A method and device for pressing materials in sintering material distribution

Abstract

The present invention discloses a material pressing method and device for sintering cloth, and the method comprises the following steps: obtaining the thickness of the initial material layer at multiple points in the width direction of the material surface; calculating the average layer thickness H of the initial material layer; 平均 , average layer thickness on the left side H 左平均 And the average layer thickness H on the right 右平均 ; Average layer thickness H 平均 mm minus 8-10 mm is used as the target value of the primary pressure gauge; 左平均 and H 右平均 For comparison, the first pressing plate rotates in different states; the second pressing plate operates adaptively; the thickness of the material layer after one pressing is H 一次压料 Subtract 3-5mm as the control target value of the secondary pressing thickness gauge; the pressing plate of the present invention rotates in different directions while pressing the material, so that the compacted material surface not only has good flatness, but also makes the compacted material layer have a more uniform density, thereby improving the finished product rate of sintered ore and reducing the consumption of sintering energy.

Description

Technical Field

[0001] The present invention belongs to the field of metallurgical technology, and particularly relates to a method and device for pressing materials in sintering material distribution. Background Art

[0002] Sintering material distribution is a process before ignition of a sintering machine. The purpose is to distribute the sintering mixture onto the sintering machine trolley and form a certain reasonable segregation in the height direction. At the same time, it is required that the material surface along the width direction of the sintering trolley is relatively uniform and flat. This requires scraping and reasonably compacting the material surface of the mixture on the sintering trolley through a pressing device. Currently, in China, the commonly used pressing devices for sintering trolley material distribution are integral pressing rollers, integral or segmented fixed material leveling devices. These devices all have a common defect: they cannot effectively control and adjust the compaction degree of the sintering material layer along the width direction of the sintering trolley, resulting in uneven density of the material layer and unsatisfactory flatness of the material surface. This directly affects the subsequent sintering gas flow distribution, the development process of each sintering zone, the sintering consolidation strength, and the main suction power consumption of sintering. It not only affects the yield of sintered ore but also increases the consumption of sintering energy.

[0003] The Chinese patent specification discloses a split-adjustable arc-shaped material leveling plate for a sintering machine (publication number CN212645373U), and specifically discloses the following content: including a split-adjustable arc-shaped material leveling plate arranged below the batcher; the adjustable arc-shaped material leveling plate includes a straight material leveling plate and arc-shaped material leveling plates on both sides of the straight material leveling plate; the three are all connected to a wire winding device through their respective wire ropes, and the wire winding device is arranged at the bottom of the batcher and in front of the discharge port of the batcher; and the straight material leveling plate and the arc-shaped material leveling plates on both sides thereof are always in contact with the sintering machine material surface during the material leveling process; the two arc-shaped material leveling plates are located in front of the straight material leveling plate. Although this utility model can suppress the edge effect and reduce the return ore rate, it cannot solve the problem of uneven density of the material layer after pressing due to the material distribution factor.

[0004] The Chinese patent specification also discloses a sintering material pressing roller device adaptable to the change of material layer and its use method (publication number CN113074555A), and specifically discloses the following content: including a nine-roller batcher, a sintering mixture bin, and a round roller feeder. A pressing roller is arranged on the loaded sintering trolley, and roller teeth and roller bearings are respectively arranged on the pressing roller. This device and method can effectively improve the air permeability of the sintering machine material bed layer, and can effectively suppress the "edge effect" during the sintering process. At the same time, it can realize the synchronous adjustment of the pressing roller and the cloth height control requirements, so that the cloth compaction state always remains balanced and stable. This device and method can solve the problem of the flatness of the material surface edge and can adapt to the change of the material layer thickness during the compaction process, but still cannot solve the problem of uneven density of the material layer after pressing due to uneven material distribution. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] The present invention provides a method and device for pressing materials during sintering charging, aiming to: make the surface of the compacted materials have good flatness and make the compacted material layer have more uniform density.

