A stirring blade detection device and detection method for a hollow blade dryer

Abstract

The present invention relates to the technical field of hollow blade dryers, and in particular to a stirring blade detection device and a detection method for a hollow blade dryer, which solves the shortcomings of the prior art. The detection device includes a detection platform, a fixing component and a detection mechanism. An operating 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 slot. A hot shaft is installed between the two groups of fixing components, and a number of hollow blades are distributed on the hot 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 adjustment seat slides and adjusts along the side wall of the fixing slot. Two columns are provided and are both vertically installed on the adjustment seat. Compared with the prior art, the present invention can effectively detect whether there is a difference in the thickness change of the hollow blades on the same hot shaft.

Description

Technical Field

[0001] The present 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] The hollow paddle dryer is a highly efficient drying device comprised of several key components: a housing, a heat shaft, paddles, a top cover, a transmission mechanism, a rotary joint, and other parts. The heat shaft is the key component of the wedge-shaped paddle dryer, with a hollow interior designed to allow for the passage of heat transfer. The paddles, welded to the heat shaft and also hollow, serve as the primary heat transfer surface within the dryer. The paddles consist of two fan-shaped, sloped side panels, a triangular arc cover, a rectangular rear cover with a triangular base, and auxiliary stirring blades connected to the rectangular rear cover.

[0003] Chinese patent publication number CN203928688U discloses a paddle dryer and its paddle structure. The stirring blade is a wedge-shaped hollow fan-shaped ring with a certain thickness. The thickness of the fan-shaped stirring blade gradually becomes thicker 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. However, 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:

[0007] A stirring blade detection device for a hollow blade dryer includes a detection platform, a fixing component and a detection mechanism. An operating terminal with a PLC controller is installed on the detection platform, and a fixing slot is provided on the detection platform.

[0008] The fixing components are provided in two groups, which are respectively located on both sides of the fixing slot. A hot shaft is installed between the two groups of fixing components, and a plurality of hollow blades are distributed on the hot shaft.

[0009] 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;

[0010] 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 arm for adjusting movement in the horizontal direction is provided on both sides of the lifting seat. The measuring assembly is arranged on the movable arm. One end of the measuring assembly 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. The other end of the measuring assembly moves and adjusts along the length direction of the lifting seat to control the power input of the output assembly. The output assembly is arranged on one side of the column in the vertical direction, and the bottom end of the output assembly and the measuring assembly are engaged with each other. The output assembly acts on the feedback assembly and makes the feedback assembly move vertically above the column. The balance bar is arranged between the feedback assemblies 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.

[0011] 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 provided on one side wall of the support. The end of the hot shaft is installed in the bearing ring and is fixed together by multiple set screws.

[0012] In one embodiment, a screw rod 1 is rotatably provided in the fixed groove, the screw rod 1 passes through the adjustment seat and is threadedly engaged 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 pass through 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 provided on one side of the column along the vertical direction.

[0013] In one embodiment, a side platform 1 and a side platform 2 are respectively installed on two vertical side walls of the lifting base, 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 provided 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.

[0014] 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 is also provided on one side wall of the movable arm along its length direction for engaging with the transmission gear. The tooth groove and the fixing hole are not located at the same horizontal height.

[0015] In one embodiment, the measuring assembly includes a first adjusting arm, a second adjusting arm, a spring rod, and a measuring head. The second adjusting arm is arranged in an L-shaped structure. A first dovetail-shaped guide bar is provided on the first adjusting arm, a second dovetail-shaped guide bar is provided on the bottom wall of the second adjusting arm, and a second dovetail groove is further provided on the side wall of the second adjusting arm. The first guide bar slides between the inner walls of the second dovetail groove, and the second guide bar slides between the inner walls of the first dovetail groove.

[0016] One end of the spring rod is connected to the measuring head, and a cylindrical connecting disk is provided on the other end of the spring rod. The connecting disk is fixed on the 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 provided between the measuring head and the movable arm, and the adjusting spring is sleeved on the outside of the spring rod.

[0017] 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 integrally connected thereto. 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. Both adjusting arms 2 are provided with a tooth groove 2, which meshes with the adjusting gear for transmission.

