CN104798526B - Grass trimmer - Google Patents

Abstract

The invention relates to a grass trimmer. The grass trimmer comprises an operation rod, a handle arranged at one end of the operation rod and a working head at the other end, wherein the working head comprises a shell, a motor arranged in the shell, a cutting line driven by the motor to rotate in a working plane around a first axis and a protective housing connected to the shell; the working head can be switched in a grass trimming state in which the cutting line rotates horizontally and a trimming state that the cutting line rotates vertically; the grass trimmer is also provided with a roller component; the roller component comprises a supporting frame, a roller arranged on the supporting frame and a position changing device for connecting the supporting frame to the protective housing and adjusting the position of the supporting frame; the position of the supporting frame opposite to the operation rod can be changed with the working state of the working head to facilitate the support of the working head by the roller to work. Because of such arrangement of the roller component, the manufacturing and transportation cost can be reduced, the overall weight of the grass trimmer is reduced, the user can quickly and easily switch the position of the roller without disassembling the roller so as to meet the requirement of the grass trimming and trimming operation on the roller.

Description

Grass-mowing machine

Technical field

The present invention relates to a kind of grass-mowing machine, more particularly, to a kind of have concurrently beat the grass and trimming function grass-mowing machine.

Background technology

Grass-mowing machine, as a kind of garden instrument arranging turf, is just favored by more and more users, but meanwhile, User it is also proposed higher and higher requirement to the function of grass-mowing machine.

Common grass-mowing machine on market, in order to meet user to the trimming on perpendicular or step surface, trimming function Need, a roller accessory typically all can be installed on grass-mowing machine, to play the effect to work head support guide during deburring；Separately Outward, when grass-mowing machine is in horizontal resection state, roller accessory also can be installed additional on grass-mowing machine in manufacturers, so that user is being beaten It is not required to when careless for hanging for grass-mowing machine, hand steered the handle head that just can push the work forward lawn be carried out with horizontal resection, work head quilt Roller structure supports, just more laborsaving during use, reduces the use fatigue strength of user.

Although install two groups of roller accessories can make grass-mowing machine beat the grass and two kinds of working conditions of deburring under have roller to carry out Support and guide, but due to grass-mowing machine beat the grass and trimming function can not be realized simultaneously, a kind of work shape therefore wherein Under state, another roller accessory is unnecessary, on the one hand increased the manufacturing and cost of transportation；On the other hand so that beating the grass The main screw lift of machine is larger, virtually brings inconvenience to user.

The Chinese patent application of Application No. " 201210263972.0 " discloses a kind of grass-mowing machine, states function in realization While, roller accessory is reduced to one, when changing the mode of operation of work head, roller can be disassembled, then weigh Newly it is installed to the position of needs, with the needs of pair roller when meeting deburring or beating the grass.But such structure setting makes user every It is required for dismounting roller during the mode of operation of secondary change grass-mowing machine to reinstall, not only complex operation, and roller is in work again During be inevitably stained with grass cuttings and soil, also so that operate inadequate health.

Content of the invention

The technical problem to be solved in the present invention：A kind of improved grass-mowing machine is provided, enables users to quick, simple adjustment roller Position with support and guide grass-mowing machine beat the grass or deburring state under efficient operation.

The present invention solves the technical scheme that above-mentioned technical problem is adopted：A kind of grass-mowing machine, including the behaviour extending longitudinally Vertical pole, located at the handle of described stick one end, located at the work head of the described stick other end, described work head includes shell Body, is arranged at the motor in described housing, drives, by described motor, the line of cut rotating in working face around first axle, And it is connected to guard shield on described housing, described work head can be rotated with vertical in the state of beating the grass of line of cut horizontal rotation Deburring state between change, described grass-mowing machine is additionally provided with roll wheel assembly, and described roll wheel assembly includes bracing frame, is installed on described Roller on support and bracing frame is connected on guard shield and adjusts the transposer supporting rack position, support frame as described above phase The position of stick can be converted so that roller switches between primary importance and the second position with the working condition of work head, institute State roller and there is roller centrage, when roller is in primary importance, described work head is in the state of beating the grass, described roller centrage Vertical with first axle, when roller is in the second position, described work head is in deburring state, described roller centrage and first Diameter parallel.