[0007] 2. Technical solutions

[0008] To achieve the above object, the present invention adopts the following technical solutions.

[0009] As a method of the present invention, it specifically includes the following steps:

[0010] 1) Start the initial material layer thickness gauge, the first pressing thickness gauge, and the second pressing thickness gauge. The initial material layer thickness gauge obtains the material layer thickness values of all sampling points in the width direction of the material surface;

[0011] 2) Calculate the average layer thickness H of the initial material layer 平均 , and at the same time calculate the average layer thickness H of the left side of the initial material layer 左平均 , and the average layer thickness H of the right side 右平均 ;

[0012] 3) Subtract 8 - 10 mm from the average layer thickness H of the initial material layer 平均 mm as the control target value of the first pressing thickness gauge and participate in the lifting adjustment of the first electric cylinder in the first pressing mechanism;

[0013] 4) Make the first pressing plate and the second pressing plate perpendicular to the running direction of the sintering trolley and in the initial state, that is, the first induction head at the right end of the first crossbeam is in the induction position of the first middle proximity switch, and the second induction head at the right end of the second crossbeam is in the induction position of the second middle proximity switch;

[0014] 5) The sintering trolley runs;

[0015] 6) Compare H 左平均 and H 右平均 . When |H 左平均 - H 右平均 | ≤ 5 mm, the first pressing plate rotates clockwise until the first induction head is in the induction position of the first rear proximity switch and stays, then returns to the initial state, makes the first induction head stay in the induction position of the first middle proximity switch, then rotates counterclockwise until the first induction head is in the induction position of the first front proximity switch and stays, and finally returns to the initial state and stops; when H 右平均 - H 左平均 > 5 mm, the first pressing plate rotates counterclockwise until the first induction head is in the induction position of the first front proximity switch and stays, then returns to the initial state and stops; when H 左平均-H 右平均 When it is greater than 5 mm, the first pressure plate rotates clockwise until the first induction head is in the induction position of the first proximity switch behind and stays, then returns to the initial state and stops;

[0016] 7) Subtract 3 - 5 mm from the layer thickness H of the material layer after the first pressure measurement by the first pressure measurement thickness gauge as the control target value of the second pressure measurement thickness gauge, and participate in the lifting adjustment of the second electric cylinder in the second pressure mechanism; 一次压料 Subtract 3 - 5 mm as the control target value of the second pressure measurement thickness gauge and participate in the lifting adjustment of the second electric cylinder in the second pressure mechanism;

[0017] 8) While the first pressure plate is running as described above, the second pressure plate makes an adaptive operation;

[0018] 9) Take the layer thickness H of the material layer after the second pressure measurement obtained by the second pressure measurement thickness gauge 二次压料 as the final parameter of the pressure.

[0019] Furthermore, the time T that the first induction head stays at each induction position in step 6) 停留 = L / S, where L is the length (m) of the sintering trolley and S is the running speed (m / min) of the sintering trolley.

[0020] Furthermore, the adaptive operation of the second pressure plate in step 8) means that the second pressure plate only performs the pressure action and does not rotate.

[0021] Furthermore, the adaptive operation of the second pressure plate in step 8) means that the second pressure plate rotates synchronously with the first pressure plate while performing the pressure action.

[0022] Furthermore, the calculation of the average layer thickness H on the left side of the initial material layer in step 2) 左平均 is to extract the average value of multiple sampling points on the left side of the initial material layer thickness gauge, and the calculation of the average layer thickness H on the right side of the initial material layer 右平均 is to extract the average value of multiple sampling points on the right side of the initial material layer thickness gauge.

