Crusher, feed regulating system of crusher and feed regulating method thereof

Abstract

The present application relates to the technical field of crushers, in particular to a crusher, a feeding regulation system of the crusher and a feeding regulation method thereof. The feeding regulation system of the crusher changes the included angle between the feeding bottom plate and the horizontal plane by rotating the feeding bottom plate around the fixed seat under the impact of raw materials, and sets a hydraulic cylinder below the feeding bottom plate. When the feeding bottom plate is pressed down under the impact of raw materials, the feeding bottom plate presses the hydraulic cylinder, the hydraulic cylinder is switched to the compressed state, the hydraulic oil pressure in the hydraulic cylinder is increased, the hydraulic oil enters the accumulator connected with the hydraulic cylinder to store energy, and then when the raw materials leave the feeding bottom plate, the pressure of the feeding bottom plate on the hydraulic cylinder is reduced, the accumulator releases energy, and under the action of the accumulator, the hydraulic cylinder is reset to the extended state, the feeding bottom plate is reset, and the automatic regulation of the included angle between the feeding bottom plate and the horizontal plane is realized, without artificial regulation and control, and with high automation.

Description

Technical Field

[0001] This invention relates to the field of crusher technology, specifically to a crusher, a crusher feed adjustment system, and a feed adjustment method. Background Technology

[0002] A crusher is used to break large solid materials (stones, bricks, concrete, etc.) into smaller pieces. Raw materials are fed into the crusher by a feeder and enter the crushing chamber through the feed inlet. In actual operation, the size and composition of the raw materials vary considerably. Materials smaller than the crusher's maximum allowable feed size can enter the crushing chamber through the main feed inlet. To ensure smooth entry of the raw materials into the crushing chamber, the crusher's feed plate has a certain angle (generally designed between 45° and 60°).

[0003] However, the feed bottom plate angle of existing crushers is usually fixed, meaning it remains constant throughout operation. This presents several problems: 1) A larger feed bottom plate angle results in faster material sliding or rolling down the plate, increasing the impact on the rotor and hammers. Larger materials can easily damage the hammers or rotor. 2) A smaller feed bottom plate angle results in slower material sliding or rolling down the plate. Smaller materials or those with high water or mud content are more prone to accumulating at the feed bottom plate, leading to material buildup or even blockages, reducing overall crushing efficiency. In short, the feed bottom plate angle cannot be adjusted to adapt to the size of the raw material, causing inconvenience in crusher operation. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the inclination angle of the feed bottom plate cannot be adjusted in the prior art, thereby providing a crusher that can adjust the inclination angle of the feed bottom plate, a feed adjustment system for the crusher and a feed adjustment method thereof.

[0005] To address the aforementioned problems, this invention provides a feed adjustment system for a crusher, comprising: a fixed base; a feed bottom plate rotatably mounted on the fixed base for conveying raw materials, wherein the feed bottom plate rotates around the fixed base under the impact of the raw materials to change the angle between the feed bottom plate and the horizontal plane; and a hydraulic system including a hydraulic cylinder and an accumulator, wherein the hydraulic cylinder is located below the feed bottom plate, one end of the hydraulic cylinder is rotatably connected to the feed bottom plate and the other end is rotatably connected to the fixed base, the hydraulic cylinder having a compressed state when the raw materials press down on the feed bottom plate and an extended state supporting the feed bottom plate to return to its original position, the accumulator being connected to the hydraulic cylinder, the accumulator storing hydraulic oil flowing out of the hydraulic cylinder when the hydraulic cylinder is in the compressed state, and supplying hydraulic oil to the hydraulic cylinder when the feed bottom plate returns to its original position to drive the hydraulic cylinder to switch to the extended state.

[0006] Optionally, the hinge point between the hydraulic cylinder and the feed base plate is higher than the hinge point between one side of the feed base plate and the fixed seat, so that the feed base plate is in an inclined state.

[0007] Optionally, the hydraulic system may also include a detection component disposed within the hydraulic system to detect the pressure of the hydraulic system.

[0008] Optionally, the hydraulic system also includes an oil pump and an oil tank. The oil pump's inlet is connected to the oil tank, and its outlet is connected to the hydraulic cylinder and accumulator. The oil pump provides hydraulic oil to the hydraulic cylinder and accumulator when the pressure of the hydraulic system is lower than a preset value.

