JP2020043788A - Mowing apparatus and mowing recovery apparatus - Google Patents

Abstract

To provide a mower, and a mowing recovery apparatus including a recovery system for recovering grasses mowed by the mower, capable of performing efficiently a mowing work and a recovery work on an inclined plane or in a wide range.SOLUTION: A mowing apparatus 1 includes: a housing 4 having an opening 2 opened to a mowing plane, and having a suction port 3 on a position facing to the opening 2; and a mowing part 5 constituted of a revolving shaft 6 extending horizontally in the housing 4, a plurality of cutting edge parts 7 arranged at prescribed intervals on the revolving shaft 6, and a plurality of ventilation blades 8 arranged between the plurality of cutting edge parts 7. A mowing recovery apparatus 100 comprises the mowing apparatus 1 and a suction apparatus 110 is also provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mowing device having a structure optimal for mowing not only grass on a flat ground but also a side wall surface of a highway, and a mowing collecting device combining the mowing device and a suction device.

  Patent Document 1 (Japanese Patent Application Laid-Open No. 61-1111619) is a lawnmower in which a cutting blade is provided inside a cutting blade case so as to be rotatable around a vertical axis, and the inside space of the cutting blade case is cut. A partition wall, which is divided into a first space portion and a second space portion above the blade moving path, faces the front side of the fuselage on the outer peripheral side portion of the cutting blade moving path, and a downward air inlet is provided in the first space portion. A lawn mower provided in a formed state and provided with a device for sucking and discharging air inside the first space portion is disclosed. As a result, only the first space, which is a part of the cutting blade case, serves as a suction chamber, and exhibits a strong turf suction force even if the suction and discharge device is a small one having a relatively low capacity. It is.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 63-251012) provides a cutter housing having an opening at a lower surface facing the ground at a lower part of a vehicle body equipped with an engine, and is rotated around a vertical axis in the cutter housing. In a self-propelled mowing machine accommodating a cutter for cutting grass, the cutter is formed in a substantially flat shape, and a discharge port for discharging grass cut by the cutter onto the ground is provided at a rear portion of the cutter housing. Also disclosed is a self-propelled mowing machine provided with a suction port for sucking and collecting grass discharged from the discharge port at a position separated rearward in the traveling direction of the vehicle body.

  Patent Document 3 (Japanese Patent Application Laid-Open No. 7-503610) discloses a device that generates a suction airflow for sucking odor stems from a casing inlet into a casing, and a device that cuts grass stalks immediately after the casing inlet. At least one mowing device provided, wherein the plane defined by the casing inlet has an angle with respect to the normal growth direction of the grass stalk in the operating position of the nine-piece weeder. In a suction-type mowing machine, a mowing machine is disclosed in which the mowing device has at least one blade shaped like a ventilation fan.

  Patent Document 4 (Japanese Patent Application Laid-Open No. H11-275923) discloses a first reel mower disposed in a central area of a draft machine in a left-right manner, and a first reel mower and a cutting width on each of the left and right sides of the first reel mower. A mowing device comprising second and third reel mowers arranged so as to overlap each other, and each of the reel mowers being provided with a duct for sucking grass, wherein the mowing of the mowing by the second and third reel mowers is performed. A mowing device is disclosed in which the twisting directions of the reel blades of the second and third reel moldings are set to be opposite to each other so that the feeding direction to each of the ducts is closer to the center in the machine body width direction.

  Patent Document 5 (Japanese Patent Application Laid-Open No. 2015-92846) discloses a blade including a rotating shaft having a rotating shaft extending vertically, and a blade provided on the rotating shaft so as to rotate around the rotating shaft. The unit and the blade unit are covered from above to create a mowing space inside the unit, and the blade unit is covered from above to create a mowing space inside the unit. A blade housing forming a concave portion that spreads out, a deck lid that creates an intermediate space by covering the upper part of the concave portion, a temporary air flow portion that allows air flow between the outside and the intermediate space, A mower unit including a two-hour air circulation unit that allows air to flow between the intermediate space and the mowing space is disclosed.

JP-A-61-111619 JP-A-63-25512 JP-A-7-503610 JP-A-11-275923 JP-A-2005-92846

  At present, weeds growing on the side wall of the highway are difficult to mow because the weeds grow at an inclined location, and it is not possible to use the conventional mowers and mowers described above. For this reason, a method has been adopted in which mowing is performed using a hand-held mowing machine by sea tactics, and weeds that have been cut with a rake or the like are collected and collected on a carrier of a garbage collection vehicle. However, since the work area of the mowing work on the side wall surface of the expressway is wide, a device having good workability of mowing and collecting work is demanded.

