Amplitude detection device for vibrating screen and detection method thereof

Abstract

The invention relates to the technical field of amplitude detection, and provides an amplitude detection device for a vibrating screen and a detection method thereof.In the amplitude detection device, a mounting block is slidably arranged on a base in the vertical direction, a supporting plate can transversely slide on the mounting block, and a detection assembly is slidably arranged on the supporting plate in the vertical direction; the bottom of the detection assembly abuts against the vibrating screen mesh, and the displacement sensor can sense the moving distance of the detection assembly under the vibration effect of the vibrating screen, convert the moving distance into an electric signal and output the electric signal to the computer so as to detect the amplitude of the vibrating screen mesh. In the whole detection process, the position of the base is always kept unchanged, and the supporting plate slides on the mounting block along the fixed transverse direction, so that a plurality of detection points can be ensured to be positioned in the same direction, and the reference consistency of detection data is ensured. The technical problem that the amplitude data of a plurality of position points in the same direction are difficult to detect by amplitude detection equipment in the prior art is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of amplitude detection, and in particular, to an amplitude detection device and a detection method thereof for a vibrating screen. Background Art

[0002] Monitoring equipment operating status and diagnosing faults are crucial in the development of modern industry. In-depth analysis of equipment vibration parameters not only helps us understand the equipment's dynamic characteristics but also assesses its operational status, identifying potential faults in a timely manner and enabling predictive maintenance.

[0003] The operating principle of a vibrating screen is to separate materials of varying particle sizes by sieving them on the screen surface through vibration. The vibration state of the vibrating screen during operation directly affects the screening effect and the equipment's service life. Amplitude is a key parameter in monitoring vibrating screen operation. In practice, acquiring amplitude data from a single point on a vibrating screen is insufficient for understanding its operating status. This is because the screen surface is large, and vibration conditions may vary at different locations. Amplitude data from a single location alone cannot accurately reflect the vibration characteristics of the entire screen surface.

[0004] Traditional vibration screen amplitude detection equipment mostly focuses on single-point measurement. The amplitude data of a single position has low reference value. If you want to detect multiple points, it is difficult to manually ensure that multiple detection points are in the same direction. If the multiple detection points are not in the same direction, it is easy to affect the consistency of the reference datum.

[0005] Therefore, developing an amplitude detection device and a detection method thereof that can obtain amplitude data of different position points in the same direction of the vibrating screen is of great significance for improving the operating efficiency of the vibrating screen and ensuring the stable operation of the equipment. Summary of the Invention

[0006] To overcome the above-mentioned defects, an embodiment of the present invention provides an amplitude detection device and a detection method for a vibrating screen, which solves the technical problem in related arts that amplitude detection equipment has difficulty in detecting amplitude data of multiple points in the same direction.

[0007] According to one aspect, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, comprising a base, a mounting block, a support plate, a detection assembly, a spring and a displacement sensor, wherein the mounting block is arranged on the base along a vertical sliding direction, the support plate can slide laterally on the mounting block, the detection assembly is arranged on the support plate along a vertical sliding direction, the bottom of the detection assembly is used to abut the vibrating screen mesh, the two ends of the spring act on the support plate and the detection assembly respectively, and are used to provide a force for the detection assembly to abut the vibrating screen mesh, the displacement sensor is arranged on the support plate and contacts the top of the detection assembly, the displacement sensor can sense the distance moved by the detection assembly under the vibration of the vibrating screen, and convert it into an electrical signal and output it to a computer to detect the amplitude of the vibrating screen mesh.

[0008] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: The mounting block is provided with a sliding groove, the support plate is located in the sliding groove, and can slide in the sliding groove in a horizontal direction or a vertical direction.

[0009] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: A transverse slide is slidably provided on the lateral side of the support plate, and a longitudinal screw rod arranged in the longitudinal direction and threadedly connected to the transverse slide rod is rotatably provided on the mounting block, and the longitudinal screw rod can drive the support plate to slide longitudinally in the sliding groove with the help of the transverse slide rod; A longitudinal slide is slidably provided on the longitudinal edge of the support plate, and a transverse screw rod is rotatably provided on the mounting block and is arranged transversely and threadedly connected to the longitudinal slide rod. The transverse screw rod can drive the support plate to slide transversely in the sliding groove with the help of the longitudinal slide rod.