Compared with prior art, beneficial effects of the present invention：Grass-mowing machine has the disposable roll wheel assembly in position, works as work When beating the grass switching and deburring state between, roll wheel assembly also quickly, neatly can be changed the mode of operation of head according to using needs Become position, to meet the needs of different working condition pair rollers, and roll wheel assembly need not be dismantled during changing position, Roll wheel assembly after therefore improving can not only reduces cost, mitigate main screw lift, also there is operation quick, simple, flexibly etc. excellent Point, fully meets the use demand of consumer.

Preferably, when described roller is in primary importance, described roller centrage is vertical in first axle with first axle Distance in face is not more than 50mm.Further, when roller is in primary importance, described roller centrage is vertical with first axle Intersecting.Now grass-mowing machine executes the operation of beating the grass on horizontal plane, and grass-mowing machine obtains good support, and line of cut will not when beating the grass It is made to be hindered by grass in the course of the work and the state of killing occurs because of the crank of work head.

Preferably, support frame as described above has two ends, and described transposer is connected to first end, and described roller connects In the second end.

Preferably, support frame as described above is provided with stage portion between first end and the second end.The setting of stage portion can make Work head is no matter under deburring or state of beating the grass, roller can play good supporting role, and without prejudice to line of cut is flat in work Work in face, make the nose heave heart of work more steady, be conducive to grass-mowing machine efficient operation.

Preferably, support frame as described above is network.The setting of network can not only mitigate main screw lift, and can save About material, reduces cost.

Preferably, support frame as described above is provided with spill operating space in first end, and operating space is provided with anti-slip veins.Due to adjusting During section scroll wheel positions, user needs to grip and rotary support frame, and spill operating space and anti-slip veins can be more convenient user operation.

Preferably, described guard shield is provided with the match connecto connecting with transposer.Further, described guard shield includes The cover that radially extends along first axle and enclose face by what cover extended, described match connecto includes setting along first axle radial direction The locating slot put, described locating slot includes notch and bottom land, and described notch is located at the junction of described cover and the face of enclosing, described fixed Position groove includes the first groove section near bottom land and the second groove section near notch, and the cross sectional dimensions of the first groove section are more than the second groove Section, and it is provided with stage portion between the first groove section and the second groove section.

Preferably, described transposer includes the support shaft of the mobile setting of relative localization groove and the elasticity being sheathed on support shaft Element, described support shaft has the axis that support shaft rotates about, and includes extending into the head end portion of locating slot the first groove section And the terminal part connecting with support frame as described above, described flexible member is between support shaft head end portion and locating slot stage portion；Institute When stating roller and being in primary importance or the second position, described support shaft is held in locating slot in the presence of described flexible member In, in primary importance with second position handoff procedure, described support shaft overcomes flexible member active force to notch to described roller Move so that support shaft rotates around support shaft axis.

Preferably, it is provided with fixed mechanism between described roll wheel assembly and guard shield, described roller is locked in by described fixed mechanism Primary importance or the second position.

Preferably, described fixed mechanism includes roller is locked in the first fixed mechanism of primary importance or the second position. After regulating scroll wheel positions on demand, be the position of lockable roller and bracing frame with the first fixed mechanism, limit bracing frame and Roller moves radially and limits bracing frame and roller and rotates around support shaft axis with support shaft.

Preferably, recessed on the projection and support frame as described above that described first fixed mechanism includes being arranged on described guard shield Groove, when described roller is in primary importance or the second position, described projection and groove are in card and state, and described roller is first In position and second position handoff procedure, described projection and groove are in disengaged condition.

Preferably, described fixed mechanism further includes roller is locked in the second fixed mechanism of the second position.

Preferably, the guide rail on slide block and guard shield that described second fixed mechanism includes being arranged on support frame as described above, institute When stating roller and being in the second position, described slide block and guide rail are in card and state.When grass-mowing machine is in vertical deburring state, roller It is in the second position, now the second fixed mechanism pair roller on the basis of the first fixed mechanism carries out second and fixes again, limit Bracing frame and roller rock along first axle direction.

Brief description

Fig. 1 is the schematic perspective view of grass-mowing machine and its roll wheel assembly in the present invention.

Fig. 2 is that grass-mowing machine of the present invention is in the state of beating the grass and roller is in the schematic perspective view of primary importance.

When Fig. 3 is that roller is in primary importance, the position view of roller centrage and first axle.

Fig. 4 is that grass-mowing machine of the present invention is in deburring state and roller is in the schematic perspective view of the second position.

