Intelligent wear detection device and detection method for rail transit rigid contact line

Abstract

The present invention discloses an intelligent wear detection device for a rigid contact line of rail transit, comprising a wear detection unit and a dust removal unit, both of which can move along a π-type bus. The wear detection unit and the dust removal unit can be disassembled and suspended directly below the π-type bus equipped with the rigid contact line, and along the moving direction, the dust removal unit is in front and the wear detection unit is in the back. The wear detection unit and the dust removal unit both comprise a traction mechanism and a suspension traveling mechanism. The suspension traveling mechanisms both adopt a symmetrical structure and are arranged on both sides of the π-type bus and can move along the π-type bus under the drive of the traction mechanism. The wear detection unit also comprises a wear detection module for performing wear detection on the rigid contact line directly below the π-type bus; the dust removal unit also comprises a cleaning mechanism, which is arranged directly below the rigid contact line and is used to remove dust from the exposed surface of the rigid contact line on the π-type bus.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit detection, and in particular relates to an intelligent wear detection device and a detection method for a rigid contact line of rail transit. Background Art

[0002] The catenary, a specialized transmission line erected overhead along a subway line, is a crucial piece of equipment for urban railways. Direct contact between the catenary and the carbon slides of the pantograph provides reliable and uninterrupted power to electric buses. Therefore, ensuring uninterrupted power to the catenary and maintaining a good dynamic relationship between the pantograph and the catenary are crucial objectives and tasks in catenary maintenance.

[0003] Traditional contact line wear detection equipment is mainly divided into two categories: automatic detection devices and handheld detection devices. The disadvantages of handheld detection devices are very obvious, such as low measurement accuracy, large errors, low measurement efficiency, and high labor costs; when the automatic detection device is installed, the positioning and fitting with the busbar relies solely on manpower, which has poor stability and is difficult to install; the limiting method is too single, which is prone to skewed measurement, affecting measurement accuracy; laser scanning detection is mostly used. In order to maintain conductive properties, the carbon slide plate on the pantograph will be coated with conductive paste. The carbon powder and environmental dust generated after the carbon slide plate and the rigid contact line slide for a long time will accumulate on both sides of the rigid contact line with the conductive paste, which will interfere with the data obtained by the laser scanning detection, making it difficult to distinguish the wear interface of the rigid contact line, resulting in misjudgment and seriously affecting the measurement accuracy. Summary of the Invention

[0004] The present invention provides an intelligent wear detection device and detection method for a rigid contact line of rail transit. The device adopts a detachable suspension structure and is equipped with a dust removal unit, thereby solving the technical problems of existing automatic detection devices and buses, such as the difficulty in installation, poor stability, and low measurement accuracy.

[0005] The present invention can be achieved through the following technical solutions:

[0006] An intelligent wear detection device for a rigid contact line of rail transit comprises a wear detection unit and a dust removal unit, both of which can move along a π-shaped busbar. The wear detection unit and the dust removal unit can be detached and hung directly below the π-shaped busbar equipped with the rigid contact line, with the dust removal unit in front and the wear detection unit in the rear along the moving direction.

[0007] The wear detection unit and the dust removal unit both include a traction mechanism and a suspension travel mechanism. The suspension travel mechanisms both adopt a symmetrical structure and are arranged on both sides of the π-shaped busbar. They can travel along the π-shaped busbar under the drive of the traction mechanism.

[0008] The wear detection unit also includes a display module, a wear detection module, and a travel detection module provided on the suspension travel mechanism. The wear detection module is used to detect the wear of the rigid contact line directly below the π-type busbar; the travel detection module is used to detect the travel information of the suspension travel mechanism along the π-type busbar; and the display module is used to input the wear detection operation and display the wear detection results.

[0009] The dust removal unit further comprises a cleaning mechanism, which is arranged directly below the rigid contact wire and is used to remove dust from the exposed surface of the rigid contact wire on the π-type busbar.

[0010] Furthermore, the suspended walking mechanism includes two walking mechanisms and a first locking mechanism. The two walking mechanisms are symmetrically arranged on both sides of the π-shaped bus. One of the walking mechanisms adopts a lateral folding structure. The first locking mechanism is used to lock one of the walking mechanisms with the other walking mechanism to facilitate the suspension installation of the wear detection device or to release the lock between one of the walking mechanisms and the other walking mechanism to facilitate the suspension disassembly of the wear detection device.

[0011] Furthermore, each of the walking mechanisms includes a support plate, and a plurality of running wheels and lateral limiting wheels are evenly spaced on the inner side of the upper portion of each support plate. The rolling surface of each running wheel contacts the upper surface of the lateral protrusion in the π-shaped bus, and the rolling surface of each lateral limiting wheel contacts the side surface of the lateral protrusion in the π-shaped bus.

[0012] The upper and lower parts of the support plate of one of the walking mechanisms are separated, and the connection between the two is a rotation connection.

