KR20230118446A - String trimmer for crops - Google Patents

Abstract

The present invention is a lawnmower for crops, and if described in more detail, it is intended to provide a lawnmower for crops capable of adjusting the height of a cutting means and having improved work stability. In the present invention, as a specific means for doing so, in constructing a mowing machine for crops, a cutting means configured to rotate by a driving means installed in a main body including a handle and wheels, and a main body configured to protect the driving means at the upper part of the cutting means The protection means includes a center guard configured in the driving means to cover the front and side surfaces of the driving means, a center reinforcing piece interposed between the center guard and the guard connection part, and a cutting means so that the guard connection part is interposed. It is characterized by including a side guard installed on the center guard outside the rotation radius of the side to reduce the possibility that foreign substances such as stones may cause damage to workers or surrounding people or facilities by bouncing by the present invention. It is an invention that can expect a number of effects such as increasing the stability in use by using a soft barrier.

Description

Grass trimmer for crops {String trimmer for crops}

The present invention relates to a lawnmower for agricultural crops, and more specifically, relates to a lawnmower for facilitating harvesting by cutting the stems of crops such as water parsley.

Conventionally, various crop mowers have been developed for harvesting crops.

As disclosed in Republic of Korea Patent Publication No. 2006, No. 0074914 (published on July 03, 2006), a power transmission device for transmitting power of a driving source, a rotating plate connected to the power transmission device and driven to rotate, and one end of the rotating plate It is characterized in that it includes a cutter that is rotatably installed and spreads by centrifugal force when the rotating plate rotates, and a cutting unit configured to be interlocked with a power transmission device by operating a manager in preparation for a crop mower for which a user generally cuts grass Therefore, a technique for continuously cutting an object to be cut at a constant height in a wide space is disclosed.

In the above technology, when a foreign object such as a stone on the ground collides with the cutter part, a problem may occur in which the foreign object bounces in all directions, which may cause damage to the power transmission device. To prevent this, Korean Patent Publication No. 2000 No. 0054478 As published in (Published on September 05, 2000), the pulley to be connected and mounted on the tooth of one end of the horizontal axis for operating the control machine of the main body of the control machine, and the bevel gear connected to the pulley and the V-belt to rotate While forming the trimmer main body with the common trimmer blade mounting part connected to the vertical axis of the horizontal axis and the vertical axis of the bevel gear, the upper end of the stepped height adjuster is bolted to the bracket mounted and fixed to the manager main body on the inner surface of the trimmer main body cover. And the lower end of the height control rod is externally connected to the vertical height control rod of the height control unit, and the height control circumscribed rod is fixed by their height control ball and height control bolt, and the lower end of the vertical height control rod of the height control unit is a blade. It is fixed to the upper front surface of the protective cover, the rotating wheel is detached from the lower part of the blade protective cover by bolts, and both lower ends of the cutter body cover are fixed by the blade protective cover and the support plate. Although a trimmer for mounting has been disclosed, the cutter had to be exposed to the outside in order to harvest crops in an intact state, since the cutter had a problem in that the object cut in a form where the blade was hidden in a circular cover was damaged.

As a technique for improving the above problems, as disclosed in Korean Patent Registration No. 1031439 (announcement dated April 19, 2011), a cutting blade is provided around the circumference and the trunk tube of the rotating plate constituting the trunk tube in the center is used for grass crops. In a conventional mowing machine for grass crops, which is inserted below the output shaft of the mower and coupled with a nut to a male screw below the output shaft, a hollow tube and a spherical plate are formed below the trunk tube, but the hollow tube has a plurality of assembling holes in the longitudinal direction. is formed and coupled to the trunk tube by a bearing, and the spherical plate is curved with a diameter close to the diameter of the rotating plate, and a support pipe having an assembly hole is provided vertically in the center of the inner side of the spherical plate, concentric with the assembly hole of the support pipe A horizontal tube is provided inside the spherical plate, but the right horizontal tube is protruded outside the spherical plate to form a pin hole, and the support tube of the spherical plate is inserted into the hollow tube, and then the assembly rod inserted into the right horizontal tube is the hollow tube and the support tube assembly And a grass cutter rotation plate for grass crops, characterized in that it is inserted into the left transverse tube, and a binding pin is inserted into the pin hole of the right transverse tube to combine the right transverse tube and the assembly rod. As disclosed in Patent Registration No. 0914138 (published on August 19, 2009), a cutter is provided on one side of the gearbox, a support on the other side, and a bevel gear meshing with the electric bevel gear on the rotating disk below the longitudinal axis. In a mowing machine for grass crops comprising a blade, an auxiliary gearbox installed on the upper part of the support and the vertical shaft, and a grass guide device, the grass guide device is configured separately from the auxiliary gear box, and the auxiliary gear box Place the outer side plate of the support pipe of the grass guide device in a stacked manner on the protruding support plate of the side plate and connect the side plate and the support plate with bolts so that they can be moved within the long hole range of the side plate, Provided with branch transverse pipes on both sides of the cross pipe of the support pipe diagonal And, the spiral axis is coupled with a pin to the protrusion of the center support so that the center support can be stretched and stretched in the transverse pipe, and the spiral axis is inserted into the through hole of the support protrusion provided in the transverse pipe and coupled with a nut to configure, and the front end support plate of the center support The chain gear support is hinged with bolts on both sides, the chain gear is hinged with bolts in the center, the chain gear is hinged with bolts at the tip of the chain gear support, and the chain gear located above the shaft of the support pipe A chain is connected between the chain gears of the chain support, grass guide protrusions are provided on the chain at regular intervals, and the chain is configured to be guided by a transverse branch tube. You will be able to.

