Self-adaptive amplitude adjusting structure of vibrating screen and control method

Abstract

The application discloses a vibrating screen self-adaptive amplitude adjusting structure and a control method, relates to the technical field of vibrating screens, and comprises a supporting base, the top of the supporting base being provided with a vibrating screen body, a pressure sensor being arranged on the vibrating screen body, the sensor collecting pressure data of materials on the vibrating screen body in real time, and a self-adaptive structure being arranged between the supporting base and the vibrating screen body, the self-adaptive structure being used for providing buffering for the supporting base and adaptively adjusting amplitude data of the vibrating screen body according to the collected pressure data of the materials on the vibrating screen body, and a vibrating motor being installed on the bottom surface of the vibrating screen body. The self-adaptive structure is arranged, different amplitude data is given by the vibrating screen body to different amounts of materials, the working strength of the vibrating screen self-adaptive amplitude adjusting structure is reduced, the working time of the vibrating screen self-adaptive amplitude adjusting structure is prolonged, the telescopic rod and the rotating seat can synchronously move, the telescopic rod and the rotating seat are interlinked, and the vibrating effect of the vibrating screen body is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of vibrating screen technology, specifically to an adaptive amplitude adjustment structure and control method for vibrating screens. Background Technology

[0002] The self-adaptive amplitude adjustment structure of the vibrating screen is a device that can automatically adjust the amplitude according to the actual working conditions. The amplitude can be adjusted by changing the angle of the eccentric block of the adjustment motor. Increasing the angle of the eccentric block will increase the amplitude, and vice versa.

[0003] Existing adaptive amplitude adjustment structures for vibrating screens include, for example, a vibrating screen structure and combine harvester with adjustable amplitude and frequency disclosed in Chinese patent application CN116020734A. The amplitude adjustment mechanism of this adjustable amplitude and frequency vibrating screen structure includes an inclined connecting member and an amplitude adjustment plate. The lower end of the inclined connecting member is fixedly connected to the vibrating screen body, and the amplitude adjustment plate is oscillating in a vertical plane relative to the higher end of the inclined connecting member. The vibration buffer of this adjustable amplitude and frequency vibrating screen structure cannot be adjusted, and its vibration effect is provided by a single vibrating motor, resulting in limited vibrating screen effect. When there is a large amount of material in the vibrating screen, its screening efficiency will be greatly reduced. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide an adaptive amplitude adjustment structure and control method for vibrating screens, so as to solve the problem that in the prior art, the vibration buffer of the adjustable amplitude and frequency vibrating screen structure cannot be adjusted, and the vibration of the vibrating screen is entirely provided by the vibrating motor, resulting in limited vibrating screen effect.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] The first aspect of the present invention is to provide an adaptive amplitude adjustment structure for a vibrating screen, including a support base, a vibrating screen body on the top of the support base, a pressure sensor on the vibrating screen body, the sensor collecting pressure data of the material on the vibrating screen body in real time, an adaptive structure between the support base and the vibrating screen body, the adaptive structure being used to provide buffering for the support base and to adaptively adjust the amplitude data of the vibrating screen body according to the collected pressure data of the material on the vibrating screen body, and a vibrating motor being installed on the bottom surface of the vibrating screen body.

[0007] As a further aspect of the present invention: the support base includes a base body, a plurality of evenly arranged connecting seats are fixedly connected to the side of the base body, and an amplitude cylinder, a first cylinder and a second cylinder are provided on the top surface of the base body.

[0008] As a further aspect of the present invention: the adaptive structure includes a hydraulic rod sleeve, one end of which is slidably connected to a telescopic rod, and the other end of which is rotatably connected to a rotating seat. The end of the telescopic rod away from the hydraulic rod sleeve is rotatably connected to the rotating seat, and the rotating seat on the hydraulic rod sleeve is movably connected to the top of the connecting seat.

[0009] As a further aspect of the present invention: the top surface of the connecting seat is provided with a connecting groove that fits with the rotating seat, the side wall of the connecting groove is provided with an adaptive adjustment cavity, the adaptive adjustment cavity is provided with two sets of symmetrical output ports, the side of the rotating seat is fixedly connected with an adaptive sealing slider, the adaptive sealing slider divides the adaptive adjustment cavity into a first adjustment cavity and a second adjustment cavity, the first oil cylinder is connected to the first adjustment cavity through an oil pipe, and the second oil cylinder is connected to the second adjustment cavity through an oil pipe.

[0010] As a further aspect of the present invention: the hydraulic rod sleeve is connected to the first adjustment chamber via an oil pipe and an output port.

