A heavy-duty rotor hydraulic impact crusher

Abstract

The invention discloses a heavy-duty rotor hydraulic impact crusher, which relates to the technical field of impact crushers and comprises a main machine casing, one side of which is provided with a maintenance casing, a top of the main machine casing is provided with a feeding port, the main machine casing collects the weight of materials entering the inner cavity of the main machine casing, a control mechanism is provided at one end of the main machine casing, a rotor mechanism is installed in the inner cavity of the main machine casing through a bearing, the control mechanism controls the center of gravity position of the rotor mechanism according to the weight of the materials in the inner cavity of the main machine casing; the control mechanism controls the center of gravity position of the rotor mechanism according to the weight of the materials in the inner cavity of the main machine casing, so that during the high-speed rotation of the rotor mechanism, the deviated center of gravity can balance the impact force of the materials on the rotor mechanism, so that the rotation of the rotor mechanism is more stable, and the vibration of the rotor mechanism is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of impact crushers, and in particular to a heavy-duty rotor hydraulic impact crusher. Background Art

[0002] Impact crusher, also known as impact crusher, is mainly used for material processing in metallurgy, chemical industry, building materials, hydropower and other industries that often need to be relocated, especially for operations of mobile stones such as highways, railways, and hydropower projects. It can adopt a variety of configurations according to the type of raw materials, scale and requirements of finished materials. The impact crusher uses high-speed rotating plate hammers to cooperate with the impact plate to crush materials. For example, the Chinese patent with authorization announcement number CN105944809B discloses an impact crusher and the Chinese patent with authorization announcement number CN113457790B discloses a wear-resistant impact crusher plate hammer mechanism. When the plate hammer of this type of impact crusher cooperates with the impact plate to crush materials, because the materials always hit one side of the rotating shaft, the rotating shaft drives the plate hammer to rotate at a high speed, which will be subject to a large eccentric impact force, resulting in the process of the rotating shaft driving the plate hammer to rotate. It cannot remain stable and will produce large vibrations. Summary of the invention

[0003] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a heavy-duty rotor hydraulic impact crusher to solve the problem in the prior art that when the plate hammer of the impact crusher cooperates with the impact plate to crush materials, the materials always hit one side of the rotating shaft, and when the rotating shaft drives the plate hammer to rotate at high speed, it will be subjected to a large eccentric impact force, resulting in the plate hammer being unable to maintain stability during the rotation driven by the rotating shaft, and a large vibration will be generated.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] Specifically, a heavy-duty rotor hydraulic impact crusher is provided, including a main machine casing, a maintenance casing is arranged on one side of the main machine casing, a feed port is arranged on the top of the main machine casing, the main machine casing collects the weight of the material entering the inner cavity of the main machine casing, a control mechanism is arranged at one end of the main machine casing, a rotor mechanism is installed in the inner cavity of the main machine casing through a bearing, and the control mechanism controls the center of gravity position of the rotor mechanism according to the weight of the material in the inner cavity of the main machine casing.

[0006] As a further solution of the present invention: the control mechanism includes a control frame, the bottom surface of the control frame is fixed to one end of the main machine casing by bolts, four groups of adjusting hydraulic cylinders are movably connected to the control frame, the output end of the adjusting hydraulic cylinder is connected to an adjusting card through a hydraulic rod, the inner side of the adjusting card is connected to a guide wheel group, and a belt is nested on the side of the guide wheel group.

[0007] As a further solution of the present invention: the rotor mechanism includes a rotating shaft, which is installed in the inner cavity of the main machine casing through a bearing, one end of the rotating shaft is connected to a hydraulic gravity mechanism, and the other end of the rotating shaft is connected to an electric motor through a coupling, and a gravity cavity is opened inside the rotating shaft, and a first gravity block and a second gravity block are arranged in the gravity cavity.

[0008] As a further solution of the present invention: the hydraulic gravity mechanism includes a rotating column, one end of which is fixedly connected to a connecting plate, the side of the connecting plate away from the rotating column is fixedly connected to the end face of the rotating shaft, four hydraulic pistons are embedded in the side of the rotating column, and four hydraulic chambers are opened inside the rotating column near the four hydraulic pistons.

[0009] As a further solution of the present invention: the four hydraulic pistons are divided into two groups and are staggered on the sides of the rotating column, the first gravity block and the second gravity block are fixedly connected to the middle positions of the sides thereof, an oil chamber matching the adjusting block is opened inside the rotating shaft near the adjusting block, and the adjusting block divides the oil chamber into two sub-chambers which are not connected to each other, wherein the two hydraulic chambers corresponding to one group of hydraulic pistons are connected to the two sub-chambers corresponding to the adjusting block on the first gravity block, and the two hydraulic chambers corresponding to the other group of hydraulic pistons are connected to the two sub-chambers corresponding to the second gravity block.

