CN105340465A - Combine harvester - Google Patents

Abstract

The invention provides a combine harvester capable of easily and efficiently cleaning and overhauling a bearing network. The combine harvester includes a thresher (4) including a threshing portion which throws harvested straws entirely into a threshing chamber and uses free rotation to drive a threshing drum for threshing, and a filtering portion that filters the threshed straws from the threshing chamber via a freely-swinging filtering device. Besides, the combine harvester also includes a pivoting support mechanism (81) which forms an upper transverse sidewall portion (71a) of the threshing chamber of the thresher (4) by supporting in a manner of freely swinging, opening and closing, and a loading/unloading mechanism (80) which supports the upper transverse sidewall portion (71a) in a manner of freely loading and unloading.

Description

Combine

The application is the divisional application of earlier application (applying date: on July 30th, 2008, application number: 200810131191.X, denomination of invention: combine).

Technical field

The present invention relates to a kind of combine; it has thresher, and this thresher is equipped with to be put into whole for the straw of harvesting in threshing chamber and the screening plant that freely swings of the threshing portion and utilizing utilizing the threshing cylinder rotating freely driving to carry out threshing process to carry out the screening unit of Screening Treatment to the threshing handled thing from above-mentioned threshing chamber.

Background technology

In above-mentioned combine, as the grain header that can open threshing chamber, there is the grain header such as described in Japanese Unexamined Patent Publication 6-253657 publication (0010 section, Fig. 3,4) (hereinafter referred to as " patent document 1 ") in the past.

In the combine described in patent document 1, the top board of threshing chamber openedly and closedly can be installed around fore-and-aft direction axle center.

Although make threshing chamber to open by adopting above-mentioned prior art, existing problems in the cleaning accepting net and maintenance.

That is, in employing prior art under making the on limits situation of threshing chamber, although can threshing chamber be opened and make hand or cleaning device enter into threshing cylinder, but, hand or cleaning device but can not arrive undertaking net, thus in order to carry out cleaning and the maintenance of accepting net, need undertaking net to pull out from threshing chamber opening.

Summary of the invention

A kind of can easily carrying out efficiently is the object of the present invention is to provide to accept the cleaning of net and the combine of upkeep operation.

Feature structure of the present invention is; combine has thresher; this thresher has to be put into threshing chamber by the entirety of harvesting straw and utilizes the threshing cylinder rotating freely driving carry out the threshing portion of threshing process and by the screening plant that freely swings, the threshing handled thing from above-mentioned threshing chamber carried out to the screening unit of Screening Treatment; wherein, have and support the Shu Zhi mechanism of the upper cross side wall portion of the above-mentioned threshing chamber forming above-mentioned thresher in the mode of the opening and closing that can freely swing and support the charging crane of above-mentioned upper cross side wall portion in the mode that can freely load and unload.

According to this structure, put cross side wall portion by swinging open or unloaded, can to accept wire side to open lateral sides from threshing chamber to the state of opening, thus can carry out cleaning and overhauling accepting under the state that net still be installed on threshing chamber.

In addition, according to the situation of the scale of cleaning and overhaul and instrument etc., sometimes do not unload lateral sidewalls and only swing open, sometimes then upper cross side wall portion can be unloaded to prevent it from becoming encumbrance, operation is easily carried out.

Therefore, will not accept net and take out the cleaning and upkeep operation that can easily and efficiently carry out accepting net from threshing chamber.In addition, depending on concrete condition, also upper cross side wall portion can be unloaded to prevent it from becoming encumbrance, also can carry out operation efficiently from this point of view.

In said structure, preferably in the lower lateral sidewalls portion of above-mentioned screening unit forming above-mentioned thresher, be provided with the cereal sieve handling window of the cereal sieve putting into and take out above-mentioned screening plant.

According to this structure, can handling window be sieved take out and put into cereal sieve by cereal thus change.

Therefore, in the situations such as the grain species change of gathering in, without the need to carrying out the work of the entirety of oscillating riddle screening device being taken off from screening unit, cereal sieve can be replaced by the different cereal sieve of mesh, thus suitable Screening Treatment can be carried out like a cork.

In said structure, preferably there is the Shu Zhi mechanism of the top board supporting the above-mentioned threshing chamber forming above-mentioned thresher in the mode of the opening and closing that can freely swing.

According to this structure, by swinging open caving plate, just can open threshing chamber top and undertaking net is taken out from threshing chamber.

Therefore, in the situations such as the grain species change of gathering in, undertaking net can be replaced by the different undertaking net of mesh, thus suitable threshing process can be carried out.

In said structure; preferably have and send dirt valve; also there is stiffener; the described dirt valve that send is connected to the inner surface side of top board of the above-mentioned threshing chamber forming above-mentioned thresher along the arrangement of threshing cylinder axis of rotation direction, described stiffener with above-mentioned multiple outer surface side sending dirt valve mode fastening to be altogether connected to above-mentioned top board.

According to this structure, stiffener can be utilized to improve support strength, to utilize top board to prop up support sending dirt valve securely.

Therefore, even if sending large counter-force dirt valve acted on from threshing handled thing, top board also can be utilized to prop up support sending dirt valve securely, thus can utilize and send dirt valve to carry out high-precision guide of flow to threshing handled thing.And, just can realize by means of only arranging the such simple structure of stiffener, thus with utilize slab to form compared with top board etc., can obtain at an easy rate.

In addition, in said structure, preferably, reaping part is arranged on for the rotating drum rotating freely driving held together by upright straw rake to reaping apparatus, be arranged in the tooth on above-mentioned rotating drum with arranging along rotating drum axis of rotation direction, the side beam strength of tooth being positioned at the horizontal side of rotating drum is set as, is greater than the inner side beam strength of tooth be positioned at inside rotating drum.

In the past, there is the structure that all teeth arranged along rotating drum axis of rotation direction have same bending strength, but, in the combine adopting the technology relevant to rotating drum in the past, threshing can be produced or harrow not enough situation.

That is, in the horizontal side in the rotating drum axis of rotation direction of rotating drum, the upright straw of sometimes not gathering in soil is entangled with and enters into grain header together with harvesting object straw.If the side beam strength of tooth being positioned at the horizontal side of rotating drum is little, then side tooth can be out of shape because of the powerful counter-force from straw, thus the rake of generation side tooth to straw holds together bad problem.Therefore, in order to make the rake of side tooth hold together bad be difficult to occur, side beam strength of tooth must be strengthened, carry out rake strong to make side tooth and hold together.Like this, the bending strength that the inner tines inside the rotating drum axis of rotation direction being positioned at rotating drum has also becomes large.And in fact inner tines is that the harvesting object straw of being entangled with the upright straw of not gathering in soil acts on and can not be subject to counter-force large as the tooth of side, however, still the powerful rake that can not occur because of the flexure caused by counter-force is applied with to straw and holds together effect.As a result, in the inner side of rotating drum, different according to the kind of straw, easily there is the problem of threshing.

Therefore, by adopting this structure, the side tooth that the rake carrying out upright straw in the horizontal side of rotating drum holds together has the bending strength larger than inner tines, even if thus counter-force from straw is large, be also difficult to deform and powerful rake can be carried out hold together effect.

On the other hand, the inner tines that the rake carrying out upright straw in the inner side of rotating drum holds together has the bending strength less than side tooth, thus when being subject to the large counter-force from straw, easily bending and mildly carry out rake to straw and hold together effect.

Therefore, it is possible to hold together at the rake of the straw being difficult to occur to carry out under rake holds together the kilter of deficiency or threshing being realized by rotating drum to reaping apparatus, straw can be made swimmingly to flow and high-efficient homework, and can grain loss be prevented.

In said structure, preferably, above-mentioned inner tines is shaped to, and makes the end side of inner tines than the end side of above-mentioned side tooth more by rotating drum outer circumferential side.

According to this structure, even if make rotating drum decline to carry out acting in the position as far as possible near ground and cause inner tines ground connection, due to the end side of inner tines than the end side of side tooth more by rotating drum outer circumferential side, so toe joint ground, side also easily can be avoided.Inner tines has less bending strength than side tooth, thus easilier produces elastic deformation because of ground connection, is difficult to deform or damaged.

