JP2004357655A - Protective cover for mowing machine and mowing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective cover for a mowing machine that has high safety because of its excellent visibility and can readily detachable and adaptive to a variety of grass height and a mowing machine covered with the same. <P>SOLUTION: The protective cover is equipped with a circular rotary blade and a shaft part that is obliquely attached to the rotary blade and has the first protective part 2 that covers almost semicircular part on the side where the shaft part is obliquely attached to the rotary blade and the second protective part 3 that covers the remaining semicircular part with a rake-shaped cover in which the first protective part 2 is equipped with a fixing part 5 that can hold the shaft part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a protective cover for a mower and a mower, and more particularly to a protective cover and a mower having high safety and high working efficiency.
[0002]
[Prior art]
In general, a mower having a rotary blade can remove a large amount of weeds in a short time, and is widely used not only by specialists but also by ordinary households. However, a rotating blade that rotates at a high speed not only poses a risk to the worker's feet, but also has a high possibility of causing danger to the surroundings due to flinging of cutted weeds and pebbles that are lost in the weeds. Therefore, protective equipment for performing such dangerous work more safely has been considered.
[0003] For example, in Patent Document 1, as a "weed root and weed processing rotary disk", a fixed rod device and a weed root processing plate are attached to a circular rotary disk, and weed roots and weeds are removed by the rotating power of a mowing machine. An apparatus for processing "is disclosed.
In the invention disclosed in Patent Document 1, by installing a scattered matter prevention cover, human bodies, crops, fruits, and the like can be removed from scattered matters such as earth and sand, stones and lumps caused by rotation of a fixed rod device or a weed root treatment plate. Injury and damage can be prevented.
[0004] Patent Document 2 discloses a "mowing machine" that includes a "rotary cutting blade driven by an electric motor to cut grass by rotating, and a protective cover provided to cover the periphery of the rotary cutting blade. A mowing machine provided with a movable piece that slides on the inner surface of the protective cover by being operated from the outside of the protective cover.
According to the invention disclosed in Patent Document 2, a protective cover provided to cover the periphery of the rotary cutting blade prevents pebbles and the like, which are thrown together with the cut grass, from scattering toward the worker, and furthermore, the protective cover By operating the movable piece provided on the inner surface, it is possible to safely and easily remove the grass adhered and accumulated in the protective cover without the operator's hand touching the rotary cutting blade.
[0005] Patent Document 3 discloses, as an "electric washing machine to which a mowing machine is applied", "a sprinkling pipe is fixed to an operating can of a mowing machine, a joint fitting is attached to a sprinkling pipe water supply port, and a dedicated hose is connected to the sprinkling pipe. A gear, bearing, and cleaning brush are attached to the rotating shaft with a nut, and the brush is rotated by the motor by interlocking with the gear attached instead of the mowing blade, further supporting the rotating shaft. An electric washer using a mower in which a bracket is connected to a drive gear built-in box is disclosed.
In the invention disclosed in Patent Literature 3, an electric washing machine to which the structure of a mowing machine is applied facilitates washing of high places such as a box-shaped truck, a bus, and a fence, and further, covers an entire upper surface of the washing brush. A cover has been attached to prevent water splashing during work.
[0006] Patent Document 4 discloses, as a "mower", a "mower equipped with a disc-shaped rotary blade at its tip, which receives cut grass cut by the rotary blade and is provided on the outside of the rotary blade. It is characterized in that a grass receiving guide for a guiding strip or wire plate is provided on the main shaft above the rotary blade so as to be changeable in height, and a safety cover is provided above the grass receiving guide on the main shaft so as to be changeable in height. Mowers "are disclosed.
According to the invention disclosed in Patent Literature 4, the grass receiving guide attached to the mower receives the cut grass that has been cut and scattered by centrifugal force and drops the grass, so that the cut grass can be aligned and the mowing can be performed. The work of sweeping grass later can be omitted. Further, since a safety cover is provided above the grass receiving guide, scattering of stones and the like can be prevented. Furthermore, since the height of the grass receiving guide and the safety cover can be changed, it is possible to cope with various cutting heights while ensuring safety.