[0013] Furthermore, the first locking mechanism includes two parallel and spaced movable rods, which are respectively located at the front and rear ends of the two walking mechanisms, wherein the two ends of one movable rod are respectively matched with the arc-shaped notches at the front ends of the support plates in the two walking mechanisms, and the two ends of the other movable rod are respectively matched with the arc-shaped notches at the rear ends of the support plates in the two walking mechanisms, and the middle rod portion of each movable rod is connected to the middle rod portion of the corresponding group of fixed rods through a plurality of springs, and the length of the middle rod portion of each movable rod is matched with the spacing between the two support plates.

[0014] The end of each movable rod is also matched with the corresponding knob.

[0015] Loosen the knob and manually pull down the two movable rods to disengage the movable rods from the corresponding arc-shaped notches, thereby releasing the lock between one walking mechanism and the other.

[0016] Manually pull the two movable rods upward to make the movable rods match the corresponding arc-shaped notches, and tighten the knobs to lock one of the walking mechanisms with the other.

[0017] Furthermore, two vertical limiting wheels are provided on each of the movable rods, and the rolling surface of each of the vertical limiting wheels cooperates with the groove on the bottom surface of the lateral protrusion in the π-shaped busbar;

[0018] The stroke detection module includes a rotary encoder arranged on a support plate of another traveling mechanism in the wear detection unit, and a rolling surface of the rotary encoder contacts an upper surface of a lateral protrusion in the π-shaped busbar.

[0019] Furthermore, the cleaning mechanism includes a strip-shaped push plate and a bracket in a push-pull structure, both of which are arranged along the length direction of the π-shaped busbar. An open channel with an inverted trumpet-shaped cross section is provided on the strip-shaped push plate along its length direction. A plurality of scrapers are evenly spaced and inserted on the inner wall of the open channel. Each scraper extends along the width direction of the π-shaped busbar, and its top surface is provided with a notch that cooperates with the exposed surface of the rigid contact line, wherein the bottom of the notch of the scraper in the odd or even position is provided with a vertically upward elastic plate-shaped tongue;

[0020] A second locking mechanism is provided at one end of the strip-shaped push plate, and the second locking mechanism is used to lock or unlock the strip-shaped push plate and the bracket, so as to realize the pushing, pulling, disassembly and installation of the strip-shaped push plate.

[0021] Furthermore, the second locking mechanism includes two support blocks arranged on the outside of one end of the strip push plate, each of the support blocks is arranged on the bracket, and the inner side thereof is matched with the outer shape of the strip push plate, and a movable pin is also provided on it. The movable pin passes through the corresponding support block and cooperates with the strip push plate to achieve locking or unlocking of the strip push plate.

[0022] Furthermore, the wear detection unit also includes a box body, the top surface of the box body is connected to the π-type busbar through a suspension walking mechanism, an opening is provided on the top surface of the box body, a dust cover is provided around the opening, a wear detection module is provided inside the box body, facing the opening, a display module is provided on the side thereof, and a traction mechanism, a handle and a plurality of C-shaped support frames are provided on the bottom surface thereof.

[0023] A charging port, a remaining power display port, a switch button, and a warning light are provided on one side of the box body adjacent to the display module, and a warning light and an openable cable compartment are also provided on the other adjacent side;

[0024] The dust removal unit also includes a dust collection box, which is arranged directly below the cleaning mechanism and is used to collect dirt after dust removal. The two sides of the dust collection box are respectively connected to the bottom of the suspension walking mechanism, and a traction mechanism, a handle and a plurality of placement support frames are provided at the bottom of the dust collection box;

[0025] A plurality of foot pads are provided on the top of the suspension walking mechanism; and the traction mechanism adopts a manual traction structure of a hand-pulled traction rope type.

[0026] A detection method based on the above-mentioned intelligent wear detection device for rail transit rigid contact wire includes the following steps:

[0027] Step 1: Enter the road section information of the detection anchor section on the display module, select the detection mode, and click the start detection touch key;

[0028] Step 2: Pull the traction rope of the wear detection unit to drive the wear detection unit and the dust removal unit to move along the π-shaped busbar simultaneously, pushing the cleaning mechanism to clean the exposed surface of the rigid contact line. At the same time, the stroke detection module performs stroke detection, and the stroke information is used to activate the wear detection module to start the wear condition detection;

[0029] Step 3: Display the wear detection results on the display module at time intervals or in real time, including abnormal position pictures, wear state change curves, and contour points and lines of the rigid contact line cross section.

[0030] Furthermore, the wear detection module is used to obtain each contour point of the rigid contact line cross section, calculate the slope of the line connecting each two adjacent contour points, find the contour points corresponding to the slope mutation, namely the left wear boundary point and the right wear boundary point, and calculate the difference between the horizontal coordinates corresponding to the left wear boundary point and the right wear boundary point to obtain the wear amount of the rigid contact line.

