CN202026600U - Blade fixing structure of rotary mower - Google Patents
Blade fixing structure of rotary mower Download PDFInfo
- Publication number
- CN202026600U CN202026600U CN2011201012262U CN201120101226U CN202026600U CN 202026600 U CN202026600 U CN 202026600U CN 2011201012262 U CN2011201012262 U CN 2011201012262U CN 201120101226 U CN201120101226 U CN 201120101226U CN 202026600 U CN202026600 U CN 202026600U
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- China
- Prior art keywords
- blade
- fixing structure
- installing hole
- knife rest
- connecting pin
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Abstract
The utility model discloses a blade fixing structure of a rotary mower, belonging to a cutting part of the rotary mower in the field of garden greening tools. The blade fixing structure mainly comprises a motor, a blade rest, blades, connecting pins and the like. The blade fixing structure is mainly characterized in that a large installation hole and a small installation hole which are communicated with each other are arranged on each blade, and a large end and a small end are arranged on each connecting pin. When the connecting pin penetrates through the large installation hole and is connected to the blade rest, the small end is in the large installation hole, at the moment, the blade is horizontally and outwards pulled to enable the small end of the connecting pin to enter the small installation hole and therefore the connecting pin can be connected with the small installation hole in a clamping way. Since the blades can be made of plastics, the cost can be reduced, the weight can be decreased and the blades are not apt to be ruptured; moreover, since the blades adopt the design of double installation holes, the blades can be buffered even though the blades touch stones or stumps in the mowing process; and the improved blade fixing structure additionally has the advantages of rapidness and labor saving in disassembling and assembling, simpleness and reliability in connection and good mowing effect.
Description
Technical field
The utility model relates to a kind of blade fixing structure, is meant a kind of blade fixing structure of rotary mower specifically.
Background technology
At present, the blade fixing structure of rotary mower mainly contains two kinds: a kind of is to be strip with insert design, in the design of the two ends of strip blade blade is arranged, screw passes blade center and is fixed on the knife rest, blade holder turns is cut with regard to the blade that drives the blade two ends, and the defective of this blade mounting structure is to carry out rapid changing knife, and cutting process is when running into stone or stub, blade can't cushion, and easily blade is interrupted or blade is got breach; Also having a kind of structure is to be provided with single installing hole at blade one end design blade, the other end, on knife rest, be connected with the above-mentioned blade of a plurality of circumference uniform distributions then with connecting pin, this blade is owing to have only an installing hole, even event does not kill blade and makes blade that buffering be arranged when cutting process is run into stone or stub when installing, but but can't realize rapid changing knife, greatly influence cutting effect.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective of prior art and provides a kind of dismounting quick, laborsaving, and connection is simple, reliable, the blade fixing structure of a kind of rotary mower of good cutting effect.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of blade fixing structure of rotary mower, comprise the motor that is installed in the mower head, the motor shaft of this motor straight down, and on described motor shaft, be provided with the knife rest that is connected, it is the blade that circumference uniform distribution is made at the center with the motor shaft that this knife rest is provided with a plurality of, be equipped with installing hole on each blade, be equipped with in this installing hole blade is connected connecting pin on the knife rest, the installing hole on the described blade is big installing hole and the little installing hole that interconnects; Described connecting pin has big end and the small end that is multidiameter, and this small end clamps and is connected in the little installing hole.
It is that level was pulled in the little installing hole after the small end of connecting pin passed big installing hole that the small end of described connecting pin is connected with clamping of little installing hole.
Described blade has two or three of circumference uniform distribution.
The syndeton of described motor shaft and knife rest is to be embedded with adapter sleeve on knife rest, and this adapter sleeve presses and is fixed on the motor shaft.
Middle part, described knife rest bottom surface is provided with back-up ring, also is provided with to be centered around back-up ring two or three retaining muscle on every side.
Described retaining muscle is provided with the chamfering against the inclination of knife rest direction of rotation.
Described knife rest excircle is provided with fillet structure.
Described blade is plastic blade or metal blade.
