CN213404193U

CN213404193U - Drive device of mower and sealing structure of drive device

Info

Publication number: CN213404193U
Application number: CN202022408725.8U
Authority: CN
Inventors: 吴贵海
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-06-11
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a drive arrangement of lawn mower and drive arrangement's enclosed construction, including reducing gear box and motor casing to and locate planetary gear set and driving medium in the reducing gear box, the direct connection of motor casing is on the reducing gear box, motor shaft and planetary gear set's sun gear coaxial coupling, and little planet tooth is connected to the driving medium, and the last lower shed department of motor casing's installing port and reducing gear box respectively is equipped with the spacing shutoff of separation piece, and leaves between the separation piece between motor casing and reducing gear box and be used for radiating ventiduct. Compared with the prior art, the utility model has the advantages that the planetary gear set is coaxially connected with the motor shaft, and the relative volume of the reduction box and the motor shell is reduced; each part structure and connection mode are simple, simple to operate.

Description

Drive device of mower and sealing structure of drive device

Technical Field

The utility model relates to a afforestation equipment technical field relates to the lawn mower, especially relates to the drive arrangement of lawn mower and drive arrangement's enclosed construction.

Background

The motor and the working assembly of the existing mower adopt primary/secondary transmission, the transmission assembly is arranged between the motor and the working assembly for transmission connection, the motor and the transmission assembly are not coaxially connected, when all parts of the mower are installed, the structure of the working assembly is more and complicated, the installation is inconvenient, the motor and the working assembly are arranged in a shell for installation, and the shell has larger required volume; the motor of part lawn mower exposes outside, and the motor easily damages.

For example, patent publication CN209185036U provides a handheld mower, in which a mowing motor is fixed on a fixed housing, an output shaft of the mowing motor is connected with a hollow shaft, the mowing motor is exposed to the outside and is easily damaged, and a motor shaft of the mowing motor is not connected with the hollow shaft coaxially, so that the volume required for fixing the housing is large.

The driving device of the mower with the smaller shell size and the coaxial motor driving work and the sealing structure of the driving device are provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a drive arrangement and a drive arrangement's enclosed construction of lawn mower of the coaxial drive work of less and motor of casing volume is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the driving device of the mower is characterized by comprising a reduction gearbox, wherein the reduction gearbox is connected with a connecting rod, a planetary gear set is arranged in the reduction gearbox, a motor shell is directly connected to the reduction gearbox, a motor shaft is coaxially connected with a sun gear of the planetary gear set, a driving part is arranged and connected with a small planetary gear, the driving part is connected with a working assembly and drives the working assembly to rotate, and the rotating center of the working assembly is coaxial with the motor shaft.

Furthermore, an installation part for installing the planetary gear set is arranged in the reduction gearbox, a clamping protrusion and a clamping groove are arranged between the installation part and an inner gear ring of the planetary gear set for limiting, and the clamping protrusion and the clamping groove limit the inner gear ring to rotate at the installation part.

Furthermore, an insertion part for installing the transmission part is arranged in the reduction gearbox, the insertion part is arranged below the installation part, and the installation part is communicated with the insertion part and is vertically communicated with the insertion part.

Furthermore, the caliber of the insertion part is smaller than that of the installation part, and the upper port part of the insertion part limits partial gears of the planetary gear set from falling.

Furthermore, a plurality of supporting rods are arranged on the transmission part, and each supporting rod comprises a first supporting rod for limiting the falling of the sun gear and a second supporting rod for limiting the falling of the asteroid gear.

Furthermore, a circular truncated cone rotationally connected with the asteroid gear is arranged at the end part of the second supporting rod.