[0007]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 9-220013 [Patent Document 2]
JP-A-9-121646 [Patent Document 3]
JP 2001-38307 A [Patent Document 4]
JP-A-11-220922
[Problems to be solved by the invention]
However, in the prior art described in Patent Document 1, the flying object prevention cover is attached by screwing a thumbscrew into a plurality of adjustment holes according to the size and purpose of the circular turntable, but there are many adjustment holes. There is a problem that the mounting position is easily mistaken and the mounting is complicated. In addition, since the scattered object prevention cover is covered over the entire circumference of the turntable, there is a problem that visibility during work is poor. Furthermore, it is necessary to introduce the grass to be mowed into the inside of the cover, and there is a problem that it is not suitable for high-length mowing.
Further, in Patent Literature 2, although the shape of the protective cover is not limited, a semicircular protective cover is clearly shown at a portion corresponding to the foot side of the worker. Can prevent the scattering of pebbles and the like to surrounding people and buildings.
Further, in the prior art described in Patent Document 3, a cover is attached so as to cover the entire upper surface of the circular cleaning brush, which is effective for preventing water splash during cleaning. There was a problem that visibility was poor in the machine. In addition, if there is a cover over the upper surface of the rotary blade in the mower, it is difficult to cut tall grass, and there is also a problem that it is not possible to cope with mowing of various heights as in the invention disclosed in Patent Document 1. .
In the related art described in Patent Document 4, the safety cover can cope with various cutting heights by changing the height position, but the safety cover is scattered because it is installed above and away from the rotary blade. There was a problem that all the pebbles and the like could not be received and the safety was inferior.
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a good visibility, a high degree of safety, and a protective cover and a mowing machine for a mowing machine which can be easily mounted and can cope with various grass heights. The purpose is to provide.
[0011]
[Means for Solving the Problems]
To achieve the above object, a mowing machine according to the first aspect of the present invention is a protective cover for a mowing machine provided with a circular rotary blade and a shaft portion obliquely provided on the rotary blade, wherein the rotary blade has a shaft portion. And a first protection portion that is provided to cover the substantially semicircle on the side where the is inclined, and a rake-like configuration that is provided to the first protection portion and that covers the remaining substantially semicircle. A second protection part, and the first protection part includes a fixing part capable of gripping the shaft part.
The protection cover for a mower having the above configuration has an effect that an operator holding the shaft portion is protected by the first protection portion, and the periphery is protected by the second protection portion. In addition, since the second protection portion has a rake shape, at the same time as securing the visibility of the worker, when mowing grass higher than the height of the rake shape protection portion, the second protection portion can be easily inserted into the rake-shaped gap. It has the effect of introducing grass, preventing grass and its stem from escaping from the rotary blade, and facilitating cutting. Further, the first protection portion has an effect of being attached to the shaft portion by the fixing portion.
According to a second aspect of the present invention, in the protective cover for a mower according to the first aspect, the second protective portion is detachably attached to the first protective portion. It is provided.
The protection cover for a mower having the above configuration has an effect that the second protection portion can be freely attached to and detached from the first protection portion in addition to the effect of the first aspect of the invention.
According to a third aspect of the present invention, there is provided a lawn mower protection cover for a lawn mower having a circular rotary blade and a shaft inclined to the rotary blade. The protection section is provided with a fixing section capable of gripping the shaft section.
The mowing machine protective cover having the above-described configuration has an effect of protecting the worker and the surroundings in a state where the visibility of the worker is secured because the protection portion is in the shape of a rake. Further, it has an effect of being mounted on the shaft portion by the fixing portion. Further, similarly to the first aspect of the present invention, it has the effect of preventing grass and its stem from escaping from the rotary blade and facilitating cutting.
According to a fourth aspect of the present invention, there is provided a mower according to any one of the first to third aspects, and a rotary blade covered with the mower protective cover. The rotary blade has a shaft portion having one end inclined, and a power portion of the rotary blade provided at the other end of the shaft portion.
The mower having the above-described configuration protects the worker and the surroundings by installing the protective cover for the mower according to any one of claims 1 to 3, while ensuring visibility of the worker. It has the effect of performing mowing work while doing so.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a mower protection cover according to the present invention will be described below with reference to FIGS. (Corresponding to claims 1 to 3)
FIG. 1 is an outline view of a protective cover for a mower according to the present embodiment.
