Stirring blade detection equipment for hollow blade drying machine and detection method of stirring blade detection equipment

Abstract

The invention relates to the technical field of hollow blade dryers, in particular to stirring blade detection equipment for a hollow blade dryer and a detection method of the stirring blade detection equipment, and overcomes the defects in the prior art. The detection equipment comprises a detection table, a fixing assembly and a detection mechanism, and an operation terminal with a PLC is installed on the detection table; the detection mechanism comprises a detection table, a fixing groove is formed in the detection table, the two fixing assemblies are arranged and located on the two sides of the fixing groove respectively, a hot shaft is installed between the two fixing assemblies, a plurality of hollow blades are distributed on the hot shaft, and the detection mechanism comprises an adjusting base, a stand column, a lifting base, a movable arm, a measuring assembly, an output assembly, a feedback assembly and a balance rod. The adjusting seat is slidably adjusted along the side wall of the fixing groove, the two stand columns are both vertically installed on the adjusting seat, and compared with the prior art, whether the thickness changes of the hollow blades on the same hot shaft are different or not can be effectively detected.

Description

Technical Field

[0001] The invention relates to the technical field of hollow blade dryers, and in particular to a stirring blade detection device and a detection method thereof for a hollow blade dryer. Background Art

[0002] Hollow paddle dryer is a highly efficient drying equipment, which mainly consists of the following key parts: shell, hot shaft, paddle, upper cover, transmission device, rotary joint and other parts. Among them, the hot shaft is the key component of the wedge-shaped paddle dryer, and the inner cavity is designed to be hollow for the introduction of heat carrier. The paddle is welded on the hot shaft and is also hollow. Its surface is the main heat transfer surface in the paddle dryer. The paddle consists of two fan-shaped inclined side plates, a triangular arc cover and a rectangular rear cover plate at the bottom of the triangle, and an auxiliary stirring blade connected to the rectangular rear cover plate.

[0003] A Chinese patent with announcement number CN203928688U discloses a paddle dryer and its paddle structure. The stirring blade is a wedge-shaped hollow fan-shaped stirring blade with a certain thickness. The thickness of the fan-shaped stirring blade gradually increases from one end to the other. The inner arc surface of the stirring blade is welded to the stirring shaft. The specifications of the stirring blades on the same stirring shaft should be uniform. If the specifications of several stirring blades are inconsistent with the others, these inconsistent stirring blades may generate unbalanced forces during rotation, resulting in increased wear inside the equipment.

[0004] Therefore, we propose a stirring blade detection device and a detection method for a hollow blade dryer to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a stirring blade detection device and a detection method for a hollow blade dryer to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A stirring blade detection device for a hollow blade dryer comprises a detection platform, a fixing component and a detection mechanism, wherein an operation terminal with a PLC controller is installed on the detection platform, and a fixing slot is provided on the detection platform; The fixing components are provided in two groups, which are respectively located on both sides of the fixing groove, and a heat shaft is installed between the two groups of fixing components, and a plurality of hollow blades are distributed on the heat shaft; The detection mechanism includes an adjustment seat, a column, a lifting seat, a movable arm, a measuring component, an output component, a feedback component and a balance bar; The adjusting seat slides and adjusts along the side wall of the fixed groove, two columns are provided and both are vertically installed on the adjusting seat, the lifting seat slides and adjusts along the vertical direction of the column, and the movable arms for adjusting movement in the horizontal direction are provided on both sides of the lifting seat, the measuring component is arranged on the movable arm, one end of the measuring component is elastically arranged on one side of the movable arm and is always in contact with the fan-shaped side wall of the hollow blade, and the other end of the measuring component moves and adjusts along the length direction of the lifting seat to control the power input of the output component, the output component is arranged on one side of the column in the vertical direction, and the bottom end of the output component and the measuring component are arranged by meshing transmission, the output component acts on the feedback component and makes the feedback component move in the vertical direction above the column, the balance bar is arranged between the feedback components on both sides, and the inclination degree of the balance bar reflects whether the thickness changes of the two hollow blades in the same group of tests are consistent.

[0007] In one embodiment, the fixing assembly includes a movable seat, a support and an electric cylinder. The movable seat is arranged on the detection table and slides and adjusts along the length direction of the detection table. Two electric cylinders are provided and are both installed on the detection table. The output end of the electric cylinder is connected to the side wall of the movable seat. The support is fixed in the middle of the top surface of the movable seat. A bearing ring is also arranged on one side of the side wall of the support. The end of the hot shaft is installed in the bearing ring and is fixed as a whole by a plurality of set screws.

[0008] In one embodiment, a screw rod 1 is rotatably arranged in the fixed groove, the screw rod 1 penetrates the adjustment seat and is threadedly matched with it, guide rods are fixedly installed on both sides of the screw rod 1 between the side walls of the fixed groove, the guide rods penetrate the adjustment seat and are in sliding contact with it, a distance sensor is embedded on the top surface of the column, the distance sensor is connected to the PLC controller through an electrical signal, and a screw rod 2 is rotatably arranged on one side of the column along the vertical direction.

