CN110064583B - A nonlinear vibration relaxation screen - Google Patents

Abstract

The invention discloses a nonlinear vibration relaxation screen, comprising a screen body, a nonlinear spring device, a limit spring device and a driving device. The nonlinear spring device is arranged on the main screen frame and the floating screen frame of the screen body between and detachably connected with the main screen frame and the floating screen frame, the limit spring device is detachably connected with the main screen frame and is located at the end of the floating screen frame, the limit spring A distance is set between the device and the floating screen frame, and the driving device is connected to the screen body and used to drive the screen body to vibrate. In the present invention, after the nonlinear spring device is installed on the main screen frame and the floating screen frame, the frequency domain of the working condition of the nonlinear vibration relaxation screen is located in the nonlinear interval, the amplitude is relatively stable, the influence of external factors is small, and the limit spring The relative amplitude of the device control can not be too large, so that the life of the shear spring and the production efficiency of the whole device are greatly improved, and the production cost is reduced at the same time.

Description

A nonlinear vibration relaxation screen

technical field

The invention relates to the technical field of screening machinery, in particular to a nonlinear vibration relaxation screen.

Background technique

When performing deep screening of fine-grained materials, for a general vibrating relaxation screen, its relative amplitude during operation is greatly affected by the external environment such as working temperature and processing capacity, and it is easy to cause tearing of the shear spring. Further The relative amplitude between the main floating screen frames continues to increase, resulting in a large-scale tearing of the shear spring, which seriously reduces the working efficiency of the vibrating relaxation screen and increases the production cost.

The stiffness of the shear spring in the vibration relaxation screen is an important factor affecting its relative amplitude. The stability and durability of the shear spring are very helpful to the stability of the working state of the vibration relaxation screen. At present, the domestic shear spring The quality is easily damaged, and it is very unsatisfactory to people's current requirements for the use of equipment.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a non-linear vibration relaxation screen to solve the problems existing in the above-mentioned prior art, so that the amplitude of the relaxation screen is stable, and the service life and production efficiency are improved.

For achieving the above object, the present invention provides the following scheme:

The invention provides a nonlinear vibration relaxation screen, comprising a screen body, a nonlinear spring device, a limit spring device and a driving device, wherein the nonlinear spring device is arranged on the main screen frame and the floating screen frame of the screen body between and detachably connected with the main screen frame and the floating screen frame, the limit spring device is detachably connected with the main screen frame and is located at the end of the floating screen frame, the limit spring A distance is set between the device and the floating screen frame, and the driving device is connected with the screen body and used to drive the screen body to vibrate.

Preferably, there are several non-linear spring devices, the plurality of non-linear spring devices are evenly distributed and symmetrically arranged between the main screen frame and the floating screen frame, and there are four limit spring devices , the four limit spring devices are symmetrically arranged on the main screen frame.

Preferably, the non-linear spring device comprises a first main screen frame spring mounting seat and a second main screen frame spring mounting seat which are symmetrically arranged and a spring mounting seat provided on the first main screen frame and the second main screen The floating screen frame spring mounting seat between the frame spring mounting seats, one end of the first main screen frame spring mounting seat and the second main screen frame spring mounting seat is provided with a first hemispherical rubber spring through the connecting plate, Two ends of the floating screen frame spring mounting seat are respectively provided with a second hemispherical rubber spring through the connecting plate, the first hemispherical rubber spring and the second hemispherical rubber spring are arranged oppositely, and the adjacent The distance between the first hemispherical rubber spring and the second hemispherical rubber spring is smaller than the relative amplitude of the main screen frame and the floating screen frame.

Preferably, the upper sides of the first main screen frame spring mounting seat and the second main screen frame spring mounting seat are provided with several first long holes, and the angle steel of the main screen frame is provided with the The first through hole corresponding to the first long hole, the first main screen frame spring mounting seat and the second main screen frame spring mounting seat are both detachably connected to the main screen frame, and the floating screen frame spring The lower side of the mounting seat is provided with mounting holes, the channel steel of the floating screen frame is provided with a second through hole corresponding to the mounting hole, the spring mounting seat of the floating screen frame and the floating screen frame are detachable connect.