[0011] As a further aspect of the present invention: the vibrating screen body includes a screen base, a plurality of uniformly arranged mounting seats are fixedly connected to the side of the screen base, a rotating seat on the telescopic rod is movably connected to the bottom of the mounting seat, a connecting rod is connected to the top surface of the mounting seat, and a screen is connected to the top end of the connecting rod.

[0012] As a further aspect of the present invention: the vibrating motor includes a motor body, a motor shaft is inserted inside the motor body, an eccentric wheel is fixedly connected to one end of the outer side of the motor shaft, an adjusting block is slidably connected to the bottom surface of the eccentric wheel, and the motor body is fixed to the center position of the bottom surface of the vibrating screen body by bolts.

[0013] As a further aspect of the present invention: a conveying pipe is fixedly connected to the side of the motor body, a connecting hose is connected to one end of the conveying pipe, the end of the connecting hose away from the conveying pipe is connected to the amplitude cylinder, and an internal pipe is connected to the other end of the conveying pipe. A sealing ring is connected to the end of the internal pipe away from the conveying pipe, and the sealing ring is in a sealing sliding connection with one end of the inner side of the motor shaft.

[0014] As a further aspect of the present invention: the motor shaft has a built-in groove running through it, the eccentric wheel has a conveying groove inside it, and the eccentric wheel has an adjustment groove that matches the adjustment block near the adjustment block inside it. The built-in groove is connected to the adjustment groove through the conveying groove.

[0015] A second aspect of the present invention is to provide a control method for an adaptive amplitude adjustment structure of a vibrating screen, comprising the following steps:

[0016] S1: The pressure sensor collects real-time pressure data of the material on the vibrating screen.

[0017] S2: Preset pressure threshold level based on the material to be screened on the vibrating screen body;

[0018] S3: Compare the collected pressure data of the material on the vibrating screen with the preset pressure threshold level, and generate the pressure threshold level corresponding to the pressure data;

[0019] S4: Based on the pressure threshold level corresponding to the generated pressure data, the adaptive structure adaptively adjusts the amplitude data of the vibrating screen body.

[0020] The beneficial effects of this invention are:

[0021] 1. In this invention, a high pressure threshold P is preset through an adaptive structure. 高 medium pressure threshold P 中 and low pressure threshold P 低 When the pressure data is greater than or equal to P 高 When the pressure data is below a certain threshold, it indicates that the pressure data is at a high pressure threshold level. Those skilled in the art can preset different amplitude data corresponding to different pressure threshold levels, and then adaptively adjust the amplitude data of the vibrating screen body based on the high pressure threshold level of the pressure data of the material on the vibrating screen body. When the pressure data is less than P... 高 At the same time greater than or equal to P 中 If the pressure data is within the medium pressure threshold level, then the amplitude data of the vibrating screen is adaptively adjusted based on the medium pressure threshold level of the material pressure data collected on the vibrating screen body. When the pressure data is less than P... 中 At the same time greater than or equal to P 低 If the pressure data is below the low pressure threshold level, then the vibration amplitude data of the vibrating screen body is adaptively adjusted based on the low pressure threshold level of the pressure data of the material on the vibrating screen body. When the pressure data is less than P... 低 If the vibration motor is turned off, the screening operation of the vibrating screen can be stopped. Alternatively, it can indicate that more material needs to be added to the vibrating screen. This allows the vibrating screen to provide different amplitude data for different amounts of material, reducing the workload of the adaptive amplitude adjustment structure and extending its working time.

[0022] 2. In this invention, since the hydraulic rod sleeve is connected to the first adjustment cavity through the oil pipe and output port, the oil tank in the first oil cylinder, the first adjustment cavity, and the inner cavity of the hydraulic rod sleeve are interconnected. When the vibration motor is turned on, the length between the hydraulic rod sleeve and the telescopic rod will continuously change when the vibration motor causes the vibrating screen body to vibrate. At the same time, the rotating seat will also rotate freely back and forth in the connecting groove. When the rotating seat rotates, it will drive the adaptive sealing slider to rotate synchronously, that is, the adaptive sealing slider will slide in the adaptive adjustment cavity. The oil tank in the first oil cylinder, the first adjustment cavity, and the hydraulic rod sleeve form a set of linked buffers. When the hydraulic oil in the hydraulic rod sleeve enters the first adjustment cavity, it increases the oil pressure of the hydraulic oil in the first adjustment cavity. The increased oil pressure of the hydraulic oil in the first adjustment cavity can drive the adaptive sealing slider. Taking the figure as an example, the adaptive sealing slider slides clockwise in the adaptive adjustment cavity, so that the telescopic rod and the rotating seat can move synchronously. The mutual linkage between the telescopic rod and the rotating seat greatly improves the vibration effect of the vibrating screen body. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the adaptive amplitude adjustment structure of the vibrating screen of the present invention;

