A disc dryer rake blade wear test system and test method

Abstract

The present invention relates to the technical field of disc dryer component detection, and in particular to a disc dryer rake blade wear test system and a test method thereof, which solves the shortcomings existing in the prior art. The test system comprises a fixed platform, a rake blade adjustment mechanism and a friction simulation mechanism, a side platform is arranged on one side of the fixed platform, a control terminal with a PLC controller is installed on the side wall of the side platform, a fixed frame 1 is installed on the fixed platform, a mounting shaft is arranged on the fixed frame 1, and a turntable is rotatably arranged on the fixed platform, the rake blade adjustment mechanism comprises a fixed frame 2, rake blades and a connecting frame, one end of the fixed frame 2 is fixed on the mounting shaft, and a fixed groove is arranged on the other end, and a lifting and adjusting component is arranged in the fixed groove. Compared with the prior art, the present invention can effectively simulate the friction between the rake blade and the disc and the material in actual work through the system, thereby improving the accuracy and integrity of the detection.

Description

Technical Field

[0001] The invention relates to the technical field of disc dryer component detection, and in particular to a disc dryer rake blade wear test system and a test method thereof. Background Art

[0002] The disc dryer is composed of multiple layers of alternating large and small metal discs, which are arranged from top to bottom to form a channel for the material to flow. The movement of the rakes and discs in the disc dryer is closely coordinated and mutually coordinated, so as to achieve continuous and efficient drying of wet materials.

[0003] The rake blades are installed on the rake arms fixed on the main shaft. They rotate with the rotation of the main shaft. This movement enables the rake blades to continuously turn over the materials, promoting uniform mixing and heat transfer of the materials. During the rotation process, the rake blades continuously push the materials from the inner edge to the outer edge of the disc, forming an exponential spiral material flow path. On the small disc, the materials are pushed to the outer edge and fall into the outer edge of the large disc below; on the large disc, the materials move to the inner edge under the push of the reverse rake blades and fall into the next layer of small discs from the middle drop port. In this way, the materials can flow continuously through the entire dryer.

[0004] However, during the operation of the rake, the friction between the rake and the disc, as well as the friction between the material and the side of the rake when it moves, are factors that affect the wear performance of the rake. In addition, the angle between the rake and the disc is also one of the factors affecting its wear performance. However, the current testing equipment for rakes cannot meet this related test requirement. Therefore, it is necessary to provide a rake wear test system and test method for a disc dryer, which can achieve the purpose of testing the wear performance of the rake. Summary of the invention

[0005] The object of the present invention is to provide a rake blade wear testing system and a testing method for a disc 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 rake blade wear test system for a disc dryer comprises a fixed platform, a rake blade adjustment mechanism and a friction simulation mechanism, wherein a side platform is arranged on one side of the fixed platform, a control terminal with a PLC controller is installed on the side wall of the side platform, a fixed frame 1 is installed on the fixed platform, a mounting shaft is arranged on the fixed frame 1, and a turntable is rotatably arranged on the fixed platform;

[0008] The rake blade adjustment mechanism includes a second fixing frame, a rake blade and a connecting frame, one end of the second fixing frame is fixed to the mounting shaft, and the other end thereof is provided with a fixing groove, a lifting and adjusting assembly is provided in the fixing groove, the connecting frame is provided in the middle of the bottom of the lifting and adjusting assembly and moves synchronously with the lifting and adjusting assembly, the rake blade is provided below the connecting frame by rotating the rotating shaft, and the rotating shaft rotates and adjusts synchronously with the lifting and lowering movement of the lifting and adjusting assembly;

[0009] The friction simulation mechanism includes a fixed frame three, an adjustment seat and a friction member. Two fixed frames three are provided and are both mounted on the side platform. A fixed shaft is provided on the fixed frame three. An adjustment shaft is slidably provided between the fixed shafts on both sides. A round table is provided on the side seat. A trajectory adjustment component is rotatably provided on the round table. The adjustment seat is provided above the trajectory adjustment component and slides on the adjustment shaft. The rectangular motion trajectory of the adjustment seat is controlled by the reciprocating motion of the trajectory adjustment component. A rotating handle is rotatably provided on the adjustment seat. The friction member is synchronously connected with one end of the rotating handle through a synchronous shaft two.

