Railway track flaw detection mechanism and flaw detection car

Abstract

The invention relates to a railway track flaw detection mechanism and a flaw detection car, and belongs to the technical field of track flaw detection, the railway track flaw detection mechanism comprises a frame body, and further comprises a driving mechanism; a track detection mechanism; and a marking mechanism. Through cooperative use of the rail detecting mechanism and the marking mechanism, when flaw detection is performed on the upper surface of the rail, a polishing flaw detection belt moves on the upper surface of the rail, so that friction is generated between the polishing flaw detection belt and the upper surface of the rail, and when cracks and protrusions exist on the upper surface of the rail, the polishing flaw detection belt can move on the upper surface of the rail. At the moment, the friction force borne by the polishing flaw detection belt is increased when the polishing flaw detection belt passes through the cracks and the protrusions, then the marking mechanism works, marking liquid in the marking mechanism drips on the upper surface of the track through a marking pipe, and the track is marked; marking operation on the upper surface of the track is achieved through different friction forces when the upper surface of the track has defects, maintenance personnel can conveniently find the defects on the upper surface of the track in time, and the burden of the maintenance personnel is relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of track flaw detection, and in particular relates to a railway track flaw detection mechanism and a flaw detection vehicle. Background Art

[0002] Track flaw detection technology is a method used to detect defects in railway tracks. It is crucial to ensure the safe operation of railways. The following are some detailed descriptions of track flaw detection technology: The importance of track flaw detection: During the use of tracks, the repeated pressure generated by the passage of trains and external environmental factors such as temperature changes, humidity, etc. may cause cracks, wear or other forms of damage to the tracks; if these damages are not detected and repaired in time, serious accidents such as train derailment may occur; therefore, regular track flaw detection is an important part of railway maintenance; Common track flaw detection methods: Ultrasonic flaw detection: This is one of the most commonly used flaw detection methods. It detects defects inside the track by sending ultrasonic waves through the track and receiving reflected waves; Magnetic particle flaw detection: Uses magnetic fields and magnetic particles to detect cracks on the surface of the track; Eddy current flaw detection: Detects surface and near-surface defects by detecting changes in eddy currents generated by the track.

[0003] At present, when intelligent flaw detection equipment is used to perform surface flaw detection on the track, although the scratches on the track surface can be detected, since the scratches on the track surface cannot be marked, maintenance personnel need to use equipment such as magnifying glasses to find the scratches, which makes it difficult for maintenance personnel to find the scratches on the track surface, increasing the burden on maintenance personnel. Based on this, a railway track flaw detection mechanism and a flaw detection vehicle are proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a reasonably designed railway track flaw detection mechanism and flaw detection vehicle in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A railway track flaw detection mechanism comprises a frame, a handle is fixedly connected to the top of the frame, a roller is installed in the frame, a flaw detection chamber is fixedly connected to the frame, a control display screen is installed on the top of the frame, a camera is installed on the inner top of the frame, the camera is located at the rear side of the flaw detection chamber, and the camera is electrically connected to the control display screen, and is characterized in that it also includes:

[0007] A driving mechanism, wherein the driving mechanism is installed in the flaw detection chamber;

[0008] A rail detection mechanism, which is installed in the flaw detection chamber and driven by a driving mechanism;

[0009] A marking mechanism, which is installed in the flaw detection chamber and driven by a driving mechanism. The marking mechanism is connected to the rail detection mechanism and is used to mark defects on the upper surface of the rail;

[0010] A roller brush mechanism, which is installed at the output end of the driving mechanism and is used to clean the outer surface of the track;

[0011] A cleaning mechanism is installed at the output end of the driving mechanism, and the air blowing end and the water spraying end of the cleaning mechanism are respectively located on both sides of the rolling brush mechanism, and are used for cleaning the track.

[0012] As a further optimization scheme of the present invention, the driving mechanism is provided with two groups, and the driving mechanism includes a motor fixedly connected to one side of the flaw detection chamber, the output end of the motor is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the flaw detection chamber, the outer surface of the rotating shaft is fixedly connected to a first synchronous wheel, the outer surface of the first synchronous wheel is sleeved with a first synchronous belt, a second synchronous wheel is installed in the first synchronous belt, a first transmission shaft is fixedly connected in the second synchronous wheel, the first transmission shaft is rotatably connected to the flaw detection chamber, a third synchronous wheel is installed in the first synchronous belt, a second transmission shaft is fixedly connected in the third synchronous wheel, the second transmission shaft is rotatably connected to the flaw detection chamber, a guide roller is rotatably connected in the flaw detection chamber, the outer surface of the first synchronous belt is attached to the outer surface of the guide roller, a fourth synchronous wheel is installed in the first synchronous belt, the end of the rotating shaft is connected to a fifth synchronous wheel through a slot-hopping assembly, the end of the first transmission shaft is connected to a sixth synchronous wheel through a slot-hopping assembly, the end of the second transmission shaft is connected to a seventh synchronous wheel through a slot-hopping assembly, a fixed frame is fixedly connected in the flaw detection chamber, an eighth synchronous wheel is rotatably connected to the fixed frame, and a ninth synchronous wheel is rotatably connected in the flaw detection chamber.

[0013] As a further optimization scheme of the present invention, the rail detection mechanism includes a guide plate fixedly connected in the flaw detection chamber, the outer surface of the guide plate is slidably connected to a conveyor belt, the outer surface of the conveyor belt is fixedly connected to a polished flaw detection belt, and a second synchronous belt is fixedly connected inside the conveyor belt.

[0014] As a further optimization scheme of the present invention, the second synchronous belt is adapted to the fifth synchronous wheel, the second synchronous belt is adapted to the sixth synchronous wheel, the second synchronous belt is adapted to the seventh synchronous wheel, the second synchronous belt is adapted to the eighth synchronous wheel, and the second synchronous belt is adapted to the ninth synchronous wheel.

[0015] As a further optimization scheme of the present invention, the marking mechanism includes a hollow shaft rotatably connected to a fixed frame, a liquid inlet hole is opened on the side wall of the hollow shaft, a fixing ring is rotatably connected to the outer surface of the hollow shaft at the position of the liquid inlet hole, a liquid extraction tube is fixedly connected to the outer surface of the fixing ring, a liquid storage box is fixedly connected to the top of the flaw detection chamber, the liquid extraction end of the liquid extraction tube is located in the liquid storage box, a liquid outlet hole is opened in the middle position of the hollow shaft, a sleeve is rotatably connected to the outer surface of the middle part of the hollow shaft, the liquid outlet hole is located inside the sleeve, a marking tube is fixedly connected to the outer surface of the sleeve, and the end of the hollow shaft is connected to the tenth synchronous wheel through a slot-hopping assembly.

