CN1141715A - Backing device of power tilling machine - Google Patents
Backing device of power tilling machine Download PDFInfo
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- CN1141715A CN1141715A CN 96108922 CN96108922A CN1141715A CN 1141715 A CN1141715 A CN 1141715A CN 96108922 CN96108922 CN 96108922 CN 96108922 A CN96108922 A CN 96108922A CN 1141715 A CN1141715 A CN 1141715A
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- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 description 28
- 230000007935 neutral effect Effects 0.000 description 17
- 230000008878 coupling Effects 0.000 description 11
- 238000010168 coupling process Methods 0.000 description 11
- 238000005859 coupling reaction Methods 0.000 description 11
- 238000009313 farming Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000036651 mood Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/02—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on horizontal shaft transverse to direction of travel
- A01B33/027—Operator supported tools, e.g. using a harness for supporting the tool or power unit
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
Disclosed is a shunting back device for a power tiller, comprising a manual control lever whose lifting angle can be adjusted among a series of positions, and an arrester used in shunting back. The arrester loosens only when the lifting angle of the manual control lever is reducing. When the lifting angle of the manual control lever is big, the arrester contacts with the manual control lever, thus preventing the gearlever from moving to the reverse gear. Only when the lifting angle of the manual control lever is reducing, can the arrester loosen to enable the gearlever to move to the reverse gear.
Description
The present invention relates to a kind of regression device of power tiller, this device reacts on regression (oppositely walking), when the lifting/lowering angle that makes regression only betide control stick reduces, thereby might improve the safety of handling in the regression process.
In legged power tiller (engine is housed), after engine starts, for operating this power tiller power tiller is advanced, the operator makes clutch, method is to hold with a firm grip one to be installed in the clutch lever at the contiguous place of an action bars grip, and this control stick is positioned at the rear portion of power tiller.And if the operator presses a button on the clutch lever, clutch promptly is fixed, and power tiller enters the state of continued operation.On the other hand, when needing the separator clutch, if the operator is stretched to finger button and operated on it when holding clutch lever, the stationary state of clutch lever promptly is cancelled, and if clutch lever is thrown off, clutch just separates automatically.In addition, if make its joint by operated clutch (main clutch and an assisted clutch).Power tiller just is placed in the state of continued operation.To make clutch separation in the case, just can operate a clutch lever that is installed in the contiguous place of control stick grip by operator's finger.When this power tiller leans on the power regression, if the drive-train means of power tiller is in the regression state.And clutch lever is clamped, clutch, and the rotor of power tiller and analog and driving wheel rotate backward, just can make the power tiller regression.
In operation, producing under the situation of unsafe condition, if clutch lever is separated, just clutch is separable owing to the power tiller regression.In addition, a switch is housed near power tiller control stick grip, is used to open and close the power supply of engine.Simultaneously, a button or analog, the power supply that is used to kill engine are equipped with in an appropriate location on control stick.
In addition, when if power tiller is caused danger situation by the power regression, (finger) just can be handled foregoing switch or the switch of this power tiller and operator's health are come in contact if the operator makes a stretch of the arm, thereby the power supply of de-activation engine makes engine stop.In addition, also have another kind of power tiller, its king-rod handle is positioned at a part of separating with power tiller executor grip, and when the action bars handle, velocity of recession slows down gradually.Therefore, can utilize the control stick of power tiller to deal with unsafe condition as far as possible.
In addition, when the power tiller regression, the reaction force of generation turns forward the body of power tiller, thereby there is a sensor to survey this inclination in a kind of power tiller of having invented engine is stopped.In addition, when power tiller leans on the power regression, for reducing the danger that consequent reaction force causes, the power tiller that existing market is sold and used, no matter be the big or middle or ting model of this kind rotary power tiller, its center of gravity (suffered gravity) all is positioned at the position after extremely leaning on.
Can see a kind of power tiller in addition, wherein one be installed in the partly nearly hand clutch at contiguous place (or separation) of grip, a main clutch is suitable for engaging (or separation) with the interlocking form.In addition, existing a kind of power tiller wherein is contained in regression speed change restricted part in the speed change clutch operation part, thereby prevents that regression from causing danger.In addition, some rotary power tillers are equipped with a kind of mechanical device, and this device only just allows regression to take place when gear is in neutral position.In addition, there is critical defect in the operation in these situations, and operation is difficult to work when emergency.
