A multi-spring counter-resonant screen

Abstract

The utility model provides a kind of multi-spring anti-resonance screening machine, it is related to screening machine equipment technical field, including screen body mechanism, the screen body mechanism is installed on connecting frame by shock absorbing connector, and the bottom of connecting frame is equipped with shock absorbing base.The utility model will damp spring group one be directly integrated in the bottom mounting bracket of screen body mechanism, realizes the first-stage energy dissipation at vibration source, and then through connecting column, connecting sleeve and the obtuse angle arrangement of damp spring group two constitute multidirectional rotation hinged structure, and combine with the middle part connection of connecting sleeve, and the two ends are fixed in connecting frame several character curved plate spring, form two-stage vibration isolation, through the coupling of multiple shock absorbing structure, effectively change the overall vibration characteristic of system, realize good anti-resonance effect, so that in the promotion screening efficiency and work stability, greatly prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, and in particular to a multi-spring anti-resonance screening machine. Background Technology

[0002] The anti-resonance screen is a high-efficiency vibrating screening equipment designed based on the anti-resonance principle. Through elastic elements and a damping system, it forms a specific vibration system, which greatly amplifies the vibration of the working screen body to achieve efficient screening. At the same time, the dynamic load transmitted to the foundation frame or foundation is significantly reduced or even theoretically eliminated, thus achieving the unique effect of strong vibration of the working body while the foundation body hardly vibrates. Ultimately, it achieves the purpose of improving screening efficiency, reducing energy consumption, and extending equipment life.

[0003] In existing technologies, traditional anti-resonance screen vibration reduction schemes are often relatively simple in structure, mostly using simple springs or rubber shock absorbers. They lack an efficient energy dissipation mechanism at the vibration source, resulting in a large amount of vibration energy being directly transferred to the main structure and foundation, which can easily cause structural fatigue damage. At the same time, traditional suspension or support systems are difficult to effectively cope with complex multi-directional vibrations, especially under horizontal and longitudinal coupled vibration conditions, the vibration isolation effect is poor and resonance is easy to occur, which can easily lead to excessive wear of the machine body and a reduction in service life. Improvements are needed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a multi-spring anti-resonance screen.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-spring anti-resonance screen machine, including a screen body mechanism, wherein the screen body mechanism is installed on a connecting frame through a shock-absorbing connector, and a shock-absorbing base is installed at the bottom of the connecting frame; The vibration damping connector includes a connecting column installed on the side wall of the resonant screen body, a connecting sleeve rotatably connected to the connecting column, and a second damping spring assembly rotatably connected to both ends of the connecting sleeve. The end of the second damping spring assembly away from the connecting sleeve is installed on the connecting frame, and a curved leaf spring is installed at the bottom center of the connecting column by bolts.

[0006] In a preferred embodiment, the shock-absorbing base includes a connecting plate detachably mounted on the bottom of the connecting frame. Square telescopic columns are installed at the four corners of the lower side of the connecting plate. The ends of the four square telescopic columns away from the connecting plate are respectively installed on the two ends of the two base plates. The two base plates are connected by an intermediate seat. A spring assembly is detachably mounted on the intermediate seat. The end of the spring assembly away from the intermediate seat is detachably mounted on the connecting seat. The connecting seat is fixedly mounted on the bottom of the connecting plate.

[0007] In a preferred embodiment, the screen body mechanism includes a resonant screen body with an exciter mounted on its bottom via a bottom mounting bracket. A damping spring assembly is mounted on both ends of the bottom mounting bracket, and the end of the damping spring assembly away from the bottom mounting bracket is mounted on the upper side of the connecting plate.

[0008] In a preferred embodiment, the curved leaf spring is U-shaped, and the middle part of the curved leaf spring is connected to the connecting sleeve. Both ends of the curved leaf spring are installed on the connecting frame by bolts.

[0009] In a preferred embodiment, the intermediate seat is located directly below the opening of the connecting plate, and the connecting seats are located on both sides of the opening of the connecting plate.

[0010] In a preferred embodiment, the damping spring assembly is located between the two openings in the connecting plate.

