CN102783372B - Two-stage and two-lever hyperbolic labor-saving ramulus mori clippers - Google Patents
Two-stage and two-lever hyperbolic labor-saving ramulus mori clippers Download PDFInfo
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- CN102783372B CN102783372B CN201210271215.8A CN201210271215A CN102783372B CN 102783372 B CN102783372 B CN 102783372B CN 201210271215 A CN201210271215 A CN 201210271215A CN 102783372 B CN102783372 B CN 102783372B
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- China
- Prior art keywords
- anvil
- shearing
- pivot
- cutter
- shank portion
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Abstract
A pair of two-stage and two-lever hyperbolic labor-saving ramulus mori clippers comprises an anvil blade and a shear knife, wherein the shear knife comprises a shearing handle and a shear knife head, the shearing handle is pivotally connected with the shear knife head through a first pivot, the anvil blade is pivotally connected with the shear knife head through a second pivot, the shearing handle forms a first gear part at one end adjacent to the first pivot, the anvil blade form a second gear part adjacent to the second pivot, and the first gear part and the second gear part are meshed with each other. Force exerted on the shearing handle increases gradually through the first pivot and the second pivot, so that a larger shearing force is provided for the shear knife head, and coarse branches can be clipped by using a smaller force.
Description
Technical field
The present invention relates to a kind of scissors of pollard, belong to cutting implement field.
Background technology
Pruner is used for pollard such as ramulus mori, and its section sheared is smooth, so cut-off part easily heals, so pruner is widely used in gardens and agriculture field.Usually, thick branch saw is sawed-off, and withe bar pruner is cut off.Current due to labour in short supply, some employing cuttves are cut.Although cut branch speed with cutter, can cause the branch skin breakage stayed, section is uneven, therefore cut-off part is difficult to healing; Saw not only speed with saw slow, and section is also rough, therefore the also difficult healing of thick branch section; And the pruner of prior art is because of effort, is difficult to cut and cuts down thick branch.
Summary of the invention
The object of this invention is to provide a kind of pruner, solve in prior art the problem using pruner to cut to cut down thick branch effort.
To achieve these goals, the invention provides following technical scheme:
A kind of pruner, comprise anvil cutter and shear knife, wherein shear knife comprises shearing handle and shearing cutter head, shear handle to be relative to each other connected pivotly by the first pivot with shearing cutter head, anvil cutter and shearing cutter head are then relative to each other connected pivotly by the second pivot, shear handle and be formed with the first gear parts in one end of contiguous first pivot, anvil cutter is formed with the second gear parts of contiguous second pivot, and the first gear parts and the second gear parts engage each other.
Preferably, the length wherein shearing handle is more than 10 times of shearing cutter head length.
Preferably, described shearing cutter head has shearing point, and the distance between the first pivot and the second pivot is greater than the distance between the second pivot and the shearing point of shearing cutter head.
Preferably, described anvil cutter is divided into substantially straight anvil shank portion and the anvil tool bit part of hook solid by the second pivot.
Preferably, the anvil tool bit part of the hook solid of anvil cutter approximately forms the angle of about 100 degree.
Preferably, the anvil tool bit part of described anvil cutter is in the inner side of anvil shank portion extended line.
Preferably, wherein the anvil shank portion of anvil cutter is also provided with dismountable sleeve pipe, and sleeve pipe has and adds broad side surface to adapt to abut the waist of people.
Preferably, the lifting rope be connected with the anvil shank portion of anvil cutter is also comprised.
Preferably, wherein the side of whole pruner limited by two planes, and the angle of described two planes is about 170 degree.
At least there is following technique effect in the embodiment of the present invention:
1) shear handle to be relative to each other connected pivotly by the first pivot with shearing cutter head, anvil cutter and shearing cutter head are then relative to each other connected pivotly by the second pivot, shear handle and be formed with the first gear parts in one end of contiguous first pivot, anvil cutter is formed with the second gear parts of contiguous second pivot, and the first gear parts and the second gear parts engage each other.Put on and shear the power of handle and increased gradually by the first pivot and the second pivot, thus provide larger shearing force for shearing cutter head, thick branch can be cut off by less power.