[0009] In one embodiment, a side platform 1 and a side platform 2 are respectively installed on the vertical side walls on both sides of the lifting seat, two dovetail grooves 1 are opened on the side platform 1, and two driving gears and two transmission gears that mesh with each other are arranged on the side platform 2, the two driving gears are located between the two transmission gears, and a rotating motor 3 is connected to the bottom of one of the driving gears, and the rotating motor 3 is installed on the bottom wall of the side platform 2; Guide grooves are provided on the other two vertical side walls of the lifting seat, and the movable arm is slidably arranged between the inner walls of the guide grooves. A fixing hole is provided on the movable arm along its length direction, and a tooth groove one meshing with the transmission gear is also provided on one side wall of the movable arm along its length direction, and the tooth groove one and the fixing hole one are not located at the same horizontal height.

[0010] In one embodiment, the measuring assembly includes an adjusting arm 1, an adjusting arm 2, a spring rod and a measuring head, the adjusting arm 2 is arranged in an "L"-shaped structure, a dovetail-shaped guide bar 1 is arranged on the adjusting arm 1, a dovetail-shaped guide bar 2 is arranged on the bottom wall of the adjusting arm 2, and a dovetail groove 2 is also opened on the side wall of the adjusting arm 2, the guide bar 1 slides between the inner walls of the dovetail groove 2, and the guide bar 2 slides between the inner walls of the dovetail groove 1; One end of the spring rod is connected to the measuring head, and a cylindrical connecting disk is arranged on the other end of the spring rod. The connecting disk is fixed on an adjusting arm, and the spring rod passes through the inner wall of the movable arm and is in sliding contact with it. An adjusting spring is also arranged between the measuring head and the movable arm, and the adjusting spring is sleeved on the outside of the spring rod.

[0011] In one embodiment, the output assembly includes a rotating cylinder, a key shaft and an adjusting gear, the bottom end of the key shaft passes through the adjusting gear and is connected thereto as a whole, and the bottom end of the key shaft extends to the side platform 1 and is rotatably connected thereto, the adjusting gear is located between the adjusting arms 2 on both sides, and the two adjusting arms 2 are each provided with a tooth groove 2, and the tooth groove 2 is meshed with the adjusting gear for transmission; The key shaft is always arranged in a vertical state, and the key shaft penetrates the rotating cylinder and is slidably arranged therewith by means of a key connection. An external thread is provided on the outer surface of the rotating cylinder, and a connecting groove is also provided on the outer surface of the rotating cylinder near the bottom end. A limiting convex plate connected therewith is provided on the top of the rotating cylinder, and a horizontally arranged support seat is installed on one side of the vertical side wall of the column. An annular connecting bearing is embedded at the end of the support seat, and the connecting bearing is rotatably arranged between the inner walls of the connecting groove. When the lifting seat moves up and down in the vertical direction, the key shaft moves up and down synchronously along the inner wall of the rotating cylinder. When the lifting seat moves to the lowest position, the top of the key shaft is located in the rotating cylinder but not separated. When the lifting seat moves to the highest position, the key shaft penetrates the rotating cylinder.

[0012] In one embodiment, the feedback assembly includes a lifting plate, a connecting shaft and a limit shaft. The lifting plate is arranged in an "L"-shaped structure. The top end of the connecting shaft is fixed on the bottom wall of the lifting plate, and a guide block is arranged at the bottom end of the connecting shaft. The guide block and the connecting shaft are both slidably adjusted along the vertical inner wall of the column. The rotating cylinder passes through the lifting plate and cooperates with the lifting plate thread transmission through an external thread. One end of the limit shaft is fixed on the end wall of the lifting plate, and the limit shaft is provided with two limit plates connected to it as a whole.

[0013] In one embodiment, the balance pole is provided with two symmetrically arranged fixing holes two along its length direction, the connecting shaft passes through the fixing hole two and is in sliding contact with the inner wall, the limiting plate can be in sliding contact with the side wall of the balance pole with the movement of the connecting shaft, and an inclination sensor is also embedded on the side wall at the middle position of the balance pole, and the inclination sensor is connected to the PLC controller through an electrical signal.

