A cylinder liner flaw detection and positioning device

Abstract

The present invention relates to the technical field of cylinder flaw detection, and specifically to a cylinder liner flaw detection positioning device. It includes a turntable and several mounting plates installed thereon, a rotating transmission mechanism, a bearing frame, a bottom bearing seat and a clamping assembly. An ultrasonic detection assembly and a rotating drive assembly are arranged on the outer side of the mounting plate. The ultrasonic detection assembly includes a first detection system and a second detection system. The first detection system is provided with a cylinder wall ultrasonic detection head for flaw detection of the cylinder wall, and the second detection system is provided with a cylinder mouth ultrasonic detection head for flaw detection of the cylinder mouth. The second detection system also includes a flipping mechanism. The clamping assembly includes a fixed mounting plate fixed on the bearing frame and a lifting mounting plate that can be lifted and lowered on the bearing frame. Both the fixed mounting plate and the lifting mounting plate are provided with a transverse clamping mechanism, a longitudinal clamping mechanism, an outer wall clamping claw and an extrusion transmission mechanism. The present invention is suitable for flaw detection of small batches and multiple models of cylinder liners, which improves the detection efficiency and the versatility of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder flaw detection, and in particular to a cylinder sleeve flaw detection positioning device. Background Art

[0002] In the field of industrial production, the quality inspection of cylinder liners in cylinders is crucial to ensure the performance and reliability of equipment. Traditional cylinder liner flaw detection technology has many limitations:

[0003] Poor versatility of testing equipment: Traditional testing equipment is usually designed for specific models of cylinder liners and lacks the ability to adapt to different models of cylinder liners. When it is necessary to test different models of cylinders, the corresponding fixtures must be replaced, which is particularly inconvenient in small-batch product testing. Because small-batch production often involves multiple cylinder types, frequent fixture replacement not only takes a lot of time, but also requires complex debugging work after each replacement to ensure the accuracy and stability of the test, which greatly hinders the efficient conduct of the test work and increases production costs and time costs. Low detection efficiency: Due to the cumbersome process of fixture replacement and debugging, the entire detection process is lengthened and the detection efficiency is greatly reduced. For example, on an automated production line, if the detection process is frequently interrupted to replace the fixture and debug the equipment due to the switching of cylinder liner models, it will seriously affect the production progress, reduce production efficiency, and fail to meet the needs of modern industrial production for efficient and flexible detection. Detection accuracy is difficult to guarantee: In the process of frequent fixture replacement and debugging, human errors and equipment installation errors are easily introduced, which will have an adverse effect on the detection accuracy. Moreover, traditional testing equipment may lack the means to accurately detect cylinder liners in all directions and at multiple angles, making it difficult to detect some tiny defects hidden in complex areas, resulting in inaccurate assessment of cylinder liner quality. This may cause defective cylinder liners to flow into subsequent production links, increasing product quality risks. Summary of the invention

[0004] Based on this, it is necessary to provide a cylinder liner flaw detection and positioning device to address the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] The present invention provides a cylinder liner flaw detection and positioning device, comprising a turntable and a plurality of mounting plates mounted thereon, each mounting plate being provided with a rotary transmission mechanism, a bearing frame and a bottom bearing seat for supporting the bottom of the cylinder liner being provided at the output end of the rotary transmission mechanism, a clamping assembly for clamping both ends of the cylinder liner being provided on the bearing frame, an ultrasonic detection assembly and a rotary drive assembly being provided on the outer side of the mounting plate, the ultrasonic detection assembly comprising a first detection system and a second detection system, the first detection system being provided with a cylinder wall ultrasonic detection head for flaw detection of the cylinder wall, the second detection system being provided with a cylinder mouth ultrasonic detection head for flaw detection of the cylinder mouth, the cylinder wall ultrasonic detection head and the cylinder mouth ultrasonic detection head being both capable of being lifted and lowered and horizontally telescopically arranged on the side of the turntable, the second detection system further comprising a flipping mechanism, the flipping mechanism being arranged above the turntable and being connected to the cylinder mouth ultrasonic detection head transmission Dynamic connection, the first detection system and the second detection system both include a marking positioning mechanism, the marking positioning mechanism is located beside the cylinder wall ultrasonic detection head or the cylinder mouth ultrasonic detection head, the rotation drive component can be connected to the rotation transmission mechanism, the clamping component includes a fixed mounting plate fixed on the carrier and a lifting mounting plate that can be lifted and lowered on the carrier, the length direction of the fixed mounting plate is set to horizontal, the fixed mounting plate and the lifting mounting plate are both provided with a horizontal clamping mechanism, a longitudinal clamping mechanism, an outer wall clamping claw and an extrusion transmission mechanism, the fixed mounting plate and the lifting mounting plate are both symmetrically provided with two groups of horizontal clamping mechanisms along the vertical center plane, each group of horizontal clamping mechanisms is provided with a group of longitudinal clamping mechanisms, each group of longitudinal clamping mechanisms is provided with two outer wall clamping claws, and the horizontal clamping mechanism and the longitudinal clamping mechanism are both connected to the extrusion transmission mechanism.

[0007] Preferably, the first detection system and the second detection system also include a first transverse movement mechanism, a first lifting mechanism and an elastic resistance device installed beside the turntable. In the first detection system, the first transverse movement mechanism is arranged on the output end of the first lifting mechanism, the cylinder wall ultrasonic detection head is arranged on the output end of the first transverse movement mechanism through the elastic resistance device, the mark positioning mechanism is arranged on the output end of the first transverse movement mechanism, the cylinder wall ultrasonic detection head is arranged horizontally, the first detection system is also provided with a horizontal displacement mechanism, and the first lifting mechanism is arranged on the output end of the horizontal displacement mechanism. In the second detection system, the first lifting mechanism is arranged on the output end of the first transverse movement mechanism, and a rotatable turntable is provided on the output end of the first lifting mechanism, the cylinder mouth ultrasonic detection head is arranged on the turntable through the elastic resistance device, the flipping mechanism and the mark positioning mechanism are both arranged on the turntable, and the mark positioning mechanism is provided with a mark head that can be extended horizontally or vertically.

[0008] Preferably, the elastic resistance device includes a detection mounting plate, a first telescopic rod, a fourth spring and a resistance mounting frame. In the first detection system, the detection mounting plate is fixedly mounted on the output end of the first transverse movement mechanism, the two ends of the first telescopic rod are respectively fixedly connected to the resistance mounting frame and the detection mounting plate, the fourth spring is sleeved on the first telescopic rod, and the cylinder wall ultrasonic detection head is fixedly mounted on the resistance mounting frame. In the second detection system, the detection mounting plate is fixedly mounted on the output end of the first lifting mechanism, the first telescopic rod is located between the resistance mounting frame and the detection mounting plate, one end of the first telescopic rod is fixedly connected to the resistance mounting frame, the other end of the first telescopic rod is hinged to the detection mounting plate, the cylinder mouth ultrasonic detection head is fixedly mounted on the resistance mounting frame, and the flipping mechanism is transmission-connected to the resistance mounting frame.