Fig. 5 is the structural representation of bracing frame in roll wheel assembly of the present invention.

Fig. 6 is the close-up schematic view of grass-mowing machine work head in Fig. 1.

Fig. 7 is the top view of grass-mowing machine work head.

Fig. 8 is to work a guard shield in Fig. 7 along the phantom of line A-A.

Fig. 9 is the grass-mowing machine partial schematic diagram that in the present invention, roller is in primary importance.

When Figure 10 is that roller is in primary importance, the sectional view of Local C line A-A along along Fig. 7.

When Figure 11 is that roller is in primary importance, the sectional view of local D line B-B along along Fig. 7.

Figure 12 is the grass-mowing machine partial schematic diagram that in the present invention, roller is in the second position.

When Figure 13 is that roller is in the second position, the sectional view of Local C line A-A along along Fig. 7.

When Figure 14 is that roller is in the second position, the sectional view of local D line B-B along along Fig. 7.

Figure 15 is grass-mowing machine partial schematic diagram in the present invention, and now roller is in primary importance and the first fixed mechanism and Two fixed mechanisms are in released state.

When Figure 16 is that roller is in the position in Figure 15, the sectional view of Local C line A-A along along Fig. 7.

Figure 17 is grass-mowing machine partial schematic diagram in the present invention, and now roller is in the position after its acute angle that turns clockwise Put, the first fixed mechanism and the second fixed mechanism are in released state.

When Figure 18 is that roller is in the position in Figure 17, along the sectional view of line A-A in Local C Fig. 7.

Figure 19 is grass-mowing machine partial schematic diagram in the present invention, and now roller is in the second position and the first fixed mechanism and Two fixed mechanisms are in released state.

When Figure 20 is that roller is in the position in Figure 19, along the sectional view of line A-A in Local C Fig. 7.

When Figure 21 is that roller is in the position in Figure 19, along the sectional view of line B-B in the D Fig. 7 of local.Wherein

1. grass-mowing machine 100. Handleset 10. main handle

12. auxiliary-handle, 300. stick 400. work head

40. housing 42. guard shield 42a. cover

42b. encloses face 420. projection 421. locating slot

421a. the first groove section 421b. the second groove section 422. guide rail

The vertical of 44. shield flower steel 46. line of cut work surface 47. first axles

471. flat circle, 500. roll wheel assembly 50. roller

52. bracing frame 52a. bracing frame first end 52b. bracing frame the second ends

520. groove, 522. slide block 54. support shaft

54a. support shaft the first shaft part 54a1. support shaft head end portion 54b. support shaft the second shaft part

54b1. support shaft terminal part 55. collar 56. flexible member

58. roller shaft X. first axle Y. roller centrages

Z. support shaft axis

Specific embodiment

Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings.

Present invention is disclosed a kind of have the grass-mowing machine 1 beaten the grass with trimming function concurrently.

With reference to shown in Fig. 1, grass-mowing machine 1 includes the stick 300 extending longitudinally, and one end of stick 300 is provided with handle Assembly 100, in the present embodiment, Handleset 100 includes main handle 10 and assist handle 12, and main handle 10 is located at stick 300 end.Assist handle 12 is pivotably connected to the opposite side of main handle 10, is beneficial to and adjusts comfortable gripping angle Operator's hands grasping grass-mowing machine 1 is made to execute cutting operation.In operation, user can grip main handle 10 with handss, another Handss grip assist handle 12 and are beaten the grass or deburring operation, effectively reduce the feeling of fatigue of one-handed performance.Certainly, in other realities Apply under mode, Handleset can also only set a handle.Stick 300 is generally additionally provided near the position of Handleset 100 Power source reception device, in order to receive power source, the direct-current lawn mower 1 in the present embodiment is provided with battery bag below main handle 10 Attachment means, can connect battery bag, provide power for grass-mowing machine, it is, of course, also possible to install gasoline engine or with the external friendship of power line Flow electricity to obtain power.

