Vibrating screen self-adaptive amplitude adjusting structure and control method

Abstract

The invention discloses a vibrating screen self-adaptive amplitude adjusting structure and a control method, and relates to the technical field of vibrating screens. The vibrating screen self-adaptive amplitude adjusting structure comprises a supporting base, a vibrating screen body is arranged on the top of the supporting base, and a pressure sensor is arranged on the vibrating screen body and collects pressure data of materials on the vibrating screen body in real time; a self-adaptive structure is arranged between a supporting base and a vibrating screen body, the self-adaptive structure is used for providing buffering for the supporting base and adjusting amplitude data of the vibrating screen body in a self-adaptive mode according to collected pressure data of materials on the vibrating screen body, and a vibrating motor is installed on the bottom face of the vibrating screen body. Through the arranged self-adaptive structure, the vibrating screen body can provide different amplitude data according to different quantities of materials, the working intensity of the self-adaptive amplitude adjusting structure of the vibrating screen is reduced, the working time of the self-adaptive amplitude adjusting structure of the vibrating screen is prolonged, the telescopic rod and the rotating seat can move synchronously, and the vibrating effect is improved. And through mutual linkage of the telescopic rod and the rotating seat, the vibration effect of the vibration screen body is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of vibrating screens, and in particular to a self-adaptive amplitude adjustment structure and a control method for vibrating screens. Background Art

[0002] The 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. The existing vibrating screen adaptive amplitude adjustment structure, for example, a Chinese patent application with publication number CN116020734A discloses an amplitude and frequency adjustable vibrating screen structure and a combine harvester, wherein the amplitude adjustment mechanism of the amplitude and frequency adjustable 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 swingably arranged in a vertical plane relative to the high end of the inclined connecting member. The vibration buffer of the amplitude and frequency adjustable vibrating screen structure cannot be adjusted, and its vibration effect is provided by a vibration motor, resulting in limited effect of the vibrating screen. When there are more materials in the vibrating screen, its screening efficiency will be greatly reduced. Summary of the invention

[0003] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a vibrating screen adaptive amplitude adjustment structure and control method, so as to solve the problem in the prior art that the vibration buffer of the amplitude and frequency adjustable vibrating screen structure cannot be adjusted, and the vibration of the vibrating screen is completely provided by the vibration motor, resulting in limited effect of the vibrating screen.

[0004] The purpose of the present invention can be achieved by the following technical solutions: The first aspect of the present invention is to provide an adaptive amplitude adjustment structure for a vibrating screen, comprising a supporting base, a vibrating screen body is arranged on the top of which, a pressure sensor is arranged on the vibrating screen body, the sensor collects pressure data of the material on the vibrating screen body in real time, and an adaptive structure is arranged between the supporting base and the vibrating screen body, the adaptive structure is used to provide a buffer for the supporting base and 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 vibration motor is installed on the bottom surface of the vibrating screen body.

[0005] As a further solution of the present invention: the support base includes a base body, the side surfaces of the base body are fixedly connected to a plurality of evenly arranged connecting seats, and the top surface of the base body is provided with an amplitude cylinder, a first cylinder and a second cylinder.

[0006] As a further solution of the present invention: the adaptive structure includes a hydraulic rod sleeve, one end of the hydraulic rod sleeve is slidably connected to the telescopic rod, the other end of the hydraulic rod sleeve is rotatably connected to the 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.

[0007] As a further solution of the present invention: a connecting groove matching with the rotating seat is formed on the top surface of the connecting seat, an adaptive adjustment cavity is formed on the side wall of the connecting groove, two groups of symmetrical output ports are arranged inside the adaptive adjustment cavity, an adaptive sealing slider is fixedly connected to the side of the rotating seat, 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.

[0008] As a further solution of the present invention: the hydraulic rod sleeve is connected to the first adjustment chamber through an oil pipe and an output port.

[0009] As a further solution of the present invention: the vibrating screen body includes a screen seat, the side of the screen seat is fixedly connected to a plurality of evenly arranged mounting seats, the rotating seat on the telescopic rod is movably connected to the bottom of the mounting seat, the top surface of the mounting seat is connected to a connecting rod, and the top of the connecting rod is connected to the screen.

[0010] As a further solution of the present invention: the vibration motor includes a motor body, a motor shaft is inserted into the interior of the motor body, an eccentric wheel is fixedly connected to the outer end of the motor shaft, an adjustment 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 vibration screen body by bolts.