  For this reason, the present invention provides a mowing and collecting device including a mowing machine capable of efficiently performing mowing and collecting operations on an inclined surface and a wide range and a collecting device for collecting grass cut by the mowing machine. is there.

  A mowing apparatus according to the present invention includes a housing having an opening that opens to a mowing surface, a housing having a suction port at a position facing the opening, a rotating shaft extending horizontally into the housing, and a rotating shaft. And a mowing part comprising a plurality of cutting blades arranged on the shaft at a predetermined interval and a plurality of blowing blades arranged between the plurality of cutting blades.

  According to the present invention, by rotating the rotating shaft to rotate the cutting blade and the blower blade and bringing the opening of the housing close to the mowing surface, weeds taken in from the opening are cut by the cutting blade and simultaneously. The weeds cut by the suction force generated by the blowing blades can be moved to the suction port side.

  Further, the cutting blade portion is a plate blade portion that rotates about the rotation axis, a connecting portion that is disposed at a predetermined interval on an outer peripheral portion of the plate blade portion, and a tip end of the connecting portion rotatably. It is preferable that the cutting teeth are formed in a V-shape and fixed to the connecting part. Preferably, the plate blade portion is hexagonal, and the connecting portion is provided at each of the six vertices of the hexagon.

  Thereby, when the rotation shaft rotates, the plate blade portion provided on the rotation shaft rotates, and the connection portion and the cutting tooth portion provided at each apex of the plate blade portion are centrifuged with the rotation of the plate blade portion. Since it rotates in a state of being extended by the force, weeds can be surely cut by the teeth of the incisors. Further, in this structure, the weeds are cut by the teeth in the direction of air blowing by the blower blades, so that the cut weeds can be reliably guided to the suction port.

  Further, the present invention resides in a mowing and collecting device comprising the mowing device described above and a suction device connected to the suction port of the housing and for sucking grass cut by the mowing device. It is preferable that the suction device is a suction device according to Japanese Patent Application No. 2018-075130 filed by the present inventors.

  Specifically, the suction device includes a suction pipe having suction ports and discharge ports at both ends thereof, and air that is located on an outer periphery of the suction pipe and has a cross section that decreases toward a peripheral portion of the discharge port of the suction pipe. It is preferable that the apparatus further includes a blower pipe that defines a passage and blows air from around a discharge port of the suction pipe in a discharge direction of the suction pipe, and a blower that sends air to the blower pipe.

  Since this suction device does not use a fan, it is possible to surely suck the cut weeds and the like.

  Further, by providing a drive mechanism for moving and rotating the mowing device up, down, left and right by hydraulic pressure or the like, it is possible to move the mowing device relative to the mowing surface, thereby improving workability.

  ADVANTAGE OF THE INVENTION According to this invention, while the opening part of the housing provided with the mowing part is facing a mowing surface, the rotating shaft arrange | positioned horizontally with respect to the opening surface rotates, and a plurality is arrange | positioned along a rotating shaft. At the same time as the cutting blade part rotates, the blowing blades disposed between the cutting blade parts rotate, and the weeds cut by the cutting blade part are sent to the suction port side by the suction force generated by the blowing blade, and the cutting blade Since the rotation direction of the section and the feeding method of the cut weeds are the same, it is possible to prevent the cut weeds from staying in the housing and hindering the operation of the cutting blade section. It has the effect that it can be implemented.

It is a front view of the mowing device concerning the example of the present invention. It is a side sectional view of a mowing device concerning an example of the present invention. (A) is explanatory drawing which showed the structure of the cutting blade part which concerns on the Example of this invention, (b) is explanatory drawing in the state where the cutting blade part rotated. It is explanatory drawing which showed the structure of the incisor part. It is an explanatory view showing a state where it is a mowing device concerning an example of the present invention and is provided with a suction device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, a mowing device 1 according to the present invention includes a housing 4 having an opening 2 opening to a mowing surface, and having a suction port 3 at a position facing the opening 2. Have. The housing 4 has a front ceiling portion 41 formed in a concave shape from the opening portion 2 toward the suction port 3 and a convex shape from the front ceiling portion 41 toward the suction port 3, and defines a rotation space 42 therein. A ceiling part 40 comprising an intermediate ceiling part 43 formed; a bottom part 44 extending in parallel from the suction port 3; and side wall parts 45 and 46 erected from both ends of the bottom part 44 to support the ceiling part 40. Composed of

  The mowing part 5 is provided in the rotating space 42 in the housing 4. The mowing part 5 includes a rotating shaft 6 extending horizontally into the housing 4, a plurality of cutting blades 7 arranged at predetermined intervals on the rotating shaft 6, and a space between the plurality of cutting blades 6. A plurality of (four at each location in this embodiment) blowing blades 8 are arranged at both ends of the rotating shaft 6. At both ends of the rotating shaft 6, holding plates 12, 13 for holding the ends of the blowing blades 8 located on both sides are arranged.

