KR100623191B1 - Multiplex weeder - Google Patents

Abstract

The present invention relates to a composite mower, and more particularly, a sector gear upper and lower cutters having gear cutting edges formed on the circumference of the upper and lower cutter plates formed in a fan shape are eccentrically mounted on one axis. The cutting blades can be reciprocated slightly in the opposite direction to cut the weeds and the branches flowing between the cutting blades of the upper and lower cutters, and a safety roller is installed at the ends of the plurality of cutting blades, so Even if the part is in contact with the body does not damage the body, and the saw blade portion with a narrow gap of the cutting teeth in front of the upper and lower cutters to cut the wood such as tree branches.

In the lawn mower according to the present invention, a mower is detachably installed at a distal end of a work rod installed in a lawnmower, and is driven by receiving power generated from an engine of the lawnmower through a rotating shaft inside the work rod,

A housing having a drive gear engaged with the rotation shaft therein; An upper cover on which the lower part of the housing is seated; A rotating shaft having one side supported by the housing, a driven gear meshing with the drive gear at an upper portion thereof, and a power transmission gear disposed at a lower portion thereof; A square shaft portion having a movable gear engaged with the power transmission gear of the rotary shaft at an upper portion thereof and having an upper and lower cams inserted therein; An upper and lower cutters formed with upper and lower cam grooves into which the upper and lower cams are inserted and overlapping with the rear center portion fixed to the hinge pins; Consists of the upper cover and the lower cover to be spaced apart by a predetermined interval, the cutting edge is to be able to safely cut the weeds or branches flowing between the cutting edges of the upper and lower cutters while reciprocating slightly in the opposite direction.

Mowers, Grass, Branches, Flexible Shafts, Combined Mowers, Sector Gear Type, Cam

Description

Multiple weeder

1 is a side view showing the installation of the present invention.

Figure 2 is a perspective view showing an embodiment of a composite weeder according to the present invention.

3 is a side cross-sectional view of the present invention shown in FIG.

Figure 4 is a partially exploded perspective view showing a partially separated upper and lower cutters that are the main components of the present invention.

5 is a cross-sectional view showing a power transmission relationship of the present invention.

6 (a) (b) (c) is an operational state diagram showing that the upper and lower cutters of the present invention reciprocate left and right by the upper and lower cams.

7 is a plan view showing an embodiment of the present invention.

8 is a plan view showing a third embodiment of the present invention.

9 is a cross-sectional view taken along the line A-A of FIG.

<Explanation of symbols for the main parts of the drawings>

1: mower 2: engine 3: working rod

4: rotating shaft 5: compound weeding machine 6: working rod connector

7 housing 8 driven gear 9 power transmission gear

10: rotation shaft 11: drive gear 12: coupling portion

13 drive shaft 14 bearing 15 upper cover

16: square shaft portion 17: movable gear 18: lower cover

19: upper cutter 20: lower cutter 21: hinge pin

22: upper cutter plate 22a: lower cutter plate 23, 23a: hinge hole

24, 24a: cutting edge 25, 25a: space 26: upper cam groove

26a: lower cam groove 27: guide hole 28: pin hole

29,29a: Square groove 30: Upper cam 30a: Lower cam

31: safety roller 32,32a: saw blade 33,33a: cutting teeth

The present invention relates to a compound mower, and more particularly, the present invention relates to a compound mower, and more particularly to a sector gear type upper and lower cutters in which a cutting blade in the form of gears is formed on the circumference of the upper and lower cutter plates formed in a fan shape. The upper and lower cutting edges are reciprocated slightly in opposite directions by the cams eccentrically installed on one axis, so that weeds and twigs flowing between the cutting edges of the upper and lower cutters can be cut, and the ends of the plurality of cutting edges A safety roller is installed at the part so that if the tip of the cutting blade comes into contact with the body, it does not damage the body, and the saw blade with a narrow gap of the cutting teeth is formed in front of the upper and lower cutters to cut wood such as tree branches. It is to make it possible.

Applicant of the present invention has been filed a patent application for a mower that allows the weeds introduced between the upper and lower blades reciprocating while the upper and lower blades formed in the form of a fan blade reciprocated.