[0031] The beneficial technical effects of the present invention are as follows:

[0032] 1. The wear detection device of the present invention can remove dust before testing, effectively eliminating the interference of dirt on laser scanning data, and can more accurately identify the interface of the rigid contact line with sudden changes in shape, thereby improving the accuracy of wear testing;

[0033] 2. With the help of a symmetrically arranged suspension traveling mechanism, the entire wear detection device is suspended directly below the π-type bus and can travel along the π-type bus, which is convenient for wear detection. At the same time, one of the traveling mechanisms has a lateral folding function, which works together with the locking mechanism. Regardless of suspension installation or disassembly, it has strong operability and practicality.

[0034] 3. Add lateral limiting wheels and vertical limiting wheels. With the help of the locking mechanism, they can cooperate with the grooves on the side and bottom surfaces of the lateral protrusions in the π-type bus to achieve positioning and fit. At the same time, the running wheel can be positioned on the upper surface of the lateral protrusions in the π-type bus, ensuring that the running wheel can move stably along the π-type bus, avoiding running deviation, and providing a stable testing environment for subsequent wear testing.

[0035] 3. The push-pull cleaning mechanism facilitates the separate cleaning of the scraper, and the second locking mechanism ensures the connection stability between the strip push plate and the bracket, providing a guarantee for the smooth progress of the cleaning operation. At the same time, two types of scrapers with elastic plate tongues and non-elastic plate tongues are arranged alternately, which can not only scrape off the dirt on the side of the rigid contact line, but also scrape off the dirt on its bottom surface, making the cleaning more thorough and the effect better.

[0036] 4. The wear detection device of the present invention can realize semi-automatic detection of rigid contact lines. Compared with existing handheld detection devices, it does not require too much manpower investment and has high measurement efficiency. The wear detection module composed of laser contour sensors and cameras has high detection accuracy and can provide maintenance personnel with wear position images, which is conducive to quickly identifying faulty lines and improving maintenance efficiency. At the same time, the stroke information of the stroke detection module is used as a starting signal to control the wear detection module to start working, which can effectively save the power consumption of the entire device, avoid unnecessary power loss, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the coordination between the overall structure of the present invention and the π-type busbar;

[0038] Figure 2 The overall structure of the wear detection unit of the present invention is shown in FIG. Figure 1 , one of the walking mechanisms is in a sideways folding state;

[0039] Figure 3 The overall structure of the wear detection unit of the present invention is shown in FIG. Figure 2 ;

[0040] Figure 4 The overall structure of the wear detection unit of the present invention is shown in FIG. Figure 3 ;

[0041] Figure 5 The overall structure of the wear detection unit of the present invention is shown in FIG. Figure 4 ;

[0042] Figure 6 Schematic side projection of the overall structure of the wear detection unit of the present invention;

[0043] Figure 7Schematic diagram of the matching structure of the movable rod and the fixed rod in the first locking mechanism of the present invention;

[0044] Figure 8 The overall structure of the dust removal unit of the present invention is shown in FIG. Figure 1 , one of the walking mechanisms is in a sideways folding state;

[0045] Figure 9 The overall structure of the dust removal unit of the present invention is shown in FIG. Figure 2 ;

[0046] Figure 10 The overall structure of the dust removal unit of the present invention is shown in FIG. Figure 3 ;

[0047] Figure 11 The overall structure of the dust removal unit of the present invention is shown in FIG. Figure 4 ;

[0048] Figure 12 It is a structural schematic diagram of the strip push plate of the present invention;

[0049] Figure 13 It is a side projection schematic diagram of the overall structure of the present invention;

[0050] Figure 14 Schematic diagram of width and height of wear detection according to the present invention;

[0051] Among them, 1-π-type bus, 2-wear detection unit, 21-suspension walking mechanism, 211-walking mechanism, 2111-support plate, 2112-walking wheel, 2113-lateral limiting wheel, 212-locking mechanism, 2121-movable rod, 2122-fixed rod, 2123-flower-shaped knob, 2124-connector, 2125-vertical limiting wheel, 22-display module, 23-stroke detection module, 24-box, 241-charging port, 242-remaining power display port , 243-switch button, 244-warning light, 245-openable cable compartment, 25-handle, 26-C-type support frame, 27-dust cover, 28-foot pad, 29-pull ring, 3-dust removal unit, 31-cleaning mechanism, 311-strip push plate, 3111-opening channel, 3112-scraper, 3113-elastic plate tongue, 312-bracket, 313-support block, 314-movable latch, 32-dust box, 33-placement support frame, 34-lateral cleaning brush. DETAILED DESCRIPTION

