CN100421803C

CN100421803C - Tree branch cutter

Info

Publication number: CN100421803C
Application number: CNB2004100615801A
Authority: CN
Inventors: 竹田胜文; 中井利成
Original assignee: NT PRECISION CORP
Current assignee: NT PRECISION CORP
Priority date: 2004-04-12
Filing date: 2004-12-27
Publication date: 2008-10-01
Anticipated expiration: 2024-12-27
Also published as: HK1081897A1; CN1683083A; JP4227064B2; JP2005297351A

Abstract

This tree branch cutter is constituted of a main body member (11) comprising an insertion opening (20) for wood to be cut (W1), a guide path (30) continuing to the insertion opening (20) and a discharge part (40)for the cut wood (W2); a drive part (50) ; and a cutting part (70). The drive part (50) includes a crank mechanism part (60) connected with a drive motor (51) through a reduction gear part (52). The cutting part (70) has a slider (71) which reciprocates by the crank mechanism part (60) and a blade (76) which is arranged at the tip of the slider (71) and advances to/recedes from the forward part of the guide path 30. The tree branch cutter is used for small-scale horticulture which can inhibit noise during operation, easily cut tree branches and make easy its carriage and handling in maintenance and inspection.

Description

The branch cutting machine

Technical field

The branch cutting machine that the branch that the present invention relates to the trees beta pruning, cuts after felling is cut off.

Background technology

The branch of cutting after beta prunings such as trees, the felling normally is embedded in as fertilizer sources in the soil, is exactly to burn in addition.In this occasion, so that operation, the disintegrating machine that mainly uses gardening to use cuts into suitable size for branch is cut off.

Aforementioned gardening disintegrating machine generally is to make the swivel plate rotation that cutoff tool is housed in this disintegrating machine, and branch is contacted with aforementioned swivel plate, so that branch is cut off (with reference to patent documentation 1).Also have plenty of in cylinder a plurality of rotating knifes of installation, near the position of rotation of this rotating knife, dead knife is set simultaneously, and make aforementioned cylinder rotation, cut off (with reference to patent documentation 2) after utilizing dead knife and rotating knife that branch is sandwiched.

But,, impact the sound of this device and cause noise very big so the driving sound of motor etc. adds branch while the disintegrating machine of above-mentioned patent documentation all is to make cutter (swivel plate, the cylinder) rotation of cutting off usefulness cut off branch.And, in order to obtain revolving force, have to use big motor, to obtain high output.And when adopting the disintegrating machine of patent documentation 2, adopt rotating knife and dead knife, and cost will increase, and simultaneously, the weight of disintegrating machine itself can increase.Thereby moving difficulty, the convenience of use is poor.

As mentioned above, disintegrating machine is because the problem of aspects such as noise or use mainly is to be used by the bigger horticulture of scale in the past.For this reason, urgently wish to have noise in the time of can suppressing work, can handle branch simultaneously easily, move and maintenance etc. easily, be suitable for the branch treating apparatus that gardening is on a small scale used.

[patent documentation 1] Japanese kokai publication hei 7-32319 communique

[patent documentation 2] TOHKEMY 2001-269590 communique

Summary of the invention

The present invention is in view of aforesaid problem points, purpose be to provide a kind of when suppressing work noise, can cut off branch simultaneously easily, move and branch cutting machine that easy small-scale gardening such as maintenance is used.

The branch cutting machine of technical scheme 1 is by body member, drive division, cut-out portion, pressing member constitutes, described body member has the insertion opening that is used to be cut off material, with the continuous guiding road of this opening, be located at the pressing plate in guiding the place ahead, road and the discharge portion that is used for cutting off material, described drive division is provided in the described body member, the crank mechanism portion that comprises CD-ROM drive motor and connect through reduction gearing portion, described cut-out portion possesses owing to the effect of described crank mechanism portion and reciprocating slide mass and be provided to the front end of this slide mass and the cutter of advancing and retreat with respect to the place ahead, described guiding road, described pressing member is made of a plurality of flat spring materials along guiding road direction and row arrangement above described guiding road, disposed in the front portion on described guiding road owing to what the effect of ratchet mechanism was rotated and sent cylinder, the lifting interlock of described ratchet mechanism and described slide mass and at every turn rotate predetermined angular, described guiding road for the angle of the cutter of described cut-out portion be 45 degree to 75 degree, described cutter is that 10 degree are to 30 degree for the setting angle of the pressing plate of being located at the place ahead, described guiding road.