The weeding machine (Patent Application No. 1999-50875) has a large number of blades are formed in the form of a fan blade, a serious problem that the blade is easily damaged when the blade and the hard weeding work, and the blade blade shape Although the cutting force is excellent as it is formed at the end of the cutting blade while being formed long, there is a safety problem that causes a great injury to the body even if the tip of the blade touches another worker's body.

In addition, the movable body is installed in the blade is installed so that the angle can be adjusted to the fixed body is installed inside the eccentric shaft for reciprocating the blade is connected to the universal joint. Therefore, the front part of the mower, in which the fan blade-shaped blade is installed, is formed in a cylindrical shape with a large diameter, and its weight is heavy. there was.

In order to solve the above problems, the upper and lower cutting edges of the upper and lower cutters of the sector gear type formed with the gear-shaped cutting edges on the circumference of the upper and lower cutter plates formed in a fan shape are eccentrically installed on one axis. The technical problem is to allow the weeds and branches to be introduced between the cutting edges of the upper and lower cutters while reciprocating slightly in opposite directions.

In addition, a safety roller is installed at the tip of the cutting edge so that the body is not damaged by the safety roller installed at the tip of the cutting edge even when the body of another worker comes into contact with the cutting edge when performing the weeding operation with the compound weeding machine of the present invention. In another embodiment, by forming a cutting tooth with a small pitch in front of the upper and lower cutters, as the saw blade portion between the cutting teeth is reciprocated from side to side, it is possible to cut wood such as tree branches, thereby combining wood and grass. Another technical problem is to make it possible to cut.

In the composite mower of the present invention for achieving the above object, in the mower, which is detachably installed at the distal end of the working rod installed in the lawn mower, and receives and drives the power generated from the engine of the lawn mower through the rotating shaft inside the working rod,
A housing having a drive gear engaged with the rotation shaft therein; An upper cover on which the lower part of the housing is seated; A rotating shaft having one side supported by the housing, a driven gear meshing with the drive gear at an upper portion thereof, and a power transmission gear disposed at a lower portion thereof; A square shaft portion having a movable gear engaged with the power transmission gear of the rotary shaft at an upper portion thereof and having an upper and lower cams inserted therein; An upper and lower cutters formed with upper and lower cam grooves into which the upper and lower cams are inserted and overlapping with the rear center portion fixed to the hinge pins; Characterized in that the upper cover and the lower cover is coupled to be spaced apart by a predetermined interval.
Here, the upper and lower cutters are formed with a hinge hole into which the hinge pin is inserted in the rear center of the upper and lower cutter plates formed in a fan shape, and a plurality of cutting edges are formed in the circumference of the upper and lower cutter plates in the form of gears, and the front of the hinge holes. On the upper and lower cutter plates of the upper and lower cam grooves having a long length in the front and rear directions are formed, and the upper and lower cutter plates overlapping each other are provided with support bolts for reciprocating from side to side while maintaining upper and lower cutter plates at regular intervals. A safety roller is coupled to the front end of the cutting edge by a pin.
In addition, a work rod connecting tube is formed to be inclined upwardly at the rear of the housing protruding from the upper portion of the upper cover, and a rotating gear having a driven gear at the upper portion and a power transmission gear at the lower portion thereof is vertically formed at the inner central portion of the housing. It is installed in the direction, the drive shaft is installed inside the working rod connecting pipe is provided with a drive shaft rotatably installed by a bearing having a coupling portion inserted into the insertion coupling portion of the rotary shaft on the other end.
In addition, a movable gear having a square shaft portion downwardly installed at the front lower portion of the upper cover is engaged with the power transmission gear, and a lower cover is installed at a lower portion of the upper cover at a spaced distance from the upper cover. The upper and lower cutters formed in a fan shape are hinged by a hinge pin installed between the upper and lower cover parts in a state where the upper and lower cutters overlap each other.
In addition, the upper and lower cam grooves are inserted into the upper and lower cams formed with an eccentric square groove into which the square shaft portion is inserted, and the upper and lower cams inserted into the upper and lower cam grooves overlapped with each other are installed so that the square shaft portions are inserted into overlapping square grooves in a staggered state. It is characterized by.
In addition, the upper and lower cutters are formed with a hinge hole into which a hinge pin is inserted at the rear center of the upper and lower cutter plates formed in a fan shape, and at the center of the circumferential portion of the upper and lower cutter plates, saw blades each having a plurality of cutting teeth are formed to protrude. A plurality of cutting edges are formed in the circumferential portion of the upper and lower cutter plates on both sides of the saw blade portion, and on the upper and lower cutter plates in front of the hinge hole, upper and lower cam grooves having long lengths in front and rear directions are formed, and The overlapping upper and lower cutter plates are characterized in that support bolts for reciprocating the left and right guides are installed while the upper and lower cutter plates maintain a constant interval.

