A high-speed railway turnout flaw detection telescopic rod

Abstract

The application relates to the technical field of railway turnout flaw detection tools, and discloses a high-speed railway turnout flaw detection telescopic rod, which comprises a main rod in a hollow structure, a telescopic supporting rod one is slidably installed in the main rod, the telescopic supporting rod one is in a hollow structure with an opening at the right end, the left end of the telescopic supporting rod one extends to the outside of the main rod, a telescopic supporting rod two is slidably installed in the telescopic supporting rod one, the telescopic supporting rod two is in a hollow structure with an opening at the right end, and the left end of the telescopic supporting rod two extends to the outside of the telescopic supporting rod one. The application has the following advantages and effects: the overall length of the device can be adjusted, the detection personnel can stand to perform flaw detection operation, the detection personnel does not need to bend over or squat to perform flaw detection, the orientation and the inclination angle of the flaw detection probes installed on a flaw detection probe assembly plate can be adjusted, the flaw detection surface of different angles and different positions of the turnout can be adapted, and the convenience and efficiency of the detection personnel in flaw detection work are greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of railway turnout flaw detection tools, and in particular to a high-speed railway turnout flaw detection telescopic rod. Background Technology

[0002] As a key connecting component of the track system, high-speed railway turnouts must withstand the high-frequency impact and crushing of trains. Cracks and peeling are prone to occur in parts such as the rail web, welds, and inner corners of the rail base. If these damages are not detected and repaired in time, they may cause major safety accidents such as train derailment and overturning. Therefore, regular flaw detection of high-speed railway turnouts is a core link in ensuring the safe operation of high-speed railways.

[0003] In existing technologies, flaw detection of high-speed railway turnouts requires a flaw detector and a telescopic rod. After mounting the flaw detector and probe on the telescopic rod, the operator holds the rod, activates the flaw detector, and places the probe close to the area to be inspected on the turnout. However, while traditional high-speed railway turnout telescopic rods meet the basic telescopic function requirements, they still have at least the following shortcomings in practical use: Because the angles of the inspection surfaces at different parts of the turnout vary significantly, and the probes on traditional telescopic rods are mostly fixed, the orientation and tilt angle of the probes can only be manually adjusted by changing how the rod is held. This makes it difficult to accurately adapt to different angles and positions of the inspection surfaces, resulting in insufficient inspection in some areas. Furthermore, the manual adjustment process requires frequent movement of the entire tool, especially in areas with dense turnouts where operating space is limited, further increasing the difficulty of the operation and failing to meet the needs for efficient and comprehensive flaw detection.

[0004] Therefore, we propose a high-speed railway turnout flaw detection telescopic rod to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a telescopic rod for flaw detection of high-speed railway turnouts. The overall length of the device is easy to adjust, allowing inspectors to stand and perform flaw detection operations without having to bend over or squat. Furthermore, the orientation and tilt angle of the flaw detection probes mounted on the probe mounting plate are easy to adjust, making it adaptable to flaw detection surfaces at different angles and positions on the turnouts. This greatly improves the convenience of flaw detection work for inspectors.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a telescopic rod for flaw detection of high-speed railway turnouts, comprising a hollow main rod, a telescopic support rod 1 slidably installed inside the main rod, the telescopic support rod 1 being a hollow structure with an open right end, the left end of the telescopic support rod 1 extending outside the main rod, a telescopic support rod 2 slidably installed inside the telescopic support rod 1, the telescopic support rod 2 being a hollow structure with an open right end, the left end of the telescopic support rod 2 extending outside the telescopic support rod 1, a handle fixedly connected to the outer wall of the right end of the main rod, a connecting seat fixedly installed at the left end of the telescopic support rod 2, an angle adjustment mechanism provided on the connecting seat, a flaw detection probe assembly plate provided on the angle adjustment mechanism, the angle adjustment mechanism being used to adjust the tilt angle and orientation of the flaw detection probe assembly plate, an electric actuator fixedly installed on the inner wall of the right end of the main rod, the output shaft end of the electric actuator penetrating the telescopic support rod 1 and fixedly connected to the inner wall of the left end of the telescopic support rod 2.