Because the branch cutting machine of technical scheme 1 is by body member, drive division, cut-out portion constitutes, described body member has the insertion opening that is used to be cut off material, with continuous guiding road of this opening and the discharge portion that is used for cutting off material, described drive division is provided in the described body member, the crank mechanism portion that comprises CD-ROM drive motor and connect through reduction gearing portion, described cut-out portion possesses owing to the effect of described crank mechanism portion and reciprocating slide mass and be provided to the front end of this slide mass and the cutter of advancing and retreat with respect to the place ahead, described guiding road, can reduce so be cut off the needed load of the cut-out of material.

The motor that therefore can reduce traditional disintegrating machine drives sound and adds that branch impacts cutoff tool (swivel plate, cylinder) or device itself and the noise of formation.Cut off branch because can realize the miniaturization of CD-ROM drive motor and available better simply mechanism again,, be convenient to the mobile maintenance etc. that reaches so can realize the lightweight of branch cutting machine itself.

Because the guiding road of the branch cutting machine of technical scheme 1 is that 45 degree are to 75 degree for the angle of the cutter of described cut-out portion, and cutter is that 10 degree are to 30 degree for the setting angle of pressing plate, so the required cut-out resistance of supplying with by the guiding road of the cut-out that is cut off material can reduce, and can alleviate the load that on cutter, produces when material tilts to cut off being cut off.

Because the branch cutting machine of technical scheme 1 has disposed the pressing member that is used to be cut off material, described pressing member is made of a plurality of flat spring materials along guiding road direction and row arrangement above described guiding road, so can adapt to a plurality of occasions that material inserts that are cut off, even can adapt to the different occasion of size shape that is cut off material (branch), can be pressed on the guiding road being cut off material more reliably.

Because the branch cutting machine of technical scheme 1 has disposed in the front portion on described guiding road owing to what the effect of ratchet mechanism was rotated and has sent cylinder, the lifting interlock of described ratchet mechanism and described slide mass and at every turn rotate predetermined angular, so can supply with to guiding the place ahead, road reliably being cut off material, can make to be cut off material successively, cut off by cutter quantitatively.

Description of drawings

Fig. 1 is the unitary side view of branch cutting machine of the present invention.

Fig. 2 is the whole front view of branch cutting machine of the present invention.

Fig. 3 is the interior major part side view of body member of Fig. 1.

Fig. 4 is the front view of crank mechanism portion and the cut-out portion of Fig. 3.

Fig. 5 is near the major part stereogram of pressing member of Fig. 3.

Fig. 6 is near the major part stereogram cylinder sent of Fig. 3.

The specific embodiment

Below in conjunction with description of drawings the present invention.Fig. 1 is the unitary side view of branch cutting machine of the present invention, Fig. 2 is the whole front view of branch cutting machine of the present invention, Fig. 3 is the interior major part side view of body member of Fig. 1, Fig. 4 is the front view of crank mechanism portion and the cut-out portion of Fig. 3, Fig. 5 is near the major part stereogram the pressing member of Fig. 3, and Fig. 6 is near the major part stereogram cylinder sent of Fig. 3.

Branch cutting machine 10 of the present invention possesses as shown in Figures 1 and 2: body member 11, handle portion 15, foot 16, wheel 17.Body member 11 by can about left cover body 12a and the right cover body 12b cut apart constitute.Handle portion 15 usefulness set bolts 14 are fixed on the body member 11 (left cover body 12a, right cover body 12b), and foot 16 also is fixed on the axle 13 described later with set bolt 14.Especially as shown in Figure 2, being cut off material W1 (mainly being branch) inserts by inserting opening 20.Symbol 15g among the figure is a handle, and 17s is an axletree, and 18a is a main switch, and h is a hook.On this hook h, can hang suitable sack (not shown).

Fig. 3 is the major part side view after taking off left cover body 12a on the body member 11.As described in technical scheme 1, on branch cutting machine 10 of the present invention, be cut off insertion opening 20 that material W1 uses and with the continuous guiding road 30 of this opening 20 and cut off the discharge portion 40 that material W2 uses in the internal configurations of body member 11.

Also be equipped with drive division 50 and cut-out portion 70 in the inside of body member 11.The crank mechanism portion 60 that this drive division 50 comprises CD-ROM drive motor 51 and connects via reduction gearing portion 52.Cut-out portion 70 possess because the effect of crank mechanism portion 60 and reciprocating slide mass 71 and be located at this slide mass 71 front end 73 and at the cutter 76 of the place ahead on aforementioned guiding road 30 39 advance and retreat.

