CN1219341A

CN1219341A - Straw cutting device

Info

Publication number: CN1219341A
Application number: CN 98124465
Authority: CN
Inventors: 西浦雅仁; 相坂卫
Original assignee: YOUKA TEKKOH KK
Current assignee: YOUKA TEKKOH KK
Priority date: 1997-12-10
Filing date: 1998-11-09
Publication date: 1999-06-16
Anticipated expiration: 2018-11-09
Also published as: JPH11168953A; JP3848452B2; CN1241466C

Abstract

A straw cutting device is disclosed, the device is mounted on the rear portion of a combine harvester, and exhaust gas form the engine of combine harvester is ejected to the falling straw tip cut by the cutting device, a switching cover which can be operated between an opening position and a closing position is provided on the cutting device, and the switching cover is equipped with a switch, which can stop the engine compulsively when the switch cover is opened at a closing position and the switch cover is opened much more.

Description

The stalk cutter sweep

The present invention relates to be installed in the combine rear portion, can cut off grain straw dispatch after the harvesting threshing and the stalk cutter sweep (stalk cutting machine) that the fragment (smear metal) that cuts into is scattered.

The following describes prior art related to the present invention.

Past, stalk cutter sweep (stalk cutting machine) is installed at the rear portion of combine, inner at this device, to feeding the vertical of stalk, vertically dispose a plurality of rectangular-shaped cutting knifes along this stalk, application for registration discloses clear 61-100951 communique and Japanese Utility Model registration bulletin and puts down in the 6-39562 communique disclosedly as Japanese Utility Model, and the technology that makes the below of portion's cutting knife within it be provided with the spiral propeller of the mandrel of this cutting knife shaft parallel has become known.The smear metal of stalk (cut off machine) is being fallen the field of having gathered in from spiral propeller from one side (near not gathering in field one side) with spiral propeller during opposite side (away from a side of not gathering in the field) transmits smear metal.

If use this spiral propeller, the smear metal that falls from the stalk cutting machine can be walking be piled up gathering in the field shape that is in line, perhaps be dispersed near the still uncut paddy stalk, so, be deposited in the smear metal of gathering on the field, because not perishable, thus can be floating when diversion in the field and hinder rice transplanting, also can cause uneven distribution of strip of alimentary paste on the field.And be dispersed in the smear metal of not receiving between harvested cereal culm, and then can be wrapped on the branch straw in the harvesting process below, or stop up carrier chain, or be deposited on the interior cutting knife of head, reduced harvesting efficiency.In order to address this is that, be on the stalk cutting machine, spiral propeller to be set in the past.

Past has in the top in the stalk cutting machine, can rotate up and down, and the hood that the cutting knife of establishing in making passes through, in cutting during stalk, the hood rotating opening that makes progress just can drop into stalk in the stalk cutting machine, cuts with cutting knife.By being installed in the strapper and the collecting and bundling machine of stalk cutting machine rear end, under situation about uncut stalk being scattered on the field, it is rotated and closed hood, stalk is square tube mistake from it then.

Be provided with the obstruction detector on strapper of installing in stalk cutting machine rear end or the collecting and bundling machine.When stifled full stalk, force engine shutdown by stopping up detector, perhaps, also can be stopping up on the stalk conveyer of grain header fuselage that detector is arranged on stalk cutting machine the place ahead.In this case, when strapper or collecting and bundling machine were stopped up by stalk, stalk rested on the hood, then stops up the stalk conveyer, therefore, stopped up detector and made closing of circuit and make engine shutdown.

Below, the problem that prior art exists is described.