In the present invention, one intends to provide a mowing machine for crops specialized in parsley among crops that are harvested, but the mowing target is not limited to parsley.

Water parsley is a perennial plant of the family Umbrella. The stem is about 30 cm high and has no hair. It propagates by extending the creeping stem. there is.

KR 10-2006-0074914 A (July 03, 2006) KR 10-2000-0054478 A (September 05, 2000) KR 10-1031439 B1 (April 19, 2011) KR 10-0914138 B1 (August 19, 2009)

As described in the background art of the invention, the prior art has a problem in that a nearby facility, such as a house, is damaged by being close to the cutter, or foreign matter on the ground bounces around and damages the surrounding facility or user.

In the present invention, a new technology has been invented to solve the problems of the prior art, and the object of the present invention is to improve the structure of the crop mower to enable more precise crop cutting and to provide a safe crop mower. .

In addition, although not separately described, other objects within the scope that can be inferred in view of the specific details and claims for carrying out the invention below are also included in the overall task of the present invention.

As a specific means for solving the above problems of the present invention, in the present invention, in constructing a lawnmower for crops, a cutting means configured to rotate by a driving means installed in a main body including a handle and wheels, and driven at the upper part of the cutting means A protective means configured in the body to protect the means is included, the protective means includes a center guard configured in the driving means to cover the front and side surfaces of the driving means, a center reinforcing piece interposed between the center guard and the guard connection part, It is characterized by including a side guard installed on the center guard outside the rotation radius of the cutting means so that the guard connection portion is interposed.

The side guard is characterized in that it includes a guard piece coupled to the guard connecting portion, a bending guide formed in front of the guard piece, and a soft blocking portion coupled to the guard piece and configured to be downward.

The guard piece may be formed in an arc shape inwardly.

The soft blocking part is characterized in that one side is formed downward by 4/5 of the distance between the ground and the bottom of the guard piece, and the other side is formed downward by 1/2 of the distance between the ground and the guard piece at the lower part of the guard piece.

According to the specific means for solving the above-described problems, when the blade of a rotating body with a high rotation rate comes into contact with the ground, the possibility of foreign substances such as stones bouncing and causing damage to workers, people or facilities around them is reduced. In the present invention, A protective means is further provided, and in particular, the safety of use is increased by using the soft blocking part of the side.

The problem of mud or stones splashing on the blades of the rotating body piercing the vinyl of the facility house or mud sticking to the vinyl and causing a decrease in the amount of sunlight was prevented in advance.

The protection means induces water parsley and water parsley to lie neatly on one side (right side in the present invention) by preventing water parsley from being scattered by the wind pressure and weight of the cutting means when harvesting water parsley seeds.

The protective means can prevent the cutting means from colliding with the structure of the house or the house vinyl and damaging each other in advance.

The bending guide provided in the protective means is an invention with great expected effects, such as serving as a guide or indicator so that water parsley grown in an arbitrary position can be constantly cut by being scattered on the ground.

1 is a side view of a lawnmower for crops to which an example of the present invention is applied
2 is a plan view of a lawnmower for crops to which an example of the present invention is applied
3 is a front view of a crop mower to which an example of the present invention is applied
Figure 4 is a plan view of a crop mower to which another example of the side guard of the present invention is applied
Figure 5 is a separated three-dimensional view showing an example of the side guard of the present invention

The present invention is intended to provide a lawn mower for crops, which will be described in more detail with drawings below, and the accompanying drawings are only examples for easily explaining the content and scope of the technical idea of the present invention, and are limited thereto. It is not intended, and the terms used are also intended to specifically describe the embodiment, and should not be construed as being limited to the terms.