[0014] A detection method for a stirring blade detection device for a hollow blade dryer, comprising the following steps: S1. First, adjust the positions of the two fixing components according to the length of the hot axis, and position the hot axis between the bearing rings on both sides, and fix it after adjusting the test angle of the hot axis; S2. Next, adjust the lifting seat to a corresponding test height, and adjust the measuring head to a corresponding test position, so that the measuring head is located at the thickest position of the hollow blade before the test; S3. Subsequently, the movement process of the lifting seat and the movable arm is set according to the curvature change of the fan-shaped side wall of the hollow blade, and the movement of the lifting seat and the movable arm is controlled at the same time so that the movement route of the measuring head driven by them conforms to the side wall trajectory of the hollow blade. As the thickness of the fan-shaped side wall of the hollow blade changes, the measuring head always contacts the side wall of the hollow blade and drives the linear movement of the adjusting arm 2 on the side platform 2, so that the adjusting gear drives the rotating cylinder to rotate synchronously for adjustment. Under the action of the connecting shaft, the lifting plates on both sides move upward synchronously, thereby controlling the inclination degree of the balance bar; S4. Then, after each test is completed, the position of the adjustment seat is adjusted, and then the next set of tests is continued. After repeating until it is completely completed, according to each test process, the system directly draws a schematic diagram of the inclination curve of the balance bar during the test time and a schematic diagram of the lifting curve of the lifting plate during the test time, and the consistency of the detection of all hollow blades on the same hot axis is determined by overlapping comparison.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: By setting structures such as a lifting seat, a movable arm, a measuring assembly, an output assembly, a feedback assembly and a balance bar, the synchronous movement of the lifting seat and the movable arm is used to control the measuring trajectory of the measuring assembly, so that the movement trajectory of the measuring head fits the trajectory change of the fan-shaped side wall of the hollow blade, and then the elastic change degree of the measuring head during the measurement process is used to control the rotational movement of the output assembly, so that the feedback assemblies on both sides can achieve synchronous lifting and lowering movements under the action of the threaded transmission, and then the inclination degree of the balance bar is used to judge whether the thickness changes of the two hollow blades in each group of tests are consistent, and then the thickness changes of all hollow blades on the same hot axis are judged whether they are consistent according to whether the lifting curve diagram of the lifting plate and the inclination curve diagram of the balance bar overlap in multiple tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0017] In the attached picture: Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the fixing assembly of the present invention; Figure 3 is a schematic diagram of the structure of the test mechanism of the present invention in its initial test state; Figure 4 It is a structural schematic diagram of the lifting seat and its auxiliary components of the present invention; Figure 5 It is a schematic diagram of the structure of the measuring component and the output component of the present invention; Figure 6 is a schematic diagram of the structure of the feedback component of the present invention; Figure 7 yes Figure 3 Schematic diagram of the side structure.

[0018] In the figure: 1, test table; 11, operation terminal; 12, guide rod; 13, screw rod 1; 2, fixed assembly; 21, moving seat; 22, support; 221, bearing ring; 23, electric cylinder; 3, hot shaft; 31, hollow blade; 4, testing mechanism; 41, adjustment seat; 42, column; 43, lifting seat; 431, side table 1; 432, guide groove; 433, side table 2; 434, driving gear; 435, transmission gear; 44, movable arm; 4 41. Fixing hole one; 45. Measuring assembly; 451. Adjusting arm one; 452. Adjusting arm two; 453. Spring rod; 454. Measuring head; 46. Output assembly; 461. Rotating cylinder; 4611. Connecting groove; 462. Key shaft; 463. Adjusting gear; 47. Feedback assembly; 471. Lifting plate; 472. Connecting shaft; 473. Limiting shaft; 48. Balance rod; 481. Inclination sensor; 482. Fixing hole two; 49. Screw two. DETAILED DESCRIPTION

[0019] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0020] like Figure 1As shown, the present invention provides a technical solution: a stirring blade detection device for a hollow blade 31 dryer, comprising a detection platform 1, a fixing component 2 and a detection mechanism 4, a fixing groove is opened on the detection platform 1 along its length direction, a screw 13 is rotatably arranged in the fixing groove, a rotating motor 1 is connected to one end of the screw 13 (not shown in the figure, the rotating motor 1 is installed between the inner walls of the detection platform 1), guide rods 12 are fixedly installed on both sides of the screw 13, the guide rods 12 are located in the fixing groove, fixing components 2 are arranged on both sides of the fixing groove on the detection platform 1, and the hot shaft 3 is fixedly installed on Between the fixed components 2 on both sides, a number of hollow blades 31 are evenly distributed on the circumferential outer surface of the hot shaft 3, and a scraper is installed on the thicker end of the hollow blade 31 by screws. Usually, the fan-shaped side walls on both sides of the same hollow blade 31 are symmetrical. In this embodiment, the difference in the fan-shaped side walls on both sides of the same hollow blade 31 is no longer considered, and only the change in the thickness of the overall fan-shaped side wall of the hollow blade 31 is detected. A detection mechanism 4 that moves along the length direction of the fixed groove is slidably arranged between the side walls of the fixed groove, and the detection mechanism 4 simultaneously tests two adjacent hollow blades 31 as a group each time.

[0021] In addition, an operation terminal 11 with a PLC controller is fixedly mounted on the top surface of the testing platform 1 .

[0022] like Figure 2 As shown, the fixing assembly 2 includes a moving seat 21, a support 22 and an electric cylinder 23; The moving seat 21 moves in a straight line direction on the top surface of the detection table 1. Two electric cylinders 23 connected to and linearly driving the moving seat 21 are arranged on one side of the moving seat 21. The electric cylinder 23 is installed on the detection table 1 by screws. The support 22 is fixed in the middle of the top surface of the moving seat 21 by bolts. A bearing ring 221 is installed on one side of the side wall of the support 22 by screws, and a plurality of set screws are threadedly connected on the circumferential outer surface of the bearing ring 221.

[0023] It should be further explained that the specific positions of the fixing components 2 on both sides are adjusted according to the length of the hot shaft 3. During adjustment, the electric cylinder 23 is used to drive the movable seat 21 to move linearly, and it stops after moving to the appropriate position. Then, the end of the hot shaft 3 is fixed in the bearing ring 221, and the end of the hot shaft 3 is firmly connected to the bearing ring 221 by the set screws.

