A device for measuring the profile wear of a switch blade and a method of using the same

Abstract

This invention relates to the field of switch rail profile measurement technology, specifically disclosing a switch rail profile wear measurement device, comprising a car body. A drive assembly is rotatably mounted on the lower end of the car body. The drive assembly includes a fixed shaft rotatably connected to the car body. Assembly frames are provided at both ends of the fixed shaft at the bottom of the car body. The upper end of each assembly frame is fixedly connected to the bottom of the car body and rotatably connected to the fixed shaft. A crossbar is fixedly installed between the two assembly frames. Two sliding blocks are slidably mounted on the bottom of the crossbar. A measuring frame is fixedly mounted at the end of each sliding block. A laser rangefinder is fixedly mounted on the upper and lower ends of the measuring frame. This invention, by setting a rotatable measuring frame, allows the laser rangefinder on the measuring frame to adaptively adjust according to the position and angle of the switch rail. The laser rangefinder can measure the lateral and vertical wear of the switch rail, and can continuously take measurements of the switch rail during the car body's movement.

Description

Technical Field

[0001] This invention relates to the field of switch rail measurement technology, and in particular to a switch rail profile wear measuring device and its usage method. Background Technology

[0002] In railway and urban rail transit lines, the track connection equipment that enables locomotives and rolling stock to switch from one line to another is called a turnout. A turnout mainly consists of a switch, a connecting part, a frog, and a guard rail. The switch rail is the main part of the switch, and the locomotives and rolling stock are guided in and out of the turnout by the operation of the switch rail. The contact between train wheels and rails is fundamental to train operation. Train loads exert pressure on the rail surface, and prolonged contact and friction lead to wear. Rail wear is categorized into two types: vertical wear at the rail top and side wear at the rail head, abbreviated as vertical wear and side wear, respectively. When rail wear occurs, the non-working edge profile of the rail remains constant. By clamping the non-working edge of the main rail head and fixing the center opening of the rail wear measuring ruler, the wear of the working edge profile can be directly measured. However, the shape of the switch rail changes, with its top surface gradually becoming higher and wider. Therefore, the rail wear measuring instrument cannot achieve a fixed position to complete the switch rail wear measurement. Currently, switch rail side grinding is mainly measured using vernier calipers, which is difficult to operate and produces inaccurate measurement data. If it is necessary to measure each key section of the switch rail head, it will consume a lot of time. At the same time, after measuring the side grinding of the switch rail, it is impossible to intuitively compare the original profile of the switch rail with the side-ground profile. It can be seen that the lack of a reference system and the cumbersome procedures result in large measurement errors in the side grinding of turnout switch rails. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a turnout tip rail profile wear measuring device and its usage method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A turnout tip rail profile wear measuring device includes a car body. A drive assembly is rotatably mounted on the lower end of the car body. There are two sets of drive assemblies. Each drive assembly includes a fixed shaft rotatably connected to the car body. A protective shell is fixedly connected to one side of the outer wall of the car body. Assembly frames are provided at both ends of the fixed shaft at the bottom of the car body. The upper end of each assembly frame is fixedly connected to the bottom of the car body and rotatably connected to the fixed shaft. A crossbar is fixedly installed between the two assembly frames. Two sliding blocks are slidably mounted on the bottom of the crossbar. A measuring frame is fixedly mounted at the end of each of the two sliding blocks. A laser rangefinder is fixedly mounted on the upper and lower ends of the measuring frame, and an adjustment frame is slidably connected to the end of the measuring frame. An mounting block is fixedly mounted on the lower end of the assembly frames fixed at both ends of the other set of fixed shafts. Sliding rods are fixedly mounted on both ends of the mounting blocks. A first measuring component and a second measuring component are slidably mounted on the two sets of sliding rods, respectively. The first measuring components are located at both ends of the mounting blocks, and the two sets of second measuring components are located between the two sets of first measuring components. The first measuring component includes a first mounting bracket and a sliding bracket that slide against each other. The upper and lower ends of the first mounting bracket are provided with measuring probes. The second measuring component includes a second mounting bracket that is also provided with measuring probes at its upper and lower ends. A clearance bracket is slidably connected to the second mounting bracket. The measuring probe includes a fixed sleeve that is fixedly connected to the first mounting bracket and the second mounting bracket. A fixed block is fixedly installed inside the fixed sleeve. A telescopic spring is fixedly connected to the bottom of the fixed block. A contact measuring head is fixedly connected to the lower end of the telescopic spring, and the contact measuring head is slidably connected to the lower end of the fixed sleeve.

[0005] Preferably, the drive assembly further includes rollers fixedly mounted at both ends of a fixed shaft, and a control box is provided on the fixed shaft.

[0006] Preferably, a first mounting base and a second mounting base are slidably mounted on one set of sliding rods, and a third mounting base and a fourth mounting base are slidably mounted on another set of sliding rods. The two sets of first measuring components and second measuring components are sequentially connected to the first mounting base, the fourth mounting base, the second mounting base, and the third mounting base.

[0007] Preferably, the second measuring component further includes an adjusting column rotatably connected to the ends of the second and third mounting bases. A transmission component is connected between the lower end of the adjusting column and the sliding block. The transmission component includes a rotating rod fixedly connected to the end of the sliding block. The other end of the rotating rod is slidably connected to the bottom surface of the crossbar. A transmission belt is engaged with the outer wall of the lower end of the rotating rod. A driven rod is engaged with the other end of the transmission belt. The driven rod is fixedly connected to the bottom surface of the adjusting column at the end of the second mounting base. A transmission component is also connected between the lower end of the adjusting column rotatably connected to the end of the third mounting base and another sliding block.

[0008] Preferably, a limiting plate is fixedly installed on the upper surface of the first mounting base, the second mounting base, the third mounting base, and the fourth mounting base. An auxiliary component is provided between the limiting plates installed on the upper surface of the first and third mounting bases and between the limiting plates installed on the upper surface of the second and fourth mounting bases. The auxiliary component includes a fixed rod fixedly connected to the limiting plate, and a movable telescopic rod is slidably connected to both ends of the fixed rod. A probe head is fixedly connected to the lower end of the movable telescopic rod.