[0009] Optionally, the feed adjustment system of the crusher also includes: a control system, which is electrically connected to the detection components and the oil pump. The control system controls the start and stop of the oil pump according to the detection value of the detection components.

[0010] Optionally, the feed adjustment system of the crusher also includes a feeder connected to the upper side of the feed bottom plate to convey raw materials to the feed bottom plate; the control system is electrically connected to the feeder and controls the feeding speed of the feeder according to the detection value of the detection component.

[0011] Optionally, the detection component is a pressure sensor.

[0012] The present invention also provides a crusher, which includes: the above-described feed adjustment system for the crusher.

[0013] Optionally, the crusher may also include: a frame; a rotor assembly rotatably connected to the frame and adapted to crush raw materials; a drive unit connected to the rotor assembly to drive the rotor assembly to rotate; and a control system electrically connected to the drive unit, the control system controlling the power of the drive unit according to the pressure value detected by the detection component of the feed adjustment system.

[0014] This invention also provides a method for adjusting the feed of a crusher, applied to the aforementioned feed adjustment system. The method for adjusting the feed of a crusher includes the following steps: feeding raw material to a feed bottom plate, the raw material pressing down on the feed bottom plate to make the feed bottom plate rotate around a fixed seat; pressing down on a hydraulic cylinder by the feed bottom plate to switch the hydraulic cylinder to a compression state and supply hydraulic oil to an accumulator; after the raw material passes through the feed bottom plate, supplying hydraulic oil to the hydraulic cylinder through the accumulator to switch the hydraulic cylinder to an extension state and drive the feed bottom plate back to its original position.

[0015] Optionally, the feed adjustment system also includes a detection component, a control system, and a feeder. The detection component is installed in the hydraulic system, and the control system, detection component, and feeder are electrically connected. After the step of pressing down the hydraulic cylinder on the feed base plate to switch the hydraulic cylinder to the compression state and supply hydraulic oil to the accumulator, the system further includes: acquiring the current pressure value of the hydraulic system detected by the detection component; determining whether the current pressure value is greater than a first preset pressure value; when the current pressure value is greater than the first preset pressure value, controlling the feeder to reduce the feeding frequency; when the current pressure value is less than or equal to the first preset pressure value, controlling the feeder to keep the feeding frequency unchanged.

[0016] Optionally, the crusher also includes a rotor assembly and a drive unit, the drive unit drives the rotor assembly to rotate, and the control system is electrically connected to the drive unit; after the step of determining whether the current pressure value is greater than the first preset pressure value, the feed adjustment method further includes: when the current pressure value is greater than the first preset pressure value, controlling the drive unit to increase the power output; when the current pressure value is less than or equal to the first preset pressure value, controlling the power output of the drive unit to remain unchanged.

[0017] Optionally, the hydraulic system also includes an oil pump and an oil tank. The oil pump's inlet is connected to the oil tank, and its outlet is connected to the hydraulic cylinder and accumulator. The control system and the oil pump are electrically connected. After obtaining the current pressure value of the hydraulic system detected by the detection component, the feed adjustment method further includes: determining whether the current pressure value is less than a second preset pressure value; when the current pressure value is less than the second preset pressure value, controlling the oil pump to supply hydraulic oil to the hydraulic cylinder and accumulator; when the current pressure value is greater than or equal to the second preset pressure value, controlling the oil pump to remain stationary; wherein, the second preset pressure value is less than the first preset pressure value.

[0018] The present invention has the following advantages:

[0019] 1. The angle between the feeding base plate and the horizontal plane is changed by rotating around a fixed seat under the impact of the raw material. A hydraulic cylinder is installed below the feeding base plate. When the feeding base plate is pressed down under the impact of the raw material, the feeding base plate presses down on the hydraulic cylinder, and the hydraulic cylinder switches to the compression state. The hydraulic oil pressure in the hydraulic cylinder increases, the oil circuit overflows, and the hydraulic oil enters the accumulator connected to the hydraulic cylinder for energy storage. Then, when the raw material leaves the feeding base plate, the pressure of the feeding base plate on the hydraulic cylinder decreases, the accumulator releases energy, and under the action of the accumulator, the hydraulic cylinder resets and switches to the extension state. The feeding base plate also resets, realizing the automatic adjustment of the angle between the feeding base plate and the horizontal plane. The whole process is based on the change of the pressure of the raw material on the feeding base plate, without the need for manual control, and has a high degree of automation.