Even if therefore, it is possible to obtain rotating drum excessive descent and ground connection occurs, be also difficult to the ground connection because of inner tines or side tooth and deform or the combine of excellent durability of breakage.

In said structure, preferably the development length that Chi Congchi support portion, above-mentioned side extends is set as, is shorter than the development length that above-mentioned inner tines extends from tooth support portion.

According to this structure, even if make rotating drum decline to carry out acting in the position as far as possible near ground and cause inner tines ground connection, the development length extended from tooth support portion than inner tines due to the development length of Chi Congchi support portion, side extension is short, thus easily avoids the ground connection of side tooth.Inner tines has less bending strength than side tooth, thus easilier produces elastic deformation because of ground connection, is difficult to deform or damaged.

Even if therefore, it is possible to obtain rotating drum excessive descent and ground connection occurs, be also difficult to the ground connection because of inner tines or side tooth and deform or the combine of excellent durability of breakage.

In said structure, in a pair preferably adjacent in the rotating drum direction of rotation of above-mentioned rotating drum tooth support portion, the inner tines group with multiple above-mentioned inner tines supported by a tooth support portion and the inner tines group with multiple above-mentioned inner tines supported by another tooth support portion, rotating drum axis of rotation direction configures to staggered positions.

According to this structure, can the installation interval of the inner tines on each tooth support portion be set greatly, reduce the quantity of the inner tines that rotating drum has, so arrange number from inner tines, can obtain at an easy rate, meanwhile, the rake that rotating drum can also be utilized to carry out straw accurately holds together.

That is, the inner tines on a tooth support portion each other with the inner tines on another tooth support portion along rotating drum circumferential array.Thus, can the interval of the inner tines on each tooth support portion be set greatly, reduce the quantity of the inner tines be arranged on each tooth support portion, result, even if the inner tines that there is the tooth support portion be positioned at below arrival rotating drum, each other and not by the upright straw of the inner tines locking be positioned on this tooth support portion, also can make the inner tines of the next tooth support portion arrived engage this upright straw and be harrowed in reaping apparatus.

Accompanying drawing explanation

Fig. 1 is the left side view of combine entirety;

Fig. 2 is the right side view of combine entirety;

Fig. 3 is the vertical view of combine entirety;

Fig. 4 is the longitudinal cross-sectional side view of thresher;

Fig. 5 is the cross-sectional front view of thresher;

Fig. 6 is the vertical profile rearview of secondary feeding back device;

Fig. 7 is the end view of secondary feeding back device;

Fig. 8 is the stereogram under the open mode of upper cross side wall portion;

Fig. 9 (A) be close close lateral sidewalls portion state under vertical view, Fig. 9 (B) is the vertical view under the swing open state of upper cross side wall portion;

Figure 10 is the end view of charging crane and Shu Zhi mechanism;

Figure 11 is the rearview of charging crane and Shu Zhi mechanism;

Figure 12 is the vertical view of locking mechanism;

Figure 13 is the front view of locking mechanism;

Figure 14 is the end view of the cereal sieve handling window department of assembly of outside lateral sidewalls;

Figure 15 is the vertical view of top board;

Figure 16 is the cutaway view of the stiffener department of assembly of top board;

Figure 17 is the left side view of the combine entirety of the second embodiment;

Figure 18 is the right side view of the combine entirety of the second embodiment;

Figure 19 is the vertical view of the combine entirety of the second embodiment;

Figure 20 is the end view of the rotating drum department of assembly of reaping part;

Figure 21 is the end view of rotating drum;

Figure 22 is the vertical view of rotating drum;

Figure 23 is the front view of the horizontal end side of rotating drum;

Figure 24 is the front view of laterally another side of rotating drum;

Figure 25 is the end view under the decline job state of the lower position side of rotating drum;

Figure 26 is the end view under the decline job state of the side, high position of rotating drum;

Figure 27 is the end view under the decline job state of the lower position side of rotating drum;

Figure 28 is the end view of tooth support portion;

Figure 29 is the vertical view of a part for feeding screw;

Figure 30 is the end view of seat supporting construction;

Figure 31 is the vertical view of seat supporting construction;

Figure 32 is the front view of seat supporting construction;

Figure 33 is the end view at the tooth support portion place of the rotating drum with the second enforcement structure.

Embodiment

[the first embodiment]

First embodiment of the present invention is described with reference to the accompanying drawings.

Fig. 1 is the left side view of the combine entirety of first embodiment of the invention.Fig. 2 is the right side view of the combine entirety of the embodiment of the present invention.Fig. 3 is the vertical view of the combine entirety of the embodiment of the present invention.As shown in these figures, the combine of the embodiment of the present invention has: travel machine body, and this travel machine body utilizes the crawler type running device 1,1 of pair of right and left from walking, and has the Drive Section 2 installed and driven seat 2a; Be arranged on the thresher 4 of the rear portion side of the body frame 3 of this travel machine body; Grain bagging portion 10, it is equipped with the pack case 11 of the lateral sides being arranged on this thresher 4; And the reaping part 20 of pay-off 21 is connected with in the front portion of above-mentioned thresher 4.

This combine harvests rice, wheat etc.

That is, reaping part 20, except having above-mentioned pay-off 21, also has: the harvesting frame 22 being connected to the leading section of this pay-off 21; Be arranged on the nearside divider 23 of the both lateral sides of the leading section of this harvesting frame 22; Above-mentioned harvesting frame 22 can be arranged on the reaping apparatus 24 of the hairclipper shape of the leading section of the pallet portion 22a of harvesting frame 22 with freely driving; Above-mentioned harvesting frame 22 is configured at the feeding screw 25 of the upper surface side of above-mentioned pallet portion 22a with rotating freely driving; And rotating drum 27, this rotating drum 27 is supported on the support arm 26,26 of pair of right and left with rotating freely driving, and this support arm forwards extends from the top of the base end side of above-mentioned harvesting frame 22.

Above-mentioned pay-off 21 is swung up and down operation around the lifting axle center P towards body transverse direction relative to thresher 4 under the effect of hydraulic cylinder 28; thus, the above-mentioned pallet portion 22a that above-mentioned reaping part 20 is elevated to harvesting frame 22 drops to decline job state and the non-job state of rising that significantly rises from ground of harvesting frame 22 of Near Ground.Reaping part 20 be under decline job state, travel machine body is travelled time, reaping part 20 carries out gathering in the harvesting process of upright straw and supplies the process of harvesting straw to thresher 4.

That is, pair of right and left nearside divider 23,23 is utilized upright straw to be divided into harvesting object and non-harvesting object, then, rotating drum 27 is utilized to hold together to utilize this reaping apparatus 24 to gather in reaping apparatus 24 using the upright straw rake as harvesting object.The spiral plate 25a being in the both end sides of feeding screw 25 is utilized to gather in straw along pallet portion 22a lateral transfer to the front of pay-off 21.Utilization can one rotatably be arranged on conveying arm 25b in the middle of feeding screw 25 hold together to give, the harvesting straw arriving pay-off 21 front is sent to the entrance of the pay-off 21 be positioned on rear side of feeding screw 25.Then, utilize and be positioned at the conveyer 29 of pay-off 21 inside, by the harvesting straw that is sent in pay-off 21 via the delivered inside of pay-off 21 to rear.Utilize above-mentioned conveyer 29 hold together to send effect, the harvesting straw arriving pay-off 21 rearward end is put into the threshing chamber 31(of thresher 4 with reference to Fig. 4 from strain root to the entirety of fringe point) leading section.

Fig. 4 is the longitudinal cross-sectional side view of above-mentioned thresher 4.Fig. 5 is the cross-sectional front view of above-mentioned thresher.As shown in these figures, above-mentioned thresher 4 has: the threshing portion 30 with above-mentioned threshing chamber 31 and the screening unit 40 with screening room 41 be positioned at below above-mentioned threshing chamber 30.