2) the anvil tool bit part of hook solid, is conducive to preventing branch from sliding, thus anvil tool bit part branch being stuck in hook solid is sheared it.
3) the anvil tool bit part of hook solid is in the inner side of anvil shank portion extended line, namely anvil shank portion curves inwardly, anvil shank portion can be reduced when anvil cutter is identical with shear knife opening angle and shear the distance of opening between handle, being convenient to when holding or arrange lifting rope, be worn at loins operation.
4) length shearing handle is more than 10 times of shearing cutter head length, thus more laborsaving.
5) side of whole pruner limited by two planes, and the angle of two planes is about 170 degree, decreases the angle of bending over facing upward body on the one hand, facilitate operative, section can be made on the other hand to be circular, instead of the angle be tiltedly cut into, reduce area of fracture, accelerate healing time.
6) anvil shank portion is arranged with dismountable sleeve pipe, and sleeve pipe has and adds broad side surface to adapt to abut the waist of people, and when can reduce like this to shear, anvil shank portion extrudes the pain caused to waist.Lifting rope is carried on the arm piggyback, thus can free hand to buttress the branch cut off, saved the time of again picking up again after cutting off, saved labour.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the shear knife structural representation of the embodiment of the present invention;
Fig. 3 is the anvil knife structure schematic diagram of the embodiment of the present invention;
Fig. 4 is the first gear parts and the second gear parts mesh schematic representation of the embodiment of the present invention;
Fig. 5 is anvil tool bit part and the anvil shank portion position relationship schematic diagram of the embodiment of the present invention;
Fig. 6 is lifting rope and the anvil shank portion position relationship schematic diagram of the embodiment of the present invention;
Fig. 7 is the schematic diagram of the higher branch of pruning of the embodiment of the present invention;
Fig. 8 is the schematic diagram of the lower branch of pruning of the embodiment of the present invention;
Fig. 9 is the labor-saving structure schematic diagram of two pivots of the embodiment of the present invention;
Figure 10 is the labor-saving structure schematic diagram of the growth arm of force of the embodiment of the present invention.
Number in the figure is as follows:
1-anvil cutter, 101-second gear parts, 102-anvil shank portion, 103-anvil tool bit part;
2-shear knife, 201-shears handle, 202-shearing cutter head, 203-first gear parts;
3-first pivot;
4-second pivot;
5-sleeve pipe;
6-lifting rope;
O
1-the first fulcrum;
O
2-the second fulcrum;
A-resistance point;
B-anvil cutter power point;
C-first order lever power point;
D-second level lever power point.
Label identical in all of the figs indicates similar or corresponding feature or function.
Understand the present invention for the ease of clearer, the calculating variable used in embodiment is enumerated as follows by spy:
O
1a-resistance arm;
O
1b-anvil cutter power arm;
O
1c-shear knife power arm;
O
2c-second level lever resistance arm;
O
2d-second level lever moving arm;
F
1-resistance;
F
2-anvil cutter power;
F
3-shear knife power;
F
4-shearing force.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, specific embodiment is described in detail.It should be noted that, following description only relates to technical scheme of the present invention and the technology directly related with this technical scheme.For other basic known technology related to the present invention, omitted herein.
As shown in Figure 1, a kind of pruner, comprises anvil cutter 1 and shear knife 2.
As shown in Figure 2, shear knife 2 comprises shears handle 201 and shearing cutter head 202, shears handle 201 and is relative to each other connected pivotly by the first pivot 3 with shearing cutter head 202.
As shown in Figure 1, anvil cutter 1 is relative to each other connected by the second pivot 4 pivotly with shearing cutter head 202.
As shown in Figure 2, shear handle 201 and be formed with the first gear parts 203 in one end of contiguous first pivot 3.
As shown in Figure 3, anvil cutter 1 is formed with the second gear parts 101 of contiguous second pivot 4.
