Stainless steel tube detection device

Abstract

The invention belongs to the technical field of manufacturing of other special equipment, and particularly relates to a stainless steel tube detection device which comprises a material frame, two limiting plates and two driving mechanisms, the two limiting plates and the two driving mechanisms are symmetrically installed on the material frame, a supporting frame is arranged at one end of the material frame, a lead screw is rotatably installed on the supporting frame and is in threaded connection with a movable frame, and the movable frame is connected with a movable base. Two sets of detection arms are installed on the movable frame, an inner cavity scanner and an outer wall scanner are installed on the two sets of detection arms respectively, the driving mechanism comprises two sets of synchronous shafts, the synchronous shafts are rotationally installed on the material frame, and rotating wheels are installed at one ends of the synchronous shafts. And secondly, the synchronous disc rotates along with friction of the end faces of the steel pipes, rotation obstruction of the limiting plates to the steel pipes is greatly reduced, and the accuracy of steel pipe detection is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of other special equipment manufacturing, in particular to a stainless steel pipe detection device. Background Art

[0002] Steel pipes are divided into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes and composite steel pipes according to their materials. Stainless steel pipes are a type of alloy steel pipes. During the production and processing of stainless steel pipes, it is necessary to measure the parameters of the inner and outer rings of the stainless steel pipes to ensure that the produced stainless steel pipes meet the application standards. The existing parameter measurements of the inner and outer rings of stainless steel pipes are generally carried out by laser scanners.

[0003] The patent with announcement number CN117029718A discloses a precision steel pipe detection device, including a rolling mechanism, an inner cavity scanning mechanism, and an outer wall scanning mechanism. The rolling mechanism includes two sets of rotating shafts and two sets of sleeves, the inner cavity scanning mechanism includes an inner cavity scanner, and the outer wall scanning mechanism includes an outer wall scanner. This solution places the steel pipe to be tested on the rolling mechanism and sleeves it on the inner cavity scanning mechanism. The inner wall of the steel pipe is scanned by the inner cavity scanning mechanism to obtain the inner wall data of the steel pipe. The outer surface and port data of the outer wall scanning mechanism are obtained by three-dimensional scanning, so as to intuitively obtain the steel pipe parameters and ensure that each section of the steel pipe meets the use standards.

[0004] In the above scheme, when placing the steel pipe to be tested, it is necessary to sleeve the steel pipe to be tested on the inner cavity scanning mechanism, then rotate the T-block to set it vertically, insert the limit piece into the limit groove, and then fix the limit piece and the block with bolts, which makes it very inconvenient for the staff to take and place the steel pipe, thereby reducing the detection efficiency of the steel pipe; for this reason, the present invention provides a stainless steel pipe detection device. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a stainless steel pipe detection device described in the present invention comprises a material rack, two sets of limit plates, and two sets of driving mechanisms, the two sets of limit plates and the two sets of driving mechanisms are symmetrically mounted on the material rack, a support frame is provided at one end of the material rack, a screw is rotatably mounted on the support frame, the screw is screwed to the movable frame, and two sets of detection arms are mounted on the movable frame, and the two sets of detection arms are respectively mounted with an inner cavity scanner and an outer wall scanner; the driving mechanism comprises two sets of synchronous shafts, the synchronous shaft is rotatably mounted on the material rack, a rotating wheel mounted on one end of the synchronous shaft, a pulley mounted on the other end of the synchronous shaft, both sets of pulleys are rotatably connected to a synchronous belt, a guide wheel for guiding the synchronous belt is rotatably mounted on the material rack, a first motor fixedly mounted on the material rack for driving the driving wheel, the driving wheel is rotatably connected to the synchronous belt, an avoidance groove for avoiding the detection arm is provided on the limit plate, a bearing is embedded in the limit plate, and a synchronous disk is mounted in the bearing; The coordinated setting of two sets of limit plates and two sets of driving mechanisms makes it more convenient for workers to take and place steel pipes, thereby improving the efficiency of steel pipe inspection. Secondly, the synchronous disk rotates with the friction of the steel pipe end face, which will greatly reduce the obstruction of the limit plate to the rotation of the steel pipe and ensure the accuracy of steel pipe inspection.