Below describe each several part in detail.In body member 11, be provided with to insert and be cut off the body member peristome 19 that material W1 uses.In an embodiment, as shown in Figure 3, be to embed handle portion 15 at aforesaid body member peristome 19, in this handle portion 15, form and insert opening 20.When being positioned at and moving branch cutting machine 10 with wheel 17, the handle 15g of aforementioned handle portion 15 is convenient to buttress on the position of this branch cutting machine.Concern as can be known that with the position that is cut off material W1 the insertion angle that is cut off material W1 is limited by handle 15g from handle 15g.

Guiding road 30 be formed at possess aftermentioned send cylinder 91 grades guide portion 35 above, be used for and will be cut off material W1 and guide to guiding the place ahead, road 39 (particularly pressing plate 36) from what aforementioned insertion opening 20 inserted.As a result, be cut off material W1 be not directed into with swinging up and down aforementioned cutter 76 under (Fig. 4), and can be cut off by cutter 76.Aforementioned pressing plate 36 is made of hardware.Pressing plate 36 can not only relax the pressure that produces in guide portion 35 by being cut off material W1 when cutting off, and can also strengthen guiding road 30 (guide portion 35), is convenient to cutter 76 cut-outs and is cut off material W1.

Discharge portion 40 be with cutter 76 cut off produce when being cut off material W1 cut off the position that material W2 discharges towards the below.At this moment, having cut off material W2 just is accommodated in the bag of being hung on the aforementioned hook h (not shown).Among the figure, symbol 45 is demarcation strips.By demarcation strip 45 is set, the impact in the time of can preventing to cut off causes cutting off material W2 and takeoffs and impact drive division 50, slide mass 71 etc.

The CD-ROM drive motor 51 of drive division 50 is selected suitable motor according to driving output.Traditional cuts off by the disintegrating machine of poll while swivel plate is rotated, if not use 1200 to 1500W motor, just can not cut off fully.If be cut off material and utilize reciprocating mode to cut off by crank mechanism portion 60 as in the present invention, just can reduce the load of CD-ROM drive motor, can adopt than small-sized in the past CD-ROM drive motor.By the way, the output of CD-ROM drive motor 51 is 350W.

Reduction gearing portion 52 comprises not shown a plurality of pitch wheels.The rotary power of aforementioned CD-ROM drive motor 51 is passed to crank mechanism portion 60 (particularly crank 61) after slowing down.In the reduction gearing portion 52 of present embodiment, use 5 gears.Aforementioned drive division 50 is fixed on axle 13,13 (Fig. 4 and Fig. 5) by the

fixed part

55,55 of being located at reduction gearing portion 52.

Crank mechanism portion 60 as shown in Figures 3 and 4, by the crank 61 that is connected with reduction gearing portion 52, and the bar 63 that is connected with this crank 61 rotationally via crank-pin 62 form.Bar 63 is connected via lever pin 64 rotationally with cut-out portion 70 (the bar connecting portion 75 of slide mass 71).Certainly, the rotary power of CD-ROM drive motor 51 (rotary power of the crank 61 shown in the arrow d1) is passed to cut-out portion 70 (bar connecting portion 75) via the lever pin 64 of bar 63, makes slide mass 71 reciprocating (arrow d2).

Cut-out portion 70 possesses in the present embodiment: reinforcement plates 72 that slide mass 71 and this slide mass 71 surfaces are strengthened and the cutter 76 that is provided to these reinforcement plate 72 front ends.In aforementioned cut-out portion 70, the

coiling portion

74,74 of slide mass 71 is wound on sliding freely on the

axle

13,13 and makes the slide mass 71 can be reciprocating.

In order to make the whole lightweight of mechanism, the slide mass 71 of present embodiment is used resin system.Slide mass 71 will bear the major part load when cutting off, and therefore must strengthen.For this reason, be close to slide mass 71, can keep to reach the lightweight of cut-out portion 70 simultaneously for the abundant intensity of cutting off load by making reinforcement plate 72.Present embodiment particularly is because reinforcement plate 72 extends to the bar connecting portion 75 (Fig. 6) that contains slide mass 71, so the load that is produced at bar connecting portion 75 when cutting off also can be gained in strength.Because be that cutter 76 is screwed on the reinforcement plate 72 aptly, therefore be convenient to when needs milling cutter 76, it be pulled down again.Certainly, when forming slide mass 71, also can omit reinforcement plate with hardware.