[0016] As a further optimization scheme of the present invention, the slot jumping assembly includes a connecting warehouse, and the four slot jumping assemblies are provided with eight connecting warehouses, which are respectively fixedly connected to the end of the hollow shaft, the end of the rotating shaft, the end of the first transmission shaft and the second transmission shaft. The two connecting warehouses fixedly connected to the end of the hollow shaft are connected to the interior of the hollow shaft, and a marking rod is slidably connected in the eight connecting warehouses. The outer surface of the marking rod is sleeved with a marking spring, and the end of the marking rod is fitted with a marking ring. The eight marking rings are grouped in pairs and are respectively fixedly connected to the inner surface of the tenth synchronous wheel, the inner surface of the fifth synchronous wheel, the inner surface of the sixth synchronous wheel and the inner surface of the seventh synchronous wheel.

[0017] As a further optimization scheme of the present invention, the liquid extraction tube passes through the fixed frame and the flaw detection chamber and is fixedly connected to the fixed frame and the flaw detection chamber, the marking tube passes through the fixed frame and the flaw detection chamber and is fixedly connected to the fixed frame and the flaw detection chamber, the two ends of the marking spring are respectively fixedly connected to the marking rod and the connecting chamber, the ring is fixedly connected to the fixed frame, the fixing ring is fixedly connected to the fixed frame, the tenth synchronous wheel is adapted to the second synchronous belt, and the fourth synchronous wheel is fixedly connected to the outer surface of the hollow shaft.

[0018] As a further optimization scheme of the present invention, the roller brush mechanism includes two first worm gears fixedly connected to the outer surfaces of the two second transmission shafts respectively, the outer surfaces of the two first worm gears are meshed with first worm wheels, a roller brush shaft is fixedly connected inside the two first worm wheels, the outer surface of the roller brush shaft is fixedly connected to a roller brush roller, one side of the flaw detection chamber is fixedly connected to a fixed chamber, and the end of the roller brush shaft is rotatably connected to the inner surface of the fixed chamber.

[0019] As a further optimization scheme of the present invention, the cleaning mechanism includes two second worm gears fixedly connected to the outer surfaces of the two second transmission shafts, the outer surfaces of the two second worm gears are meshed with two second worm wheels, a reciprocating screw is fixedly connected to the two second worm wheels, the top of the fixed warehouse is fixedly connected to the piston warehouse, the middle part of the piston warehouse is provided with a partition, the partition divides the piston warehouse into two parts, the two parts of the piston warehouse are sealed and slidably connected with a piston plate, the reciprocating screw runs through the two piston plates and is connected to the two piston plates by threads, and the end of the reciprocating screw is fixed to the fixed warehouse. The fixed warehouse is rotatably connected, the reciprocating screw rod passes through the piston warehouse and is rotatably connected with the piston warehouse, air inlet holes are opened on both sides of the top of the piston warehouse, the bottom of the piston warehouse is fixedly connected with an exhaust pipe, the bottom of the exhaust pipe is fixedly connected with an air jet pipe, the blowing end of the air jet pipe is located on the rear side of the rolling brush roller, the middle position of the top of the piston warehouse is fixedly connected with a water suction pipe, the top of the water suction pipe is fixedly connected with a water tank, the water tank is fixedly connected to the top of the frame, the side wall of the piston warehouse is fixedly connected with a water spray pipe, the bottom of the water spray pipe is opened with a water spray hole, and the water spray end of the water spray hole is located on the front side of the rolling brush roller.

[0020] A flaw detection vehicle with a railway track flaw detection mechanism comprises a vehicle frame, wheels and an electric telescopic rod, wherein the electric telescopic rod is fixedly connected to both sides of a flaw detection chamber, the vehicle frame is fixedly connected to the output end of the electric telescopic rod, and the wheels are installed below the vehicle frame.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention uses a track detection mechanism and a marking mechanism in coordination. When the upper surface of the track is being inspected for defects, the polished flaw detection tape will move on the upper surface of the track, causing friction between the polished flaw detection tape and the upper surface of the track. When cracks and protrusions exist on the upper surface of the track, the friction force to which the polished flaw detection tape is subjected when passing through the cracks and protrusions will increase, thereby causing the marking mechanism to operate, causing the marking liquid in the marking mechanism to drip onto the upper surface of the track through the marking tube to mark the track. This realizes the marking operation on the upper surface of the track by utilizing the difference in friction when defects exist on the upper surface of the track, making it easy for maintenance personnel to find defects on the upper surface of the track in a timely manner, reducing the burden on maintenance personnel and facilitating maintenance operations by maintenance personnel.

[0023] 2. The present invention sets a roller brush mechanism so that during the process of flaw detection on the track, the roller brush mechanism can clean the contaminants on the outer surface of the track and remove the influence of the contaminants on the outer surface of the track on the track detection mechanism, thereby avoiding the influence of the contaminants on the accuracy of the marking of defective parts on the upper surface of the track by the track detection mechanism, thereby ensuring the accuracy of the marking of defective parts on the upper surface of the track by the track detection mechanism through the marking mechanism.

[0024] 3. The present invention uses a cleaning mechanism and a roller brush mechanism in coordination. The cleaning mechanism will work while the roller brush mechanism is working. The water spray end of the cleaning mechanism will rinse the area that the roller brush mechanism will brush between the roller brushes, so that the pollutants can be better brushed off by the roller brush mechanism, and the blowing end of the cleaning mechanism will blow air to the area after the roller brush mechanism has brushed, so as to blow the pollutants loosened by the roller brush of the roller brush mechanism off the upper surface of the track, thereby further reducing the impact of the pollutants on the track detection mechanism and further ensuring the accuracy of the track detection mechanism in detecting defective parts of the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional upward-looking structure of the present invention;

[0027] Figure 3 It is a schematic diagram of a three-dimensional structure of a side wall cut away from the present invention;

[0028] Figure 4 It is a schematic diagram of a three-dimensional structure of the present invention cut through the middle of the front side;

[0029] Figure 5 The present invention Figure 4 The enlarged structural diagram at A in the middle;

[0030] Figure 6 The present invention Figure 4 The enlarged structural diagram at B in the middle;

[0031] Figure 7 It is a schematic diagram of a three-dimensional structure of the present invention in a side section;

[0032] Figure 8 The present invention Figure 7 The enlarged structural diagram at C in the middle;

[0033] Fig. 9 It is a schematic diagram of a three-dimensional structure of a piston chamber in the middle of the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the side wall of the flaw detection chamber of the present invention;

[0035] Fig.11 It is a schematic diagram of the front three-dimensional structure of the cleaning mechanism of the present invention;

[0036] Fig.12 It is a three-dimensional structural schematic diagram of the flaw detection mechanism of the present invention;

[0037] Fig.13 It is a three-dimensional structural schematic diagram of the driving mechanism of the present invention;

[0038] Fig.14 The present invention Fig.13 The enlarged structural diagram at D in the middle;

[0039] Fig.15 It is a schematic diagram of the structure of the slot-hopping component of the present invention.