Preferably, the limiting spring device includes an elastic block installation box, an elastic block disposed inside the elastic block installation box and capable of sliding relative to the elastic block installation box, and an elastic block disposed on one side of the elastic block installation box and A jack screw mounting plate arranged side by side with the elastic block mounting box, a cover plate arranged on the outside of the elastic block mounting box, and a jack screw detachably connected with the jack screw mounting plate, the jack screw mounting plate is connected to the There is a gap between the elastic block installation boxes, a third through hole is arranged on the upper side of the jacking screw mounting plate, and the jacking screw mounting plate is installed on the angle steel of the main screen frame and is connected with the main screen frame. Removably connected, the cover plate is in contact with one side of the elastic block, the cover plate is provided with a number of second long holes, one side of the jack screw mounting plate and one side of the elastic block mounting box are connected. Each side is provided with a fourth through hole corresponding to the second long hole, the cover plate is detachably connected to the jacking wire mounting plate and the elastic block mounting box, and one end of the jacking wire passes through all the holes. The top wire mounting plate can be in contact with the outer wall of one end of the elastic block installation box, one end of the elastic block can be in contact with the inner wall of one end of the elastic block installation box, and the other end of the elastic block can be in contact with the floating screen frame. The distance between the elastic block and the floating screen frame is larger than the relative amplitude of the main screen frame and the floating screen frame and smaller than the safety amplitude of the screen body.

Preferably, the elastic block installation box is "U" shaped, the shape of the elastic block matches the shape of the inner space of the elastic block installation box, and the material of the elastic block is rubber.

Preferably, the driving device includes a transmission device and a vibration excitation device, the vibration excitation device is installed on the main screen frame and is located on the upper side of the center of mass of the main screen frame, and the transmission device is arranged on the main screen One side of the frame is connected with the main screen frame through the vibration excitation device, the transmission device includes a large pulley, a small pulley, a V-belt and a motor, and the large pulley is connected with the rotating shaft of the vibration excitation device, so The large pulley and the small pulley are connected through the V-belt, and the small pulley is mounted on the power output shaft of the motor.

Preferably, the screen body includes the main screen frame, the floating screen frame, shear springs and a screen plate, and the floating beam of the floating screen frame passes through the holes provided on the side plate of the main screen frame and The main beams of the main screen frame are alternately arranged, the floating beams of the floating screen frame are installed on the channel steel of the floating screen frame, and the channel steel of the floating screen frame is connected to the main screen through the shear spring. The angle steel on the side plate of the frame is detachably connected, the sieve plate is arranged on the inner side of the main screen frame, one end of the sieve plate is detachably connected to the main beam of the main screen frame, and the other side of the sieve plate is detachably connected. One end is detachably connected with the floating beam of the floating screen frame.

Preferably, the screen body further includes a support device, the support device includes a support spring and a support frame, and the support frame is arranged on both sides of the main screen frame and communicates with the main screen frame through the support spring. Support head connection.

Preferably, the support spring is a rubber spring, and the material of the sieve plate is polyurethane.

Compared with the prior art, the present invention achieves the following technical effects: after the nonlinear spring device is installed on the main screen frame and the floating screen frame, the frequency domain of the working condition of the nonlinear vibration relaxation screen is located in the nonlinear range, and its amplitude is relatively stable , it is less affected by external factors, and the relative amplitude of the main screen frame and the floating screen frame controlled by the limit spring device cannot be too large, which greatly improves the life of the shear spring and the production efficiency of the entire device, and reduces the production of the entire device. cost.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the structural representation of nonlinear vibration relaxation screen of the present invention;

Fig. 2 is the structural representation of the nonlinear spring device of the present invention;

Fig. 3 is the installation schematic diagram of the nonlinear spring device of the present invention;

Fig. 4 is the structural schematic diagram of the limit spring device of the present invention;

Fig. 5 is the installation schematic diagram of the left limit spring device of the present invention;

Fig. 6 is the installation schematic diagram of the right limit spring device of the present invention;

Fig. 7 is the structural representation of the sieve body of the present invention;