The sealing structure of the mower driving device is characterized by comprising any one of the driving devices, a first barrier piece is arranged at the mounting opening of a motor shell, a second barrier piece and a third barrier piece are arranged at the upper opening and the lower opening of a reduction gearbox, a space is arranged between the first barrier piece and the second barrier piece, a ventilation channel used for heat dissipation is formed between the first barrier piece and the second barrier piece, at least two penetrating ventilation openings are formed in the edge of the motor shell or the edge of the reduction gearbox and communicated to the inside of the ventilation channel, and a motor shaft of a motor penetrates through the first barrier piece and the second barrier piece to be directly or indirectly connected to a sun wheel.

Furthermore, the third blocking piece is arranged at the lower opening of the reduction gearbox and fixedly installed, and the third blocking piece limits the transmission piece and all the parts of the planetary gear set to fall off from the lower opening of the reduction gearbox.

Furthermore, the transmission part rotates along with the change of the positions of the plurality of the minor planet gears relative to the axis, a connecting rod is arranged at the center of the lower end of the transmission part, and the connecting rod penetrates through the third blocking part and extends out of the reduction gearbox to be connected with the working assembly.

Furthermore, the end part of the motor shaft is provided with a connecting end, the connecting end is inserted into the sun gear to be connected, and the motor shaft can drive the sun gear to rotate.

Compared with the prior art, the utility model has the advantages that the planetary gear set is coaxially connected with the motor shaft, and the relative volume of the reduction box and the motor shell is reduced; each part structure and connection mode are simple, simple to operate.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention, and further that, unless otherwise indicated, the drawings are only schematic in conceptually illustrating the composition or construction of the objects described and may contain exaggerated displays, and that the drawings are not necessarily drawn to scale.

FIG. 1 is a schematic view of a lawn mower;

FIG. 2 is a partial exploded view of the mower;

FIG. 3 is a partial cross-sectional view of the mower;

FIG. 4 is a cross-sectional view of the reduction gearbox;

FIG. 5 is a schematic structural view of the planetary gear set;

FIG. 6 is a schematic view of the structure of the transmission member.

In the figure: 1. a reduction gearbox 11, an installation part 12 and an insertion part; 2. a motor housing; 3. a drive motor 31, a motor shaft; 4. a first blocking member 41, a partition plate 42, a connecting pipe; 5. a second barrier 51, a through hole; 6. a planetary gear set, 61, a sun gear, 611, a connecting hole, 62, a small planetary gear, 63 and an inner gear ring; 7. a transmission member 71, a first support rod 72, a second support rod 73 and a connecting rod; 8. a third limiting member; 9. a working assembly; 10. a connecting rod.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and those skilled in the art will appreciate that these descriptions are illustrative only, exemplary and should not be construed as limiting the scope of the present invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

The embodiment mainly explains the driving device of the mower with smaller shell volume and coaxial motor driving work and the sealing structure of the driving device, and specifically comprises the following components:

as shown in fig. 1-6, the driving device of the mower and the closed structure of the driving device comprise a reduction gearbox 1 and a motor housing 2 arranged right above the reduction gearbox 1, wherein the motor housing 2 is directly connected to the reduction gearbox 1.

Preferably, the reduction gearbox 1 is connected with one end of a connecting rod 10, and the other end of the connecting rod 10 is fixed with a holding component.

The reduction gearbox 1 is internally provided with a planetary gear set 6, the motor shell 2 is internally provided with a driving motor 3, and a motor shaft 31 of the driving motor 3 is coaxially connected with a sun gear 61 of the planetary gear set 6.

And still be equipped with driving medium 7 in the reducing gear box 1, driving medium 7 is connected with planetary gear set 6's little planetary gear 62, and little planetary gear 62 is located and is rotated on driving medium 7 and connect, and driving medium 7 realizes the rotation of slowing down through planetary gear set 6.

The reduction gearbox 1 is internally provided with an installation part 11 and an insertion part 12, the insertion part 12 is positioned below the installation part 11, and the installation part 11 is communicated with the insertion part 12 and penetrates through the installation part 11 and the insertion part 12 vertically.