As shown in FIGS. 1 to 3 , the above-described mower 1 for crops of the present invention has a main body 2 having control means 21 such as a handle and a controller, and a heavy mower 1 for crops. Moving means 22 such as wheels are provided so that they can be easily moved on the ground.

In addition, a cutting means 4 for cutting an object to be cut such as water parsley using rotational force is provided in the main body 2, and a driving means 3 such as a motor to rotate the cutting means 4 is mounted on the main body 2. are provided

In the crop mowing machine (1) having only the above configuration, foreign substances on the ground may cause damage to the surrounding people or surrounding facilities, including the component members of the crop mowing machine (1) or the operator, during operation. Protection means to prevent this (5) is further provided.

Looking at the above configuration in detail, it is as follows.

A control means 21 such as a handle is configured at the rear of the main body 2 of the crop mower 1 so that the user can grip and operate the handle to determine the moving direction of the crop mower 1 or to control its operation. can do.

At the rear lower part of the main body 2, moving means 22 such as wheels supporting the crop mower 1 and easily moving the crop mower 1 through a rolling motion are provided, and the wheels are separate The mower 1 for crops can be moved by the user's manpower without the driving means 3 or by further providing a separate power unit so that the wheels rotate by the power unit to move the mower 1 for crops, which is a mower for crops ( The composition can be added or subtracted in preparation for the weight and volume of 1).

The main body 2 is provided with a driving means 3 such as a motor or an engine, and a cutting means 4 linked to the driving means 3 is installed on the front lower part of the main body 2.

The cutting means 4 is configured such that a disk-shaped rotating body 41 is installed on the driving means 3 to rotate, and a plurality of blades 42 radially outward from the rotating body 41.

It is preferable that the blade 42 be installed so that it is eccentrically reduced and free-rotating rather than being fixed to the rotating body 41, and when the rotating body 41 is rotated by the driving means 3, the blade 42 is subjected to centrifugal force. By this, it is spread outward, and the water parsley is cut by the rotating blade 42.

If the blade 42 is fixed to the rotating body 41, the blade 42 may be worn or damaged when it hits a rock, ground, facility frame, etc. that is not a soft cutting object during rotation, but the blade ( 42) is installed eccentrically, the blade is inserted into the rotating body 41 and damage is prevented.

A supporting portion configured to support the rotating body 41 and to keep the rotating body 41 apart from the ground by a predetermined distance may be further provided at the bottom of the rotating body 41 .

In the protective means 5, a new configuration may be further provided.

As shown in FIGS. 1 to 5, a center guard 51 configured to protect the driving means 3 is formed in a 'V' shape or a 'U' shape that opens left and right from the front to the rear. And, the lower end of the center guard 51 is spaced apart from the rotating cutting means 4 so as not to interfere when the cutting means 4 rotates.

The material of the center guard 51 may be synthetic resin, but it is preferable to be made of metal for durability and strength.

At this time, the cutting means 4 protrudes forward more than the center guard 51, so that when the user drives the lawnmower 1 for crops and moves forward, the cutting means 4 is more likely than the center guard 51 to cut objects such as water parsley. First contact, the cutting force must be generated.

Side guards 52 are additionally formed on both sides of the center guard 51 in the forward direction of the crop mower 1, and the position of the side guards 52 is the rotation of the cutting means 4 on a plane. By placing it outside the radius, the rotating blade 42 rotates inside the protective means 5.

Therefore, when observing the combined center guard 51 and the side guard 52 from above, they are formed in an 'M' shape that is larger than the radius of rotation of the cutting means 4.

Since the side guards 52 are formed to spread apart from the center guard 51 by a predetermined angle, a space is created between the side guards 52 and the center guard 51, so that both sides can be firmly fixed to each other. 51) and the side guard 52, a substantially 'c'-shaped guard connection portion 53 is formed.

As shown in the drawing, since the center guard 51 and the side guards 52 may not be implemented in parallel with each other, the guard connection parts 53 should be installed in various sizes according to the interval.

In addition, a center reinforcing piece 511 may be further provided between the center guard 51 and the guard connection part 53.

When the center reinforcing piece 511 is formed, it is possible to prevent the center guard 51 from being deformed or damaged by the load of several guard connection parts 53 of the side guards 52 .

As shown in FIG. 6 , the side guard 52 is composed of a guard piece 521 formed long in the front and rear directions of the crop mower 1 so as to be coupled with the guard connection part 53 .