[0009] Preferably, the first measuring component further includes a first sliding column and a second sliding column that are slidably connected to the ends of the first mounting base and the fourth mounting base, wherein the first sliding column is fixedly connected to the outer wall of the sliding frame, and the second sliding column is fixedly connected to the outer wall of the first mounting frame.

[0010] Preferably, one of the fixed shafts has multiple tooth blocks fixedly installed on the outer wall of one end, and a first gear that meshes with the tooth blocks is rotatably installed on the assembly frame at a position corresponding to the tooth blocks.

[0011] Preferably, a cleaning component is rotatably mounted at the lower center of the mounting block. The cleaning component includes an extension rod rotatably connected to the center of the bottom surface of the mounting block. Second gears are rotatably mounted on both sides of the end of the extension rod. A third gear is rotatably mounted between the two second gears at the bottom surface of the end of the extension rod, and is meshed with the two second gears respectively. A drive motor for driving the second gear is fixedly mounted at the upper end of the extension rod corresponding to one of the second gears. Cleaning rods are fixedly mounted on both second gears.

[0012] Preferably, each of the two cleaning rods is provided with two sets of air guide pipes at its end, and one end of each set of air guide pipes is rotatably connected to the outer wall of the end of the cleaning rod. The air guide pipes can be rotated to adjust their blowing angle, so that the air blown out of the air guide pipes can be accurately blown onto the switch rails and main rails on both sides of the vehicle body, avoiding the influence of dust and other residues on the surface of the switch rails and main rails on the measurement accuracy. At the same time, after the air guide pipes and measuring frame are adjusted, the air blown out can clean the surface of the laser rangefinder set on the measuring frame.

[0013] A method for using a turnout switch rail profile wear measuring device includes the following steps: Step 1: When measuring the switch rail, place the device on the standard rail of the first stage, then push the car body. The four sets of rollers can move along the standard rail, so that the device moves along the standard rail of the first stage. At this time, the first and second measuring components located on the left side of the car body are staggered. The clearance frame slidably mounted on the second mounting frame slides upward to make way. Then the ends of the measuring probes on the first and second mounting frames are in contact with the upper end of the working edge of the standard rail. The side wear and vertical wear of the working edge of the standard rail can be measured respectively. The side wear measurement position of the standard rail is 16mm below the top of the standard rail. Similarly, the first and second measuring components located on the right side of the car body can measure the side wear and vertical wear of the working edge of the other standard rail. Step Two: Next, the user pushes the car body along the standard rail to enter the second stage. When the car body passes the turnout laterally, it enters the turnout under the guidance of the curved switch rail. One side of the roller on the car body presses against the curved switch rail and the straight main rail, while the other side always presses against the curved main rail. At this time, the second mounting bracket, which slides on the left sliding rod, adjusts its position. After adjustment, the clearance bracket on the second mounting bracket moves downward until its lower end contacts the non-working edge of the straight switch rail. The ends of the measuring probes on the second mounting bracket are respectively connected to the straight switch rail. The side grinding and vertical grinding measurement positions of the working edge are in contact, thereby measuring the side grinding and vertical grinding of the straight point rail. The side grinding measurement position of the straight point rail is 16mm below the top of the curved basic rail. At the same time, the end of the sliding frame located on the right side of the mounting block is always in contact with the non-working edge of the curved basic rail, and the end of the measuring probe on the first mounting frame is in contact with the working edge of the curved basic rail to measure the side grinding and vertical grinding of the curved basic rail. The side grinding measurement position of the curved basic rail is 16mm below the top of the curved basic rail. Step 3: When the car body passes through the turnout in a straight direction, the car body enters the turnout under the guidance of the straight switch rail. One side of the roller on the car body presses on the straight switch rail and the curved main rail, while the other side always presses on the straight main rail. At this time, the third mounting seat located on the right sliding rod slides to adjust its position. After adjustment, the clearance frame set on the third mounting seat moves downward to contact the non-working edge of the curved switch rail at its lower end. The end of the measuring probe set on the second mounting frame contacts the side grinding and vertical grinding measurement positions of the working edge of the curved switch rail, and then measures the side grinding and vertical grinding of the curved switch rail. Similarly, the side grinding measurement position of the curved switch rail is 16mm below the top of the straight main rail. At the same time, the end of the sliding frame set on the left side of the mounting block always keeps in contact with the non-working edge of the straight main rail, and the end of the measuring probe set on the first mounting frame contacts the working edge of the straight main rail to measure the side grinding and vertical grinding of the straight main rail. The side grinding measurement position of the straight main rail is 16mm below the top of the straight main rail. Step 4: The measuring frames located on both sides of the car body bottom surface rotate synchronously with the sliding block. When the car body passes through the turnout laterally, the measuring frame fixedly installed at the end of the sliding block rotates to be perpendicular to the straight switch rail. Then, the laser rangefinder installed on the measuring frame can measure the vertical and lateral wear of the straight switch rail. When the car body passes through the turnout straight, the measuring frame fixedly installed at the end of the sliding block rotates to be perpendicular to the tangent of the curved switch rail. The laser rangefinder installed on the measuring frame can measure the vertical and lateral wear of the curved switch rail. Furthermore, during the movement of the car body, the sliding block can slide on the bottom surface of the crossbar to adjust the position of the measuring frame. Step 5: When the sliding block rotates, under the action of the two transmission components, the driven rod can be driven to rotate through the transmission belt, so that the two adjusting columns follow the sliding block to adjust the measuring angle synchronously. When passing through the side switch, the second mounting bracket installed on the adjusting column is synchronously adjusted to be perpendicular to the straight switch rail. When passing through the straight switch, the second mounting bracket installed on the adjusting column is synchronously adjusted to be perpendicular to the tangent of the curved switch rail. Step Six: When the car body is moving on the track, the cleaning component located at the front end of the device can clean the rails on both sides. The two sets of cleaning rods can rotate with the second gear. When the two sets of cleaning rods rotate to be parallel to the car body, they are in an unused storage state. When the two sets of cleaning rods rotate to be perpendicular to the extension rod, they are in the use state. The air guide pipes located at the ends of the cleaning rods automatically adjust their angle and blow air to clean the switch rails and main rails on both sides of the car body.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting a rotatable measuring frame, allows for adaptive adjustment of the position and angle of the laser rangefinder's switch rail. The laser rangefinder can measure the lateral and vertical wear of the switch rail. Furthermore, during vehicle movement, the laser rangefinder can continuously take measurements of the switch rail. Simultaneously, the lateral and vertical wear measurements of the switch rail obtained by the laser rangefinder can be compared with those obtained by the measuring probe. This comparison can be used to check the accuracy of the lateral and vertical wear measurements obtained by the measuring probe, thus avoiding significant errors during the measurement process.

