CN219514643U - Multipurpose mowing head - Google Patents

Abstract

The utility model discloses a multipurpose mowing head, which comprises a turntable connected with a machine head and a plurality of mowing assemblies of different types; the turntable is provided with a plurality of mounting areas at different positions corresponding to the plurality of mowing assemblies; any mowing assembly is suitable for being detachably mounted on a corresponding mounting area on the turntable, so that a plurality of mowing heads for different weeding scenes are formed. The utility model has the beneficial effects that: by arranging a plurality of installation areas at different positions on the turntable, when different mowing scenes are dealt with, different mowing assemblies and corresponding installation areas can be installed to obtain mowing heads with corresponding mowing functions, and compared with the traditional replacement of the whole mowing head, the replacement difficulty can be effectively reduced, so that a user can conveniently and rapidly replace the mowing heads; and the production cost can be reduced.

Description

Multipurpose mowing head

Technical Field

The utility model relates to the technical field of mowers, in particular to a multipurpose mowing head.

Background

A mower, also called a weeder, a lawnmower and the like, is a mechanical tool for trimming lawns, vegetation and the like. Because mowing targets of mowers are different, various mowing heads are often required to be used; therefore, the mowers currently on the market are generally equipped with a wide variety of mowing heads, the entire mowing head being replaced when facing different use scenarios. However, the entire grass-cutting head is a relatively complex assembly, which results in a high cost of using a plurality of different grass-cutting heads, and the large size of the grass-cutting head, which also makes the entire replacement inconvenient. Therefore, improvements to existing slotting heads are now urgently needed.

Disclosure of Invention

One of the purposes of the utility model is to provide a multipurpose grass cutting head which can cope with different scenes.

In order to achieve the purpose, the utility model adopts the following technical scheme: a multipurpose grass cutting head comprises a rotary table connected with a machine head and a plurality of grass cutting assemblies of different types; the turntable is provided with a plurality of mounting areas at different positions corresponding to the plurality of mowing assemblies; any one of the mowing assemblies is suitable for being detachably mounted on the corresponding mounting area on the turntable, so that a plurality of mowing heads for different weeding scenes are formed.

Preferably, one of said mower assemblies comprises at least one mower blade; the mounting area comprises at least one mounting groove arranged on the side part of the turntable, and the mowing knife is correspondingly mounted in the mounting groove.

Preferably, the mowing knife is rotatably mounted in the middle of the mounting slot, and the mowing knife is adapted to deflect along the mounting slot.

Preferably, one of said mower assemblies comprises a mounting plate and at least one torsion wire attached to a side of said mounting plate; the mounting area comprises a fixed area arranged in the middle of the turntable and at least one first limit groove arranged on the side part of the turntable; the mounting plate is suitable for being fixedly mounted in the fixing area, and the torsion wire is suitable for being in limit fit with the corresponding first limit groove.

Preferably, at least one pair of first supporting ribs is arranged on the side part of the turntable, and two first supporting ribs of each pair are arranged at intervals to form the first limit groove; the turntable is provided with clearance grooves at the positions of the side walls of each pair of the two first supporting ribs, which are opposite to each other.

Preferably, at least one of two opposite side walls of each pair of the two first supporting ribs is provided with a clamping block, and the clamping block is suitable for limiting the torsion wire along the axial direction of the turntable.

Preferably, one of the mowing assemblies comprises at least one mowing cord; the mounting area comprises at least one pair of limiting holes which symmetrically penetrate through the side part of the turntable and at least one second limiting groove which is arranged on the inner side of the turntable; the two ends of the grass mowing rope respectively penetrate through the corresponding limiting holes, and the middle part of the grass mowing rope is suitable for being in bending limiting fit with the corresponding second limiting grooves.

Preferably, the second limiting groove is arc-shaped or shaped like a Chinese character 'ji'.

Preferably, the multipurpose grass cutting head further comprises a cover plate, the cover plate is detachably fixed to the middle of the inner side of the rotary disc, and the cover plate is suitable for compacting a torsion wire or a grass cutting rope included in the grass cutting assembly.

Preferably, the multipurpose grass cutting head further comprises a plurality of isolation components with different sizes, any isolation component is detachably fixed in the middle of the rotary disc, the mounting plate and/or the cover plate of the grass cutting component are detachably mounted on the isolation components, and the rotary disc is suitable for being connected with heads with different models through the isolation components with different sizes.

Preferably, the outer contour of the turntable is in a frustum shape, and the inner side wall of the turntable is provided with reinforcing ribs, and the reinforcing ribs are equal in axial extension length along the turntable in the radial direction of the turntable.

