CN101904244B - Hay knife for lawn hay mower without tool holder - Google Patents
Hay knife for lawn hay mower without tool holder Download PDFInfo
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- CN101904244B CN101904244B CN201010227439XA CN201010227439A CN101904244B CN 101904244 B CN101904244 B CN 101904244B CN 201010227439X A CN201010227439X A CN 201010227439XA CN 201010227439 A CN201010227439 A CN 201010227439A CN 101904244 B CN101904244 B CN 101904244B
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- key
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- knife
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/73—Cutting apparatus
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Abstract
The invention provides improvement on a cutting mechanism of a lawn hay mower, which is used for a knife without an independent tool holder of a lawn hay mower so as to be called the hay knife for the lawn hay mower without the tool holder. The invention can reduce components and lower the cost, can lighten the weight and reduce the consumption power, and has a safeguard function. In the invention, the adopted technical method comprises the following steps of: directly punching a steel plate of the knife without a heavy tool holder so as to mould for connection; or producing the hay knife by means of welding and bonding. Anyway, the knife without the independent tool holder is formed by combining the tool holder and the knife into a whole, which is a substantially skillful combination of two kinds of joining ways. The knife is also provided with a safeguard key, and the invention provides various types of the hay knives.
Description
Technical field
The cutter of not wanting independent tool rest that the present invention relates to a kind of hay knife, especially hay mower of the hay mower that cuts the grass on a lawn for places such as garden, park and road next doors is called the hay mower hay knife without tool rest.
Background technology
Hay mower is widely used in sometimes not mowing from walking the mode of sometimes certainly not walking by people's hobby is selected.The operation pedestrian spurs from walking control crank, by steel wire rope and driving lever, makes clutch on-off, so that sometimes from walking sometimes not from walking.The driven wheel speed-reducing clutch of the traverse gear of prior art is to be driven by the belt pulley that is contained in engine spindle.And the engine spindle mowing-apparatus, such as Fig. 5. shown in the engine spindle mowing-apparatus explosive view, by drive pulley (11), cushion cover (12), key (13), tool rest (14), original cutter (15), large pressure pad circle (16), fastening bolt (17) forms; Generally speaking, tool rest is absolutely necessary.The conventional used part of mowing-apparatus is more more expensive; Also heavier, rotary inertia is larger, and power hungry is more; And cutter is to be rigidly connected, and when running into foreign material such as water pipe, is very stiff and demanding, does not have security protection.
Summary of the invention
For the used part of mowing-apparatus of the routine that overcomes the hay mower prior art more, rotary inertia is larger, power hungry is more, and cutter is to be rigidly connected, and does not have the shortcoming of security protection, the invention provides a kind of improvement of hay mower cutting mechanism, it is the cutter of not wanting independent tool rest for hay mower, be called the hay mower hay knife without tool rest, one can make part reduce ， Zao Price reduces; Two can make weight saving, and consumed power reduces; Three can make it have the function of security protection.
The present invention solves the technical method that its technical problem takes:
This is the in fact ingenious combination of two class junctures, saves exactly heavy tool rest, and directly punching press can be for the moulding that connects on the steel plate of cutter; Or glued joint with welding and to make, be the cutter of not wanting independent tool rest in a word, be tool rest and cutter are integrated, also be provided with the key of security protection on it, can be generically and collectively referred to as the hay mower hay knife without tool rest.