[0007] Preferably, a feeding mechanism is provided at the rear of the material rack, and the feeding mechanism includes two groups of conveying racks, two groups of rotating shafts are rotatably installed on the two groups of conveying racks, a driving arm is installed on one end of the rotating shaft, two ends of the connecting shaft are respectively connected to the two groups of driving arms, the lower end of the connecting rod is hinged to the connecting shaft, the upper end of the connecting rod is hinged to the supporting rack, the other ends of the two groups of rotating shafts are installed with synchronous wheels, the two groups of synchronous wheels are meshed with transmission belts, the transmission belts are meshed with driving wheels, a second motor for driving the driving wheel is installed on one side of one group of conveying racks, a number of groups of discharge troughs for placing steel pipes are evenly installed on the conveying rack and the supporting rack, and a discharge rack for guiding the discharge of steel pipes is provided in front of the material rack; After the steel pipe inspection is completed, the second motor is started again. The inspected steel pipe will be transferred to the unloading rack by the supporting rack and roll obliquely downward along the unloading rack to realize the unloading of the steel pipe. The coordination setting of the feeding mechanism and the unloading rack can realize automatic loading and unloading of the steel pipe, thereby improving the automation rate of the device.

[0008] Preferably, a correction mechanism is provided between the two groups of conveying frames, the correction mechanism includes a movable plate, the movable plate movably installed between the two groups of conveying frames, four groups of sliders are respectively installed at the four corners of the movable plate, a linkage plate movably installed on the slider, a correction plate fixedly connected to the linkage plate, one end of the correction plate is fixedly connected to the limit plate, two groups of rectangular slots are symmetrically opened on the conveying frame, guide posts are fixedly installed in the rectangular slots, the slider passes through the rectangular slots, the slider is slidably connected to the guide post, a spring is sleeved on the guide post, three groups of through holes are opened on the correction plate, the through holes are slidably connected to the slide rod, one end of the slide rod is fixedly connected to the conveying frame, a pin shaft is installed on the slider, an oblique slot is opened at the lower end of the linkage plate, the pin shaft is located in the oblique slot, and a roller for squeezing the movable plate is rotatably installed at one end of the driving arm; After the steel pipe is placed between the two sets of limit plates, the rotating driving arm drives the roller to squeeze the movable plate again until the driving arm is perpendicular to the movable plate. During this process, the two sets of correction plates move toward each other, so that the distance between the two sets of correction plates and the two sets of limit plates is equal to the length of the steel pipe, thereby realizing the position correction of the steel pipe and ensuring the accuracy of steel pipe detection.

[0009] The beneficial effects of the present invention are as follows: 1. The coordination of two sets of limit plates and two sets of driving mechanisms makes it more convenient for workers to take and place steel pipes, thereby improving the efficiency of steel pipe inspection. Secondly, the synchronous disk rotates with the friction of the steel pipe end face, which will greatly reduce the obstruction of the limit plate to the rotation of the steel pipe and ensure the accuracy of steel pipe inspection.

[0010] 2. Start the second motor, and the second motor drives the driving wheel to rotate. The driving wheel drives the two sets of synchronous wheels to rotate through the transmission belt. The synchronous wheel drives the rotating shaft together with the driving arm to rotate. The driving arm rotates the other set of driving arms through the connecting shaft. The rotating driving arm drives the connecting rod to rotate the supporting rack. During the rotation of the supporting rack, the discharge chute on the supporting rack will lift the steel pipe, move the steel pipe forward, and place the steel pipe in the adjacent discharge chute on the conveyor rack or between the two sets of limit plates to realize the feeding of the steel pipe. After the steel pipe inspection is completed, start the second motor again. The inspected steel pipe will be conveyed to the unloading rack by the supporting rack and roll obliquely downward along the unloading rack to realize the unloading of the steel pipe. The coordinated setting of the feeding mechanism and the unloading rack can realize automatic loading and unloading of the steel pipe, thereby improving the automation rate of the device.