[0011] As a further solution of the present invention: a delivery pipe is fixedly connected to the side of the motor body, one end of the delivery pipe is connected to a connecting hose, the end of the connecting hose away from the delivery pipe is connected to the amplitude cylinder, the other end of the delivery pipe is connected to an inner tube, the end of the inner tube away from the delivery pipe is connected to a sealing ring, and the sealing ring is sealingly and slidingly connected to the inner end of the motor shaft.

[0012] As a further solution of the present invention: a built-in groove runs through the interior of the motor shaft, a conveying groove is opened inside the eccentric wheel, an adjustment groove matching the adjustment block is opened inside the eccentric wheel near the adjustment block, and the built-in groove is connected to the adjustment groove through the conveying groove.

[0013] A second aspect of the present invention is to provide a control method for a vibrating screen adaptive amplitude adjustment structure, comprising the following steps: S1: The pressure sensor collects the pressure data of the material on the vibrating screen in real time; S2: Preset pressure threshold level based on the material to be screened on the vibrating screen body; S3: comparing the collected pressure data of the material on the vibrating screen body with the preset pressure threshold level, and generating a pressure threshold level corresponding to the pressure data; S4: The adaptive structure adaptively adjusts the amplitude data of the vibrating screen body according to the pressure threshold level corresponding to the generated pressure data.

[0014] Beneficial effects of the present invention: 1. In the present invention, the high pressure threshold P is pre-set by setting an adaptive structure. 高 , medium pressure threshold P 中 and the low pressure threshold P 低 , when the pressure data is greater than or equal to P 高 When the pressure data is less than P, it indicates that the pressure data is at the high pressure threshold level. The technicians in this field preset different amplitude data corresponding to different pressure threshold levels, and then adaptively adjust the amplitude data of the vibrating screen body according to the high pressure threshold level of the pressure data of the material on the vibrating screen body. 高 At the same time, it is greater than or equal to P 中 When the pressure data is less than P, it indicates that the pressure data is at the medium pressure threshold level. Then, according to the medium pressure threshold level of the pressure data of the material on the vibrating screen body, the amplitude data of the vibrating screen body is adaptively adjusted. 中 At the same time, it is greater than or equal to P 低 When the pressure data is less than P, it indicates that the pressure data is at the low pressure threshold level. Then, according to the low pressure threshold level of the pressure data of the material on the vibrating screen body, the amplitude data of the vibrating screen body is adaptively adjusted. 低 When it is on, it means that there is too little material on the vibrating screen body. You can turn off the vibration motor to end the screening operation of the vibrating screen body, or it will prompt that you need to continue adding material to the vibrating screen body. The vibrating screen body can give different amplitude data for different amounts of material, reducing the working intensity of the vibrating screen's adaptive amplitude adjustment structure and extending the working time of the vibrating screen's adaptive amplitude adjustment structure.

[0015] 2. In the present invention, since the hydraulic rod sleeve is connected with the first adjusting chamber through the oil pipe and the output port, the oil tank in the first oil cylinder, the first adjusting chamber and the inner chamber of the hydraulic rod sleeve are connected with each other. After the vibration motor is turned on, when the vibration motor causes the vibrating screen body to vibrate, the length between the hydraulic rod sleeve and the telescopic rod will continue to change, and the rotating seat will also rotate freely back and forth in the connecting groove. When the rotating seat rotates, the rotating seat will drive the adaptive sealing slider to rotate synchronously, that is, the adaptive sealing slider will slide in the adaptive adjustment chamber. The oil tank in the first oil cylinder, the first adjustment chamber and the hydraulic rod sleeve are a group of linkage buffers. When the hydraulic oil in the hydraulic rod sleeve enters the first adjustment chamber, the oil pressure of the hydraulic oil in the first adjustment chamber is increased. The increase in the oil pressure of the hydraulic oil in the first adjustment chamber can drive the adaptive sealing slider. Taking the figure as an example, the adaptive sealing slider is made to slide clockwise in the adaptive adjustment chamber, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of the self-adaptive amplitude adjustment structure of the vibrating screen of the present invention; Figure 2 This is a front view of the self-adaptive amplitude adjustment structure of the vibrating screen of the present invention; Figure 3 It is a schematic diagram of the overall structure of the adaptive structure in the present invention; Figure 4 It is a structural schematic diagram of the support base in the present invention; Figure 5 It is a structural schematic diagram of the connecting seat in the present invention; Figure 6 It is a schematic diagram of the local structure of the adaptive structure in the present invention; Figure 7 is a cross-sectional view of the connecting seat in the present invention; Figure 8 It is a structural schematic diagram of the vibrating screen body in the present invention; Fig. 9 It is a schematic diagram of the overall structure of the vibrating screen body in the present invention; Fig.10 It is a structural schematic diagram of the vibration motor in the present invention; Fig.11 is a cross-sectional view of the vibration motor of the present invention; Fig.12 is a cross-sectional view of the eccentric wheel in the present invention; Fig.13 It is a schematic diagram of the internal structure of the first oil cylinder and the second oil cylinder of the present invention.

