Rail traffic steel rail flaw detection device

Abstract

The invention relates to the technical field of steel rail flaw detection, and discloses a rail traffic steel rail flaw detection device which comprises a rail type flaw detection car and two marking units, the two marking units are arranged on the two sides of the bottom of the rail type flaw detection car respectively, and flaw detection equipment is installed at the bottom of the rail type flaw detection car. An operation table is arranged at the top of the rail type flaw detection car, and the marking unit comprises a magnetic block storage assembly, a putting assembly, a shielding assembly, an ejection assembly, an air supply assembly and a marking feedback assembly. The marking unit is driven by the air cylinder to mark, the marking magnetic block is adopted to be attracted to the damaged position, and compared with traditional spraying marking, the mode has the remarkable advantages, consumables are not needed, and the use cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rail flaw detection, and particularly relates to a rail flaw detection device for rail transit. Background Art

[0002] The rail flaw detection device for rail transit is an important device for detecting internal defects and damages of rails. The flaw detection device mainly uses the ultrasonic principle for detection. When ultrasonic waves propagate inside the rail, reflection waves will be generated when encountering defects or damages. By receiving and analyzing the reflection waves, it can be judged whether there are defects inside the rail and the position and size of the defects.

[0003] After retrieval, a Chinese patent with the publication number CN210680699U discloses a micro trolley for subway rail flaw detection, including: a rail flaw detection trolley, a rail flaw detector, and a marking frame. The front side and the rear side of the rail flaw detection trolley are respectively connected with running wheels through a first roller shaft and a second roller shaft, and a driving motor is arranged on the first roller shaft. A storage battery and a main controller are also arranged in the rail flaw detection trolley. In the above solution, by installing a marking frame at the tail end of the rail flaw detection trolley, and a coding machine is arranged on the marking frame. When detecting damages on the rail by using this micro trolley for subway rail flaw detection, when detecting damages on the rail, the main controller will control the coding machine to perform coding. The coding machine performs coding and marking on the inner side of the rail through a coding head, so as to realize the function of rail flaw detection and marking, which is convenient for the staff to replace and inspect the damaged rails at any time. However, when the above solution is actually used, there are still the following deficiencies: When the rail flaw detection device proposed in the above solution is in use, when the flaw detection device detects a defect at a certain place on the rail, the coding machine in the device sprays marks on the rail to facilitate subsequent maintenance of the damaged position of the rail by the staff. For this marking method, first of all, the coding liquid will be gradually consumed as the device is used, which requires the staff to regularly supplement the coding liquid, increasing the complexity and cost of maintenance. Secondly, the marks sprayed by the coding machine on the rail surface are not obvious enough, which is not only difficult to attract the attention of the staff in the first place, but also easily covered by environmental factors such as dust, thus reducing the visibility and durability of the marks and bringing inconvenience to subsequent maintenance work.

[0004] Therefore, it is necessary to design a rail flaw detection device for rail transit to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a rail flaw detection device for rail transit.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: A rail flaw detection device for rail transit, comprising a rail flaw detection vehicle and two marking units. The two marking units are respectively arranged on both sides of the bottom of the rail flaw detection vehicle. A flaw detection device is installed at the bottom of the rail flaw detection vehicle, and an operation platform is arranged at the top of the rail flaw detection vehicle. The marking unit includes a magnet block storage component, a feeding component, a shielding component, an ejecting component, a gas supply component and a marking feedback component; Among them, the magnet block storage component includes a magnet block storage box, which is fixed at the bottom position on the side of the rail flaw detection vehicle. A number of marking magnet blocks are stored inside the magnet block storage box; Among them, the feeding component includes a magnet block feeding box, a feeding port and a cylinder. The magnet block feeding box is connected to the magnet block storage box through an inclined sliding rack. The feeding port is opened on the side of the magnet block feeding box. The cylinder is installed on the bottom surface of the rail flaw detection vehicle. The telescopic end of the cylinder faces two through ports opened at the bottom of the magnet block storage box. When the cylinder operates, the lowermost marking magnet block is pushed out from the inside of the magnet block storage box, and then the marking magnet block slides into the magnet block feeding box through the sliding rack. An installation port is opened at the bottom of the magnet block feeding box, and the installation port is arranged opposite to the feeding port; Among them, the shielding component is arranged inside the magnet block feeding box and is used to shield the installation port; Among them, the ejecting component is also arranged on the side of the magnet block feeding box and is arranged opposite to the installation port; Among them, the gas supply component is arranged on the side of the magnet block storage box. The gas supply component is driven by a cylinder. When the cylinder operates, the gas supply component supplies gas to the ejecting component; Among them, the marking feedback component includes a triggering part and a feedback part. The triggering part is arranged on the magnet block feeding box, and the feedback part is arranged on the operation platform.

[0007] As a preferred technical solution of the present invention, the two through ports at the bottom of the magnet block storage box are arranged opposite to each other.

[0008] As a preferred technical solution of the present invention, the shielding component includes a baffle plate, a side plate and a first spring. The baffle plate is slidably arranged inside the magnet block feeding box, and the baffle plate is arranged opposite to the installation port. The side plate is fixed to the side of the baffle plate. One end of the first spring is connected to the inner bottom of the magnet block feeding box, and the other end is connected to the side plate. Two oppositely arranged limiting ports are opened on the side of the magnet block feeding box. Limiting plates are fixed on both sides of the baffle plate, and the two limiting plates respectively slide in the two limiting ports.