[0040] In the figure: 1, frame; 2, handle; 3, roller; 4, flaw detection chamber; 5, driving mechanism; 501, motor; 502, rotating shaft; 503, first synchronous wheel; 504, first synchronous belt; 505, second synchronous wheel; 506, first transmission shaft; 507, third synchronous wheel; 508, second transmission shaft; 509, guide roller; 510, fourth synchronous wheel; 511, fifth synchronous wheel; 512, sixth synchronous wheel; 513, seventh synchronous wheel; 514, fixed frame; 515, eighth synchronous wheel; 516, ninth synchronous wheel; 6, track detection mechanism; 601, guide plate; 602, conveyor belt; 603, polished flaw detection belt; 604, second synchronous belt; 7, marking mechanism; 701, hollow shaft; 702, liquid inlet hole; 703, fixed ring; 704, liquid outlet hole; 705, sleeve ring; 706, marking tube; 707, liquid extraction tube; 708, liquid storage box; 709, connecting bin; 710, marking rod; 711, marking spring; 712, marking ring; 713, tenth synchronous wheel; 8, roller brush mechanism; 801, first worm; 802, first worm wheel; 803, roller brush shaft; 804, roller brush roller; 805, fixed bin; 9, cleaning mechanism; 901, second worm; 902, second worm wheel; 903, reciprocating screw; 904, piston plate; 905, piston bin; 906, air inlet; 907, exhaust pipe; 908, jet pipe; 909, water extraction pipe; 910, water tank; 911, water spray pipe; 912, water spray hole; 10, frame; 11, wheels; 12, electric telescopic rod; 13, control display screen; 14, camera. DETAILED DESCRIPTION

[0041] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0042] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15As shown, a railway track flaw detection vehicle includes a frame 10, wheels 11 and an electric telescopic rod 12. A flaw detection mechanism is installed on the frame 10, wherein the flaw detection mechanism includes a frame 1, a control display screen 13 is installed on the top of the frame 1, a camera 14 is installed on the inner top of the frame 1, the camera 14 is electrically connected to the control display screen 13, the control display screen 13 and the camera 14 are connected to a battery, and the battery is installed on the frame 1 (not shown in the figure). The camera 14 is set to take pictures of the upper surface of the track during the flaw detection process, and the recorded data is compared with the scar defects through the comparison program set inside the control display screen 13, and the results are displayed for maintenance personnel to observe, and the number of defects and markings on the upper surface of the track are recorded. A handle 2 is fixedly connected to the top of the frame 1. The setting of the handle 2 is convenient for maintenance personnel to push the flaw detection vehicle so that the flaw detection mechanism moves on the upper surface of the track through the roller 3. The frame 1 is installed with a roller 3. The shape of the roller 3 is adapted to the track so that the roller 3 can be close to the track. A flaw detection chamber 4 is fixedly connected to the frame 1. The control display screen 13 and the camera 14 are both located behind the flaw detection chamber 4. The electric telescopic rod 12 is fixedly connected to both sides of the flaw detection chamber 4. The frame 10 is fixedly connected to the output end of the electric telescopic rod 12. The wheel 11 is installed below the frame 10. The setting of the wheel 11 facilitates the movement of the flaw detection vehicle on the ground, and at the same time avoids the contact between the roller 3 and the ground, resulting in wear of the roller 3 affecting the smooth movement of the roller 3, and During flaw detection, the wheel 11 can be moved upward through the operation of the electric telescopic rod 12, so that the wheel 11 is away from the ground, so as to avoid the shaking of the flaw detection mechanism due to the presence of sleepers and sand and gravel on the track during the flaw detection process, thereby affecting the quality of flaw detection. The track flaw detection mechanism also includes: a driving mechanism 5, which is installed in the flaw detection chamber 4. The driving mechanism 5 is arranged in two groups, and the working directions of the two groups of driving mechanisms 5 are the same. Except for the motor 501 in the driving mechanism 5 and the second transmission shaft 508, the other structures of the driving mechanism 5 are all in the flaw detection chamber 4. The driving mechanism 5 includes a motor 501 fixedly connected to one side of the flaw detection chamber 4, and the output end of the motor 501 is fixedly connected to a rotating shaft 502, and the rotating shaft 502 rotates with the flaw detection chamber 4 The outer surface of the rotating shaft 502 is fixedly connected with the first synchronous wheel 503, the outer surface of the first synchronous wheel 503 is sleeved with the first synchronous belt 504, the second synchronous wheel 505 is installed in the first synchronous belt 504, the second synchronous wheel 505 is fixedly connected with the first transmission shaft 506, the first transmission shaft 506 is rotationally connected with the flaw detection chamber 4, the first synchronous belt 504 is installed with the third synchronous wheel 507, the third synchronous wheel 507 is fixedly connected with the second transmission shaft 508, the second transmission shaft 508 is rotationally connected with the flaw detection chamber 4, the flaw detection chamber 4 is rotationally connected with the guide roller 509, the outer surface of the first synchronous belt 504 is attached to the outer surface of the guide roller 509, and the fourth synchronous wheel 510 is installed in the first synchronous belt 504.The first synchronous belt 504 is tensioned by the first synchronous wheel 503, the second synchronous wheel 505, the third synchronous wheel 507, the guide roller 509 and the fourth synchronous wheel 510; the end of the rotating shaft 502 is connected to the fifth synchronous wheel 511 through the slot-hopping assembly, the end of the first transmission shaft 506 is connected to the sixth synchronous wheel 512 through the slot-hopping assembly, and the end of the second transmission shaft 508 is connected to the seventh synchronous wheel 513 through the slot-hopping assembly. A fixed frame 514 is fixedly connected in the flaw detection chamber 4, and a rotating frame 514 is mounted on the fixed frame 514. An eighth synchronous wheel 515 is connected, and a ninth synchronous wheel 516 is rotatably connected in the flaw detection chamber 4; a rail detection mechanism 6, which is installed in the flaw detection chamber 4, and the rail detection mechanism 6 is driven by the driving mechanism 5. The rail detection mechanism 6 includes a guide plate 601 fixedly connected in the flaw detection chamber 4, and the outer surface of the guide plate 601 is slidably connected to a conveyor belt 602, and a second synchronous belt 604 is fixedly connected in the conveyor belt 602, and the upper and lower surfaces of the second synchronous belt 604 are both provided with synchronous teeth, and the second synchronous belt 604 is connected to the flaw detection chamber 4. The fifth synchronous wheel 511 is matched, the second synchronous belt 604 is matched with the sixth synchronous wheel 512, the second synchronous belt 604 is matched with the seventh synchronous wheel 513, the second synchronous belt 604 is matched with the eighth synchronous wheel 515, and the second synchronous belt 604 is matched with the ninth synchronous wheel 516. The sizes of all synchronous wheels are the same. The outer surface of the conveyor belt 602 is fixedly connected with a polished flaw detection belt 603. The part where the polished flaw detection belt 603 fits the upper surface of the track is in the same plane as the lowest point of the roller 3. The polishing flaw detection tape 603 can polish the upper surface of the track. The polishing flaw detection tape 603 is composed of a plurality of fine steel hairs. When encountering a larger crack, the steel hairs will enter the crack, causing the movement speed of the polishing flaw detection tape 603 to decrease, that is, the friction force it receives increases. When encountering a protrusion, the steel hairs will be squeezed by the protrusion and deformed, which will also slow down the movement speed of the polishing flaw detection tape 603, increasing the friction force it receives, and the polishing flaw detection tape 603 is attached to the upper surface of the track.

