CN108934473B - Grass cutter capable of preventing grass from winding and beating head - Google Patents
Grass cutter capable of preventing grass from winding and beating head Download PDFInfo
- Publication number
- CN108934473B CN108934473B CN201810752878.9A CN201810752878A CN108934473B CN 108934473 B CN108934473 B CN 108934473B CN 201810752878 A CN201810752878 A CN 201810752878A CN 108934473 B CN108934473 B CN 108934473B
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- grass
- output shaft
- sliding rod
- winding
- sheath
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D75/00—Accessories for harvesters or mowers
- A01D75/18—Safety devices for parts of the machines
- A01D75/185—Avoiding collisions with obstacles
Abstract
The invention discloses a grass mower capable of preventing grass from winding a grass mowing head, and aims to provide the grass mower capable of effectively solving the problem that the output shaft is stuck and the machine is damaged due to the fact that weeds can wind on the output shaft between a gear box shell and the grass mowing head shell. The gear transmission box comprises a gear box shell and an output shaft; the grass mowing head comprises a grass mowing head shell fixed on an output shaft; be equipped with the antiwind sheath on the side of the first shell of beating grass towards the gear box shell, the output shaft is located the antiwind sheath, and the antiwind sheath is coaxial with the output shaft, is equipped with on one side of the first gear box shell of beating grass with antiwind sheath matched with annular holding tank, and the tip of antiwind sheath stretches into in the annular holding tank.
Description
Technical Field
The invention relates to a mower, in particular to a mower capable of preventing grass from winding a grass cutting head.
Background
The existing mower usually comprises a gear transmission case and a grass mowing head connected with an output shaft of the gear transmission case, and a gap exists between a gear case shell of the gear transmission case and a grass mowing head shell of the grass mowing head, so that in the working process of the mower, a part of weeds can be wound on the output shaft between the gear case shell and the grass mowing head shell, the grass mowing head load is increased, the rotating speed is reduced, even the output shaft is blocked, and the machine is damaged.
Disclosure of Invention
The invention aims to provide a grass mower capable of preventing grass from winding a grass mowing head, which can effectively solve the problem that the output shaft is blocked and the machine is damaged due to the fact that weeds are wound on the output shaft between a gear box shell and the grass mowing head shell.
The technical scheme of the invention is as follows:
a grass mower that prevents grass from tangling a grass cutting head, comprising: the gear transmission box comprises a gear box shell and an output shaft; the grass mowing head comprises a grass mowing head shell fixed on an output shaft; be equipped with the antiwind sheath on the side of the first shell of beating grass towards the gear box shell, the output shaft is located the antiwind sheath, and the antiwind sheath is coaxial with the output shaft, is equipped with on one side of the first gear box shell of beating grass with antiwind sheath matched with annular holding tank, and the tip of antiwind sheath stretches into in the annular holding tank.
This scheme is through setting up at antiwind sheath and annular holding tank, and the output shaft is located the antiwind sheath, and in the tip of antiwind sheath stretched into annular holding tank, so can avoid the lawn mower at the course of the work, on some weeds can directly twine the output shaft between gear box shell and the first shell of beating grass, the first load of beating grass appeared increasing, the rotational speed descends, causes the output shaft card to die even, damages the problem of machine.
Preferably, the grass winding and cutting device comprises a guide hole which is arranged on the anti-winding sheath and extends along the radial direction of the output shaft, a sliding rod which is arranged in the guide hole in a sliding way, and an eccentric wheel sleeve which is arranged on the side surface of the gear box shell facing the grass cutting head,
the eccentric wheel sleeve is positioned on the inner side of the anti-winding sheath, the axis of the eccentric wheel sleeve is parallel to the axis of the output shaft, the first end of the sliding rod is positioned on the inner side of the anti-winding sheath, and the end face of the first end of the sliding rod is provided with a ball; the second end of the sliding rod is positioned on the outer side of the anti-winding sheath, and a cutting knife is arranged on the end face of the second end of the sliding rod; be equipped with the holding tank along the radial extension of output shaft on the lateral surface of slide bar, the first end of holding tank is close to the first end of slide bar, and the second end of holding tank is close to the second end of slide bar, be equipped with on the inboard face of guiding hole with holding tank matched with stopper, the stopper is located the holding tank, still is equipped with slide bar reset spring in the holding tank, and slide bar reset spring holds with the second of slide bar and is located same one side of stopper, and slide bar reset spring's one end is supported on the stopper, and slide bar reset spring's the other end supports on the terminal surface of the second end of holding tank.