[0024] like Figure 3-6 As shown, the detection mechanism 4 includes an adjustment seat 41, a column 42, a lifting seat 43, a movable arm 44, a measuring component 45, an output component 46, a feedback component 47 and a balance bar 48; The adjustment seat 41 is slidably arranged between the side walls of the fixing groove, the guide rod 12 passes through the adjustment seat 41 and is in sliding contact with it, the screw rod 13 passes through the adjustment seat 41 and cooperates with it through threaded transmission, two columns 42 are provided and both are fixed on the adjustment seat 41 in the vertical direction, and the bottom end of the column 42 is fixed to the adjustment seat 41 by bolts.

[0025] A lifting seat 43 is slidably arranged along the outer surface of the column 42, and guide grooves 432 are provided on the vertical side walls on both sides of the lifting seat 43, and a screw hole 1 is provided on the lifting seat 43 in the vertical direction. A screw rod 2 49 is provided in the screw hole 1, and the screw rod 2 49 is rotatably arranged along the vertical direction. An axle seat is fixed on the side wall of the column 42 by screws, and the top end of the screw rod 2 49 is rotatably arranged between the inner walls of the axle seat (there is no thread arrangement at the top end of the screw rod 2 49), and a rotating motor 2 is connected to the bottom end of the screw rod 2 49 to drive it, and the rotating motor 2 is built between the inner walls of the adjustment seat 41 (not shown in the figure).

[0026] A side platform 1 431 and a side platform 2 433 are respectively installed on the vertical side walls on the other two sides of the lifting seat 43. Two dovetail grooves 1 are opened on the side platform 1 431 along its length direction. Two driving gears 434 and two transmission gears 435 that mesh with each other are rotatably arranged above the side platform 2 433 by means of shaft connection. The two driving gears 434 are located between the two transmission gears 435, and below one of the driving gears 434 (the following contents are all in Figure 4 (For illustration purposes only, a rotating motor 3 is installed at the bottom of the upper driving gear 434 as shown in the figure.) A rotating motor 3 (not shown in the figure) is installed on the bottom wall of the side platform 2 433 , and the rotating motor 3 is the driving source of the driving gear 434 .

[0027] The movable arm 44 passes through the guide groove 432 on the adjustment seat 41, and a tooth groove 1 (not shown in the figure) is provided on the side wall of the movable arm 44 facing the transmission gear 435 along its length direction. The transmission gear 435 is always meshed with the tooth groove 1 for transmission. A fixing hole 1 441 is also provided along the length direction of the movable arm 44. The tooth groove 1 and the fixing hole 1 441 are not located at the same horizontal height. The rotation directions of two adjacent driving gears 434 are opposite, and the rotation directions of the transmission gears 435 on both sides are also opposite. The movement directions of the two movable arms 44 on the same column 42 are the same.

[0028] It should be further explained that the rotating motor 2 is started by the PLC controller to control the output rotation of the screw 2 49, and the rotation direction of the screw 2 49 is used to realize the process of rising and falling of the lifting seat 43. The rising process is completed when the screw 2 49 rotates clockwise, and the falling process is completed when it rotates counterclockwise; the rotating motor 3 is started by the PLC controller, and the rotating motor 3 drives the driving gear 434 to rotate, so that the driving gear 434 cooperates with another driving gear 434 to drive the transmission gears 435 on both sides to rotate, and then the gear tooth groove meshing effect drives the movement of the movable arms 44 on both sides. Figure 4 When the upper transmission gear 435 rotates counterclockwise and the lower transmission gear 435 rotates clockwise, Figure 3 The movable arms 44 on both sides of the middle move away from each other at the same time. Figure 4 As shown, when the upper transmission gear 435 rotates clockwise and the lower transmission gear 435 rotates counterclockwise, Figure 3 The movable arms 44 on both sides approach each other simultaneously.

[0029] The measuring assembly 45 includes an adjusting arm 1 451 , an adjusting arm 2 452 , a spring rod 453 and a measuring head 454 ; A dovetail-shaped guide bar 1 is fixed to the side wall of the adjusting arm 1 451 facing the adjusting arm 2 452 by screws. The adjusting arm 2 452 is arranged in an "L"-shaped structure, and a dovetail groove 2 is opened on one side wall of the adjusting arm 2 452. The guide bar 1 always slides between the inner walls of the dovetail groove 2. A dovetail-shaped guide bar 2 is fixed to the bottom wall of the adjusting arm 2 452 by screws. The guide bar 2 always slides between the inner walls of the dovetail groove 1.

[0030] Among them, the height of the fixing hole 1 441 is equal to the height of the adjusting arm 2 452 , and the adjusting arm 2 452 can slide linearly between the inner walls of the fixing hole 1 441 in a direction perpendicular to the length of the fixing hole 1 441 , and the adjusting arm 1 451 and the adjusting arm 2 452 are never separated.

[0031] A spring rod 453 is provided through the movable arm 44, and a measuring head 454 is connected to one end of the spring rod 453 through a thread. The measuring head 454 is provided in a hemispherical structure. During the test, the measuring head 454 always moves against the fan-shaped outer surface of the hollow blade 31, and a cylindrical connecting disk is connected to the other end of the spring rod 453. The connecting disk and the movable arm 44 are fixed by screws, and an adjusting spring is connected between the outer surface of the movable arm 44 and the measuring head 454, and the adjusting spring is sleeved on the outside of the spring rod 453.