[0018] Reference numerals: 1. support base; 11. base body; 12. connection seat; 121. connection groove; 122. adaptive adjustment chamber; 122a. first adjustment chamber; 122b. second adjustment chamber; 123. output port; 13. amplitude cylinder; 14. first cylinder; 15. second cylinder; 161. cylinder shell; 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. Rotating seat; 24. Adaptive sealing slider; 3. Vibrating screen body; 31. Screen seat; 32. Mounting seat; 33. Connecting rod; 34. Screen; 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 DESCRIPTION

[0019] 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.

[0020] Example 1

[0021] like Figure 1-Figure 12 As shown, the present invention discloses an adaptive amplitude adjustment structure of a vibrating screen, including a supporting base 1, a vibrating screen body 3 is arranged on the top of which, a pressure sensor is arranged on the vibrating screen body 3, and the sensor collects 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 applied by the material put into the vibrating screen body 3 to the pressure sensor. The technicians in this field pre-set different pressure thresholds, and an adaptive structure 2 is arranged between the supporting base 1 and the vibrating screen body 3. The adaptive structure 2 is used to provide a buffer for the supporting 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, it is based on different pressure thresholds, and 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.

[0022] It should be noted that, firstly, the material to be screened is put into the vibrating screen body 3, and then the vibrating motor 4 is turned on, and the pressure sensor on the vibrating screen body 3 can collect the pressure data exerted by the material put into the vibrating screen body 3 on the pressure sensor. The technicians in this field 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 the low pressure threshold P 低 , when the pressure data is greater than or equal to P 高 When the pressure data is less than P, it indicates that the pressure data is at the high pressure threshold level. The technicians in this field preset different amplitude data corresponding to different pressure threshold levels, and then adaptively adjust the amplitude data of the vibrating screen body 3 according to the high pressure threshold level of the pressure data of the material on the vibrating screen body 3. 高 At the same time, it is greater than or equal to P 中 When the pressure data is less than P, it indicates that the pressure data is at the medium pressure threshold level. Then, according to 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. 中 At the same time, it is greater than or equal to P 低 When the pressure data is less than P, it indicates that the pressure data is at the low pressure threshold level. Then, according to 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. 低 , it indicates that there is too little material on the vibrating screen body 3 , and the vibrating motor 4 can be turned off to end the screening operation of the vibrating screen body 3 , or it is prompted that material needs to be added to the vibrating screen body 3 .

[0023] By setting the adaptive structure 2, the vibrating screen body 3 can provide different amplitude data for different amounts of materials, thereby reducing the working intensity of the vibrating screen adaptive amplitude adjustment structure and extending the working time of the vibrating screen adaptive amplitude adjustment structure.

[0024] like Figure 4 As shown, the support base 1 includes a base body 11, and the side of the base body 11 is fixedly connected to a plurality of evenly arranged connection seats 12, so as to Figure 4 For example, six groups 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 adaptively selected by technical personnel in this field according to the working intensity of the adaptive amplitude adjustment structure of the vibrating screen.

[0025] like Figure 3-Figure 7As shown, the adaptive structure 2 includes a hydraulic rod sleeve 21, one end of the hydraulic rod sleeve 21 is slidably connected to the telescopic rod 22, the other end of the hydraulic rod sleeve 21 is rotatably connected to the 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, and 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 seat 23 is connected to both the hydraulic rod sleeve 21 and the telescopic rod 22, and 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, and 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 tilted as a whole.