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Hereinafter, the composite herbicide of the present invention will be described in detail with reference to FIGS. 1 to 9.

The composite weeding machine according to the present invention is detachably installed at the distal end of the working rod 3 installed in the lawn mower 1 as shown in FIG. 1, and the power generated by the engine 2 of the lawn mower 1 can be worked on the working rod 3. It is driven by being transmitted through the inner rotating shaft (4).

As shown in FIG. 3, at the rear of the housing 7 protruding from the upper center of the upper cover 15, the work bar connecting tube 6 to which the front end of the work rod 3 is fitted and coupled is formed to be inclined upward. In the inner central portion of the housing 7, a driven gear 8 is formed at an upper portion thereof, and a rotating shaft 10 provided with a power transmission gear 9 at a lower portion thereof is provided in a vertical direction.

In addition, a driving gear 11 that is engaged with the driven gear 8 is installed at one end of the rod connecting pipe 6, and a coupling part inserted into the insertion coupling part 4a of the rotation shaft 4 at the other end thereof. The drive shaft 13 provided with 12 is rotatably provided by the bearing 14. As shown in FIG.

A movable gear 17 in which the square shaft portion 16 is installed downward is installed at the front lower portion of the upper cover 15 to be engaged with the power transmission gear 9, and an upper cover 15 is disposed at the lower portion of the upper cover 15. The lower cover 18 is installed in a spaced apart state.

In addition, the hinge pins 21 are provided between the upper and lower cover parts 15 and 18, and the rear center parts overlapped with the upper and lower cutters 19 and 20 formed in a fan shape overlapping each other. It is hinged.

As shown in FIGS. 3 and 4, the upper cutter 19 has a hinge hole 23 into which the hinge pin 21 is inserted, at the rear center of the upper cutter plate 22 formed in a fan shape, and the upper cutter. A plurality of cutting edges 24 are formed in the form of gears at the circumference of the plate 22.

In addition, in the front of the hinge hole 23 of the upper cutter plate 22, a space 25 for inserting and operating the power transmission gear 9 is formed, and the upper cutter plate 22 in front of the space 25 is formed. The upper cam groove 26 having a long hole shape in the front and rear direction is formed on the upper side, and the plurality of guide holes 27 in the circumferential direction are formed in the upper cutter plate 22 inside the cutting edge 24. have.

3 and 4, the lower cutter 20 has a hinge hole 23a into which the hinge pin 21 is inserted, at the rear center of the lower cutter plate 22a formed in a fan shape. A plurality of cutting edges 24a are formed in the circumference of the lower cutter plate 22a in the form of gears.

In addition, a space portion 25a is formed in front of the hinge hole 23a of the lower cutter plate 22a to insert and operate the power transmission gear 9, and the lower cutter plate 22a in front of the space portion 25a. ), A lower cam groove 26a having a long length in the front-rear direction is formed, and the lower cutter plate 22a inside the cutting edge 24a has a pin hole corresponding to the plurality of guide holes 27 in the circumferential direction. 28) is formed.

The upper and lower cams (30, 30a) formed in the upper cam groove 26 and the lower cam groove (26a) in which the square grooves (29, 29a) into which the square shaft portion (16) is fitted are eccentrically coupled to each other. The upper and lower cams 30 and 30a which are respectively inserted in the state and inserted into the upper and lower cam grooves 26 and 26a overlapped with each other are arranged such that the square shaft portions 16 are inserted into the square grooves 29 and 29a overlapping with each other in an overlapping state. It is installed.

