CN213094949U

CN213094949U - Lawn mower cutting structure and lawn mower

Info

Publication number: CN213094949U
Application number: CN202021191437.5U
Authority: CN
Inventors: 陈双庆
Original assignee: Ningbo Ruilin Machinery Technology Co ltd
Current assignee: Ningbo Ruilin Machinery Technology Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-05-04
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to a lawn mower cutting structure and lawn mower relates to cutting device's field, and it includes the casing, is fixed in driving motor on the casing and the rotating blade who is connected with driving motor, still including locating the increase square subassembly in the casing, increase square subassembly including rotate in the connection casing and along with driving motor's output shaft pivoted pinion, rotate connect in the casing and with pinion intermeshing's gear wheel and wear to locate on the casing and along with gear wheel pivoted drive shaft, the casing is stretched out to the one end of drive shaft, rotating blade fixed connection stretches out the one end of casing in the drive shaft. This application has increased driving motor's output torque to in cutting harder objects such as branch, make driving motor be difficult for appearing the stifled commentaries on classics, improved driving motor's life's effect.

Description

Lawn mower cutting structure and lawn mower

Technical Field

The application relates to the field of cutting devices, in particular to a mower cutting structure and a mower.

Background

With the continuous development of the electric tool technology, the mower is also widely applied, and is mainly applied to garden decoration trimming, lawn greening trimming, urban streets, greening scenic spots, garden trimming and field weeding, particularly to grasslands, football fields and other grassland fields in parks.

Chinese patent with application number 201721375835.0 discloses a lawn mower, including removing seat and fixed connection in the installation casing that removes seat one side, be provided with spinning blade and drive in the installation casing spinning blade pivoted driving motor, it has the slip frame to slide along vertical direction in the installation casing, the spinning blade rotates to be connected in the slip frame downside, be provided with the drive arrangement who is used for driving the slip frame to slide from top to bottom on the installation casing, installation casing lateral wall is provided with the hole of sliding along vertical direction, outwards extend on the slip frame and have the driven lever of wearing out the hole of sliding, drive arrangement connects in installation casing outer wall and supports the eccentric cam who presses in the driven lever upside and be used for driving eccentric cam pivoted sliding motor including rotating.

In view of the above-mentioned related technologies, the inventor thinks that there is a defect that the output shaft of the driving motor is directly and fixedly connected with the rotary blade to provide power for the rotary blade, and the torque is small, so that the rotary blade is difficult to cut hard objects such as branches, and the service life of the driving motor is affected.

SUMMERY OF THE UTILITY MODEL

To increase torque of a mower, the present application provides a mower cutting structure.

The application provides a lawn mower cutting structure adopts following technical scheme:

the utility model provides a lawn mower cutting structure, includes the casing, is fixed in driving motor on the casing and the rotating blade who is connected with driving motor, still including locating the increase square subassembly in the casing, increase square subassembly including rotate connect in the casing and along with driving motor's output shaft pivoted pinion, rotate connect in the casing and with pinion intermeshing's gear wheel and wear to locate on the casing and along with gear wheel pivoted drive shaft, the casing is stretched out to the one end of drive shaft, rotating blade fixed connection stretches out the one end of casing in the drive shaft.

Through adopting above-mentioned technical scheme, driving motor's output shaft and pinion connection order about pinion rotation, and pinion and gear wheel intermeshing order about gearwheel rotation, and the gear wheel drives the drive shaft and rotates, and the drive shaft drives and rotates the blade rotation, has increased driving motor's output moment of torsion to in cutting harder objects such as branch, make driving motor be difficult for appearing the lock-rotor, improved driving motor's life.

Preferably, the bull gear and the pinion are both bevel gears.

Through adopting above-mentioned technical scheme, helical gear is for the spur gear, and the transmission is more steady, and impact, vibration and noise are less.

Preferably, the cutter head is sleeved at one end, extending out of the shell, of the driving shaft, an insertion groove for the insertion of the driving shaft is formed in the cutter head, and the rotating blade is fixed at one side, far away from the driving shaft, of the cutter head.

