Online detection device and detection method for surface quality of hot-rolled steel plate

Abstract

The invention discloses a hot-rolled steel plate surface quality on-line detection device and method, and the device comprises a detection frame, a product conveying device disposed on the top of the detection frame, a detection box disposed on the top of the detection frame, and a detection groove disposed on the surface of the detection box. A detection control mechanism is arranged in the detection box to achieve detection operation of the top and the side face of a product. The invention relates to the technical field of steel plate quality online detection. According to the online detection device and method for the surface quality of the hot-rolled steel plate, the detection control mechanism is arranged, and a driving motor is used for driving a rotating plate to rotate, so that a long-strip-shaped groove controls an extension column to move in a concave groove, and synchronous detection operation of a collection sensor on the side face and the top face of a product is achieved; in this way, multi-directional data acquisition is achieved, the actual misjudgment influence caused by the fact that an adhesive exists on the surface can be effectively avoided, and therefore the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of on-line detection of steel plate quality, and in particular to an on-line detection device and method for the surface quality of hot-rolled steel plates. Background Art

[0002] During the heating process of the steel billet, if the temperature or speed is not properly controlled, it may cause local overheating or decarburization, reduce the plasticity of the steel, and cause surface cracking during rolling.

[0003] The reference patent name is: An online measuring device for determining the yield strength and tensile strength of low-carbon steel cold-rolled thin plates (patent publication number: CN114113294A, patent publication date: 2022-03-01), including a detection sensor unit, and a computing and control unit connected to the detection sensor unit through a data communication interface. The detection sensor unit includes an electromagnetic detection unit and a rangefinder. The electromagnetic parameters of the strip and the distance between the electromagnetic detection unit and the lower surface of the strip are detected, and the detected electromagnetic parameters and distance data are sent to the computing and control unit. The computing and control unit includes a calculation module, which calculates the yield strength and tensile strength of the strip according to the electromagnetic parameter data and the distance data, realizing real-time online detection of indicators such as tensile strength and yield strength of the cold-rolled strip, and realizing continuous detection, classification and recording of steel plate production quality, which will play a very positive role in improving production efficiency, product quality and product competitiveness.

[0004] Based on the above documents, during the production process of existing hot-rolled steel plates, there will be some defective products with cracks on their surfaces. The cracks exist not only on the surface of the steel plates, but also on the sides of the steel plates. The current detection operation fails to detect completely, and when detecting products of different sizes, the equipment fails to adjust to adapt to detection of different sizes. For this reason, the present invention provides an online detection device and method for the surface quality of hot-rolled steel plates. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an online detection device and method for the surface quality of hot-rolled steel plates, which solves the problem that during the production process of the existing hot-rolled steel plates, there will be some defective products with cracks on the surface. The cracks exist not only on the surface of the steel plates, but also on the sides of the steel plates. The current detection operation cannot detect completely, and when detecting products of different sizes, the equipment cannot be adjusted to adapt to the detection of different sizes.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an online detection device for the surface quality of hot-rolled steel plates, comprising a detection frame, a product conveying device is arranged on the top of the detection frame, and a detection box is installed on the top of the detection frame, and a detection slot is opened on the surface of the detection box. The detection box is provided with a detection control mechanism to realize the detection operation of the top and side of the product, and the detection control mechanism includes:

[0007] The detection part is arranged in the detection box, including a convex plate fixedly installed in the inner cavity of the detection box and located above the detection slot, an L-shaped plate and a concave plate are symmetrically slidable on the left and right sides of the surface of the convex plate, and the surfaces of the L-shaped plate and the concave plate are provided with interconnected grooves that are combined to form a concave slot, a driving member is used to make the rotating plate reciprocate on one side of the convex plate, and a control member is used to make the square plate move on the surface of the rotating plate, and then an extension column is rotatably installed on one side of the square plate to slide in the concave slot, and a collection sensor is arranged at the bottom of the square plate to extend into the detection slot to collect data on the product surface;

[0008] The adjustment part, the top of the two L-shaped plates is provided with a horizontal moving unit to realize the relative or opposite movement of the two L-shaped plates, and the vertical movement of the L-shaped plate and the concave plate on the same side is realized by the vertical moving unit.

[0009] Preferably, the driving member includes a driving motor installed on the left side of the detection box, and one end of the output shaft of the driving motor is fixed with the driving shaft through a coupling, and one end of the driving shaft passes through the convex plate and the detection box and extends to the interior of the detection box and is connected and fixed to the bottom of the surface of the rotating plate.

[0010] Preferably, the control element comprises:

[0011] The vertical plate is connected and fixed to the bottom of the square plate, and the surface of the vertical plate can slide relative to the surface of the convex plate by using a sliding assembly;

[0012] The concave frame is fixedly mounted at the bottom end of the vertical plate, and a secondary shaft is rotatably mounted in the groove of the concave frame, and the top connection of the acquisition sensor is fixedly penetrated with the surface of the secondary shaft;

[0013] A long groove is provided on the surface of the rotating plate, and the rotation of the rotating plate controls the extension column to move along the concave groove through the long groove.