A kind of engine spindle mowing-apparatus, particularly without the hay mower hay knife of tool rest, on the steel plate of cutter, the riding position zone at engine spindle and fastening bolt (17) is provided with pit (2), key (1), keyway (3), such as Fig. 1, Fig. 3, Fig. 4, Figure 10 and shown in Figure 11; It is characterized in that: the internal diameter of described pit (2) equals or tolerance is slightly larger than the external diameter of engine spindle, and the centre of the bottom of described pit (2) is porose, in order to pass fastening bolt (17); The band of position of laying key at the edge of described pit (2), be provided with key (1), it is characterized in that: described key (1) is rectangle, from the steel plate of cutter, utilize material and punching press bending and moulding, or make with welding or splicing, and the two sides of its square-section, at least one side, installation and sticker are in the keyway of engine spindle; The root of described key (1) particularly; namely the steel plate of key (1) and cutter and with the connecting portion of the band of position of laying key at the edge of described pit (2); the crack arrest groove that the punching press bending is arranged; in order to correctly select suitable shear strength; so that can mow by key, again can be when running into water pipe key the root overloading and protect.Described brief and concise being described below of method of correctly selecting suitable shear strength: the root of making described key (1) can be with the crack arrest channel process of less important wall.Less important wall refers to be connected to the panel beating wall on other thin-walled, can be counted as the subitem of main wall.The seamed crack arrest groove of the crack arrest groove of the root of key without the crack arrest groove, stretches the crack arrest groove, rectangle crack arrest groove, and Long Circle crack arrest groove preferably selects seamed crack arrest groove.Suggestion is given tacit consent to equation with computer bender and PROE, available system, with Y factor or the K factor; Or with predefined bending table; Or with the customization the bending table; Consider material behavior and compensation by system.If the bending table with customization is not assigned to sheet metal component, available following formula calculates length of run:
L＝(π/2×R+Y×T)×θ/90
In the formula, L is the length of run of key; R is the inner radius of key; Y factor this desirable 0.5; T is steel plate thickness, and it is prominent protruding to beat edge break and many places, can improve the modulus of the mechanics of materials, reduces steel plate thickness; θ is bending angle, can choose between 80-100.Y factor and the K factor are by the defined part constant in the position of the neutral bending line of the relative thickness of sheet metal component material.The K factor is distance (δ) from neutral bending line to inboard radius bend and the ratio the material thickness (T), and its formula is K=δ/T.Y factor is the length of neutral bending line and the ratio between the material thickness (T), and its formula is Y=Kx (pi/2).Can accessing text and HTML sheet metal component report and the precision of sheet metal component is set.Select suitable shear strength method two are the methods of facts have proved, root in described key (1), namely the steel plate of key (1) and cutter and with the connecting portion of the band of position of laying key at the edge of described pit (2), the nothing wheel is the crack arrest groove that the punching press bending is arranged, or make with welding or splicing, if facts have proved that still its intensity is too high, then take material reducing to cut out method, namely at the root of its key, dig material the root portion cross section of key is attenuated, to select suitable shear strength.The feature of described keyway (3) is, the band of position of laying common key (13) at the edge of described pit (2) is provided with the same wide keyway of keyway with engine spindle, and this is for subsequent use for some occasion, when for example adding woodruff key, when for example adding spare key.The steel plate middle part of cutter, it is prominent protruding in to strengthen attenuate to beat edge break and many places.
As different several styles, as shown in Figure 2, can be described as embodiment 1, it is characterized in that being provided with key (1) at the connecting portion of the band of position of laying key at the edge of described pit (2), be provided with described keyway (3) at opposite side; The centre of described pit is provided with through hole (18).
As different several styles, as shown in Figure 6, can be described as embodiment 2, it is characterized in that (being a side at least) is provided with keyway (4) in both sides at the connecting portion of the band of position of laying key at the edge of described pit (2); The centre of described pit is provided with through hole (18).
As different several styles, as shown in Figure 7, can be described as embodiment 3, it is characterized in that being provided with inside key prominent (5) in a side of the connecting portion of the band of position of laying key at the edge of described pit (2); The centre of described pit still is provided with through hole (18).
As different several styles, as shown in Figure 8, can be described as embodiment 4, it is characterized in that saving pit, and at the connecting portion of the band of position of laying key at the edge of former described pit (2), be provided with keyway square hole (6) in a side; Still be provided with through hole (18) in the centre of described former pit.
As different several styles, as shown in Figure 9, can be described as embodiment 5, it is characterized in that saving pit, and at the connecting portion of the band of position of laying key at the edge of former described pit (2), be provided with the keyway square hole in a side, be provided with described key (7) at opposite side, this key or fixing for example welding and stickup, or the in addition key of dress of living, particularly described key part have cuts down to be suitable for the requirement of required security intensity; Still be provided with through hole (18) in the centre of described former pit.
The invention has the beneficial effects as follows: without the hay mower hay knife of tool rest, be the ingenious combination of two class junctures, save heavy tool rest, one can make part reduce ， Zao Price reduces; Two can make weight saving, and consumed power reduces; Three can make it have the function of security protection.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic three dimensional views that the part of cutter of the present invention is amplified.
Fig. 2 is the two-dimensional representation of embodiments of the invention 1.
Fig. 3 is schematic three dimensional views of the present invention.
Fig. 4 is the schematic three dimensional views at another visual angle of the present invention.
Fig. 5 is original engine spindle mowing-apparatus explosive view, as shown in the figure, and by drive pulley (11), cushion cover (12), key (13), tool rest (14), original cutter (15), large pressure pad circle (16), fastening bolt (17) forms.