8 is a schematic structural diagram of a transmission device of the present invention;

Among them: 1-screen body, 2-non-linear spring device, 3-limiting spring device, 4-transmission device, 5-exciting device, 6-first main screen frame spring mounting seat, 7-second main screen frame Spring mount, 8-floating screen frame spring mount, 9-first hemispherical rubber spring, 10-second hemispherical rubber spring, 11-first slotted hole, 12-channel steel, 13-shear spring, 14 -Angle steel, 15-Elastic block installation box, 16-Elastic block, 17-Top wire mounting plate, 18-Cover plate, 19-Top wire, 20-Second long hole, 21-Side plate, 22-Screen plate, 23 -Support frame, 24-Support spring, 25-Support head, 26-Main screen frame, 27-Floating screen frame, 28-Large pulley, 29-Small pulley, 30-V-belt, 31-Motor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left" and "right" is based on the orientation and positional relationship shown in the accompanying drawings, and is only for the convenience of description The structure and operation mode of the invention do not indicate or imply that the indicated part must have a specific orientation and operate in a specific orientation, so it should not be construed as a limitation on the present invention.

The purpose of the present invention is to provide a nonlinear vibration relaxation screen to solve the problems existing in the prior art, so that the amplitude of the relaxation screen is stable, and the service life and production efficiency are improved.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1-FIG. 8: this embodiment provides a nonlinear vibration relaxation screen, including a screen body 1, a nonlinear spring device 2, a limit spring device 3 and a driving device. The nonlinear spring device 2 is arranged between the main screen frame 26 and the floating screen frame 27 of the screen body 1 and is detachably connected to the main screen frame 26 and the floating screen frame 27 , and the limit spring device 3 is detachably connected to the main screen frame 26 . It is located at the outer side of the end of the floating screen frame 27 , there is a space between the limit spring device 3 and the floating screen frame 27 , and the driving device is connected to the screen body 1 and used to drive the screen body 1 to vibrate.

Specifically, there are preferably several non-linear spring devices 2, and more preferably, the non-linear spring devices 2 are arranged symmetrically between the main screen frame 26 and the floating screen frame 27 in groups of four, up and down, left and right. More specifically, the channel steel 12 of the floating screen frame 27 is arranged between the two angle steels 14 provided on the upper and lower sides of the main screen frame 26 , and the upper end of the channel steel 12 of the floating screen frame 27 and the upper side angle steel 14 of the main screen frame 26 The distance therebetween is equal to the distance between the lower end of the channel steel 12 of the floating screen frame 27 and the lower side angle steel 14 of the main screen frame 26 . The nonlinear spring device 2 is arranged between the upper end of the channel steel 12 of the floating screen frame 27 and the upper angle steel 14 of the main screen frame 26 and between the lower end of the channel steel 12 of the floating screen frame 27 and the lower side angle steel 14 of the main screen frame 26 between.

The non-linear spring device 2 includes a first main screen frame spring mounting seat 6 and a second main screen frame spring mounting seat 7 which are symmetrically arranged, and are arranged on the first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 One end of the floating screen frame spring mounting seat 8, the first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 are fixedly connected with a first hemispherical rubber spring 9 through the connecting plate by means of bolts. The two ends of the screen frame spring mounting seat 8 are respectively fixed and connected with a second hemispherical rubber spring 10 through the connecting plate by means of bolts. The distance between the spherical rubber spring 9 and the second hemispherical rubber spring 10 is smaller than the relative amplitude of the main screen frame 26 and the floating screen frame 27 . Both the first hemispherical rubber spring 9 and the second hemispherical rubber spring 10 are fixedly mounted on the connecting plate by means of vulcanization, and the connecting plate is preferably a steel plate. When the relative amplitude of the main screen frame 26 and the floating screen frame 27 is greater than the distance between the adjacent first hemispherical rubber springs 9 and the second hemispherical rubber springs 10, the first hemispherical rubber springs 9 and the second hemispherical rubber springs The springs 10 interact and deform, thereby generating nonlinear stiffness, so as to change the relative amplitudes of the main screen frame 26 and the floating screen frame 27 and improve the stability of the working state of the entire device.

