Elastic vibration reduction connecting device for efficient vibrating screen

Abstract

The utility model discloses an elastic vibration reduction connecting device for an efficient vibrating screen, relates to the technical field of vibrating screens, and aims to solve the problems that a traditional vibration reduction system is single in rigidity direction, resonance is easily caused when exciting force suddenly changes, and a screen body violently shakes and generates abnormal noise. The first mounting seats are mounted on the top face of the bottom frame, the second mounting seats are mounted on the bottom face of the screen body, the number of the first connecting assemblies is two, and the first mounting seats and the second mounting seats are connected with the first connecting seats and the second connecting seats through the first connecting assemblies. According to the Z-shaped series vibration reduction assembly, through staggered layout of the first connecting bases and the second connecting bases, the vibration reduction rubber strips synchronously consume energy in composite deformation, the four sets of vibration reduction rubber strips are arranged in a matrix mode at the inner corners to form a nonlinear rigidity gradient, and energy is consumed through friction of molecules in rubber in a low-frequency band; the high-frequency band reflects sound waves through the acoustic impedance mutation effect of the perforated structure, the overall noise level of equipment is lowered, and meanwhile the stress peak value of the screen body is lowered.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to an elastic vibration damping connection device for high-efficiency vibrating screens. Background Technology

[0002] Vibrating screens, as core equipment for material classification and screening, are widely used in mining, metallurgy, chemical and other fields. Traditional vibrating screens often use linear springs or single rubber vibration dampers to connect the screen body and the base frame, which has the following technical bottlenecks: the traditional damping system has a single stiffness direction, making it difficult to simultaneously suppress vertical, horizontal and oblique vibration energy, especially when the excitation force changes abruptly, it is prone to resonance, causing the screen body to shake violently and generate abnormal noise; the high proportion of rigid contact between connecting parts means that vibration energy is directly transmitted to the base frame, which reduces screening efficiency and aggravates the overall noise pollution of the equipment.

[0003] Therefore, this application provides an elastic vibration damping connection device for a high-efficiency vibrating screen to meet the requirements. Utility Model Content

[0004] The purpose of this application is to provide an elastic vibration damping connection device for high-efficiency vibrating screens, which aims to solve the problem that traditional vibration damping systems have a single stiffness direction and are prone to resonance when the excitation force changes abruptly, causing the screen body to shake violently and produce abnormal noise.

[0005] To achieve the above objectives, this application provides the following technical solution: an elastic vibration damping connection device for a high-efficiency vibrating screen, comprising a screen body and a base frame, and a vibration damping component. The screen body is located above the base frame, and the screen body and the base frame are connected by the vibration damping component. The vibration damping component further includes a first mounting seat and a first connecting seat, a first connecting component, a second connecting component, a second connecting seat, and a second mounting seat. The first mounting seat is installed on the top surface of the base frame, and the second mounting seat is installed on the bottom surface of the screen body. The first connecting component is provided in two sets, and the first mounting seat and the second mounting seat are connected to the first connecting seat and the second connecting seat through the first connecting component.

[0006] Connector No. 1 is connected to connector No. 2 via connector No. 2;

[0007] Mounting base No. 1 and mounting base No. 2, connecting base No. 1 and connecting base No. 2 are all provided with through holes, and vibration damping rubber strips are slidably connected to the inner walls of the through holes.

[0008] Preferably, the first connecting component includes a first connecting arm, a first movable arm, and a fixed arm. The first connecting arm is elliptical, and a first movable arm and a fixed arm are respectively installed at both ends of the first connecting arm.

[0009] The aforementioned No. 1 connecting assembly has two sets: the through holes on No. 1 and No. 2 mounting bases are respectively connected to their corresponding fixed arms; the through holes on No. 1 and No. 2 connecting bases are respectively connected to their corresponding No. 1 movable arms.

[0010] Preferably, the second connecting assembly includes a second connecting arm and a second movable arm. The second connecting arm is elliptical, and a second movable arm is provided at both ends of the second connecting arm. The two sets of second movable arms are slidably connected to the first connecting seat and the second connecting seat, respectively.