[0010] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: The detection assembly includes an upper limit plate, a lower limit plate, a guide rod and a detection rod. There are two guide rods, and both ends are connected to the upper limit plate and the lower limit plate in a one-to-one manner. The guide rod is slidably arranged on the support plate. The detection rod is arranged at the bottom of the lower limit plate. The bottom of the detection rod has a hard rubber ring, and the hard rubber ring is used to abut the vibrating screen. The top surface of the upper limit plate contacts the displacement sensor. The spring is sleeved on the guide rod, and its two ends abut the support plate and the lower limit plate respectively, for providing force for the detection rod to abut the vibrating screen mesh.

[0011] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: The support plate is provided with a bracket, the displacement sensor is detachably mounted on the top of the bracket, and the bracket has a socket with the same cross-sectional shape as the support plate for inserting the support plate.

[0012] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: A support rod is swingably provided on the base, and there are at least two support rods. A roller is rotatably provided at the end of each support rod. The multiple support rods can be swung until the multiple rollers abut against the side wall of the vibrating screen, so that the length direction of the sliding groove on the mounting block is parallel to the vibrating screen.

[0013] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: The support plate is provided with transverse scale lines, the mounting block is provided with longitudinal scale lines along the length direction of the sliding groove, and the guide rod is provided with height scale lines.

[0014] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: Guide sleeves having the same cross-sectional shape as the support plate are provided on both side surfaces of the mounting block for sliding along the length direction of the sliding groove, and the support plate is located in the guide sleeves.

[0015] For example, at least one embodiment of the present invention provides an amplitude detection device for a vibrating screen, further comprising: Universal wheels are installed on the base.

[0016] For example, in at least one embodiment of the present invention, a vibration amplitude detection method for a vibrating screen is provided: The amplitude detection device for a vibrating screen is used, and the following steps are included: S1: Move the base to the vibrating screen to be tested, adjust the height of the mounting block and the horizontal position of the support plate, so that the hard rubber ring at the bottom of the detection rod contacts the screen of the vibrating screen; S2: Start the vibrating screen, and the vibration of the screen is transmitted to the displacement sensor with the help of the detection component; S3: The displacement sensor senses the distance moved by the detection component under the vibration of the vibrating screen and converts it into an electrical signal and outputs it to the computer; S4: Record and analyze the electrical signal output by the displacement sensor to obtain the amplitude data of the vibrating screen; S5: The support plate slides horizontally, causing the hard rubber ring at the bottom of the detection rod to change its horizontal position in contact with the screen; S6: Repeat steps S2 to S5 to perform amplitude detection at multiple lateral positions of the vibrating screen.

[0017] The beneficial effects of the embodiments of the present invention are: In the present invention, before performing amplitude detection, the vertical position of the mounting block on the base is first adjusted according to the installation height of the vibrating screen, and then the lateral position of the support plate on the mounting block is adjusted according to the lateral position of the screen to be detected, so that the detection component is moved to the detection point of the vibrating screen and contacts the screen.

[0018] When the vibrating screen is turned on, the vibrations of the screen mesh are transmitted to the detection assembly in contact with it. Driven by the vibrations of the screen mesh, the detection assembly moves up and down along the vertical guide structure on the support plate. A displacement sensor detects changes in the top position of the detection assembly in real time—that is, the distance the detection assembly moves under the influence of the vibrating screen's vibrations—and converts this displacement into an electrical signal. This electrical signal is transmitted via a data transmission line to a computer, which processes and analyzes it to determine the vibration amplitude of the vibrating screen mesh at that detection point.

[0019] After completing the amplitude test at one point, the operator can adjust the lateral position of the support plate to move the test assembly to another position across the vibrating screen mesh. Repeating the above test process can obtain amplitude data at different lateral positions of the screen mesh. Since the position of the base remains unchanged throughout the entire test process, and the support plate slides along a fixed lateral direction on the mounting block, it is possible to ensure that multiple test points are located in the same direction, ensuring the consistency of the reference base of the test data, making the amplitude data obtained at different positions more valuable for analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0021] Figure 1 This is a schematic structural diagram of an amplitude detection device applied to a vibrating screen in one embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 A schematic structural diagram of another angle when the amplitude detection device in the embodiment is applied to a vibrating screen; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 for Figure 1A schematic structural diagram of an amplitude detection device for a vibrating screen in an embodiment; Figure 6 for Figure 1 Schematic diagram of the structural explosion of the amplitude detection device in the embodiment.

