KR200383657Y1 - Rolling cutter - Google Patents

Abstract

The present invention relates to a rolling cutter, which is an improved design of a straight cutter for mowing machines, and more specifically, to separate the main blade and the auxiliary blade into two-, three-, and four-blade-shaped cutters, each of which is made of a body, and subdivided. The auxiliary blade of the cutter is fluidly coupled to the main blade so that when the auxiliary blade collides with foreign objects such as protrusions during the mowing operation, the blade retreats backward in the rotational direction to prevent the blade from being damaged and to prolong the service life and ensure the safety of the operator. It is to provide a rolling cutter for a functional mower.

Description

        Rolling cutter

The present invention relates to a rolling cutter that improves and improves the shortcomings of the cutter-type body cutter, and the cutter for the mower is a number of straight, rolling, and the like. It is used as a tool device for cutting weeds and unbridled trees on roadsides, and when weeding in places where weeds and scrubs have grown a lot, it is not easy to find stones stuck in the ground or other hard foreign objects. When working, when the cutter blade, which was rotating at a high speed against the foreign object, hits the front face, the cutter blade was broken or twisted, or the end of the risk of injury due to scattering fragments occurred very frequently. This phenomenon occurs because the cutter blade, which has a body shape, is configured to be rigidly fixed to the drive shaft that is rotated by the power of the mower power unit, and the blade rotation angle and the collision angle of the blade face the front during the mowing operation. However, the cutter blade part is twisted or bent even if it is slightly displaced, which causes difficulty in mowing due to the shaking phenomenon during rotation.

In order to improve the above-mentioned disadvantages, the rolling cutter of the present invention is divided into two body blades, three blade blades, or four blade blades or the main body of the cutter body of the main body blades; parts and auxiliary blades; After subdividing, the auxiliary blade coupled to the main blade is completed by the fluid coupling so as to rotate the coupling member forward and rearward to the shaft, the completed rolling cutter is coupled to the power transmission drive shaft of the mower, attached to the drive shaft When the cutter body blade is rotated, the auxiliary blade portion is unfolded by centrifugal force, and the cutting work is designed to proceed while maintaining parallelism, and it is configured to satisfy the stability of the work and the durability of the product.

In the configuration of the rolling cutter for the present invention, a cutter having a straight double blade, three blades, and four blades, which is formed in a body shape, is divided into a main blade; 30 and an auxiliary blade; and a 20 and 20-1 portion. After cutting, the separated parts are configured by combining with a coupling member. In the center of the separated main blade portion 30 is formed a peripheral portion 10 is connected to the mowing drive shaft, the peripheral portion 10 is configured to become narrower toward the upper and lower surfaces from the starting point, and the secondary blade coupler 50 at the central side end thereof. Each of the main body 30 is formed by cutting edge parts A and a on one or both sides of the left and right end faces, and the auxiliary blade parts 20 and 20-1 are proportional to the body blade parts described above. Composed by cutting in size and proportion, but the coupling sphere is coupled to the main blade at the upper central side; (50-1) Opening, cutting the upper side cutting surface oval or polygonal shape around the coupling sphere (50-1) The rotational friction is reduced, and the auxiliary blades 20.20-1 are formed by cutting edges A and a on one or both sides of the left and right side cross-sections of the plate. Assembling the auxiliary member (20.20-1) to combine the coupling member (not shown) in the drawing; 50, 50-1 to the riveting, or Results bolt, and tightening the nut and the rolling cutter completed, the body blade 30, a secondary blade (20,20-1) is before the coupling member is coupled to the shaft, it will be finished in a rolling structure toward the rear side.

Detailed description of the structure will be described in detail with reference to the embodiment with reference to the drawings. 1 is a complete view of the body-shaped date two blades according to the present invention, the main blade portion 30 shown in 2 degrees is configured by cutting a metal plate of a certain size, the area toward the left, right end from the peripheral portion 10 starting point This narrow configuration, the end is cut into an elliptical shape (Fig. 4, 30) or polygonal, the periphery (10) is coupled to the power transmission shaft of the mowing machine in the center thereof, the upper and lower center end of the metal plate After opening each coupling tool 50 coupled to the auxiliary blades 20 and 20-1, the main blade 30 is formed by providing cutting edges A and a on both side surfaces or one surface of the metal plate.

