columnar springs form a whole, and the upper and lower ends of each columnar spring are respectively connected and fixed to the connecting plate 203 and the vertical adapter plate 202. In this embodiment, since the elastic expansion member 205 is used as an elastic adapter connecting the lifting frame 200 and the turning mechanism 300, when the turning mechanism 300 and / or the rotary excitation mechanism 400 are subjected to external force, they can have a certain elastic energy storage to avoid damage, especially when the rotary excitation mechanism 400 performs cleaning and excitation operations, the energy storage and buffering operations of the elastic expansion member 205 are more significant.

[0034] like Figure 6 As shown, the flip mechanism 300 includes a side oil cylinder or a side air cylinder or a side electric cylinder, and the flip driving member 301 of the flip mechanism 300 is a hydraulic oil cylinder or a driving air cylinder or a driving electric cylinder. Generally, a side electric cylinder is selected as the flip mechanism 300. In this embodiment, the flip driving member 301 of the flip mechanism 300 is connected to the linear slide 900, and the flip pedestal 302 of the flip mechanism 300 is connected to the rotary excitation mechanism 400. In this embodiment, the flip driving member 301 drives the flip pedestal 302 to flip 90°, so that the rotary excitation mechanism 400 installed on the flip pedestal 302 is switched between a vertical state and a horizontal state.

[0035] like Figure 6 , 7As shown, the rotary excitation mechanism 400 includes a driving motor 401, a driving pulley 402, an assembly pulley 403 and a plurality of excitation components. The driving motor 401 is mounted on the flip pedestal 302, and the driving pulley 402 is mounted on the output shaft of the driving motor 401. A rotating disk 405 is constructed at one end of the assembly pulley 403 close to the flip pedestal 302, and the rotating disk 405 is rotatably mounted on the flip pedestal 302 to achieve the purpose of rotatably connecting the assembly pulley 403 with the flip pedestal 302. The assembly pulley 403 and the driving pulley 402 are connected by a transmission belt 404. The plurality of excitation components described in this embodiment are all mounted on the end face of the assembly pulley 403 away from the flip pedestal 302, and these excitation components are evenly arranged along the circumference of the assembly pulley 403.

[0036] The working principle and advantages of this embodiment are as follows: when the turning mechanism 300 adjusts the rotary vibration mechanism 400 to a horizontal state, the lifting frame 200 is controlled to indirectly drive the rotary vibration mechanism 400 to descend until the vibration member is close to or in contact with the ballastless track; then the driving motor 401 is controlled to operate, so that the driving motor 401 drives the assembly pulley 403 to rotate through the driving pulley 402 and the transmission belt 404, and the assembly pulley 403 drives the vibration member thereon to move, so that the vibration member can move the gravel and other debris on the ballastless track. After cleaning, the lifting frame 200 is controlled to return to its original position, and the flip mechanism 300 adjusts the rotary vibration mechanism 400 to a vertical state, and then the lifting frame 200 is controlled to drive the rotary vibration mechanism 400 to descend a certain distance; then, the driving motor 401 is controlled to drive the assembly pulley 403 to rotate, and the vibration member on the assembly pulley 403 performs a single or multiple vibrations on the ballastless track, and finally, the laser vibration measuring instrument 700 receives the data signal, and then performs data analysis to determine the performance of the elastic cushion layer. It can be seen that the vibration member of this embodiment can not only clean up the debris, but also act as a vibration exciter.

[0037] like Figure 6 , 7As shown, an adjustment electric cylinder 409 is fixed on the flip pedestal 302, and the cylinder body of the adjustment electric cylinder 409 passes through the assembly pulley 403 along the axis of the assembly pulley 403, and the assembly pulley 403 is rotatably connected to the cylinder body. In this embodiment, a first connecting sleeve 411 is sleeved on the cylinder rod 410 of the adjustment electric cylinder 409, and the first connecting sleeve 411 is rotatably connected to the cylinder rod 410. A connecting cap 412 is detachably connected to one end of the cylinder rod 410 away from the cylinder body, and one end of the first connecting sleeve 411 is close to the connecting cap 412. A limiting flange extending radially outward is constructed on the cylinder rod 410, and the other end of the first connecting sleeve 411 is close to the limiting flange, that is, the first connecting sleeve 411 is located between the connecting cap 412 and the limiting flange, thereby limiting the axial displacement of the first connecting sleeve 411 and preventing it from axial movement. In this embodiment, a second connecting sleeve 413 is fixed on each excitation member, the first connecting sleeve 411 is connected to each second connecting sleeve 413 via a hinge rod 415, and one end of the excitation member close to the assembly pulley 403 is hinged to the end face of the assembly pulley 403.