The upper and lower heights of the guard pieces 521 are short, the front and back lengths are long, and the material may be synthetic resin, but it is preferably made of metal for durability and strength.

The guard connecting portion 53 and the guard piece 521 may be coupled by various methods such as fasteners or welding.

A soft blocking portion 523 is coupled to the guard piece 521 and extends downward.

The soft blocking part 523 can be composed of various materials including transparent synthetic resin such as cellulose acetate, but durability to the extent that foreign substances bouncing against the cutting means 4 do not penetrate the soft blocking part 523 should have

The method of coupling the soft blocking portion 523 to the guard piece 521 may be variously implemented without being limited to any one method, but in the embodiment of the present invention, the embodiment shown in the drawings will be described.

Since the soft blocking part 523 is not a hard and hard material, if only a part of the soft blocking part 523 is coupled to the guard piece 521 and hangs down, it may not be uniform and wrinkles may occur, so the soft blocking part 523 In order to uniformly extend downward, a folded portion 523a is formed on the top of the soft blocking portion 523 in the longitudinal direction, and the upper end of the guide plate is inserted into the folded portion 523a so that the soft blocking portion 523 ) can be configured so that it is evenly caught in the guard piece 521 and extends downward.

The upper end of the soft blocking portion 523 may be fixed to one side of the guard piece 521 and engaged with the other side of the guard piece 521.

The extended length of the soft blocking portion 523 may form a length up to the ground.

However, when the extended length of the soft blocking portion 523 is formed to touch the ground, the soft blocking portion 523 may be rubbed on the ground when the crop mower 1 is tilted, so the length of the soft blocking portion 523 It is preferable to properly provide.

In a pair of side guards 52 formed on both sides of the center guard 51, the soft blocking part 523 extends from the bottom of the side guard 52 at the lower end of the guard piece 521 so that the lengths are symmetrical to each other. It may be formed downward to a length (L) of about 3/5 of the height (H) to the ground.

Alternatively, the length of the soft blocking portion 523 extending to the lower portion of the side guard 52 is asymmetrical, and one side is about 1/2 the length L1 compared to the height H from the lower end of the guard piece 521 to the ground It is formed downward to prevent foreign substances from bouncing to the outside, and the other side is formed downward to a length (L2) of about 4/5 to induce cutting objects such as water parsley to lie in a certain direction, and one side and the other side of the cutting means Depending on the direction of rotation of (4), they may be reversed to each other.

In addition, a bending guide 522 may be further configured in front of the guard piece 521.

The bending guide 522 may play a role of guiding the direction so that water parsley scattered on the ground and grown in an arbitrary position can be constantly cut when determining the driving direction during operation of the crop mowing machine 1.

In addition, the planar shape of the guard piece 521 may be formed to form a straight line from front to back as shown in FIGS. 1 to 3, or may be formed in an arc shape as shown in FIG. 4.

As described above, the most preferred embodiment of the present invention has been described in the detailed description of the present invention, but various modifications may be made within a range that does not depart from the technical scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the above embodiments, but the scope of protection should be recognized from the techniques of the claims to be described later and from these techniques to equivalent technical means.

1: Lawn mower for crops
2: The body
21: control means
22: means of transportation
3: driving means
4: cutting means
41: rotating body
42: blade
44: detachable support
5: protective measures
51: Center guard
511: center reinforcement
52: side guard
521: guard
522: bending guide
523: soft blocking unit
523a: folded portion
53: guard connection

Claims (3)

Cutting means (4) configured to be rotated by the drive means (3) installed in the main body (2);
A protective means (5) configured in front of the main body (2) at the top of the cutting means (4);
is included,
The protection means 5,
a center guard 51 configured in the driving means 3 to cover the front and side surfaces of the driving means 3;
Side guards 52 installed on both sides of the center guard 51 outside the rotation radius of the cutting means 4;
Grass cutter for crops, characterized in that it contains.
according to claim 1;
The side guard 52 is
A guard piece 521 connected to the center guard 51 and installed outside the rotation radius of the cutting means 4;
A bending guide 522 formed in front of the guard piece 521;
A soft blocking portion 523 coupled to the guard piece 521 and configured to be downward;
Grass cutter for crops, characterized in that it contains.
according to claim 2;
The soft blocking part 523 on one side is formed downward to 1/2 length (L1) in comparison to the height (H) from the lower end of the guard piece 521 to the ground, and the soft blocking part 523 on the other side is 4/ A lawn mower for crops characterized in that it is formed in a length of 5 (L2) to prevent foreign substances from splashing out.

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