Defect visual inspection equipment for boiler metal raw materials

Abstract

The invention relates to the technical field of flaw detection, in particular to flaw visual detection equipment for boiler metal raw materials, which comprises a visual detection machine, a cross rod is fixedly mounted at the upper end of the visual detection machine, a moving assembly is slidably connected to the outer surface of the cross rod, and a mounting cover is fixedly mounted at the lower end of the moving assembly. And a visual detection mechanism is arranged in the mounting cover. The piston assembly is controlled by the air cylinder assembly to achieve extension and recovery of the detection probe, in the lifting process of the detection probe, the auxiliary linkage assembly automatically opens and closes the bottom protection structure, it is guaranteed that the probe is not blocked during detection and is stored and protected when not used, and pressurized gas assists in cleaning the surface of the probe during recovery; meanwhile, smooth lifting of the piston assembly is guaranteed through the lubricating mechanism, multiple functions of equipment self-adaptive positioning, accurate detection of the detection probe, automatic opening and closing of the protection structure, auxiliary cleaning of the probe, smooth lubrication guarantee and the like are integrally achieved, and the defect visual detection efficiency and effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of defect detection, and particularly to a visual defect detection device for boiler metal raw materials. Background Art

[0002] During the production and use of boiler metal pipe raw materials, defects such as cracks, inclusions, pores, and surface oxidation may occur, directly affecting the safety and service life of the boiler. Traditional manual inspection has problems such as low efficiency, strong subjectivity, and high missed inspection rate, and cannot meet the requirements of modern industry for high-precision and high-efficiency inspection. The automated inspection technology based on machine vision has become the mainstream solution for defect inspection of boiler metal raw materials due to its advantages such as non-contact, high speed, and high precision.

[0003] In the prior art, a visual inspection device for the inner and outer walls of steel pipes with the publication number CN218212705U relates to the technical field of steel pipe quality inspection. By controlling the rotation motor, the connecting gear is driven to rotate, and the rotation of the steel pipe is driven by the meshing between the connecting gear and the driving gear. Then, with the installation of the CCD camera, the rotating steel pipe is continuously scanned, and the line-scanned images are sent to a computer program for synthesis processing to obtain an unfolded cylindrical surface image, thus facilitating the visual inspection of the steel pipe.

[0004] To solve the problem that the traditional visual inspection of the inner and outer walls of steel pipes is usually affected by technicians and affects the inspection effect, the above document uses the method of continuously scanning the rotating steel pipe with the installation of a CCD camera. However, in actual use, the inspection camera lacks protective measures, does not have adaptive retraction and extension during inspection and idle time, and when the traditional inspection head detects stains and defects on metal pipe fittings, it is easy to adhere to dust and affect the inspection effect.

[0005] Therefore, the present invention proposes a visual defect detection device for boiler metal raw materials to solve the problems that the existing inspection camera lacks protective measures, does not have adaptive retraction and extension during inspection and idle time, and when the traditional inspection head detects stains and defects on metal pipe fittings, it is easy to adhere to dust and affect the inspection effect. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a visual defect detection device for boiler metal raw materials to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A visual defect detection device for boiler metal raw materials, including a visual detection machine. A cross bar is fixedly installed at the upper end of the visual detection machine. A moving component is slidably connected to the outer surface of the cross bar. An installation cover is fixedly installed at the lower end of the moving component. A visual detection mechanism is arranged inside the installation cover. The visual detection mechanism includes a piston component and an auxiliary linkage component. A walking and guiding component is arranged at the bottom end of the installation cover. The walking and guiding component includes a sealing plate and a guiding wheel set. The piston component includes an operation cylinder one, a working cylinder two, a piston plate and a piston rod. A receiving groove is opened at the lower end of the piston rod. A detection probe is arranged inside the receiving groove. The auxiliary linkage component is arranged outside the detection probe.

[0008] Preferably, a cylinder component one and a cylinder component two are respectively arranged on both sides of the operation cylinder one. The upper sides of the cylinder component one and the cylinder component two are fixedly connected with a top side inlet pipe that is connected through and communicated with the inner wall of the upper end of the operation cylinder one. The lower sides of the cylinder component one and the cylinder component two are fixedly connected with a bottom side inlet pipe that is connected through and communicated with the inner wall of the lower end of the operation cylinder one.

