CN202085483U

CN202085483U - Cutter device for mowing machine

Info

Publication number: CN202085483U
Application number: CN2010205956697U
Authority: CN
Inventors: 陈柏州
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-08
Filing date: 2010-11-08
Publication date: 2011-12-28
Anticipated expiration: 2020-11-08

Abstract

The utility model relates to a cutter device for a mowing machine, which can be driven to rotate by a rotating shaft of the mowing machine and comprises a cutter holder, two blade units and two limit units, wherein the cutter holder is mounted on the rotating shaft; the blade units can rotate along with the cutter holder; the cutter holder comprises two end parts at intervals; the blade units are respectively mounted at the end parts and respectively comprise a blade protruding out of the corresponding end part and a pivot part for mounting the blade on the corresponding end part; the limit units respectively correspond to the blades and respectively comprise a buffer slot and a limit part; and the buffer slots can be mounted on the cutter holder or the corresponding blades. When being impacted intensely, the blades can swing along the buffer slots in a pivot mode that the buffering effect is achieved and the cracking of the blades is avoided. Moreover, the blades can rapidly return to the normal position under the action of a centrifugal force so that the blades are avoided being clamped below the cutter holder to cause fault.

Description

The mower knife device

Technical field

The utility model relates to a kind of mower, particularly relates to a kind of by the cutter device of the motor driven of this mower.

Background technology

The form of general mower roughly has the difference of portable and cart type, and is to utilize the motor driven blade rotation to reach the purpose of mowing.And Fig. 1 is the blade apparatus of No. 5649413, United States Patent (USP), and it comprises the tool rest 11 of a circle, two compartment of terrains are installed in the blade unit 12 on this tool rest 11, and the rope 13 of two outstanding these tool rests 11.Described blade unit 12 all has a blade 121, and a sliding bar 122.This blade 121 has a chute that runs through 123.This sliding bar 122 passes the chute 123 of this blade 121, and this blade 121 is installed on this tool rest 11.

When mower operated, described rope 13 can be by whipping ground cutting weeds.Centrifugal action when 121 on this blade is subjected to these tool rest 11 rotations, and around these sliding bar 122 rotations, and outwards throw away, at this moment, this sliding bar 122 is positioned at an expansion end 124 of this chute 123, and makes this blade give prominence to tool rest 11.Have barriers such as stone or foreign material unavoidably on the general meadow, adding described blade 121 can freely revolve and turn around, therefore when running into barrier described blade 121 can toward this tool rest move for 11 times and excessive in contract, again because in the process of mowing, the chip that produces can splash everywhere with residual and jam on 121 on tool rest 11 and blade, in use for some time, can cause blade 121 to be stuck in this tool rest 11 belows, and can not bring into play centrifugal action because of contracting in excessively, and can't be thrown out of, in addition, when having only a blade 121 to be fastened on situation below this tool rest 11, can produce fierce vibrations when causing turning round because of the asymmetric whipping evenly of structure.Therefore, general blade apparatus has the shortcoming that breaks down easily really.

Summary of the invention

The purpose of this utility model is to provide a kind of blade of avoiding because of cracked the hurting sb.'s feelings that be impacted, and can avoid the mower knife device of fault.

The cutter device of mower of the present utility model can be by a turning cylinder driven rotary of a mower, and comprises: the tool rest on turning cylinder that is installed in this mower linkedly, two can be along with tool rest rotation of blade unit, and two position-limiting units.This tool rest comprises two separately and the end of neighboring edge.Described blade unit is installed in described end respectively, and all comprises the blade of an outstanding described end, and one is installed in articulated part on this end with this blade.Described position-limiting unit is corresponding described blade respectively, and all comprises a dashpot that is arranged on this tool rest or this blade, and one is arranged in this dashpot and locating part that can relative slip with this dashpot.

The dashpot of the cutter device of mower of the present utility model is arranged on this tool rest, and the end of running through this tool rest respectively, and all have a stop end and positive stop end that is positioned at two end opposite, described locating part passes one of them blade respectively, and be plugged in the dashpot, each position-limiting unit also comprises a groove leg around dashpot, this groove leg have one to should stop end and can for this locating part against and limit the stop portion of this blade amplitude of fluctuation.

Each blade of the cutter device of mower of the present utility model all also has a cutter pivot hole that runs through, and one with this cutter pivot hole separately and the spacing hole that wears of this locating part of confession, this tool rest also comprises two seat pivot holes that run through described end respectively, described articulated part is located in respectively in the cutter pivot hole and seat pivot hole of homonymy, and makes described blade around its pivot pendulum.

The blade of the cutter device of mower of the present utility model all has the cutting part of outstanding this tool rest, each cutting part all one of tool curved and can with a barrier bump time, make the relative tool rest pivot pendulum of blade be subjected to the push broach sword.