[0007] A further configuration of this application is as follows: the angle adjustment mechanism includes a first motor, a mounting base, a second motor, a lead screw, a shaft seat, a moving block, a first connecting arm, a fixed block, a U-shaped hinge plate, and a second connecting arm. A first groove is formed on the left side of the connecting base. The first motor is fixedly mounted on the inner right wall of the first groove. The mounting base is fixedly mounted on the output shaft end of the first motor. The left side of the mounting base extends outside the first groove. A second groove is formed on the left side of the mounting base. The second motor is fixedly mounted on the inner bottom wall of the second groove. The lead screw is fixedly mounted on the output shaft end of the second motor. The shaft seat is fixedly mounted on the top of the second groove. On the inner wall, the top of the lead screw is rotatably connected to the shaft seat, the moving block is threaded onto the lead screw, the left end of the moving block extends to the outside of the second groove, one end of the connecting arm is rotatably connected to the left end of the moving block through the first pin, the right end of the fixed block is rotatably connected to the other end of the connecting arm through the second pin, the left end of the fixed block is fixedly connected to the right side wall of the flaw detector assembly plate, the U-shaped hinge plate is fixedly installed at the bottom of the mounting base and located outside the first groove, the right end of the connecting arm is rotatably connected to the U-shaped hinge plate through the third pin, and the left end of the connecting arm is fixedly connected to the right side wall of the flaw detector assembly plate.

[0008] A further provision of this application is that the front sidewall of the movable block is slidably fitted with the front inner wall of the second groove, and the rear sidewall of the movable block is slidably fitted with the rear inner wall of the second groove.

[0009] A further feature of this application is that: an avoidance hole is provided on the inner wall of the left end of the main rod, the left end of the telescopic support rod passes through the avoidance hole, and a retaining ring is fixedly sleeved on the right end of the telescopic support rod, with the outer ring wall of the retaining ring slidingly fitting against the inner wall of the main rod.

[0010] A further feature of this application is that: an avoidance hole 2 is provided on the inner wall of the left end of the telescopic support rod 1, the left end of the telescopic support rod 2 passes through the avoidance hole 2, and a retaining ring 2 is fixedly sleeved on the right end of the telescopic support rod 2, with the outer ring wall of the retaining ring 2 slidingly fitting against the inner wall of the telescopic support rod 1.

[0011] A further feature of this application is that a placement frame is fixedly installed at the bottom right end of the main rod, a storage battery is fixedly installed inside the placement frame, a controller is fixedly installed on the outer right side wall of the placement frame, and the electric push rod, motor one, motor two and the controller are all electrically connected to the storage battery.

[0012] A further feature of this application is that a flaw detector assembly frame is fixedly installed on the top right end of the main rod, and an internal thread assembly hole is provided on one side of the flaw detector assembly frame, and an internal thread assembly groove is provided on one side of the flaw detector probe assembly plate.

[0013] A further feature of this application is that the diameter of the grip gradually decreases from both ends to the middle, and an anti-slip rubber sleeve is fixedly fitted on the outer wall of the grip.

[0014] This application includes at least one of the following beneficial technical effects: 1. This application controls the extension of the electric actuator to gradually slide the second telescopic support rod outwards towards the first telescopic support rod, and to gradually slide the first telescopic support rod outwards towards the main rod. This allows adjustment of the distance between the handle and the flaw detection probe mounting plate, thus adjusting the overall length of the device. This allows the inspector to stand and hold the handle to perform flaw detection work according to their own height, without requiring the inspector to bend over or squat to insert the flaw detection probe mounted on the flaw detection probe mounting plate into the narrow gap of the high-speed railway turnout. By controlling the electric actuator to retract and reset, the first telescopic support rod can be stored back into the main rod, and the second telescopic support rod can be stored back into the first telescopic support rod, thus shortening the overall length of the device and making it easier to store and carry.

[0015] 2. This application utilizes an angle adjustment mechanism to facilitate the adjustment of the orientation and tilt angle of the flaw detection probe installed on the flaw detection probe mounting plate, which can adapt to the flaw detection surface of the turnout at different angles and positions, greatly improving the convenience and efficiency of flaw detection work for inspection personnel. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram from the first perspective of this embodiment.

[0017] Figure 2 This is a three-dimensional structural diagram from the second perspective of this embodiment.

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure in a partial cross-section of the main view in this embodiment.

[0019] Figure 4 This is a three-dimensional structural diagram of the connector.

[0020] Figure 5 This is a front sectional view of the three-dimensional structure of the connector.

