KR200448055Y1 - Apparatus for lawn care equiped with vibrating cutter - Google Patents

Abstract

The present invention relates to a lawn care device equipped with a vibrating cutter configured to cut the root of the grass in the vertical direction.

In one embodiment of the present invention, there is provided a vibration motor, which is connected to a traction device and can be towed; And a cutter frame disposed to be spaced apart from the vehicle body and mounted at a lower portion of the cutter frame to cut the root of the grass in a vertical direction, between the vibration motor mounted on the vehicle body and the cutter frame to rotate the vibration motor. A cam device configured to convert a vertical reciprocating motion and a cutter mounted between the vehicle body and the cutter frame and configured to provide an elastic restoring force during the vertical reciprocating motion of the cutter frame.

Grass, roots, cutting, cutter, blade, rotation, vibration

Description

Apparatus for lawn care equiped with vibrating cutter}

The present invention relates to a lawn care device, and more particularly to a lawn care device provided with a vibration cutter configured to cut the root of the grass in the vertical direction.

The grass is referred to collectively as ground cover plants, which are buried in the ground with roots as well as creeping and underground diameters. These grass roots are fibrous and have many roots, and their distribution and quantity depend on environmental, cultivated, and genetic factors.

The function of the roots of the grass is to fix the grass to the ground and absorb nutrients and moisture. The roots of these grasses are preferably distributed within 45-60 cm underground, but most of them are distributed within 30 cm above the ground surface. This is because the roots of grass not only grow down, but also grow vigorously to the side. Therefore, cutting the roots of the grass growing in the horizontal direction is further promoted in the vertical direction, for this purpose a butt cut device is used. The vertical cut device is provided with a plurality of blades arranged vertically, while cutting the roots of the grass by cutting the lawn to a predetermined depth while the blades rotate.

The blade of the vertical cut device cuts the roots of the grass in the vertical direction together with the ground surface while rotating while being inserted at a predetermined depth underground. Since the blade of such a butt cut device is subjected to very high friction and resistance, cutting performance is deteriorated when used for a long time or in a place where soil is solid.

In one embodiment of the present invention, there is provided a vibration motor, which is connected to a traction device and can be towed; And a cutter frame disposed to be spaced apart from the vehicle body and mounted at a lower portion of the cutter frame to cut the root of the grass in a vertical direction, between the vibration motor mounted on the vehicle body and the cutter frame to rotate the vibration motor. A cam device configured to convert a vertical reciprocating motion and a cutter mounted between the vehicle body and the cutter frame and configured to provide an elastic restoring force during the vertical reciprocating motion of the cutter frame.

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In the lawn manager with a vibration cutter according to the present invention, the cam device, an eccentric cam rotated by the vibration motor; And a belt installed between at least one of the vibration motor and the eccentric cam and between the eccentric cam and the cutter frame to transmit power.

In the lawn care device provided with a vibrating cutter according to the present invention, the cutter extends from one of the vehicle body and the cutter frame and is disposed to penetrate the other, and further includes a guide bar for reciprocating the cutter frame. It can also be done by.

Lawn manager with a vibration cutter according to the invention, the wheel for supporting the vehicle body to the ground; And a height adjuster provided between the vehicle body and the wheels to elevate the vehicle body relative to the wheels so as to adjust the depth of entry to the indicator of the blade.

In the lawn care device according to the present invention, the blade of the cutter cutting the roots of the grass may not only rotate but also vibrate up and down. Therefore, the lawn care device according to the present invention can effectively cut the roots of the grass, and there is an effect of exerting excellent work performance even in a place where the soil is used for a long time.

Lawn management device according to the present invention can easily adjust the depth of the blade is introduced into the surface by adjusting the height of the wheel, there is an effect that can be cut by inserting the blade to the optimal depth of inlet suitable for the surface conditions.

Hereinafter, embodiments of the present invention, in which the above object can be specifically realized, are described with reference to the accompanying drawings. In describing the embodiments, the same names and symbols are used for the same components, and additional description thereof will be omitted below.

1 is a perspective view showing the front of the lawn manager according to the present invention, Figure 2 is a perspective view showing the back of the lawn manager according to the present invention. 3 and 4 are schematic views showing structures for vibrating the cutter in the lawn manager according to the present invention, and FIG. 5 is an operation state diagram of the lawn manager according to the present invention.

As shown in Fig. 1 and 2, the lawn care device according to the present invention is mounted to the vehicle body 110, which can be connected to a traction device (not shown), the body 110 is sprayed water or control liquid to the ground and grass Including the injection device 200, the wheel 120 for supporting the vehicle body 110 to the ground, the cutter 300 is mounted to the vehicle body 110 to cut the root of the grass.