[0010] The bottom end of the rake blade can be in frictional contact with the turntable, and one side surface of the friction member can be in frictional contact with one side surface of the rake blade.

[0011] In one embodiment, the fixed platform is provided with a plurality of limiting rings, the turntable is rotatably arranged between the inner side walls of the limiting rings, and the turntable is also rotatably penetrated between the opposite side walls of the fixed frame 1, a driving gear is also installed on the fixed platform, and a tooth groove is provided on the inner ring surface of the turntable for mutually meshing and transmitting with the driving gear;

[0012] The first fixing frame is in a "U"-shaped structure, and a fixing support is installed on the top surface thereof, and one end of the installation shaft is fixed between the inner walls of the fixing support.

[0013] In one embodiment, the lifting and adjusting assembly includes a U-shaped seat, a second U-shaped frame, a synchronous shaft and a connecting arm. The U-shaped seat is provided with two and both are slidably adjusted along the side walls on both sides of the fixed groove. The synchronous shaft is rotatably provided between the side walls of the U-shaped seats on both sides. The synchronous shaft is provided with a rotation angle sensor and a synchronous wheel that rotates synchronously therewith. The rotation angle sensor is connected to the PLC controller through an electrical signal.

[0014] A linear motor is installed on the outer wall of the second fixing frame above the fixing groove, the second U-shaped frame is installed on the end of the output shaft of the linear motor, and an adjusting gear is rotatably arranged in the middle of the second U-shaped frame, the adjusting gear is installed on the synchronous shaft 1 and rotates and adjusts synchronously therewith, and a connecting shaft 1 is also arranged between the second U-shaped frame and the U-shaped seat, and a rack meshing with the adjusting gear is also installed on one side of the second fixing frame;

[0015] The connecting arm is fixedly connected between the connecting frame and the U-shaped seat, and triangular supports are arranged on both sides of the bottom wall of the connecting frame. The rotating shaft is rotatably arranged between the triangular supports on both sides and a synchronous wheel 2 is installed on one end. The synchronous wheel 1 and the synchronous wheel 2 are connected by a synchronous belt, and a U-shaped frame 1 synchronized with it is arranged on the rotating shaft, and the rake blades are fixed between the side walls of the U-shaped frame 1.

[0016] In one embodiment, when the U-shaped frame 2 moves vertically downward with the linear motor, the U-shaped seat drives the connecting frame to descend synchronously. At the same time, the adjusting gear rolls downward along the rack and drives the synchronous shaft 1 to rotate, so that the rake blades are synchronously rotated and adjusted toward the side of the fixed frame 1 during the descending adjustment process.

[0017] In one embodiment, the trajectory adjustment assembly includes a rotating seat, a second connecting shaft and a rotating handle. The rotating seat is rotatably arranged above the center position of the truncated table through an axis connection. A movable shaft runs through the middle of the rotating seat. A limiting convex disc is arranged on one end of the movable shaft, and a connecting seat is installed on the other end thereof. A spring is also sleeved on the movable shaft, and one end of the spring contacts the side wall of the rotating seat, and the other end of the spring contacts the side wall of the connecting seat.

[0018] A second connecting shaft is rotatably arranged between the inner walls of the bottom end of the adjustment seat, the second connecting shaft is arranged in a "T"-shaped structure, and the bottom end of the second connecting shaft is fixed in the middle of the top surface of the connection seat, a through hole with an arc structure is opened on the adjustment seat, and a rotating handle is rotatably arranged on one side wall of the adjustment seat, and a synchronous shaft second is installed in one end of the rotating handle, the synchronous shaft second penetrates the friction member and is fixed thereto as a whole, and the synchronous shaft second slides and adjusts along the inner wall of the through hole;

[0019] Wherein, the longitudinal section of the friction member is a right-angle trapezoid.

