CN218277846U

CN218277846U - Grass winding prevention machine head structure on mower

Info

Publication number: CN218277846U
Application number: CN202222961391.6U
Authority: CN
Inventors: 卢静南
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-01-13
Anticipated expiration: 2032-11-08

Abstract

The utility model discloses an anti-wind grass aircraft nose structure on lawn mower, including the aircraft nose main part, the inside of aircraft nose main part be provided with driving motor and with the transmission shaft that driving motor directly or indirectly connects, the one end of transmission shaft is located in the aircraft nose main part, the other end is located outside the aircraft nose main part, be located outside the aircraft nose main part be provided with the saw bit on the transmission shaft, the saw bit with between the aircraft nose main part be provided with on the transmission shaft and prevent around the grass device. The utility model discloses, under the circumstances that keeps preventing weeds to twine on the output shaft from taking place, its reasonable in design, simple structure has reduced the degree of difficulty of manufacturing, is favorable to reducing the cost of manufacturing, the maintenance in the later stage of also being convenient for.

Description

Grass winding prevention machine head structure on mower

Technical Field

The utility model relates to a lawn mower technical field especially relates to an anti-wind grass aircraft nose structure on lawn mower.

Background

A known mower is a garden equipment for cutting grass and shrubs, and has a main structure including a head provided with a front end and a handle provided with a rear end, which are connected by an extension pole, thereby allowing a user to cut grass without squatting. Most lawn mowers on the market can set up driving motor in the aircraft nose, and driving motor connects the transmission shaft to adorn the saw bit on the transmission shaft, driving motor rotates and drives the epaxial saw bit rotation of transmission, thereby accomplishes the effect of pruning meadow and little bush. If the chinese utility model patent of grant bulletin number CN217591556U discloses a aircraft nose structure of lawn mower, be located and be provided with saw bit installation device on the transmission shaft outside the aircraft nose main part, saw bit installation device is including setting up clamping part and the fixed part on the transmission shaft, and the saw bit is installed between clamping part and fixed part, the epaxial middle part shaping of transmission has synchronous key, the outer tip of transmission shaft has seted up the screw thread, the clamping part is connected with the epaxial synchronous key of transmission, the fixed part sets up on the screw thread of transmission shaft, and the transmission shaft rotation can drive clamping part and fixed part synchronous rotation, still the cover is equipped with on the transmission shaft and supports the portion, support the portion and be connected with the clamping part, support the outline of portion and be greater than the outline of clamping part, can be more convenient when dismantling or installing the saw bit through the clamping part, need not to use extra instrument earlier to fix the clamping part, only need to grasp support the portion with the hand and can restrict the transmission shaft and follow the rotation.

However, when the mower is used, the weeds and the leaves of the crops are extremely high in toughness, so that the weeds and the leaves of the crops are extremely easy to wind on a rotating shaft of the mower during operation, the working efficiency of the mower is low, even the mower equipment is damaged in serious cases, the smooth development of work is seriously influenced, meanwhile, the difficulty in cleaning the weeds and the like wound on the mower is also extremely high, the difficulty in repairing the mower is increased, the smooth development of production is not facilitated, and the cutter is not easy to detach when damaged, so that the maintenance is difficult.

Although also having the chinese utility model patent of authorizing the publication number for CN210202513U, disclose an agricultural machinery and prevent pressing from both sides grass device, movable mounting has the protection tube on the knife rest, utilizes the protection tube to protect motor output shaft, prevents that weeds from twining on the output shaft, but it still needs can dismantle connecting device, and this kind of structure is comparatively complicated, is unfavorable for manufacturing, has increaseed manufacturing cost's input, also does not benefit to the maintenance in later stage simultaneously.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an anti-wind grass aircraft nose structure on lawn mower, under the circumstances that keeps preventing weeds to twine the epaxial condition emergence of output, its reasonable in design, simple structure has reduced the degree of difficulty of manufacturing, is favorable to reducing the cost of manufacturing, the maintenance in the later stage of also being convenient for.

(II) technical problems to be solved

In order to realize the purpose, the utility model discloses the technical scheme who takes is:

the utility model provides an anti-winding grass aircraft nose structure on lawn mower, includes the aircraft nose main part, the inside of aircraft nose main part be provided with driving motor and with the transmission shaft that driving motor directly or indirectly connected, the one end of transmission shaft is located in the aircraft nose main part, the other end is located outside the aircraft nose main part, be located outside the aircraft nose main part be provided with the saw bit on the transmission shaft, the saw bit with be provided with the anti-winding grass device on the transmission shaft between the aircraft nose main part.