[0011] In a preferred embodiment, the spring assembly is arranged at an angle.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention integrates a damping spring assembly one directly onto the bottom mounting frame of the screen body mechanism, achieving primary energy dissipation at the vibration source. Then, a multi-directional rotating hinge structure is formed by connecting columns, connecting sleeves, and a second damping spring assembly arranged at an obtuse angle. Combined with a zigzag curved leaf spring connected to the middle of the connecting sleeve and fixed at both ends to the connecting frame, a secondary vibration isolation is formed, improving the isolation capability for lateral and longitudinal vibrations. Simultaneously, a rigid guide is provided by a square telescopic column, and a composite structure with multi-directional elastic buffering provided by an inclined spring assembly achieves synergistic cancellation of residual vibrations in the vertical and horizontal directions. Through the coupling of multiple damping structures, the overall vibration characteristics of the system are effectively changed, achieving a good anti-resonance effect. This significantly extends the equipment's lifespan while improving screening efficiency and operational stability. Attached Figure Description

[0013] Figure 1 A schematic diagram of a multi-spring anti-resonance screen provided by this utility model.

[0014] Figure 2 This is a structural schematic diagram of a shock-absorbing connecting component for a multi-spring anti-resonance screen provided by this utility model.

[0015] Figure 3 This is a schematic diagram of the shock-absorbing base of a multi-spring anti-resonance screen machine provided by this utility model.

[0016] Figure 4 This is a disassembled schematic diagram of the shock-absorbing base of a multi-spring anti-resonance screen machine provided by this utility model.

[0017] Figure 5 A schematic diagram showing the connection between the screen body mechanism and the shock-absorbing base of a multi-spring anti-resonance screen provided by this utility model.

[0018] Legend: 1. Screen body mechanism; 2. Vibration damping connector; 3. Connecting frame; 4. Vibration damping base; 11. Resonance screen body; 12. Bottom mounting frame; 13. Vibrator; 14. Damping spring assembly one; 21. Connecting post; 22. Connecting sleeve; 23. Damping spring assembly two; 24. Curved leaf spring; 41. Connecting plate; 42. Square telescopic column; 43. Base plate; 44. Intermediate seat; 45. Spring assembly; 46. Connecting seat. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] like Figure 1 , Figure 2 and Figure 5 As shown, this utility model provides a technical solution: a multi-spring anti-resonance screen machine, including a screen body mechanism 1, which is mounted on a connecting frame 3 via a shock-absorbing connector 2. A shock-absorbing base 4 is installed at the bottom of the connecting frame 3. The screen body mechanism 1 includes a resonant screen body 11 with a vibrator 13 mounted on the bottom via a bottom mounting bracket 12. Damping spring groups 14 are installed on both ends of the bottom mounting bracket 12. In this design, the resonant screen body 11 carries the vibrator 13 to generate vibration via the bottom mounting bracket 12. The damping spring groups 14 installed on both ends of the bottom mounting bracket 12 constitute the first stage of vibration reduction. The damping spring groups 14 can directly absorb and buffer part of the vibration energy generated by the vibrator 13, reducing the transmission of vibration energy to the shock-absorbing base 4. The screen body mechanism 1 is elastically mounted on the connecting frame 3 via the shock-absorbing connector 2, forming the second stage of vibration isolation, further isolating the vibration of the screen body. Finally, the shock-absorbing base 4 at the bottom of the connecting frame 3 serves as the third stage of vibration reduction, ultimately isolating the residual vibration from the ground. The vibration damping connector 2 includes a connecting column 21 installed on the side wall of the resonant screen body 11. A connecting sleeve 22 is rotatably connected to the connecting column 21. A second damping spring assembly 23 is rotatably connected to both ends of the connecting sleeve 22. The end of the second damping spring assembly 23 away from the connecting sleeve 22 is installed on the connecting frame 3. A curved leaf spring 24 is installed at the bottom center of the connecting column 21 by bolts. In this design, the connecting column 21 is fixed to the side wall of the resonant screen body 11 to directly transmit vibration. The rotatable connection between the connecting sleeve 22 and the connecting column 21, as well as the rotatable connection between its two ends and the second damping spring assembly 23, forms a hinge system that can move flexibly in multiple directions. This allows the second damping spring assembly 23 to effectively absorb and buffer the vibration energy from the screen body in multiple directions. At the same time, the curved leaf spring 24 installed at the bottom of the connecting column 21 can produce significant elastic deformation when subjected to force. In conjunction with the second damping spring assembly 23, it further dissipates vibration and provides additional restoring force. Furthermore, the curved leaf spring 24 is in the shape of a "Z", and the middle part of the curved leaf spring 24 is connected to the connecting sleeve 22. Both ends of the curved leaf spring 24 are installed on the connecting frame 3 by bolts. Furthermore, the included angle between the two damping spring groups 23 is an obtuse angle.