When power tiller relied on its power mobile backward, the situation of farming tractor-ploughing cutter in the rotation of operator dead ahead can appear.And if operator's slip or fall down, operator's health might be ploughed cutter or analog incised wound.Similarly, the operator can occur and be pressed onto upright trees, the situation of a stifled stone walling, embankment, a greenhouse column or other similar bar.When the operation of the top on the abrupt slope of a slice crop ped location, even the situation that the operator together throws from the gully with power tiller can occur, fatal accident takes place in the result under extreme case.Therefore, above-mentioned improvement and invention have appearred.However, when regression as shown in figure 25, part is because driving wheel speed is lower, and reaction force Q is very big, and because center of gravity side shifting before power tiller suddenly, and this reaction force lifts the operating grip of power tiller and almost straight up.When therefore the operator produces the unstable of health and discover danger, the operator will hold grip by the light of nature, vainly think to reduce thus control crank.Therefore, closing of the separation of clutch and tail-off is very difficult to accomplish in practice, therefore still constantly has an accident up to today.Although paying the utmost attention under the prerequisite of accident; existing a kind of outstanding invention occurs; wherein survey the gradient of power tiller with sensor; thereby make to stall; but power tiller produces vibration through regular meeting; and the working region surface imperfection, and some work area is inclined and uneven.Owing to will organize work, it must be noted that sensor is probably malfunctioning when really needing in this class place.
In addition, as for the sort of center of gravity be positioned at position after extremely leaning on slow down owing to power tiller by advance the backward power tiller of the danger that the reaction force that produces causes of power, not dangerous when the normal regression of power tiller.But dangerous situation may betide between the rice field and to exist when in one ridge or the regression way other barrier being arranged.In addition, because center of gravity is in the position after extremely leaning on usually, when returning, implements driving and operate and raise control crank, its shortcoming is that the operator may be very tired after the darg end.Therefore, in agriculture field, need obtain a kind of power tiller that when regression, has tight security as early as possible.
Therefore, the purpose of this invention is to provide a kind of power tiller that when regression, has tight security, thereby overcome the above-mentioned defective in the traditional handicraft.
For this purpose, according to a first aspect of the invention, provide a kind of regression device of power tiller, comprising: the control crank that its lifting/lowering angle can be regulated in a series of positions; With a brake, this brake just unclamps when only reducing at the lifting/lowering angle of control crank and allows that regression takes place.Control crank must be placed a lower position to act on the regression (oppositely walking) of power tiller in this device that is provided, improve operating efficiency and safety in the regression thus.
In operation, if the lifting/lowering angle of control crank is bigger, just brake come in contact with control crank, thereby prevent that gear lever from shifting to back gear.Only when the lifting angle of steering tiller reduced, brake just unclamped and makes gear lever shift to back gear.
According to a first aspect of the invention, because this power tiller regression device comprises the control crank that its lifting/lowering angle can be regulated in a series of positions and just decontrol and allow the brake of regression generation when only reducing at the lifting/lowering angle of operating grip, the present invention has multiple superiority.At first, the safety in the time of can significantly improving regression (oppositely walking).Secondly, can eliminate the worried or similar mood of operator in regression substantially, make the operator can carry out the regression operation relievedly.The 3rd, can eliminate the dangerous situation in the forward operation substantially.In addition, in normal operations,, therefore can increase operating efficiency in some positions because the lifting/lowering angle can change like a cork.
With regard to above-mentioned superiority particularly, when the power tiller regression, usually produce counter-force Q (as Figure 10) at driving wheel or around being installed in the farming part at power tiller middle part.Reaction force Q is bigger usually on the farming building site, and the power tiller front side is reduced.After this, because power tiller makes a dash power tiller forward along the counter-rotation that control crank raises.Therefore, the grip of control crank is in very high position in a flash, and because the operator continues to hold grip according to its instantaneous judgement, operator's arm is upwards held high and is forced to take the stretching attitude in back.Therefore, to the operation of the power tiller difficulty that becomes, and the operator is absorbed in the difficult condition that may be run over by the power tiller.
Can eliminate this dangerous situation in advance by the present invention.That is to say that only when control crank reduced, promptly when the inclination angle of control crank reduced, gear lever can shift into back gear.Owing to this reason, when power tiller carried out regression, control crank always was in a lower position.Even the grip of control stick can not be in very high position yet when generation reaction force Q (as mentioned above) and power tiller partly were the center rotation with driving wheel or farming when the power tiller regression, thereby can improve operator's safety.So, can eliminate substantially that the operator worries to have an accident and the worried or similar mood that produces makes the operator carry out the farming operation relievedly when the power tiller regression.In addition, can be in advance the dangerous situation in the elimination work substantially.Therefore, maximum benefit is exactly because the grip position of control crank is not high, the operator can remain on a stable low level and can not be forced to take the back to stretch straight posture, and tiller is convenient to control all the time, this just can prevent to produce in the regression situation to operator's danger, and increases operator's safety.