Preferably, the grass winding prevention device comprises an installation position arranged on the machine head main body, a cover plate covers the installation position, and a through hole for the transmission shaft to penetrate through is formed in the cover plate.

Preferably, the cover plate at the perforation position is provided with a mounting seat, the mounting seat and the cover plate form a mounting groove, the mounting seat and the cover plate are integrally formed, and a protective sleeve capable of rotating along with the transmission shaft is arranged in the mounting groove.

Preferably, the upper end horizontal plane of protective sheath is a little higher than mount pad up end horizontal plane, install on the outer transmission shaft of protective sheath the saw bit, the saw bit with protective sheath terminal surface in close contact with.

Preferably, the transmission shaft penetrates through the saw blade and is provided with a fixing sleeve.

Preferably, a speed reducing mechanism is arranged in the machine head main body and comprises a pinion arranged on a motor shaft of the driving motor, a gear wheel meshed with the pinion is arranged on the side edge of the pinion, and the gear wheel is connected with the transmission shaft.

(III) technical effects to be achieved

Compared with the prior art, the beneficial effects of the utility model are that:

one of them, the utility model discloses be provided with on the transmission shaft between saw bit and the aircraft nose main part and prevent around careless device, this kind has not only kept preventing under the circumstances that weeds twine the epaxial condition of output and take place, simple structure, the production installation of being convenient for.

And secondly, the utility model discloses prevent around grass device is covered with the apron including setting up the installation position in the aircraft nose main part on the installation position, is provided with the perforation that supplies the transmission shaft to run through and cross on the apron, its reasonable in design, simple structure has reduced the degree of difficulty of manufacturing, is favorable to reducing the cost of manufacturing, the maintenance in the later stage of also being convenient for.

Third, the utility model discloses be provided with the mount pad on the apron of perforation position, the mount pad forms the mounting groove with the apron, and the mount pad is integrated into one piece with the apron, is provided with in the mounting groove and can follow the transmission shaft pivoted protective sheath together, and this kind of setting is the better installation protective sheath, also is favorable to preventing that weeds from twining on the transmission shaft.

Fourth, the utility model discloses the upper end horizontal plane of protective sheath is a little higher than mount pad up end horizontal plane, and this kind of setting also is favorable to the saw bit to the wearing and tearing of mount pad terminal surface at long-term rotation in-process, has prolonged life, installs the saw bit on the outer transmission shaft of protective sheath, saw bit and protective sheath terminal surface in close contact with, and this kind is favorable to preventing that weeds from twining to the transmission shaft on, moves more reliably and steadily.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 isbase:Sub>A sectional view taken alongbase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is the schematic diagram of the main structure of the handpiece of the present invention.

Fig. 4 is an assembly schematic view of the transmission shaft and the grass-winding prevention device of the present invention.

Fig. 5 is an exploded view of the transmission shaft and the grass-winding prevention device of the present invention.

In the figure: 1, a machine head main body; 2, driving a motor; 3, a transmission shaft; 4, a saw blade; 5, a grass winding prevention device; 6, fixing a sleeve; 11, a pinion gear; 12, a gearwheel; 51, a mounting position; 52, a cover plate; 53, perforating; 54, a mounting seat; 55, mounting grooves; and 56, a protective sleeve.

Detailed Description

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to which the description refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: with reference to fig. 1, fig. 2 and fig. 3, a grass winding prevention machine head structure on mower, including aircraft nose main part 1, the inside of aircraft nose main part 1 be provided with driving motor 2 and with driving motor 2 is transmission shaft 3 that directly or indirectly connects, the one end of transmission shaft 3 is located in aircraft nose main part 1, the other end is located outside aircraft nose main part 1, be located outside aircraft nose main part 1 be provided with saw bit 4 on the transmission shaft 3, saw bit 4 with between the aircraft nose main part 1 be provided with grass winding prevention device 5 on the transmission shaft 3, this kind of grass winding prevention device 5 is favorable to preventing that weeds from winding on transmission shaft 3, avoids leading to the problem that mower work efficiency is low and serious even leads to mower equipment to damage, reduces because of the big problem of the big degree of difficulty of clearance such as the weeds on the transmission shaft 3 that twines, is favorable to developing smoothly of production more.