[0009] Preferably, the outer surface of the piston plate is slidably connected to the inner wall of the operation cylinder one. An annular groove is opened on the inner wall of the lower side of the piston plate. A pressure relief component is arranged inside the annular groove. The pressure relief component includes an annular elastic block and an embedded ring plate. A buffer groove is opened through the upper end of the annular groove. The upper end of the annular elastic block is fixedly connected to the top surface of the inner cavity of the buffer groove. The semi-sectional view of the annular elastic block is in a "U" - shaped structure. The lower end of the annular elastic block is fixedly connected to the upper surface of the embedded ring plate. The outer surface of the embedded ring plate is movably connected to the inner wall of the annular groove.

[0010] Preferably, a pressure transmission groove is opened on the inner walls of the piston plate and the piston rod. The pressure transmission groove is composed of a bent groove and a straight groove.

[0011] Preferably, the auxiliary linkage component includes strengthening arm plates. There are multiple groups of strengthening arm plates and they are arranged in a circular array about the central axis of the piston rod. Limiting grooves are respectively opened on the inner walls of the strengthening arm plates.

[0012] Preferably, a limiting component and a linkage plate component are arranged outside the strengthening arm plates. The limiting component is fixedly installed on the outer surface of the lower end of the sealing plate. The limiting component includes a reinforcing ring plate. A limiting track is fixedly installed inside the inner ring of the reinforcing ring plate. The reinforcing ring plate and the limiting track are of an integrally formed structure.

[0013] Preferably, the linkage plate component includes a movable protection plate. The movable protection plate is composed of a U - shaped plate and a triangular plate. The outer surface of the U - shaped plate is slidably connected to the inner surface of the limiting track. A limiting slide bar is fixedly installed inside the U - shaped plate. The outer surface of the limiting slide bar is movably connected to the inner wall of the limiting groove.

[0014] Preferably, a block is fixedly installed on the outer surface of the lower end of the second working cylinder. The block is respectively adapted and embedded with an embedding groove fixedly installed on the inner wall of the sealing plate. An inner protection cylinder is fixedly installed on the inner circumferential surface of the second working cylinder. Ball grooves are uniformly formed on the inner wall of the inner protection cylinder, and balls are movably connected inside the ball grooves.

[0015] Preferably, an annular lubricating cavity is formed between the second working cylinder and the inner protection cylinder. An annular rubber plate is fixedly installed inside the annular lubricating cavity. An extrusion contact rod is fixedly installed on the inner circumferential surface of the annular rubber plate. An extrusion cotton is arranged inside the extrusion contact rod. The inner circumferential surface of the extrusion cotton is movably abutted against the balls.

[0016] Preferably, an extrusion member is arranged on the outer circumferential surface of the annular rubber plate. The extrusion member includes an extrusion connecting rod. The outer surface of the upper side of the extrusion connecting rod is movably abutted against the outer surface of the annular rubber plate. The inner surface of the lower end of the extrusion connecting rod is fixedly connected with the outer surface of the movable protection plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: A visual defect detection device for boiler metal raw materials proposed by the present invention controls the piston assembly by using a cylinder assembly to realize the extension and retraction of the detection probe. During the lifting and lowering process of the detection probe, the auxiliary linkage assembly automatically opens and closes the bottom protection structure to ensure that the probe is unobstructed during detection and is stored and protected when idle. At the same time, pressurized gas assists in cleaning the surface of the probe during retraction. Meanwhile, the lubrication mechanism ensures the smooth lifting and lowering of the piston assembly. The overall device realizes multiple functions such as adaptive positioning of the device, precise detection of the detection probe, automatic opening and closing of the protection structure, auxiliary cleaning of the probe, and lubrication to ensure smoothness, improves the efficiency and effect of visual defect detection, and prolongs the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural diagram of the present invention; Figure 2 is a front structural diagram of the present invention; Figure 3 is a connection structural diagram of the moving assembly and the installation cover of the present invention; Figure 4 is a bottom view connection structural diagram of the installation cover and the walking guide assembly of the present invention; Figure 5 is of the present invention Figure 4 semi-sectional structural diagram; Figure 6 is of the present invention Figure 5 enlarged structural diagram at A; Figure 7 is of the present invention Figure 5Schematic diagram of the enlarged structure at position B; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at position B1; Figure 9 For the present invention Figure 7 Schematic diagram of the enlarged structure at position B2; Figure 10 Schematic diagram of the connection cross-section structure between the piston assembly and the auxiliary linkage assembly of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure at position C; Figure 12 Schematic diagram of the disassembled structure between the piston assembly and the pressure relief part of the present invention; Figure 13 For the present invention Figure 12 Schematic diagram of the enlarged structure at position D; Figure 14 Schematic diagram of the bottom view of the piston assembly and the auxiliary linkage assembly of the present invention; Figure 15 Schematic diagram of the connection structure between the linkage plate and the limiting part of the present invention.