[0020] In one embodiment, when the second synchronization shaft rotates to the bottom end position of the through hole, the inclined surface of the friction member contacts the top surface of the turntable;

[0021] When the rotating seat makes a circular motion, the connecting seat rotates synchronously and changes the distance between it and the rotating seat, and the friction member reciprocates in a rectangular track to achieve an intermittent friction process with one side of the rake blade.

[0022] A method for testing a rake blade wear test system of a disc dryer comprises the following steps:

[0023] S1. Install the rake blade vertically at the bottom of the U-shaped frame 1, so that the bottom end of the rake blade contacts the surface of the turntable, and one side vertical side wall of the friction member also contacts one side surface of the rake blade;

[0024] S2, control the turntable to rotate, so that rotational friction is generated between the turntable and the bottom end of the harrow blade, and also control the rotating seat to start circular motion, so that sliding friction is generated between the friction member and the side of the harrow blade. During the test, pause and adjust the angular position of the harrow blade and the friction member in turn as needed, and adjust them to the appropriate level so that sliding friction can be generated between the friction member and the harrow blade, and rotational friction can be generated between the harrow blade and the turntable;

[0025] S3. After the test is completed, the rake blade is removed and the thickness of the worn portion is measured to obtain the wear condition of the rake blade at different angles to the turntable.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0027] By arranging a rake blade adjustment mechanism and a friction simulation mechanism on a fixed platform and one side thereof, the rake blade is controlled to change the height position of the rake blade and the turntable while adjusting the angle with the turntable by the cooperation of the lifting and lowering adjustment components, so that the rake blade can always maintain a state of contact with the turntable during the test, and the reciprocating trajectory motion of the friction member is controlled by the friction simulation mechanism, so that the friction member and the rake blade can produce relative friction motion during the cyclic periodic motion process, thereby simulating the process of the material sliding to one side along the intersection of the disc and the rake blade in actual work. The present invention can effectively simulate the friction between the rake blade and the disc and the material in actual work through the system, thereby improving the accuracy and integrity of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] In the attached picture:

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a main structural schematic diagram of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the rake blade adjustment mechanism of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the friction simulation mechanism of the present invention.

[0034] In the figure: 1, fixed platform; 11, side platform; 111, control terminal; 12, limit ring; 13, driving gear; 2, turntable; 3, fixed frame 1; 31, fixed support; 32, mounting shaft; 4, rake blade adjustment mechanism; 41, fixed frame 2; 411, rack; 412, guide groove; 42, rake blade; 43, U-shaped seat; 44, connecting frame; 441, U-shaped frame 1; 45, synchronous wheel 1; 46, synchronous wheel 2; 47, U Frame 2; 471, adjusting gear; 472, connecting shaft 1; 48, synchronous shaft 1; 481, rotation angle sensor; 49, connecting arm; 5, friction simulation mechanism; 51, fixed frame 3; 511, fixed shaft; 52, rotating seat; 521, movable shaft; 522, connecting seat; 53, connecting shaft 2; 54, adjusting seat; 541, through hole; 55, rotating handle; 56, adjusting shaft; 57, friction part; 571, synchronous shaft 2. DETAILED DESCRIPTION

[0035] 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 material examples 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.

[0036] like Figure 1-2 As shown, the present invention provides a technical solution: a rake blade 42 wear test system for a disc dryer, comprising a fixed table 1, a turntable 2, a mounting shaft 32, a rake blade adjustment mechanism 4 and a friction simulation mechanism 5;

[0037] The fixed table 1 is in the form of a truncated cone, and a side table 11 connected to it is provided at its outer edge. A control terminal 111 with a PLC controller is installed on the side wall of the side table 11. At least three limit rings 12 are installed on the top surface of the fixed table 1 along its circumferential direction by means of clamping and fixing, and a "U"-shaped fixing frame 3 is also installed on one side of the top surface of the fixed table 1 by screws. A turntable 2 is rotatably arranged between the inner side walls of the limit rings 12. The turntable 2 is in the form of a circular ring. The turntable 2 also rotates between the inner side walls opposite to each other on both sides of the fixing frame 3. Moreover, tooth grooves are evenly provided on the inner ring surface of the turntable 2. A driving gear 13 meshing with the tooth groove is rotatably arranged on the top surface of the fixed table 1. A rotating motor 1 (not shown in the figure) connected to and driven by the driving gear 13 is installed between the inner walls of the fixed table 1 below the driving gear 13, and the driving gear 13 is used as the power output to control the circular motion of the turntable 2 on the surface of the fixed table 1.