Above-mentioned threshing portion 30, except having above-mentioned threshing chamber 31, also has: around the threshing cylinder 32 be arranged on rotating freely driving towards the threshing cylinder axis of rotation 32a before and after body in this threshing chamber 31; Surrounding along the lower side of threshing cylinder 32 is configured in the undertaking net 33 in above-mentioned threshing chamber 31; Multiplely send dirt valve 35, the direction along threshing cylinder axis of rotation 32a is arranged in the inner surface side of the top board 34 of above-mentioned threshing chamber 31.

Threshing portion 30 carries out threshing process as follows.

That is, utilize the rake that integrally rotatably can be arranged on the spiral plate shape of threshing cylinder 32 leading section to hold together tooth 32b, the harvesting paddy bar putting into threshing chamber 31 leading section is sent to the threshing handling part with threshing tooth 32c of threshing cylinder 32.The above-mentioned threshing tooth 32c of the circular bar shape utilizing circumference and fore-and-aft direction along threshing cylinder 32 to arrange and above-mentioned undertaking net 33, carry out threshing process to the harvesting straw being sent to this threshing handling part.Now, threshing cylinder 32 rotate transfer effect and respectively send dirt valve 35 guide of flow effect under, straw bits grade flow to the rear of threshing chamber 31.The grain deviate from drops in the screening plant 42 of screening unit 40 by accepting net 33, and the dust such as straw bits are discharged from the dirt mouth 36 that send being positioned at threshing chamber 31 rearward end.

Above-mentioned screening unit 40, except having above-mentioned screening room 41 and above-mentioned screening plant 42, also has the windmill 43 of the below being arranged on screening plant 42 leading section; Be arranged on the one-level screw conveyer 44 bottom screening room 41 and secondary screw type conveyer 45.

Above-mentioned screening plant 42 has: with the screen box 50 being positioned at the screening driving mechanism 46 that screens room 41 rearward end and linking; In the inside upper part of this screen box 50 along the upper cereal dish 51 of screen box fore-and-aft direction spread configuration, glume-shell screen 52 and strawwalker 53; In the bottom of above-mentioned screen box 50 along the lower cereal dish 54 of screen box fore-and-aft direction spread configuration and cereal sieve 55.

Above-mentioned screening plant 42 has the screening adjustment plate 56 being arranged on the leading section of above-mentioned glume-shell screen 52 in the mode that can freely load and unload.This screening adjustment plate 56, when from accept the dust such as the stalk bits that mix in threshing handled thing that net 33 drops on cereal dish 51 many use in the following manner: in the below of the sieve line 57 extended from the rearward end of cereal dish 51 on above-mentioned, close the handled thing downcast hole of glume-shell screen 52.

Screening unit 40 utilizes above-mentioned screening driving mechanism 46 wobble drive screening plant 42, utilizes windmill 43 to be supplied the screening wind along thresher fore-and-aft direction by the mode of glume-shell screen 52, strawwalker 53 and cereal sieve 55, carries out the Screening Treatment of threshing handled thing thus.

That is; the threshing handled thing fallen from undertaking net 33 is accepted by screening plant 42; the swings screening that in utilization, cereal dish 51, glume-shell screen 52, strawwalker 53, lower cereal dish 54 and cereal sieve 55 carries out and the pneumatic jig choosing that screening wind carries out, filter out the singulate grain as coagulation thing, the impurity of grain that the band branch as two stage treatment thing obstructs and stalk bits etc. and the dust such as stalk bits as tertiary treatment thing.Make coagulation thing drop to one-level screw conveyer 44, utilize this one-level screw conveyer 44 to be transported to the lateral outer side of threshing body.Make two stage treatment thing drop to secondary screw type conveyer 45, utilize this secondary screw type conveyer 45 to be transported to the lateral outer side of threshing body.Tertiary treatment thing together with the threshing handled thing sending dirt mouth 36 from threshing chamber 31, is discharged to the trailing outside of threshing body by utilization screening wind from the dust-exhausting port 47 being positioned at threshing After-Body.

The dust that above-mentioned dust-exhausting port 47 has discharging carries out guide of flow downwards and makes it can not be diffused into the dust discharge cover 48 at thresher rear.

As shown in Figure 2, above-mentioned grain bagging portion 10 is except having above-mentioned pack case 11, also have a bag support portion, this bag of support portion utilizes bag support bar 13 to support the upper end side of the grain bag be arranged on expelling tube 12, and utilizes bag to accept table top 14 to support the lower end side of this grain bag.Wherein, above-mentioned expelling tube 12 is positioned at the bottom of pack case 11.

Pack case 11 utilizes the device 15(that winnows with reference to Fig. 3) supply the hulled grain from above-mentioned one-level screw conveyer 44 and it is stored, and the hulled grain of storage is discharged to grain bag from above-mentioned expelling tube 12.

As shown in Figure 3, thresher 4 has the secondary feeding back device 60 of the lateral outer side being arranged on threshing body.Fig. 6 is the vertical profile rearview of above-mentioned secondary feeding back device 60.Fig. 7 is the end view of above-mentioned secondary feeding back device 60.As shown in these figures, secondary feeding back device 60 has: be communicated with the treatment box 62 of input port 61 in the feeding terminal portion of above-mentioned secondary screw type conveyer 45; In the inside of this treatment box 62 so that the two panels process blade 63 that the mode on the helical axis of secondary screw type conveyer 45 is arranged integrally rotatably can be connected to; Lower end side is communicated in the cylinder 64 of winnowing of the outlet of above-mentioned treatment box 62; The screw rod 65 of winnowing rotatably arranged in the inside that this winnows cylinder 64; The transmission case 66 that the bottom of stepping up lateral sides and the above-mentioned cylinder 64 of winnowing stating treatment box 62 is arranged.

Secondary feeding back device 60 utilizes the above-mentioned process blade 63 of secondary screw type conveyer 45 rotary actuation; utilize the driving-chain 67 that is housed in transmission case 66 driving force of secondary screw type conveyer 45 is delivered to screw rod 65 of winnowing bottom, drive this screw rod 65 of winnowing; after singulate process is carried out to the two stage treatment thing from above-mentioned screening unit 40, in screening plant 42, carry out Screening Treatment again.

That is, utilize the carrying capacity of secondary screw type conveyer 45 that the handled thing from secondary screw type conveyer 45 is imported the inside for the treatment of box 62.Utilize the impact effect of process blade 63, the band branch stalk grain being blended in the two stage treatment thing entering into treatment box 62 is processed and makes it singulate.The handled things such as the grain after process and stalk bits are sent to and winnow in cylinder 64 under the effect of the process blade 63 rotated.The handled thing entering into cylinder 64 of winnowing is raised the upper end delivering to cylinder 64 of winnowing by screw rod 65 of winnowing.Utilize the throwing effect of the rotating vane 68 can integrally rotatably set up on the helical axis of screw rod 65 of winnowing; the handled thing arriving the upper end of cylinder 64 of winnowing is sent into the feedback outlet 69 being positioned at the lateral sidewalls of thresher 4; make it from this feedback outlet 69 by dropping to screening room 41 between the body lateral sidewalls of threshing chamber 31 and threshing cylinder 32; thus, the leading section of screening plant 42 is supplied to.

Above-mentioned treatment box 62 has: the lateral sidewalls 70(being bolted to the horizontal inner side of travel machine body being positioned at thresher 4 calls inboard lateral sides wall 70 in the following text) on case body 62a; At the side plate 62c that the opposition side of the side, place, above-mentioned input port 61 of this case body 62a utilizes connecting bolt 62b to be connected in the mode that can freely load and unload.

That is, coming the inside of open treated case 62 by unloading lower side panel 62c, even if under making the state be still connected on above-mentioned inboard lateral sides wall 70 at case body 62a, also can carry out maintenance and the cleaning for the treatment of box inside.Transmission case 66 is connected to the helical axis of secondary screw type conveyer 45 in the mode that can freely load and unload and winnows on the power shaft 65a of screw rod 65, above-mentioned transmission case 66 together can be loaded and unloaded with side plate 62c under the state being installed on side plate 62c.