[0015] This invention utilizes a staggered arrangement of a first measuring component and a second measuring component. The first and second measuring components work together to measure the side wear and vertical wear of individual standard rails. Simultaneously, when the car body passes through a turnout laterally, the first and second measuring components work together to measure the side wear and vertical wear of the straight rail and curved main rail in the repulsion position. When the car body passes through a turnout in a straight direction, the first and second measuring components work together to measure the side wear and vertical wear of the straight main rail and curved rail in the repulsion position.

[0016] This invention, by setting up a transmission assembly, allows the rotating rod in the transmission assembly to drive the sliding block on which the measuring frame is mounted to rotate. Under the transmission action of the transmission belt, the driven rod drives the adjusting column to rotate synchronously. This enables the measuring probe mounted on the adjusting column to make synchronous adaptive adjustments to the switch rail, ensuring the accuracy of the laser rangefinder and measuring probe in measuring the wear on the switch rail. Furthermore, by using the laser rangefinder to perform targeted measurements on the switch rail, accurate values ​​of wear on the switch rail can be obtained.

[0017] This invention measures the side and vertical wear of the switch rails in a turnout using a laser rangefinder and a measuring probe, thus avoiding errors caused by a malfunction of one of the measuring devices and further ensuring the accuracy of the device's measurement of switch rail wear. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 This is a schematic diagram of the crossbar structure installation in an embodiment of the present invention; Figure 3 This is a schematic diagram of the cleaning component structure in an embodiment of the present invention; Figure 4 This is a schematic diagram showing the position distribution of the measuring frame in an embodiment of the present invention; Figure 5 This is a schematic diagram of the sliding rod structure installation in an embodiment of the present invention; Figure 6 This is a schematic diagram of the transmission belt structure in an embodiment of the present invention; Figure 7 This is a schematic diagram of the auxiliary component structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the first and second measuring components in an embodiment of the present invention; Figure 9 This is a schematic diagram of the first mounting bracket and sliding bracket structure in an embodiment of the present invention; Figure 10 This is a schematic diagram of the turnout structure in an embodiment of the present invention; Figure 11 As described in the embodiments of the present invention Figure 6 Enlarged view of a portion of point A in the middle; Figure 12 This is a schematic diagram of the measurement probe structure in an embodiment of the present invention; Figure 13 This is a schematic diagram of the basic track measurement state in an embodiment of the present invention; Figure 14 This is a schematic diagram of the switch rail measurement state in an embodiment of the present invention.