[0021] In the diagram, 1. Main rod; 2. Telescopic support rod one; 3. Telescopic support rod two; 4. Handle; 5. Connecting seat; 6. Groove one; 7. Motor one; 8. Mounting seat; 9. Groove two; 10. Motor two; 11. Lead screw; 12. Shaft seat; 13. Moving block; 14. Connecting arm one; 15. Fixing block; 16. U-shaped hinge plate; 17. Connecting arm two; 18. Flaw detector probe assembly plate; 19. Electric actuator; 20. Clearance hole one; 21. Retaining ring one; 22. Clearance hole two; 23. Retaining ring two; 24. Placement frame; 25. Battery; 26. Controller; 27. Flaw detector assembly frame. Detailed Implementation

[0022] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] See Figures 1-5 This application provides a high-speed railway turnout flaw detection telescopic rod, including a hollow main rod 1, a telescopic support rod 2 slidably installed inside the main rod 1, the telescopic support rod 2 being a hollow structure with an open right end, the left end of the telescopic support rod 2 extending outside the main rod 1, a telescopic support rod 3 slidably installed inside the telescopic support rod 2, the telescopic support rod 3 being a hollow structure with an open right end, the left end of the telescopic support rod 3 extending outside the telescopic support rod 2, a handle 4 fixedly connected to the outer wall of the right end of the main rod 1, a connecting seat 5 fixedly installed at the left end of the telescopic support rod 3, an angle adjustment mechanism provided on the connecting seat 5, a flaw detection probe mounting plate 18 provided on the angle adjustment mechanism, the angle adjustment mechanism being used to adjust the tilt angle and orientation of the flaw detection probe mounting plate 18, an electric actuator 19 fixedly installed on the inner wall of the right end of the main rod 1, the output shaft end of the electric actuator 19 penetrating the telescopic support rod 2 and fixedly connected to the inner wall of the left end of the telescopic support rod 3 (e.g., Figure 3 As shown, the electric actuator 19 is in an extended but not fully extended state. Utilizing the telescopic characteristic of the electric actuator 19, it can push the telescopic support rod 2 3 to slide within the telescopic support rod 1 2, and can also push the telescopic support rod 1 2 to slide within the main rod 1. This allows for adjustment of the distance between the handle 4 and the adjustment probe mounting plate 18, eliminating the need for inspectors to bend over or squat to insert the flaw detection probe installed on the flaw detection probe mounting plate 18 into the narrow gaps of high-speed railway turnouts (such as the side weld of the guard rail or the inner side of the rail base corner).

[0024] In this embodiment, a flaw detector mounting bracket 27 is fixedly installed on the top right end of the main rod 1. One side of the flaw detector mounting bracket 27 has an internally threaded mounting hole, and one side of the flaw detector probe mounting plate 18 has an internally threaded mounting groove. The design of the flaw detector probe mounting plate 18 and the flaw detector mounting bracket 27 facilitates the installation of a flaw detector for flaw detection of high-speed railway turnouts. The installed flaw detector can be a DK-800 digital ultrasonic flaw detector, which has an internal lithium battery power supply. Other models of flaw detectors can also be selected according to requirements. The design of the internally threaded mounting hole facilitates the use of screws to install and fix the flaw detector on the mounting plate. The flaw detector mounting bracket 27 features an internally threaded mounting groove to facilitate the installation and fixation of the flaw detector probe, which is electrically connected to the flaw detector, onto the flaw detector probe mounting plate 18 using screws or a combination of screws and locks. It should be noted that the flaw detector mounting bracket 27 and the flaw detector probe mounting plate 18 both have multiple internally threaded mounting holes and are evenly distributed, and all adopt a standardized thread design. This makes them compatible with the DK-800 digital ultrasonic flaw detector as well as other models of flaw detectors and flaw detector probes, eliminating the need to design separate adapter structures for different devices and improving the versatility of the tool.

