CN105052368A - Blocking-free chaff cutter - Google Patents
Blocking-free chaff cutter Download PDFInfo
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- CN105052368A CN105052368A CN201510474249.0A CN201510474249A CN105052368A CN 105052368 A CN105052368 A CN 105052368A CN 201510474249 A CN201510474249 A CN 201510474249A CN 105052368 A CN105052368 A CN 105052368A
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Abstract
The invention relates to a blocking-free chaff cutter. The chaff cutter comprises a first cutter shaft, wherein two ends of the first cutter shaft are respectively arranged on two side plates of a shell; one end of the first cutter shaft is connected with a first transmission unit which is arranged on one of the side plates of the shell; a first cutter and a second cutter are each arranged on the first cutter shaft; meanwhile, the chaff cutter also comprises a second cutter shaft, a first sleeve, a second sleeve and a spring, wherein two ends of the second cutter shaft are respectively arranged on the two side plates of the shell via bearing units; a third cutter is installed on the second cutter shaft; the first sleeve is arranged on the second cutter shaft and fixedly integrated with the second cutter shaft into a whole; the second sleeve is arranged on the second cutter shaft and is in clearance fit with the second cutter shaft; the first axial end of the first sleeve and the first axial end of the second sleeve abut against each other; the spring is sheathed on the second cutter shaft; and the spring is compressed and arranged between the second sleeve and the bearing units or the shell. The blocking-free chaff cutter provided by the invention can prevent cut materials from blocking in a chaff cutter.
Description
Technical field
The present invention relates to the tangerine bar treating apparatus after a kind of grain header harvesting grain, especially a kind of stalks cutting exempted from stifled chaffcutter, belong to agricultural machinery technological field.
Background technology
If the stalk length stayed after combine harvesting crop is long, peasant household generally adopts the method cleaning field of crop straw burning, produce a large amount of flue dust severe contamination air during crop straw burning, the carbonic acid gas of burning and exhausting increases the content of carbonic acid gas in air, exacerbates greenhouse effect; Run in the opposite direction with the environmental requirement reducing CO2 emission in air.
In order to avoid there is status, existing combine adopts low stubble to gather in crop, reduces the stalk height stayed in farmland, makes it burn.Simultaneously, the stalk length that combine is cut off is longer, sheds in farmland, when tractor is ploughed after having to pass through the chaffcutter device chopping of combine, the stalk stayed in farmland and broken grass are ploughed under in soil and uses fertilizer as, fundamentally could stop crop straw burning.
As shown in Figure 7, existing combine chaffcutter device adopts the arrangement of quaternate blade unit crisscross along axle sleeve radial direction, and blade unit, axle sleeve axially spaced-apart arrangement six row, is often organized blade unit and had 4 knife sections, have 24 knife sections altogether.In order to increase chopping result, can be reached by the quantity increasing rotating speed and cutter, but when feeding is uneven and crop humidity time there will be blocking and cause drive disk assembly to damage.In addition be can be wrapped on movable arbor when feeding crop long, long-time use there will be resistance and increases and occur resistance, affects operating efficiency.Although this chaffcutter device improves its broken careless performance by strengthening the chaffcutter device speed of mainshaft, the stalk length of cut-out, at about 15mm, cannot reach the object in effectively also field.And the mount pad installing knife section is fixed by welding on axle sleeve, due to when chaffcutter, suffered by knife section and axle sleeve, resistance is very large, after Long-Time Service, easily cause the weld of mount pad and axle sleeve to rupture, cause the negative consequence that mount pad flies out together with knife section.
In addition, because the rotating shaft diameter driving moving knife to rotate is little, when the tangerine bar inputted or cut-off tangerine bar are easily wrapped in rotating shaft, such as, the diameter of rotating shaft is 150mm, the length of tangerine bar is 200mm or more, length due to tangerine bar is greater than the diameter of rotating shaft, therefore, tangerine bar is easily caused easily to be wrapped in rotating shaft, but, interfere if formed with housing after rotating shaft enlarged-diameter being caused installation moving knife, or increase volume and the quality of complete machine, the load of tractor certainly will be strengthened like this, therefore, the diameter of rotating shaft can only be selected within the limits prescribed.