As shown in Figure 1, above-mentioned thresher 4 has and is arranged on the lateral sidewalls 71(that is positioned at its travel machine body lateral outer side with reference to Fig. 5, calls outside lateral sidewalls 71 in the following text) the upper front shroud 72 of outer surface side, upper back cover 73, lower front shroud 74 and lower back cover 75.

Above-mentioned upper front shroud 72, above-mentioned lower front shroud 74 and above-mentioned lower back cover 75 cover the tape handler 76(reference Figure 14 being arranged at lateral sidewalls 71 outer surface side, above-mentioned outside).Above-mentioned tape handler 76 by from the engine 5(that is positioned at below driver's seat seat 2a with reference to Fig. 2) driving force pass to above-mentioned threshing cylinder 32, above-mentioned windmill 43, above-mentioned one-level screw conveyer 44, above-mentioned secondary screw type conveyer 45 and above-mentioned screening driving mechanism 46.

Above-mentioned upper front shroud 72, above-mentioned lower front shroud 74 and above-mentioned lower back cover 75, be supported in the lateral sidewalls 71 of outside by the charging crane (not shown) arranged across each cover 72,74,75 and above-mentioned outside lateral sidewalls 71.The above-mentioned charging crane of each cover 72,74,75 utilizes hook (not shown) to form, and by utilizing the operating parts 77 be arranged on cover 72,74,75 to operate hook to disengaging side oscillation, carrys out the connection of release cover 72,74,75 relative to outside lateral sidewalls 71.

Each cover 72,74,75 also freely can be connected by connecting bolt with loading and unloading.

As shown in Figure 8; in the above-mentioned outside lateral sidewalls 71 of thresher 4, the upper cross side wall portion 71a that forms the threshing chamber 31 and lower lateral sidewalls portion 71b that forms above-mentioned screening unit 40 is formed as split, and above-mentioned upper cross side wall portion 71a is supported on the inner surface side of above-mentioned upper back cover 73.Body frame 78 ground stepping up rearward end and the thresher 4 stating back cover 73 is provided with charging crane 80 and Shu Zhi mechanism 81.

Figure 10 is the end view of above-mentioned charging crane 80 and above-mentioned Shu Zhi mechanism 81.Figure 11 is the rearview of above-mentioned charging crane 80 and above-mentioned Shu Zhi mechanism 81.As shown in these figures, above-mentioned charging crane 80 and above-mentioned Shu Zhi mechanism 81 have: upper and lower a pair supporter 82,82 is attached to a pair pivot fulcrum 83,83 up and down that above-mentioned body frame 78 is arranged; A pair connecting hole 85,85 up and down of upper and lower a pair connecting plate 84,84 and setting is connected in the inner surface side of upper back cover 73.

Utilize above-mentioned upper and lower a pair connecting hole 85 by above-mentioned upper and lower a pair connecting plate 84,84 respectively from top fitted in above-mentioned upper and lower a pair pivot fulcrum 83,83, upper and lower a pair supporter 82,82 utilizes its upper surface to accept from below and support and connection plate 84, by being set as this state, upper back cover 73 is connected in body frame 78 by charging crane 80, obtains the state that above-mentioned upper cross side wall portion 71a is connected to body frame 78 thus.Shu Zhi mechanism 81 carries out pivotal support; make above-mentioned upper cross side wall portion 71a swing opening and closing around the opening and closing axle center X upper and lower towards threshing body together with upper back cover 73, this opening and closing axle center X is the axle center that has of above-mentioned upper and lower a pair pivot fulcrum 83,83 and is positioned at the rear end side of cross side wall portion 71a.

Charging crane 80, removing the connection of upper back cover 73 relative to body frame 78 by being extracted from above-mentioned pivot fulcrum 83 by above-mentioned upper and lower a pair connecting plate 84,84, thus, removing the connection of above-mentioned upper cross side wall portion 71a relative to body frame 78.

Fig. 9 (A) be close close lateral sidewalls portion 71a state under vertical view.As shown in the drawing, utilize charging crane 80 that upper back cover 73 is connected to body frame 78, and, be set as the closed condition arranged on travel machine body fore-and-aft direction with the above-mentioned upper front shroud 72 under installment state.Like this, upper cross side wall portion 71a closes the threshing chamber transverse opening 86 being positioned at above-mentioned outside lateral sidewalls 71.Now, utilize the locking mechanism 87 of leading section and above-mentioned outside lateral sidewalls 71 setting of stepping up back cover 73, upper back cover 73 is fixed on closed condition, thereby, it is possible to upper cross side wall portion 71a is fixed on closed condition.

Figure 12 is the vertical view of above-mentioned locking mechanism 87.Figure 13 is the front view of above-mentioned locking mechanism 87.As shown in these figures, above-mentioned locking mechanism 87 has: the securing rod 87a being arranged on the outer surface side of above-mentioned outside lateral sidewalls 71; Form detachedly with this securing rod 87a and be arranged on a pair hook 87b, 87b of the rear side of the leading section of upper back cover 73; The operating parts 88 removing face side that operate, that be arranged on upper back cover 73 is swung with carrying out above-mentioned a pair hook 87b, 87b.

Substituting as this locking mechanism 87, also can adopt the structure of being closed and being fixed upper back cover 73 by connecting bolt, thus carries out the closedown locking of upper cross side wall portion 71b.

The upper cross side wall portion 71a that the solid line of Fig. 8 represents is the upper cross side wall portion swung under open state.The upper cross side wall portion 71a that the double dot dash line of Fig. 8 represents is the upper cross side wall portion unloaded under open state.Fig. 9 (B) is the vertical view under the swing open state of upper cross side wall portion 71a.As shown in these figures, be in upper back cover 73 under the state that above-mentioned locking mechanism 87 has been switched to latch-release state to swing to the lateral outer side of travel machine body around above-mentioned opening and closing axle center X and open.Like this, upper cross side wall portion 71a swings to travel machine body lateral outer side and becomes swing open state together with upper back cover 73.Or, by the operation that upper back cover 73 is mentioned relative to above-mentioned supporter 82, upper and lower a pair connecting plate 84,84 is extracted from pivot fulcrum 83, thus remove utilize above-mentioned charging crane 80 to realize upper back cover 73 relative to the connection of body frame 78.Like this, upper cross side wall portion 71a unloads from body frame 78 and becomes and unloads open state together with upper back cover 73.Like this, in either case, can open above-mentioned threshing chamber transverse opening 86, accept net 33 be still installed on threshing chamber 31 state under carry out overhauling and cleaning from threshing body lateral outer side.

As shown in Fig. 9 (B), swinging open under the state putting cross side wall portion 71a, end side can rotated freely and be supported on another side of the securing rod 89 on the connecting plate 84 of above-mentioned downside up and down, be arranged in the locking rod aperture 82a that supporter 82 has.Like this, securing rod 89 withstands and supports back cover on this under the open mode of upper back cover 73, thereby, it is possible to upper cross side wall portion 71a is fixed on open mode.

As shown in Fig. 5, Figure 14, thresher 4 has: cereal sieve handling window 90, and it is arranged in above-mentioned outside lateral sidewalls 71 in the above-mentioned lower lateral sidewalls portion 71b and above-mentioned inboard lateral sides wall 70 forming above-mentioned screening unit 40 and is formed on the lower lateral sidewalls portion 70b of above-mentioned screening unit 40; And the lid 91 of this cereal sieve handling window 90.The cereal sieve handling window 90 of above-mentioned outside cross side wall portion 71 is configured to, and is covered by above-mentioned lower back cover 75.The cereal sieve handling window 90 of above-mentioned inboard lateral sides wall portion 70b is positioned at the below of above-mentioned pack case 11.

Above-mentioned each lid 91, by so that a pair connecting bolt 93,93 that the mode acting on lid 91 bottom is arranged at the holding section 92 on above-mentioned lower lateral sidewalls portion 70b, 71b and is installed on lid 91 upper end freely can be engaged detachedly, load and unload relative to lower lateral sidewalls portion 70b, 71b, thus, opening and closing cereal sieve handling window 90.

That is, when the crop species gathered in the crops changes, cereal sieve 55 is replaced by the cereal sieve of the handled thing downcast hole being provided with suitable size.This replacing is carried out according to following will getting.

