A crane beam fatigue cracking detection device

Abstract

The present invention discloses a crane beam fatigue crack detection device, which relates to the crane beam fatigue crack detection technical field, and includes a vehicle beam main body and a connecting frame plate, wherein the vehicle beam main body is located on a side where two connecting frame plates are close to each other. This crane beam fatigue crack detection device, when detecting the surface of the crane beam, drives the moving wheel to roll on the vehicle beam main body surface through a driving motor to realize mobile shooting detection, and utilizes the cooperation of the bevel gear 2 and the slip ring to make the camera component surround the vehicle beam main body for shooting during movement, comprehensively detect the crane beam, and shorten the detection cycle. At the same time, when the connecting frame plate moves, the left and right auxiliary side wheels ensure the stability of the equipment, and the rejection plate pre-scrapes the stubborn dust on the web plate, and blows it off through the cooperation of the pull rope and the fixed column, so as to reduce the interference of dust on camera recognition, so that defects can be captured more clearly and accurately. This method shoots the crane beam in all directions and at multiple angles, ensuring the accuracy and reliability of the detection equipment.

Description

Technical Field

[0001] The invention relates to the technical field of crane beam fatigue crack detection, in particular to a crane beam fatigue crack detection device. Background Art

[0002] Cranes are widely used in various industrial plants, and their steel structure crane beams have fatigue life problems, especially in the sections where heavy or super heavy duty cranes are operated, the fatigue life problem of crane beams is more prominent. The early manifestation of crane beam fatigue life problems is fatigue micro cracks in the weld or parent material, the mid-term manifestation is the continuous expansion of cracks along the weld and parent material, and the late manifestation is the tearing of the parent material, and the crane beam breaks and collapses, which is a serious structural safety accident. In order to ensure structural safety, it is required to conduct regular inspections of the parts with weak fatigue strength of the crane beam, and after fatigue cracks are found, repairs should be carried out according to the on-site conditions or the crack development trend should be tracked and detected.

[0003] For example, Chinese patent CN219572956U discloses a crack detection device for a rail-type crane beam. It can be seen that the device can move on the surface of the beam by setting a wheel seat and a guide wheel, driving a camera to move on the surface of the beam to monitor the beam.

[0004] Based on the search of existing technologies, it can be known that due to the small size of fatigue cracks, long-distance observation is simply not possible to detect them. Therefore, usually only scaffolding, hanging baskets or aerial platforms can be used for close-range detection, or movable cameras can be used to detect crane beams. However, the mobile camera detection method is relatively simple. Since the crane beam has upper and lower flange surfaces and left and right web surfaces (concave surfaces), it is impossible to quickly perform a comprehensive inspection of the crane beam. Moreover, since the web is located between the upper and lower flanges and presents a concave shape, this structural feature makes it easier for dust to deposit and accumulate on the web surface, resulting in optical technology (such as camera recognition recording) It is difficult to accurately capture defects such as cracks during detection, which can easily lead to the detected data being inconsistent with the actual data, thereby affecting the accuracy of the detection. Summary of the invention

[0005] The object of the present invention is to provide a crane beam fatigue cracking detection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crane beam fatigue cracking detection device, comprising a beam body and a connecting frame plate, wherein the beam body is located on a side where two connecting frame plates are close to each other, and a support plate is symmetrically fixedly connected to a side wall where two connecting frame plates are far away from each other, and a slide groove is provided on one side wall of the support plate;

[0007] The surface of the connecting frame plate is provided with a rotating detection component, so that when the crane beam is inspected, it can be photographed and inspected around the main body of the beam, so as to photograph the crane beam in all directions and at multiple angles;

[0008] A cleaning and dust blowing component is provided on one side wall of the connecting frame plate, so that when the crane beam is inspected, the dust at the web position can be centrally blown away to reduce the interference of dust on the camera recognition technology.

[0009] Preferably, the rotation detection component includes a through groove, and the through groove is opened in the middle position of the two connecting frame plates, the inner wall of the through groove is rotatably connected to a rotating rod, and the outer wall of the rotating rod is symmetrically fixedly connected to a moving wheel, the outer wall of one of the rotating rods is fixedly connected to a bevel gear 1, wherein the same side wall of the two support plates is fixedly connected to a mounting plate, and the other side wall of the mounting plate is fixedly installed with a driving motor, one end of the output shaft of the driving motor passes through the inside of the mounting plate and is fixedly connected to a bevel gear 2, and one side of the bevel gear 2 is meshed and matched with one side of the bevel gear 1, the inner wall of the slide groove is slidably connected with a slip ring, and the inner wall of the slip ring is provided with a tooth groove corresponding to the bevel gear 2, and one side of the bevel gear 2 is meshed and matched with the tooth groove.