In addition, when the amount to the tangerine bar in chaffcutter device inputted is excessive, because ledger-plate adds by bolt or bearing pin the bottom that backing plate is directly locked at housing, when tangerine bar is blocked between knife section and ledger-plate, tangerine bar cannot be shredded, and the spacing between ledger-plate and dynamic knife section cannot change, the tangerine bar of blocking cannot be drained in time, cause overload and cause damaging transmission device.
Summary of the invention
For the defect of prior art, the invention provides one and exempt from stifled chaffcutter, the present invention can prevent cut material material to be blocked in chaffcutter.
The present invention is achieved through the following technical solutions:
Exempt from stifled chaffcutter, comprise housing, first cutter shaft, first transmission device, first cutting knife, second cutting knife and the 3rd cutting knife, the two ends of the first cutter shaft are arranged on two side plates of housing respectively, one end of first cutter shaft is connected with the first transmission device, first transmission device is arranged on one of them side plate of housing, first cutting knife, second cutting knife is separately positioned on the first cutter shaft, also comprise the second cutter shaft, first sleeve, second sleeve and spring, the two ends of the second cutter shaft are arranged on two side plates of housing respectively by bearing arrangement, described 3rd cutting knife is arranged on the second cutter shaft, first sleeve is on the second cutter shaft and be fastened as a whole with the second cutter shaft, second sleeve on the second cutter shaft and with the second cutter shaft matched in clearance, first axial end of the first sleeve and the first axial end of the second sleeve mutually against, described spring housing is on the second cutter shaft, spring is compressed between the second sleeve and bearing arrangement or housing.
First axial end of described first sleeve and/or the first axial end of the second sleeve be at least provided with one domatic.
Along described end face circumferentially domatic is at least two for domatic on described first sleeve and/or the second sleeve, and adjacent two domatic Po Feng and slope paddy are connected.
The side face of described second sleeve is provided with block, and the side face of this block is provided with groove, and one end of a connecting rod is fixedly connected with housing or bearing arrangement, and the other end of connecting rod is through the groove on block.
Between the second cutter shaft and the first sleeve and the second sleeve, set up the 3rd sleeve, the 3rd sleeve and the second cutter shaft are fixed as one, and first set and the 3rd sleeve are fastened as a whole, the second sleeve and the 3rd sleeve matched in clearance.
A part on the outer circumference surface of described 3rd sleeve is provided with screw thread, and described first sleeve is fastened as a whole by screw thread and the 3rd sleeve.
Described 3rd cutting knife comprises cutter hub, and the axial end of this cutter hub is provided with through hole, cutter hub be circumferentially at least provided with two blades.
At least also comprise two the first tool rests, first tool rest is provided with axis hole, the axial end of the first tool rest is provided with the first through hole, each first cutting knife is separately fixed on the first tool rest, first cutting knife is provided with through hole, and first pull bar passes from the first through hole the first tool rest and the through hole on the first cutting knife successively.
At least also comprise two the second tool rests, second tool rest is provided with axis hole, the axial end of the second tool rest is provided with the second through hole, second tool rest to be enclosed within the first cutter shaft and after being fixed as one with the first cutter shaft, first tool rest and the second tool rest are arranged along the axis of the first cutter shaft in replacing, and the first through hole and the second through hole stagger mutually; Each second cutting knife is separately fixed on the second tool rest, and the second cutting knife is provided with through hole, and second pull bar passes from the second through hole the second tool rest and the through hole on the second cutting knife successively.
The outer surface of the first tool rest and the second tool rest is all at least provided with two projections radially extended, described first through hole is positioned in the projection on the first tool rest, second through hole is positioned in the projection on the second tool rest, first blade is fixed in the projection of the first tool rest, and the second blade is fixed in the projection of the second tool rest.