In FIG. 1, a mower protector cover 1 comprises a semicircular rear protector 2 and a rake-shaped front protector 3. The rear protective cover 2 is mounted on a semicircular semi-disc 4 having an edge capable of covering an upper surface and a side surface of a substantially half circumference of a rotary blade of the mower, and a fixing tool 5 for mounting to a shaft of the mower. And two rear mounting holes 6 for mounting the front protection cover 3 are provided at two locations at the end.
The fixing tool 5 has a shaft of the mower sandwiched between the upper mounting plate 7 and the lower mounting plate 8, is screwed with a bolt (not shown), and is fixed with a nut. The lower mounting plate 8 is pivotally mounted on the pedestal 9 so that the angle can be changed about the pin 10 as an axis. By tightening the pin 10, the changed angle can be fixed.
Since the fixing tool 5 is attached by bolting, it can be easily mounted on an existing mower. Furthermore, since the angle of the lower mounting plate 8 can be changed, it is possible to cope with mounting on a mower having a different mounting angle of the shaft.
If the upper mounting plate 7 and the lower mounting plate 8 are provided with rubber or the like on the inside, slip is prevented, and the shaft can be more firmly fixed. Further, although not shown, if the size adjustment mounting plate is fitted inside the upper mounting plate 7 and the lower mounting plate 8, the mounting can be performed even if the shafts have different thicknesses. In addition, you may use a thumb screw etc. other than a bolt as a fixing means.
On the other hand, in the front protection cover 3, a plurality of vertical protection plates 12 are mounted on a semicircular base 11 in a rake shape so as to cover substantially half the circumference of the rotary blade of the mower. Two front mounting holes 13 for mounting on the rear protective cover 2 are provided at two places in the section. Although not shown, since the rear mounting hole 6 and the front mounting hole 13 are connected by bolts and nuts, the rear mounting hole 6 and the front mounting hole 13 can be easily attached and detached. It can be used properly depending on the application. The same applies to the rear mounting holes 6, but the number of front mounting holes 13 is not limited.
Further, the front protection cover 3 may have an integrated rake-shaped protection cover structure in which the front protection cover 3 is not attached to or detached from the rear protection cover 2, and in this case, the mounting on the mower becomes simple.
The operation of the mower protection cover will now be described with reference to FIG.
FIG. 2A is a top view when the protection cover for the mower according to the present embodiment is mounted on the mower, and FIG. 2B is a side view when the protection cover for the mower is mounted on the mower. It is.
2 (a) and 2 (b), the rear protective cover 2 of the mower protector 1 has an upper mounting plate 7 and a lower mounting plate 8 of a fixture 5, which hold the shaft 14 of the mower, and which are provided with four bolts. It is fixed at 15 and attached to the mower. The front protection cover 3 is connected to the rear protection cover 2 by screwing two bolts 16 into the front mounting hole 13 and the rear mounting hole 6 respectively. Further, the rotary blade 17 can be seen from a gap between the plurality of vertical protection plates 12.
As shown in FIGS. 2 (a) and 2 (b), when the mower protection cover 1 is mounted on the mower, the rear protection cover 2 is located on the shaft 14, that is, on the foot side of the worker. The rotation blade 17 that rotates at a high speed during the mowing operation prevents damage to the feet of the operator and the entanglement of clothing, etc., and prevents scattering of pebbles and the like, which is repelled by the rotation blade 17, from being hardly prevented inside the semi-disc 4. Work can be done.
On the other hand, the front protection cover 3 is located farther away from the worker than the rear protection cover 4 and is mainly covered by the rotary blade 17 on the side of cutting grass, but has a rake-like shape. Therefore, the work can be performed while checking the rotary blade 17 and its surroundings from the gap, and it is possible to avoid obstacles or the like that may damage the rotary blade 17 or work on soil with a lot of pebbles at an early stage. is there.
In addition, the plurality of vertical protection plates 12 of the front protection cover 3 can suppress the scattering of pebbles or the like in a direction other than directly above, so that high security against the surroundings can be ensured.
Further, each vertical protection plate 12 has a hook shape, and a flat portion is vertically attached to the base 11. The front protective cover 3 is suitable for removing tall grass, and can easily introduce grass and grass stalks into gaps widely provided between the vertical protective plates 12, so that the vertical protective cover 3 can be removed. The plate 12 serves as a grass support plate, which prevents the grass from bending or escaping, facilitates cutting by the rotary blade 17, and as a result, can increase work efficiency.