[0010] Preferably, the outer wall of the slip ring is fixedly connected to a limiting ring, the inner wall of the sliding groove is provided with a limiting groove corresponding to the limiting ring, and the outer wall of the limiting ring slides in contact with the inner wall of the limiting groove.

[0011] Preferably, a mounting block is fixedly connected to one end surface of the slip ring, and the upper and lower surfaces of the mounting block are slidably matched with the inner wall of the slide groove, and a camera component is fixedly installed inside the mounting block.

[0012] Preferably, the cleaning and dust blowing component includes a connecting rod 1, one end of the four connecting rods 1 being symmetrically and equidistantly fixedly connected to a side wall close to the two connecting frame plates, and the other end of the connecting rod 1 is rotatably connected to an auxiliary side wheel, and a side outer wall of the auxiliary side wheel rolls in fit with the side wall of the vehicle beam body, and the side wall of the two connecting frame plates away from the camera component are symmetrically fixedly connected with a fixing plate, and the fixing plate is fixedly connected with a connecting rod 2 facing a side wall of the vehicle beam body, the other end of the connecting rod 2 is fixedly connected with a rejection plate, and the outer wall of the rejection plate is in fit with the recessed surface of the side wall of the vehicle beam body, the fixing plate is fixedly connected with a connecting rod 3 facing a side wall of the vehicle beam body, and the other end of the connecting rod 3 is fixedly connected with an air cylinder, one end of the air cylinder faces the rejection plate, and one end of the air cylinder is truncated.

[0013] Preferably, a piston is slidably connected to the inner wall of the gas cylinder, and a push rod is fixedly connected to one end face of the piston, the other end of the push rod extends through the interior of the gas cylinder to the outside of the gas cylinder, and the extended end of the push rod is fixedly connected to a push handle.

[0014] Preferably, one end surface of the auxiliary side wheel is fixedly connected to a fixing column at a biased position, and a pull rope is wrapped around the outer wall of the fixing column, and the other end of the pull rope is fixedly connected to an end surface of the push handle away from the push rod.

[0015] Preferably, a tension spring is fitted on the outer wall of the push rod, one end of the tension spring is fixedly connected to one end of the air cylinder, and the other end of the tension spring is fixedly connected to an end surface of the push handle facing the push rod.

[0016] Preferably, the push rod forms a telescopic structure with the push handle through a tension spring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When inspecting the surface of the crane beam, the driving motor can be used to drive the moving wheel to roll on the surface of the beam body for mobile shooting inspection. At the same time, the cooperation between the bevel gear 2 and the slip ring can be used to drive the camera component to surround the beam body for shooting inspection during the movement, so as to quickly conduct a comprehensive inspection of the crane beam without moving and adjusting the inspection position multiple times, thereby greatly shortening the inspection cycle and being able to shoot the crane beam in all directions and at multiple angles, which is conducive to ensuring the accuracy and reliability of the inspection equipment.

[0019] 2. When inspecting the surface of the crane beam, when the connecting frame plate is moved, the auxiliary side wheels on the left and right sides can be used to ensure the stability of the equipment during movement. At the same time, the setting of the rejection plate can pre-scrape and concentrate the stubborn dust on the web position, and the coordination of the pull rope and the fixed column can blow away the dust concentrated on the rejection plate, thereby reducing the interference of dust on the camera recognition technology, so that defects such as cracks can be captured more clearly and accurately, which is conducive to ensuring the accuracy and reliability of the detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall rear view structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the first part of the rotation detection component of the present invention;

[0023] Figure 4is a structural schematic diagram of the second part of the rotation detection component of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the first part of the cleaning and dust blowing component of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the second part of the cleaning and dust blowing component of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] For example, see Figure 1-6 The present invention provides a crane beam fatigue cracking detection device, comprising a beam body 1 and a connecting frame plate 2, wherein the beam body 1 is located on a side where two connecting frame plates 2 are close to each other, and a support plate 3 is symmetrically fixedly connected to a side wall where the two connecting frame plates 2 are far away from each other, and a slide groove 4 is provided on one side wall of the support plate 3.

[0028] A rotation detection component 5 is provided on the surface of the connecting frame plate 2 .