Have employed such scheme, after the present invention passes through to have installed the first sleeve, the second sleeve and spring on the second cutter shaft, by the tension force of spring and the friction force between the first sleeve and the second sleeve, when chaffcutter normally works, first cutting knife and the shear force produced between the second cutting knife and the 3rd cutting knife, cannot overcome the tension force of spring and the friction force between the first sleeve and the second sleeve, thus the second cutter shaft can not rotate.When cut material material blocks, first cutting knife and the shear force produced between the second cutting knife and the 3rd cutting knife, overcome the tension force of spring and the friction force between the first sleeve and the second sleeve, thus the second cutter shaft is rotated, the 3rd cutting knife is driven to rotate an angle, cut material material is discharged to chaffcutter outside along with when the 3rd cutting knife rotates, thus avoids the inside of the blocked chaffcutter of material.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 is the schematic diagram of the first tool rest in the present invention;
Fig. 4 is the schematic diagram of the 3rd cutting knife;
Fig. 5 is the A portion enlarged drawing in Fig. 1;
Fig. 6 is the profile of Fig. 5;
Fig. 7 is the schematic diagram of the first sleeve in Fig. 6;
Fig. 8 is the schematic diagram of the second sleeve in Fig. 6;
Fig. 9 is the schematic diagram of the 3rd sleeve in Fig. 6;
Figure 10 is the schematic diagram of chaffcutter device of the prior art.
1 is housing, 1a is side plate, 1b is base plate, 1c is extension, 2 is the first cutter shaft, 3 is the first transmission device, 4 is the first cutting knife, 5 is the second cutting knife, 6 is the 3rd cutting knife, 6a is cutter hub, 6b is through hole, 6c is blade, 7 is the first tool rest, 7a is axis hole, 7b is the first through hole, 7c is protruding, 7d is the first installing hole, 8 is the second tool rest, 9 is the first pull bar, 10 is the second pull bar, 11 is the second cutter shaft, 11a is bearing block, 11b is bearing, 11c is tool rest, 12 is the first sleeve, 12a is domatic, 12b is key, 13 is the second sleeve, 13a is domatic, 13b is block, 13c is groove, 14 is spring, 15 is the 3rd sleeve, 15a is key, 15b is nut, 16 is spacer, 17 is connecting rod.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
As depicted in figs. 1 and 2, of the present inventionly exempt from stifled chaffcutter, comprise housing 1, first cutter shaft 2, first transmission device 3, first cutting knife 4, second cutting knife 5, the 3rd cutting knife 6, first tool rest 7 and the second tool rest 8 and the second cutter shaft 11, first sleeve 12, second sleeve 13 and spring 14, is described in detail to the relation between every part and each several part below:
As shown in Figure 1, the two ends of the first cutter shaft 2 are arranged on two side plate 1a of housing 1 respectively, one end of first cutter shaft 2 is connected with the first transmission device 3, first transmission device 3 comprises belt pulley, this belt pulley is fixed on the end of the first cutter shaft, first transmission device also comprises a strainer, this strainer is by axle sleeve, first pole, second pole, regulating wheel and extension spring composition, axle sleeve is enclosed within the first cutter shaft, one end of first pole is fixed on the periphery of axle sleeve, the other end of the first pole is connected with one end of the second pole, described regulating wheel is connected to the other end of the second pole by bearing, the axis of the second pole is parallel with the axis of the first cutter shaft 2, one end of extension spring is connected on the drag hook that is fixed on housing 1 side wall surface, the other end of extension spring is connected with the first pole.
First transmission device can also adopt the mechanism such as gear drive, Chain conveyer.
As shown in figures 1 and 3, in present embodiment, have employed 7 the first tool rests 7, and have employed 7 the second tool rests 8; First tool rest 7 and the second tool rest 8 are equipped with axis hole 7a, the axial end of the first tool rest 7 is provided with the first through hole 7b, the axial end of the second tool rest 8 is provided with the second through hole, first tool rest 7 and the second tool rest 8 are enclosed within the first cutter shaft 2 and after being fixed as one with the first cutter shaft 2, the first through hole and the second through hole stagger mutually.
As shown in figures 1 and 3, the outer surface of the first tool rest 7 and the second tool rest 8 is all at least provided with two protruding 7c radially extended, preferably, in the present embodiment, all with three projections uniformly at intervals of 120 degree on the outer surface of the first tool rest 7 and the second tool rest 8, one end be connected with the first tool rest 7 of protruding 7c is root, the other end is free end, root to its free end of protruding 7c is narrow gradually, cause the cross section of protruding 7c roughly in trapezoidal shape, between the free end and an one sidewall of protruding 7c, carry out transition by chamfering.After the first tool rest 7 and the second tool rest 8 and the first cutter shaft 2 are fixed as one, protruding 7c on first tool rest 7 and the raised position on the second tool rest stagger mutually, namely the protruding 7c on the first tool rest 7, corresponding between the interval that two on the second tool rest 8 are protruding, equally, projection on second tool rest 8, between interval corresponding to two protruding 7c on the first tool rest 7, because protruding 7c is for installing with a cutting knife and the second cutting knife, therefore, the benefit that this dislocation is arranged is, the first cutting knife and the second cutting knife can not be allowed simultaneously to the operation that tangerine bar shreds, but have regular hour difference or sequencing, the burden of the first cutter shaft and the first transmission device can be alleviated like this.Described first through hole 7b is positioned on the protruding 7c on the first tool rest 7, similarly, the second through hole is positioned in the projection on the second tool rest 8, because the raised position on the protruding 7c on the first tool rest 7 and the second tool rest 8 staggers mutually, thus also stagger mutually in the position of the first through hole 7b and the second through hole.