[0009] Preferably, the flipping mechanism includes a first linear drive, a sliding collar and an articulated rod, the first linear drive is fixedly mounted on the detection mounting plate, the sliding collar is vertically slidably arranged on the detection mounting plate, one end of the articulated rod is hinged to the sliding collar, and the other end of the articulated rod is hinged to the abutment mounting frame.

[0010] Preferably, the transverse clamping mechanism includes a horizontal sliding seat, a transmission contact plate, a first spring and a first fixed plate, the fixed mounting plate and the lifting mounting plate are transversely provided with a first horizontal groove, the horizontal sliding seat is slidably arranged on the fixed mounting plate and the lifting mounting plate through the first horizontal groove, the first spring is horizontally and transversely arranged, one end of the first spring is fixedly connected to the groove bottom of the first horizontal groove, the other end of the first spring is fixedly connected to the side wall of the horizontal sliding seat, a transmission groove for transmission connection of the transmission contact plate is provided in the middle of the horizontal sliding seat, the transmission contact plate is transmission-connected to the extrusion transmission mechanism, a transmission chamfer is provided at one end of the transmission contact plate close to the horizontal sliding seat, the transmission chamfer is fitted with one end of the transmission groove in the middle of the horizontal sliding seat close to the first spring, and the inclination direction of the transmission chamfer is away from One end of the horizontal sliding seat deviates toward the side close to the bottom bearing seat when approaching the horizontal sliding seat, and the longitudinal clamping mechanism includes a telescopic connecting plate, a second spring and a transmission device. The length direction of the telescopic connecting plate is perpendicular to the length direction of the fixed mounting plate, and one end of the telescopic connecting plate is fixedly connected to the horizontal sliding seat, one of the outer wall clamping claws is fixedly connected to the horizontal sliding seat, and the other outer wall clamping claw is fixedly installed on the end of the telescopic connecting plate away from the horizontal sliding seat. The transmission device is installed on the horizontal sliding seat, and the transmission device is transmission-connected to the end of the telescopic connecting plate away from the horizontal sliding seat, and the extrusion transmission mechanism is transmission-connected to the transmission device, one end of the second spring is fixedly connected to the end of the telescopic connecting plate away from the horizontal sliding seat, and the other end of the second spring is fixedly connected to the horizontal sliding seat.

[0011] Preferably, the transmission device includes a U-shaped oil pressure tube, a first piston rod, a second piston rod and a second sliding seat. The U-shaped oil pressure tube is fixedly installed on the horizontal sliding seat. The U-shaped oil pressure tube is composed of a first straight section, a U-shaped section and a second straight section and is hollow. Liquid is arranged inside the U-shaped oil pressure tube. The first piston rod is slidingly arranged in the first straight section, and the second piston rod is arranged in the second straight section. One end of the first piston rod away from the U-shaped oil pressure tube is fixedly connected to one end of the telescopic connecting plate away from the horizontal sliding seat. The second sliding seat is horizontally slidably arranged on the extrusion transmission mechanism, and one end of the second piston rod away from the U-shaped oil pressure tube is fixedly connected to the second sliding seat.

[0012] Preferably, the extrusion transmission mechanism includes an extrusion transmission plate, a telescopic connecting rod and a second mounting frame. An extrusion transmission plate is provided on one side of the fixed mounting plate and the lifting mounting plate away from the center of the turntable. The length direction of the extrusion transmission plate is consistent with the length direction of the fixed mounting plate. The extrusion transmission plate is connected to the fixed mounting plate and the lifting mounting plate through a telescopic connecting rod. The second mounting frame is horizontally arranged, and the length direction of the second mounting frame is perpendicular to the length direction of the fixed mounting plate. One end of the second mounting frame is fixedly connected to the extrusion transmission plate, and the other end of the second mounting frame is fixedly connected to the transmission contact plate. An extrusion column for extruding the extrusion transmission plate is provided on the outer side of the turntable.

[0013] Preferably, the clamping assembly also includes a height adjustment mechanism and an adjustment drive mechanism, the adjustment drive mechanism is arranged on the outer side of the turntable, and each lifting mounting plate is installed with a height adjustment mechanism, the height adjustment mechanism includes a threaded shaft, a threaded seat, an extrusion plate, a friction disk and a third spring, the threaded seat is fixedly mounted on the lifting mounting plate, the threaded shaft is vertically arranged on the supporting frame, the threaded seat is threadedly matched with the threaded shaft, the extrusion plate is fixedly mounted on the top of the threaded shaft, the friction disk is arranged between the extrusion plate and the top of the supporting frame, and the friction disk is elastically mounted on the supporting frame through the third spring, the adjustment drive mechanism includes a lifting mounting frame, a first adjusting rotating shaft and a resistance extrusion disk, the lifting mounting frame that can be lifted and lowered is arranged above the threaded shaft, the first adjusting rotating shaft is rotatably mounted on the threaded shaft, the resistance extrusion disk matched with the friction disk is fixedly mounted on the lifting mounting frame, and the threaded shaft and the first adjusting rotating shaft are snap-fitted.

[0014] Preferably, the rotary transmission mechanism includes a supporting disc, a fixed seat, a first rotating shaft, a driving gear and a ring gear. The fixed seat is fixedly mounted on the mounting plate, the supporting disc is axially connected to the fixed seat, the first rotating shaft is horizontally mounted on the fixed seat, the axial direction of the first rotating shaft is consistent with the radial length direction of the turntable, the driving gear is fixedly mounted on the first rotating shaft, the ring gear is fixedly mounted on the lower half of the supporting disc, the ring gear is meshed with the driving gear, and the rotary drive assembly includes a horizontally displaceable ejection mounting frame and a rotatable second adjustment shaft, and the second adjustment shaft can be snap-fitted with the first rotating shaft.

[0015] Preferably, a visual detection camera is also provided on the outside of the turntable.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The first detection system and the second detection system in the present invention are specially optimized for the key parts of the cylinder liner. The cylinder wall ultrasonic detection head and the cylinder mouth ultrasonic detection head can achieve precise position control and close fit to the cylinder liner surface through the corresponding transverse mechanism, lifting mechanism and elastic resistance device, etc., to ensure the stable transmission and effective reception of ultrasonic signals. With the rotation function, the cylinder liner can be automatically detected in all directions and at multiple angles, effectively avoiding detection blind spots, improving the ability to detect minor defects, and ensuring the accuracy and reliability of the detection results. Compared with traditional detection equipment, it can more accurately detect hidden defects inside the cylinder liner and improve the level of product quality control.