[0020] 2. By setting the feed bottom plate in an inclined state, the raw materials can be smoothly slid down from the feed bottom plate.

[0021] 3. By setting up detection components, the pressure value in the hydraulic system can be detected in a timely manner. The detection is timely and the detection results are highly reliable, which is conducive to the system responding in advance.

[0022] 4. When the detection component detects an increase in pressure, it sends a signal back to the control system in real time. The control system then controls the feeder to respond in advance, reducing the feeding frequency and thus reducing the load on the crusher. This reduces the risk of the crusher stalling, ensuring good safety and a high degree of automation.

[0023] 5. When the detection component detects an increase in pressure, it sends a signal to the control system in real time. The control system then instructs the drive unit to respond in advance, causing the engine of the drive unit to increase its power output in advance. This improves the impact resistance of the crusher rotor assembly, reduces the risk of the crusher stalling, and thus improves safety. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the feed adjustment system of a crusher according to an embodiment of the present invention is shown;

[0026] Figure 2 A schematic diagram of the structure of a crusher according to an embodiment of the present invention is shown;

[0027] Figure 3 It shows Figure 2 A schematic diagram of the internal structure of a crusher;

[0028] Figure 4 It shows Figure 3 A magnified view of a part from another perspective;

[0029] Figure 5 A schematic diagram of the oil circuit of a hydraulic system according to an embodiment of the present invention is shown.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Frame; 11. Mounting base; 20. Rotor assembly; 21. Rotor body; 22. Hammer plate; 30. Drive unit; 31. Engine; 32. Clutch; 33. Conveyor belt; 40. Feed bottom plate; 41. First rotating shaft; 42. Second rotating shaft; 51. Hydraulic cylinder; 52. Accumulator; 53. Hydraulic station; 54. Overflow valve; 55. Valve block; 60. Detection components; 70. Control system; 80. Feeder. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] like Figures 1 to 5As shown, the feed adjustment system of the crusher provided in this embodiment includes: a fixed base 11, a feed bottom plate 40, and a hydraulic system. The feed bottom plate 40 is rotatably mounted on the fixed base 11 and is suitable for conveying raw materials. The feed bottom plate 40 rotates around the fixed base 11 under the impact of the raw materials to change the angle between the feed bottom plate 40 and the horizontal plane. The hydraulic system includes a hydraulic cylinder 51 and an accumulator 52. The hydraulic cylinder 51 is located below the feed bottom plate 40, and one end of the hydraulic cylinder 51 is connected to the feed bottom plate 40. One end is rotatably connected to the other end and is rotatably connected to the fixed base 11. The hydraulic cylinder 51 has a compressed state when the raw material is pressed down on the feed base 40 and an extended state when the feed base 40 is supported to return to its original position. The accumulator 52 is connected to the hydraulic cylinder 51. When the hydraulic cylinder 51 is in the compressed state, the accumulator 52 stores the hydraulic oil flowing out of the hydraulic cylinder 51 and supplies hydraulic oil to the hydraulic cylinder 51 when the feed base 40 returns to its original position, so as to drive the hydraulic cylinder 51 to switch to the extended state.

[0037] The feed adjustment system of the crusher in this embodiment changes the angle between the feed base plate 40 and the horizontal plane by rotating around the fixed seat 11 under the impact of the raw material. A hydraulic cylinder 51 is installed below the feed base plate 40. When the feed base plate 40 is pressed down under the impact of the raw material, the feed base plate 40 presses down on the hydraulic cylinder 51, and the hydraulic cylinder 51 switches to the compression state. The hydraulic oil pressure in the hydraulic cylinder 51 increases, the oil circuit overflows, and the hydraulic oil enters the accumulator 52 connected to the hydraulic cylinder 51 for energy storage. Then, when the raw material leaves the feed base plate 40, the pressure of the feed base plate 40 on the hydraulic cylinder 51 decreases, the accumulator 52 releases energy, and under the action of the accumulator 52, the hydraulic cylinder 51 resets and switches to the extended state. The feed base plate 40 resets, realizing the automatic adjustment of the angle between the feed base plate 40 and the horizontal plane. The whole process is realized based on the change of the pressure of the raw material on the feed base plate 40, without the need for manual control, and has a high degree of automation.