[0025] Figure 2 This is a front view of the adaptive amplitude adjustment structure of the vibrating screen of the present invention;

[0026] Figure 3 This is a schematic diagram of the overall structure of the adaptive structure in this invention;

[0027] Figure 4 This is a schematic diagram of the supporting base structure in this invention;

[0028] Figure 5 This is a schematic diagram of the connecting seat in this invention;

[0029] Figure 6 This is a partial structural diagram of the adaptive structure in this invention;

[0030] Figure 7 This is a cross-sectional view of the connecting seat in this invention;

[0031] Figure 8 This is a schematic diagram of the structure of the vibrating screen body in this invention;

[0032] Figure 9 This is a schematic diagram of the overall structure of the vibrating screen body in this invention;

[0033] Figure 10 This is a schematic diagram of the structure of the vibration motor in this invention;

[0034] Figure 11 This is a cross-sectional view of the vibration motor in this invention;

[0035] Figure 12 This is a cross-sectional view of the eccentric wheel in this invention;

[0036] Figure 13 This is a schematic diagram of the internal structure of the first and second oil cylinders of the present invention.

[0037] Reference numerals: 1. Support base; 11. Base body; 12. Connecting seat; 121. Connecting groove; 122. Adaptive adjustment cavity; 122a. First adjustment cavity; 122b. Second adjustment cavity; 123. Output port; 13. Amplitude cylinder; 14. First cylinder; 15. Second cylinder; 161. Cylinder housing; 162. Hydraulic cylinder; 163. Push plate; 164. Compression spring; 165. Oil tank; 166. Piston; 2. Adaptive structure; 21. Hydraulic rod sleeve; 22. Telescopic rod; 23. Rotary seat; 24. Adaptive sealing slider; 3. Vibrating screen body; 31. Screen base; 32. Mounting seat; 33. Connecting rod; 34. Screen mesh; 4. Vibrating motor; 41. Motor body; 42. Eccentric wheel; 421. Conveying trough; 422. Adjusting trough; 43. Adjusting block; 44. Conveying pipe; 45. Connecting hose; 46. Internal pipe; 47. Sealing ring; 48. Motor shaft; 49. Internal groove. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0039] Example 1

[0040] like Figures 1-12As shown, this invention discloses an adaptive amplitude adjustment structure for a vibrating screen, including a support base 1 with a vibrating screen body 3 on its top. A pressure sensor is installed on the vibrating screen body 3, and the sensor collects the pressure data of the material on the vibrating screen body 3 in real time. It should be noted that when the material to be screened is put into the vibrating screen body 3, the pressure sensor on the vibrating screen body 3 can collect the pressure data of the material on the vibrating screen body 3. Those skilled in the art can preset different pressure thresholds. An adaptive structure 2 is set between the support base 1 and the vibrating screen body 3. The adaptive structure 2 is used to provide a buffer for the support base 1 and adaptively adjust the amplitude data of the vibrating screen body 3 according to the collected pressure data of the material on the vibrating screen body 3. Specifically, based on different pressure thresholds, the amplitude data of the vibrating screen body 3 is adaptively adjusted according to the collected pressure data of the material on the vibrating screen body 3. A vibration motor 4 is installed on the bottom surface of the vibrating screen body 3.

[0041] It should be noted that, firstly, the material to be screened is fed onto the vibrating screen body 3, and then the vibration motor 4 is turned on. The pressure sensor on the vibrating screen body 3 can then collect the pressure data exerted by the material on the vibrating screen body 3. Those skilled in the art can pre-set different pressure thresholds; for example, the pressure thresholds can be divided into three levels, namely, a high pressure threshold P... 高 medium pressure threshold P 中 and low pressure threshold P 低 When the pressure data is greater than or equal to P 高 When the pressure data is below a certain threshold, it indicates that the pressure data is at a high pressure threshold level. Those skilled in the art can preset different amplitude data corresponding to different pressure threshold levels, and then adaptively adjust the amplitude data of the vibrating screen body 3 based on the high pressure threshold level of the pressure data of the material on the vibrating screen body 3. When the pressure data is less than P... 高 At the same time greater than or equal to P 中 If the pressure data is within the medium pressure threshold level, then based on the medium pressure threshold level of the pressure data of the material on the vibrating screen body 3, the amplitude data of the vibrating screen body 3 is adaptively adjusted. When the pressure data is less than P... 中 At the same time greater than or equal to P 低 If the pressure data is below the low pressure threshold level, then based on the low pressure threshold level of the pressure data of the material on the vibrating screen body 3, the amplitude data of the vibrating screen body 3 is adaptively adjusted. When the pressure data is less than P... 低 If the screen shows insufficient material on the vibrating screen body 3, the vibrating motor 4 can be turned off to end the screening operation of the vibrating screen body 3, or a prompt can be made to continue adding material to the vibrating screen body 3.