[0018] 2. The cylinder liner flaw detection and positioning device of the present invention greatly enhances the adaptability of the equipment to the detection of cylinder liners of different models through the unique clamping component design. Multiple groups of transverse clamping mechanisms, longitudinal clamping mechanisms, outer wall clamping claws, and extrusion transmission mechanisms are set on the fixed mounting plate and the lifting mounting plate in the clamping assembly. These mechanisms cooperate with each other and can automatically correct the deviation and stably clamp according to the shape and size of the cylinder liner. Whether it is a circular or rectangular cylinder liner, no matter how long it is, it can be reliably fixed without replacing the clamp, which effectively solves the problem of frequent replacement of clamps due to different cylinder liner models in traditional detection equipment. It is especially suitable for the detection scenarios of small batches and multiple models of cylinder liners, which greatly improves the detection efficiency and versatility of the equipment.

[0019] 3. The coordinated use of the height adjustment mechanism and the adjustment drive mechanism further improves the versatility of the equipment. For cylinder liners of different lengths, the height of the lifting mounting plate can be easily adjusted by adjusting the drive mechanism, so that the equipment can quickly adapt to cylinder liners of various specifications, reducing the detection difficulties caused by differences in cylinder liners length, broadening the range of cylinder liners that can be detected by the equipment, and reducing production costs and detection preparation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a cylinder liner flaw detection and positioning device;

[0021] Figure 2 It is a top view of a cylinder liner flaw detection and positioning device;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of a clamping assembly in a cylinder liner flaw detection and positioning device;

[0023] Figure 4It is a three-dimensional structural schematic diagram of the first detection system in a cylinder liner flaw detection and positioning device;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of a second detection system and a clamping assembly in a cylinder liner flaw detection and positioning device;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the second detection system in the cylinder liner flaw detection and positioning device;

[0026] Figure 7 A schematic diagram of the three-dimensional structure of the clamping assembly in a cylinder liner flaw detection and positioning device Figure 1 ;

[0027] Figure 8 A schematic diagram of the three-dimensional structure of the clamping assembly in a cylinder liner flaw detection and positioning device Figure 2 ;

[0028] Fig. 9 It is a schematic diagram of a partial three-dimensional structure of a clamping assembly in a cylinder liner flaw detection and positioning device;

[0029] Fig.10 It is a three-dimensional exploded view of the rotary transmission mechanism in a cylinder liner flaw detection and positioning device;

[0030] Fig.11 It is a partial three-dimensional structural schematic diagram of a second detection system of a rotary transmission mechanism in a cylinder liner flaw detection and positioning device;

[0031] Fig.12 The invention is a three-dimensional structural diagram of an adjusting driving mechanism in a cylinder liner flaw detection and positioning device.

[0032] The numbers in the figure are:

[0033] 1. Turntable; 2. Mounting plate; 3. Bottom bearing seat; 4. Carrying frame; 5. Rotary transmission mechanism; 6. Clamping assembly; 7. Ultrasonic detection assembly; 8. Rotary drive assembly; 9. Cylinder wall ultrasonic detection head; 11. Cylinder mouth ultrasonic detection head; 12. First transverse movement mechanism; 13. First lifting mechanism; 14. Elastic resistance device; 15. Flipping mechanism; 16. Marking positioning mechanism; 17. Fixed mounting plate; 18. Lifting mounting plate; 19. Transverse clamping mechanism; 21. Longitudinal clamping mechanism; 22. Outer wall clamping claw; 23. Extrusion transmission mechanism; 24. Detection mounting plate; 25. First telescopic rod; 26. Fourth spring; 27. Resistance mounting frame; 28. First linear drive; 29. ​​Sliding collar; 31. Articulated rod; 32. Marking head; 33. Horizontal slide Moving seat; 34, transmission contact plate; 35, first spring; 37, telescopic connecting plate; 38, second spring; 39, U-shaped oil pressure pipe; 41, first piston rod; 42, second piston rod; 43, second sliding seat; 44, extrusion transmission plate; 45, telescopic connecting rod; 46, second mounting bracket; 48, extrusion column; 49, height adjustment mechanism; 51, adjustment drive mechanism; 52, threaded shaft; 53, threaded seat; 54, extrusion plate; 55, friction plate; 56, third spring; 57, lifting mounting bracket; 58, first adjustment shaft; 59, contact extrusion plate; 61, bearing disc; 62, fixed seat; 63, first rotating shaft; 64, driving gear; 65, ring gear; 66, ejection mounting bracket; 67, second adjustment shaft; 68, visual detection camera. DETAILED DESCRIPTION

[0034] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] like Figure 1-10 The cylinder liner flaw detection positioning device shown in the figure includes a turntable 1 and a plurality of mounting plates 2 mounted thereon, each mounting plate 2 is provided with a rotary transmission mechanism 5, a bearing frame 4 and a bottom bearing seat 3 for supporting the bottom of the cylinder liner are provided at the output end of the rotary transmission mechanism 5, a clamping assembly 6 for clamping the two ends of the cylinder liner is installed on the bearing frame 4, an ultrasonic detection assembly 7 and a rotary drive assembly 8 are provided on the outer side of the mounting plate 2, the ultrasonic detection assembly 7 includes a first detection system and a second detection system, the first detection system is provided with a cylinder wall ultrasonic detection head 9 (such as Figure 4 As shown, the second detection system is provided with a cylinder mouth ultrasonic detection head 11 (as shown in FIG. Figure 6As shown in the figure, the cylinder wall ultrasonic detection head 9 and the cylinder mouth ultrasonic detection head 11 are both capable of being lifted and retracted horizontally and are arranged on the side of the turntable 1. The second detection system also includes a flipping mechanism 15, which is arranged above the turntable 1 and is connected to the cylinder mouth ultrasonic detection head 11 by transmission. The first detection system and the second detection system both include a marking positioning mechanism 16, which is located on the side of the cylinder wall ultrasonic detection head 9 or the cylinder mouth ultrasonic detection head 11. The rotation drive component 8 can be connected to the rotation transmission mechanism 5 by transmission. The clamping component 6 includes a fixed mounting plate 17 fixed on the carrier 4 and a lifting mounting plate 18 that can be lifted and retracted on the carrier 4. The length direction of the fixed mounting plate 17 is set to be horizontal (as shown in the figure). Figure 7 As shown in the figure, the fixed mounting plate 17 and the lifting mounting plate 18 are both provided with a transverse clamping mechanism 19, a longitudinal clamping mechanism 21, an outer wall clamping claw 22 and an extrusion transmission mechanism 23. The fixed mounting plate 17 and the lifting mounting plate 18 are both provided with two groups of transverse clamping mechanisms 19 symmetrically along the vertical center plane, each group of transverse clamping mechanisms 19 is provided with a group of longitudinal clamping mechanisms 21, each group of longitudinal clamping mechanisms 21 is provided with two outer wall clamping claws 22, and the transverse clamping mechanism 19 and the longitudinal clamping mechanism 21 are both transmission-connected to the extrusion transmission mechanism 23.