[0032] It is worth noting that the lifting and lowering speeds of the lifting seats 43 on both sides must be consistent through the control of the PLC controller, and the movement speed of the movable arm 44 must also be consistent, so that the synchronous and stable lifting and lowering movement of the lifting plates 471 on both sides can be achieved.

[0033] It should be further explained that, by simultaneously starting the rotary motor 2 and the rotary motor 3 through the PLC controller, the screw 2 49 controls the vertical movement of the lifting seat 43, and the transmission gear 435 also controls the horizontal movement of the movable arm 44, and by setting the output parameters, the measuring head 454 realizes a circular parabolic motion (that is, an arc motion) under the action of the joint movement of the movable arm 44 and the lifting seat 43, and the movement path of the measuring head 454 is a trajectory formed by the central movement along the fan-shaped outer surface of the hollow blade 31, so that the measuring head 454 always measures the thickness change in the middle position of the hollow blade 31 during the test.

[0034] like Figure 7 As shown, since the width, thickness and other characteristics of the two hollow blades 31 in the same test group are opposite, the movement paths of the measuring heads 454 on both sides during the test are also opposite, but they are still on the same circular trajectory. Figure 7 The dotted path shown, Figure 7 The thickness of the top of the hollow blade 31 on the left is greater than the thickness of the bottom, and the thickness of the bottom of the hollow blade 31 on the right is greater than the thickness of the top. Figure 7 Taking the thickness change of the left hollow blade 31 as an example, when the measuring head 454 starts to move from the top of the left dotted path, the lifting seat 43 and the movable arm 44 move simultaneously to control the movement trajectory of the measuring head 454, so that it always falls on the dotted path. As the lifting seat 43 continues to descend, the adjusting arm 1 451, under the action of the guide bar 1, first moves toward the side where the adjusting arm 2 452 is located, and then moves away from the side where the adjusting arm 2 452 is located. At the same time, the thickness of the hollow blade 31 gradually narrows. At this time, under the action of the adjusting spring, the measuring head 454 drives the adjusting arm 1 451 to shorten the distance to the side where the movable arm 44 is located, so that the adjusting arm 2 452 is synchronously moved and adjusted together with the adjusting arm 1 451.

[0035] The output assembly 46 includes a rotating cylinder 461, a key shaft 462 and an adjusting gear 463; The adjusting gear 463 is arranged between the side walls of the two adjusting arms 452, and a tooth groove 2 (not shown in the figure) is provided on the adjusting arm 452. The adjusting gear 463 is always meshed between the tooth grooves 2 of the adjusting gears 463 on both sides. One end of the key shaft 462 passes through the adjusting gear 463 and extends to the side platform 1 431. The adjusting gear 463 and the key shaft 462 are synchronously connected by a key. The bottom end of the key shaft 462 is rotatably connected to the side platform 1 431 by an axis. The rotating cylinder 461 is arranged outside the key shaft 462 and is slidably connected therebetween by a key. , and an external thread is provided on the outer surface of the rotating cylinder 461, and a connecting groove 4611 is provided on the outer surface of the rotating cylinder 461 near the bottom end. A limiting convex disk is installed on the top of the rotating cylinder 461 by screws, and a support seat is installed on the vertical side wall of the column 42 facing the rotating cylinder 461 by screws, and an annular connecting bearing is embedded at the end of the support seat, and the connecting bearing is rotatably arranged between the inner walls of the connecting groove 4611, so that the vertical position of the rotating cylinder 461 is always constrained by the connecting bearing, but does not affect the rotation adjustment of the rotating cylinder 461.

[0036] The key shaft 462 and the rotating cylinder 461 will never be separated.

[0037] The feedback assembly 47 includes a lifting plate 471, a connecting shaft 472 and a limiting shaft 473; The lifting plate 471 is arranged in an "L"-shaped structure, and a connecting shaft 472 is fixedly installed on one end wall of the lifting plate 471 in a threaded connection manner, and two limiting plates fixed thereto are installed on the connecting shaft 472. The top end of the connecting shaft 472 is connected to the bottom wall of the lifting plate 471 as a whole, and the bottom end of the connecting shaft 472 is slidably arranged between the inner walls of the column 42 along the vertical direction. In addition, two guide blocks are fixedly installed on the circumferential outer surface of the connecting shaft 472 near the bottom end, and the guide blocks also slide between the inner walls of the column 42 along the vertical direction, so as to limit the vertical movement of the connecting shaft 472 and the lifting plate 471. The rotating cylinder 461 passes through the inner wall of the end of the lifting plate 471 and cooperates with it through threaded transmission.

[0038] A distance sensor (not shown in the figure) is embedded on the top surface of the column 42 at a position directly facing the bottom wall of the lifting plate 471, and the distance sensor is connected to the PLC controller through an electrical signal.

[0039] It is worth noting that since the test direction is from the thicker end of the hollow blade 31 to the narrower end, and the movement directions of the two groups of tests are also opposite, therefore, by setting the thread matching direction between the rotating cylinder 461 and the lifting plate 471 (that is, the external threads on the two rotating cylinders 461 can be set in opposite directions), when the measuring head 454 is detecting from the thicker end to the narrower end of the hollow blade 31, the lifting plate 471 always moves upward, and vice versa, it moves downward, so as to keep the movement directions of the two groups of test results consistent, which is more conducive to comparison.