[0026] like Figure 3-Figure 7 As shown, a connecting groove 121 which matches with the rotating seat 23 is provided on the top surface of the connecting seat 12, and an adaptive adjustment cavity 122 is provided on the side wall of the connecting groove 121. The rotating seat 23 can rotate freely in the connecting groove 121, and two groups of symmetrical output ports 123 are arranged inside the adaptive adjustment cavity 122. An adaptive sealing slider 24 is fixedly connected to the side of the rotating seat 23, and the adaptive sealing slider 24 and the adaptive adjustment cavity 122 match with each other. 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.

[0027] It should be noted that after turning on the vibration motor 4, the vibration motor 4 will cause the vibration screen body 3 to vibrate. When the vibration screen body 3 vibrates, the length between the hydraulic rod sleeve 21 and the telescopic rod 22 will continue to change, and 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 chamber 122, thereby controlling the size of the first adjustment chamber 122a and the second adjustment chamber 122b. Since the first oil cylinder 14 is connected to the first adjustment chamber 122a through an oil pipe, and the second oil cylinder 15 is connected to the second adjustment chamber 122b through an oil pipe, when the size of the first adjustment chamber 122a and the second adjustment chamber 122b changes, the hydraulic oil in the first adjustment chamber 122a and the second adjustment chamber 122b also changes in flow at the same time.

[0028] like Fig.13 As shown, the first oil cylinder 14 and the second oil cylinder 15 both include a cylinder shell 161, the top of the inner cavity of the cylinder shell 161 is fixedly connected to the hydraulic cylinder 162 by bolts, the bottom of the hydraulic cylinder 162 is fixedly connected to the push plate 163 by a hydraulic rod, the bottom surface of the push plate 163 is fixedly connected to the compression spring 164, the bottom end of the compression spring 164 is fixedly connected to the piston 166, the outside of the piston 166 is nested with an oil tank 165, the interior of the oil tank 165 is filled with hydraulic oil, and the oil tanks 165 in the first oil cylinder 14 and the second oil cylinder 15 are connected to the first adjustment chamber 122a and the second adjustment chamber 122b through oil pipes respectively.

[0029] Since the hydraulic rod sleeve 21 is connected with the first adjusting chamber 122a through the oil pipe and the output port 123, the oil tank 165 in the first oil cylinder 14, the first adjusting chamber 122a and the inner chamber of the hydraulic rod sleeve 21 are connected with each other. After the vibration motor 4 is turned on, when the vibration motor 4 causes the vibration screen body 3 to vibrate, the length between the hydraulic rod sleeve 21 and the telescopic rod 22 will continue to change, and the rotating seat 23 will also freely reciprocate 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 adjusting chamber 122. The oil tank 165 in the first oil cylinder 14, the first adjusting chamber 122a and the hydraulic rod sleeve 21 form a group of linkage buffers. When the hydraulic oil in the hydraulic rod sleeve 21 enters the first adjusting chamber 122a, the oil pressure of the hydraulic oil in the first adjusting chamber 122a is increased. The increased oil pressure of the hydraulic oil in the first adjusting chamber 122a can drive the adaptive sealing slider 24 to Figure 7 For example, the adaptive sealing slider 24 slides clockwise in the adaptive adjustment chamber 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 .

[0030] When the adaptive sealing slider 24 slides counterclockwise in the adaptive adjusting chamber 122, the adaptive sealing slider 24 will increase the volume of the first adjusting chamber 122a, receive the hydraulic oil delivered by the hydraulic rod sleeve 21, and reduce the volume of the second adjusting chamber 122b at the same time. The oil pressure of the hydraulic oil in the second adjusting chamber 122b will inevitably increase, so that the hydraulic oil will enter the oil tank 165 corresponding to the second oil cylinder 15, compressing the compression spring 164 corresponding to the oil tank 165, so that the elastic force of the compression spring 164 is increased, so that the compression spring 164 can react on the corresponding active The piston 166 is on the plug 166, so that the piston 166 can squeeze the hydraulic oil in the oil tank 165 corresponding to the second oil cylinder 15, so that the hydraulic oil enters the second adjusting chamber 122b, so that the hydraulic oil in the second adjusting chamber 122b will react on the adaptive sealing slider 24, so that the adaptive sealing slider 24 rotates counterclockwise, and the counterclockwise rotating adaptive sealing slider 24 will squeeze the hydraulic oil in the first adjusting chamber 122a, so that the hydraulic oil in the first adjusting chamber 122a enters the inner cavity of the hydraulic rod sleeve 21, pushes the telescopic rod 22, and allows the vibrating screen body 3 to continuously reciprocate.