[0011] 3. The rotating driving arm drives the roller to rotate, releasing the squeezing of the roller on the movable plate. Under the action of the rebound force of the spring, the slider slides upward along the guide column, and the movable plate moves with the slider, and the slider drives the pin to slide along the oblique groove. Under the guidance of the oblique groove, the two sets of linking plates and the corresponding correction plates move backwards, and the through holes on the correction plates slide along the slide rod, guiding the movement of the correction plates, so that the spacing between the two sets of correction plates and the two sets of limit plates is greater than the length of the steel pipe, so that the steel pipe can be smoothly placed between the two sets of limit plates. When the steel pipe is placed between the two sets of limit plates, the rotating driving arm drives the roller to squeeze the movable plate again until the driving arm is perpendicular to the movable plate. In this process, the two sets of correction plates move toward each other, so that the spacing between the two sets of correction plates and the two sets of limit plates is equal to the length of the steel pipe, thereby realizing the correction of the steel pipe position and ensuring the accuracy of steel pipe detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 It is a partial schematic diagram of the structure of the present invention.

[0014] Figure 2 Schematic diagram of the combination of the limiting plate and the driving mechanism of the present invention.

[0015] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 4 It is a partial schematic diagram of the feeding mechanism of the present invention.

[0017] Figure 5 It is a schematic diagram of the combination of the material rack, the limiting plate and the feeding mechanism of the present invention.

[0018] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0019] Figure 7 This is a schematic diagram of the assembly of the conveyor frame, drive arm, and movable plate of the present invention.

[0020] Figure 8 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0021] In the picture: 1. Material rack; 2. Limit plate; 201. Avoidance groove; 202. Bearing; 203. Synchronous plate; 3. Driving mechanism; 301. Synchronous shaft; 302. Rotating wheel; 303. Pulley; 304. Synchronous belt; 305. Guide wheel; 306. Driving wheel; 307. First motor; 4. Support frame; 5. Lead screw; 6. Movable frame; 7. Detection arm; 8. Inner cavity scanner; 9. External wall scanner; 10. Feeding mechanism; 101. Conveyor frame; 1011. Rectangular slot; 102. Rotating shaft; 103. Driving arm; 1031. Roller; 104. Connecting shaft; 105. Connecting rod; 106. Supporting frame; 16. Discharging trough; 107. Synchronous pulley; 108. Transmission belt; 109. Driving pulley; 110. Second motor; 111. Correction mechanism; 1111. Movable plate; 1112. Slider; 21. Pin; 1113. Interlocking plate; 31. Oblique slot; 1114. Correction plate; 41. Through hole; 42. Sliding rod; 1115. Guide post; 1116. Spring. 11. Unloading rack. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Example 1: Figure 1 and Figure 2 As shown, a stainless steel pipe detection device according to an embodiment of the present invention includes a material rack 1, two sets of limit plates 2, and two sets of drive mechanisms 3. The two sets of limit plates 2 and the two sets of drive mechanisms 3 are symmetrically mounted on the material rack 1. A support frame 4 is provided at one end of the material rack 1. A lead screw 5 is rotatably mounted on the support frame 4. The lead screw 5 is screwed to a movable frame 6. Two sets of detection arms 7 are mounted on the movable frame 6. The two sets of detection arms 7 are respectively mounted with an inner cavity scanner 8 and an outer wall scanner 9. The drive mechanism 3 includes two sets of synchronous shafts 301. The synchronous shaft 301 is rotatably mounted on the material rack 1 and is mounted on The rotating wheel 302 is on one end of the synchronous shaft 301, and the pulley 303 is installed on the other end of the synchronous shaft 301. Both sets of pulleys 303 are rotatably connected to the synchronous belt 304. A guide wheel 305 for guiding the synchronous belt 304 is rotatably installed on the material rack 1. A first motor 307 is fixedly installed on the material rack 1 for driving the driving wheel 306. The driving wheel 306 is rotatably connected to the synchronous belt 304. An avoidance groove 201 for avoiding the detection arm 7 is provided on the limit plate 2. A bearing 202 is embedded in the limit plate 2, and a synchronous disk 203 is installed in the bearing 202.