[0029] Furthermore, the rotation detection component 5 includes a through slot 501, and the through slot 501 is opened in the middle position of the two connecting frame plates 2, the inner wall of the through slot 501 is rotatably connected to the rotating rod 502, and the outer wall of the rotating rod 502 is symmetrically fixedly connected to the moving wheel 503, the outer wall of one of the rotating rods 502 is fixedly connected to the bevel gear 1 504, wherein the same side wall of the two support plates 3 is fixedly connected to the mounting plate 505, and the other side wall of the mounting plate 505 is fixedly installed with a driving motor 506, one end of the driving motor 506 The output shaft passes through the inside of the mounting plate 505 and is fixedly connected to the bevel gear 2 507, and one side of the bevel gear 2 507 is meshed and matched with one side of the bevel gear 1 504, the inner wall of the slide groove 4 is slidably connected with a slip ring 508, and the inner wall of the slip ring 508 is provided with a tooth groove 509 corresponding to the bevel gear 2 507, and one side of the bevel gear 2 507 is meshed and matched with the tooth groove 509.

[0030] In this embodiment, when the surface of the crane beam is inspected, the device is installed on the vehicle beam body 1 through the upper and lower pairs of moving wheels 503, and then the output shaft at one end of the driving motor 506 passes through the interior of the mounting plate 505 and is fixedly connected to the bevel gear 2 507, and one side of the bevel gear 2 507 is meshed and matched with one side of the bevel gear 1 504, and the outer wall of the rotating rod 502 is symmetrically fixedly connected to the moving wheels 503, and at the same time, the outer wall of one of the rotating rods 502 is fixedly connected to the bevel gear 1 504, so that one of the rotating rods 502 can be driven to rotate by the driving motor 506, and then one of the pairs of moving wheels 503 can be driven to roll, so that the device moves on the surface of the vehicle beam body 1.

[0031] Then, a slip ring 508 is slidably connected with the inner wall of the slide groove 4, and a tooth groove 509 is provided on the inner wall of the slip ring 508 corresponding to the bevel gear 2 507, and one side of the bevel gear 2 507 is meshed with the tooth groove 509, so that during the movement of the device, the slip ring 508 can be rotated through the cooperation between the bevel gear 2 507 and the tooth groove 509, and then a limiting ring 510 is fixedly connected with the outer wall of the slip ring 508, and a limiting groove 511 is provided on the inner wall of the slide groove 4 corresponding to the limiting ring 510, and the outer wall of the limiting ring 510 is slidably fitted with the inner wall of the limiting groove 511, so that the stability of the slip ring 508 during rotation can be ensured through the cooperation between the limiting ring 510 and the limiting groove 511.

[0032] Then, a mounting block 512 is fixedly connected through one end face of the slip ring 508, and the upper and lower surfaces of the mounting block 512 are slidably matched with the inner wall of the slide groove 4, and a camera component 513 is fixedly installed inside the mounting block 512, so that during the rotation of the slip ring 508, the camera component 513 can be synchronously driven to surround the vehicle beam body 1 for shooting and detection, so as to quickly perform a comprehensive inspection of the crane beam without moving and adjusting the inspection position multiple times, thereby greatly shortening the inspection cycle and being able to shoot the crane beam in all directions and at multiple angles.

[0033] As described above, when inspecting the surface of the crane beam, the driving motor 506 can be used to drive the moving wheel 503 to roll on the surface of the beam body 1 to perform mobile shooting inspection. At the same time, the cooperation between the bevel gear 2 507 and the slip ring 508 can be used to drive the camera component 513 to surround the beam body 1 for shooting inspection during the movement, so as to quickly perform a comprehensive inspection of the crane beam without moving and adjusting the inspection position multiple times, thereby greatly shortening the inspection cycle and being able to photograph the crane beam in all directions and at multiple angles, which is beneficial to ensuring the accuracy and reliability of the inspection equipment.

[0034] Embodiment 2: Based on the above embodiment, a dust cleaning and blowing component 6 is provided on one side wall of the connecting frame plate 2 .