[0020] In the diagram: 1. Vehicle body; 2. Drive assembly; 201. Fixed shaft; 202. Roller; 203. Control box; 3. Protective shell; 4. Assembly frame; 5. Crossbar; 6. Mounting block; 7. Sliding rod; 8. First mounting seat; 9. First measuring assembly; 901. First mounting frame; 902. Sliding frame; 903. First sliding column; 904. Second sliding column; 10. Second measuring assembly; 1001. Second mounting frame; 1002. Adjusting column; 1003. Clearing frame; 11. Cleaning assembly; 1101. Extension rod; 1102. Cleaning rod; 1103. Second gear; 1104. Third gear. 1105 Gear; 12. Air duct; 12. Auxiliary component; 1201. Fixed rod; 1202. Movable telescopic rod; 1203. Probe head; 13. Tooth block; 14. First gear; 15. Adjusting frame; 16. Laser rangefinder; 17. Sliding block; 18. Transmission component; 1801. Rotating rod; 1802. Transmission belt; 1803. Driven rod; 19. Measuring probe; 1901. Fixed sleeve; 1902. Fixed block; 1903. Telescopic spring; 1904. Contact measuring head; 20. Measuring frame; 21. Second mounting base; 22. Third mounting base; 23. Fourth mounting base. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figure 1-14A turnout switch rail profile wear measuring device includes a car body 1. A drive assembly 2 is rotatably mounted on the lower end of the car body 1. There are two drive assemblies 2. Each drive assembly 2 includes a fixed shaft 201 rotatably connected to the car body 1. Rollers 202 are fixedly mounted on both ends of the fixed shaft 201. A control box 203 is mounted on the fixed shaft 201. A protective shell 3 is fixedly connected to one side of the outer wall of the car body 1. Assembly frames 4 are located at both ends of the fixed shaft 201 at the bottom of the car body 1. The upper end of the assembly frame 4 is fixedly connected to the bottom of the car body 1 and rotatably connected to the fixed shaft 201. A crossbar 5 is fixedly mounted between the two assembly frames 4. The bottom of the crossbar 5... Two sliding blocks 17 are slidably installed, and a measuring frame 20 is fixedly installed at the end of each of the two sliding blocks 17. A laser rangefinder 16 is fixedly installed at the upper and lower ends of the measuring frame 20, and an adjustment frame 15 is slidably connected to the end of the measuring frame 20. An assembly frame 4 with fixed ends on both ends of another set of fixed shafts 201 is fixedly installed with a mounting block 6 at the lower end. Sliding rods 7 are fixedly installed at both ends of the mounting block 6. A first measuring component 9 and a second measuring component 10 are slidably installed on the two sets of sliding rods 7, respectively. The first measuring component 9 is located at both ends of the mounting block 6, and the two sets of second measuring components 10 are located between the two sets of first measuring components 9. The first measuring component 9 includes a first mounting frame 901 and a sliding frame 902 that slide against each other. The upper and lower ends of the first mounting frame 901 are both provided with measuring probes 19. The second measuring component 10 includes a second mounting frame 1001 that is also provided with measuring probes 19 at its upper and lower ends. A clearance frame 1003 is slidably connected to the second mounting frame 1001. The measuring probe 19 includes a fixed sleeve 1901 fixedly connected to the first mounting bracket 901 and the second mounting bracket 1001. A fixed block 1902 is fixedly installed inside the fixed sleeve 1901. A telescopic spring 1903 is fixedly connected to the bottom of the fixed block 1902. A contact measuring head 1904 is fixedly connected to the lower end of the telescopic spring 1903, and the contact measuring head 1904 is slidably connected to the lower end of the fixed sleeve 1901. In this device, a drive assembly 2 is installed at the lower end of the car body 1, which can drive the car body 1 to move on the track. The rollers 202 included in the drive assembly 2 are the same size and specifications as the train wheels, allowing for smooth movement on the track. The control box 203 contains a controller (CPM1A PLC controller), etc. The car body 1 contains components such as an air pump. The protective shell 3, which is fixedly connected to the outer wall of the car body 1, contains a mounting block 6. During use, the protective shell 3 can protect the components mounted on the mounting block 6, preventing rainwater and sand from directly contacting the measuring devices in the device. During the measurement process, movable measuring frames 20 are respectively installed on both sides of the bottom of the end of the car body 1 away from the protective shell 3. A laser rangefinder 16 with a fixed height is installed on the measuring frame 20. The laser rangefinder 16 is existing technology, model XR850. During the movement of the car body 1, the adjusting frame 15 moves downward so that its lower end is in contact with the non-working edge of the curved or straight switch rail. In the contact measurement process, when the car body 1 passes through the switch in a straight direction, the adjusting frame 15 and the measuring frame 20 work together to measure the vertical and lateral wear of the curved switch rail. When the car body 1 passes through the switch laterally, the adjusting frame 15 and the measuring frame 20 work together to measure the vertical and lateral wear of the straight switch rail. In the actual measurement process, the laser rangefinder 16 set at the upper end of the measuring frame 20 corresponds to the top measurement position of the curved or straight switch rail, and can measure the vertical wear of the curved or straight switch rail. The laser rangefinder 16 set at the lower end of the measuring frame 20 corresponds to the side measurement position of the curved or straight switch rail, and can measure the thickness of the curved or straight switch rail. The measurement of the thickness of the curved or straight switch rail is thus obtained. After determining the thickness of the switch rail, the side wear of the curved or straight switch rail can be determined through the internal algorithm of the device. The measuring frames 20, located on both sides of the bottom surface of the car body 1, rotate synchronously with the sliding block 17. When the car body 1 passes the switch laterally, the measuring frame 20, fixedly mounted at the end of the sliding block 17, rotates to be perpendicular to the straight switch rail. The laser rangefinder 16 mounted on the measuring frame 20 can then measure the vertical and side wear of the straight switch rail. When the car body 1 passes the switch straight, the measuring frame 20, fixedly mounted at the end of the sliding block 17, rotates to be perpendicular to the tangent of the curved switch rail. The laser rangefinder 16 mounted on the measuring frame 20 can then measure the vertical and side wear of the curved switch rail. Furthermore, on the car body... During the journey, the sliding block 17 can slide on the bottom surface of the crossbar 5 to adjust the position of the measuring frame 20. When the car body 1 passes through the turnout laterally, the car body 1 enters the turnout under the guidance of the curved switch rail. One side of the roller 202 on the car body 1 presses on the curved switch rail and the straight main rail, while the other side always presses on the curved main rail. At this time, the second mounting seat 21, which slides on the left sliding rod 7, slides to adjust its position. After adjustment, the clearance frame 1003 set on the second mounting seat 21 moves downward until its lower end contacts the non-working edge of the straight switch rail. The end of the measuring probe 19 set on the second mounting frame 1001 contacts the side grinding and vertical grinding measurement positions of the working edge of the straight switch rail, respectively.Then, the side and vertical wear of the straight-strand switch rail are measured. At the same time, the end of the sliding frame 902 located on the right side of the mounting block 6 is always in contact with the non-working edge of the curved-strand basic rail, and the end of the measuring probe 19 on the first mounting frame 901 is in contact with the working edge of the curved-strand basic rail. The side and vertical wear of the curved-strand basic rail are measured. During the measurement process, the height of the first mounting frame 901 and the second mounting frame 1001 is always the same, and the sliding frame 902 stops after contacting the first mounting frame 901 when it slides down. This can be used to keep the measuring probe 19 on the sliding frame 902 for measuring the side wear of the basic rail and the measuring probe 19 on the second mounting frame 1001 for measuring the side wear of the switch rail on the same horizontal line, that is, 16mm below the top of the basic rail. Similarly, the measuring position of the laser rangefinder 16 on the measuring frame 20 for measuring the side wear of the switch rail is at the position of the switch rail corresponding to 16mm below the top of the basic rail. When the car body 1 passes through the turnout in a straight direction, it enters the turnout under the guidance of the straight switch rail. One side of the roller 202 on the car body 1 presses against the straight switch rail and the curved main rail, while the other side always presses against the straight main rail. At this time, the third mounting base 22, which slides on the right sliding rod 7, slides to adjust its position. After adjustment, the clearance bracket 1003 on the third mounting base 22 moves downward until its lower end contacts the non-working edge of the curved switch rail. The end of the measuring probe 19 on the second mounting bracket 1001 contacts the side and vertical wear measurement positions of the working edge of the curved switch rail, thereby measuring the side and vertical wear of the curved switch rail. At the same time, the end of the sliding bracket 902 on the left side of the mounting block 6 always keeps in contact with the non-working edge of the straight main rail, and the end of the measuring probe 19 on the first mounting bracket 901 contacts the working edge of the straight main rail to measure the side and vertical wear of the straight main rail. When the measuring probe 19 is in use, the contact measurement is slidably installed at the lower end of the fixed sleeve 1901. The measuring head 1904 contacts and slides on the outer wall of the contact rail and the base rail. The inner wall of the fixed sleeve 1901 is embedded with a contact sensor (model LH-Z15) at the corresponding position of the end of the measuring head 1904. When the measuring head 1904 is squeezed and slides into the fixed sleeve 1901, or when it extends outward under the action of the telescopic spring 1903, the contact sensor can measure the displacement value of the measuring head 1904. Then, it can compare and measure the vertical and side wear of the contact rail and the base rail. When the measuring probe 19 is in use, under the unified control of the system, the measuring probe 19, whose end contacts the curved or straight contact rail, can adjust the algorithm synchronously according to the shape of the curved or straight contact rail when it moves to different stages on the curved or straight contact rail. Then, when the measuring head 1904 at the end of the measuring probe 19 contacts the outer wall of the curved or straight contact rail, it can directly measure and display the side wear and vertical wear on the curved or straight contact rail. ,