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

(1) By arranging the mounting areas at a plurality of different positions on the turntable, when different mowing scenes are dealt with, different mowing assemblies and the corresponding mounting areas can be mounted, and the mowing heads with corresponding mowing functions can be obtained. Compared with the traditional replacement of the whole mowing head, the replacement difficulty can be effectively reduced, so that a user can conveniently and rapidly replace the mowing head.

(2) Through all setting up the installation zone that is used for installing different grass cutting assemblies on a carousel, compare traditional whole grass cutting head's replacement, can effectual reduction in production cost.

Drawings

Fig. 1 is a schematic structural diagram of one embodiment of the present utility model.

Fig. 2 is an exploded view of the embodiment of fig. 1 according to the present utility model.

Fig. 3 is a schematic structural view of another embodiment of the present utility model.

Fig. 4 is an exploded view of the embodiment of fig. 3 according to the present utility model.

Fig. 5 is a schematic view of the structure of the mounting plate in the present utility model.

Fig. 6 is a schematic view of the structure of the torsion wire in the present utility model.

Fig. 7 is a schematic structural view of a further embodiment of the present utility model.

Fig. 8 is an exploded view of the embodiment of fig. 7 according to the present utility model.

Fig. 9 is a schematic structural view of a cover plate in the present utility model.

Fig. 10 is a schematic structural view of a turntable in an axial direction in the present utility model.

Fig. 11 is a schematic diagram of a structure of a turntable in a bottom view.

Fig. 12 is an enlarged schematic view of the present utility model at a portion a in fig. 11.

Fig. 13 is a schematic diagram of a structure of a turntable in a front view.

Fig. 14 is a schematic structural view of a spacer according to the present utility model.

Fig. 15 is a schematic cross-sectional view of a grass-cutting head according to the present utility model.

Fig. 16 is a schematic view of the mounting structure of the mowing head and the head of the driving device in the present utility model.

In the figure: grass cutting head 100, turntable 11, connecting slot 110, mounting slot 111, mounting hole 1110, first spacing slot 112, first support rib 1121, fixture block 1122, clearance slot 113, second support rib 1131, spacing hole 114, second spacing slot 115, stiffener 116, first through-hole 1100, grass cutting assembly 12, grass cutting blade 121, pivot hole 1210, torsion wire 122, ferrule 1220, mounting disk 123, second through-hole 1230, peg 1231, grass cutting cord 124, isolation assembly 13, isolation post 131, threaded rod 1311, exchange sleeve 132, compression portion 1321, connecting portion 1322, fastener 14, cover plate 15, third through-hole 150, first positioning slot 151, second positioning slot 152, nut 200, drive 300, and head 310.

Detailed Description

The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

One preferred embodiment of the present utility model, as shown in fig. 1 and 16, is a multi-purpose grass cutting head, including a turntable 11 coupled to a head 310, and a plurality of different types of grass cutting assemblies 12. The turntable 11 is provided with a plurality of mounting areas at different positions corresponding to the plurality of mowing assemblies 12; any grass cutting assembly 12 can be detachably mounted with a corresponding mounting area on the turntable 11, so that a plurality of grass cutting heads 100 for different weeding scenes can be formed.

Specifically, turntable 11 may be fixedly mounted to handpiece 310 via fasteners, and mower assembly 12 is correspondingly removably mounted to turntable 11 to form mower head 100; when the mower is in operation, head 310 may rotate mower head 100 at a high speed to perform a cutting operation. When the grass cutting head 100 with different functions is replaced, the grass cutting head 100 with new functions can be obtained by only detaching the grass cutting assembly 12 mounted on the current grass cutting head 100 and then reinstalling another grass cutting assembly 12 on the corresponding mounting area on the turntable 11.

Compared with the traditional grass cutting machine which carries out the replacement of different grass cutting heads 100 when dealing with different grass cutting scenes, the grass cutting head 100 with different functions can be obtained by only carrying out the replacement of the grass cutting assembly 12. Compared with the traditional mode, the utility model can effectively reduce the replacement difficulty of the mowing head 100, and further can facilitate the quick replacement of mowing heads 100 with different functions for users. Because the grass cutting assembly 12 of the present utility model is adapted to a single turntable 11, the cost of replacing the grass cutting head 100 is significantly reduced as compared to conventional grass cutting assemblies.

It should be appreciated that the mower may cut or clean trees, lawns, moss, etc. Because of the large differences in the targets being trimmed, the configuration of mower assembly 12 used should be quite different from target to target. While the structure in which the different configurations of mower assemblies 12 are mounted is also quite different; the following description may be made with respect to specific embodiments of the various mowing assemblies 12.