[0035] Furthermore, the dust cleaning and blowing component 6 includes a connecting rod 1 601, one end of the four connecting rods 1 601 is symmetrically fixedly connected to a side wall of two connecting frame plates 2 that are close to each other at an equal distance, and the other end of the connecting rod 1 601 is rotatably connected to an auxiliary side wheel 602, and one side outer wall of the auxiliary side wheel 602 is fitted and rolled with the side wall of the vehicle beam body 1, and one side wall of the two connecting frame plates 2 away from the camera component 513 is symmetrically fixedly connected to a fixing plate 603, and the fixing plate 603 is fixedly connected to a connecting rod 2 604 toward a side wall of the vehicle beam body 1, and the other end of the connecting rod 2 604 is fixedly connected to a rejection plate 605, and the outer wall of the rejection plate 605 is fitted and matched with the concave surface of the side wall of the vehicle beam body 1, and the fixing plate 603 is fixedly connected to a connecting rod 3 606 toward a side wall of the vehicle beam body 1, and the other end of the connecting rod 3 606 is fixedly connected to an air cylinder 607, one end of the air cylinder 607 faces the rejection plate 605, and one end of the air cylinder 607 is truncated.

[0036] In this embodiment, one end of four connecting rods 601 is symmetrically and evenly fixedly connected to a side wall close to two connecting frame plates 2, and the other end of the connecting rod 601 is rotatably connected to an auxiliary side wheel 602, and one side outer wall of the auxiliary side wheel 602 rolls in contact with the side wall of the vehicle beam body 1 to ensure the stability of the device when moving and avoid shooting detection errors caused by shaking or deflection.

[0037] Then, a fixing plate 603 is symmetrically fixedly connected to one side wall away from the camera component 513 through two connecting frame plates 2, and a connecting rod 2 604 is fixedly connected to the fixing plate 603 on one side wall facing the vehicle beam main body 1, and a rejecting plate 605 is fixedly connected to the other end of the connecting rod 2 604, and at the same time, the outer wall of the rejecting plate 605 is fitted and matched with the concave surface of the side wall of the vehicle beam main body 1, so that the rejecting plates 605 located on both sides of the vehicle beam main body 1 can be driven by the movement of this equipment to scrape off the stubborn dust on the web position in advance, and concentrate it on the surface of the rejecting plate 605, so as to facilitate the subsequent blowing away of the scraped dust.

[0038] Then, a piston 608 is slidably connected to the inner wall of the gas cylinder 607, and one end face of the piston 608 is fixedly connected to a push rod 609, and the other end of the push rod 609 passes through the interior of the gas cylinder 607 and extends to the outside of the gas cylinder 607, and at the same time, the extended end of the push rod 609 is fixedly connected to a push handle 610, and one end face of the auxiliary side wheel 602 is fixedly connected to a fixed column 612 at a biased position, and a pull rope 611 is wrapped around the outer wall of the fixed column 612, and at the same time, the other end of the pull rope 611 is fixedly connected to an end face of the push handle 610 away from the push rod 609, and a tension spring 613 is fitted on the outer wall of the push rod 609, and one end of the tension spring 613 is fixedly connected to one end of the gas cylinder 607, and at the same time, the other end of the tension spring 613 is fixedly connected to an end face of the push handle 610 facing the push rod 609, thereby During the rotation process, the fixed column 612 can be driven to move eccentrically around the auxiliary side wheel 602 to pull the pull rope 611, so that the piston 608 moves in the air cylinder 607 to draw air, and at the same time, the piston 608 can be driven back to the initial position by the rebound force of the tension spring 613, and a connecting rod three 606 is fixedly connected to one side wall of the vehicle beam body 1 through the fixed plate 603, and the other end of the connecting rod three 606 is fixedly connected to the air cylinder 607, and one end of the air cylinder 607 is facing the rejection plate 605, and one end of the air cylinder 607 is in a truncated cone shape, so that air can be blown on the surface of the rejection plate 605 to blow away the dust concentrated on the rejection plate 605, thereby reducing the interference of dust on subsequent camera recognition technology, so that defects such as cracks can be captured more clearly and accurately.

[0039] As described above, when inspecting the surface of the crane beam, when the connecting frame plate 2 moves, the auxiliary side wheels 602 on the left and right sides can ensure the stability of the equipment during movement, and at the same time, the rejection plate 605 can be set to scrape and concentrate the stubborn dust on the web position in advance, and the pull rope 611 and the fixed column 612 can be used to blow away the dust concentrated on the rejection plate 605, thereby reducing the interference of dust on the camera recognition technology, so that defects such as cracks can be captured more clearly and accurately, which is beneficial to ensure the accuracy and reliability of the detection equipment.