[0052] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0053] like Figure 1-13As shown, the present invention provides an intelligent wear detection device for a rigid contact line of rail transit, comprising a wear detection unit 2 and a dust removal unit 3, both of which can move along a π-type bus 1. They can be disassembled and hung directly below the π-type bus 1 equipped with the rigid contact line, and along the moving direction, the dust removal unit 3 is in front and the wear detection unit 2 is in the back. The wear detection unit 2 and the dust removal unit 3 both include a traction mechanism and a suspension walking mechanism 21. The suspension walking mechanism 21 adopts a symmetrical structure and is arranged on both sides of the π-type bus 1. They can move along the π-type bus 1 under the drive of the traction mechanism. Walking, the wear detection unit 2 also includes a display module 22, a wear detection module and a stroke detection module 23 arranged on the suspension walking mechanism, the wear detection module is used to perform wear detection on the rigid contact line directly below the π-type bus; the stroke detection module 23 is used to detect the stroke information of the suspension walking mechanism walking along the π-type bus; the display module 22 is used to enter the wear detection operation and display the wear detection results; the dust removal unit 3 also includes a cleaning mechanism 31, the cleaning mechanism 31 is arranged directly below the rigid contact line, and is used to remove dust from the exposed surface of the rigid contact line on the π-type bus 1. The invented intelligent wear detection device can remove dust before detection, effectively solving the interference of dirt on laser scanning data, and can more accurately identify the interface of the rigid contact line with sudden changes in appearance, thereby improving the accuracy of wear testing. Since the rigid contact line is usually installed in a high-altitude suspended manner and connected to the π-type bus with a detachable structure, it is convenient for operators to install and disassemble the wear detection device and the π-type bus, thereby improving operability. At the same time, the dust removal unit is assembled with the π-type bus with a detachable structure, which has higher operability and can selectively determine whether to install the dust removal mechanism according to actual conditions. It has great value for promotion and application.

[0054] The details are as follows:

[0055] like Figure 2-7 As shown, the suspension running mechanism 21 includes two running mechanisms 211 and a first locking mechanism 212. The two running mechanisms 211 are symmetrically arranged on both sides of the π-shaped busbar. Their structures are almost the same. One of the running mechanisms 211 adopts a lateral folding structure, as shown in FIG. Figure 4 As shown, the first locking mechanism 32 is used to lock one of the traveling mechanisms 211 with the other traveling mechanism 211 to suspend the wear detection device or to release the lock between one of the traveling mechanisms 211 and the other traveling mechanism 211 to disassemble the wear detection device.

[0056] Each walking mechanism 211 includes a support plate 2111, and a plurality of running wheels 2112 and lateral limiting wheels 2113 are evenly spaced on the inner side of the upper part of each support plate 2111, such as two each. The rolling surface of each running wheel 2112 contacts the upper surface of the lateral protrusion in the π-type bus 1, and the rolling surface of each lateral limiting wheel 313 contacts the side surface of the lateral protrusion in the π-type bus 1. Figure 6 As shown, we can set the support plate 2111 along the length direction of the π-type bus 1 to facilitate the inner running wheel 2112, the side limiting wheel 2113 and the corresponding position of the π-type bus 1. At the same time, by setting corresponding connecting parts, each running wheel 2112 can be closer to the central position of the π-type bus 1 relative to the side limiting wheel 2113. In this way, with the help of the side limiting wheel 2113, the lateral position of the running wheel 2112 on the upper surface of the lateral protrusion in the π-type bus 1 can be limited to ensure the stability of walking. In addition, the upper and lower parts of the support plate of one of the walking mechanisms are separated, and the connection between the two is a rotating connection. A door-folding hinge rotating connection structure can be used to give it a manual lateral folding function, thereby being able to drive the components connected thereto to fold in the direction away from the π-type bus 1, so as to facilitate the installation and disassembly of the entire wear detection device, i.e., the wear detection unit or the dust removal unit and the π-type bus 1, such as holding the support plate to drive one of the walking mechanisms to fold 90 degrees in the direction away from the π-type bus, or reverse movement to fold 90 degrees in the direction close to the π-type bus.

[0057] The first locking mechanism 212 includes two parallel and spaced movable rods 2121, which are respectively located at the front and rear ends of the two walking mechanisms 21, wherein the two ends of one movable rod 2121 are respectively and simultaneously matched with the arc-shaped recesses at the front ends of the support plates 2111 in the two walking mechanisms 21, and the two ends of the other movable rod 2121 are respectively and simultaneously matched with the arc-shaped recesses at the rear ends of the support plates 2111 in the two walking mechanisms. For example, a step is provided at the end of each movable rod 2121 so that it can be stuck in the arc-shaped recess, and the length of the middle rod portion of each movable rod 2121 is matched with the spacing between the two support plates 2111, and the end of each movable rod is also matched with the knob. If it is threaded with the flower-shaped knob 2123, the two movable rods are manually pulled upward to make the movable rods match the corresponding arc-shaped notches, and the knob is tightened from the outside to make the flower-shaped knob 323 abut the outer side of the support plate 2111, so that the support plate around the arc-shaped notch is tightly pressed on the step of the movable rod, and the support plate 2111 and the movable rod 2121 are locked, so that the rotating support plate is erected, and one of the walking mechanisms is locked with the other walking mechanism; on the contrary, the flower-shaped knob 2123 is loosened, and the pressure between the support plate and the movable rod is released, and the two movable rods are manually pulled downward to make the movable rods disengage from the corresponding arc-shaped notches to release the lock between one walking mechanism and the other walking mechanism;