[0040] It should be further explained that the elastic movement of the measuring head 454 caused by the change in the thickness of the hollow blade 31 drives the adjusting arms 452 on both sides to move toward or away from each other, so that the adjusting gear 463 located between the two adjusting arms 452 rotates accordingly. When the adjusting gear 463 rotates, the key shaft 462 rotates synchronously and in the same direction, and then the rotation of the rotating cylinder 461 is synchronously driven through the action of the key connection. Under the threaded transmission action of the rotating cylinder 461 on the lifting plate 471, and the vertical limiting action of the connecting shaft 472 and the guide block on the lifting plate 471, the lifting plate 471 can only perform lifting and lowering adjustment movements in the vertical direction.

[0041] A balance bar 48 is also arranged between the lifting plates 471 on both sides. Two symmetrically distributed fixing holes 482 are opened on the balance bar 48 along its length direction. The connecting shaft 472 passes through the fixing hole 482 and is slidably arranged therewith. The two limit plates on the connecting shaft 472 are respectively arranged in contact with the side walls of the balance bar 48 on both sides. An inclination sensor 481 is also embedded in the middle of the side wall of the balance bar 48. The inclination sensor 481 is connected to the PLC controller through electrical signals.

[0042] It should be further explained that, with the synchronous lifting and lowering movement of the lifting plates 471 on both sides, the balance bar 48 is also lifted and lowered accordingly. When the thicknesses of the two hollow blades 31 under test at the same position are inconsistent, the lifting plates 471 on both sides will have height deviations, thereby causing the balance bar 48 to tilt. At this time, the inclination sensor 481 will also transmit the detected inclination angle to the PLC controller in the form of an electrical signal and display it on the operation terminal 11. At the end of the test, the built-in program of the PLC controller will draw a schematic diagram of the inclination curve (that is, the test time is the X-axis, and the inclination value detected in real time by the inclination sensor 481 is the Y-axis). When the test reaches the position of the narrowest thickness, the test is completed. During the test, the distance sensor continuously detects the movement distance of the lifting plate 471 and records it in real time. It is drawn into a lifting curve schematic diagram (that is, the test time is the X-axis, and the movement distance of the lifting plate 471 is the Y-axis) through the built-in program of the PLC controller. Then, by comparing the overlapping of the schematic diagrams after each test, the consistency of all the hollow blades 31 can be determined.

[0043] Working principle: First, adjust the positions of the two fixed components 2 according to the length of the hot shaft 3, and adjust the position of the movable seat 21 by controlling the extension and contraction of the electric cylinder 23. After the adjustment is in place, the hot shaft 3 is positioned between the bearing rings 221 on both sides. After adjusting the test angle of the hot shaft 3, fix it. When adjusting the angle, try to ensure that the two scrapers in the same group of tests are close to the vertical midline (that is, the angle between the scraper and the vertical direction is the smallest); Next, the lifting seat 43 is adjusted to the corresponding test height, that is, the lifting seat 43 is controlled to move and adjust in the vertical direction by driving the screw rod 49, so that the height position of the measuring head 454 is flush with the middle position of the end of the hollow blade 31 with a larger thickness, and the measuring head 454 is synchronously driven to be adjusted to the corresponding test position by controlling the horizontal movement of the movable arm 44, so that the measuring head 454 is located at the thickest position of the hollow blade 31 (that is, Figure 7 The position A shown in the figure is the midpoint of the fan-shaped side wall corresponding to the thickest part of the hollow blade 31); Then, the movement process of the lifting seat 43 and the movable arm 44 is set according to the curvature change of the fan-shaped side wall of the hollow blade 31, and the movement of the lifting seat 43 and the movable arm 44 is controlled so that the movement path of the measuring head 454 driven by them conforms to the side wall trajectory of the hollow blade 31, wherein, Figure 7As shown, when the measuring head 454 on the left side moves from the upper position A along the arc trajectory to the straight line B, the movable arm 44 at this time moves to the left, and then continues to move downward, the movable arm 44 moves to the right. Similarly, when the measuring head 454 on the right side moves from the lower position A along the arc trajectory to the straight line B, the movable arm 44 at this time moves to the right, and then continues to move upward, the movable arm 44 moves to the left. The change point of the moving direction of the movable arm 44 is to make a horizontal straight line along the center of the thermal axis 3. When the measuring head 454 passes through this straight line, The movable arm 44 changes its movement direction. As the thickness of the fan-shaped side wall of the hollow blade 31 changes, the measuring head 454 always contacts the side wall of the hollow blade 31 and drives the second adjusting arm 452 to move linearly on the second side platform 433, so that the adjusting gear 463 drives the rotating cylinder 461 to rotate synchronously. Under the limiting effect of the connecting shaft 472 and the threaded driving effect of the external thread on the rotating cylinder 461 on the lifting plate 471, the lifting plates 471 on both sides move upward synchronously, thereby driving the balancing rod 48 to rise together and controlling the inclination of the balancing rod 48. Then, after each test is completed, the position of the adjustment seat 41 is adjusted, and then the next set of tests is continued. After repeating until it is completely completed, according to each test process, the system directly draws a schematic diagram of the inclination curve of the balance rod 48 during the test time and a schematic diagram of the lifting curve of the lifting plate 471 during the test time, and judges the consistency of all the hollow blades 31 on the same hot axis 3 through overlapping comparison.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, internal communication between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The above is a detailed introduction to a stirring blade detection device and a detection method for a hollow blade dryer provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A stirring blade detection device for a hollow blade dryer, comprising: A testing platform (1), wherein an operating terminal (11) with a PLC controller is installed on the testing platform (1), and a fixing slot is provided on the testing platform (1); A fixing assembly (2), wherein the fixing assembly (2) is provided with two groups, each of which is located on two sides of the fixing groove; a heat shaft (3) is installed between the two groups of fixing assemblies (2); and a plurality of hollow blades (31) are distributed on the heat shaft (3); It is characterized by further comprising: A detection mechanism (4), the detection mechanism (4) comprising an adjustment seat (41), a column (42), a lifting seat (43), a movable arm (44), a measuring component (45), an output component (46), a feedback component (47) and a balancing rod (48); The adjusting seat (41) is slidably adjusted along the side wall of the fixing groove, two columns (42) are provided and both are vertically mounted on the adjusting seat (41), the lifting seat (43) is slidably adjusted along the vertical direction of the column (42), and both sides of the lifting seat (43) are provided with movable arms (44) that are movable and adjustable along the horizontal direction, and the measuring component (45) is arranged through the movable arm (44), one end of the measuring component (45) is elastically arranged on one side of the movable arm (44) and is always in contact with the fan-shaped side wall of the hollow blade (31), and the other end of the measuring component (45) is arranged along the length direction of the lifting seat (43). The output assembly (46) is arranged on one side of the column (42) in the vertical direction, and the bottom end of the output assembly (46) is arranged with the measuring assembly (45) through meshing transmission. The output assembly (46) acts on the feedback assembly (47) and makes the feedback assembly (47) move in the vertical direction above the column (42). The balance bar (48) is arranged between the feedback assemblies (47) on both sides, and the inclination degree of the balance bar (48) reflects whether the thickness changes of the two hollow blades (31) in the same group of tests are consistent.