According to a second aspect of the invention, in the regression device of the power tiller of foundation first aspect present invention, brake has a stopping part and is placed in correct position on the gear lever, and this stopping part only just engages with certain part of control crank when big at the lifting/lowering angle of control crank.Therefore, it is very simple and easy that structure becomes, and the operation of stablizing gear lever most probably.That is to say, brake and gear lever one biconditional operation, and stopping part only just engages with certain part of control crank when big at the lifting/lowering angle of control crank.Therefore, operating conditions can easyly be stablized intuitively, thereby improves the safety of operation.
According to a third aspect of the invention we, in regression device according to the power tiller of first aspect present invention, brake has a stopping part and is fixed in a side of control crank, this stopping part only control crank or/fall the angle just to engage when big with gear lever.Therefore, do not regulate the control crank device that gear lever shifts into back gear, and make structure become very simple thus even can provide.
Then, according to a forth aspect of the invention, in regression device according to the power tiller of first aspect present invention, brake has a stopping part and is placed in the correct position of gear lever, part brake has a sloping portion, and this sloping portion tilts downwards from the stopping part bottom of brake.This sloping portion links to each other with the coupling part of brake.Therefore, in regression when control crank when lifting/lowering angle smaller part moves to lifting/lowering angle larger part just can will push away on the sloping portion owing in brake, exist sloping portion, control crank not to take a lot of strength, this makes the same moved further of gear lever, thereby makes gear lever transfer to neutral position.As a result, prevented that power tiller from advancing with being regardless of the consequences and therefore having increased operator's safety.
Then, according to a fifth aspect of the invention, in regression device according to the described power tiller of first aspect present invention, control crank partly is made of two Handle axis with certain intervals, stretch the form that forms similar herringbone to Handle axis grip one side from the near end side at interval, the opereating specification of gear lever is regulated in the interval between two Handle axis parts.Therefore, just the operation of gear lever as moving ahead and regression can realize in the interval of two Handle axis of control crank.Therefore, prevented that specifically gear lever is outwards outstanding from two Handle axis parts of control crank.So when the working power tiller, can prevent gear lever by around object or analog catch, therefore can improve safety.
Figure 1A is the plane according to the essential part of the regression device of first embodiment of the invention.
Figure 1B is a cross section of taking from N-N direction among Figure 1A.
Fig. 2 is the work sketch map according to first embodiment of the invention, and the gear lever that wherein has brake is placed on neutral position.
Fig. 3 is the work sketch map according to first embodiment of the invention.The gear lever that wherein has brake is advanced reverse gear mechanism by shift.
Fig. 4 is the plane according to the power tiller of the improved tool regression of first embodiment of the invention device.
Fig. 5 is the part cross sectional plane figure according to improved speed change parts of first embodiment of the invention and its coupling part.
Fig. 6 is the perspective view according to the improved essential part of first embodiment of the invention.
Fig. 7 is the perspective view according to the improved essential part of first embodiment of the invention.
Fig. 8 A is the improved work sketch map according to first embodiment of the invention, and its gear lever shift that has brake is gone into reverse gear.
Fig. 8 B is the plane of the part section of speed change parts part under the duty shown in the 8A.
Fig. 9 A is according to the improved work sketch map of the first embodiment of the present invention, and its gear lever shift that has brake advances neutral gear.
Fig. 9 B is the plane of the part section of the speed change parts part under the duty shown in Fig. 9 A.
Figure 10 is the plane according to the power tiller of the tool regression device of second embodiment of the invention.
Figure 11 is the perspective view according to the essential part of the second embodiment of the present invention.
Figure 12 is the perspective view according to the essential part of the regression device of the second embodiment of the present invention.
Figure 13 is a cross section of taking from P-P line arrow direction among Figure 12.
Figure 14 A is the work sketch map according to the second embodiment of the present invention.The gear lever shift that it has brake advances neutral gear.
Figure 14 B is the work sketch map according to second embodiment of the invention.The gear lever shift that it has brake advances reverse gear.
Figure 15 is the perspective view according to the improved angular adjustment base of the second embodiment of the present invention.
Figure 16 A is the perspective view of the gear lever that has brake that provides according to the second embodiment of the present invention.
Figure 16 B is the perspective view of the essential part of the speed change thick stick that has brake that provides according to the second embodiment of the present invention.
Figure 17 A is the plane according to the improved essential part of the second embodiment of the present invention
Figure 17 B is the cross section of the handle proximity structure shown in Figure 17 A.
Figure 18 is the end view of Figure 17 A.
Figure 19 is the plane according to the essential part of the regression device of the third embodiment of the present invention.
Figure 20 is the end view of the power tiller that provides of the regression device according to the third embodiment of the present invention.
Figure 21 A is according to the improved work sketch map of the third embodiment of the present invention.As shown: gear lever can not enter reverse gear by shift under this state.
Figure 21 B is according to the improved work sheet of the third embodiment of the present invention.As shown: gear lever can not advance reverse gear by shift under this state, but shift enters drive shift.