[0031] It should also be noted that the hydraulic cylinder 162 can be opened, and the hydraulic cylinder 162 will drive 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, the elastic force of the compression spring 164 will inevitably increase, so that the sliding distance of the adaptive sealing slider 24 in the adaptive adjustment chamber 122 will be shortened, that is, the vibration amplitude of the vibrating screen body 3, that is, the amplitude data, is reduced. Conversely, when the push plate 163 pulls the compression spring 164, the elastic force of the compression spring 164 will inevitably be reduced, so that the sliding distance of the adaptive sealing slider 24 in the adaptive adjustment chamber 122 will increase, that is, the vibration amplitude of the vibrating screen body 3, that is, the amplitude data, is increased. Therefore, technical personnel in this field use a computer to generate a functional relationship of the sliding distance change of the adaptive sealing slider 24 in the adaptive adjustment chamber 122 according to the change in the elastic force of the compression spring 164, so as to adaptively adjust the amplitude data of the vibrating screen body 3.

[0032] Example 2

[0033] like Figure 1 , Figure 8 and Fig. 9As shown, the vibrating screen body 3 includes a sieve seat 31, and a plurality of evenly arranged mounting seats 32 are fixedly connected to the side of the sieve seat 31, the rotating seat 23 on the telescopic rod 22 is movably connected to the bottom of the mounting seat 32, the top surface of the mounting seat 32 is connected to a connecting rod 33, and the top of the connecting rod 33 is connected to a sieve 34. It should be noted that the number of the mounting seats 32 on the side of the sieve seat 31 is the same as that of the connecting seats 12, but when the adaptive structure 2 is connected to the connecting seat 12 on the base body 11 and the mounting seat 32 on the sieve seat 31, the mounting seat 32 and the connecting seat 12 should be staggered with each other, so that the hydraulic rod sleeve 21 and the telescopic rod 22 are arranged as a whole in an inclined manner, the top of the sieve seat 31 is connected to the sieve 34 through the connecting rod 33, and the top of the sieve 34 can also be connected to another sieve 34 through another set of connecting rods 33. The number of sieves 34 on the top of the sieve seat 31 and the mesh specifications of the sieves 34 are adaptively selected by those skilled in the art according to the type of material to be screened.

[0034] Example 3

[0035] like Figure 1 , Fig.10 , Fig.11 and Fig.12 As shown, the vibration motor 4 includes a motor body 41, a motor shaft 48 is inserted into the interior of the motor body 41, an outer end of the motor shaft 48 is fixedly connected to an eccentric wheel 42, and the bottom surface of the eccentric wheel 42 is slidably connected to an adjustment block 43. The motor body 41 is fixed to the center position of the bottom surface of the vibration 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, so that the eccentric wheel 42 rotates at high speed. The high-speed rotating eccentric wheel 42 can make the motor body 41 produce a vibration effect, and the vibration will be transmitted to the vibration screen body 3, causing the vibration screen body 3 to vibrate.

[0036] like Figure 1 , Fig.10 , Fig.11 and Fig.12 As shown, a delivery pipe 44 is fixedly connected to the side of the motor body 41, and a connecting hose 45 is connected to one end of the delivery pipe 44. The end of the connecting hose 45 away from the delivery pipe 44 is connected to the amplitude cylinder 13, and the amplitude cylinder 13 can inject or suck the hydraulic oil in the delivery pipe 44 through the connecting hose 45. The other end of the delivery pipe 44 is connected to an inner tube 46, and the end of the inner tube 46 away from the delivery pipe 44 is connected to a sealing ring 47. The sealing ring 47 is sealingly and slidably connected to the inner end of the motor shaft 48 without affecting the high-speed rotation of the motor shaft 48. A built-in groove 49 runs through the inside of the motor shaft 48, a delivery groove 421 is opened in the eccentric wheel 42, and an adjustment groove 422 that matches the adjustment block 43 is opened in the eccentric wheel 42 near the adjustment block 43, and the built-in groove 49 is connected to the adjustment groove 422 through the delivery groove 421.

