CN202406535U

CN202406535U - Grass cutter

Info

Publication number: CN202406535U
Application number: CN201120388548XU
Authority: CN
Inventors: 汤贺; 顾娟
Original assignee: Suzhou Cleva Electric Appliance Co Ltd
Current assignee: Suzhou Cleva Electric Appliance Co Ltd
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-09-05
Anticipated expiration: 2021-10-13

Abstract

The utility model discloses a grass cutter, which comprises a base, and a lifting device and a grass pressing device arranged on the base, wherein the lifting device comprises a wheel shaft with an arc-shaped moving track, and can be lifted along a first direction; a roller is arranged on the wheel shaft; the grass pressing device comprises a fitting piece and a drum; the fitting piece is connected with the drum and the wheel shaft respectively; the fitting piece is connected with the base through an arc-shaped sliding chute and a convex column which are matched with each other; and the position of the fitting piece can be changed relative to the base along the first direction, so that an accurate grass cutting height and a better grass pressing effect can be achieved.

Description

Mower

Technical field

The utility model relates to a kind of mower, refers in particular to a kind of arrangement for adjusting height and mower of pressing careless device of having simultaneously.

Background technology

BP is announced 2352956B number and has been disclosed a kind of mower; Shown in figure 12; It comprises base 11; Height-regulating device is installed on this base 11, presses careless device and some rollers 12, wherein height-regulating device is formed by being located at the gear groove 14 on the base 11, the wheel shaft 13 that is installed on base 11 and extension spring 16, presses careless device to be made up of counterpart 19 and cylinder 17.Said roller 12 is installed on the wheel shaft 13, and said counterpart 19 is roughly triangular in shape, and first end 20 is rotatably mounted on the base 11, and second end links to each other with cylinder 17, and the 3rd end has the mounting hole 21 that links to each other with wheel shaft 13.

When height was mowed in need adjustment, operator is stirred wheel shaft 13 got in the corresponding gear groove 14 it, and spring 16 can guarantee that wheel shaft 13 can not deviate from outside the corresponding gear groove 14.In addition; Driving counterpart 19 when wheel shaft 13 moves up and down in each gear groove 14 moves together; Wheel shaft 13 also relatively moves with counterpart 19 in mounting hole 21 simultaneously; Because cylinder 17 links to each other with counterpart 19 through rotating shaft 18, so cylinder 17 also moves with wheel shaft 13 under the drive of counterpart 19.

In height adjustment process; The movement locus of wheel shaft 13 is straight lines of vertically going up; The movement locus of rotating shaft 18 then is that the end 20 with counterpart 19 is the curve of fulcrum rotation; Therefore the displacement of both in the vertical directions is unequal, thereby can derive roller 12 bottoms and cylinder 17 bottoms are changing perpendicular to the spacing on the direction of ground, is not invariable.If the cylinder bottom exceeds the roller bottom gradually, then can influence and press careless effect; If the roller bottom exceeds the cylinder bottom gradually, then the fuselage of mower will produce inclination, thereby will influence the normal height of mowing, and make operator can't normally promote mower simultaneously.So, need a kind of improved mower to address the above problem.

The utility model content

The purpose of the utility model is to provide a kind of mower that assembles simple and highly versatile.

To achieve these goals; The utility model adopts following technical scheme: a kind of mower, and height-regulating device and the careless device of pressure that it comprises base and is installed on this base, said height-regulating device comprises the wheel shaft with arcuate movement track; This wheel shaft can be regulated at the enterprising line height of first direction; And on this wheel shaft roller is installed, said pressure grass device comprises counterpart and cylinder, and this counterpart links to each other with said wheel shaft with cylinder respectively; Counterpart links to each other with projection through the arc chute that cooperatively interacts with base, and counterpart can base occurrence positions conversion relatively on said first direction.

Said chute is located on the counterpart, and said projection is located on the base.

Said chute is located on the base, and said projection is located on the counterpart.

