CN2935774Y

CN2935774Y - Vibrative sieve for rice and wheat thresher

Info

Publication number: CN2935774Y
Application number: CN 200620034708
Authority: CN
Inventors: 何义平
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-23
Filing date: 2006-06-23
Publication date: 2007-08-22
Anticipated expiration: 2016-06-23

Abstract

The utility model provides a vibration sieve on a rice and wheat thresher that is comprised of a baffle, a sieve net, a sieve seat, a material catching groove, and a sieve frame. The sieve net is fixed on the sieve frame; the material catching groove is fixed under the sieve seat; the sieve seat is movably provided with a brace; the middle of the brace is rotatablely fixed on the sieve frame; one end of one or two flexible supporting block is fixed on the sieve frame, while the other end is fixed on the sieve seat; and the two ends of the brace are respectively provided with a weight block. The utility model is characterized in stable operation, low noise, little vibration, little failure, high efficiency, low cost, long service life, high threshing efficiency, and convenient utilization, and is wildly applied in threshing of rice, wheat, beans, and crops.

Description

The rice-wheat thresher vibratory sieve

Technical field

The utility model relates to a kind of rice-wheat thresher, relates in particular to a kind of vibratory sieve of rice-wheat thresher.

Background technology

The chaff slag that existing rice-wheat thresher is got rid of interrupts fringe, fringe grain content is more, and disposable threshing performance is low.In order to guarantee threshing performance, usually a vibrating screen device is installed at the standing grain slag row mouthful place of rice-wheat thresher.This device need be installed an eccentric cam on drum shaft, rotating band moving cam connecting rod by eccentric cam moves back and forth vibratory sieve on turning rolls, the fringe grain in the standing grain slag leaks down by the mesh of vibratory sieve, reach the purpose of secondary separation, improved threshing performance.But the eccentric cam volume in this vibrating screen device is big, and eccentric moment is big, causes the vibratory sieve high vibration, noise reaches more than 90 decibels, and because eccentric cam, connecting rod, turning rolls and screen bed base are to be rigidly connected, easy part of damage, the vibratory sieve fault is many, the life-span short.

Summary of the invention

The purpose of this utility model provides a kind of threshing performance height, vibration is little, noise is low, fault is few, the rice-wheat thresher vibratory sieve of long service life.

The technical solution of the utility model is to realize like this.

A kind of rice-wheat thresher vibratory sieve; comprise baffle plate, screen cloth, sieve seat, the groove that connects material, screen frame (unit); screen cloth is fixed on the screen frame (unit); the groove that connects material is fixed on below the sieve seat 5; the both sides of described sieve seat turn fixes a bent axle; the top of bent axle is rotatably mounted on the screen frame (unit), and the left end of screen frame (unit) is connected by the left end of jockey with the sieve seat.

Described jockey is a kind of resilient support block, and an end of resilient support block is fixed on the screen frame (unit), and the other end is fixed on the sieve seat; The two ends of described bent axle are respectively arranged with balancing weight.

A bent axle is fixed on the both sides of the utility model sieve seat rotationally, and the top of bent axle is rotatably mounted on the screen frame (unit), and the screen cloth that the rotation of bent axle is driven on the screen frame (unit) moves back and forth and up-down vibration.Since bent axle in light weight, eccentric moment is little, so the vibration of vibratory sieve is little, noise is low, and links to each other with one to two resilient support block and screen frame (unit) and sieve, makes the hard connection between the parts become the elasticity connection.And be respectively arranged with balancing weight at the two ends of bent axle, and with the eccentric moment of balance crankshaft and shaker basket, further having reduced vibration, the complete machine noise is lower than 80 decibels, has improved the service life of vibratory sieve, has reduced cost.

Description of drawings

Fig. 1 is the main cutaway view of the utility model rice-wheat thresher vibratory sieve;

Fig. 2 is the cutaway view of Fig. 1 along the A-A line;

Fig. 3 is the vertical view of Fig. 1.

Be labeled as among the figure: the 1-right baffle-plate; the 2-screen cloth; the 3-bolt; the 4-resilient support block; 5-sieves seat; the 6-groove that connects material; 7-regulates bolt; the 8-screen frame (unit); the 9-connecting bolt; the 10-top chock; the 11-step; the 12-pad; the 13-rolling bearing; the 14-bent axle; the 15-collar; the 16-bolt bush; the 17-slag-drip opening; 18-thresher frame; the 19-connecting bolt; 20-thresher receiving hopper; the 21-threshing cylinder; the right baffle plate of 22-; the 23-balancing weight; the 24-drum pulley; the 25-crankshaft bearing seat; 26-bent axle rolling bearing; the 27-crank pulley; the 28-V-belt; the 29-belt pulley; 30-balancing weight bolt; the 31-set bolt.