Fig. 6 is the two-dimensional representation of embodiments of the invention 2.
Fig. 7 is the two-dimensional representation of embodiments of the invention 3.
Fig. 8 is the two-dimensional representation of embodiments of the invention 4.
Fig. 9 is the two-dimensional representation of embodiments of the invention 5.
Figure 10 is midship section schematic diagram of the present invention.
Figure 11 is the local enlarged diagram at the middle part of midship section of the present invention.
Extremely shown in Figure 11 such as Fig. 1, among the figure,
1. be first key;
2. be pit;
3. be the first keyway;
4. be the second keyway;
5. be that key is prominent;
6. be the keyway square hole;
7. be the second key;
18. be through hole.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Improving the engine spindle mowing-apparatus, at first is the hay mower hay knife of making without tool rest.The preferred material that is fit to the steel plate of cutter processed, it is prominent protruding to beat edge break and many places, in order to improve the modulus of the mechanics of materials, reduces steel plate thickness; For example half annealing and modifier treatment of suitable front thermal treatment also to be arranged, drawing and forming or thermoforming, again punch forming, make pit (2), key (1), keyway (3) equals the internal diameter of described pit (2) or tolerance is slightly larger than the external diameter of engine spindle.Carrying out normalizing and timeliness processes again; And polishing correction and oiling or blackening process.The centre of the bottom of described pit (2) is porose, so that pass fastening bolt (17); If the key of the type that has is longer, be again to utilize steel plate material and direct punching press bending forming, then allowing the hole of centre of the bottom of described pit (2) is the combination bore of circular hole and oblong aperture.If 22.2mm, and fastening bolt (17) is 3/8-24UNF2B to hay mower with the external diameter of engine spindle, and the hole in the middle of then is that circular hole is got 8-9, or with the combination bore of oblong aperture; Key is wide to be 4.775mm because oblong aperture wide approximates again, so the combination bore of circular hole and oblong aperture is feasible.The key (1) that the band of position of laying key at the edge of described pit (2) is provided with, also available welding or splicing are made.The two sides of its square-section, at least one side, installation and sticker are in the keyway of engine spindle; Please noting said at least one side here, is as usual, and namely observing hay knife by observer's eye to the earth's surface is in the direction of the clock, and unique direction rotation, so key only has a side to play a driving role.The root of described key (1) particularly; namely the steel plate of key (1) and cutter and with the connecting portion of the band of position of laying key at the edge of described pit (2); the crack arrest groove that the punching press bending is preferably arranged; in order to test out suitable shear strength; so that can mow by key, again can be when running into water pipe key the root overloading and protect.Suggestion is revised after the sampling of the testing stand of special use is surveyed. and the described method of correctly selecting suitable shear strength is brief and concise the introduction, repeated no more.Select suitable shear strength method two are the methods of facts have proved, root in described key (1), namely the steel plate of key (1) and cutter and with the connecting portion of the band of position of laying key at the edge of described pit (2), the nothing wheel is the crack arrest groove that the punching press bending is arranged, or make with welding or splicing, if facts have proved that still its intensity is too high, then take material reducing to cut out method, namely at the root of its key, dig material the root portion cross section of key is attenuated, to select suitable shear strength.Described keyway (3) is the band of position of laying common key (13) at the edge of described pit (2), the same wide keyway of keyway with engine spindle is set, this is for subsequent use for some occasion, when for example adding woodruff key, when for example adding spare key.On engine spindle, for the type of walking without oneself, the hay mower hay knife without tool rest of the present invention of directly packing in the keyway, make key (1) to the main shaft keyway, described pit (2) is contained on the main shaft, penetrate again fastening bolt (17), notice that bolt commonly used all is anti-silk rather than positive silk.On engine spindle, for having from the type of walking, to pack into first in the keyway its upper end be arc tips with the main shaft keyway on the arc end match, and the main pulley key that its lower end and key (1) join, the main pulley of then packing into, reinstall the above-mentioned hay mower hay knife without tool rest of the present invention, make key (1) to the main shaft keyway, described pit (2) is contained on the main shaft, penetrate again fastening bolt (17), notice that bolt commonly used all is anti-silk rather than positive silk.