[0018] The key shaft is always arranged in a vertical state, and the key shaft passes through the rotating cylinder and is slidably connected to it by a key. 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 to the rotating cylinder is provided on the top of the rotating cylinder. A horizontally arranged support seat is installed on one of the vertical side walls of the column. An annular connecting bearing is embedded at the end of the support seat. The connecting bearing is rotatably arranged between the inner walls of the connecting groove.

[0019] When the lifting seat moves up and down in the vertical direction, the key shaft moves up and down synchronously by sliding along the inner wall of the rotating cylinder. When the lifting seat moves to the lowest position, the top end of the key shaft is located in the rotating cylinder but does not separate. When the lifting seat moves to the highest position, the key shaft penetrates the rotating cylinder.

[0020] In one embodiment, the feedback assembly includes a lifting plate, a connecting shaft and a limiting 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 provided 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 is engaged with the lifting plate thread transmission through an external thread. One end of the limiting shaft is fixed on the end wall of the lifting plate, and two limiting plates connected to it are provided on the limiting shaft.

[0021] In one embodiment, the balance bar is provided with two symmetrically arranged fixing holes 2 along its length direction, the connecting shaft passes through the fixing hole 2 and is in sliding contact with the inner wall, and the limiting plate can be in sliding contact with the side wall of the balance bar as the connecting shaft moves. An inclination sensor is also embedded in the side wall at the middle position of the balance bar, and the inclination sensor is connected to the PLC controller through an electrical signal.

[0022] A method for detecting a stirring blade detection device for a hollow blade dryer, comprising the following steps:

[0023] 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. After adjusting the test angle of the hot axis, fix it;

[0024] S2. Next, adjust the lifting base to the corresponding test height, and adjust the measuring head to the corresponding test position, so that before the test, the measuring head is located at the thickest position of the hollow blade;

[0025] S3. Subsequently, the movement process of the lifting seat and movable arm is set according to the curvature change of the hollow blade's fan-shaped side wall. The movement of the lifting seat and movable arm is simultaneously controlled so that the path of the measuring head driven by them conforms to the trajectory of the hollow blade's side wall. As the thickness of the hollow blade's fan-shaped side wall changes, the measuring head always contacts the hollow blade's side wall and drives the second adjustment arm to move linearly on the second side platform, thereby causing the adjustment gear to drive the rotating cylinder to rotate and adjust synchronously. Under the action of the connecting shaft, the lifting plates on both sides move upward synchronously, thereby controlling the inclination of the balance bar.

[0026] S4. Then, after each test is completed, the position of the adjustment seat 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 bar during the test time and a schematic diagram of the lifting curve of the lifting plate during the test time according to each test process. The consistency of the detection of all hollow blades on the same hot axis is determined by overlapping comparison.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] By setting up 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. The degree of elastic change of the measuring head during the measurement process is then used to control the rotational movement of the output assembly, so that the feedback assemblies on both sides can achieve synchronous lifting and lowering movement under the action of the threaded transmission. The inclination degree of the balance bar is then used to judge whether the thickness changes of the two hollow blades in each group of tests are consistent. Whether the lifting curve diagram of the lifting plate overlaps with the inclination curve diagram of the balance bar in multiple tests is then used to judge whether the thickness changes of all hollow blades on the same hot axis are consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0030] In the attached figure:

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the fixing assembly of the present invention;

[0033] Figure 3 Schematic diagram of the structure of the test mechanism of the present invention in its initial test state;

[0034] Figure 4 It is a structural schematic diagram of the lifting seat and its auxiliary components of the present invention;

[0035] Figure 5 It is a schematic structural diagram of the measuring component and the output component of the present invention;

[0036] Figure 6 is a schematic structural diagram of the feedback component of the present invention;

[0037] Figure 7 yes Figure 3 Schematic diagram of the side structure.

[0038] In the figure: 1. Test table; 11. Operation terminal; 12. Guide rod; 13. Screw rod 1; 2. Fixing assembly; 21. Moving seat; 22. Support; 221. Bearing ring; 23. Electric cylinder; 3. Hot shaft; 31. Hollow blade; 4. Test 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 bar; 481. Inclination sensor; 482. Fixing hole two; 49. Screw two. DETAILED DESCRIPTION

[0039] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0040] 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 provided on the detection platform 1 along its length direction, a screw 13 is rotatably provided in the fixing groove, one end of the screw 13 is connected to a rotating motor 1 (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 provided on both sides of the screw 13, the guide rods 12 are located in the fixing groove, fixing components 2 are provided 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. A scraper is also installed on the thicker end of the hollow blade 31 via 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. Only the change in the thickness of the overall fan-shaped side wall of the hollow blade 31 is detected. A detection mechanism 4 is slidably provided between the side walls of the fixed groove and moves along the length direction of the fixed groove. The detection mechanism 4 simultaneously tests two adjacent hollow blades 31 as a group each time.