The hood of stalk cutting machine, when with strapper of installing arbitrarily or collecting and bundling machine uncut stalk being tied up or binding, it is correctly closed that its remote control must be able to make it.But when stalk or smear metal completely must be overflowed the straw harvesting machine, hood can not be closed fully.If carry out cutting operation under this kind state, the part stalk of then being carried can the jack-up hood and enter space hood under, hood is slowly rotated to the back upper place open greatlyyer, and then hinder stalk mobile.The obstruction detector that is located on strapper or the collecting and bundling machine can not detect the strapper at no show stalk cutting machine rear or the stalk blockage on the collecting and bundling machine.So, engine is running still, continuation is to strapper or collecting and bundling machine transferring power, particularly for strapper, if hood under the effect of stalk piece pressure, rearward rotate from the enable possition sharp and enter the strapper hug the pivot region of acquisition means the time, will be subjected to the injury that this hugs acquisition means.Even the situation of stopping up detector is set on the stalk conveyer for stalk cutting machine the place ahead, stopping up detector stops up owing to hood detects conveyer limpingly to the back upper place rotation under the state of strapper motion still, but this moment, to detect its obstruction slow, can not prevent that hood from invading the zone of operating strapper.

On the other hand, relate to smear metal (the stalk fragment of cutting off with stalk cutter) scatter usefulness spiral propeller, disclosed content in the clear 61-100951 communique is disclosed in the Japanese Utility Model application for registration, it is neighbouring to transmitting a kind of simple spiral propeller of smear metal than the distally, so it scatters the poor ability of smear metal extensively on whole field also just never to gather in the field.Equal in the 6-39562 communique disclosed another kind of structure at Japanese Utility Model registration bulletin and then can within its width, scatter smear metal on the field to gathering in.Then, in use under the situation of type or large-scale combine, except the stalk cutting machine than combine fuselage narrow, it still near the rear end that is not configured in the combine fuselage with gathering in field one side.So, gathering in the strip area that will find on the field that smear metal does not spread to, will be created in the difference and the difference of nourishing face recited above aspect.

The following describes the means of dealing with problems.

The first, be that the exhaust of combine engine is ejected on the stalk fringe tip that has cut off that falls from this stalk cutter sweep lower end.

The second, the hood that can handle between closing position and enable possition is located on the upper end open, is provided with the hood that the hood that is in the close position is opened and be in this enable possition and further opens when big, force engine shutdown.

Below accompanying drawing is briefly explained.

Fig. 1 is the left view that is provided with the medium-sized or large-scale combine integral body of stalk cutter sweep of the present invention (stalk cutting machine 1).

Fig. 2 is the left view that the stalk cutting machine 1 of smear metal distribution structure of the present invention is arranged.

Fig. 3 is the vertical view of last figure.

Fig. 4 is the rearview of last figure.

Fig. 5 is the perspective view of monoblock type stalk cutting frame of the cutter of supporting stalk cutting machine 1.

Fig. 6 is the perspective view of split type stalk cutting frame of the cutter of supporting stalk cutting machine 1.

Fig. 7 is the right view on stalk cutting machine 1 top of the engine shut-down mechanism with interlock on the hood 8 of the embodiment of the invention 1.

Fig. 8 is the vertical view cutaway drawing of the changer lever with engine shutdown switch 30 20 of the embodiment of the invention 1.

Fig. 9 is the right view of last figure.

Figure 10 is the right view on stalk cutting machine 1 top of the engine shut-down mechanism with interlock on hood 8 of the embodiment of the invention 2.

Figure 11 is the right view on stalk cutting machine 1 top of the engine shut-down mechanism with interlock on hood 8 of the embodiment of the invention 3.

Figure 12 is that the part master of last figure looks cutaway view.

Figure 13 is the circuit diagram that has the engine shutdown switch of

embodiment

2,3.

The following describes most preferred embodiment of the present invention.

Disclosed among Fig. 1 is the combine that carries out six row harvestings that is provided with the medium-sized or large-scale combine of stalk cutting machine 1.