Embodiment one: as shown in fig. 1, 2, 10 and 11, one of the mower assemblies 12 includes at least one mower blade 121; the mounting area on the turntable 11 includes at least one mounting groove 111 provided at a side of the turntable 11. When the mowing assembly 12 is installed, the mowing knife 121 can be correspondingly and detachably installed in the installation groove 111, and a mowing head 100 for trimming trees and lawns can be formed between the mowing knife 121 and the turntable 11.

It should be appreciated that the mower 121 is primarily used to trim relatively hard green plants. Is generally used for pruning trees and weeds with higher growth vigor.

It will be appreciated that the number of mower blades 121 included in mower assembly 12 may be selected according to the actual needs of those skilled in the art. In general, in order to ensure the stability of the grass cutting head 100 during operation, the number of the grass cutting blades 121 may be selected to be plural, and the number of the mounting grooves 111 may be plural, and the plurality of mounting grooves 111 may be provided at equal intervals in the circumferential direction of the turntable 11. For example, as shown in fig. 1, 2, 10 and 11, when the mowing assembly 12 includes two mowing knives 121, two mounting grooves 111 are provided on the side of the turntable 11 at 180 ° intervals along the circumferential direction, and the two mowing knives 121 are correspondingly mounted in the two mounting grooves 111.

In this embodiment, as shown in fig. 1, 2, 10 and 11, the mower blade 121 is rotatably mounted in the middle of the mounting groove 111, so that when the mower blade 121 is driven by the machine head 310 to perform trimming operation and encounters an obstacle, the mower blade 121 can deflect along the mounting groove 111 to avoid the obstacle.

It should be appreciated that since the mower is cutting with its end having the mower head 100 close to the ground, obstacles such as rocks may be encountered during cutting operations. If the grass cutter 121 is fixedly mounted, the grass cutter 121 rotating at a high speed may be broken or broken by touching the grass cutter 121 with an obstacle. Therefore, in order to reduce or avoid breakage of the grass cutter 121 when touching an obstacle, the grass cutter 121 may be rotatably mounted with the turntable 11 such that the grass cutter 121 may be deflected along the extending direction of the mounting groove 111 when the grass cutter 121 encounters an obstacle.

Specifically, as shown in fig. 1, 2, 10 and 11, a mounting hole 1110 is provided in the middle of the mounting groove 111, and the mounting hole 1110 penetrates the mounting groove 111 in the axial direction of the turntable 11. One end of the mowing knife 121 is provided with a rotary hole 1210; when the mower blade 121 is mounted, the mower blade 121 may extend the end provided with the pivot hole 1210 into the mounting groove 111 such that the pivot hole 1210 and the mounting hole 1110 are aligned, and thus the pivot hole 1110 and the pivot hole 1210 are penetrated by the detachable fastener 14 for rotational mounting of the mower blade 121.

It will be appreciated that the specific construction of the fastener 14 is well known to those skilled in the art, and that common fasteners 14 may employ bolts and mating tightening nuts.

It will also be appreciated that when the mower blade 121 is rotatably mounted to the mounting groove 111 and rotates at a high speed with the turntable 11, the mower blade 121 may extend in a direction parallel to the radial direction of the turntable 11 under the influence of centrifugal force. When the mower 121 is performing normal trimming operations, the mower 121 can be deflected to a small extent to effect trimming of green plants. And when the grass cutter 121 encounters an obstacle, the grass cutter 121 may deflect at a large angle along the mounting slot 111 to avoid the obstacle.

In order to ensure that the mower blade 121 can deflect at a large angle, as shown in fig. 11, an included angle α may be provided at both sides of the installation groove 111, and the included angle α may be 120 ° -180 °. It should be noted that, the larger the value of the included angle α is, the higher the avoiding effect of the mowing knife 121 is; however, the side of the turntable 11 also requires a mounting area for mounting other kinds of grass assemblies 12; thus, when included angle α is 180 °, it may interfere with the installation of other types of mower assemblies 12, and therefore, included angle α may preferably be 140 ° -160 °. Of course, the mounting area for mounting other types of mowing assemblies 12 and the mounting groove 111 may be spaced apart in the axial direction of the turntable 11, which may result in an increase in the axial length of the turntable 11, and thus in an increase in the trimming height of the mowing knife 121 or other types of mowing assemblies 12, so that the corresponding trimming effect is deteriorated.

Embodiment two: as shown in fig. 3, 4, 10 and 11, one of the mower assemblies 12 includes a mounting plate 123 and at least one torsion wire 122 attached to a side of the mounting plate 123. The mounting area on the turntable 11 further comprises a fixing area arranged in the middle of the turntable 11 and at least one first limit groove 112 arranged on the side of the turntable 11. When the mowing assembly 12 is installed, the installation disc 123 can be detachably and fixedly installed in a fixed area, meanwhile, the torsion wire 122 can be in limit fit with the corresponding first limit groove 112, and the torsion wire 122 can form the mowing head 100 for cleaning moss on the ground or the wall surface and weeds at corners or gaps through the installation disc 123 and the turntable 11.