[0023] As a technical optimization of the present invention, a first mounting seat 8 and a second mounting seat 21 are slidably mounted on a set of sliding rods 7, and a third mounting seat 22 and a fourth mounting seat 23 are slidably mounted on another set of sliding rods 7. The two sets of first measuring components 9 and second measuring components 10 are sequentially connected to the first mounting seat 8, the fourth mounting seat 23, the second mounting seat 21 and the third mounting seat 22. The first mounting base 8 and the third mounting base 22 have the same length, and the second mounting base 21 and the fourth mounting base 23 have the same length and are longer than the first mounting base 8 and the third mounting base 22. The first measuring component 9 and the second measuring component 10 located at both ends of the mounting block 6 are staggered, and the first measuring component 9 at one end of the mounting block 6 and the second measuring component 10 at the other end are on the same horizontal straight line.

[0024] As a technical optimization of the present invention, the second measuring component 10 further includes an adjusting column 1002 rotatably connected to the ends of the second mounting base 21 and the third mounting base 22. A transmission component 18 is connected between the lower end of the adjusting column 1002 and the sliding block 17. The transmission component 18 includes a rotating rod 1801 fixedly connected to the end of the sliding block 17. The other end of the rotating rod 1801 is slidably connected to the bottom surface of the crossbar 5. A transmission belt 1802 is engaged with the outer wall of the lower end of the rotating rod 1801. A driven rod 1803 is engaged with the other end of the transmission belt 1802. The driven rod 1803 is fixedly connected to the bottom surface of the adjusting column 1002 at the end of the second mounting base 21. A transmission component 18 is also connected between the lower end of the adjusting column 1002 rotatably connected to the end of the third mounting base 22 and another sliding block 17. During the movement of the vehicle body 1, the controller can automatically control the rotation of the rotating rod 1801 according to the angle of deviation of the vehicle body 1 from the driving trajectory. When the rotating rod 1801 rotates, it can be used to adjust the angle of the measuring frame 20 fixed at the end of the sliding block 17, so that the laser rangefinder 16 set on the measuring frame 20 is always in the measuring position on the upper surface and side of the curved or straight rail. When the angle of the measuring frame 20 is adjusted adaptively according to the curved or straight rail, the driven rod 1803 can rotate synchronously under the transmission action of the transmission belt 1802. Then, the two adjusting columns 1002 fixedly connected to the driven rod 1803 can be adjusted synchronously according to the curved or straight rail, so that the end of the measuring probe 19 set on the adjusting column 1002 can always be in contact with the side and upper measuring position of the curved or straight rail.

[0025] As a technical optimization of the present invention, limit plates are fixedly installed on the upper surfaces of the first mounting base 8, the second mounting base 21, the third mounting base 22, and the fourth mounting base 23. Auxiliary components 12 are provided between the limit plates installed on the upper surfaces of the first mounting base 8 and the third mounting base 22 and between the limit plates installed on the upper surfaces of the second mounting base 21 and the fourth mounting base 23. The auxiliary components 12 include a fixed rod 1201 fixedly connected to the limit plate. Both ends of the fixed rod 1201 are slidably connected to a movable telescopic rod 1202. A probe head 1203 is fixedly connected to the lower end of the movable telescopic rod 1202. When the car body 1 passes the turnout laterally, the probes 1203 located at the lower end of the movable telescopic rod 1202 contact the outer walls of the curved main rail and the curved switch rail respectively. During the movement of the car body 1, the two probes 1203 continuously contact the outer walls of the curved main rail and the curved switch rail, thereby measuring the distance between them and detecting the degree of deformation of the curved main rail and the curved switch rail at the turnout. Similarly, when the car body 1 passes the turnout straight ahead, the probes 1203 located at the lower end of another set of movable telescopic rods 1202... When the two probes 1203 are in contact with the outer walls of the main rail and the switch rail respectively, they can continuously detect the distance between the main rail and the switch rail and the degree of deformation of the main rail and the switch rail at the turnout during the movement of the car body 1. This allows the staff to promptly eliminate safety hazards based on the condition of the rails. When the rails deform, the sensor at the connection between the movable telescopic rod 1202 and the fixed rod 1201 can record the deformation. When not in use, the movable telescopic rod 1202 can retract to move the probes 1203 upwards for storage.

[0026] As a technical optimization of the present invention, the first measuring component 9 further includes a first sliding column 903 and a second sliding column 904 that are slidably connected to the ends of the first mounting base 8 and the fourth mounting base 23, wherein the first sliding column 903 is fixedly connected to the outer wall of the sliding frame 902, and the second sliding column 904 is fixedly connected to the outer wall of the first mounting frame 901. The first sliding column 903 and the second sliding column 904 are configured to slide relative to each other. When the second sliding column 904 slides upward, the first mounting bracket 901 can be adjusted to slide upward to make room. At the same time, the ends of the first mounting bracket 901 and the sliding bracket 902 are also slidably connected. By adjusting the position of the first mounting seat 8 or the fourth mounting seat 23, and cooperating with the sliding bracket 902 to slide up and down and relative to the first mounting bracket 901, the lower end of the first mounting bracket 901 can be made to contact the non-working edge of the corresponding standard rail from the beginning of the first stage of measurement.

[0027] As a technical optimization of the present invention, a plurality of tooth blocks 13 are fixedly installed on the outer wall of one end of a set of fixed shafts 201, and a first gear 14 that meshes with the tooth blocks 13 is rotatably installed on the assembly frame 4 at a position corresponding to the tooth blocks 13. When the vehicle body 1 moves, the fixed shaft 201 rotates and drives the roller 202 to move along the track. Then, the multiple tooth blocks 13 fixedly installed on the fixed shaft 201 drive the first gear 14 meshing with it to rotate. A trigger is provided on the outer wall of the first gear 14. When the first gear 14 rotates one revolution, it can trigger the laser rangefinder 16 set on the measuring frame 20 to start measuring the curved or straight point rail.

