CN107926265B - Quick automatic mechanism of beating grass of being qualified for next round of competitions - Google Patents
Quick automatic mechanism of beating grass of being qualified for next round of competitions Download PDFInfo
- Publication number
- CN107926265B CN107926265B CN201711093529.2A CN201711093529A CN107926265B CN 107926265 B CN107926265 B CN 107926265B CN 201711093529 A CN201711093529 A CN 201711093529A CN 107926265 B CN107926265 B CN 107926265B
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- CN
- China
- Prior art keywords
- base
- connecting rod
- winding shaft
- shell
- grass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- A01D34/416—Flexible line cutters
-
- 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
- A01D34/416—Flexible line cutters
- A01D34/4167—Protection devices
Abstract
The invention discloses a quick and automatic line outgoing grass mowing head mechanism, which comprises: the shell comprises a central shaft, two supports and two square holes, and is connected with an external motor input shaft through an internal threaded hole; the connecting rod flyweight device is hinged on a support of the shell, the winding shaft is sleeved on a central shaft of the shell, a plurality of bulges are arranged at the bottom of the winding shaft, and the winding shaft is transmitted by the rotation of the base through the bulges at the bottom; the spring pre-tightening device is provided with an inner hexagonal hole and an outer thread and is rotationally pre-tightened by adopting a universal inner hexagonal wrench; the base accommodates the winding shaft and the spring pre-tightening device, the base is connected with the square hole of the shell through a buckle, and the lower end of the base is connected with the spring pre-tightening device. The invention realizes automatic line outgoing and fixed-length line outgoing, and gives better grass-mowing experience to users; the invention adopts mechanical control, and does not need to consume physical strength of a user; the invention has simple operation and lower cost, and reduces the economic burden of users.
Description
Technical Field
The invention relates to the field of garden handheld mowers, in particular to a quick and automatic line outgoing grass mowing head mechanism.
Background
With the ever-increasing awareness and requirements of people on vegetation ecology and urban gardens, the application of the lawn mower is more and more extensive and frequent. The grass cutting head is used as a cutting device of the grass cutter, and the reasonability of the structural function of the grass cutting head directly influences the grass cutting effect of the grass cutter, the working efficiency and quality of workers and the service life of the grass cutter. The most extensive working principle of the beating and paying-off type grass-mowing head sold in the market of China is as follows: through knocking the grass mowing head pressing cover on the ground, the pawl between the wire spool and the grass mowing head cover is staggered and positioned, the wire spool rotates to achieve wire outgoing, the spring resets in a short time, the wire spool is clamped in the clamping groove again, and the wire outgoing is stopped. However, this type of grass-mowing head has problems of severe wear, inconvenience in operation, and the like as described in the background of the project, because of the generation of a large vibration at the time of striking.
The patent publication numbers are: the utility model provides a novel beat formula unwrapping wire head of beating grass that mentions in CN 203226032U's patent, it includes the drum seat, the connector, the wire reel, beat the rope of beating grass, a spring, beat the head lid, even the street sets up on the central connecting sleeve of drum seat, beat the rope winding of beating grass on the wire reel, be equipped with the elasticity buckle on the drum seat, beat and be equipped with the buckle with elasticity buckle matched with on the head lid, be equipped with outside bellied contact on the wire reel and overlap on the central connecting sleeve of drum seat, beat the head lid cover on the contact of wire reel and with elasticity buckle and buckle cooperation fixed on the drum seat. The design of the traditional knocking type grass cutting head is optimized, the assembly difficulty is reduced, the cost is reduced, the knocking type line outlet mode of the traditional grass cutting head is still reserved, the phenomenon of serious abrasion can occur when the traditional grass cutting head is used for a long time and the knocking times are large, and the grass cutting head can be directly scrapped when the traditional grass cutting head is serious.