As shown in Figure 3, the projection of the first tool rest 7 is also provided with two the first installing hole 7d, spacing between the center of two the first installing holes and the first tool rest 7 axis hole 7a center is unequal, described first through hole 7b is between two the first installing hole 7d, spacing between first through hole 7b and axis hole 7a center, between the center of two the first installing hole 7d and the first tool rest 7 axis hole 7a centre distance, therefore, two the first installing hole 7d and the arrangement mode of the first through hole 7b on protruding 7c are, close to the root of this protruding 7c by the free end near protruding 7c, and the line of centres in three holes is not on same straight line.The projection of the second tool rest 8 is also provided with two the second installing holes, second through hole is between two the second installing holes, spacing between the center of two the second installing holes and the second tool rest axis hole center is unequal, the arrangement mode of the second installing hole and the second through hole is identical with the arrangement mode of the first through hole 7b with the first installing hole 7d.
As shown in figures 1 and 3, the first cutting knife 4, second cutting knife 5 is autogenous grinding cutting edge cutting knife.One end of each the first cutting knife 4 is separately fixed on the first tool rest 7, and preferably, the first cutting knife 4 is bolted on the protruding 7c of the first tool rest.One end of each the second cutting knife 5 is separately fixed on the second tool rest 8, and preferably, the second cutting knife 5 is bolted in the projection of the second tool rest 8.Each first cutting knife 4 is provided with through hole, and first pull bar 9 passes from the first through hole 7b the first tool rest 7 and the through hole on the first cutting knife successively, by the first pull bar, is together in series by the first cutting knife 4 be positioned on same axis.Each second cutting knife 5 is provided with through hole, and second pull bar 10 passes from the second through hole the second tool rest 8 and the through hole on the second cutting knife successively.By the second pull bar 10, the second cutting knife 5 be positioned on same axis is together in series.Because the first cutting knife 4 and the second cutting knife 5 are fixed on after on protruding 7c, the rotation of the first cutter shaft 2 finally drives the first cutting knife 4 and the second cutting knife 5, and therefore the first cutting knife 4 and the second cutting knife 5 are equivalent to dynamic cutting knife.
The present invention owing to being set with at the first tool rest 7 and the second tool rest 8 on the first cutter shaft, first cutting knife 4 is arranged on after on the first tool rest 7, be together in series being positioned at same the first cutting knife 4 axially with the first pull bar 9, second cutting knife 5 is arranged on after on the second tool rest 8, connect being positioned at same the second cutting knife 5 axially with the second pull bar 10, such assembly structure, even if the connection of a certain first cutting knife 4 and the first tool rest 7 loosens or ruptures, or the connection of a certain second cutting knife 5 and the second tool rest 8 loosens or ruptures, because tool rest and pull bar still remain annexation, therefore, first cutting knife 4 or the second cutting knife 5 can not outwards fly out, thus ensure that the safety of chaffcutter device.And, first cutting knife 4 of the present invention and the dislocation of the second cutting knife 5 are arranged, add the reliability of above-mentioned connection, therefore relative to the chaffcutter device in background technology, more cutting knife can be arranged, can make like this in the course of work, the crops such as tangerine bar to be cut more broken, the present invention is through overtesting, and the length of the crops such as the tangerine bar after chopping is 5-10mm, relative to the chaffcutter device in background technology, its length obtains effective shortening, thus is more conducive to also field.In addition, because the first pull bar 9 and the second pull bar 10 are round rotating shaft, the diameter of the first pull bar 9 and the second pull bar 10 place circumference is greater than the diameter of rotating shaft 2, the diameter of the first pull bar 9 and the second pull bar 10 place circumference is greater than the length of the materials such as inputted tangerine bar, therefore, avoiding tangerine bar by such frame mode is wrapped in rotating shaft, meanwhile, when it also avoid design by expand rotating shaft diameter and bring as the unfavorable factor in background technology.