[0038] It should be noted that the feed adjustment system of the crusher is applied to the crusher. The feed bottom plate 40 is located at the feed inlet of the crusher. The raw material refers to the material to be crushed, such as stone, brick, concrete, etc. The raw material enters the crusher from top to bottom along the feed bottom plate 40 for subsequent crushing. The raw material falling from top to bottom onto the feed bottom plate 40 impacts the feed bottom plate 40 under the action of gravity. The feed bottom plate 40 rotates around the fixed seat 11 under the impact of the raw material. Different raw materials have different impact effects on the feed bottom plate 40, so the rotation amplitude of the feed bottom plate 40 is different. For example, when When the raw material is a large object such as a large rock, the feed bottom plate 40 rotates more significantly and its inclination angle decreases, thus buffering the raw material, reducing its speed, and decreasing the speed at which it collides with the rotor assembly 20, thereby reducing the risk of breaking the hammer 22 and damaging the rotor body 21. Conversely, when the raw material is a smaller object or contains more water and mud, the impact on the feed bottom plate 40 is smaller, and the feed bottom plate 40 rotates less or not at all, with a larger angle, allowing the raw material to quickly enter the crushing chamber for crushing, reducing material blockage at the feed inlet, and improving crushing efficiency. Here, "above" refers to... Figure 1 , Figure 2 The middle arrow points in the direction of "up"; "down" refers to... Figure 1 , Figure 2 The direction indicated by the middle arrow is "down".

[0039] Specifically, the number of hydraulic cylinders 51 is one or more, preferably two, with the two hydraulic cylinders 51 spaced apart and arranged in parallel for good stability.

[0040] In this embodiment, the hinge point between the hydraulic cylinder 51 and the feed base plate 40 is higher than the hinge point between one side of the feed base plate 40 and the fixed seat 11, so that the feed base plate 40 is in an inclined state. It should be noted that the hinge point between the hydraulic cylinder 51 and the feed base plate 40 is located above the hinge point between one side of the feed base plate 40 and the fixed seat 11; where "above" refers to along... Figure 1 The direction indicated by the middle arrow is "up"; the inclined state refers to the angle between the material and the horizontal plane. By setting the feed base plate 40 in an inclined state, it is ensured that the raw material can slide smoothly down the feed base plate 40. Preferably, the feed base plate 40 is rotatably connected to the fixed base 11 via a first rotating shaft 41, and the hydraulic cylinder 51 is rotatably connected to the feed base plate 40 via a second rotating shaft 42. The other end of the hydraulic cylinder 51 is connected to the fixed base 11 via a pin. Both ends of the hydraulic cylinder 51 can rotate around the shaft. The first rotating shaft 41 and the second rotating shaft 42 are parallel, and the rotating shaft structure is simple and has good stability.

[0041] In this embodiment, the hydraulic system further includes a detection component 60, which is disposed within the hydraulic system to detect the pressure of the hydraulic system. Preferably, the detection component 60 is disposed in the rodless chamber of the hydraulic cylinder 51, which facilitates timely detection of the pressure value in the hydraulic cylinder 51, ensuring timely detection and high reliability of the detection results, thus promoting early system response. It is understood that, as an alternative implementation, the detection component 60 can also be disposed on a pipeline or valve block 55 near the hydraulic cylinder 51, achieving the same purpose of detecting the pressure of the hydraulic system.

[0042] In this embodiment, the hydraulic system further includes an oil pump and an oil tank. The oil pump's inlet is connected to the oil tank, and its outlet is connected to the hydraulic cylinder 51 and the accumulator 52. The oil pump supplies hydraulic oil to the hydraulic cylinder 51 and the accumulator 52 when the pressure of the hydraulic system is lower than a preset value. Specifically, further combined with... Figure 5 As shown, the hydraulic station 53 includes an oil pump and an oil tank. The hydraulic oil in the hydraulic station 53 is diverted through the valve block 55, entering the rod chamber and rodless chamber of the hydraulic cylinder 51 respectively. Furthermore, the oil circuit connected to the rodless chamber of the hydraulic cylinder 51 also has a branch connecting to the accumulator 52. That is, the accumulator 52 is connected to the rodless chamber of the hydraulic cylinder 51. Thus, when the hydraulic cylinder 51 is compressed, the hydraulic oil in the rodless chamber enters the accumulator 52. When the raw material slides down from the feed plate 40, the hydraulic cylinder 51 is unloaded, and the accumulator... Hydraulic oil in 52 is supplied to hydraulic cylinder 51, causing hydraulic cylinder 51 to reset; valve block 55 is connected to hydraulic station 53 by an oil inlet pipe and an oil return pipe. An overflow branch is also provided between the oil inlet pipe and hydraulic station 53. An overflow valve 54 is provided on the overflow branch. When hydraulic oil cannot flow from hydraulic cylinder 51 to accumulator 52 due to blockage or other reasons, the oil in hydraulic cylinder 51 flows back to the oil tank through overflow valve 54 to ensure the pressure safety of the hydraulic system.

