A steel pipe quality inspection device

Abstract

The invention discloses a steel pipe quality inspection device, which relates to the technical field of steel pipe inspection; the device comprises a base, on which a clamping piece is arranged for clamping the steel pipe; a detection piece is arranged on the top of the base, on which a positioning piece is arranged for maintaining stable lifting and lowering; the detection piece is also provided with a detection mechanism for detecting the roundness of the inner wall of the steel pipe; a weld detection mechanism for detecting the quality of welds on the inner and outer surfaces of the steel pipe; a hole detection mechanism for detecting the size of holes opened on the circumference of the steel pipe; and an end hole detection mechanism for detecting the size of holes at the end of the steel pipe for connection; the invention can complete multiple detection operations in one detection operation, has rich functions, and is convenient for detecting the inside of the steel pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe detection, and in particular to a steel pipe quality detection device. Background Art

[0002] A steel pipe is a part for conveying a medium, which can convey fluids and powdered solids, as well as gaseous media. As an economical steel material, steel pipes play a vital role in industrial development. For the production and processing of steel pipes, the production process is generally divided into seamless steel pipes and welded steel pipes, wherein the processing flow of welded steel pipes is generally as follows: bending and deforming the steel strip or steel plate into a circle, and then welding and fixing it, thereby forming a weld. In the existing process, after the steel pipe is formed, a quality inspection is generally performed, including dimensions, form and position tolerances, weld quality, hole dimensions, etc. For the inspection of steel pipes, in the prior art, when performing different types of inspections, the steel pipe needs to be converted to a work station, the number of clamping times is large, and the inspection function is single, which affects the inspection efficiency. On the other hand, the inspection inside the steel pipe is also an indispensable link, but due to the structural limitations of the steel pipe, the inspection inside the steel pipe is very inconvenient. Based on this, the present invention proposes a steel pipe quality inspection device. Summary of the invention

[0003] In view of the above technical problems, the present invention can complete multiple detection operations in one detection operation, has rich functions, and is convenient for detecting the inside of the steel pipe.

[0004] The technical scheme used in the present invention is: a steel pipe quality inspection device, including a base, a clamping piece is arranged on the base, for clamping the steel pipe, the clamping piece includes two slidably mounted matching slide rails, and a clamping rod is fixedly arranged on the matching slide rails; a detection piece is arranged on the top of the base, the detection piece includes a detection slide seat slidably mounted on the top of the base, a hanging frame is arranged on the detection slide seat by a sling, matching blocks are arranged on both sides of the hanging frame, the matching blocks are slidably matched with the matching slide rails, and the hanging frame slides on the matching blocks; a turning frame is rotatably arranged at the bottom of the hanging frame, and a detection ring is fixedly connected to the bottom end of the turning frame, the detection ring is composed of an inner ring and an outer ring fixedly connected, and a positioning piece is arranged on the inner ring and the outer ring, and the positioning piece includes a radially sliding arrangement on the inner ring and the outer ring A positioning rod on the ring, when the detection part is located inside the steel pipe, the positioning rod contacts the inner wall of the steel pipe, so that the detection part can be lifted and lowered smoothly; a rotating drum is rotatably installed on the inner ring, and a detection mechanism 1 is arranged at the end of the rotating drum for detecting the roundness of the inner wall of the steel pipe; the detection mechanism 1 includes a circular hole slide bar 1 radially slidably arranged on the circumference of the rotating drum, a circular hole slide bar 2 is slidably arranged on the circular hole slide bar 1, and a contact wheel is arranged at the end of the circular hole slide bar 2; a weld detection mechanism is arranged on the circumference of the rotating drum for detecting the quality of welds on the inner and outer surfaces of the steel pipe; a hole detection mechanism is arranged on the circumference of the rotating drum for detecting the size of holes opened on the circumference of the steel pipe; end hole detection mechanisms are respectively arranged at the upper and lower ends of the detection ring for detecting the size of holes used for connection at the end of the steel pipe.

[0005] Preferably, the clamping member includes a motor 1 mounted on the base via a fastener, and a screw rod 1 rotatably disposed on the base, wherein the motor 1 is used to drive the screw rod 1; the matching slide rail is connected to the screw rod 1 by a spiral pair.