Although the anti-winding sheath can avoid weeds from being directly wound on the output shaft, the problem that the output shaft is blocked is effectively reduced, a user finds a new problem in the actual use process, namely, the problems that the weeds are wound on the anti-winding sheath, the grass mowing head load is increased, and the rotating speed is reduced still occur, and therefore the inventor improves and designs the grass winding and cutting device.
Under the condition that the anti-winding sheath is internally provided with wound weeds, the limiting block is abutted against the end face of the first end of the accommodating groove under the action of the return spring of the sliding rod, at the moment, the first end of the sliding rod is separated from the eccentric wheel sleeve, and the first end of the sliding rod is not contacted with the eccentric wheel sleeve in the rotation process of the grass mowing head, so that the phenomenon that the supporting rotation of the grass mowing head is influenced due to the increase of the load of the grass mowing head caused by the arrangement of the wound grass cutting device can be avoided;
after weeds winding antiwind sheath appearing, partly weeds can be directly cut off by the cutting off cutter, but still partly weeds continue to twine on the antiwind sheath, because the winding power of holding tightly of weeds, the slide bar will move toward the output shaft direction along the guiding hole, after the slide bar removes a section distance, the lateral surface of the eccentric wheel cover will beat on being equipped with the ball on the terminal surface of the first end of slide bar at the rotatory in-process of grass mowing head, thereby force the quick past outwards of slide bar to shift out, directly cut off the weeds of winding on the antiwind sheath through the cutting off cutter from, avoid too much weeds to continue to twine on the antiwind sheath, cause the first load of grass mowing to increase, the problem of rotational speed decline.
Preferably, when the limiting block abuts against the end face of the first end of the accommodating groove, the distance between the first end of the sliding rod and the output shaft is larger than the maximum distance between the outer side face of the eccentric wheel sleeve and the output shaft.
Preferably, the cutting edge of the cutting blade is parallel to the axis of the output shaft.
Preferably, the side surface of the grass cutting head shell where the anti-winding sheath is located is parallel to the side surface of the gear box shell where the annular accommodating groove is located.
Preferably, the anti-winding sheath and the grass mowing head shell are of an integrally formed structure.
Preferably, the grass mowing head further comprises a rope wheel arranged in a grass mowing head shell and a grass mowing rope wound on the rope wheel in a circle mode, the axis of the rope wheel is overlapped with the axis of the output shaft, a rope hole is formed in the grass mowing head shell, and the end portion of the grass mowing rope extends out of the rope hole.
The invention has the beneficial effects that: can effectively improve because of weeds can twine on the output shaft between gear box shell and the first shell of beating the grass, cause the output shaft card to die, damage the problem of machine.
Drawings
Fig. 1 is a partial structural schematic view of a grass mower for preventing grass from winding around a grass cutting head according to the present invention.
Fig. 2 is a partial enlarged view of a portion a of fig. 1.
In the figure:
the gear transmission box 1, the gear box shell 1.1 and the output shaft 1.2;
the grass mowing device comprises a grass mowing head 2, a grass mowing head shell 2.1, a rope wheel 2.2 and a grass mowing rope 2.3;
an anti-wind jacket 3;
an annular accommodating groove 4;
winding grass cutting device 5, guiding hole 5.0, slide bar 5.1, eccentric wheel cover 5.2, ball 5.3, cutting off cutter 5.4, holding tank 5.5, stopper 5.6, slide bar reset spring 5.7.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
as shown in figure 1, the grass mower capable of preventing grass from winding on a grass cutting head comprises a gear transmission case 1, the grass cutting head 2 and a wound grass cutting device 5.