As shown in Figure 4, the first gear parts 203 and the second gear parts 101 engage each other.
As a kind of preferred version, the length shearing handle 201 is more than 10 times of shearing cutter head 202 length.As further preferred, shearing cutter head 202 has shearing point, distance between first pivot 3 and the second pivot 4 is greater than the distance between the second pivot 4 and the shearing point of shearing cutter head 202, and described shearing point is the most protruding point in the shear blade of shearing cutter head 202.
As a kind of preferred version, described anvil cutter 1 is divided into substantially straight anvil shank portion 102 and the anvil tool bit part 103 of hook solid by the second pivot 4.
As further preferred, the anvil tool bit part 103 of the hook solid of anvil cutter 1 approximately forms the angle of about 100 degree, and in the present embodiment, described left and right is the scope of upper and lower 20 degree.
As further preferred, the anvil tool bit part 103 of described anvil cutter 1, in the inner side of anvil shank portion 102 extended line, is namely partial to the direction of shearing cutter head 202.
As further preferred, wherein the anvil shank portion 102 of anvil cutter 1 is also provided with dismountable sleeve pipe 3, and sleeve pipe 3 has and adds broad side surface to adapt to abut the waist of people.As further preferred, also comprise the lifting rope 4 be connected with the anvil shank portion 102 of anvil cutter 1.
As a kind of preferred version, wherein the side of whole pruner limited by two planes, and the angle of described two planes is about 170 degree, and in the present embodiment, left and right is the scope of upper and lower 5 degree.
According to above-mentioned each technical scheme, principle of the present invention and effect are described below:
1. anti-outer sliding anvil tool bit part
Usually, in shear history, shearing cutter head 202 is protruding, and anvil tool bit part 103 caves in into the arc-shaped of about 130 degree (being no more than 5 degree up and down), but when shearing, pruner easily slides, make branch away from the second pivot 4 (being equivalent to resistance arm increase) on the one hand, increase shearing force; Branch easily skids off anvil tool bit part 103 on the other hand.Anvil tool bit part 103 arc angle reduces by the present invention for this reason, tip is slightly inwardly curved, namely the anvil cutter 1 described in technique scheme is divided into substantially straight anvil shank portion 102 and the anvil tool bit part 103 of hook solid by the second pivot 4, at this, anvil tool bit part 103 changes hook solid into by arc-shaped, and hook solid comprises the circular arc of angle reduction and slightly inflexed tip.Further, the anvil tool bit part 103 limiting hook solid approximately forms the angle of about 100 degree.Thus, during shearing, anvil tool bit part 103 cover of hook solid vises branch, and branch can not be deviate from, thus overcomes the problem of outer cunning, and more laborsaving.
2. curve inwardly the anvil shank portion shortening and open distance
Although the length shearing handle 201 is more than 10 times of shearing cutter head 202 length, can be more laborsaving, but because anvil shank portion 103 is longer thereupon, anvil tool bit part 103 arc angle reduces, tip is slightly inwardly curved, shear handle 201 when causing shearing to open apart from excessive with anvil shank portion 103, be not easy to operation.To this, the present invention is substantially straight by directly changing into by anvil shank portion 103, and according to the anvil tool bit part 103 of anvil cutter 1 in the inner side of anvil shank portion 102 extended line, substantially straight anvil shank portion 103 slightly curves inwardly, as shown in Figure 3, sweep is positioned near the second pivot 4.This kind of design, when shearing handle 201 and being identical with the opening angle of anvil shank portion 103, is sheared handle 201 and can be shortened with anvil shank portion 103 spacing, thus be easy to operate.
3. increase the labor-saving structure of the arm of force
In prior art, shear the length of handle 201 be the 2-3 of shearing cutter head 202 length doubly (in average 2.5 times), then shear knife power is the 2/1-3/1 of shear knife resistance, cuts to cut down tiny branch workman and operate all day and can also bear, thick branch cut cut down just very painstaking.For reducing the labour intensity of workman, shearing handle 201 increases by the present invention, then the anvil shank portion 102 matched with it also increases.