[0023] As a device of the present invention, it includes:

[0024] An installation platform located above the sintering trolley, the installation platform is connected to a first pressing mechanism and a second pressing mechanism. The first pressing mechanism includes a first electric cylinder, a first motor, a first locking device, and a first pressing plate. The first electric cylinder is connected to the installation platform through a first frame, and the telescopic rod of the first electric cylinder is connected to the first motor. The first pressing plate is connected to a first cross beam through a plurality of first reinforcing ribs. The upper part of the first cross beam is connected to a first central rod. One end of the first central rod passes through a first through hole on the installation platform and is connected to the output shaft of the first motor. The first locking device is connected to the installation platform and can hold or release the first central rod. The first pressing mechanism further includes a first limiter. The second pressing mechanism includes a second electric cylinder, a second motor, a second locking device, and a second pressing plate. The second electric cylinder is connected to the installation platform through a second frame, and the telescopic rod of the second electric cylinder is connected to the second motor. The second pressing plate is connected to a second cross beam through a plurality of second reinforcing ribs. The upper part of the second cross beam is connected to a second central rod. One end of the second central rod passes through a second through hole on the installation platform and is connected to the output shaft of the second motor. The second locking device is connected to the installation platform and can hold or release the second central rod. The second pressing mechanism further includes a second limiter.

[0025] Further, the first limiter includes a first middle proximity switch, a first front proximity switch, a first rear proximity switch, and a first induction head. The first middle proximity switch, the first front proximity switch, and the first rear proximity switch are respectively connected to the right front side of the installation platform through their respective connecting rods. The first induction head is connected to the right end of the first cross beam. The second limiter includes a second middle proximity switch, a second front proximity switch, a second rear proximity switch, and a second induction head. The second middle proximity switch, the second front proximity switch, and the second rear proximity switch are respectively connected to the right rear side of the installation platform through their respective connecting rods. The second induction head is connected to the right end of the second cross beam.

[0026] The device of the present invention further includes an initial material layer thickness gauge, a first pressing material thickness gauge, and a second pressing material thickness gauge. There are multiple initial material layer thickness gauges, which are evenly distributed along the transverse direction of the installation platform and are connected to the bottom surface of the installation platform. The first pressing material thickness gauge is located between the first pressing mechanism and the second pressing mechanism and is connected to the bottom surface of the installation platform. The second pressing material thickness gauge is located at the rear end of the second pressing mechanism and is connected to the bottom surface of the installation platform.

[0027] Further, the included angle formed by the connection line of the first middle proximity switch, the center point of the first pressing plate, and the first front proximity switch is θ 1 and the included angle formed by the connection line of the first middle proximity switch, the center point of the first pressing plate, and the first rear proximity switch is θ 2 and the included angle formed by the connection line of the second middle proximity switch, the center point of the second pressing plate, and the second front proximity switch is θ 3The included angle formed continuously by the second middle proximity switch, the center point of the second pressure plate, and the second rear proximity switch is θ 4 , the θ 1 , θ 2 , θ 3 , θ 4 are all 15 - 30°.

[0028] Furthermore, the bottom surfaces of the ends of the first pressure plate and the second pressure plate are both inclined planes.

[0029] Preferably, the initial material layer thickness gauge, the first pressure material thickness gauge, and the second pressure material thickness gauge are all ultrasonic thickness gauges; the first motor and the second motor are both variable frequency motors.

[0030] Furthermore, the first electric cylinder, the first motor, the first locking device, the second electric cylinder, the second motor, the second locking device, the initial material layer thickness gauge, the first pressure material thickness gauge, and the second pressure material thickness gauge are all electrically connected to the PLC controller.

[0031] Furthermore, the first middle proximity switch, the first front proximity switch, the first rear proximity switch, the second middle proximity switch, the second front proximity switch, and the second rear proximity switch are all electrically connected to the PLC controller.

[0032] III. Beneficial Effects

[0033] In the pressing method and device for sintering material spreading of the present invention, according to the state of the initial material layer, the pressure plate rotates in different directions while pressing the material, so that the compacted material surface not only has good flatness, but also the compacted material layer has a more uniform density, improving the finished product rate of sintered ore and reducing the consumption of sintering energy. Description of the Drawings

[0034] Figure 1 is the front view structural schematic diagram of the present invention.

[0035] Figure 2 is Figure 1 the rear view structural schematic diagram of.