Said chute comprises inside groove and the bigger water jacket of groove width that groove width is less, and said projection inserts in inside groove, be located in the water jacket with the circular gasket that the end of projection links to each other, and formed concave surface is relative between this pad and the inside and outside groove.

Said counterpart comprises that first through hole that supplies said wheel shaft to pass reaches in order to second through hole of said cylinder to be installed, and said deep-slotted chip breaker is located between this two through hole.

Said wheel shaft and the cylinder spacing on said first direction is always a constant, and both also are being always a constant perpendicular to the spacing on the second direction of first direction.

Said height-regulating device also comprises a plate; The link that this plate has the positioning end that links to each other with base and links to each other with wheel shaft with counterpart, the arching trajectory of said wheel shaft are to be that the center of circle is the circular arc of radius with the length between positioning end to the link with said positioning end.

Said wheel shaft is a hind axle, and height-regulating device also comprises front axle, the baffle plate that links to each other with front axle and the connecting rod that is connected this plate and baffle plate.

Said height-regulating device comprises the mechanism of transferring the files that links to each other with connecting rod, and this mechanism of transferring the files comprises the bearing that is provided with the gear groove and connects the handle of this bearing and connecting rod, but this handle is provided with the projection in buckle and the said gear groove.

Said base is provided with the accepting groove that holds said bearing, and the said mechanism of transferring the files also comprises the spring of being located in the bearing, and this spring one end is fixed in base, and the other end is fixed on the said connecting rod.

Compared with prior art, the utility model mower is provided with chute on counterpart, and it is that the wheel shaft height is regulated occurrence positions conversion on the direction at said first direction that this chute makes counterpart, so when height is mowed in adjustment; Counterpart and wheel shaft are synchronized with the movement on first direction; And the pressure that links to each other with counterpart grass cylinder also is synchronized with the movement with wheel shaft on first direction; Thereby can guarantee cylinder bottom and roller bottom constant all the time, and then obtain to mow highly accurately and press careless effect preferably perpendicular to ground spacing.

Description of drawings

Fig. 1 is the stereogram of the utility model mower.

Fig. 2 is the stereogram of the utility model mower part-structure.

Fig. 3 is the stereogram of base.

Fig. 4 is the exploded view of Fig. 2.

Fig. 5 is the exploded view of base, height-regulating device and pressure grass device.

Fig. 6 is the front view of counterpart.

Fig. 7 is the exploded view of mechanism of transferring the files, and does not wherein comprise spring.

Fig. 8 is front axle, hind axle, height-regulating device and the assembly drawing of pressing careless device.

Fig. 9 is the sketch map that forms chute on the counterpart.

Figure 10 is that the utility model mower is in minimum front view of mowing during height.

Figure 11 is that the utility model mower is in the highest front view of mowing during height.

Figure 12 is the sketch map of the prior art relevant with the utility model mower.

Embodiment

Ginseng Fig. 1 and shown in Figure 2, the utility model mower comprises base 1, is covered in the cover 2 on this base 1, the blade 3 that is installed on base 1, some rollers 4, height-regulating device 5 and presses careless device 6.Height-regulating device 5 in the utility model is the four link type height-regulating device that the people in the industry was familiar with.

Ginseng Fig. 2, shown in 3, base 1 is provided with the groove that is recessed to form 11 and accepting groove 12 downwards, this groove 11 and accepting groove 12 settings adjacent one another are, its further groove 11 is in order to accommodate motor (not shown), accepting groove 12 is in order to the holding portion height-regulating device.In addition, base 1 also is provided with the circular cavity 13 that Open Side Down, and said blade 3 is positioned at this cavity 13.Base 1 forward and backward two ends are respectively equipped with forward and backward

installation portion

14,15, and base 1 is provided with through hole 16 usefulness so that said accepting groove 12 communicates with forward and backward

installation portion

14,15.