Fuselage frame 71 mountings are on cterpillar drive, prop up head 72 that the paddy stalk gathers in and be configured in the place ahead of fuselage frame 71, conveyer 75 directly is placed on after the head 72, the paddy stalk of crops such as paddy is with dividing straw 73 to divide right and left, prop up, cut off on cutter 74, the paddy stalk of cutting off transmits rearward with conveyer 75, enters shelling cabin 77 by feeding chain 76.In shelling cabin 77, on threshing cylinder, carry out threshing, filter selection by winnowing again for the grain taken off from the paddy bar and band stalk grain are carried out sorting.The grain that sub-elects is compiled by the tanker 78 that is configured in 77 right sides, threshing cabin.Frame is sailed the place ahead that chamber 80 is located at

tanker

78, and 81 in engine is disposed at below the seat of driver's cabin 80.

Stalk after the threshing further rearward transmits to stalk carrier chain 79 relays ground from feeding chain 76.As shown in Figure 2, dust exhausting fan 86 is configured in the below of stalk carrier chain 79, blows out downwards behind inspiration dust and the stalk.Stalk cutting machine 1 is arranged on the back lower place of stalk carrier chain 79.Circular saw blade on the turning cylinder of a pair of left and right directions of the configured in parallel of being fixed on is arranged in the stalk cutting machine 1, below this cutter, have smear metal and scatter spiral propeller 62.

As Fig. 2,3,4 and Fig. 7 as shown in, comply with top to bottm order, between the left plate 2 of stalk cutting machine 1 and right plate 3, low speed rotating shaft 4, high speed rotating shaft 5 and smear metal distribution auger (helical axis) 62 are set abreast.Three 4,5, an end separately of 62 are outstanding from one of

left side plate

2,3 outside, are fixed with the power input pulley of acceptance from engine 81 power on axle 4 outside jags, by the outer then jag engagement of gear with axle 5.The outside jag of auger 62 links to each other with rotating shaft 4,5 power by belt or chain.

As Fig. 5 and shown in Figure 6,

side plate

2,3 interconnects together for 60,61 liang by linking beam.Each links two ends,

beam

60,61 left and right sides can be welded into integral body as illustrated in fig. 5, also can connect with screw as illustrated in fig. 6.

The monoblock type stalk cutting frame that is made of

side plate

2,3 and

binding beam

60,61 as shown in Figure 5 has full intensity.

The split type stalk cutting frame that is made of same parts shown in Figure 6 is favourable to keeping in repair.That is, one of in

side plate

2,3 or one of link in the

beam

60,61 when damaging, can only change the parts that damage.Split type stalk cutting frame can be strengthened with increasing screw diameter and quantity.According to situation, can adopt any in two kinds of stalk cutting frames.

Fix circular saw blade 6 at certain intervals on the axle 4, and also fixing circular saw blade 7 at certain intervals on the axle 5.See that from the side each is sawed cutter 6 and overlaps with each saw cutter 7, between stalk

input saw cutter

6,7, because saw

cutter

6,7 overlaps and cut off.Like this, stalk is just just to cut (smear metal) into pieces with the consistent length at

adjacent saw cutter

6,6 or 7,7 same intervals.

Fixing the

screw wing

63,64 of a succession of setting on the auger 62.Cut fringe and stalk (near the straw stalk of the fringe tip) smear metal is mainly scattered on the wing 64, and the smear metal of the stem of cut-out (near surplus raft) is mainly scattered on the wing 63.To cut off between the mouth partial volume than a part between the stem and surplus raft bigger for part between the stalk stem pars intermedia and the fringe tip, considers this actual conditions, just makes fly wing to wing 63 amplitude of the wing 64 wideer.

The upper end of smear metal guide plate 65 can be bearing in the lower end of left plate 2 (near the root that cuts off) with swinging.Before combine transports, rotate smear metal guide plate 65 and be fixed on and use on the corresponding position of harvesting line number of combine of stalk cutting machine 1.Under the situation that stalk cutting machine 1 is installed in the combine that can gather in six row, smear metal guide plate 65 is fixed on the position that solid line is described among Fig. 4.When being used to cut on the five-element's the combine, then be fixed on chain-dotted line 65 ' the position on, and be used for seven the row combines on the time, then be fixed on chain-dotted line 65 " on the position of drawing; like this; adopt same smear metal guide plate 65 just same stalk cutting machine 1 can be used for the combine of different sizes, reduced production cost.