It should be appreciated that the specific structure of the torsion wire 122 is well known to those skilled in the art. Generally, the torsion wire 122 is formed by twisting a plurality of fine wire windings. Meanwhile, when the first limiting groove 112 is provided on the turntable 11, the first limiting groove 112 is adjacent to the mounting groove 111, so as to avoid interference with the mounting groove 111.

Specifically, as shown in fig. 3 to 6, at least one bolt hole 1231 is provided on the side of the mounting plate 123, when the torsion wire 122 is connected to the mounting plate 123, a plurality of fine wires can be passed through the corresponding bolt holes 1231 together, and then the plurality of wires are folded in half along the bolt holes 1231 and twisted and wound, so that the torsion wire 122 connected to the mounting plate 123 can be obtained.

It will be appreciated that the particular number of torsion wires 122 may be selected as desired by those skilled in the art. Generally, in order to ensure the stability of the grass cutting head 100 during operation, the number of the torsion wires 122 may be plural, and the number of the first limiting grooves 112 may be plural, and the first limiting grooves 112 may be equally spaced along the circumferential direction of the turntable 11. For example, as shown in fig. 3 to 5 and fig. 10 and 11, the mowing assembly 12 includes four torsion wires 122, and four bolt holes 1231 are provided on the mounting plate 123 at equal intervals in the circumferential direction; four first limit grooves 112 are provided at equal intervals in the circumferential direction at the side of the turntable 11. After the mounting plate 123 is detachably fixed to the fixing area through the middle portion, the four torsion wires 122 can be correspondingly and limitedly matched with the four first limiting grooves 112.

In the present embodiment, as shown in fig. 10 to 13, the side portion of the turntable 11 is provided with a plurality of pairs of first support ribs 1121 corresponding to the number of the torsion wires 122 in the circumferential direction. The two first supporting ribs 1121 of each pair are arranged at intervals to form a first limit groove 112; therefore, when the torsion wire 122 is matched with the corresponding first limiting groove 112, the two first supporting ribs 1121 can compress the side parts of the torsion wire 122, so that the torsion wire 122 cannot be easily loosened.

Meanwhile, the turntable 11 is provided with clearance grooves 113 at opposite side wall positions of the two first support ribs 1121 of each pair. Therefore, when the torsion wire 122 is in compression fit with the corresponding first limiting groove 112, the two first supporting ribs 1121 forming the first limiting groove 112 can deform towards the direction of the clearance groove 113 on the corresponding side, so that the compression of the torsion wire 122 and the first limiting groove 112 can be conveniently performed, and meanwhile, the first supporting ribs 1121 can be ensured to generate enough extrusion force on the torsion wire 122 through enough deformation.

It will be appreciated that because the torsion wire 122 is bolted to the mounting plate 123, it may naturally sag and deflect in multiple directions about the bolt hole 1231, and thus, when the grass cutting head 100 formed by the torsion wire 122 is operated, the torsion wire 122 may deflect when blocked, thereby causing the torsion wire 122 to deviate from the operating position. Therefore, in order to ensure that the torsion wire 122 can sufficiently operate, the first limiting groove 112 may be provided at the side of the turntable 11 to limit the torsion wire 122.

Therefore, when the first limiting groove 112 is designed, the width of the first limiting groove 112 can be designed to be smaller than the diameter of the torsion wire 122, so that the first limiting groove 112 can be ensured to compress the torsion wire 122. Because the torsion wire 122 is formed by twisting the wire, the stiffness of the torsion wire 122 is high, and if the first limit groove 112 is directly formed on the turntable 11, the matching between the torsion wire 122 and the first limit groove 112 is difficult.

Therefore, in this embodiment, the first limiting grooves 112 are formed by the two first supporting ribs 1121 arranged at intervals, and the interval distance between the two first supporting ribs 1121 is smaller than the diameter of the torsion wire 122. So that the engagement of the torsion wire 122 can be facilitated by the deformation of the first support rib 1121 when the limit engagement of the torsion wire 122 with the first limit groove 112 is performed. In addition, in order to ensure that the first supporting rib 1121 can deform, the side portions, deviating from the first limiting groove 112 formed by the first supporting rib 1121, of the first supporting rib 1121 are provided with clearance grooves 113, and the clearance grooves 113 can provide deformation space for deformation of the first supporting rib 1121.