[0036] Figure 3 is Figure 1 the A - A sectional view structural schematic diagram of.

[0037] Figure 4 is the state schematic diagram of the first and second pressure mechanisms in the first embodiment of the present invention.

[0038] Figure 5 is the state schematic diagram of the first and second pressure mechanisms in the first embodiment of the present invention.

[0039] Figure 6 is the state schematic diagram of the first and second pressure mechanisms in the second embodiment of the present invention.

[0040] Figure 7 It is a schematic diagram of the states of the first and second blanking mechanisms in the second embodiment of the present invention. Detailed implementation manners

[0041] The following further elaborates on the specific embodiments of the present invention in conjunction with the accompanying drawings to facilitate a clearer understanding by those skilled in the art.

[0042] Embodiment 1

[0043] As a method of the present invention, it specifically includes the following steps:

[0044] 1) As shown in Figure 3 , start the initial layer thickness gauge 5, the first blanking layer thickness gauge 6, and the second blanking layer thickness gauge 7. The initial layer thickness gauge obtains the layer thickness values of six sampling points in the width direction of the material surface;

[0045] 2) Calculate the average layer thickness H 平均 of the initial layer, and at the same time calculate the average layer thickness H 左平均 on the left side of the initial layer, and the average layer thickness H 右平均 on the right side; among them, the calculation of the average layer thickness H 左平均 on the left side of the initial layer is to extract the average value of the three sampling points on the left side of the initial layer thickness gauge, and the calculation of the average layer thickness H 右平均 on the right side of the initial layer is to extract the average value of the three sampling points on the right side of the initial layer thickness gauge;

[0046] 3) Subtract 8 - 10 mm from the average layer thickness H 平均 mm of the initial layer as the control target value of the first blanking layer thickness gauge, and participate in the lifting adjustment of the first electric cylinder 11 in the first blanking mechanism 1;

[0047] 4) As shown in Figure 3 , make the first blanking plate 14 and the second blanking plate 24 perpendicular to the traveling direction of the sintering trolley and in the initial state, that is, the first induction head 112 at the right end of the first cross beam 17 is in the induction position of the first middle proximity switch 19, and the second induction head 212 at the right end of the second cross beam 27 is in the induction position of the second middle proximity switch 29;

[0048] 5) The sintering trolley 4 travels, and the PLC controller drives the first electric cylinder 11 to adjust the lifting height of the first blanking plate according to the control target value of the first blanking layer thickness gauge;

[0049] 6) The PLC controller compares H 左平均 and H 右平均 , and starts the first motor 12. When |H 左平均 - H 右平均When |≤5mm, the first pressure plate 14 rotates clockwise until the first sensor head is in the sensing position of the first rear proximity switch 111 and stops (as shown in Figure 5 ), then returns to the initial state, makes the first sensor head stay in the sensing position of the first middle proximity switch 19 (as shown in Figure 3 ), then rotates counterclockwise until the first sensor head is in the sensing position of the first front proximity switch 110 and stops (as shown in Figure 4 ), and finally returns to the initial state and stops (as shown in Figure 3 ); when H 右平均 -H 左平均 >5mm, the first pressure plate rotates counterclockwise until the first sensor head is in the sensing position of the first front proximity switch and stops (as shown in Figure 4 ), then returns to the initial state and stops (as shown in Figure 3 ); when H 左平均 -H 右平均 >5mm, the first pressure plate rotates clockwise until the first sensor head is in the sensing position of the first rear proximity switch and stops (as shown in Figure 5 ), then returns to the initial state and stops (as shown in Figure 3 ); the time that the first sensor head stays at each sensing position can be determined by the calculation formula T 停留 =L / S, where L is the length of the sintering trolley (m), S is the running speed of the sintering trolley (m / min). In this embodiment, the length of the sintering trolley is 1.5m and the running speed of the sintering trolley is 3m / min. Therefore, the time that the first sensor head stays at each sensing position is 0.5 minutes; during the above-mentioned staying time, the first locking device 13 is in the locked state;