[0010] As a further solution of the present invention: a control module is loaded on the control mechanism, and a weighing mechanism is provided on one side of the feed port;

[0011] The weighing mechanism includes a conveyor belt and a weighing sensor arranged inside the conveyor belt, and the weighing sensor collects the weight of the material entering the feed port;

[0012] The control module pre-generates a center of gravity position variation curve of the rotor mechanism based on the material weight;

[0013] The control module collects the weight of the material entering the feed port in real time through a weighing sensor, predicts the center of gravity position of the rotor mechanism according to the center of gravity position change curve, and uses a control mechanism to control the hydraulic gravity mechanism according to the center of gravity position.

[0014] As a further solution of the present invention: the control module collects a historical training data set in advance, and trains a machine learning model for predicting the center of gravity position of the rotor mechanism based on the historical training data set;

[0015] The rotating shaft and the plate hammer are provided with pressure sensors, and the control module collects the pressure data of the rotor mechanism through the pressure sensor and collects the speed data of the rotor mechanism through the motor;

[0016] Based on the pressure data and speed data of the rotor mechanism, the control module uses the machine learning module to predict the center of gravity position of the rotor mechanism, and the control module uses the control mechanism to control the hydraulic gravity mechanism according to the center of gravity position.

[0017] As a further solution of the present invention: the historical training data set includes N groups of training data, N is a positive integer, each group of training data includes feature data and label data, wherein the feature data includes pressure data and speed data;

[0018] The pressure data is the average impact force exerted on the pressure sensors on the rotating shaft and the plate hammer when collecting each set of training data;

[0019] The speed data is the rotation speed of the shaft driven by the motor when collecting each set of training data;

[0020] The label data is the center of gravity position of the hydraulic gravity mechanism when each set of training data is collected.

[0021] As a further solution of the present invention: the control module trains a machine learning model for predicting the center of gravity position of the rotor mechanism in the following manner:

[0022] Each set of feature data in the historical training data set is used as the input of the machine learning model, and the center of gravity position predicted by the machine learning model for each set of feature data is used as the output. The center of gravity position in the label data corresponding to each set of feature data is used as the prediction target, and minimizing the sum of all prediction accuracies is used as the training goal.

[0023] The calculation formula of the prediction accuracy is ai = (bi-ci) 2 , where ai is the prediction accuracy, bi is the predicted centroid position corresponding to the i-th group of feature data, and ci is the centroid position in the i-th group of label data. The machine learning model is trained until the sum of the prediction accuracies reaches convergence and the training is stopped.

[0024] As a further solution of the present invention: the average impact force is collected in the following manner:

[0025] The control module establishes an impact force variation curve according to the pressure sensor, and records the impact force peak values ​​of each curve in the impact force variation curve: F1, F2, ..., Fn, where n is a positive integer;

[0026] Average impact force = (F1+F2+…+Fn) / n;

[0027] Among them, F1, F2, ..., Fn are the impact force peak values ​​of each curve in the impact force variation curve.

[0028] Beneficial effects of the present invention:

[0029] 1. In the present invention, the main machine casing will collect the weight of the material entering the inner cavity of the main machine casing, and then the control mechanism will control the center of gravity position of the rotor mechanism according to the weight of the material in the inner cavity of the main machine casing. When the material collides with the rotor mechanism, the impact force of the material on the rotor mechanism will act on the side of the rotor mechanism close to the impact plate. During the high-speed rotation of the rotor mechanism, the deviated center of gravity can balance the impact force of the material on the rotor mechanism, making the rotation of the rotor mechanism more stable and greatly reducing the vibration of the rotor mechanism.

[0030] 2. In the present invention, the displacement of the hydraulic piston is determined by the distance from the belt to the side of the rotating column. The distance from the belt to the side of the rotating column is inversely proportional to the displacement of the hydraulic piston, that is, the closer the distance from the belt to the side of the rotating column, the greater the displacement of the hydraulic piston. The displacement of the hydraulic piston also means that more hydraulic oil will enter one of the sub-chambers, so the offset of the first gravity block or the second gravity block will also be greater. Therefore, the offset of the first gravity block or the second gravity block can be accurately controlled by controlling the distance from the belt to the side of the rotating column.