[0006] Preferably, the detection component includes a second motor and a guide rod installed on the top of the base with fasteners, and a second screw rod rotatably installed on the top of the base, and the second motor is used to drive the second screw rod; the detection slide is slidingly connected to the guide rod, and the detection slide and the second screw rod form a spiral pair; a retractable and discharge motor is connected to the detection slide with fasteners, and a lifting drum is rotatably installed, and the retractable and discharge motor is used to drive the lifting drum; the lifting drum controls the height of the lifting frame through the sling.

[0007] Preferably, an electromagnetic adsorption block is provided on one end of the lifting frame facing the detection slide, which is used to be adsorbed on the detection slide; a flip motor is connected to the lifting frame by fasteners, and the flip motor is used to drive the flip frame; the bottom end of the flip frame is fixedly connected to the inner ring; an azimuth motor is connected to the inner ring by fasteners, an azimuth gear is provided on the output shaft of the azimuth motor, and a connecting gear ring is fixedly connected to the rotating drum, and the connecting gear ring and the azimuth gear constitute a gear pair to drive the rotating drum.

[0008] Preferably, an azimuth cylinder is rotatably mounted on the flip frame, a rotating shaft is fixedly connected to the end of the rotating cylinder facing the azimuth cylinder, a gear one is arranged on the end of the rotating shaft facing the azimuth cylinder, two gears two are rotatably mounted on the end face of the azimuth cylinder, one of the gears two forms a gear pair with the gear one, and the other gear two forms a gear pair with the azimuth cylinder; for the end hole position detection mechanisms at the upper and lower ends of the detection ring, one of the end hole position detection mechanisms is arranged on the azimuth cylinder, and the other end hole position detection mechanism is arranged on the rotating cylinder.

[0009] Preferably, the end hole position detection mechanism includes a control electric cylinder 1, a control electric cylinder 2 is arranged on the telescopic rod of the control electric cylinder 1, a contact round rod is rotatably arranged on the telescopic rod of the control electric cylinder 2, a pressure-sensitive sensor is arranged on the telescopic rod of the control electric cylinder 2, and a spring 1 is connected between the circumference of the contact round rod and the pressure-sensitive sensor on the telescopic rod of the control electric cylinder 2; the telescopic rod of the control electric cylinder 2 extends into the end hole of the steel pipe, the free end of the contact round rod contacts the inner wall of the hole, the spring 1 is compressed, and the pressure-sensitive sensor on the telescopic rod of the control electric cylinder 2 outputs a feedback pressure value to detect the size of the end hole; the end hole position detection mechanism is located on the azimuth cylinder, and the control electric cylinder 1 is arranged on the circumference of the azimuth cylinder; the end hole position detection mechanism is located on the rotating cylinder, and the control electric cylinder 1 is arranged on the circumference of the rotating cylinder.

[0010] Preferably, the positioning member includes a positioning control motor connected between the inner ring and the outer ring by fasteners, and a positioning control gear is arranged on the output shaft of the positioning control motor; a control gear ring is rotatably arranged on the inner ring, and the control gear ring and the positioning control gear constitute a gear pair to drive the control gear ring; a push rod is arranged on the circumference of the control gear ring; it is used to push the positioning rod, and a push wheel is arranged on one end of the positioning rod facing the inner ring, and the push wheel is pushed by the push rod to make the positioning rod slide; a spring 2 for providing elastic force is sleeved on the positioning rod.

[0011] Preferably, the weld detection mechanism comprises a control electric cylinder three arranged on the circumference of the rotating drum, and an ultrasonic detector is arranged on the telescopic rod of the control electric cylinder three, and the weld defects of the inner and outer surfaces of the steel pipe are detected by the ultrasonic detector.

[0012] Preferably, the detection mechanism 1 includes a roundness control motor connected to the end of the rotating drum with a fastener, a control frame is arranged on the output shaft of the roundness control motor, a connecting rod is rotatably mounted on the control frame, one end of the connecting rod is rotatably connected to the round hole slide bar 1 to control the movement of the round hole slide bar 1; a pressure-sensitive sensor is arranged inside the round hole slide bar 1, a spring 3 is connected between the end of the round hole slide bar 2 facing the round hole slide bar 1 and the pressure-sensitive sensor, when the contact wheel contacts the inner wall of the steel pipe and moves around the inner wall of the steel pipe, the round hole slide bar 2 is extended and retracted, the spring 3 is pressurized, and the pressure-sensitive sensor outputs a feedback pressure value to detect the roundness of the inner wall of the steel pipe.