2 and 9, the cover plate 100 is covered on the upper surface of the upper cutter 19 in a state where the upper and lower cutters 19 and 20 overlap each other, and the upper cutters 19 corresponding to each other. A support bolt 27a penetrates through the guide hole 27, the pin hole 28 of the lower cutter 20, and the bolt hole of the cover plate 100, and is fastened as a nut 101.

In addition, as shown in FIGS. 2 and 3, the portion where the upper cover 15 and the upper and lower cutters 19 and 20 are coupled coincides with the guide hole 27 and the pin hole 28 of the upper and lower cutters 19 and 20. In the closed state, the upper surface of the guide hole 27 and the lower surface of the pin hole 28 were fastened as the support bolts 27a with the washer 102 interposed therebetween to install.

At this time, the support bolt (27a) is installed on the upper and lower cutters (19, 20) the length of the fastening portion is longer than the thickness of the upper and lower cutters (19, 20) and the cover plate 100 combined (with a washer 102 interposed) The upper and lower cutters 19 and 20 are not fastened by tightly tightening the upper and lower cutters 19 and 20 by fastening with a fastening portion of the support bolt rather than the thickness of the upper and lower cutters 19 and 20 combined with the upper and lower washers. It is only natural to loosely combine them so that there is a small gap between them.

Figure 7 shows this embodiment of the present invention because all of the configuration is the same as the embodiment and only differs in that the safety roller 31 is coupled to the front end of the plurality of cutting edges 24 by the pin 31a Detailed description of the same configuration as in one embodiment is omitted.

The three embodiments of the present invention shown in FIG. 8 are identical in configuration to one embodiment, but the third embodiment differs from the embodiment in that the saw blades 32 and 32a are placed in front of the upper and lower cutters 19 and 20. They are formed so as to protrude from each other, and a plurality of cutting teeth 33 and 33a are formed at the front end portions of the respective saw blade portions 32 and 32a.

Referring to Figures 1 to 9 attached to the working relationship of the composite mower according to the present invention having the above configuration as follows.

The composite weeding machine 5 of the present invention is detachably attached to the distal end of the working rod 3 of the lawn mower 1 as shown in FIGS. 1 and 3. Inside the working rod 3 is provided with a rotating shaft 4 which rotates by receiving power from the engine 2 of the lawn mower 1, and an insertion coupling portion 4a formed at the end of the rotating shaft 4; The coupling part 12 at the end of the drive shaft 13 of the hybrid mower 5 is connected so that the power generated by the engine 2 of the lawn mower 1 is driven through the rotary shaft 4 to the drive shaft 13 inside the hybrid mower 5. ) Will be driven.

As the driving shaft 13 is rotated as described above, the driving gear 11 of the driving shaft 13 and the driven gear 8 of the rotating shaft 10 vertically installed inside the housing 7 are engaged so that the rotating shaft 10 rotates. In addition, a movable gear 17 for reciprocating the upper and lower cutters 19 and 20 is engaged with the power transmission gear 9 provided at the lower end of the rotary shaft 10 so that the movable gear 17 rotates.

Square shaft portion 16 formed in the lower portion of the movable gear 17, as shown in Figure 5 to the rectangular groove 29 of the upper cam 30 is inserted into the upper cam groove 26, and the lower cam groove 26a ) Is inserted into the square groove 29a of the lower cam 30a inserted into the upper cam 30 and the lower cam 30a, respectively.

At this time, the upper and lower cams (30, 30a) are formed in a position where the square grooves (29, 29a) are eccentric, respectively, as shown in Figures 3 and 6, each of the square grooves (29, 29a) is a square shaft portion ( While 16) is inserted and coincided with each other, the upper and lower cams 30 and 30a are alternately overlapped and are arranged to be stepped in the form of a bucket. In addition, the upper upper cam 30 is inserted into the upper cam groove 26 and the lower lower cam 30a is inserted into the lower cam groove 26a.

Therefore, both of the upper and lower cams 30 and 30a are simultaneously rotated by the rotation of the square shaft portion 16. When the square shaft portion 16 rotates clockwise, the upper cam 30 is shown in FIG. As shown in the "a", the left side of the upper cam groove 26 is pushed to the left side, and the lower cam 30a at the lower side moves the right portion of the lower cam groove 26a to the right as shown by "b" in FIG. Boosted.

