CN206909079U - Mini-tiller lever gearshift - Google Patents

Abstract

The present utility model application belongs to technical field of agricultural machinery, specifically disclose a kind of mini-tiller lever gearshift, including gearshift support frame, upper gear level, lower gear level, nestling plate, reverse gear line and the handle that reverses gear, and the gearshift support frame includes gearshift support bar, gearshift outer cover, gearshift line bracket, spacing compression spring seat；The top of nestling plate is rotatablely connected with gearshift support bar rotation connection, the bottom of nestling plate with lower gear level, and the middle part of nestling plate is fixedly connected with upper gear level；On nestling plate a breach is provided with above upper gear level；The handle that reverses gear is rotatablely connected with upper gear level, and journal stirrup is provided with positioned at the position reversed gear between handle and nestling plate on upper gear level；The line that reverses gear includes spool and the bracing wire through spool, and spool two ends are provided with pipe sleeve, and a pipe sleeve is fixed with journal stirrup, and another pipe sleeve is connected with gearshift line bracket.Compared with prior art, mechanism rapid operation, conveniently, it effectively prevent situation about being trip stopped by misoperation and occur.

Description

Mini-tiller lever gearshift

Technical field

The invention belongs to technical field of agricultural machinery, specifically discloses a kind of mini-tiller lever gearshift.

Background technology

Hand push pull bar needs

For mini-tiller using small diesel engine or gasoline engine as power, rotary tillage, ploughing, sowing, de- can be completed by being equipped with corresponding farm implements Grain, the multi-mode operation such as draw water, spray, generate electricity and transport.Mini-tiller has the features such as in light weight, small volume, simple in construction, extensively Suitable for areas such as Plain, mountain area, hills.Mini-tiller can also draw towed vehicle and carry out short-distance transport, can be in field free walker Sail, user-friendly and storage, eliminate the worry that large-scale farm machinery cannot be introduced into mountain area field, be vast farmerses consumption Person substitutes the cultivated optimal instrument of ox.

The shifting-position mechanism for changing its moving situation is equipped with mini-tiller, existing shifting-position mechanism is the gearshift in mini-tiller One pull bar is installed, pull bar is slidably connected on the arm-rest frame of mini-tiller, by front and rear push-and-pull pull bar, makes gearshift arm swing on arm Realize gearshift.Problems be present in this gearshift：Arm swing of being shifted gears when the 1st, shifting gears is needed more energetically, it is necessary to which pull bar is applied Push-and-pull before and after equal power is carried out, and gear arm is generally connected with the power shift gear case in mini-tiller, it is larger that it rotates needs Power acts on so that this gearshift is very laborious when operating；2nd, changed because above-mentioned gearshift needs to apply larger power Gear, operator's more difficult control when applying compared with great dynamicses, is easily caused and trip stops, if operator has little time, interim strain controlling is micro- to be ploughed Machine, it is prone to accidents；3rd, when push-and-pull is shifted gears before and after pull bar, the hand of operator will be with pull bar and move forward and backward, if behaviour Author station is possible to can't reach pull bar in the hand away from pull bar remote position, operator in pushing drawing rod；If operator station exists When with a distance from nearer from pull bar, if the hand operated dynamics when pulling pull bar controls the improper body that pull bar can be made to bump against operator Body, damaged to operator；4th, above-mentioned gearshift usually not gear is identified, or gear is marked on into mini-tiller Side, it is not easy to operator and checks gear；If the 5, control is improper in shift process easily changes to the gear that reverses gear, mini-tiller was using Cheng Zhong, if hop jump suddenly, to reversing gear, operator has little time to react very much, it will causes very serious consequence.

The content of the invention

The purpose of the present invention is providing a kind of mini-tiller lever gearshift, is operated with solving existing gearshift The problem of reversing gear easily is jumped to cause high effort for, during gearshift.