But, as shown in Figure 4, cutter 76 is that 10 degree are to 30 degree for the setting angle φ of pressing plate 36.Adopt this setting angle φ, can alleviate the load that on cutter 76, produces when material W1 tilts to cut off being cut off.

As described in technical scheme 2, as shown in Figure 3, guiding road 30 is that 45 degree are to 75 degree for the angle of the cutter 76 of aforementioned cut-out portion 70.Adopt this angle, can reduce will by guiding road 30 supply be cut off material W1 and cut off the time required cut-out resistance.But, can reduce the cut-out resistance though angle is little, cutting off sectional area required when being cut off material W1 increases, so the slip (reciprocating motion) of cutter 76 (slide mass 71) distance will increase.And on the other hand, if angle is big, then cut off resistance can become greatly, with aforementioned opposite, the slip (reciprocating motion) of cutter 76 (slide mass 71) distance can reduce.

Consider above situation, guiding road 30 for preferably aforesaid 45 degree of the angle θ of the cutter 76 of aforementioned cut-out portion 70 to 75 degree.In illustrated embodiment, this angle design is become 60 degree.

The structure of following key diagram 3 and Fig. 4.The

fixed part

55,55 of guide fixed

part

33,33 and aforementioned drive division 50 is same, and guide portion 35 is fixed on the axle 13,13.The end of

axle

13,13 is inserted and led in

foot

16,16, and utilizes set bolt 14 fixing, and is thus that body member 11 is fixing with foot 16.Among Fig. 3, symbol 80 is pressing members, the 81st, and the flat spring member.The shown 81s of dotted line is pressed on the flat spring member that is cut off on the material W1.In Fig. 4, symbol 98 is interlock hooks, the 56th, and interlock hook lifting unit, the 93rd, steel wire, the 94th, pulley.

In Fig. 3, main switch 18a is the switch driven of control branch cutting machine 10, and employing can make CD-ROM drive motor 51 make the rocker switch of both forward and reverse directions rotation.Aforementioned main switch 18a makes slide mass 71 liftings when also can be used for exchanging cutter 76.CD-ROM drive motor protection switch 18b is with the switch (circuit brake) of circuitry cuts when the electric current that applies on CD-ROM drive motor 51 more than the setting.Limit switch 18c is the switch that CD-ROM drive motor 51 is stopped when body member 11 takes off handle portion 15.

Fig. 5 is the stereogram that takes off body member 11 (left cover body 12a, right cover body 12b).As described in technical scheme 3, above guiding road 30, pressing member 80 is set, this pressing member 80 is made of a plurality of flat spring materials 81 that are arranged side by side along this guiding road direction.Symbol 82 is flat spring member fixed bodies among the figure, and a plurality of flat spring members 81 are fixed on handle portion 15.

At this, suppose that the flat spring member on the pressing member is one, then inserting a plurality ofly when being cut off material, can press major diameter effectively and be cut off material.Be cut off material but can't press other minor diameters, cause these be cut off material easily the guiding road 30 on about (left and right directions among Fig. 6) swing.As a result, being difficult to that other minor diameters are cut off material is directed between cutter 76 and the pressing plate 36 (Fig. 4).

Therefore,, then a plurality ofly be cut off size, the shape that material inserted and be cut off material (branch) and also can not deal with simultaneously having, can press more fully in guiding road 30 being cut off material by a plurality of flat spring members 81 are set as shown like that.Therefore, even a plurality of sizes, the variform material that is cut off are arranged, also guide to easily between cutter 76 and the pressing plate 36 (Fig. 4).

Below with Fig. 5 and Fig. 6 the invention of technical scheme 4 is described.Fig. 6 is the stereogram that takes off body member 11 (left cover body 12a, right cover body 12b) and handle portion 15.As described in technical scheme 4, in the front portion configuration on guiding road 30 since the effect of ratchet mechanism 90 rotate send cylinder 91, the lifting interlock of this ratchet mechanism 90 and slide mass 71 and at every turn rotate predetermined angular.The surface of sending cylinder 91 has ditch 91m, can be involved in transporting the material that is cut off that comes along guiding road 30 during rotation.