That is, unload above-mentioned lower back cover 75 and be positioned at this lower back cover 75 above-mentioned lid 91 behind, open the cereal sieve handling window 90 of outside lateral sidewalls 71, carrying out the connection that realized by connecting bolt between the end side of cereal sieve 55 and screen box 50 or connect removing from this cereal sieve handling window 90.Unload the cereal sieve handling window 90 being positioned at above-mentioned lid 91 below above-mentioned pack case 11, opening above-mentioned inboard lateral sides wall 70, carry out the connection that realized by connecting bolt between another side of cereal sieve 55 and screen box 50 or connect removing from this cereal handling window 90.Cereal sieve 55 putting into and taking out relative to screening room 41 is carried out from the cereal sieve handling window 90 of outside lateral sidewalls 71 or inboard lateral sides wall 70.

As shown in Fig. 5, Figure 15, above-mentioned top board 34 via the travel machine body lateral outer side at this top board 34 end along travel machine body fore-and-aft direction spread configuration three Ge Shuzhi mechanisms 94 and be connected to body frame 95.

That is, the opening and closing axle center Y along travel machine body fore-and-aft direction that top board 34 has around the connecting pin 94a of above-mentioned Ge Shuzhi mechanism 94 swings relative to body frame 95 decline, become the closed posture that the free end 34a of top board 34 and body frame 96 abut against, close threshing chamber upper shed 97 thus.Now, by making three locking pieces 98 being arranged in the free end of top board 34 along travel machine body fore-and-aft direction act on body frame 96, top board 34 can be fixed on closed posture.

Swing relative to body frame 95 rising around above-mentioned opening and closing axle center Y by making top board 34, threshing chamber upper shed 97 can be opened, overhaul and clean threshing cylinder 32 from this threshing chamber upper shed 97, by threshing chamber upper shed 97, undertaking net 33 can also be extracted to outside from threshing chamber 31.Be divided into two to split undertaking net along threshing cylinder circumference on undertaking net 33 and extract.

As shown in figure 15, above-mentioned top board 34 has the stiffener 100 at the travel machine body both ends being transversely arranged at its outer surface side.As shown in Figure 15, Figure 16, above-mentioned each stiffener 100, multiplely sending in dirt valve 35 three positions sending the end of dirt valve 35 corresponding being positioned at threshing chamber front portion with above-mentioned, utilizes connecting bolt 101, is connected on the top plate 34 in the mode fastening altogether with sending dirt valve 35.

That is, because the front portion of threshing cylinder 31 also exists the handling object thing such as more grain and straw bits than rear portion, thus be positioned at sending dirt valve 35 than the dirt valve 35 that send being positioned at threshing chamber 31 rear portion and will bearing stronger reaction force of threshing chamber 31 front portion.Therefore, each stiffener 100 improves support strength to carry out top board 34 securely to the support sending dirt valve 35.

As shown in Figure 4, above-mentioned screening plant 42, via stepping up the rear end side stating screen box 50 and the charging crane 103 arranged with the carriage 102 that above-mentioned screening driving mechanism 46 links, is connected to above-mentioned carriage 102 in the mode that can freely load and unload.

That is; above-mentioned dust discharge cover 48 is unloaded from threshing body, opens above-mentioned dust-exhausting port 47; hand is stretched into screening room 41 from this dust-exhausting port 47; remove utilize above-mentioned charging crane 103 to realize screen box 50 relative to the connection of carriage 102, and by screening plant 42 to threshing body rear side move operation.Like this, utilizing the pair of right and left guide rail 104,104 be arranged on above-mentioned carriage 102 to carry out sliding guidance screen box 50, making screening plant 42 by moving to dust-exhausting port 47 in threshing chamber, by taking out operation easily, whole screening plant 42 can be pulled out to body from dust-exhausting port 47.

As above-described embodiment upper cross side wall portion 71b substitute; also can adopt around be positioned at upper cross side wall portion front and towards threshing body above-below direction axis swing and carry out the structure of opening and closing, or around be positioned at upper cross side wall portion upper end side the axis swing towards threshing body fore-and-aft direction and carry out the structure of opening and closing.Object of the present invention can be reached in these cases.

[the second embodiment]

Second embodiment of the present invention is described with reference to the accompanying drawings.

Figure 17 is the left side view of the combine entirety of second embodiment of the invention.Figure 18 is the right side view of the combine entirety of second embodiment of the invention.Figure 19 is the vertical view of the combine entirety of second embodiment of the invention.As shown in these figures, the combine of the embodiment of the present invention has: travel machine body, and this travel machine body utilizes the crawler type running device 201,201 of pair of right and left from walking, and has the Drive Section 202 installed and driven seat 202a; Be arranged on the thresher 204 of the rear portion side of the body frame 203 of this travel machine body; Grain bagging portion 210, it is equipped with the pack case 211 of the lateral sides being arranged on this thresher 204; And the reaping part 220 of pay-off 221 is connected with in the front portion of above-mentioned thresher 204.

This combine harvests rice, wheat etc.

That is, reaping part 220, except having above-mentioned pay-off 221, also has: the harvesting frame 222 being connected to the leading section of this pay-off 221; Be arranged on the nearside divider 223 of the both lateral sides of the leading section of this harvesting frame 222; Above-mentioned harvesting frame 222 is configured in the leading section of the pallet portion 222a of harvesting frame 222 and is arranged to the reaping apparatus 224 of the hairclipper shape that can freely drive; Feeding screw 225, it is near the rear of above-mentioned reaping apparatus 224 and in the upper surface side of above-mentioned pallet portion 222a, be configured in rotating freely driving in above-mentioned harvesting frame 222; And rotating drum 227, this rotating drum 227 is supported on the support arm 226,226 of pair of right and left with rotating freely driving, and this support arm forwards extends from the top of the base end side of above-mentioned harvesting frame 222.

Above-mentioned pay-off 221 swings up and down operation around the lifting axle center P towards body transverse direction relative to thresher 204 under the effect of hydraulic cylinder 228; thus, the non-job state of rising that the decline job state that the above-mentioned pallet portion 222a that above-mentioned reaping part 220 is elevated to harvesting frame 222 drops to Near Ground significantly rises from ground with harvesting frame 222.Reaping part 220 be under decline job state, travel machine body is travelled time, reaping part 220 carries out gathering in the harvesting process of upright straw and supplies the process of harvesting straw to thresher 204.

That is, pair of right and left nearside divider 223,223 is utilized upright straw to be divided into harvesting object and non-harvesting object, then, rotating drum 227 is utilized to hold together to utilize this reaping apparatus 224 to gather in reaping apparatus 224 using the upright straw rake as harvesting object.The spiral plate 225a being in the both end sides of feeding screw 225 is utilized to gather in straw along pallet portion 222a lateral transfer to the front of pay-off 221.Utilization can one rotatably be arranged on conveying arm 225b in the middle of feeding screw 225 hold together to give, the harvesting straw arriving pay-off 221 front is sent to the entrance of the pay-off 221 be positioned on rear side of feeding screw 225.Then, utilize and be positioned at the conveyer 229 of pay-off 221 inside, by the harvesting straw that is sent in pay-off 221 via the delivered inside of pay-off 221 to rear.Utilize above-mentioned conveyer 229 hold together to send effect, the harvesting straw arriving pay-off 221 rearward end is put into the threshing chamber (not shown) of thresher 204 to the entirety of fringe point from strain root.

As shown in figure 29, the terminal part 225c of above-mentioned each spiral plate 225a of above-mentioned feeding screw 225 is made up of the steel wire rod of welding on spiral plate 225a.

That is, when producing wearing and tearing on the terminal part 225c of spiral plate 225a, replacing the steel wire rod of wearing and tearing by installing new steel wire rod, can repair by means of only replacing terminal part 225c.

Thresher 204 utilizes and makes the threshing cylinder (not shown) of the harvesting straw rotation put in threshing chamber carry out threshing process.

As shown in figure 18, above-mentioned grain bagging portion 210 is except having above-mentioned pack case 211, also have a bag support portion, this bag of support portion utilizes bag support bar 213 to support the upper end side of the grain bag be arranged on expelling tube 212, and utilizes bag to accept table top 214 to support the lower end side of this grain bag.Wherein, above-mentioned expelling tube 212 is positioned at the bottom of pack case 211.