In order to achieve the above object, base case of the invention is：Mini-tiller lever gearshift, including gearshift support Frame, upper gear level, lower gear level, nestling plate, reverse gear line and the handle that reverses gear；The gearshift support frame includes being fixed on arm-rest frame Gearshift support bar, lower end be nested with gearshift support bar gearshift outer cover, with gearshift support bar rotation connection gearshift line bracket, Spacing compression spring seat；The top of the nestling plate and gearshift support bar rotation connection, the bottom of nestling plate rotates with lower gear level to be connected Connect, the middle part of nestling plate is fixedly connected with upper gear level；On nestling plate a breach, spacing pressure are provided with above upper gear level Spring abutment is arranged on gearshift outer cover, and the position of spacing compression spring seat is corresponding with breach；The reverse gear middle part of handle and upper gear level rotates Connect, journal stirrup is provided with positioned at the position reversed gear between handle and nestling plate on upper gear level；The line that reverses gear includes spool and through line The bracing wire of pipe, spool two ends are provided with pipe sleeve, and a pipe sleeve is fixed with journal stirrup, and another pipe sleeve is connected with gearshift line bracket；Draw One end of line is provided with gearshift stage clip and locking nut, bracing wire two ends are provided with pull head, and spacing compression spring is located at pull head and locking nut Between；Locking nut is fixedly connected with spacing compression spring seat, and the pull head close to locking nut is located at below breach, away from locking nut The free end of pull head and the handle that reverses gear fix.

The operation principle of this base case is：During gearshift, if need not reverse gear, gear level can be held to upper gearshift Bar apply vertical direction on active force, i.e., on lift or push gear level；In the fixing end and nestling plate of upper gear level Portion is fixed, the free end stress of upper gear level, and power will be transferred to nestling plate by upper gear level so that the middle part of nestling plate by To upper and lower active force.The upper end of nestling plate is fixed on arm-rest frame with gearshift support bar rotation connection, gearshift support bar, nestling The middle part stress of plate can be such that the top of nestling plate is rotated along gearshift support bar, so as to drive the lower end swing of nestling plate.It is young The lower end of bird plate is rotatablely connected with lower gear level, and the lower end of nestling plate, which is swung, will pull lower gear level to move forward and backward, so as to draw Move blocking arm swing and realize gearshift.Due to being located at close to the pull head of locking nut below breach, pull head is changed nestling plate edge Gear support bar, which rotates, to be limited so that nestling plate is only capable of rotating within the specific limits, so that now mechanism can not Realization is reversed gear.

During gearshift, if needing to reverse gear, gear level and the handle that reverses gear can be held, and vertical direction is applied to upper gear level On active force, i.e., hold reverse gear handle when on lift or push on gear level；Upper gear level, which rotates, can be achieved gearshift, due to The free end of pull head and the handle that reverses gear away from locking nut is fixed, and bracing wire when reversing gear handle of holding with a firm grip is pulled, close to locking screw Female pull head is drawn out under breach, the activity of nestling plate is no longer blocked, so as to realize that mechanism can complete operation of reversing gear；Relieving is fallen After keeping off handle, pull head stretches the indentation, there of meeting nestling plate automatically in the presence of limit spring.

Above-mentioned upper gear level and the fixing end that one end that nestling plate is fixed is upper gear level, the other end are then upper gear level Free end；Reverse gear that handle and upper gear level are fixed one section is the fixing end of handle of reversing gear, the other end then for the handle that reverses gear from By holding.