The patent numbers are: the patent ZL200720199016.5 discloses a full-automatic grass mowing head which is driven by a mower to rotate at a high speed when in use, a nylon rope performs weeding action under the action of inertia, and the nylon rope is exposed out of the grass mowing head by a proper length due to the blocking of three convex columns. When the nylon rope is not long enough or the nylon rope is shortened due to use loss, the nylon rope is automatically thrown out from the blocked convex column under the action of inertia, so that the purpose of automatically discharging the rope is achieved. The patent avoids the harm caused by knocking, but utilizes the deviation of the elastic clamping block to lead out the line and then recovers under the action of the elastic force, but the control of the line outgoing is not as stable as that of the traditional grass cutting head.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a quick and automatic line-outgoing grass mowing head mechanism which is novel, stable and reliable and automatic line-outgoing grass mowing head mechanism, and the line outgoing is controlled by using the down force provided by centrifugal force instead of knocking force, so that the damage caused by knocking of the original grass mowing head is avoided. When the rope of beating the grass wearing and tearing, the rope quality of beating the grass reduces to the prime mover load reduces, and centrifugal force increases, and the holding down force increase, and the wire reel breaks away from the draw-in groove, thereby makes the rope of beating the grass can emit.
In order to realize the purpose, the invention is realized according to the following technical scheme:
the utility model provides a quick automatic mechanism of beating grass of being qualified for next round of competitions which characterized in that includes:
the lawn mower comprises a shell, a movable support and a control device, wherein the shell comprises a central shaft, two supports and two square holes, wherein the top of the central shaft is provided with an inner screw hole and is connected with a rotating shaft of the lawn mower; the support is connected with the connecting rod flyweight device; the square hole is connected with a buckle on the base;
the connecting rod flyweight device is hinged to a support of the shell and comprises a connecting rod, a bolt and a nut, the connecting rod is hinged to the shell through the bolt and the nut, and the connecting rod is hinged to the inside of the shell;
the winding shaft is sleeved on the central shaft of the shell and is rotationally transmitted by the base through a bottom bulge, and a grass beating rope is wound outside the winding shaft; the bottom of the winding shaft is provided with a plurality of bulges which are uniformly distributed around the rotation center of the winding shaft, and the rotation center of the winding shaft is provided with a stepped shaft hole;
the spring pre-tightening device is provided with an inner hexagonal hole and an outer thread which are matched with a hexagonal wrench at the tail end, and the spring pre-tightening device is rotationally pre-tightened by adopting a general inner hexagonal wrench;
the base, the base holds twine the spool with spring preloading device, the base passes through the buckle and links to each other with the quad slit of shell, the lower extreme of base with spring preloading device links to each other.
In the technical scheme, the outer surface of the shell is provided with a plurality of wire outlet holes which are uniformly distributed around the rotation center of the shell and are used for being connected with the base.
In the technical scheme, the connecting rod is an L-shaped connecting rod, the turning part is provided with a shaft hole, the states of the connecting rod flyweight device comprise a non-line-outgoing state and a line-outgoing state, when the rotating speed of the grass mowing head does not exceed the preset working rotating speed, the connecting rod flyweight device is in the non-line-outgoing state, the connecting rod maintains the initial spatial position in contact with the upper part of the winding shaft, and the grass mower carries out normal grass mowing work in the state; when the rotating speed exceeds the preset working rotating speed, the connecting rod flyweight device is switched to be in a wire outlet state, the connecting rod rotates around the hinge, and the connecting rod keeps in contact with the wire winding shaft to push the wire winding shaft downwards to move.
In the technical scheme, the outer surface of the base is provided with a plurality of wire outlet holes, and the plurality of wire outlet holes are uniformly distributed around the rotation center of the base; the base internal surface is provided with a plurality of archs, and a plurality of archs are around base rotation center evenly distributed, wherein, upper strata protruding with twine spool cooperation, lower floor's arch is used for restricting twine spool rotatory angle after pushing down once.
In the technical scheme, the center of the base is provided with the internal thread hole which is used for being matched with the external thread of the spring pre-tightening knob.