Stick 300 is typically provided with expansion regulating mechanism, can according to the length of the demand adjustable telescopic rod of user, with Reach comfortable Consumer's Experience.Stick 300 is provided with work 400 away from the other end of Handleset 100, stick 300 with It is typically provided arrangement of clutch between work 400 to facilitate the position of pivotal adjustment work head relative manipulation bar, make work 400 Beat the grass in level and change between state and vertical deburring state.Work 400 includes housing 40, is provided with motor in housing 40, Under the driving of motor, it is installed on the line of cut of work 400 bottom in working face 46 around first axle X high-speed rotation, from And the grass on ground is cut.Unexpected injury human body being likely to result in order to avoid operation of beating the grass, work 400 sets It is equipped with guard shield 42.In order to accidentally injure flowers when preventing from beating the grass, work 400 is additionally provided with shield flower steel wire 44.

In the present invention, the movement of grass-mowing machine 1 and guiding during work for convenience, grass-mowing machine 1 also includes a secondary roller Assembly 500, is connected on guard shield 42, and the position relative manipulation bar 300 of roll wheel assembly 500 and work 400 can convert, When the mode of operation of work 400 is when beating the grass switching and deburring state between, roll wheel assembly 500 need not be dismantled can be according to making With needing quickly, neatly to make roller 50 switch between primary importance and the second position.The roll wheel assembly 500 of so setting was both full Foot is beaten the grass and needs to support wheel for the two kinds of working conditions of deburring, also reduces the manufacture cost of transportation of grass-mowing machine 1 and whole machine Weight is it is often more important that switching scroll wheel positions are simple and quick.

With reference to shown in Fig. 1, Fig. 2, when roller is in primary importance, work 400 is in the state of beating the grass, roller centrage Y Vertical with first axle X, roller is as support wheel of beating the grass.Preferably, shown in reference Fig. 3, roller 50（In figure is not shown）It is in During primary importance, roller centrage Y and distance in first axle X vertical 47 for the first axle X are not more than 50mm, that is, Say, do a circle 471 with plane 47 and a diameter of 100mm as the center of circle for the first axle X joining in plane 47, in roller It is tangent or intersect with circle 471 when heart line Y projection is in plane 47.In the present invention, plane 47 is the projection vertical with first axle X Face, parallel with line of cut work surface 46, that is, working face 46 is vertical with first axle X.Roller 50 in present embodiment includes The wheel of a pair of parallel setting, is connected by roller shaft 58 between two wheels, and the centrage of roller shaft 58 is roller center , that is to say, that roller centrage Y is overlapped with axle axis, two wheels are around roller centrage Y synchronous rotary for line Y.Above-mentioned enforcement In mode, roller centrage Y is the axis that wheel rotates about.When roller adopts universal wheel, roller centrage refers to Substantially parallel with its supporting surface dummy line that the geometric center of universal wheel is formed in moving process.When grass-mowing machine 1 is held Operation of beating the grass on row horizontal plane, the geometric center of roller 50 falls on roller centrage, projects to and falls in plane 47 in circle 471 Above or in circle 471, when roller number is more than 2, the geometric center of roller equally also should fall on circle 471 or in circle 471, Function of now beating the grass obtains good support, and line of cut will not make it because of the crank of work 400 when beating the grass Hindered by grass in the course of the work and the state of killing occurs.Further, when roller 50 is in primary importance, roller centrage Y is intersected vertically with first axle X, and now the geometric center of roller 50 is overlapped in plane 47 with the center of circle of circle 471, now works 400 center of gravity is the most steady, and line of cut is less prone to the state of killing, grass-mowing machine work efficiency highest in the course of the work most.

With reference to shown in Fig. 4, when roller is in the second position, work 400 is in deburring state, roller centrage Y and the One axis X is parallel, and roller is as deburring support wheel.User can push grass-mowing machine 1 and carry out deburring along corner or roadside.

Roll wheel assembly 500 includes a pair roller 50, rolling wheel support frame 52, and transposer, changes in the embodiment of the present invention Position device includes support shaft 54 and flexible member 56.With reference to shown in Fig. 5, bracing frame 52 has two ends, first end 52a and The second end 52b, two ends all have a connection through hole respectively, and roller shaft 58 passes through connection through hole to coordinate with collar 55 will Roller 50 is parallel to be fixed on bracing frame the second end 52b, and roller 50 is around roller centrage Y rotation work.Support shaft 54 passes through Connection through hole on first end 52a and collar 55 coordinate bracing frame 52 are connected on guard shield 42.When work 400 change work Make state, need to work with support works head by adjusting transposer and make roller 50 change position, in the present embodiment by gram Take the active force of flexible member 56 to move and pivot bracket axis 54 are thus drive bracing frame 52 and roller 50 to change scroll wheel positions, During this, the relative position of support shaft 54, bracing frame 52 and roller 50 is constant, and bracing frame 52 and roller 50 are also to change together Become its relative manipulation bar and work head position, with this adjust scroll wheel positions to meet beat the grass and two kinds of working conditions of deburring to The demand of support wheel.Because bracing frame 52 is also with roller 50 together adjusting position, when roller 50 is in the second position, bracing frame 52 against guard shield 42 side, in order to prevent line of cut work when get to roller 50, bracing frame 52 is in first end 52a and second It is provided with stage portion between the 52b of end.Additionally, the setting of stage portion can make work head no matter under deburring or state of beating the grass, roller Good supporting role can be played, so that the nose heave heart that works is more steady, be conducive to grass-mowing machine efficient operation.

