Lawn mower
Technical field
The utility model relates to a kind of trimmer, is specifically related to a kind of lawn mower.
Background technology
At present, along with the raising of domestic people's living standard, people require more and more higher to the greening level of living environment, and especially the villa with garden constantly increases, and needs a kind of applicable small size meadow, muting hand-push lawn-trimming machine.But existing lawn mower uses the drivings such as electromotor, diesel engine conventionally, and this lawn mower volume is large, noise is large, is more suitable for spacious large area lawn.And existing lawn mower push rod adopts locking nut to be rotated locking conventionally, this lock mechanism operative is more loaded down with trivial details time-consuming, and after locking, push rod can not regulate in short transverse again simultaneously, is not easy to operator and uses.
Utility model content
The utility model object is to provide a kind of convenient and practical lawn mower, not only simple in structure, volume is little, and noiselessness, pollution-free.
To achieve these goals, the utility model adopts following scheme:
A lawn mower, comprises running gear, gear speed increasing mechanism, shear and cutting-height adjusting device; Shear comprises cutter shaft, along the axial arranged a plurality of knife rests of cutter shaft, be arranged on bed plate and a plurality of hobboing cutter being evenly distributed on knife rest on knife rest, hobboing cutter is spiral camber; Internal gear is installed in front-wheel, and internal gear connects cutter shaft by gear speed increasing mechanism, to drive shear rotation to advance.
In above-mentioned lawn mower, running gear comprises two front-wheels being arranged on front axle, be arranged on two trailing wheels on hind axle with for being connected the support of front-wheel and trailing wheel.
In above-mentioned lawn mower, it also comprises actuating unit, actuating unit comprises electric machine support, motor and accumulator, electric machine support is arranged in the front-wheel that internal gear is not installed, electric machine support is connected with front axle, motor and accumulator are arranged on electric machine support, and the main shaft of motor is connected with cutter shaft by the first shaft coupling, and accumulator is electrically connected to motor.
In above-mentioned lawn mower, gear speed increasing mechanism comprises the first gear, the second gear, the 3rd gear and the 4th gear; In front-wheel, be provided with the first axle body parallel with front axle, the second axle body and three-axis body; The first gear is arranged on the first axle body and with internal gear and is meshed; The second gear and the 3rd gear are coaxially arranged on the second axle body, the second gear and the engagement of the first gear; The 4th gear is arranged on three-axis body, and the 4th gear and the engagement of the 3rd gear; Three-axis body is connected with cutter shaft by the second shaft coupling, and the first axle body is all connected with the baffle plate that is arranged on front-wheel both sides by bearing and bearing block with the second axle body two ends.
In above-mentioned lawn mower, cutting-height adjusting device comprises adjusting height piece and bolt and nut component, regulate height piece to be provided with a plurality of installing holes and an axis hole, hind axle is connected with regulating height piece through axis hole, bolt and nut component comprises bolt and nut bolt, bolt through through hole on one of them installing hole and support by fastening nuts.
In above-mentioned lawn mower, it also comprises for adjusting bed plate with respect to the lash adjusting device of hobboing cutter position, and lash adjusting device comprises that gap adjusts bolt and fixed head, and fixed head is connected with support, and gap is adjusted bolt and passed fixed head and contact with knife rest.
In above-mentioned lawn mower, the 3rd gear is the gear with freewheel clutch.
In above-mentioned lawn mower, on hind axle, be connected with handle.
The beneficial effects of the utility model: simple in structure, volume is little, noiselessness, pollution-free.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model schematic side view.
Fig. 3 is the utility model shear structural representation.
Fig. 4 is the utility model bed plate structural representation.
Fig. 5 is actuating unit structural representation.
In figure 1, front hub, 2, the first gear, 3, front tyre, 4, the first axle body, 5, the 3rd gear, 6, baffle plate, 7, support, 8, cutter shaft, 9, motor, 10, electric machine support, 11, the first shaft coupling, 12, trailing wheel, 13, bed plate, 14, hind axle, 15, bolt is adjusted in gap, 16, regulate height piece, 17, bolt and nut component, 18, the second shaft coupling, 19, internal gear, 20, three-axis body, 21, front axle, 22, the second axle body, 23, the second gear, 24, handle, 25, hobboing cutter, 26, knife rest, 27, installing hole, 28, axis hole, 29, accumulator.
Embodiment
For the ease of those skilled in the art, better understand the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further details, following is only the exemplary protection domain of the present utility model that do not limit.