[0031] 3. In the present invention, the control module pre-generates a center of gravity position change curve of the rotor mechanism based on the material weight. When the control module collects the weight of the material entering the feed port in real time through the weighing sensor, the center of gravity position of the rotor mechanism can be obtained through the center of gravity position change curve. The control module uses the control mechanism to control the hydraulic gravity mechanism according to the center of gravity position, so that the center of gravity position of the rotor mechanism is adjusted according to the setting. In this way, it can be ensured that the center of gravity position of the rotor mechanism can be adaptively changed with the change of the weight of the material entering the feed port, and it can be ensured that the deviated center of gravity of the rotor mechanism can always balance the impact force of the material on the rotor mechanism, so that the rotation of the rotor mechanism is more stable, and the vibration of the rotor mechanism is greatly reduced.

[0032] 4. In the present invention, through the control module that is set up, after the control module collects the pressure data and speed data of the rotor mechanism in real time, it can use the machine learning model to predict the center of gravity position of the rotor mechanism, and then the control module uses the control mechanism according to the predicted center of gravity position, and controls the hydraulic gravity mechanism through the control mechanism to adjust the center of gravity position of the rotor mechanism to the predicted state. In this way, the impact force of the material on the rotor mechanism is balanced during high-speed rotation, so that the rotation of the rotor mechanism is stable, and the oscillation of the rotor mechanism is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 is a side view of the present invention;

[0036] Figure 3 It is a front view of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the rotor mechanism in the present invention;

[0038] Figure 5 It is a structural schematic diagram of the rotating shaft in the present invention;

[0039] Figure 6 is a side view of the rotating shaft of the present invention;

[0040] Figure 7 It is a schematic diagram of the structure of the first gravity block and the second gravity block in the present invention;

[0041] Figure 8 It is a schematic diagram of the structure of the coordination between the control mechanism and the hydraulic gravity mechanism in the present invention;

[0042] Fig. 9 It is a structural schematic diagram of the control mechanism in the present invention;

[0043] Fig.10 It is a structural schematic diagram of the hydraulic gravity mechanism in the present invention;

[0044] Fig.11 is a partial cross-sectional view of the hydraulic gravity mechanism of the present invention;

[0045] Fig.12 is a control flow chart of Example 2 of the present invention;

[0046] Fig.13 It is a structural schematic diagram of a gravity center position change curve in the present invention;

[0047] Fig.14 It is a control flow chart of Example 3 in the present invention.

[0048] In the figure: 1. main machine casing; 11. feed port; 2. maintenance casing; 21. first hydraulic cylinder; 22. second hydraulic cylinder; 3. control mechanism; 31. control frame; 32. adjustment hydraulic cylinder; 33. adjustment card; 34. guide wheel group; 35. belt; 4. rotor mechanism; 41. rotating shaft; 42. plate hammer; 43. hydraulic gravity mechanism; 431. rotating column; 432. connecting plate; 433. hydraulic piston; 434. hydraulic chamber; 435. limit rod; 44. gravity chamber; 45. first gravity block; 46. second gravity block; 47. adjustment block; 5. weighing mechanism. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1:

[0051] like Figure 1-Figure 3 As shown, the present invention discloses a heavy-duty rotor hydraulic impact crusher, comprising a main machine casing 1, a maintenance casing 2 is provided on one side of the main machine casing, a first hydraulic cylinder 21 and a second hydraulic cylinder 22 are provided on the outer side of the maintenance casing 2, an output end of the first hydraulic cylinder 21 passes through the maintenance casing 2 and is connected to an impact plate, and an output end of the second hydraulic cylinder 22 passes through the maintenance casing 2 and is also connected to an impact plate, the first hydraulic cylinder 21 and the second hydraulic cylinder 22 can control the interval between the impact plate and the rotor mechanism 4, and the particle size of the material crushed is adjusted by the interval, a feed port 11 is provided on the top of the main machine casing 1, the main machine casing 1 collects the weight of the material entering the inner cavity of the main machine casing 1, a control mechanism 3 is provided at one end of the main machine casing 1, a rotor mechanism 4 is installed in the inner cavity of the main machine casing 1 through a bearing, and the control mechanism 3 controls the center of gravity position of the rotor mechanism 4 according to the weight of the material in the inner cavity of the main machine casing 1;