[0014] Preferably, the sliding assembly comprises:

[0015] The sliding block has a wrapping groove on one side close to the convex plate, a sliding bar is installed on one side of the convex plate close to the sliding block, and the wrapping groove wraps the sliding bar and realizes horizontal sliding of the sliding block;

[0016] The fixed block is connected and fixed on a side of the sliding block away from the convex plate, and the vertical plate penetrates the fixed block and can slide vertically relative to the fixed block.

[0017] Preferably, the auxiliary driving shaft and the extension column are provided with linkage parts for controlling the rotation of the acquisition sensor, and the linkage parts include:

[0018] A horizontal rack is slidably arranged at the level of the concave grooves corresponding to the two L-shaped plates, and a gear is fixed at the end of the extension column;

[0019] A pair of transmission wheels are provided, which are respectively fixedly mounted on the auxiliary drive shaft and the extended ends of the extension column, and the surface of the transmission wheel realizes the synchronous rotation of the auxiliary drive shaft and the extension column through a transmission belt, and a protective shell is installed on the surface of the square plate and the concave frame.

[0020] Preferably, the horizontal moving unit comprises:

[0021] The movable column is fixedly mounted on the end surface of the rear L-shaped plate, and a square groove adapted to the movable column is opened on the end surface of the front L-shaped plate;

[0022] The limit columns are symmetrically fixed on the left and right sides of the moving column, and limit grooves adapted to slide with the limit columns are opened on the left and right opposite sides of the square groove, and the relative L-shaped plates are driven by the screw to perform horizontal movement operation.

[0023] Preferably, the screw member comprises:

[0024] The bracket plate is installed on the front side of the front L-shaped plate, and a control motor is installed on the top, and the output shaft of the control motor is fixed with a bidirectional threaded rod through a coupling;

[0025] The convex blocks are symmetrically installed on the top of the two L-shaped plates. The two sections of the threads of the two-way threaded rod are respectively threadedly connected to the two convex blocks. A moving groove is opened at the bottom of the concave plate. A moving bar is installed on the top of the convex plate and slides inside the moving groove. The driving of the two-way threaded rod enables the L-shaped plate and the concave plate to move horizontally as a whole under the limitation of the moving groove and the moving bar.

[0026] Preferably, the vertical movement unit comprises:

[0027] The inclined block is fixedly mounted on the top end surface of the concave plate, and one side of the inclined block opposite to the surface groove is an inclined surface;

[0028] The abutment member is abutted when the extension column moves from the horizontal position of the concave groove to the vertical position, and contacts with the oblique block to make the upper L-shaped plate move vertically.

[0029] Preferably, the abutment member comprises:

[0030] The moving plate has a moving block installed on its surface, and the inclined surface of the moving block is parallel to and opposite to the inclined surface of the inclined block, and the inside of the moving plate is connected to a moving plate in a vertical sliding manner, an L-shaped rack is fixedly installed on the surface of the moving plate and extends to the outside of the moving plate, and telescopic springs are symmetrically installed on the top of the moving plate and the top of the inner cavity of the moving plate;

[0031] The penetration block is located inside the L-shaped plate and has a placement groove opposite to the abutment plate. The penetration block extends into the placement groove, and an abutment spring is installed between the penetration block and the opposite side of the placement groove.

[0032] The present invention also discloses a detection method of an online detection device for the surface quality of a hot-rolled steel plate, which specifically comprises the following steps:

[0033] S1. According to the size of the product to be tested, the adjustment unit is used to adjust the moving distance during testing;

[0034] S2. Use the conveying device on the testing rack to transport the testing product from the channel of the testing tank and implement the stop testing operation;

[0035] S3. Use the detection unit to drive the collection sensor located on the side of the detection product to move to the top surface, and then move to the other side to collect data, and then transmit it to the control terminal to realize data analysis to determine whether there is a crack.

[0036] The present invention provides an online detection device and method for the surface quality of hot-rolled steel plates. Compared with the prior art, the device and method have the following beneficial effects:

[0037] (1) The hot-rolled steel plate surface quality online detection device and detection method are provided with a detection control mechanism, and a driving motor is used to drive the rotation of the rotating plate, so as to realize the movement operation of the long groove control extension column in the concave groove, thereby realizing the synchronous detection operation of the side and top surfaces of the product by the collection sensor, thereby not only realizing multi-directional data collection, but also effectively avoiding the actual misjudgment caused by the presence of adhesion on the surface, thereby improving the efficiency and accuracy of the detection.