[0022] In the figure: 1. base, 2. mounting block, 3. support plate, 4. detection assembly, 5. spring, 6. displacement sensor, 201. sliding groove, 301. transverse slide, 302. longitudinal screw rod, 303. longitudinal slide, 304. transverse screw rod, 401. upper limit plate, 402. lower limit plate, 403. guide rod, 404. detection rod, 405. hard rubber ring, 7. bracket, 701. jack, 8. support rod, 9. roller, 10. transverse scale line, 11. longitudinal scale line, 12. height scale line, 13. guide sleeve, 14. universal wheel. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0024] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0025] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] like Figures 1 to 6 As shown, it shows an amplitude detection device for a vibrating screen in one embodiment of the present invention, including a base 1, a mounting block 2, a support plate 3, a detection component 4, a spring 5 and a displacement sensor 6. The base 1 serves as the basic support structure of the entire amplitude detection device, and the mounting block 2 is vertically slidably arranged on the base 1, thereby adjusting the distance between the detection component 4 and the vibrating screen mesh to adapt to vibrating screens of different models and different installation heights. The support plate 3 is slidably arranged on the mounting block 2 in the horizontal direction, which facilitates the adjustment of the detection component 4 to different horizontal positions of the vibrating screen mesh. The detection component 4 is slidably arranged on the support plate 3 in the vertical direction, and the bottom of the detection component 4 is in contact with the vibrating screen mesh. The two ends of the spring 5 are respectively connected to the support plate 3 and the detection component 4. The function of the spring 5 is to provide a continuous downward force for the detection component 4 so that it can always abut the vibrating screen mesh and avoid the detection component 4 from getting stuck during the vertical sliding process. The displacement sensor 6 is installed on the support plate 3, and the probe at its bottom is in contact with the top of the detection component 4. The displacement sensor 6 is connected to the computer via a data transmission line to ensure that the converted electrical signal can be transmitted to the computer for subsequent analysis and processing.

[0030] Working principle: Before performing amplitude detection, first adjust the vertical position of the mounting block 2 on the base 1 according to the installation height of the vibrating screen, and then adjust the lateral position of the support plate 3 on the mounting block 2 according to the lateral position of the screen to be detected, so that the detection component 4 moves to the detection point of the vibrating screen and contacts the screen.

[0031] When the vibrating screen is turned on, the vibrations of the screen mesh are transmitted to the detection assembly 4 in contact with it. Driven by the vibrations of the screen mesh, the detection assembly 4 moves up and down along the vertical guide structure on the support plate 3. A displacement sensor 6 senses the change in the top position of the detection assembly 4 in real time—that is, the distance the detection assembly 4 moves under the influence of the vibrating screen vibrations—and converts this displacement change into an electrical signal. This electrical signal is transmitted via a data transmission line to a computer, which processes and analyzes the signal to determine the vibration amplitude data of the vibrating screen mesh at that detection point.

[0032] After completing the amplitude test at one point, the operator can adjust the lateral position of the support plate 3 to move the detection assembly 4 to another position lateral to the vibrating screen mesh. Repeating the above detection process can obtain amplitude data at different lateral positions of the screen mesh. Since the position of the base 1 remains unchanged throughout the entire detection process, and the support plate 3 slides along a fixed lateral direction on the mounting block 2, it is possible to ensure that multiple detection points are located in the same direction, ensuring the consistency of the reference base of the detection data, making the amplitude data obtained at different positions more valuable for analysis.

[0033] In some examples, such as Figure 2 、 4 As shown in Figures 6 and 7, the sliding groove 201 provided on the mounting block 2 provides a track and space for the movement of the support plate 3. A transverse slide 301 is slidingly provided on the lateral side of the support plate 3, and a longitudinal screw rod 302 arranged in the longitudinal direction is rotatably provided on the mounting block 2, and the longitudinal screw rod 302 is threadedly connected to the transverse slide 301. When the longitudinal screw rod 302 rotates, since the transverse slide 301 is connected to the support plate 3, it drives the support plate 3 to slide longitudinally in the sliding groove 201. Similarly, a longitudinal slide 303 is slidingly provided on the longitudinal side of the support plate 3, and a transverse screw rod 304 arranged in the transverse direction is rotatably provided on the mounting block 2, and the transverse screw rod 304 is threadedly connected to the longitudinal slide 303. When the transverse screw rod 304 rotates, the longitudinal slide 303 moves in the transverse direction under the drive of the transverse screw rod 304, thereby driving the support plate 3 to slide in the transverse direction in the sliding groove 201. Guide sleeves 13 are provided on both sides of the mounting block 2 for sliding along the length direction of the sliding groove 201 . The cross-sectional shape of the guide sleeves 13 is the same as that of the support plate 3 to ensure that the guide sleeves 13 can constrain the support plate 3 during its entire movement process.