[0019] In the figure: 1. Visual inspection machine; 11. Cross bar; 12. Moving component; 2. Installation cover; 3. Walking guiding component; 31. Sealing plate; 310. Chute; 210. Limiting vertical rod; 21. Operating cylinder one; 211. Working cylinder two; 212. Annular rubber plate; 2121. Extrusion contact rod; 213. Extrusion cotton; 214. Inner protection cylinder; 2140. Reserved groove; 22. Cylinder component one; 23. Cylinder component two; 221. Top side inlet pipe; 222. Bottom side inlet pipe; 24. Piston plate; 241. Piston rod; 25. Center line pipe; 240. Annular groove; 2401. Buffer groove; 2402. Embedded ring plate; 2403. Annular elastic block; 2400. Pressure transmission groove; 2420. Accommodating groove; 242. Detection probe; 26. Reinforcing arm plate; 260. Limiting groove; 27. Reinforcing ring plate; 271. Limiting track; 28. Movable protection plate; 281. Limiting slide bar; 29. Extrusion connecting rod. Detailed implementation manners

[0020] In order to clearly and completely describe the purpose, technical solutions of the present invention and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] Example 1, please refer to Figures 1 - 15 , the present invention provides a technical solution: a visual defect detection device for boiler metal raw materials, including a visual inspection machine 1. A cross bar 11 is fixedly installed at the upper end of the visual inspection machine 1. A moving component 12 is slidably connected to the outer surface of the cross bar 11. An installation cover 2 is fixedly installed at the lower end of the moving component 12. A visual inspection mechanism is arranged inside the installation cover 2. The visual inspection mechanism includes a piston component and an auxiliary linkage component. A walking and guiding component 3 is arranged at the bottom end of the installation cover 2. The walking and guiding component 3 includes a sealing plate 31 and a guiding wheel group. The piston component includes an operation cylinder 21, a working cylinder 211, a piston plate 24 and a piston rod 241. A receiving groove 2420 is opened at the lower end of the piston rod 241. A detection probe 242 is arranged inside the receiving groove 2420. The auxiliary linkage component is arranged outside the detection probe 242. The upper end of the operation cylinder 21 is fixedly connected to the inner top surface of the installation cover 2. A limiting vertical rod 210 is fixedly installed on the inner top surface of the operation cylinder 21. A center line pipe 25 is movably connected inside the limiting vertical rod 210. The center line pipe 25 penetrates through the central inner walls of the piston plate 24 and the piston rod 241. A wiring hose is arranged inside the center line pipe 25. The wiring hose is electrically connected to the detection probe 242. The bottom end of the center line pipe 25 is fixedly connected to the upper end of the detection probe 242 through a joint. On both sides of the operation cylinder 21, a cylinder component 22 and a cylinder component 23 are respectively arranged. The upper sides of the cylinder component 22 and the cylinder component 23 are fixedly connected with a top side inlet pipe 221 that is connected to the inner wall of the upper end of the operation cylinder 21 in a penetrating manner. The lower sides of the cylinder component 22 and the cylinder component 23 are fixedly connected with a bottom side inlet pipe 222 that is connected to the inner wall of the lower end of the operation cylinder 21 in a penetrating manner. Solenoid valves are arranged on the inner side walls of the top side inlet pipe 221 and the bottom side inlet pipe 222. In this embodiment, through the movement of the moving component 12, the installation cover 2 and the walking and guiding component 3 are adaptively moved in the horizontal and vertical directions to detect the defects of the boiler metal pipe fitting master materials placed on the visual inspection machine 1. When the guiding wheel group of the walking and guiding component 3 contacts the surface of the pipe fitting, the vertical height of the detection probe 242 is controlled to change, ensuring that while the detection probe 242 extends, the auxiliary linkage component withdraws the occlusion of the bottom of the detection probe 242. This auxiliary linkage component can also ensure the storage and protection of the detection probe 242 when it is idle and not in use, avoiding damage.