[0052] It should be noted that when using the heavy-duty rotor hydraulic impact crusher, the material to be crushed can be transported to the inner cavity of the main machine casing 1 through the feed port 11. The material entering the inner cavity of the main machine casing 1 can be crushed under the processing of the rotor mechanism 4 inside the main machine casing 1. When the material enters the inner cavity of the main machine casing 1 through the feed port 11, the main machine casing 1 will collect the weight of the material entering the inner cavity of the main machine casing 1, and then the control mechanism 3 controls the center of gravity position of the rotor mechanism 4 according to the weight of the material in the inner cavity of the main machine casing 1. In this way, during the material crushing process of the rotor mechanism 4, the rotor mechanism 4 with the offset center of gravity will maintain balance during the rotation process. The specific reason is that when the material collides with the rotor mechanism 4, the impact force of the material on the rotor mechanism 4 will act on the side of the rotor mechanism 4 close to the impact plate. Therefore, the rotor mechanism 4 needs to be adjusted to the side away from the impact plate. In this way, during the high-speed rotation of the rotor mechanism 4, the deviated center of gravity can balance the impact force of the material on the rotor mechanism 4, making the rotation of the rotor mechanism 4 more stable, and greatly reducing the vibration of the rotor mechanism 4.

[0053] It should also be noted that when the main housing 1 collects the material weight, the material is at the feed port 11 and is not in contact with the rotor mechanism 4. Therefore, the control mechanism 3 needs to delay for a period of time to adjust the center of gravity position of the rotor mechanism 4. The length of the delay time is preset by technical personnel in this field based on the distance between the rotor mechanism 4 and the feed port 11.

[0054] like Figure 3 , Figure 8 and Fig. 9 As shown, the control mechanism 3 includes a control frame 31, the bottom surface of the control frame 31 is fixed to one end of the main machine casing 1 by bolts, and the control frame 31 can also be fixed to one end of the main machine casing 1 by welding, and four groups of adjusting hydraulic cylinders 32 are movably connected to the control frame 31, and the output end of the adjusting hydraulic cylinder 32 is connected to an adjusting card 33 through a hydraulic rod, and the inner side of the adjusting card 33 is connected to a guide wheel group 34, and the side of the guide wheel group 34 is embedded with a belt 35;

[0055] It should be noted that a rotation groove matching the adjusting hydraulic cylinder 32 is provided on the surface of the control frame 31 near the adjusting hydraulic cylinder 32. Figure 6 As shown, the side of the adjusting hydraulic cylinder 32 is fixedly connected with a rotating shaft 41, and a rotating groove matching the rotating shaft 41 is opened at a position near the rotating shaft 41 on the side wall of the rotating groove, and a bearing matching the rotating shaft 41 can also be installed at a position near the rotating shaft 41 on the side wall of the rotating groove, so as to realize the installation of the adjusting hydraulic cylinder 32;

[0056] The guide wheel group 34 includes several rotating rods, one side of which is connected to a bearing seat, and the bearing seats are connected by a hinge, so that the guide wheel group 34 can bend freely, and the adjustment card 33 is fixedly connected to a bearing seat in the guide wheel group 34, so that when the adjustment hydraulic cylinder 32 controls the adjustment card 33 through the hydraulic rod, the adjustment card 33 can also control the position of the rotating rod and the belt 35 through the bearing seat.

[0057] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the rotor mechanism 4 includes a rotating shaft 41, and a plurality of groups of plate hammers 42 are installed on the side of the rotating shaft 41 at equal distances. When the rotating shaft 41 rotates at a high speed, the plate hammers 42 on the side will be driven to rotate synchronously. When the plate hammers 42 rotating at a high speed come into contact with the material, the material will be impacted onto the impact plate. When the material collides with the impact plate, it will rebound to the plate hammer 42, and this process is repeated until the material is crushed into particles. The rotating shaft 41 is installed in the inner cavity of the main machine housing 1 through a bearing, one end of the rotating shaft 41 is connected to a hydraulic gravity mechanism 43, and the other end of the rotating shaft 41 is connected to a motor through a coupling. A gravity cavity 44 is opened inside the rotating shaft 41, and a first gravity block 45 and a second gravity block 46 are arranged in the gravity cavity 44.