Compared with the prior art, the invention has the following beneficial effects:
if the length of the rope does not meet the requirement, the automatic line outgoing device can automatically lead out when idling, so that the beating of the grass beating head is avoided, and the problem of high operation strength in the prior art is solved;
the invention improves the stability and the safety of the device and avoids the damage caused by the vibration generated by huge knocking;
the invention does not adopt electric control outgoing lines and has lower cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of a grass mowing head with a quick automatic line outgoing function;
FIG. 2 is a schematic structural view of a housing part of the grass mowing head with quick automatic line outgoing;
FIG. 3 is a schematic structural view of a connecting rod flyweight device part of the grass cutting head for rapid automatic line outgoing;
FIG. 4 is a schematic structural view of a part of a winding shaft of the grass mowing head for fast and automatic line outgoing;
FIG. 5 is a schematic structural view of a base part of the grass trimmer head for rapid automatic line outgoing;
FIG. 6 is a schematic structural view of a spring pre-tightening device part of the grass mowing head capable of rapidly and automatically leading out wires;
in the figure: 1-a housing; 2-bolt; 3-a connecting rod; 4-a nut; 5-winding the bobbin; 6-a spring; 7-a base; 8-a spring pre-tightening device; 9-internal screw holes; 10-square hole; 11-a central axis; 12-a support; 13-a limiting plate; 14-limiting plate of winding shaft; 15-shaft hole; 16-winding gap; 17-winding shaft protrusion; 18-outlet holes; 19-buckling; 20-internal threads; 21-the upper layer of the base is raised; 22-base lower layer projection; 23-external thread; 24-hexagon socket.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Fig. 1 is a schematic view of the overall structure of an automatic line outgoing grass mowing head, and as shown in fig. 1, the quick automatic line outgoing grass mowing head mechanism of the invention comprises:
the mower comprises a shell, a main shaft, a plurality of supporting seats and a plurality of supporting rods, wherein the shell comprises a central shaft 11, two supporting seats 12 and two square holes 10, and an inner screw hole 9 is formed in the top of the central shaft 11 and connected with a rotating shaft of the mower; the support 12 is connected with the connecting rod 3;
the connecting rod flyweight device is hinged to a support 12 of the shell and comprises a nut 2, a connecting rod 3 and a bolt 4, the connecting rod 3 is hinged to the shell through the bolt 4 and the nut 2, and the connecting rod is hinged inside the shell; rotate under certain angle around the pin joint under the influence of rotational speed: when the wire is not wound, the connecting rod 3 is lapped on the top of the winding shaft; when the wire is outgoing, the connecting rod 3 rotates under the action of centrifugal force, and the winding spool 5 is pressed downwards on the inner side of the connecting rod 3 to be outgoing.
The winding shaft 5 is sleeved on the central shaft 11 of the shell, and receives the rotation transmission of the base through a bottom bulge 17, and a grass beating rope is wound outside the winding shaft 5; a winding notch 16 is arranged in the middle of the winding shaft 5 and is used as a starting point for winding the grass beating rope; the bottom of the winding shaft 5 is provided with a plurality of bulges 17 which are uniformly distributed around the rotation center of the winding shaft, and the rotation center of the winding shaft 5 is provided with a stepped shaft hole 15;
The base 7 accommodates the winding shaft 5 and the spring pre-tightening device 8, the base 7 is connected with the square hole 10 of the shell through a buckle 19, and the lower end of the base 7 is connected with the spring pre-tightening device 8. The base is provided with upper and lower layer bulges 21 and 22 matched with the winding shaft, the outer wall of the base is provided with a wire outlet hole 18 for wire outlet, and the lower end of the base is provided with an internal thread 20 connected with a spring pre-tightening mechanism.
FIG. 2(a) is a schematic view of an external structure of a housing portion of a grass trimmer head capable of automatically and rapidly discharging grass, wherein 9 is an internal threaded hole connected with a rotating shaft of a mower; 10 is a square hole and is connected with a buckle 19 of the base 7. FIG. 2(b) is a schematic view of the internal structure of the housing of the grass trimmer head with the quick automatic line outgoing, wherein 11 is the central axis; 12 is a support, and is linked with a connecting rod 3; a stop plate 13 is provided to cooperate with a stop plate 14 on the spool.
Fig. 3 is a schematic structural diagram of a connecting rod flyweight device part of the rapid automatic line outgoing mowing head, wherein the connecting rod flyweight device comprises a nut 2, a connecting rod 3 and a bolt 4, the connecting rod 3 is hinged on a shell through the bolt 4 and the nut 2, and the connecting rod is hinged inside the shell.
Fig. 4 is a schematic structural view of a spool part of the grass head for quick automatic outlet, wherein 14 is a spool limiting plate, which is matched with the limiting plate 13 on the housing 1; 15 is a stepped shaft hole for matching with the central shaft 11; 16 is a winding gap which is used as a starting point for winding the grass beating rope; 17 are spool projections which mate with projections 21 and 22 on the base.
FIG. 5 is a schematic structural view of a base part of the grass trimmer head for fast and automatic line outgoing, wherein 18 is a line outgoing hole; 19 is a buckle which is connected with the square hole 10 on the shell 1; 20 is an internal thread which is matched with the spring pre-tightening device 8; 21 is a base upper layer projection, 22 is a base lower layer projection, and the base upper layer projection and the base lower layer projection are matched with a winding shaft projection 17 on a winding shaft 5.