[0038] (2) The device and method for online detection of the surface quality of hot-rolled steel plates are provided with a linkage member, that is, when the extension column is located in the concave groove and moves from the horizontal position to the vertical position, until it moves to the upper part of the vertical position, the gear on the extension column contacts and meshes with the horizontal rack provided at the lower horizontal position in the groove, so that the gear rotates. At this time, the extension column drives the auxiliary shaft to rotate synchronously through the transmission of the transmission wheel and the transmission belt, and then the rotation of the auxiliary shaft realizes the 90° turning of the collection sensor inside the concave frame, completes the adjustment of the collection direction of the collection sensor, thereby realizing the synchronous linkage with the moving process, and facilitating data collection.

[0039] (3) The hot-rolled steel plate surface quality online detection device and detection method are provided with a horizontal moving unit, and the start control motor drives the bidirectional threaded rod to rotate, thereby driving the L-shaped plate connected below the convex block to perform relative or opposite horizontal movement operations, and the moving column and the limit column between the relative L-shaped plates slide in the square groove and the limit groove, so as to perform adaptive adjustment operations according to the width size of the detected product, so that the application range of the detection operation is wider and the detection operation is better completed.

[0040] (4) The hot-rolled steel plate surface quality online detection device and detection method are provided with a vertical moving unit. When the extension column moves to the vertical position of the concave groove, the extension column engages with the L-shaped rack and drives the abutment plate and the abutment block to move synchronously. The inclined surface of the abutment block contacts the inclined surface of the inclined block, and the abutment operation causes the L-shaped plate to move upward, thereby driving the collection sensor to move in the vertical direction, thereby realizing the lifting of the collection sensor, avoiding collision and providing a longer height distance for data collection, thereby ensuring the completeness of data collection during the detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is an external three-dimensional structural diagram of the present invention;

[0042] Figure 2 It is a three-dimensional structural diagram of the detection box of the present invention;

[0043] Figure 3 It is a three-dimensional structural cross-sectional view of the detection box of the present invention;

[0044] Figure 4 This is a first-view internal stereoscopic structural diagram of the detection box of the present invention;

[0045] Figure 5 This is a second perspective internal stereoscopic structure diagram of the detection box of the present invention;

[0046] Figure 6 It is a three-dimensional structural diagram of the control component of the present invention;

[0047] Figure 7 For the present invention Figure 6 A magnified view of the local structure at center A;

[0048] Figure 8 It is a three-dimensional structural diagram of the horizontal moving unit of the present invention;

[0049] Fig. 9 This is a three-dimensional structure split diagram between the L-shaped plate and the concave plate of the present invention;

[0050] Fig.10 This is a disassembled view of the three-dimensional structure between the vertical moving unit and the L-shaped plate of the present invention;

[0051] Fig.11 It is a partial three-dimensional structural diagram of the vertical moving unit of the present invention;

[0052] Fig.12 This is a disassembled view of the three-dimensional structure between the relative L-shaped plates of the present invention;

[0053] Fig.13 It is a three-dimensional structural diagram of the linkage member of the present invention;

[0054] Fig.14 It is a disassembled view of the three-dimensional structure between the concave plate and the convex plate of the present invention.

[0055] In the figure:

[0056] 1-Detection rack;

[0057] 2-Testing box;

[0058] 3-Detection slot;

[0059] 4-detection part, 41-convex plate, 42-L-shaped plate, 43-concave plate, 44-concave groove, 45-rotating plate, 46-square plate, 47-extension column, 48-collection sensor;

[0060] 5-horizontal moving unit, 51-moving column, 52-square slot, 53-limiting column, 54-limiting slot, 55-screw member, 551-bracket plate, 552-control motor, 553-bidirectional threaded rod, 554-convex block, 555-moving slot, 556-moving bar;

[0061] 6-vertical moving unit, 61-oblique block, 621-moving plate, 622-moving block, 623-moving plate, 624-through block, 625-placement slot, 626-moving spring, 627-L-shaped rack;

[0062] 7-driving member, 71-driving motor, 72-driving shaft;

[0063] 8-control part, 81-vertical plate, 82-sliding assembly, 821-sliding block, 822-wrapping slot, 823-sliding bar, 824-fixed block, 83-concave frame, 84-secondary driving shaft, 85-long slot;

[0064] 9-linkage member, 91-horizontal rack, 92-gear, 93-transmission wheel, 94-transmission belt, 95-protective housing. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] See also Figure 1-Figure 14 , the present invention provides two technical solutions:

[0067] Embodiment 1: An online detection device for the surface quality of a hot-rolled steel plate comprises a detection frame 1, a product conveying device is arranged on the top of the detection frame 1, and a detection box 2 is installed on the top of the detection frame 1, a detection slot 3 is opened on the surface of the detection box 2, and the product passes through the detection slot 3 through the product conveying device, and a detection control mechanism is arranged in the detection box 2 to realize the detection operation of the top and side of the product, and the detection control mechanism comprises:

[0068] The detection part 4 is arranged in the detection box 2, and includes a convex plate 41 fixedly installed in the inner cavity of the detection box 2 and located above the detection slot 3. The left and right sides of the surface of the convex plate 41 are symmetrically slid with an L-shaped plate 42 and a concave plate 43, and the surfaces of the L-shaped plate 42 and the concave plate 43 are provided with interconnected grooves to form a concave slot 44. A rotating plate 45 is reciprocated by a driving member 7 on one side of the convex plate 41, and a square plate 46 is moved by a control member 8 on the surface of the rotating plate 45, and then an extension column 47 is rotatably installed on one side of the square plate 46 to slide in the concave slot 44, and a collection sensor 48 is arranged at the bottom of the square plate 46 to extend to the detection slot 3 to collect data on the product surface;

[0069] In the adjustment part, a horizontal moving unit 5 is arranged on the top of the two L-shaped plates 42 to realize the relative or opposite movement of the two L-shaped plates 42, and a vertical moving unit 6 is arranged between the L-shaped plate 42 and the concave plate 43 on the same side to realize the vertical movement of the L-shaped plate 42.

[0070] Among them, the product conveying device is an existing mature technology in the detection operation, which mainly relies on the rotating driving source to drive the conveyor belt on the detection frame 1 to perform mobile transmission operations. The collection sensor 48 is also an existing mature electrical component, including a laser displacement sensor and a linear displacement sensor, which directly monitors the displacement changes at both ends of the crack and provides data on the crack width growing over time. The collected data is transmitted to the control terminal through wireless communication technology, and the control terminal realizes the output operation of the detection results after analysis.

[0071] The driving shaft of the driving member 7 is fixedly connected to the rotating plate 45, and can drive the rotating plate 45 to rotate around the axis of the driving shaft. A control member 8 is provided on the side of the convex plate 41 away from the driving member 7. A square plate 46 is provided on the control member 8. The square plate 46 is connected to the convex plate 41 through the control member 8. An extension column 47 is rotatably connected to the square plate 46. A through-long groove 85 is provided on the rotating plate 45 along its length direction. The extension column 47 penetrates the long groove 85 and cooperates with the rotating plate 45, and the extension column 47 extends into the concave groove 44. By providing a detection control mechanism, the driving motor 71 is used to drive the rotation of the rotating plate 45, so that the long groove 85 controls the extension column 47 to move in the concave groove 44, thereby realizing the synchronous detection operation of the side and top surfaces of the product by the acquisition sensor 48, thereby not only realizing multi-directional data collection, but also effectively avoiding the actual misjudgment caused by the presence of adhesion on the surface, thereby improving the efficiency and accuracy of detection.

[0072] See also Figure 4 In the embodiment of the present invention, the driving member 7 includes a driving motor 71 installed on the left side of the detection box 2, and one end of the output shaft of the driving motor 71 is fixed with a driving shaft 72 through a coupling, and one end of the driving shaft 72 passes through the convex plate 41 and the detection box 2 and extends to the interior of the detection box 2 and is connected and fixed to the bottom of the surface of the rotating plate 45, that is, the driving shaft 72 is fixedly connected to one end of the rotating plate 45.

[0073] The driving motor 71 is a three-phase asynchronous motor, which is electrically connected to an external power supply. The driving angle of the driving motor 71 is determined by a set control to control the moving height of the acquisition sensor 48.

[0074] See also Figure 5-Figure 7 and Fig.13 In the embodiment of the present invention, the control element 8 includes:

[0075] The vertical plate 81 is connected and fixed to the bottom of the square plate 46. The surface of the vertical plate 81 can slide relative to the surface of the convex plate 41 by using the sliding assembly 82; the sliding direction includes the horizontal direction and the vertical direction;

[0076] The concave frame 83 is fixedly mounted at the bottom end of the vertical plate 81, and the opening faces downward, and the auxiliary shaft 84 is rotatably mounted in the groove of the concave frame 83, and the top connection of the acquisition sensor 48 is fixedly penetrated by the surface of the auxiliary shaft 84;

[0077] A long groove 85 is formed on the surface of the rotating plate 45 . The rotation of the rotating plate 45 controls the extension column 47 to move along the concave groove 44 through the long groove 85 .

[0078] See also Figure 6 In the embodiment of the present invention, the sliding assembly 82 includes:

[0079] The sliding block 821 has a wrapping groove 822 on one side close to the convex plate 41, and a sliding bar 823 is installed on one side of the convex plate 41 close to the sliding block 821, and the wrapping groove 822 wraps the sliding bar 823 and realizes the horizontal sliding of the sliding block 821;

[0080] The fixed block 824 is connected and fixed to a side of the sliding block 821 away from the protruding plate 41 , and the vertical plate 81 passes through the fixed block 824 and can slide vertically relative to the fixed block 824 .