Ginseng Fig. 2, Fig. 4 and shown in Figure 5, height-regulating device 5 comprise front axle 17, the baffle plate 51 that links to each other with front axle 17 1 ends, hind axle 18, the plate 52 that links to each other with hind axle 18, be connected the connecting rod 53 and the mechanism 54 of transferring the files of this baffle plate 51 and plate 52.Wherein, front axle 17 is installed on the preceding installation portion 14 of base 1 with baffle plate 51, and this front axle 17 comprises central shaft 171, be positioned at the bias axis 172 of these central shaft 171 both sides and connect the connecting portion 173 of this central shaft 171 and bias axis 172.In the recess 141 before central shaft 171 is installed on the installation portion 14, and base 1 is fixed in through pad and screw (not label) in central shaft 171 two ends.Preceding installation portion 14 both sides are provided with the host cavity 142 of accommodating this connecting portion 173 and baffle plate 51, and said bias axis 172 outwards passes this host cavity 172 in order to roller to be installed.Said baffle plate 51 is provided with the recess 511 of centre of location axle 171 and supports the catch 512 of said connecting portion 173, and this catch 512 outwards bends from baffle plate 51 and forms.For ease of assembling, baffle plate 51 can be fixed in through several different methods with front axle 17, and in the utility model, both are fixed in one through welding manner and form an assembly, are assembled on the base 1 with screw by above-mentioned pad during assembling.

Join Fig. 4, shown in 5, hind axle 18, plate 52 be installed on the back installation portion 15 of base 1 and are pressed careless device 6, press careless device 6 to comprise continuous counterpart 61 and cylinder 62.Base 1 is provided with a pair of recess 151, one stocks 19 two ends and is positioned respectively in this two recess 151 on the installation portion 15 of back, and is fixed in base 1 through pad and screw (not shown).Said plate 52 is triangular in shape; Its three angles are provided with perforation; Stock 19 is inserted in first perforation 521, and a bearing pin 100 passes second perforation 522 and plate 52 is linked to each other with connecting rod 53, and hind axle 18 passes third through-hole 523 and plate 52 is linked to each other with counterpart 61.Stock 19 1 ends link to each other with plate 52, and the other end links to each other with assembly parts 102.For ease of assembling; Above-mentioned plate 52, stock 19, hind axle 18 and assembly parts 102 also can be fixed in together in several ways; In the utility model; Also be fixed in one through welding manner and form an assembly, the pad by said fixedly stock 19 during assembling is assembled in base 1 with screw.Plate 52 is a positioning end with i.e. first perforation of an end that links to each other with base 1 521 places, and i.e. the 3rd perforation of an end that links to each other with counterpart 61 523 places are link.In addition, because the angle that plate 52 has only an angle promptly to link to each other with stock 19 is fixed in base 1, so plate 52 can rotate for rotating shaft by stock 19.

Ginseng Fig. 4 is to shown in Figure 6; Counterpart 61 links to each other with plate 52, cylinder 62 and base 1 simultaneously; Its shape roughly is the rectangle that is reamed an angle; And two relative corners are provided with first installing hole 611 and second installing hole 612 down above that, and wherein first installing hole, 611 usefulness are passed for said hind axle 18 and linked to each other with plate 52, and second installing hole, 612 usefulness are inserted and are assembled in together for the protruding axle 621 of cylinder 62 ends.Because counterpart 61 is reamed an angle, therefore form a hypotenuse 613 that matches with base 1.Secondly; Counterpart 61 also comprises the arc chute 614 between first, second installing hole; This chute 614 runs through inside and outside two sides of counterpart 61, and comprises two parts, is respectively inside groove 6141 that extends from counterpart 61 medial surfaces and the water jacket 6142 that extends from counterpart 61 lateral surfaces.The groove width of said water jacket is formed with one and cooperates concave surface 6143 greater than the groove width of inside groove between the inside and outside groove like this dimensionally.Base 1 is provided with a projection 152 in its corresponding position; This projection 152 is after counterpart 61 medial surfaces insert inside groove 6141; One be provided with circular hole circular gasket 103 get into water jacket 6142 and place the end of projection 152 from counterpart 61 lateral surfaces, this pad 103 links together through a screw 104 with projection 152.The diameter of projection 152 matches with the groove width of inside groove 6141 dimensionally; The diameter of pad 103 matches with the groove width of water jacket 6142; Be the diameter of the diameter of pad 103 greater than projection 152; Therefore pad 103 receives stopping of said concave surface 6143 and can't deviate from outside the chute 614, so just counterpart 61 and base 1 is linked together.In addition, mower is in height adjustment process, and connecting rod 53 will drive plate 52 rotations; 52 drive counterparts 61 of plate; And then relative motions will take place with projection 152 in chute 614, and promptly projection 152 will slide in chute 614, and the motion process of counterpart 61 will specifically describe hereinafter.