The mower protector cover 1 is a circular cover that covers the entire periphery of the rotary blade 17 with the rake-shaped vertical protective plate 12 like the front protector cover 3 without the rear protector cover 2. The fixing portion 5 may be provided on the circular cover and attached to the shaft 14. In this case, as compared with the case where the rear protective cover 2 and the front protective cover 3 are designed to be detachable, there is an advantage that the mounting to the mower is reduced from two stages to one stage, and the mounting is simplified. Although the prevention of scattering of pebbles and the like is somewhat inferior, the operator can visually recognize the rotary blade 17 and its surroundings over the entire circumference.
Next, a modification of the front protection cover will be described with reference to FIG.
FIG. 3 is an external view of a modification of the front protection cover of the mower protection cover according to the present embodiment.
In FIG. 3, the front protective cover 3 has a base 11 on which a plurality of horizontal protection plates 18 are mounted in a rake shape, and two front mounting holes 13 are provided at the end of the base 11. .
When the front protection cover 3 is connected to the rear protection cover using the front mounting hole 13, the front protection cover 3 becomes a protection cover for a mower. When the mower protection cover is attached to the mower, the rotary blade of the mower and the vicinity of the rotary blade can be seen from the gap between the plurality of horizontal protection plates 18 provided in a rake shape of the front protection cover 3. It can be done while checking the work.
The horizontal protective plate 18, each of which has a hook shape, has its plane portion provided in parallel with the base 11, and has a large area covering the rotary blade, so that more pebbles and the like are prevented from scattering. Can be. The front protection cover 3 provided with the horizontal protection plate 18 has a small gap between the horizontal protection plates, and is suitable for removing grass with a short height or grass with a small stem.
Therefore, if the front protection cover with the vertical protection plate and the horizontal protection plate shown in FIG. 1 is prepared, it is removable and can be selected according to the type and state of the grass to be mowered. Therefore, the working efficiency can be freely improved.
Next, a modification of the fixture will be described with reference to FIG.
FIG. 4 (a) is a side view when the protection cover for mowing machine according to the present embodiment is mounted on a shaft having a large mounting angle, and FIG. It is a side view at the time of wearing.
4A and 4B, the fixture 5 is provided with an angle adjusting joint 19. The angle adjusting joint 19 is pivotally provided by the pin 20 on the lower mounting plate 8 side and the pin 21 on the pedestal 9 side, so that the angle can be changed widely with the pins 20 and 21 as axes. Therefore, it can be mounted on a mower having a large shaft mounting angle θ as shown in FIG. 4A or a mowing machine having a small shaft mounting angle θ as shown in FIG. 4B.
Although the rear protective cover 2 can be mounted on a mower having a different shaft mounting angle θ even when the angle adjusting joint 19 is not installed as described above, the provision of the angle adjusting joint 19 allows a wider shaft mounting. Can correspond to the angle θ.
In the mowing machine protective cover 1 thus constructed, during mowing, the rear protective cover 2 protects the foot of the operator from the rotary blade and prevents scattering of pebbles and the like hit by the rotary blade. be able to. In addition, the front protection cover 3 prevents scattering of pebbles and the like by the rotary blade, and the vertical protection plate 12 or the horizontal protection plate 18 provided in a rake shape improves visibility of the rotary blade 17 and the periphery thereof, Accidents can be avoided beforehand when working on dangerous soil.
Further, since the front protection cover 3 is detachable from the rear protection cover 2, the front protection cover 3 provided with the vertical protection plate 12 or the front protection cover 3 provided with the horizontal protection plate 18 is selected. By exchanging, efficient work can be performed according to the plant height.
The rear protective cover 2 can be easily attached to the mower by the fixing device 5, and the fixing device 5 is designed to be adjustable in angle with respect to the mounting angle of the shaft. Can respond.
Finally, an embodiment of a mower according to the present invention will be described with reference to FIG. (Corresponding to claim 4)
FIG. 5 is an outline view of the mower according to the present embodiment.
In FIG. 5, the mower 22 has the mower protective cover 1 covering the rotary blade 17 and attached to the shaft 14 by the fixture 5. A handle 23 is installed above the shaft 14, and a motor 24 for rotating the rotary blade 17 is connected to an end of the handle 23.