The gear transmission case comprises a gear case shell 1.1, a gear transmission mechanism arranged in the gear case shell and an output shaft 1.2.
The grass mowing head comprises a grass mowing head shell 2.1 fixed on the output shaft, a rope wheel 2.2 arranged in the grass mowing head shell and a grass mowing rope 2.3 wound on the rope wheel in a circle. The axis of the rope wheel is coincided with the axis of the output shaft. The shell of the grass cutting head is provided with a rope hole, and the end part of the grass cutting rope extends out of the rope hole.
An anti-winding sheath 3 is arranged on one side surface of the grass mowing head shell facing the gear box shell, and the anti-winding sheath and the grass mowing head shell are of an integrally formed structure. The output shaft is located in the anti-winding sheath, and the anti-winding sheath is coaxial with the output shaft.
And an annular accommodating groove 4 matched with the anti-winding sheath is arranged on one side surface of the gear box shell facing the grass mowing head, and the annular accommodating groove is coaxial with the output shaft. The end of the anti-wind sheath extends into the annular receiving groove.
The side of the grass cutting head shell where the anti-winding sheath is located is parallel to the side of the gear box shell where the annular accommodating groove is located.
As shown in fig. 1 and 2, the grass winding and cutting device comprises a guide hole 5.0 which is arranged on the anti-winding sheath and extends along the radial direction of the output shaft, a sliding rod 5.1 which is arranged in the guide hole in a sliding way, and an eccentric wheel sleeve 5.2 which is arranged on the side surface of the gear box shell facing the grass cutting head.
The eccentric wheel sleeve and the gear box shell are of an integrally formed structure. The eccentric wheel sleeve is positioned on the inner side of the anti-winding sheath, and the axis of the eccentric wheel sleeve is parallel to the axis of the output shaft.
The first end of the sliding rod is positioned on the inner side of the anti-winding sheath, and the end face of the first end of the sliding rod is provided with a ball 5.3. The second end of the sliding rod is positioned on the outer side of the anti-winding sheath, and a cutting knife 5.4 is arranged on the end face of the second end of the sliding rod. The cutting edge of the cutting knife is parallel to the axis of the output shaft.
The outer side surface of the sliding rod is provided with a containing groove 5.5 which extends along the radial direction of the output shaft. The first end of holding tank is close to the first end of slide bar, and the second end of holding tank is close to the second end of slide bar. Be equipped with on the inboard face of guiding hole with holding tank matched with stopper 5.6, the stopper is located the holding tank.
Still be equipped with slide bar reset spring 5.7 in the holding tank, slide bar reset spring holds the same one side that is located the stopper with the second of slide bar. One end of the sliding rod reset spring is abutted to the limiting block, and the other end of the sliding rod reset spring is abutted to the end face of the second end of the accommodating groove.
When the limiting block is abutted to the end face of the first end of the accommodating groove, the distance between the first end of the sliding rod and the output shaft is larger than the maximum distance between the outer side face of the eccentric wheel sleeve and the output shaft.
This embodiment is through setting up at antiwind sheath and annular holding tank, and the output shaft is located the antiwind sheath, and in the tip of antiwind sheath stretched into annular holding tank, so can avoid the lawn mower at the course of the work, on some weeds can directly twine the output shaft between gear box shell and the first shell of beating grass, the first load of beating grass appeared increasing, the rotational speed descends, causes the output shaft card to die even, damages the problem of machine.
On the other hand, although the anti-winding sheath can avoid weeds from being directly wound on the output shaft, the problem that the output shaft is blocked is effectively reduced, a user finds a new problem in the actual use process, namely, the problems that the weeds are wound on the anti-winding sheath, the grass mowing head load is increased, and the rotating speed is reduced still occur, and therefore the inventor further designs the grass winding cutting device.
