JPH0591238U - Mower - Google Patents

Abstract

(57) [Abstract] [Purpose] The drive system of the reciprocating type cutting blade has a safe and compact structure, and the cutting blade can be offset or tilted parallel to the lateral direction to effectively mow slopes such as planes and ridges. And [Structure] The drive case 5 laterally moves in parallel between a machine body equipped with wheels 1, an engine 2, a handle 3 and the like, and a drive case 5 behind the drive case 5 which supports and drives the reciprocating cutting blade 4. A transmission case 8 in which the parallel links 6 and 7 are interposed so that the rear portions of the parallel links 6 and 7 are supported.
The rearwardly-directed cylindrical portion 8a formed in the above is rotatably fitted to the front-rear support cylindrical portion 9a formed in the transmission case 9 on the machine body side, and the inside of one of the links 6 from inside the both transmission cases 9 and 8 is formed. It is configured such that it can be transmitted to the cutting blade drive shaft 10 in the drive case 5 through the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grass mower capable of effectively laterally cutting plane cuts or ridges by translating or tilting a reciprocating cutting blade in the lateral direction.

[0002]

[Prior Art]

 In this type of conventional lawn mower, a reciprocating cutting blade is horizontally installed in front of a machine equipped with wheels, an engine, a handle, etc. in parallel with the axle.

[0003]

[Problems to be solved by the device]

 However, there is no problem when plane cutting the upper surface of the ridge in the field, but when cutting the sloping side of the ridge, the machine body must be inclined laterally when the cutting blade is placed along the side. However, it is unstable and dangerous, and it is difficult to maneuver. In addition, the ridges are broken by the wheels and the workability is poor.

[0004]

[Means for Solving the Problems]

 The present invention has been devised to solve such problems and to make the drive system of the cutting blade safe and with a compact structure.Therefore, the aircraft equipped with wheels, engine, handle, etc., A parallel link is provided between the drive case, which supports and drives the reciprocating cutting blade, and the drive case behind the drive case, so that the drive case can be translated in the lateral direction. The formed rearward-facing cylindrical portion is rotatably fitted to the front-rear support tubular portion formed on the machine-side transmission case, and is cut through the inside of one of the two transmission cases to the inside of the drive case. It is configured so that it can be transmitted to the blade drive shaft.

[0005]

[Action]

 Therefore, the plane cutting can be performed in the same way as in the past by advancing the machine body, and the parallel link can move the cutting blade in the lateral direction in parallel to perform offset cutting. Then, by tilting the cutting blade laterally while rotating the cylindrical part of the transmission case that supports the parallel links to the support cylindrical part of the machine side transmission case, the cutting blade can be placed along the side of the ridge. As a result, the side cutting can be effectively performed, and even if the position and the position of the cutting blade change, the cutting blade can be effectively driven through one of the links while keeping the machine stable.

[0006]

【Example】

 1 to 4 show an embodiment of the present invention, and FIG. 1 is a side view schematically showing a mower, and a body equipped with wheels 1, an engine 2, a handle 3 and the like is projected in front of the engine 2. The axle case 1 is hung vertically from the side of the transmission case 9 to be installed downward, and the handle 3 is hung above the engine 2. The rear portion of the support frame 12 that supports the reciprocating cutting blade 4 that has been installed is fixed to the front portion of the drive case 5, and the tip portion of the cutting blade drive shaft 10 that is mounted inside the drive case 5 in the machine front-rear direction is installed. The cutting blade 4 is transmission-coupled to the cutting blade 4 via the transmission member 13.

As shown in FIGS. 1 to 3, the cutting blade 4 and the drive case 5 can be laterally moved in parallel between the machine body and the drive case 5. Although the parallel links 6 and 7 are interposed, the lower link 6 is formed in a hollow shape, and a cylindrical portion 6a vertically extending downward from the front portion of the link 6 is provided above the drive case 5. The cylindrical portion 6b is rotatably fitted to the portion 5a, and the cylindrical portion 6b is provided so as to extend downward from the rear portion of the link 6. A rearward-facing cylindrical portion 8a protruding from the rear of the case 8 is rotatably fitted to a front-rear direction supporting cylindrical portion 9a formed in the front portion of the transmission case 9, and is fitted to the outer peripheral portion of the cylindrical portion 8a. The pinion 16 of the forward / reverse rotation motor 15 above the transmission case 9 is attached to the fixed gear 14. And is transmitted from the input shaft 17 in the transmission case 8 driven in the transmission case 9 to the transmission shafts 18, 19 and 20 in the link 6 via the bevel gears in sequence and from the transmission shaft 20 at the end. It is configured to be transmitted to the cutting blade drive shaft 10 via both bevel gears 21.

A front end portion 7a of the link 7 on the upper side is pivotally connected to an upper side of the drive case 5 so as to be rotatable about a vertical axis 22. A rear end portion 7b of the link 7 is connected to the link end. 7 is pivotally connected to a support frame plate 23 fixed to the upper part of 7 so as to be rotatable about a vertical axis 24, and a link 6 is laterally attached to an upper end of a shaft section 25 standing above the rear portion of the link 6. The rotatable operating lever 26 is fixed so that it can be arbitrarily locked, but the parallel links 6 and 7 can also be installed side by side.