[0058] In order to prevent the movable rod 2121 from being lost, two fixed rods 2122 are set on the inner side of the lower part of the two support plates 2111 along the width direction of the π-shaped bus 1. They are set parallel to the two movable rods 2121 and arranged up and down, so that the movable rod 2121 can be connected to the corresponding fixed rod 2122 by a spring. Figure 7 As shown, a joint 2124 can be provided at each spring connection position of the movable rod 2121 and the fixed rod 2122 to facilitate the spring connection. In this way, the two movable rods 2121 are manually pulled upward to make the movable rods 2121 match with the corresponding arc-shaped recesses. At this time, the foldable support plate 2111 must be erected, and the flower-shaped knob is tightened to lock one walking mechanism with the other walking mechanism. At this time, the running wheel 2112 and the lateral limiting wheel 2113 on the erected support plate 2111 are pressed toward the corresponding position of the π-type bus 1 and hung below the π-type bus 1;

[0059] Similarly, loosen the knob and manually pull down the two movable rods 2121 to disengage the movable rods 2121 from the corresponding arc-shaped recesses, thereby releasing the lock between one walking mechanism and the other walking mechanism. The corresponding support plate 2111 can be folded outward, making it convenient for the entire wear detection device, i.e., the wear detection unit or the dust removal unit, to be disassembled. At this time, the two movable rods 321 are connected to the corresponding fixed rods 322 through springs, which have a certain traction effect and hang on one side so as not to be lost due to misplacement.

[0060] In order to further ensure the running stability of the walking wheel 2112, we can also set two vertical limiting wheels 2124 on each movable rod 2121, especially the movable rod in the wear detection unit. The rolling surface of each vertical limiting wheel 2124 cooperates with the groove on the bottom surface of the lateral protrusion in the π-type bus 1 to limit the left and right movement of the walking wheel 2112 on the π-type bus 1, ensuring that the walking wheel 2112 can move as much as possible along the front and rear direction of the π-type bus 1.

[0061] The stroke detection module 23 includes a rotary encoder arranged on a support plate 2111 of another walking mechanism in the wear detection unit, which can be arranged in the middle of the support plate 2111, and the running wheel 2112 and the lateral limit wheel 2113 are arranged at the end of the support plate 2111. The rolling surface of the rotary encoder also contacts the upper surface of the lateral protrusion in the π-type bus 1 to ensure synchronous movement with the running wheel to realize stroke detection.

[0062] In order to facilitate the transportation and protection of the wear detection module, the wear detection unit also includes a box body 24. The top surface of the box body 24 is connected to the π-type bus 1 through a suspension walking mechanism 21, such as being connected to the bottom ends of the two support plates of the suspension walking mechanism to achieve suspension installation. A wear detection module is arranged inside the box body 24, a display module 22 is arranged on its side, and a traction mechanism, a handle 25 and a plurality of C-shaped support frames 26 are arranged on its bottom surface. The box body 22 can be an open structure, and the wear detection module inside it adopts laser scanning to obtain the contour information of the rigid contact line. Therefore, the wear detection module can be arranged inside the opening, and its detection end detects the rigid contact line through the opening of the box body 24.

[0063] Taking into account the environmental conditions inside the tunnel, we set the opening on the top surface of the box 24, sealed it with transparent glass, and set a dust cover 27 around the opening. This can not only protect the wear detection module, but also reduce dust and other substances falling on the wear detection module to avoid affecting the detection accuracy.

[0064] In addition, foot pads 28 are provided at both ends of the top of each support plate 2111. During normal transportation, the box body 24 is on top with its opening facing downward to protect the wear detection model inside. Transportation and storage are achieved with the help of the handles 25 and foot pads 28. When the wear detection device is installed on the π-type bus, the box body 24 needs to be at the bottom and placed on the vehicle ladder. At this time, the C-shaped support frame 26 on the bottom of the box body 24 plays a supporting and placing role. The traction mechanism adopts a hand-pull traction rope structure. If a pull ring 29 is provided on the bottom of the box body, the traction rope is tied to the pull ring 29. Manually pulling the traction rope can drive the entire wear detection device to move along the π-type bus.

[0065] A charging port 241, a remaining power display port 242, a switch button 243, and a warning light 244 are provided on one side of the housing 24, adjacent to the display module 22. A warning light 244 and an openable cable compartment 245 are also provided on the other adjacent side. Since rigid contact line testing is typically performed at night, often in tunnels where the environment is relatively dark, the warning light serves to alert personnel to the presence of active equipment and the need for attention. The openable cable compartment can temporarily store cables connecting components such as the display module to prevent them from falling and facilitate transportation.