[0043] In this embodiment, the feed adjustment system of the crusher further includes a control system 70, which is electrically connected to the detection component 60 and the oil pump. The control system 70 controls the start and stop of the oil pump according to the detection value of the detection component 60. When the pressure of the hydraulic system is detected to be lower than the preset value, it indicates that the oil circuit is depressurized. The detection value of the detection component 60 is fed back to the control system 70 in real time. The control system 70 controls the oil pump to replenish hydraulic oil to the hydraulic cylinder 51 and the accumulator 52 to maintain the normal pressure value of the hydraulic system. No manual operation is required, the response speed is fast and the degree of automation is high.

[0044] In this embodiment, the crusher's feed adjustment system also includes a feeder 80, which is connected to the upper side of the feed base plate 40 to convey raw materials to the feed base plate 40. The raw materials fall from the feeder 80 into the crusher's inlet and slide or roll off the feed base plate 40 into the crushing chamber for crushing. The control system 70 is electrically connected to the feeder 80, and the control system 70 controls the feeding speed of the feeder 80 based on the detection value of the detection component 60. Specifically, the feeder 80 feeds the raw materials to the crusher's inlet and then conveys them to the feed base plate 40. When large materials such as large stones hit the feed base plate 40, the hydraulic system pressure increases. The detection component 60 detects the increased pressure and feeds the signal back to the control system 70 in real time. The control system 70 controls the feeder 80 to respond in advance, reducing the feeding frequency and decreasing the amount of material fed, thus reducing the load on the crusher, lowering the risk of the crusher stalling, and ensuring good safety and a high degree of automation. Here, "upper side" refers to the area along... Figure 1 The side in the direction indicated by the middle arrow, where "up" is located.

[0045] In this embodiment, the detection component 60 is a pressure sensor. Pressure sensors are readily available and provide accurate detection results. On the one hand, when the pressure sensor detects an increase in the pressure of the hydraulic system, it sends a signal to the control system 70 so that the control system 70 can control the feeder 80 and other components to respond in advance. On the other hand, when the pressure sensor detects that the pressure is lower than a preset value, it indicates that the oil circuit is depressurized. The control system 70 then controls the oil pump to replenish hydraulic oil to the hydraulic cylinder 51 and the accumulator 52, thereby maintaining stable system pressure.

[0046] The present invention also provides a crusher, which includes: the above-described feed adjustment system for the crusher.

[0047] In this embodiment, the crusher further includes: a frame 10, a rotor assembly 20, a drive device 30, and a control system 70. The rotor assembly 20 is rotatably connected to the frame 10 and is suitable for crushing raw materials. The drive device 30 is connected to the rotor assembly 20 to drive the rotor assembly 20 to rotate, and the drive device 30 provides power for the rotation of the rotor assembly 20. The control system 70 is electrically connected to the drive device 30, and the control system 70 controls the power of the drive device 30 according to the pressure value detected by the detection component of the feed adjustment system. Specifically, the frame 10 forms a crushing chamber, and the rotor assembly 20 is located in the crushing chamber; the drive unit 30 includes an engine 31, a clutch 32, and a conveyor belt 33. The engine 31 is used to provide driving force, and the output shaft of the engine 31 drives the conveyor belt 33 through the clutch 32. The conveyor belt 33 can move around the roller at one end of the rotor assembly 20 to drive the rotor assembly 20 to rotate. When large raw materials such as large stones hit the feed bottom plate 40, the pressure of the hydraulic system increases. The detection component 60 detects the increase in pressure and feeds the signal back to the control system 70 in real time. The control system 70 controls the drive unit to respond in advance, so that the engine 31 increases the power output in advance, improves the impact resistance of the crusher rotor, reduces the risk of the crusher stalling, and thus improves safety.