[0038] A fixed support 31 is installed on the fixed frame 3 by screws, one end of the mounting shaft 32 is installed between the inner walls of the fixed support 31 in a threaded connection manner, one end of the rake blade adjustment mechanism 4 is installed on the mounting shaft 32, and the friction simulation mechanism 5 is arranged on the side platform 11.

[0039] like Figure 3 As shown, the rake blade adjustment mechanism 4 includes a fixing frame 2 41, rake blades 42, a connecting frame 44 and a lifting and lowering adjustment component, and the lifting and lowering adjustment component includes a U-shaped seat 43, a synchronous wheel 1 45, a synchronous wheel 2 46, a U-shaped frame 2 47, a synchronous shaft 1 48 and a connecting arm 49;

[0040] One end of the second fixing frame 41 is in a circular ring structure and is fixed to the mounting shaft 32 by screws. A "U"-shaped fixing groove is provided on the other end of the second fixing frame 41. Guide grooves 412 are provided on both sides of the fixing groove along the vertical direction on the second fixing frame 41. Guide blocks (not shown in the figure) are slidably provided in the guide grooves 412. U-shaped seats 43 are slidably provided along the side walls of the second fixing frame 41 on both sides of the fixing groove. Two guide blocks located on the same side as the U-shaped seat 43 are respectively welded to the side walls of the U-shaped seat 43. Connecting arms 49 (the connecting arms 49 cannot be movably adjusted) are installed on the side walls of the U-shaped seats 43 on both sides by fixing bolts. The other ends of the connecting arms 49 on both sides are also fixed together with the connecting frame 44 by fixing bolts, and triangular supports are welded on both sides of the bottom wall of the connecting frame 44. A rotating shaft that rotates synchronously with the inner walls of the U-shaped frame 441 passes through, and one end of the rotating shaft is rotatably set between the inner walls of the triangular supports on one side, and the other end of the rotating shaft passes through and rotates between the inner walls of the triangular supports on the other side, and a synchronous wheel 46 that rotates synchronously with the rotating shaft is also connected to this end of the rotating shaft by a key. The rake blade 42 is installed between the inner walls of the groove of the U-shaped frame 441 by fixing screws, and the bottom end of the rake blade 42 can be in friction contact with the upper surface of the turntable 2.

[0041] A linear motor is installed on the top surface of the fixing frame 2 41 at the top of the fixing groove by screws, a U-shaped frame 2 47 is installed on the end of the output shaft of the linear motor by screws, an adjusting gear 471 is rotatably arranged between the side walls of the U-shaped frame 2 47, connecting sleeves are installed on both side walls of the adjusting gear 471 by screws, the connecting sleeves are rotatably arranged between the inner walls of the U-shaped frame 2 47, a synchronous shaft 1 48 that rotates and adjusts synchronously with the adjusting gear 471 is passed through the middle, and a rotation angle sensor is installed on the synchronous shaft 1 48 481, the rotation angle sensor 481 is connected to the PLC controller through an electrical signal, a synchronous shaft 48 is rotatably arranged between the opposite side walls of the U-shaped seats 43 on both sides through a bearing, and a synchronous wheel 45 that rotates synchronously with the synchronous shaft 48 is installed on the synchronous shaft 48 through a key connection, the synchronous wheel 45 is located directly above the synchronous wheel 46 and a synchronous belt is connected therebetween, wherein shaft seats are welded on the top surfaces of the U-shaped seats 43 on both sides, and a connecting shaft 472 is inserted between the shaft seats and the side walls of the U-shaped frame 47.

[0042] In addition, a vertically arranged rack 411 is installed on the bottom wall of the fixing groove by screws, the adjusting gear 471 is meshed with the rack 411, and when the guide block on the U-shaped seat 43 is located at the top position of the guide groove 412, the bottom end of the rack 411 is in contact with the top surface of the connecting frame 44.