[0011] The first and second mobile arms are connected by a connecting mechanism.

[0012] Preferably, the connecting mechanism includes a connecting rod, a spring, and a positioning pin. The connecting rod passes through the first moving arm and the second moving arm, and the inner walls of the first moving arm and the second moving arm are respectively provided with a first annular groove and a second annular groove. The connecting rod is provided with a positioning groove, and two positioning grooves are provided as a group. A positioning pin is slidably connected in the positioning groove. A spring is press-fitted between the positioning pin and the positioning groove. The two groups of positioning pins are respectively adapted to the first annular groove and the second annular groove.

[0013] Preferably, the end of the connecting rod is provided with a positioning hole, and a positioning bolt is threaded into the positioning hole.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] In this invention, the Z-shaped series vibration damping components, through the staggered arrangement of the first and second connecting seats, allow the vibration damping rubber strips to simultaneously dissipate energy during the combined deformation of compression, tension, and bending. Vertical stiffness is provided by the axial compression of the vibration damping rubber strips, horizontal stiffness is achieved through the bending deformation of the elliptical plate structure of the connecting arm, and oblique loads are absorbed by the shear deformation of the segmented moving arm. The vibration suppression bandwidth is extended to all-directional load conditions. The matrix arrangement of the four sets of vibration damping rubber strips at the inner corners forms a nonlinear stiffness gradient. In the low-frequency range, energy is dissipated through the internal molecular friction of the rubber, and in the high-frequency range, sound waves are reflected by the acoustic impedance abrupt effect of the perforated structure. The overall noise level of the equipment is reduced, and the peak stress of the screen body is decreased. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2This is a schematic diagram of the vibration damping component structure of this utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the vibration damping component structure of this utility model. Figure 2 ;

[0020] Figure 4 This is an exploded structural diagram of the vibration damping component of this utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the diagram;

[0022] Figure 6 This is a schematic diagram of the structure of the first and second connecting components of this utility model. Figure 1 ;

[0023] Figure 7 This is a schematic diagram of the structure of the first and second connecting components of this utility model. Figure 2 .

[0024] In the diagram: 1. Screen body; 2. Base frame; 3. Mounting seat 1; 4. Connecting seat 1; 5. Connecting arm 1; 6. Moving arm 1; 60. Annular groove 1; 7. Fixed arm; 8. Connecting seat 2; 9. Mounting seat 2; 10. Connecting arm 2; 11. Moving arm 2; 110. Annular groove 2; 12. Vibration damping rubber strip; 13. Connecting rod; 130. Positioning groove; 131. Positioning hole; 14. Positioning bolt; 15. Spring; 16. Positioning pin. Detailed Implementation

[0025] 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.

[0026] Example: Reference Figure 1-7 The elastic vibration damping connection device for a high-efficiency vibrating screen shown includes a screen body 1, a base frame 2, and a vibration damping component. The screen body 1 and the base frame 2 are connected by the vibration damping component. Through the structural design of the vibration damping component, the vibration amplitude and stress of the screen body 1 during the operation of the excitation motor are reduced, and the screen body 1 can quickly pass through the resonance zone, avoiding the strong resonance phenomenon of traditional support systems.

[0027] In one embodiment of this invention, the vibration damping components are as follows: Mounting base 3 and Mounting base 9 have identical structures, and are respectively installed on the top surface of the base frame 2 and the bottom surface of the screen body 1. A connecting seat 4 and a connecting seat 8 are provided between Mounting base 3 and Mounting base 9, and the connecting seat 4 is connected to Mounting base 3 via a connecting assembly. Similarly, the connecting seat 8 and Mounting base 9 are also connected via a connecting assembly. (Each vibration damping component contains two sets of connecting assemblies, and the two sets of connecting assemblies are connected...) (The components are misaligned). The first connecting seat 4 and the second connecting seat 8 are connected by the second connecting component. The first mounting seat 3 has a through hole. The main structures of the first mounting seat 3, the second mounting seat 9, the first connecting seat 4, and the second connecting seat 8 are all the same (each has four sets of vibration damping rubber strips 12 located at the inner corners in the through hole). Through the above structural design, a Z-shaped arrangement is formed. Through multi-segment elastic deformation (tension, compression, and bending coordination), it can simultaneously cope with vertical, horizontal, and oblique loads, and the vibration suppression range is expanded.