The upper and lower cam grooves 26 and 26a having upper and lower cam grooves 26 and 26a formed as the upper and lower cams 30 and 30a inserted together in the square shaft portion 16 push the upper and lower cam grooves 26 and 26a in opposite directions. 22a) are operated in opposite directions, and gear cutting edges 24 and 24a are formed on the outer peripheries of the top and bottom cutter plates 22 and 22a of the fan shape moving in opposite directions. Grass, such as weeds or grass, which enters between the cutting edges 24 and 24a is cut.

As described above, the upper and lower cams 30 and 30a are rotated in a peanut shape around the square shaft portion 16, and the upper and lower cams 30 and 30a are inserted into the upper and lower cam grooves 26 and 26a of the long hole shape. According to the upper and lower cutters (19, 20) is to reciprocate from side to side. At this time, the upper and lower cutter plates 22 and 22a have hinge pins 21 pin-coupled to the hinge holes 23 and 23a formed at the rear of the center, so that the upper and lower cutter plates 22 and 22a are centered on the hinge pins 21. It is able to reciprocate in opposite directions at a predetermined radius.

In addition, the upper and lower cutter plates 22 and 22a have guide holes 27 and pin holes 28 corresponding to each other, as shown in FIGS. 3 and 4, and the guide holes 27 and pin holes are formed. The support bolts 27a penetrate the 28 to support the upper and lower cutter plates 22 and 22a. When the upper and lower cutters 19 and 20 reciprocate in opposite directions, the upper and lower cutter plates 22 and 22a It is to be able to move in the opposite direction to each other at a constant interval without going apart.

And, in the case of this embodiment shown in Figure 7, all the configuration is the same except for the configuration of one embodiment and the safety roller 31 is installed so that the upper and lower cutters (19, 20) reciprocating in the opposite direction to each other cutting edge The cutting of grasses such as weeds and grass, which enters between 24 and 24a, is the same as in the embodiment.

In this embodiment, however, as shown in FIG. 7, the safety roller 31 is freely installed by the pin 31a at the tip of each cutting edge 24 so that the back of the other worker's foot or a part of the body A is located. Even when in contact with the body because the body is in contact with the round safety roller 31 will not be damaged.

Also in the case of the third embodiment shown in Figure 8 it is one embodiment that the upper and lower cutters (19, 20) reciprocating in the opposite direction to cut grass (grass), such as weeds or grass entered between the cutting edges (24, 24a) Since it is the same as, description of the operation thereof is omitted.

However, in the case of this embodiment, saw blades 32 and 32a protrude in front of the upper and lower cutters 19 and 20, respectively, and cutting teeth 33 and 33a respectively at the distal ends of the saw blades 32 and 32a. When the upper and lower cutters 19 and 20 reciprocate from side to side, the cutting teeth 33 and 33 a also reciprocate from side to side in opposite directions to contact the cutting teeth 33 and 33 a. I can cut the wood such as a tree branch to say.

The composite mower according to the present invention as described above, the upper and lower parts of the sector gear upper and lower cutters formed with a gear-shaped cutting edge formed on the circumference of the upper and lower cutter plates formed in a fan shape is eccentrically installed on one axis separately. Cutting edges reciprocate slightly in opposite directions, and weeds and twigs that flow between cutting edges of upper and lower cutters can be safely cut.

And, as another example, the safety roller is installed at the tip of the cutting edge, even when the body of another worker is in contact with the cutting edge when performing the weeding operation with the compound weeding machine of the present invention, only the safety roller installed at the cutting edge is in contact with the body. Since the cutting edge does not come into contact with the body, it is very safe that the body is not damaged.                     

In addition, in another embodiment, the cutting teeth having a narrow pitch interval are formed in front of the upper and lower cutters, so that the wood such as tree branches can be cut as the narrow blades between the cutting teeth move left and right. There is a very practical effect that can be cut with.