Fig. 6 is a schematic structural diagram of a spring pre-tightening device part of the quick automatic line outgoing grass mowing head, wherein an inner hexagonal hole 24 and an outer thread 23 matched with a hexagonal wrench are arranged at the tail end of the spring pre-tightening device 8, and a universal inner hexagonal wrench is adopted for rotary pre-tightening, specifically, the inner hexagonal wrench is used for aligning the inner hexagonal hole 24 for rotation, so that the mechanism moves upwards to give an initial pre-tightening force to the spring.
The connecting rod is an L-shaped connecting rod, a shaft hole is formed in the turning position, the states of the connecting rod flyweight device comprise a non-line-outgoing state and a line-outgoing state, when the rotating speed of the grass mowing head does not exceed the preset working rotating speed, the connecting rod flyweight device is in the non-line-outgoing state, the connecting rod maintains the initial space position in contact with the upper part of the winding shaft, and the mower can normally mow grass in the state; when the rotating speed exceeds the preset working rotating speed, the connecting rod flyweight device is switched to be in a wire outlet state, the connecting rod rotates around the hinge, and the connecting rod keeps in contact with the wire winding shaft to push the wire winding shaft downwards to move.
The outer surface of the base is provided with a plurality of wire outlet holes which are uniformly distributed around the rotation center of the base; the inner surface of the base is provided with a plurality of bulges, the bulges are uniformly distributed around the rotation center of the base, the bulges on the upper layer are matched with the winding shaft, and the bulges on the lower layer are used for limiting the single-time wire outlet length.
The center of the base is provided with an internal thread hole.
The working principle of the invention is as follows: when the mower normally mows, the load is larger, the rotating speed is lower, and at the moment, the mower rotates at a low speed. When the mower is not mowing and the rope is not worn, the rotating speed of the mower is higher than that of the mower during working, and the speed is defined as middle speed. When the mower is not mowing and the rope length is worn to a certain extent, the load on the prime mover will decrease, but instead the rotational speed will increase, defined as "high speed". When the mower rotates at high speed, the centrifugal force of the connecting rod 3 reaches a certain degree, the pressure of the inner side of the lever on the winding shaft 5 is greater than the initial pretightening force of the spring, the winding shaft is pressed down, so that the winding shaft is staggered and positioned with the bulge between the grass cutting head bases, the winding shaft rotates freely, and the line outlet is realized by means of the inertia force; the spring is reset in a short time, so that the winding shaft is clamped in the buckle again, and the wire outlet is stopped.
During assembly, the connecting rod 3 is first connected to the support 12 of the housing by means of the bolt 2 and the nut 4. Next, the winding shaft 5 and the spring 6 are sequentially fitted over the central shaft 11. The base 7 and the housing 1 are then fixed by means of the snap 19 and the square hole 10. Finally, the spring pre-tightening device 8 is screwed into the internal thread 23 at the lower part of the base through an internal hexagonal wrench, and the assembly is completed.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (4)
1. The utility model provides a quick automatic mechanism of beating grass of being qualified for next round of competitions which characterized in that includes:
the lawn mower comprises a shell, a movable support and a control device, wherein the shell comprises a central shaft, two supports and two square holes, wherein the top of the central shaft is provided with an inner screw hole and is connected with a rotating shaft of the lawn mower; the support is connected with the connecting rod flyweight device; the square hole is connected with a buckle on the base;
the connecting rod flyweight device is hinged to the support of the shell and comprises a connecting rod, a bolt and a nut, the connecting rod is hinged to the shell through the bolt and the nut, and the connecting rod is hinged to the inside of the shell;
the winding shaft is sleeved on the central shaft of the shell and is rotationally transmitted by the base through a bottom bulge, and a grass beating rope is wound outside the winding shaft; the bottom of the winding shaft is provided with a plurality of bulges which are uniformly distributed around the rotation center of the winding shaft, and the rotation center of the winding shaft is provided with a stepped shaft hole;
the spring pre-tightening device is provided with an inner hexagonal hole and an outer thread which are matched with a hexagonal wrench at the tail end, and the spring pre-tightening device is rotationally pre-tightened by adopting a general inner hexagonal wrench;
the base is used for accommodating the winding shaft and the spring pre-tightening device, the base is connected with the square hole of the shell through a buckle, and the lower end of the base is connected with the spring pre-tightening device;
the connecting rod is L-shaped and is provided with a shaft hole at the turning part.