[0043] When in use, the flaw detection vehicle is placed on the upper surface of the track that needs to be inspected, and the electric telescopic rod 12 is started to make the wheel 11 leave the ground, so that the roller 3 is completely attached to the upper surface of the track, and the flaw detection chamber 4 is set on the upper surface of the track. At the same time, the polished flaw detection belt 603 will be tightly attached to the upper surface of the track, and then the maintenance personnel can start the motor 501, and start the control display screen 13 and the camera 14, and at the same time push the flaw detection vehicle to move on the upper surface of the track through the roller 3 by holding the handle 2. During the movement of the flaw detection vehicle, the operation of the motor 501 will drive the rotating shaft 502 to rotate, and then drive the first synchronous wheel 503 to rotate. The rotation of the first synchronous wheel 503 will drive the second synchronous wheel 505, the third synchronous wheel 507 and the fourth synchronous wheel 510 to rotate through the first synchronous belt 504, and the rotation of the second synchronous wheel 505 will drive the rotation of the first transmission shaft 506, and the rotation of the third synchronous wheel 507 will drive the rotation of the second transmission shaft 508, so that the fifth synchronous wheel 511, the sixth synchronous wheel 512 and the seventh synchronous wheel 513 rotate simultaneously, and the conveyor belt 602 is driven to rotate along the outer surface of the guide plate 601 through the second synchronous belt 604, so that the grinding and flaw detection belt 603 moves along the outer surface of the track, and grinds the upper surface of the track, so that the defective parts on the upper surface of the track are visible. This is because when grinding the upper surface of the track, when there are cracks on the upper surface of the track, the grinding line generated by grinding will be broken in the parts with cracks, and the grinding line will be offset in the parts with protrusions. Therefore, it is easier for maintenance personnel to see the defective parts on the upper surface of the track, which is convenient for maintenance personnel to find and repair defects. The camera 14 takes pictures of the upper surface of the track during the flaw detection process, and compares the recorded data with scars and defects through a comparison program set in the control display screen 13, and displays the results for maintenance personnel to observe, while recording the number of defects and markings on the upper surface of the track.

[0044] like Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.14 and Fig.15As shown, the track flaw detection mechanism also includes: a marking mechanism 7, which is installed in the flaw detection chamber 4 and driven by the driving mechanism 5. The marking mechanism 7 is connected to the track detection mechanism 6. The marking mechanism 7 is used to mark when a defect occurs on the upper surface of the track. The marking mechanism 7 includes a hollow shaft 701 rotatably connected to the fixed frame 514. The side wall of the hollow shaft 701 is provided with a liquid inlet hole 702. The outer surface of the hollow shaft 701 located at the position where the liquid inlet hole 702 is located is rotatably connected with a fixing ring 703, and the fixing ring 703 is fixedly connected to the fixing frame 514. The outer surface of the fixing ring 703 is fixedly connected with a liquid extraction pipe 707, and the liquid extraction pipe 707 passes through the fixing frame 514 and the flaw detection chamber 4 and is fixedly connected to the fixing frame 514 and the flaw detection chamber 4 The top of the flaw detection chamber 4 is fixedly connected to a liquid storage box 708, and a liquid filling hole is provided on the top of the liquid storage box 708 to facilitate the addition of marking liquid, and the color of the marking liquid is generally red. The liquid extraction end of the liquid extraction tube 707 is located in the liquid storage box 708, and a one-way valve is installed in the liquid extraction tube 707, so that the hollow shaft 701 can only extract the marking liquid in the liquid storage box 708 through the liquid extraction tube 707. A liquid outlet hole 704 is provided in the middle position of the hollow shaft 701, and a ring 705 is rotatably connected to the outer surface of the middle part of the hollow shaft 701. The liquid outlet hole 704 is located in the ring 705, and the ring 705 is fixedly connected to the fixed frame 514. The outer surface of the ring 705 is fixedly connected to the marking tube 706, and the marking tube 706 passes through the fixed frame 514 and the flaw detection chamber 4 and It is fixedly connected to the fixing frame 514 and the flaw detection chamber 4, a one-way valve is arranged in the marking tube 706, so that the marking liquid in the hollow shaft 701 can only be discharged through the marking tube 706, and the end of the hollow shaft 701 is connected to the tenth synchronous wheel 713 through the slot-hopping assembly, and the slot-hopping assembly includes a connecting chamber 709, and the four slot-hopping assemblies are provided with eight connecting chambers 709, and the eight connecting chambers 709 are respectively fixedly connected to the end of the hollow shaft 701, the end of the rotating shaft 502, the end of the first transmission shaft 506 and the end of the second transmission shaft 508, and the two connecting chambers 709 fixedly connected to the end of the hollow shaft 701 are connected to the inside of the hollow shaft 701, and the eight connecting chambers 709 are all slidably connected with the marking rod 710, and the two ends of the marking rod 710 are respectively set to triangles. The marking rod 710 is in the form of a flat plate, one end of which is sealed and slidably connected to the inner surface of the connecting chamber 709, the outer surface of the marking rod 710 is sleeved with a marking spring 711, and the two ends of the marking spring 711 are respectively fixedly connected to the marking rod 710 and the connecting chamber 709, and the end of the marking rod 710 is fitted with a marking ring 712. The eight marking rings 712 are grouped in pairs and are respectively fixedly connected to the inner surface of the tenth synchronous wheel 713, the inner surface of the fifth synchronous wheel 511, the inner surface of the sixth synchronous wheel 512 and the inner surface of the seventh synchronous wheel 513. The tenth synchronous wheel 713 is adapted to the second synchronous belt 604. It should be noted that the state of adaptation of the tenth synchronous wheel 713 to the second synchronous belt 604 is tightly meshed.When there is no defect on the upper surface of the track after being cleaned by the roller brush mechanism 8 and the cleaning mechanism 9, the friction force existing therein will not change the fitting state of the marking rod 710 and the marking ring 712 under the marking spring 711. However, when there is a large defect on the upper surface of the track that needs to be repaired, the friction force on the grinding flaw detection belt 603 suddenly increases, which will cause the rotation speed difference between the tenth synchronous wheel 713 and the hollow shaft 701, thereby causing the marking rod 710 to enter another groove from one groove of the marking ring 712. In addition, it should be noted that the connection method between the fifth synchronous wheel 511 and the rotating shaft 502, the sixth synchronous wheel 5 The connection mode between the fifth synchronous wheel 511 and the first transmission shaft 506, the connection mode between the seventh synchronous wheel 513 and the second transmission shaft 508, and the connection mode between the tenth synchronous wheel 713 and the hollow shaft 701 are all connected through the slot-hopping assembly. Therefore, when the friction force on the grinding flaw detection belt 603 suddenly increases due to the defects on the track surface, the rotation speeds of the fifth synchronous wheel 511 and the rotating shaft 502, the sixth synchronous wheel 512 and the first transmission shaft 506, and the seventh synchronous wheel 513 and the second transmission shaft 508 will be different, while the rotation speeds of the rotating shaft 502, the first transmission shaft 506 and the second transmission shaft 508 are still the same.