[0022] Example 2, refer to the appendix Figures 1 - 15, on the basis of the first embodiment, in order to realize the detection of the detection probe 242 during use and the storage and protection when not in use: the outer surface of the piston plate 24 is slidably connected to the inner wall of the first operation cylinder 21. An annular groove 240 is formed in the lower inner wall of the piston plate 24, and a pressure relief member is arranged inside the annular groove 240. The pressure relief member includes an annular elastic block 2403 and an embedded ring plate 2402. A buffer groove 2401 is formed through the upper end of the annular groove 240. The upper end of the annular elastic block 2403 is fixedly connected to the top surface of the inner cavity of the buffer groove 2401. The semi-sectional view of the annular elastic block 2403 is in a "U" shape structure. The lower end of the annular elastic block 2403 is fixedly connected to the upper surface of the embedded ring plate 2402. The outer surface of the embedded ring plate 2402 is movably connected to the inner wall of the annular groove 240. A pressure transmission groove 2400 is formed in the inner walls of the piston plate 24 and the piston rod 241. The pressure transmission groove 2400 is composed of a bent groove and a straight groove; In this embodiment, referring to Figure 5 and Figure 6 As shown, when it is necessary to detect the surface defects of the boiler metal pipe fittings, open the top inlet pipe 221 channels of the first cylinder assembly 22 and the second cylinder assembly 23, so that the pressurized gas enters the upper cavity positions of the first operation cylinder 21 and the piston plate 24 through the top inlet pipe 221. At this time, the pressurized gas fills the inner cavity of the first operation cylinder 21 until the piston plate 24 is pushed downward. At this time, the piston plate 24 drives the piston rod 241 and the detection probe 242 connected to the bottom to move downward synchronously. In addition, after the defect detection is completed, when the detection probe 242 is recovered, at this time, control the bottom inlet pipe 222 channel to open, and the pressurized gas enters the lower cavity positions of the piston plate 24 and the first operation cylinder 21. Under the continuous input of the pressurized gas, the piston plate 24 is pushed upward until the piston plate 24 rises to the position where it no longer rises. After the pressurized gas fills the lower cavity position of the first operation cylinder 21, it will push the embedded ring plate 2402 upward. At this time, the annular elastic block 2403 is compressed by the top push of the embedded ring plate 2402. And at this time, the bottom position of the annular groove 240 avoids the input port of the pressure transmission groove 2400, so as to open the channel of the pressure transmission groove 2400. Then, part of the pressurized gas will enter the straight groove through the input port of the bent groove for transmission, and finally be ejected through the output end of the straight groove. Through this setting, not only can the lifting movement of the piston rod 241 be satisfied, but also the auxiliary cleaning of the detection probe 242 after detection and recovery can be ensured, avoiding impurities from accumulating on the surface of the detection probe 242 and affecting the subsequent detection effect, and at the same time, the maintenance burden can be reduced.