The upper sides of the first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 are provided with a number of first long holes 11, the number of the first long holes 11 is preferably four, and the main screen frame 26 The angle steel 14 is provided with a first through hole corresponding to the first elongated hole 11, and is provided with bolts. The first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 are installed on the first The long hole 11 and the first through hole are detachably connected with the main screen frame 26, and the first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 are both connected to the channel steel 12 of the floating screen frame 27. No contact. The lower side of the floating screen frame spring mounting seat 8 is provided with a mounting hole, the channel steel 12 of the floating screen frame 27 is provided with a second through hole corresponding to the mounting hole, and the floating screen frame spring mounting seat 8 and the floating screen frame 27 pass through. The bolts are detachably connected, and the spring mounting seat 8 of the floating screen frame has no contact with the angle steel 14 of the main screen frame. Before starting the equipment, if it is necessary to adjust the distance between the first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 and the floating screen frame spring mounting seat 8, loosen the bolts in the first long hole 11. Move the first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 left and right to adjust the first main screen frame spring mounting seat 6 and the second main screen frame spring mounting seat 7 and the floating screen frame spring mounting seat After adjusting the distance between the seats 8, the bolts in the first long hole 11 can be tightened.

There are preferably four limit spring devices 3 , and the four limit spring devices 3 are symmetrically arranged on the main screen frame 26 . More specifically, the two limit spring devices 3 are respectively arranged on one end of the floating screen frame 27 on one side of the main screen frame 26 , and the other two limit spring devices 3 are respectively arranged on the floating screen on the other side of the main screen frame 26 . one end of frame 27. The limit spring device 3 includes an elastic block installation box 15, an elastic block 16 disposed inside the elastic block installation box 15 and capable of sliding relative to the elastic block installation box 15, and disposed on one side of the elastic block installation box 15 and connected to the elastic block installation box. 15. The jacking screw mounting plate 17 arranged side by side, the cover plate 18 arranged on the outer side of the elastic block mounting box 15, and the jacking screw 19 connected with the jacking screw mounting plate 17 by screws. There is a gap between the jacking screw mounting plate 17 and the elastic block mounting box 15, the upper side of the jacking screw mounting plate 17 is provided with a third through hole, the jacking screw mounting plate 17 is installed on the angle steel 14 of the main screen frame 26, The bolts are installed in the third through holes and the corresponding installation holes on the main screen frame to realize detachable connection with the main screen frame. The cover plate 18 is in contact with one side of the elastic block 16 . The cover plate 18 is provided with a number of second long holes 20, and the number of the second long holes 20 is preferably four. The fourth through hole corresponding to the hole 20, the cover plate 18 is detachably connected with the jack screw mounting plate 17 and the elastic block mounting box 15 by installing the bolts in the second long hole 20 and the fourth through hole, and the cover plate 18 is used for In order to prevent the elastic block 16 from falling out of the elastic block installation box 15 in the process of extrusion deformation. The number of the jacking wires 19 is preferably two, and the two jacking wires 19 are respectively arranged on the upper side and the lower side of the jacking wire mounting plate 17. One end of the elastic block 16 is in contact with the inner wall of one end of the elastic block mounting box 15 , and the other end of the elastic block 16 can be in contact with one end of the floating screen frame 27 . In the initial state, the other end of the elastic block 16 is flush with the other end of the elastic block installation box 15 , and in the working state, the other end of the elastic block 16 can be in contact with one end of the floating screen frame 27 . The distance between the elastic block 16 and the floating screen frame 27 is larger than the relative amplitude of the main screen frame 26 and the floating screen frame 27 and smaller than the safety amplitude of 1 of the screen body. When the relative amplitudes of the main screen frame 26 and the floating screen frame 27 are larger than the distance between the first hemispherical rubber spring 9 and the second hemispherical rubber spring 10, the nonlinear spring device 2 works first, when the main screen frame 26 and the floating screen frame 26 and the floating screen frame 26 When the relative amplitude of the screen frame 27 is too large and larger than the safety amplitude of the main screen frame 26 and the floating screen frame 27, the limit spring device 3 will work. One end contacts and squeezes the elastic block 16 to deform, so that relative sliding occurs between the elastic block 16 and the elastic block installation box 15, and the limit spring device 3 plays a role to further protect the shear spring 13 and further improve the performance of the entire device. reliability. The safe amplitude of 1 of the sieve body refers to the amplitude of the entire sieve body 1 in a relatively stable state under the working state, and ensures that the shear spring will not be torn in a wide range.

