CN112718043A

CN112718043A - Impact isolation system in rice hulling roller

Info

Publication number: CN112718043A
Application number: CN202011483447.0A
Authority: CN
Inventors: 廖敏; 杨亚军; 张强; 郑睿恺; 粟超; 张宇; 李修银; 刘鹏
Original assignee: Xihua University
Current assignee: Xihua University
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-04-30
Anticipated expiration: 2040-12-16
Also published as: CN112718043B

Abstract

The invention discloses an impact isolation system in a rice hulling roller, which comprises a rice hulling rack, a fast roller shaft, a fast roller, a slow roller shaft and a slow roller, wherein the fast roller and the slow roller both comprise a base and a shaft disc, the shaft disc on the fast roller is arranged on the fast roller shaft, the shaft disc on the slow roller is arranged on the slow roller shaft, the base is provided with a first cylindrical hole, the cylindrical shaft disc is arranged in the first cylindrical hole and is in coaxial clearance fit with the first cylindrical hole, three impact isolators are arranged on the same sides of the base and the shaft disc, and the three impact isolators are in a regular triangle layout. In the impact isolation system, two liang of same head of impact isolator articulate the installation with the tail in every rice hulling roller, forms regular triangle layout, and rice hulling roller can bear certain impact force during rice hulling, provides the required extrusion of rice huller and frictional force, has ensured normal rice hulling, and rice hulling roller can produce each impact isolation effect simultaneously under the vibration impact, has weakened the impact force and has realized the impact vibration isolation to the transmission of rice hulling frame.

Description

Impact isolation system in rice hulling roller

Technical Field

The invention relates to the technical field of grain processing machinery equipment, in particular to an impact isolation system in a rice hulling roller.

Background

Rice huller is a step of hulling rice, and its machine is called rice huller. The rubber roller rice huller works by utilizing the principle of extruding, rubbing and tearing and hulling, extrusion, torsion and impact are carried out between rice and a rice hulling roller, impact vibration borne by the rubber roller is transmitted to a base structure and a transmission system through a shaft and a bearing, and plates, a shell, a pipeline and the like on the base structure can generate violent vibration due to the conduction of vibration and radiate stronger structural noise. The conventional method for installing the elastic pad is generally adopted to solve the problem that no actual device for damping and isolating vibration noise generated in rice hulling exists. Therefore, the rubber roller rice hulling process is often accompanied by great vibration and noise, which causes environmental pollution.

The existing isolation device can not play a good isolation effect on the impact vibration generated by rubber roll hulling, and the main reason is as follows: the impact generated in the rice hulling area during rice hulling is circumferential impact, the impact on the existing impact separator in a single direction is not applicable to the impact vibration generated during the operation of the rubber roller; and secondly, the rubber roll rotates at a high speed during rice hulling, the vibration frequency is higher, the vibration frequency of the fast roll is 975Hz, and the vibration frequency of the slow roll is 712.5 Hz. The existing impact isolator is mostly used for isolating impact during warship combat, the impact frequency is not very high, and the impact isolator is not suitable for the high-frequency impact of rice hulling.

Fig. 1 shows a chinese patent with patent number "201610165350.2" for single-ended bidirectional movement shock isolator of extension spring. In this patent, a connecting plate 72 is connected with a device 71 by a screw, one end of a connecting rod 73 is directly inserted into a corresponding hole in the connecting plate 72, the other end of the connecting rod 73 is inserted into a push rod 74, a movable plate a75 passes through the push rod 74 in the middle and is placed on the upper end surface of a sleeve 76, the other end of the push rod 74 is connected with a movable plate B78, a tension spring 77 is installed between the movable plate a75 and the movable plate B78, and the sleeve 76 is installed on a base 79 by a connecting bolt 80. The working principle of the impact isolation device is as follows: under the action of upward impact load, the working process of the single-end bidirectional movement impact isolation device of the tension spring is divided into four stages: the device 71 moves downwardly away from the equilibrium position to a lower extreme position, the device 71 returns from the lower extreme position to the equilibrium position, the device 71 moves upwardly from the equilibrium position to an upper extreme position, and the device 71 returns from the upper extreme position to the equilibrium position. The technical scheme has the defects that the technical scheme is used for isolating the impact vibration in the vertical upward (or along the axis of the device) direction, the rice huller has a rubbing and tearing effect formed by two rubber rollers with different rotating speeds, the impact vibration generated by the rice and the rubber rollers is periodic circumferential impact, the technical scheme does not solve the problem of the circumferential impact vibration and is not suitable for isolating the impact on the circumference of the rice hulling rubber roller rice hulling area.