Example two: as shown in fig. 2, 3, 4 and 5, according to the first embodiment, the grass-surrounding prevention device 5 includes a mounting position 51 disposed on the handpiece body 1, the mounting position 51 is covered with a cover plate 52, and the cover plate 52 is provided with a through hole 53 for the transmission shaft 3 to pass through, so that on one hand, the mounting position 51 is better covered for protection, and on the other hand, weeds are wound on the transmission shaft 3 due to the transmission shaft 3 being exposed outside. It is noted that, the cover plate 52 at the position of the through hole 53 is provided with a mounting seat 54, the mounting seat 54 and the cover plate 52 form a mounting groove 55, the mounting seat 54 and the cover plate 52 are integrally formed, and a protective sleeve 56 which can rotate along with the transmission shaft 3 is arranged in the mounting groove 55, so that the protective sleeve 56 is better mounted, and the weeds can be prevented from being wound on the transmission shaft 3. It is also supposed that the upper end horizontal plane of the protection cover 56 is slightly higher than the upper end horizontal plane of the mounting base 54, and since the upper end horizontal plane of the protection cover 56 is slightly higher than the upper end horizontal plane of the mounting base 54, this arrangement is also favorable for the saw blade 4 to wear the end surface of the mounting base 54 in the long-term rotation process, so as to prolong the service life, the saw blade 4 is installed on the transmission shaft 3 outside the protection cover 56, and the saw blade 4 is in close contact with the end surface of the protection cover 56, so as to be favorable for preventing weeds from winding on the transmission shaft 3, and the operation is more reliable and stable.

Example three: as shown in fig. 2, on the basis of the second embodiment, a fixing sleeve 6 is disposed on the transmission shaft 3 penetrating through the saw blade 4, which is beneficial to fixing the saw blade 4 on the transmission shaft 3, and is beneficial to enabling the transmission shaft 3 to drive the saw blade 4 to rotate, thereby achieving the effect of mowing.

Example four: as shown in fig. 2, on the basis of the first embodiment, the second embodiment or the third embodiment, a speed reduction mechanism is arranged in the handpiece main body 1, the speed reduction mechanism includes a pinion 11 arranged on a motor shaft of the driving motor 2, a gearwheel 12 engaged with the pinion 11 is arranged on a side edge of the pinion 11, the gearwheel 12 is connected with the transmission shaft 3, and rotation of the gearwheel 12 can drive the transmission shaft 3 to rotate synchronously.

Standard parts used in the application document can be purchased from the market, the specific connection mode of each part adopts conventional means such as bolts and rivets mature in the prior art, the internal parts of the driving motor adopt conventional models in the prior art, the internal structure of the driving motor belongs to the structure of the prior art, workers can complete normal operation of the driving motor according to a manual of the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that specific description is not given.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims

1. The utility model provides an anti-winding grass aircraft nose structure on lawn mower, includes aircraft nose main part (1), the inside of aircraft nose main part (1) be provided with driving motor (2) and with transmission shaft (3) that driving motor (2) are connected directly or indirectly, the one end of transmission shaft (3) is located in aircraft nose main part (1), the other end is located outside aircraft nose main part (1), be located outside aircraft nose main part (1) be provided with saw bit (4) on transmission shaft (3), its characterized in that: and a grass winding prevention device (5) is arranged on the transmission shaft (3) between the saw blade (4) and the machine head main body (1).

2. The head structure of claim 1, wherein: the grass winding prevention device (5) comprises an installation position (51) arranged on the machine head main body (1), a cover plate (52) covers the installation position (51), and a through hole (53) for the transmission shaft (3) to penetrate through is formed in the cover plate (52).

3. The head structure of claim 2, wherein: the transmission shaft structure is characterized in that a mounting seat (54) is arranged on the cover plate (52) at the position of the through hole (53), a mounting groove (55) is formed by the mounting seat (54) and the cover plate (52), the mounting seat (54) and the cover plate (52) are integrally formed, and a protective sleeve (56) capable of rotating along with the transmission shaft (3) is arranged in the mounting groove (55).

4. A head structure of a grass winding preventing machine for a lawn mower according to claim 3, wherein: the upper end horizontal plane of protective sheath (56) is a little higher than mount pad (54) up end horizontal plane, install on transmission shaft (3) outside protective sheath (56) saw bit (4), saw bit (4) with protective sheath (56) terminal surface in close contact with.

5. An anti-wind head structure of a lawn mower as claimed in claim 1, 2, 3 or 4, wherein: the transmission shaft (3) penetrates through the saw blade (4) and is provided with a fixed sleeve.

6. An anti-winding head structure for a lawn mower as claimed in claim 1, 2, 3 or 4, wherein: the novel electric hand-held machine head is characterized in that a speed reducing mechanism is arranged in the machine head main body (1), the speed reducing mechanism comprises a small gear (11) arranged on a motor shaft of the driving motor (2), a large gear (12) meshed with the small gear (11) is arranged on the side edge of the small gear (11), and the large gear (12) is connected with the transmission shaft (3).