Pack case 211 utilizes the device 215(that winnows with reference to Figure 18) supply the hulled grain from the screening unit (not shown) of thresher 204 and it is stored, and the hulled grain of storage is discharged to grain bag from above-mentioned expelling tube 212.

As shown in Figure 18, Figure 19, grain bagging portion 210 has a pair, front and back operation auxiliary member 216,216.Each operation auxiliary member 216 uses the mode of posture and the rising collecting posture be positioned at above pack case 211 as shown in double dot dash line Figure 18 to be supported with the decline being projected into travel machine body lateral outer side from bag support portion that can switch to as shown in solid line in Figure 18 and Figure 19.Posture is used by being switched to by each operation auxiliary member 216 to decline, it is the configuration height of 1.0 ~ 1.1m that each operation auxiliary member 216 is in the height H accepting table top 214 upper surface apart from bag, thus the user taken in order to luggage bag operation enterprising in grain bagging portion 210 can it can be used as and used to lumbar.

As shown in Figure 30, Figure 31, Figure 32, above-mentioned driving seat 202a, via be arranged on drive seat 202a lower face side pair of right and left installing component 230,230, be arranged on the leading section of above-mentioned pair of right and left installing component 230,230 connecting axle 231, utilize support chip portion 232a rotatably to support the support component 232 of the both ends 231a of this connecting axle 231, be supported on seat brace table 233.Seat brace table 233 becomes the hood covering above-mentioned engine 205.Each installing component 230, via the yielding rubber 234 being arranged on installing component 230 rearward end and the yielding rubber 234 be arranged on connecting axle installing component 230a, loads and is supported on the upper surface of seat brace table 233.

Above-mentioned seat brace table 233 has the seat fixed mechanism 236 being equipped with seat fixed body 235, and this seat fixed body 235 is arranged on the upper surface side of this seat brace table 233.This seat fixed mechanism 236, except having above-mentioned seat fixed body 235, also has the stop pin 237 that can freely be loaded and unloaded on this seat fixed body 235.Seat fixed mechanism 236 is by being installed on pair of right and left longitudinal slice 235a, 235a of above-mentioned seat fixed body 235 by above-mentioned stop pin 237, make stop pin 237 carry out stopping function from top to the rearward end of above-mentioned installing component 230, prevent installing component 230 from rising swing around the axle center of the end 231a of above-mentioned connecting axle 231, thus, seat lock-out state driving seat 202a being fixed on the use posture that declines is become.

That is, seat fixed mechanism 236 just can be removed to driving the fixing of seat 202a by being unloaded from seat fixed body 235 by above-mentioned stop pin 237, thus, drive seat 202a to swing relative to seat brace table 233 rising, thus switch to the open posture of maintenance rising above open seat brace table 233.

The following describes above-mentioned rotating drum 227.

Figure 21 is the end view of above-mentioned rotating drum 227.Figure 22 is the vertical view of above-mentioned rotating drum 227.Figure 23 is the front view of above-mentioned rotating drum 227 end side.Figure 24 is the front view of above-mentioned another side of rotating drum 227.As shown in these figures, above-mentioned rotating drum 227 has: the driving shaft 240 being rotatably supported on the terminal part of above-mentioned pair of support arms 226,226; Can one rotatably be arranged on the left and right end portions of this driving shaft 240, be seen as pentagonal reel frame 241 from travel machine body side; The tooth support portion 242 of being made up of circular pipe, it is arranged on rotating drum 227 across the circumferential array of pair of right and left reel frame 241,241 ground along rotating drum 227, and, respectively there is the mode of to configure with five tops at reel frame 241.

Above-mentioned each reel frame 241 has: the reel frame body 241b with the sheet metal of five arm 241a; Be arranged on the resinous block 243 of the terminal part of each arm 241a; The band sheet material 244 of ring-type, it is stepped up and states five blocks 243 and reel, and is connected to said arm 241a with the common fastening bolt shared with above-mentioned block 243.Above-mentioned each block 243 forms the installation portion rotatably installing above-mentioned tooth support portion 242.Ring-type band plate 244 forms by the divided segmentation band sheet material in the position of each arm 241a.

Rotating drum 227 has: tooth 245,246, and its rotating drum axis of rotation X1(had along above-mentioned driving shaft 240 is hereinafter referred to as reel axis of rotation X1) direction be arranged on above-mentioned each tooth support portion 242; Tooth maintaining body 260, it is arranged on the lateral outer side of a side of rotating drum 227, has and is seen as pentagonal auxiliary rotary body 261 from travel machine body side.

The pair of support arms 226,226 of rotating drum 227 utilizes with in above-mentioned pair of support arms 226,226 and gather in the hydraulic cylinder 250 that frame 222 is connected and swing up and down operation around the axle center Y1 of connecting axle 251 relative to gathering in frame 222, thus rotating drum 227 is elevated to decline job state and the non-job state of rising.

Figure 25 is the end view under the decline job state of the lower position side of rotating drum 227.As shown in the drawing, step-down operation pair of right and left support arm 226,226, and when the lower end side of rotating drum 227 is positioned near ground G, rotating drum 227 becomes the decline job state of lower position side.Like this, by the rotation of driving shaft 240, rotating drum 227 winding reel axis of rotation X1 rotates, thus tooth 245, the 246 winding reel axis of rotation X1 of each tooth support portion 242 is rotated to direction of rotation A.Each tooth 245,246 while remain the posture that extends from tooth support portion 242 downwards while rotate under the effect of above-mentioned tooth maintaining body 260, end 245a, 246a of each tooth 245,246 depict rotational trajectory T, this rotational trajectory T highly moves with the ground of the ground height H 1 of the end 223a lower than nearside divider 223 at the rear of the end 223a of nearside divider 223, further, the ground of the ground height H 2 in the front of reaping apparatus 224 with the end lower than reaping apparatus 224 is highly moved.

Thus, even if upright straw lodging is comparatively dark, even if there is the upright straw of the effect not being subject to nearside divider 223, rotating drum 227 also can make each tooth 245,246 engage upright straw accurately and upright straw rake is held together to be supplied to reaping apparatus 224.

Figure 26 is the end view of the decline job state of the side, high position of rotating drum 227.As shown in the drawing, step-down operation pair of right and left support arm 226,226 and when making the lower end side of rotating drum 227 be positioned at the position left slightly from ground G, rotating drum 227 becomes the decline job state of side, high position.Like this, by the rotation of driving shaft 240, rotating drum 227 winding reel axis of rotation X1 rotates, thus tooth 245, the 246 winding reel axis of rotation X1 of each tooth support portion 242 is rotated to direction of rotation A.Each tooth 245,246 while remain the posture that extends from tooth support portion 242 downwards while rotate under the effect of above-mentioned tooth maintaining body 260, end 245a, 246a of each tooth 245,246 depict rotational trajectory T1, and this rotational trajectory T1 highly moves with the ground of the ground height H 1 of the end 223a higher than nearside divider 223 at the rear of the end 223a of nearside divider 223.

Thus, under the decline job state of side, high position, no matter the tilting forward and back of travel machine body, upright straw rake can both be held together be supplied to reaping apparatus 224 by rotating drum 227 while avoiding each tooth 245,246 ground connection.

As shown in figure 27, above-mentioned reel axis of rotation X1 is configured to, under the decline job state of rotating drum 227, the vertical line vertical relative to the cropping knife upper surface of reaping apparatus 224 is become with the straight line S of reaping apparatus 224 by reel axis of rotation X1, even if change the extension angle that each tooth 245,246 extends from tooth support portion 242, also can prevent straw from floating from reaping apparatus 224 and supplying straw to reaping apparatus 224 well.