[0023] Embodiment Three, referring to the attached Figures 1 - 15, on the basis of the second embodiment, in order to realize the opening and closing of the bottom protection structure of the detection probe 242 when the piston assembly moves up and down: the auxiliary linkage assembly includes a reinforcing arm plate 26. There are multiple groups of reinforcing arm plates 26, which are arranged in a circular array about the central axis of the piston rod 241. Limiting grooves 260 are respectively formed on the inner walls of the reinforcing arm plates 26; a limiting member and a linkage plate member are arranged on the outer side of the reinforcing arm plate 26. The limiting member is fixedly installed on the lower outer surface of the sealing plate 31. The limiting member includes a reinforcing ring plate 27. A limiting track 271 is fixedly installed on the inner ring of the reinforcing ring plate 27. The reinforcing ring plate 27 and the limiting track 271 are of an integrally formed structure; the linkage plate member includes a movable guard plate 28. The movable guard plate 28 is composed of a U-shaped plate and a triangular plate. The outer surface of the U-shaped plate is slidably connected with the inner surface of the limiting track 271. A limiting slide bar 281 is fixedly installed on the inner side of the U-shaped plate. The outer surface of the limiting slide bar 281 is movably connected with the inner wall of the limiting groove 260; In this embodiment, referring to Figures 7 - 8 as shown, when the piston rod 241 moves up and down, the reinforcing arm plate 26 connected to its lower end will move synchronously. At this time, with the dual limiting effects of the limiting track 271 and the limiting groove 260, when the reinforcing arm plate 26 performs a longitudinal movement, the limiting slide bar 281 moves inside the limiting groove 260, and at this time the movable guard plate 28 moves horizontally along the limiting track 271. Specifically, when the reinforcing arm plate 26 rises, multiple groups of movable guard plates 28 move inwards synchronously, and the triangular plates at the bottom form a barrier to block the detection probe 242. When the reinforcing arm plate 26 descends, multiple groups of movable guard plates 28 expand outwards synchronously to remove the occlusion of the bottom of the detection probe 242. It should be noted that here multiple groups of reinforcing arm plates 26 can not only satisfy the triggering of the linkage plate member, but also form a maintenance effect on the detection probe 242, avoiding accidental contact damage to the detection probe 242 during defect detection and extending its service life.

[0024] Embodiment 4, referring to the attached Figures 1 - 15, on the basis of Embodiment III, in order to achieve the smoothness of the lifting of the piston assembly and ensure the efficiency during the detection of the detection probe 242: an inlay block is fixedly installed on the outer surface of the lower end of the second working cylinder 211, and the inlay block is respectively adapted and embedded with an inlay groove fixedly installed on the inner wall of the sealing plate 31. An inner protection cylinder 214 is fixedly installed on the inner circumferential surface of the second working cylinder 211. Ball grooves are evenly formed on the inner wall of the inner protection cylinder 214, and balls are movably connected inside the ball grooves; a reserved groove 2140 is formed on the inner wall of the lower end of the inner protection cylinder 214, and the outer surface of the reinforcing arm plate 26 is movably connected to the inner surface of the reserved groove 2140; the inner protection cylinder 214 can not only be used as a limiting member for the lifting movement of the piston rod 241, but also meet the lubrication effect during the lifting movement of the piston rod 241. In addition, through the formation of the reserved groove 2140, the reserved groove 2140 is adapted to a plurality of reinforcing arm plates 26 one by one, which can be used as the storage of the reinforcing arm plate 26 when the detection probe 242 is recycled, and at the same time ensure the limiting effect during the movement of the reinforcing arm plate 26; an annular lubrication cavity is formed between the second working cylinder 211 and the inner protection cylinder 214, and an annular rubber plate 212 is fixedly installed inside the annular lubrication cavity. An extrusion contact rod 2121 is fixedly installed on the inner circumferential surface of the annular rubber plate 212, an extrusion cotton 213 is arranged inside the extrusion contact rod 2121, and the inner circumferential surface of the extrusion cotton 213 is movably abutted against the ball; an extrusion member is arranged on the outer circumferential surface of the annular rubber plate 212. The extrusion member includes an extrusion connecting rod 29. The outer surface of the upper side of the extrusion connecting rod 29 is movably abutted against the outer surface of the annular rubber plate 212, and the inner surface of the lower end of the extrusion connecting rod 29 is fixedly connected to the outer surface of the movable protection plate 28; a second chute is formed on the inner wall of the lower end of the second working cylinder 211, and a chute 310 adapted to the second chute is formed on the inner wall of the lower end of the sealing plate 31. The inner walls of the chute 310 and the second chute are slidably connected to the outer surface of the extrusion connecting rod ********** In this embodiment, during the lifting movement of the piston assembly, not only can the opening and closing of the protection structure of the detection probe 242 be realized, but also the lubrication of the side wall of the piston rod 241 can be satisfied synchronously. Refer to Figures 7 - 8 As shown, a lubrication cavity is formed between the second working cylinder 211 and the inner protection cylinder 214. When the movable protection plate 28 is pushed inward by the movement of the reinforcing arm plate 26, at this time, the extrusion connecting rod 29 is synchronously pushed inward, and the annular rubber plate 212 is extruded. At this time, the extrusion contact rod 2121 inside the annular rubber plate 212 squeezes the extrusion cotton 213 inward. It should be noted that the extrusion cotton 213 is saturated with lubricating oil, and the lubricating oil is extruded when being extruded by an external force and contacts the ball, and the ball is lubricated, further ensuring the smoothness during the movement of the piston rod 241. In this way, a mechanism can achieve multiple effects.