[0038] The working principle and advantages of this embodiment are: this embodiment can adjust the degree of opening of these exciting members, thereby changing the range of debris clearing, and can also change the stroke of the exciting, so that the intensity of the exciting changes; specifically, the action of the electric cylinder 409 is controlled and adjusted to extend or shorten the cylinder rod 410. During the extension and retraction process, the cylinder rod 410 drives each articulated rod 415 to change its angle through the first connecting sleeve 411, so that the articulated rod 415 drives the corresponding exciting member to change its degree of opening, thereby changing the distance between the ends of adjacent exciting members away from the assembly pulley 403, and changing the debris clearing range covered by these exciting members.

[0039] like Figure 6 , 7 As shown, the excitation member includes a connecting rod 407 and an excitation ball 408. The connecting rod 407 can be a hard rod or an elastic rod, and an elastic rod is generally selected. One end of the connecting rod 407 is hinged with a hinge seat 406. The second connecting sleeve 413 of this embodiment is sleeved outside the connecting rod 407, and a locking bolt 414 is threadedly connected to the second connecting sleeve 413, and the end of the locking bolt 414 is locked on the circumference of the connecting rod 407; in this embodiment, by loosening the locking bolt 414, the position of the second connecting sleeve 413 on the connecting rod 407 is adjustable. After adjusting the position of the second connecting sleeve 413 on the connecting rod 407, the locking bolt 414 is tightened to fix the second connecting sleeve 413 to the connecting rod 407, so that the inclination angle of the hinged rod 415 changes, and then the hinged rod 415 drives the connecting rod 407 to change its angle, so as to achieve the purpose of manually adjusting the opening and closing angle of the excitation member.

[0040] In this embodiment, a strip hole 416 extending radially along the assembly pulley 403 is provided on the articulated seat 406, and one end of the fastening bolt passes through the strip hole 416 and is threadedly connected to the corresponding threaded hole on the assembly pulley 403. In this embodiment, the position of the articulated end of the connecting rod 407 can be adjusted by changing the connection position of the articulated seat 406 and the assembly pulley 403; and then, through the position of the second connecting sleeve 413 and the connecting rod 407 and the connection position of the connecting rod 407 and the assembly pulley 403, the opening and closing limits (i.e., the maximum and minimum thresholds of the opening and closing) of these exciting parts are determined before the adjustment of the electric cylinder 409, so as to ensure that the exciting parts have the ability to fully clear impurities and effectively excite.

[0041] In this embodiment, an exciting ball 408 is connected to the end of the connecting rod 407 away from the hinge seat 406. In this embodiment, the exciting ball 408 is used to remove debris such as gravel, and the ballastless track is also excited by the exciting ball 408. Moreover, the exciting ball 408 is a spherical structure, and its excitation effect is the best compared with other structures. If other shapes of exciting components are used, it cannot be ensured that the contact area with the ballastless track remains constant. For example, if a hexahedron or octahedron is used, when it contacts the ballastless track, it may be surface contact, line contact or point contact, so the detection error is relatively large. In this embodiment, when it is impossible to directly contact the ballastless track for vibration operation, the length of the connecting rod 407 on the vibration member can be changed, so that the length of at least one of the connecting rods 407 on these vibration members is different; when the rotary vibration mechanism 400 is in a vertical state, the assembly pulley 403 is driven to rotate, and the assembly pulley 403 drives these vibration members to rotate. Due to the difference in the length of the connecting rod 407, the assembly pulley 403 produces polarization during the rotation process, so that the rail vehicle 100 intermittently suppresses the ballastless track, and then the laser vibrometer 700 is used to collect data.