[0048] The rotor assembly 20 includes a rotor body 21 and a hammer 22. The rotor body 21 is rotatably connected to the frame 10. The hammer 22 is mounted on the rotor body 21 and is adapted to rotate with the rotor body 21. The hammer 22 is used to crush the raw material and enhance the crushing effect. During the crushing process, the hammer 22 collides directly with the raw material being crushed. Since the hammer 22 is fixed on the rotor body 21, the rotor body 21 is also subjected to the force from the hammer 22. Therefore, by automatically adjusting the angle between the feed bottom plate 40 and the horizontal plane to buffer the raw material, the impact force on the hammer 22 can be reduced, and the damage to the rotor body 21 can also be reduced.

[0049] The present invention also provides a feeding adjustment method for a crusher, applied to the above-mentioned feeding adjustment system. The feeding adjustment method for the crusher includes the following steps: feeding raw material into the feeding bottom plate 40, the raw material pressing down on the feeding bottom plate 40 to make the feeding bottom plate 40 rotate around the fixed seat 11; pressing down on the hydraulic cylinder 51 by the feeding bottom plate 40 to make the hydraulic cylinder 51 switch to the compression state and supply hydraulic oil to the accumulator 52; after the raw material passes through the feeding bottom plate 40, supplying hydraulic oil to the hydraulic cylinder 51 through the accumulator 52 to make the hydraulic cylinder 51 switch to the extension state and drive the feeding bottom plate 40 to return to its original position. The rotation amplitude of the feed base plate 40 around the fixed seat 11 is related to the weight of the raw material. The greater the weight of the raw material, the greater the force applied to the feed base plate 40, and the greater the rotation amplitude of the feed base plate 40. Consequently, the hydraulic cylinder 51 is compressed to a greater extent, and the angle between the feed base plate 40 and the horizontal plane is smaller. This buffers the raw material, reduces the sliding speed of the raw material on the feed base plate 40, and reduces the speed when it collides with the rotor assembly 20, thereby reducing the risk of damage to the rotor assembly 20. The accumulator 52 can release the stored hydraulic oil when the pressure of the feed base plate 40 on the hydraulic cylinder 51 decreases, thereby driving the hydraulic cylinder 51 to extend and realize the reset of the feed base plate 40. The reset process does not require manual adjustment and has a high degree of automation.

[0050] In this embodiment, the feeding adjustment system further includes a detection component 60, a control system 70, and a feeder 80. The detection component 60 is installed in the hydraulic system, and the control system 70 is electrically connected to the detection component 60 and the feeder 80. After the step of pressing down the hydraulic cylinder 51 on the feeding base plate 40 to switch the hydraulic cylinder 51 to the compression state and supply hydraulic oil to the accumulator 52, the system further includes: acquiring the current pressure value of the hydraulic system detected by the detection component 60; determining whether the current pressure value is greater than a first preset pressure value; when the current pressure value is greater than the first preset pressure value, controlling the feeder 80 to reduce the feeding frequency; when the current pressure value is less than or equal to the first preset pressure value, controlling the feeder 80 to keep the feeding frequency unchanged. The first preset pressure value is the maximum allowable pressure value of the hydraulic system that keeps the feeding frequency of the feeder 80 constant. When the current pressure value is detected to be greater than the first preset pressure value, it indicates that there is too much raw material on the current feed bottom plate 40. Too much material to enter the crusher for crushing will cause the crusher to be overloaded. Therefore, it is necessary to control the feeder 80 to reduce the feeding frequency and reduce the feeding in advance in conjunction with the control system 70 to reduce the load on the crusher and reduce the risk of the crusher stalling.

[0051] In this embodiment, the crusher further includes a rotor assembly 20 and a drive device 30. The drive device 30 drives the rotor assembly 20 to rotate, and the control system 70 is electrically connected to the drive device 30. After determining whether the current pressure value is greater than the first preset pressure value, the feed adjustment method further includes: when the current pressure value is greater than the first preset pressure value, controlling the drive device 30 to increase the power output; when the current pressure value is less than or equal to the first preset pressure value, controlling the power output of the drive device 30 to remain unchanged. Specifically, when the current pressure value is detected to be greater than the first preset pressure value, the control system 70 controls the drive device 30 to respond in advance, causing the engine 31 of the drive device 30 to increase the power output in advance, improving the impact resistance of the crusher rotor assembly, reducing the risk of the crusher stalling, and thus improving safety.