[0058] It should be noted that when the motor is turned on, the output shaft of the motor can drive the rotating shaft 41 to rotate through the coupling, and the rotating shaft 41 can drive the plate hammer 42 to rotate at a high speed, and the material entering the main machine housing 1 can be crushed in cooperation with the impact plate;

[0059] like Figure 6 and Figure 7 As shown, the first gravity block 45 and the second gravity block 46 can slide a certain distance in the gravity cavity 44. When the first gravity block 45 and the second gravity block 46 are both in the middle position of the gravity cavity 44, the center of gravity of the rotating shaft 41 is the center of rotation of the rotating shaft 41. It should also be noted that the first gravity block 45 and the second gravity block 46 need to cooperate with the rotating shaft 41 of the four groups of plate hammers 42. If six groups of plate hammers 42 are set on the side of the rotating shaft 41, it is necessary to add a group of gravity blocks. The first gravity block 45 and the second gravity block 46 are perpendicular to each other. When the number of gravity blocks is three groups, the angle between the three groups of gravity blocks needs to be adjusted to sixty degrees.

[0060] like Figure 6-Figure 11 As shown, the hydraulic gravity mechanism 43 includes a rotating column 431, one end of which is fixedly connected to a connecting plate 432, and the side of the connecting plate 432 away from the rotating column 431 is fixedly connected to the end face of the rotating shaft 41, and four hydraulic pistons 433 are embedded in the side face of the rotating column 431, and four hydraulic chambers 434 are provided in the rotating column 431 near the positions of the four hydraulic pistons 433, and a limiting rod 435 is provided in the hydraulic chamber 434, and a limiting groove matching the limiting rod 435 is provided in the end face of the hydraulic piston 433 near the limiting rod 435, and when the hydraulic piston 433 slides in the hydraulic chamber 434, the cooperation of the limiting rod 435 and the limiting groove can improve the stability of the hydraulic piston 433 during the sliding process;

[0061] It should be noted that since the side of the connecting plate 432 away from the rotating column 431 is fixedly connected to the end face of the rotating shaft 41, when the rotating shaft 41 rotates, the rotating column 431 will also rotate synchronously with the rotation of the rotating shaft 41, and the direction of the four hydraulic pistons 433 is consistent with the direction of the first gravity block 45 and the second gravity block 46.

[0062] The four hydraulic pistons 433 are divided into two groups and are staggered on the side of the rotating column 431. Figure 7As shown, the middle positions of the sides of the first gravity block 45 and the second gravity block 46 are fixedly connected with an adjusting block 47, and an oil chamber matching the adjusting block 47 is opened near the adjusting block 47 inside the rotating shaft 41, and the adjusting block 47 divides the oil chamber into two sub-chambers that are not connected to each other, wherein two hydraulic chambers 434 corresponding to one group of hydraulic pistons 433 are connected to the two sub-chambers corresponding to the adjusting block 47 on the first gravity block 45, and two hydraulic chambers 434 corresponding to the other group of hydraulic pistons 433 are connected to the two sub-chambers corresponding to the second gravity block 46;

[0063] It should be noted that, during the rotation of the rotating column 431, the four hydraulic pistons 433 on the side of the rotating column 431 will be driven to rotate synchronously. When the hydraulic piston 433 encounters the belt 35, the belt 35 will limit the position of the belt 35 due to the position of the guide wheel group 34 inside it, so it will squeeze the hydraulic piston 433. The outer end of the hydraulic piston 433 is set to a hemispherical shape, which makes it easier for the belt 35 to squeeze the hydraulic piston 433. When the hydraulic piston 433 is squeezed by the belt 35, the hydraulic piston 433 will move toward the inside of the hydraulic cavity 434. During the movement of the hydraulic piston 433, the hydraulic piston 433 The hydraulic oil in the hydraulic chamber 434 will be squeezed. Since the two hydraulic chambers 434 corresponding to one group of hydraulic pistons 433 are connected to the two sub-chambers corresponding to the adjustment block 47 on the first gravity block 45, and the two hydraulic chambers 434 corresponding to the other group of hydraulic pistons 433 are connected to the two sub-chambers corresponding to the second gravity block 46, the hydraulic oil in the hydraulic chamber 434 will enter one of the sub-chambers. The hydraulic oil entering the sub-chamber will act on the first gravity block 45 or the second gravity block 46 through the adjustment block 47, so that the first gravity block 45 or the second gravity block 46 will be offset, thereby realizing the offset of the center of gravity position of the rotor mechanism 4.

[0064] The displacement of the hydraulic piston 433 is determined by the distance from the belt 35 to the side of the rotating column 431. The distance between the belt 35 and the side of the rotating column 431 is inversely proportional to the displacement of the hydraulic piston 433, that is, the closer the distance between the belt 35 and the side of the rotating column 431, the greater the displacement of the hydraulic piston 433. The displacement of the hydraulic piston 433 also means that more hydraulic oil will enter one of the sub-chambers, so the offset of the first gravity block 45 or the second gravity block 46 will be greater. Therefore, the offset of the first gravity block 45 or the second gravity block 46 can be accurately controlled by controlling the distance from the belt 35 to the side of the rotating column 431.