[0025] In this embodiment, the angle adjustment mechanism includes a first motor 7, a mounting base 8, a second motor 10, a lead screw 11, a shaft seat 12, a moving block 13, a first connecting arm 14, a fixed block 15, a U-shaped hinge plate 16, and a second connecting arm 17. A groove 6 is formed on the left side of the connecting base 5. The first motor 7 is fixedly installed on the inner right wall of the groove 6. The mounting base 8 is fixedly installed on the output shaft end of the first motor 7. The left side of the mounting base 8 extends outside the groove 6. A second groove 9 is formed on the left side of the mounting base 8. The second motor 10 is fixedly installed on the inner bottom wall of the second groove 9. The lead screw 11 is fixedly installed... At the output shaft end of motor 2 10, shaft seat 12 is fixedly installed on the top inner wall of groove 2 9. The top end of lead screw 11 is rotatably connected to shaft seat 12. Moving block 13 is threaded onto lead screw 11. The left end of moving block 13 extends to the outside of groove 2 9. One end of connecting arm 14 is rotatably connected to the left end of moving block 13 via pin 1. The right end of fixed block 15 is rotatably connected to the other end of connecting arm 14 via pin 2. The left end of fixed block 15 is fixedly connected to the right side wall of flaw detector mounting plate 18. U-shaped hinge plate 16 is fixedly installed at the bottom of mounting base 8 and located at... Outside the groove 16, the right end of the connecting arm 2 17 is rotatably connected to the U-shaped hinge plate 16 via the pin 3. The left end of the connecting arm 2 17 is fixedly connected to the right side wall of the flaw detector mounting plate 18. Both motor 1 7 and motor 2 10 are reversible micro-sized low-speed motors. Motor 1 7 controls the rotation of the mounting base 8, thereby causing the flaw detector mounting plate 18 to rotate around the output shaft of motor 1 7, which can adjust the orientation of the flaw detector mounted on the flaw detector mounting plate 18. Motor 2 10 controls the rotation of the lead screw 11, using the moving block 13 and the lead screw... The threaded connection of rod 11 allows the moving block 13 to move within groove 2 9. With the coordinated action of connecting arm 14, fixing block 15, U-shaped hinge plate 16, and connecting arm 2 17, the tilt angle of the flaw detector mounted on the flaw detector mounting plate 18 can be adjusted. By adjusting the orientation and tilt angle of the flaw detector mounted on the flaw detector mounting plate 18, it can adapt to the flaw detection surfaces of different angles and positions of the turnout. This eliminates the need for frequent adjustments to the telescopic rod as a whole, significantly reducing the adjustment difficulty for operators and providing convenience for the work of inspection personnel.

[0026] In this embodiment, the front sidewall of the movable block 13 is slidably attached to the front inner wall of the groove 2 9, and the rear sidewall of the movable block 13 is slidably attached to the rear inner wall of the groove 2 9, which can ensure that the movable block 13 moves smoothly and steadily in the groove 2 9.

[0027] In this embodiment, a clearance hole 20 is provided on the inner wall of the left end of the main rod 1. The left end of the telescopic support rod 2 passes through the clearance hole 20. A retaining ring 21 is fixedly fitted on the right end of the telescopic support rod 2. The outer ring wall of the retaining ring 21 slides and fits against the inner wall of the main rod 1. The clearance hole 20 is designed to facilitate the smooth entry and exit of the telescopic support rod 2 into the main rod 1. The retaining ring 21 is designed to prevent the telescopic support rod 2 from detaching from the main rod 1. A clearance hole 22 is provided on the inner wall of the left end of the telescopic support rod 2. The left end of the telescopic support rod 3 passes through the clearance hole 22. A retaining ring 23 is fixedly fitted on the right end of the telescopic support rod 3. The outer ring wall of the retaining ring 23 slides and fits against the inner wall of the telescopic support rod 2. The clearance hole 22 is designed to facilitate the smooth entry and exit of the telescopic support rod 2 into the telescopic support rod 2. The retaining ring 23 is designed to prevent the telescopic support rod 23 from detaching from the telescopic support rod 2.

[0028] In this embodiment, a placement frame 24 is fixedly installed at the bottom right end of the main rod 1. A storage battery 25 is fixedly installed inside the placement frame 24. A controller 26 is fixedly installed on the outer right side wall of the placement frame 24. The electric push rod 19, motor 7, motor 10, and controller 26 are all electrically connected to the storage battery 25. The storage battery 25 is a rechargeable storage battery used to power the electric push rod 19, motor 7, motor 10, and controller 26. The controller is equipped with multiple switch buttons, which can be used to control the electric push rod 19, motor 7, and motor 10 to operate. The wiring connection method and control method are mature technologies in this field and have been fully disclosed, so they will not be described in detail here.