[0040] Working principle: First, when inspecting the surface of the crane beam, the device is installed on the vehicle beam body 1 through the upper and lower pairs of moving wheels 503, and then one of the rotating rods 502 is driven to rotate by the driving motor 506, which can then drive one of the pairs of moving wheels 503 to roll, so that the device moves on the surface of the vehicle beam body 1;

[0041] Then, the slip ring 508 is connected by slidingly fitting with the inner wall of the slide groove 4, and the inner wall of the slip ring 508 is provided with a tooth groove 509 corresponding to the bevel gear 2 507, and one side of the bevel gear 2 507 is meshed and matched with the tooth groove 509, so that the slip ring 508 can rotate through the cooperation of the bevel gear 2 507 and the tooth groove 509 during the movement of the device, and then the limit ring 510 is fixedly connected through the outer wall of the slip ring 508, and the inner wall of the slide groove 4 is provided with a limit groove 511 corresponding to the limit ring 510, and the outer wall of the limit ring 510 is fitted and slid with the inner wall of the limit groove 511, so that the stability of the slip ring 508 during rotation can be ensured through the cooperation of the limit ring 510 and the limit groove 511;

[0042] Then, a mounting block 512 is fixedly connected through one end face of the slip ring 508, and the upper and lower surfaces of the mounting block 512 are slidably matched with the inner wall of the slide groove 4, and a camera component 513 is fixedly installed inside the mounting block 512, so that during the rotation of the slip ring 508, the camera component 513 can be synchronously driven to surround the vehicle beam body 1 for shooting and testing, so as to quickly perform a comprehensive inspection of the crane beam without moving and adjusting the inspection position multiple times, thereby greatly shortening the inspection cycle, and being able to shoot the crane beam in all directions and at multiple angles;

[0043] Then, one end of four connecting rods 601 is symmetrically and fixedly connected to the side wall of the two connecting frame plates 2 at equal distances, and the other end of the connecting rod 601 is rotatably connected to the auxiliary side wheel 602, and the outer wall of one side of the auxiliary side wheel 602 is in contact with the side wall of the vehicle beam body 1 and rolls, so as to ensure the stability of the device when moving and avoid shooting detection errors caused by shaking or deflection;

[0044] Then, a fixing plate 603 is symmetrically fixedly connected to one side wall away from the camera component 513 through two connecting frame plates 2, and a connecting rod 2 604 is fixedly connected to the fixing plate 603 on one side wall facing the vehicle beam body 1, and a rejecting plate 605 is fixedly connected to the other end of the connecting rod 2 604, and at the same time, the outer wall of the rejecting plate 605 is matched with the concave surface of the side wall of the vehicle beam body 1, so that the rejecting plates 605 located on both sides of the vehicle beam body 1 can be driven by the movement of the device to scrape off the stubborn dust on the web position in advance, and concentrate it on the surface of the rejecting plate 605, so as to blow off the scraped dust later;

[0045] Then, a fixing column 612 is fixedly connected to the offset position of one end face of the auxiliary side wheel 602, and a pull rope 611 is wound around the outer wall of the fixing column 612, and the other end of the pull rope 611 is fixedly connected to an end face of the push handle 610 away from the push rod 609, and a tension spring 613 is provided on the outer wall of the push rod 609, and one end of the tension spring 613 is fixedly connected to an end of the air cylinder 607, and the other end of the tension spring 613 is fixedly connected to an end face of the push handle 610 toward the push rod 609, so that during the rotation of the auxiliary side wheel 602, the fixing column 612 can be driven to move eccentrically around the auxiliary side wheel 602 to pull the pull rope 611, so that The piston 608 moves in the air cylinder 607 to draw air, and at the same time can drive the piston 608 back to the initial position through the rebound force of the tension spring 613, and is fixedly connected to a connecting rod three 606 toward a side wall of the vehicle beam body 1 through the fixed plate 603, and the other end of the connecting rod three 606 is fixedly connected to the air cylinder 607, and one end of the air cylinder 607 faces the rejection plate 605, and at the same time, one end of the air cylinder 607 is in a truncated cone shape, so that air can be blown onto the surface of the rejection plate 605 to blow away the dust concentrated on the rejection plate 605, thereby reducing the interference of dust on subsequent camera recognition technology, so that defects such as cracks can be captured more clearly and accurately.