[0065] Embodiment 2:

[0066] like Figure 1 , Figure 2 , Figure 4 and Fig.12As shown, the control mechanism 3 is loaded with a control module, and a weighing mechanism 5 is provided on one side of the feed port 11; the weighing mechanism 5 includes a conveyor belt and a weighing sensor arranged inside the conveyor belt, and the weighing sensor collects the weight of the material entering the feed port 11;

[0067] It should be noted that external materials can enter the feed port 11 through the weighing mechanism 5. When the materials are transported to the top surface of the weighing mechanism 5, that is, the top surface of the conveyor belt, the weighing sensor is arranged on the inner side of the conveyor belt. In this way, the weighing sensor arranged on the inner side of the conveyor belt can collect the weight of the materials on the top surface of the conveyor belt, and convert the weight of the materials into an electrical signal and transmit it to the control module. The control module records the weight of the materials and operates the control mechanism 3 according to the preset delay time.

[0068] The control module pre-generates a gravity center position change curve of the rotor mechanism 4 based on the material weight. The gravity center position change curve is as follows: Fig.13 As shown, the x-axis represents the material weight in kg, the y-axis represents the center of gravity of the rotor mechanism 4 in cm, the origin of the x-axis represents the state when the material weight is zero, that is, no material is added to the main machine housing 1, and the corresponding y-axis is also the origin at this time. The origin on the y-axis represents the center of gravity of the rotating shaft 41, and point a represents that when the material weight is a, the center of gravity of the rotor mechanism 4 reaches the maximum value b, and b represents that the distance between the center of gravity of the rotor mechanism 4 and the center of gravity of the rotating shaft 41 is b. Subsequently, as the material weight continues to increase, the center of gravity of the rotor mechanism 4 cannot continue to increase. Therefore, in order to ensure the stability of the rotor mechanism 4 during the material crushing process of the main machine housing 1, it is necessary to set the maximum threshold a of the material crushed by the main machine housing 1, and control the mass of the material entering the feed port 11 not to exceed the maximum threshold a;

[0069] The control module collects the weight of the material entering the feed port 11 in real time through the weighing sensor, predicts the center of gravity position of the rotor mechanism 4 according to the center of gravity position change curve, and controls the hydraulic gravity mechanism 43 using the control mechanism 3 according to the center of gravity position;

[0070] It should be noted that if Figure 4 and Fig.13 As shown, when the control module collects the weight of the material entering the feed port 11 in real time through the weighing sensor as c, the center of gravity position d of the rotor mechanism 4 can be obtained through the center of gravity position change curve. Therefore, the control module uses the control mechanism 3 to control the hydraulic gravity mechanism 43 according to the center of gravity position, so that the center of gravity position of the rotor mechanism 4 is adjusted to d. In this way, it can be ensured that the center of gravity position of the rotor mechanism 4 can be adaptively changed with the change of the weight of the material entering the feed port 11, and it can be ensured that the deviated center of gravity of the rotor mechanism 4 can always balance the impact force of the material on the rotor mechanism 4, so that the rotation of the rotor mechanism 4 is more stable, and the vibration of the rotor mechanism 4 is greatly reduced.

[0071] Embodiment 3:

[0072] like Figure 1 , Figure 8 and Fig.14 As shown, the control module collects a historical training data set in advance, and trains a machine learning model for predicting the center of gravity position of the rotor mechanism 4 based on the historical training data set;

[0073] The historical training data set includes N groups of training data, where N is a positive integer, and each group of training data includes feature data and label data, wherein the feature data includes pressure data and speed data;

[0074] The pressure data is the average impact force exerted on the pressure sensors on the rotating shaft 41 and the plate hammer 42 when collecting each set of training data. It should be noted that the average impact force is collected in the following manner:

[0075] like Figure 5 As shown, pressure sensors are arranged on the striking surfaces of four groups of plate hammers 42 and the side of the rotating shaft 41. The pressure sensor on the striking surface of the plate hammer 42 and the pressure sensor arranged on the side of the rotating shaft 41 connected to the striking surface form a group of pressure sensors. Therefore, a total of four groups of pressure sensors are arranged on the side of the rotating shaft 41 and the plate hammer 42. The control module establishes impact force variation curves according to the four groups of pressure sensors, and then records the impact force peak values ​​of each curve in each impact force variation curve: F1, F2, ..., Fn, where n is a positive integer;