[0009] As a preferred technical solution of the present invention, the ejection assembly includes an outer cylinder, a first sealing cylinder, a first sliding plug, a top rod and a movable rod. The outer cylinder is fixed on the side of the magnet delivery box. The first sealing cylinder is fixed inside the outer cylinder. The first sliding plug is sealingly and slidably connected inside the first sealing cylinder. A second spring is connected between the first sliding plug and the inner surface of the first sealing cylinder. The top rod is fixed on the side of the first sliding plug. A slot is formed at one end of the top rod away from the first sliding plug. The movable rod is movably inserted into the slot. A third spring is connected between the movable rod and the wall of the slot. The movable rod is arranged opposite to the mounting opening.

[0010] As a preferred technical solution of the present invention, the air supply structure includes a second sealing cylinder, a second sliding plug, a connecting rod and a connecting plate. The second sealing cylinder is fixed on the side of the magnet storage box. The second sliding plug is sealingly and slidably connected inside the second sealing cylinder. A fourth spring is connected between the second sliding plug and the inner surface of the second sealing cylinder. A first hole is formed at one end of the second sealing cylinder away from the magnet storage box. One end of the connecting rod is fixed on the second sliding plug. The other end of the connecting rod passes through the first hole and extends to the outside of the second sealing cylinder. A connecting plate is connected between the end of the connecting rod outside the second sealing cylinder and the telescopic end of the cylinder. The second sealing cylinder is communicated with the first sealing cylinder through a communicating pipe.

[0011] As a preferred technical solution of the present invention, the triggering member includes a lifting structure, an inflation structure and a guiding structure; Among them, the lifting structure includes an assembly opening, a lifting plate, a fixing frame and a movable push plate. The assembly opening is formed on the side of the magnet delivery box. The lifting plate is slidably arranged in the assembly opening and is fixedly connected with the side plate. The fixing frame is fixed at one end of the lifting plate away from the side plate. The fixing frame has a U-shaped structure with an upward opening. The movable push plate is rotatably installed on the fixing frame.

[0012] As a preferred technical solution of the present invention, the inflation structure includes a side frame, a third sealing cylinder, a third sliding plug and a vertical rod. The side frame is fixed on the side of the magnet delivery box. The third sealing cylinder is fixed on the side frame. A second hole is formed on the top surface of the third sealing cylinder. A gas guide pipe is connected to the top position of the third sealing cylinder. The third sliding plug is sealingly and slidably connected inside the third sealing cylinder. A fifth spring is connected between the third sliding plug and the inner surface of the third sealing cylinder. The vertical rod is fixed on the third sliding plug. The top end of the vertical rod passes through the second hole and extends to the outside of the third sealing cylinder. A through hole is formed at the end of the vertical rod outside the third sealing cylinder. A sliding plate is slidably arranged in the through hole. The sliding plate is arranged opposite to the movable push plate.

[0013] As a preferred technical solution of the present invention, the guiding structure includes a fixing plate, a track groove and a bump. The fixing plate is fixed on the side frame. The track groove is opened on the side surface of the fixing plate. The bump is fixed on the sliding plate. One end of the bump away from the sliding plate extends into the track groove. The track groove is composed of a first sliding groove and a second sliding groove. The first sliding groove is vertical, and the second sliding groove is inclined.

[0014] As a preferred technical solution of the present invention, the feedback member includes a fixed cylinder, a movable plate, an airbag and a feedback rod. The fixed cylinder is fixed on the operating table. The movable plate is slidably arranged inside the fixed cylinder. One end of the airbag is connected to the inner bottom surface of the fixed cylinder, and the other end is connected to the movable plate. The airbag is internally provided with a spring. The feedback rod is fixed on the top surface of the movable plate. One end of the feedback rod away from the movable plate extends to the outside of the fixed cylinder. The airbag is communicated with one end of the air duct away from the third sealing cylinder.

[0015] As a preferred technical solution of the present invention, the size of the through hole is adapted to the size of the marked magnet.