In this embodiment, as shown in fig. 10 to 12, the turntable 11 is provided with second support ribs 1131 at intervals on the side portions of the first support ribs 1121, and the second support ribs 1131 are provided at intervals with the first support ribs 1121 on the corresponding side to form the clearance grooves 113. And, the length of the second supporting rib 1131 along the axial direction of the turntable 11 is greater than the length of the first supporting rib 1121, so that when the first supporting rib 1121 breaks or breaks, the second supporting rib 1131 can avoid the broken or broken first supporting rib 1121 from splashing in the direction of the user.

In this embodiment, as shown in fig. 10 to 13, at least one of two opposite side walls of each pair of two first support ribs 1121 is provided with a latch 1122. When the torsion wire 122 is in limit fit with the first limit groove 112, the clamping block 1122 can limit the movement of the torsion wire 122 along the axial direction of the turntable 11.

Generally, the first support ribs 1121 are designed such that two first support ribs 1121 of each pair are disposed in parallel. Therefore, the direction of the pressing force of the first support rib 1121 against the torsion wire 122 is parallel to the rotation plane of the turntable 11. The first limiting groove 112 formed by the first supporting rib 1121 has weak limiting capability on the torsion wire 122 in the vertical axial plane, and mainly depends on the friction force between the torsion wire 122 and the first supporting rib 1121. Therefore, in order to improve the restriction ability of the first stopper groove 112 to the torsion wire 122 in the vertical axial plane, a stopper 1122 may be provided on the opposite side wall of the first support rib 1121. For the arrangement of the fixture blocks 1122, the fixture blocks 1122 may be arranged on one of the two opposite side walls of the two first support ribs 1121 of each pair, or the fixture blocks 1122 may be arranged on the two opposite side walls of the two first support ribs 1121 of each pair.

It should be appreciated that because the torsion wire 122 is formed by twisting a plurality of fine wires, the plurality of fine wires may increase wear of the side walls of the first support rib 1121 and the latch 1122 during cleaning operations of the torsion wire 122.

Therefore, in order to reduce the abrasion of the torsion wire 122 to the side wall of the first support rib 1121 and the clamping block 1122, in this embodiment, as shown in fig. 6, the clamping sleeve 1220 is sleeved at the position where the torsion wire 122 is matched with the first limiting groove 112. Thereby, the torsion wire 122 can be in extrusion fit with the side wall of the first support rib 1121 and the clamping block 1122 through the smooth outer surface of the clamping sleeve 1220, and further the abrasion to the first support rib 1121 and the clamping block 1122 can be effectively reduced; in addition, the sleeve joint matching of the sleeve 1220 and the torsion wire 122 can also avoid or slow down the dispersion of the torsion wire 122 in the rotation process.

Embodiment III: as shown in fig. 7, 8, 10 and 11, one of the mower assemblies 12 includes at least one straw rope 124. The mounting area further includes at least one pair of symmetrical retention holes 1110 extending through the sides of the turntable 11 and at least one second retention slot 115 disposed on the inside of the turntable 11. When the mowing assembly 12 is installed, two ends of the mowing rope 124 can be respectively penetrated through one corresponding limiting hole 1110, and the middle part of the mowing rope 124 can be in bending limiting fit with the corresponding second limiting groove 115, so that a mowing head 100 for mowing lawns can be formed between the mowing rope 124 and the turntable 11.

It should be appreciated that the specific structure of the grass rope 124 is well known to those skilled in the art and will not be described in detail herein. The number of the grass mowing ropes 124 may be one or may be plural, for example, as shown in fig. 7 and 8, in this embodiment, the number of the grass mowing ropes 124 is one, and then the number of the limiting holes 115 is a corresponding pair, two limiting holes 115 of the pair are symmetrically arranged 180 ° along the circumferential direction of the turntable 11, and the extending direction of the limiting holes 115 is parallel to the radial plane of the turntable 11. Meanwhile, the positioning holes 115 are respectively adjacent to the mounting groove 111 and the first positioning groove 112, so as to avoid interference between the positioning holes 115 and the mounting groove 111 or the first positioning groove 112.

It is understood that the number of the second limiting grooves 115 may be one or more. Generally, in order to balance the mass of the turntable 11, a plurality of second limiting grooves 115 may be used; for example, as shown in fig. 10 and 11, the number of the second limiting grooves 115 is two, and the two second limiting grooves 115 are symmetrically arranged and are respectively located between the two limiting holes 114 along the circumferential direction of the turntable 11, so that when the straw rope 124 is installed, the straw rope can be in bending limiting fit with any one of the second limiting grooves 115 through the middle part.

