CN109973586B - A pressure roller and eccentric connection device with a torsional vibration damping structure - Google Patents

Abstract

The application provides a compression roller and eccentric wheel connecting device with a torsion vibration reduction structure, which comprises a connecting shaft sleeve, a vibration reduction disc and an end cover, wherein the vibration reduction disc is arranged in the connecting shaft sleeve, a plurality of mounting cavities are uniformly arranged on the vibration reduction disc, vibration reduction springs are arranged in the vibration reduction disc, the end parts of the compression roller are mounted in compression roller mounting holes of the vibration reduction disc and are connected with spline grooves through splines, when the compression roller vibrates due to severe change of extrusion force between a ring die and the compression roller in the operation process of a ring die granulator, the vibration reduction disc is vibrated, so that the vibration reduction springs are compressed to absorb vibration energy, impact loads borne by the ring die and the compression roller are reduced, the service lives of the ring die and the compression roller are prolonged, and the maintenance cost is reduced.

Description

A connection device between a pressure roller and an eccentric wheel with a torsional vibration damping structure

Technical field

The present invention relates to the technical field of granulators, and specifically to a connection device between a pressure roller and an eccentric with a torsional vibration damping structure.

Background technique

Ring die granulators are widely used in feed, biomass energy and other fields. They rely on the rotation of the ring die to drive biomass materials into the space between the ring die and the pressure roller to turn the biomass into dense particles. At present, the pressure roller is fixed on the main shaft, and the gap between the ring die and the pressure roller is adjusted through the eccentric wheel. After adjusting the gap between the ring die and the pressure roller, the pressure roller shaft is completely fixed. Due to factors such as sand particles and iron filings inside the biomass, the extrusion force between the ring die and the pressure roller changes drastically, causing vibration of the ring die pellet mill, which reduces the life of the ring die, and even directly causes the ring die to vibrate. Collision with the pressure roller, causing damage to the ring die. In order to reduce the impact load on the ring die and the pressure roller and increase the service life of the ring die, an elastic connection device is designed between the eccentric wheel and the pressure roller to solve the severe vibration of the ring die caused by drastic changes in extrusion force.

Contents of the invention

The main purpose of the present invention is to provide a connection device between a pressure roller and an eccentric wheel with a torsional vibration damping structure to solve the severe vibration of the ring die caused by the drastic change in extrusion force during the operation of the ring die granulator in the prior art. The problem.

In order to achieve the above object, the present invention provides a connection device between a pressure roller and an eccentric wheel with a torsional vibration damping structure, which includes a connecting sleeve, a vibration damping disk and an end cover. The connecting sleeve is provided with three-level step holes inside. The stepped holes include a center hole, a middle hole and an outer hole whose inner diameter gradually expands from the inside to the outside. The center hole is a through hole for the end of the pressure roller to pass through. The eccentric is sleeved on the outer peripheral surface of the connecting sleeve; reduce The vibration plate is installed in the middle hole and has a pressure roller installation hole in the center through which the end of the pressure roller passes. The inner wall of the pressure roller installation hole is provided with a spline groove that matches the spline at the end of the pressure roller. The vibration damping plate There are multiple installation cavities evenly distributed in the circumferential direction. The damping spring is installed in the installation cavity and the outer diameter of the damping spring is greater than the thickness of the damping disk. The axial end face of the middle hole is provided with a first accommodation chamber corresponding to the installation cavity. groove, when installing, the part of the damping spring is embedded in the first receiving groove; the end cover is installed in the outer hole and the outer diameter matches the inner diameter of the outer hole. The end cover of the end cover is close to the end face of the damping plate and is provided with a corresponding installation cavity. When installing the second accommodating groove, part of the damping spring is embedded in the second accommodating groove. The end cover is axially fixedly connected to the connecting sleeve through screws and pressed on the outside of the damping disk; the damping plate is evenly distributed in the circumferential direction. There are multiple limit holes. The axial end face of the middle hole and the end cover are provided with limit pin mounting holes corresponding to the limit holes. The limit pin passes through the limit hole and both ends are installed on the axial end face of the middle hole and the end cover. In the installation hole of the limit pin on the roller, the limit hole is larger than the diameter of the limit pin, and the vibration damping plate can swing in a circumferential direction driven by the end of the pressure roller.

Further, the limiting holes are waist-shaped holes or square holes arranged in a circumferential direction.

Further, there are three installation cavities, damping springs, first receiving grooves, and second receiving grooves.

Further, the middle part of the vibration damping plate surrounds the end of the pressure roller and protrudes toward both ends to form an annular boss. The middle structure of the annular boss is consistent with the structure of the pressure roller mounting hole. The end of the pressure roller is installed in the annular boss. The end cover is provided with a boss mounting hole. When the end cover is pressed on the vibration damping disk, the annular boss is embedded in the center hole and the boss mounting hole respectively.

Further, the outer peripheral surface of the connecting sleeve is a stepped axial surface, and the eccentric is sleeved on the small diameter of the stepped axial surface and is axially connected to the large diameter part of the stepped axial surface through bolts.