[0028] As one implementation method in this embodiment, the first connecting component: the first connecting arm 5 is an elliptical connecting plate, and a fixed arm 7 and a first movable arm 6 are respectively provided on the same end face of the first connecting arm 5. The first movable arm 6 is half the length of the fixed arm 7. The fixed arm 7 is inserted into the first mounting base 3 (second mounting base 9), and the first movable arm 6 is inserted into the first connecting base 4 (second connecting base 8), thereby realizing the connection between the first mounting base 3 (second mounting base 9) and the first connecting base 4 (second connecting base 8).

[0029] As one implementation method in this embodiment, the second connecting component: Since the length of the first moving arm 6 is only half the length of the fixed arm 7, when the first moving arm 6 is inserted into the first connecting seat 4 (second connecting seat 8), half of the space is left in the through hole of the first connecting seat 4 (second connecting seat 8). By inserting the second moving arm 11 into the first connecting seat 4 (second connecting seat 8), the first moving arm 6 and the second moving arm 11 are spliced ​​together. The two sets of second moving arms 11 are connected by the second connecting arm 10, and then the first moving arm 6 and the second moving arm 11 are docked by the connecting mechanism, so that the synchronization between the two is improved.

[0030] As one embodiment of this example, the connecting mechanism has a first annular groove 60 and a second annular groove 110 respectively on the inner walls of the holes of the first moving arm 6 and the second moving arm 11. A positioning groove 130 is provided on the outer wall of the connecting rod 13 (two positioning grooves 130 are a group, and there are two groups). A positioning pin 16 is slidably connected in the positioning groove 130. The outer end of the positioning pin 16 is hemispherical, and a spring 15 is pressed between the positioning pin 16 and the positioning groove 130. The positioning pin 16 is adapted to the first annular groove 60 and the second annular groove 110 to realize the docking limit between the first moving arm 6 and the second moving arm 11.

[0031] The end of the connecting rod 13 passes through the first moving arm 6. The exposed part of the connecting rod 13 is provided with a positioning hole 131. A positioning bolt 14 is threaded into the positioning hole 131 to limit the connection and prevent the connecting rod 13 from falling out.

[0032] As one implementation method in this embodiment, in order to enable the first moving arm 6 and the second moving arm 11 to work synchronously, the holes on the first moving arm 6 and the second moving arm 11 are set as hexagonal holes, and the connecting rod 13 is synchronously set as a rod with a hexagonal cross section.

[0033] The working principle of this utility model is as follows: Mounting base 3 and mounting base 9 are fixed to the top surface of the base frame 2 and the bottom surface of the screen body 1 respectively by bolts. Then, the excitation motor on the screen body 1 is started to make the screen body 1 vibrate. During this process, mounting base 9 and mounting base 3 are connected to the corresponding connecting base 8 and connecting base 4 through the matching connecting component 1. The connecting base 4 and connecting base 8 are then connected through the connecting component 2, so that the above structure forms a Z-shaped or S-shaped arrangement. During operation, the vibration damping rubber strip 12 set in the perforation plays a role in vibration reduction and noise reduction.