That is, the expression of the tooth 245,246 shown in solid line of Figure 27 is supported on the tooth on tooth support portion 242 with standard extension angle.The posture that tooth 245,246 shown in the dotted line of Figure 27 represents than standard extension angle rolls the tooth that oblique posture support to draw back.The posture that tooth 245,246 shown in the double dot dash line of Figure 27 represents than standard extension angle rolls the tooth that oblique posture support to march forward.As shown in these lines, even if the extension angle that change tooth 245,246 extends from tooth support portion 242, also can, to change the state at the interval between tooth end and reaping apparatus 224 not significantly, tooth 245,246 be moved above reaping apparatus 224.

Be supported in the above-mentioned multiple teeth 245,246 on above-mentioned each tooth support portion 242, the tooth 246 being positioned at the horizontal side of rotating drum of left and right is set to side tooth 246, and the tooth 245 be positioned at inside rotating drum is set to inner tines 245.Above-mentioned each side tooth 246 of each tooth support portion 242 and above-mentioned inner tines 245 are made up of the solid-iron rounding bar material extended from tooth support portion 242.As shown in Figure 22,23, every two of the above-mentioned inner tines 245 of each tooth support portion 242 are made up of a round bar material, this round bar material is bent to type, has above-mentioned inner tines 245 at both ends, has the connecting portion 247 connected relative to tooth support portion 242 at pars intermedia.

Side tooth 246 has the external diameter being greater than inner tines 245, is greater than with the bending strength making each side tooth 246 of each tooth support portion 242 have the bending strength that each inner tines 245 has.

That is, in the horizontal side of rotating drum 227, the upright straw rake that the counter-force being entangled with and will carrying out applying side tooth 246 of the upright straw sometimes because not gathering in soil is large holds together.Therefore, even if side tooth 246 is subject to also not bending from the large counter-force of straw, be locked to upright straw, securely straw rake held together to reaping apparatus 224.

On the other hand, in the inner side of rotating drum 227, being entangled with of the upright straw of not gathering in soil can not occur, thus the little upright straw rake of the counter-force carrying out applying inner tines 245 holds together.Therefore, inner tines 245 engages upright straw than being easier to flexure under from the counter-force effect of upright straw, promptly can hold together straw rake to reaping apparatus 224.

As shown in figure 21, each inner tines 245 of each tooth support portion 242 is more formed by the case of bending of rotating drum outer circumferential side with the end side of the end side of inner tines 245 than side tooth 246.

That is, if side tooth 246 ground connection of rotating drum 227, because side tooth 246 has the bending strength being greater than inner tines 245, so easily distortion or damaged.But, even if when there is ground connection in rotating drum 227, also be inner tines 245 ground connection and side tooth 246 is earth-free, elastic deformation is easily there is in inner tines 245 because having less bending strength, there is not plastic deformation or breakage because of earth-free in side tooth 246, thus inner tines 245 and side tooth 246 are all difficult to plastic deformation or breakage occur.

As shown in figure 21, above-mentioned five tooth support portions 242 are set to the first tooth support portion 242A, the second tooth support portion 242B, the 3rd tooth support portion 242C, the 4th tooth support portion 242D and the 5th tooth support portion 242E respectively.Except a pair tooth support portion 242 that the first tooth support portion 242A adjacent in rotating drum direction of rotation and the 5th tooth support portion 242E is formed, (i.e. a pair tooth support portion 242 forming of the first tooth support portion 242A and the second tooth support portion 242B, other paired tooth support portion beyond 242, 242, a pair tooth support portion 242 that second tooth support portion 242B and the 3rd tooth support portion 242C is formed, 242, a pair tooth support portion 242 that 3rd tooth support portion 242C and the 4th tooth support portion 242D is formed, 242, a pair tooth support portion 242 that 4th tooth support portion 242D and the 5th tooth support portion 242E is formed, 242), as shown in figure 22, the inner tines group with multiple above-mentioned inner tines 245 supported by a tooth support portion 242, with the inner tines group with multiple above-mentioned inner tines 245 supported by another tooth support portion 242, to be equivalent to inner tines 245 in the inner tines group of each tooth support portion 242 installation interval D1(on reel axis of rotation direction hereinafter referred to as inner tines installation interval D1) about 1/2 distance D2, configure along reel axis of rotation direction to staggered positions.

That is, in a pair tooth support portion 242 that the first tooth support portion 242A and the second tooth support portion 242B is formed, 242, a pair tooth support portion 242 that second tooth support portion 242B and the 3rd tooth support portion 242C is formed, 242, a pair tooth support portion 242 that 3rd tooth support portion 242C and the 4th tooth support portion 242D is formed, 242, a pair tooth support portion 242 that 4th tooth support portion 242D and the 5th tooth support portion 242E is formed, in 242, the inner tines 245 of a tooth support portion 242 each other with the inner tines 245 of another tooth support portion 242 circumferential array along rotating drum.Thus, even if there is the upright straw that the inner tines 245 being positioned at the tooth support portion 242 arrived below rotating drum 227 is subject to the locking of this inner tines 245 each other and not, rotating drum 227 also can make the inner tines 245 of the next tooth support portion 242 arrived engage this upright straw and hold together upright straw rake to reaping apparatus 224 in this case.

As shown in Figure 23,24, above-mentioned rotating drum 227 has the tooth cover 253 be installed on above-mentioned each tooth support portion 242.As shown in figure 28, above-mentioned each tooth cover 253 covers the above-mentioned connecting portion 247 of inner tines 245, to consider to be worth doing etc. can not be entangled with on this connecting portion 247 to make straw.Each tooth cover 253 is made up of the resin-made cylindrical shell being provided with slit 254 in length range, by making slit 254 elastic deformation to open mode, can load and unload tooth support portion 242 by the slit 254 opened.

Figure 21 represents the side-looking structure of above-mentioned tooth maintaining body 260.Figure 23 represents the main TV structure of above-mentioned tooth maintaining body 260.As shown in these figures, tooth maintaining body 260, except having above-mentioned auxiliary rotary body 261, also has: be supported on the supporter 262 being seen as circle from the side of rotating drum on the lug boss 226a of above-mentioned support arm 226; Step up and state auxiliary rotary body 261 and above-mentioned reel frame 241 ground and correspond to the connecting rod 263 that above-mentioned each tooth support portion 242 arranges.

Above-mentioned supporter 262 is embedded in above-mentioned lug boss 226a outside installing hole 262a place, in the gripper shoe 264 utilizing set bolt 265 to be fixed on to be connected with this lug boss 226a.This supporter 262 has three backing rolls 266, and these backing rolls 266 snap in the circular mounting hole 261a of above-mentioned auxiliary rotary body 261 and the perimembranous be distributed at supporter 262.Auxiliary rotary body 261 props up on above-mentioned supporter 262 by above-mentioned three roller 266 pivots, rotates around the axle center Z being configured in the central part of above-mentioned supporter 262 from above-mentioned reel axis of rotation X1 prejudicially.The end of the reel frame side of above-mentioned each connecting rod 263 can one rotatably be connected on the rotation fulcrum 242a of corresponding above-mentioned tooth support portion 242.The end on the auxiliary rotation side of above-mentioned each connecting rod 263 is rotatably connected to the top of auxiliary rotary body 261.

Thus, tooth maintaining body 260, along with the rotation of rotating drum 227, auxiliary rotary body 261 is made to utilize the driving force transmitted via connecting rod 263 from rotating drum 227 to rotate around the axle center Z different from reel axis of rotation X1, and utilize each tooth support portion 242 of connecting rod 263 rotation process rotation fulcrum 242a and relative to each tooth support portion 242 of reel frame 241 rotation process, no matter the rotation of rotating drum 227, all can operate into, keep the posture that the side tooth 246 of each tooth support portion 242 and inner tines 245 extend from tooth support portion 242 downwards.

Figure 33 is the end view at the tooth configuration section place of the rotating drum 227 with the second enforcement structure.

The rotating drum 227 with the second enforcement structure has side tooth 246 and inner tines 245, and the development length L1 that side tooth 246 extends from tooth support portion 242 is set as that the development length L2 extended from tooth support portion 242 than inner tines 245 is short.

