JPH069421U - Mowing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent damage to the machine and improve the efficiency of mowing work in mowing work performed by attaching a mowing device to the arm tip of a backhoe or the like. [Structure] The mowing device (A) has an attaching means (2) attached to the arm of the backhoe. The mower body (1) is rotatably attached to the attachment means (2). Mower body (1)
Has a hood (10), and the hood (10) is provided with a rotary blade (3). Behind the rotary blade (3), a grass raising tool (5) is provided in proximity to the rotation track of the blade edge. In addition, a guard roller (6) is provided at the bottom of the mower body (1) to protect the cutting edge of the rotary blade (3) from hitting the ground.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a mowing device, and more particularly to a mowing device capable of improving mowing efficiency and mowing fallen grass.

[0002]

[Prior art]

 For example, mowing on the slope of a dike is generally performed by a backpack type power mower. This is because the slope of the slope is relatively steep, and self-propelled mowers with good work efficiency cannot be used due to the risk of tipping. Therefore, the present inventor has proposed a "mowing device" in Japanese Utility Model Laid-Open No. 63-89737 as a means for efficiently mowing the slope of a dike. This "mowing device" has a structure that is used by being attached to the arm tip of a hydraulic excavator excavator such as a backhoe, and it uses a drive unit that is separate from the excavator to rotate the rotary blade to mow the grass.

[0003]

[Problems to be solved by the device]

 However, it has been found that the above-mentioned mowing device has the following problems. (A) The rotary blade of the mowing device has a structure that rotates in one direction perpendicular to the ground including the slope to cut grass, and can be used only in one direction. Therefore, for example, when the grass is cut back and forth on the embankment by reciprocating the backhoe, the grass cutting device is returned on the returning path without performing the cutting operation on the returning path. Then, the mowing device is located on the slope where the grass is growing, and the grass is cut again on the outward path. In this way, the efficiency of the work is poor because it is not possible to mow on the return trip. (B) There is no problem if the grass growing on the ground is standing normally, but if the grass is falling down due to a strong wind such as a typhoon, the rotary blade will not come into contact with the grass and will remain uncut. . (C) The operation of operating the backhoe or the like to move the mowing device while keeping the distance between the rotary blade of the mowing device and the ground substantially constant requires considerable skill even if the ground is flat. Furthermore, if the ground is undulating, the blade tip of the rotary blade may get caught in the soil on the ground, and the rotary blade and drive system may be damaged.

[0004]

[Constitution of device]

 The configuration of the present invention taken to solve the above problems is as follows. According to a first aspect of the present invention, there is provided a mowing device which is used by being attached to an arm tip of a hydraulic excavator excavator, wherein the mowing device is attached to the arm and rotatably provided to the attaching means. A main body of the mower, and a rotating means for rotating the main body of the mower, wherein the main body of the mower includes a base body, a rotary blade arranged on the base body, and a drive system of the excavator. It is a mower that has an independent prime mover.

According to a second aspect of the present invention, there is provided a mowing device which is used by being attached to an arm tip of a hydraulic excavator excavator, wherein the mowing device includes an attaching means to be attached to the arm and a rotating means to the attaching means. A lawn mower body which is provided so as to be able to rotate, and a rotating means for rotating the lawn mower body. The lawn mower body includes a base body, a rotary blade disposed on the base body, and a rear portion of the rotary blade. In addition, the grass cutting device is provided with a grass raising tool provided close to the rotation track of the cutting edge. A third invention is the grass mowing device according to the first or second invention, wherein a lower part of the mowing machine main body is provided with a guard body for protecting the blade edge of the rotary blade from hitting the ground. .

As the rotating means, for example, a hydraulic motor, an electric motor, a hydraulic cylinder, an air cylinder or the like is used. The drive structure can employ well-known means and is not particularly limited. The shape of the grass raising tool is, for example, a tubular body having a triangular cross section or an inclined plate, but the structure thereof is not particularly limited as long as it has a function of raising a fallen grass. The structure of the guard body is not particularly limited as long as it can protect the blade edge of the rotary blade from hitting the ground, such as a wheel shape using rubber tires or a metal roller shape. . Further, in order to prevent the grass raising tool and the guard body from being easily damaged, it is also possible to adopt a cushioning structure that can be moved up and down via a biasing body such as a spring.