[0029] In this embodiment, the diameter of the handle 4 gradually decreases from both ends to the middle. An anti-slip rubber sleeve is fixedly fitted on the outer wall of the handle 4. The design of the handle 4's diameter gradually decreasing from both ends to the middle can conform to the natural grip curve of the palm. The design of the anti-slip rubber sleeve can not only increase the friction when the hand grips the handle 4, thus achieving the effect of preventing slippage and slipping, but also improve the comfort of the hand gripping the handle 4 by utilizing the elasticity and softness of the anti-slip rubber sleeve itself.

[0030] With the above structure, when the high-speed railway turnout flaw detection telescopic rod provided in this application is used, firstly, the flaw detector is installed and fixed on the flaw detector assembly frame 27 using screws, and the flaw detection probe that is electrically connected to the flaw detector is installed and fixed on the flaw detection probe assembly plate 18 using screws or a combination of screws and locks. After the lithium battery and storage battery 25 built into the flaw detector are fully charged, the entire flaw detection telescopic rod can be carried to the target turnout detection point of the high-speed railway. When conducting flaw detection on high-speed railway turnouts, the inspector holds handle 4, turns on the flaw detector, and controls the extension of electric push rod 19. This pushes the telescopic support rod 2 3 to gradually slide outwards from the telescopic support rod 1 2. The telescopic support rod 2 3 moves the connecting seat 5, and the retaining ring 2 3 on the telescopic support rod 2 3 slides along with it. When the retaining ring 2 2 3 touches the inner wall of the left end of the telescopic support rod 1 2, as the electric push rod 19 continues to extend, the retaining ring 2 2 3 can be used to push the telescopic support rod 1 2 to gradually slide outwards from the main rod 1. This allows the distance between handle 4 and flaw detector mounting plate 18 to be adjusted, thus adjusting the overall length of the device. Depending on the inspector's height, once the distance between handle 4 and flaw detector mounting plate 18 is adjusted appropriately, the inspector can stand and perform flaw detection work while holding handle 4. The inspector does not need to bend over or squat down to insert the flaw detector installed on the flaw detector mounting plate 18 into the narrow gap of the high-speed railway turnout. During the flaw detection inspection of high-speed railway turnouts using the flaw detection probe mounted on the flaw detection probe mounting plate 18, the output shaft of motor 7 drives the mounting base 8 to rotate, which in turn drives the angle adjustment component and the flaw detection probe mounting plate 18 to rotate. This causes the flaw detection probe on the flaw detection probe mounting plate 18 to rotate around the output shaft of motor 7, thereby adjusting the orientation of the probe. Simultaneously, the output shaft of motor 10 drives the lead screw 11 to rotate, and since the moving block 13 is threadedly connected to the lead screw 11, and the front and rear side walls of the moving block 13... The moving block 13 can be controlled to move linearly along the groove 9 by sliding and fitting against the inner walls of the front and rear sides of the groove 2 9 respectively. The moving block 13 drives the fixed block 15 to move through the connecting arm 14. At the same time, the flaw detection probe assembly plate 18 rotates at the hinge of the connecting arm 2 17 and the U-shaped hinge plate 16, so that the tilt angle of the flaw detection probe on the flaw detection probe assembly plate 18 can be adjusted. By adjusting the orientation and tilt angle of the flaw detection probe installed on the flaw detection probe assembly plate 18, it can be adapted to the flaw detection surface of the turnout at different angles and positions, which greatly improves the convenience and efficiency of the inspection personnel in performing flaw detection work. After the detection is completed, the flaw detector on the flaw detector assembly frame 27 is turned off. By controlling the motor 10 to run in reverse, the flaw detector on the flaw detector assembly plate 18 can be adjusted back to the initial angle position. Then, the electric push rod 19 is controlled to retract and reset, so that the telescopic support rod 12 can be stored back into the main rod 1 and the telescopic support rod 23 can be stored back into the telescopic support rod 12, thereby shortening the overall length of the device and making it easier to store and carry.

Claims

1. A telescopic rod for flaw detection of high-speed railway turnouts, characterized in that, The system includes a hollow main rod (1), inside which a telescopic support rod (2) is slidably installed. The telescopic support rod (2) is a hollow structure with an opening at the right end. The left end of the telescopic support rod (2) extends to the outside of the main rod (1). Inside the telescopic support rod (2), a telescopic support rod (3) is slidably installed. The telescopic support rod (3) is a hollow structure with an opening at the right end. The left end of the telescopic support rod (3) extends to the outside of the telescopic support rod (2). A handle is fixedly connected to the outer wall of the right end of the main rod (1). 4) A connecting seat (5) is fixedly installed on the left end of the telescopic support rod 2 (3). An angle adjustment mechanism is provided on the connecting seat (5). A flaw detection probe assembly plate (18) is provided on the angle adjustment mechanism. The angle adjustment mechanism is used to adjust the tilt angle and orientation of the flaw detection probe assembly plate (18). An electric push rod (19) is fixedly installed on the inner wall of the right end of the main rod (1). The output shaft end of the electric push rod (19) passes through the telescopic support rod 1 (2) and is fixedly connected to the inner wall of the left end of the telescopic support rod 2 (3).