A chinese invention patent entitled "a high precision impact isolator" is provided as shown in fig. 2 and is entitled "201510457940.8". In this patent, the impact isolator includes an upper base 81, a lower base 84, and a plurality of spherical joints 83 provided on the upper base 81 and the lower base 84, a hydraulic damping buffer rod is connected between two opposite spherical joints 83), a photoelectric emission unit 85 is provided on the upper base 81, and a photoelectric reception processing unit 86 corresponding to the photoelectric emission unit 85 is provided on the lower base 84. The shock energy in the shock absorbing process is stored and absorbed through the displacement deformability of 6 hydraulic damping buffer rods 82, the damping rods, an upper spring, a lower spring and a limiting mechanism are arranged in the hydraulic damping buffer rods 82, two ends of the hydraulic damping buffer rods 82 are connected with the spherical joints 83 through a thread structure, and the hydraulic damping buffer rods 82 are designed by adopting a built-in vibration isolation structure and are arranged in an up-and-down symmetrical mode, so that the shock absorbing and absorbing device has good shock resistance, can isolate strong shock transmitted from the outside, absorb and consume the energy transmitted to a system by the outside shock, reduce the vibration intensity of a load mounting base surface, buffer the influence of the strong shock from the outside on a mounting reference load, provide overload protection for the loaded inertial navigation, and simultaneously accurately measure the posture variation of the upper base and the lower base by adopting a photoelectric detection and digital processing method to compensate the posture variation angle of the shock isolator, the high-precision reset function of the impact isolator is realized. The technical scheme has the following disadvantages: although the isolator can accurately absorb impact energy in a precise posture, namely can better absorb the impact energy, the device outputs the change of the relative posture between the transmitting unit and the receiving and processing unit through photoelectric emission light, image processing, star point detection, target recognition, posture calculation, and the like, so that the acceptable impact frequency can be reduced in the processing process, because the device needs to be readjusted to receive impact after receiving one impact, and precision instruments (such as a photoelectric transmitting unit, a lens, a CCD detector and an image processing and calculating module) are arranged on the isolator, and the precision instruments of the device can be damaged for high-frequency impact vibration generated in the rice hulling process, so that the isolator cannot be normally used. In addition, although the device can accurately absorb impact energy in an accurate posture, the impact receiving direction still has a certain range, and impact on the circumference of a rice hulling area generated during rice hulling cannot be isolated. The technical scheme can not solve the problem of impact isolation of the rice hulling rubber roll.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides an impact isolation system in a rice hulling roller, and solves the problem of radial and circumferential impact vibration isolation of the rice hulling speed roller in a rice hulling area; still solved rice hulling speed high frequency impact isolation problem between the roller. Therefore, an impact isolation system in rice huller roller is provided, which can realize that the separator has radial and circumferential impact isolation capability, can be used for a rubber roller of a rice huller, and reduces the transmission and noise radiation of impact vibration to other connection structures.

The purpose of the invention is realized by the following technical scheme:

an impact isolation system in a rice hulling roller comprises a rice hulling machine frame, a fast roller shaft, a fast roller, a slow roller shaft and a slow roller, the fast roller is arranged on the fast roller shaft, the slow roller is arranged on the slow roller shaft, a gap is arranged between the fast roller and the slow roller, the fast roll shaft and the slow roll shaft are parallel to each other, one end of the fast roll shaft and one end of the slow roll shaft are both fixedly arranged on the rice hulling frame, the axle center of the fast roll shaft is arranged above the slow roll shaft in an inclined way, the fast roll and the slow roll both comprise a base and a shaft disc, the reel on the fast roller is arranged on the fast roller shaft, the reel on the slow roller is arranged on the slow roller shaft, a bottom plate on the base is provided with a first cylindrical hole, the cylindrical shaft disc is arranged in the first cylindrical hole and is in coaxial clearance fit with the first cylindrical hole, both sides of the bottom plate of the base are connected with both sides of the shaft disc through at least two impact isolators;