[0041] In addition, an operation terminal 11 with a PLC controller is fixedly installed on the top surface of the testing platform 1.

[0042] like Figure 2 As shown, the fixing assembly 2 includes a moving seat 21, a support 22 and an electric cylinder 23;

[0043] The movable seat 21 moves in a straight line on the top surface of the detection table 1. Two electric cylinders 23 connected to and linearly driving the movable seat 21 are provided on one side of the movable seat 21. The electric cylinder 23 is installed on the detection table 1 by screws. The support 22 is fixed to the middle of the top surface of the movable seat 21 by bolts. A bearing ring 221 is installed on one side wall of the support 22 by screws. A plurality of set screws are threadedly connected on the circumferential outer surface of the bearing ring 221.

[0044] 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.

[0045] 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;

[0046] The adjustment seat 41 is slidably set between the side walls of the fixed groove, the guide rod 12 passes through the adjustment seat 41 and slides in 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 are both 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.

[0047] A lifting seat 43 is slidingly provided along the outer surface of the column 42, and a guide groove 432 is provided on both sides of the vertical side walls of the lifting seat 43, and a screw hole 1 is provided on the lifting seat 43 along the vertical direction. A screw rod 2 49 is provided in the screw hole 1, and the screw rod 2 49 is rotatably provided 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 provided between the inner walls of the axle seat (there is no thread provided at the top end of the screw rod 2 49), and the bottom end of the screw rod 2 49 is connected to a rotating motor 2 for driving it, and the rotating motor 2 is built between the inner walls of the adjustment seat 41 (not shown in the figure).

[0048] The other two vertical side walls of the lifting seat 43 are respectively mounted with a side platform 1 431 and a side platform 2 433. The side platform 1 431 is provided with two dovetail grooves 1 along its length. The upper portion of the side platform 2 433 is provided with two driving gears 434 and two transmission gears 435 which are meshed with each other and are rotatably connected by shafts. The two driving gears 434 are located between the two transmission gears 435, and one of the driving gears 434 is located below the lower portion (hereinafter referred to as Figure 4 (As shown, a rotating motor 3 is installed at the bottom of the upper driving gear 434 for explanation.) 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 .

[0049] 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 engaged 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 two movable arms 44 on the same column 42 have the same movement direction.

[0050] It should be further explained that the rotary 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 raising and lowering the lifting seat 43. When the screw 2 49 rotates clockwise, the raising process is completed, and when it rotates counterclockwise, the lowering process is completed; the rotary motor 3 is started by the PLC controller, and the rotary motor 3 drives the driving gear 434 to rotate, so that the driving gear 434 cooperates with the other driving gear 434 to simultaneously drive the transmission gears 435 on both sides to rotate, and then the gear teeth 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 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 move toward each other simultaneously.

[0051] The measuring assembly 45 includes an adjusting arm 1 451 , an adjusting arm 2 452 , a spring rod 453 and a measuring head 454 ;

[0052] 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.

[0053] 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.

[0054] 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 by a thread. The measuring head 454 is arranged 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.

[0055] It is worth noting that the lifting speed 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 lifting plates 471 on both sides can achieve synchronous and stable lifting movement.

[0056] 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. 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.

[0057] 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 Take the thickness change of the left hollow blade 31 as an example to illustrate. 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 moves synchronously with the adjusting arm 1 451.

[0058] The output assembly 46 includes a rotating cylinder 461, a key shaft 462 and an adjusting gear 463;

[0059] The adjusting gear 463 is arranged between the side walls of the two adjusting arms 452. A tooth groove 2 is provided on the adjusting arm 452 (not shown in the figure). The adjusting gear 463 is always engaged 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 synchronized by a key connection. The bottom end of the key shaft 462 is connected to the side platform 1 431 for rotation via an axis. The rotating cylinder 461 is arranged outside the key shaft 462 and is slidably connected therebetween via a key connection. , 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 disc 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. 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.