[0013] Preferably, the hole detection mechanism includes a hole position detection electric cylinder 1 arranged on a rotating drum, a hole position slide is slidably arranged on the telescopic rod of the hole position detection electric cylinder 1, a hole position detection electric cylinder 2 is arranged on the hole position slide, and a contact rod is arranged on the telescopic rod of the hole position detection electric cylinder 2; a pressure-sensitive sensor is arranged on the telescopic rod of the hole position detection electric cylinder 1, a spring 4 is connected between the hole position slide and the pressure-sensitive sensor on the telescopic rod of the hole position detection electric cylinder 1, the contact rod is located on the inner side of the hole on the circumference of the steel pipe and contacts with the wall surface of the hole, and by rotating around the hole, the hole slide slides, the spring 4 is compressed, and the pressure-sensitive sensor on the telescopic rod of the hole position detection electric cylinder 1 outputs feedback of the pressure value to detect the hole size.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) In the present invention, the weld quality, roundness, end hole position and circumferential hole position of the steel pipe are inspected, and multiple inspection items are completed in one inspection operation, which saves time and effort and improves the inspection efficiency; (2) In the present invention, the inspection piece enters the interior of the steel pipe in a hoisting manner and performs quality inspection, which avoids the limitations brought by the closed structure of the steel pipe and brings convenience to the inspection operation; (3) In the present invention, the inspection piece can be stably lifted and lowered on the mating slide rail by the mating block, thereby completing the quality inspection of the outer surface of the steel pipe. The movement in the hoisting manner not only solves the problem of inconvenience in inspecting the interior of the steel pipe, but also can complete the inspection operation of the outer surface of the steel pipe at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure installation of the present invention.

[0016] Figure 2 It is a schematic diagram of the detection element of the present invention.

[0017] Figure 3 It is a schematic diagram of the installation of the matching block of the present invention.

[0018] Figure 4 This is a schematic diagram of the installation of the detection ring of the present invention.

[0019] Figure 5 It is a schematic diagram of the installation of the end hole position detection mechanism of the present invention.

[0020] Figure 6 For the present invention Figure 5 Enlarged view of the area marked A in the middle.

[0021] Figure 7 It is a schematic diagram of the installation of the rotary drum of the present invention.

[0022] Figure 8 It is a schematic structural diagram of the positioning member of the present invention.

[0023] Fig. 9 It is a schematic diagram of the detection mechanism 1 of the present invention.

[0024] Fig.10 It is a schematic diagram of the installation of the hole detection mechanism of the present invention.

[0025] Fig.11 It is a schematic diagram of the local structure of the hole detection mechanism of the present invention.

[0026] Figure numerals: 1-base; 2-motor 1; 3-screw rod 1; 4-matching slide rail; 5-clamping rod; 6-motor 2; 7-screw rod 2; 8-guide rod; 9-detection slide seat; 10-hoisting reel; 11-receiving and discharging motor; 12-hoisting frame; 1201-electromagnetic adsorption block; 13-matching block; 14-turning motor; 15-turning frame; 16-inner ring; 17-outer ring; 18-rotating drum; 19-rotating shaft; 20-gear 1; 21-azimuth cylinder; 22-control electric cylinder 1; 23-control electric cylinder 2; 24-gear 2; 25-contact round rod; 26-spring 1; 2 7-control electric cylinder three; 28-ultrasonic detector; 29-connecting gear ring; 30-azimuth motor; 31-azimuth gear; 32-positioning rod; 33-spring two; 34-push wheel; 35-control gear ring; 36-push rod; 37-positioning control motor; 38-positioning control gear; 39-roundness control motor; 40-control frame; 41-connecting rod; 42-circular hole slide bar one; 43-circular hole slide bar two; 44-contact wheel; 45-spring three; 46-hole position detection electric cylinder one; 47-hole position detection electric cylinder two; 48-contact rod; 49-hole position slide seat; 50-spring four. DETAILED DESCRIPTION

[0027] The present invention will be specifically described below in conjunction with the accompanying drawings: Figures 1 to 11 As shown, a clamping member is provided on the base 1 for clamping the steel pipe, and the clamping member includes two slidably mounted matching rails 4, on which a clamping rod 5 is fixedly arranged; the clamping member includes a motor 2 mounted on the base 1 through a fastener, and a screw rod 3 rotatably arranged on the base 1, on which two sections of threads with different rotation directions are arranged, and the motor 2 is used to drive the screw rod 3; the matching rails 4 are connected to the screw rod 3 by a spiral pair.