[0024] Specifically, the inner cavity scanner 8 and the outer wall scanner 9 are both composed of a laser beam emitting module, a laser beam receiving module and a data processing module. In the initial state, the spacing between the two sets of limit plates 2 is equal to the length of the steel pipe to be inspected. When the steel pipe needs to be inspected, the steel pipe is placed between the two sets of limit plates 2 so that the end of the steel pipe is located on the two sets of rotating wheels 302, and the end face of the steel pipe is facing the synchronous disk 203. Then the two sets of first motors 307 are started, and the first motor 307 drives the driving wheel 306 to rotate. The driving wheel 306 drives the two sets of pulleys 303 to rotate through the synchronous belt 304. The pulley 303 drives the synchronous shaft 301 to rotate together with the rotating wheel 302. The rotating wheel 302 drives the steel pipe to rotate, and the end face of the steel pipe drives the synchronous disk 203 to rotate through friction. Then the motor drives the lead screw 5 to rotate, and the lead screw 5 is driven by the motor to rotate. The lever 5 drives the movable frame 6 together with two sets of detection arms 7, the inner cavity scanner 8, and the outer wall scanner 9 to move toward the steel pipe, so that the inner cavity scanner 8 enters the inside of the steel pipe, and the outer wall scanner 9 passes through the avoidance groove 201 and moves along the outer wall of the steel pipe, so that the inner cavity scanner 8 and the outer wall scanner 9 respectively measure the inner ring and outer ring of the steel pipe until the inner cavity scanner 8 passes through the entire steel pipe, and then the inner cavity scanner 8 and the outer wall scanner 9 are withdrawn, the steel pipe is replaced, and it is measured according to the same operation. Compared with the existing technology, the coordination setting of the two sets of limit plates 2 and the two sets of drive mechanisms 3 makes it more convenient for the staff to take and place the steel pipe, and improves the detection efficiency of the steel pipe. Secondly, the synchronous disk 203 rotates with the friction of the end face of the steel pipe, which will greatly reduce the resistance of the limit plate 2 to the rotation of the steel pipe, thereby ensuring the accuracy of the steel pipe detection.

[0025] like Figure 3 and Figure 4 As shown, a feeding mechanism 10 is provided at the rear of the material rack 1, and the feeding mechanism 10 includes two groups of conveying racks 101, and two groups of rotating shafts 102 are rotatably installed on the two groups of conveying racks 101, and a driving arm 103 is installed on one end of the rotating shaft 102, and the two ends of the connecting shaft 104 are respectively connected to the two groups of driving arms 103, the lower end of the connecting rod 105 is hinged to the connecting shaft 104, and the upper end of the connecting rod 105 is hinged to the supporting rack 106, and the other end of the two groups of rotating shafts 102 is installed with a synchronous wheel 107, and the two groups of synchronous wheels 107 are engaged with the transmission belt 108, and the transmission belt 108 is engaged with the driving wheel 109. A second motor 110 for driving the driving wheel 109 is installed on one side of a group of conveying racks 101, and several groups of discharge troughs 16 for placing steel pipes are evenly installed on the conveying rack 101 and the supporting rack 106. A discharge rack 11 for guiding the discharge of steel pipes is provided in front of the material rack 1.