The beneficial effect of this base case is：1st, force mechanism of the mechanism by gear shift operation from original front and rear push-and-pull It is converted into carrying off the force mechanism of pressure, so that operator's hand when operating gearshift without moving forward and backward with pull bar, prevents from grasping When author operates gearshift beyond reach or pull bar can bump against the situation of operator's body.2nd, mechanism above gear level, nestling Plate form lever, using the top of nestling plate with gearshift support bar rotation connection at as fulcrum, due to upper gear level free end extremely The distance of fulcrum is far longer than fulcrum to the distance of nestling plate lower end so that the lever of mechanism composition is laborsaving lever；Only need To apply less active force in the free end of upper gear level, you can make the bottom of nestling plate there are larger oscillatory forces, so as to Lower gear level is set to be realized gearshift by larger pulling force.3rd, apply less power in mechanism and gearshift, less power can be achieved Operator is easily controlled, and so as to greatly reduce the situation for gear shift occur, reduces accident rate.4th, make in mechanism The gear that will be reversed gear during is limited, and is effectively prevented because misoperation changes to the gear that reverses gear, accident occurs.5th, the machine The control for the gear that reverses gear is realized in structure using gearshift line, you can prevent from skipping to the gear that reverses gear during gearshift, when also allowing for needing to reverse gear Shift to the operation for the gear that reverses gear.Compared with prior art, mechanism rapid operation, conveniently, effectively prevent because operating not When situation about trip stopping occurs.

Preferred scheme one：Based on scheme it is preferred, institute it is described gearshift an outer cover be fan-shaped frame, the spacing compression spring seat In fan-shaped inframe.Fan-shaped mount structure is attractive in appearance, saves material, also allows for setting spacing compression spring.

Preferred scheme two：Preferably one it is preferred, the curved end of the fan-shaped frame is provided with sign, the young bird The pointer shape that bird plate upper end indicates for sensing.When being shifted gears using mechanism, the upper end of nestling plate will be with the top of nestling plate Rotate and swing, the upper end of nestling plate is in the pointer shape for pointing to sign；Therefore when nestling plate is swung, the upper end of nestling plate will refer to Different sign on to gearshift outer cover；Because sign is arranged on the upper surface of gearshift outer cover, operator is overlooked i.e. it can be seen that sign.

Preferred scheme three：Preferably one it is preferred, the handle that reverses gear is provided with the branch that is fixedly connected with pull head Block.It is fixedly connected by bearing piece with pull head so that pull head is easily installed.

Preferred scheme four：Preferably three it is preferred, it is described reverse gear handle be provided with upper gear level coordinate it is recessed Groove.Groove can preferably coordinate with upper gear level, make operator more comfortable and laborsaving when being reversed gear using mechanism.

Preferred scheme five：Preferably four preferred, in addition to bolt, is transversely provided with the middle part of the nestling plate One axis hole and the second axis hole, the end of the upper gear level are provided with the first through hole relative with the first axis hole and the second axis hole and the Two through holes；First axis hole and first through hole are bolted to connection, and the second axis hole and the second through hole are bolted to connection. Upper gear level can be fixed on nestling plate by bolt through the first axis hole and the first axis hole, the second axis hole and the second through hole Middle part, make the middle part of nestling plate and being fixedly connected for upper gear level detachable, be easy to the manufacturing of nestling plate and upper gear level And assembling.

Preferred scheme six：Preferably one it is preferred, the top of second axis hole is provided with Triaxial hole, the second axle The lower section in hole is provided with the 4th axis hole.Mechanism is used when on different mini-tiller types, above and below the stress of upper gear level free end Mobile radian is different.When lift can interfere with arm-rest frame upwards when in use for the free end of upper gear level, can be changed by The fixing end of pin is fixed the first axis hole with first through hole by bolt, Triaxial hole is fixed with the second through hole, makes gearshift The free end of bar moves up, and prevents gear level contacts with arm-rest frame when in use from interfering, and influences the use of mechanism.When upper When the free end of gear level is pressed downward to interfere with ground when in use, the fixing end of upper gear level can be passed through bolt and incited somebody to action First axis hole is fixed with first through hole, the 4th axis hole is fixed with the second through hole, moves down the free end of gear level, prevents from changing Pin contacts with ground interfere when in use, influences the use of mechanism.When the position of the upper gear level of adjustment, rotatably Gearshift outer cover, the position of spacing compression spring seat is adjusted, so as to adjust the position of indentation, there pull head.