[0028] A detection member is provided on the top of the base 1, and the detection member includes a detection slide 9 slidably mounted on the top of the base 1, a hoisting frame 12 is hoisted on the detection slide 9 by a sling, and matching blocks 13 are provided on both sides of the hoisting frame 12, the matching blocks 13 are slidably matched with the matching slide rails 4, and the hoisting frame 12 slides on the matching blocks 13; the detection member also includes a motor 2 6 and a guide rod 8 mounted on the top of the base 1 by fasteners, and a screw rod 2 7 rotatably mounted on the top of the base 1, and the motor 2 6 is used to drive the screw rod 2 7; the detection slide 9 is slidably connected to the guide rod 8, and the detection slide 9 and the screw rod 2 7 form a spiral pair; a retractable discharge motor 11 is connected to the detection slide 9 by fasteners, and a hoisting drum 10 is rotatably mounted, and the retractable discharge motor 11 is used to drive the hoisting drum 10; the hoisting drum 10 controls the hoisting by the sling. The height of the frame 12; a flip frame 15 is rotatably arranged at the bottom of the hanging frame 12, and an electromagnetic adsorption block 1201 is arranged on the end of the hanging frame 12 facing the detection slide 9, which is used to be adsorbed on the detection slide 9; a flip motor 14 is connected to the hanging frame 12 with a fastener, and the flip motor 14 is used to drive the flip frame 15; a detection ring is fixedly connected to the bottom end of the flip frame 15, and the detection ring is composed of an inner ring 16 and an outer ring 17 fixedly connected, the bottom end of the flip frame 15 is fixedly connected to the inner ring 16, and a rotating drum 18 is rotatably installed on the inner ring 16, and an azimuth motor 30 is connected to the inner ring 16 with fasteners, and an azimuth gear 31 is arranged on the output shaft of the azimuth motor 30, and a connecting gear ring 29 is fixedly connected to the rotating drum 18, and the connecting gear ring 29 and the azimuth gear 31 constitute a gear pair to drive the rotating drum 18.

[0029] An azimuth cylinder 21 is rotatably mounted on the flip frame 15, a rotating shaft 19 is fixedly connected to the end of the rotating cylinder 18 facing the azimuth cylinder 21, a gear 1 20 is arranged on one end of the rotating shaft 19 facing the azimuth cylinder 21, two gears 24 of the same specification are rotatably mounted on the end face of the azimuth cylinder 21, the two gears 24 are fixedly connected by a rotating shaft, the rotating shaft is rotatably mounted on the end face of the azimuth cylinder 21, one of the gears 24 and the gear 1 20 form a gear pair, and the other gear 24 and the azimuth cylinder 21 form a gear pair; end hole position detection mechanisms are respectively arranged at the upper and lower ends of the detection ring, for detecting the hole size of the end of the steel pipe for connection; for the end hole position detection mechanisms at the upper and lower ends of the detection ring, one of the end hole position detection mechanisms is arranged on the azimuth cylinder 21, and the other end hole position detection mechanism is arranged on the rotating cylinder 18.

[0030] The end hole position detection mechanism includes a control electric cylinder 1 22, a control electric cylinder 2 23 is arranged on the telescopic rod of the control electric cylinder 1 22, a contact round rod 25 is rotatably arranged on the telescopic rod of the control electric cylinder 23, a pressure-sensitive sensor is arranged on the telescopic rod of the control electric cylinder 23, and a spring 1 26 is connected between the circumference of the contact round rod 25 and the pressure-sensitive sensor on the telescopic rod of the control electric cylinder 23; the telescopic rod of the control electric cylinder 23 extends into the end hole of the steel pipe, the free end of the contact round rod 25 contacts the inner wall of the hole, the spring 1 26 is compressed, and the pressure-sensitive sensor on the telescopic rod of the control electric cylinder 23 outputs a feedback pressure value to detect the end hole size; the end hole position detection mechanism is located on the azimuth cylinder 21, and the control electric cylinder 1 22 is arranged on the circumference of the azimuth cylinder 21; the end hole position detection mechanism is located on the rotating drum 18, and the control electric cylinder 1 22 is arranged on the circumference of the rotating drum 18.