[0050] 7) Subtract 3-5mm from the layer thickness H of the material layer after the first pressure measurement obtained by the first pressure measurement thickness gauge 6 as the control target value of the second pressure measurement thickness gauge. The PLC controller drives the second electric cylinder (21) to adjust the lifting height of the second pressure plate 24 according to the control target value of the second pressure measurement thickness gauge; 一次压料

[0051] 8) As shown in Figure 4 , Figure 5 , during the operation of the first pressure plate, the second pressure plate only performs the pressure application action, does not rotate, and the second locking device 23 is in the locked state;

[0052] 9) Take the layer thickness H of the material layer after the second pressure measurement obtained by the second pressure measurement thickness gauge 7 as the final parameter of the pressure application. 二次压料

[0053] ​​The main feature of the blanking method of the present invention is that according to the state of the initial material layer, the blanking plate rotates in different directions while blanking. When H 右平均 -H 左平均 > 5 mm, the first blanking plate rotates counterclockwise until the first induction head is in the induction position of the first front proximity switch and stays. At this time, the first blanking plate tilts to the right. The thrust of the first blanking plate acting on the material layer not only has a longitudinal component forward but also a transverse component to the left. Thus, the "material peak" bulging on the material surface generates a superimposed migration longitudinally forward and transversely to the left, which can better fill the "material groove" sunken on the material surface. Similarly, when H 左平均 -H 右平均 > 5 mm, the first blanking plate rotates clockwise until the first induction head is in the induction position of the first rear proximity switch and stays. At this time, the first blanking plate tilts to the left. The thrust of the first blanking plate acting on the material layer not only has a longitudinal component forward but also a transverse component to the right. Thus, the "material peak" bulging on the material surface generates a superimposed migration longitudinally forward and transversely to the right, which can also better fill the "material groove" sunken on the material surface.

[0054] Embodiment 2

[0055] The difference between Embodiment 2 and Embodiment 1 is only that: while the second blanking plate performs the blanking action, it also rotates synchronously with the first blanking plate. That is, when H 右平均 -H 左平均 > 5 mm, the first blanking plate rotates counterclockwise until the first induction head is in the induction position of the first front proximity switch and stays, and the second blanking plate also rotates counterclockwise until the second induction head is in the induction position of the second front proximity switch and stays (as Figure 7 shown), and then the first and second blanking plates return to the initial state and stop synchronously (as Figure 3 shown); when H 左平均 -H 右平均 > 5 mm, the first blanking plate rotates clockwise until the first induction head is in the induction position of the first rear proximity switch and stays, and the second blanking plate also rotates clockwise until the second induction head is in the induction position of the second rear proximity switch and stays (as Figure 6 shown), and then the first and second blanking plates return to the initial state and stop synchronously (as Figure 3 shown). During the above stay time, both the first locking device and the second locking device are in the locked state.

[0056] The method of synchronously operating the first blanking plate and the second blanking plate is determined according to the material characteristics of the sintering material distribution. This method is suitable in the case where the particles of the material are too coarse.

[0057] As the device of the present invention, as Figure 1, Figure 2 As shown, it includes:

[0058] An installation platform 3 located above the sintering trolley 4, the installation platform is connected to a first material pressing mechanism 1 and a second material pressing mechanism 2. The first material pressing mechanism includes a first electric cylinder 11, a first motor 12, a first locking device 13, and a first material pressing plate 14. The first electric cylinder is connected to the installation platform through a first frame 15, and the telescopic rod of the first electric cylinder is connected to the first motor; the first material pressing plate is connected to a first cross beam 17 through a plurality of first reinforcing ribs 16, the upper part of the first cross beam is connected to a first central rod 18, and one end of the first central rod passes through a first through hole on the installation platform and then is connected to the output shaft of the first motor; the first locking device is connected to the installation platform and can hold or release the first central rod; the first material pressing mechanism further includes a first limiter; the second material pressing mechanism includes a second electric cylinder 21, a second motor 22, a second locking device 23, and a second material pressing plate 24. The second electric cylinder is connected to the installation platform through a second frame 25, and the telescopic rod of the second electric cylinder is connected to the second motor; the second material pressing plate is connected to a second cross beam 27 through a plurality of second reinforcing ribs 26, the upper part of the second cross beam is connected to a second central rod 28, and one end of the second central rod passes through a second through hole on the installation platform and then is connected to the output shaft of the second motor; the second locking device is connected to the installation platform and can hold or release the second central rod; the second material pressing mechanism further includes a second limiter.