[0043] It should be further explained that the initial state is as follows Figure 3 As shown, the rake blade 42 is in a vertical state at this time, and its bottom end is in contact with the upper surface of the turntable 2, and the guide block on the U-shaped seat 43 is located at the top end of the guide groove 412;

[0044] When the contact angle between the rake blade 42 and the turntable 2 needs to be changed, the linear motor is started through the PLC controller to drive the U-frame 47 to move downward, so that the adjusting gear 471 rolls downward along the rack 411 synchronously with the descent of the U-frame 47, and drives the synchronous shaft 48 and the synchronous wheel 45 on the synchronous shaft 48 to rotate counterclockwise in the plane where they are located, and then drives the synchronous wheel 46 to rotate counterclockwise through the transmission effect of the synchronous belt, and then drives the rake blade 42 to rotate to one side in the direction of the fixed frame 3 by virtue of the synchronization of the rotating shaft. While the rake blade 42 rotates, the U-frame 441 drives the U-shaped seats 43 on both sides to slide down and adjust through the connecting shaft 472, thereby synchronously adjusting the height difference between the rake blade 42 and the turntable 2 to ensure that the rake blade 42 can be in a state of friction contact with the turntable 2. The linear motor can be stopped after adjusting to an appropriate level.

[0045] like Figure 4 As shown, the friction simulation mechanism 5 includes a fixed frame 3 51, an adjustment seat 54, a friction member 57 and a track adjustment assembly, and the track adjustment assembly includes a rotating seat 52, a connecting shaft 2 53 and a rotating handle 55;

[0046] A U-shaped fixing frame 41 is installed on both sides of the top surface of the side platform 11 by screws, and a fixing shaft 511 is clamped between the side walls of the fixing frame 41 along its length direction. An adjusting shaft 56 is slidably arranged between the fixing shafts 511 on both sides. Both ends of the adjusting shaft 56 are arranged in a sleeve-like structure and slide on the outer surface of the fixing shaft 511. The adjusting shaft 56 also passes through the top inner wall of the adjusting seat 54 and slides in contact with it.

[0047] An arc-shaped through hole 541 is provided on the adjustment seat 54, and a rotating handle 55 is rotatably provided on one side of the through hole 541 on the side wall of the adjustment seat 54. A rotating motor 2 for rotating and driving the rotating handle 55 is connected to one end of the rotating handle 55. The rotating motor 2 is built between the inner walls of the adjustment seat 54 (not shown in the figure), and a synchronous shaft 2 571 is installed between the inner walls of the other end of the rotating handle 55 by a threaded connection. The synchronous shaft 2 571 penetrates the friction member 57 and is connected thereto as a whole. The longitudinal section of the friction member 57 is a right-angled trapezoid, and one side edge of the friction member 57 is in sliding contact with the upper surface of the turntable 2. Granular protrusions (not shown in the figure) are distributed on the vertical side walls of the friction member 57 and can be in friction contact with one side of the rake blade 42.

[0048] A convex table which is connected to the side seat as a whole and is arranged in a raised manner is arranged on the top surface of the side seat. A rotating motor three (not shown in the figure) which drives the rotating seat 52 is connected to the bottom of the rotating seat 52. The rotating motor three is installed between the inner walls of the convex table. A movable shaft 521 passes through the middle of the rotating seat. A limiting convex disk is welded on one end of the movable shaft 521, and a connecting seat 522 is connected to the other end by screws. A spring is also sleeved on the movable shaft 521 between the connecting seat 522 and the rotating seat. A connecting shaft 2 53 of a "T"-shaped structure is welded in the middle of the top surface of the connecting seat 522. The top end of the connecting shaft 2 53 is rotatably arranged between the inner walls of the adjusting seat 54.

[0049] It should be further explained that the initial state of the friction simulation mechanism 5 is as follows: Figure 4 As shown, the movable shaft 521 is parallel to the adjustment shaft 56 at this time, and one side surface of the friction member 57 is vertically arranged and contacts one side surface of the vertical rake blade 42 at this time.