Brief description of the drawings

Fig. 1 is the structural representation of mini-tiller lever gearshift embodiment of the present invention；

Fig. 2 is the front view of mini-tiller lever gearshift of the present invention；

Fig. 3 is gearshift support frame front view；

Fig. 4 gearshift support frame top views；

Fig. 5 gearshift cable architecture schematic diagrames；

The structural representation of Fig. 6 nestling plates；

The structural representation of Fig. 7 gearshift outer covers；

Gear level structural representation on Fig. 8；

Fig. 9 reverses gear grip structure schematic diagram；

Figure 10 gearshift line bracket schematic diagrames.

Embodiment

Below by embodiment, the present invention is further detailed explanation：

Reference in Figure of description includes：Gearshift support bar 10, nestling plate 20, the first axis hole 21, the second axis hole 22nd, Triaxial hole 23, the 4th axis hole 24, the 5th axis hole 25, the 6th axis hole 26, gearshift outer cover 30, upper gear level 40, first through hole 41st, the second through hole 42, journal stirrup 43, lower gear level 50, the line 60 that reverses gear, bracing wire 61, pull head 611, spool 62, pipe sleeve 621, spacing pressure Spring 63, locking nut 64, the handle 70 that reverses gear, bearing piece 71, gearshift line bracket 80, spacing compression spring seat 90.

As shown in Figure 1 and Figure 2, mini-tiller lever gearshift, including gearshift support frame, nestling plate 20, upper gear level 40th, lower gear level 50, fixed cover of shifting gears, reverse gear line 60 and the handle 70 that reverses gear.As shown in Figure 3, Figure 4, support frame of shifting gears includes changing Keep off support bar 10, gearshift outer cover 30, gearshift line bracket 80 and spacing compression spring seat 90；Gearshift support bar 10 is fixed on helping for mini-tiller In hand cradle, gearshift outer cover 30 lower end is connected on gearshift support bar 10, as shown in fig. 7, gearshift outer cover 30 for fan-shaped frame, it is spacing Press spring base 90 is fixed on fan-shaped inframe, and the curved end of fan-shaped frame is provided with sign, and gearshift line bracket 80 is as shown in Figure 10, gearshift The upper end of line bracket 80 is nested with gearshift support bar 10.

The front-end and back-end of lower gear level 50 are provided with pin-and-hole；The front end of lower gear level 50 bends and is interspersed in gearshift fixed cover On, pin is inserted in pin-and-hole, so as to which the front end of lower gear level 50 is fixed on gear arm by fixed cover.As shown in fig. 6, During research and development, the shape for thinking nestling plate 20 due to inventor is named as nestling plate 20 then as a nestling；Nestling plate 20 middle part is transversely provided with the first axis hole 21 and the second axis hole 22, and the top of the second axis hole 22 is provided with Triaxial hole 23, the second axle The lower section in hole 22 is provided with the 4th axis hole 24；The upper end of nestling plate 20 is in pointer shape, and the top of nestling plate 20 is provided with the 6th axis hole 26, The lower end of nestling plate 20 is provided with the 5th axis hole 25；Offered on nestling plate 20 positioned at the top of first axle hole 21 and Triaxial hole 23 Breach, the position correspondence of spacing compression spring seat 90 and breach；Lower gear level 50 rear end bending and with through the 5th axis hole 25, in pin Pin is inserted in hole, the rear end of lower gear level 50 can be connected with the lower rotational of nestling plate 20.

As shown in figure 8, the end of upper gear level 40 has opened up the through hole 42 of first through hole 41 and second, the middle part of gear level is consolidated Surely there is journal stirrup 43, can be changed by bolt through the first axis hole 21 and the first axis hole 21, the second axis hole 22 and the second through hole 42 by Pin 40 is fixed on the middle part of nestling plate 20.When the free end of upper gear level 40, lift can occur to do with arm-rest frame upwards when in use When relating to, the fixing end of upper gear level 40 can be fixed the first axis hole 21 with first through hole 41 by bolt, Triaxial hole 23 with Second through hole 42 is fixed, and moves up the free end of gear level 40.When the free end of upper gear level 40 is pressed downward meeting when in use When being interfered with ground, the fixing end of upper gear level 40 can be fixed the first axis hole 21 with first through hole 41 by bolt, 4th axis hole 24 is fixed with the second through hole 42, moves down the free end of gear level 40.