[0034] The fixed arms 7 of the two sets of No. 1 connecting components are inserted into the through holes of No. 1 mounting base 3 and No. 2 mounting base 9, respectively. The length of the two sets of No. 1 moving arms 6 is only half the length of the through holes of No. 1 connecting base 4 and No. 2 connecting base 8. The other half of the space of the through holes of No. 1 connecting base 4 and No. 2 connecting base 8 is placed by the No. 2 moving arm 11 of the No. 2 connecting component. In order to improve the linkage between No. 1 moving arm 6 and No. 2 moving arm 11, No. 1 annular groove 60 and No. 2 annular groove 110 are respectively provided on the inner wall of No. 1 moving arm 6 and No. 2 moving arm 110. The connecting rod 13 is connected to the No. 1 annular groove 60 and No. 2 annular groove 110 through the spring 15 and the positioning pin 16 in the positioning groove 130 to achieve connection. The end of the connecting rod 13 passes through the No. 1 moving arm 6. The connecting rod 13 is provided with a positioning hole 131. The positioning bolt 14 threaded in the positioning hole 131 limits the connecting rod 13 and prevents it from falling off.

[0035] During the operation, the No. 1 connecting arm 5 serves to connect the fixed arm 7 and the No. 1 moving arm 6, and the No. 2 connecting arm 10 serves to connect the two sets of No. 2 moving arms 11.

[0036] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0037] Components not described in detail in this article are existing technologies.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An elastic vibration damping connection device for a high-efficiency vibrating screen, comprising a screen body (1) and a base frame (2), and a vibration damping assembly, wherein the screen body (1) is disposed above the base frame (2), and the screen body (1) and the base frame (2) are connected by the vibration damping assembly, characterized in that: The vibration damping assembly also includes a first mounting base (3) and a first connecting base (4), a first connecting assembly, a second connecting assembly, a second connecting base (8), and a second mounting base (9). The first mounting base (3) is installed on the top surface of the base frame (2), and the second mounting base (9) is installed on the bottom surface of the screen body (1). The first connecting assembly is provided in two sets. The first mounting base (3) and the second mounting base (9) are connected to the first connecting base (4) and the second connecting base (8) through the first connecting assembly. The first connecting seat (4) is connected to the second connecting seat (8) through the second connecting component; The No. 1 mounting base (3), the No. 2 mounting base (9), the No. 1 connecting base (4), and the No. 2 connecting base (8) are all provided with through holes, and a vibration damping rubber strip (12) is slidably connected to the inner wall of the through holes.

2. The elastic vibration damping connection device for a high-efficiency vibrating screen according to claim 1, characterized in that: The first connecting component includes a first connecting arm (5), a first movable arm (6), and a fixed arm (7). The first connecting arm (5) is elliptical, and a first movable arm (6) and a fixed arm (7) are respectively installed at both ends of the first connecting arm (5). The first connecting component is provided in two sets. The through holes of the first mounting base (3) and the second mounting base (9) are respectively connected to the corresponding fixed arm (7); the through holes on the first connecting base (4) and the second connecting base (8) are respectively connected to the corresponding first moving arm (6).

3. The elastic vibration damping connection device for a high-efficiency vibrating screen according to claim 2, characterized in that: The second connecting assembly includes a second connecting arm (10) and a second movable arm (11). The second connecting arm (10) is elliptical, and the second movable arm (11) is provided at both ends of the second connecting arm (10). The two sets of the second movable arms (11) are slidably connected to the first connecting seat (4) and the second connecting seat (8), respectively. The first movable arm (6) and the second movable arm (11) are connected by a connecting mechanism.

4. The elastic vibration damping connection device for a high-efficiency vibrating screen according to claim 3, characterized in that: The connecting mechanism includes a connecting rod (13), a spring (15), and a positioning pin (16). The connecting rod (13) passes through the first moving arm (6) and the second moving arm (11), and the first moving arm (6) and the second moving arm (11) are respectively provided with a first annular groove (60) and a second annular groove (110). The connecting rod (13) is provided with a positioning groove (130). The positioning grooves (130) are in groups of two, and there are two groups. The positioning pin (16) is slidably connected in the positioning groove (130). The spring (15) is pressed between the positioning pin (16) and the positioning groove (130). The two groups of positioning pins (16) are respectively adapted to the first annular groove (60) and the second annular groove (110).

5. The elastic vibration damping connection device for a high-efficiency vibrating screen according to claim 4, characterized in that: The end of the connecting rod (13) is provided with a positioning hole (131), and a positioning bolt (14) is threaded into the positioning hole (131).

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