  The rotating shaft 6 is connected to an external power, for example, a conductive motor, a hydraulic motor, or the like to obtain a driving force. The rotating shaft 6 has one end rotatably supported by the one side wall 45 via the bearing 9 and the other end fixed to the cap 10 provided on the other side wall 46. It is rotatably supported via. Further, since the cap portion 10 is provided corresponding to the size of the cutting blade portion 7, the entire mowing portion 5 can be removed from the housing 4 by removing the cap portion 10 from the side wall portion 46. The maintenance of the mowing part 5 can be easily performed. Further, it is preferable that a resin material such as NC nylon is disposed on the side walls 45 and 46 of the housing 4 that rotatably holds both ends of the rotating shaft 6 so that the cut weeds are not bitten.

  As shown in FIGS. 3A and 3B, the cutting blade 7 has a hexagonal plate blade 70 centered on the rotating shaft 6 and six vertices of the plate blade 70. Each of the connecting portions 71 and a cutting tooth portion 72 rotatably provided on the connecting portion 71.

  As shown in FIG. 4, the connecting portion 71 has a U-shaped metal member 74 fixed to each of the six vertices of the plate blade portion 70 with a screw or the like via an elastic member 73, and one end of the U-shaped metal member 74. Are connected to each other, and a U-shaped bracket 76 is connected to the other end of the O-shaped bracket 75. Further, the cutting teeth 72 are formed in a V-shape which is welded and fixed to the tip of the U-shaped bracket 76.

  With the above configuration, when the rotating shaft 6 is rotated by the external power, the plate blade portions 70 arranged at predetermined intervals on the rotating shaft 6 rotate, and further, the connecting portions provided at the respective vertices of the plate blade portion 70. The centrifugal force 71 and the incisors 72 extend in the radial direction of the rotating shaft 6 and rotate. Thereby, the weeds taken in from the opening 2 by the movement (forward) of the housing 4 are cut by the cutting teeth 72 that are rotated by the rotation of the plate blade 70, and the cutting teeth are generated by the blowing generated by the rotation of the blowing blade 4. The weeds cut by the section 72 are sent to the inlet 3. Further, the cutting direction of the cutting teeth 72 also helps to move the cut weeds toward the suction port 3 side.

  As shown in FIG. 5, the mowing and collecting apparatus 100 according to the second embodiment of the present invention is connected to the mowing apparatus 1 and the suction port 3 of the housing 4, and sucks the grass cut by the mowing apparatus 1. An apparatus 110 is provided. The suction device 110 has a suction pipe 113 having a suction port 111 and a discharge port 112 at both ends thereof, and is located on the outer periphery of the suction pipe 113, and has a cross section reduced toward a peripheral portion of the discharge port 112 of the suction pipe 113. A blower tube 115 that defines an air passage 114 that blows air and blows air from around the outlet 112 of the suction tube 113 toward the discharge direction of the suction tube 113, and a blower 120 that sends air to the blower tube 115. It is provided. Further, the tip of the blowing pipe 116 of the blower pipe 115 is opened to the collection box 130, and the weeds cut by the mowing device 1 are sucked by the suction device 100 and discharged to the collection box 130.

  Further, by providing a drive mechanism for moving and rotating the mowing device 1 vertically and horizontally by hydraulic pressure or the like, the mowing device 1 can be moved with respect to the mowing surface, thereby improving workability.

DESCRIPTION OF SYMBOLS 1 Mowing apparatus 2 Opening 3 Suction port 4 Housing 6 Rotating shaft 7 Cutting blade part 8 Blower blade 40 Ceiling part 41 Front ceiling part 42 Rotation space 43 Intermediate ceiling part 44 Bottom part 45, 46 Side wall part 70 Plate blade part 71 Connecting part 72 Incisors

Claims (3)

A housing having an opening that opens to the mowing surface and having a suction port at a position facing the opening;
Mowing mower constituted by a rotating shaft extending horizontally into the housing, a plurality of cutting blades arranged at a predetermined interval on the rotating shaft, and a plurality of blowing blades arranged between the plurality of cutting blades. And a mowing device.   The cutting blade portion is provided on a plate blade portion that rotates about the rotation axis, a connecting portion disposed at a predetermined interval on an outer peripheral portion of the plate blade portion, and is rotatably provided at a tip of the connecting portion. The mowing device according to claim 1, wherein the mowing device is constituted by a cutting tooth portion, and the cutting tooth portion is formed in a V-shape and fixed to the connecting portion. A mowing and collecting device, comprising: the mowing device according to claim 1 or 2; and a suction device connected to the suction port of the housing and configured to suction the grass cut by the mowing device.

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