[0016] The present invention has the following beneficial effects: 1. For the rail flaw detection device proposed by the present invention, during the flaw detection process, when a rail damage is detected, the marking unit is driven by a cylinder to perform marking. The marked magnet is used to adsorb at the damage position. This method has significant advantages compared with traditional spray marking. It does not require consumables, reduces the use cost. The marked magnet has a large volume and is obvious visually, providing clear position feedback for the staff, facilitating subsequent processing, and there is no problem of dust covering the marked point, improving the reliability and durability of the marking. At the same time, the marked magnets can be recycled uniformly, realizing the recycling of resources; 2. The marking unit of the present invention is ingeniously designed. Through the drive of the cylinder and a series of mechanical transmission mechanisms, the automatic delivery and accurate adsorption of the marked magnet are realized. Its main advantages include: high degree of automation, no manual intervention is required during the marking process, improving the flaw detection efficiency; through the cooperation of gas pressure and spring force, the marked magnet can reliably pop out from the magnet delivery box and adsorb on the side of the rail. The marking position is accurate. The whole marking process has a compact structure and smooth operation, ensuring the stability and reliability of the flaw detection device, and providing a strong guarantee for the safe operation of rail transit; 3. The magnetism of the marked magnet ensures that the delivery port of the magnet delivery box is always close to the side of the rail, which is beneficial for the marked magnet to be naturally adsorbed on the surface of the rail under the action of magnetic force. Combined with the thrust of the movable rod, this design not only improves the accuracy and reliability of the adsorption of the marked magnet, but also ensures the marking effect of the device on the rail damage position; 4. The marking feedback component designed in the present invention effectively solves the problem that it is difficult for workers to determine whether the marking magnetic block is successfully adsorbed on the rail under the interference of outdoor environment and mechanical noise. Through the mechanical linkage of the side plate, lifting plate, movable push plate and sliding plate, and the ingenious design of the airbag and feedback rod, the adsorption action of the marking magnetic block is converted into the upward movement of the feedback rod, providing intuitive visual feedback for the workers. This design not only improves the accuracy and efficiency of the work, but also enhances the reliability and usability of the equipment. 5. The track groove designed in the present invention ingeniously realizes the automatic separation between the sliding plate and the movable push plate, and further ensures the automatic reset of the third sliding plug. Through the movement of the convex block in the first chute and the second chute, the sliding plate can move upward under the push of the movable push plate and automatically move away from the movable push plate under the guiding action of the second chute, and finally reset under the action of gravity. This design not only simplifies the mechanical structure and improves the automation degree of the equipment, but also effectively avoids the movement interference between the sliding plate and the movable push plate, ensuring the stable operation and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the components of a rail flaw detection device for rail transit proposed by the present invention; Figure 2 It is a schematic diagram of the components of a rail flaw detection device for rail transit from another perspective proposed by the present invention; Figure 3 It is Figure 2 The enlarged view of the structure at A of Figure 4 It is a schematic diagram of the components of the marking unit; Figure 5 It is a sectional schematic diagram of the components of the marking unit; Figure 6 It is Figure 5 The enlarged view of the structure at B of Figure 7 It is Figure 5 The enlarged view of the structure at C of Figure 8 It is a sectional schematic diagram of the components of the magnetic block delivery box; Figure 9 It is Figure 8 The enlarged view of the structure at D of Figure 10 It is a schematic diagram of the components of the delivery component and the trigger; Figure 11 It is Figure 10 The enlarged view of the structure at E of Figure 12 It is a schematic diagram of the components of the feedback component.