[0042] like Fig.10 As shown, the anti-shake bracket 500 includes a bracket body 501, which is connected and fixed to the frame 101 of the rail vehicle 100, and a first anti-shake gimbal stabilizer 502 and a second anti-shake gimbal stabilizer 503 are installed side by side on the bracket body 501, and an image collector 600 and a laser vibrometer 700 are installed on the first anti-shake gimbal stabilizer 502 and the second anti-shake gimbal stabilizer 503 respectively. The image collector is generally a camera, which is used to intuitively detect whether there is gravel at the position to be tested on the ballastless track.

[0043] This embodiment uses the first anti-shake gimbal stabilizer 502 and the second anti-shake gimbal stabilizer 503 to stabilize the image collector 600 and the laser vibrometer 700, so as to avoid angle changes of the image collector 600 during the excitation process, which would make it impossible to effectively detect the specific conditions of the ballastless track; at the same time, it also avoids the vibration of the laser vibrometer 700, which would cause deviations in data collection and affect subsequent data analysis.

[0044] The first anti-shake gimbal stabilizer 502 and the second anti-shake gimbal stabilizer 503 of the present embodiment may also be replaced by gyroscopes.

[0045] like Fig.11 , 12 As shown, the paint marking unit 800 includes a mounting seat 801, a paint can 805 and a delivery pump 809. The mounting seat 801 is mounted on the rail vehicle 100, a limiting ring 802 is configured on the mounting seat 801, an annular supporting edge 803 is configured at the lower end of the limiting ring 802, the supporting edge 803 extends radially inwardly of the limiting ring 802, and an assembly port 804 is formed in the supporting edge 803.

[0046] The lower end of the paint can 805 of this embodiment is assembled in the limiting ring 802, and the outlet joint of the lower end of the paint can 805 extends out of the assembly port 804; the upper end of the paint can 805 is detachably connected with an upper end cover 806, a feed pipe 807 is constructed on the upper end cover 806, and a control valve 808 is installed on the feed pipe 807. The delivery pump 809 of this embodiment is installed on the mounting seat 801, the inlet end of the delivery pump 809 is connected to the outlet joint of the lower end of the paint can 805 through the inlet pipe 810, and the outlet end of the delivery pump 809 is connected to the paint spray head 812 through the rubber tube 811, and the paint spray head 812 is fixed to one side of the flip mechanism 300. When the linear slide 900 drives the flipping mechanism 300 to move, the paint nozzle 812 moves accordingly, thereby realizing paint marking of the area where the elastic cushion performance fails after the later vibration and data collection, that is, controlling the action of the delivery pump 809 so that the delivery pump 809 pressurizes the paint in the paint cylinder 805 and supplies it to the paint nozzle 812, and the paint is sprayed on the target area, so that the maintenance personnel can find it in time and carry out subsequent maintenance.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A device for testing the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge, characterized in that: The invention comprises a rail vehicle (100) with an onboard power supply, a tipping mechanism (300) connected to the front end of the rail vehicle (100) via a lifting frame (200), a rotary excitation mechanism (400) installed at one end of the tipping mechanism (300) away from the lifting frame, an anti-shake bracket (500) installed at the front end of the rail vehicle (100), an image collector (600) and a laser vibrometer (700) installed on the anti-shake bracket (500), and a paint marking unit (800) installed on the rail vehicle (100).

2. The device for detecting the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge according to claim 1 is characterized in that: The rail vehicle (100) comprises two frames (101) arranged at intervals along a track in a transverse direction, a first shaft (104) and a second shaft (105) are respectively connected to the two ends of the two frames (101), first rail wheels (102) are rotatably mounted on the two ends of the first shaft (104), and second rail wheels (103) are respectively rotatably mounted on the two ends of the second shaft (105), and each of the first rail wheels (102) is transmission-connected to a power mechanism constructed between the first rail wheel (102) and the corresponding frame (101).

3. The device for detecting the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge according to claim 2 is characterized in that: The power mechanism comprises a power motor (106) mounted on a corresponding frame (101), a driving gear (107) being mounted on an output shaft of the power motor (106), a driven gear (108) being coaxially mounted on the first track wheel (102), and the driving gear (107) and the driven gear (108) being meshed with each other.