Under the condition that the anti-winding sheath is internally provided with wound weeds, the limiting block is abutted against the end face of the first end of the accommodating groove under the action of the return spring of the sliding rod, at the moment, the first end of the sliding rod is separated from the eccentric wheel sleeve, and the first end of the sliding rod is not contacted with the eccentric wheel sleeve in the rotation process of the grass mowing head, so that the phenomenon that the supporting rotation of the grass mowing head is influenced due to the increase of the load of the grass mowing head caused by the arrangement of the wound grass cutting device can be avoided;
after weeds winding antiwind sheath appearing, partly weeds can be directly cut off by the cutting off cutter, but still partly weeds continue to twine on the antiwind sheath, because the winding power of holding tightly of weeds, the slide bar will move toward the output shaft direction along the guiding hole, after the slide bar removes a section distance, the lateral surface of the eccentric wheel cover will beat on being equipped with the ball on the terminal surface of the first end of slide bar at the rotatory in-process of grass mowing head, thereby force the quick past outwards of slide bar to shift out, directly cut off the weeds of winding on the antiwind sheath through the cutting off cutter from, avoid too much weeds to continue to twine on the antiwind sheath, cause the first load of grass mowing to increase, the problem of rotational speed decline.
Claims (5)
1. A grass mower that prevents grass from tangling a grass cutting head, comprising:
the gear transmission box comprises a gear box shell and an output shaft;
the grass mowing head comprises a grass mowing head shell fixed on an output shaft; it is characterized in that the utility model is characterized in that,
an anti-winding sheath is arranged on one side surface of the grass cutting head shell facing the gear box shell, the output shaft is positioned in the anti-winding sheath, the anti-winding sheath is coaxial with the output shaft,
an annular accommodating groove matched with the anti-winding sheath is formed in one side face of the gear box shell facing the grass mowing head, and the end part of the anti-winding sheath extends into the annular accommodating groove;
also comprises a grass winding cutting device, the grass winding cutting device comprises a guide hole which is arranged on the anti-winding sheath and extends along the radial direction of the output shaft, a sliding rod which is arranged in the guide hole in a sliding way, and an eccentric wheel sleeve which is arranged on the side surface of the gear box shell facing the grass cutting head,
the eccentric wheel sleeve is positioned at the inner side of the anti-winding sheath, the axis of the eccentric wheel sleeve is parallel to the axis of the output shaft,
the first end of the sliding rod is positioned on the inner side of the anti-winding sheath, and the end face of the first end of the sliding rod is provided with a ball; the second end of the sliding rod is positioned on the outer side of the anti-winding sheath, and a cutting knife is arranged on the end face of the second end of the sliding rod;
the outer side surface of the sliding rod is provided with a containing groove extending along the radial direction of the output shaft, the first end of the containing groove is close to the first end of the sliding rod, the second end of the containing groove is close to the second end of the sliding rod, the inner side surface of the guide hole is provided with a limiting block matched with the containing groove, the limiting block is positioned in the containing groove, a sliding rod reset spring is further arranged in the containing groove, the sliding rod reset spring and the second end of the sliding rod are positioned on the same side of the limiting block, one end of the sliding rod reset spring abuts against the limiting block, and the other end of the sliding rod reset spring abuts against the end surface;
the anti-winding sheath and the grass mowing head shell are of an integrally formed structure.
2. The grass mower of claim 1 wherein the distance between the first end of the sliding bar and the output shaft is greater than the maximum distance between the outer side of the eccentric sleeve and the output shaft when the stop abuts the end surface of the first end of the receiving groove.
3. The grass trimmer of claim 2, wherein the cutting edge of the cutting blade is parallel to the axis of the output shaft.
4. A grass mower as claimed in claim 1, 2 or 3 wherein the side of the grass mowing head housing on which the anti-wind guard is located is parallel to the side of the gear housing on which the annular receiving groove is located.