As shown in figure 9, reverse gear handle 70 be provided with upper gear level 40 coordinate groove, and reverse gear handle 70 be provided with The bearing piece 71 that pull head 611 is fixedly connected；The middle part of upper gear level 40 is rotatablely connected with the handle 70 that reverses gear.As shown in figure 5, gearshift line Including spool 62 and bracing wire 61, bracing wire 61 passes through spool 62, and the two ends of spool 62 are provided with pipe sleeve 621, one of pipe sleeve 621 It is fixedly connected with journal stirrup 43, another pipe sleeve 621 is fixedly connected with gearshift line bracket 80；The two ends of bracing wire 61 are provided with pull head 611, one section of bracing wire 61 is provided with spacing compression spring 63 and locking nut 64, and spacing compression spring 63 is located at pull head 611 and locking nut Between 64.Locking nut 64 is fixedly connected with spacing compression spring seat 90, and the pull head 611 close to locking nut 64 is located at below breach, Pull head 611 away from locking nut 64 is fixedly connected with the bearing piece 71 reversed gear on handle 70.

When it is implemented, hole can be opened up in arm-rest frame relevant position, by support bar 10 of shifting gears through the hole on arm-rest frame, And gearshift support bar 10 is fixed on arm-rest frame using nut.In mechanism installation process, upper gear level 40 is adjusted to sky Gear state, the pull head 611 for line of shifting gears now is installed on indentation, there.

If in the gearshift that need not be reversed gear, on the free end vertical direction of upper gear level 40 firmly, i.e., upper lift or Person pushes the free end of gear level；The free end stress of upper gear level 40, power will be transferred to nestling by upper gear level 40 Plate 20 so that the middle part of nestling plate 20 is by upper and lower active force.The middle part stress of nestling plate 20 can make the top of nestling plate 20 Rotated along gearshift support bar 10, so as to drive the lower end swing of nestling plate 20；The lower end of nestling plate 20 swings and will pulled Lower gear level 50 moves forward and backward, so as to pull gear arm swing to realize gearshift.Due to the pull head 611 close to locking nut 64 Below breach, pull head 611 is rotated along gearshift support bar 10 to nestling plate 20 and limited so that nestling plate 20 is only capable of Rotate in certain limit, so that now mechanism can not be realized and reversed gear.

If needs reverse gear during operation, gear level 40 and the handle 70 that reverses gear can be held, and upper gear level 40 is applied Add the active force on vertical direction, i.e., hold reverse gear handle 70 when on lift or push on gear level；Upper gear level 40 rotates Gearshift can be achieved, because the free end of pull head 611 and the handle 70 that reverses gear away from locking nut 64 is fixed, the handle 70 that reverses gear of holding with a firm grip When bracing wire 61 be pulled, be drawn out close to the pull head 611 of locking nut 64 under breach, no longer block the rotation of nestling plate 20, from And operation of reversing gear can be completed by realizing mechanism；Relieving is reversed gear after handle 70, and pull head 611 stretches meeting automatically in the presence of limit spring The indentation, there of nestling plate 20.

