CN205030168U - Prevent thresher of straw bonding - Google Patents

Abstract

The utility model discloses a prevent thresher of straw bonding, pivot and coaxial being located that cylinder, drive break away from the cylinder that break away from including quick -witted case, quick -witted incasement breaks away from cylinder outlying screen cloth, the screen cloth is the arc and surrounds to the latter half of major general threshing cylinder, still includes to carry out the knocking device that beats to the screen cloth, knocking device includes that first, the second of locating the screen cloth outside along pivot vertical central plane symmetry strike the pole and the transmission of the radial reciprocating motion of pole in order to strike the screen cloth is strikeed in the drive. First, second strikes pole reciprocating motion and strikes the screen cloth from the outside to the straw on the screen cloth of make bonding thresh under the screen mesh vibration effect screen cloth and drop on the screen cloth on, and then avoid screen mesh blockage.

Description

The thresher that anti-straw is bonding

Technical field

The utility model relates to agricultural mechanical field, the thresher that particularly a kind of anti-straw is bonding.

Background technology

Rice-wheat thresher cleans the compositions such as parts, seed output block, electromotor primarily of cabinet, screen cloth, threshing cylinder, blower fan.During rice-wheat thresher work; by artificial hand-held rice handle; threshing cylinder spike of rice being fed High Rotation Speed carries out threshing; grain spills from the screen cloth below threshing cylinder; enter blower fan inclined ramp to glide; blower fan air blast is up through blower fan inclined ramp, and air blast flow velocity just can blow out through blower fan the impurity such as lightweight straw from screen cloth, and grain falls from screen cloth and leaves thresher from grain blow tank simultaneously.Problems existing is, straw relies on the wind-force of blower fan to shift out from screen cloth, and the straw that straw is particularly moist is easily bonded on screen cloth, and cause screen cloth to block, grain cannot normally spill from screen cloth, and straw also cannot be blown out cabinet by blower fan.

Utility model content

In view of this, the technical problems to be solved in the utility model is the thresher providing a kind of anti-straw bonding, and straw can be avoided to block screen cloth.

The thresher that anti-straw of the present utility model is bonding; comprise the detachment roller in cabinet, cabinet, drive the rotating shaft of detachment roller and be coaxially positioned at the screen cloth of detachment roller periphery; curved and the latter half to major general's threshing cylinder of described screen cloth is surrounded; also comprise the knocking device that screen cloth is knocked, described knocking device comprise along the vertical median plane of rotating shaft be symmetrically set in outside screen cloth first, second knock bar and drive and knock bar radial direction and move back and forth with the transmission device knocking screen cloth.

Further, described transmission device comprises first, second toggle, first, second toggle described comprises first, second crank and first, second connecting rod respectively, first, second crank described is all placed in rotating shaft, and it is hinged that bar is knocked with first, second crank and first, second respectively in the two ends of first, second connecting rod described.

Further, the projection of first, second toggle described on rotating shaft end face is symmetrical along the vertical median plane of rotating shaft.

The beneficial effects of the utility model: the thresher that anti-straw of the present utility model is bonding; comprise the detachment roller in cabinet, cabinet, drive the rotating shaft of detachment roller and be coaxially positioned at the screen cloth of detachment roller periphery; curved and the latter half to major general's threshing cylinder of described screen cloth is surrounded; also comprise the knocking device that screen cloth is knocked, described knocking device comprise along the vertical median plane of rotating shaft be symmetrically set in outside screen cloth first, second knock bar and drive and knock bar radial direction and move back and forth with the transmission device knocking screen cloth.First, second knocks bar and moves back and forth and knock screen cloth from outside, thus the straw making to be bonded on screen cloth threshing screen cloth dropping on screen cloth under screen cloth effect of vibration, and then avoid screen cloth to block.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further described:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1.