5. A grass mower as claimed in claim 1, 2 or 3 and adapted to prevent grass from becoming entangled around the grass-mowing head, wherein said grass-mowing head further comprises a rope pulley disposed within the grass-mowing head housing and a grass-mowing cord looped around the rope pulley, the axis of the rope pulley being coincident with the axis of the output shaft, the grass-mowing head housing being provided with a cord hole through which an end of the grass-mowing cord extends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810752878.9A CN108934473B (en) | 2018-07-10 | 2018-07-10 | Grass cutter capable of preventing grass from winding and beating head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810752878.9A CN108934473B (en) | 2018-07-10 | 2018-07-10 | Grass cutter capable of preventing grass from winding and beating head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108934473A CN108934473A (en) | 2018-12-07 |
| CN108934473B true CN108934473B (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810752878.9A Active CN108934473B (en) | 2018-07-10 | 2018-07-10 | Grass cutter capable of preventing grass from winding and beating head |
Country Status (1)
| Country | Link |
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| CN (1) | CN108934473B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111972114B (en) * | 2020-07-21 | 2021-08-24 | 浙江中力工具制造有限公司 | Grass trimmer |
| CN112753352B (en) * | 2021-01-13 | 2021-10-22 | 郑州航空工业管理学院 | Intelligent municipal garden collection device that mows |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619064A1 (en) * | 1993-04-06 | 1994-10-12 | Country Home Products, Inc. | Anti-wrap device for rotating shaft |
| CN202979667U (en) * | 2013-01-05 | 2013-06-12 | 永康市威力园林机械有限公司 | Grass cutter of lawn mower |
| CN204796202U (en) * | 2015-06-26 | 2015-11-25 | 刘大刚 | Effectively prevent winding lawn mower of weeds |
| CN105519302A (en) * | 2014-10-23 | 2016-04-27 | 南京德朔实业有限公司 | Grass trimmer and rotating component thereof |
| CN207185216U (en) * | 2017-03-31 | 2018-04-06 | 上海沃施园艺股份有限公司 | A kind of grass-winding proof work head of grass-mowing machine |
| CN208624115U (en) * | 2018-07-10 | 2019-03-22 | 浙江中力工具制造有限公司 | A kind of grass trimmer of anti-grass winding moving head |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7111404B2 (en) * | 2003-07-30 | 2006-09-26 | Honda Motor Co., Ltd. | Shield apparatus for power trimmer |
| US9872430B2 (en) * | 2014-12-01 | 2018-01-23 | Aero-Flex Technologies, Inc. | Anti-wind/anti-wrapping assembly for trimmers |
-
2018
- 2018-07-10 CN CN201810752878.9A patent/CN108934473B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619064A1 (en) * | 1993-04-06 | 1994-10-12 | Country Home Products, Inc. | Anti-wrap device for rotating shaft |
| CN202979667U (en) * | 2013-01-05 | 2013-06-12 | 永康市威力园林机械有限公司 | Grass cutter of lawn mower |
| CN105519302A (en) * | 2014-10-23 | 2016-04-27 | 南京德朔实业有限公司 | Grass trimmer and rotating component thereof |
| CN204796202U (en) * | 2015-06-26 | 2015-11-25 | 刘大刚 | Effectively prevent winding lawn mower of weeds |
| CN207185216U (en) * | 2017-03-31 | 2018-04-06 | 上海沃施园艺股份有限公司 | A kind of grass-winding proof work head of grass-mowing machine |
| CN208624115U (en) * | 2018-07-10 | 2019-03-22 | 浙江中力工具制造有限公司 | A kind of grass trimmer of anti-grass winding moving head |
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| Publication number | Publication date |
|---|---|
| CN108934473A (en) | 2018-12-07 |
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Denomination of invention: Lawn mower with anti grass winding head Effective date of registration: 20221031 Granted publication date: 20200228 Pledgee: Lishui Jinyun Sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG ZHONGLI TOOLS MANUFACTURE Co.,Ltd. Registration number: Y2022980020218 |