[0036] There are multiple stations distributed in a ring outside the turntable 1, which are the loading station, scanning station, first detection station, second detection station, unloading station, adjustment station, etc. The cylinder sleeve is installed on the turntable 1, and the cylinder sleeve is driven to move by the rotation of the turntable 1. The clamping assembly 6 is used to clamp the cylinder sleeve, and the ultrasonic detection assembly 7 is used to perform flaw detection on the cylinder sleeve. The rotary drive assembly 8 is used to drive the rotary transmission mechanism 5 to rotate and then drive the cylinder sleeve and the clamping assembly 6 installed on the rotary transmission mechanism 5 to rotate synchronously, so as to realize the face-changing function, and switch the detection surface facing the ultrasonic detection assembly 7 to prevent the clamping assembly 6 from interfering with the flaw detection process. The design purpose of the clamping assembly 6 is to improve the adaptability of equipment detection and the cylinder type of the detected product. It can play a stable clamping function for cylinders of various shapes and lengths, without the need to replace the fixture, and will not interfere with the detection process. The first detection system can detect the outer wall and the inside of the cylinder liner. Through the fit of the cylinder wall ultrasonic detection head 9 and the outer cylinder wall, it can cooperate with the rotary drive assembly 8 and the rotary transmission mechanism 5 to realize the full range of automatic detection functions. The second detection system can perform ultrasonic detection on the cylinder mouth of the cylinder liner. By setting the flip mechanism 15, the cylinder mouth ultrasonic detection head 11 in the second detection system can be flipped 90 degrees, so that it can be switched from a vertical state to a horizontal state, and can be extended into the inner wall of the cylinder liner, and the cylinder liner can be inspected from the inside when necessary. When quality defects are detected, the defective part is positioned and marked by the marking and positioning mechanism 16 to facilitate subsequent repairs. The lifting mounting plate 18 in the clamping assembly 6 can adjust the height according to the demand, the outer wall clamping claw 22 installed on the fixed mounting plate 17 is used to clamp the bottom of the cylinder, and the outer wall clamping claw 22 installed on the lifting mounting plate 18 is used to clamp the top of the cylinder. The transverse clamping mechanism 19 and the longitudinal clamping mechanism 21 automatically correct the cylinder located at the center under the action of elastic force and drive the outer wall clamping claw 22 to clamp, and can adapt to the outer side walls of different shapes, such as rectangle and circle. When loading and unloading is required, the extrusion transmission mechanism 23 can drive the transverse clamping mechanism 19 and the longitudinal clamping mechanism 21 to expand outward, that is, drive the outer wall clamping claw 22 to move outward to release the clamped cylinder sleeve, so as to facilitate the subsequent loading and unloading.

[0037] The first detection system and the second detection system also include a first transverse movement mechanism 12, a first lifting mechanism 13 and an elastic resistance device 14 installed beside the turntable 1. Figure 3As shown in the figure, the first transverse movement mechanism 12 is arranged at the output end of the first lifting mechanism 13, the cylinder wall ultrasonic detection head 9 is arranged at the output end of the first transverse movement mechanism 12 through the elastic resistance device 14, the mark positioning mechanism 16 is arranged at the output end of the first transverse movement mechanism 12, the cylinder wall ultrasonic detection head 9 is arranged horizontally, the first detection system is also provided with a horizontal displacement mechanism, the first lifting mechanism 13 is arranged at the output end of the horizontal displacement mechanism, and in the second detection system (as shown in the figure Figure 5 As shown in the figure, the first lifting mechanism 13 is arranged on the output end of the first transverse movement mechanism 12, and a rotatable turntable is provided on the output end of the first lifting mechanism 13. The cylinder mouth ultrasonic detection head 11 is arranged on the turntable through an elastic resistance device 14, and the flipping mechanism 15 and the marking positioning mechanism 16 are both arranged on the turntable, and the marking positioning mechanism 16 is provided with a marking head 32 that can be extended horizontally or vertically.

[0038] During the flaw detection of the outer wall of the cylinder liner by the first detection system, the displacement of the cylinder wall ultrasonic detection head 9 is controlled by the first transverse movement mechanism 12, the first lifting mechanism 13 and the horizontal displacement mechanism, so that the cylinder wall ultrasonic detection head 9 can accurately fit the outer wall of the cylinder liner and scan the corresponding surface.

[0039] During the flaw detection of the cylinder liner bore or inner wall by the second detection system, the first transverse movement mechanism 12 and the first lifting mechanism 13 are arranged in such a way that the cylinder bore ultrasonic detection head 11 can be better extended into the center of the carrier 4 to prevent interference during the detection process. The setting of the turntable enables the cylinder bore ultrasonic detection head 11 to rotate around the axis of the turntable. When the axis of the turntable matches the central axis of the cylinder liner, the cylinder bore ultrasonic detection head 11 can be driven by the turntable to move in a circular manner around the cylinder liner, thereby improving the detection efficiency and accuracy. The marking head 32 is used to accurately mark the damaged position after damage is detected.

[0040] The elastic resistance device 14 includes a detection mounting plate 24, a first telescopic rod 25, a fourth spring 26 and a resistance mounting frame 27. In the first detection system, the detection mounting plate 24 is fixedly mounted on the output end of the first transverse movement mechanism 12, and the two ends of the first telescopic rod 25 are respectively fixedly connected to the resistance mounting frame 27 and the detection mounting plate 24. The fourth spring 26 is sleeved on the first telescopic rod 25, and the cylinder wall ultrasonic detection head 9 is fixedly mounted on the resistance mounting frame 27. In the second detection system, the detection mounting plate 24 is fixedly mounted on the output end of the first lifting mechanism 13, the first telescopic rod 25 is located between the resistance mounting frame 27 and the detection mounting plate 24, one end of the first telescopic rod 25 is fixedly connected to the resistance mounting frame 27, and the other end of the first telescopic rod 25 is hinged to the detection mounting plate 24, the cylinder mouth ultrasonic detection head 11 is fixedly mounted on the resistance mounting frame 27, and the flipping mechanism 15 is transmission-connected to the resistance mounting frame 27.