By applying the technical solution of the present invention, a vibration damping disk is provided inside the connecting sleeve. A plurality of installation cavities are evenly arranged on the vibration damping disk and a vibration damping spring is provided inside. The end of the pressure roller is installed on the pressure roller of the vibration damping disk. In the installation hole and connected through splines and spline grooves, during the operation of the ring die granulator, when the extrusion force between the ring die and the pressure roller changes drastically causing the pressure roller to vibrate, the vibration damping disc will be Vibration occurs, so that the damping spring is compressed and absorbs the vibration energy, thereby reducing the impact load on the ring die and the pressure roller, increasing the service life of both, and reducing maintenance costs. At the same time, the connection device between the pressure roller and the eccentric wheel with a torsional vibration damping structure of the present invention also has the characteristics of simple structure and convenient manufacturing, and is worthy of popularization and application.

Description of the drawings

The description and drawings that constitute a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 shows a schematic diagram of the connection device between the pressure roller and the eccentric with a torsional vibration damping structure (only half of the end cover is shown);

Figure 2 shows a schematic diagram of the connection device between the pressure roller and the eccentric with a torsional vibration damping structure without the pressure roller and eccentric in Figure 1 (only half of the end cover is shown);

Figure 3 shows the exploded view 1 of Figure 2;

FIG. 4 shows the second exploded view of FIG. 2 .

Among them, the above-mentioned drawings include the following reference signs:

10. Connecting sleeve; 11. Center hole; 12. Middle hole; 13. Outer hole; 14. First receiving groove; 20. Vibration damping plate; 21. Pressure roller mounting hole; 22. Spline groove; 23. Installation cavity Body; 24. Limiting hole; 25. Annular boss; 30. End cover; 31. Second receiving groove; 40. Damping spring; 50. Limiting pin; 60. Screw; 70. Bolt; 80. Pressure roller ; 90. Eccentric wheel.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meanings commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the directional words used such as "up, down, top, bottom" usually refer to the direction shown in the drawings, or refer to the vertical or vertical position of the component itself. Vertically or in the direction of gravity; similarly, for ease of understanding and description, "inside and outside" refers to the inside and outside relative to the outline of each component itself, but the above directional terms are not used to limit the present invention.

In order to solve the problem of severe vibration of the ring die caused by drastic changes in extrusion force during the operation of the ring die granulator in the prior art, the present invention provides a connection device between a pressure roller and an eccentric wheel with a torsional vibration damping structure.

As shown in Figures 1 to 4, the pressure roller and eccentric connection device with a torsional vibration damping structure of the present invention includes a connecting sleeve 10, a vibration damping disc 20 and an end cover 30. The connecting sleeve 10 is provided with a three-stage The three-stage stepped hole includes a central hole 11 whose inner diameter gradually expands from the inside to the outside, a middle hole 12 and an outer hole 13. The central hole 11 is a through hole for the end of the pressure roller 80 to pass through, and the eccentric wheel 90 is sleeved On the outer peripheral surface of the connecting sleeve 10; the vibration damping disc 20 is installed in the middle hole 12 and is provided with a pressure roller mounting hole 21 in the center through which the end of the pressure roller 80 passes. The inner wall of the pressure roller mounting hole 21 is provided with a The splines at the end of the pressure roller 80 match the spline grooves 22. The damping disc 20 has a plurality of mounting cavities 23 evenly distributed in the circumferential direction. The damping spring 40 is installed in the mounting cavity 23 and the outer diameter of the damping spring 40 Greater than the thickness of the damping plate 20, a first receiving groove 14 is provided on the axial end surface of the middle hole 12 corresponding to the installation cavity 23. During installation, part of the damping spring 40 is embedded in the first receiving groove 14; the end cover 30 is installed In the outer hole 13 and the outer diameter matches the inner diameter of the outer hole 13, the end cover 30 is provided with a second receiving groove 31 corresponding to the installation cavity 23 on the end surface close to the damping plate 20. During installation, the part of the damping spring 40 Embedded in the second receiving groove 31, the end cover 30 is axially fixedly connected to the connecting sleeve 10 through the screw 60 and pressed on the outside of the vibration damping plate 20; the damping plate 20 also has a plurality of limiting holes 24 evenly distributed in the circumferential direction. , the axial end face of the middle hole 12 and the end cover 30 are provided with limit pin installation holes corresponding to the limit holes 24, and the limit pin 50 passes through the limit hole 24 and is installed at both ends on the axial end face and ends of the middle hole 12. In the limit pin installation hole on the cover 30 , the limit hole 24 is larger than the diameter of the limit pin 50 , and the vibration damping disc 20 can swing in a circumferential direction driven by the end of the pressure roller 80 .

By arranging a damping disc 20 inside the connecting sleeve 10, a plurality of installation cavities 23 are evenly arranged on the damping disc 20 and a damping spring 40 is arranged inside. The end of the pressure roller 80 is installed on the pressure roller of the damping disc 20. In the mounting hole 21 and connected to the spline groove 22 through splines, during the operation of the ring die granulator, when the extrusion force between the ring die and the pressure roller changes drastically and the pressure roller 80 vibrates, it will cause The damping disc 20 vibrates, so that the damping spring 40 is compressed to absorb the vibration energy, thereby reducing the impact load on the ring die and the pressure roller 80, increasing the service life of the two, and reducing maintenance costs.