The worker mows the mowing machine 22 by suspending the mower 22 from the shoulder by a strap or the like, grasping the handle 23, operating the motor 24, and rotating the rotary blade 17 (not shown). Since the cover 1 is mounted, the rear protective cover 2 protects the worker from damage by the rotary blade and scattering of pebbles and the like, and the front protective cover 3 prevents scattering of pebbles and the like to the surroundings. In addition, since the visibility is secured for the worker by the front protection cover 3, the work can be safely performed. Further, when the front protection cover 3 is detachably provided, the front protection cover 3 can be selected according to the type and state of the grass to be cut, and variations that can improve the working efficiency can be provided.
[0028]
【The invention's effect】
As described above, in the protective cover for a mower according to the first and second aspects of the present invention, the safety at the foot side of the worker is ensured by the first protective part, and the second protective part is used by the second protective part. It ensures the visibility of workers and the safety around them.
The fixing portion provided on the first protection portion facilitates mounting on the mower, and can be mounted on a mower having a different mounting angle of the shaft portion.
Further, in the protective cover for a mower according to the second aspect of the present invention, the second protective portion is detachable from the first protective portion, so that the second protective portion having a different shape is selected. By doing so, work can be performed according to the plant height.
In the protective cover for a mower according to the third aspect of the present invention, since the rake-shaped protective portion is provided over the entire circumference of the rotary blade of the mower, scattering of pebbles and the like is suppressed. Particularly, the visibility is improved.
Finally, in the mower according to the fourth aspect of the present invention, the protective cover for the mower according to any one of the first to third aspects is mounted, so that the worker and the surroundings are provided with the protective cover for the mower. In addition, the worker can perform the mowing work safely while maintaining the visibility.
[Brief description of the drawings]
FIG. 1 is an external view of a protective cover for a mower according to an embodiment of the present invention.
FIG. 2 (a) is a top view when the mower protection cover according to the present embodiment is mounted on the mower, and FIG. 2 (b) is a case where the mower protective cover is also mounted on the mower. It is a side view.
FIG. 3 is an external view of a modified example of the front protective cover of the mower protection cover according to the present embodiment.
FIG. 4 (a) is a side view of the case where the protective cover for a mower according to the present embodiment is mounted on a shaft having a large mounting angle, and FIG. It is a side view at the time of attaching to a shaft.
FIG. 5 is an external view of the mower according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Protective cover for mowing machine 2 ... Rear protective cover 3 ... Front protective cover 4 ... Semi-disc 5 ... Fixture 6 ... Rear mounting hole 7 ... Upper mounting plate 8 ... Lower mounting plate 9 ... Pedestal 10 ... Pin 11 ... Board DESCRIPTION OF SYMBOLS 12 ... Vertical protection plate 13 ... Front mounting hole 14 ... Shaft 15 ... Bolt 16 ... Bolt 17 ... Rotating blade 18 ... Horizontal protection plate 19 ... Angle adjustment joint 20 ... Pin 21 ... Pin 22 ... Mowing machine 23 ... Handle 24 ... Motor θ ... Shaft mounting angle

Claims (4)

A protection cover for a mowing machine provided with a circular rotary blade and a shaft inclined to the rotary blade, wherein the rotary blade is covered over a substantially semicircle on a side where the shaft is inclined. A first protection portion, and a second protection portion provided on the first protection portion and covered in a rake shape over the remaining substantially semicircle, wherein the first protection portion is A protection cover for a mower, comprising a fixing portion capable of gripping the shaft portion. The said 2nd protection part is provided in the 1st protection part so that attachment or detachment is possible, The protection cover for mowing machines of Claim 1 characterized by the above-mentioned. A protective cover for a mowing machine having a circular rotary blade and a shaft portion obliquely provided on the rotary blade, the protective cover having a rake-shaped cover on the rotary blade, wherein the protective portion includes the shaft. A protective cover for a mower, comprising a fixing portion capable of gripping the portion. A mower protective cover according to any one of claims 1 to 3, a rotary blade covered by the mower protective cover, and a shaft part having one end inclined to the rotary blade. And a power unit of a rotary blade provided at the other end of the shaft.

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