But be bearing in to the upper end left-right rotation of smear metal guide plate 66 on right plate 3 lower end of (near the fringe tip).Smear metal guide plate 66 is rotated, be fixed on its corresponding position of processing smear metal kind on.Situation for being dispersed in smear metal widely the field of having gathered in makes its outside rotation, and is fixed among Fig. 4 on the position shown in the solid line.For the field of harvesting is divided into two harvesting districts (cleave in two), or a smear metal of piling up is as feed, perhaps burn and pile up the situation of smear metal along grain header fuselage left and right sides center line, smear metal guide plate 66 and be fixed on the position of chain-dotted line 66 ' drawn turn to the inside.For dust and less smear metal are not dispersed out, lower cover 67 is set with extending downwards from the back plate of stalk cutting machine 1.As shown in Figure 4, on the medial surface of lower cover 67, be fixed with the cowling panel 69 that can carry out rectification to the distribution of smear metal.

And then, in the present embodiment, also, the waste gas that engine 81 is discharged promotes the distribution of stalk by means of causing the combine rear portion.Promptly, in the time of on the large-scale combine more than stalk cutting machine 1 being installed in the harvesting five-element, because the width of stalk cutting machine 1 is littler than combine fuselage width, and be close to and do not gather in field (with feeding chain homonymy) setting, so can not make stalk to scattering in the relative zone, gap between the field and side stalk cutting machine 1 side and combine fuselage that has gathered in.

In the present embodiment, blast pipe 82 front ends are fixed on the available engine 81 muffler installation portions, extend to the back lower place at the rear portion that follows fuselage frame 71 between left and right sides crawler belt 70a, the 70a of walking apparatus 70, its rear end is fixed on the muffler 83, and muffler 83 is fixed on fuselage frame 71 or running gear 70 vehicle frames by sheet material 84.The exhaust outlet of muffler 83 and discharge pipe 85 are connected.

Discharge pipe 85 is configured between the rear end of left and right

sides crawler belt

70a, 70a, the below towards the fringe tip processing section of stalk cutting machine 1.In more detail, be towards the surplus stubble of the 6th row from the long journey in harvesting zone not.If grain header is five-element's cutting machine, then towards the surplus stubble of fifth line, if grain header is seven row cutting machines, then towards the surplus stubble of the 7th row.See that from the side discharge pipe 85 from the grain header rear end backward.

Also have, discharge pipe 85 can also be corresponding with stalk length and towards everywhere.That is, it can change the angle that is connected on its muffler 83 outlet coupling parts.For example, can make it can freely rotate, but or become the corrugated tube shape of free bend.Like this, with regard to can by regulate discharge pipe 85 towards the spread state that changes stalk.

Discharge pipe 85 can also be replaced with other part with different openings end, can dismantle, very favourable to maintenance, the shape of its openend can make smear metal is dispersed in the fan-shaped of broad scope, also can make the pointed shape that waste gas is blown in the concentrated area in collection holds together the scope that smear metal falls.In addition, can also make it to rotate and blow out the vortex air and become turbulent flow and smear metal is dispersed in from all directions.

In this structure, the paddy of the threshing stalk that sends from stalk conveyer chain 79 is by stalk cutting machine 1 section of cutting into pieces (smear metal), drop on the spiral propeller 62, smear metal is scattered in the field of having gathered in by the

screw wing

63,64 that rotates spiral propeller 62.The waste gas that engine 81 is discharged blows to the smear metal of bulky stalk fringe and falls part, and therefore, in the field of having gathered in, smear metal meeting ratio blows waste gas and falls the Shi Gengchao outside and disperse.As a result, the stalk smear metal of cut-out all will be dispersed in the whole width range of combine fuselage.

So, after combine operation finishes, will spread all over smear metal in the field of having gathered in, nourishing face is even, and owing to there is not smear metal aggregately stacked part, can also prevent that to the field diversion time smear metal from floating.