[0045] When in use, the rotation of the fourth synchronous wheel 510 will drive the rotation of the hollow shaft 701, and then drive the tenth synchronous wheel 713 to rotate through the connecting bin 709, the marking rod 710, the marking spring 711 and the marking ring 712, so that the tenth synchronous wheel 713 also drives the grinding flaw detection belt 603 to move through the second synchronous belt 604 and the conveyor belt 602. When the grinding flaw detection belt 603 moves on the upper surface of the grinding track, when the grinding flaw detection belt 603 encounters cracks and bumps that need to be repaired, the friction force on the grinding flaw detection belt 603 will suddenly increase. This is because the grinding flaw detection belt 603 It is composed of a plurality of fine steel hairs. When encountering a crack, the steel hairs will enter the crack, causing the grinding flaw detection belt 603 to move at a reduced speed, that is, the friction force it is subjected to increases. When encountering a protrusion, the steel hairs will be squeezed by the protrusion and deformed, which will also slow down the movement of the grinding flaw detection belt 603, causing the friction force on the grinding flaw detection belt 603 to increase, which will cause the tenth synchronous wheel 713 to reduce its rotation speed under the action of the increased friction force, while the rotation speed of the hollow shaft 701 remains unchanged, which will cause the marking rod 710 to move from one socket of the marking ring 712 to another slot. In this process, the marking rod 710 will The marking rod 710 slides back and forth in the connecting chamber 709. During the process of the marking rod 710 sliding back and forth in the connecting chamber 709, the hollow shaft 701 will extract the marking liquid in the liquid storage box 708 through the liquid inlet hole 702 and the liquid extraction tube 707, and the marking liquid in the hollow shaft 701 will be discharged into the marking tube 706 through the liquid outlet hole 704. The marking liquid is sprayed on the upper surface of the track through the marking tube 706, realizing the marking operation on the upper surface of the track by utilizing the difference in friction when there are defects on the upper surface of the track, which is convenient for maintenance personnel to find the defects on the upper surface of the track that need to be repaired in time, reducing the burden on maintenance personnel. It is convenient for maintenance personnel to perform maintenance operations; when there is slight damage on the upper surface of the track, the friction force on the grinding flaw detection belt 603 will not change suddenly, and the liquid extraction tube 707 will not extract the marking liquid in the liquid storage box 708 for marking. At this time, the camera 14 takes pictures of the upper surface of the track during the flaw detection process, and compares the recorded data with scars and defects through the comparison program set in the control display screen 13, and displays the results for maintenance personnel to observe. At the same time, the number of defects and markings on the upper surface of the track are recorded, which is convenient for maintenance personnel to repair major damage with markings and pay attention to minor damages.

[0046] like Figure 1 , Figure 2 , Figure 4 , Figure 8 , Fig.11 , Fig.12 and Fig.13As shown, the track flaw detection mechanism also includes: a roller brush mechanism 8, which is installed at the output end of the driving mechanism 5 and is used to clean the outer surface of the track. The roller brush mechanism 8 includes two first worm gears 801 respectively fixedly connected to the outer surfaces of the two second transmission shafts 508, the outer surfaces of the two first worm gears 801 are meshed with first worm wheels 802, and a roller brush shaft 803 is fixedly connected inside the two first worm wheels 802. The outer surface of the roller brush shaft 803 is fixedly connected to a roller brush roller 804, and the outer surface of the roller brush roller 804 is fixedly connected to a plurality of bristles. A fixed bin 805 is fixedly connected to one side of the flaw detection bin 4, and the end of the roller brush shaft 803 is rotatably connected to the inner surface of the fixed bin 805. The rolling direction of the roller brush roller 804 is opposite to the rolling direction of the roller 3, so that the roller brush roller 804 can better clean the upper surface of the track by rolling brushing.

[0047] During use, when the flaw detection vehicle is placed on the upper surface of the track, the roller brush 804 will fit tightly against the upper surface of the track, and when the second transmission shaft 508 rotates, it will drive the first worm 801 to rotate, and then drive the roller brush shaft 803 to rotate through the first worm gear 802, so that the roller brush 804 rolls along the upper surface of the track, thereby cleaning the contaminants on the outer surface of the track and removing the influence of the contaminants on the outer surface of the track on the track detection mechanism 6, thereby avoiding the influence of the presence of contaminants on the accuracy of the marking of defective parts on the upper surface of the track by the track detection mechanism 6, thereby ensuring the accuracy of the marking of defective parts on the upper surface of the track by the track detection mechanism 6 through the marking mechanism 7.