, can be by upper gear level 40 when lift can interfere with arm-rest frame upwards when in use for the free end of upper gear level 40 Fixing end the first axis hole 21 is fixed with first through hole 41 by bolt, Triaxial hole 23 is fixed with the second through hole 42, make The free end of gear level 40 moves up, and prevents gear level 40 contacts with arm-rest frame when in use from interfering, influences mechanism Use., can consolidating upper gear level 40 when the free end of upper gear level 40 is pressed downward to interfere with ground when in use Fixed end is fixed the first axis hole 21 with first through hole 41 by bolt, the 4th axis hole 24 is fixed with the second through hole 42, makes gearshift The free end of bar 40 moves down, and prevents gear level 40 contacts with ground when in use from interfering, influences the use of mechanism.When In adjustment during the position of gear level 40, rotatable outer cover 30 of shifting gears, the position of adjustment spacing compression spring seat 90, so as to adjust indentation, there The position of pull head 611.

The top that the upper end of nestling plate 20 will be with nestling plate 20 rotates and swung, and the upper end of nestling plate 20 is in directional beacon The pointer shape shown；Therefore when nestling plate 20 is swung, sign that the upper end of nestling plate 20 will be different on carton gearshift outer cover 30；By The upper surface of gearshift outer cover 30 is arranged in sign, operator is overlooked i.e. it can be seen that sign.

Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and characteristic is not made herein in scheme Excessive description., without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art Several modifications and improvements are made, these should also be considered as protection scope of the present invention, and these are implemented all without the influence present invention Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification The records such as embodiment can be used for the content for explaining claim.

Claims (7)

1. mini-tiller lever gearshift, it is characterised in that including gearshift support frame, upper gear level, lower gear level, nestling Plate, reverse gear line and the handle that reverses gear；The gearshift support frame includes the gearshift support bar being fixed on arm-rest frame, and lower end, which is nested with, to be changed The gearshift outer cover of support bar is kept off, the gearshift line bracket with gearshift support bar rotation connection, spacing compression spring seat；The nestling plate it is upper Portion is rotatablely connected with gearshift support bar rotation connection, the bottom of nestling plate with lower gear level, the middle part of nestling plate and upper gear level It is fixedly connected；A breach is provided with nestling plate above upper gear level, spacing compression spring seat is arranged on gearshift outer cover, spacing The position of press spring base is corresponding with breach；The reverse gear middle part of handle and upper gear level is rotatablely connected, positioned at the handle that reverses gear on upper gear level Position between hand and nestling plate is provided with journal stirrup；The line that reverses gear includes spool and the bracing wire through spool, and spool two ends are provided with pipe Set, a pipe sleeve are fixed with journal stirrup, and another pipe sleeve is connected with gearshift line bracket；One end of bracing wire is provided with gearshift stage clip and locking Nut, bracing wire two ends are provided with pull head, and spacing compression spring is between pull head and locking nut；Locking nut is consolidated with spacing compression spring seat Fixed connection, the pull head close to locking nut are located at below breach, and the free end of pull head and the handle that reverses gear away from locking nut is consolidated It is fixed.

2. mini-tiller lever gearshift as claimed in claim 1, it is characterised in that the gearshift outer cover is fan-shaped frame, The spacing compression spring seat is located at fan-shaped inframe.

3. mini-tiller lever gearshift as claimed in claim 2, it is characterised in that on the curved end of the fan-shaped frame Provided with sign, the nestling plate upper end is the pointer shape for pointing to sign.

4. mini-tiller lever gearshift as claimed in claim 1, it is characterised in that the handle that reverses gear is provided with and drawing The bearing piece that head is fixedly connected.

5. mini-tiller lever gearshift as claimed in claim 4, it is characterised in that it is described reverse gear handle be provided with it is upper The groove that gear level coordinates.

6. mini-tiller lever gearshift as claimed in claim 1, it is characterised in that also including bolt, the nestling plate Middle part be transversely provided with the first axis hole and the second axis hole, the end of the upper gear level is provided with and the first axis hole and the second axis hole phase To first through hole and the second through hole；First axis hole and first through hole are bolted to connection, the second axis hole and the second through hole It is bolted to connection.

7. mini-tiller lever gearshift as claimed in claim 6, it is characterised in that the top of second axis hole is provided with Triaxial hole, the lower section of the second axis hole are provided with the 4th axis hole.