[0018] In the figure: 1. Rail flaw detection vehicle; 11. Flaw detection equipment; 12. Operating platform; 21. Magnetic block storage box; 22. Through port; 23. Marking magnetic block; 31. Magnetic block feeding box; 32. Feeding port; 33. Installation port; 34. Slide carriage; 35. Cylinder; 41. Baffle plate; 42. Side plate; 43. First spring; 44. Limit port; 45. Limit plate; 51. Outer cylinder; 52. First sealing cylinder; 53. First sliding plug; 54. Second spring; 55. Thrust rod; 56. Groove; 57. Movable rod; 58. Third spring; 61. Second sealing cylinder; 62. Second sliding plug; 63. Connecting rod; 64. Fourth spring; 65. Connecting plate; 66. Connecting pipe; 71. Assembly port; 72. Lifting plate; 73. Fixed frame; 74. Movable push plate; 81. Side frame; 82. Third sealing cylinder; 83. Third sliding plug; 84. Fifth spring; 85. Vertical rod; 86. Air guide pipe; 87. Through hole; 88. Slide plate; 91. Fixed plate; 921. First chute; 922. Second chute; 93. Protrusion; 101. Fixed cylinder; 102. Movable plate; 103. Airbag; 104. Feedback rod. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Refer to Figure 1-12 , a rail flaw detection device for rail transit, including a rail flaw detection vehicle 1 and two marking units. The two marking units are respectively arranged on both sides of the bottom of the rail flaw detection vehicle 1. The bottom of the rail flaw detection vehicle 1 is equipped with flaw detection equipment 11, and the top of the rail flaw detection vehicle 1 is provided with an operating platform 12. The marking unit includes a magnetic block storage component, a feeding component, a shielding component, a jacking component, a gas supply component and a marking feedback component; The magnetic block storage assembly includes a magnetic block storage box 21, which is fixed at the bottom position of the side of the rail-type flaw detection vehicle 1. A plurality of marking magnetic blocks 23 are stored in the magnetic block storage box 21. The delivery assembly includes a magnetic block delivery box 31, a delivery port 32 and a cylinder 35. The magnetic block delivery box 31 is connected to the magnetic block storage box 21 through an inclined slide 34. The delivery port 32 is opened on the side of the magnetic block delivery box 31. The cylinder 35 is installed on the bottom surface of the rail-type flaw detection vehicle 1. The telescopic end of the cylinder 35 is directly opposite to the two through ports 22 opened at the bottom of the magnetic block storage box 21. The two through ports 22 at the bottom of the magnetic block storage box 21 are The size of the through opening 22 matches the size of the marking magnetic block 23. When the cylinder 35 is in operation, the marking magnetic block 23 at the bottom is pushed out from the inside of the magnetic block storage box 21, and the marking magnetic block 23 slides into the inside of the magnetic block delivery box 31 through the slide 34. The bottom of the magnetic block delivery box 31 is provided with a mounting opening 33, and the mounting opening 33 is arranged opposite to the delivery opening 32. When the cylinder 35 is in operation, its telescopic end extends out and pushes the marking magnetic block 23 at the bottom, so that it slides into the slide 34 through the through opening 22, and then the marking magnetic block 23 slides into the inside of the magnetic block delivery box 31 along the inclined slide 34, and falls in the magnetic block delivery box 31; The shielding assembly is arranged inside the magnetic block delivery box 31 and is used to shield the installation opening 33. The shielding assembly includes a baffle 41, a side plate 42 and a first spring 43. The baffle 41 is slidably arranged inside the magnetic block delivery box 31, and the baffle 41 is arranged opposite to the installation opening 33. The side plate 42 is fixed to the side of the baffle 41. One end of the first spring 43 is connected to the inner bottom of the magnetic block delivery box 31, and the other end is connected to the side plate 42. Two limit openings 44 arranged opposite to each other are opened on the side of the magnetic block delivery box 31. The limit plates 44 are fixed on both sides of the baffle 41. 5. The two limit plates 45 slide in the two limit openings 44 respectively. In the initial state, under the support of the first spring 43, the baffle 41 is located at a position facing the installation opening 33. At this time, the baffle 41 blocks the installation opening 33. When the marking magnetic block 23 falls inside the magnetic block delivery box 31, the marking magnetic block 23 will fall on the side plate 42 and press the side plate 42 downward, so that the side plate 42 and the baffle 41 move downward. When the marking magnetic block 23 falls to the limit position, the baffle 41 is staggered with the installation opening 33. At this time, the baffle 41 no longer blocks the installation opening 33. The ejection assembly is also arranged on the side of the magnetic block delivery box 31 and is arranged opposite to the installation port 33. The ejection assembly includes an outer cylinder 51, a first sealing cylinder 52, a first sliding plug 53, an ejector rod 55 and a movable rod 57. The outer cylinder 51 is fixed to the side of the magnetic block delivery box 31, the first sealing cylinder 52 is fixed inside the outer cylinder 51, the first sliding plug 53 is sealingly slidably connected to the inside of the first sealing cylinder 52, and the first sliding plug 53 and the inner surface of the first sealing cylinder 52 are connected by a second spring 54. The push rod 55 is connected to the side of the first sliding plug 53. A slot 56 is formed at one end of the push rod 55 away from the first sliding plug 53. A movable rod 57 is movably inserted into the slot 56. The movable rod 57 is connected to the slot wall of the slot 56 through a third spring 58. The movable rod 57 is arranged opposite to the installation opening 33. During the process of gas filling into the first sealing cylinder 52, the telescopic end of the cylinder 35 has not yet extended into the interior of the magnetic block storage box 21, that is, the magnetic block has not fallen into the magnetic block delivery box 31, and the blocking The plate 41 is still in a state of covering the installation opening 33 