[0048] like Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 , Fig.11 , Fig.12 and Fig.13As shown, the track flaw detection mechanism also includes: a cleaning mechanism 9, which is installed at the output end of the driving mechanism 5, and the blowing end and the water spraying end of the cleaning mechanism 9 are respectively located on both sides of the roller brush mechanism 8, and are used to clean the track. The cleaning mechanism 9 includes two second worms 901 respectively fixedly connected to the outer surfaces of the two second transmission shafts 508, and the outer surfaces of the two second worms 901 are meshed with two second worm wheels 902, and the two second worm wheels 902 are fixedly connected with a reciprocating screw rod 903, and the top of the fixed warehouse 805 is fixedly connected with a piston warehouse 905, and the middle part of the piston warehouse 905 is provided with a partition, and the partition divides the piston warehouse 905 into two parts, and the two parts of the piston warehouse 905 are sealed and slidably connected. A piston plate 904 is connected, a reciprocating screw rod 903 penetrates the two piston plates 904 and is connected to the two piston plates 904 by threads, an end of the reciprocating screw rod 903 is rotatably connected to the fixed chamber 805, the reciprocating screw rod 903 penetrates the piston chamber 905 and is rotatably connected to the piston chamber 905, both sides of the top of the piston chamber 905 are provided with air inlet holes 906, a one-way valve is installed in the air inlet hole 906 so that the piston chamber 905 can only extract external gas through the air inlet hole 906, the bottom of the piston chamber 905 is fixedly connected with an exhaust pipe 907, and a one-way valve is installed inside the exhaust pipe 907 at one end close to the piston chamber 905, so that the gas in the piston chamber 905 can only be discharged through the exhaust pipe 907, and the exhaust pipe 907 is connected to the piston chamber 905. The bottom of the frame 1 is fixedly connected with an air jet pipe 908, and the air blowing end of the air jet pipe 908 is located at the rear side of the rolling brush roller 804. The middle position of the top of the piston chamber 905 is fixedly connected with a water pumping pipe 909, and a one-way valve is installed in the water pumping pipe 909, so that the piston chamber 905 can only draw water from the water tank 910 through the water pumping pipe 909. The top of the water pumping pipe 909 is fixedly connected with the water tank 910, and the water tank 910 is fixedly connected to the top of the frame 1. The side wall of the piston chamber 905 is fixedly connected with a water spraying pipe 911, and a one-way valve is installed inside the end of the water spraying pipe 911 close to the piston chamber 905, so that the water in the piston chamber 905 can only be discharged through the water spraying pipe 911, and a water spraying hole 91 is provided at the bottom of the water spraying pipe 911. 2. The water spraying end of the water spraying hole 912 is located at the front side of the rolling brush roller 804. It should be noted that the partition plate arranged in the middle part of the piston chamber 905 divides the piston chamber 905 into two parts. The two piston plates 904 are respectively located in the two parts of the piston chamber 905. When one piston plate 904 moves toward the partition plate in one part of the piston chamber 905, the other piston plate 904 will move away from the partition plate in the other part of the piston chamber 905, so that when one part of the piston chamber 905 is taking in air, the other part of the piston chamber 905 will be in an exhaust state, and the part of the piston chamber 905 in the intake state will be in a drainage state, and the other part of the piston chamber 905 in the exhaust state will be in a water intake state.

[0049] When in use, the second transmission shaft 508 will drive the second worm 901 to rotate, and then drive the reciprocating screw 903 to rotate through the second worm gear 902, so that the piston plate 904 slides in the piston chamber 905, so that the piston chamber 905 on one side of the partition plate extracts gas through the air inlet hole 906, and the piston chamber 905 on this side will discharge the internal water into the water spray pipe 911, and spray it on the upper surface of the track through the water spray hole 912, so as to dissolve the pollutants on the track in front of the rolling brush roller 804 in the moving direction, so that the rolling brush roller 804 can better The pollutants attached to the upper surface of the track are brushed off, and the gas inside the piston chamber 905 on the other side of the partition is discharged into the exhaust pipe 907 and blown to the upper surface of the track through the jet pipe 908. The piston chamber 905 on this side will draw water from the water tank 910 through the suction pipe 909 and enter the piston chamber 905, so as to blow the pollutants brushed off by the brush roller 804 away from the upper surface of the track, thereby further reducing the impact of the pollutants on the track detection mechanism 6 and further ensuring the accuracy of the track detection mechanism 6 in detecting defective parts of the track.

[0050] The specific working principle of the present invention is as follows: when in use, the flaw detection vehicle is moved to the side of the track that needs flaw detection through the wheel 11 by hand through the handle 2, and the flaw detection vehicle is placed on the upper surface of the track that needs flaw detection, and the electric telescopic rod 12 is started to make the wheel 11 move upward away from the ground, so that the roller 3 is completely in contact with the upper surface of the track, and the flaw detection chamber 4 is set on the upper surface of the track, and during the flaw detection process, the roller 3 is always in contact with the upper surface of the track, and the polished flaw detection belt 603 will be tightly in contact with the upper surface of the track, and the roller brush roller 804 will be tightly in contact with the upper surface of the track, and then the maintenance personnel can start the motor 501, and start the control display screen 13 and the camera 14, and at the same time, push the flaw detection vehicle to move on the upper surface of the track through the roller 3 by holding the handle 2, and when the flaw detection vehicle moves During the operation, the motor 501 will drive the rotating shaft 502 to rotate, and then drive the first synchronous wheel 503 to rotate. The rotation of the first synchronous wheel 503 will drive the second synchronous wheel 505, the third synchronous wheel 507 and the fourth synchronous wheel 510 to rotate through the first synchronous belt 504. The rotation of the second synchronous wheel 505 will drive the rotation of the first transmission shaft 506. The rotation of the third synchronous wheel 507 will drive the rotation of the second transmission shaft 508, so that the fifth synchronous wheel 511, the sixth synchronous wheel 512 and the seventh synchronous wheel 513 rotate at the same time, and the conveyor belt 602 is driven to rotate along the outer surface of the guide plate 601 through the second synchronous belt 604, so that the grinding flaw detection belt 603 moves along the outer surface of the track, and the upper surface of the track is ground, so that the defective parts on the upper surface of the track are visible;

[0051] Before the polishing flaw detection belt 603 polishes the upper surface of the track, when the second transmission shaft 508 rotates, it will drive the first worm 801 to rotate, and then drive the roller brush shaft 803 to rotate through the first worm gear 802, so that the roller brush roller 804 rolls along the upper surface of the track, thereby cleaning the pollutants on the outer surface of the track, removing the influence of the pollutants on the outer surface of the track on the track detection mechanism 6, thereby avoiding the presence of pollutants affecting the accuracy of the marking of defective parts on the upper surface of the track by the track detection mechanism 6, thereby ensuring the accuracy of the marking of defective parts on the upper surface of the track by the track detection mechanism 6 through the marking mechanism 7, and in this process, the second transmission shaft 508 will drive the second worm 901 to rotate, and then drive the reciprocating screw 903 to rotate through the second worm gear 902, so that the piston plate 904 slides in the piston chamber 905, so that the partition The piston chamber 905 on one side draws gas through the air inlet 906, and the piston chamber 905 on this side will discharge the internal water into the water spray pipe 911, and spray it on the upper surface of the track through the water spray hole 912, so as to dissolve the pollutants on the track in front of the moving direction of the roller brush roller 804, so that the roller brush roller 804 can better roll off the pollutants attached to the upper surface of the track, and the gas inside the piston chamber 905 on the other side of the partition is discharged into the exhaust pipe 907, and blown to the upper surface of the track through the air jet pipe 908, and the piston chamber 905 on this side will draw the water inside the water tank 910 into the piston chamber 905 through the water extraction pipe 909, and blow the pollutants rolled off by the roller brush roller 804 away from the upper surface of the track, thereby further reducing the influence of the pollutants on the track detection mechanism 6, and further ensuring the accuracy of the track detection mechanism 6 in detecting defective parts of the track;