[0031] The inner ring 16 and the outer ring 17 are provided with positioning members, which include positioning rods 32 radially slidably arranged on the inner ring 16 and the outer ring 17. When the detection member is located inside the steel pipe, the positioning rod 32 contacts the inner wall of the steel pipe to make the detection member rise and fall smoothly; the positioning member includes a positioning control motor 37 connected between the inner ring 16 and the outer ring 17 by fasteners, and a positioning control gear 38 is arranged on the output shaft of the positioning control motor 37; a control gear ring 35 is rotatably arranged on the inner ring 16, and the control gear ring 35 and the positioning control gear 38 constitute a gear pair to drive the control gear ring 35; a push rod 36 is arranged on the circumference of the control gear ring 35; it is used to push the positioning rod 32, and a push wheel 34 is arranged on the end of the positioning rod 32 facing the inner ring 16, and the push wheel 34 is pushed by the push rod 36 to make the positioning rod 32 slide; a spring 33 for providing elastic force is sleeved on the positioning rod 32.

[0032] The end of the rotating drum 18 is provided with a detection mechanism 1 for detecting the roundness of the inner wall of the steel pipe; the detection mechanism 1 includes a circular hole slide rod 1 42 radially slidably arranged on the circumference of the rotating drum 18, a circular hole slide rod 2 43 is slidably arranged on the circular hole slide rod 1 42, and a contact wheel 44 is arranged at the end of the circular hole slide rod 2 43; the detection mechanism 1 also includes a roundness control motor 39 connected to the end of the rotating drum 18 by a fastener, and a control frame 40 is arranged on the output shaft of the circularity control motor 39, and a control frame 40 is rotatably mounted on the control frame 40. There is a connecting rod 41, one end of which is rotationally connected to a round hole slide bar 42 to control the movement of the round hole slide bar 42; a pressure-sensitive sensor is arranged inside the round hole slide bar 42, and a spring three 45 is connected between one end of a round hole slide bar 43 facing the round hole slide bar 42 and the pressure-sensitive sensor, and when the contact wheel 44 contacts the inner wall of the steel pipe and moves around the inner wall of the steel pipe, the round hole slide bar 43 is extended and retracted, and the spring three 45 is compressed, and the pressure-sensitive sensor outputs a feedback pressure value to detect the roundness of the inner wall of the steel pipe.

[0033] A weld inspection mechanism is arranged on the circumference of the rotating drum 18 for inspecting the weld quality on the inner and outer surfaces of the steel pipe; the visual inspection mechanism includes a control electric cylinder 3 27 arranged on the circumference of the rotating drum 18, and an ultrasonic detector 28 is arranged on the telescopic rod of the control electric cylinder 3 27, and the weld defects on the inner and outer surfaces of the steel pipe are inspected by the ultrasonic detector 28.

[0034] A hole detection mechanism is provided on the circumference of the rotating drum 18 for detecting the size of the holes opened on the circumference of the steel pipe; the hole detection mechanism comprises a hole detection electric cylinder 1 46 provided on the rotating drum 18, a hole position slide 49 is slidably provided on the telescopic rod of the hole position detection electric cylinder 1 46, a hole position detection electric cylinder 2 47 is provided on the hole position slide 49, and a contact rod 48 is provided on the telescopic rod of the hole position detection electric cylinder 2 47; a pressure-sensitive sensor is provided on the telescopic rod of the hole position detection electric cylinder 1 46, a spring 40 is connected between the hole position slide 49 and the pressure-sensitive sensor on the telescopic rod of the hole position detection electric cylinder 1 46, the contact rod 48 is located on the inner side of the hole on the circumference of the steel pipe and contacts with the wall of the hole, and by rotating around the hole, the hole position slide 49 slides, the spring 450 is compressed, and the pressure-sensitive sensor on the telescopic rod of the hole position detection electric cylinder 1 46 outputs a feedback pressure value to detect the hole size.

[0035] Working principle: This embodiment detects the weld quality, roundness, end hole position, and circumferential hole position of the steel pipe, and completes multiple detection operations in one clamping operation; specifically, the steel pipe is clamped and installed on the clamping rod 5, that is, the motor 2 works, the screw 3 rotates, and the slide rail 4 slides, and the steel pipe is clamped and fixed by the clamping rod 5.

[0036] By operating the motor 2 6 , the screw rod 2 7 rotates, causing the detection slide 9 to slide and the detection component to be located on the top of the steel pipe; by operating the retractable and discharging motor 11 , the hoisting drum 10 rotates, and the hoisting frame 12 is retracted and released through the sling to adjust the height. The electromagnetic adsorption block 1201 on the hoisting frame 12 can fix the hoisting frame 12 at the bottom of the detection slide 9 to ensure stability. When the hoisting frame 12 is controlled to move, the electromagnetic adsorption block 1201 releases the adsorption state.