Claims (7)

The mower is detachably installed at the distal end of the working rod 3 installed in the lawn mower 1 and is driven to receive and drive the power generated by the engine 2 of the lawn mower 1 through the rotating shaft 4 inside the working rod 3. To A housing 7 having a drive gear 11 engaged with the rotation shaft 4 therein; An upper cover 15 on which a lower portion of the housing 7 is seated; A rotating shaft 10 having one side supported by the housing 7 and having a driven gear 8 engaged with the drive gear 11 at an upper portion thereof, and a power transmission gear 9 provided at a lower portion thereof; A square shaft portion 16 having a movable gear 17 engaged with the power transmission gear 9 of the rotary shaft 10 and having upper and lower cams 30 and 30a inserted therein; The hinge holes 23 and 23a into which the hinge pins 21 are inserted are formed in the rear center of the fan shaped upper and lower cutter plates 22 and 22a, and a plurality of cuts are formed in the circumference of the upper and lower cutter plates 22 and 22a. The blades 24 and 24a are formed in a gear shape, and the long holes are long in the front and rear directions so that the upper and lower cams 30 and 30a are inserted on the upper and lower cutter plates 22 and 22a in front of the hinge holes 23 and 23a. The upper and lower cam grooves 26 and 26a having a shape are formed, and the upper and lower cutter plates 22 and 22a overlap each other, and support bolts for reciprocating the left and right reciprocating movements in a state where the upper and lower cutter plates 22 and 22a maintain a constant gap ( 27a) upper and lower cutters 19 and 20 are installed; Composite weeder, characterized in that consisting of the upper cover 15 and the lower cover 18 is coupled to be spaced apart by a predetermined interval. delete The method of claim 1, The composite weeder, characterized in that the safety roller 31 is coupled to the front end of the cutting edge 24 by a pin (31a). The method of claim 1, The work rod connecting tube 6 is formed to be inclined upwardly at the rear of the housing 7 protruding from the upper center of the upper cover 15, and the driven gear 8 is disposed at the upper portion of the inner central part of the housing 7. The rotating shaft 10 is formed in the vertical direction is provided with a power transmission gear (9) at the lower end, The drive shaft 11 is provided with a drive gear 11 at one end of the rod connecting pipe 6 and a coupling part 12 inserted into the insertion coupling part 4a of the rotary shaft 4 at the other end thereof. ) Is rotatably installed by the bearing (14). The method of claim 1, A movable gear 17 having a square shaft portion 16 installed downward is engaged with the power transmission gear 9 at a lower portion of the upper side of the upper cover 15, and an upper cover 15 is disposed below the upper cover 15. Lower cover 18 is installed in a spaced apart state, The upper and lower cutters 19 and 20 formed in a fan shape between the upper and lower cover parts 15 and 18 are hinged by the hinge pins 21 provided between the upper and lower cover parts 15 and 18 with the rear center parts overlapping each other. Combined mowers, characterized in that installed with knowledge. The method of claim 1, The upper and lower cam grooves 26 and 26a are inserted into upper and lower cams 30 and 30a in which the square grooves 29 and 29a into which the square shaft portions 16 are fitted are eccentrically inserted into the upper and lower cam grooves 26 and 26a. The upper and lower cams (30, 30a) is a composite herb, characterized in that the square shaft portion (16) is installed to be inserted into the square grooves (29, 29a) overlapping to match each other in a staggered state. The method of claim 1, The upper and lower cutters 19 and 20 form hinge holes 23 and 23a into which the hinge pins 21 are inserted at the rear centers of the upper and lower cutter plates 22 and 22a formed in a fan shape, and the upper and lower cutter plates 22 and 22, respectively. In the center of the circumferential portion 22a, saw blade portions 32 and 32a having a plurality of cutting teeth 33 and 33a are formed to protrude, respectively, and upper and lower cutter plates 22 on both sides of the saw blade portions 32 and 32a, respectively. A plurality of cutting edges 24, 24a are formed in the circumferential portion of 22a) in the form of gears, and on the upper and lower cutter plates 22, 22a in front of the hinge holes 23, 23a, the length of the long hole is long. Upper and lower cam grooves 26 and 26a are formed, and support bolts 27a for reciprocating the left and right cutter plates 22 and 22a to guide the reciprocating movement to the left and right while maintaining a constant interval between the upper and lower cutter plates 22 and 22a. Combined weeder, characterized in that installed.

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