Below, the hood 8 of the stalk cutting machine 1 that has the engine stop structure is described.As shown in Figure 7,

left side plate

2,3 upward cuts the bevel shape in the angle with the back, forms downward peristome backwards, therefrom drops into stalk and uses

saw cutter

6,7 to cut off.Hood 8 is set on this peristome.That is, hood 8 has pair of

pivot

9,9 respectively on its rear end, both sides.Pivot 9 is bearing on the

left side plate

2,3 respectively free to rotately, and the left and right sides pivot 9,9 that the front end of hood 8 can its rear end is that the center easy on and off rotates.

Right pivot 9 is outwards outstanding from right plate 3, and its outer end is fixed with pivoted arm 10.The end of cursor 10 is fixed with pin 19, and changer lever 20 rear ends are hinged on the pin 19.Operating rocker 11 is articulated in the outside of right plate 3 front upper parts with circular-arc armite 12 with the intermediate portion.Armite 12 can be with operating rocker 11 or is integrally rotated.Pin 18 is installed in the front end of armite 12, and the front end of changer lever 20 is articulated on the pin 18.Helical spring 13 is contained in operating rocker 11 and is fixed on right plate 3 slightly by configuration up and down between the support 14 on the following anterior outside, is setovered downwards in the rear end of operating rocker 11.Umbilic cord 15 can support in cable sleeve pipe 17 with being free to slide, and is installed between the front end and remote control spares such as near bar the driver's seat or button of operating rocker 11.

When straining umbilic cord 15 handling remote control spare, then resist the bias force of spring 13, the front end of operating rocker 11 is pulled down, armite 12 and operating rocker 11 unitary rotation by umbilic cord 15, press changer lever 20 backward, hood 8 is rotated and closure with cursor 10.If reversible control remote control spare, then by spring 13 rear ends of pulling operating rockers 11 downwards, hood 8 is rotating opening upwards therefrom.Like this, by the remote control that is sitting in the driver on the driver's seat hood 8 of stalk cutting machine 1 is opened and closed.

As shown in Figure 7.On changer lever 20, be equipped with engine shutdown switch 30.As shown in Fig. 8 and 9, changer lever 20 is that first bar 21, second bar 22 and the 23 front and back arow configurations of the 3rd bar are formed.First bar, 21 usefulness pins 18 are hinged with armite 12.That is, on the leading section of first bar 21, wear long through-hole 21a longitudinally, can be configured in pin 18 among the 21a of this hole with being free to slide, thereby give hood 8 remote control gaps.On first bar, 21 rear portions, be equipped with slotted hole 21b longitudinally.The rear end of first bar 21 can constitute contact site 21c, with its to the left and right direction bend to the right angle.

Second bar 22 can form recess 22a towards the direction of right plate 3, and the bending of right angle, the left and right sides forms on the middle part of front and back.Engine shutdown switch 30 just remains in second bar, the 22 recess 22a, and have forwards (on the right side of Fig. 2 and Fig. 3) outstanding experience bar 30a.Run through pair of

holes

22b, 22b on the leading section of second bar 22.First bar, 21 rear portions and second bar, 22 front portions are seen from the side,

hole

22b, 22b are configured within the slotted hole 21b with overlapping.Within hole 22b, the 22b that screw 24,24 inserts separately, run through slotted hole 21b, on the slotted hole 21b outside, each outer end screwed retaining ring is set.Collar 24a is being located within the slotted hole 21b on the screw 24, can be embedded on first bar 21 with being free to slide.

And then, wear screw 24 patchholes at first bar, 21 rear portions, also can wear the slotted hole that can embed screw 24 in the front portion of second bar 22 with being free to slide.

Like this, after first,

second bar

21,22 is linked up, the contact site 21c of first bar 21 is located between the preceding transverse slat of experiencing bar 30a and recess 22a, secondary spring 34 is contained between the preceding transverse slat of contact site 21c and recess 22a, contact site 21c is remained on the position, dead ahead of experiencing bar 30a.On the other hand, around first bar 21 narrower, helical spring 26 is set, to keep the distance between the pin 18 and second bar front end than second bar 22.The front end of spring 26 and pin 18 join, and the rear portion of spring 26 is wrapped on the place ahead protuberance of second bar, 22 front ends.