As shown in Figure 1, Figure 2 and Figure 4, after on the two ends of described second cutter shaft 11 are arranged on housing 1 two side plate 1a respectively by bearing arrangement, the axis of the second cutter shaft 11 and the axis of the first cutter shaft 2 are parallel to each other, and the second cutter shaft 11 is positioned at the below of the first cutter shaft 2.Two side plates on housing 1 are respectively to downward-extension, form the extension 1c exceeding this Housing Base 1b, described bearing arrangement is arranged on extension 1c, like this, when the second cutter shaft 11 two ends are arranged on after on bearing arrangement respectively, the second cutter shaft 11 is positioned at the containment portion of housing 1.Described bearing arrangement is made up of bearing block 11a and bearing 11b, and bearing block 11a is fixed on extension 1c, and bearing 11b is fixed in bearing block 11a.Bearing arrangement also can be made up of bearing separately, is arranged on by this bearing in the axis hole on extension 1c, by baffle plate or other modes, bearing is carried out axial limiting.3rd cutting knife 6 is arranged on the second cutter shaft 11, and the second cutter shaft 11 is provided with tool rest 11c, and tool rest 11c is provided with through hole, and tool rest 11c is enclosed within after on the second cutter shaft 11, by welding mode and the second cutter shaft 11 be fastened as a whole.3rd cutting knife 6 comprises cutter hub 6a, and the axial end of this cutter hub 6a is provided with through hole 6b, and cutter hub 6a is enclosed within after on the second cutter shaft 11, by bolt and tool rest 11 to be fastened as a whole.Cutter hub 6a is circumferentially at least provided with two blade 6c, and in present embodiment, cutter hub 6a is circumferentially provided with three blade 6c.3rd cutting knife 6 is enclosed within after on the second cutter shaft 11, also can directly be integrated by being welded and fixed with the second cutter shaft 11, or adopts nut to clamp.
As shown in Figure 1, Figure 2, shown in Fig. 5 to Fig. 9, conveniently install and overhaul with pole, second cutter shaft 11 is fixed on after on bearing arrangement, wherein one end of second cutter shaft reaches the outside of extension 1c, the first sleeve 12, second sleeve 13 and spring 14 is arranged on the second cutter shaft 11 and reaches in the part outside extension 1c.First sleeve 12 to be enclosed within the second cutter shaft 11 and to be fastened as a whole with the second cutter shaft 11, second sleeve 13 to be enclosed within the second cutter shaft and with the second cutter shaft matched in clearance, the 3rd sleeve 15 (as Fig. 6) is set up between the second cutter shaft 11 and the first sleeve 12 and the second sleeve 13,3rd sleeve 13 and the second cutter shaft 11 are fixed as one, first sleeve 12 and the 3rd sleeve 15 are fastened as a whole, the second sleeve and the 3rd sleeve matched in clearance.The outer circumference surface of the 3rd sleeve 15 is provided with keyway, and the first sleeve 12 is fastened on the 3rd sleeve 15 by key 12b circumference.The outer circumference surface of the 3rd sleeve 15 is provided with screw thread partially, after the first sleeve 12 is connected by key 15a with the 3rd sleeve 15, is connected the second axial end axial limiting of the first sleeve 12 with the 3rd bush whorl by nut 15b.The inner peripheral surface of the 3rd sleeve 15 is provided with keyway, and the 3rd sleeve 15 is anchored on the second cutter shaft 11 by key circumference.The endoporus of the 3rd sleeve 15 is a stepped hole, and the 3rd sleeve 15 and the second cutter shaft 11 circumference are connected on the second cutter shaft 11 by nut and carry out axial limiting to the 3rd sleeve 15 after fixing.A spacer 16 is enclosed within the second cutter shaft 11, and this spacer 16 is between the 3rd sleeve 15 and bearing 11b, and one end of spacer 16 forms axial location to the other end of the 3rd sleeve 15, and the other end of spacer 16 forms axial location to bearing 11b.