[0060] The key shaft 462 and the rotating cylinder 461 will never be separated.

[0061] The feedback assembly 47 includes a lifting plate 471 , a connecting shaft 472 and a limiting shaft 473 ;

[0062] 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. Two limiting plates fixed thereto are installed on the connecting shaft 472. The top end of the connecting shaft 472 is connected as a whole with the bottom wall of the lifting plate 471 end, and the bottom end of the connecting shaft 472 is slidably arranged between the inner walls of the column 42 in 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 in the vertical direction between the inner walls of the column 42, thereby limiting 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 in threaded transmission.

[0063] A distance sensor (not shown in the figure) is embedded on the top surface of the column 42 at a position facing the bottom wall of the lifting plate 471 , and the distance sensor is connected to the PLC controller via an electrical signal.

[0064] It is worth noting that since the test direction is from the thicker end to the narrower end of the hollow blade 31, and the movement directions of the two sets 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 to face opposite directions), when the measuring head 454 is testing 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 sets of test results consistent, which is more conducive to comparison.

[0065] 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, thereby causing the adjusting gear 463 located between the two adjusting arms 452 to rotate 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 also driven synchronously 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 adjusting movements in the vertical direction.

[0066] A balance bar 48 is also provided 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 slides therewith. The two limit plates on the connecting shaft 472 are respectively 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.

[0067] It should be further explained that as the lifting plates 471 on both sides rise and fall synchronously, the balance bar 48 is also raised and lowered accordingly. When the thicknesses of the two hollow blades 31 under test are inconsistent at the same location, the lifting plates 471 on both sides will have a height deviation, 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 via 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 (i.e., with the test time as the X-axis and the inclination value detected in real time by the inclination sensor 481 as the Y-axis). The test ends when the test reaches the position with the narrowest thickness. During the test, the distance sensor continuously detects the movement distance of the lifting plate 471 and records it in real time. The built-in program of the PLC controller then draws a schematic diagram of the lifting curve (i.e., with the test time as the X-axis and the movement distance of the lifting plate 471 as the Y-axis). Then, by overlapping and comparing the schematic diagrams after each test, the consistency of all hollow blades 31 is determined.

[0068] Working principle:

[0069] First, adjust the positions of the two fixing components 2 according to the length of the hot shaft 3, and adjust the position of the movable base 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, it is fixed. When adjusting the angle, try to ensure that the two scrapers in the same test group are close to the vertical mid-perpendicular line (that is, the angle between the scrapers and the vertical direction is minimized);

[0070] Next, the lifting base 43 is adjusted to the corresponding test height, that is, by driving the screw 2 49, the lifting base 43 is controlled to move in the vertical direction until the height position of the measuring head 454 is flush with the middle position of the end with the larger thickness of the hollow blade 31, and by controlling the horizontal movement of the movable arm 44, the measuring head 454 is synchronously driven to the corresponding test position, so that before the test, the measuring head 454 is located at the thickest position of the hollow blade 31 (i.e. Figure 7 Position A is shown, and position A is the midpoint of the fan-shaped side wall corresponding to the thickest part of the hollow blade 31);

[0071] 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 so that the movement path of the measuring head 454 driven by them conforms to the side wall trajectory of the hollow blade 31. 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 point where the moving direction of the movable arm 44 changes is that a horizontal straight line is made along the center of the thermal axis 3. When the measuring head 454 passes through this straight line, The movable arm 44 changes its direction of movement. As the thickness of the fan-shaped side wall of the hollow blade 31 changes, the measuring head 454 remains in contact with the side wall of the hollow blade 31 and drives the second adjustment arm 452 to move linearly on the second side platform 433, thereby causing the adjustment gear 463 to drive the rotating cylinder 461 to rotate and adjust 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 balance bar 48 to rise together and controlling the degree of inclination of the balance bar 48.

[0072] Then, after each test is completed, the position of the adjustment seat 41 is adjusted, and the next set of tests is continued. After 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 the detection of all hollow blades 31 on the same hot axis 3 through overlapping comparison.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or interconnected connections; they can refer to direct connections, internal connectivity between two components, or an interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application based on the specific circumstances.