The back transverse slat of recess 22a integrally is fixed on the installing plate 22c pars intermedia.Each perforating 22d and slotted hole 22e on the front and rear part of installing plate 22c.Perforating 23a and slotted hole 23b on three bar 23 identical with installing plate 22c shape cardinal principle.In screw 32 difference patchhole each

hole

22d, 22e, be fixed tightly on the 3rd bar 23 by nut.23 on the 3rd bar should make

hole

23a, 23b be configured on the installing plate 22c with

hole

22d, 22e respectively with aiming at.Screw 32 inserts respectively among each

hole

22d, 23a, is fixed tightly on the 3rd bar 23 with nut again, and the collar 29 inserts among slotted hole 22e, the 23b free to rotately, pin 19 is inserted in the collar 29 again.Like this, pin 19 just can be free to slide in slotted

hole

22e, 23b, can give hood 8 running clearances.

This structure by means of changer lever 20, the remote control of control stick 15 that can buffer setting, when the biasing surface because of spring 13 rotates operating rocker 11 rear ends, the front end that pin 18 is pushed down slotted hole 21a, under spring 34 compressive states, make first bar 21 with second and third bar 23 to front slide.Whereby, the bottom of cursor 10 is rotated forward, hood 8 is upwards rotated, arrive the enable possition of its regulation thereupon.Under this kind state, by means of the effect than the bias force forward of spring 34 spring 26 that bias force is stronger backward, contact site 21c forwards moves in recess 22a, leaves from experiencing bar 30a.

When the inside of stalk cutting machine 1 is filled up by stalk, because the high stalk of heap is pushed hood 8 to back upper place more, cursor 10 further rotates forward, second and

third bar

22,23 is forwards slided, second bar 22 makes in screw 24 sliding scales of first bar 21 in slotted hole 21b and slides, and only makes spring 26 compressions.Because a little less than the degree that the restoring force of spring 26 pushes away first bar, 21 front ends forward by pin 18, spring 26 is maintained at compressive state.As a result, although engine shutdown switch 30 with second bar 22 to front slide, the contact site 21c of first bar 21 rests on original position, experiences bar 30a roof pressure contact site 21c and makes engine shutdown switch 30 connect the engine halt circuits.So; when hood from the regulation the enable possition further when rotate the back upper place; the engine shutdown by force by the switching of engine shutdown switch 30; thereby the blockage that can prevent stalk cutting machine 1 further worsens; when artificially hood 8 further being opened from the open position of regulation for maintenance, the switching that engine shutdown switch 30 still makes engine stop.

Conversely, when closing cover 8, when by umbilic cord 15 operating rocker 11 front ends being pulled down in remote control, armite 12 rotates to the back lower place with operating rocker 11, and pushing pin 18 rearward slides pin 18 in slotted hole 21a.Spring 26, rotates to the closed position of regulation by cursor 10 hoods 8 so second and

third bar

22,23 rearward slides down because involution is rearward extended in the slip of pin 18 by compression then.When hood 8 reaches the closed position of regulation, forwards extend because of spring 26 involutions, pin 18 is crimped on the front end of slotted hole 21a, so first bar 21 is no longer towards more rear slip.So contact site 21c just is configured in and leaves on the position of experiencing bar 30a.

When tying up stalk with the bundle hole machine that is contained in stalk cutting machine 1 rear end; hood 8 closes on the closed position of regulation; if closed hood 8 is impacted when closing position is rotated upward by stalk stream; owing to keeping second bar 22 of engine shutdown switch 30 forwards to slide with the 3rd bar 23 by cursor 10; be pressed on the contact site 21c so experience bar 30a, engine shutdown switch 30 switches and engine shutdown by force.Whereby, it is too much hood 8 to be held, and can prevent to damage because of the Ji Qu that hugs that enters strapper.