As Fig. 5, shown in Fig. 7 and Fig. 8, first axial end of the first sleeve 12 and the first axial end of the second sleeve 13 mutually against, preferably, first axial end of described first sleeve 12 and/or the first axial end of the second sleeve 13 are at least provided with a domatic 12a, 13a, domatic 12a, 13a raises from slope paddy to form peak, slope step by step, domatic can be one, two, three, four etc., concrete quantity is determined according to the same blade 6c circumferentially of the second cutter shaft 11, such as, same circumferentially only have a blade, so domatic is one, if two blades, so domatic is two, the rest may be inferred.Preferably, along described end face circumferentially domatic is three for domatic on the first sleeve 11 and the second sleeve 13, and adjacent two domatic Po Feng and slope paddy are connected.Slope paddy on peak, slope on first sleeve 12 and the second sleeve 13 matches, and the peak, slope on the slope paddy on the first sleeve 12 and the second sleeve 13 matches.
Described spring 14 is enclosed within the second cutter shaft 11, and spring 14 is compressed between the second sleeve 13 and bearing arrangement or housing 1.As shown in Figure 6, spring 14 is enclosed within spacer 16.The side face of described second sleeve 13 is provided with block 13b, preferably, block 13b and the second sleeve 13 one-body molded, certainly, block 13b also can adopt key and the second sleeve 13 circumference fixing, and adopt nut and the second sleeve to form axial location.After the side face of the second sleeve 13 arranges block 13b, one end of spring 14 is resisted against on block 13b, and the other end of spring is supported on bearing block 11a.Ringwise, block 13b is provided with step towards the axial end of spring to block 13b, and the side face of described block 13b is provided with groove 13c.One end of a connecting rod 17 is fixedly connected with housing or bearing arrangement (preferably, this end of connecting rod 17 is fixedly connected with bearing block 11a), and the other end of connecting rod 17 is through the groove 13c on block.Be embedded into after in corrie groove 13c by connecting rod 17, can rotate by anti-stop block 13b, thus prevent the second sleeve 13 from rotating.The periphery of block 13b is provided with projection, and described groove 13c is positioned in described projection, can select the feelings subordinate of larger spring like this, avoid spring and connecting rod 17 to interfere.
The course of work of this part is: when normally working, due between the first sleeve 12 and the 3rd sleeve 13 against, and under the tension force effect of spring 14, the first sleeve 12 and the 3rd sleeve 13 is made to form close contact, first sleeve 12 and the 3rd sleeve 13 also exist larger frictional force, again due to the second cutter shaft 11 and the first sleeve 12 circumference fastening, therefore, the second cutter shaft 11 will rotate the frictional force that must must overcome between the first sleeve 12 and the 3rd sleeve 13.When external force cannot overcome above-mentioned frictional force, the second cutter shaft 11 can not rotate, and therefore, the 3rd cutting knife 6 is stationary knife.And the first cutting knife 4 and the second cutting knife 5 rotate under the driving of the first transmission device 3, namely the first cutting knife 4 and the second cutting knife 5 are moving knife.After the materials such as tangerine bar enter into chaffcutter, material at the first cutting knife 4 and the 3rd cutting knife 6, and is cut off between the 3rd cutting knife 6 and the second cutting knife 5.Material is when cut-off, and the active force be delivered on the second cutter shaft 11 cannot overcome the frictional force between the first sleeve 12 and the 3rd sleeve 13, and therefore, the second cutter shaft 11 can not rotate.