[0066] The display module 22 is configured as a touch screen to facilitate operators to perform detection operations, such as inputting detection line information such as name, section, anchor section number, running direction, etc., setting a touch screen button to start detection, displaying detection results, etc.

[0067] For the dust removal unit 3, as Figure 8-13As shown, the cleaning mechanism 31 and the two walking mechanisms 211 half surround the π-type bus 1, and the walking mechanism 211 drives the cleaning mechanism 31 to move along the π-type bus to complete the cleaning of the rigid contact line on the bottom surface of the π-type bus, providing a good detection environment for the subsequent wear detection unit. Specifically, the cleaning mechanism 31 includes a strip push plate 311 and a bracket 312 with a push-pull structure, which are both arranged along the length direction of the π-type bus 1, as shown in FIG. Figure 12 As shown, an open channel 3111 with an inverted trumpet-shaped cross section is provided on the strip push plate 311 along its length direction, and a plurality of scrapers 3112 are evenly spaced and inserted on the inner wall of the open channel 3111, each scraper 3112 extends along the width direction of the π-type bus 1, and its top surface is provided with a recess that matches the exposed surface of the rigid contact line, and the recess is generally in the shape of an inverted "X", so that the dirt on the side of the rigid contact line can be scraped off, and the bottom of the recess of the scraper 3112 in the odd or even position is provided with a vertically upward elastic plate-shaped tongue 3113; the cross section of the open channel 3111 runs through the top surface to the bottom surface of the strip push plate to facilitate the falling of dirt, and the two ends of the bracket 312 are in an inverted π-shaped structure, with a strip push plate provided in the middle. The bayonet 311 cooperates with the inverted π-shaped structure and the cross bar is connected to the inner side of the two support plates. The ends of its two vertical arms support the bayonet to achieve push-pull cooperation with the strip push plate 311. Such a push-pull structural design can easily pull the strip push plate 311 together with the scraper from the bracket 312, which is convenient for cleaning the scraper 3112. At the same time, due to the long-term sliding friction between the rigid contact line and the pantograph, the arc protrusions at the bottom are mostly worn flat. Therefore, an elastic plate-shaped tongue 3113 is provided at the bottom of the recess of some scrapers 312, which can be made of wear-resistant material. It can clean the dirt that enters the bottom surface of the rigid contact line after the scraper 312 is cleaned, ensuring thorough cleaning. At the same time, the elastic characteristics of the elastic plate-shaped tongue can promote close contact with the rigid contact line, further improving the cleaning effect.

[0068] In order to increase the firmness of the connection between the strip push plate 311 and the bracket 312, as shown in FIG. Figure 8-10When the handle is pulled out of the lock hole 314, the locking pin 314 is locked and the locking pin 314 is locked.

[0069] In order to better collect dirt, the bottom surfaces of the two support plates of the suspension walking mechanism in the dust removal unit 3 are respectively connected to the two sides of the dust box 32. A latch-type connection structure can be adopted to facilitate the disassembly of the dust box 32 for cleaning. The dust box 32 is arranged directly below the cleaning mechanism 31 and is in the shape of an open box for collecting dirt after dust removal.

[0070] To facilitate transportation, the bottom of the dust box 32 is equipped with a handle 25, a traction mechanism, and multiple support brackets 33. Multiple foot pads 28 are located on the top of each support plate. The traction mechanism utilizes a manual traction mechanism using a hand-pulled traction rope. During normal transportation, the cleaning mechanism is positioned below and the dust box 32 is positioned above to protect the scraper. The handle 25 and foot pads 28 facilitate transportation and storage. When the dust removal unit is mounted on a π-type bus, the cleaning mechanism is positioned above and placed on a vehicle ladder. The support brackets on the bottom of the dust box 32 provide support and placement. The traction mechanism utilizes a hand-pulled traction rope structure. For example, a pull ring 29 is provided on the bottom of the dust box. A traction rope is tied to the pull ring and manually pulled to move the entire dust removal unit along the π-type bus.

[0071] In addition, a lateral cleaning brush 34 is provided on the inner side of the upper portion of each support plate. The lateral cleaning brush 34 is used to clean the upper surface of the lateral protrusion in the π-type busbar 1 to ensure smooth running of the running wheels.

[0072] The present invention also provides a detection method based on the above-mentioned intelligent wear detection device for rail transit rigid contact wire, which is specifically as follows:

[0073] S1. Use the suspension travel mechanism to install the wear detection unit and dust removal unit on the π-type busbar.