under the action of the second spring 54. In this case, the movable rod 57 will first extend into the installation opening 33 and resist the baffle plate 41. As the first slide plug 53 and the push rod 55 continue to move, the movable rod 57 will retract into the slot 56 and squeeze the first spring 43. Under the elastic force of the first spring 43, the movable rod 57 always has a tendency to pop out. Further, when the marking magnetic block 23 falls into the inside of the magnetic block delivery box 31, according to the above principle, the baffle plate 41 will be staggered with the installation opening 33. In this case, the baffle plate 41 no longer covers the movable rod 57. The movable rod 57 will pop out from the slot 56 under the elastic force of the first spring 43 and apply a thrust to the marking magnetic block 23 facing the installation opening 33. The thrust enables the marking magnetic block 23 to pop out from the inside of the magnetic block delivery box 31 and move toward the side of the rail, and finally adsorb on the side of the rail, thereby realizing automatic marking of the damaged position of the rail. The air supply assembly is arranged on the side of the magnet storage box 21, and the air supply assembly is driven by the cylinder 35. When the cylinder 35 is running, the air supply assembly supplies air to the ejection assembly. The air supply structure includes a second sealing cylinder 61, a second sliding plug 62, a connecting rod 63 and a connecting plate 65. The second sealing cylinder 61 is fixed to the side of the magnet storage box 21, and the second sliding plug 62 is sealingly and slidably connected to the inside of the second sealing cylinder 61. The second sliding plug 62 and the inner surface of the second sealing cylinder 61 are connected by a fourth spring 64. A first hole is provided at one end of the second sealing cylinder 61 away from the magnet storage box 21, and one end of the connecting rod 63 is fixed on the second sliding plug 62. The other end of the connecting rod 63 passes through the first hole and extends to the outside of the second sealing cylinder 61. The end of the connecting rod 63 located outside the second sealing cylinder 61 is connected to the telescopic end of the cylinder 35 through a connecting plate 65, and the second sealing cylinder 61 is connected to the first sealing cylinder 52 through a connecting pipe 66. The marking feedback component includes a trigger and a feedback member. The trigger is provided on the magnetic block delivery box 31. The trigger includes a lifting structure, an inflation structure, and a guiding structure. The lifting structure includes an assembly port 71, a lifting plate 72, a fixing frame 73, and a movable push plate 74. The assembly port 71 is opened on the side of the magnetic block delivery box 31. The lifting plate 72 is slidably arranged in the assembly port 71 and is fixedly connected to the side plate 42. The fixing frame 73 is fixed to the end of the lifting plate 72 away from the side plate 42. The fixing frame 73 has a U-shaped structure with an upward opening. The movable push plate 74 is rotatably installed on the fixing frame 73. The inflation structure includes a side frame 81, a third sealing cylinder 82, a third sliding plug 83, and a vertical rod 85. The side frame 81 is fixed to the side of the magnetic block delivery box 31. The third sealing cylinder 82 is fixed to the side frame 81, and a second hole is opened on the top surface of the third sealing cylinder 82. A gas guide pipe 86 is connected to the top position of the third sealing cylinder 82. The third sliding plug 83 is hermetically slidably connected in the third sealing cylinder 82. A fifth spring 84 is connected between the third sliding plug 83 and the inner surface of the third sealing cylinder 82. The vertical rod 85 is fixed to the third sliding plug 83. The top end of the vertical rod 85 passes through the second hole and extends to the outside of the third sealing cylinder 82. A through port 87 is opened at one end of the vertical rod 85 located outside the third sealing cylinder 82. A sliding plate 88 is slidably arranged in the through port 87. The sliding plate 88 is arranged opposite to the movable push plate 74. The guiding structure includes a fixing plate 91, a track groove, and a convex block 93. The fixing plate 91 is fixed to the side frame 81. The track groove is opened on the side surface of the fixing plate 91. The convex block 93 is fixed to the sliding plate 88. One end of the convex block 93 away from the sliding plate 88 extends into the track groove. The track groove is composed of a first sliding groove 921 and a second sliding groove 922. The first sliding groove 921 is vertical, and the second sliding groove 922 is inclined. When the marking magnetic block 23 pops out from the inside of the magnetic block delivery box 31, the feedback rod 104 will move upward. Since the marking magnetic block 23 will surely adsorb on the rail when it pops out from the magnetic block delivery box 31, a corresponding relationship will be formed between the adsorption action of the marking magnetic block 23 and the upward movement action of the feedback rod 104, that is, the adsorption action of the marking magnetic block 23 is converted into the upward movement action of the feedback rod 104. This design can provide an information feedback visually for the staff, enabling the staff to timely and accurately know the adsorption situation of the marking magnetic block 23; The feedback member is provided on the operating table 12. The feedback member includes a fixing cylinder 101, a movable plate 102, an airbag 103, and a feedback rod 104. The fixing cylinder 101 is fixed to the operating table 12. The movable plate 102 is slidably arranged inside the fixing cylinder 101. One end of the airbag 103 is connected to the inner bottom surface of the fixing cylinder 101, and the other end is connected to the movable plate 102. The airbag 103 is internally provided with a spring. The feedback rod 104 is fixed to the top surface of the movable plate 102. One end of the feedback rod 104 away from the movable plate 102 extends to the outside of the fixing cylinder 101. The airbag 103 is communicated with the end of the gas guide pipe 86 away from the third sealing cylinder 82.