After the materials such as tangerine bar enter into chaffcutter, because material is too much or toughness is excessive, when causing the rotation of the first cutting knife 4 and the second cutting knife 5 material cannot be cut off, at this moment material can be blocked in the first cutting knife 4 and the 3rd cutting knife 6 and between the second cutting knife 5 and the 3rd cutting knife 6, because the power of the first transmission device 3 is carried on the first cutting knife 4 and the second cutting knife 5 by the first cutter shaft constantly, therefore, first cutting knife 4 and the second cutting knife 5 pairs of materials also continue in loading shear force, these active forces are delivered on the second cutter shaft 11 by the 3rd cutting knife 6, this active force is passed to the first sleeve 12 by key 12b by the second cutter shaft 11, after in force transmission during blocking to the first sleeve 12, this active force is owing to being greater than the frictional force between the first sleeve 12 and the second sleeve 13, therefore, after the active force overcome friction of the first transmission device, second cutter shaft 11 drives the first sleeve 12 to rotate (rotation direction of above-mentioned first cutter shaft and the second cutter shaft as denoted by the arrows in fig. 2).Due to the first sleeve and the second sleeve mutually against face be domatic, therefore, when the first sleeve 12 rotates, rely on its domatic 12a to make the effect of domatic 13a make the second sleeve 13 along the axial displacement of the second cutter shaft 11, the tension force overcoming spring 14 makes spring 14 compress.While second cutter shaft 11 rotates, 3rd cutting knife 6 is followed the second cutter shaft 11 and is rotated, when turning to the space making material between two adjacent 3rd cutting knifes, material is sent to outside chaffcutter under the promotion of the first cutting knife 4 and the second cutting knife 5, thus blocking is eliminated, at this moment, the radian that the first sleeve 12 rotates is just in time a domatic radian.Spring 14 resets, and promote the second sleeve 13 and reset, normal operating conditions got back to by chaffcutter.
First axial end of the first sleeve 12 and the first axial end of the second sleeve 13 mutually against structure, be not limited to above-mentioned embodiment, the mode of plane can also be selected, namely the end face of the first axial end of the first sleeve 12 and the first axial end of the second sleeve 13 is plane, relies on the tensile force of spring that the frictional force between the first sleeve 12 and the second sleeve 13 is increased.Or the first axial end of the first sleeve 12 is conehead, and the first axial end of the second sleeve 13 is set to taper hole, by coordinating of conehead and taper hole, not only axially obtaining friction force, and both circumferences also can obtain friction force.These two kinds of modes are due to the obstruction not as domatic in above-mentioned embodiment, therefore, in the process of actual chaffcutter, second cutter shaft is when stressed, likely can rotate (if the tension force of spring is enough large, make the frictional force between the first sleeve and the second sleeve very large, also can not rotate under normal circumstances), but due to the frictional force existed between the first sleeve and the second sleeve, the rotating speed of the second cutter shaft is far below the rotating speed of the first cutter shaft, therefore, make the 3rd cutting knife 6 and there is speed degree between the first cutting knife 4 and the second cutting knife 5, material can be cut off in the same old way.Such cooperation is rotated owing to making the second cutter shaft occur when chaffcutter, therefore, avoids the blocking of material.
Above-mentioned first sleeve 12 and the second sleeve 13 can also adopt other irregular mating surfaces to carry out and coordinate (such as curved surface).
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. exempt from stifled chaffcutter, comprise housing, first cutter shaft, first transmission device, first cutting knife, second cutting knife and the 3rd cutting knife, the two ends of the first cutter shaft are arranged on two side plates of housing respectively, one end of first cutter shaft is connected with the first transmission device, first transmission device is arranged on one of them side plate of housing, first cutting knife, second cutting knife is separately positioned on the first cutter shaft, it is characterized in that: also comprise the second cutter shaft, first sleeve, second sleeve and spring, the two ends of the second cutter shaft are arranged on two side plates of housing respectively by bearing arrangement, described 3rd cutting knife is arranged on the second cutter shaft, first sleeve is on the second cutter shaft and be fastened as a whole with the second cutter shaft, second sleeve on the second cutter shaft and with the second cutter shaft matched in clearance, first axial end of the first sleeve and the first axial end of the second sleeve mutually against, described spring housing is on the second cutter shaft, spring is compressed between the second sleeve and bearing arrangement or housing.
2. according to claim 1ly exempt from stifled chaffcutter, it is characterized in that: the first axial end of described first sleeve and/or the first axial end of the second sleeve be at least provided with one domatic.
3. according to claim 2ly exempt from stifled chaffcutter, it is characterized in that: along described end face circumferentially domatic is at least two for domatic on described first sleeve and/or the second sleeve, adjacent two domatic Po Feng and slope paddy are connected.
4. according to claim 1ly exempt from stifled chaffcutter, it is characterized in that: the side face of described second sleeve is provided with block, the side face of this block is provided with groove, and one end of a connecting rod is fixedly connected with housing or bearing arrangement, and the other end of connecting rod is through the groove on block.
5. according to claim 1ly exempt from stifled chaffcutter, it is characterized in that: between the second cutter shaft and the first sleeve and the second sleeve, set up the 3rd sleeve, 3rd sleeve and the second cutter shaft are fixed as one, first set and the 3rd sleeve are fastened as a whole, the second sleeve and the 3rd sleeve matched in clearance.
