JPH0135146Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a cutting blade device for cutting the top surface of the ridge at the front end of the machine frame, and a cutting blade device for cutting the slope of the ridge on one of the left and right sides of the machine frame. This invention relates to an improvement in a mower that can be used to simultaneously cut grass on two sides: grass on the top of a ridge and grass on a slope.

When the above-mentioned mower runs on the upper surface of a ridge and cuts grass on two sides, the upper surface of the ridge and the slope, it cuts the grass on the shoulder that is the boundary between the upper surface of the ridge and the slope. Grass that has been cut will now remain uncut, and this uncut grass will cause the cutting action part of the cutting blade of the top mowing blade device to
Problems arise even if the ridge is extended beyond the shoulder of the ridge and extends above the slope.

The purpose of the present invention is to solve this problem and make it possible to cleanly cut the grass growing on the shoulder of the ridge.

The grass mower according to the present invention to achieve this purpose has a cutting blade device for mowing the top surface of the ridge at the front end of the machine frame, and a cutting blade device for mowing the slope of the ridge on one side of the left and right side of the machine frame. In the lawn mower equipped with a blade device, the upper end side of the cutting action part of the slope cutting blade device is viewed from the front side of the machine frame, and the upper end side of the cutting blade device for mowing the slope surface is It is characterized by being configured so that it can be set in a state where it crosses the side end side of the cutting action portion of the blade.

Next, embodiments will be described in detail with reference to the drawings.

In Figures 1 and 2, reference numeral 1 denotes a machine frame that is long in the front and back, and is shaped like a shaft tube, and the engine 2 has its output shaft (not shown in the drawings) at the rear end of the machine frame. The shaft is assembled and supported so as to protrude into the inner cavity of the machine frame 1 having a tubular shape.

3 is a control handle provided at the rear end portion of the machine frame 1 so as to protrude rearward;
0 is mounted and supported by a mounting member 31 that is integrally assembled on the upper surface side of the rear end portion of the machine frame 1.

Reference numeral 4 denotes a running wheel mounted on the rear end side of the machine frame 1. A stay 10 that projects diagonally rearward and downward is provided near the rear end of the machine frame 1, and the lower end of the stay 10 The transmission shaft 21 is supported on the transmission case 20 provided near the rear end of the machine frame 1, and the sprockets 22, 23 are supported on the transmission shaft 21.
It is driven and rotated by the rotational power transmitted through the transmission chain 24 and transmitted from the output shaft of the engine 2 through the transmission mechanism in the transmission case 20, but may be an idler wheel.

Reference numeral 6 denotes a small-diameter stabilizing wheel located ahead of the aforementioned running wheels 4 and pivoted on the machine frame 1. In this embodiment, a steel plate is punched out in a rough circular saw shape or a star shape, and the periphery is Ring plate 6b provided with teeth protruding in the radial direction
are provided at both ends of the drum-shaped main body portion 6a, but may be configured as appropriate.

Reference numeral 5 denotes a cutting blade device for mowing the upper surface of a ridge, which is arranged in front of the stabilizing wheels 6, 6 and installed at the front end of the machine frame 1, and is formed in the shape of a cylinder at the front end of the machine frame 1. A gear case 50 is integrally assembled, a blade attachment plate 52 is attached to a vertical rotating shaft body 51 that is rotatably supported on the gear case 50, and a plurality of cutting blades 53 are radially projected from the blade attachment plate 52. This is a rotary blade type cutting blade device which is mounted and configured as shown in FIG.
1 is connected to the output shaft of the engine 2 through a transmission gear housed in a gear case 50 and a transmission shaft housed in a tubular machine frame 1, and the cutting blade 53 is driven by the operation of the engine 2. It rotates and acts to cut the grass.

Reference numeral 7 denotes a cutting blade device for mowing slopes, which is disposed laterally between the running wheels 4 and the stabilizing wheels 6 and installed on one of the right and left sides of the machine frame 1, and is located at the rear end of the machine frame 1. A mounting machine frame 70 is provided on one side of the approach, and a mower for mowing the slope is connected to the lower end of a downwardly extending support machine frame 71 attached to the mounting machine frame 70 via a longitudinal connecting shaft 72. A frame 7a of the blade device 7 is supported vertically and rotatably, and a rotary shaft body 76, on which a blade mounting plate 75 for attaching a cutting blade 74 is fixed, is mounted on a bearing support member 73 provided on the frame 7a. The rotating shaft 76 is connected to the rotating shaft 51 in a gear case 50 provided at the front end of the machine frame 1 through a flexible shaft housed in a flexible tube 77, and a handle is provided on the frame 7a. By connecting the distal end side of a release wire 33 whose proximal end is connected to an operating lever 32 provided at 3, and operating the operating lever 32, the frame 7a is moved to the slope of the ridge W as shown in FIG. Set it to slope at an angle corresponding to the slope angle of Y, and in that state
The grass is cut.

Moreover, this cutting blade device 7 for mowing slopes is
As shown in FIG. 3, when the cutting blade 74 is set at the working position for mowing the grass on the slope Y of the ridge W, the upper end side of the rotational trajectory of the cutting blade 74, which is the cutting working part of the cutting blade 74, is As seen from the front, as shown in FIG. 3, the cutting blade 53 of the cutting blade device 5 for top surface mowing is located on the top surface Z of the ridge W and performs the cutting action.
The above-mentioned mounting machine frame 70 and The mounting position of the support machine frame 71, connection shaft 72, frame 7a, etc. is set, and the machine frame 1 is
It is mounted on the.