[0050] The rotating motor 2 is started by the PLC controller to drive the rotating handle 55 to rotate and adjust, thereby controlling the friction member 57 to make a circular motion adjustment along with the synchronous shaft 2 571 around the side where the friction member 57 contacts the turntable 2, and the output angle of the rotating motor 2 is synchronized with the monitoring angle of the angle sensor 481 to control the rotation position of the rake blade 42 and the friction member 57, thereby coordinating the angle adjustment of the rake blade 42 and the friction member 57 so that one side between them is in a state of contact.

[0051] The rotating motor 3 is started by the PLC controller to drive the rotating seat 52 to make a circular motion. As the rotating seat 52 makes a circular motion, the connecting seat 522 continuously changes the distance between it and the rotating seat 52 through the setting of the spring. The connecting seat 522 starts to move synchronously with the rotating seat 52 from the position in the initial state. When the friction member 57 and the rake blade 42 are in contact with each other, due to the limiting effect of the rake blade 42, during the movement of the connecting seat 522, the adjusting seat 54 will drive the friction member 57 to make a friction linear motion along the length direction of the rake blade 42. When the connecting seat 522 rotates to the other side with the rotating seat 52, the adjusting seat 54 at this time will drive the friction member 57 along the length direction of the adjusting shaft 56 to the fixed position on the rotating side. When the fixed axis 511 approaches and the adjustment seat 54 slides to a position where the side cannot move further, the connecting seat 522 has moved to the other side position corresponding to the initial position. Then, as the rotating seat 52 continues to rotate, the adjusting seat 54 slides synchronously with the connecting seat 522 along the adjustment axis 56 toward the fixed axis 511 on the other side until the friction member 57 moves to contact the side surface of the rake blade 42 at this time. Subsequently, the connecting seat 522 continues to rotate toward the initial position, and the friction member 57 at this time makes a frictional linear motion along the side surface of the rake blade 42. This reciprocating motion simulates the frictional motion generated by the side surface of the rake blade 42 during the process of the material sliding down to one side along the top surface of the turntable 2 during the process of being pushed by the rake blade 42.

[0052] Working principle:

[0053] The rake blade 42 is vertically mounted on the bottom of the U-shaped frame 441, and the bottom end of the rake blade 42 is in contact with the surface of the turntable 2, and one side of the vertical side wall of the friction member 57 is also in contact with one side of the rake blade 42;

[0054] The turntable 2 is controlled to rotate, so that rotational friction is generated between the turntable 2 and the bottom end of the rake blade 42, and the rotating seat 52 is also controlled to start circular motion, so that sliding friction is generated between the friction member 57 and the side of the rake blade 42;

[0055] After the test is finished, the rake blade 42 is removed and the thickness of the worn portion thereof is measured to obtain the wear condition of the rake blade 42 at different angles to the turntable 2.

[0056] During the test, the angles of the rake blade 42 and the friction member 57 are adjusted successively as needed.

[0057] When adjusting the angle of the rake blade 42, the linear motor is started to control the U-shaped frame 47 to move downward, drive the adjustment gear 471 to rotate and make the synchronous shaft 48 rotate synchronously, and then control the angle adjustment of the rake blade 42 through the cooperation of the synchronous wheel 45, the synchronous wheel 46 and the rotating shaft. In the process of adjusting the angle of the rake blade 42, its bottom end gradually leaves the surface of the truncated table. Therefore, through the action of the U-shaped frame 47 and the connecting shaft 472, the U-shaped seats 43 on both sides are synchronously driven to slide downward for adjustment, and the connecting frame 44 and the rake blade 42 are driven to lower their height at the same time, so that after the angle of the rake blade 42 is adjusted, the bottom end of the rake blade 42 can still contact the surface of the turntable 2;

[0058] When adjusting the angle of the friction member 57, the second rotating motor is started to drive the rotating handle 55 to rotate. Since one side of the friction member 57 is in contact with the surface of the turntable 2, the other end thereof rotates with the second synchronous shaft 571, and the rotation adjustment is carried out with the side as the axis direction. After the angle is adjusted to a suitable angle, the second rotating motor is stopped.