[0046] It should be noted that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crane beam fatigue cracking detection device, comprising a crane beam body (1) and a connecting frame plate (2), characterized in that: The vehicle beam body (1) is located on a side where the two connecting frame plates (2) are close to each other, and a support plate (3) is symmetrically fixedly connected to a side wall of the two connecting frame plates (2) that is away from each other, and a sliding groove (4) is provided on one side wall of the support plate (3); The surface of the connecting frame plate (2) is provided with a rotating detection component (5) so as to carry out photographing and detection around the crane beam body (1) when the crane beam is being inspected; A dust cleaning and blowing component (6) is provided on one side wall of the connecting frame plate (2) to centrally blow away dust at the web position, thereby reducing interference of dust on the camera recognition technology; The rotation detection component (5) comprises a through slot (501), and the through slot (501) is provided at the middle position of the two connecting frame plates (2), the inner wall of the through slot (501) is rotatably connected to a rotating rod (502), and the outer wall of the rotating rod (502) is symmetrically fixedly connected to a moving wheel (503), wherein the outer wall of one of the rotating rods (502) is fixedly connected to a bevel gear 1 (504), wherein the same side wall of the two supporting plates (3) is fixedly connected to a mounting plate (505), and the other side wall of the mounting plate (505) is fixedly mounted with a driving motor (506); An output shaft at one end of the driving motor (506) passes through the interior of the mounting plate (505) and is fixedly connected to a second bevel gear (507), and one side of the second bevel gear (507) is meshed and matched with one side of the first bevel gear (504); The inner wall of the slide groove (4) is slidably connected with a slip ring (508), and the inner wall of the slip ring (508) is provided with a tooth groove (509) corresponding to the bevel gear 2 (507), and one side of the bevel gear 2 (507) is meshed with the tooth groove (509); the outer wall of the slip ring (508) is fixedly connected with a limit ring (510), and the inner wall of the slide groove (4) is provided with a limit groove (511) corresponding to the limit ring (510), and the outer wall of the limit ring (510) is slidably connected with the inner wall of the limit groove (511); one end surface of the slip ring (508) is fixedly connected with a mounting block (512), and the upper and lower surfaces of the mounting block (512) are slidably matched with the inner wall of the slide groove (4), and a camera component (513) is fixedly installed inside the mounting block (512); the cleaning blower The dust component (6) comprises a connecting rod one (601), one end of the four connecting rods one (601) being symmetrically fixedly connected to a side wall of two connecting frame plates (2) close to each other at an equal distance, and the other end of the connecting rod one (601) is rotatably connected to an auxiliary side wheel (602), one side outer wall of the auxiliary side wheel (602) is fitted and rolled with the side wall of the vehicle beam body (1), one side wall of the two connecting frame plates (2) away from the camera component (513) is symmetrically fixedly connected to a fixing plate (603), and the fixing plate (603) is fixedly connected to a side wall of the vehicle beam body (1) with a connecting rod two (604), and the other end of the connecting rod two (604) is fixedly connected to a rejection plate (605), and the outer wall of the rejection plate (605) is fitted and matched with the concave surface of the side wall of the vehicle beam body (1).

2. A crane beam fatigue cracking detection device according to claim 1, characterized in that: A connecting rod three (606) is fixedly connected to a side wall of the fixing plate (603) facing the vehicle beam body (1), and the other end of the connecting rod three (606) is fixedly connected to an air cylinder (607), one end of the air cylinder (607) faces the rejection plate (605), and one end of the air cylinder (607) is in a truncated cone shape.

3. A crane beam fatigue cracking detection device according to claim 2, characterized in that: The inner wall of the gas cylinder (607) is slidably connected to a piston (608), and one end surface of the piston (608) is fixedly connected to a push rod (609), the other end of the push rod (609) passes through the interior of the gas cylinder (607) and extends to the outside of the gas cylinder (607), and the extended end of the push rod (609) is fixedly connected to a push handle (610).

4. A crane beam fatigue cracking detection device according to claim 3, characterized in that: One end face of the auxiliary side wheel (602) is fixedly connected to a fixing column (612) at a deflected position, and a pull rope (611) is wound around the outer wall of the fixing column (612), and the other end of the pull rope (611) is fixedly connected to an end face of the push handle (610) away from the push rod (609).

5. A crane beam fatigue cracking detection device according to claim 4, characterized in that: A tension spring (613) is provided on the outer wall of the push rod (609), one end of the tension spring (613) is fixedly connected to one end of the air cylinder (607), and the other end of the tension spring (613) is fixedly connected to an end surface of the push handle (610) facing the push rod (609).

6. A crane beam fatigue cracking detection device according to claim 5, characterized in that: The push rod (609) forms a telescopic structure with the push handle (610) via a tension spring (613).

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