Compared with prior art, the utility model mainly is to be provided with big installing hole and the little installing hole that is connected on blade, on connecting pin, be provided with big end and small end, after connecting pin passes big installing hole and is connected on the knife rest, small end is positioned at big installing hole, and level was pulled outwardly the small end that knife section makes connecting pin and entered in the little installing hole this moment, just can clamp with little installing hole formation to be connected, this blade can adopt plastics to make, and can reduce cost, weight reduction and non-frangibility.Simultaneously, the design of the double mounting port that adopts on the blade, even make blade also can obtain buffering when cutting process is run into stone or stub, it is quick, laborsaving that the blade fixing structure after the improvement also has a dismounting, connect simple, reliable, the advantage of good cutting effect.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the structural representation of blade.
Fig. 6 is the stereogram of blade.
Fig. 7 is the structural representation of connecting pin.
Embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As Fig. 1～shown in Figure 7,1. motor, 11. motor shafts, 2. knife rest, 21. fillet structures, 22. back-up rings, 23. chamferings, 24. retaining muscle, 3. connecting pin, 31. hold greatly, 32. small ends, 4. collar, 5. blade, 51. big installing holes, 52. little installing holes, 6. coupling sleeve.
A kind of blade fixing structure of rotary mower comprises the motor 1 that is installed in mower head (not shown), and the motor shaft 11 of this motor is outputting power straight down, and is provided with knife rest 2 on motor shaft.Described knife rest is flange-like, its end face middle part is embedded with metal adapter sleeve 6, and this adapter sleeve is pressed on the motor shaft 11, makes knife rest 2 and motor shaft 11 form fixing, this syndeton can effectively guarantee knife rest 2 in rotary course, and motor shaft 11 skidding can not occur.
It is the blade 5 that the center is symmetrically distributed with motor shaft 11 that described knife rest 2 bottom surfaces are provided with two, and these two blades all adopt nonmetallic plastics to make, and are installed in two long ends of flange-like knife rest 2 respectively.The plastic blade cost is low, in light weight, good toughness not frangibility, cutting efficiency height, connect reliable and have cutting effect preferably, so can replace nylon rope or the metal blade used always.
Described each blade 5 all has a blade cut end and the link with large and small installing hole, this big installing hole 51 and the structure of little installing hole 52 for being connected, and the big relatively mounting hole site of little installing hole 52 is in ragged edge.Be equipped with connecting pin 3 in the described big installing hole 51, this connecting pin has big end 31 and the small end 32 that is multidiameter, big end is outer to be exposed at outside the blade 5, the small end external diameter is slightly larger than the junction of large and small installing hole, and the small end end be provided with one the circle draw-in groove 33, after small end 32 passes big installing hole 51 and knife rest 2 successively, in its draw-in groove promptly by collar 4 engagement connections, to prevent connecting pin 3 landing in knife rest 2 high speed rotating.Simultaneously, when the small end 32 of connecting pin 3 is located in the big installing hole 51, also need level firmly to be pulled outwardly knife section 5, the junction that makes small end 32 cross large and small installing hole enters in the little installing hole 52, and connection could formally be finished.The small end 32 of connecting pin 3 formed with little installing hole 52 and clamped annexation this moment, when 5 rotations of knife rest 2 rotating band knife sections, just can be subjected to centrifugal action make blade all the time close-fitting in little installing hole 52.This blade is owing to adopt the design of double mounting port, so even blade also can obtain cushioning when cutting process is run into stone or stub because of carelessness, and tool changing is quick, laborsaving.
Middle part, described knife rest 2 bottom surfaces is provided with back-up ring 22, also is provided with to be centered around back-up ring two retaining muscle 24 on every side.The design of this back-up ring and retaining muscle is mainly in order to prevent the phenomenon that two blades 5 occur running foul of each other because of inertia when starting and stopping.Described retaining muscle 24 is provided with the chamfering 23 against the inclination of knife rest 2 direction of rotation, and knife rest 2 bottom surface excircles are provided with fillet structure 21, and the design of chamfering and fillet structure is mainly used in the windage when alleviating knife rest 2 rotations, avoids causing the additive decrementation of motor 1 power.