Therefore, the plane cutting can be performed in the same manner as in the past by advancing the machine body, and the parallel links 6 and 7 are rotated by the operation lever 26 to move the cutting blade 4 in the horizontal direction in the arrow A or B direction. Since offset cutting can be performed, the cutting blade 4 is laterally offset by the parallel links 6 and 7 on the ridge A in the field, and then the cylindrical portion 8a of the transmission case 8 is moved to the machine side transmission case 9 by the motor 15. When the cutting blade 4 is tilted in the lateral direction while being rotated with respect to the support tubular portion 9a, the cutting blade 4 can be effectively cut along the side surface of the ridge A as shown by a virtual line in FIG. Even if the attitude or position of the cutting blade 4 is changed in this way, the cutting blade 4 is effectively driven while being transmitted from the inside of the transmission case 8 to the cutting blade drive shaft 10 through the inside of one of the links 6 while keeping the aircraft stable. it can.

FIG. 5 shows another example of the mower, which can be displaced in the same manner as the above-mentioned embodiment. The blade 4a, the tire 1a having a hook shape, the mission case 17, the engine 2, the handle 3, the compressor 28. In the front of the machine equipped with the above, each nozzle 30 that is integrally connected to the side of the blade 4a and communicates with the compressor 28 via an air hose 29 is installed on the blade 4a in the direction opposite to the traveling direction of the machine. When the machine body moves forward, the grass received by the receiving blade 4a can be mowed by the high pressure air from the nozzle 30.

FIG. 6 shows still another example applied to the mowing machine shown in FIG. 5, in which a cover 31 is attached to the mowing section, and a cutting lever is provided at the rear of the cover 31 with a switching lever 32. A partition plate 33 that can be moved to the left and right is attached, and by moving the partition plate 33 to the left and right, it is possible to switch the cuttings to the left side and the right side by high-pressure air and discharge them.

FIG. 7 shows another example, in which the water in the tank 34 can be mowed by the high pressure water while being ejected from each nozzle 30 by the pump 35 at high pressure.

FIG. 8 shows another example of a mower, in which a rotary drum 37 is provided below a transmission case 36 that is transmitted by the engine 2a, and between the rotary drum 37 and the bracket 38 on the other side. A very thin and strong nylon or iron string-like body 39 is stretched so that its one end side is connected to the eccentric position of the rotary drum 37, and the rotation of the rotary drum 37 causes the string-like body 39 to form a virtual line. As shown in the figure, it is configured so that it is possible to mow while causing natural vibration.

[0014]

[Effect of the device]

 As described above, according to the present invention, the plane cutting can be performed in the same manner as in the conventional art by the forward movement of the machine body, and the parallel links 6 and 7 are rotated in the lateral direction to move the cutting blade 4 in the lateral direction in parallel to effectively perform the offset cutting. Therefore, on the ridge of the field, the cutting blade 4 is laterally offset by the parallel links 6 and 7, and then the cylindrical portion 8a of the transmission case 8 supporting the parallel links 6 and 7 is attached to the body side transmission case 9. When the cutting blade 4 is tilted in the lateral direction while being rotated with respect to the support tubular portion 9a, the cutting blade 4 can be along the side surface of the ridge, and the side cutting can be effectively performed. Even if the attitude or position of the cutting blade 4 is changed, the cutting blade 4 can be effectively driven through one of the links 6 while keeping the aircraft stable, and the aircraft can be operated stably, safely and easily, and Workability for side cutting In addition, the drive system of the cutting blade 4 can be installed inside one of the links 6 so as not to be exposed to the outside, and a safe and compact structure can be achieved. ..

[Brief description of drawings]

FIG. 1 is a side view schematically showing a mower according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing a part of FIG.

FIG. 3 is a plan view schematically showing a part of FIG.

FIG. 4 is an explanatory diagram showing an operating state of a cutting blade.

FIG. 5 is a perspective view schematically showing another example.

FIG. 6 is a perspective view showing still another example.

FIG. 7 is a perspective view schematically showing another example.

FIG. 8 is a perspective view showing still another example. .

[Explanation of symbols]

 1 Wheel 2 Engine 3 Handle 4 Reciprocating Cutting Blade 5 Drive Case 6 Parallel Link 7 Parallel Link 8 Transmission Case 8a Cylindrical Part 9 Aircraft Side Transmission Case 10 Cutting Blade Drive Shaft

Claims (1)

[Scope of utility model registration request] 1. A drive case 5 is laterally provided between an airframe equipped with wheels 1, an engine 2, a handle 3, etc. and a drive case 5 behind the drive case 5 which supports and drives a reciprocating cutting blade 4. A rearward-facing cylindrical portion 8a formed on a transmission case 9 on the machine body side is formed with a rearward-facing cylindrical portion 8a formed on a transmission case 8 that supports parallel links 6 and 7 for parallel movement and supports the rear portions of the parallel links 6 and 7. Is rotatably fitted to the support cylinder portion 9a of the above, and one of the links 6 is inserted from the inside of the both transmission cases 9 and 8.
A lawn mower characterized in that it can be transmitted through the inside to the cutting blade drive shaft 10 in the drive case 5.