[0037] During the inspection, the end hole position of the steel pipe is inspected first. Specifically, the inspection ring enters the interior of the steel pipe, and the end hole position detection mechanism arranged on the azimuth cylinder 21 is located outside the steel pipe and supported and fixed by the positioning piece, that is, the positioning control motor 37 works, and under the gear transmission, the gear ring 35 is controlled to rotate, and the push rod 36 pushes the push wheel 34, so that the positioning rod 32 slides and the spring 2 33 is compressed; the positioning rod 32 contacts the inner wall of the steel pipe to complete the limit, ensure stability, and will not shake; then the azimuth motor 30 works, and under the gear transmission, the connecting gear ring 29 and the rotating drum 18 rotate, and then the rotating shaft 19 and the gear 20 rotate, and the gear 2 is driven. The second 24 and the azimuth cylinder 21 rotate to correct the circumferential position of the control electric cylinder 1 22, that is, to correct the position of the end hole detection mechanism to the first end hole; then the radial position is adjusted by controlling the electric cylinder 1 22, and the control electric cylinder 2 23 works, so that the contact round rod 25 enters the end hole, the free end of the contact round rod 25 contacts the inner wall of the hole, the spring 1 26 is compressed, and the pressure-sensitive sensor on the telescopic rod of the control electric cylinder 2 23 outputs the feedback pressure value, and the output feedback signal is analyzed by the analysis system to detect the size of the end hole; then the circumferential position of the control electric cylinder 1 22 is adjusted in turn to complete the detection of the end holes of the steel pipe one by one.

[0038] When performing roundness detection, the positioning rod 32 is continuously in contact with the inner wall of the steel pipe so that the detection part remains stable during the descent process. The rotating drum 18 is controlled to rotate so that the ultrasonic detector 28 is aligned with the weld. The electric cylinder 27 is controlled to adjust the radial position of the ultrasonic detector 28. Ultrasonic flaw detection is performed through the ultrasonic detector 28 to detect the quality of the weld on the inner wall of the steel pipe.

[0039] When the roundness of the inner wall of the steel pipe is detected, the roundness control motor 39 works, the azimuth motor 30 rotates, and under the connecting action of the connecting rod 41, the circular hole slide bar 1 42 slides, and finally the contact wheel 44 contacts the inner wall of the steel pipe, and then the rotating drum 18 is controlled to rotate, the contact wheel 44 is close to the inner wall of the steel pipe, and rotates around the inner wall of the steel pipe, and the circular hole slide bar 2 43 is extended and retracted to adapt to the curvature of the inner wall. The spring 3 45 is pressurized, and the pressure-sensitive sensor outputs feedback pressure values. At different heights, the contact wheel 44 rotates around the inner wall of the steel pipe, and the feedback signal is output to the analysis system for data analysis to detect the roundness of the inner wall of the steel pipe.

[0040] After the detection piece reaches the bottom area of ​​the steel pipe, the end hole position detection mechanism arranged on the rotating drum 18 is located outside the steel pipe. According to the above-mentioned detection process for the end hole position, the end hole position detection mechanism arranged on the rotating drum 18 detects the end hole position on the other end face of the steel pipe, which can reduce the number of clamping times.

[0041] When inspecting the quality of the weld on the outer surface of the steel pipe, the inspection piece is lifted above the steel pipe, the weld position of the steel pipe is adjusted toward the position of the matching slide rail 4, the inspection slide 9 is moved above the matching slide rail 4, and the matching block 13 is matched with the matching slide rail 4 by retracting and releasing the inspection piece, so that the inspection piece can be stably lifted and lowered on the matching slide rail 4. Specifically, the ultrasonic detector 28 is directed toward the weld of the steel pipe, and ultrasonic flaw detection is performed during the lifting process to complete the weld quality inspection.

[0042] When detecting the circumferential hole position of the steel pipe, the circumferential hole position of the steel pipe is oriented toward the matching slide rail 4, and then the flip motor 14 is operated to flip the flip frame 15, so that the hole detection mechanism is oriented toward the circumferential hole position of the steel pipe. Specifically, the radial position of the hole detection electric cylinder 47 is controlled by the hole detection electric cylinder 1 46, and the hole detection electric cylinder 2 47 controls the contact rod 48 to move to the inner side of the circumferential hole position of the steel pipe and contact the hole position wall surface. By rotating around the hole position, the hole position slide seat 49 slides, the spring four 50 is compressed, and the pressure-sensitive sensor on the telescopic rod of the hole detection electric cylinder 1 46 outputs feedback pressure value, and the analysis system analyzes the feedback signal to complete the hole size detection.

Claims

1. A steel pipe quality inspection device, comprising a base (1), the base (1) being provided with a clamping member for clamping the steel pipe, the clamping member comprising two slidably mounted matching slide rails (4); characterized in that: A detection member is arranged on the top of the base (1), and the detection member comprises a detection slide seat (9) slidably mounted on the top of the base (1); a hanging frame (12) is arranged on the detection slide seat (9) by a hanging rope, and matching blocks (13) are arranged on both sides of the hanging frame (12); a turning frame (15) is rotatably arranged at the bottom of the hanging frame (12), and a detection ring is fixedly connected to the bottom end of the turning frame (15), and the detection ring is composed of an inner ring (16) and an outer ring (17) fixedly connected, and a positioning member is arranged on the inner ring (16) and the outer ring (17), and the positioning member comprises a radially sliding member arranged on the inner ring (16) and the outer ring (17). Positioning rods (32) are provided on the inner ring (16) and the outer ring (17); a rotating drum (18) is rotatably mounted on the inner ring (16); a detection mechanism 1 is provided at the end of the rotating drum (18) for detecting the roundness of the inner wall of the steel pipe; a weld detection mechanism is provided on the circumference of the rotating drum (18) for detecting the quality of the welds on the inner and outer surfaces of the steel pipe; a hole detection mechanism is provided on the circumference of the rotating drum (18) for detecting the size of the holes opened on the circumference of the steel pipe; end hole detection mechanisms are provided at the upper and lower ends of the detection ring respectively for detecting the size of the holes used for connection at the end of the steel pipe; The clamping member comprises a motor (2) mounted on the base (1) via a fastener, and a screw (3) rotatably arranged on the base (1), the motor (2) being used to drive the screw (3); a matching slide rail (4) being connected to the screw (3) via a spiral pair, and a clamping rod (5) being fixedly arranged on the matching slide rail (4); The detection component comprises a second motor (6) and a guide rod (8) mounted on the top of the base (1) by fasteners, and a second screw rod (7) rotatably mounted on the top of the base (1), wherein the second motor (6) is used to drive the second screw rod (7); the detection slide (9) is slidably connected to the guide rod (8), and the detection slide (9) and the second screw rod (7) form a spiral pair; a retractable motor (11) is connected to the detection slide (9) by fasteners, and a hoisting drum (10) is rotatably mounted, wherein the retractable motor (11) is used to drive the hoisting drum (10); the hoisting drum (10) controls the height of the hoisting frame (12) through a sling; An electromagnetic adsorption block (1201) is provided on one end of the hanging frame (12) facing the detection slide (9) for adsorbing on the detection slide (9); a flip motor (14) is connected to the hanging frame (12) by a fastener, and the flip motor (14) is used to drive the flip frame (15); the bottom end of the flip frame (15) is fixedly connected to the inner ring (16); an azimuth motor (30) is connected to the inner ring (16) by a fastener, and an azimuth gear (31) is provided on the output shaft of the azimuth motor (30); a connecting gear ring (29) is fixedly connected to the rotating drum (18), and the connecting gear ring (29) and the azimuth gear (31) form a gear pair to drive the rotating drum (18); An azimuth cylinder (21) is rotatably mounted on the turning frame (15); a rotating shaft (19) is fixedly connected to the end of the rotating cylinder (18) facing the azimuth cylinder (21); a gear 1 (20) is arranged on one end of the rotating shaft (19) facing the azimuth cylinder (21); two gear 2s (24) are rotatably mounted on the end surface of the azimuth cylinder (21); one of the gear 2s (24) and the gear 1 (20) form a gear pair, and the other gear 2 (24) and the azimuth cylinder (21) form a gear pair; as for the end hole position detection mechanisms at the upper and lower ends of the detection ring, one of the end hole position detection mechanisms is arranged on the azimuth cylinder (21), and the other end hole position detection mechanism is arranged on the rotating cylinder (18); The end hole position detection mechanism comprises a control electric cylinder 1 (22), a control electric cylinder 2 (23) is arranged on the telescopic rod of the control electric cylinder 1 (22), a contact round rod (25) is rotatably arranged on the telescopic rod of the control electric cylinder 2 (23), a pressure-sensitive sensor is arranged on the telescopic rod of the control electric cylinder 2 (23), and a spring 1 (26) is connected between the circumference of the contact round rod (25) and the pressure-sensitive sensor on the telescopic rod of the control electric cylinder 2 (23); the telescopic rod of the control electric cylinder 2 (23) extends into At the end hole of the steel pipe, the free end of the contact round rod (25) contacts the inner wall of the hole, the spring 1 (26) is compressed, and the pressure-sensitive sensor on the telescopic rod of the control electric cylinder 2 (23) outputs a feedback pressure value to detect the size of the end hole; the end hole detection mechanism is located on the azimuth cylinder (21), and the control electric cylinder 1 (22) is arranged on the circumference of the azimuth cylinder (21); the end hole detection mechanism is located on the rotating cylinder (18), and the control electric cylinder 1 (22) is arranged on the circumference of the rotating cylinder (18); The positioning member comprises a positioning control motor (37) connected between the inner ring (16) and the outer ring (17) by a fastener, and a positioning control gear (38) is arranged on the output shaft of the positioning control motor (37); a control gear ring (35) is rotatably arranged on the inner ring (16), and the control gear ring (35) and the positioning control gear (38) form a gear pair to drive the control gear ring (35); a push rod (36) is arranged on the circumference of the control gear ring (35) for pushing the positioning rod (32), and a push wheel (34) is arranged on one end of the positioning rod (32) facing the inner ring (16), and the push wheel (34) is pushed by the push rod (36) to make the positioning rod (32) slide; a spring (33) for providing elastic force is sleeved on the positioning rod (32); The weld inspection mechanism comprises a control electric cylinder three (27) arranged on the circumference of the rotating drum (18), and an ultrasonic detector (28) is arranged on the telescopic rod of the control electric cylinder three (27), and the weld defects on the inner and outer surfaces of the steel pipe are inspected by the ultrasonic detector (28); The hole detection mechanism comprises a hole position detection electric cylinder (46) arranged on a rotating drum (18); a hole position slide seat (49) is slidably arranged on the telescopic rod of the hole position detection electric cylinder (46); a hole position detection electric cylinder (47) is arranged on the hole position slide seat (49); and a contact rod (48) is arranged on the telescopic rod of the hole position detection electric cylinder (47); a pressure-sensitive sensor is arranged on the telescopic rod of the hole position detection electric cylinder (46); a spring (4) (50) is connected between the hole position slide seat (49) and the pressure-sensitive sensor on the telescopic rod of the hole position detection electric cylinder (46); the contact rod (48) is located on the inner side of the hole position on the circumference of the steel pipe and contacts the wall surface of the hole position; by rotating around the hole position, the hole position slide seat (49) slides, the spring (4) (50) is compressed, and the pressure-sensitive sensor on the telescopic rod of the hole position detection electric cylinder (46) outputs a feedback pressure value to detect the hole size.

2. A steel pipe quality inspection device according to claim 1, characterized in that: The detection mechanism 1 comprises a circular hole slide rod 1 (42) radially slidably arranged on the circumference of the rotating drum (18), a circular hole slide rod 2 (43) slidably arranged on the circular hole slide rod 1 (42), and a contact wheel (44) is arranged at the end of the circular hole slide rod 2 (43); the detection mechanism 1 also comprises a roundness control motor (39) connected to the end of the rotating drum (18) by a fastener, a control frame (40) is arranged on the output shaft of the circularness control motor (39), a connecting rod (41) is rotatably mounted on the control frame (40), and the connecting rod (41) ) is rotatably connected to the circular hole slide bar 1 (42) to control the movement of the circular hole slide bar 1 (42); a pressure-sensitive sensor is arranged inside the circular hole slide bar 1 (42); a spring 3 (45) is connected between the end of the circular hole slide bar 2 (43) facing the circular hole slide bar 1 (42) and the pressure-sensitive sensor; when the contact wheel (44) contacts the inner wall of the steel pipe and moves around the inner wall of the steel pipe, the circular hole slide bar 2 (43) is extended and retracted, the spring 3 (45) is compressed, and the pressure-sensitive sensor outputs a feedback pressure value to detect the roundness of the inner wall of the steel pipe.

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