A lawn mower, comprises running gear, gear speed increasing mechanism, shear and cutting-height adjusting device; Running gear comprises two front-wheels being arranged on front axle 21, be arranged on two trailing wheels 12 on hind axle 14 with for being connected the support 7 of front-wheel and trailing wheel 12, front-wheel comprises front hub 1, front tyre 3 and is arranged on the baffle plate 6 of front hub 1 both sides; Shear comprises cutter shaft 8, along the axial arranged a plurality of knife rests 26 of cutter shaft 8, be arranged on bed plate 13 and a plurality of hobboing cutter 25 being evenly distributed on knife rest 26 on knife rest 26, hobboing cutter 25 is spiral camber; Internal gear 19 is installed in front-wheel, and internal gear 19 connects cutter shaft 8 by gear speed increasing mechanism, to drive shear rotation to advance; Cutting-height adjusting device comprises adjusting height piece 16 and bolt and nut component 17, regulate height piece 16 to be provided with a plurality of installing holes 27 and an axis hole 28, hind axle 14 is connected with regulating height piece 16 through axis hole 28, bolt and nut component 17 comprises bolt and nut bolt, bolt through through hole on one of them installing hole 27 and support 7 by fastening nuts.
Consider that to cut careless labour intensity larger, operator's physical efficiency be there are certain requirements, in the present embodiment, also comprise actuating unit, actuating unit comprises electric machine support 10, motor 9 and accumulator 29, electric machine support 10 is arranged in the front-wheel that internal gear 19 is not installed, and electric machine support 10 is connected with front axle 21, and motor 9 and accumulator 29 are arranged on electric machine support 10, the main shaft of motor 9 is connected with cutter shaft 8 by the first shaft coupling 11, and accumulator 29 is electrically connected to motor 9.When the inapplicable front-wheel of operator rolls to drive hobboing cutter 25, connect after accumulator 29, hobboing cutter 25 just can utilize motor 9 to drive.
Gear speed increasing mechanism comprises the first gear 2, the second gear 23, the 3rd gear 5 and the 4th gear; In front-wheel, be provided with the first axle body parallel with front axle 21 4, the second axle body 22 and three-axis body 20; The first gear 2 is arranged on the first axle body 4 and with internal gear 19 and is meshed; The second gear 23 and the 3rd gear 5 are coaxially arranged on the second axle body 22, the second gear 23 and the first gear 2 engagements; The 4th gear is arranged on three-axis body 20, and the 4th gear and the 3rd gear 5 engagements; Three-axis body 20 is connected with cutter shaft 8 by the second shaft coupling 18, and the first axle body 4 is all connected with the baffle plate 6 that is arranged on front-wheel both sides by bearing and bearing block with the second axle body 22 two ends.The 3rd gear 5 is the gear with freewheel clutch, because the 3rd gear 5 rotating speeds are greater than the rotating speed of the cutter shaft 8 being attached thereto, do and surmount motion like this under freewheel clutch effect with respect to cutter shaft 8, and the rotation that front-wheel passes to cutter shaft 8 can not interfere.
In the present embodiment, also comprise for adjusting bed plate 13 with respect to the lash adjusting device of hobboing cutter 25 positions, lash adjusting device comprises gap adjustment bolt 15 and fixed head, and fixed head is connected with support 7, and gap is adjusted bolt 15 and contacted with knife rest 26 through fixed head.
For easy to operate, on hind axle 14, be connected with handle 24.
The utility model operation principle is as follows: front-wheel, trailing wheel are equipped with in bottom, can arbitrarily move.While cutting grass, hand steered handle 24 promotes forward lawn mower, and two front-wheels in front roll forward along ground.In front-wheel, stud with internal gear 19, internal gear 19, by three grades of speed booster driving mechanisms, is passed to cutter shaft 8 by the rotation of front-wheel, thereby drives hobboing cutter 25 to rotate forward.Hobboing cutter 25 forms a pair of scissors with the tangent effect of bed plate 13, by by hobboing cutter 25, pulled to grass stubble cut off, the grass of cutting off will be brought into collection straw bag along hobboing cutter 25 direction of rotation, or very short because of grass bits, be kept somewhere in lawn, become fertilizer.When operator does not roll to drive hobboing cutter with front-wheel, accumulator 29 can be connected, hobboing cutter 25 is just driven by motor 9.The 3rd gear 5 with freewheel clutch is given in the rotation anti-pass of hobboing cutter 36, because the rotating speed of the 3rd gear 5 is greater than the rotating speed of the cutter shaft 8 connecting with it, under freewheel clutch effect, the 3rd gear 5 is done relative cutter shaft 8 to surmount motion like this, and is not interfered by the rotation that front-wheel is passed to cutter shaft 8.
Below only described basic principle of the present utility model and preferred embodiment, those skilled in the art can make many changes and improvements according to foregoing description, and these changes and improvements should belong to protection domain of the present utility model.