[0052] At the same time, the rotation of the fourth synchronous wheel 510 will drive the rotation of the hollow shaft 701, and then drive the tenth synchronous wheel 713 to rotate through the connecting bin 709, the marking rod 710, the marking spring 711 and the marking ring 712, so that the tenth synchronous wheel 713 also drives the grinding flaw detection belt 603 to move through the second synchronous belt 604 and the conveyor belt 602. When the grinding flaw detection belt 603 moves on the upper surface of the grinding track, when the grinding flaw detection belt 603 encounters cracks and bumps that need to be repaired, the friction force on the grinding flaw detection belt 603 will suddenly increase. This is because the grinding flaw detection belt 60 3 is composed of a plurality of fine steel hairs. When encountering a crack, the steel hairs will enter the crack, causing the grinding flaw detection belt 603 to move at a reduced speed, that is, the friction force it receives will increase. When encountering a protrusion, the steel hairs will be squeezed by the protrusion and deformed, which will also slow down the grinding flaw detection belt 603, causing the friction force it receives to increase. This will cause the tenth synchronous wheel 713 to rotate at a reduced speed under the action of the increased friction force, while the rotation speed of the hollow shaft 701 remains unchanged, which will cause the marking rod 710 to move from one slot of the marking ring 712 to another slot. In this process, the marking rod 710 will When the marking rod 710 slides back and forth in the connecting chamber 709, the hollow shaft 701 will extract the marking liquid in the liquid storage box 708 through the liquid inlet hole 702 and the liquid extraction tube 707, and the marking liquid in the hollow shaft 701 will be discharged into the marking tube 706 through the liquid outlet hole 704, and the marking liquid will be sprayed on the upper surface of the track through the marking tube 706. In addition, it should be noted that the marked position at this time is not the part where the track has defects, but it provides an accurate range for maintenance personnel, and combined with the polishing flaw detection tape 603, the marks left on the upper surface of the track are The grinding marks enable maintenance personnel to quickly find the defective parts on the track surface, and realize the marking operation on the track surface by utilizing the difference in friction when there are defects on the track surface, so that maintenance personnel can find the defects on the track surface in time, reduce the burden on maintenance personnel, and facilitate maintenance operations. In the process of flaw detection and marking, the camera 14 takes pictures of the track surface during the flaw detection process, and records the number of defects and marking times on the track surface. This is because when there are defects on the track surface, the defects are divided into: small defects less than 0.5 mm, 0.Medium defects of 5 mm to 2 mm and severe defects exceeding 2 mm. When the defects are small, the fine steel wool on the grinding flaw detection tape 603 may not be affected by the small defects, so the marking function cannot be generated. The camera 14 can take pictures and record the existing small defects, and can also take pictures and record the marked defects. Therefore, it is necessary to use the camera 14 to record the number of defects and the number of marks on the surface of the track, and compare and display the recorded data through the control display screen 13 for maintenance personnel to observe, displaying the specific values ​​of the number of marks and the number of defects and the difference between the two, so that maintenance personnel can timely understand whether the defects on the track are completely repaired during maintenance;.

[0053] After the flaw detection of the track to be inspected is completed, the motor 501 is turned off, the electric telescopic rod 12 is started to make the wheel 11 contact the ground, and then the flaw detection vehicle can be removed from the upper surface of the track. The maintenance personnel can find the defects on the upper surface of the track according to the marked position, and the whole operation is completed.

[0054] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A railway track flaw detection mechanism, comprising a frame (1), a handle (2) fixedly connected to the top of the frame (1), a roller (3) installed in the frame (1), a flaw detection chamber (4) fixedly connected to the frame (1), a control display screen (13) installed on the top of the frame (1), a camera (14) installed on the inner top of the frame (1), the camera (14) is located at the rear side of the flaw detection chamber (4), and the camera (14) is electrically connected to the control display screen (13), characterized in that: Also includes: A driving mechanism (5), wherein the driving mechanism (5) is installed in the flaw detection chamber (4); A rail detection mechanism (6), wherein the rail detection mechanism (6) is installed in the flaw detection chamber (4), and the rail detection mechanism (6) is driven by a driving mechanism (5); A marking mechanism (7), wherein the marking mechanism (7) is installed in the flaw detection chamber (4) and driven by the driving mechanism (5), the marking mechanism (7) is connected to the rail detection mechanism (6), and the marking mechanism (7) is used to mark when a defect occurs on the upper surface of the rail; A rolling brush mechanism (8), which is installed at the output end of the driving mechanism (5) and is used to clean the outer surface of the track; A cleaning mechanism (9) is installed at the output end of the driving mechanism (5), and the air blowing end and the water spraying end of the cleaning mechanism (9) are respectively located on both sides of the rolling brush mechanism (8) for cleaning the track.

2. A railway track flaw detection mechanism according to claim 1, characterized in that: The driving mechanism (5) is provided with two groups, and the driving mechanism (5) comprises a motor (501) fixedly connected to one side of the flaw detection chamber (4); the output end of the motor (501) is fixedly connected to a rotating shaft (502); the rotating shaft (502) is rotatably connected to the flaw detection chamber (4); the outer surface of the rotating shaft (502) is fixedly connected to a first synchronous wheel (503); the outer surface of the first synchronous wheel (503) is sleeved with a first synchronous belt (504); a second synchronous wheel (505) is installed in the first synchronous belt (504); a first transmission shaft (506) is fixedly connected in the second synchronous wheel (505); the first transmission shaft (506) is rotatably connected to the flaw detection chamber (4); a third synchronous wheel (507) is installed in the first synchronous belt (504); the third synchronous wheel (507) is fixedly connected to the second transmission shaft (506); 8), the second transmission shaft (508) is rotatably connected to the flaw detection chamber (4), a guide roller (509) is rotatably connected inside the flaw detection chamber (4), the outer surface of the first synchronous belt (504) is in contact with the outer surface of the guide roller (509), a fourth synchronous wheel (510) is installed inside the first synchronous belt (504), the end of the rotating shaft (502) is connected to the fifth synchronous wheel (511) through a slot-hopping assembly, the end of the first transmission shaft (506) is connected to the sixth synchronous wheel (512) through a slot-hopping assembly, the end of the second transmission shaft (508) is connected to the seventh synchronous wheel (513) through a slot-hopping assembly, a fixing frame (514) is fixedly connected inside the flaw detection chamber (4), an eighth synchronous wheel (515) is rotatably connected to the fixing frame (514), and a ninth synchronous wheel (516) is rotatably connected inside the flaw detection chamber (4).