the impact isolator comprises a shock isolation cylinder, a pretightening nut, a spring retainer ring, a continuous pushing retainer ring, a limiting nut and a shock isolation rod, wherein one end of the shock isolation cylinder is connected with the base, the other end of the shock isolation cylinder is coaxially provided with a second cylindrical hole, one end of the shock isolation rod is connected with the base, the other end of the shock isolation rod is coaxially provided with a cylindrical push rod, the cylindrical push rod is matched with the second cylindrical hole, the pretightening nut is arranged on the outer surface of the shock isolation cylinder, the pretightening nut is in contact with one end of the spring which is sleeved on the shock isolation cylinder and is in a compressed state, the other end of the spring is in contact with the spring retainer ring sleeved on the shock isolation cylinder, the tail end of the shock isolation cylinder is provided with the limiting nut for preventing the spring retainer ring from falling off, the continuous pushing retainer ring is sleeved on the outer side of the limiting nut, and one end of, the other end of the continuous pushing check ring is connected with the cylindrical step on the plunger.

Furthermore, the same side of the base and the shaft disc is provided with three impact isolators, and the three impact isolators are in a regular triangle layout.

Further, the fast roller with the slow roller all still includes base bolt, base sleeve, nut, reel bolt, reel sleeve, be provided with the shaft shoulder on the base bolt, through the shaft shoulder with the nut is fixed the middle part of base bolt on the bottom plate of base, the both ends of base bolt are installed in proper order to the outside respectively the base sleeve with quilt behind the impact isolator the nut is fixed, the one end of reel bolt is passed through the nut is fixed on the reel, the other end of reel bolt install in proper order the reel sleeve with quilt behind the impact isolator the nut is fixed.

Furthermore, a third cylindrical hole matched with the base bolt is formed in the impact isolating cylinder, the other end of the base bolt is arranged in the third cylindrical hole, and a fourth cylindrical hole matched with the shaft disc bolt is formed in the impact isolating rod.

Furthermore, the fast roller and the slow roller both comprise rubber layers, the annular rubber layers are fixedly arranged on the outer surface of the base, and a gap is reserved between the rubber layers on the fast roller and the slow roller.

Further, a feeding roller and a feeding flowing plate are arranged on the upper side inside the rice hulling rack, the feeding flowing plate is arranged in an inclined mode, the feeding roller is arranged at the upper end of the feeding flowing plate, a feeding port is formed in the rice hulling rack and arranged above the feeding roller, and the lower end of the feeding flowing plate is close to a rice hulling working area of the fast roller and the slow roller.

Further, the lower side of the interior of the rice huller frame is provided with two obliquely arranged discharging flowing plates, the discharging flowing plate on the upper side is arranged below the fast roller and the slow roller, the discharging flowing plate on the lower side is arranged below the discharging flowing plates on the slow roller and the upper side, a discharging port is arranged on the output side of the discharging flowing plate on the lower side, and the discharging port is arranged at the bottom of the rice huller frame.

Further, the vibration frequency of the fast roller is 950-1000 Hz, and the vibration frequency of the slow roller is 700-730 Hz.

Further, the isolation flushing cylinder is in threaded connection with the limiting nut.

Further, the continuous pushing retainer ring is cylindrical and is in threaded connection with the cylindrical step on the plunger.

The invention has the beneficial effects that:

the invention provides an impact isolator, wherein every two impact isolators in each rice hulling roller are hinged with the same head and the same tail in pairs to form a regular triangle layout, the rice hulling rollers can bear certain impact force during rice hulling, extrusion and friction force required by rice hulling are provided, normal rice hulling is ensured, meanwhile, the rice hulling rollers can generate impact isolation action in all directions under the action of vibration impact, the transmission of the impact force to a rice hulling frame is weakened, and the impact vibration isolation is realized. This system has rice huller circumference, radial impact isolation effect, is applicable to the high frequency and assaults the isolation, reduces the noise that impact vibration produced to other connection structure transmission.

Drawings

FIG. 1 is a prior art shock isolation apparatus;

FIG. 2 is a prior art shock isolation apparatus;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic view of the impact isolator of the present invention;

FIG. 5 is a schematic view of the construction of the slow roll of the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

fig. 7 shows the simulation result of the impact isolation system in the rice hulling roll of the present invention.