4 and 5 show another embodiment.

In this embodiment, a cutting blade device 5 for cutting the top surface of the ridge W is mounted on the front end of the machine frame 1, and a cutting blade device 5 for cutting the slope of the ridge W is mounted on one of the left and right sides of the machine frame 1. The basic configuration of installing 7 is shown in Figures 1 and 2.
This is the same as the embodiment shown in the figure, and the engine 2 supported above the rear end of the machine frame 1 is operated by the above-mentioned top mowing blade device 5, slope mowing blade device 7, and the machine frame 1. The frame 7a of the cutting blade device 7 for mowing slopes, which is mounted on the side of the machine frame 1 and is mounted on the side of the machine frame 1, is driven by the handle 3.
By operating a control lever 32 that is pivotally supported, the release wire 33 connected to the control lever 32 is pulled or loosened to move up and down, and the mowing blade device 7 for mowing slopes is rotated up and down.
It is the same as in the first embodiment that the ridge W is placed along the slope Y of the ridge W, and the same reference numerals are used to refer to the components having the same effect. Cutting blade device 5, 7 for surface cutting
The cutting blades 53 and 74 are clipper-shaped.

In the case of the top mowing blade device 5 and the slope mowing blade device 5, the power is transmitted to the machine frame 1 which is the main frame.
A shaft tube-shaped subframe 1a containing a transmission shaft inside is provided below the machine frame 1, and is integrally connected to the machine frame 1.
A gear case 50, which is a cutting blade box that can support a clipper-shaped cutting blade 53 on the front side, is mounted on the front end of it, and an engine 2 is mounted on the intermediate part of the subframe 1a.
The output shaft of the transmission wheel 1b is pivotally supported, and the transmission is conducted from the transmission wheel 1b to the drive mechanism in the gear case 50 via the transmission shaft in the subframe 1a. In the case of the cutting blade device 7, its frame 7a formed in the cutting blade box
is supported by a support arm 78 that is rotatably supported vertically on the subframe 1a, and an input shaft that projects rearward from the frame 7a is connected to the middle of the subframe 1a through a sprocket and a conduction chain 79. This is done by conduction to a conduction sprocket provided in conduction to a conduction shaft within the frame 1a.

Therefore, the cutting blade device 7 for mowing the slope has a sixth blade.
As shown in the figure, when the grass is cut on the slope Y of the ridge W, the above-mentioned first
As in the case of the embodiment, the upper end of the cutting portion of the cutting blade 74 is as shown in FIG.
In front view, the cutting blade 53 of the cutting blade device 5 for top mowing located on the upper surface of the ridge W crosses the side end of the cutting action part of the cutting blade 53 and protrudes upward. It is mounted on the machine frame 1 as shown in FIG.

Next, to explain the function and effect, the mower according to the present invention configured as described above has its body positioned on the upper surface Z of the ridge W, and the cutting blade device 7 for slope mowing is moved along the slope Y. When the cutting blade 53 of the cutting blade device 5 for cutting the top surface of the ridge W is mowed at the same time, the cutting action part of the cutting blade 53 of the cutting blade device 5 for top surface mowing is When the grass on the shoulder of the ridge W, which was pushed down to the side of the slope Y of the ridge W at the side edge and escaped without being cut, rises again due to the passage of the cutting blade 53, The upper end of the cutting part of the cutting blade 74 of the cutting blade device 7 for mowing slopes acts on the grass, and the grass is cut, so that the grass that has been cut at the shoulder of the ridge is removed. You will be able to cut grass on two sides, the top of the ridge and the slope, at the same time without leaving anything behind.

[Brief explanation of drawings]

Figure 1 is a side view of a mower that can implement the present invention, Figure 2 is a plan view of the same mower, Figure 3 is a front view of the main parts of the mower in working condition, and Figure 4 is another implementation. A side view of the example, FIG. 5 is a partially cutaway plan view of the same, and FIG. 6 is a front view of the main parts of the same in a working state. Explanation of drawing symbols, 1...Machine frame, 1a...Subframe, 1b...Transmission wheel, 10...Stay, 2...
...Engine, 20...Mission case, 21...
...Transmission shaft, 22, 23...Sprocket, 24...
... Conduction chain, 3 ... Control handle, 30 ... Proximal end, 31 ... Mounting member, 32 ... Operation lever,
33... Release wire, 4... Running wheel, 5
...Mowing blade device, 50...Gear case, 51...Rotating shaft body, 52...Cutter mounting board, 53...Mowing blade, 6
... Stable wheel, 6a ... Main body part, 6b ... Wheel plate, 7
...Mower blade device, 7a...Frame, 70...Mounting machine frame, 71...Support machine frame, 72...Connection shaft, 73
... Bearing support member, 74 ... Cutting blade, 75 ... Blade mounting board, 76 ... Rotating shaft body, 77 ... Flexible tube, 78 ... Support arm, 79 ... Conduction chain, W ... Ridge, Y...Slope surface, Z...Top surface of ridge.

Claims (1)

[Scope of utility model registration request] In a grass mower that is provided with a cutting blade device for mowing the top surface of the ridge at the front end of the machine frame and a cutting blade device for mowing the slope surface of the ridge on one of the left and right sides of the machine frame, the mower for mowing the slope surface. Set the blade device in such a state that the upper end side of the cutting action portion of the cutting blade thereof crosses the side end side of the cutting action portion of the cutting blade of the cutting blade device for upper surface mowing, when viewed from the front side of the machine frame. A lawn mower characterized by being equipped so as to be able to do so.