The shape of the elastic block installation box 15 is preferably a "U" shape. One end of the elastic block installation box 15 is closed, and the other end is left open. The shape of the elastic block 16 matches the shape of the inner space of the elastic block installation box 15. The elastic block The material of 16 is preferably rubber. In the initial state, the other end of the elastic block 16 is flush with the other end of the elastic block installation box 15 . Before starting the equipment, if it is necessary to adjust the distance between the elastic block installation box 15 and the jacking screw mounting plate 17, loosen the bolts in the second long hole 20, and move the elastic block mounting box 15 and the jacking screw mounting plate 17 left and right. Adjust the distance between the elastic block installation box 15 and the jack screw mounting plate 17, and adjust the position of the jack screw 19 accordingly, push the elastic block 16 to move by tightening the jack screw 19, and realize the adjustment of the installation position of the elastic block 16. Adjust After completion, keep the top wire 19 in contact with one end of the elastic block 16 to limit the position of one end of the elastic block 16. After the adjustment, the bolts in the second long hole 20 can be tightened.

The driving device includes a transmission device 4 and a vibration excitation device 5 . The vibration excitation device 5 is preferably a vibration exciter. Specifically, the vibration excitation device 5 is located on the upper side of the center of mass of the main screen frame 26 and is mounted on the side plate 21 of the main screen frame 26 through a bearing seat. The transmission device 4 is arranged on one side of the main screen frame 26 and is connected with the main screen frame 26 through the vibration excitation device 5 . The transmission device 4 includes a large pulley 28, a small pulley 29, a V-belt 30 and a motor 31. The large pulley 28 is fixedly connected to the rotating shaft of the exciter. The large pulley 28 and the small pulley 29 are connected through the V-belt 30, and the small pulley 29 is installed on the motor. On the power output shaft of 31, the motor 31 is installed on the ground through a mounting bracket.

The screen body 1 includes a main screen frame 26 , a floating screen frame 27 , a shear spring 13 and a screen plate 22 . The floating beams of the floating screen frame 27 are alternately arranged with the main beams of the main screen frame 26 through the holes provided on the side plates of the main screen frame 26 . The channel steel 12 of the floating screen frame 27 is detachably connected to the angle steel 14 on the side plate 21 of the main screen frame 26 through bolts through the shear spring 13 . Specifically, the shear spring 13 is arranged between the upper end of the channel steel 12 of the floating screen frame 27 and the upper angle steel 14 of the main screen frame 26 and between the lower end of the channel steel 12 of the floating screen frame 27 and the lower side of the main screen frame 26 Between angle steel 14. The screen plate 22 is arranged inside the main screen frame 26 , one end of the screen plate 22 is detachably connected to the main beam of the main screen frame 26 , and the other end of the screen plate 22 is detachably connected to the floating beam of the floating screen frame 27 . Specifically, the screen deck 22 is connected with the floating beam of the main beam of the main screen frame 26 and the floating beam of the floating screen frame 27 through bolt connection or through a wedge bar press fit. The relative movement of the main screen frame 26 and the floating screen frame 27 causes the screen plate 22 to move one sheet at a time, thereby completing the material screening process. The screen body 1 also includes a support device, which includes a support spring 24 and a support frame 23 . The support frame 23 is arranged on both sides of the main screen frame 26 and is connected to the support head 25 of the main screen frame 26 through the support spring 24 . The support spring 24 is preferably a rubber spring, and the material of the screen plate 22 is preferably polyurethane.