The transmission piece 7 is provided with a plurality of support rods, the support rods face upwards and are inserted from the lower part of the reduction gearbox 1, and the transmission piece 7 is inserted into the insertion part 12 for installation.

The lower opening of the insertion part 12 of the reduction gearbox 1 is provided with a third barrier 8, the third barrier 8 is fixed at the lower opening of the reduction gearbox 1, the center of the lower end of the transmission part 7 is provided with a connecting rod 73, the connecting rod 73 penetrates out of the third barrier 8 and is connected with the working assembly 9, and the third barrier 8 and the transmission part 7 are matched to block the lower opening of the reduction gearbox 1.

The working assembly 9 comprises a cutting blade or a mowing cord.

Preferably, the third blocking member 8 can be fixedly connected with the reduction gearbox 1 by means of screws or buckles and the like.

The planetary gear set 6 is placed into the mounting part 11 from the upper part of the reduction gearbox 1, at least one clamping protrusion or clamping groove is arranged between the inner gear ring 63 of the planetary gear set 6 and the mounting part 11 for limiting, and the clamping protrusions are matched with the clamping grooves to limit the inner gear ring 63 to rotate in the mounting part 11.

Preferably, the diameter of the insertion portion 12 is smaller than the diameter of the mounting portion 11, and the upper end opening portion of the insertion portion 12 restricts the inner ring gear 63 from falling out from below the reduction gear case 1.

The supporting rods on the transmission member 7 comprise a plurality of second supporting rods 72, round tables are arranged on the second supporting rods 72, a plurality of small planetary gears 62 in the planetary gear set 6 are sleeved on the round tables of the first supporting rods 71 in a one-to-one mode and are connected in a rotating mode, and the second supporting rods 72 limit the small planetary gears 62 to fall out of the lower portion of the reduction gearbox 1.

A first supporting rod 71 is arranged at the center of the transmission member 7, and the first supporting rod 71 is used for limiting the sun gear 61 from falling.

The upper opening of the installation part 11 of the reduction gearbox 1 is provided with a second blocking part 5, the second blocking part 5 can be fixedly connected with the reduction gearbox 1 in a screw or buckle mode and the like, the second blocking part 5 limits the planetary gear set 6 to be separated from the upper part of the reduction gearbox 1, the center of the second blocking part 5 is provided with a through hole 51, and the size of the through hole 51 is larger than or equal to that of the connecting hole 611 of the sun gear 61.

Motor casing 2 locates 1 top of reducing gear box, and motor casing 2 is through modes such as screw in screw fixed connection reducing gear box 1, and is equipped with first barrier 4 between motor casing 2 and reducing gear box 1, is equipped with baffle 41 on the first barrier 4, and motor casing 2 is fixed with 1 centre gripping baffle 41 of reducing gear box, and baffle 41 restriction driving motor 3 in the motor casing 2 breaks away from motor casing 2, or during operation restriction driving motor 3 shakes in motor casing 2.

The first blocking part 4 is provided with a connecting pipe 42 which is in a T-shaped structure with the partition plate 41, the motor shell 2 and the reduction gearbox 1 clamp the partition plate 41 and are fixed, the connecting pipe 42 of the first blocking part 4 is inserted into the through hole 51 of the second blocking part 5, and the connecting pipe 42 blocks the through hole 51.

Preferably, a space is arranged between the partition plate 41 of the first barrier member 4 and the second barrier member 5, and a ventilation channel for heat dissipation is formed, and at least two penetrating ventilation openings are arranged at the edge of the motor casing 2 or the edge of the reduction gearbox 1 and communicated into the ventilation channel.

The motor shaft 31 of the driving motor 3 passes through the pipe hole of the connecting pipe 42 of the first blocking member 4 and the through hole 51 of the second blocking member 5, the end part of the motor shaft 31 is directly or indirectly inserted into the connecting hole 611 of the sun gear 61, and the end part of the motor shaft 31 is provided with a connecting end which is matched with the connecting hole 611 of the sun gear 61, when the driving motor 3 works, the motor shaft 31 can drive the sun gear 61 to rotate.