[0028] As a technical optimization of the present invention, a cleaning component 11 is rotatably installed at the lower center position of the mounting block 6. The cleaning component 11 includes an extension rod 1101 rotatably connected to the center position of the bottom surface of the mounting block 6. Second gears 1103 are rotatably installed on both sides of the end of the extension rod 1101. A third gear 1104 is rotatably installed between the two second gears 1103 at the bottom surface of the end of the extension rod 1101, and is meshed with the two second gears 1103 respectively. A drive motor for driving the second gear 1103 to rotate is fixedly installed at the upper end of the extension rod 1101 corresponding to one of the second gears 1103. A cleaning rod 1102 is fixedly installed on each of the two second gears 1103. During the movement of the vehicle body 1, the drive motor starts and drives the second gear 1103 to rotate. With the transition of the third gear 1104, the two second gears 1103 can simultaneously expand to both sides or converge towards the middle. When the second gear 1103 is in the expanded state, the cleaning brush and other equipment located on the bottom surface of the second gear 1103 can clean the upper surface of the rail and remove clumps of dirt and other contaminants.

[0029] As a technical optimization of the present invention, two sets of air guide pipes 1105 are provided at the ends of the two cleaning rods 1102, and one end of each set of air guide pipes 1105 is rotatably connected to the outer wall of the end of the cleaning rod 1102. The air guide pipes 1105 can be rotated to adjust their blowing angle, so that the air blown out of the air guide pipes 1105 can be accurately blown onto the switch rails and main rails on both sides of the car body 1, avoiding the influence of dust and other residual dust on the surface of the switch rails and main rails on the measurement accuracy. At the same time, after the air guide pipes 1105 and the measuring frame 20 are adjusted, the air blown out can clean the surface of the laser rangefinder 16 set on the measuring frame 20.

[0030] A method for using a turnout switch rail profile wear measuring device includes the following steps: Step 1: When measuring the switch rail, place the device on the standard rail of the first stage, then push the car body 1. The four sets of rollers 202 can move along the standard rail, so that the device moves along the standard rail of the first stage. At this time, the first measuring component 9 and the second measuring component 10 located on the left side of the car body 1 are staggered. The clearance frame 1003 slidably mounted on the second mounting frame 1001 slides upward to make way. Then the ends of the measuring probes 19 on the first mounting frame 901 and the second mounting frame 1001 are in contact with the upper end of the working edge of the standard rail. The side wear and vertical wear of the working edge of the standard rail can be measured respectively. The side wear measurement position of the standard rail is 16mm down from the top of the standard rail. Similarly, the first measuring component 9 and the second measuring component 10 located on the right side of the car body 1 can measure the side wear and vertical wear of the working edge of the other standard rail. Step Two: Next, the user pushes the car body 1 along the standard rail to enter the second stage. When the car body 1 passes the turnout laterally, it enters the turnout under the guidance of the curved switch rail. One side of the roller 202 on the car body 1 presses against the curved switch rail and the straight main rail, while the other side always presses against the curved main rail. At this time, the second mounting base 21, which slides on the left sliding rod 7, slides to adjust its position. After adjustment, the clearance bracket 1003 on the second mounting base 21 moves downward until its lower end contacts the non-working edge of the straight switch rail. The end of the measuring probe 19 on the second mounting bracket 1001 contacts the side wear and vertical wear measurement positions of the working edge of the straight switch rail, and then measures the side wear and vertical wear of the straight switch rail. The side wear measurement position of the straight switch rail is 16mm below the top of the curved main rail. Meanwhile, the end of the sliding frame 902 located on the right side of the mounting block 6 always keeps in contact with the non-working edge of the curved basic rail, and the end of the measuring probe 19 on the first mounting frame 901 keeps in contact with the working edge of the curved basic rail to measure the side grinding and vertical grinding of the curved basic rail. The side grinding measurement position of the curved basic rail is 16mm down from the top of the curved basic rail. Step 3: When the car body 1 passes through the turnout in a straight direction, the car body 1 enters the turnout under the guidance of the straight switch rail. One side of the roller 202 on the car body 1 presses against the straight switch rail and the curved main rail, while the other side always presses against the straight main rail. At this time, the third mounting base 22, which slides on the right sliding rod 7, slides to adjust its position. After adjustment, the clearance bracket 1003 set on the third mounting base 22 moves downward until its lower end contacts the non-working edge of the curved switch rail. The end of the measuring probe 19 set on the second mounting bracket 1001 grinds the side of the working edge of the curved switch rail. The side and vertical wear of the curved pointed rail are measured by contacting the vertical wear measurement position. Similarly, the side wear measurement position of the curved pointed rail is 16mm below the top of the straight basic rail. At the same time, the end of the sliding frame 902 located on the left side of the mounting block 6 is always in contact with the non-working edge of the straight basic rail, and the end of the measuring probe 19 on the first mounting frame 901 is in contact with the working edge of the straight basic rail to measure the side and vertical wear of the straight basic rail. The side wear measurement position of the straight basic rail is 16mm below the top of the straight basic rail. Step 4: The measuring frame 20 located on both sides of the bottom surface of the car body 1 rotates synchronously with the sliding block 17. When the car body 1 passes through the turnout laterally, the measuring frame 20 fixedly installed at the end of the sliding block 17 rotates to be perpendicular to the straight rail. Then the laser rangefinder 16 installed on the measuring frame 20 can measure the vertical and lateral wear of the straight rail. When the car body 1 passes through the turnout straight, the measuring frame 20 fixedly installed at the end of the sliding block 17 rotates to be perpendicular to the tangent of the curved rail. The laser rangefinder 16 installed on the measuring frame 20 can measure the vertical and lateral wear of the curved rail. During the movement of the car body 1, the sliding block 17 can slide on the bottom surface of the crossbar 5 to adjust the position of the measuring frame 20. Step 5: When the sliding block 17 rotates, under the action of the two transmission components 18, the driven rod 1803 can be driven to rotate through the transmission belt 1802, so that the two adjusting columns 1002 follow the sliding block 17 to adjust the measuring angle synchronously. When passing through the side switch, the second mounting bracket 1001 installed on the adjusting column 1002 is synchronously adjusted to be perpendicular to the straight switch rail. When passing through the straight switch, the second mounting bracket 1001 installed on the adjusting column 1002 is synchronously adjusted to be perpendicular to the tangent of the curved switch rail. Step Six: When the car body 1 travels on the track, the cleaning component 11 located at the front end of the device can clean the rails on both sides. The two sets of cleaning rods 1102 can rotate with the second gear 1103. When the two sets of cleaning rods 1102 rotate to be parallel to the car body 1, they are in an unused storage state. When the two sets of cleaning rods 1102 rotate to be perpendicular to the extension rod 1101, they are in use. The air guide pipe 1105 located at the end of the cleaning rod 1102 automatically adjusts its angle and blows air to clean the switch rails and main rails on both sides of the car body 1.