[0026] Specifically, the above-mentioned taking and placing of steel pipes requires manual work by staff, which makes the automation rate of the device relatively low. Before testing the steel pipes, the steel pipes are placed one by one in the discharge trough 16 of the conveyor frame 101. When the steel pipes need to be placed between the two sets of limit plates 2, the second motor 110 is started, and the second motor 110 drives the driving wheel 109 to rotate. The driving wheel 109 drives the two sets of synchronous wheels 107 to rotate through the transmission belt 108. The synchronous wheel 107 drives the rotating shaft 102 to rotate together with the driving arm 103. The driving arm 103 rotates together with the other set of driving arms 103 through the connecting shaft 104. The rotating driving arm 103 rotates through The connecting rod 105 is driven to rotate the supporting rack 106. During the rotation of the supporting rack 106, the discharge trough 16 on the supporting rack 106 will lift the steel pipe, move the steel pipe forward, and place the steel pipe into the adjacent discharge trough 16 on the conveying rack 101 or between the two sets of limit plates 2 to realize the feeding of the steel pipe. After the steel pipe inspection is completed, the second motor 110 is started again. The inspected steel pipe will be conveyed to the unloading rack 11 by the supporting rack 106 and roll obliquely downward along the unloading rack 11 to realize the unloading of the steel pipe. The coordinated setting of the feeding mechanism 10 and the unloading rack 11 realizes automatic loading and unloading of the steel pipe, thereby improving the automation rate of the device.

[0027] Example 2: Figures 5 to 8 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a correction mechanism 111 is provided between the two groups of conveying racks 101, the correction mechanism 111 includes a movable plate 1111, the movable plate 1111 is movably mounted between the two groups of conveying racks 101, four groups of sliders 1112 are respectively mounted at the four corners of the movable plate 1111, a linkage plate 1113 movably mounted on the slider 1112, a correction plate 1114 fixedly connected to the linkage plate 1113, one end of the correction plate 1114 is fixedly connected to the limit plate 2, and two groups of rectangular grooves 1011 are symmetrically opened on the conveying rack 101, the rectangular grooves A guide column 1115 is fixedly installed in 1011, and the slider 1112 passes through the rectangular groove 1011. The slider 1112 is slidably connected to the guide column 1115. A spring 1116 is sleeved on the guide column 1115. Three groups of through holes 41 are opened on the correction plate 1114. The through holes 41 are slidably connected to the slide rod 42. One end of the slide rod 42 is fixedly connected to the conveying frame 101. A pin shaft 21 is installed on the slider 1112. An oblique groove 31 is opened at the lower end of the linkage plate 1113. The pin shaft 21 is located in the oblique groove 31. A roller 1031 for squeezing the movable plate 1111 is rotatably installed at one end of the driving arm 103.

[0028] Specifically, in the process of the above-mentioned support frame 106 lifting the steel pipe, since there is no steel pipe to limit it, the steel pipe will be offset due to the rapid movement of the support frame 106, making it impossible for the steel pipe to be placed between the two sets of limit plates 2. In the initial state, the spacing between the two sets of correction plates 1114 is equal to the spacing between the two sets of limit plates 2, and the spacing between the two sets of correction plates 1114 is equal to the length of the steel pipe. The driving arm 103 is perpendicular to the movable plate 1111, and the spring 1116 is in a compressed state. When the steel pipe needs to be loaded, the rotating driving arm 103 drives the roller 1031 to rotate, releasing the squeezing of the roller 1031 on the movable plate 1111, and under the rebound force of the spring 1116, the slider 1112 slides upward along the guide column 1115, and the movable plate 1111 moves with the slider 1112, and the slider 1112 drives the pin 21 Sliding along the oblique groove 31, under the guidance of the oblique groove 31, the two groups of linkage plates 1113 and the corresponding correction plates 1114 move backwards, and the through holes 41 on the correction plates 1114 slide along the slide rod 42, guiding the movement of the correction plates 1114, so that the spacing between the two groups of correction plates 1114 and the two groups of limit plates 2 is greater than the length of the steel pipe, so that the steel pipe can be smoothly placed between the two groups of limit plates 2. When the steel pipe is placed between the two groups of limit plates 2, the rotating driving arm 103 drives the roller 1031 to squeeze the movable plate 1111 again until the driving arm 103 is perpendicular to the movable plate 1111. In this process, the two groups of correction plates 1114 move toward each other, so that the spacing between the two groups of correction plates 1114 and the two groups of limit plates 2 is equal to the length of the steel pipe, thereby realizing the correction of the steel pipe position and ensuring the accuracy of steel pipe detection.