In the figure, 1-rice huller frame, 2-fast roll shaft, 3-fast roll, 4-slow roll shaft, 5-slow roll, 6-impact isolator, 11-discharge flow plate, 12-feed roll, 13-feed flow plate, 51-rubber layer, 52-base, 53-base bolt, 54-base sleeve, 55-nut, 56-shaft disk bolt, 57-shaft disk, 58-shaft disk sleeve, 61-impact isolation cylinder, 62-pre-tightening nut, 63-spring, 64-spring retainer ring, 65-continuous pushing retainer ring, 66-limit nut, 67-impact isolation rod, 71-device, 72-connecting plate, 73-connecting rod, 74-pushing rod, 75-active plate A, 76-sleeve, 77-tension spring, 78-movable plate B, 79-base, 80-connecting bolt, 81-upper base, 82-hydraulic damping buffer rod, 83-spherical joint, 84-lower base, 85-photoelectric emission unit, and 86-photoelectric receiving and processing unit.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 3-7, the present invention provides a technical solution:

as shown in figure 3, the impact isolation system in the rice hulling roller comprises a rice hulling frame 1, a fast roller shaft 2, a fast roller 3, a slow roller shaft 4 and a slow roller 5, wherein the fast roller 3 is arranged on the fast roller shaft 2, the slow roller 5 is arranged on the slow roller shaft 4, a gap is formed between the fast roller 3 and the slow roller 5, the fast roller shaft 2 and the slow roller shaft 4 are parallel to each other, one end of the fast roller shaft 2 and one end of the slow roller shaft 4 are fixedly arranged on the rice hulling frame 1, the axle center of the fast roller shaft 2 is arranged above the slow roller shaft 4, the fast roller 3 and the slow roller 5 both comprise a base 52 and a shaft disc 57, the shaft disc 57 on the fast roller 3 is arranged on the fast roller shaft 2, the shaft disc 57 on the slow roller 5 is arranged on the slow roller shaft 4, a first cylindrical hole is arranged on the bottom plate of the base 52, the cylindrical shaft disc 57 is arranged in the first cylindrical hole and is in coaxial clearance fit with the first cylindrical hole, two sides of the bottom plate 52 and two sides of the shaft, the impact isolator 6 comprises an impact isolating cylinder 61, a pre-tightening nut 62 and a spring 63, the device comprises a spring retainer ring 64, a continuous pushing retainer ring 65, a limiting nut 66 and a plunger isolating 67, wherein one end of the plunger isolating 61 is connected with the base 52, the other end of the plunger isolating 61 is coaxially provided with a second cylindrical hole, one end of the plunger isolating 67 is connected with the base 52, the other end of the plunger isolating 67 is coaxially provided with a cylindrical push rod, the cylindrical push rod is matched with the second cylindrical hole, the outer surface of the plunger isolating 61 is provided with a pre-tightening nut 62, the pre-tightening nut 62 is in contact with one end of a spring 63 which is sleeved on the plunger isolating 61 and is in a compressed state, the other end of the spring 63 is in contact with a spring retainer ring 64 sleeved on the plunger isolating 61, the tail end of the plunger isolating 61 is provided with the limiting nut 66 for preventing the spring retainer ring 64 from falling off, the continuous pushing retainer ring 65 is sleeved on the outer side of the limiting nut 66, one end of the continuous pushing retainer ring 65 is. The impact isolating cylinder 61 is in threaded connection with the limit nut 66. The continuous pushing retainer ring 65 is cylindrical, and the continuous pushing retainer ring 65 is in threaded connection with a cylindrical step on the plunger 67. As shown in fig. 4, a third cylindrical hole is formed in the small end of the impact isolation cylinder 61, the large end of the impact isolation cylinder 61 is cylindrical, threads are formed in the surface of the large end of the impact isolation cylinder 61, a second cylindrical hole is formed in the center of the large end of the impact isolation cylinder 61, and the second cylindrical hole is called as the head end of the impact isolator 6; the pre-tightening nut 62 is installed on the surface of the impact isolating cylinder 61 through the large end surface of the impact isolating cylinder 61 in a threaded manner, the spring 63 and the spring retainer ring 64 are sleeved on the large end threaded surface of the impact isolating cylinder 61 in an empty manner, the spring 63 is located between the pre-tightening nut 62 and the spring retainer ring 64, the limiting nut 66 is installed on the large end surface of the impact isolating cylinder 61 through threads and is in contact with the end surface of the spring retainer ring 64, so that the spring 63 is compressed to have a certain pre-tightening force, one end of the impact isolating rod 67 is provided with a fourth cylindrical hole, the other end of the impact isolating rod 67 is provided with a cylindrical push rod, the middle of the cylindrical step is provided with a cylindrical step, the surface of the step is provided with threads, the fourth cylindrical hole on the impact isolating rod 67 is called as the tail part of the impact isolator 6, the continuous pushing retainer ring 65 is cylindrical, an inner hole is provided with threads, the continuous pushing retainer ring 65 is installed, when the impact isolator 6 is impact compressed, it may push the spring collar 64 to move and compress the spring 63. The spring 63 in the impact isolator 6 may be replaced by an elastic rubber.