It will also be appreciated that both ends of the mowing cord 124 extend along the two limiting apertures 114 to the exterior of the turntable 11, respectively, for trimming. In the working process of the grass mowing rope 124, due to the fact that the quality of the two ends is uneven and the density of the lawn trimmed during trimming, the stress at the two ends of the grass mowing rope 124 is different, and then the larger end of the stress has a tendency of pulling the grass mowing rope 124 to slide along the limiting hole 114. In order to avoid or reduce the sliding trend of the straw rope 124, the middle part of the straw rope 124 may be bent and matched with the second limiting groove 115. Through the bending fit of the grass beating rope 124 and the second limiting groove 115, on one hand, the contact area of the grass beating rope 124 and the rotary table 11 can be increased to improve the friction force between the grass beating rope 124 and the rotary table 11, and further, the sliding trend of the grass beating rope 124 to one end during working is reduced; on the other hand, the stress direction of the straw rope 124 can be changed by bending the straw rope 124, so that the tendency that the straw rope 124 slides towards one end during working is further reduced.

In this embodiment, the specific structure of the second limiting groove 115 is various, including but not limited to the arc-shaped or "several" shaped second limiting groove 115 formed by the rib plate protrusion shown in fig. 10 and 11.

In one embodiment of the present utility model, as shown in fig. 4, 8, 9 and 15, the multipurpose grass-cutting head of the present utility model further includes a cover 15, and the cover 15 is detachably fixed to an inner middle portion of the turntable 11. Cover 15 may compress a torsion wire 122 or a string 124 included with mower assembly 12.

It will be appreciated that while the mower is in operation, the inner side of the turntable 11 may accumulate the weed or silt being trimmed, and that to avoid accumulation of weed or silt, a cover plate 15 may be mounted on the inner side of the turntable 11 to avoid the effect of accumulated weed or silt on the straw rope 124 or the torsion wire 122. Moreover, by pressing the torsion wire 122 or the grass rope 124 by the cover plate 15, the torsion wire 122 or the grass rope 124 can be prevented from being disturbed, that is, the working stability of the torsion wire 122 and the grass rope 124 is further improved.

In this embodiment, as shown in fig. 9, the cover 15 is circular, and a plurality of positioning slots are provided on the side of the cover 15 along the circumferential direction; when the cover plate 15 is fixedly connected with the turntable 11, the cover plate 15 can be in press fit with the torsion wire 122 or the grass rope 124 through the positioning groove at the side part.

It will be appreciated that when the cover 15 is fixedly connected to the turntable 11, the cover 15 may be directly compressed by the side edges with the torsion wires 122 or the grass ropes 124. However, during the operation of the torsion wire 122 or the mowing rope 124, shearing and extrusion are generated between the side edge of the cover plate 15 and the torsion wire 122 or the mowing rope 124, so that abrasion of the torsion wire 122 or the mowing rope 124 is further increased. Therefore, the arc-shaped positioning groove can be arranged to be in press fit with the torsion wire 122 or the grass rope 124, so that the abrasion of the cover plate 15 to the torsion wire 122 or the grass rope 124 can be reduced while the torsion wire 122 or the grass rope 124 is not swayed.

Specifically, when the mowing assembly 12 including the torsion wire 122 is mounted on the turntable 11, the cover plate 15 may be engaged with the torsion wire 122 through a positioning groove on the side. Because the torsion wire 122 is bolted with the mounting plate 123, the positioning groove only needs to ensure that the torsion wire 122 does not shake, i.e. the pressing force of the positioning groove on the torsion wire 122 can be set smaller.

When the mowing assembly 12 comprising the mowing rope 124 is mounted on the turntable, the cover plate 15 can compress the mowing rope 124 through the cooperation of the plate surface of the middle part and the second limiting groove 115. Meanwhile, the cover plate 15 can be clamped with the grass beating rope 124 through the positioning groove at the side part, so that the grass beating rope 124 is prevented from shaking in the working process.

It will be appreciated that if the diameters of the rope 124 and the wire 122 are the same or similar, the positioning slot on the side of the cover 15 need only be one size. Generally, the diameters of the string 124 and the wire 122 are different, and the mounting heights of the string 124 and the wire 122 are also different. Accordingly, the positioning grooves of the side of the cover plate 15 may include a first positioning groove 151 corresponding to the torsion wire 124 and a second positioning groove 152 corresponding to the grass-mowing cord 124.

In one embodiment of the present utility model, as illustrated in fig. 2, 4, 8, 14 and 15, the multi-purpose grass-cutting head 100 of the present utility model further includes a plurality of different sized spacer assemblies 13; any isolation assembly 13 can be detachably and fixedly arranged in a fixed area arranged in the middle of the turntable 11. So that the mounting plate 123 for attaching the torsion wires 122 and the cover plate 15 can be detachably mounted to the spacer assembly 13. Also, the grass-cutting head 100 formed by the grass-cutting assembly 12 and the turntable 11 may be connected with different models of heads 310 by different sizes of the spacer assembly 13.