As different several styles, as shown in Figure 2, can be described as embodiment 1, it is characterized in that being provided with key (1) at the connecting portion of the band of position of laying key at the edge of described pit (2), be provided with described keyway (3) at opposite side; The centre of described pit is provided with through hole (18).Its key (1) can face toward the main shaft keyway, and its keyway (3) is for subsequent use; For example when adding woodruff key, the customer requirement that has to use it; For example after key (1) is damaged, can add again spare key in keyway (3), make repeatedly regeneration of cutter.
As different several styles, as shown in Figure 6, can be described as embodiment 2, it is characterized in that (being a side at least) is provided with keyway (4) in both sides at the connecting portion of the band of position of laying key at the edge of described pit (2); The centre of described pit is provided with through hole (18).Its cutter itself be not with key, need put in addition key and come facing to main shaft keyway and its keyway (4), with one, another is for subsequent use; For example when adding woodruff key, the customer requirement that has to use it; For example after key (1) is damaged, can add again spare key in keyway (3), make repeatedly regeneration of cutter.
As different several styles, as shown in Figure 7, can be described as embodiment 3, it is characterized in that being provided with inside key prominent (5) in a side of the connecting portion of the band of position of laying key at the edge of described pit (2); The centre of described pit still is provided with through hole (18).The inside key prominent (5) of its cutter own is exactly the effect of key, does not need to put in addition key and comes facing to the main shaft keyway; Also can be used as improvement, add again another keyway for subsequent use;
As different several styles, as shown in Figure 8, can be described as embodiment 4, it is characterized in that saving pit, and at the connecting portion of the band of position of laying key at the edge of former described pit (2), be provided with keyway square hole (6) in a side; Still be provided with through hole (18) in the centre of described former pit.Its cutter itself be not with key, need put in addition key and come facing to main shaft keyway and its keyway (6); Cutter itself do not make pit, the centre still is provided with through hole (18), makes cutter be flattened on spindle end, makes through hole (18) aim at the spindle end centre bore, also must put large pressure pad circle (16), puts fastening bolt (17) again.
As different several styles, as shown in Figure 9, can be described as embodiment 5, it is characterized in that saving pit, and at the connecting portion of the band of position of laying key at the edge of former described pit (2), be provided with the keyway square hole in a side, be provided with described key (7) at opposite side, this key or fixing for example welding and stickup, or the in addition key of dress of living, particularly described key part have cuts down to be suitable for the requirement of required security intensity; Still be provided with through hole (18) in the centre of described former pit.Its cutter itself or be not with key, need put in addition key and come facing to main shaft keyway and its keyway (6); Or the band key of its cutter own is namely gone out key protruding (7); Blade itself to be provided with the keyway square hole for subsequent use to do; Cutter itself do not make pit, the centre still is provided with through hole (18), makes cutter be flattened on spindle end, makes through hole (18) aim at the spindle end centre bore, also must put large pressure pad circle (16), puts fastening bolt (17) again.Notice that bolt commonly used all is anti-silk rather than positive silk.Transfer at last the test of two point of a knife balances and false pin to get final product.
Claims (10)
1. hay mower hay knife without tool rest is provided with pit (2), first key (1), the first keyway (3) at the steel plate of cutter; There is through hole (18) centre of the bottom of described pit (2) in order to pass fastening bolt (17); The band of position of laying key at the edge of described pit (2) is provided with first key (1); Described first key (1) is rectangle, is to utilize material and punching press bending and moulding from the steel plate of cutter, or make with welding or splicing; It is characterized in that: the root of described first key (1), namely the steel plate of first key (1) and cutter and with the connecting portion of the band of position of laying key at the edge of described pit (2), the crack arrest groove of punching press bending is arranged.
2. a kind of hay mower hay knife without tool rest according to claim 1, it is characterized in that: the root of described first key (1) has the crack arrest groove, and this crack arrest groove is seamed crack arrest groove.
3. a kind of hay mower hay knife without tool rest according to claim 1 is characterized in that: the root of described first key (1) is made with welding.
4. a kind of hay mower hay knife without tool rest according to claim 1, it is characterized in that: the root portion cross section of described first key (1) attenuates.
5. a kind of hay mower hay knife without tool rest according to claim 1, it is characterized in that: the connecting portion in the band of position of laying key at the edge of described pit (2) is provided with first key (1), and opposite side is provided with described the first keyway (3); The centre of the bottom of described pit (2) is provided with through hole (18).
6. a kind of hay mower hay knife without tool rest according to claim 1 is characterized in that: the steel plate section of cutter is equipped with edge break and many places are prominent protruding.