2. The mechanism of claim 1, wherein the states of the link flyweight device include a non-line-outgoing state and a line-outgoing state, and when the rotation speed of the grass mowing head does not exceed a preset working rotation speed, the link flyweight device is in the non-line-outgoing state, and the link maintains an initial spatial position in contact with the upper part of the spool, in which the mower performs normal grass mowing; when the rotating speed exceeds the preset working rotating speed, the connecting rod flyweight device is switched to be in a wire outlet state, the connecting rod rotates around the hinge, and the connecting rod keeps in contact with the wire winding shaft to push the wire winding shaft downwards to move.
3. The mechanism of claim 1, wherein the outer surface of the base is provided with a plurality of outlets evenly distributed around the center of rotation of the base; the base internal surface is provided with a plurality of archs, and a plurality of archs are around base rotation center evenly distributed, wherein, upper strata protruding with twine spool cooperation, lower floor's arch is used for restricting twine spool rotatory angle after pushing down once.
4. The mechanism of claim 1, wherein the base has a hole with internal thread in the center for mating with the external thread of the spring pre-tightening knob.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642021 | 2017-07-31 | ||
| CN2017106420217 | 2017-07-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107926265A CN107926265A (en) | 2018-04-20 |
| CN107926265B true CN107926265B (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711093529.2A Expired - Fee Related CN107926265B (en) | 2017-07-31 | 2017-11-08 | Quick automatic mechanism of beating grass of being qualified for next round of competitions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107926265B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887348A (en) * | 1996-08-23 | 1999-03-30 | Iacona; Fernando R. | Head for string trimmer |
| CN2459863Y (en) * | 2000-12-04 | 2001-11-21 | 苏州太湖企业有限公司 | Automatic paying-out mechanism of mower |
| CN201097498Y (en) * | 2007-09-10 | 2008-08-13 | 苏州利维科电器有限公司 | Work head of lawn trimming machine |
| CN201185571Y (en) * | 2007-12-07 | 2009-01-28 | 上海威耳特机械科技有限公司 | Full automatic grass-mowing head |
| CN202455824U (en) * | 2012-02-07 | 2012-10-03 | 宁波伊司达工具有限公司 | Automatic pay-off mechanism for rotary grass cutting machine |
| CN203407208U (en) * | 2013-08-20 | 2014-01-29 | 苏州康阳机电有限公司 | Automatic pay-off device of hay mower |
| CN104663113A (en) * | 2013-11-28 | 2015-06-03 | 苏州宝时得电动工具有限公司 | Rotating grass trimmer |
| CN105393690A (en) * | 2014-09-15 | 2016-03-16 | 苏州宝时得电动工具有限公司 | Paying-off mechanism and grass cutting machine |
-
2017
- 2017-11-08 CN CN201711093529.2A patent/CN107926265B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887348A (en) * | 1996-08-23 | 1999-03-30 | Iacona; Fernando R. | Head for string trimmer |
| CN2459863Y (en) * | 2000-12-04 | 2001-11-21 | 苏州太湖企业有限公司 | Automatic paying-out mechanism of mower |
| CN201097498Y (en) * | 2007-09-10 | 2008-08-13 | 苏州利维科电器有限公司 | Work head of lawn trimming machine |
| CN201185571Y (en) * | 2007-12-07 | 2009-01-28 | 上海威耳特机械科技有限公司 | Full automatic grass-mowing head |
| CN202455824U (en) * | 2012-02-07 | 2012-10-03 | 宁波伊司达工具有限公司 | Automatic pay-off mechanism for rotary grass cutting machine |
| CN203407208U (en) * | 2013-08-20 | 2014-01-29 | 苏州康阳机电有限公司 | Automatic pay-off device of hay mower |
| CN104663113A (en) * | 2013-11-28 | 2015-06-03 | 苏州宝时得电动工具有限公司 | Rotating grass trimmer |
| CN105393690A (en) * | 2014-09-15 | 2016-03-16 | 苏州宝时得电动工具有限公司 | Paying-off mechanism and grass cutting machine |
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|---|---|
| CN107926265A (en) | 2018-04-20 |
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