Through adopting above-mentioned technical scheme, the drive shaft can be dismantled with the blade disc through pegging graft and be connected, when rotating the blade and taking place to damage, conveniently carries out the dismouting change to rotating the blade, has improved the dismouting change efficiency that rotates the blade.

Preferably, one side of the cutter disc, which is far away from the driving shaft, is provided with at least one driving protrusion, the rotating blade is provided with an insertion hole for the insertion of the driving protrusion, and the insertion hole is matched with the driving protrusion.

By adopting the technical scheme, the arrangement of the driving protrusions enables the cutter head to drive the rotating blades to rotate, the rotating blades and the cutter head are not prone to relative rotation, and the synchronism of the rotating blades and the cutter head is improved.

Preferably, the outer side wall of the driving protrusion is provided with a driving surface, and the driving surface is arranged on one side of the driving protrusion close to the cutting surface of the rotating blade.

By adopting the technical scheme, the driving surface is perpendicular to the rotating direction of the rotating blade, and when the cutter head drives the rotating blade to rotate, the force is conveniently applied to the rotating blade through the driving surface so as to drive the rotating blade to rotate.

Preferably, the number of the driving protrusions is two, and the two driving protrusions are arranged in central symmetry with respect to the axis of the driving shaft.

Through adopting above-mentioned technical scheme, two drive archs are protruding for a drive, can apply for the drive power that rotates the blade bigger, and two drive archs have shared a bellied drive power of drive simultaneously for the drive is protruding difficult for taking place to damage, has improved the bellied life of drive.

Preferably, the outer side wall of the driving shaft close to the cutter head is provided with a flat groove, and the insertion groove is matched with the driving shaft.

By adopting the technical scheme, the arrangement of the flat grooves enables the cutter head and the driving shaft to be difficult to rotate relatively, and the synchronism of the driving shaft and the cutter head is improved.

Preferably, the rotating blade includes a fixing portion fixed to the driving shaft, a bending portion fixed to both ends of the fixing portion, and a cutting portion fixed to a side of the bending portion away from the fixing portion.

Through adopting above-mentioned technical scheme, the setting of kink has increased the structural strength who rotates the blade, makes to rotate the difficult emergence of blade and damages when using, has improved the life who rotates the blade.

Preferably, a cutting blade is fixed on the cutting surface of the rotating blade, and the cutting blade and the rotating blade are arranged in a crossed manner.

Through adopting above-mentioned technical scheme, the cutting piece is alternately set up with the rotating blade for when rotating the blade and rotating, the cutting piece slope is cut, has reduced the resistance when rotating the blade cutting, has improved the cutting ability who rotates the blade.

In order to increase the torque of the mower, the application also provides the mower.

The application provides a lawn mower adopts following technical scheme:

a mower comprises a machine body and wheels, and further comprises the mower cutting structure.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the output torque of the driving motor is increased, so that hard objects such as branches and the like can be cut conveniently, the driving motor is not easy to block, and the service life of the driving motor is prolonged;

2. when the rotating blade is damaged, the rotating blade is convenient to disassemble, assemble and replace, and the disassembling, assembling and replacing efficiency of the rotating blade is improved.

Drawings

Fig. 1 is a schematic view of a mechanism of a lawnmower according to an embodiment of the present application.

Fig. 2 is an exploded view schematically illustrating a cutting structure of a lawn mower according to an embodiment of the present disclosure.

Fig. 3 is an exploded schematic view of a cutting structure of a lawn mower according to an embodiment of the present disclosure.

Fig. 4 is an exploded view of the drive shaft and cutter head, rotating blades, and bolts according to the embodiment of the present application.

Fig. 5 is an exploded view of the drive shaft, cutter head, rotary blade, and bolt according to the embodiment of the present application.