[0031] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0032] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for measuring the wear profile of a turnout switch rail, comprising a car body (1), characterized in that, A drive assembly (2) is rotatably mounted on the lower end of the vehicle body (1). There are two sets of drive assemblies (2). Each drive assembly (2) includes a fixed shaft (201) rotatably connected to the vehicle body (1). A protective shell (3) is fixedly connected to one side of the outer wall of the vehicle body (1). Assembly frames (4) are provided at both ends of the fixed shaft (201) at the bottom of the vehicle body (1). The upper end of the assembly frame (4) is fixedly connected to the bottom of the vehicle body (1) and rotatably connected to the fixed shaft (201). A crossbar (5) is fixedly installed between the two assembly frames (4). Two sliding blocks (17) are slidably installed at the bottom of the crossbar (5). The ends of the two sliding blocks (17) are fixedly mounted. A measuring frame (20) is provided, and a laser rangefinder (16) is fixedly installed at the upper and lower ends of the measuring frame (20). An adjustment frame (15) is slidably connected to the end of the measuring frame (20). An assembly frame (4) with fixed ends on another set of fixed shafts (201) is fixedly installed with a mounting block (6) at the lower end. Sliding rods (7) are fixedly installed at both ends of the mounting block (6). A first measuring component (9) and a second measuring component (10) are slidably installed on the two sets of sliding rods (7). The first measuring component (9) is located at both ends of the mounting block (6), and the two sets of second measuring components (10) are located between the two sets of first measuring components (9). The first measuring component (9) includes a first mounting bracket (901) and a sliding bracket (902) that slide against each other. The upper and lower ends of the first mounting bracket (901) are provided with measuring probes (19). The second measuring component (10) includes a second mounting bracket (1001) that is also provided with measuring probes (19) at its upper and lower ends. A clearance bracket (1003) is slidably connected to the second mounting bracket (1001). The measuring probe (19) includes a fixed sleeve (1901) fixedly connected to the first mounting bracket (901) and the second mounting bracket (1001). A fixed block (1902) is fixedly installed inside the fixed sleeve (1901). A telescopic spring (1903) is fixedly connected to the bottom of the fixed block (1902). A contact measuring head (1904) is fixedly connected to the lower end of the telescopic spring (1903), and the contact measuring head (1904) is slidably connected to the lower end of the fixed sleeve (1901). The drive assembly (2) also includes rollers (202) fixedly installed at both ends of a fixed shaft (201), and a control box (203) is provided on the fixed shaft (201); One set of sliding rods (7) is slidably mounted with a first mounting seat (8) and a second mounting seat (21), and another set of sliding rods (7) is slidably mounted with a third mounting seat (22) and a fourth mounting seat (23). The two sets of first measuring components (9) and second measuring components (10) are sequentially connected to the first mounting seat (8), the fourth mounting seat (23), the second mounting seat (21) and the third mounting seat (22). The second measuring component (10) also includes an adjusting column (1002) rotatably connected to the ends of the second mounting base (21) and the third mounting base (22). A transmission component (18) is connected between the lower end of the adjusting column (1002) and the sliding block (17). The transmission component (18) includes a rotating rod (1801) fixedly connected to the end of the sliding block (17). The other end of the rotating rod (1801) is slidably connected to the bottom surface of the crossbar (5). A transmission belt (1802) is engaged with the outer wall of the lower end of the rotating rod (1801). A driven rod (1803) is engaged with the other end of the transmission belt (1802). The driven rod (1803) is fixedly connected to the bottom surface of the adjusting column (1002) at the end of the second mounting base (21). The lower end of the adjusting column (1002) rotatably connected to the end of the third mounting base (22) is also connected to another sliding block (17) via a transmission component (18).

2. The turnout switch rail profile wear measuring device according to claim 1, characterized in that, Limiting plates are fixedly installed on the upper surfaces of the first mounting base (8), the second mounting base (21), the third mounting base (22), and the fourth mounting base (23). An auxiliary component (12) is provided between the limiting plates installed on the upper surfaces of the first mounting base (8) and the third mounting base (22) and between the limiting plates installed on the upper surfaces of the second mounting base (21) and the fourth mounting base (23). The auxiliary component (12) includes a fixed rod (1201) fixedly connected to the limiting plate. Both ends of the fixed rod (1201) are slidably connected to a movable telescopic rod (1202). A probe (1203) is fixedly connected to the lower end of the movable telescopic rod (1202).

3. The turnout tip rail profile wear measuring device according to claim 2, characterized in that, The first measuring component (9) further includes a first slide column (903) and a second slide column (904) that are slidably connected to the ends of the first mounting base (8) and the fourth mounting base (23), wherein the first slide column (903) is fixedly connected to the outer wall of the sliding frame (902), and the second slide column (904) is fixedly connected to the outer wall of the first mounting frame (901).

4. The turnout switch rail profile wear measuring device according to claim 3, characterized in that, One of the fixed shafts (201) has multiple tooth blocks (13) fixedly installed on the outer wall of one end, and a first gear (14) that meshes with the tooth block (13) is rotatably installed on the assembly frame (4) at the position corresponding to the tooth block (13).

5. A turnout tip rail profile wear measuring device according to claim 4, characterized in that, A cleaning component (11) is rotatably mounted at the lower center of the mounting block (6). The cleaning component (11) includes an extension rod (1101) rotatably connected to the center of the bottom surface of the mounting block (6). Second gears (1103) are rotatably mounted on both sides of the end of the extension rod (1101). A third gear (1104) is rotatably mounted between the two second gears (1103) on the bottom surface of the end of the extension rod (1101). The third gear (1104) is meshed with the two second gears (1103). A drive motor for driving the second gear (1103) is fixedly mounted at the upper end of the extension rod (1101) at a position corresponding to one of the second gears (1103). A cleaning rod (1102) is fixedly mounted on each of the two second gears (1103).