[0041] The elastic resistance device 14 provides a certain resistance buffering capability for the cylinder wall ultrasonic detection head 9 and the cylinder mouth ultrasonic detection head 11, so that the cylinder wall ultrasonic detection head 9 and the cylinder mouth ultrasonic detection head 11 can fit more closely with the cylinder liner. When the detection mounting plate 24 moves, it drives the cylinder wall ultrasonic detection head 9 and other structures in the elastic resistance device 14 to move synchronously. The first telescopic rod 25 is used to connect the resistance mounting frame 27, and the fourth spring 26 provides elastic force for the cylinder wall ultrasonic detection head 9 and the cylinder mouth ultrasonic detection head 11.

[0042] The flip mechanism 15 includes a first linear drive 28, a sliding collar 29 and a hinge rod 31. The first linear drive 28 (eg Figure 6 As shown in the figure, the detection mounting plate 24 is fixedly mounted thereon, the sliding collar 29 is vertically slidably arranged on the detection mounting plate 24, one end of the hinged rod 31 is hinged to the sliding collar 29, and the other end of the hinged rod 31 is hinged to the abutment mounting frame 27.

[0043] In the initial state, the cylinder mouth ultrasonic detection head 11 is in a vertical state. At this time, the cylinder mouth ultrasonic detection head 11 is used to perform flaw detection on the cylinder mouth. When the inner wall of the cylinder liner needs to be detected, the first linear drive 28 drives the sliding ring 29 to slide vertically. When sliding, the sliding ring 29 drives the articulated rod 31 to deflect, and then the articulated rod 31 is used to mobilize the interference mounting frame 27 hinged thereto to move. When the interference mounting frame 27 moves, it drives the elastic interference device 14 and the cylinder mouth ultrasonic detection head 11 to synchronously flip ninety degrees around the hinge axis of the first telescopic rod 25 and the detection mounting plate 24, thereby realizing the function of driving the cylinder mouth ultrasonic detection head 11 to flip ninety degrees. At this time, the cylinder mouth ultrasonic detection head 11 can perform flaw detection on the inner wall of the cylinder liner.

[0044] It is worth mentioning that the marking head 32 in the second detection system will not flip synchronously with it. It will only mark the damage at the cylinder mouth when performing cylinder mouth detection. When damage is detected on the inner wall, the marking head 32 in the first detection system can be used to mark the outer wall of the cylinder liner.

[0045] The horizontal clamping mechanism 19 includes a horizontal sliding seat 33, a transmission contact plate 34 and a first spring 35. The fixed mounting plate 17 and the lifting mounting plate 18 are horizontally provided with a first horizontal groove, and the horizontal sliding seat 33 is slidably arranged on the fixed mounting plate 17 and the lifting mounting plate 18 through the first horizontal groove (such as Figure 8As shown in the figure, the first spring 35 is horizontally arranged, one end of the first spring 35 is fixedly connected to the bottom of the first horizontal groove, the other end of the first spring 35 is fixedly connected to the side wall of the horizontal sliding seat 33, a transmission groove for transmission contact plate 34 to be transmission-connected is provided in the middle of the horizontal sliding seat 33, the transmission contact plate 34 is transmission-connected to the extrusion transmission mechanism 23, a transmission chamfer is provided at one end of the transmission contact plate 34 close to the horizontal sliding seat 33, the transmission chamfer is fitted with one end of the transmission groove in the middle of the horizontal sliding seat 33 close to the first spring 35, the inclination direction of the transmission chamfer is offset from one end away from the horizontal sliding seat 33 to the side close to the bottom bearing seat 3 when approaching the horizontal sliding seat 33, the longitudinal clamping mechanism 21 includes a telescopic connecting plate 37, The second spring 38 and the transmission device, the length direction of the telescopic connecting plate 37 is perpendicular to the length direction of the fixed mounting plate 17, one end of the telescopic connecting plate 37 is fixedly connected to the horizontal sliding seat 33, one of the outer wall clamping claws 22 is fixedly connected to the horizontal sliding seat 33, the other outer wall clamping claw 22 is fixedly installed on the end of the telescopic connecting plate 37 away from the horizontal sliding seat 33, the transmission device is installed on the horizontal sliding seat 33, the transmission device is transmission-connected to the end of the telescopic connecting plate 37 away from the horizontal sliding seat 33, the extrusion transmission mechanism 23 is transmission-connected to the transmission device, one end of the second spring 38 is fixedly connected to the end of the telescopic connecting plate 37 away from the horizontal sliding seat 33, and the other end of the second spring 38 is fixedly connected to the horizontal sliding seat 33.

[0046] The extrusion transmission mechanism 23 is driven to drive the transverse clamping mechanism 19 to work, and the extrusion transmission mechanism 23 drives the transmission contact plate 34 connected thereto to move, and the transmission chamfer of the transmission contact plate 34 cooperates with the transmission groove in the horizontal sliding seat 33, driving the horizontal sliding seat 33 to slide horizontally in the first horizontal groove, and the horizontal sliding seat 33 overcomes the elastic force of the first spring 35 to move, so that the first spring 35 is compressed, and the horizontal sliding seat 33 drives the longitudinal clamping mechanism 21 and the outer wall clamping claw 22 installed thereon to move synchronously when sliding horizontally. At the same time, the extrusion transmission mechanism 23 drives the transmission device connected thereto to work, and the transmission device drives the telescopic connecting plate 37 to move toward the side away from the horizontal sliding seat 33, and the telescopic connecting plate 37 overcomes the elastic force of the second spring 38 to move, so that the outer wall clamping claws 22 are moved away from each other, which is convenient for taking and releasing materials from the cylinder sleeve.

[0047] The transmission device includes a U-shaped oil pressure pipe 39, a first piston rod 41, a second piston rod 42 and a second sliding seat 43. The U-shaped oil pressure pipe 39 is fixedly mounted on the horizontal sliding seat 33. Fig. 9As shown in the figure, the telescopic connecting plate 37 is composed of a first straight segment, a U-shaped segment and a second straight segment and is hollow. Liquid is provided inside the U-shaped oil pressure tube 39. The first piston rod 41 is slidably arranged in the first straight segment, and the second piston rod 42 is arranged in the second straight segment. The end of the first piston rod 41 away from the U-shaped oil pressure tube 39 is fixedly connected to the end of the telescopic connecting plate 37 away from the horizontal sliding seat 33. The second sliding seat 43 is horizontally slidably arranged on the extrusion transmission mechanism 23, and the end of the second piston rod 42 away from the U-shaped oil pressure tube 39 is fixedly connected to the second sliding seat 43.