[0042] By setting the adaptive structure 2, the vibrating screen body 3 can provide different amplitude data for different amounts of material, which reduces the workload of the adaptive amplitude adjustment structure of the vibrating screen and extends the working time of the adaptive amplitude adjustment structure of the vibrating screen.

[0043] like Figure 4 As shown, the support base 1 includes a base body 11, and a plurality of evenly arranged connecting seats 12 are fixedly connected to the side of the base body 11, so as to... Figure 4 For example, six sets of connecting seats 12 are set, and the top surface of the base body 11 is provided with an amplitude cylinder 13, a first cylinder 14 and a second cylinder 15. It should be noted that the specifications and types of the amplitude cylinder 13, the first cylinder 14 and the second cylinder 15 are all adaptively selected by those skilled in the art based on the working intensity of the adaptive amplitude adjustment structure of the vibrating screen.

[0044] like Figures 3-7 As shown, the adaptive structure 2 includes a hydraulic rod sleeve 21. One end of the hydraulic rod sleeve 21 is slidably connected to a telescopic rod 22, and the other end of the hydraulic rod sleeve 21 is rotatably connected to a rotating seat 23. The end of the telescopic rod 22 away from the hydraulic rod sleeve 21 is rotatably connected to the rotating seat 23. The rotating seat 23 on the hydraulic rod sleeve 21 is movably connected to the top of the connecting seat 12. It should be noted that the inner cavity of the hydraulic rod sleeve 21 matches the telescopic rod 22, and the inner cavity of the hydraulic rod sleeve 21 is filled with hydraulic oil. The position of the telescopic rod 22 is controlled by controlling the pressure of the hydraulic oil. It should also be noted that the rotating seats 23 are connected to both the hydraulic rod sleeve 21 and the telescopic rod 22. The rotating seats 23 on the hydraulic rod sleeve 21 and the telescopic rod 22 are respectively connected to the connecting seat 12 on the base body 11 and the vibrating screen body 3. Furthermore, the positions of the rotating seats 23 on the hydraulic rod sleeve 21 and the telescopic rod 22 are staggered, so that the hydraulic rod sleeve 21 and the telescopic rod 22 are inclined as a whole.

[0045] like Figures 3-7 As shown, the top surface of the connecting seat 12 has a connecting groove 121 that fits with the rotating seat 23. The side wall of the connecting groove 121 has an adaptive adjustment cavity 122. The rotating seat 23 can rotate freely in the connecting groove 121. The adaptive adjustment cavity 122 has two sets of symmetrical output ports 123. An adaptive sealing slider 24 is fixedly connected to the side of the rotating seat 23. The adaptive sealing slider 24 fits with the adaptive adjustment cavity 122. The adaptive sealing slider 24 divides the adaptive adjustment cavity 122 into a first adjustment cavity 122a and a second adjustment cavity 122b. When the rotating seat 23 rotates, the rotating seat 23 will drive the adaptive sealing slider 24 to rotate synchronously, that is, the adaptive sealing slider 24 will slide in the adaptive adjustment cavity 122, thereby controlling the size of the first adjustment cavity 122a and the second adjustment cavity 122b. The first oil cylinder 14 is connected to the first adjustment cavity 122a through an oil pipe, and the second oil cylinder 15 is connected to the second adjustment cavity 122b through an oil pipe.

[0046] It should be noted that after the vibration motor 4 is turned on, the vibration motor 4 will cause the vibrating screen body 3 to vibrate. When the vibrating screen body 3 vibrates, the length between the hydraulic rod sleeve 21 and the telescopic rod 22 will continuously change. At the same time, the rotating seat 23 will also rotate freely back and forth in the connecting groove 121. When the rotating seat 23 rotates, the rotating seat 23 will drive the adaptive sealing slider 24 to rotate synchronously. That is, the adaptive sealing slider 24 will slide in the adaptive adjustment cavity 122, thereby controlling the size of the first adjustment cavity 122a and the second adjustment cavity 122b. Since the first oil cylinder 14 is connected to the first adjustment cavity 122a through an oil pipe and the second oil cylinder 15 is connected to the second adjustment cavity 122b through an oil pipe, when the size of the first adjustment cavity 122a and the second adjustment cavity 122b changes, the hydraulic oil in the first adjustment cavity 122a and the second adjustment cavity 122b also changes flow at the same time.