[0059] In this process, the angle of the rake blade 42 is adjusted first, and then the angle of the friction member 57 is adjusted. When the rake blade 42 is adjusted, the angle sensor 481 will record the adjusted angle and transmit the data to the PLC controller, and then the PLC controller will control the rotating motor 2 to rotate the corresponding angle, so that the friction member 57 is still in a state where it can have one side contact with the rake blade 42.

[0060] 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.

[0061] The above is a detailed introduction to a rake blade wear test system and a test method for a disc 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 its 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 disc dryer rake blade wear test system, characterized in that: include: A fixed table (1), wherein a side table (11) is provided on one side of the fixed table (1), a control terminal (111) with a PLC controller is installed on the side wall of the side table (11), a fixed frame (3) is installed on the fixed table (1), a mounting shaft (32) is provided on the fixed frame (3), and a turntable (2) is rotatably provided on the fixed table (1); A rake blade adjustment mechanism (4), the rake blade adjustment mechanism (4) comprising a second fixing frame (41), a rake blade (42) and a connecting frame (44), one end of the second fixing frame (41) being fixed to the mounting shaft (32), and the other end thereof being provided with a fixing groove, a lifting adjustment component being provided in the fixing groove, the connecting frame (44) being provided in the middle of the bottom of the lifting adjustment component and moving synchronously with the lifting adjustment component, the rake blade (42) being provided below the connecting frame (44) by rotating through a rotating shaft, and the rotating shaft being rotated and adjusted synchronously with the lifting movement of the lifting adjustment component; A friction simulation mechanism (5), the friction simulation mechanism (5) comprising a fixed frame three (51), an adjustment seat (54) and a friction member (57), two fixed frames three (51) are provided and both are mounted on the side platform (11), a fixed shaft (511) is provided on the fixed frame three (51), an adjustment shaft (56) is slidably provided between the fixed shafts (511) on both sides, a round table is provided on the side seat, a trajectory adjustment component is rotatably provided on the round table, the adjustment seat (54) is provided above the trajectory adjustment component and slides on the adjustment shaft (56), the rectangular motion trajectory of the adjustment seat (54) is controlled by the reciprocating motion of the trajectory adjustment component, a rotating handle (55) is rotatably provided on the adjustment seat (54), and the friction member (57) is synchronously connected to one end of the rotating handle (55) via a synchronous shaft two (571); The bottom end of the rake blade (42) can be in frictional contact with the turntable (2), and one side surface of the friction member (57) can be in frictional contact with one side surface of the rake blade (42); The trajectory adjustment component comprises a rotating seat (52), a second connecting shaft (53) and a rotating handle (55); the rotating seat (52) is rotatably arranged above the center position of the truncated table through an axis connection; a movable shaft (521) runs through the middle of the rotating seat (52); a limiting convex disc is arranged on one end of the movable shaft (521), and a connecting seat (522) is installed on the other end thereof; a spring is also sleeved on the movable shaft (521); one end of the spring contacts the side wall of the rotating seat (52), and the other end of the spring contacts the side wall of the connecting seat (522); A second connecting shaft (53) is rotatably arranged between the inner walls of the bottom end of the adjustment seat (54), the second connecting shaft (53) is arranged in a "T"-shaped structure, and the bottom end of the second connecting shaft (53) is fixed to the middle of the top surface of the connection seat (522), the adjustment seat (54) is provided with an arc-shaped through hole (541), and a rotating handle (55) is rotatably arranged on one side wall of the adjustment seat (54), and a second synchronous shaft (571) is installed in one end of the rotating handle (55), the second synchronous shaft (571) passes through the friction member (57) and is fixed thereto as a whole, and the second synchronous shaft (571) is slidably adjusted along the inner wall of the through hole (541); The longitudinal section of the friction member (57) is a right-angled trapezoid.

2. A disc dryer rake blade wear test system according to claim 1, characterized in that: The fixed platform (1) is provided with a plurality of limiting rings (12), the turntable (2) is rotatably arranged between the inner side walls of the limiting rings (12), and the turntable (2) is also rotatably passed through the two opposite side walls of the fixed frame (3), a driving gear (13) is also installed on the fixed platform (1), and a tooth groove is provided on the inner ring surface of the turntable (2) for mutually meshing transmission with the driving gear (13); The fixing frame 1 (3) is in a U-shaped structure, and a fixing support (31) is installed on its top surface, and one end of the mounting shaft (32) is fixed between the inner walls of the fixing support (31).