[0059] Among them, the bottom surfaces of the ends of the first material pressing plate and the second material pressing plate are both inclined planes, which can ensure that a certain amount of material is carried to the left inner side and the right inner side of the sintering trolley during the process of the first material pressing plate and the second material pressing plate flattening and compacting the sintering cloth, so that the cloth height at both sides of the inner edge of the sintering trolley is greater than that in the middle, which can play a role in suppressing the edge effect during the sintering process.

[0060] Furthermore, as Figure 3 shown, the first limiter includes a first middle proximity switch 19, a first front proximity switch 110, a first rear proximity switch 111, and a first induction head 112. The first middle proximity switch, the first front proximity switch, and the first rear proximity switch are respectively connected to the right front side of the installation platform through their respective connecting rods, and the first induction head is connected to the right end of the first cross beam; the second limiter includes a second middle proximity switch 29, a second front proximity switch 210, a second rear proximity switch 211, and a second induction head 212. The second middle proximity switch, the second front proximity switch, and the second rear proximity switch are respectively connected to the right rear side of the installation platform through their respective connecting rods, and the second induction head is connected to the right end of the second cross beam.

[0061] Furthermore, as Figure 3As shown in the figure, the device of the present invention further includes an initial material layer thickness gauge 5, a primary pressing material thickness gauge 6, and a secondary pressing material thickness gauge 7. The initial material layer thickness gauges are multiple, evenly distributed along the transverse direction of the installation platform and connected to the bottom surface of the installation platform; the primary pressing material thickness gauge is located between the first pressing mechanism and the second pressing mechanism and connected to the bottom surface of the installation platform; the secondary pressing material thickness gauge is located at the rear end of the second pressing mechanism and connected to the bottom surface of the installation platform.

[0062] Further, as Figure 4 , Figure 5 , Figure 6 , Figure 7 shown, the included angle formed by the connection line of the first middle proximity switch, the center point of the first pressing plate, and the first front proximity switch is θ 1 , the included angle formed by the connection line of the first middle proximity switch, the center point of the first pressing plate, and the first rear proximity switch is θ 2 , the included angle formed by the connection line of the second middle proximity switch, the center point of the second pressing plate, and the second front proximity switch is θ 3 , the included angle formed by the connection line of the second middle proximity switch, the center point of the second pressing plate, and the second rear proximity switch is θ 4 , in this embodiment, the θ 1 , θ 2 , θ 3 , θ 4 are all 20°.

[0063] Preferably, the initial material layer thickness gauge, the primary pressing material thickness gauge, and the secondary pressing material thickness gauge are all ultrasonic thickness gauges; the first motor and the second motor are both frequency conversion motors.

[0064] Further, the first electric cylinder, the first motor, the first locking device, the second electric cylinder, the second motor, the second locking device, the initial material layer thickness gauge, the primary pressing material thickness gauge, and the secondary pressing material thickness gauge are all electrically connected to the PLC controller.

[0065] Further, the first middle proximity switch, the first front proximity switch, the first rear proximity switch, the second middle proximity switch, the second front proximity switch, and the second rear proximity switch are all electrically connected to the PLC controller.

[0066] For the pressing method and device of sintering material spreading of the present invention, according to the state of the initial material layer, the pressing plate rotates in different directions while pressing, so that the compacted material surface not only has good flatness, but also makes the compacted material layer have more uniform density, improves the yield of sintered ore, and reduces the consumption of sintering energy.