[0021] In this embodiment, the connecting column 21 fixed to the side wall of the resonant screen body 11 transmits the vibration to the connecting sleeve 22 which is rotatably connected to the connecting column 21. The two ends of the connecting sleeve 22 are rotatably connected at an obtuse angle, connecting the two damping spring groups 23 to the connecting frame 3. This design allows the damping spring groups 23 to move flexibly in multiple directions and effectively buffer the vibration. At the same time, the curved leaf spring 24 installed at the bottom of the connecting column 21 serves as an elastic element. Through the Z-shaped structure design of the curved leaf spring 24, with the middle of the curved leaf spring 24 connected to the connecting sleeve 22 and the two ends fixed to the connecting frame 3, the curved leaf spring 24 can generate adaptive elastic deformation during operation. Together with the damping spring groups 23 arranged at an obtuse angle, they dissipate vibration energy and provide multi-dimensional restoring force. Example

[0022] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the shock-absorbing base 4 includes a connecting plate 41 that is detachably installed at the bottom of the connecting frame 3. One end of the damping spring assembly 14 away from the bottom mounting bracket 12 is installed on the upper side of the connecting plate 41. The damping spring assembly 14 is located between the two openings of the connecting plate 41. Square telescopic columns 42 are installed at the four corners of the lower side of the connecting plate 41. The ends of the four square telescopic columns 42 away from the connecting plate 41 are respectively installed on the two ends of the two base plates 43. The two base plates 43 are connected by an intermediate seat 44. A spring assembly 45 is detachably installed on the intermediate seat 44. The spring assembly 45 is inclined. The end of the spring assembly 45 away from the intermediate seat 44 is detachably installed on the connecting seat 46. The connecting seat 46 is fixedly installed at the bottom of the connecting plate 41. The intermediate seat 44 is located directly below the opening of the connecting plate 41, and the connecting seats 46 are located on both sides of the opening of the connecting plate 41.

[0023] In this embodiment, the load from the upper connecting frame 3 is detachably mounted, while the damping spring assembly 14 is installed on the upper side of the connecting plate 41 and located between the two openings of the connecting plate 41, forming the first buffer of the vibration transmitted from the screen body mechanism 1, directly consuming part of the energy. The square telescopic columns 42 at the four corners of the lower side of the connecting plate 41 provide rigid support and guidance in the vertical direction, ensuring the stability of the overall structure and limiting lateral displacement. The two base plates 43 are connected by the intermediate seat 44. The spring assembly 45 installed on the intermediate seat 44 is inclined, with one end acting on the intermediate seat 44 and the other end acting on the bottom of the connecting plate 41 through the connecting seat 46. This inclined design allows the elastic force of the spring assembly 45 to be effectively decomposed into vertical and horizontal directions, thereby buffering vibrations from multiple directions at the same time.