In some embodiments, three shock isolators 6 are provided at the same end of the base 52 as the shaft disc 57, the three shock isolators 6 being in a regular triangular arrangement. As shown in fig. 3 and 5, the impact isolator 6 is mounted in the fast roll 3 and the slow roll 5 in the same manner, and the mounting of the impact isolator 6 in the slow roll 5 will be described below as an example. The slow roll 5 is internally provided with 6 impact isolators 6, the front side and the rear side of the slow roll 5 are respectively provided with 3 impact isolators 6, the two impact isolators 6 on the front side and the rear side are hinged with each other in a way that every two impact isolators are same in head and tail, the two impact isolators 6 are arranged on the slow roll 5 in a hinged mode, the 3 impact isolators 6 on each side form a regular triangle layout, namely, the head end of each impact isolator 6 on the same side is connected with each other to form a regular triangle, and the tail of each impact isolator 6 is arranged on the side line of the regular triangle. The 6 impact isolators 6 thus arranged constitute an impact isolating unit, which is provided in the invention in the fast roll 3 and in the slow roll 5, respectively.

In some embodiments, each of the fast roll 3 and the slow roll 5 further includes a base bolt 53, a base sleeve 54, a nut 55, a reel bolt 56, and a reel sleeve 58, a shoulder is disposed on the base bolt 53, the middle portion of the base bolt 53 is fixed on the bottom plate of the base 52 through the shoulder and the nut 55, two ends of the base bolt 53 are respectively and outwardly and sequentially mounted with the base sleeve 54 and the impact isolator 6 and then fixed by the nut 55, one end of the reel bolt 56 is fixed on the reel 57 through the nut 55, and the other end of the reel bolt 56 is sequentially mounted with the reel sleeve 58 and the impact isolator 6 and then fixed by the nut 55. The impact isolating cylinder 61 is provided with a third cylindrical hole matched with the base bolt 53, the other end of the base bolt 53 is arranged in the third cylindrical hole, and the impact isolating rod 67 is provided with a fourth cylindrical hole matched with the shaft disc bolt 56. The fast roller 3 and the slow roller 5 both further comprise rubber layers 51, the annular rubber layers 51 are fixedly arranged on the outer surface of the base 52, and a gap is reserved between the rubber layers 51 on the fast roller 3 and the rubber layers 51 on the slow roller 5. As shown in fig. 5 and fig. 6, the rubber layer 51 and the base 52 are both cylindrical, the rubber layer 51 is fixedly arranged on the cylindrical surface of the base 52, the center of the base plate of the base 52 is a circular through hole, 3 bolt connecting through holes are uniformly arranged on the base plate, a shaft shoulder is arranged on the base bolt 53, and the rubber layer is fixedly arranged on the base 52 through the shaft shoulder and a nut 55. A set of pedestal sleeve 54, the impact isolator 6 and a nut 55 are respectively installed on two sides of the pedestal bolt 53, wherein the head end of the impact isolator 6 is installed on the pedestal bolt 53, the pedestal sleeve 54 is used for adjusting the position of the impact isolator 6 on the pedestal bolt 53, and the nut 55 is used for locking the impact isolator 6. The shaft disc 57 appearance is circular, install on slow roller shaft 4, have certain clearance with between the circular through-hole at the bottom plate center of base 52, evenly set up 3 bolted connection through-holes on the shaft disc 57, shaft disc bolt 56 passes through nut 55 fixed mounting in the bolted connection hole of shaft disc 57, install respectively on two different shaft disc bolts 56 through shaft disc sleeve 58 and nut 55 with the afterbody of two impact isolator 6 of first installation, form the same first different tail mounting means of impact isolator 6, shaft disc sleeve 58 is used for adjusting the position of impact isolator 6 on shaft disc bolt 56, nut 55 is used for pinning impact isolator 6. According to the same head-end and different-end installation mode, the installation of the other 2 groups of impact isolators is completed, and finally, 3 impact isolators 6 are arranged on each side of the base plate of the base 52 and are in a regular triangle layout structure. The working principle is as follows: as shown in fig. 5, during rice