[0067] The present invention is not limited to the above specific embodiments, and various improvements made by those skilled in the art to its technical solutions according to the concept of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A pressing device for sintering material distribution, which comprises a mounting platform (3) located above a sintering trolley (4), and the mounting platform is connected to a first pressing mechanism (1) and a second pressing mechanism (2). Characterized in that: The first pressing mechanism comprises a first electric cylinder (11), a first motor (12), a first locking device (13), and a first pressing plate (14). The first electric cylinder is connected to the mounting platform through a first frame (15), and the telescopic rod of the first electric cylinder is connected to the first motor. The first pressing plate is connected to a first cross beam (17) through a plurality of first reinforcing ribs (16). The upper part of the first cross beam is connected to a first central rod (18). One end of the first central rod passes through a first through hole on the mounting platform and is connected to the output shaft of the first motor. The first locking device is connected to the mounting platform and can hold or release the first central rod. The first pressing mechanism further comprises a first limiter. The second pressing mechanism comprises a second electric cylinder (21), a second motor (22), a second locking device (23), and a second pressing plate (24). The second electric cylinder is connected to the mounting platform through a second frame (25), and the telescopic rod of the second electric cylinder is connected to the second motor. The second pressing plate is connected to a second cross beam (27) through a plurality of second reinforcing ribs (26). The upper part of the second cross beam is connected to a second central rod (28). One end of the second central rod passes through a second through hole on the mounting platform and is connected to the output shaft of the second motor. The second locking device is connected to the mounting platform and can hold or release the second central rod. The second pressing mechanism further comprises a second limiter. The first limiter comprises a first middle proximity switch (19), a first front proximity switch (110), a first rear proximity switch (111), and a first induction head (112). The first middle proximity switch, the first front proximity switch, and the first rear proximity switch are respectively connected to the right front side of the mounting platform through their respective connecting rods. The first induction head is connected to the right end of the first cross beam. The second limiter comprises a second middle proximity switch (29), a second front proximity switch (210), a second rear proximity switch (211), and a second induction head (212). The second middle proximity switch, the second front proximity switch, and the second rear proximity switch are respectively connected to the right rear side of the mounting platform through their respective connecting rods. The second induction head is connected to the right end of the second cross beam. It further comprises an initial material layer thickness gauge (5), a first pressing material thickness gauge (6), and a second pressing material thickness gauge (7). There are multiple initial material layer thickness gauges, which are evenly distributed along the transverse direction of the mounting platform and are connected to the bottom surface of the mounting platform. The first pressing material thickness gauge is located between the first pressing mechanism and the second pressing mechanism and is connected to the bottom surface of the mounting platform. The second pressing material thickness gauge is located at the rear end of the second pressing mechanism and is connected to the bottom surface of the mounting platform. The included angle formed by the connection lines of the first middle proximity switch, the center point of the first pressure plate, and the first front proximity switch is θ 1 , the included angle formed by the connection lines of the first middle proximity switch, the center point of the first pressure plate, and the first rear proximity switch is θ 2 , the included angle formed by the connection lines of the second middle proximity switch, the center point of the second pressure plate, and the second front proximity switch is θ 3 , the included angle formed by the connection lines of the second middle proximity switch, the center point of the second pressure plate, and the second rear proximity switch is θ 4 , the θ 1 , θ 2 , θ 3 , θ 4 are all 15 - 30 0 .

2. The pressing device according to claim 1, Characterized in that: The bottom surfaces of the ends of the first pressing plate and the second pressing plate are both inclined surfaces.

3. The pressing device according to claim 2, Characterized in that: The initial material layer thickness gauge, the first pressing material thickness gauge, and the second pressing material thickness gauge are all ultrasonic thickness gauges; the first motor and the second motor are both variable-frequency motors.