It will be appreciated that a mower generally includes a drive device 300, a handpiece 310, and a mower head 100. The driving device 300 can drive the head 310 to drive the mowing head 100 to rotate at a high speed as a driving source. The size and model of the corresponding handpiece 310 may vary depending on the power or type of the driving device 300 (e.g., a gasoline engine or a lithium motor) or the manufacturer. Therefore, in order to adapt to different sizes of heads 310, grass-cutting head 100 and heads 310 can be detachably connected through size-replaceable isolation assemblies 13, so that when grass-cutting head 100 of the present utility model is used for different sizes of heads 310, only the corresponding isolation assemblies 13 need to be replaced.

In this embodiment, as shown in fig. 10, 11, 14 and 15, a connection groove 110 is provided in the middle of the turntable 11, and a first through hole 1100 is provided in the center of the connection groove 110. The isolation assembly 13 comprises an isolation column 131, the isolation column 131 can be in clamping fit with the connecting groove 110, a first connecting hole which can be aligned with the first through hole 1100 is formed in the center of the isolation column 131, and when the mowing head 100 is connected with the machine head 310, the machine head 310 can be connected with the first connecting hole of the isolation column 131 through the first through hole 1100 by a connecting shaft; the upper end of the turntable 11 is then abutted against the handpiece 310 via the spacer 131. When the mower head 100 needs to be connected with different types of machine heads 310, only the isolation column 131 with the first connecting holes of different sizes needs to be replaced to be clamped with the turntable 11, and then the mower head is connected with the connecting shaft of the corresponding machine head 310 through the corresponding first connecting hole.

It will be appreciated that there are a variety of ways in which the first coupling aperture may be coupled to the coupling shaft, and that threaded connections are common. Meanwhile, the connection mode between the isolation column 131 and the connection groove 110 is various, for example, as shown in fig. 10, 11 and 14, the cross sections of the connection groove 110 and the isolation column 131 are hexagonal, or any other polygonal or elliptical shape, or spline connection mode is adopted; it is only necessary to ensure that the spacer 131 and the coupling groove 110 do not rotate relative to each other in the circumferential direction, and the size of the coupling groove 110 is larger than that of the first through hole 1100.

Meanwhile, as shown in fig. 14 and 15, the lower portion of the isolation column 131 is provided with a connection rod; when the grass-cutting head 100 is coupled to the head 310, the mounting plate 123 and/or the cover plate 15 for coupling the torsion wire 122 may pass through the connecting rod through the second through-hole 1230 and the third through-hole 150, which are centrally provided, respectively, and then detachably fixed with the spacing member engaged with the connecting rod.

It can be appreciated that there are various detachable manners of the limit component and the connecting rod, wherein the common detachable manner is threaded engagement; i.e. the connecting rod is a threaded rod 1311 and the limiting member is a nut 200.

It should be noted that when the grass-cutting head 100 is connected to a different type of head 310, the mounting plate 123 and/or the cover plate 15 connected to the head needs to be detached first for replacing the different size of the isolation column 131, and then the mounting plate 123 and/or the cover plate 15 need to be reconnected to the connecting rod again after the new isolation column 131 is replaced; this results in a cumbersome connection of head 100 to different types of headpiece 310.

To further facilitate the replacement of the grass-cutting head 100 with a different model of handpiece 310, in this embodiment, as shown in fig. 14 and 15, the isolation assembly 13 further includes a grafting sleeve 132; the spacer 131 may be detachably fixed to the middle of the turntable 11 by connection with the adapter 132, so that the grass-cutting head 100 may be connected with the connection shaft of the head 310 by the adapter 132. Therefore, when the mowing head 100 needs to be connected with the machine heads 310 of different models, only the exchange sleeve 132 with different sizes needs to be replaced, and the isolation column 131 does not need to be detached.

Specifically, as shown in fig. 14 and 15, the exchange sleeve 132 includes a pressing portion 1321 and a connecting portion 1322, and the exchange sleeve 1322 may pass through the first through hole 1100 on the turntable 11 through the connecting portion 1322 and be screwed with the first connecting hole of the isolation column 131 until the pressing portion of the exchange sleeve 132 is tightly attached to the middle upper end surface of the turntable 11, so as to detachably fix the isolation column 131 to the turntable 11. Meanwhile, the connecting sleeve 1322 may be screwed with the connecting shaft of the handpiece 310 through a centrally disposed internal thread. Moreover, by connecting the adapter sleeve 132 with internal threads of different sizes with the connecting shafts of the heads 310 of different types, the matched connection of the mowing head 100 with the heads 310 of different types can be ensured.