[0052] In this embodiment, the hydraulic system further includes an oil pump and an oil tank. The oil pump's inlet is connected to the oil tank, and its outlet is connected to the hydraulic cylinder 51 and the accumulator 52. The control system 70 is electrically connected to the oil pump. After obtaining the current pressure value of the hydraulic system detected by the detection component 60, the feed adjustment method further includes: determining whether the current pressure value is less than a second preset pressure value; when the current pressure value is less than the second preset pressure value, controlling the oil pump to supply hydraulic oil to the hydraulic cylinder 51 and the accumulator 52; when the current pressure value is greater than or equal to the second preset pressure value, controlling the oil pump to remain stationary; wherein, the second preset pressure value is less than the first preset pressure value. It should be noted that the second preset pressure value is the minimum pressure value allowed by the hydraulic system. When the current pressure value is detected to be less than the second preset pressure value, it indicates that the pressure value in the hydraulic system is too low and insufficient to maintain the normal operation of the hydraulic system. Therefore, it is necessary to replenish hydraulic oil in the hydraulic system to keep the pressure value of the hydraulic oil in the hydraulic system above the minimum pressure value, ensuring the normal operation of the hydraulic system, thereby ensuring that the automatic adjustment process of the crusher's feed adjustment system can be smoothly realized.

[0053] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0054] 1. The angle between the feed bottom plate 40 and the horizontal plane can be automatically adjusted. Under normal circumstances, the inclination angle of the feed bottom plate 40 is relatively large, which is conducive to the rapid entry of raw materials into the main crushing chamber and improves the crushing efficiency of the crusher.

[0055] 2. When the feed bottom plate 40 is impacted, the angle between it and the horizontal plane automatically decreases, which buffers large raw materials, reduces the speed when it collides with the crusher rotor assembly 20, and reduces the risk of damage to the hammer 22 and the rotor body 21.

[0056] 3. After the impact angle of the feed base plate 40 decreases, under the action of the hydraulic cylinder 51 and the accumulator 52, the tilt angle of the feed base plate 40 can be quickly restored to its original position.

[0057] 4. By installing a pressure sensor in the hydraulic system, when the hydraulic system pressure increases, the pressure sensor will feed the signal back to the control system 70 in real time. The control system 70 will control the drive device 30 to respond in advance, and the engine 31 will increase the power output in advance, thereby improving the impact resistance of the crusher rotor assembly 20 and reducing the risk of the crusher stalling.

[0058] 5. By installing a pressure sensor in the hydraulic system, when the hydraulic system pressure increases, the pressure sensor will feed the signal back to the control system 70 in real time. The control system 70 will control the feeder 80 to respond in advance, and the feeder 80 will reduce the feeding frequency in advance, reduce the feeding, reduce the load on the crusher, and reduce the risk of the crusher stalling.

[0059] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A crusher, characterized in that, include: Rack (10); Rotor assembly (20), which is rotatably connected to the frame (10) and is suitable for crushing raw materials; The feed adjustment system for the crusher includes: Fixture (11); The feed base plate (40) is rotatably mounted on the fixed seat (11) and is suitable for conveying raw materials. The feed base plate (40) rotates around the fixed seat (11) under the impact of the raw materials to change the angle between the feed base plate (40) and the horizontal plane. The hydraulic system includes a hydraulic cylinder (51) and an accumulator (52). The hydraulic cylinder (51) is located below the feed base plate (40). One end of the hydraulic cylinder (51) is rotatably connected to the feed base plate (40) and the other end is rotatably connected to the fixed seat (11). The hydraulic cylinder (51) has a compressed state when the raw material presses down on the feed base plate (40) and an extended state that supports the feed base plate (40) to return to its original position. The accumulator (52) is connected to the hydraulic cylinder (51). The accumulator (52) stores the hydraulic oil flowing out of the hydraulic cylinder (51) when the hydraulic cylinder (51) is in the compressed state, and supplies the hydraulic oil to the hydraulic cylinder (51) when the feed base plate (40) returns to its original position, so as to drive the hydraulic cylinder (51) to switch to the extended state. The hydraulic system further includes an oil pump and an oil tank. The oil pump's inlet is connected to the oil tank and its outlet is connected to the hydraulic cylinder (51) and the accumulator (52). When the pressure of the hydraulic system is lower than a preset value, the oil pump provides hydraulic oil to the hydraulic cylinder (51) and the accumulator (52). A detection component (60) is disposed in the hydraulic system to detect the pressure of the hydraulic system; A control system (70) is electrically connected to the detection component (60) and the oil pump. The control system (70) controls the start and stop of the oil pump according to the magnitude of the detection value of the detection component (60). A feeder (80) is connected to the upper side of the feed base plate (40) to convey the raw material to the feed base plate (40); a control system (70) is electrically connected to the feeder (80) and controls the feeding speed of the feeder (80) according to the detection value of the detection component (60); The raw material slides or rolls from the feed bottom plate (40) into the crushing chamber for crushing.