The blade of the cutter device of mower of the present utility model abuts on the bottom surface of this tool rest.

The beneficial effects of the utility model are: utilize described position-limiting unit to limit the amplitude of described blade swing, and avoid described blade in use, because contract excessively, and the situation that is stuck under this tool rest takes place, to reach the purpose that reduces fault.

Description of drawings

Fig. 1 is a schematic perspective view, shows the blade of No. 5649413 patents of invention of a United States Patent (USP) among the figure;

Fig. 2 is a three-dimensional exploded view, shows a preferred embodiment of the cutter device of the utility model mower among the figure;

Fig. 3 is a schematic top plan view, shows a situation that blade is run into a barrier of this preferred embodiment among the figure.

Embodiment

Below in conjunction with drawings and Examples the utility model is elaborated.

Consult Fig. 2,3, a preferred embodiment of the cutter device of the utility model mower, can be driven by a turning cylinder 5 of a mower, and (be the direction of arrow A shown in Figure 3 along a mowing direction, be clockwise direction in the present embodiment) rotation, the cutter device of this mower comprises: one is installed in the tool rest 2 on this turning cylinder 5, two blade units 3 that are installed in swingably on this tool rest 2 linkedly, and the position-limiting unit 4 of two corresponding described blade units 3 of difference.

The tool rest 2 of this preferred embodiment is the narrower oval-shaped flat boards in two ends, and comprise 23, two of a seat end face 21, seat bottom surface 22, axle perforation that runs through this end face 21 and seat bottom surface 22 and can wear for this turning cylinder 5 end 24 on corresponding narrow limit also separately, and two seat pivot holes 25 that run through described end 24 respectively.

The blade unit 3 of present embodiment is paired with the quantity of position-limiting unit 4, and is installed in two ends 24 of this tool rest 2 respectively, and because the running of both sides is all identical with configuration mode, therefore in the following description, only describes the configuration scenario of a side.

Described blade unit 3 can be with 2 rotations of this tool rest, and comprise that one is positioned at these tool rest 2 belows and abuts in blade 31 on the seat bottom surface 22 of this tool rest 2, and one is installed in articulated part 32 under this tool rest 2 with this blade 31.Wherein, this blade 31 is microscler tabular, and have the cutting part 312 of the installation portion 311 of this bottom surface 22 that reclines, outstanding this end 24, a cutter pivot hole 313 that runs through this installation portion 311, and one with this cutter pivot hole 313 spacing hole 314 separately.

Described cutting part 312 is rectangular, and have an arc and be positioned at periphery be subjected to push broach sword 315.This cutter pivot hole 313 is connected with the seat pivot hole 25 of homonymy, and this articulated part 32 is located in this cutter pivot hole 313 and the seat pivot hole 25, whereby this blade 31 is installed in this tool rest 2 times, and this blade 31 can be put around these articulated part 32 horizontal pivots.In this preferred embodiment, described articulated part 32 is bolt groups that formed by nut and screw or rivet combination.

The dashpot 41, one that the position-limiting unit 4 of present embodiment comprises an end 24 of running through this tool rest 2 is around the groove leg 42 of this dashpot 41, a locating part 43, and a pad 44 that is set on this locating part 43.This locating part 43 passes the spacing hole 314 of this blade 31, and is plugged in this dashpot 41.Therefore, this locating part 43 can be swung with this blade 31, and slides along this dashpot 41.In this preferred embodiment, this locating part 43 is bolt groups that combined by nut and screw, and matches with described pad 44, this blade 31 is pressed from both sides swingably the seat bottom surface 22 that leans against this tool rest 2.

Described dashpot 41 has a stop end 411 and positive stop end 412 that is positioned at two end opposite, and this groove leg 42 has one to stop portion 413 that should stop end 411.In this preferred embodiment, described dashpot 41 is semicircular arc and extends, and is positioned at two opposition sides of this pivot hole 25 with this perforation 23.Yet this articulated part 32 does not need to exceed with present embodiment with the position of dashpot 41, also can exchange each other, just this dashpot 41 is arranged on 32 of this perforation 23 and this articulated parts, and it should be noted that, at this moment, in order to cooperate the path of blade 31 pivots pendulum, the direction of described dashpot 41 bendings is opposite with this preferred embodiment.

Drive when the cutter device of the mower of present embodiment is subjected to turning cylinder 5, and during along this mowing direction high speed rotating, described locating part 43 is positioned between the two ends of this dashpot 41, and the cutting part 312 of described blade 31 can contact and cut off weeds with weeds.