[0074] First, hold the handle and transport the dust removal unit to the car ladder, then turn it over and support it on the ground with the C-shaped support frame, then loosen the flower-shaped knob, hold the flower-shaped knobs on the front and rear sides of the device, and drive the corresponding movable rod to move downward to disengage it from the arc-shaped notch on the support plate, so that one of the walking mechanisms can be folded 90 degrees to the outside, and then hold the handle at the bottom of the dust collection box to drive the dust removal unit to move upward to just below the π-shaped bus, then fold one of the walking mechanisms in the opposite direction 90 degrees, and then hold the flower-shaped knob to drive the corresponding movable rod to move upward to match the arc-shaped notch on the support plate, place the lateral limit wheel, vertical limit wheel and traveling wheel in the corresponding positions, tighten the flower-shaped knob to install the dust removal unit on the π-shaped bus, and then repeat the above process to install the wear detection unit behind the dust removal unit;

[0075] S2. Wear detection

[0076] S21. Enter the section information of the anchor section to be tested, such as name, section, anchor section number, running direction, etc., on the display module, and then select a test mode, such as automatic mode or manual mode. In the automatic mode, the wear test results are displayed on the display module at time intervals as long as the traction mechanism is pulled. In the manual mode, the wear test results are displayed on the display module in real time, and then click the start test touch key.

[0077] S22. Pulling the traction rope of the wear detection unit drives the wear detection unit and the dust removal unit to move simultaneously along the π-shaped busbar, pushing the cleaning mechanism to clean the exposed surface of the rigid contact wire. Simultaneously, the stroke detection module performs stroke detection, and the stroke information is used to activate the wear detection module to start wear condition detection, thereby avoiding unnecessary power loss, effectively saving power consumption of the entire device, and extending the service life;

[0078] The wear detection module may include a laser contour sensor, a camera, and a fill light. The laser contour sensor is used to detect the contour information of the rigid contact line, such as the lateral contour information, to provide a data basis for subsequent wear detection. The camera is used to collect image information of the wear position of the rigid contact line to facilitate subsequent operators to troubleshoot. The fill light is used to fill in the working environment of the wear detection module to provide a better working environment for the laser contour sensor and camera, thereby ensuring the accuracy of data collection.

[0079] Since the contact surface between the rigid contact wire and the pantograph is an arc surface, the slope corresponding to each contour point on its cross section changes continuously. When the rigid contact wire is worn, its slope will suddenly change. Therefore, the present invention obtains each contour point of the rigid contact wire cross section, calculates the slope of the line connecting each two adjacent contour points, and finds the contour points corresponding to the sudden change in slope, which are the left wear boundary point and the right wear boundary point. Figure 14As shown, the difference between the two slopes of each adjacent slope can be calculated and compared with the threshold to obtain the wear boundary point. Then, the difference between the horizontal coordinates corresponding to the left wear boundary point and the right wear boundary point is calculated. The wear amount is converted into the empirical comparison table of wear width and height obtained from many years of experience in railway engineering, thereby obtaining the wear amount of the rigid contact line.

[0080] Step 3: Display the wear detection results on the display module at time intervals or in real time, including abnormal position pictures, wear state change curves, contour points and lines of the rigid contact line cross section, etc.

[0081] Although specific embodiments of the present invention are described above, those skilled in the art should understand that these are merely examples and that various changes or modifications may be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is limited by the appended claims.

Claims

1. An intelligent wear detection device for rigid contact wires in rail transit, characterized by: It includes a wear detection unit and a dust removal unit, both of which can move along the π-type bus. They can be disassembled and hung directly below the π-type bus equipped with a rigid contact line. In the moving direction, the dust removal unit is in front and the wear detection unit is behind. The wear detection unit and the dust removal unit both include a traction mechanism and a suspension travel mechanism. The suspension travel mechanisms both adopt a symmetrical structure and are arranged on both sides of the π-shaped busbar. They can travel along the π-shaped busbar under the drive of the traction mechanism. The wear detection unit also includes a display module, a wear detection module, and a travel detection module provided on the suspension travel mechanism. The wear detection module is used to detect the wear of the rigid contact line directly below the π-type busbar; the travel detection module is used to detect the travel information of the suspension travel mechanism along the π-type busbar; and the display module is used to input the wear detection operation and display the wear detection results. The dust removal unit further includes a cleaning mechanism, which is arranged directly below the rigid contact wire and is used to remove dust from the exposed surface of the rigid contact wire on the π-type busbar; The suspension running mechanism includes two running mechanisms and a first locking mechanism. The two running mechanisms are symmetrically arranged on both sides of the π-shaped busbar. One of the running mechanisms adopts a sideways folding structure. The first locking mechanism is used to lock one running mechanism with the other running mechanism to facilitate the suspension installation of the wear detection device or to release the lock between one running mechanism and the other running mechanism to facilitate the suspension removal of the wear detection device. Each of the walking mechanisms includes a support plate, and a plurality of running wheels and lateral limiting wheels are evenly spaced on the inner side of the upper portion of each support plate. The rolling surface of each running wheel contacts the upper surface of the lateral protrusion in the π-shaped bus, and the rolling surface of each lateral limiting wheel contacts the side surface of the lateral protrusion in the π-shaped bus. The upper and lower parts of the support plate of one of the walking mechanisms are separated, and the connection between the two is a rotating connection; The first locking mechanism includes two parallel and spaced movable rods, respectively located at the front and rear ends of the two walking mechanisms, wherein the two ends of one movable rod are respectively matched with the arc-shaped notches at the front ends of the support plates in the two walking mechanisms, and the two ends of the other movable rod are respectively matched with the arc-shaped notches at the rear ends of the support plates in the two walking mechanisms, and the middle rod portion of each movable rod is connected to the middle rod portion of the corresponding group of fixed rods through multiple springs, and the length of each middle rod portion of the movable rod is matched with the spacing between the two support plates. The end of each movable rod is also matched with the corresponding knob. Loosen the knob and manually pull down the two movable rods to disengage the movable rods from the corresponding arc-shaped notches, thereby releasing the lock between one walking mechanism and the other. Manually pull the two movable rods upward to make the movable rods match the corresponding arc-shaped notches, and tighten the knobs to lock one of the walking mechanisms with the other.