6. according to claim 5ly exempt from stifled chaffcutter, it is characterized in that: the part on the outer circumference surface of described 3rd sleeve is provided with screw thread, described first sleeve is fastened as a whole by screw thread and the 3rd sleeve.
7. according to claim 1ly exempt from stifled chaffcutter, it is characterized in that: described 3rd cutting knife comprises cutter hub, and the axial end of this cutter hub is provided with through hole, cutter hub be circumferentially at least provided with two blades.
8. according to claim 1ly exempt from stifled chaffcutter, it is characterized in that: at least also comprise two the first tool rests, first tool rest is provided with axis hole, the axial end of the first tool rest is provided with the first through hole, each first cutting knife is separately fixed on the first tool rest, first cutting knife is provided with through hole, and first pull bar passes from the first through hole the first tool rest and the through hole on the first cutting knife successively.
9. according to claim 8ly exempt from stifled chaffcutter, it is characterized in that: at least also comprise two the second tool rests, second tool rest is provided with axis hole, the axial end of the second tool rest is provided with the second through hole, second tool rest to be enclosed within the first cutter shaft and after being fixed as one with the first cutter shaft, first tool rest and the second tool rest are arranged along the axis of the first cutter shaft in replacing, and the first through hole and the second through hole stagger mutually; Each second cutting knife is separately fixed on the second tool rest, and the second cutting knife is provided with through hole, and second pull bar passes from the second through hole the second tool rest and the through hole on the second cutting knife successively.
10. according to claim 8 or claim 9 exempt from stifled chaffcutter, it is characterized in that: the outer surface of the first tool rest and the second tool rest is all at least provided with two projections radially extended, described first through hole is positioned in the projection on the first tool rest, second through hole is positioned in the projection on the second tool rest, first blade is fixed in the projection of the first tool rest, and the second blade is fixed in the projection of the second tool rest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474249.0A CN105052368B (en) | 2015-08-05 | 2015-08-05 | Exempt from stifled chaffcutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474249.0A CN105052368B (en) | 2015-08-05 | 2015-08-05 | Exempt from stifled chaffcutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105052368A true CN105052368A (en) | 2015-11-18 |
| CN105052368B CN105052368B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510474249.0A Active CN105052368B (en) | 2015-08-05 | 2015-08-05 | Exempt from stifled chaffcutter |
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| Country | Link |
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| CN (1) | CN105052368B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109451958A (en) * | 2018-11-06 | 2019-03-12 | 常州汉森机械股份有限公司 | The mowing-apparatus and grass trimmer of automatic beat |
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| CN201742747U (en) * | 2010-05-21 | 2011-02-16 | 周鹏 | Rice and wheat straw cutting machine |
| CN104718899A (en) * | 2013-12-23 | 2015-06-24 | 江苏江淮动力股份有限公司 | Blocking protector for header |
| CN204860079U (en) * | 2015-08-05 | 2015-12-16 | 常州汉森机械有限公司 | Exempt from stifled chaffcutter |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003101180A2 (en) * | 2002-06-03 | 2003-12-11 | Gilles Denis | Brush cutter |
| CN201571355U (en) * | 2009-12-07 | 2010-09-08 | 江苏常发锋陵农业装备有限公司 | Straw chopping returning machine used for longitudinal axial-flow harvester |
| CN201742747U (en) * | 2010-05-21 | 2011-02-16 | 周鹏 | Rice and wheat straw cutting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109451958A (en) * | 2018-11-06 | 2019-03-12 | 常州汉森机械股份有限公司 | The mowing-apparatus and grass trimmer of automatic beat |
| CN109451958B (en) * | 2018-11-06 | 2024-03-26 | 常州汉森机械股份有限公司 | Automatic deflection mowing device and mowing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105052368B (en) | 2016-12-07 |
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Address after: 213034 Changzhou Hansen Machinery Co., Ltd. No. 89, No. 4 Environmental Protection Road, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou Hansen Machinery Co., Ltd. Address before: 213034 Changzhou Hansen Machinery Co., Ltd. No. 89, No. 4 Environmental Protection Road, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province Patentee before: Changzhou Hansen Machinery Co., Ltd. |
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