In the mowing process, when blade 31 runs into a barrier 6 (shown in Fig. 3 imaginary line), because the described push broach sword 315 that is subjected to is to meet to weeds with an arcwall face, therefore, blade 31 and barrier 6 against the time, can be subjected to the reaction force that barrier 6 acts on blade 31, make the blade unit 3 that runs into barrier 6 around these articulated part 32 swings, and then blade 31 is put towards the direction pivot in contrast to arrow A with respect to tool rest 2, about the pivot pendulum, it should be noted that, In the view of the user, blade 31 is what to continue along with 2 rotations of this tool rest, but is object of reference with tool rest 2, and blade 31 is axle pivot and these tool rest 2 swings relatively with this articulated part 32 also simultaneously.When blade 31 is put with respect to tool rest 2 pivots, driving this locating part 43 slides along this dashpot 41, and it is close to this stop end 411, and at this locating part 43 during against this stop portion 413, reach the amplitude peak of pivot pendulum, and after leaving this barrier 6, this blade 31 can recover normal condition rapidly because of centrifugal action.

From the above mentioned, when not having barrier 6, blade 31 is along with these tool rest 2 rotations; When blade 31 and barrier 6 bump or against the time, blade 31 is along with these tool rest 2 rotations the time, this tool rest 2 pivots pendulum relatively also, thereby avoid blade 31 and barrier 6 very stiff and demanding collisions; After blade 31 avoiding obstacles 6, the amplitude of blade 31 relative tool rest 2 pivots pendulum diminishes gradually, is returned to normal operating condition at last.Hence one can see that, uses when the mower of the utility model cutter device is installed, even run into barrier 6, the user does not need manually to avoid obstacle yet.

This kind structure can avoid that blade 31 and barrier 6 are very stiff and demanding to be collided impairedly, and prolongs service life of blade 31, or avoids taking place the cracked situation of hurting sb.'s feelings of causing of blade 31.On the other hand, the cutting part 312 of this blade 31 can be subjected to the restriction of this dashpot 41 when swing, make this cutting part 312 give prominence to a side frequently at this tool rest 2, and can not contract below this tool rest 2 in excessive because of amplitude of fluctuation, therefore can avoid described blade 31 to be stuck in this tool rest 2 belows because of the long-pending plug of chip, cause fault and the situation that can't cut weeds, in addition, also can be in when running, avoid contracting and fierce vibrations in the blade 31 of monolithic, so can realize higher stability in the use.Therefore, the utility model has the fault of avoiding really to be taken place, and can improve the advantage of safety in utilization.

In addition, be worth mentioning, the configuration mode of this position-limiting unit 4 does not exceed with present embodiment, though just the dashpot 41 of the position-limiting unit 4 of present embodiment is arranged on this tool rest 2, yet also can be separately positioned on the installation portion 311 of described blade 31, this locating part 43 ran through these tool rest 2 ground and was located in this dashpot 41 this moment.So configuration mode can limit this blade 31 amplitudes of fluctuation equally, reaches the purpose of avoiding fault to take place, can improve safety in utilization and convenience simultaneously, so can reach the purpose of this utility model really.

Claims

1. mower knife device, can be by a turning cylinder driven rotary of mower, and comprise: the tool rest on turning cylinder that is installed in this mower linkedly, two respectively can be along with this tool rest be installed in blade unit on this tool rest rotatably, and this tool rest comprises two separately and the end of neighboring edge; It is characterized in that: but each blade unit all comprises the blade of an outstanding described end and pivot pendulum, and one be installed in articulated part on this end with this blade, this mower knife device also comprises the position-limiting unit of two corresponding described blades of difference, each position-limiting unit all comprises a dashpot that is arranged on this tool rest or this blade, and one is arranged in this dashpot and locating part that can relative slip with this dashpot.

2. mower knife device according to claim 1, it is characterized in that: described dashpot is arranged on this tool rest, and the end of running through this tool rest respectively, and all have a stop end and positive stop end that is positioned at two end opposite, described locating part passes one of them blade respectively, and be plugged in the dashpot, each position-limiting unit also comprises a groove leg around dashpot, this groove leg have one to should stop end and can for this locating part against and limit the stop portion of this blade amplitude of fluctuation.

3. mower knife device according to claim 2, it is characterized in that: each blade all also has a cutter pivot hole that runs through, and one with this cutter pivot hole separately and the spacing hole that wears of this locating part of confession, this tool rest also comprises two seat pivot holes that run through described end respectively, and described articulated part is located in respectively in the cutter pivot hole and seat pivot hole of homonymy.

4. mower knife device according to claim 3, it is characterized in that: described blade all has the cutting part of outstanding this tool rest, each cutting part all have one curved and can with barrier bump the time, make the relative tool rest pivot pendulum of blade be subjected to the push broach sword.

5. mower knife device according to claim 4 is characterized in that: described blade abuts on the bottom surface of this tool rest.