Figure 21 C is according to the improved work sketch map of the third embodiment of the present invention.As shown, the gear lever shift advances reverse gear under this state.
Figure 22 A is the perspective view according to other improved essential part of the third embodiment of the present invention.
Figure 22 B is a work sketch map, and as shown: change-speed gearing can not shift advances the reverse gear among Figure 22 A under this state.
Figure 22 C is a work sketch map, and as shown: the gear lever shift enters reverse gear under this state.
Figure 23 A is the perspective view according to the essential part of the fourth embodiment of the present invention.
Figure 23 B is a work sheet.As shown: change-speed gearing can not shift advances the reverse gear among Figure 23 A under this state.
Figure 23 C is a work sheet.As shown: the change-speed gearing shift advances reverse gear under this state.
Figure 24 A is the plane according to the essential part of the fifth embodiment of the present invention.
Figure 24 B is the perspective view of the essential part of trapeze part.And
Figure 25 is the end view according to the duty shown in the traditional handicraft.
To be described embodiments of the invention with reference to accompanying drawing.At first, provide and relate to the description of Figure 1A to the first embodiment of the present invention (comprising improvement) of 9B, the structure of the major part of this tiller is consistent to the structure shown in the 16B with Figure 10, and the latter has described the power tiller according to the second embodiment of the present invention.So at first describe common ground.Engine 1 is placed on the framework 2.Framework is made to such an extent that ratio engine 1 is long, and engine 1 and other parts can be placed thereon like this.Framework 2 is upwards outstanding forward forwards.The power of engine 1 resembles pulley, belt, drive chain case etc. by a transmission device and links at the driving shaft 4 that is lower than framework 2 positions with device.With regard to minitype motivation is ploughed the body machine, for the purpose of farming can removable turning up the soil be installed one group of farming part 5 on driving shaft 4.They each many farming cutter 5a are arranged.Can on driving shaft 4, removable turning up the soil be installed by one group of driving wheel 6 in order to travel at road surface.Further with regard to big-and-middle-sized power tiller (rotary-type power tiller shown in Figure 20), farming part 5 and driving wheel 6 are separately and independently to install, and farming part 5 is installed in the rear portion of driving wheel 6.
Control crank A is to protuberance or be installed in outer frame part 7 back upper places that engine on the framework 2 is mounted the position and tilt.Control crank A so installs: make its lifting/lowering angle adjustable in plurality of sections, and can the lifting/lowering angle be fixed on the position of wanting according to operator's height and condition of work (as Figure 10 or similar).Therefore control crank can fix on only position.
Control crank A comprises a pair of Handle axis 8 (as Figure 11,12), and the neighbouring part of this two handle portion 8 is made a very narrow interval (shown in plane) therebetween, and mutual almost parallel.Interval between the two Handle axis parts 8 is to their end expansion (grip 8a) formation herringbone roughly.This two Handle axis is partly fastening by connecting rod 8b.It is that being of pivotal support is necessary that control crank A is positioned to that can swing and neighbouring part handle portion 8.Control crank A is arranged to and can swings at the front end of angular adjustment base B especially.On the outer frame part that this base is placed on the protuberance or framework 2 provides.So settle so that in vertical plane, swing by pin 10.
On the outer frame part that par 11 is fastened on the protuberance or framework 2 provides of angular adjustment base B.And the near-end of Handle axis is made pivotal support with the pin 11 on the bearing portions on 11 1 ends of par.The other end of angular adjustment base B provides a pair of arc angular adjustment platform 12.Some hole H (this example is four holes, i.e. H1, H2, H3, H4) vertically are set on each angular adjustment platform 12 especially.These holes are in the both sides lateral symmetry.The number in hole not necessarily is limited as 4, and passable is more or few.
The pipe that loosely inserts steel cable 16 is anchored on connecting rod 8b.Therefore, when adjusting rod 17 is booked, rope is overcome two alignment pins 13 of elasticity pulling of turn successively through U type frame 15 by pulling.Therefore, separate the hole H of the end of alignment pin 13 from angular adjustment platform 12.If the angle that the inclination angle of control crank A is configured to want, and if adjusting rod 17 released under the sort of state, the end of two alignment pins 13 since the elasticity of turn 14 engage with hole on the angular adjustment platform.
At the grip 8a of Handle axis part 8 a clutch lever 8e is housed.If this arrangement makes clutch lever 8e be held with a firm grip (pushing away among Figure 10 being), just driving wheel 6 or farming part 5 are driven.Clutch lever 8e is formed forward or is contained on the connecting rod 8b by grip 8a.The angles shifts that makes control crank A is to angle suitable for operator's condition of work, and the state that operating grip A is fixed in angular adjustment base B is loosened and is in free state.After this, control crank A is placed in and is fixed on the angle of wanting with reference to the horizontal datum of main body or housing part 7.