hulling, the rubber layer 51 directly receives the impact of the grains, thereby transmitting to the base 52, the base 52 is not directly connected with the shaft disc 57 and has a certain gap, the base bolt 53 is connected with the base 52 through the nut 55, the rice hulling impact is transmitted from the base 52 to the base bolt 53, and then transmitted to the impact isolator 6 connected on the base bolt 53 with the head and the tail through the base bolt 53. As shown in fig. 5 and 6, for a single impact isolator 6, the rice hulling impact is transmitted to the head end of the impact isolator 6, namely, the small end of the impact isolation barrel 61 is impacted, the impact is transmitted to the spring 63 through the pre-tightening nut 62, if the spring 63 is compressed, the impact isolation barrel 61 generates displacement, the limit nut 66 moves along with the impact isolation barrel 61, the compression pre-tightening effect on the spring 63 is lost, the impact on the spring 63 can be continuously transmitted to the continuous pushing baffle ring 65 through the spring retainer ring 64, and then transmitted to the impact isolation rod 67, and through the tail connection of the impact isolator 6, the impact can be transmitted to the shaft disc bolt 56, and the impact can be transmitted to the slow roller shaft 4 and the rice huller frame 1 through the shaft disc 57. From the rice hulling impact transmission path, after the spring 63 is compressed due to impact, a part of impact vibration energy is absorbed by using the damping characteristic of the spring, so that the amplitude of the impact vibration is quickly attenuated, the impact is weakened and isolated, and the impact vibration which is finally transmitted to the rice hulling rack 1 is actually reduced. This damping effect of the individual impact isolators 6 is referred to herein as an impact isolation effect. In addition, the pre-tightening force is adjusted by rotating the pre-tightening nut 62 at different positions on the shock isolation cylinder 61, so that the impact of impact forces with different magnitudes can be isolated.

In some embodiments, a feeding roller 12 and a feeding dripping plate 13 are arranged on the upper side inside the rice hulling frame 1, the feeding dripping plate 13 is obliquely arranged, the feeding roller 12 is arranged at the upper end of the feeding dripping plate 13, a feeding port is arranged on the rice hulling frame 1 and is arranged above the feeding roller 12, and the lower end of the feeding dripping plate 13 is close to a rice hulling working area of the fast rollers 3 and the slow rollers 5. The inside downside of rice huller frame 1 is equipped with the ejection of compact that two slopes set up and trickles board 11, and the ejection of compact of upside trickles board 11 and sets up in

fast roller

3 and 5 below with slow roller, and the ejection of compact of downside trickles board 11 and sets up in the ejection of compact of slow roller 5 and upside and trickles the below of board 11, and the ejection of compact of downside trickles the output side of board 11 and is provided with the discharge gate, and the discharge gate setting is in the bottom of rice huller frame 1. The vibration frequency of the fast roller 3 is 950-1000 Hz, and the vibration frequency of the slow roller 5 is 700-730 Hz. The working principle is as follows: as shown in fig. 3, during rice hulling, feed roll 12 rotates and makes corn flow through the pay-off and trickle board 13 evenly get into the rice hulling workspace between fast roller 3 and the slow roller 5, because fast roller 3 and slow roller 5 have speed difference and rotation direction is opposite, corn receives the extrusion of two rollers and the opposite direction frictional force who produces by two roller speed differences, form the effect of tearing with the hands of corn, corn flows out through ejection of compact board 11 after rice hulling between two rollers, at rice hulling region, the clearance between two rollers is less, corn and two extrusion between rice hulling rollers, rub and tear effect and corn inflow-outflow, must form fast, the impact action of slow roller. The impact direction acts along the radial direction and the circumferential direction of the rice hulling roller, and the continuous impact frequency is higher, the vibration frequency of the fast roller is 975Hz, and the vibration frequency of the slow roller is 712.5 Hz.