[0034] Working Principle: Detection assembly 4 can select different locations along the vibrating screen's lateral and longitudinal directions for amplitude detection. To detect the amplitude at multiple lateral locations, the transverse screw 304 is rotated, driving the support plate 3 in the lateral direction via the longitudinal slide 303. To detect the amplitude at multiple longitudinal locations, the longitudinal screw 302 is rotated, driving the support plate 3 in the longitudinal direction via the transverse slide 301. This enables more comprehensive amplitude detection of the vibrating screen, acquiring amplitude data at more locations and providing richer information for analyzing the vibrating screen's operating status.

[0035] The function of the guide sleeve 13 is to ensure that the support plate 3 always remains perpendicular to the mounting block 2 during lateral or longitudinal movement, preventing angular deviation. When the support plate 3 moves longitudinally under the drive of the longitudinal screw 302, the guide sleeve 13 moves with the support plate 3, constraining the direction of movement of the support plate 3. Because the cross-sectional shape of the guide sleeve 13 is identical to and compatible with the support plate 3, it effectively prevents the support plate 3 from tilting or twisting during lateral movement, ensuring the positional accuracy of the detection component 4 when detecting at different positions, making the acquired amplitude data more reliable.

[0036] In some examples, such as Figure 6 As shown, the detection assembly 4 includes an upper limit plate 401, a lower limit plate 402, a guide rod 403 and a detection rod 404. The upper limit plate 401 is located at the top of the detection assembly 4, and its top surface is in contact with the displacement sensor 6, so that the vertical displacement of the detection assembly 4 can be transmitted to the displacement sensor 6. The lower limit plate 402 is located at the bottom of the detection assembly 4 and is used to connect the detection rod 404. The guide rod 403 is set to two, and its two ends are respectively connected to the upper limit plate 401 and the lower limit plate 402 in a one-to-one correspondence to form a frame structure. The guide rod 403 runs through the support plate 3 and slides with it to provide guidance for the vertical movement of the detection assembly 4. The detection rod 404 is installed at the bottom of the lower limit plate 402, and a hard rubber ring 405 is provided at the bottom of the detection rod 404. The hard rubber ring 405 directly contacts the vibrating screen mesh. When the mesh amplitude is too large and causes excessive impact on the detection rod 404, the hard rubber ring 405 can play a certain buffering role to avoid damage to the detection rod 404. Spring 5 is mounted on guide rod 403, with its ends respectively contacting support plate 3 and lower limit plate 402. The main function of spring 5 is to provide a continuous contact force for detection rod 404, ensuring that detection rod 404 always maintains contact with the screen. On the other hand, its own elastic buffer reduces the impact of vibration on detection assembly 4, thereby improving the stability and reliability of detection assembly 4.

[0037] Working principle: When the vibrating screen mesh vibrates, the detection rod 404 is subjected to the vibration transmission, driving the lower limit plate 402, the guide rod 403 and the upper limit plate 401 to move in the vertical direction. Since the guide rod 403 can only slide vertically in the guide hole of the support plate 3, the detection component 4 can accurately follow the vertical vibration of the screen mesh to move, ensuring the authenticity of the displacement data detected by the displacement sensor 6. When the amplitude of the screen mesh is too large and may cause excessive impact, because the hard rubber ring 405 first contacts the screen mesh, it can absorb part of the vibration energy, reduce the direct impact force of the detection rod 404 on the screen mesh, and protect the screen mesh from being damaged. At the same time, the elasticity of the hard rubber ring 405 also enables the detection rod 404 to better fit the surface of the screen mesh, ensuring that the vibration can be effectively transmitted to the detection component 4.

[0038] In some examples, such as Figure 6 As shown, bracket 7 is mounted on support plate 3 to provide a mounting base for displacement sensor 6. Bracket 7 is provided with a socket 701 having the same cross-sectional shape as support plate 3, ensuring that support plate 3 can be snugly inserted therein, forming a tightly nested structure and ensuring a stable connection between bracket 7 and support plate 3. Displacement sensor 6 is detachably mounted on top of bracket 7 via bolts, facilitating maintenance and replacement.