[0007]

【Example】

 The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing an embodiment of the mowing device, FIG. 2 is a schematic side view, and FIG. 3 is a main part explanatory view showing a structure of a rotating body. Reference numeral A is a mowing device, which is a mounting means 2 for mounting to an arm of a hydraulic excavator excavator, a mowing machine body 1 rotatably mounted on the mounting means 2, and a rotating means for rotating the mowing machine body 1. The hydraulic motor M is The mower body 1 includes a hood 10 as a base. The hood 10 covers a rotary blade 3 described later and serves as a frame of the mowing device A, and has side walls 101 on both sides. At the upper part of the hood 10, there is provided an attaching means 2 for attaching to the tip of an arm 71 (shown in FIGS. 4 and 5) of the backhoe 7 which is a hydraulic excavator excavator as described above. The mounting means 2 includes a substrate 20. On the upper surface of the substrate 20, two attachment plates 21 facing each other are erected. Each attachment plate 21 is provided with two attachment holes 22. A rotating body 23 is rotatably attached to the lower portion of the substrate 20.

The structure of the rotating body 23 will be described with reference to FIG. An inner ring 24 is provided on the lower surface of the substrate 20. An outer ring 25 is provided on the upper surface of the rotating body 23. Grooves 240 and 250 are provided on the outer peripheral surface of the inner ring 24 and the inner peripheral surface of the outer ring 25, and a plurality of steel balls 26 are interposed between the grooves. A gear 27 is provided on the entire outer peripheral surface of the outer ring 25. A hydraulic motor M is provided on the base 20. A gear 28 is attached to the drive shaft of the hydraulic motor M, and the gear 28 meshes with the gear 27. As a result, the rotating body 23 is rotated by operating the hydraulic motor M.

A rotary shaft 30 is installed between the side walls 101 inside the hood 10. A rotary blade 3 is attached to the rotary shaft 30. The rotary blade 3 is composed of a plurality of rotary blade units 3 a arranged on the rotary shaft 30 in parallel over the entire length. Each rotary blade unit 3a has three brackets 31. The brackets 31 are provided at equal intervals at an angle of 120 degrees and radially with respect to the rotary shaft 30, and a cutting blade 32 is swingably attached by a pin 33 to the tip end portion thereof. The tip of the cutting blade 32 is formed in a "Y" shape, and the grass can be finely cut at the time of cutting, which has an advantage of saving labor for collecting the cut grass.

A pulley 41 (shown in FIG. 2) is attached to one end of the rotating shaft 30. A drive shaft 42 is rotatably supported by a bearing 43 on the upper portion of the hood 10. The drive shaft 42 is provided in the vicinity of the rotary mounting means 2, and the pulleys 44 and 45 are mounted on both ends thereof. A belt 46 is wound around the pulley 44 and the pulley 41. In addition to the belt, another transmission mechanism such as a chain or a gear can be adopted. Reference numeral 49 is a belt case. A prime mover E is mounted on the upper part of the hood 10 close to the rotary mounting means 2 side. A belt 47 is wound around the pulley 44 and a pulley (not shown) on the drive shaft side of the prime mover E. Reference numeral 48 is a clutch lever that operates a tension pulley (not shown), and B is a battery.

The cutting blade 32 of the rotary blade 3 forms a substantially straight line with the bracket 31 due to centrifugal force during rotation, and the locus of its blade edge is circular. On the lower part of the hood 10, a grass raising tool 5 is attached to the rear of the traveling direction at a slight distance from the locus of the cutting edge. The grass raising tool 5 is formed to have a length substantially the same as the length between the side walls 101, and its height is set so as to be located slightly below the lower end of the track of the cutting edge. The grass raising tool 5 has a triangular tubular shape and has an inclined surface 51 on the rotary blade 3 side. Further, a metal guard roller 6 which is a guard body is attached to the rear of the grass raising tool 5. The guard roller 6 is rotatably supported by a bearing 61, and its height is set so that its bottom is slightly lower than the grass raising tool 5.