As shown in Figure 10, for anvil cutter: the resistance point a shearing branch, fulcrum is the first fulcrum o
1, grip and anvil cutter power point b, resistance arm is o
1a, anvil cutter power arm is o
1b, resistance arm o
1a length is 40mm, and anvil cutter power arm is o
1b length is 540mm.If the resistance shearing branch is f
1, anvil cutter power is f
2, according to lever principle, f
1: f
2=540: 40=13.5/1.With 2/1-3/1 times that prior art shear knife power is shear knife resistance, average 2.5/1 compares, more laborsaving 5.4 times (13.5/2.5=5.4).
4. the labor-saving structure of two pivot
For making shearing more laborsaving, shear knife 2 adopts two pivot to form double lever structure.
As shown in Figure 9, first order lever is with the first fulcrum o
1for fulcrum, power point is first order lever power point c, and resistance arm is o
1a, shear knife power arm is o
1c, resistance arm o
1a length is 40mm, and shear knife power arm is o
1c length is 68mm, if the resistance shearing branch is f
1, shear knife power is f
3, according to lever principle, f
1: f
3=68: 40=1.7/1.
Second level lever is with the local interface point i.e. second fulcrum o of the first gear parts 203 and the second gear parts 101
2for fulcrum, shearing force f
4for power, second level lever resistance is and f
3the power that equal and opposite in direction direction is contrary, second level lever power point d, second level lever resistance arm is o
2c length is 40mm, and second level lever moving arm is o
2d length is 500mm, according to lever principle, and f
3: f
4=o
2d:o
2c=500:40=12.5/1.
For double lever structure, f
3f
412.5 times, due to f
1f
31.7 times, then f
1f
421.25 times (1.7 × 12.5), i.e. the shearing force f of shear knife 2
41/21.25 of shearing resistance, so all only need less power just can easily cut off when shearing the thick branch of 30-40mm.
5. transverse curvature be suitable for height dry mulberry tree cut the double-pole cut down
Because the height of branch differs greatly, low is liftoff less than 150mm, high liftoff more than 1200mm, differs 8 times.Often need when low branch is cut and cut down to bend over even to reach 90 °, operate extremely inconvenient, and people is had a pain in the back; People can be reduced with long pruner (lengthen and shear handle 201) to bend over, but now haircut and branch are not vertical direction, fracture and ground not parallel, tiltedly be cut into an angle, increase area of fracture, be unfavorable for that callus covers with the xylem of fracture, meet rainwater and easily penetrate into limb, easily make xylem rotten if things go on like this.
For this reason, the plane that scissors cutter head 202, anvil tool bit part 103 form by the present invention and the plane shearing handle 201, anvil shank portion 102 forms change cross one another two planes into by a plane, angle between two planes is about 170 °, when cutting eminence branch as shown in Figure 7, when cutting lower branch as shown in Figure 8, by pruner turn-over (overturning 180 °), or the needs only cut eminence branch according to various places or only cut eminence branch bend.
6. reduce the lifting rope collected and cut branch operation
Usual long pruner all needs bimanualness, and the branch cut so is often scattered everywhere, also needs to spend manually to go to collect to collect again.