Embodiment

Below with reference to accompanying drawing, the utility model is described in detail, as shown in the figure: the thresher that the anti-straw of the present embodiment is bonding, comprise cabinet 1, detachment roller 2 in cabinet, drive the rotating shaft 3 of detachment roller and be coaxially positioned at the screen cloth 4 of detachment roller periphery, curved and the latter half to major general's threshing cylinder of described screen cloth is surrounded, also comprise the knocking device that screen cloth 4 is knocked, described knocking device comprises and is symmetrically set in first outside screen cloth along the vertical median plane of rotating shaft, second knocks bar 5, 6 knock the reciprocating motion of bar radial direction with the transmission device knocking screen cloth with driving.Frame has first, second elongated hole knocking the setting of bar 5,6 moving direction along first, second, first, second knocks bar through first, second elongated hole, and reciprocating linear moves under the restriction of first, second elongated hole.First, second knocks bar 5,6 and moves back and forth on cabinet and knock screen cloth 4 from outside, thus the straw making to be bonded on screen cloth 4 threshing screen cloth 4 dropping on screen cloth 4 under screen cloth 4 effect of vibration, and then avoid screen cloth to block.

As the further improvement of technique scheme, described transmission device comprises first, second toggle 7,8, first, second toggle 7,8 described comprises first, second crank 71,81 and first, second connecting rod 72,82 respectively, first, second crank 71,81 described is all placed in rotating shaft 3, and bar 5,6 hinged is knocked at the two ends of first, second connecting rod 72,82 described respectively with first, second crank 71,81 and first, second.First, second crank 71,81 rotates with rotating shaft 3, and drives first, second to knock bar 5,6 to move back and forth under the effect of first, second connecting rod 72,82, and by the rotating shaft 3 driving crank linkage 7,8 of threshing cylinder 2, without the need to volume transmission, structure is simple.

As the further improvement of technique scheme, first, second toggle 7,8 projection on rotating shaft 3 end face described is symmetrical along the vertical median plane of rotating shaft 3.As shown in Figure 1, 2, first, second toggle 7,8 staggers in the axis of rotating shaft, then symmetrical on rotating shaft horizontal radial direction, during the benefit arranged like this, first the length shapes etc. of first, second toggle 7,8 is completely the same, has interchangeability; Secondly, as shown in Figure 1, when rotating shaft 3 is by when rotating clockwise, first knocks bar 5 away from screen cloth 4, second knocks bar 6 then near screen cloth 4, and that is first, second knocks bar 5,6 for periodically alternately to knock screen cloth 4, alternately knocks screen cloth 4 and both ensure that screen cloth both sides all can be subject to knocking turn avoid and avoid screen cloth 4 both sides simultaneously stressed and cause screen cloth 4 to be out of shape, periodically knock screen cloth 4 and ensure that the uniformity that screen cloth 4 is stressed, avoid strain.

What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (3)

1. the thresher that an anti-straw is bonding; comprise the detachment roller (2) in cabinet (1), cabinet, drive the rotating shaft (3) of detachment roller and be coaxially positioned at the screen cloth (4) of detachment roller periphery; curved and the latter half to major general's threshing cylinder of described screen cloth is surrounded; it is characterized in that: also comprise the knocking device that screen cloth (4) is knocked, described knocking device comprise along the vertical median plane of rotating shaft be symmetrically set in outside screen cloth first, second knock bar (5,6) and drive and knock bar radial direction and move back and forth with the transmission device knocking screen cloth.

2. the thresher that anti-straw according to claim 1 is bonding; it is characterized in that: described transmission device comprises first, second toggle (7,8); first, second toggle described (7,8) comprises first, second crank (71,81) and first, second connecting rod (72,82) respectively; first, second crank described (71,81) is all placed in rotating shaft (3), and it is hinged that bar (5,6) is knocked with first, second crank (71,81) and first, second respectively in the two ends of first, second connecting rod described (72,82).

3. the thresher that anti-straw according to claim 2 is bonding, is characterized in that: the projection of first, second toggle described (7,8) on rotating shaft (3) end face is symmetrical along the vertical median plane of rotating shaft (3).