That is, if rotating drum 227 is with side tooth 246 ground connection, because side tooth 246 has the bending strength being greater than inner tines 245, so easily distortion or damaged.But, even if when there is ground connection in rotating drum 227, also be inner tines 245 ground connection and side tooth 246 is earth-free, elastic deformation is easily there is in inner tines 245 because having less bending strength, there is not plastic deformation or breakage because of earth-free in side tooth 246, thus inner tines 245 and side tooth 246 are all difficult to plastic deformation or breakage occur.

As above-described embodiment inner tines 245 substitute, also can adopt following structure to implement, that is, inner tines 245 is configured as the case of bending of band corner angle, thus makes the end side of inner tines 245 than the end side of side tooth 246 more by the outer circumferential side of rotating drum.Now, also object of the present invention can be reached.

Claims (14)

1. a combine; there is thresher (4); this thresher (4) has threshing portion (30) and screening unit (40); harvesting straw is put into threshing chamber (31) and utilizes the threshing cylinder (32) of rotary actuation to carry out threshing process by above-mentioned threshing portion (30); above-mentioned screening unit (40) is positioned at the below of above-mentioned threshing chamber (31) and carries out Screening Treatment by the screening plant (42) freely swung to the threshing handled thing from above-mentioned threshing chamber (31); it is characterized in that

Cover (73) is provided with in the lateral outer side of above-mentioned threshing chamber (31);

Upper cross side wall portion (71a) is provided with forming with undertaking net (33) split being positioned at above-mentioned threshing chamber (31), between the part that above-mentioned upper cross side wall portion (71a) is positioned at above-mentioned cover (73) side of above-mentioned undertaking net (33) and above-mentioned cover (73), and form above-mentioned threshing chamber (31);

The outside lateral sidewalls (71) of above-mentioned thresher (4) is provided with the lower lateral sidewalls portion (71b) forming above-mentioned screening unit (40);

Possesses charging crane (80), above-mentioned upper cross side wall portion (71a) is detachably bearing in above-mentioned threshing chamber (31) by above-mentioned charging crane (80), can freely load and unload above-mentioned upper cross side wall portion (71a) above-mentioned undertaking net (33) being all arranged under the state on above-mentioned threshing chamber (31);

Cross side wall portion (71a) possess upper side wall portion, lower side wall portion on above-mentioned, above-mentioned upper side wall portion forms upper side, for up and down towards, above-mentioned lower side wall portion from the lower end of above-mentioned upper side wall portion towards downward-extension, and tilts in the mode be located inside threshing body close to extension side;

Under the state that cross side wall portion (71a) on above-mentioned is arranged in above-mentioned threshing chamber (31); the lower end of above-mentioned lower side wall portion is positioned at than above-mentioned lower lateral sidewalls portion (71b) more by the position inside threshing body, and the position inside threshing body is more leaned in the sidewall portion being positioned at side more external than the thresher of above-mentioned screening plant (42).

2. combine as claimed in claim 1, is characterized in that, the lower end of above-mentioned upper side wall portion and the upper end of above-mentioned lower side wall portion continuous.

3. combine as claimed in claim 2, it is characterized in that, the vertical sectional shape from the upper end of above-mentioned upper side wall portion to the lower end of above-mentioned lower side wall portion of above-mentioned upper cross side wall portion (71a) is formed as broken curve shape, the boudary portion warpage of above-mentioned broken curve between the lower end of above-mentioned upper side wall portion and the upper end of above-mentioned lower side wall portion.

4. combine as claimed any one in claims 1 to 3, is characterized in that possessing sidewall portion, bottom, and sidewall portion, above-mentioned bottom extends from the lower end of above-mentioned lower side wall portion towards the external side of thresher.

5. combine as claimed in claim 4; it is characterized in that; under the state that cross side wall portion (71a) on above-mentioned is arranged in above-mentioned threshing chamber (31); sidewall portion, above-mentioned bottom extends to than above-mentioned lower lateral sidewalls portion (71b) more by the position inside threshing body, and the position inside threshing body is more leaned in the sidewall portion extending to side more external than the thresher of above-mentioned screening plant (42).

6. a combine; there is thresher (4); this thresher (4) has threshing portion (30) and screening unit (40); harvesting straw is put into threshing chamber (31) and utilizes the threshing cylinder (32) of rotary actuation to carry out threshing process by above-mentioned threshing portion (30); above-mentioned screening unit (40) is positioned at the below of above-mentioned threshing chamber (31) and carries out Screening Treatment by the screening plant (42) freely swung to the threshing handled thing from above-mentioned threshing chamber (31); it is characterized in that

Cover (73) is provided with in the lateral outer side of above-mentioned threshing chamber (31);

In the inner surface side of above-mentioned cover (73), upper cross side wall portion (71a) is provided with forming with undertaking net (33) split being positioned at above-mentioned threshing chamber (31), between the part that above-mentioned upper cross side wall portion (71a) is positioned at above-mentioned cover (73) side of above-mentioned undertaking net (33) and above-mentioned cover (73), and form above-mentioned threshing chamber (31);

Possesses Shu Zhi mechanism (81), above-mentioned Shu Zhi mechanism (81) supports above-mentioned upper cross side wall portion (71a) and above-mentioned cover (73), above-mentioned upper cross side wall portion (71a) and above-mentioned cover (73) can be freely swung opening and closing, above-mentioned undertaking net (33) all can be arranged on the opening and closing that above-mentioned upper cross side wall portion (71a) and above-mentioned cover (73) to be freely swung integratedly under the state in above-mentioned threshing chamber (31);

Cross side wall portion (71a) possess upper side wall portion, lower side wall portion on above-mentioned, above-mentioned upper side wall portion forms upper side, for up and down towards, above-mentioned lower side wall portion from the lower end of above-mentioned upper side wall portion towards downward-extension, and tilts in the mode be located inside threshing body close to extension side;

Under the state that above-mentioned cover (73) is closed; the lower end of above-mentioned lower side wall portion is positioned at than above-mentioned lower lateral sidewalls portion (71b) more by the position inside threshing body in the inner side of above-mentioned cover (73), and the position inside threshing body is more leaned in the sidewall portion being positioned at side more external than the thresher of above-mentioned screening plant (42).

7. combine as claimed in claim 6, is characterized in that, the lower end of above-mentioned upper side wall portion and the upper end of above-mentioned lower side wall portion continuous.

8. combine as claimed in claim 7, it is characterized in that, the vertical sectional shape from the upper end of above-mentioned upper side wall portion to the lower end of above-mentioned lower side wall portion of above-mentioned upper cross side wall portion (71a) is formed as broken curve shape, the boudary portion warpage of above-mentioned broken curve between the lower end of above-mentioned upper side wall portion and the upper end of above-mentioned lower side wall portion.

9. the combine according to any one of claim 6 to 8, is characterized in that, possesses sidewall portion, bottom, and sidewall portion, above-mentioned bottom extends from the lower end of above-mentioned lower side wall portion towards the external side of thresher.

10. combine as claimed in claim 9; it is characterized in that; under the state that above-mentioned cover (73) is closed; sidewall portion, above-mentioned bottom extends to than above-mentioned lower lateral sidewalls portion (71b) more by the position inside threshing body in the inner side of above-mentioned cover (73), and the position inside threshing body is more leaned in the sidewall portion extending to side more external than the thresher of above-mentioned screening plant (42).

11. combines as claimed in claim 9, is characterized in that, the lower end in sidewall portion, above-mentioned bottom is positioned at the height corresponding with the bottom of above-mentioned cover (73).

12. combines as claimed in claim 10, is characterized in that, the lower end in sidewall portion, above-mentioned bottom is positioned at the height corresponding with the bottom of above-mentioned cover (73).

13. combines according to any one of claim 5,10 to 12, is characterized in that, the lower end of above-mentioned lower side wall portion and the upper end in sidewall portion, above-mentioned bottom continuous.

14. combines as claimed in claim 13, it is characterized in that, the vertical sectional shape from the upper end of above-mentioned lower side wall portion to the lower end in sidewall portion, above-mentioned bottom of above-mentioned upper cross side wall portion (71a) is formed as broken curve shape, the boudary portion warpage of above-mentioned broken curve between the lower end of above-mentioned lower side wall portion and the upper end in sidewall portion, above-mentioned bottom.