[0025] Embodiment V, refer to the appendix Figures 1 - 15 , on the basis of Embodiment IV, the present invention further provides a method for using a visual defect detection device for boiler metal raw materials, including the following steps: Step 1: Adaptive movement and positioning of the equipment: The movement of the moving assembly 12 drives the installation cover 2 and the travel guide assembly 3 to adaptively move in the horizontal and vertical directions, so that the guide wheel group of the travel guide assembly 3 contacts the surface of the boiler metal pipe to be inspected, completing the preliminary positioning of the equipment at the inspection position; Step 2: Extending the detection probe: Open the top inlet pipe 221 of cylinder assembly 1 22 and cylinder assembly 2 23. Pressurized gas enters the upper chamber of operating cylinder 1 21 and piston plate 24 through the top inlet pipe 221, pushing piston plate 24 downward. The piston plate 24 then drives the piston rod 241 and the detection probe 242 connected to the bottom to move downward synchronously, extending the detection probe in preparation for defect detection. Step 3: Opening, closing, and inspecting the protective structure at the bottom of the detection probe: As the piston rod 241 rises and falls, the reinforcing arm plate 26 connected to its lower end moves synchronously. Under the dual limiting action of the limiting track 271 and the limiting groove 260, the movable guard plate 28 moves horizontally along the limiting track 271. When the reinforcing arm plate 26 descends, the multiple groups of movable guard plates 28 simultaneously expand outward, removing the obstruction on the bottom of the detection probe 242. At this time, the detection probe 242 performs defect detection on the surface of the boiler metal pipe fittings. Step 4: Recover the detection probe and auxiliary cleaning: After the defect detection is completed, the bottom side inlet pipe 222 is controlled to open, and the pressurized gas enters the piston plate 24 and the lower cavity position of the operating cylinder 21, pushing the piston plate 24 upward until the piston plate 24 rises to the limit position. At this time, the pressurized gas fills the lower cavity position of the operating cylinder 21, pushing the embedded ring plate 2402 upward, and the annular spring block 2403 is compressed. The bottom position of the annular groove 240 avoids the input port of the pressure delivery groove 2400, and part of the pressurized gas enters the straight groove through the input port of the curved groove. The material is transmitted through the slot and finally ejected through the output end of the straight slot to assist in cleaning the recovered detection probe 242 to avoid the accumulation of impurities that affect the subsequent detection effect. At the same time, during the lifting and lowering movement of the piston assembly, when the movable guard plate 28 is moved inward by the reinforcing arm plate 26, the extrusion connecting rod 29 is synchronously moved inward and squeezes the annular rubber plate 212, so that the inner extrusion contact rod 2121 squeezes the extrusion cotton 213 filled with lubricating oil inward, and the lubricating oil is squeezed out and contacts the ball, thereby ensuring the smoothness of the movement of the piston rod 241 and further improving the efficiency of defect detection.

[0026] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A visual defect detection device for boiler metal raw materials, including a visual detector (1), wherein a cross bar (11) is fixedly installed at the upper end of the visual detector (1), and a moving component (12) is slidably connected to the outer surface of the cross bar (11), characterized in that: The lower end of the moving component (12) is fixedly installed with an installation cover (2). A visual detection mechanism is arranged inside the installation cover (2). The visual detection mechanism includes a piston component and an auxiliary linkage component. A walking guiding component (3) is arranged at the bottom end of the installation cover (2). The walking guiding component (3) includes a sealing plate (31) and a guiding wheel set. The piston component includes an operation cylinder one (21), a working cylinder two (211), a piston plate (24) and a piston rod (241). A receiving groove (2420) is formed at the lower end of the piston rod (241). A detection probe (242) is arranged inside the receiving groove (2420). The auxiliary linkage component is arranged outside the detection probe (242).