Ginseng Fig. 3, Fig. 5 and shown in Figure 7, the mechanism 54 of transferring the files comprises bearing 541, handle 542, spring 543 and the runing rest 544 that links to each other with handle 542, torsion spring 545 and assembled shaft 546.Wherein, bearing 541 is the U-shaped framework of punching press bending forming, and it comprises in order to the diapire 5411 of placing spring 543 and the upright side walls 5412 that forms of 5411 liang of lateral bucklings of this diapire certainly.Said handle 542, runing rest 544, torsion spring 545 and the assembled shaft 546 common one handle assemblies that form; This Handleset is passed down through diapire 5411 from bearing 541 tops; The projection 5441 of runing rest 544 both sides is arranged at respectively in the locating hole 5413 of 5412 bottoms, two side, thereby Handleset is assembled on the bearing 541.The mechanism 54 of transferring the files that assembling is accomplished places in the accepting groove 12 of base 1; In the corresponding locating hole 5414 that inserts on the diapire 5411 of a plurality of reference columns (not shown) on the base 1, insert locating hole 5414 by some screws (not shown) then and the mechanism 54 of will transferring the files is fixed on the base 1.In addition, a wherein sidewall of bearing 541 is provided with some gear grooves 5415, and handle 542 is provided with the projection 5421 that can be buckled in these gear grooves 5415.Spring 543 is arranged in the bearing 541, and the one of which end is fixed in base 1, and another end hook is located on the tabs 531 of connecting rod 53.

During assembling, the component groups that at first front axle 17 and baffle plate 51 is formed is loaded on the preceding installation portion 14 of base 1, the component groups of plate 52, major axis 19, hind axle 18 and assembly parts 102 formation is loaded on the back installation portion 15 of base 1; Then will press careless device 6 to be assembled in base 1 and link to each other with hind axle 18; Next mechanism 54 of will transferring the files is assembled in the accepting groove 12 of base 1; Then connecting rod 53 is passed the through hole 16 of base 1; Set jack 513 on the axis hole (not shown) that one bearing pin (not label) inserts connecting rod 53 1 ends and the baffle plate 51 and connecting rod 53 and baffle plate 51, front axle 17 are fitted together; The axis hole (not shown) that another bearing pin (not label) inserts connecting rod 53 other ends fits together connecting rod 53 and plate 52, hind axle 18 with second perforation 522 of plate 52; Bearing pin 105 passes the mating holes (not shown) on through hole 5422 and the connecting rod 53 on the handle 542, thereby handle 542 and connecting rod 53 are linked together; At last roller 4 (see figure 1)s are installed on the forward and

backward wheel shaft

17,18.

Join shown in Figure 2; Roller bottom and the non-constant defective that produces of the spacing of cylinder bottom on the height adjustment direction when improving in the background technology mower height adjustment; The utility model is through being provided with the counterpart 61 that links to each other with cylinder 62 and hind axle 18 simultaneously; Thereby make cylinder 62 synchronous all the time, and then guarantee that both displacements on the height adjustment direction equate with the motion of hind axle 18.The following specifically describes height-regulating device 5 and the motion conditions of pressing careless device 6 in the height adjustment process.