[0047] like Figure 13 As shown, both the first cylinder 14 and the second cylinder 15 include a cylinder shell 161. The top of the inner cavity of the cylinder shell 161 is fixedly connected to a hydraulic cylinder 162 by bolts. The bottom of the hydraulic cylinder 162 is fixedly connected to a push plate 163 by a hydraulic rod. The bottom surface of the push plate 163 is fixedly connected to a compression spring 164. The bottom end of the compression spring 164 is fixedly connected to a piston 166. An oil tank 165 is nested outside the piston 166. The inside of the oil tank 165 is filled with hydraulic oil. The oil tanks 165 in the first cylinder 14 and the second cylinder 15 are respectively connected to the first adjustment chamber 122a and the second adjustment chamber 122b through oil pipes.

[0048] Since the hydraulic sleeve 21 is connected to the first adjustment cavity 122a via an oil pipe and output port 123, the oil tank 165 in the first cylinder 14, the first adjustment cavity 122a, and the inner cavity of the hydraulic sleeve 21 are interconnected. When the vibrating motor 4 is turned on, and the vibrating motor 4 causes the vibrating screen body 3 to vibrate, the length between the hydraulic sleeve 21 and the telescopic rod 22 will continuously change. At the same time, the rotating seat 23 will also rotate freely back and forth in the connecting groove 121. When the rotating seat 23 rotates, it will drive the adaptive sealing slider 24 to rotate synchronously, that is, the adaptive sealing slider 24 will slide in the adaptive adjustment cavity 122. The oil tank 165 in the first cylinder 14, the first adjustment cavity 122a, and the hydraulic sleeve 21 form a set of linked buffers. When the hydraulic oil in the hydraulic sleeve 21 enters the first adjustment cavity 122a, it increases the oil pressure of the hydraulic oil in the first adjustment cavity 122a. The increased oil pressure of the hydraulic oil in the first adjustment cavity 122a can drive the adaptive sealing slider 24. Figure 7For example, the adaptive sealing slider 24 slides clockwise in the adaptive adjustment cavity 122, so that the telescopic rod 22 and the rotating seat 23 can move synchronously. The mutual linkage between the telescopic rod 22 and the rotating seat 23 greatly improves the vibration effect of the vibrating screen body 3.

[0049] When the adaptive sealing slider 24 slides counterclockwise within the adaptive adjustment cavity 122, it increases the volume of the first adjustment cavity 122a to receive hydraulic oil from the hydraulic rod sleeve 21, while simultaneously decreasing the volume of the second adjustment cavity 122b. This inevitably increases the oil pressure in the second adjustment cavity 122b, causing the hydraulic oil to enter the oil tank 165 corresponding to the second cylinder 15. This compresses the compression spring 164 corresponding to the oil tank 165, increasing its elastic force. In this way, the compression spring 164 can then react on the corresponding piston. The piston 166 squeezes the hydraulic oil in the oil tank 165 corresponding to the second cylinder 15, causing the hydraulic oil to enter the second adjustment chamber 122b. The hydraulic oil in the second adjustment chamber 122b then acts on the adaptive sealing slider 24, causing the adaptive sealing slider 24 to rotate counterclockwise. The counterclockwise rotating adaptive sealing slider 24 squeezes the hydraulic oil in the first adjustment chamber 122a, causing the hydraulic oil in the first adjustment chamber 122a to enter the inner cavity of the hydraulic rod sleeve 21, pushing the telescopic rod 22, so that the vibrating screen body 3 can continuously reciprocate.

[0050] Additionally, it should be noted that hydraulic cylinder 162 can be opened, which will drive push plate 163 via hydraulic rod to adjust the position of push plate 163. When push plate 163 compresses compression spring 164, it will inevitably increase the elastic force of compression spring 164. This will shorten the sliding distance of adaptive sealing slider 24 in adaptive adjustment cavity 122, thereby reducing the vibration amplitude of vibrating screen body 3. Conversely, when push plate 163 pulls compression spring 164, it will inevitably decrease the elastic force of compression spring 164. This will increase the sliding distance of adaptive sealing slider 24 in adaptive adjustment cavity 122, thereby increasing the vibration amplitude of vibrating screen body 3. Therefore, those skilled in the art can use a computer to generate a functional relationship of the change in sliding distance of adaptive sealing slider 24 in adaptive adjustment cavity 122 based on the change in elastic force of compression spring 164, thereby adaptively adjusting the amplitude data of vibrating screen body 3.