[0037] 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 to allow the amplitude cylinder 13 to suck the hydraulic oil in the delivery pipe 44 through the connecting hose 45. Since the other end of the delivery pipe 44 is connected to the built-in pipe 46, the end of the built-in pipe 46 away from the delivery pipe 44 is connected to the sealing ring 47, the sealing ring 47 is sealed and slidably connected to the inner end of the motor shaft 48, and the built-in groove 49 is connected to the adjustment groove 422 through the delivery groove 421, so the delivery pipe 44 can suck the hydraulic oil in the adjustment groove 422, so that the adjustment block 43 moves toward the inner end of the adjustment groove 422. When the adjustment block 43 moves toward the inner end of the adjustment groove 422, the distance between the center of gravity and the center of the circle of the eccentric wheel 42 will be increased, thereby improving the vibration effect generated by the eccentric wheel 42.

[0038] When it is necessary to reduce the vibration effect of the vibrating screen body 3, the amplitude cylinder 13 can be opened to inject hydraulic oil into the delivery pipe 44 through the connecting hose 45. Since the other end of the delivery pipe 44 is connected to the built-in pipe 46, the end of the built-in pipe 46 away from the delivery pipe 44 is connected to the sealing ring 47, the sealing ring 47 is sealed and slidably connected to the inner end of the motor shaft 48, and the built-in groove 49 is connected to the adjustment groove 422 through the delivery groove 421, so the delivery pipe 44 can inject hydraulic oil into the adjustment groove 422, so that the adjustment block 43 moves toward the outer end of the adjustment groove 422. When the adjustment block 43 moves toward the outer end of the adjustment groove 422, the distance between the center of gravity and the center of the circle of the eccentric wheel 42 will be reduced, thereby reducing the vibration effect generated by the eccentric wheel 42.

[0039] Example 4

[0040] like Figure 1-Figure 13 As shown, the present invention discloses a control method for a vibrating screen adaptive amplitude adjustment structure, comprising the following steps: S1: The pressure sensor collects the pressure data of the material on the vibrating screen body 3 in real time; It should be noted that the specifications and types of the pressure sensors are adaptively selected by technical personnel in this field according to the specifications of the screen 34, and the installation quantity and positions of the pressure sensors are adaptively adjusted by technical personnel in this field according to the shape of the screen 34 to ensure that the pressure sensors 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 sensors can also be divided into multiple groups, and multiple pressure sensors are arranged on each screen 34.

[0041] S2: Presetting a pressure threshold level based on the material to be screened on the vibrating screen body 3; It should be noted that those skilled in the art can pre-set different pressure thresholds. For example, the pressure threshold can be divided into three levels, namely, the high pressure threshold P 高 , medium pressure threshold P中 and the low pressure threshold P 低 .

[0042] S3: Compare the collected pressure data of the material on the vibrating screen body 3 with the preset pressure threshold level, and generate a pressure threshold level corresponding to the pressure data; It should be noted that when the pressure data is greater than or equal to P 高 When the pressure data is less than P, it indicates that the pressure data is at the high pressure threshold level. The technicians in this field preset different amplitude data corresponding to different pressure threshold levels, and then adaptively adjust the amplitude data of the vibrating screen body 3 according to the high pressure threshold level of the pressure data of the material on the vibrating screen body 3. 高 At the same time, it is greater than or equal to P 中 When the pressure data is less than P, it indicates that the pressure data is at the medium pressure threshold level. Then, according to 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. 中 At the same time, it is greater than or equal to P 低 When the pressure data is less than P, it indicates that the pressure data is at the low pressure threshold level. Then, according to 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. 低 , it indicates that there is too little material on the vibrating screen body 3 , and the vibrating motor 4 can be turned off to end the screening operation of the vibrating screen body 3 , or a prompt is given to continue adding material to the vibrating screen body 3 .

[0043] S4: According to 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 .

[0044] It should be noted that, the technicians in this field realize the adaptive structure 2 to adaptively adjust the amplitude data of the vibrating screen body 3 according to the hydraulic cylinder 162 in the first oil cylinder 14 and the second oil cylinder 15. Specifically, the hydraulic cylinder 162 is opened, and the hydraulic cylinder 162 will drive 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, the elastic force of the compression spring 164 will inevitably increase, so that the sliding distance of the adaptive sealing slider 24 in the adaptive adjustment cavity 122 will be shortened, that is, the vibration amplitude of the vibrating screen body 3 is reduced, that is, the amplitude data. On the contrary, when the push plate 163 pulls the compression spring 164, the elastic force of the compression spring 164 will inevitably be reduced, so that the sliding distance of the adaptive sealing slider 24 in the adaptive adjustment cavity 122 will increase, that is, the vibration amplitude of the vibrating screen body 3 is increased, that is, the amplitude data. Therefore, the technicians in this field use a computer to generate a functional relationship of the sliding distance change of the adaptive sealing slider 24 in the adaptive adjustment cavity 122 according to the change of the elastic force of the compression spring 164, so as to adaptively adjust the amplitude data of the vibrating screen body 3.