In one embodiment of the present utility model, as shown in fig. 1 to 4, 7, 8 and 15, the outer contour of the turntable 11 is in a frustum shape; compared with the traditional round table shape, the application of materials can be reduced, so that the cost is reduced. Meanwhile, the turntable 11 of the frustum shape may have higher rigidity in the axial direction of the turntable 11 to improve structural stability of the turntable 11.

In this embodiment, as shown in fig. 10, the inner side wall of the turntable 11 is provided with the reinforcing ribs 116, and the reinforcing ribs 116 have equal extension lengths in the radial direction of the turntable 11 in the axial direction of the turntable 11.

It can be appreciated that, since the lengths of the reinforcing ribs 116 extending along the axial direction of the turntable 11 are equal in the radial direction of the turntable 11, the reinforcing ribs 116 are recessed inward along the radial direction of the turntable 11, so that when the mowing head 100 works, the turntable 11 with the concave structure can avoid or reduce interference of mowing work on the mowing assembly 12 caused by different concave-convex surfaces.

The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a multi-purpose grass cutting head, includes the carousel of being connected with the aircraft nose, its characterized in that: also included are a plurality of different types of mowing assemblies; the turntable is provided with a plurality of mounting areas at different positions corresponding to the plurality of mowing assemblies; any one of the mowing assemblies is suitable for being detachably mounted on the corresponding mounting area on the turntable, so that a plurality of mowing heads for different weeding scenes are formed.

2. The multi-purpose grass cutting head of claim 1, wherein: wherein one of the mower assemblies comprises at least one mower blade; the mounting area comprises at least one mounting groove arranged on the side part of the turntable, and the mowing knife is correspondingly mounted in the mounting groove.

3. The multi-purpose grass cutting head of claim 2, wherein: the mowing knife is rotatably mounted in the middle of the mounting groove, and is suitable for deflecting along the mounting groove.

4. The multi-purpose grass cutting head of claim 1, wherein: one of the mower assemblies comprises a mounting plate and at least one torsion wire connected to the side of the mounting plate; the mounting area comprises a fixed area arranged in the middle of the turntable and at least one first limit groove arranged on the side part of the turntable; the mounting plate is suitable for being fixedly mounted in the fixing area, and the torsion wire is suitable for being in limit fit with the corresponding first limit groove.

5. The multi-purpose grass cutting head of claim 4, wherein: the side part of the turntable is provided with at least one pair of first supporting ribs, and two first supporting ribs of each pair are arranged at intervals to form the first limit groove; the turntable is provided with clearance grooves at the positions of the side walls of each pair of the two first supporting ribs, which are opposite to each other; the torsion wire is suitable for being in limit fit with the first limit groove through the sleeved clamping sleeve.

6. The multi-purpose grass cutting head of claim 5, wherein: at least one of two opposite side walls of each pair of the first supporting ribs is provided with a clamping block; the clamping block is suitable for being in extrusion fit with the clamping sleeve, and further limiting the torsion wire along the axial direction of the turntable.

7. The multi-purpose grass cutting head of claim 1, wherein: one of the mowing assemblies comprises at least one mowing rope; the mounting area comprises at least one pair of limiting holes which symmetrically penetrate through the side part of the turntable and at least one second limiting groove which is arranged on the inner side of the turntable; the two ends of the grass mowing rope respectively penetrate through the corresponding limiting holes, and the middle part of the grass mowing rope is suitable for being in bending limiting fit with the corresponding second limiting grooves.

8. The multi-purpose grass cutting head of claim 1, wherein: the multipurpose grass cutting head further comprises a cover plate, the cover plate is detachably fixed to the middle of the inner side of the rotary disc, and the cover plate is suitable for compacting a torsion wire or a grass cutting rope included in the grass cutting assembly.

9. The multi-purpose grass cutting head of claim 8, wherein: the multipurpose mowing head further comprises a plurality of isolation assemblies with different sizes, any isolation assembly is detachably fixed in the middle of the turntable, the mounting plate and/or the cover plate of the mowing assembly are/is detachably arranged on the isolation assembly, and the turntable is suitable for being connected with heads with different models through the isolation assemblies with different sizes.

10. A multi-purpose grass cutting head as claimed in any one of claims 1 to 9, wherein: the outer contour of carousel is the frustum, the inside wall of carousel is provided with the strengthening rib, the strengthening rib is in the radial direction of carousel is followed the axial extension length of carousel equals.