To this, anvil shank portion 102 is also provided with dismountable sleeve pipe 5, sleeve pipe 5 has and adds broad side surface to adapt to abut the waist of people, namely sleeve pipe 5 to add broad side surface vertical with wide of anvil shank portion 102, anvil shank portion 102 hangs and is worn at loins, and the broad side surface that adds of sleeve pipe 5 contacts with loins, contact surface is larger, join a leather packing again, pad in loins, waist can bear pressure when cutting thick branch completely.Now carrying out shear action, not needing with holding anvil shank portion 102, thus left hand can be vacateed hold and pinch branch, put together after cutting several branches, so just can reduce collection and cut branch recruitment.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. a pruner, comprises anvil cutter and shear knife, and wherein shear knife comprises shearing handle and shearing cutter head, it is characterized in that:
Shear handle to be relative to each other connected pivotly by the first pivot with shearing cutter head, anvil cutter and shearing cutter head are then relative to each other connected pivotly by the second pivot, shear handle and be formed with the first gear parts in one end of contiguous first pivot, anvil cutter is formed with the second gear parts of contiguous second pivot, and the first gear parts and the second gear parts engage each other;
The length shearing handle is more than 10 times of shearing cutter head length;
Described shearing cutter head has shearing point, and the distance between the first pivot and the second pivot is greater than the distance between the second pivot and the shearing point of shearing cutter head;
Described anvil cutter is divided into substantially straight anvil shank portion and the anvil tool bit part of hook solid by the second pivot, and the anvil tool bit part of the hook solid of anvil cutter forms the angle of about 100 degree;
The anvil shank portion of described anvil cutter curves inwardly relative to anvil tool bit part;
The anvil shank portion of anvil cutter is also provided with dismountable sleeve pipe, and sleeve pipe has and adds broad side surface to adapt to abut the waist of people; And
The side of whole pruner limited by two planes, and the angle of described two planes is about 170 degree,
Wherein this pruner also comprises the lifting rope be connected with the anvil shank portion of anvil cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210271215.8A CN102783372B (en) | 2012-07-31 | 2012-07-31 | Two-stage and two-lever hyperbolic labor-saving ramulus mori clippers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210271215.8A CN102783372B (en) | 2012-07-31 | 2012-07-31 | Two-stage and two-lever hyperbolic labor-saving ramulus mori clippers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102783372A CN102783372A (en) | 2012-11-21 |
| CN102783372B true CN102783372B (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210271215.8A Expired - Fee Related CN102783372B (en) | 2012-07-31 | 2012-07-31 | Two-stage and two-lever hyperbolic labor-saving ramulus mori clippers |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4023559A1 (en) * | 1990-07-25 | 1992-01-30 | Gardena Kress & Kastner Gmbh | Garden secateurs or branch-pruner - has gearing-down element between actuating handles and shears |
| GB2344783A (en) * | 1998-12-16 | 2000-06-21 | Lin Yu Tang | Gardening shears |
| US6345446B1 (en) * | 2000-05-16 | 2002-02-12 | Shoei-Shin Huang | On gardening shears |
| CN1672489A (en) * | 2004-02-27 | 2005-09-28 | 菲斯卡斯品牌芬兰公司 | Pruning shears or corresponding cutters |
| CN201238499Y (en) * | 2008-05-23 | 2009-05-20 | 上海沃施园艺用品制造有限公司 | Toothed wheel type scissor |
| CN202680046U (en) * | 2012-07-31 | 2013-01-23 | 四川省农业科学院蚕业研究所 | Pruning shear |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201742754U (en) * | 2010-05-10 | 2011-02-16 | 江苏科技大学 | Cutting mulberry shoot scissors |
| CN202043477U (en) * | 2011-03-17 | 2011-11-23 | 成都花博卉园艺有限公司 | Novel pruning scissors |
-
2012
- 2012-07-31 CN CN201210271215.8A patent/CN102783372B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4023559A1 (en) * | 1990-07-25 | 1992-01-30 | Gardena Kress & Kastner Gmbh | Garden secateurs or branch-pruner - has gearing-down element between actuating handles and shears |
| GB2344783A (en) * | 1998-12-16 | 2000-06-21 | Lin Yu Tang | Gardening shears |
| US6345446B1 (en) * | 2000-05-16 | 2002-02-12 | Shoei-Shin Huang | On gardening shears |
| CN1672489A (en) * | 2004-02-27 | 2005-09-28 | 菲斯卡斯品牌芬兰公司 | Pruning shears or corresponding cutters |
| CN201238499Y (en) * | 2008-05-23 | 2009-05-20 | 上海沃施园艺用品制造有限公司 | Toothed wheel type scissor |
| CN202680046U (en) * | 2012-07-31 | 2013-01-23 | 四川省农业科学院蚕业研究所 | Pruning shear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102783372A (en) | 2012-11-21 |
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