3. A disc dryer rake blade wear test system according to claim 2, characterized in that: The lifting and lowering adjustment assembly comprises a U-shaped seat (43), a second U-shaped frame (47), a synchronous shaft (48) and a connecting arm (49); the U-shaped seat (43) is provided with two side walls that are both slidably adjusted along the side walls of the fixed groove; the synchronous shaft (48) is rotatably arranged between the side walls of the U-shaped seats (43) on both sides; and a rotation angle sensor (481) and a synchronous wheel (45) that rotates synchronously therewith are installed on the synchronous shaft (48); the rotation angle sensor (481) is connected to the PLC controller via an electrical signal; A linear motor is installed on the outer wall of the second fixing frame (41) above the fixing groove, the second U-shaped frame (47) is installed on the end of the output shaft of the linear motor, and an adjusting gear (471) is rotatably arranged in the middle of the second U-shaped frame (47), the adjusting gear (471) is installed on the first synchronous shaft (48) and rotates synchronously with the first synchronous shaft (48), and a connecting shaft (472) is also arranged between the second U-shaped frame (47) and the U-shaped seat (43), and a rack (411) meshing with the adjusting gear (471) is also installed on one side of the second fixing frame (41); The connecting arm (49) is fixedly connected between the connecting frame (44) and the U-shaped seat (43), and triangular supports are arranged on both sides of the bottom wall of the connecting frame (44). The rotating shaft is rotatably arranged between the triangular supports on both sides and a synchronous wheel 2 (46) is installed on one end thereof. The synchronous wheel 1 (45) and the synchronous wheel 2 (46) are connected by a synchronous belt, and a U-shaped frame 1 (441) synchronized with the rotating shaft is arranged on the rotating shaft, and the rake blade (42) is fixed between the side walls of the U-shaped frame 1 (441).

4. A disc dryer rake blade wear test system according to claim 3, characterized in that: When the U-shaped frame 2 (47) moves vertically downward along with the linear motor, the U-shaped seat (43) drives the connecting frame (44) to descend synchronously. At the same time, the adjusting gear (471) rolls downward along the rack (411) and drives the synchronous shaft 1 (48) to rotate, so that the rake blade (42) is synchronously rotated and adjusted toward the side where the fixed frame 1 (3) is located during the descending adjustment process.

5. A disc dryer rake blade wear test system according to claim 4, characterized in that: When the second synchronous shaft (571) rotates to the bottom end position of the through hole (541), the inclined surface of the friction member (57) contacts the top surface of the turntable (2); When the rotating seat (52) performs a circular motion, the connecting seat (522) rotates synchronously therewith and changes the distance between it and the rotating seat (52), and the friction member (57) reciprocates in a rectangular trajectory to achieve an intermittent friction process with one side surface of the rake blade (42).

6. The test method of the disc dryer rake blade wear test system according to claim 5, characterized in that: The following steps are involved: S1, vertically mounting the rake blade (42) at the bottom of the U-shaped frame (441), wherein the bottom end of the rake blade (42) contacts the surface of the turntable (2), and one side vertical side wall of the friction member (57) also contacts one side surface of the rake blade (42); S2, controlling the turntable (2) to rotate, thereby generating rotational friction between the turntable (2) and the bottom end of the rake blade (42), and also controlling the rotating seat (52) to start circular motion, thereby generating sliding friction between the friction member (57) and the side of the rake blade (42). During the test, the angular position of the rake blade (42) and the friction member (57) is paused and adjusted successively as needed, and after being adjusted to an appropriate level, sliding friction can be generated between the friction member (57) and the rake blade (42), and rotational friction can be generated between the rake blade (42) and the turntable (2); S3. After the test is completed, the rake blade (42) is removed and the thickness of the worn portion thereof is measured to obtain the wear condition of the rake blade (42) at different angles to the turntable (2).

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