The vehicle body 110 forms a body of a lawn care device according to the present invention, and may be connected to a traction device (not shown) such as a tiller or a tractor. The front of the vehicle body 110 is formed with a towing ring 111 for connection with the towing device, as shown in FIG. When the towing ring 111 is connected to the towing device, the vehicle body 110 is towed while traveling of the towing device.

The injection device 200 is a device for injecting water or control liquid to the grass, as shown in Fig. 1 and 2, the tank 210 for storing the water or the control liquid and the water stored in the tank 210 or It comprises a spray nozzle 220 for spraying the control liquid to the grass.

The tank 210 is mounted on an upper portion of the vehicle body 110, for example, and a transparent level check window 211 is provided at one side thereof to check the water level in the tank 210. The injection nozzle 220 is provided with a plurality in the front lower portion of the vehicle body 110 to evenly spray the water or the control liquid stored in the tank 210 toward the grass of the ground.

A pump 230 is provided between the tank 210 and the spray nozzle 220 so that the spray nozzle 220 may evenly spray water or a control liquid at a high pressure. do. The pump 230 receives water or the control liquid in the tank 210 through the supply hose 235, and the water or the control liquid pumped at a high pressure by the pump 230 is supplied through the distribution hose 237. It is supplied to each injection nozzle 220. Each spray nozzle 220 sprays the water or the control liquid evenly toward the grass. When the pump 230 is not operated, water or the control liquid stored in the tank 210 is not sprayed.

The wheels 120 are mounted on one side of the vehicle body 110, for example, on both sides of the vehicle body 110 as shown in FIGS. 1 and 2. The wheel 120 supports the vehicle body 110 with respect to the ground, and allows the vehicle body 110 to travel smoothly when the towing apparatus is driven. In the embodiment shown in the drawing the wheel 120 is provided in the rear lower portion of the vehicle body 110, in this case, it is difficult for the vehicle body 110 to be self-supporting in the state in which the vehicle body 110 is separated from the towing device . Therefore, the support body 125 may be provided in the vehicle body 110 so that the vehicle body 110 separated from the towing apparatus can stand on its own.

The support leg 125 is disposed at the front lower portion of the vehicle body 110 as shown in FIGS. 1 and 2 to support the vehicle body 110 with the wheel 120 against the ground. In the state in which the vehicle body 110 is connected to the towing device, the vehicle body 110 may stand on its own even without the support leg 125. Accordingly, when the vehicle body 110 is connected to the towing device, the support leg 125 is folded or rotated as shown in FIG. 5 so that the support leg 125 does not interfere with the running of the vehicle body 110. Away from the ground.

The wheels 120 are mounted to be capable of height adjustment on one side of the vehicle body 110 through the height adjustment port 130 as shown in Figs. When the wheel 120 is lowered by the height adjustment device 130, the vehicle body 110 is relatively raised relative to the ground. On the contrary, when the wheel 120 is raised by the height adjusting device 130, the vehicle body 110 is relatively lowered to the ground. When the vehicle body 110 rises above the predetermined height, the blade 320 of the cutter 300 falls from the ground. When the vehicle body 110 descends above the predetermined height, the blade 320 of the cutter 300 moves to the ground. Is inserted.

As shown in FIGS. 1, 2, and 5, the height adjustment device 130 is provided on the wheel support 131 on which the wheel 120 is fixed, the vehicle body 110, and the wheel support 131. Comprising a screw 135, and an adjustment handle 137 formed on the top of the screw 135, respectively.

The wheel support 131 is to be fixed to the wheel 120 is disposed on both sides of the vehicle body 110, respectively. The wheel support 131 may be elevated with respect to the vehicle body 110 together with the wheel 120. A vertical guide slot 112 is formed at the side of the vehicle body 110 so that the wheel support 131 can stably move with respect to the vehicle body 110, and the wheels are formed in the guide slot 112. A portion of the support 131 is fitted.

The adjustment handle 137 is formed on the top of the screw 135, the user can rotate the screw 135 in the forward or reverse direction by using the adjustment handle 137. The screw 135 is coupled to the vehicle body 110 and the wheel support 131, respectively, and changes the relative distance between the vehicle body 110 and the wheel 120 during rotation. For example, when the screw 135 rotates in the forward direction, the wheel 120 is lowered relative to the vehicle body 110 while raising the vehicle body 110 relative to the ground, and the screw 135 rotates in the reverse direction. The lower wheel 120 lowers the vehicle body 110 with respect to the ground while the wheel 120 ascends with respect to the vehicle body 110. As such, through the forward and reverse rotation of the screw 135, the vehicle body 110 rises or descends with respect to the ground, and together, the blade 320 of the cutter 300 falls from the ground or is inserted into the ground.