The following describes the embodiment 2 of engine shut-down mechanism, it just like the hood of opening for detection 8 shown in Figure 10 and 13 further open from the position of opening the first engine shutdown switch 30 that is provided with ', and detect closed hood 8 and open and the second engine shutdown switch that is provided with from closing position.

As shown in figure 10, cam 40 is fixed on the right pivot 9, and Tu Chu support 41 is installed in middle top, right plate 3 front and back upward.The first engine shutdown switch 30 ' be fixed on the rear end of support 41, outstanding to the back lower place.Perception bar 30 ' a is positioned on cam 40 rotary motion trace.When hood 8 when closing position is opened, cam 40 push the first engine shutdown switch 30 ' experience bar 30 ' a.

And the second engine shutdown switch 35 is fixed in left plate 2 outer upper, makes that to experience bar 35a slightly outstanding to the back upper place.Switch arm 43 is configured in the rear of experiencing bar 35a, can push with the contact chip 43a that its front end forms and experience bar 35a.The second engine shutdown switch 35 is pushed by contact chip 43a and is experienced bar 30a and circuit is opened.When being subjected to bar 30a not according to pressure sensitivity, the second engine shutdown switch 35 makes closing of circuit, and engine is stopped.

Switch arm 43 be hinged on the second engine shutdown switch 35 the rear from the outstanding pivot 42 of left plate 2 medial surfaces, side plate 2 is outstanding left from the rear portion of switch arm 43 for guide finger 44, and insert in the circular arc shaped guide slots 2a, bend inwards about the front end of switch arm 43 and form contact chip 43a.The rear portion of switch arm 43, with biasings upward such as not shown torsionsprings, guide finger 44 is configured in the upper end slot of gathering sill 2a.When the hood of opening 8 when closing position is rotated downwards because hood 8 is pressed to the below with switch arm 43, bar 35a is experienced in contact chip 43a pushing, the second engine shutdown switch 35 is opened circuit.Conversely, when hood rotated upward, switch arm 43 rotated with hood 8 upward owing to its bias force.Hood 8 leaves from switch arm 43 immediately, and switch arm 43 arrives the upper limit position that is limited by alignment pin 44, makes to experience bar 35a from contact chip 43a disengagement, and the second engine shutdown switch 35 makes closing of circuit.

For hood 8 is carried out remote control, fixed arm 49 on pivot 9, are connected on the remote control spare that opens and closes hood 8 through cable.

Figure 13 shows circuit, first and second engine shutdown switch 30 ', 35 be parallel between selector switch 47 and the engine shutdown switch 46.When hood 8 is configured in the open position that carries out the stalk cutting; though selector switch 47 be connected switch 30 ' circuit on; but because switch 30 ' access failure; so unit 46 does not switch on yet; open position from regulation under the impact of cover 8 at stalk of opening further rotates to the back upper place, gives as security when leaning against on the cam 40 switch 30 ' connection and experience bar 30 ' a; unit 46 energisings, forced engine is shut down.

Otherwise, do not cutting off that stalk is tied up or binding work and when hood 8 is disposed at closing position, though selector switch 47 on the circuit that switch 35 is arranged, switch 35 access failures are not so unit 46 switches on.Stalk cutting machine 1 makes closed hood 8 upwards rotate from the enable possition owing to filling up stalk, experiences stalk 35a and breaks away from 43 one-tenth free states of switch arm, and switch 35 is connected, and engine shutdown is forced in unit 46 energisings.

Below, the embodiment 3 of engine shut-down mechanism is described by Figure 11 and Figure 12.Identical with embodiment 2, cam 40 is fixed on the pivot 9, on the support 41 that the first engine shutdown switch 30 ' be packed in projects upwards from right plate 3 tops.Switch 30 ' experience on the rotary motion trace that bar 30 ' a then is configured in cam 40, hood 8 from the enable possition further when open the back upper place, switch 30 ' make closing of circuit.