Description of reference numerals: 1. cutting the structure; 11. a housing; 111. an upper housing; 112. a lower housing; 12. a drive motor; 13. rotating the blade; 131. an insertion hole; 132. a fixed part; 133. a bending section; 134. a cutting section; 135. cutting the slices; 14. a moment-increasing component; 141. a pinion gear; 142. a bull gear; 143. a drive shaft; 1431. a flat groove; 15. a cutter head; 151. inserting grooves; 152. a drive boss; 1521. a drive face; 16. a bolt; 2. a mower; 21. a body; 22. and (4) wheels.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a mower. Referring to fig. 1, a lawn mower 2 includes a body 21, wheels 22 installed at both sides of the body 21 to facilitate movement of the body 21 on the ground, and a cutting structure 1 installed at a lower side of the body 21, the cutting structure 1 for cutting weeds.

Referring to fig. 2 and 3, a cutting structure of a mower includes a housing 11, a driving motor 12, a moment-increasing assembly 14 and a rotary blade 13, wherein the housing 11 includes an upper housing 111 and a lower housing 112, the lower housing 112 is fixed on the upper housing 111 by screws, and the moment-increasing assembly 14 is installed in a space formed by the upper housing 111 and the lower housing 112; the moment increasing assembly 14 includes a large gear 142, a small gear 141 and a driving shaft 143, the driving motor 12 is fixed on the upper side of the upper housing 111, the output shaft of the driving motor 12 extends into the space formed by the upper housing 111 and the lower housing 112, the small gear 141 is sleeved on the output shaft of the driving motor 12, the output shaft of the driving motor 12 is connected with the small gear 141 in a key manner to drive the small gear 141 to rotate, the large gear 142 is rotatably connected in the space formed by the upper housing 111 and the lower housing 112, the large gear 142 is engaged with the small gear 141, the large gear 142 and the small gear 141 can be straight gears or helical gears, the large gear 142 and the small gear 141 are preferably helical gears, the driving shaft 143 is inserted on the large gear 142 and connected with the large gear 142 in a key manner to rotate along with the large gear 142, the driving shaft 143 is rotatably connected in the housing 11 through a bearing, the lower, to drive the rotating blade 13 to rotate.

Referring to fig. 4 and 5, the rotary blade 13 may be directly fixed to the lower end of the driving shaft 143, or may be indirectly fixed to the lower end of the driving shaft 143, where the rotary blade 13 is preferably indirectly fixed to the lower end of the driving shaft 143, the cutter head 15 is sleeved on the lower end of the driving shaft 143, an insertion groove 151 is formed in the cutter head 15, and the lower end of the driving shaft 143 is inserted into the insertion groove 151, so that the cutter head 15 is mounted on the lower end of the driving shaft 143; at least one flat groove 1431 is formed in the outer side wall of the lower end of the driving shaft 143, the number of the flat grooves 1431 is two, the flat grooves are uniformly arranged along the circumferential direction of the driving shaft 143, and the insertion groove 151 is matched with the lower end of the driving shaft 143, so that the synchronism of the cutter head 15 and the driving shaft 143 is improved.

The rotating blade 13 comprises a fixing portion 132, two bending portions 133 and two cutting portions 134, the fixing portion 132 is fixed on the lower end face of the driving shaft 143 through a bolt 16, the number of the bending portions 133 is two, the two bending portions 133 are respectively integrally arranged at two ends of the fixing portion 132, the cutting portions 134 are in one-to-one correspondence with the bending portions 133, the cutting portions 134 are integrally arranged at one ends, far away from the fixing portion 132, of the bending portions 133, cutting pieces 135 are further integrally arranged on a cutting surface of the cutting portion 134, the two cutting pieces 135 are arranged in central symmetry along the axis of the driving shaft 143, and the cutting pieces 135 and the cutting portions 134 are arranged in a crossed manner, so that the cutting pieces 135 can be cut obliquely; one side of the cutter disc 15 away from the driving shaft 143 is integrally provided with at least one driving protrusion 152, the number of the driving protrusions 152 is two, the two driving protrusions 152 are arranged in a centrosymmetric manner along the axis of the driving shaft 143, the fixing portion 132 is provided with an insertion hole 131, and the insertion hole 131 is used for the insertion of the driving protrusions 152, so that when the cutter disc 15 drives the rotating blade 13 to rotate, the rotating blade 13 is not easy to rotate relative to the cutter disc 15.