Guard shield 42 is provided with the match connecto connecting with transposer.Preferably, with reference to shown in Fig. 6, guard shield 42 includes edge Cover 42a that first axle X radially extends and enclose face 42b by what cover 42a extended, match connecto located at cover 42a with enclose The junction of face 42b.In the embodiment of the present invention, match connecto is arranged to the locating slot 421 being radially arranged along first axle, reference Shown in Fig. 7, Fig. 8, locating slot 421 includes notch and bottom land, and notch is located at cover 42a and the junction enclosing face 42b, locating slot 421 include the first groove section 421a and the second groove section 421b near notch, the cross section chi of the first groove section 421a near bottom land The very little cross sectional dimensions being more than the second groove section 421b, and it is provided with stage portion between two groove sections.

In the present embodiment, the support shaft 54 in the transposer connecting with match connecto locating slot 421 have support shaft around The axis Z of its rotation, including head end portion 54a1 and terminal part 54b1, and relative set becomes to have the first of varying cross-section size The cross sectional dimensions of shaft part 54a and the second shaft part 54b, the first shaft part 54a are more than the cross sectional dimensions of the second shaft part 54b, and first The cross sectional dimensions of end 54a1 are more than the cross sectional dimensions of the first shaft part 54a.The mobile setting of support shaft 54 relative localization groove, first End 54a1 and the first shaft part 54a extends into locating slot the first groove section 421a, and support shaft the second shaft part 54b is partly into fixed Position groove the first groove section 421a, be partly into locating slot the second groove section 421b and extend locating slot notch make terminal part 54b1 with Bracing frame first end 52a connects, thus bracing frame 52 is mated up with guard shield 42.56 sets of flexible member in transposer On support shaft 54, and it is arranged between support shaft head end portion 54a1 and locating slot stage portion.

When roller 50 is adjusted after good position by transposer with bracing frame 52, need for roller 50 to be locked in corresponding positions Put, for being provided with fixed mechanism between this roll wheel assembly 500 and guard shield 42.Fixed mechanism includes for roller being locked in primary importance or First fixed mechanism of two positions.After regulating scroll wheel positions on demand, it is lockable roller and support with the first fixed mechanism The position of frame, limits bracing frame and roller moves radially and limits bracing frame and roller and rotates around support shaft axis with support shaft.

Preferably, the groove on projection and bracing frame 52 that the first fixed mechanism includes being arranged on guard shield 42, the present invention In embodiment, with reference to shown in Fig. 5 and Fig. 6, the first fixed mechanism includes four projections being arranged on locating slot 421 notch end face Four grooves 520 on 420 and bracing frame first end 52a, projection 420 is evenly arranged along end face circumference respectively with groove 520, After regulating roller 50 position on demand, the position of projection and groove card and i.e. lockable roller 50 and bracing frame 52.This enforcement Example in be arranged between locating slot notch end face and bracing frame first end the first fixed mechanism can exchange, that is, projection located at On bracing frame first end, and groove is arranged on locating slot notch end face, additionally, projection is also not limited to the number of groove Four, such fixed mechanism equally can lock the position of roll wheel assembly.Certainly, the first fixed mechanism is not limited to this enforcement Example, those skilled in the art is also contemplated that the locking to be realized pair roller assembly with other structures, no longer goes to live in the household of one's in-laws on getting married one by one here State.