As shown in FIGS. 3 and 4 , the limiting hole 24 is a circumferentially arranged waist-shaped hole or a square hole, thereby facilitating the placement of the damping spring 40 .

Preferably, as shown in FIGS. 3 and 4 , there are three installation cavities 23 , damping springs 40 , first receiving grooves 14 , and second receiving grooves 31 .

As shown in Figures 3 and 4, the pressure roller and eccentric connection device with a torsional vibration damping structure according to claim 1 is characterized in that the middle part of the vibration damping disk 20 surrounds the end of the pressure roller 80 and protrudes toward both ends. A part forms an annular boss 25. The middle structure of the annular boss 25 is consistent with the structure of the pressure roller mounting hole 21. The end of the pressure roller 80 is installed in the annular boss 25. The end cover 30 is provided with a boss mounting hole. The end cover 30 is pressed on the vibration damping plate 20, the annular boss 25 is embedded in the center hole 11 and the boss mounting hole respectively. . By providing the annular boss 25, the connection length between the end of the pressure roller 80 and the vibration damping disc 20 is increased, so that the vibration of the pressure roller 80 can be better transmitted to the vibration damping disc 20, thereby increasing the vibration damping effect.

As shown in Figure 1, the outer peripheral surface of the connecting sleeve 10 is a stepped axial surface, and the eccentric 90 is sleeved on the small diameter of the stepped axial surface and is axially connected to the large diameter part of the stepped axial surface through bolts 70.

It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, work, means, components and/or combinations thereof.

It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (1)

1. A connection device between a pressure roller and an eccentric wheel with a torsional vibration damping structure, which is characterized in that it includes: The connecting sleeve (10) is provided with a three-level stepped hole inside the connecting sleeve (10). The three-level stepped hole includes a central hole (11) whose inner diameter gradually expands from the inside to the outside, a middle hole (12) and The outer hole (13), the central hole (11) is a through hole for the end of the pressure roller (80) to pass through, and the eccentric (90) is sleeved on the outer peripheral surface of the connecting sleeve (10); Vibration damping disc (20), the damping disc (20) is installed in the middle hole (12) and has a pressure roller mounting hole (21) in the center through which the end of the pressure roller (80) passes, so The inner wall of the pressure roller mounting hole (21) is provided with spline grooves (22) that match the splines at the end of the pressure roller (80), and the vibration damping disk (20) is evenly distributed in the circumferential direction. A plurality of installation cavities (23), a damping spring (40) is installed in the installation cavity (23), and the outer diameter of the damping spring (40) is greater than the thickness of the damping disk (20), so A first receiving groove (14) is provided on the axial end surface of the middle hole (12) corresponding to the installation cavity (23). During installation, part of the damping spring (40) is embedded in the first receiving groove. (14) Inside; End cap (30), the end cap (30) is installed in the outer hole (13) and the outer diameter matches the inner diameter of the outer hole (13), the end cap (30) is close to the A second accommodation groove (31) is provided on the end surface of the vibration damping disk (20) corresponding to the installation cavity (23). During installation, part of the vibration damping spring (40) is embedded in the second accommodation groove (31). ), the end cover (30) is axially fixedly connected to the connecting sleeve (10) through a screw (60) and pressed on the outside of the vibration damping disk (20); The damping plate (20) also has a plurality of limit holes (24) evenly distributed in the circumferential direction, and the axial end faces of the middle hole (12) and the end cover (30) correspond to the limit holes. (24) A limit pin mounting hole is provided. The limit pin (50) passes through the limit hole (24) and both ends are installed on the axial end surface of the middle hole (12) and the end cover ( 30), the limit hole (24) is larger than the diameter of the limit pin (50), and the vibration damping disc (20) can be installed at the end of the pressure roller (80) Circumferential swing is achieved under the driving force. The limiting hole (24) is a waist-shaped hole or a square hole arranged in the circumferential direction. The installation cavity (23), the damping spring (40), the first accommodation There are three grooves (14) and the second receiving groove (31). The middle part of the damping plate (20) surrounds the end of the pressure roller (80) and protrudes toward both ends to form an annular boss (25). ), the middle structure of the annular boss (25) is consistent with the structure of the pressure roller mounting hole (21), the end of the pressure roller (80) is installed in the annular boss (25), the The end cover (30) is provided with a boss mounting hole. When the end cover (30) is pressed on the vibration damping disk (20), the annular bosses (25) are respectively embedded in the center holes (11). and in the boss mounting hole, the outer peripheral surface of the connecting sleeve (10) is a stepped axial surface, the eccentric (90) is sleeved on the small diameter of the stepped axial surface and is connected to the stepped axial surface through bolts (70). The large diameter portion of the stepped axial surface is axially connected.