The connecting end is processed by axial tangent plane or is fixed with a spline.

Preferably, the motor shaft 31 of the driving motor 3 is coaxial with the axis of the sun gear 61 of the planetary gear set 6, and the rotation center of the working assembly 9 is coaxial with the motor shaft 31 when the mower is operated.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The above is to the utility model provides a drive arrangement and drive arrangement's of lawn mower enclosed construction has carried out detailed introduction, and it is right that this paper has used specific individual example the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping to understand the utility model discloses and core thought, should point out, to the ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle can also be right the utility model discloses a plurality of improvements and embellishments can be carried out, these improvements and embellishments also fall into the scope of protection of the utility model claims.

Claims

1. The driving device of the mower is characterized by comprising a reduction gearbox, wherein the reduction gearbox is connected with a connecting rod, a planetary gear set is arranged in the reduction gearbox, a motor shell is directly connected to the reduction gearbox, a motor shaft is coaxially connected with a sun gear of the planetary gear set, a driving part is arranged and connected with a small planetary gear, the driving part is connected with a working assembly and drives the working assembly to rotate, and the rotating center of the working assembly is coaxial with the motor shaft.

2. The driving device of the mower according to claim 1, wherein the reduction gearbox is provided with a mounting part for mounting the planetary gear set, a clamping protrusion and a clamping groove limiting part are arranged between the mounting part and an inner gear ring of the planetary gear set, and the clamping protrusion and the clamping groove limit the inner gear ring to rotate at the mounting part.

3. The driving device of the mower according to claim 2, wherein the reduction gear box is provided with an insertion portion for mounting the driving member, the insertion portion is provided below the mounting portion, and the mounting portion communicates with the insertion portion and extends vertically therethrough.

4. The drive device of a lawnmower according to claim 3, wherein the aperture of the insertion portion is smaller than the aperture of the mounting portion, and the upper end opening portion of the insertion portion restricts a part of the gears of the planetary gear set from falling.

5. The driving device of the mower according to claim 1, wherein the driving member is provided with a plurality of support rods, and the support rods comprise a first support rod for limiting the falling of the sun gear and a second support rod for limiting the falling of the pinion gear.

6. The mower drive of claim 5, wherein said second support rod end is provided with a truncated cone rotationally coupled to said asteroid gear.

7. A closed structure of a mower driving device is characterized by comprising the driving device as claimed in any one of claims 1 to 6, wherein a first barrier piece is arranged at a mounting opening of a motor shell, a second barrier piece and a third barrier piece are arranged at upper and lower openings of a reduction gearbox, a space is arranged between the first barrier piece and the second barrier piece to form a ventilation duct for heat dissipation, at least two penetrating ventilation openings are formed in the edge of the motor shell or the edge of the reduction gearbox and communicated into the ventilation duct, and a motor shaft of a motor passes through the first barrier piece and the second barrier piece and is directly or indirectly connected to a sun wheel.

8. The sealing structure of the mower driving device according to claim 7, wherein the third blocking member is fixedly installed at the lower opening of the reduction gearbox, and the third blocking member restricts the transmission member and each component of the planetary gear set from falling off from the lower opening of the reduction gearbox.

9. A closed structure of a driving device of a grass cutter as claimed in claim 7, characterized in that the driving member rotates with the position of the plurality of the minor planet gears relative to the axis, a connecting rod is provided at the center of the lower end of the driving member, and the connecting rod passes through the third blocking member and extends out of the reduction box to be connected with the working assembly.

10. The enclosed structure of the mower driving device as claimed in claim 7, wherein said motor shaft has a connecting end at an end thereof, said connecting end is inserted into the sun gear for connection, and said motor shaft is capable of rotating said sun gear.