For an impact isolation unit, the rice hulling impact is random for the rice hulling roller, generally speaking, the impact distribution of the rice hulling area is in the circumferential direction and the radial direction of the rice hulling roller, and the impact frequency is higher. Under the condition, because of the same-head different-tail connection and regular triangle layout structure of the 6 impact isolators 6 in the impact isolation unit, no matter the impact occurs at any position of the surface of the rice hulling roller, the 6 impact isolators 6 in the impact isolation unit can generate impact isolation effect with different degrees, so that the circumferential and radial high-frequency random vibration impact energy of the rice hulling roller is consumed, the impact vibration is isolated in all directions, and the impact vibration transmitted to the rice hulling rack 1 is greatly weakened. This vibration damping effect of the shock-insulating unit is referred to herein as an isotropic shock-insulating effect.

To this impact isolation system in rice hulling roller, during rice hulling, because the spring 63 compression has certain pretightning force, fast, slow roller can both bear certain impact force, provides the required extrusion of rice hulling and frictional force, has ensured normal rice hulling. Fast simultaneously, slow roller all can receive rice hulling impact effect at the rotation rice hulling in-process, and this kind of effect is mutual to two rice hulling rollers moreover, but the direction of this kind of random impact still takes place in rice hulling roller's circumference and radial. Because set up an impact isolation unit in fast roller 3 and the slow roller 5 respectively, consequently two rice huller rolls all can produce each direction and strike the isolation effect, have finally weakened the impact force and to rice huller frame 1 transmission, realize the impact vibration isolation, reduce the noise that the impact vibration produced to other connection structure transmissions.

FIG. 7 shows the results of simulation of the impact isolation effect of the present invention by ADAMS software. The force borne by the base 52 is taken as the exciting force, the transmission force borne by the shaft disc 57 is obtained, and the result shows that the transmission rate of the force is 49.5%, the transmission force curve after the isolation effect is obviously lower than the peak value of the exciting force, the effective duration of the transmission force in a single period is obviously longer and longer than the exciting effect, and the comparison between the exciting effect of high thinness and the exciting effect of short and fat transmission force shows that after the impact isolation effect of the impact isolation system in the rice hulling roller, the impact force transmitted to the surrounding connecting structure is obviously weakened, the transmission force of the system is more stable and uniform than the exciting force, the mutability of the transmission force is reduced, the influence on the transmission to the surrounding connecting piece is greatly reduced, and further, the vibration and the radiation noise of other easily influenced parts are effectively reduced.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an impact isolation system in rice huller roller, includes rice huller frame (1), fast roller axle (2), fast roller (3), slow roller axle (4) and slow roller (5), fast roller (3) set up on fast roller axle (2), slow roller (5) set up slow roller axle (4) are last, fast roller (3) with it is gapped between slow roller (5), fast roller axle (2) with slow roller axle (4) are parallel to each other, fast roller axle (2) with the one end of slow roller axle (4) is all fixed to be set up rice huller frame (1) is last, the axle center of fast roller axle (2) sets up the oblique top of slow roller axle (4), its characterized in that: the fast roll (3) and the slow roll (5) both comprise a base (52) and a shaft disc (57), the shaft disc (57) on the fast roll (3) is arranged on the fast roll shaft (2), the shaft disc (57) on the slow roll (5) is arranged on the slow roll shaft (4), a bottom plate of the base (52) is provided with a first cylindrical hole, the cylindrical shaft disc (57) is arranged in the first cylindrical hole and is in coaxial clearance fit with the first cylindrical hole, and both sides of the bottom plate of the base (52) are connected with both sides of the shaft disc (57) through at least two impact isolators (6);