[0048] When the transmission device is working, the second piston rod 42 is driven to move by the extrusion transmission mechanism 23, and then the first piston rod 41 is pushed outward by oil pressure. When the first piston rod 41 moves, it drives the telescopic connecting plate 37 fixedly connected thereto to move synchronously, thereby realizing the synchronous transmission function. The second sliding seat 43 can synchronously change its horizontal displacement in the extrusion transmission mechanism 23 according to the position of the horizontal sliding seat 33 in the transverse clamping mechanism 19, so as to realize the transmission effect.

[0049] The extrusion transmission mechanism 23 includes an extrusion transmission plate 44, a telescopic connecting rod 45 and a second mounting frame 46. An extrusion transmission plate 44 is provided on one side of the fixed mounting plate 17 and the lifting mounting plate 18 away from the center of the turntable 1. The length direction of the extrusion transmission plate 44 is consistent with the length direction of the fixed mounting plate 17. The extrusion transmission plate 44 is connected to the fixed mounting plate 17 and the lifting mounting plate 18 through a telescopic connecting rod 45. The second mounting frame 46 is horizontally arranged, and the length direction of the second mounting frame 46 is perpendicular to the length direction of the fixed mounting plate 17. One end of the second mounting frame 46 is fixedly connected to the extrusion transmission plate 44, and the other end of the second mounting frame 46 is fixedly connected to the transmission contact plate 34. An extrusion column 48 for extruding the extrusion transmission plate 44 is provided on the outer side of the turntable 1.

[0050] A loading station and an unloading station are provided on the outer side of the turntable 1. A displaceable extrusion column 48 is provided at the loading station and the unloading station. In cooperation with the loading and unloading manipulator, the locking state of the clamping claw 22 on the outer wall of the carrier frame 4 can be released, and the loading and unloading operations can be performed at the same time. The movement of the extrusion column 48 drives the extrusion transmission plate 44 to move toward the side close to the fixed mounting plate 17 and the lifting mounting plate 18. At this time, the telescopic connecting rod 45 is compressed, and the transmission contact plate 34 is driven to move synchronously through the second mounting frame 46 fixedly connected to the extrusion transmission plate 44, thereby realizing the driving function of the extrusion transmission mechanism 23 on the horizontal clamping mechanism 19, and the second piston rod 42 is driven to move by the second sliding seat 43 slidably arranged on the extrusion transmission plate 44, thereby realizing the transmission process of the extrusion transmission mechanism 23 on the longitudinal clamping mechanism 21. It is worth mentioning that the reset process of the extrusion transmission plate 44 is that when the extrusion column 48 does not squeeze the extrusion transmission plate 44, the elastic force generated by the first spring 35 and the second spring 38 respectively drives the horizontal sliding seat 33 and the telescopic connecting plate 37 to reset, thereby driving the extrusion transmission plate 44 to realize the reset function.

[0051] The clamping assembly 6 also includes a height adjustment mechanism 49 and an adjustment drive mechanism 51. The adjustment drive mechanism 51 is arranged on the outer side of the turntable 1. Each lifting mounting plate 18 is equipped with a height adjustment mechanism 49. The height adjustment mechanism 49 includes a threaded shaft 52, a threaded seat 53, an extrusion plate 54, a friction disc 55 and a third spring 56. The threaded seat 53 is fixedly mounted on the lifting mounting plate 18 (such as Figure 8 As shown in the figure, the threaded shaft 52 is vertically arranged on the supporting frame 4, the threaded seat 53 is threadedly matched with the threaded shaft 52, the extrusion plate 54 is fixedly installed on the top of the threaded shaft 52, the friction disc 55 is arranged between the extrusion plate 54 and the top of the supporting frame 4, the friction disc 55 is elastically installed on the supporting frame 4 through the third spring 56, the adjustment drive mechanism 51 includes a lifting mounting frame 57, a first adjustment shaft 58 and a contact extrusion disc 59, the lifting mounting frame 57 that can be lifted and lowered is arranged above the threaded shaft 52, the first adjustment shaft 58 is rotatably installed on the threaded shaft 52, the contact extrusion disc 59 matched with the friction disc 55 is fixedly installed on the lifting mounting frame 57, and the threaded shaft 52 and the first adjustment shaft 58 are snap-fitted.

[0052] By setting the height adjustment mechanism 49 and the adjustment drive mechanism 51, the device can adapt to cylinder sleeves of different lengths, thereby improving the detection application range of the device. Each mounting plate 2 is provided with a height adjustment mechanism 49, and the adjustment drive mechanism 51 is installed at the adjustment station of the turntable 1. When the height needs to be adjusted, the height adjustment mechanism 49 at the corresponding position is driven by the adjustment drive mechanism 51 to work, thereby driving the lifting mounting plate 18 at the corresponding position to move up and down, thereby realizing the height adjustment function.

[0053] The lifting mounting frame 57 drives the first adjusting shaft 58 and the abutting and squeezing disk 59 to lift and lower. The abutting and squeezing disk 59 abuts against the friction disk 55, compressing the third spring 56 to make the friction disk 55 descend to release the friction connection between the friction disk 55 and the squeezing plate 54. At this time, the first adjusting shaft 58 and the threaded shaft 52 are connected together by snap-fitting. When the first adjusting shaft 58 rotates, it drives the threaded shaft 52 to rotate synchronously, drives the threaded seat 53 threadedly matched with the threaded shaft 52 to lift and lower, and then drives the lifting mounting plate 18 fixedly connected to the threaded seat 53 to lift and lower synchronously, thereby realizing the lifting and adjusting function of the lifting mounting plate 18.

[0054] The rotating transmission mechanism 5 includes a supporting disc 61, a fixed seat 62, a first rotating shaft 63, a driving gear 64 and a ring gear 65. The fixed seat 62 is fixedly mounted on the mounting plate 2. The supporting disc 61 is axially connected to the fixed seat 62. The first rotating shaft 63 is horizontally rotatably mounted on the fixed seat 62. The axial direction of the first rotating shaft 63 is consistent with the radial direction of the turntable 1. The driving gear 64 is fixedly mounted on the first rotating shaft 63. The ring gear 65 is fixedly mounted on the lower half of the supporting disc 61. The ring gear 65 is meshed with the driving gear 64. The rotating driving assembly 8 includes a horizontally displaceable ejector mounting frame 66 and a rotatable second adjusting shaft 67. The second adjusting shaft 67 can be snap-fitted with the first rotating shaft 63.

[0055] The clamping assembly 6 is installed at the first detection station. When the first detection system is operating, the rotary drive assembly 8 is driven to deflect the rotary transmission mechanism 5 at the corresponding position, thereby driving the cylinder sleeve clamped thereon to rotate synchronously, thereby realizing the detection function. The ejection mounting frame 66 drives the second adjusting shaft 67 to be inserted into the first rotating shaft 63. The second adjusting shaft 67 and the first rotating shaft 63 are clamped. When the second adjusting shaft 67 rotates, it drives the first rotating shaft 63 to rotate synchronously. The first rotating shaft 63 drives the driving gear 64 fixedly connected thereto to rotate, and drives the ring gear 65 meshing with the driving gear 64 to rotate, thereby driving the bearing disc 61 fixedly connected to the ring gear 65 to move synchronously, thereby driving the cylinder sleeve above the bearing disc 61 to rotate synchronously, thereby realizing the avoidance function.