7. hay mower hay knife without tool rest, steel plate at cutter is provided with pit (2), the second keyway (4), through hole (18), it is characterized in that: the both sides at the connecting portion of the band of position of laying key at the edge of described pit (2) are equipped with the second keyway (4); The centre of described pit (2) is provided with through hole (18).
8. hay mower hay knife without tool rest, be provided with pit (2), the second key prominent (5), through hole (18) at the steel plate of cutter, it is characterized in that: in a side of the connecting portion of the band of position of laying key at the edge of described pit (2) inside key dash forward (5) is arranged; The centre of described pit (2) still is provided with through hole (18).
9. hay mower hay knife without tool rest, steel plate at cutter is provided with pit (2), keyway square hole (6), through hole (18), it is characterized in that: the side at the connecting portion of the band of position of laying key at the edge of described pit (2) is provided with keyway square hole (6); The centre of described pit (2) still is provided with through hole (18).
10. hay mower hay knife without tool rest, it is characterized in that: the steel plate at cutter is provided with pit (2), keyway square hole (6), the second key (7), through hole (18), side at the connecting portion of the band of position of laying key at the edge of described pit (2) is provided with keyway square hole (6), opposite side is provided with described the second key (7), it is characterized in that: there is reduction described the second key (7) part; Still be provided with through hole (18) in the centre of described pit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010227439XA CN101904244B (en) | 2010-07-09 | 2010-07-09 | Hay knife for lawn hay mower without tool holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010227439XA CN101904244B (en) | 2010-07-09 | 2010-07-09 | Hay knife for lawn hay mower without tool holder |
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| Publication Number | Publication Date |
|---|---|
| CN101904244A CN101904244A (en) | 2010-12-08 |
| CN101904244B true CN101904244B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010227439XA Active CN101904244B (en) | 2010-07-09 | 2010-07-09 | Hay knife for lawn hay mower without tool holder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636348A (en) * | 2013-11-27 | 2014-03-19 | 铜陵市经纬流体科技有限公司 | Rotary knife |
| CN104115610A (en) * | 2014-08-11 | 2014-10-29 | 高满珍 | Lawn mower motor with blade reserve-installation preventing structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315602A1 (en) * | 1987-11-04 | 1989-05-10 | Maria Rosa Calcinai | Rotor with blades for grass-cutter mowing machines and similar, fabricated in a single piece forming blades and hub for insertion of shaft |
| CN1381164A (en) * | 2001-04-19 | 2002-11-27 | 本田技研工业株式会社 | Blade used on mower |
| US20030209000A1 (en) * | 2002-05-08 | 2003-11-13 | Mannon N. Kevin | Mower blade |
| CN2927660Y (en) * | 2006-06-07 | 2007-08-01 | 宁波鼎锐工贸有限公司 | Cutting blade mounting structure for garden machine |
| CN101438653A (en) * | 2007-11-21 | 2009-05-27 | 力帆实业(集团)股份有限公司 | Knife blade rotary grass cutter of rotary grass cutter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7127877B2 (en) * | 2004-01-30 | 2006-10-31 | Briggs & Stratton Corporation | Universal mower blade |
| CN201015290Y (en) * | 2007-03-27 | 2008-02-06 | 福建省晋江市三力机车有限公司 | Novel mower |
-
2010
- 2010-07-09 CN CN201010227439XA patent/CN101904244B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315602A1 (en) * | 1987-11-04 | 1989-05-10 | Maria Rosa Calcinai | Rotor with blades for grass-cutter mowing machines and similar, fabricated in a single piece forming blades and hub for insertion of shaft |
| CN1381164A (en) * | 2001-04-19 | 2002-11-27 | 本田技研工业株式会社 | Blade used on mower |
| US20030209000A1 (en) * | 2002-05-08 | 2003-11-13 | Mannon N. Kevin | Mower blade |
| CN2927660Y (en) * | 2006-06-07 | 2007-08-01 | 宁波鼎锐工贸有限公司 | Cutting blade mounting structure for garden machine |
| CN101438653A (en) * | 2007-11-21 | 2009-05-27 | 力帆实业(集团)股份有限公司 | Knife blade rotary grass cutter of rotary grass cutter |
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| CN101904244A (en) | 2010-12-08 |
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Address after: Zhejiang province Yuyao City Yangming Road 315400 No. 518 Patentee after: Ningbo big leaf garden equipment Limited by Share Ltd Address before: Zhejiang province Yuyao City Yangming Road 315400 No. 518 Patentee before: Equipment Co., Ltd. Ningbo Ye Yuanlin |