[0051] Example 2

[0052] like Figure 1 , Figure 8 and Figure 9As shown, the vibrating screen body 3 includes a screen base 31. Several uniformly arranged mounting seats 32 are fixedly connected to the side of the screen base 31. The rotating seat 23 on the telescopic rod 22 is movably connected to the bottom of the mounting seat 32. A connecting rod 33 is connected to the top surface of the mounting seat 32. A screen 34 is connected to the top of the connecting rod 33. It should be noted that the number of mounting seats 32 on the side of the screen base 31 is the same as that of the connecting seats 12. However, when the adaptive structure 2 connects the connecting seats 12 on the base body 11 and the mounting seats 32 on the screen base 31, the mounting seats 32 and the connecting seats 12 should be staggered so that the hydraulic rod sleeve 21 and the telescopic rod 22 are inclined as a whole. The top of the screen base 31 is connected to the screen 34 through the connecting rod 33. The top of the screen 34 can also be connected to another screen 34 through another set of connecting rods 33. The number of screens 34 on the top of the screen base 31 and the mesh size of the screen 34 are adaptively selected by those skilled in the art according to the type of material to be screened.

[0053] Example 3

[0054] like Figure 1 , Figure 10 , Figure 11 and Figure 12 As shown, the vibrating motor 4 includes a motor body 41, a motor shaft 48 inserted inside the motor body 41, an eccentric wheel 42 fixedly connected to one end of the outer side of the motor shaft 48, and an adjusting block 43 slidably connected to the bottom surface of the eccentric wheel 42. The motor body 41 is fixed to the center position of the bottom surface of the vibrating screen body 3 by bolts. When in use, the motor body 41 is opened, and the power of the motor body 41 can be transmitted to the eccentric wheel 42 through the motor shaft 48, causing the eccentric wheel 42 to rotate at high speed. The high-speed rotating eccentric wheel 42 can cause the motor body 41 to vibrate, and this vibration will be transmitted to the vibrating screen body 3, causing the vibrating screen body 3 to vibrate.

[0055] like Figure 1 , Figure 10 , Figure 11 and Figure 12 As shown, a conveying pipe 44 is fixedly connected to the side of the motor body 41. One end of the conveying pipe 44 is connected to a connecting hose 45. The end of the connecting hose 45 away from the conveying pipe 44 is connected to the amplitude cylinder 13. The amplitude cylinder 13 can inject or draw hydraulic oil from the conveying pipe 44 through the connecting hose 45. The other end of the conveying pipe 44 is connected to an internal pipe 46. The end of the internal pipe 46 away from the conveying pipe 44 is connected to a sealing ring 47. The sealing ring 47 is slidably connected to the inner side of the motor shaft 48, which does not affect the high-speed rotation of the motor shaft 48. An internal groove 49 runs through the inside of the motor shaft 48. A conveying groove 421 is opened inside the eccentric wheel 42. An adjustment groove 422 that fits the adjustment block 43 is opened inside the eccentric wheel 42 near the adjustment block 43. The internal groove 49 is connected to the adjustment groove 422 through the conveying groove 421.

[0056] It should be noted that when it is necessary to improve the vibration effect of the vibrating screen body 3, the amplitude cylinder 13 can be opened, so that the amplitude cylinder 13 draws hydraulic oil from the conveying pipe 44 through the connecting hose 45. Since the other end of the conveying pipe 44 is connected to the built-in pipe 46, and the end of the built-in pipe 46 away from the conveying pipe 44 is connected to the sealing ring 47, the sealing ring 47 is slidably connected to the inner end of the motor shaft 48. The built-in groove 49 is connected to the adjustment groove 422 through the conveying groove 421, so the conveying pipe 44 can draw hydraulic oil from the adjustment groove 422, so that the adjustment block 43 moves to the inner end of the adjustment groove 422. When the adjustment block 43 moves to the inner end of the adjustment groove 422, the distance between the center of gravity of the eccentric wheel 42 and the center of the circle will increase, thereby improving the vibration effect generated by the eccentric wheel 42.

[0057] When it is necessary to reduce the vibration effect of the vibrating screen body 3, the amplitude cylinder 13 can be opened, and hydraulic oil can be injected into the conveying pipe 44 through the connecting hose 45. Since the other end of the conveying pipe 44 is connected to the built-in pipe 46, and the end of the built-in pipe 46 away from the conveying pipe 44 is connected to the sealing ring 47, the sealing ring 47 is slidably connected to the inner end of the motor shaft 48. The built-in groove 49 is connected to the adjustment groove 422 through the conveying groove 421, so the conveying pipe 44 can inject hydraulic oil into the adjustment groove 422, causing the adjustment block 43 to move to the outer end of the adjustment groove 422. When the adjustment block 43 moves to the outer end of the adjustment groove 422, the distance between the center of gravity of the eccentric wheel 42 and the center of the circle will be reduced, thereby reducing the vibration effect generated by the eccentric wheel 42.