Claims (8)
1. the blade fixing structure of a rotary mower, comprise the motor (1) that is installed in the mower head, the motor shaft of this motor (11) straight down, and on described motor shaft, be provided with the knife rest (2) that is connected, it is the blade (5) that circumference uniform distribution is made at the center with motor shaft (11) that this knife rest is provided with a plurality of, be equipped with installing hole on each blade, be equipped with in this installing hole blade (5) is connected connecting pin (3) on the knife rest (2), it is characterized in that the installing hole on the described blade (5) is big installing hole (51) and the little installing hole (52) that interconnects; Described connecting pin (3) has big end (31) and the small end (32) that is multidiameter, and this small end clamps and is connected in the little installing hole (52).
2. the blade fixing structure of a kind of rotary mower according to claim 1, it is that level was pulled in the little installing hole (52) after the small end (32) of connecting pin (3) passed big installing hole (51) that the small end (32) that it is characterized in that described connecting pin (3) is connected with clamping of little installing hole (52).
3. the blade fixing structure of a kind of rotary mower according to claim 2 is characterized in that described blade (5) has two or three of circumference uniform distribution.
4. the blade fixing structure of a kind of rotary mower according to claim 1, the syndeton that it is characterized in that described motor shaft (11) and knife rest (2) is to be embedded with adapter sleeve (6) on knife rest (2), and this adapter sleeve presses and is fixed on the motor shaft (11).
5. the blade fixing structure of a kind of rotary mower according to claim 1 is characterized in that middle part, described knife rest (2) bottom surface is provided with back-up ring (22), also is provided with to be centered around back-up ring two or three retaining muscle (24) on every side.
6. the blade fixing structure of a kind of rotary mower according to claim 5 is characterized in that described retaining muscle (24) is provided with the chamfering (23) that tilts against knife rest (2) direction of rotation.
7. the blade fixing structure of a kind of rotary mower according to claim 1 is characterized in that described knife rest (2) excircle is provided with fillet structure (21).
8. according to the blade fixing structure of each described a kind of rotary mower of claim 1～7, it is characterized in that described blade (5) is plastic blade or metal blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201012262U CN202026600U (en) | 2011-04-03 | 2011-04-03 | Blade fixing structure of rotary mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201012262U CN202026600U (en) | 2011-04-03 | 2011-04-03 | Blade fixing structure of rotary mower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202026600U true CN202026600U (en) | 2011-11-09 |
Family
ID=44888918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201012262U Expired - Fee Related CN202026600U (en) | 2011-04-03 | 2011-04-03 | Blade fixing structure of rotary mower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202026600U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668803A (en) * | 2012-05-31 | 2012-09-19 | 苏州沃达园林机械有限公司 | Lawnmower blade fixing device |
| CN107404841A (en) * | 2015-03-25 | 2017-11-28 | 胡斯华纳有限公司 | The improved impact resistance of robot manipulating task instrument |
| CN115250722A (en) * | 2022-08-29 | 2022-11-01 | 常州戴雅托普机械有限公司 | Detachable grass mowing head capable of preventing grass roots from splashing |
-
2011
- 2011-04-03 CN CN2011201012262U patent/CN202026600U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668803A (en) * | 2012-05-31 | 2012-09-19 | 苏州沃达园林机械有限公司 | Lawnmower blade fixing device |
| CN107404841A (en) * | 2015-03-25 | 2017-11-28 | 胡斯华纳有限公司 | The improved impact resistance of robot manipulating task instrument |
| CN115250722A (en) * | 2022-08-29 | 2022-11-01 | 常州戴雅托普机械有限公司 | Detachable grass mowing head capable of preventing grass roots from splashing |
| CN115250722B (en) * | 2022-08-29 | 2024-05-24 | 常州戴雅托普机械有限公司 | Detachable grass-mowing head capable of preventing grass roots from splashing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20130403 |