The ginseng Fig. 5, shown in 8; When height was mowed in the needs adjustment, the operator pulls handle 542 withdrawed from projection in original gear groove 5415, then projection 5421 (see figure 7)s are buckled in the corresponding gear groove; Handle 542 drivening rods 53 motions this moment; It is that the axle center rotates with major axis 19 that 53 on connecting rod drives plate 52, and counterpart 61 is because of linking to each other with plate 52 motions with

plate

52, and 152 of the projections on the base 1 slide in said chute 614.At this, one of effect that projection 152 and chute 614 are equipped with is that counterpart 61 is positioned on the base 1, and so cylinder 62 will receive the support force effect of base 1 and realize pressing careless function.Otherwise if no any fixing between counterpart 61 and the base 1, cylinder 62 will ride on the careless plane and nothing is defeated grass.In addition; Projection 152 is exactly to guarantee that counterpart 61 is in vertical state all the time with another effect that chute 614 is equipped with; Being that counterpart 61 its two vertical edges 615,616 in motion process can find out that all the time perpendicular to ground these two vertical edges, 615,616 place directions are the height adjustment direction, is first direction in this this direction of definition; The fore-and-aft direction that defines mower ground of living in addition is a second direction, and first direction is vertical each other with second direction.Why counterpart can be in vertical state all the time, depends primarily on the shape of chute 614, below will mainly describe the forming process of chute 614.

The counterpart 61 that draws with solid line among Fig. 9 is in primary importance I, combines shown in Figure 5ly again, and the first perforation 521 places place (being place, major axis 19 positions) is labeled as O on the plate 52 ₁, place, the 3rd perforation 523 places (being the place, first installing hole, 611 places and the place, hind axle 18 positions of counterpart 61) is labeled as O ₂, projection 152 positions are labeled as O ₃Because plate 52 is with O ₁Be the fulcrum rotation, the movement locus that therefore connects the hind axle 18 of plate 52 and counterpart 61 is with O ₁Be the center of circle, length O ₁O ₂Be the circular arc of radius, can under the situation that keeps vertical state, move for guaranteeing counterpart 61 that said chute 614 must also be a circular arc also, this circular arc can draw through mapping, and the mapping step is following:

1. with O ₁Be center of circle O ₁O ₂For radius is drawn a circular arc, counterpart 61 is that track is done translational motion with this circular arc, and direction is the direction of arrow among Fig. 9;

2. counterpart 61 is moved to second place II along said circular arc from primary importance I, the position O of original projection 152 relative engagement part 61 when primary importance I _3IBe retained to second place II, and on second place II, be noted as O _3I', can obtain under the second place II state position O of projection 152 relative engagement parts 61 simultaneously _3II

3. counterpart 61 is moved to the 3rd position III along said circular arc from second place II, the position O of original projection 152 relative engagement part 61 when primary importance I _3IContinue again to be retained to the 3rd position III being retained to second place II, and on the 3rd position III, be noted as O _3I", in addition, the position O of original projection 152 relative engagement part 61 when second place II _3IIAlso be retained to the 3rd position III, and on the 3rd position III, be noted as O _3II', can obtain under the 3rd position III state position O of projection 152 relative engagement parts 61 simultaneously _3III, that need explain at this is O _3I, O _3II, O _3IIIBe illustrated respectively in the position of projection 152 relative engagement parts 61 under first, second, third state, because projection 152 is located on the base 1, therefore the position of projection 152 is constant all the time in counterpart 61 translation processes, i.e. O _3I, O _3II, O _3IIIBe same position O ₃

4. according to 3 O _3I", O _3II', O _3IIIJust can the draw arching trajectory of chute 614 of the principle that can confirm a circle;

5. the concrete shape that just can draw chute 614 according to the diameter of projection 152 and pad 103.