4. The device for detecting the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge according to claim 1 is characterized in that: The lifting frame (200) comprises an assembly seat (206) on which a transverse slide rail (201) is installed, and vertical adapter plates (202) are respectively constructed at the transverse ends of the assembly seat (206), and a connecting plate (203) is constructed at the upper end of each vertical adapter plate (202), and each connecting plate (203) is connected to a vertical driving member (204), and the lower end of the vertical driving member (204) is connected and fixed to the rail vehicle (100); a linear slide (900) is movably mounted on the transverse slide rail (201), and the flip mechanism (300) is connected and fixed to the linear slide (900).

5. The device for detecting the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge according to claim 4 is characterized in that: An elastic telescopic member (205) is arranged between the vertical adapter plate (202) and the corresponding connecting plate (203), and the elastic telescopic member (205) comprises a plurality of columnar springs, which are arranged side by side and the columnar springs close to each other are hooked together, and the upper and lower ends of each columnar spring are respectively connected and fixed to the connecting plate (203) and the vertical adapter plate (202).

6. The device for detecting the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge according to claim 4 is characterized in that: The flip mechanism (300) comprises a side oil cylinder or a side air cylinder or a side electric cylinder; the flip driving component (301) of the flip mechanism (300) is connected to the linear slide (900); and the flip pedestal (302) of the flip mechanism (300) is connected to the rotary excitation mechanism (400).

7. The device for testing the elastic cushion performance of ballastless track on a long-span cable-stayed bridge according to claim 6 is characterized in that: The rotary excitation mechanism (400) comprises a driving motor (401) mounted on a flip pedestal (302), a driving pulley (402) mounted on the output shaft of the driving motor (401), an assembly pulley (403) rotatably connected to the flip pedestal (302), the assembly pulley (403) and the driving pulley (402) being transmission-connected via a transmission belt (404), and a plurality of excitation members are mounted on the assembly pulley (403) at intervals along its circumference.

8. The device for testing the elastic cushion performance of ballastless track on a long-span cable-stayed bridge according to claim 7 is characterized in that: An adjusting electric cylinder (409) is fixed on the flip pedestal (302); a cylinder body of the adjusting electric cylinder (409) passes through the mounting pulley (403) along the axis of the mounting pulley (403); the mounting pulley (403) is rotatably connected to the cylinder body; a first connecting sleeve (411) is sleeved on the cylinder rod of the adjusting electric cylinder (409); the first connecting sleeve (411) is rotatably connected to the cylinder rod; a second connecting sleeve (413) is fixed on each excitation member; the first connecting sleeve (411) is connected to each second connecting sleeve (413) via a hinged rod (415); and one end of the excitation member is hinged to the end surface of the mounting pulley (403).

9. The device for testing the performance of elastic cushion of ballastless track on a long-span cable-stayed bridge according to claim 8, characterized in that: The exciting component comprises a connecting rod (407) having one end hinged to an articulated seat (406), the second connecting sleeve (413) being sleeved outside the connecting rod (407), a locking bolt (414) being threadedly connected to the second connecting sleeve (413), the end of the locking bolt (414) being locked to the circumferential surface of the connecting rod (407), a strip hole (416) extending radially along the assembly pulley (403) being provided on the articulated seat (406), one end of the fastening bolt passing through the strip hole (416) and being threadedly connected to a corresponding threaded hole on the assembly pulley (403), and an exciting ball (408) being connected to the end of the connecting rod (407) away from the articulated seat (406).

10. The device for testing the elastic cushion performance of ballastless track on a long-span cable-stayed bridge according to claim 1, characterized in that: The paint marking unit (800) comprises a mounting seat (801) mounted on a rail vehicle (100), a limiting ring (802) being constructed on the mounting seat (801), a supporting edge (803) extending radially inwardly thereof being constructed at the lower end of the limiting ring (802), the lower end of a paint can (805) being assembled in the limiting ring (802), a delivery pump (809) being mounted on the mounting seat (801), the inlet end of the delivery pump (809) being connected to the lower end of the paint can (805) via an inlet pipe (810), the outlet end of the delivery pump (809) being connected to a paint spray head (812) via a rubber pipe (811), and the paint spray head (812) being fixed on one side of the flip mechanism (300).

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