(Operation) FIGS. 4 and 5 are explanatory views showing a usage state. The operation of this embodiment will be described with reference to FIGS. First, the rotary attachment means 2 is attached to the tip of the arm 71 of the backhoe 7 with the attachment pin P, and the mowing device A is attached. As a result, the mowing device A can be moved in each direction by the operation of the boom 72 and the arm 71 of the backhoe 7. Then, for example, the backhoe 7 is arranged on the embankment, the boom 72 and the arm 71 are operated, and the blade edge of the rotary blade 3 of the mowing device A is made parallel to the slope with a certain distance. Next, the prime mover E is operated to rotate the rotary blade 3 in the direction of the arrow shown in FIG. Then, by running the backhoe 7 in this state, the grass on the slope can be cut (see FIG. 4). As another work method, the backhoe 7 is stopped at an arbitrary position, and only the boom 72 and the arm 71 are operated to perform the mowing work within the reach of the mowing device A. When the work is finished, the position of the backhoe 7 is changed. It is also possible to move it and perform mowing work in the same manner. Even if the slope is uneven and not flat, the guard roller 6 protects the rotary blade 3 from coming into contact with the slope, so that the rotary blade 3 is not easily damaged during the work. If the grass in the work area has fallen down, the grass cutting device A is advanced so that the direction of rotation of the rotary blade 3 and the direction in which the grass falls down are reversed, and the grass is tilted. It is raised by the surface 51 and reliably cut by the rotary blade 3.

After mowing one line on the outward path, the motor M is operated to rotate the mowing machine body 1 by 180 degrees (see FIG. 5). By this rotation, the position of the rotary blade 3 is also reversed. Then, the position of the mowing device A is readjusted so that the cutting position does not overlap the already cut surface. In this state, if the backhoe 7 is run in the direction opposite to the forward path, the rotary blade 3 is located on the advancing side, so the grass can be mowed on the return path, there is no waste in running, and work efficiency is high. Is good. In this embodiment, the mower A is provided with the prime mover E in close proximity to the rotary mounting means 2 side, and therefore has good balance when mounted on the tip of the arm 71. Further, when the mowing device A is moved, even if the end of the mowing device A collides with an obstacle, the impact on the prime mover E is small and is not easily damaged. The present invention is limited to the illustrated embodiment. However, various modifications are possible within the scope of the claims for utility model registration.

[0014]

[Effect of device]

 The present invention has the above configuration and has the following effects. (A) The mower body is rotatably provided on the mounting means. For this reason, the main body of the mower can be rotated around the central axis of rotation, such as reversing, at the required angle, so when the hydraulic shovel excavator travels back and forth to perform mowing work, not only in the forward path but also in the return path I can work. Therefore, the work efficiency is doubled even with simple calculation. (B) If the grass in the work area has fallen, the grass is raised by the inclined surface of the grass raising tool by advancing the grass cutting device so that the rotating direction of the rotary blade and the falling direction of the grass are opposite. Since it can be reliably cut with the rotary blade, there is no uncut residue. (C) If the lawn mower body has a guard body at the bottom, the guard body protects the rotary blade from coming into contact with the work surface even when the work surface, such as the slope for mowing, is not flat. Therefore, the rotary blade is not easily damaged during work.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a mowing device.

FIG. 2 is a schematic side view showing an embodiment of a mowing device.

FIG. 3 is an explanatory view of a main part showing a structure of a rotating body.

FIG. 4 is an explanatory diagram showing a usage state on the outward path.

FIG. 5 is an explanatory diagram showing a use state on a return path.

[Explanation of symbols]

 A mower device 1 mower body 10 hood 2 mounting means 23 rotating body 3 rotary blade 5 grass raising tool 6 guard roller

Claims (3)

[Scope of utility model registration request] 1. A mowing device which is used by being attached to an arm tip of a hydraulic excavator excavator, wherein the mowing device is an attachment means (2) attached to the arm, and is rotatable on the attachment means (2). The main body of the mower provided in
(1) and rotating means for rotating the mower body (1), the mower body (1) includes a base body, a rotary blade (3) arranged on the base body, and A mower that has a prime mover that is independent of the drive system of the excavator. 2. A mowing device which is used by being attached to the end of an arm of a hydraulic excavator excavator, the mowing device comprising: an attaching means (2) attached to the arm and a rotating means for the attaching means (2). The main body of the mower provided in
(1) and rotating means for rotating the mower body (1), the mower body (1) includes a base body, a rotary blade (3) disposed on the base body, and A mowing device comprising: a grass raising tool (5) provided behind the rotary blade (3) in proximity to the rotary track of the blade edge. 3. A rotary blade (3) is provided at the bottom of the mower body (1).
The grass cutting device according to claim 1 or 2, further comprising a guard body that protects the blade edge of the blade from hitting the ground.