The second engine shutdown switch 36 is fixed on the top of left plate 2 lateral surfaces.Switch 36 experience bar 36a towards the top.Identical with embodiment 2, during in closing position, experience bar 36a pressurized in hood 8 closures, and closed hood 8 when rotating upward, closing position is becoming free state.That is, experience below bar 36a pressed to by switchboard 50 when the hood that rotates 8 arrives closing positions.Open from closing position when hood 8, when leaving on the slave plate 50, make closing of circuit, force engine shutdown.Circuit as shown in Figure 13, its structure is identical with embodiment 2.

At left plate 2, be equipped with horizontal opening 2b near experiencing bar 36a, bearing 51 is fixed on the left plate 2 in switch 36 the place aheads, is fixed with the axle 52 of the axle shape of fore-and-aft direction on the bearing 51.Switchboard 51 is articulated on the axle 52, and its end is inwardly outstanding by opening 2b.This plate 50 is setovered upward by torsion spring 52, presses to the upper end of opening 2b, and when rotating when closing hood 8, plate 50 is pressed down by hood 8, and soon, pressure sensitivity is subjected to bar 36a downwards, and switch 36 makes closing of circuit.

Among the embodiment 3 of Gou Chenging, when the hood 8 of closure rotated upward because of stalk cutting machine 1 fills up stalk, the second engine shutdown switch 36 was connected like this, and engine shutdown is forced in unit 46 energisings.And the hood of opening 8 that is in the enable possition is subjected to the impact of stalk and when further opening, cam 40 is pushed down and experienced bar 30 ' a, thus connect the first engine shutdown switch 30 of access failure ', engine shutdown is forced in unit 46 energisings.

The following describes the effect of stalk cutter sweep of the present invention.

The first, because the waste gas of combine engine discharge is blown on the stalk fringe tip that has cut off that falls in the stalk cutter sweep lower end of being located at the combine rear portion, even so the stalk cutter sweep is installed under the situation of medium-sized or large-scale combine that width exceeds about this stalk cutter sweep the outside, also can be by being located at stalk cutter sweep bottom, scatter the auxilliary mutually effect of the spiral propeller that cut off stalk and exhaust winding-up effect and the stalk that has cut off is not dispersed on the field with having omission.

The gas that engine is discharged can guide with the very simple way of blast pipe that prolongation contains muffler and make it towards the below of apparatus for cutting of straws backward, therefore can improve the pattern of the cut-out stalk of combine at an easy rate.

In addition, owing to can arrange the gas that engine is discharged to atmosphere from the combine rear portion,, the exhaust noise level makes the almost unheard degree of the driver who is sitting on the combine seat so being reduced to.And, surround even also can be discharged from gas hardly under the wind state that the driver runs into that combine is in against the wind or the side is come, fool proof.

The second, in the stalk cutter sweep that the hood that can operate between closure and enable possition is located on the upper end open; be provided with when the enable possition is positioned at the hood of this closing position; or when further being opened, the hood that is positioned at this enable possition converts the switch that makes the engine forced stoppage to; so using the strapper that is configured in stalk cutter sweep rear to tie up stalk closed hood under the impact of stalk stream when closing position is opened; can force to make engine shutdown, so can make hood can not be subjected to the damage of hugging acquisition means of strapper.And, make the hood opened when this open position is further opened using the stalk cutter sweep to cut off, also can make the engine forced stoppage, worsen so can prevent that the accumulation of stalk cutter sweep from stopping up.In addition, also be same artificially hood being opened when big, it is keeped in repair this stalk cutter sweep is safe.

Claims

1. stalk cutter sweep, it is arranged at the rear portion of combine, it is characterized in that: the exhaust blast that the engine of combine is discharged is gone up slightly to the stalk fringe that has cut off that falls from this stalk cutter sweep lower end.

2. stalk cutter sweep; stalk cutter sweep for combine; it is arranged on the hood that can handle on the upper end open between closing position and enable possition; it is characterized in that: be provided with change-over switch; when it can make the hood that is in this closing position open; and the hood that is in this enable possition further opens when big, forces engine shutdown.