3. A railway track flaw detection mechanism according to claim 2, characterized in that: The rail detection mechanism (6) comprises a guide plate (601) fixedly connected in the flaw detection chamber (4); the outer surface of the guide plate (601) is slidably connected to a conveyor belt (602); the outer surface of the conveyor belt (602) is fixedly connected to a polished flaw detection belt (603); and the conveyor belt (602) is fixedly connected to a second synchronous belt (604).

4. A railway track flaw detection mechanism according to claim 3, characterized in that: The second synchronous belt (604) is adapted to the fifth synchronous wheel (511), the second synchronous belt (604) is adapted to the sixth synchronous wheel (512), the second synchronous belt (604) is adapted to the seventh synchronous wheel (513), the second synchronous belt (604) is adapted to the eighth synchronous wheel (515), and the second synchronous belt (604) is adapted to the ninth synchronous wheel (516).

5. A railway track flaw detection mechanism according to claim 3, characterized in that: The marking mechanism (7) comprises a hollow shaft (701) rotatably connected to a fixing frame (514); a liquid inlet hole (702) is provided on a side wall of the hollow shaft (701); a fixing ring (703) is rotatably connected to the outer surface of the hollow shaft (701) at the location of the liquid inlet hole (702); a liquid extraction tube (707) is fixedly connected to the outer surface of the fixing ring (703); a liquid storage box (708) is fixedly connected to the top of the flaw detection chamber (4); The liquid extraction end of the tube (707) is located in the liquid storage box (708), a liquid outlet hole (704) is opened in the middle of the hollow shaft (701), a ring (705) is rotatably connected to the outer surface of the middle part of the hollow shaft (701), the liquid outlet hole (704) is located inside the ring (705), and a marking tube (706) is fixedly connected to the outer surface of the ring (705), and the end of the hollow shaft (701) is connected to the tenth synchronous wheel (713) through a slot-jumping assembly.

6. A railway track flaw detection mechanism according to claim 5, characterized in that: The slot-hopping assembly comprises a connecting bin (709), wherein four of the slot-hopping assemblies are provided with eight connecting bins (709), and the eight connecting bins (709) are respectively fixedly connected to the end of the hollow shaft (701), the end of the rotating shaft (502), the end of the first transmission shaft (506), and the end of the second transmission shaft (508); the two connecting bins (709) fixedly connected to the end of the hollow shaft (701) are communicated with the interior of the hollow shaft (701); a marking rod (710) is slidably connected in each of the eight connecting bins (709); a marking spring (711) is sleeved on the outer surface of the marking rod (710); a marking ring (712) is fitted on the end of the marking rod (710); the eight marking rings (712) are arranged in groups of two and are respectively fixedly connected to the inner surface of the tenth synchronous wheel (713), the inner surface of the fifth synchronous wheel (511), the inner surface of the sixth synchronous wheel (512), and the inner surface of the seventh synchronous wheel (513).

7. A railway track flaw detection mechanism according to claim 6, characterized in that: The liquid extraction tube (707) passes through the fixed frame (514) and the flaw detection chamber (4) and is fixedly connected to the fixed frame (514) and the flaw detection chamber (4); the marking tube (706) passes through the fixed frame (514) and the flaw detection chamber (4) and is fixedly connected to the fixed frame (514) and the flaw detection chamber (4); the two ends of the marking spring (711) are respectively fixedly connected to the marking rod (710) and the connecting chamber (709); the sleeve (705) is fixedly connected to the fixed frame (514); the fixing ring (703) is fixedly connected to the fixed frame (514); the tenth synchronous wheel (713) is adapted to the second synchronous belt (604); and the fourth synchronous wheel (510) is fixedly connected to the outer surface of the hollow shaft (701).

8. A railway track flaw detection mechanism according to claim 2, characterized in that: The rolling brush mechanism (8) comprises two first worms (801) respectively fixedly connected to the outer surfaces of the two second transmission shafts (508); the outer surfaces of the two first worms (801) are meshed with first worm wheels (802); a rolling brush shaft (803) is fixedly connected inside the two first worm wheels (802); the outer surface of the rolling brush shaft (803) is fixedly connected to a rolling brush roller (804); one side of the flaw detection chamber (4) is fixedly connected to a fixed chamber (805); and the end of the rolling brush shaft (803) is rotatably connected to the inner surface of the fixed chamber (805).

9. A railway track flaw detection mechanism according to claim 8, characterized in that: The cleaning mechanism (9) comprises two second worms (901) respectively fixedly connected to the outer surfaces of the two second transmission shafts (508), the outer surfaces of the two second worms (901) are meshed with two second worm wheels (902), a reciprocating screw (903) is fixedly connected inside the two second worm wheels (902), the top of the fixed chamber (805) is fixedly connected to a piston chamber (905), a partition is provided in the middle of the piston chamber (905), the partition divides the piston chamber (905) into two parts, the two parts of the piston chamber (905) are sealed and slidably connected with a piston plate (904), the reciprocating screw (903) passes through the two piston plates (904) and is connected to the two piston plates (904) by threads, the end of the reciprocating screw (903) is rotatably connected to the fixed chamber (805), and the reciprocating screw (903) passes through the fixed chamber (805). The piston chamber (905) is penetrated and rotatably connected with the piston chamber (905), the top two sides of the piston chamber (905) are provided with air inlet holes (906), the bottom of the piston chamber (905) is fixedly connected with an exhaust pipe (907), the bottom of the exhaust pipe (907) is fixedly connected with an air injection pipe (908), the air blowing end of the air injection pipe (908) is located at the rear side of the rolling brush roller (804), and the top of the piston chamber (905) is connected to the roller brush roller (804). A water extraction pipe (909) is fixedly connected to the middle position, and the top of the water extraction pipe (909) is fixedly connected to a water tank (910), and the water tank (910) is fixedly connected to the top of the frame (1). The side wall of the piston chamber (905) is fixedly connected to a water spray pipe (911), and a water spray hole (912) is opened at the bottom of the water spray pipe (911), and the water spray end of the water spray hole (912) is located at the front side of the rolling brush roller (804).

10. A flaw detection vehicle having a railway track flaw detection mechanism according to any one of claims 1 to 9, characterized in that: The vehicle comprises a vehicle frame (10), wheels (11) and an electric telescopic rod (12), wherein the electric telescopic rod (12) is fixedly connected to both sides of a flaw detection chamber (4), the vehicle frame (10) is fixedly connected to the output end of the electric telescopic rod (12), and the wheel (11) is installed below the vehicle frame (10).

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