A gear lever 20 is housed on the appropriate location of framework 2 or similarity piece.Gear lever 20 moves forward and backward power tiller and variable-ratio and do similar action.By the proper handling to gear lever 20, the operator can make power tiller advance or retreat or it is on the speed required in the various speed.At first, in the first embodiment of the present invention (as Figure 1A) gear lever 20 between two Handle axis parts 8.Gear lever 20 is determined platform 26 for the groove slidingtype being arranged and having a shift position.
Shift position determines that platform 26 both can be contained in the outside (seeing Figure 1A) of Handle axis part 8, also can be contained in its inboard (this kind installed not shown).Shift position determines that the position of platform 26 is not limited thereto simultaneously.Gear lever 20 has a brake C.Except that the low level of control crank A, brake C can contact with the inboard of Handle axis part 8 in a certain scope, thereby prevents that back gear R from engaging.
After this provide describing of brake C, briefly, stopping part 21 can with the Handle axis 8 of control crank A particularly bearing portions 8C contact.Provide this device to make gear lever 20 not go on foot approaching with handle portion nearly.Just this structure makes the stopping part 21 of brake C contact (as shown in Figure 2) with the Handle axis part 8 of control crank A when the gradient (angle of inclination) of Handle axis part 8 when hole H3, the H4 on big and alignment pin 13 and the angular adjustment platform 12 or H2 joint, to prevent gear lever 20 engaged reverse gear R.And, have only when the position of control crank A to be set at minimum position, and the stopping part compacting control crank A of alignment pin 13 brake C when engaging with hole H1, make to shift into reverse gear R (shown in Figure 1B, 3)
Figure 4 shows that the improvement of the first embodiment of the present invention, the regression device is not installed speed change locating platform 26, but it is this type: from the cover 30 protruding speed change push rods 24 of the speed change parts G that is attached to chain box bar 3 by gear lever 20 operations.Angular adjustment base B is installed on the cover 30 of speed change parts G.The current hole of bigger manipulation forms (see figure 7) at the terrace part 11 of angular adjustment base B.Speed change push rod 24 passes handles current hole 11b, and the near-end 20a of gear lever binding is fastened on the speed change push rod 24.
By handle gear lever 20 can realize comprising advance, retreat, the operation of neutral gear (carrying out at suitable direction rotation clutch through near-end 20a by speed change push rod 24) as Fig. 4 to 6 by speed change parts G.Gear lever 20 is installed between the two Handle axis parts 8 of the control crank A that approximate lambdoid Handle axis part 8 is installed as mentioned above with share.More clearly, the near-end 20a of gear lever 20 moves (as Fig. 6,7) between the two angular adjustment platforms 12 of angular adjustment base B.
Speed change push rod 24 is installed on the cover 30 of speed change parts G.Protruding with aforementioned manner.As Fig. 5, speed change parts G comprises the power shaft 31 of the belt wheel 33 that has the power that receives engine 1 and receives the output shaft 32 of the revolving force of power shaft 31.Required one clutch 36 that side gearing 34, a regression side gearing 34, can the two conversion at this that moves ahead is housed between power shaft 31 and output shaft 32.In this embodiment, gear mechanism is as the final drive gear 34 that moves ahead, so travelling gear 34a is installed on the power shaft 31 with stationary state, and travelling gear 34b is installed on the output shaft 32 with free rotary state simultaneously.Similarly, a chain type transmission mechanism is as regression side gearing 35, so drive sprocket 35a is contained on the power shaft 31 with stationary state, and drive sprocket 35b is installed on the output shaft 32 with free rotary state simultaneously.Chain 35c transmission between sprocket wheel 35a, 35b.
In addition, output shaft 32 is separated at the joint of transmission mechanism 34b and 35b.Two parts of output shaft 32 pass through clutch 36 combinations or separate.Especially, output shaft 32 is split up into advance side shaft portion 32a and retreats side shaft part 32b.Spline 32c is installed in them on each.In this example, spline 32c is installed in and retreats on the side shaft part 32b.The clutch 36a of clutch 36 can slide on spline 32c.Slide is realized by the movement parts 36b that produces motion by speed change fastener 36c.Speed change fastener 36c and speed change pull bar 24 be connected (as Fig. 6,7).
When the operator handles gear lever 20, speed change push rod 24 moves speed change fastener 36c by gear lever 20 and rotates, and engages or cut-off clutch 36a through movement parts 36b successively.Especially, if gear lever 20 is arranged on the position of reverse gear R, clutch 36a separates and separates output shaft 32 and is side shaft part 32a and the regression side shaft part 32b of moving ahead, (Fig. 8 B).35 operations of regression final drive gear make 37 regressions of motion sprocket wheel rotate thus.On the other hand, if gear lever 20 is arranged on drive shift F, clutch 36a connects the advance side shaft portion 32a of output shaft 32 and retreats side shaft part 32b, and then the operation of advance side transmission mechanism makes motion sprocket wheel 37 rotation of advancing.