[0074] The above is a detailed introduction to the stirring blade detection equipment and detection method for a hollow blade dryer provided in the embodiments 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 solutions and core ideas 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 cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions 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 located on either side of the fixing groove; a hot shaft (3) is installed between the two groups of fixing assemblies (2); and a plurality of hollow blades (31) are distributed on the hot 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 fixed groove, two columns (42) are provided and are both 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 the movable arm (44) that is adjusted to move in the horizontal direction, the measuring component (45) is arranged on 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 power input of the output component (46) is controlled by adjusting the movement in the direction of the movement, the output component (46) is arranged on one side of the column (42) in the vertical direction, and the bottom end of the output component (46) and the measuring component (45) are arranged by meshing transmission, the output component (46) acts on the feedback component (47) and causes the feedback component (47) to move in the vertical direction above the column (42), the balance bar (48) is arranged between the feedback components (47) on both sides, and the inclination degree of the balance bar (48) is used to reflect whether the thickness changes of the two hollow blades (31) in the same group of tests are consistent; The output assembly (46) includes 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 connected thereto as a whole. 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 (2), and the tooth groove (2) is engaged with the adjusting gear (463) for transmission. The key shaft (462) is always arranged in a vertical state, and the key shaft (462) passes through 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 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 vertical side wall of the column (42). 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). A tilt sensor (481) is also embedded on the side wall of the balance bar (48) at a middle position thereof, and the tilt sensor (481) is connected to the PLC controller via an electrical signal.

2. The 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 (22) and an electric cylinder (23). The movable seat (21) is arranged on the detection table (1) and is slidably adjusted along the length direction of the detection table (1). Two electric cylinders (23) are provided and are both installed on the detection table (1). The output end of the electric cylinder (23) is connected to the side wall of the movable seat (21). The support (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 (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. The stirring blade detection device for a hollow blade dryer according to claim 2, characterized in that: A screw rod (13) is rotatably provided in the fixing groove, and the screw rod (13) passes through the adjustment seat (41) and is threadedly engaged therewith. Guide rods (12) are fixedly installed between the side walls of the fixing groove on both sides of the screw rod (13), and the guide rods (12) pass through the adjustment seat (41) and are in sliding contact therewith. A distance sensor is embedded on the top surface of the column (42), and the distance sensor is connected to the PLC controller through an electrical signal. A screw rod (49) is rotatably provided 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 installed on the vertical side walls on both sides of the lifting seat (43), two dovetail grooves 1 are opened on the side platform 1 (431), and two driving gears (434) and two transmission gears (435) that are meshed with each other are provided on the side platform 2 (433), the two driving gears (434) are located in the middle of the two transmission gears (435), and a rotating motor 3 is connected to the bottom of one of the driving gears (434), and the rotating motor 3 is installed 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) is also provided on one side wall of the movable arm (44) along its length direction to engage with the transmission gear (435). The tooth groove (44) and the fixing hole (441) are not located at the same horizontal height.

5. The stirring blade detection device for a hollow blade dryer according to claim 4, characterized in that: The measuring assembly (45) includes an adjusting arm 1 (451), an adjusting arm 2 (452), a spring rod (453) and a measuring head (454), wherein 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 provided 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 a cylindrical connecting disk is provided on the other end of the spring rod (453). The connecting disk is fixed on the adjusting arm (451), and the spring rod (453) passes through the inner wall of the movable arm (44) and is in sliding contact with it. 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: When the lifting seat (43) performs a lifting motion in the vertical direction, the key shaft (462) performs a sliding lifting 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) 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. The top end of the connecting shaft (472) is fixed to the bottom wall of the lifting plate (471), and a guide block is provided 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 to 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 fixing holes (482) along its length direction. The connecting shaft (472) passes through the fixing hole (482) and is in sliding contact with the inner wall. The limiting piece can be in sliding contact with the side wall of the balancing rod (48) as the connecting shaft (472) moves.

9. The detection method of a stirring blade detection device for a 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. After adjusting the test angle of the hot shaft (3), fix it; 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 the measuring head (454) is located at the thickest position of the hollow blade (31) before the test; 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 movement path of the measuring head (454) driven by the lifting seat (43) and the movable arm (44) conforms to the side wall trajectory 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 regulating arm (452) to move linearly on the second side platform (433), so that the regulating gear (463) drives the rotating cylinder (461) to rotate and adjust synchronously. 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 judges the consistency of all the hollow blades (31) on the same hot axis (3) by overlapping comparison.

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