[0021] The specific working principle of the present invention is as follows: When the rail flaw detection device for rail transit proposed by the present invention is in use, the rail flaw detection vehicle 1 travels on the rail, and the flaw detection device 11 arranged on the bottom surface of the rail flaw detection vehicle 1 performs flaw detection on the rail. The specific structure and working principle of the flaw detection device 11 are prior art, and the implementation method adopts conventional means, which is not shown in the figure and will not be elaborated here. When the flaw detection device 11 detects that there is a damage at a certain position of the rail, the rail flaw detection vehicle 1 stops moving. At the same time, the flaw detection device 11 sends a signal to the cylinder 35 to make the marking unit perform a marking action. During the marking process, the marking magnet 23 will adsorb on the damaged position of the rail, facilitating the subsequent treatment of the damaged position of the rail by the staff. After the marking is completed, the staff controls the rail flaw detection vehicle 1 to continue moving and perform subsequent flaw detection work. The method of using a magnet for marking, compared with the traditional spray marking, not only does not require consumables, but only requires the staff to uniformly recycle the marking magnet 23 when repairing the rail, and the marking effect is obvious, and there will be no phenomenon of dust covering the marking point. This is because the volume of the marking magnet 23 is relatively large, and it can provide obvious position feedback to the staff visually; For the marking unit, when the cylinder 35 operates, its telescopic end extends and pushes the lowermost marking magnet 23, causing it to slide into the carriage 34 through the through-port 22. Then, the marking magnet 23 slides into the magnet delivery box 31 along the inclined carriage 34 and falls inside the magnet delivery box 31. In the initial state, under the supporting action of the first spring 43, the baffle 41 is located opposite the mounting port 33. At this time, the baffle 41 blocks the mounting port 33. When the marking magnet 23 falls inside the magnet delivery box 31, the marking magnet 23 lands on the side plate 42 and presses down the side plate 42, causing the side plate 42 and the baffle 41 to move downward. When the marking magnet 23 reaches the limit position, the baffle 41 is displaced from the mounting port 33. At this time, the baffle 41 no longer blocks the mounting port 33. Additionally, it should be noted that while the cylinder 35 operates, it also drives the connecting rod 63 to move through the connecting plate 65, causing the connecting rod 63 to drive the second piston 62 to move. During the movement of the second piston 62, the gas inside the second sealing cylinder 61 can be pressed into the interior of the first sealing cylinder 52 through the connecting pipe 66. When the gas enters the interior of the first sealing cylinder 52, the gas pushes the first piston 53 to move. When the first piston 53 moves, it can drive the ejector rod 55 and the movable rod 57 to move. It is worth mentioning that during the process of the gas being filled into the first sealing cylinder 52, the telescopic end of the cylinder 35 has not yet extended into the magnet storage box 21, that is, the magnet has not fallen into the magnet delivery box 31. Under the action of the second spring 54, the baffle 41 still blocks the mounting port 33. In this case, the movable rod 57 first extends into the mounting port 33 and abuts against the baffle 41. Along with the continuous movement of the first piston 53 and the ejector rod 55, the movable rod 57 retracts into the slot 56 and compresses the first spring 43. Under the elastic force of the first spring 43, the movable rod 57 always has a tendency to pop out. Further, when the marking magnet 23 falls into the magnet delivery box 31, according to the above principle, the baffle 41 is displaced from the mounting port 33. In this case, the baffle 41 no longer blocks the movable rod 57, and the movable rod 57 pops out from the slot 56 under the elastic force of the first spring 43 and applies a thrust to the marking magnet 23 facing the mounting port 33. This thrust causes the marking magnet 23 to pop out from the interior of the magnet delivery box 31 and move towards the side of the rail, and finally adsorb on the side of the rail, thus realizing the automatic marking of the damaged position of the rail; It should be noted that during the movement of the orbital flaw detection vehicle 1 on the rail, the discharge port 32 on the magnet block discharge box 31 is always in a position close to the side of the rail. This design is conducive to the marking magnet block 23 being adsorbed on the side of the rail, and the marking magnet block 23 has a tendency to be adsorbed on the surface of the rail under the action of magnetic force. The combination of this magnetic attraction and the thrust of the movable rod 57 can ensure that the marking magnet block 23 is smoothly adsorbed on the surface of the rail, thereby ensuring the marking effect of the device on the damaged position of the rail. In addition, during the movement of the baffle 41, the two limiting ports 44 and the two limiting plates 45 play a role in limiting and guiding the movement of the baffle 41 to ensure the stability of the baffle 41 during movement and ensure that the side of the baffle 41 is always in contact with the inner surface of the magnet block discharge box 31. Secondly, after the discharge action of the marking magnet block 23 is completed, the air cylinder 35 resets and drives the second sliding plug 62 to reset through the connecting plate 65. When the second sliding plug 62 resets, it can extract the air in the first sealing cylinder 52 through the connecting pipe 66, so that the first sliding plug 53 resets under the elastic force of the second spring 54. When the first sliding plug 53 resets, the ejector rod 55 and the movable rod 57 reset accordingly. It should be noted here that when the marking magnet block 23 is pushed out by the movable rod 57, the marking magnet block 23 no longer presses down on the side plate 42. Without the pressure of the marking magnet block 23, the side plate 42 and the baffle 41 will reset under the elastic force of the first spring 43. And when the telescopic end of the air cylinder 35 has not retracted, the movable rod 57 still extends into the installation port 33. Therefore, when the baffle 41 resets, it will be blocked by the movable rod 57, that is, the baffle 41 will press on the movable rod 57 under the elastic force of the first spring 43. During the reset process of the movable rod 57, the pressure exerted by the baffle 41 on the movable rod 57 is not sufficient to overcome the elastic force exerted by the second spring 54 on the first sliding plug 53, that is, the pressure of the baffle 41 cannot hinder the smooth reset of the movable rod 57. This design is used to ensure that the movable rod 57 can smoothly reset to the inside of the outer cylinder 51, ensuring that subsequent marking actions can be carried out smoothly; When the orbital flaw detection vehicle 1 performs flaw detection operations on the rail, there may be some noises in the outdoor environment, and the operation of mechanical components in the device will also generate a certain amount of noise. Although there will be a certain impact sound when the marking magnet block 23 is adsorbed on the rail, these noises may prevent the staff from hearing the impact sound generated when the marking magnet block 23 is adsorbed on the rail, that is, the staff cannot judge whether the marking magnet block 23 is smoothly adsorbed on the rail, nor can they judge when to control the orbital flaw detection vehicle 1 to travel on the rail again. To avoid this situation, a marking feedback component is designed in the present invention, aiming to enable the staff to accurately know the adsorption situation of the marking magnet block 23; Specifically, when the side plate 42 moves downward under the pressure of the marking magnet block 23, the lifting plate 72 provided on the side plate 42 also moves downward accordingly. When the lifting plate 72 moves downward, it drives the movable push plate 74 to move downward. When the marking magnet block 23 has not fallen into the interior of the magnet delivery box 31, the convex block 93 is located within the first sliding groove 921. At this time, the end position of the sliding plate 88 is directly below the movable push plate 74, that is, the sliding plate 88 is located on the moving path of the movable push plate 74. In this case, during the downward movement of the movable push plate 74, it will come into contact with the sliding plate 88. Since the movable push plate 74 is rotatably mounted on the fixed frame 73, the movable push plate 74 will rotate and flip upward under the blocking action of the sliding plate 88. When the movable push plate 74 is separated from the sliding plate 88, the movable push plate 74 reversely resets under the action of gravity. At this time, the movable push plate 74 is located below the sliding plate 88. When the marking magnet block 23 pops out from the magnet delivery box 31, the baffle 41 and the side plate 42 move upward and reset synchronously, and the lifting plate 72 and the movable push plate 74 also move upward and reset accordingly. During this process, the movable push plate 74 will come into contact with the bottom surface of the sliding plate 88 again. Since the fixed frame 73 is designed as a U-shaped structure with an upward opening, the fixed frame 73 restricts the movable push plate 74 from flipping downward, which enables the movable push plate 74 to push the sliding plate 88 upward, causing the sliding plate 88 to drive the vertical rod 85 to move upward. When the vertical rod 85 moves upward, it can drive the third sliding plug 83 to move upward. When the third sliding plug 83 moves upward, it can press the gas inside the third sealing cylinder 82 into the interior of the airbag 103 through the air duct 86, causing the airbag 103 to inflate and expand. When the airbag 103 expands, it can lift the movable plate 102, causing the movable plate 102 to drive the feedback rod 104 to move upward. Based on the above process, when the marking magnet block 23 pops out from the interior of the magnet delivery box 31, the feedback rod 104 will move upward. Since the marking magnet block 23 will surely adsorb on the rail when it pops out from the magnet delivery box 31, a corresponding relationship will be formed between the adsorption action of the marking magnet block 23 and the upward movement action of the feedback rod 104, that is, the adsorption action of the marking magnet block 23 is converted into the upward movement action of the feedback rod 104. This design can provide an information feedback visually for the staff, enabling the staff to timely and accurately know the adsorption situation of the marking magnet block 23; In the present invention, a track groove is also designed. The track groove is provided for the automatic separation between the sliding plate 88 and the movable push plate 74, so as to realize the automatic reset of the third sliding plug 83. Specifically, during the process that the movable push plate 74 pushes the sliding plate 88 to move upward, the sliding plate 88 will drive the convex block 93 to move upward, so that the convex block 93 moves upward inside the first sliding groove 921. Along with the movement of the convex block 93, the convex block 93 will move into the inclined second sliding groove 922 and move along the second sliding groove 922. Since the second sliding groove 922 is designed to be inclined, under the guiding action of the second sliding groove 922, the convex block 93 will drive the sliding plate 88 to move, so that the sliding plate 88 moves in a direction away from the movable push plate 74 until the sliding plate 88 is separated from the movable push plate 74. In this case, the movable push plate 74 no longer applies a thrust to the sliding plate 88, and the movable push plate 74 will move above the sliding plate 88. The sliding plate 88 will also move downward under the action of gravity until the convex block 93 falls into the bottom position of the first sliding groove 921 again. This design not only realizes the automatic reset of the third sliding plug 83, but also can avoid the situation of movement interference between the sliding plate 88 and the movable push plate 74.