[0076] Average impact force = (F1+F2+…+Fn) / n;

[0077] Among them, F1, F2, ..., Fn are the impact force peak values ​​of each curve in the impact force variation curve, such as Fig.10 As shown, each group of pressure sensors corresponds to a hydraulic piston 433, so it can ensure that the pressure data fed back by the four groups of pressure sensors from the four groups of hydraulic pistons 433 are processed separately;

[0078] The speed data is the rotation speed of the motor driving the rotating shaft 41 when collecting each set of training data. It should be noted that the control module can directly obtain the rotation speed of the motor, and then assign the rotation speed to the rotating shaft 41. If the transmission ratio between the motor and the rotating shaft 41 is not 1:1, the rotation speed is converted accordingly according to the transmission ratio between the motor and the rotating shaft 41, and the converted rotation speed is assigned to the rotating shaft 41;

[0079] The label data is the center of gravity position of the hydraulic gravity mechanism 43 when each set of training data is collected.

[0080] The control module trains a machine learning model for predicting the center of gravity position of the rotor mechanism 4 in the following manner:

[0081] Each set of feature data in the historical training data set is used as the input of the machine learning model, and the center of gravity position predicted by the machine learning model for each set of feature data is used as the output. The center of gravity position in the label data corresponding to each set of feature data is used as the prediction target, and minimizing the sum of all prediction accuracies is used as the training goal.

[0082] The calculation formula for prediction accuracy is ai = (bi-ci) 2 , where ai is the prediction accuracy, bi is the predicted center of gravity position corresponding to the i-th group of feature data, and ci is the center of gravity position in the i-th group of label data. The machine learning model is trained until the sum of the prediction accuracies reaches convergence, and the training is stopped. The convergence standard is set by those skilled in the art according to the specific model training situation;

[0083] Pressure sensors are provided on the rotating shaft 41 and the plate hammer 42. The control module collects pressure data of the rotor mechanism 4 through the pressure sensor and collects speed data of the rotor mechanism 4 through the motor. Based on the pressure data and speed data of the rotor mechanism 4, the control module uses a machine learning module to predict the center of gravity position of the rotor mechanism 4. The control module uses the control mechanism 3 to control the hydraulic gravity mechanism 43 according to the center of gravity position.

[0084] It should be noted that, through the control module that is set up, after the control module collects the pressure data and speed data of the rotor mechanism 4 in real time, it can use the machine learning model to predict the center of gravity position of the rotor mechanism 4, and then the control module uses the control mechanism 3 according to the predicted center of gravity position, and controls the hydraulic gravity mechanism 43 through the control mechanism 3 to adjust the center of gravity position of the rotor mechanism 4 to the predicted state. In this way, the rotor mechanism 4 can balance the impact force of the material during high-speed rotation, so that the rotation of the rotor mechanism 4 is stable, and the oscillation of the rotor mechanism 4 is greatly reduced.

[0085] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A heavy-duty rotor hydraulic impact crusher, characterized in that: include: A main machine casing (1) is provided with a maintenance casing (2) on one side thereof, and a feed port (11) is provided on the top of the main machine casing (1), and the main machine casing (1) collects the weight of the material entering the inner cavity of the main machine casing (1); A control mechanism (3) disposed at one end of the main machine housing (1); A rotor mechanism (4) is mounted in the inner cavity of the main machine casing (1) via a bearing, and a control mechanism (3) controls the center of gravity position of the rotor mechanism (4) according to the weight of the material in the inner cavity of the main machine casing (1); The control mechanism (3) comprises a control frame (31), the bottom surface of the control frame (31) being fixed to one end of the main machine casing (1) by means of bolts, four groups of adjusting hydraulic cylinders (32) being movably connected to the control frame (31), the output ends of the adjusting hydraulic cylinders (32) being connected to adjusting cards (33) via hydraulic rods, the inner side of the adjusting card (33) being connected to a guide wheel group (34), and the side surface of the guide wheel group (34) being embedded with a belt (35); The rotor mechanism (4) comprises a rotating shaft (41), the rotating shaft (41) being mounted in the inner cavity of the main machine housing (1) via a bearing, one end of the rotating shaft (41) being connected to a hydraulic gravity mechanism (43), the other end of the rotating shaft (41) being connected to a motor via a coupling, a gravity cavity (44) being provided inside the rotating shaft (41), and a first gravity block (45) and a second gravity block (46) being provided inside the gravity cavity (44).