[0039] In some examples, such as Figure 5 As shown, at least two support rods 8 are provided on the base 1, and the support rods 8 are connected to the base 1 in a hinged manner. A roller 9 is rotatably provided at the end of each support rod 8. When all the support rods 8 are swung until the rollers 9 are in contact with the side walls of the vibrating screen, the length direction of the sliding groove 201 on the mounting block 2 can be made parallel to the vibrating screen. When the support plate 3 moves longitudinally in the sliding groove 201, its movement direction can be accurately along the longitudinal direction of the vibrating screen, thereby ensuring that multiple detection points are located on the longitudinal straight line and obtaining accurate amplitude data at different positions.

[0040] The support plate 3 is provided with transverse scale lines 10, which are distributed along the transverse direction of the support plate 3. The mounting block 2 is provided with longitudinal scale lines 11 along the length of the sliding groove 201 to help determine the longitudinal movement distance of the support plate 3. The guide rod 403 is provided with height scale lines 12, which are distributed along the length of the guide rod 403. Since the vibrating screen mesh typically has a certain slope, regular inspection and measurement of the mesh slope are required to ensure the normal flow rate of material on the mesh. In this solution, after the detection rod 404 moves longitudinally, the operator can determine the horizontal distance between the two points before and after the movement based on the longitudinal scale lines 11. Simultaneously, the height difference between the two points can be calculated based on the values ​​of the height scale lines 12 on the guide rod 403 before and after the movement. Using the horizontal distance and height difference, the inclination angle of the mesh can be calculated using the trigonometric formula θ = arctan(h / d) (where h is the height difference, d is the horizontal distance, and θ is the inclination angle), thereby achieving the function of measuring the mesh inclination angle while simultaneously detecting the amplitude.

[0041] In some examples, such as Figure 5 As shown, a plurality of universal wheels 14 are installed at the bottom of the base 1. The universal wheels 14 can support the weight of the entire device, and the operator can easily push the detection device to move in the workshop and flexibly adjust the position of the device according to actual detection needs, thereby improving the versatility of the device.

[0042] In some examples, a vibration amplitude detection method for a vibrating screen is provided, using an amplitude detection device for the vibrating screen, including the following steps: S1: Move the base 1 to the vibrating screen to be tested, adjust the height of the mounting block 2 and the horizontal position of the support plate 3, so that the hard rubber ring 405 at the bottom end of the detection rod 404 contacts the screen of the vibrating screen; S2: Start the vibrating screen, and the vibration of the screen is transmitted to the displacement sensor 6 via the detection component 4; S3: The displacement sensor 6 senses the distance moved by the detection component 4 under the vibration of the vibrating screen and converts it into an electrical signal and outputs it to the computer; S4: Record and analyze the electrical signal output by the displacement sensor 6 to obtain the amplitude data of the vibrating screen; S5: The support plate 3 slides horizontally, causing the hard rubber ring 405 at the bottom end of the detection rod 404 to change its horizontal position in contact with the screen; S6: Repeat steps S2 to S5 to perform amplitude detection at multiple lateral positions of the vibrating screen.

[0043] When the vibrating screen is turned on, the vibration of the screen is transmitted to the detection assembly 4. The displacement sensor 6 senses the change in the top position of the detection assembly 4 in real time and converts this displacement change into an electrical signal. This electrical signal is transmitted via a data transmission line to a computer, which processes and analyzes the electrical signal to obtain the amplitude data of the vibrating screen at that detection point.

[0044] After completing the amplitude test at one point, the operator can adjust the lateral position of the support plate 3 to move the detection assembly 4 to another position lateral to the vibrating screen mesh. Repeating the above detection process can obtain amplitude data at different lateral positions of the screen mesh. Since the position of the base 1 remains unchanged throughout the entire detection process, and the support plate 3 slides along a fixed lateral direction on the mounting block 2, it is possible to ensure that multiple detection points are located in the same direction, ensuring the consistency of the reference base of the detection data.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An amplitude detection device for a vibrating screen, characterized in that: The invention comprises a base (1), a mounting block (2), a support plate (3), a detection assembly (4), a spring (5) and a displacement sensor (6), wherein the mounting block (2) is arranged on the base (1) in a vertical sliding manner, the support plate (3) can slide laterally on the mounting block (2), the detection assembly (4) is arranged on the support plate (3) in a vertical sliding manner, the bottom of the detection assembly (4) is used to abut against the vibrating screen mesh, the two ends of the spring (5) act on the support plate (3) and the detection assembly (4) respectively, and are used to provide a force for the detection assembly (4) to abut against the vibrating screen mesh, the displacement sensor (6) is arranged on the support plate (3) and contacts the top of the detection assembly (4), and the displacement sensor (6) can sense the distance moved by the detection assembly (4) under the vibration of the vibrating screen, and convert it into an electrical signal and output it to a computer to detect the amplitude of the vibrating screen mesh.