the impact isolator (6) comprises a shock isolation cylinder (61), a pre-tightening nut (62), a spring (63), a spring retainer ring (64), a continuous pushing retainer ring (65), a limiting nut (66) and a shock isolation rod (67), wherein one end of the shock isolation cylinder (61) is connected with the base (52), the other end of the shock isolation cylinder (61) is coaxially provided with a second cylindrical hole, one end of the shock isolation rod (67) is connected with the base (52), the other end of the shock isolation rod (67) is coaxially provided with a cylindrical push rod, the cylindrical push rod is matched with the second cylindrical hole, the pre-tightening nut (62) is arranged on the outer surface of the shock isolation cylinder (61), the pre-tightening nut (62) is in contact with one end of the spring (63) which is sleeved on the shock isolation cylinder (61) and is in a compression state, and the other end of the spring (63) is in contact with the spring retainer ring (64) sleeved on the shock isolation cylinder (61), the tail end of the impact isolating cylinder (61) is provided with the limiting nut (66) for preventing the spring retainer ring (64) from falling off, the continuous pushing retainer ring (65) is sleeved outside the limiting nut (66), one end of the continuous pushing retainer ring is in contact with the spring retainer ring (64), and the other end of the continuous pushing retainer ring (65) is connected with the cylindrical step on the impact isolating rod (67).

2. The impact isolation system in rice hulling roller as claimed in claim 1, wherein: the shock isolators (6) are arranged on the same side of the base (52) and the shaft disc (57), and the shock isolators (6) are in regular triangle arrangement.

3. The impact isolation system in rice hulling roller as claimed in claim 1 or 2, wherein: fast roller (3) with slow roller (5) all still include base bolt (53), base sleeve (54), nut (55), reel bolt (56), reel sleeve (58), be provided with the shaft shoulder on base bolt (53), through the shaft shoulder with the middle part of base bolt (53) is fixed in nut (55) on the bottom plate of base (52), the both ends of base bolt (53) are installed respectively to the outside in proper order base sleeve (54) with strike behind isolator (6) quilt nut (55) are fixed, the one end of reel bolt (56) is passed through nut (55) are fixed on reel (57), reel sleeve (58) are installed in proper order to the other end of reel bolt (56) with strike behind isolator (6) quilt nut (55) are fixed.

4. The impact isolation system in rice hulling roller as claimed in claim 3, wherein: the impact isolating cylinder (61) is provided with a third cylindrical hole matched with the base bolt (53), the other end of the base bolt (53) is arranged in the third cylindrical hole, and the impact isolating rod (67) is provided with a fourth cylindrical hole matched with the shaft disc bolt (56).

5. The impact isolation system in rice hulling roller as claimed in claim 1 or 2, wherein: the fast roller (3) and the slow roller (5) both comprise rubber layers (51), the annular rubber layers (51) are fixedly arranged on the outer surface of the base (52), and a gap is reserved between the rubber layers (51) on the fast roller (3) and the rubber layers (51) on the slow roller (5).

6. The impact isolation system in rice hulling roller as claimed in claim 1, wherein: the rice huller is characterized in that a feeding roller (12) and a feeding flowing plate (13) are arranged on the upper side inside the rice huller frame (1), the feeding flowing plate (13) is obliquely arranged, the feeding roller (12) is arranged at the upper end of the feeding flowing plate (13), a feeding port is arranged on the rice huller frame (1), the feeding port is arranged above the feeding roller (12), and the lower end of the feeding flowing plate (13) is close to a rice hulling working area of the fast roller (3) and the slow roller (5).

7. The impact isolation system in rice hulling roller as claimed in claim 1, wherein: rice huller millet frame (1) inside downside is equipped with the ejection of compact of two slopes settings and trickles board (11), the upside the ejection of compact trickles board (11) and sets up fast roller (3) with roller (5) below slowly, the downside the ejection of compact trickles board (11) and sets up slow roller (5) and upside the below of ejection of compact trickling board (11), the downside the output side of ejection of compact trickling board (11) is provided with the discharge gate, the discharge gate sets up the bottom of rice huller frame (1).

8. The impact isolation system in rice hulling roller as claimed in claim 1, wherein: the vibration frequency of the fast roller (3) is 950-1000 Hz, and the vibration frequency of the slow roller (5) is 700-730 Hz.

9. The impact isolation system in rice hulling roller as claimed in claim 1, wherein: the flushing isolating cylinder (61) is in threaded connection with the limiting nut (66).

10. The impact isolation system in rice hulling roller as claimed in claim 1, wherein: the continuous pushing check ring (65) is cylindrical, and the continuous pushing check ring (65) is in threaded connection with a cylindrical step on the plunger (67).