The cutter 300 is mounted to the vehicle body 110, and a plurality of blades 320 are spaced apart from each other as shown in FIG. 2. The blade 320 of the cutter 300 may be removed from the ground or inserted into the ground by adjusting the height of the wheel 120 as described above. Therefore, when only water supply or control operations are performed, the vehicle body 110 may be raised to drop the blade 320 of the cutter 300 from the ground, and the vehicle body 110 may be removed when the butt cut operation of cutting the root of the grass is performed. By lowering, the blade 320 of the cutter 300 may be inserted into the ground. On the other hand, during the butt cut operation, it is preferable to adjust the height of the vehicle body 110 by using the height adjustment holes 130 so that the blade 320 is introduced into the surface at the optimum depth of inlet that matches the surface conditions. Do.

As shown in FIGS. 2 and 5, the blade 320 is mounted to the cutter frame 310. The cutter frame 310 includes a plurality of extension parts 315 extending downward, the blade support shaft (not shown) is mounted at the lower end of each extension portion 315, and on both sides of the blade support shaft A pair of blades 320 are each mounted.

The blade 320 of the cutter 300 may be configured to rotate during the butte cut operation to effectively cut the root of the grass. To this end, the blade 320 of the cutter 300 is configured to rotate by receiving the power of the traction device or configured to rotate by a motor provided separately.

In the former case, a power shaft for transmitting power to the additional device is generally drawn out to the tiller or tractor, and a driving shaft (not shown) connected to the power shaft protrudes toward the front of the vehicle body 110, A bevel gear box is connected to the rear end of the drive shaft, and a power transmission shaft (not shown) is connected to the bevel gear box. The power transmission shaft is directly connected to the blade support shaft on which the blade 320 is mounted or connected by a belt or the like. By such a structure, the power of the traction device is transmitted to the blade support shaft so that the blade 320 can rotate. Such a structure is widely used in general agricultural machinery that are connected to a traction device such as a cultivator or a tractor and receive power, and thus detailed description thereof will be omitted.

In the latter case, the blade 320 is configured to rotate by a drive motor (not shown) separately provided in the vehicle body 110. The drive frame is mounted to the cutter frame 310, and a motor shaft (not shown) is connected to the drive motor. The motor shaft is disposed to pass through each extension 315 of the cutter frame 310. The motor shaft is disposed in parallel with the blade support shaft (not shown) disposed at the lower end of the extension portion 315, and the motor shaft and the blade support shaft are connected by a power transmission member such as a belt.

When the motor shaft rotates by the operation of the drive motor, the rotation of the motor shaft is transmitted to the blade support shaft through the power transmission member. Thus, the blade 320 mounted on the blade support shaft is rotated to effectively cut the root of the grass.

On the other hand, in the lawn care device according to the present invention, the cutter 300 is mounted on the vehicle body 110 to be vibrated up and down so that the blade 320 can more effectively cut the root of the grass. As such, a structure for vibrating the cutter 300 up and down is illustrated in FIGS. 3 and 4, which will be described below in more detail with reference to these drawings.

3 and 4, the cutter 300 is a cutter frame 310, spaced apart from the vehicle body 110, the rotary motion of the vibration motor 330 up and down reciprocating motion of the cutter frame 310 Cam apparatus for converting to, and the elastic member 350 for imparting an elastic restoring force to the relative movement of the vehicle body 110 and the cutter frame (310). In addition, the cutter 300 may further include a guide bar 360 for smoothly guiding the up and down reciprocating motion of the cutter frame 310.

3 and 4, the cutter frame 310 is disposed so that an upper portion thereof is spaced apart from the vehicle body 110. The blade 320 is mounted to the lower portion of the cutter frame 310 as described above. An elastic member 350 in the form of a coil spring is interposed between the vehicle body 110 and the cutter frame 310, and the guide bar 360 is mounted to penetrate the inside of the elastic member 350. For example, the guide bar 360 extends downward from the vehicle body 110 and is disposed to penetrate the cutter frame 310, and the vertically reciprocating motion of the cutter frame 310 is applied to the guide bar 360. Guided gently.

3 and 4, the vibration motor 330 is mounted on the vehicle body 110, and a rotation shaft 331 is connected to the vibration motor 330. A reducer 332 may be installed between the vibration motor 330 and the rotation shaft 331 if necessary. The rotation of the rotation shaft 331 by the operation of the vibration motor 330 is converted into the vertical reciprocating motion of the cutter frame 310 by the cam device. 3 and 4, the cam device includes an eccentric cam 340, between the eccentric cam 340 and the vibration motor 330, and between the eccentric cam 340 and the cutter frame 310. At least one of which is provided to include a belt (335, 337) for transmitting power.