3 shows the auxiliary blade portion 20.20-1, which is formed by cutting a metal plate in a size and proportion proportional to that of the main blade portion 30 described above, and the upper left and right sides coupled to the main body portion 30. To make a slightly smooth angle or cut into an oval shape, the auxiliary blades 20 and 20-1 assembled to the main blade portion 30, such as 1 degree or 4 degrees, are configured such that rotational friction is minimized when the left and right rotations are operated. After opening the coupling sphere 50-1 coupled to the main blade portion 30 toward the upper center, the auxiliary blade portion is formed by providing cutting edge portions A and a on one side or both sides of the side of the metal plate. In addition, the cutting force is improved by bending the cutting edge portion (Aa) as a method to form the blade portion with a wave shape. The main blade 30 and the auxiliary blades 20, 20-1 manufactured in the above-described structure are coupled to the coupling tool 50. ), The riveting or fastening bolts are put together and assembled to complete the rolling cutter (Fig. 1) of the first embodiment. Next, Fig. 4 shows another second embodiment. And the auxiliary blade portion 20.20-1 are the same as in the first embodiment, but differ in assembling method and operation, and grooves such as the coupling tool 50.50-1 opened on the main blade and the auxiliary blade on a rectangular metal plate composed of a specific size. The chain-shaped coupling plate 100 is formed by opening two at intervals of 3 ~ 4cm, the top and bottom of the coupling member (50.50-1) of the main blade 30 and the auxiliary blade (20.20-1), respectively, and then folded up Inserting the member is completed by riveting, or by combining with bolts, nuts. FIG. 5 is a third embodiment of the present invention. After dividing and subdividing the integrated body part of the body-shaped three blade cutter or the four blade cutter such as FIG. 5 into the main blade 30 and the auxiliary blade 20.20-1, as shown in FIG. It is shown to be made of a configuration of a rolling three blade, or rolling four blade cutter by combining the parts, members. On the other hand, although not shown in the drawing, when the coupling holes 50 and 50-1 of the main blade 30 and the auxiliary blades 20 and 20-1 are fastened with riveting or bolts or nuts, It is possible to extend the product life by applying reinforcement material or friction member to prevent wear and deformation of each part.In addition, the above-mentioned auxiliary blade part 20.20-1 of the rolling cutter can be assembled into a slip-type by multiple multiple pieces. However, the manufacturing process is complicated and the cost is expensive. However, as described above in the embodiments of the present invention, various modifications for optimal implementation are intended to belong to those skilled in the art, and belong to the scope of the present invention. The operating state of the rolling cutter completed by the above configuration. Looking at, when the cutter (figure 1) is fixed to the power transmission drive shaft of the mowing machine not shown in the drawing, when the mowing engine is operated, the drive shaft is rotated at high speed while the cutter body blade 30 by the rotating centrifugal force Auxiliary blades 20 and 20-1 are unfolded to maintain parallelism and mowing operation is performed. At this time, when the cutter auxiliary blades 20 and 20-1 that are rotating hit a foreign object, a hard object such as a stone or a tree, the auxiliary blade part (20,20-1) retracts the engaging member of the coupler (50,50-1) back to the shaft and does not face the collision, so the damage and wear of the auxiliary blade (20,20-1) due to the collision The safety of the worker Which it will provide the functioning of the rolling cutter.

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 The rolling cutter of the present invention has a small impact transmitted to the operator because the auxiliary blade retreats without facing the collision efficiently, even when external impact is unexpectedly applied to the cutter during mowing operation, thereby preventing damage to the mowing machine. It provides the effect of prolonging the service life of the cutter blade and ensuring operator safety.

1 is a complete structural diagram.

2 is a main blade structure diagram.

Figure 3 Structural drawing of the auxiliary blade 4 One embodiment complete view using a chain-bonded plate material.

[Description of Drawings]

A, a Cutter blade cutting edge, 10 periphery, 20,20-1 auxiliary blade, 30 body blade, 50 body blade coupling, 50-1 auxiliary blade coupling. 100 chain-bonded plates.

Claims (5)

In the known rolling cutter, the body portion of the integrated cutter made of resin or a metal plate is separated into a main blade portion 30 and an auxiliary blade portion 20.20-1, The main blade portion; 30 and the auxiliary blade portion; (20.20-1) divided into, the center of the main blade portion 30, the peripheral portion 10 is coupled to the drive shaft of the mowing machine is opened. Auxiliary blade coupling holes 50 are respectively opened at the upper and lower end central side ends of the peripheral portion 10, Body blade portion 30 is provided with cutting blade portions (A, a) on one side or both sides of left and right end surfaces; (30), Auxiliary blade portion (20.20-1) is made of a proportion and size proportional to the main blade portion 30, the coupling sphere (50-1) coupled to the main blade portion 30 at the central side end of the upper blade portion, An auxiliary blade portion 20.20-1 comprising cutting edge portions A and a on one or both sides of the left and right side cross-sections. Rolling cutter for mowing machine, characterized in that the auxiliary blade portion (20.20-1) of the cutter completed by coupling with the coupling member is rotated forward and backward with respect to the coupling member axis.  The rolling cutter for a mowing machine according to claim 1, wherein the main blade (30) is formed of a metal or PP resin plate of a certain thickness and size, and the cut portion is formed of an oval shape (Fig. 4). Rolling cutter for a mowing machine according to claim 1, characterized in that the auxiliary blade made of resin or a metal plate; the cutting portion of the portion (20.20-1) has an elliptical shape, and the cutting edge portions (A, a) are provided in a curved waveform. The rolling cutter of claim 1, wherein a friction member is further provided between the outer side of the coupling member and the inner side of the coupling member (50.50-1) for coupling the body blade and the auxiliary blade. Rolling cutter for mowing machine according to claim 1, characterized in that the coupling plate 100 is configured as an assembly member.