[0058] Example 4

[0059] like Figures 1-13 As shown, this invention discloses a control method for an adaptive amplitude adjustment structure of a vibrating screen, comprising the following steps:

[0060] S1: The pressure sensor collects the pressure data of the material on the vibrating screen body 3 in real time;

[0061] It should be noted that the specifications and type of the pressure sensor are adapted to the specifications of the screen 34 by those skilled in the art, and the number and position of the pressure sensor are adapted to the shape of the screen 34 by those skilled in the art, so as to ensure that the pressure sensor can accurately collect the pressure data of the material on the vibrating screen body 3. Since there are multiple screens 34 on the vibrating screen body 3, the pressure sensor can also be divided into multiple groups, with multiple pressure sensors set on each screen 34.

[0062] S2: Preset pressure threshold level based on the material to be screened on the vibrating screen body 3;

[0063] It should be noted that those skilled in the art can pre-set different pressure thresholds; for example, the pressure thresholds can be divided into three levels, namely, the high pressure threshold P. 高 medium pressure threshold P 中 and low pressure threshold P 低 .

[0064] S3: Compare the pressure data of the material on the collected vibrating screen body 3 with the preset pressure threshold level, and generate the pressure threshold level corresponding to the pressure data;

[0065] It should be noted that when the pressure data is greater than or equal to P 高 When the pressure data is below a certain threshold, it indicates that the pressure data is at a high pressure threshold level. Those skilled in the art can preset different amplitude data corresponding to different pressure threshold levels, and then adaptively adjust the amplitude data of the vibrating screen body 3 based on the high pressure threshold level of the pressure data of the material on the vibrating screen body 3. When the pressure data is less than P... 高 At the same time greater than or equal to P 中 If the pressure data is within the medium pressure threshold level, then based on the medium pressure threshold level of the pressure data of the material on the vibrating screen body 3, the amplitude data of the vibrating screen body 3 is adaptively adjusted. When the pressure data is less than P... 中 At the same time greater than or equal to P 低 If the pressure data is below the low pressure threshold level, then based on the low pressure threshold level of the pressure data of the material on the vibrating screen body 3, the amplitude data of the vibrating screen body 3 is adaptively adjusted. When the pressure data is less than P... 低 If the screen shows insufficient material on the vibrating screen body 3, the vibrating motor 4 can be turned off to end the screening operation of the vibrating screen body 3, or a prompt can be made to continue adding material to the vibrating screen body 3.

[0066] S4: Based on the pressure threshold level corresponding to the generated pressure data, the adaptive structure 2 adaptively adjusts the amplitude data of the vibrating screen body 3.

[0067] It should be noted that those skilled in the art achieve adaptive adjustment of the amplitude data of the vibrating screen body 3 by using the hydraulic cylinder 162 in the first cylinder 14 and the second cylinder 15 to realize the adaptive structure 2. Specifically, when the hydraulic cylinder 162 is opened, it drives the push plate 163 through the hydraulic rod to adjust the position of the push plate 163. When the push plate 163 squeezes the compression spring 164, it will inevitably increase the elastic force of the compression spring 164. In this way, the sliding distance of the adaptive sealing slider 24 in the adaptive adjustment cavity 122 will be shortened, which means that the vibration amplitude of the vibrating screen body 3 is reduced. Conversely, when the push plate 163 pulls the compression spring 164, it will inevitably decrease the elastic force of the compression spring 164. In this way, the sliding distance of the adaptive sealing slider 24 in the adaptive adjustment cavity 122 will be increased, which means that the vibration amplitude of the vibrating screen body 3 is increased. Therefore, those skilled in the art can use a computer to generate a functional relationship of the change in the sliding distance of the adaptive sealing slider 24 in the adaptive adjustment cavity 122 based on the change in the elastic force of the compression spring 164, thereby adaptively adjusting the amplitude data of the vibrating screen body 3.