In the embodiment of FIG. 4, the eccentric cam 340 is mounted to the rotation shaft 331, but in the embodiment of FIG. 3, the eccentric cam 340 is connected to the rotation shaft 331 by a belt 335. It is mounted on a separate shaft 337. The center of the eccentric cam 340 is spaced apart from the center of the rotation axis 331 or the shaft 337 by a predetermined distance. And, in the embodiment of Figure 3, the outer surface of the eccentric cam 340 is installed to contact the upper portion of the cutter frame 310, in the embodiment of Figure 4, the outer surface of the eccentric cam 340 is a belt ( 335 is connected and the belt 335 is connected to a separate shaft 317 mounted to the cutter frame 310.

When the vibration motor 330 operates, the rotation shaft 331 rotates, and thus the eccentric cam 340 rotates. Since the center of the eccentric cam 340 is spaced apart from the center of the rotation shaft 331 and the shaft 337, the vibration motor (B) by the rotation of the eccentric cam 340 and the belts 335 and 337 The rotational movement of the 330 is converted into a vertical reciprocating movement of the cutter frame 310. Therefore, the cutter frame 310 reciprocates up and down, and the elastic member 350 assists in the up and down reciprocation of the cutter frame 310 with elastic restoring force.

When the cutter frame 310 reciprocates up and down, the blade 320 mounted below the cutter frame 310 also reciprocates up and down. The blade 320 rotates as described above, and also moves up and down as shown in FIGS. 3 and 4. Therefore, the blade 320 can effectively cut the root of the grass in the vertical direction.

On the other hand, the lawn care machine according to the present invention may be further provided with a pressure roller 400 as shown in Figs. The pressure roller 400 extends from the cutter 300 and presses the ground from the back of the blade 320 while being pressed by the pressure spring 410. The pressure roller 400 serves to step on the grass cut roots after the blade 320 cut the grass, and in addition to the appropriate weight is added to the rear of the grass manager by the center of gravity is directed to the front portion It helps to keep the work stable by preventing the damage.

Lawn manager according to the present invention configured as described above is configured to be able to lift the vehicle body 110, as shown in Figure 5 may also perform a butt cut operation and water supply or control work at the same time, to perform these operations independently It may be. In the case of independently performing the water supply or the control operation, the vehicle body 110 is sufficiently raised by the height adjusting device 130 so that the blade 320 does not contact the ground, and the pump 230 operates Water or the control liquid is sprayed on the grass through the spray nozzle 220. When only the butt cut operation is performed independently, the pump 230 may be stopped in the state of FIG. 5.

As described above, the lawn care device according to the present invention provides excellent grass cutting performance because the blade of the cutter not only rotates but also reciprocates up and down by the cam device. In addition, the grass manager according to the present invention, it is possible to easily adjust the insertion depth of the blade to the surface, it is possible to perform the optimal cutting work according to the surface conditions.

Although some embodiments have been described above by way of example, it will be apparent to those skilled in the art that the present invention may be embodied in many other forms without departing from its spirit and scope.

Accordingly, the above-described embodiments should be considered as illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are included within the scope of the present invention.

1 is a perspective view showing a front of a lawn care device according to the present invention;

Figure 2 is a perspective view showing the back of the lawn care machine according to the present invention;

3 and 4 are schematic views showing the structures for vibrating the cutter in the lawn manager according to the present invention; And

5 is an operational state diagram of a lawn care device according to the present invention.

     Explanation of symbols on the main parts of the drawings

110: body 120: wheels

130: height regulator 200: injector

210: tank 220: injection nozzle

230: pump 300: cutter

310: cutter frame 315: extension portion

320: blade 330: vibration motor

340: eccentric cam 400: pressure roller

Claims (5)

A vehicle body having a vibrating motor and connected to the traction device and towed; And The cutter frame is disposed spaced apart from the vehicle body and is mounted between a cutter frame having a blade cutting grass roots in a vertical direction, and a vibration motor mounted on the vehicle body and the cutter frame to rotate the vibration motor up and down. A cutter comprising a cam device for converting the reciprocating motion and an elastic member mounted between the vehicle body and the cutter frame to impart an elastic restoring force during the vertical reciprocating motion of the cutter frame; Lawn manager with a vibration cutter, characterized in that comprises a. delete The method of claim 1, The cam device, An eccentric cam rotated by the vibration motor; And And a vibration cutter provided between at least one of the vibration motor and the eccentric cam and between the eccentric cam and the cutter frame to transmit power. The method of claim 1, The cutter, And a guide bar extending from one of the vehicle body and the cutter frame to penetrate the other, and further comprising a guide bar for reciprocating the cutter frame. The method of claim 1, Wheels for supporting the vehicle body against the ground; And And a height adjuster provided between the vehicle body and the wheels, the height adjusting device configured to elevate the vehicle body with respect to the wheels to adjust the depth of entry to the indicator of the blade.

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