Preferably, when grass-mowing machine 1 is in vertical deburring state, when roller is in the second position, in order to prevent bracing frame 52 Rock along first axle X-direction in the course of the work, fixed mechanism still further comprises the second fixed mechanism.Second fixed mechanism Including the guide rail on the slide block being arranged on bracing frame 52 and guard shield 42, in the embodiment of the present invention, shown in reference Fig. 5 and Fig. 6, the Two fixed mechanisms include being arranged at slide block 522 near bracing frame 52 stage portion and shroud edge cover face 42a and enclose face 42b handing-over The guide rail 422 at place, when roller 50 is in the second position, slide block 522 and guide rail 422 card and, the second fixed mechanism is consolidated first Determine pair roller and bracing frame on the basis of mechanism to fix further, limit bracing frame 52 and roller 50 and shake along first axle direction Dynamic.The second fixed mechanism being arranged between bracing frame and guard shield in the present embodiment can be exchanged, and that is, slide block is arranged on guard shield, Guide rail is arranged on bracing frame, and roller equally can be locked in the second position by such fixed mechanism.Certainly, the second fixing machine Structure is not limited to the present embodiment, and those skilled in the art is also contemplated that the locking to realize pair roller assembly with other structures, Here no longer repeat one by one.

With reference to shown in Fig. 9, Figure 10, when roller 50 is in primary importance, support shaft 54 is protected in the presence of flexible member 56 Be held in locating slot 421, the projection of the first fixed mechanism 420 and groove 520 are in card and state, by roller securely lock in Primary importance, during work head level is beaten the grass, roller supports in the horizontal plane around roller centrage and guides grass-mowing machine.This When, with reference to shown in Figure 11, the guide rail of the second fixed mechanism and slide block are in disengaged condition.

With reference to Figure 12, Figure 13, when roller 50 is in the second position, support shaft 54 keeps in the presence of flexible member 56 In locating slot 421, projection 420 and the groove 520 of the first fixed mechanism are in card and state, and roller is locked in second Put.In addition, with reference to shown in Figure 14, the guide rail 422 of the second fixed mechanism and slide block 522 are also at card and state, and so work head During vertical deburring, roller can stably support around roller centrage and guide grass-mowing machine.

Roller 50 is switched to the detailed process of the second position with reference to shown in Figure 15 to Figure 21 from primary importance.Hold first and prop up Support shaft 54 is radially pulled by support first end 52a along locating slot 421 notch direction, needs to overcome flexible member during this Active force, flexible member 56 is compacted and one end against locating slot 421 stage portion, the other end is against support shaft head end portion 54a1, is disengaged from card and state with groove 520 by this projection 420, i.e. the first fixed mechanism unblock (with reference to Figure 15 and Figure 16), and Second fixed mechanism keeps roller to be in state during primary importance, that is, be in disengaged condition (with reference to Figure 11)；Then clockwise Runing rest axle 54, bracing frame 52 and roller 50 also with support shaft 54 around support shaft axis z together with rotate, begin during this Need eventually to overcome flexible member active force (with reference to Figure 17 and Figure 18), the second fixed mechanism is also at disengaged condition (reference picture 11)；Rotate 90.Rear roller 50 reaches the second position (with reference to Figure 19), and now the first fixed mechanism and the second fixed mechanism be all still It is in disengaged condition (with reference to Figure 20 and Figure 21；Finally support shaft 54 is pushed along locating slot 421 bottom land direction radial direction, support shaft 54 are held in locating slot 421 in the presence of flexible member 56 again, projection 420 and groove 520 again block and, slide simultaneously Block 522 is also blocked with guide rail 422 and (with reference to Figure 13 and Figure 14), and that is, the first fixed mechanism and the second fixed mechanism are simultaneously by roller 50 It is locked in the second position it is ensured that roller stably supports grass-mowing machine to work.When roller 50 is switched to primary importance from the second position When, said process is reversible, only need to move radially support shaft and rotate counterclockwise support shaft.As can be seen here, only need to move radially Support shaft and runing rest axle, you can quickly, simply change the position of roller.

Preferably, bracing frame 52 is provided with spill operating space in first end 52a, and operating space is provided with anti-slip veins, this sets Put and facilitate user to grip bracing frame to adjust scroll wheel positions.Further, bracing frame 52 is arranged to network, network Setting can not only mitigate main screw lift, and material can be saved, reduce manufacturing cost.

The above embodiments are used for the purpose of allowing skilled artisan understands that the present invention and the preferred embodiment party that provides Formula.The present invention is not limited in above-mentioned specific embodiment.Any those skilled in the art easily full of beard and improvement all at this Within the inventive concept of invention.