[0024] Working principle: like Figures 1 to 5 As shown, the sieve body mechanism 1 of this utility model generates vibration through the vibrator 13 on the bottom mounting frame 12. During the vibration process: The damping spring assembly 14 installed at both ends of the bottom mounting bracket 12 serves as the first stage of vibration reduction, directly absorbing and dissipating part of the vibration energy and reducing the transmission of vibration energy to the damping base 4. The vibration damping connector 2 serves as the second level of vibration isolation. The connecting column 21 of the vibration damping connector 2 is fixed to the side wall of the resonant screen body 11 to transmit vibration. The rotating connection between the connecting sleeve 22 and the connecting column 21, and the damping spring group 23 with obtuse angles at both ends of the connecting sleeve 22, form a multi-directional hinge system, which allows the damping spring group 23 to flexibly buffer multi-directional vibration. At the same time, the middle of the curved leaf spring 24 at the bottom of the connecting column 21 is connected to the connecting sleeve 22, and the two ends of the curved leaf spring 24 are fixed to the connecting frame 3, so that the curved leaf spring 24 can generate elastic deformation during operation and work together with the damping spring group 23 to dissipate energy and provide multi-dimensional restoring force, further isolating the screen body vibration. The shock-absorbing base 4 serves as the third stage of vibration reduction. The connecting plate 41 of the shock-absorbing base 4 bears the load of the connecting frame 3. The damping spring assembly 14 is installed between the two openings on the upper side of the connecting plate 41. The damping spring assembly 14 forms the first buffer. The square telescopic columns 42 at the four corners of the lower side of the connecting plate 41 provide vertical rigid support and guidance to limit the lateral displacement of the body. The two base plates 43 are connected by the intermediate seat 44. The spring assembly 45, which is inclined on the intermediate seat 44, acts on the intermediate seat 44 at one end and acts on the bottom of the connecting plate 41 through the connecting seat 46 at the other end. The intermediate seat 44 is located directly below the opening of the connecting plate 41, and the connecting seat 46 is located on both sides of the opening, so that the elastic force of the spring assembly 45 is decomposed into vertical and horizontal directions, while buffering multi-directional vibration. Therefore, the damping spring assembly 14, the shock absorber connector 2, and the shock absorber base 4 work together in series to gradually reduce vibration energy, change the system's natural frequency, avoid coinciding with the excitation frequency, thereby effectively suppressing resonance, achieving anti-resonance effect, and improving equipment stability and screening efficiency.

[0025] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A multi-spring anti-resonance screen machine, characterized in that, comprising a screen body mechanism (1), wherein the screen body mechanism (1) is mounted on a connecting frame (3) via shock-absorbing connecting members (2), and a shock-absorbing base (4) is mounted at the bottom of the connecting frame (3); The shock-absorbing connecting member (2) comprises a connecting column (21) mounted on the side wall of the resonance screen body (11), a connecting sleeve (22) is rotatably connected to the connecting column (21), two ends of the connecting sleeve (22) are each rotatably connected with a second damping spring set (23), one end of the second damping spring set (23) away from the connecting sleeve (22) is mounted on the connecting frame (3), and a curved plate spring (24) is mounted at the middle position of the bottom of the connecting column (21) via bolts.

2. The multi-spring anti-resonance screen machine according to claim 1, characterized in that: The shock-absorbing base (4) comprises a connecting plate (41) detachably mounted at the bottom of the connecting frame (3), square telescopic columns (42) are respectively mounted at four corners of the lower side surface of the connecting plate (41), ends of the four square telescopic columns (42) away from the connecting plate (41) are respectively mounted at two ends of two base plates (43), the two base plates (43) are connected via a middle seat (44), a spring set (45) is detachably mounted on the middle seat (44), one end of the spring set (45) away from the middle seat (44) is detachably mounted on a connecting seat (46), and the connecting seat (46) is fixedly mounted at the bottom of the connecting plate (41).

3. The multi-spring anti-resonance screen machine according to claim 1, characterized in that: The screen body mechanism (1) comprises a resonance screen body (11) with a vibrator (13) mounted at the bottom thereof via a bottom mounting frame (12), two ends of the bottom mounting frame (12) are each mounted with a first damping spring set (14), and one end of the first damping spring set (14) away from the bottom mounting frame (12) is mounted on the upper side surface of the connecting plate (41).

4. The multi-spring anti-resonance screen machine according to claim 1, characterized in that: The curved plate spring (24) is in a shape of several Chinese character "ji", the middle part of the curved plate spring (24) is connected with the connecting sleeve (22), and two ends of the curved plate spring (24) are both mounted on the connecting frame (3) via bolts.

5. A multi-spring anti-resonance screen machine according to claim 2, characterized in that: The middle seat (44) is located directly below the opening of the connecting plate (41), and the connecting seats (46) are respectively located on two sides of the opening of the connecting plate (41).

6. A multi-spring anti-resonance screen machine according to claim 3, characterized in that: The first damping spring set (14) is located between the two openings of the connecting plate (41).

7. A multi-spring anti-resonance screen machine according to claim 2, characterized in that: The spring set (45) is arranged in an inclined manner.

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