2. The intelligent wear detection device for rigid contact wire of rail transit according to claim 1 is characterized in that: Two vertical limiting wheels are provided on each of the movable rods, and the rolling surface of each vertical limiting wheel cooperates with the groove on the bottom surface of the lateral protrusion in the π-shaped busbar; The stroke detection module includes a rotary encoder arranged on a support plate of another traveling mechanism in the wear detection unit, and a rolling surface of the rotary encoder contacts an upper surface of a lateral protrusion in the π-shaped busbar.

3. The intelligent wear detection device for rail transit rigid contact wire according to claim 1, characterized in that: The cleaning mechanism comprises a strip-shaped push plate and a bracket in a push-pull structure, both of which are arranged along the length direction of the π-shaped busbar. An open channel with an inverted trumpet-shaped cross section is provided on the strip-shaped push plate along its length direction. A plurality of scrapers are evenly spaced and inserted on the inner wall of the open channel. Each scraper extends along the width direction of the π-shaped busbar and has a notch on its top surface that matches the exposed surface of the rigid contact line. The bottom of the notch of the scraper in the odd or even position is provided with a vertically upward elastic plate-shaped tongue. A second locking mechanism is provided at one end of the strip-shaped push plate, and the second locking mechanism is used to lock or unlock the strip-shaped push plate and the bracket, so as to realize the pushing, pulling, disassembly and installation of the strip-shaped push plate.

4. The intelligent wear detection device for rail transit rigid contact wire according to claim 3 is characterized in that: The second locking mechanism includes two support blocks arranged on the outside of one end of the strip push plate, each of the support blocks is arranged on the bracket, and the inner side thereof is matched with the outer shape of the strip push plate, and a movable pin is also provided on it. The movable pin passes through the corresponding support block and cooperates with the strip push plate to achieve locking or unlocking of the strip push plate.

5. The intelligent wear detection device for rail transit rigid contact wire according to claim 1 is characterized in that: The wear detection unit also includes a box body, the top surface of which is connected to the π-shaped busbar via a suspension walking mechanism, an opening is provided on the top surface of the box body, a dust cover is provided around the opening, a wear detection module is provided inside the box body, facing the opening, a display module is provided on the side thereof, a traction mechanism, a handle and a plurality of C-shaped support frames are provided on the bottom surface thereof, a charging port, a remaining power display port, a switch button and a warning light are provided on a side surface of the box body adjacent to the display module, and a warning light and an openable cable compartment are also provided on the other adjacent side surface; The dust removal unit also includes a dust collection box, which is arranged directly below the cleaning mechanism and is used to collect dirt after dust removal. The two sides of the dust collection box are respectively connected to the bottom of the suspension walking mechanism, and a traction mechanism, a handle and a plurality of placement support frames are provided at the bottom of the dust collection box; A plurality of foot pads are provided on the top of the suspension walking mechanism; and the traction mechanism adopts a manual traction structure of a hand-pulled traction rope type.

6. A detection method based on the intelligent wear detection device for rail transit rigid contact line according to claim 1, characterized in that The following steps are involved: Step 1: Enter the road section information of the detection anchor section on the display module, select the detection mode, and click the start detection touch key; Step 2: Pull the traction rope of the wear detection unit to drive the wear detection unit and the dust removal unit to move along the π-shaped busbar simultaneously, pushing the cleaning mechanism to clean the exposed surface of the rigid contact line. At the same time, the stroke detection module performs stroke detection, and the stroke information is used to activate the wear detection module to start the wear condition detection; Step 3: Display the wear detection results on the display module at time intervals or in real time, including abnormal position pictures, wear state change curves, and contour points and lines of the rigid contact line cross section.

7. The detection method of the intelligent wear detection device for rail transit rigid contact wire according to claim 6, characterized in that: The wear detection module is used to obtain the contour points of the rigid contact line cross section, calculate the slope of the line connecting each two adjacent contour points, find the contour points corresponding to the slope mutation, namely the left wear boundary point and the right wear boundary point, calculate the difference between the horizontal coordinates corresponding to the left wear boundary point and the right wear boundary point, and thus obtain the wear amount of the rigid contact line.

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