[0068] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A vibrating screen adaptive amplitude adjustment structure, characterized in that, include: The support base (1) has a vibrating screen body (3) on its top. The support base (1) includes a base body (11). Several evenly arranged connecting seats (12) are fixedly connected to the side of the base body (11). An amplitude cylinder (13), a first cylinder (14), and a second cylinder (15) are provided on the top surface of the base body (11). An adaptive structure (2) is set between the support base (1) and the vibrating screen body (3). The adaptive structure (2) includes a hydraulic rod sleeve (21). One end of the hydraulic rod sleeve (21) is slidably connected to a telescopic rod (22). The other end of the hydraulic rod sleeve (21) is rotatably connected to a rotating seat (23). The end of the telescopic rod (22) away from the hydraulic rod sleeve (21) is rotatably connected to the rotating seat (23). The rotating seat (23) on the hydraulic rod sleeve (21) is movably connected to the top of the connecting seat (12). There are multiple adaptive structures (2). All the adaptive structures (2) are evenly distributed and inclined on the circumference of the support base (1). Vibration motor (4) is installed on the bottom surface of the vibrating screen body (3); The top surface of the connecting seat (12) is provided with a connecting groove (121) that fits with the rotating seat (23). The side wall of the connecting groove (121) is provided with an adaptive adjustment cavity (122). The adaptive adjustment cavity (122) is provided with two sets of symmetrical output ports (123). The side of the rotating seat (23) is fixedly connected with an adaptive sealing slider (24). The adaptive sealing slider (24) divides the adaptive adjustment cavity (122) into a first adjustment cavity (122a) and a second adjustment cavity (122b). The first hydraulic cylinder (14) is connected to the first adjusting chamber (122a) via an oil pipe, and the second hydraulic cylinder (15) is connected to the second adjusting chamber (122b) via an oil pipe; both the first hydraulic cylinder (14) and the second hydraulic cylinder (15) include a cylinder shell (161), the top of the inner cavity of the cylinder shell (161) is fixedly connected to a hydraulic cylinder (162) by bolts, the bottom of the hydraulic cylinder (162) is fixedly connected to a push plate (163) via a hydraulic rod, and the bottom surface of the push plate (163) is fixedly connected to a compression spring (163). 4) A piston (166) is fixedly connected to the bottom end of the compression spring (164). An oil tank (165) is nested outside the piston (166). The oil tank (165) is filled with hydraulic oil. The oil tanks (165) in the first cylinder (14) and the second cylinder (15) are respectively connected to the first adjustment chamber (122a) and the second adjustment chamber (122b) through oil pipes. The hydraulic rod sleeve (21) is connected to the first adjustment chamber (122a) through oil pipes and the output port (123). A pressure sensor is installed on the vibrating screen body (3), and the sensor collects the pressure data of the material on the vibrating screen body (3) in real time.

2. The adaptive amplitude adjustment structure for a vibrating screen according to claim 1, characterized in that, The adaptive structure (2) is used to provide a buffer for the support base (1) and to adaptively adjust the amplitude data of the vibrating screen body (3) according to the pressure data of the material on the vibrating screen body (3) collected.

3. The adaptive amplitude adjustment structure for a vibrating screen according to claim 1, characterized in that, The vibrating screen body (3) includes a screen base (31), and several uniformly arranged mounting seats (32) are fixedly connected to the side of the screen base (31). The rotating seat (23) on the telescopic rod (22) is movably connected to the bottom of the mounting seat (32). A connecting rod (33) is connected to the top surface of the mounting seat (32), and a screen (34) is connected to the top of the connecting rod (33).

4. The adaptive amplitude adjustment structure for a vibrating screen according to claim 1, characterized in that, The vibrating motor (4) includes a motor body (41), a motor shaft (48) is inserted inside the motor body (41), an eccentric wheel (42) is fixedly connected to one end of the outer side of the motor shaft (48), an adjusting block (43) is slidably connected to the bottom surface of the eccentric wheel (42), and the motor body (41) is fixed to the center of the bottom surface of the vibrating screen body (3) by bolts.

5. The adaptive amplitude adjustment structure for a vibrating screen according to claim 4, characterized in that, A conveying pipe (44) is fixedly connected to the side of the motor body (41). One end of the conveying pipe (44) is connected to a connecting hose (45). The end of the connecting hose (45) away from the conveying pipe (44) is connected to the amplitude cylinder (13). The other end of the conveying pipe (44) is connected to an internal pipe (46). The end of the internal pipe (46) away from the conveying pipe (44) is connected to a sealing ring (47). The sealing ring (47) is in a sealed sliding connection with one end of the inner side of the motor shaft (48).

6. The adaptive amplitude adjustment structure for a vibrating screen according to claim 5, characterized in that, The motor shaft (48) has a built-in groove (49) running through it. The eccentric wheel (42) has a conveying groove (421) inside it. The eccentric wheel (42) has an adjustment groove (422) that matches the adjustment block (43) inside it near the adjustment block (43). The built-in groove (49) is connected to the adjustment groove (422) through the conveying groove (421).

7. A control method for the adaptive amplitude adjustment structure of the vibrating screen as described in claim 1, characterized in that, Includes the following steps: S1: The pressure sensor collects the pressure data of the material on the vibrating screen body (3) in real time; S2: Based on the preset pressure threshold level of the material to be screened on the vibrating screen body (3); S3: Compare the pressure data of the material on the vibrating screen body (3) with the preset pressure threshold level, and generate the pressure threshold level corresponding to the pressure data; S4: Based on the pressure threshold level corresponding to the generated pressure data, the adaptive structure (2) adaptively adjusts the amplitude data of the vibrating screen body (3).

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