Why making counterpart 61 be in vertical state all the time in the utility model, is because in this case, and the size of counterpart 61 is minimum, can reduce its material consumption, reaches the purpose that reduces cost; Secondly, counterpart self does not have run-off the straight in motion process, and therefore its motion amplitude is less on said second direction, thereby when design, need not to provide more space to move for it, the purpose that reach reduced in size, reduces design difficulty.

Figure 10 and Figure 11 have shown that mower is at minimum height and the highest sketch map of mowing during height of mowing.When minimum mowing height, projection 152 is positioned at the lowermost end of chute 614, in the highest mowings highly the time, and 152 tops that are positioned at chute 614 of projection.Process from minimum to the highest height of mowing; Counterpart 61 is in vertical state all the time; So not only make hind axle 18 equate in the distance that said first party moves upward, and make both on the position of not departing from first direction, move all the time with cylinder 62, promptly both not only the spacing on first direction equate all the time; And the spacing on said second direction also equates all the time; Therefore not only roller 4 bottoms and the cylinder 62 bottoms spacing on first direction is a constant, and cylinder 62 can counter roller 4 not squint on second direction to some extent, thereby can obtain to press preferably careless effect.In addition; A kind of four connecting rod height-regulating devices have only been showed in this embodiment; The pressure grass device of the utility model is equally applicable to other height-regulating devices beyond other forms of four connecting rod height-regulating devices or the four connecting rod height-regulating devices, so the pressure of the utility model grass device has stronger versatility.

Claims

1. mower; Height-regulating device and the careless device of pressure that it comprises base and is installed on this base; Said height-regulating device comprises the wheel shaft with arcuate movement track, and this wheel shaft can be regulated at the enterprising line height of first direction, and on this wheel shaft roller is installed; The careless device of said pressure comprises counterpart and cylinder; This counterpart links to each other with said wheel shaft with cylinder respectively, it is characterized in that: counterpart links to each other with projection through the arc chute that cooperatively interacts with base, and counterpart can base occurrence positions conversion relatively on said first direction.

2. mower as claimed in claim 1 is characterized in that: said chute is located on the counterpart, and said projection is located on the base.

3. mower as claimed in claim 1 is characterized in that: said chute is located on the base, and said projection is located on the counterpart.

4. like claim 2 or 3 described mowers; It is characterized in that: said chute comprises inside groove and the bigger water jacket of groove width that groove width is less; Said projection inserts in inside groove, be located in the water jacket with the circular gasket that the end of projection links to each other, and formed concave surface is relative between this pad and the inside and outside groove.

5. mower as claimed in claim 4 is characterized in that: said counterpart comprises that first through hole that supplies said wheel shaft to pass reaches in order to second through hole of said cylinder to be installed, and said deep-slotted chip breaker is located between this two through hole.

6. mower as claimed in claim 1 is characterized in that: said wheel shaft and the cylinder spacing on said first direction is always a constant, and both also are being always a constant perpendicular to the spacing on the second direction of first direction.

7. mower as claimed in claim 5; It is characterized in that: said height-regulating device also comprises a plate; The link that this plate has the positioning end that links to each other with base and links to each other with wheel shaft with counterpart, the arching trajectory of said wheel shaft are to be that the center of circle is the circular arc of radius with the length between positioning end to the link with said positioning end.

8. mower as claimed in claim 7 is characterized in that: said wheel shaft is a hind axle, and height-regulating device also comprises front axle, the baffle plate that links to each other with front axle and the connecting rod that is connected this plate and baffle plate.

9. mower as claimed in claim 8; It is characterized in that: said height-regulating device comprises the mechanism of transferring the files that links to each other with connecting rod; This mechanism of transferring the files comprises the bearing that is provided with the gear groove and connects the handle of this bearing and connecting rod, but this handle is provided with the projection in buckle and the said gear groove.

10. mower as claimed in claim 9 is characterized in that: said base is provided with the accepting groove that holds said bearing, and the said mechanism of transferring the files also comprises the spring of being located in the bearing, and this spring one end is fixed in base, and the other end is fixed on the said connecting rod.