2. A stirring blade detection device for a hollow blade dryer according to claim 1, characterized in that: The fixing assembly (2) comprises a movable seat (21), a support seat (22) and an electric cylinder (23); the movable seat (21) is arranged on the detection platform (1) and is slidably adjusted along the length direction of the detection platform (1); two electric cylinders (23) are provided and are both installed on the detection platform (1); the output end of the electric cylinder (23) is connected to the side wall of the movable seat (21); the support seat (22) is fixed in the middle of the top surface of the movable seat (21); a bearing ring (221) is further provided on one side wall of the support seat (22); the end of the hot shaft (3) is installed in the bearing ring (221) and is fixed as a whole by a plurality of set screws.

3. A stirring blade detection device for a hollow blade dryer according to claim 2, characterized in that: A screw rod (13) is rotatably arranged in the fixed groove, the screw rod (13) penetrates the adjustment seat (41) and is threadedly engaged therewith, guide rods (12) are fixedly installed between the side walls of the fixed groove on both sides of the screw rod (13), the guide rods (12) penetrate the adjustment seat (41) and are in sliding contact therewith, a distance sensor is embedded on the top surface of the column (42), the distance sensor is connected to the PLC controller via an electrical signal, and a screw rod (49) is rotatably arranged on one side of the column (42) along the vertical direction.

4. The stirring blade detection device for a hollow blade dryer according to claim 3, characterized in that: A side platform 1 (431) and a side platform 2 (433) are respectively mounted on the vertical side walls on both sides of the lifting seat (43); two dovetail grooves 1 are provided on the side platform 1 (431); two driving gears (434) and two transmission gears (435) that mesh with each other are provided on the side platform 2 (433); the two driving gears (434) are located between the two transmission gears (435); and a rotating motor 3 is connected to the bottom of one of the driving gears (434); the rotating motor 3 is mounted on the bottom wall of the side platform 2 (433); Guide grooves (432) are provided on the other two vertical side walls of the lifting seat (43), and the movable arm (44) is slidably arranged between the inner walls of the guide grooves (432). A fixing hole (441) is provided on the movable arm (44) along its length direction, and a tooth groove (44) meshing with the transmission gear (435) is also provided on one side wall of the movable arm (44) along its length direction, and the tooth groove (44) and the fixing hole (441) are not located at the same level.

5. The stirring blade detection device for a hollow blade dryer according to claim 4, characterized in that: The measuring assembly (45) comprises an adjusting arm 1 (451), an adjusting arm 2 (452), a spring rod (453) and a measuring head (454); the adjusting arm 2 (452) is arranged in an "L"-shaped structure; a dovetail-shaped guide bar 1 is arranged on the adjusting arm 1 (451); a dovetail-shaped guide bar 2 is arranged on the bottom wall of the adjusting arm 2 (452); and a dovetail groove 2 is also arranged on the side wall of the adjusting arm 2 (452); the guide bar 1 slides between the inner walls of the dovetail groove 2; and the guide bar 2 slides between the inner walls of the dovetail groove 1; One end of the spring rod (453) is connected to the measuring head (454), and the other end of the spring rod (453) is provided with a cylindrical connecting disk, which is fixed on the adjusting arm 1 (451). The spring rod (453) penetrates the inner wall of the movable arm (44) and is in sliding contact with the inner wall. An adjusting spring is also provided between the measuring head (454) and the movable arm (44), and the adjusting spring is sleeved on the outside of the spring rod (453).