[0056] A visual inspection camera 68 is also provided on the outside of the turntable 1 .

[0057] The visual inspection camera 68 is set at the scanning station. After the cylinder liner is clamped and positioned by the clamping assembly 6, the cylinder liner is photographed by a high-precision industrial camera, and the position, shape and key feature points of the cylinder liner are determined by the image recognition algorithm. The outer circle contour and port position of the cylinder liner can be identified as the positioning reference. The image recognition software can distinguish the cylinder liner from the surrounding environment and accurately calculate the coordinates and posture of the cylinder liner in space.

[0058] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A cylinder liner flaw detection and positioning device, characterized in that: The invention comprises a turntable (1) and a plurality of mounting plates (2) mounted thereon, each mounting plate (2) being provided with a rotary transmission mechanism (5), a bearing frame (4) and a bottom bearing seat (3) for supporting the bottom of a cylinder liner being provided at the output end of the rotary transmission mechanism (5), a clamping assembly (6) for clamping the two ends of the cylinder liner being installed on the bearing frame (4), an ultrasonic detection assembly (7) and a rotary drive assembly (8) being provided on the outer side of the mounting plate (2), the ultrasonic detection assembly (7) comprising a first detection system and a second detection system, the first detection system being provided with a cylinder wall ultrasonic detection head (9) for detecting flaws on the cylinder wall, the second detection system being provided with a cylinder mouth ultrasonic detection head (11) for detecting flaws on the cylinder mouth, the cylinder wall ultrasonic detection head (9) and the cylinder mouth ultrasonic detection head (11) both being able to be lifted and retracted horizontally and being arranged on the side of the turntable (1), the second detection system further comprising a flipping mechanism (15), the flipping mechanism (15) being arranged above the turntable (1) and being in transmission connection with the cylinder mouth ultrasonic detection head (11), the first detection system and the second detection system both comprising a marking positioning machine The marking and positioning mechanism (16) is located beside the cylinder wall ultrasonic detection head (9) or the cylinder mouth ultrasonic detection head (11), the rotary drive assembly (8) can be connected to the rotary transmission mechanism (5) in a transmission manner, and the clamping assembly (6) includes a fixed mounting plate (17) fixed on the carrier frame (4) and a lifting mounting plate (18) that can be lifted and lowered on the carrier frame (4), the length direction of the fixed mounting plate (17) is set to be horizontal, and the fixed mounting plate (17) and the lifting mounting plate (18) are both provided with a horizontal clamping mechanism (19). ), a longitudinal clamping mechanism (21), an outer wall clamping claw (22) and an extrusion transmission mechanism (23); two groups of transverse clamping mechanisms (19) are symmetrically arranged on the fixed installation plate (17) and the lifting installation plate (18) along the vertical center plane; each group of transverse clamping mechanisms (19) is provided with a group of longitudinal clamping mechanisms (21); each group of longitudinal clamping mechanisms (21) is provided with two outer wall clamping claws (22); and the transverse clamping mechanisms (19) and the longitudinal clamping mechanisms (21) are both transmission-connected to the extrusion transmission mechanism (23).

2. A cylinder liner flaw detection and positioning device according to claim 1, characterized in that: The first detection system and the second detection system also both include a first transverse movement mechanism (12), a first lifting mechanism (13) and an elastic resistance device (14) installed on the side of the turntable (1). In the first detection system, the first transverse movement mechanism (12) is arranged at the output end of the first lifting mechanism (13), the cylinder wall ultrasonic detection head (9) is arranged at the output end of the first transverse movement mechanism (12) through the elastic resistance device (14), the mark positioning mechanism (16) is arranged at the output end of the first transverse movement mechanism (12), the cylinder wall ultrasonic detection head (9) is arranged horizontally, and the first detection system (16) is arranged at the output end of the first transverse movement mechanism (12). The detection system is further provided with a horizontal displacement mechanism, and the first lifting mechanism (13) is arranged on the output end of the horizontal displacement mechanism. In the second detection system, the first lifting mechanism (13) is arranged on the output end of the first transverse displacement mechanism (12), and a rotatable turntable is arranged on the output end of the first lifting mechanism (13), and the cylinder mouth ultrasonic detection head (11) is arranged on the turntable through an elastic resistance device (14), and the flip mechanism (15) and the mark positioning mechanism (16) are both arranged on the turntable, and the mark positioning mechanism (16) is provided with a mark head (32) that can be extended horizontally or vertically.

3. A cylinder liner flaw detection and positioning device according to claim 2, characterized in that: The elastic resistance device (14) comprises a detection mounting plate (24), a first telescopic rod (25), a fourth spring (26) and a resistance mounting frame (27). In the first detection system, the detection mounting plate (24) is fixedly mounted on the output end of the first transverse movement mechanism (12), the two ends of the first telescopic rod (25) are respectively fixedly connected to the resistance mounting frame (27) and the detection mounting plate (24), the fourth spring (26) is sleeved on the first telescopic rod (25), and the cylinder wall ultrasonic detection head (9) is fixedly mounted on the resistance mounting frame (27). In the second detection system, the detection mounting plate (24) is fixedly mounted on the output end of the first lifting mechanism (13), the first telescopic rod (25) is located between the abutment mounting frame (27) and the detection mounting plate (24), one end of the first telescopic rod (25) is fixedly connected to the abutment mounting frame (27), the other end of the first telescopic rod (25) is hinged to the detection mounting plate (24), the cylinder mouth ultrasonic detection head (11) is fixedly mounted on the abutment mounting frame (27), and the flip mechanism (15) is drivingly connected to the abutment mounting frame (27).

4. A cylinder liner flaw detection and positioning device according to claim 3, characterized in that: The flip mechanism (15) comprises a first linear drive (28), a sliding collar (29) and a hinged rod (31); the first linear drive (28) is fixedly mounted on the detection mounting plate (24); the sliding collar (29) is vertically slidably mounted on the detection mounting plate (24); one end of the hinged rod (31) is hinged to the sliding collar (29); and the other end of the hinged rod (31) is hinged to the abutment mounting frame (27).