2. The high-speed railway turnout flaw detection telescopic rod according to claim 1, characterized in that: The angle adjustment mechanism includes a motor (7), a mounting base (8), a motor (10), a lead screw (11), a shaft seat (12), a moving block (13), a connecting arm (14), a fixing block (15), a U-shaped hinge plate (16), and a connecting arm (17). A groove (6) is provided on the left side of the connecting base (5). The motor (7) is fixedly mounted on the inner right side wall of the groove (6). The mounting base (8) is fixedly mounted on the output shaft end of the motor (7). The left side of the mounting base (8) extends outside the groove (6). A groove (9) is provided on the left side of the mounting base (8). The motor (10) is fixedly mounted on the bottom inner wall of the groove (9). The lead screw (11) is fixedly mounted on the output shaft end of the motor (10). The shaft seat (12) is fixedly mounted on the inner right side of the groove (9). On the top inner wall, the top end of the lead screw (11) is rotatably connected to the bearing seat (12), the moving block (13) is threaded on the lead screw (11), the left end of the moving block (13) extends to the outside of the second groove (9), one end of the first connecting arm (14) is rotatably connected to the left end of the moving block (13) through the first pin, the right end of the fixed block (15) is rotatably connected to the other end of the first connecting arm (14) through the second pin, the left end of the fixed block (15) is fixedly connected to the right side wall of the flaw detector mounting plate (18), the U-shaped hinge plate (16) is fixedly installed at the bottom of the mounting base (8) and located outside the first groove (6), the right end of the second connecting arm (17) is rotatably connected to the U-shaped hinge plate (16) through the third pin, and the left end of the second connecting arm (17) is fixedly connected to the right side wall of the flaw detector mounting plate (18).

3. The high-speed railway turnout flaw detection telescopic rod according to claim 2, characterized in that: The front sidewall of the movable block (13) slides against the front inner wall of the groove (9), and the rear sidewall of the movable block (13) slides against the rear inner wall of the groove (9).

4. The high-speed railway turnout flaw detection telescopic rod according to claim 1, characterized in that: The left end of the main rod (1) has an avoidance hole (20) on its inner wall. The left end of the telescopic support rod (2) passes through the avoidance hole (20). The right end of the telescopic support rod (2) is fixedly fitted with a retaining ring (21). The outer ring wall of the retaining ring (21) slides against the inner wall of the main rod (1).

5. The high-speed railway turnout flaw detection telescopic rod according to claim 1, characterized in that: The left end of the telescopic support rod (2) has a clearance hole (22) on its inner wall. The left end of the telescopic support rod (3) passes through the clearance hole (22). The right end of the telescopic support rod (3) is fixedly fitted with a retaining ring (23). The outer ring wall of the retaining ring (23) slides against the inner wall of the telescopic support rod (2).

6. The high-speed railway turnout flaw detection telescopic rod according to claim 2, characterized in that: A placement frame (24) is fixedly installed at the bottom right end of the main rod (1). A storage battery (25) is fixedly installed inside the placement frame (24). A controller (26) is fixedly installed on the outer right side wall of the placement frame (24). The electric push rod (19), motor one (7), motor two (10) and controller (26) are all electrically connected to the storage battery (25).

7. The high-speed railway turnout flaw detection telescopic rod according to claim 1, characterized in that: The top right end of the main rod (1) is fixedly installed with a flaw detector assembly frame (27). The flaw detector assembly frame (27) has an internal thread assembly hole on one side and an internal thread assembly groove on one side of the flaw detector probe assembly plate (18).

8. The high-speed railway turnout flaw detection telescopic rod according to claim 1, characterized in that: The diameter of the grip (4) gradually decreases from both ends to the middle, and an anti-slip rubber sleeve is fixedly fitted on the outer wall of the grip (4).

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