6. The stirring blade detection device for a hollow blade dryer according to claim 5, characterized in that: The output assembly (46) comprises a rotating cylinder (461), a key shaft (462) and an adjusting gear (463); the bottom end of the key shaft (462) passes through the adjusting gear (463) and is integrally connected thereto; the bottom end of the key shaft (462) extends to the side platform (431) and is rotatably connected thereto; the adjusting gear (463) is located between the adjusting arms (452) on both sides; the two adjusting arms (452) are each provided with a tooth groove (463); the tooth groove (463) is meshed with the adjusting gear (463) for transmission; The key shaft (462) is always arranged in a vertical state, and the key shaft (462) penetrates the rotating cylinder (461) and is slidably arranged therewith by means of a key connection. An external thread is provided on the outer surface of the rotating cylinder (461), and a connecting groove (4611) is also provided on the outer surface of the rotating cylinder (461) near the bottom end. A limiting convex disc connected to the rotating cylinder (461) is provided on the top end. A horizontally arranged support seat is installed on one side of the vertical side wall of the column (42), and an annular connecting shaft (472) bearing is embedded at the end of the support seat. The connecting shaft (472) bearing is rotatably arranged between the inner walls of the connecting groove (4611). When the lifting seat (43) performs lifting and lowering motion in the vertical direction, the key shaft (462) performs sliding lifting and lowering motion along the inner wall of the rotating cylinder (461) synchronously. When the lifting seat (43) moves to the lowest position, the top end of the key shaft (462) is located in the rotating cylinder (461) but does not separate. When the lifting seat (43) moves to the highest position, the key shaft (462) penetrates the rotating cylinder (461).

7. The stirring blade detection device for a hollow blade dryer according to claim 6, characterized in that: The feedback assembly (47) comprises a lifting plate (471), a connecting shaft (472) and a limiting shaft (473); the lifting plate (471) is arranged in an "L"-shaped structure; the top end of the connecting shaft (472) is fixed to the bottom wall of the lifting plate (471); a guide block is arranged at the bottom end of the connecting shaft (472); the guide block and the connecting shaft (472) are both slidably adjusted along the vertical inner wall of the column (42); the rotating cylinder (461) passes through the lifting plate (471) and is threadedly coupled with the lifting plate (471) through an external thread; one end of the limiting shaft (473) is fixed to the end wall of the lifting plate (471); and the limiting shaft (473) is provided with two limiting plates connected thereto.

8. The stirring blade detection device for a hollow blade dryer according to claim 7, characterized in that: The balancing rod (48) is provided with two symmetrically arranged second fixing holes (482) along its length direction; the connecting shaft (472) passes through the second fixing hole (482) and is in sliding contact with the inner wall; the limiting plate is able to be in sliding contact with the side wall of the balancing rod (48) as the connecting shaft (472) moves; an inclination sensor (481) is also embedded on the side wall of the balancing rod (48) at the middle position; the inclination sensor (481) is connected to the PLC controller via an electrical signal.

9. The detection method of the stirring blade detection device for the hollow blade dryer according to claim 8, characterized in that: The following steps are involved: S1. First, adjust the positions of the two fixing components (2) according to the length of the hot shaft (3), and position the hot shaft (3) between the bearing rings (221) on both sides, and fix the hot shaft (3) after adjusting the test angle; S2. Next, the lifting seat (43) is adjusted to a corresponding test height, and the measuring head (454) is adjusted to a corresponding test position, so that before the test, the measuring head (454) is located at the thickest position of the hollow blade (31); S3. Subsequently, the movement process of the lifting seat (43) and the movable arm (44) is set according to the curvature change of the fan-shaped side wall of the hollow blade (31), and the movement of the lifting seat (43) and the movable arm (44) is controlled at the same time so that the route of the movement of the measuring head (454) driven by them conforms to the trajectory of the side wall of the hollow blade (31). As the thickness of the fan-shaped side wall of the hollow blade (31) changes, the measuring head (454) always contacts the side wall of the hollow blade (31) and drives the second adjustment arm (452) to move linearly on the second side platform (433), so that the adjustment gear (463) drives the rotating cylinder (461) to rotate synchronously and adjust. Under the action of the connecting shaft (472), the lifting plates (471) on both sides move upward synchronously, thereby controlling the inclination degree of the balance bar (48); S4. Then, after each test is completed, the position of the adjustment seat (41) is adjusted, and the next set of tests is continued. After the test is completely completed, the system directly draws a schematic diagram of the inclination curve of the balance rod (48) during the test time and a schematic diagram of the lifting curve of the lifting plate (471) during the test time according to each test process, and determines the consistency of all hollow blades (31) on the same hot axis (3) through overlapping comparison.

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