This ratchet mechanism 90 comprises: aforementioned cylinder 91, ratchet bar 92, steel wire 93, pulley 94, back-moving spring 95, steel wire cylinder 96, ratchet bar butt body 97, the interlock hook 98 sent.The below action of explanation ratchet mechanism 90.

When crank 61 rotations arrived top dead-centre by bottom dead centre, portion 60 was described in detail in time as the explanation crank mechanism, and slide mass 71 also slides on

axle

13,13 and rises.At this moment the slide block 77 that is installed on the slide mass 71 among Fig. 5 also rises simultaneously.Therefore, slide block 77 and interlock hook 98 butts that are contained in the interlock hook lifting unit 56 rise this interlock hook 98.

On this interlock hook 98, connect steel wire 93, and also be connected with steel wire cylinder 96 through pulley 94.Therefore, steel wire cylinder 96 is spurred and rotates by steel wire 93.The ratchet bar 92 that is connected with steel wire cylinder 96 simultaneously also overcomes the elastic force of back-moving spring 95 and rotates.Make the cylinder 91 of sending that is connected with ratchet bar 92 also rotate predetermined angular thus with action (lifting of the slide mass 71) interlock of steel wire 93 at every turn.

Then, when aforementioned crank 61 rotations arrived bottom dead centre by top dead-centre, slide mass 71 (slide block 77) descended on axle 13,13.At this moment, along with the decline of slide block 77, interlock hook 98 also descend (the interlock hook 98 of seeing Fig. 4).On the steel wire 93 of pulling steel wire cylinder 96, produce lax.As a result because the elastic force of back-moving spring 95, ratchet bar 92 is rotated turn back to ratchet bar butt body 97 till (seeing the back-moving spring 95 of Fig. 6).But, when aforementioned ratchet bar 92 is pushed back, sends cylinder 91 and possess ratchet mechanism (not shown pawl and gear), can not transmit of the rotation of this ratchet bar 92 to Return-ing direction.

Because above ratchet mechanism and effect thereof, rotate sending cylinder 91 and just will being cut off material and being supplied to and guiding the place ahead, road 39 (pressing plate 36) of predetermined angular with the lifting interlock of slide mass 71 at every turn.So, being cut off material roughly in turn and is at every turn cut off by cutter 76 quantitatively.By regulating the length of steel wire 93, can change the anglec of rotation of sending cylinder 91, suitably set the quantity delivered that is cut off material.In addition, though not shown in the figures, also can replace the steel wire of embodiment and crank mechanism portion is installed in addition, and ratchet bar is rotated with the lifting of slide mass.

In an embodiment, as shown in Figure 5, a plurality of flat spring materials 81 are positioned to be sent directly over the cylinder 91, and will be cut off material and send on the cylinder 91 by being pressed in.Therefore the rotary power of sending cylinder 91 can be delivered to effectively and be cut off material, have when a plurality of when being cut off material, can with all be cut off material all be supplied to cutter 76 under.But, the shape of sending the ditch 91m of cylinder surface can suit to design, and except that illustrated parallel ditch, is cut off material for the ease of biting, and also the front end of ditch can be made hook-like.Can also not establish ditch, send cylinder surface but suitable urethane material is wound on.Symbol 32 among Fig. 5 and Fig. 6 is guiding wall portions.Installed inside handle portion 15 in this guiding wall portion.

Claims

1. a branch cutting machine is characterized in that, constitute by body member, drive division, cut-out portion, pressing member,

Described body member have the insertion opening that is used to be cut off material, with continuous guiding road, the pressing plate of being located at guiding the place ahead, road and the discharge portion that is used for cutting off material of this opening,

Described drive division is provided in the described body member, the crank mechanism portion that comprises CD-ROM drive motor and connect through reduction gearing portion,

Described cut-out portion possesses owing to the effect of described crank mechanism portion and reciprocating slide mass and be provided to the front end of this slide mass and the cutter of advancing and retreat with respect to the place ahead, described guiding road,

Described pressing member is made of a plurality of flat spring materials along guiding road direction and row arrangement above described guiding road,

Disposed in the front portion on described guiding road owing to what the effect of ratchet mechanism was rotated and sent cylinder, the lifting interlock of described ratchet mechanism and described slide mass and at every turn rotate predetermined angular,

Described guiding road for the angle of the cutter of described cut-out portion be 45 degree to 75 degree, described cutter is that 10 degree are to 30 degree for the setting angle of the pressing plate of being located at the place ahead, described guiding road.