[0029] Working principle: Place the steel pipe between the two sets of limit plates 2 so that the end of the steel pipe is located on the two sets of rotating wheels 302, and the end face of the steel pipe is facing the synchronous disk 203. Then start the two sets of first motors 307. The first motors 307 drive the driving wheel 306 to rotate. The driving wheel 306 drives the two sets of pulleys 303 to rotate through the synchronous belt 304. The pulley 303 drives the synchronous shaft 301 to rotate together with the rotating wheel 302. The rotating wheel 302 drives the steel pipe to rotate. The end face of the steel pipe drives the synchronous disk 203 to rotate through friction. Then The motor drives the lead screw 5 to rotate, and the lead screw 5 drives the movable frame 6 together with the two sets of detection arms 7, the inner cavity scanner 8, and the outer wall scanner 9 to move toward the steel pipe, so that the inner cavity scanner 8 enters the interior of the steel pipe, and the outer wall scanner 9 passes through the avoidance groove 201 and moves along the outer wall of the steel pipe, so that the inner cavity scanner 8 and the outer wall scanner 9 respectively measure the inner ring and outer ring of the steel pipe until the inner cavity scanner 8 passes through the entire steel pipe. Then, the inner cavity scanner 8 and the outer wall scanner 9 are withdrawn, and the steel pipe is replaced and measured according to the same operation. When the steel pipe needs to be placed between the two sets of limit plates 2, the second motor 110 is started, and the second motor 110 drives the active wheel 109 to rotate. The active wheel 109 drives the two sets of synchronous wheels 107 to rotate through the transmission belt 108, and the synchronous wheel 107 drives the rotating shaft 102 together with the driving arm 103 to rotate. The driving arm 103 rotates the other set of driving arms 103 through the connecting shaft 104. The rotating driving arm 103 drives the connecting rod 105 to rotate the supporting frame 106. During the rotation of the supporting frame 106, the discharge chute 16 on the supporting frame 106 will hold up the steel pipe, so that the steel pipe moves forward, and the steel pipe is placed in the adjacent discharge chute 16 on the conveying frame 101 or between the two sets of limit plates 2 to realize the feeding of the steel pipe. After the steel pipe inspection is completed, the second motor 110 is started again, and the inspected steel pipe will be conveyed to the unloading rack 11 by the supporting rack 106 and rolls obliquely downward along the unloading rack 11 to realize the unloading of the steel pipe; When the steel pipe needs to be loaded, the rotating driving arm 103 drives the roller 1031 to rotate, releasing the squeeze of the roller 1031 on the movable plate 1111. Under the rebound force of the spring 1116, the slider 1112 slides upward along the guide column 1115. At the same time, the movable plate 1111 moves along with the slider 1112, and the slider 1112 drives the pin 21 to slide along the oblique groove 31. Under the guidance of the oblique groove 31, the two sets of linkage plates 1113 and the corresponding correction plates 1114 move in opposite directions, and the through hole 41 on the correction plate 1114 slides along the slide rod 42. , which guides the movement of the correction plate 1114, so that the distance between the two sets of correction plates 1114 and the two sets of limit plates 2 is greater than the length of the steel pipe, so that the steel pipe can be smoothly placed between the two sets of limit plates 2. When the steel pipe is placed between the two sets of limit plates 2, the rotating driving arm 103 drives the roller 1031 to squeeze the movable plate 1111 again until the driving arm 103 is perpendicular to the movable plate 1111. In this process, the two sets of correction plates 1114 move toward each other, so that the distance between the two sets of correction plates 1114 and the two sets of limit plates 2 is equal to the length of the steel pipe, thereby realizing the position correction of the steel pipe.