2. The crusher according to claim 1, characterized in that, The hinge point between the hydraulic cylinder (51) and the feed base plate (40) is higher than the hinge point between the side of the feed base plate (40) and the fixed seat (11), so that the feed base plate (40) is in an inclined state.

3. The crusher according to any one of claims 1 to 2, characterized in that, The detection component (60) is a pressure sensor.

4. The crusher according to claim 1, characterized in that, The crusher also includes: A drive device (30) is connected to the rotor assembly (20) to drive the rotor assembly (20) to rotate; The control system (70) is electrically connected to the drive device (30). The control system (70) controls the power of the drive device (30) according to the pressure value detected by the detection component (60) of the feed adjustment system.

5. A method for adjusting the feed of a crusher, applied to the crusher according to any one of claims 1-4, characterized in that, The method includes the following steps: Raw materials are fed into the feed base plate (40), and the raw materials press down on the feed base plate (40) so that the feed base plate (40) rotates around the fixed seat (11); The hydraulic cylinder (51) is pressed down by the feed base plate (40) so that the hydraulic cylinder (51) switches to the compression state and delivers hydraulic oil to the accumulator (52); After the raw material passes through the feed base plate (40), the accumulator (52) supplies hydraulic oil to the hydraulic cylinder (51) so that the hydraulic cylinder (51) switches to the extended state and drives the feed base plate (40) to return to its original position.

6. The feed adjustment method for a crusher according to claim 5, characterized in that, The feeding adjustment system also includes a detection component (60), a control system (70), and a feeder (80). The detection component (60) is installed in the hydraulic system, and the control system (70) is electrically connected to the detection component (60) and the feeder (80). After the step of pressing down the hydraulic cylinder (51) on the feed base plate (40) to switch the hydraulic cylinder (51) to the compression state and supply the hydraulic oil to the accumulator (52), the method further includes: Obtain the current pressure value of the hydraulic system detected by the detection component (60); Determine whether the current pressure value is greater than the first preset pressure value; When the current pressure value is greater than the first preset pressure value, the feeder (80) is controlled to reduce the feeding frequency; When the current pressure value is less than or equal to the first preset pressure value, the feeding frequency of the feeder (80) is kept unchanged.

7. The feeding adjustment method according to claim 6, characterized in that, The crusher also includes a rotor assembly (20) and a drive device (30), the drive device (30) drives the rotor assembly (20) to rotate, and the control system (70) is electrically connected to the drive device (30); After determining whether the current pressure value is greater than the first preset pressure value, the feed adjustment method further includes: When the current pressure value is greater than the first preset pressure value, the drive device (30) is controlled to increase the power output; When the current pressure value is less than or equal to the first preset pressure value, the power output of the drive device (30) is kept unchanged.

8. The feeding adjustment method according to claim 6, characterized in that, The hydraulic system also includes an oil pump and an oil tank. The oil pump's inlet is connected to the oil tank and its outlet is connected to the hydraulic cylinder (51) and the accumulator (52). The control system (70) is electrically connected to the oil pump. After obtaining the current pressure value of the hydraulic system detected by the detection component (60), the feed adjustment method further includes: Determine whether the current pressure value is less than the second preset pressure value; When the current pressure value is less than the second preset pressure value, the oil pump is controlled to supply hydraulic oil to the hydraulic cylinder (51) and the accumulator (52); When the current pressure value is greater than or equal to the second preset pressure value, the oil pump is controlled to remain stationary; Wherein, the second preset pressure value is less than the first preset pressure value.

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