2. A heavy-duty rotor hydraulic impact crusher according to claim 1, characterized in that: The hydraulic gravity mechanism (43) comprises a rotating column (431), one end of the rotating column (431) is fixedly connected to a connecting plate (432), a side of the connecting plate (432) away from the rotating column (431) is fixedly connected to the end surface of the rotating shaft (41), four hydraulic pistons (433) are embedded in the side surface of the rotating column (431), and four hydraulic chambers (434) are provided inside the rotating column (431) near the four hydraulic pistons (433).

3. A heavy-duty rotor hydraulic impact crusher according to claim 2, characterized in that: The four hydraulic pistons (433) are divided into two groups and are staggeredly arranged on the side of the rotating column (431). The middle positions of the sides of the first gravity block (45) and the second gravity block (46) are fixedly connected with adjustment blocks (47). An oil chamber matching the adjustment block (47) is provided in the interior of the rotating shaft (41) near the adjustment block (47). The adjustment block (47) divides the oil chamber into two sub-chambers that are not connected to each other. The two hydraulic chambers (434) corresponding to one group of hydraulic pistons (433) are connected to the two sub-chambers corresponding to the adjustment block (47) on the first gravity block (45), and the two hydraulic chambers (434) corresponding to the other group of hydraulic pistons (433) are connected to the two sub-chambers corresponding to the second gravity block (46).

4. A heavy-duty rotor hydraulic impact crusher according to claim 3, characterized in that: The control mechanism (3) is loaded with a control module, and a weighing mechanism (5) is provided on one side of the feed port (11); The weighing mechanism (5) comprises a conveyor belt and a weighing sensor arranged inside the conveyor belt, the weighing sensor collecting the weight of the material entering the feed port (11); The control module pregenerates a gravity center position change curve of the rotor mechanism (4) based on the material weight; The control module collects the weight of the material entering the feed port (11) in real time through a weighing sensor, predicts the center of gravity position of the rotor mechanism (4) according to the center of gravity position change curve, and controls the hydraulic gravity mechanism (43) using the control mechanism (3) according to the center of gravity position.

5. A heavy-duty rotor hydraulic impact crusher according to claim 4, characterized in that: The control module collects a historical training data set in advance, and trains a machine learning model for predicting the center of gravity position of the rotor mechanism (4) based on the historical training data set; The rotating shaft (41) and the plate hammer (42) are provided with pressure sensors, and the control module collects pressure data of the rotor mechanism (4) through the pressure sensors and collects speed data of the rotor mechanism (4) through the electric motor; Based on the pressure data and the rotation speed data of the rotor mechanism (4), the control module uses the machine learning module to predict the center of gravity position of the rotor mechanism (4), and the control module uses the control mechanism (3) to control the hydraulic gravity mechanism (43) according to the center of gravity position.

6. A heavy-duty rotor hydraulic impact crusher according to claim 5, characterized in that: The historical training data set includes N groups of training data, where N is a positive integer, and each group of training data includes feature data and label data, wherein the feature data includes pressure data and speed data; The pressure data is the average impact force exerted on the pressure sensors on the rotating shaft (41) and the plate hammer (42) when collecting each set of training data; The rotation speed data is the rotation speed of the rotating shaft (41) driven by the motor when collecting each set of training data; The label data is the center of gravity position of the hydraulic gravity mechanism (43) when each set of training data is collected.

7. A heavy-duty rotor hydraulic impact crusher according to claim 6, characterized in that: The control module trains a machine learning model for predicting the center of gravity position of the rotor mechanism (4) in the following manner: Each set of feature data in the historical training data set is used as the input of the machine learning model, and the center of gravity position predicted by the machine learning model for each set of feature data is used as the output. The center of gravity position in the label data corresponding to each set of feature data is used as the prediction target, and minimizing the sum of all prediction accuracies is used as the training goal. The calculation formula for the prediction accuracy is ai=(bi-ci) 2 , where ai is the prediction accuracy, bi is the predicted centroid position corresponding to the i-th group of feature data, and ci is the centroid position in the i-th group of label data. The machine learning model is trained until the sum of the prediction accuracies reaches convergence and the training is stopped.

8. A heavy-duty rotor hydraulic impact crusher according to claim 7, characterized in that: The average impact force is collected in the following manner: The control module establishes an impact force variation curve according to the pressure sensor, and records the impact force peak values ​​of each curve in the impact force variation curve: F1, F2, ..., Fn, where n is a positive integer; Average impact force = (F1+F2+…+Fn) / n; Among them, F1, F2, ..., Fn are the impact force peak values ​​of each curve in the impact force variation curve.

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