5. The cylinder liner flaw detection and positioning device according to claim 1, characterized in that: The transverse clamping mechanism (19) comprises a horizontal sliding seat (33), a transmission contact plate (34) and a first spring (35); a first horizontal groove is transversely provided on the fixed mounting plate (17) and the lifting mounting plate (18); the horizontal sliding seat (33) is slidably arranged on the fixed mounting plate (17) and the lifting mounting plate (18) through the first horizontal groove; the first spring (35) is horizontally arranged; one end of the first spring (35) is fixedly connected to the bottom of the first horizontal groove; the other end of the first spring (35) is fixedly connected to the bottom of the first horizontal groove; The side wall of the horizontal sliding seat (33) is fixedly connected, a transmission groove for transmission connection of a transmission contact plate (34) is provided in the middle of the horizontal sliding seat (33), the transmission contact plate (34) is transmission connected to the extrusion transmission mechanism (23), a transmission chamfer is provided at one end of the transmission contact plate (34) close to the horizontal sliding seat (33), the transmission chamfer is in contact with one end of the transmission groove in the middle of the horizontal sliding seat (33) close to the first spring (35), and the inclination direction of the transmission chamfer is from the end away from the horizontal sliding seat (33) to the end of the horizontal sliding seat (33). When approaching the horizontal sliding seat (33), the longitudinal clamping mechanism (21) deviates toward the side close to the bottom bearing seat (3). The longitudinal clamping mechanism (21) comprises a telescopic connecting plate (37), a second spring (38) and a transmission device. The length direction of the telescopic connecting plate (37) is perpendicular to the length direction of the fixed mounting plate (17). One end of the telescopic connecting plate (37) is fixedly connected to the horizontal sliding seat (33). One outer wall clamping claw (22) is fixedly connected to the horizontal sliding seat (33). The other outer wall clamping claw (22) is fixedly mounted on the end of the telescopic connecting plate (37) away from the horizontal sliding seat (33). The transmission device is mounted on the horizontal sliding seat (33). The transmission device is transmission-connected to the end of the telescopic connecting plate (37) away from the horizontal sliding seat (33). The extrusion transmission mechanism (23) is transmission-connected to the transmission device. One end of the second spring (38) is fixedly connected to the end of the telescopic connecting plate (37) away from the horizontal sliding seat (33). The other end of the second spring (38) is fixedly connected to the horizontal sliding seat (33).

6. A cylinder liner flaw detection and positioning device according to claim 5, characterized in that: The transmission device comprises a U-shaped oil pressure tube (39), a first piston rod (41), a second piston rod (42) and a second sliding seat (43). The U-shaped oil pressure tube (39) is fixedly mounted on the horizontal sliding seat (33). The U-shaped oil pressure tube (39) is composed of a first straight section, a U-shaped section and a second straight section and is hollow. Liquid is arranged inside the U-shaped oil pressure tube (39). The first piston rod (41) is slidably arranged in the first straight section. The second piston rod (42) is arranged in the second straight section. One end of the first piston rod (41) away from the U-shaped oil pressure tube (39) is fixedly connected to one end of the telescopic connecting plate (37) away from the horizontal sliding seat (33). The second sliding seat (43) is horizontally slidably arranged on the extrusion transmission mechanism (23). One end of the second piston rod (42) away from the U-shaped oil pressure tube (39) is fixedly connected to the second sliding seat (43).

7. A cylinder liner flaw detection and positioning device according to claim 6, characterized in that: The extrusion transmission mechanism (23) comprises an extrusion transmission plate (44), a telescopic connecting rod (45) and a second mounting frame (46). An extrusion transmission plate (44) is provided on one side of the fixed mounting plate (17) and the lifting mounting plate (18) away from the center of the turntable (1). The length direction of the extrusion transmission plate (44) is consistent with the length direction of the fixed mounting plate (17). The extrusion transmission plate (44) is connected to the fixed mounting plate (17) and the lifting mounting plate (18) via the telescopic connecting rod (45). The second mounting frame (46) is horizontally arranged. The length direction of the second mounting frame (46) is perpendicular to the length direction of the fixed mounting plate (17). One end of the second mounting frame (46) is fixedly connected to the extrusion transmission plate (44), and the other end of the second mounting frame (46) is fixedly connected to the transmission contact plate (34). An extrusion column (48) for extruding the extrusion transmission plate (44) is provided on the outer side of the turntable (1).

8. The cylinder liner flaw detection and positioning device according to claim 1, characterized in that: The clamping assembly (6) further comprises a height adjustment mechanism (49) and an adjustment drive mechanism (51). The adjustment drive mechanism (51) is arranged on the outer side of the turntable (1). Each lifting mounting plate (18) is mounted with a height adjustment mechanism (49). The height adjustment mechanism (49) comprises a threaded shaft (52), a threaded seat (53), an extrusion plate (54), a friction disc (55) and a third spring (56). The threaded seat (53) is fixedly mounted on the lifting mounting plate (18). The threaded shaft (52) is vertically arranged on the supporting frame (4). The threaded seat (53) is threadably matched with the threaded shaft (52). The extrusion plate (54) is fixedly mounted on the top of the threaded shaft (52). The friction disc (55) is arranged between the extrusion plate (54) and the top of the carrier (4); the friction disc (55) is elastically mounted on the carrier (4) via a third spring (56); the adjustment drive mechanism (51) comprises a lifting mounting frame (57), a first adjustment shaft (58) and a contact extrusion disc (59); the lifting mounting frame (57) is arranged above the threaded shaft (52) and the first adjustment shaft (58) is rotatably mounted on the threaded shaft (52); the contact extrusion disc (59) matched with the friction disc (55) is fixedly mounted on the lifting mounting frame (57); the threaded shaft (52) and the first adjustment shaft (58) are engaged with each other.

9. The cylinder liner flaw detection and positioning device according to claim 1, characterized in that: The rotary transmission mechanism (5) comprises a bearing disc (61), a fixing seat (62), a first rotating shaft (63), a driving gear (64) and a ring gear (65); the fixing seat (62) is fixedly mounted on the mounting plate (2); the bearing disc (61) and the fixing seat (62) are axially connected; the first rotating shaft (63) is horizontally rotatably mounted on the fixing seat (62); the axial direction of the first rotating shaft (63) is consistent with the radial length direction of the turntable (1); the driving gear (64) is fixedly mounted on the first rotating shaft (63); the ring gear (65) is fixedly mounted on the lower half of the bearing disc (61); the ring gear (65) is meshed with the driving gear (64); and the rotary drive assembly (8) comprises a horizontally displaceable ejector mounting frame (66) and a rotatable second adjustment rotating shaft (67); the second adjustment rotating shaft (67) and the first rotating shaft (63) are capable of snap-fitting.

10. The cylinder liner flaw detection and positioning device according to claim 1, characterized in that: A visual inspection camera (68) is also provided on the outside of the turntable (1).

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