[0022] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A rail transit rail flaw detection device, characterized in that: It comprises a rail-type flaw detection vehicle (1) and two marking units, wherein the two marking units are respectively arranged on both sides of the bottom of the rail-type flaw detection vehicle (1), a flaw detection device (11) is installed at the bottom of the rail-type flaw detection vehicle (1), and an operating table (12) is arranged on the top of the rail-type flaw detection vehicle (1), and the marking unit comprises a magnetic block storage component, a delivery component, a shielding component, an ejection component, an air supply component and a marking feedback component; The magnetic block storage assembly comprises a magnetic block storage box (21), the magnetic block storage box (21) is fixed at the bottom of the side of the rail-type flaw detection vehicle (1), and a plurality of marking magnetic blocks (23) are stored inside the magnetic block storage box (21); The delivery assembly comprises a magnetic block delivery box (31), a delivery port (32) and a cylinder (35); the magnetic block delivery box (31) is connected to the magnetic block storage box (21) via an inclined slide (34); the delivery port (32) is provided on the side of the magnetic block delivery box (31); the cylinder (35) is installed on the bottom surface of the rail-type flaw detection vehicle (1); the telescopic end of the cylinder (35) is directly opposite to two through ports (22) provided at the bottom of the magnetic block storage box (21); when the cylinder (35) is in operation, the marking magnetic block (23) at the bottom is pushed out from the inside of the magnetic block storage box (21); the marking magnetic block (23) slides into the inside of the magnetic block delivery box (31) via the slide (34); the bottom of the magnetic block delivery box (31) is provided with an installation port (33); the installation port (33) is directly opposite to the delivery port (32); Wherein, the shielding component is arranged inside the magnetic block delivery box (31) and is used to shield the installation opening (33); The ejection assembly is also arranged on the side of the magnetic block delivery box (31) and is arranged directly opposite to the installation opening (33); The air supply component is arranged on the side of the magnetic block storage box (21), and the air supply component is driven by a cylinder (35). When the cylinder (35) is in operation, the air supply component supplies air to the ejection component; The marking feedback component comprises a triggering member and a feedback member, wherein the triggering member is arranged on the magnetic block delivery box (31), and the feedback member is arranged on the operating table (12).