The driving protrusion 152 is in an arc-shaped column shape, a driving surface 1521 is arranged on the outer side wall of the driving protrusion 152, the driving surface 1521 is arranged on one side, close to the cutting surface of the rotating blade 13, of the driving protrusion 152, and the insertion hole 131 is matched with the driving protrusion 152, so that the force application effect of the driving protrusion 152 on the rotating blade 13 is improved.

The implementation principle of the cutting structure 1 of the mower 2 in the embodiment of the application is as follows: the output shaft of driving motor 12 is connected with pinion 141 in order to order about pinion 141 and rotate, pinion 141 and gear wheel 142 intermeshing are in order to order about gear wheel 142 and rotate, and gear wheel 142 drives drive shaft 143 and rotates, and drive shaft 143 drives and rotates blade 13 and rotate, has increased driving motor 12's output moment of torsion to cut harder objects such as branch, make driving motor 12 difficult the appearance stall, improved driving motor 12's life.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a lawn mower cutting structure, includes casing (11), is fixed in driving motor (12) on casing (11) and rotates blade (13) be connected with driving motor (12), its characterized in that: still including locating increase square subassembly (14) in casing (11), increase square subassembly (14) including rotate connect in casing (11) and along with output shaft pivoted pinion (141) of driving motor (12), rotate connect in casing (11) and with pinion (141) intermeshing's gear wheel (142) and wear to locate on casing (11) and along with gear wheel (142) pivoted drive shaft (143), casing (11) are stretched out to the one end of drive shaft (143), rotating blade (13) fixed connection stretches out the one end of casing (11) in drive shaft (143).

2. A mower cutting structure as claimed in claim 1 wherein: the large gear (142) and the small gear (141) are both helical gears.

3. A mower cutting structure as claimed in claim 1 wherein: the cutter head (15) is sleeved at one end, extending out of the shell (11), of the driving shaft (143), an inserting groove (151) for inserting the driving shaft (143) is formed in the cutter head (15), and the rotating blade (13) is fixed on one side, far away from the driving shaft (143), of the cutter head (15).

4. A mower cutting structure as claimed in claim 3 wherein: one side that drive shaft (143) was kept away from in blade disc (15) is equipped with at least one drive arch (152), be equipped with on rotation blade (13) and supply drive arch (152) male patchhole (131), patchhole (131) with drive arch (152) looks adaptation.

5. A mower cutting structure as claimed in claim 4 wherein: the outer side wall of the driving protrusion (152) is provided with a driving surface (1521), and the driving surface (1521) is arranged on one side, close to the cutting surface of the rotating blade (13), of the driving protrusion (152).

6. A mower cutting structure as claimed in claim 4 wherein: the number of the driving protrusions (152) is two, and the two driving protrusions (152) are arranged in a central symmetry mode around the axis of the driving shaft (143).

7. A mower cutting structure as claimed in claim 3 wherein: the outer side wall of the driving shaft (143) close to the cutter head (15) is provided with a flat groove (1431), and the insertion groove (151) is matched with the driving shaft (143).

8. A mower cutting structure as claimed in claim 1 wherein: the rotating blade (13) comprises a fixing part (132) fixed with the driving shaft (143), bending parts (133) fixed at two ends of the fixing part (132) and cutting parts (134) fixed at one side of the bending parts (133) far away from the fixing part (132).

9. A mower cutting structure as claimed in claim 1 or 8 wherein: a cutting blade (135) is fixed on the cutting surface of the rotating blade (13), and the cutting blade (135) and the rotating blade (13) are arranged in a crossed manner.

10. A mower comprising a body (21) and wheels (22), characterized in that: further comprising a lawn mower cutting structure (1) as claimed in any one of claims 1-9.