2. The visual defect detection device for boiler metal raw materials according to claim 1, characterized in that: On both sides of the operation cylinder one (21), a cylinder component one (22) and a cylinder component two (23) are respectively arranged. The upper sides of the cylinder component one (22) and the cylinder component two (23) are fixedly connected with a top side inlet pipe (221) that is connected to the inner wall of the upper end of the operation cylinder one (21) in a penetrating manner. The lower sides of the cylinder component one (22) and the cylinder component two (23) are fixedly connected with a bottom side inlet pipe (222) that is connected to the inner wall of the lower end of the operation cylinder one (21) in a penetrating manner.

3. The visual defect detection device for boiler metal raw materials according to claim 2, wherein: The outer surface of the piston plate (24) is slidably connected with the inner wall of the operation cylinder one (21). An annular groove (240) is formed on the inner wall of the lower side of the piston plate (24). A pressure relief member is arranged inside the annular groove (240). The pressure relief member includes an annular elastic block (2403) and an embedded ring plate (2402). A buffer groove (2401) is formed at the upper end of the annular groove (240) in a penetrating manner. The upper end of the annular elastic block (2403) is fixedly connected with the top surface of the inner cavity of the buffer groove (2401). The semi-sectional view of the annular elastic block (2403) is in a "U" - shaped structure. The lower end of the annular elastic block (2403) is fixedly connected with the upper surface of the embedded ring plate (2402). The outer surface of the embedded ring plate (2402) is movably connected with the inner wall of the annular groove (240).

4. The visual defect detection device for boiler metal raw materials according to claim 3, characterized in that: Pressure transmission grooves (2400) are formed on the inner walls of the piston plate (24) and the piston rod (241). The pressure transmission grooves (2400) are composed of a bent groove and a straight groove in combination.

5. The visual defect detection device for boiler metal raw materials according to claim 4, characterized in that: The auxiliary linkage component includes reinforcing arm plates (26). There are multiple groups of reinforcing arm plates (26) and they are circularly arrayed about the central axis of the piston rod (241). Limiting grooves (260) are respectively formed on the inner walls of the reinforcing arm plates (26).

6. The visual defect detection device for boiler metal raw materials according to claim 5, wherein: A limiting member and a linkage plate member are arranged outside the reinforcing arm plate (26). The limiting member is fixedly installed on the lower outer surface of the sealing plate (31). The limiting member includes a reinforcing ring plate (27). A limiting track (271) is fixedly installed on the inner ring of the reinforcing ring plate (27). The reinforcing ring plate (27) and the limiting track (271) are of an integrally formed structure.

7. The visual defect detection device for boiler metal raw materials according to claim 6, characterized in that: The linkage plate member includes a movable guard plate (28), and the movable guard plate (28) is composed of a U-shaped plate and a triangular plate. The outer surface of the U-shaped plate is slidably connected to the inner surface of the limit track (271). A limit slide rod (281) is fixedly installed inside the U-shaped plate, and the outer surface of the limit slide rod (281) is movably connected to the inner wall of the limit groove (260).

8. The visual defect detection device for boiler metal raw materials according to claim 1, characterized in that: A block is fixedly installed on the lower outer surface of the second working cylinder (211). The block is respectively fitted and embedded with an embedding groove fixedly installed on the inner wall of the sealing plate (31). An inner protection cylinder (214) is fixedly installed on the inner circumferential surface of the second working cylinder (211). Ball grooves are evenly formed on the inner wall of the inner protection cylinder (214), and balls are movably connected inside the ball grooves.

9. The visual defect detection device for boiler metal raw materials according to claim 8, characterized in that: An annular lubrication cavity is formed between the second working cylinder (211) and the inner protection cylinder (214). An annular rubber plate (212) is fixedly installed inside the annular lubrication cavity. An extrusion contact rod (2121) is fixedly installed on the inner circumferential surface of the annular rubber plate (212). An extrusion cotton (213) is arranged inside the extrusion contact rod (2121), and the inner circumferential surface of the extrusion cotton (213) is in movable contact with the balls.

10. A visual defect detection device for boiler metal raw materials according to claim 9, characterized in that: An extrusion member is arranged on the outer circumferential surface of the annular rubber plate (212). The extrusion member includes an extrusion connecting rod (29). The upper outer surface of the extrusion connecting rod (29) is in movable contact with the outer surface of the annular rubber plate (212), and the lower inner surface of the extrusion connecting rod (29) is fixedly connected to the outer surface of the movable guard plate (28).

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