6. The turnout tip rail profile wear measuring device according to claim 5, characterized in that, Two sets of air guide pipes (1105) are provided at the ends of the two cleaning rods (1102), and one end of each set of air guide pipes (1105) is rotatably connected to the outer wall of the end of the cleaning rod (1102). The air guide pipes (1105) can be rotated to adjust their blowing angle, so that the air blown out of the air guide pipes (1105) can be accurately blown to the switch rails and main rails on both sides of the car body (1), avoiding the dust remaining on the surface of the switch rails and main rails from affecting the measurement accuracy. At the same time, after the air guide pipes (1105) and the measuring frame (20) are adjusted, the air blown out can clean the surface of the laser rangefinder (16) set on the measuring frame (20).

7. The method of using the turnout switch rail profile wear measuring device according to claim 6 specifically includes the following steps: Step 1: When measuring the switch rail, place the device on the standard rail of the first stage, then push the car body (1). The four sets of rollers (202) can move along the standard rail, so that the device moves along the standard rail of the first stage. At this time, the first measuring component (9) and the second measuring component (10) located on the left side of the car body (1) are staggered. The clearance frame (1003) slidably mounted on the second mounting frame (1001) slides upward to make way. Then the ends of the measuring probes (19) on the first mounting frame (901) and the second mounting frame (1001) are in contact with the upper end of the working edge of the standard rail. The side wear and vertical wear of the working edge of the standard rail can be measured respectively. The side wear measurement position of the standard rail is 16mm below the top of the standard rail. Similarly, the first measuring component (9) and the second measuring component (10) located on the right side of the car body (1) can measure the side wear and vertical wear of the working edge of another standard rail. Step 2: Next, the user pushes the car body (1) along the standard rail to enter the second stage. When passing the turnout laterally, the car body (1) enters the turnout under the guidance of the curved switch rail. One side of the roller (202) on the car body (1) presses on the curved switch rail and the straight main rail, while the other side always presses on the curved main rail. At this time, the second mounting seat (21) sliding on the left sliding rod (7) slides to adjust its position. After adjustment, the clearance bracket (1003) set on the second mounting seat (21) moves downward to contact the non-working edge of the straight switch rail at its lower end. The end of the measuring probe (19) set on the second mounting bracket (1001) contacts the side grinding and vertical grinding measurement positions of the working edge of the straight switch rail, and then measures the side grinding and vertical grinding of the straight switch rail. The side grinding measurement position of the straight switch rail is 16mm down from the top of the curved main rail. Meanwhile, the end of the sliding frame (902) located on the right side of the mounting block (6) is always in contact with the non-working side of the curved basic rail, and the end of the measuring probe (19) on the first mounting frame (901) is in contact with the working side of the curved basic rail to measure the side grinding and vertical grinding of the curved basic rail. The side grinding measurement position of the curved basic rail is 16mm below the top of the curved basic rail. Step 3: When passing through the turnout in a straight direction, the car body (1) enters the turnout under the guidance of the straight switch rail. One side of the roller (202) on the car body (1) presses on the straight switch rail and the curved main rail, while the other side always presses on the straight main rail. At this time, the third mounting seat (22) located on the right sliding rod (7) slides to adjust its position. After adjustment, the clearance bracket (1003) set on the third mounting seat (22) moves downward until its lower end contacts the non-working side of the curved switch rail. The end of the measuring probe (19) set on the second mounting bracket (1001) respectively contacts the working side of the curved switch rail. The side grinding and vertical grinding measurement positions are in contact, and the side grinding and vertical grinding of the curved point rail are measured. Similarly, the side grinding measurement position of the curved point rail is 16mm below the top of the straight basic rail. At the same time, the end of the sliding frame (902) set on the left side of the mounting block (6) is always in contact with the non-working side of the straight basic rail, and the end of the measuring probe (19) set on the first mounting frame (901) is in contact with the working side of the straight basic rail. The side grinding and vertical grinding of the straight basic rail are measured. The side grinding measurement position of the straight basic rail is 16mm below the top of the straight basic rail. Step 4: The measuring frame (20) set on both sides of the bottom surface of the car body (1) rotates synchronously with the sliding block (17). When the car body (1) passes through the side switch, the measuring frame (20) fixedly installed at the end of the sliding block (17) rotates to be perpendicular to the straight switch rail. Then the laser rangefinder (16) set on the measuring frame (20) can measure the vertical and side wear of the straight switch rail. When the car body (1) passes through the side switch in a straight direction, the measuring frame (20) fixedly installed at the end of the sliding block (17) rotates to be perpendicular to the tangent of the curved switch rail. The laser rangefinder (16) set on the measuring frame (20) can measure the vertical and side wear of the curved switch rail. During the movement of the car body (1), the sliding block (17) can slide on the bottom surface of the crossbar (5) to adjust the position of the measuring frame (20). Step 5: When the sliding block (17) rotates, under the action of the two transmission components (18), the driven rod (1803) can be driven to rotate through the transmission belt (1802), so that the two adjusting columns (1002) follow the sliding block (17) to adjust the measuring angle synchronously. When passing through the side switch, the second mounting bracket (1001) installed on the adjusting column (1002) is synchronously adjusted to be perpendicular to the straight switch rail. When passing through the straight switch, the second mounting bracket (1001) installed on the adjusting column (1002) is synchronously adjusted to be perpendicular to the tangent of the curved switch rail. Step 6: When the car body (1) is moving on the track, the cleaning component (11) located at the front end of the device can clean the rails on both sides. The two sets of cleaning rods (1102) can rotate with the second gear (1103). When the two sets of cleaning rods (1102) rotate to be parallel to the car body (1), they are in an unused storage state. When the two sets of cleaning rods (1102) rotate to be perpendicular to the extension rod (1101), they are in use. The air guide pipe (1105) located at the end of the cleaning rod (1102) automatically adjusts the angle and blows air to clean the switch rails and main rails on both sides of the car body (1).

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