2. The amplitude detection device for a vibrating screen according to claim 1, characterized in that: The mounting block (2) is provided with a sliding groove (201), and the support plate (3) is located in the sliding groove (201) and can slide in the sliding groove (201) in a horizontal or vertical direction.

3. The amplitude detection device for a vibrating screen according to claim 2, characterized in that: A transverse slide plate (301) is slidably provided on the horizontal side of the support plate (3); a longitudinal screw rod (302) arranged in the longitudinal direction and threadedly connected to the transverse slide plate (301) is rotatably provided on the mounting block (2); the longitudinal screw rod (302) can drive the support plate (3) to slide longitudinally in the sliding groove (201) with the help of the transverse slide plate (301); A longitudinal slide (303) is slidably provided on the longitudinal side of the support plate (3), and a transverse screw rod (304) arranged in the transverse direction and threadedly connected to the longitudinal slide (303) is rotatably provided on the mounting block (2). The transverse screw rod (304) can drive the support plate (3) to slide in the transverse direction in the sliding groove (201) with the help of the longitudinal slide (303).

4. The amplitude detection device for a vibrating screen according to claim 3, characterized in that: The detection assembly (4) comprises an upper limit plate (401), a lower limit plate (402), a guide rod (403) and a detection rod (404), wherein the guide rods (403) are two and the two ends are connected to the upper limit plate (401) and the lower limit plate (402) in a one-to-one correspondence, the guide rods (403) are slidably arranged on the support plate (3), the detection rod (404) is arranged at the bottom of the lower limit plate (402), the bottom of the detection rod (404) has a hard rubber ring (405), the hard rubber ring (405) is used to abut the vibrating screen, the top surface of the upper limit plate (401) contacts the displacement sensor (6), the spring (5) is sleeved on the guide rod (403), and the two ends abut the support plate (3) and the lower limit plate (402) respectively, for providing a force for the detection rod (404) to abut the vibrating screen mesh.

5. The amplitude detection device for a vibrating screen according to claim 1, characterized in that: A bracket (7) is provided on the support plate (3), and the displacement sensor (6) is detachably mounted on the top of the bracket (7). The bracket (7) has a socket (701) having the same cross-sectional shape as the support plate (3) for inserting the support plate (3).

6. The amplitude detection device for a vibrating screen according to claim 1, characterized in that: A support rod (8) is swingably provided on the base (1), and there are at least two support rods (8). A roller (9) is rotatably provided at the end of each support rod (8). The plurality of support rods (8) can be swung until the plurality of rollers (9) abut against the side wall of the vibrating screen, so that the length direction of the sliding groove (201) on the mounting block (2) is parallel to the vibrating screen.

7. The amplitude detection device for a vibrating screen according to claim 4, characterized in that: The support plate (3) has a transverse scale line (10), the mounting block (2) has a longitudinal scale line (11) along the length direction of the sliding groove (201), and the guide rod (403) has a height scale line (12).

8. The amplitude detection device for a vibrating screen according to claim 2, characterized in that: Guide sleeves (13) having the same cross-sectional shape as the support plate (3) are provided on both side surfaces of the mounting block (2) in a sliding manner along the length direction of the sliding groove (201), and the support plate (3) is located in the guide sleeves (13).

9. The amplitude detection device for a vibrating screen according to claim 1, characterized in that: Universal wheels (14) are mounted on the base (1).

10. A vibration amplitude detection method for a vibrating screen, using the vibration amplitude detection device for a vibrating screen according to claims 1 to 9, characterized in that: The following steps are involved: S1: Move the base (1) to the vibrating screen to be tested, adjust the height of the mounting block (2) and the lateral position of the support plate (3), so that the hard rubber ring (405) at the bottom end of the detection rod (404) contacts the screen of the vibrating screen; S2: Start the vibrating screen, and the vibration of the screen is transmitted to the displacement sensor (6) via the detection component (4); S3: The displacement sensor (6) senses the distance moved by the detection component (4) under the vibration of the vibrating screen, and converts the sensed distance into an electrical signal and outputs it to a computer; S4: recording and analyzing the electrical signal output by the displacement sensor (6) to obtain the amplitude data of the vibrating screen; S5: The support plate (3) slides horizontally, causing the hard rubber ring (405) at the bottom end of the detection rod (404) to change its horizontal position in contact with the screen; S6: Repeat steps S2 to S5 to perform amplitude detection at multiple lateral positions of the vibrating screen.

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