4. The pressing device according to claim 3, characterized in that: The first electric cylinder, the first motor, the first locking device, the second electric cylinder, the second motor, the second locking device, the initial material layer thickness gauge, the first pressing material thickness gauge, and the second pressing material thickness gauge are all electrically connected to the PLC controller.

5. The pressing device according to claim 4, characterized in that: The first middle proximity switch, the first front proximity switch, the first rear proximity switch, the second middle proximity switch, the second front proximity switch, and the second rear proximity switch are all electrically connected to the PLC controller.

6. A pressing method for sintering material distribution, the pressing method being based on the pressing device according to any one of claims 1 to 5 above, characterized in that, According to the state of the initial material layer, the pressing plate rotates in different directions while pressing, so that the density of the compacted material layer is more uniform and the material surface is more flat. Specifically, it includes the following steps: 1) Start the initial material layer thickness gauge (5), the first pressing material thickness gauge (6), and the second pressing material thickness gauge (7). The initial material layer thickness gauge obtains the material layer thickness values of all sampling points in the width direction of the material surface; 2) Calculate the average layer thickness H of the initial material layer 平均 , and at the same time calculate the average layer thickness H 左平均 on the left side of the initial material layer, and the average layer thickness H 右平均 on the right side; 3) Subtract 8 - 10 mm from the average layer thickness H of the initial material layer 平均 as the control target value of the first blank holding thickness gauge, and participate in the lifting adjustment of the first electric cylinder (11) in the first blank holding mechanism (1); 4) Make the first pressing plate (14) and the second pressing plate (24) perpendicular to the running direction of the sintering trolley and in the initial state, that is, the first induction head (112) at the right end of the first cross beam (17) is in the induction position of the first middle proximity switch (19), and the second induction head (212) at the right end of the second cross beam (27) is in the induction position of the second middle proximity switch (29); 5) The sintering trolley (4) runs; 6) Compare H 左平均 with H 右平均 . When , the first pressure plate (14) rotates clockwise until the first sensing head is in the sensing position of the first rear proximity switch (111) and stays, then returns to the initial state, makes the first sensing head stay in the sensing position of the first middle proximity switch (19), then rotates counterclockwise until the first sensing head is in the sensing position of the first front proximity switch (110) and stays, and finally returns to the initial state and stops; when , the first pressure plate rotates counterclockwise until the first sensing head is in the sensing position of the first front proximity switch and stays, then returns to the initial state and stops; when , the first pressure plate rotates clockwise until the first sensing head is in the sensing position of the first rear proximity switch and stays, then returns to the initial state and stops; 7) Subtract 3 - 5 mm from the layer thickness H of the material after the first pressing obtained by the first pressing thickness gauge (6), which is used as the control target value of the second pressing thickness gauge and participates in the lifting adjustment of the second electric cylinder (21) in the second pressing mechanism (2); 一次压料 ​ 8) While the first pressing plate is running, the second pressing plate (24) makes an adaptive operation; 9) Use the layer thickness H after the second blank holding measured by the second blank holding thickness gauge (7) 二次压料 as the final parameter for blank holding.

7. The pressing method according to claim 6, characterized in that: In step 6), the time that the first induction head stays at each induction position is T 停留 =L / S, where L is the length of the sintering trolley (m), and S is the speed of the sintering trolley (m / min).

8. The pressing method according to claim 6, characterized in that: The adaptive operation of the second pressing plate in step 8) means that the second pressing plate only performs the pressing action and does not rotate.

9. The pressing method according to claim 6, characterized in that: The adaptive operation of the second pressing plate in step 8) means that the second pressing plate rotates synchronously with the first pressing plate while performing the pressing action.

10. The pressing method according to claim 6, characterized in that: The average layer thickness H on the left side of the initial material layer in step 2) 左平均 is calculated by extracting the average value of multiple sampling points on the left side of the thickness gauge of the initial material layer. The average layer thickness H 右平均 on the right side is calculated by extracting the average value of multiple sampling points on the right side of the thickness gauge of the initial material layer.

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