2. A rail transit rail flaw detection device according to claim 1, characterized in that: The two openings (22) at the bottom of the magnetic block storage box (21) are arranged opposite to each other.

3. A rail transit rail flaw detection device according to claim 1, characterized in that: The shielding assembly comprises a baffle (41), a side plate (42) and a first spring (43); the baffle (41) is slidably arranged inside the magnetic block delivery box (31), and the baffle (41) is arranged opposite to the installation opening (33); the side plate (42) is fixed to the side of the baffle (41); one end of the first spring (43) is connected to the inner bottom of the magnetic block delivery box (31), and the other end is connected to the side plate (42); two limiting openings (44) arranged opposite to each other are opened on the side of the magnetic block delivery box (31); limiting plates (45) are fixed on both sides of the baffle (41); and the two limiting plates (45) slide in the two limiting openings (44) respectively.

4. The rail transit rail flaw detection device according to claim 1, characterized in that: The ejection assembly comprises an outer cylinder (51), a first sealing cylinder (52), a first sliding plug (53), an ejector rod (55) and a movable rod (57); the outer cylinder (51) is fixed to the side of the magnetic block delivery box (31); the first sealing cylinder (52) is fixed inside the outer cylinder (51); the first sliding plug (53) is sealingly and slidably connected inside the first sealing cylinder (52); the first sliding plug (53) and the inner surface of the first sealing cylinder (52) are connected via a second spring (54); the ejector rod (55) is fixed to the side of the first sliding plug (53); a slot (56) is formed at one end of the ejector rod (55) away from the first sliding plug (53); the movable rod (57) is movably inserted into the slot (56); the movable rod (57) and the slot wall of the slot (56) are connected via a third spring (58); and the movable rod (57) is arranged opposite to the mounting opening (33).

5. A rail transit rail flaw detection device according to claim 4, characterized in that: The air supply structure comprises a second sealing cylinder (61), a second sliding plug (62), a connecting rod (63) and a connecting plate (65); the second sealing cylinder (61) is fixed to the side of the magnet storage box (21); the second sliding plug (62) is sealingly slidably connected to the inside of the second sealing cylinder (61); the second sliding plug (62) and the inner surface of the second sealing cylinder (61) are connected via a fourth spring (64); a first hole is formed at one end of the second sealing cylinder (61) away from the magnet storage box (21); one end of the connecting rod (63) is fixed to the second sliding plug (62); the other end of the connecting rod (63) passes through the first hole and extends to the outside of the second sealing cylinder (61); one end of the connecting rod (63) located outside the second sealing cylinder (61) is connected to the telescopic end of the cylinder (35) via a connecting plate (65); the second sealing cylinder (61) and the first sealing cylinder (52) are connected via a connecting pipe (66).

6. The rail transit rail flaw detection device according to claim 1, characterized in that: The triggering member includes a lifting structure, an inflatable structure and a guiding structure; The lifting structure comprises an assembly opening (71), a lifting plate (72), a fixing frame (73) and a movable push plate (74); the assembly opening (71) is opened on the side of the magnetic block delivery box (31); the lifting plate (72) is slidably arranged in the assembly opening (71); the lifting plate (72) and the side plate (42) are fixedly connected; the fixing frame (73) is fixed to an end of the lifting plate (72) away from the side plate (42); the fixing frame (73) is in a U-shaped structure with the opening facing upward; and the movable push plate (74) is rotatably mounted on the fixing frame (73).

7. A rail transit rail flaw detection device according to claim 6, characterized in that: The inflatable structure comprises a side frame (81), a third sealing cylinder (82), a third sliding plug (83) and a vertical rod (85); the side frame (81) is fixed to the side of the magnetic block delivery box (31); the third sealing cylinder (82) is fixed to the side frame (81); a second hole is provided on the top surface of the third sealing cylinder (82); an air guide tube (86) is connected to the top of the third sealing cylinder (82); the third sliding plug (83) is sealingly and slidably connected in the third sealing cylinder (82); the third sliding plug (83) is sealingly and slidably connected in the third sealing cylinder (82); The plug (83) is connected to the inner surface of the third sealing cylinder (82) via a fifth spring (84); the vertical rod (85) is fixed on the third sliding plug (83); the top end of the vertical rod (85) passes through the second hole and extends to the outside of the third sealing cylinder (82); a through opening (87) is formed at one end of the vertical rod (85) located outside the third sealing cylinder (82); a slide plate (88) is slidably arranged in the through opening (87); and the slide plate (88) is arranged opposite to the movable push plate (74).

8. A rail transit rail flaw detection device according to claim 7, characterized in that: The guide structure comprises a fixed plate (91), a track groove and a protrusion (93); the fixed plate (91) is fixed on the side frame (81); the track groove is arranged on a side surface of the fixed plate (91); the protrusion (93) is fixed on the slide plate (88); an end of the protrusion (93) away from the slide plate (88) extends into the track groove; the track groove is composed of a first slide groove (921) and a second slide groove (922); the first slide groove (921) is vertical, and the second slide groove (922) is inclined.

9. A rail transit rail flaw detection device according to claim 8, characterized in that: The feedback component comprises a fixed cylinder (101), a movable plate (102), an airbag (103) and a feedback rod (104); the fixed cylinder (101) is fixed on the operating table (12); the movable plate (102) is slidably arranged inside the fixed cylinder (101); one end of the airbag (103) is connected to the inner bottom surface of the fixed cylinder (101), and the other end is connected to the movable plate (102); a spring is built into the airbag (103); the feedback rod (104) is fixed to the top surface of the movable plate (102); one end of the feedback rod (104) away from the movable plate (102) extends to the outside of the fixed cylinder (101); the airbag (103) is connected to one end of the air guide tube (86) away from the third sealing cylinder (82).

10. The rail transit rail flaw detection device according to claim 1, characterized in that: The size of the through opening (22) is adapted to the size of the marking magnetic block (23).

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