Like this, as mentioned above, the gradient (angle of inclination) of Handle axis part 8 be under the big situation and alignment pin 13 and angular adjustment platform 12 on hole H4, H3 or H2 when engaging, the stopping part 21 of brake C partly contacts (as Fig. 9 A) with the Handle axis of control crank A, has prevented that gear lever 20 from engaging with reverse gear R.Also be present embodiment: the stopping part 21 of brake C is made especially and can be contacted with the bearing portions 8C of gear lever 20.At this moment, gear lever 20 can move upward to neutral position N, and can not move to the position of reverse gear R, as Fig. 9 B.
Like this, have only when the position of control crank A to be set to minimum point and alignment pin 13 when engaging with hole H1, the stopping part 21 compacting control crank A (as Fig. 8 A) of brake C make shift advance reverse gear R.In Fig. 5,8B, 9B, motion sprocket wheel 37 is installed on the output shaft 32, and motion sprocket wheel 37 drives driving shaft 4 by the transmission mechanism that comprises drive chain case 3 or similarity piece.
In addition, in the second embodiment of the present invention, shown in Figure 14 A and 14B, for operation gear lever 20 advances, regression and transferring the files to neutral gear, the change of speed can lean on the rotation of gear lever 20 to realize.Especially, shown in Figure 14 A and 14B, be contained in ridge 25 on the speed change push rod 24 at vertical position if this kind device makes, then gear is positioned at neutral gear N, if ridge 25 turns clockwise about 10 degree, then transfers the files to drive shift F; And if ridge 25 from neutral position be rotated counterclockwise 10 the degree about, then transfer the files to reverse gear R.If describe the speed change situation by gear lever 20, then the direction of rotation of gear lever 20 is opposite with speed change push rod 24.In Figure 14 A and 14B, if gear lever 20 levels, gear is in neutral gear N; If gear lever 20 (counterclockwise approximately about rotation 10 degree) is adjusted in the below left in the drawings, then transfer the files to drive shift F; If adjust gear lever 20 (turning clockwise about about 10 degree) to the upper left side among the figure, then transfer the files to reverse gear R.
Below, illustrate brake C, to reverse gear R position (shown in Figure 15 and similar figure) at this moment transfers the files the side (clockwise rotating among Figure 14 A and the 14B) of gear lever 20 handling maneuver handle A.Brake C comprises a stopping part 21, is used for contacting with coupling part 22 with Handle axis part 8 nearly sides, and coupling part 22 is continuous with Handle axis part 8, and is positioned at the contiguous place of the L-shaped sweep of gear lever 20 1, as shown in plane.Particularly brake C is constituted (seeing Figure 11,12,16A) or is constituted (seeing Figure 16 B) by the parts of a similar pull bar by the parts of a similar platform.Stopping part 21 and coupling part 22 form an integral body, and are respectively this whole distal end portion (upper end) and near end (lower end).
When the stopping part 21 of brake C contacted with the Handle axis part 8 of control crank A, gear lever 20 can't be moved further (seeing Figure 14 A) to Handle axis part 8 again.More particularly, if this structure makes that the gradient (inclination angle) of Handle axis part 8 is bigger, and alignment pin 13 is in the hole H4 on the angular adjustment platform 12, among H3 or the H2, the stopping part 21 of brake C just contacts with the Handle axis part 8 of control crank A, stops the gear lever 20 among Figure 14 A further to clockwise rotate.Therefore, gear lever 20 can not be transferred the files to reverse gear R position.
Even but alignment pin 13 is arranged in hole H4, H3 or H2 on the angular adjustment platform 12 in Figure 14 A, gear lever 20 still can rotate counterclockwise, and the stopping part of brake C contacts with the Handle axis part 8 of control crank A simultaneously.Therefore, can at an easy rate gear lever 20 be transferred the files to the position of drive shift F.
The lifting/lowering angle of control crank A is meant other state except the lifting/lowering angle is less more greatly.In particular, be meant when alignment pin is among hole H4, H3, the H2 of angular adjustment platform 12.Make the adjustable reason in lifting/lowering angle be to allow the operator according to its height or conditions of similarity, the optimal height position from control crank A when power tiller advances is handled.Simultaneously, the lifting/lowering angle of control crank A specifically specific bit pin 13 be in situation among the minimum hole H1 of angular adjustment platform 12.