[0081] See also Fig.13 In the embodiment of the present invention, a linkage member 9 for controlling the rotation of the acquisition sensor 48 is provided on the auxiliary driving shaft 84 and the extension column 47, and the linkage member 9 includes:

[0082] A horizontal rack 91 is slidably provided at the level of the concave grooves 44 corresponding to the two L-shaped plates 42, and a gear 92 is fixed at the end of the extension column 47;

[0083] The transmission wheel 93 is provided with a pair of wheels fixedly mounted on the auxiliary drive shaft 84 and the extended ends of the extension column 47 respectively, and the surface of the transmission wheel 93 realizes the synchronous rotation of the auxiliary drive shaft 84 and the extension column 47 through the transmission belt 94, and a protective shell 95 is installed on the surface of the square plate 46 and the concave frame 83.

[0084] Among them, the gear 92 is located at the horizontal part of the concave groove 44 and will contact the horizontal rack 91, and when moving from left to right in the horizontal groove, the gear 92 contacts the horizontal rack 91 to realize the limiting operation, and the gear 92 does not rotate until it moves to the rightmost end of the horizontal groove with the horizontal rack 91 and is pushed. The gear 92 will roll on the meshing horizontal rack 91, thereby driving the synchronous rotation of the extension column 47, and a sliding bar is installed at the bottom of the horizontal rack 91, and a long groove adapted to slide with the sliding bar is opened at the horizontal part of the concave groove 44, and the gap compensation after the subsequent relative movement of the L-shaped plate 42 is realized in the long groove through components such as the moving column 51, the square groove 52, the limiting column 53 and the limiting groove 54, and a long groove for the sliding of the sliding bar is opened at the top surface of the moving column 51.

[0085] By providing a linkage part 9, that is, when the extension column 47 is located in the concave groove 44 and moves from the horizontal position to the vertical position, until it moves to the upper part of the vertical position, the gear 92 on the extension column 47 contacts and meshes with the horizontal rack 91 provided at the horizontal position below the groove, so that the gear 92 rotates. At this time, the extension column 47 drives the auxiliary drive shaft 84 to rotate synchronously through the transmission wheel 93 and the transmission belt 94, and then the rotation of the auxiliary drive shaft 84 realizes the 90° turn of the collection sensor 48 inside the concave frame 83, and completes the adjustment of the collection direction of the collection sensor 48, thereby realizing synchronous linkage with the moving process and facilitating data collection.

[0086] See also Figure 3-Figure 5 , Figure 8 and Fig.12 In the embodiment of the present invention, the horizontal moving unit 5 includes:

[0087] The movable column 51 is fixedly mounted on the end surface of the rear L-shaped plate 42, and a square groove 52 adapted to the movable column 51 is opened on the end surface of the front L-shaped plate 42;

[0088] The limiting posts 53 are symmetrically fixed on the left and right sides of the moving post 51, and limiting grooves 54 adapted to slide with the limiting posts 53 are provided on the left and right opposite sides of the square groove 52, and the relative L-shaped plates 42 are driven by the screw member 55 to perform horizontal movement operation.

[0089] See also Figure 5 In the embodiment of the present invention, the lead screw member 55 comprises:

[0090] The bracket plate 551 is mounted on the front side of the front L-shaped plate 42, and a control motor 552 is mounted on the top, and the output shaft of the control motor 552 is fixed with a bidirectional threaded rod 553 through a coupling;

[0091] The convex block 554 is symmetrically installed on the top of the two L-shaped plates 42. The two sections of the thread of the bidirectional threaded rod 553 are respectively threadedly connected to the two convex blocks 554, and a moving groove 555 is opened at the bottom of the concave plate 43. A moving bar 556 is installed on the top of the convex plate 41 and slides inside the moving groove 555. The driving of the bidirectional threaded rod 553 enables the L-shaped plate 42 and the concave plate 43 to move horizontally as a whole under the limitation of the moving groove 555 and the moving bar 556.

[0092] By providing a horizontal moving unit 5, the start control motor 552 drives the bidirectional threaded rod 553 to rotate, thereby driving the L-shaped plate 42 connected below the convex block 554 to perform relative or opposite horizontal movement operations, and the moving column 51 and the limiting column 53 between the relative L-shaped plate 42 slide in the square groove 52 and the limiting groove 54, so as to perform adaptive adjustment operations according to the width size of the detected product, so that the application scope of the detection operation is wider and the detection operation is better completed.

[0093] Among them, the control motor 552 is electrically connected to the external power supply and is a three-phase asynchronous motor. The control motor 552 realizes the opening and closing operation through the control terminal data control. The control motor 552 is an existing electrical component and has the function of self-locking when shut down. The angle that the control motor 552 can drive is determined by the set control, and the rotation of the bidirectional threaded rod 553 realizes the relative or opposite horizontal movement of the threaded convex block 554.

[0094] See also Figure 9-11 In the embodiment of the present invention, the vertical moving unit 6 includes:

[0095] The inclined block 61 is fixedly mounted on the top end surface of the concave plate 43, and one side of the inclined block 61 opposite to the surface groove is an inclined surface;

[0096] When the extension column 47 moves from the horizontal position of the concave groove 44 to the vertical position, the abutment is abutted and comes into contact with the oblique block 61, so that the upper L-shaped plate 42 moves vertically.

[0097] See also Fig.11 In an embodiment of the present invention, the abutment member comprises:

[0098] The moving plate 621 has a moving block 622 mounted on its surface, and the inclined surface of the moving block 622 is parallel to and opposite to the inclined surface of the inclined block 61, and the inside of the moving plate 621 is slidably connected with a moving plate 623 in the vertical direction, and an L-shaped rack 627 is fixedly mounted on the surface of the moving plate 623 and extends to the outside of the moving plate 621, and telescopic springs are symmetrically mounted on the top of the moving plate 623 and the top of the inner cavity of the moving plate 621;

[0099] The penetration block 624 is located inside the L-shaped plate 42 and has a placement groove 625 opposite to the abutment plate 621 . The penetration block 624 extends into the placement groove 625 , and an abutment spring 626 is installed between the opposite sides of the penetration block 624 and the placement groove 625 .

[0100] Among them, when the gear 92 rolls on the horizontal rack 91 and is about to disengage from the meshing contact, the surface of the gear 92 will contact the horizontal rack of the L-shaped rack 627, and then, the gear 92 rolls on the horizontal rack of the L-shaped rack 627 for a short distance and then meshes with the vertical rack of the L-shaped rack 627, thereby realizing the limiting operation of the rotation of the gear 92, and the telescopic spring makes the L-shaped rack 627 flush with the horizontal rack 91 without being affected by other external forces, and then when the L-shaped rack 627 is pushed and completely located in the vertical groove of the concave groove 44, the operation of being pressed vertically downward is realized.

[0101] By providing a vertical moving unit 6, when the extension column 47 moves to the vertical position of the concave groove 44, the gear 92 at the end of the extension column 47 engages with the L-shaped rack 627, and drives the abutment plate 621 and the abutment block 622 to move synchronously, and the inclined surface of the abutment block 622 contacts the inclined surface of the inclined block 61, and the abutment operation causes the L-shaped plate 42 to move upward, thereby driving the collection sensor 48 to move in the vertical direction, thereby realizing the lifting of the collection sensor 48, avoiding collisions while providing a longer height distance for data collection, thereby ensuring the completeness of data collection during the detection operation.

[0102] Embodiment 2 is different from Embodiment 1 in that: the present invention further discloses a detection method of an online detection device for the surface quality of hot-rolled steel plates, which specifically comprises the following steps:

[0103] S1. According to the size of the product to be tested, the adjustment unit is used to adjust the moving distance during testing;

[0104] S2, using the conveying device on the detection rack 1 to transport the detection product from the channel of the detection slot 3, and realize the stop detection operation;

[0105] S3, using the detection unit 4 to drive the acquisition sensor 48 located at the side of the detection product to move to the top surface, and then move to the other side to collect data, and then transmit it to the control terminal to realize data analysis to determine whether there is a crack.

[0106] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0107] During operation, the moving distance of the detection device is adaptively adjusted according to the size of the product to be detected, and the rotation angle of the control motor 552 is obtained according to the conversion of the control terminal, and then the control motor 552 is started to drive the bidirectional threaded rod 553 to rotate. Under the sliding limit of the moving groove 555 under the concave plate 43 and the convex block 554, the bidirectional threaded rod 553 drives the convex block 554 and the L-shaped plate 42 connected below to perform relative or opposite horizontal movement operations until they move to the required horizontal distance and stop moving. At this time, the moving column 51 and the limiting column 53 relative to the L-shaped plate 42 slide in the square groove 52 and the limiting groove 54, so as to realize the relative movement of the L-shaped plate 42 and drive the synchronous movement of the concave plate 43;

[0108] Then, the product conveying device is used to realize the transmission and detection of the product from the detection slot 3. At this time, the driving motor 71 is started, and the driving motor 71 drives the driving shaft 72 and the rotating plate 45 fixed at the end to rotate synchronously. The rotation of the rotating plate 45 makes the long slot 85 control the extension column 47 in contact with the long slot 85 to move in the concave slot 44 formed by the L-shaped plate 42 and the concave plate 43. The movement of the extension column 47 drives the square plate 46 and the vertical plate 81 and the concave frame 83 connected below to move. At this time, as the extension column 47 moves in the concave slot 44, the collection sensor 48 also moves to realize the data collection operation on the side and top surface of the product.

[0109] Wherein, the acquisition sensor 48 is in the process of horizontal movement and collecting data on the top surface of the product;

[0110] When the horizontal groove of the extension column 47 located in the concave groove 44 moves from left to right to the vertical groove, the gear 92 located at the horizontal part of the concave groove 44 will contact the horizontal rack 91, and the gear 92 contacts the horizontal rack 91 to realize the limit operation, and the gear 92 does not rotate until it moves to the rightmost end of the horizontal groove with the horizontal rack 91 and is pushed. The gear 92 will roll on the meshing horizontal rack 91, thereby driving the synchronous rotation of the extension column 47 fixed with the gear 92. At this time, the extension end of the extension column 47 drives the synchronous rotation of the auxiliary shaft 84 through the fixed transmission wheel 93 and the transmission of the transmission belt 94, and then the rotation of the auxiliary shaft 84 realizes the steering operation of the collection sensor 48 fixed to the auxiliary shaft 84 inside the concave frame 83, thereby driving the collection direction of the collection sensor 48 toward the side of the product;

[0111] While the acquisition sensor 48 is moving vertically and collecting data on the side of the product;

[0112] At the same time, when the gear 92 rolls on the horizontal rack 91 until it is about to disengage, the surface of the gear 92 will contact the horizontal rack of the L-shaped rack 627, and then, the gear 92 rolls on the horizontal rack of the L-shaped rack 627 for a short distance and then engages with the vertical rack of the L-shaped rack 627, thereby realizing the limiting operation of the rotation of the gear 92. At this time, the extension column 47 fixed to the gear 92 does not rotate either, and the rotational driving force of the rotating plate 45 presses the extension column 47 located in the long groove 85 through the long groove 85, first pressing the extension column 47 and the L-shaped rack 627 to move horizontally to the right, at this time driving the moving plate 621 to move to the right, and driving the fixed moving block 622 to move synchronously, the inclined surface of the moving block 622 contacts the inclined surface of the inclined block 61, because the position of the inclined block 61 is The L-shaped plate 42 is fixed, so when the abutment block 622 moves and contacts it, it moves upward synchronously. At this time, the upward movement of the abutment block 622 will cause the symmetrical L-shaped plate 42 to move upward, and when the extension column 47 and the L-shaped rack 627 are completely located in the vertical section of the concave groove 44, the rotational driving force of the rotating plate 45 presses the extension column 47 and the contacted L-shaped rack 627 to move vertically, so that the L-shaped rack 627 moves downward along the vertical groove, thereby driving the extension column 47, the square plate 46, the vertical plate 81, the concave frame 83 and the collection sensor 48 that has been facing the product to move synchronously in the vertical direction, and then the data collection operation is performed through the collection sensor 48, and the collected data is transmitted to the control terminal for data analysis, and finally it is determined whether there are defects on the surface of the steel plate.

[0113] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0114] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online detection device for the surface quality of a hot-rolled steel plate, comprising a detection frame (1), a product conveying device disposed on the top of the detection frame (1), and a detection box (2) mounted on the top of the detection frame (1), a detection groove (3) disposed on the surface of the detection box (2), characterized in that: The detection box (2) is provided with a detection control mechanism to realize the detection operation of the top and side of the product, and the detection control mechanism includes: The detection part (4) is arranged in the detection box (2), and comprises a convex plate (41) fixedly installed in the inner cavity of the detection box (2) and located above the detection slot (3); an L-shaped plate (42) and a concave plate (43) are symmetrically slidably provided on the left and right sides of the surface of the convex plate (41); the surfaces of the L-shaped plate (42) and the concave plate (43) are provided with interconnected grooves that are combined to form a concave slot (44); a rotating plate (45) is reciprocated by a driving member (7) on one side of the convex plate (41); and a square plate (46) is moved by a control member (8) on the surface of the rotating plate (45); and then an extension column (47) is rotatably installed on one side of the square plate (46) and slides in the concave slot (44); and a collection sensor (48) is provided at the bottom of the square plate (46) and extends into the detection slot (3) to collect data on the product surface; The adjusting part comprises a horizontal moving unit (5) disposed on the top of the two L-shaped plates (42) to realize relative or opposite movement of the two L-shaped plates (42), and a vertical moving unit (6) disposed between the L-shaped plate (42) and the concave plate (43) on the same side to realize vertical movement of the L-shaped plate (42).

2. The online detection device for the surface quality of hot-rolled steel plate according to claim 1, characterized in that: The driving member (7) comprises a driving motor (71) mounted on the left side of the detection box (2), and one end of the output shaft of the driving motor (71) is fixed with a driving shaft (72) via a coupling, and one end of the driving shaft (72) penetrates the convex plate (41) and the detection box (2) and extends to the interior of the detection box (2) and is connected and fixed to the bottom of the surface of the rotating plate (45).

3. The online detection device for the surface quality of hot-rolled steel plate according to claim 1, characterized in that: The control member (8) comprises: A vertical plate (81) is connected and fixed to the bottom of the square plate (46), and the surface of the vertical plate (81) can slide relative to the surface of the convex plate (41) by using a sliding assembly (82); The concave frame (83) is fixedly mounted on the bottom end of the vertical plate (81), and a secondary shaft (84) is rotatably mounted in the groove of the concave frame (83), and the top connection of the acquisition sensor (48) is fixedly penetrated by the surface of the secondary shaft (84); A long groove (85) is provided on the surface of the rotating plate (45), and the rotation of the rotating plate (45) controls the extension column (47) to move along the concave groove (44) through the long groove (85).

4. The online detection device for the surface quality of hot-rolled steel plate according to claim 3 is characterized in that: The sliding assembly (82) comprises: The sliding block (821) is provided with a wrapping groove (822) on one side close to the convex plate (41), a sliding bar (823) is installed on one side of the convex plate (41) close to the sliding block (821), and the wrapping groove (822) wraps the sliding bar (823) and realizes horizontal sliding of the sliding block (821); The fixed block (824) is connected and fixed to a side of the sliding block (821) away from the convex plate (41), and the vertical plate (81) passes through the fixed block (824) and can slide vertically relative to the fixed block (824).

5. The online detection device for the surface quality of hot-rolled steel plate according to claim 3 is characterized in that: The auxiliary drive shaft (84) and the extension column (47) are provided with a linkage member (9) for controlling the rotation of the acquisition sensor (48), and the linkage member (9) comprises: A horizontal rack (91) is slidably provided at the level of the concave grooves (44) corresponding to the two L-shaped plates (42), and a gear (92) is fixed at the end of the extension column (47); The transmission wheel (93) is provided with a pair of wheels respectively fixedly mounted on the auxiliary drive shaft (84) and the extended ends of the extension column (47), and the surface of the transmission wheel (93) realizes the synchronous rotation of the auxiliary drive shaft (84) and the extension column (47) through the transmission belt (94), and a protective shell (95) is installed on the surface of the square plate (46) and the concave frame (83).

6. The online detection device for the surface quality of hot-rolled steel plate according to claim 1, characterized in that: The horizontal moving unit (5) comprises: The movable column (51) is fixedly mounted on the end surface of the rear L-shaped plate (42), and a square groove (52) adapted to the movable column (51) is provided on the end surface of the front L-shaped plate (42); The limiting columns (53) are symmetrically fixed on the left and right sides of the movable column (51), and limiting grooves (54) adapted to slide with the limiting columns (53) are provided on the left and right opposite sides of the square groove (52), and the opposite L-shaped plates (42) are driven by the lead screw (55) to perform horizontal movement operation.

7. The device for online detection of surface quality of hot-rolled steel sheet according to claim 6, characterized in that: The lead screw member (55) comprises: A bracket plate (551) is mounted on the front side of the front L-shaped plate (42), and a control motor (552) is mounted on the top thereof, and a bidirectional threaded rod (553) is fixed to the output shaft of the control motor (552) via a coupling; The convex blocks (554) are symmetrically mounted on the tops of the two L-shaped plates (42). The two threads of the bidirectional threaded rod (553) are respectively threadedly connected to the two convex blocks (554). The bottom of the concave plate (43) is provided with a moving groove (555). The top of the convex plate (41) is provided with a moving bar (556) which slides inside the moving groove (555). The bidirectional threaded rod (553) drives the L-shaped plate (42) and the concave plate (43) as a whole to move horizontally under the limit of the moving groove (555) and the moving bar (556).

8. The on-line detection device for the surface quality of hot-rolled steel plate according to claim 1, characterized in that: The vertical movement unit (6) comprises: An inclined block (61) is fixedly mounted on the top end surface of the concave plate (43), and a side of the inclined block (61) opposite to the surface groove is an inclined surface; When the abutment member and the extension column (47) move from the horizontal position of the concave groove (44) to the vertical position, the abutment member is abutted and contacts the inclined block (61) so that the upper L-shaped plate (42) moves vertically.

9. The online detection device for the surface quality of hot-rolled steel plate according to claim 8, characterized in that: The abutment member comprises: The abutting plate (621) has an abutting block (622) mounted on its surface, and the inclined surface of the abutting block (622) is parallel to and opposite to the inclined surface of the inclined block (61), and the interior of the abutting plate (621) is slidably connected with a moving plate (623) in a vertical direction, and an L-shaped rack (627) is fixedly mounted on the surface of the moving plate (623) and extends to the outside of the abutting plate (621), and telescopic springs are symmetrically mounted on the top of the moving plate (623) and the top of the inner cavity of the abutting plate (621); The penetration block (624) is located inside the L-shaped plate (42) and is provided with a placement groove (625) at a position opposite to the abutment plate (621). The penetration block (624) extends through the placement groove (625) and an abutment spring (626) is installed between the opposite sides of the penetration block (624) and the placement groove (625).

10. A method for online detection of surface quality of hot-rolled steel sheets, using an online detection device for surface quality of hot-rolled steel sheets as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: S1. According to the size of the product to be tested, the adjustment unit is used to adjust the moving distance during testing; S2, using the conveying device on the detection rack (1) to transport the detection product from the channel of the detection tank (3) and implement a stop detection operation; S3, using the detection unit (4) to drive the collection sensor (48) located on the side of the detection product to move to the top surface, and then move to the other side to collect data, and then transmit the data to the control terminal to perform data analysis to determine whether there are cracks.

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