[0045] 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. The vibrating screen adaptive amplitude adjustment structure is characterized by: include: A support base (1) is provided with a vibrating screen body (3) on the top thereof, the support base (1) comprising a base body (11), the side surface of the base body (11) being fixedly connected to a plurality of evenly arranged connecting seats (12), and the top surface of the base body (11) being provided with an amplitude cylinder (13), a first cylinder (14) and a second cylinder (15); An adaptive structure (2) is arranged between the support base (1) and the vibrating screen body (3), the adaptive structure (2) comprising a hydraulic rod sleeve (21), one end of the hydraulic rod sleeve (21) being slidably connected to a telescopic rod (22), the other end of the hydraulic rod sleeve (21) being rotatably connected to a rotating seat (23), one end of the telescopic rod (22) away from the hydraulic rod sleeve (21) being rotatably connected to the rotating seat (23), and the rotating seat (23) on the hydraulic rod sleeve (21) being movably connected to the top of the connecting seat (12); A vibration motor (4) mounted on the bottom surface of the vibration screen body (3); The top surface of the connecting seat (12) is provided with a connecting groove (121) that matches with the rotating seat (23); the side wall of the connecting groove (121) is provided with an adaptive adjustment cavity (122); two groups of symmetrical output ports (123) are arranged inside the adaptive adjustment cavity (122); an adaptive sealing slider (24) is fixedly connected to the side of the rotating seat (23); 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 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.

2. The vibrating screen adaptive amplitude adjustment structure according to claim 1, characterized in that: The vibrating screen body (3) is provided with a pressure sensor, and the sensor collects pressure data of the material on the vibrating screen body (3) in real time.

3. The vibrating screen adaptive amplitude adjustment structure according to claim 2, characterized in that: The adaptive structure (2) is used to provide a buffer for the supporting base (1) and to 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).

4. The vibrating screen adaptive amplitude adjustment structure according to claim 1, characterized in that: The hydraulic rod sleeve (21) is in communication with the first adjustment chamber (122a) via an oil pipe and an output port (123).

5. The vibrating screen adaptive amplitude adjustment structure according to claim 1, characterized in that: The vibrating screen body (3) comprises a screen seat (31), a side of the screen seat (31) is fixedly connected to a plurality of evenly arranged mounting seats (32), a 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).

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

7. The vibrating screen adaptive amplitude adjustment structure according to claim 6, characterized in that: A delivery pipe (44) is fixedly connected to the side of the motor body (41); one end of the delivery pipe (44) is connected to a connecting hose (45); one end of the connecting hose (45) away from the delivery pipe (44) is connected to the amplitude cylinder (13); the other end of the delivery pipe (44) is connected to an internal pipe (46); one end of the internal pipe (46) away from the delivery pipe (44) is connected to a sealing ring (47); the sealing ring (47) is sealingly and slidably connected to one end of the inner side of the motor shaft (48).

8. The vibrating screen adaptive amplitude adjustment structure according to claim 7, characterized in that: The motor shaft (48) has a built-in groove (49) extending therethrough, the eccentric wheel (42) has a conveying groove (421) formed therein, the eccentric wheel (42) has an adjustment groove (422) fitted with the adjustment block (43) formed therein, and the built-in groove (49) is connected to the adjustment groove (422) via the conveying groove (421).

9. A control method for the vibrating screen adaptive amplitude adjustment structure according to claim 3, characterized in that: The following steps are involved: S1: The pressure sensor collects the pressure data of the material on the vibrating screen body (3) in real time; S2: a preset pressure threshold level based on the material to be screened on the vibrating screen body (3); S3: comparing the collected pressure data of the material on the vibrating screen body (3) with a preset pressure threshold level, and generating a pressure threshold level corresponding to the pressure data; S4: According to 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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