At this moment, in Figure 14 B, gear lever 20 can turn clockwise from neutral position, makes gear lever 20 can not have the position of transferring the files to reverse gear R difficultly.Even the angle of control crank A makes because the reaction force that causes in the power tiller regression makes power tiller turn forward in this example, the operator still can operate control crank A in the safety that has increased.Particularly, in Figure 10, the gradient of control crank A (inclination angle) is less, and control crank A is in extreme lower position, and promptly the grip 8a of control crank A is in extreme lower position.This lower position only marks one among the embodiment, but the present invention is not limited to this, and some such positions can be provided, and forms a feasible region of determining according to various conditions such as operator's height etc.
In addition, if the coupling part 22 of stopping part 21 and brake C is by a sloping portion 23 link to each other (shown in Figure 11,14A, 16A), if control crank is raised owing to Handle axis part 8a is elevated when regression, just sloping portion 23 can make brake C smoothly rotate counterclockwise to state shown in Figure 14 A from state shown in Figure 14 B.Therefore, can transfer the files to neutral gear N position (showing) as Figure 14 A.
Below, will an improvement of second embodiment of the invention be described.In this improvement, shown in Figure 17 A to 18, variation has taken place in the structure of control crank A, and another former type member of forming the member and second embodiment is equal to.Control crank A comprises handle 9c roughly V-shaped when the nearly body framework of a rod-type 9a who roughly is the U type, clavate framework 9b and look squarely.That is to say, the angle modulation mechanical device of control crank A be rod-type nearly body framework 9a and with second embodiment in same way as install.Frame section 9b is fixed in the posterior of the nearly body framework of rod-type 9a and the rear end that handle portion 9c is placed in frame section 9b.In addition, be installed in that angular adjustment platform 12 on the angular adjustment base B is that single file is installed and around the nearly body framework of rod-type 9a.In this improvement of second embodiment, with the composition member of member equivalence among second embodiment with identical numeral, and their operation is identical, therefore will be omitted its description.
Below, the third embodiment of the present invention has been set forth such a case, wherein, shown in Figure 19 and 20, use control crank A (seeing Figure 12) or the control crank A (seeing Figure 17 A and 17B) in the second embodiment modified among second embodiment that gear lever 20 is moved in a horizontal plane (comprising a sloping portion).Particularly as seen in the plane, when gear lever 20 when control crank A leaves, transfer the files to drive shift F; When gear lever 20 during, transfer the files to reverse gear R to control crank one side shifting; And a certain moderate position is decided to be neutral gear N (seeing Figure 19) therebetween.Equally in this example, gear lever 20 has brake C, if its mounting structure makes alignment pin 13 be among hole H2, H3 or the H4 so that allow the gradient (inclination angle) of control crank A become big, the stopping part 21 of brake C just can contact with control crank A, prevents that gear lever from moving to reverse gear R position.Thereafter, only when alignment pin 13 was among the H1 of hole, the stopping part 21 of brake C just can be suppressed control crank A, allows to transfer the files to reverse gear R.Other composition member and the second embodiment member are similar, therefore omit the description to it.Reverse gear R, the position of neutral gear N and drive shift F is on same plane, so that ground, isoplanar changes speed.In this example, gear lever 20 has been generally the groove slidingtype and has had shift position determines platform 26, and gear lever 20 nearly body portions can be slided in shift position is determined conduit in the platform 26.In addition, in Figure 20, the relatively ridge 18 of short fixedly side of a length is housed on the nearly side of control crank A, and control crank A is placed in this fixedly rear end of side ridge 18 by angular adjustment base B.
The modified of the 3rd embodiment is (shown in Figure 21 A to 21C): drive shift F is made up of the first drive shift F1, the second drive shift F2 and the 3rd drive shift F3.When the gradient of control crank A (inclined plane) becomes big if this structure makes alignment pin 13 be among hole H2, H3, the H4, even the stopping part 21 of brake C contacts with control crank A, still can transfer the files to the first drive shift F1, the second drive shift F2 and the 3rd drive shift F3, but can not transfer the files to reverse gear R.In this modified of the 3rd embodiment, sloping portion 23 is between coupling part 22 and the stopping part 23 simultaneously.If thereby control crank is significantly raised when gear lever 20 is on reverse gear R, gear lever 20 can be got back to neutral gear N.Therefore, this is to have adopted to be called as the mechanical device that returns automatically.
In addition, Figure 22 A to 22C has shown another improvement project of the 3rd embodiment, and a mid portion that is sector is wherein arranged between coupling part 22 and stopping part 23, can not be elevated when making control stick A on being in reverse gear R state.Promptly adopt so-called non-automaticization return mechanism.In this example, transferring the files to reverse gear R, gear lever 20 is retracted neutral gear N position, thereby control crank A is raised.Other device is similar with the device among above-mentioned the 3rd embodiment, therefore omits the description to it.