Claims (15)

1. a kind of grass-mowing machine, including：

The stick extending longitudinally；

Handle located at described stick one end；

Located at the work head of the described stick other end, described work head includes housing, is arranged at the motor in described housing, by The line of cut that described motor driving rotates around first axle in working face, and it is connected to the guard shield on described housing；Institute State work head to change between state and the vertical deburring state rotating in beating the grass of line of cut horizontal rotation；

It is characterized in that：Described grass-mowing machine is additionally provided with roll wheel assembly, and described roll wheel assembly includes bracing frame, is installed on described support Roller on frame and bracing frame is connected on guard shield and adjusts the transposer supporting rack position, described transposer bag Include support shaft, support shaft is connected with guard shield, and support shaft rotates around own axes, drive bracing frame to rotate so that described The position of support relative manipulation bar can change with the conversion of working condition of work head, so that roller is in primary importance and the Switch between two positions；Described roller has roller centrage, and when roller is in primary importance, described work head is in shape of beating the grass State, described roller centrage is vertical with first axle, and when roller is in the second position, described work head is in deburring state, institute State roller centrage parallel with first axle.

2. grass-mowing machine according to claim 1 it is characterised in that：When described roller is in primary importance, in described roller Heart line and distance in first axle vertical for the first axle are not more than 50mm.

3. grass-mowing machine according to claim 1 and 2 it is characterised in that：When described roller is in primary importance, described roller Centrage is intersected vertically with first axle.

4. grass-mowing machine according to claim 1 it is characterised in that：Support frame as described above has two ends, described transposition dress Put and be connected to first end, described roller is connected to the second end.

5. grass-mowing machine according to claim 4 it is characterised in that：Support frame as described above is between first end and the second end It is provided with stage portion.

6. grass-mowing machine according to claim 4 it is characterised in that：Support frame as described above is network.

7. grass-mowing machine according to claim 4 it is characterised in that：Support frame as described above is provided with spill operation in first end Area, and operating space is provided with anti-slip veins.

8. grass-mowing machine according to claim 1 it is characterised in that：Described guard shield is provided with connecting of connecting with transposer Device.

9. grass-mowing machine according to claim 8 it is characterised in that：Described guard shield includes the cover radially extending along first axle Face and enclose face by what cover extended, described match connecto includes the locating slot being radially arranged along first axle, described locating slot Including notch and bottom land, described notch is located at the junction in described cover and the face of enclosing, and described locating slot includes the near bottom land One groove section and the second groove section near notch, the cross sectional dimensions of the first groove section are more than the second groove section, and the first groove Duan Yu It is provided with stage portion between two groove sections.

10. grass-mowing machine according to claim 9 it is characterised in that：Described transposer includes the movement of relative localization groove and sets The support shaft put and the flexible member being sheathed on support shaft, described support shaft has the axis that support shaft rotates about, and includes Extend into the head end portion of locating slot the first groove section and the terminal part connecting with support frame as described above, described flexible member is arranged at and props up Between frame axle head end portion and locating slot stage portion；When described roller is in primary importance or the second position, described support shaft is in institute It is held in the presence of stating flexible member in locating slot, described roller is in primary importance with second position handoff procedure, described Support shaft overcomes flexible member active force to move to notch so that support shaft rotates around support shaft axis.

11. grass-mowing machines according to claim 1 it is characterised in that：It is provided with fixed mechanism between described roll wheel assembly and guard shield, Described roller is locked in primary importance or the second position by described fixed mechanism.

12. grass-mowing machines according to claim 11 it is characterised in that：Described fixed mechanism includes for roller being locked in first Position or the first fixed mechanism of the second position.

13. grass-mowing machines according to claim 12 it is characterised in that：Described first fixed mechanism includes being arranged at described shield The groove on projection and support frame as described above on cover, when described roller is in primary importance or the second position, described projection with recessed Groove is in card and state, and in primary importance with second position handoff procedure, described projection and groove are in disengagement to described roller State.

14. grass-mowing machines according to claim 12 it is characterised in that：Described fixed mechanism further includes to lock roller The second fixed mechanism in the second position.

15. grass-mowing machines according to claim 14 it is characterised in that：Described second fixed mechanism includes being arranged on described The guide rail on slide block and guard shield on support, when described roller is in the second position, described slide block and guide rail are in card and state.