The working principle of the nonlinear vibration relaxation screen in this embodiment is as follows: start the equipment, the motor 31 drives the small pulley 29 to rotate, and transmits the power to the large pulley 28 through the transmission of the V-belt 30, and the large pulley 28 drives the vibration exciter to synchronize Rotation, under the action of the exciter, the main screen frame 26 vibrates synchronously with the exciter. Due to the action of the shear spring 13 connected between the main screen frame 26 and the floating screen frame 27, the main screen frame 26 and the floating screen A relative movement of a certain amplitude is generated between the frames 27, when the relative amplitude of the main screen frame 26 and the floating screen frame 27 is smaller than the distance between the first hemispherical rubber spring 9 and the second hemispherical rubber spring 10 of the nonlinear spring device 2 , the stiffness of the whole system is the shear spring stiffness, which is approximately linear stiffness. When the relative amplitude of the main screen frame 26 and the floating screen frame 27 is greater than that of the first hemispherical rubber spring 9 and the second hemispherical rubber spring 10 of the nonlinear spring device 2 When there is a gap between the two, the first hemispherical rubber spring 9 and the second hemispherical rubber spring 10 interact and deform, and the nonlinear spring device 2 plays a role, so that the nonlinear spring device 2 generates nonlinear stiffness. Within the relative amplitude of the frame 26 and the floating screen frame 27, due to the mutual collision of the first hemispherical rubber spring 9 and the second hemispherical rubber spring 10 and the nonlinear deformation of the first hemispherical rubber spring 9 and the second hemispherical rubber spring 10 In turn, the whole system exhibits nonlinear stiffness characteristics and improves the stability of the nonlinear vibration relaxation screen under working conditions. When the distance between the limit spring device 3 and the floating screen frame 27 is greater than the distance between the main screen frame 26 and the floating screen frame 27 When there is a relative amplitude between the two, the limit spring device 3 and the floating screen frame 27 have a relative effect. At this time, the floating screen frame 27 is in contact with the elastic block 16, and the elastic block 16 is squeezed to deform, which plays a role in the vibration of the floating screen frame 27. A certain limit, so as to achieve the purpose of further control of the amplitude.

In the nonlinear vibration relaxation screen in this embodiment, after the nonlinear spring device 2 is installed on the main screen frame 26 and the floating screen frame 27, the operating frequency domain of the nonlinear vibration relaxation screen is located in the nonlinear range, which ensures that the main screen The relative amplitude of the screen frame 26 and the floating screen frame 27 is relatively stable and is less affected by external factors, and the distance between the limit spring device 3 and the floating screen frame 27 is larger than the relative amplitude between the main screen frame 26 and the floating screen frame 27 And it is smaller than the safety amplitude of the screen body, and the relative amplitude of the main screen frame and the floating screen frame 27 is further controlled not to be too large, which ensures that the shear spring 13 will not be torn in a large range during the working process, and improves the shear spring 13. At the same time, the production efficiency of the whole device is greatly improved, and the production cost of the whole device is reduced at the same time, and the distance between the nonlinear spring device 2 and the limit spring device 3 can be adjusted, which is convenient to adjust and meets the current working conditions. .

In this specification, specific examples are used to illustrate the principles and implementations of the present invention, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; There will be changes in the specific implementation manner and application scope of the idea of the invention. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (9)

1. A non-linear vibratory flip-flow screen characterized by: the screen comprises a screen body, a nonlinear spring device, a limiting spring device and a driving device, wherein the nonlinear spring device is arranged between a main screen frame and a floating screen frame of the screen body and is detachably connected with the main screen frame and the floating screen frame;

nonlinear spring device is including the first main reel spring mount pad and the main reel spring mount pad of second that the symmetry set up and set up in first main reel spring mount pad with the reel spring mount pad that floats between the main reel spring mount pad of second, first main reel spring mount pad with the one end of the main reel spring mount pad of second all is provided with a first hemisphere rubber spring through the connecting plate, the both ends of the reel spring mount pad that floats pass through the connecting plate is provided with a second hemisphere rubber spring respectively, first hemisphere rubber spring with second hemisphere rubber spring sets up relatively, and is adjacent first hemisphere rubber spring with interval between the second hemisphere rubber spring is less than main reel with the relative amplitude of reel floats.