[0030] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A stainless steel pipe detection device, comprising a material rack (1), two sets of limit plates (2), and two sets of drive mechanisms (3), characterized in that: The two groups of limit plates (2) and the two groups of driving mechanisms (3) are symmetrically mounted on the material rack (1); a support frame (4) is provided at one end of the material rack (1); a lead screw (5) is rotatably mounted on the support frame (4); the lead screw (5) is screwed to a movable frame (6); two groups of detection arms (7) are mounted on the movable frame (6); and an inner cavity scanner (8) and an outer wall scanner (9) are respectively mounted on the two groups of detection arms (7); The driving mechanism (3) comprises two sets of synchronous shafts (301), and the synchronous shafts (301) are rotatably mounted on the material rack (1); A rotating wheel (302) mounted on one end of the synchronization shaft (301); A pulley (303) mounted on the other end of the synchronization shaft (301); A synchronous belt (304), wherein both sets of pulleys (303) are rotatably connected to the synchronous belt (304); A guide wheel (305) for guiding the synchronous belt (304) is rotatably mounted on the material rack (1); A first motor (307) is fixedly mounted on the material rack (1) and is used to drive a driving wheel (306), wherein the driving wheel (306) is rotatably connected to the synchronous belt (304).

2. The stainless steel pipe detection device according to claim 1, characterized in that: The limiting plate (2) is provided with an avoidance groove (201) for avoiding the detection arm (7), a bearing (202) is embedded in the limiting plate (2), and a synchronization disk (203) is installed in the bearing (202).

3. The stainless steel pipe detection device according to claim 2, characterized in that: A feeding mechanism (10) is provided behind the material rack (1), and the feeding mechanism (10) includes two sets of conveying racks (101); Two sets of rotating shafts (102) are rotatably mounted on the two sets of conveying racks (101); A driving arm (103) mounted on one end of the rotating shaft (102); Two sets of connecting shafts (104), with both ends of the connecting shafts (104) respectively connected to the two sets of driving arms (103); Four groups of connecting rods (105), wherein the lower ends of the connecting rods (105) are hinged to the connecting shafts (104), and the upper ends of the connecting rods (105) are hinged to the supporting racks (106).

4. The stainless steel pipe detection device according to claim 3, characterized in that: The other ends of the two sets of rotating shafts (102) are both equipped with synchronous wheels (107), and the two sets of synchronous wheels (107) are both engaged with transmission belts (108).

5. The stainless steel pipe detection device according to claim 4, characterized in that: The transmission belt (108) engages with a driving wheel (109), and a second motor (110) for driving the driving wheel (109) is installed on one side of a group of the conveying frames (101).

6. The stainless steel pipe detection device according to claim 5, characterized in that: Several groups of discharge troughs (16) for placing steel pipes are installed at equal distances on the conveying rack (101) and the supporting rack (106), and a discharge rack (11) for guiding the discharge of steel pipes is provided in front of the material rack (1).

7. The stainless steel pipe detection device according to claim 6, characterized in that: A correction mechanism (111) is provided between the two groups of conveying racks (101), and the correction mechanism (111) comprises a movable plate (1111), and the movable plate (1111) is movably installed between the two groups of conveying racks (101); Four groups of sliders (1112) are respectively installed at the four corners of the movable plate (1111); A linkage plate (1113) movably mounted on the slider (1112); A correction plate (1114) is fixedly connected to the linkage plate (1113), and one end of the correction plate (1114) is fixedly connected to the limit plate (2).

8. The stainless steel pipe detection device according to claim 7, characterized in that: Two groups of rectangular grooves (1011) are symmetrically provided on the conveying frame (101), guide pillars (1115) are fixedly installed in the rectangular grooves (1011), the sliders (1112) pass through the rectangular grooves (1011), the sliders (1112) are slidably connected to the guide pillars (1115), and the guide pillars (1115) are sleeved with springs (1116).

9. The stainless steel pipe detection device according to claim 8, characterized in that: The correction plate (1114) is provided with three groups of through holes (41), the through holes (41) are slidably connected to the slide rod (42), and one end of the slide rod (42) is fixedly connected to the conveying frame (101).

10. The stainless steel pipe detection device according to claim 9, characterized in that: A pin shaft (21) is mounted on the slider (1112), an oblique groove (31) is formed at the lower end of the linkage plate (1113), the pin shaft (21) is located in the oblique groove (31), and a roller (1031) for squeezing the movable plate (1111) is rotatably mounted on one end of the driving arm (103).

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