Embodiment

Further describe the utility model with reference to the accompanying drawings.

Comprise right baffle-plate 1, right baffle plate 22, screen cloth 2, sieve seat 5, the groove 6 that connects material, screen frame (unit) 8 at Fig. 1 to rice-wheat thresher vibratory sieve shown in Figure 3; screen cloth 2 is fixed on the screen frame (unit) 8; the groove 6 that connects material is fixed on below the sieve seat 5; sieve seat 5 usefulness set bolts 31 are fixed on the thresher frame 18, and are corresponding with thresher slag-drip opening 17.Bent axle 14 rotatably is fixed on the both sides of sieve seat 5 with crankshaft bearing seat 25, bent axle rolling bearing 26, rolling bearing 13 of middle part cover of bent axle 14, encase with top chock 10 and step 11 outer ring, be fixed on the screen frame (unit) 8 with the connecting bolt 9 that is with bolt bush 16 again rolling bearing 13.Inner ring both sides with rolling bearing 13 on bent axle 14 are shaped on groove, are provided with collar 15 in it, move axially on bent axle 14 to prevent rolling bearing 13.Top chock 10 is provided with the edge, and its effect one is to encase rolling bearing 13 to enter to prevent dust, and the 2nd, fixedly the position of screen frame (unit) 8 on bent axle 14 is provided with a pad 12 in the outer ring of rolling bearing 13, to reduce vibration, to alleviate and impact.The left end of screen frame (unit) 8 is fixed on the left end that sieves seat 5 with jockey, and in order to reduce vibration, described jockey adopts resilient support block 4, as shown in Figure 1.One end of resilient support block 4 is fixed on the screen frame (unit) 8 with bolt 3, and the other end is fixed on the sieve seat 5 with regulating bolt 7, is provided with adjustment hole with the relevant position of regulating bolt 7 on the sieve seat 5, to regulate the angle of inclination of screen frame (unit) 8 and screen cloth 2.But 4 one of elastic supporting blocks, also polylith, elastic supporting block 4 is preferably made by rubber for tire.As Fig. 2, for balance crankshaft 14 and shaker basket 8 eccentric moments, reduce the vibration of vibratory sieve, with balancing weight bolt 30 balancing weight 23 is fixed in the above respectively at the two ends of bent axle 14.One end of bent axle 14 is provided with crank pulley 27, crank pulley 27 links to each other with duplex belt pulley 29 usefulness V-belts 28 on the drum pulley 24, then the gearratio between drum pulley 24 and the crank pulley 27 can be controlled, to regulate the vibration frequency of screen cloth 2.Can make one with crank pulley 27 with the balancing weight of crank pulley 27 1 ends, to reduce processing and installation cost.

During work; prime mover drives threshing cylinder 21 rotations; drum pulley 24,29 drives crank pulley 27 rotations by V-belt 28; therefore; the rotation of bent axle 14 then drives screen frame (unit) 8 and screen cloth 2 works reciprocally swinging up and down; make the cataphracted screen cloth of getting rid of from thresher slag-drip opening 17 2 of standing grain slag process, particle wherein falls into the groove 6 that connects material through screen cloth 2, and the groove 6 that connects material communicates with thresher receiving hopper 20.

The utility model is not limited to above-mentioned embodiment; its screen frame (unit) 8 and sieve seat with between jockey also but axial pin type or rolling wheel type etc., every bent axle 14 that utilizes all drops within the protection domain of the present utility model as the sheller vibrating screen of power and moving component.

Claims

1, a kind of rice-wheat thresher vibratory sieve; comprise baffle plate (1,22), screen cloth (2), sieve seat (5), the groove that connects material (6), screen frame (unit) (8); screen cloth (2) is fixed on the screen frame (unit) (8); the groove (6) that connects material is fixed on below the sieve seat 5; it is characterized in that: fix a bent axle (14) rotationally on the described sieve seat (5); the middle part of bent axle (14) is rotatably mounted on the screen frame (unit) (8), and the left end of screen frame (unit) (8) is connected by the left end of jockey with sieve seat (5).

2, rice-wheat thresher vibratory sieve according to claim 1 is characterized in that: described jockey is a kind of resilient support block (4), and an end of resilient support block (4) is fixed on the screen frame (unit) (8), and the other end is fixed on the sieve seat (5).

3, rice-wheat thresher vibratory sieve according to claim 2 is characterized in that: the two ends of described bent axle (14) are respectively arranged with balancing weight (23).