2. The non-linear vibratory relaxation screen of claim 1, wherein: the non-linear spring device is a plurality of, a plurality of non-linear spring device evenly distributed and symmetry set up in main reel with between the reel floats, spacing spring device is four, four spacing spring device symmetry set up in on the main reel.

3. The non-linear vibratory relaxation screen of claim 1, wherein: first main reel spring mount with the upside of the main reel spring mount of second all is equipped with the first slot hole of a plurality of, be equipped with on the angle steel of main reel with the corresponding first through-hole of first slot hole, first main reel spring mount with the main reel spring mount of second all with the connection can be dismantled to main reel, the downside of the reel spring mount that floats is equipped with the mounting hole, be equipped with on the channel-section steel of reel that floats with the corresponding second through-hole of mounting hole, the reel spring mount that floats with the connection can be dismantled to the reel that floats.

4. The non-linear vibratory relaxation screen of claim 1, wherein: the limiting spring device comprises an elastic block mounting box, an elastic block which is arranged in the elastic block mounting box and can slide relative to the elastic block mounting box, a jackscrew mounting plate which is arranged on one side of the elastic block mounting box and is arranged side by side with the elastic block mounting box, a cover plate which is arranged on the outer side of the elastic block mounting box and a jackscrew which is detachably connected with the jackscrew mounting plate, wherein a gap is arranged between the jackscrew mounting plate and the elastic block mounting box, a third through hole is arranged on the upper side of the jackscrew mounting plate, the jackscrew mounting plate is arranged on angle steel of the main screen frame and is detachably connected with the main screen frame, the cover plate is in contact with one side of the elastic block, a plurality of second long holes are arranged on the cover plate, and fourth through holes corresponding to the second long holes are arranged on one side of the jackscrew mounting plate and one side of the elastic block mounting box, the apron with the jackscrew mounting panel with the connection can be dismantled to the elastic block mounting box, the one end of jackscrew is passed the jackscrew mounting panel can with the outer wall contact of elastic block mounting box one end, the one end of elastic block with the inner wall contact of elastic block mounting box one end, the other end of elastic block can with the one end contact of floating the reel, the elastic block with the interval between the reel that floats is greater than main reel with the relative amplitude of the reel that floats just is less than the safe amplitude of screen frame.

5. The nonlinear vibratory relaxation screen of claim 4, wherein: the elastic block mounting box is U-shaped, the shape of the elastic block is matched with that of the inner space of the elastic block mounting box, and the elastic block is made of rubber.

6. The non-linear vibratory relaxation screen of claim 1, wherein: drive arrangement includes transmission and excitation device, the excitation device install in on the main reel and be located the barycenter upside of main reel, transmission set up in one side of main reel is passed through the excitation device with main reel is connected, transmission includes big belt pulley, belt lace wheel, V belt and motor, big belt pulley with the pivot of excitation device is connected, big belt pulley with the belt lace wheel passes through the V belt is connected, belt lace wheel install in on the power output shaft of motor.

7. The nonlinear vibratory relaxation screen of claim 6, wherein: the screen frame includes main reel float reel, shearing spring and sieve, the unsteady roof beam of unsteady reel passes the hole that sets up on the curb plate of main reel with the girder of main reel is arranged in turn, the unsteady roof beam of unsteady reel install in on the channel-section steel of unsteady reel, the channel-section steel of unsteady reel passes through the shearing spring with the connection can be dismantled to angle steel on the curb plate of main reel, the sieve set up in the inboard of main reel, the one end of sieve with the connection can be dismantled to the girder of main reel, the other end of sieve with the connection can be dismantled to the unsteady roof beam of unsteady reel.

8. The non-linear vibratory relaxation screen of claim 7, wherein: the screen frame still includes strutting arrangement, strutting arrangement includes supporting spring and support frame, the support frame set up in the both sides of main reel and through supporting spring with the support head of main reel is connected.

9. The non-linear vibratory relaxation screen of claim 8, wherein: the supporting spring is a rubber spring, and the sieve plate is made of polyurethane.

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