The situation of fourth embodiment of the invention is that shown in Figure 23 A to 23C, brake C is installed on the nearly body portion 9a of handle of Handle axis part 8 or control crank A.In other words, the upper end of the coupling part 22 of brake C is fixed on the nearly body portion 9a of handle of Handle axis part 8 or control crank A.The lower end of coupling part 22 becomes sector, and stopping part 21 from the coupling part 22 lower ends downward extend.This structure makes to have only when alignment pin 13 and is among hole H2, H3 or the H4 so that the gradient of control crank A (inclination angle) when becoming big (seeing Figure 23 B) that gear lever 20 contacts with retainer 21, prevents that gear lever from transferring the files to reverse gear R position.Owing to this reason, if alignment pin 13 is among the H1 of hole so that the gradient of control crank A (inclination angle) (is seen Figure 23 C) when diminishing, 21 contacts of gear lever 20 discord stopping parts are so just can transfer the files to reverse gear R position.All the other building blocks are similar to the parts of second embodiment, therefore omit the description to it.In this example simultaneously, if sloping portion 23 is housed, just can obtain so-called automatic resetting mechanism and all the other modes of operation are similar to the operation of second embodiment.
In the 5th embodiment (as Figure 24 A and 24B), the holder that is ring gear shape is housed at a fixing end of side ridge part 18.Feasible each angle that can adjust to circumferential pitch between this gear adjacent teeth to the inclination (inclination angle) of control crank A with a fastening screw swing arm of this device.In this example, gear lever 20 and brake C are installed, it is moved to act on the change of speed, shown in Figure 22 A and 23B in a horizontal plane.But, the present invention is not limited to this, and for example, the variation that can provide such device to make speed can realize by rotation, shown in Figure 14 A and 14B.In the 5th embodiment, because the lifting/lowering angle of control crank A can circumferentially be regulated in each angle of pitch between the gear adjacent teeth, circumferentially pitch is more little, can obtain good adjusting more.Control crank A can be adjusted in some positions.
Claims (5)
1. the regression device of a power tiller comprises:
A control crank, its lifting/lowering angle can be regulated in a series of positions; And
A foregoing brake that is used for regression just unclamps when it only reduces at the lifting/lowering angle of above-mentioned control crank.
2. the regression device of power tiller as claimed in claim 1, wherein above-mentioned brake has a stopping part and is placed in the appropriate location of a gear lever, and this stopping part only just engages with certain part of above-mentioned control crank when big at the lifting/lowering angle of above-mentioned control crank.
3. the regression device of a power tiller as claimed in claim 1, wherein above-mentioned brake has a stopping part and is fixed in a side of a control crank, and above-mentioned stopping part only just engages with above-mentioned gear lever when big at the lifting/lowering angle of above-mentioned control crank.
4. the regression device of a power tiller as claimed in claim 1, wherein above-mentioned brake has a stopping part, and be placed in the appropriate location of a gear lever, above-mentioned part brake has a sloping portion, and this sloping portion tilts to oblique below than lower area from one of the above-mentioned stopping part of above-mentioned brake.This sloping portion divides with a junction of above-mentioned brake and links to each other.
5. the regression device of a kind of power tiller as claimed in claim 1, two Handle axis with certain intervals partly constitute in the wherein above-mentioned control crank, grip part one side expansion from above-mentioned two Handle axis part of near end side direction forms herringbone at interval, and the opereating specification of above-mentioned gear lever is regulated in the interval of above-mentioned two Handle axis part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12459795A JPH08295148A (en) | 1995-04-26 | 1995-04-26 | Back running device in cultivator |
| JP124597/95 | 1995-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1141715A true CN1141715A (en) | 1997-02-05 |
Family
ID=14889396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96108922 Pending CN1141715A (en) | 1995-04-26 | 1996-04-26 | Backing device of power tilling machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH08295148A (en) |
| CN (1) | CN1141715A (en) |
| DE (1) | DE19616816A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103931288A (en) * | 2014-04-19 | 2014-07-23 | 曾宪泽 | Novel gear engaging interlocking mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108432367A (en) * | 2018-04-03 | 2018-08-24 | 莱州奥伦农业机械有限公司 | Caterpillar band self-propelled rotary cultivator |
-
1995
- 1995-04-26 JP JP12459795A patent/JPH08295148A/en active Pending
-
1996
- 1996-04-26 DE DE1996116816 patent/DE19616816A1/en not_active Withdrawn
- 1996-04-26 CN CN 96108922 patent/CN1141715A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103931288A (en) * | 2014-04-19 | 2014-07-23 | 曾宪泽 | Novel gear engaging interlocking mechanism |
| CN103931288B (en) * | 2014-04-19 | 2015-10-21 | 曾宪泽 | A kind of engage a gear interlocking gear |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19616816A1 (en) | 1996-10-31 |
| JPH08295148A (en) | 1996-11-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |