JPH0340704Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention attaches a working machine to the axle, and also attaches a support arm for the auxiliary wheels for movement to the front of the machine frame. This invention relates to a walk-behind mobile agricultural machine that is mounted so as to be switchable and reversible between the action release position and the release position.

[Conventional technology]

Conventionally, in order to prevent the support arm 10 from falling when the auxiliary wheel is in the working position, a positioning pin has been provided near the pivot at the base end of the arm so that it can be inserted and removed.

[Problem that the invention attempts to solve]

Therefore, when traveling using auxiliary wheels, the entire weight of the aircraft is applied to the pivot point of the support arm, and when an impact is applied, such as when passing over an uneven surface, the pin that determines the operating posture of the support arm Excessive stress was applied to the parts, causing deformation and damage.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to avoid damage to the pivot portion of the support arm when the auxiliary wheel is in the operating position.

[Means for solving problems]

A characteristic feature of the present invention is that a stopper is provided in the middle of the support arm so as to protrude from the middle of the support arm, the stopper coming into contact with the lower surface of the body frame in the operating position.

[Effect]

According to the above configuration, the load acting on the auxiliary wheel when the auxiliary wheel is in its working position is shared between the stopper and the pivot portion of the support arm.

Also, when the support arm of the auxiliary wheel is reversed to the deactivation position, a stopper will protrude in front of the support arm that has swung upwards, and this stopper can be used not only to guard the front of the fuselage, but also to
Can be used as a handle when lifting the aircraft.

[Effect of idea]

Therefore, it is possible to reduce the force applied to the pivot part of the support arm of the auxiliary wheels when moving the aircraft, thereby reducing deformation and damage.The stopper can also be used not only for load sharing, but also for forward guarding and lifting the aircraft. It can also be effectively used as a handle, which is useful for practical purposes.

〔Example〕

As shown in Fig. 3, auxiliary wheels 3 for movement are provided at the front of the fuselage frame 2 on which the engine 1 is mounted, and a tilling rotor as a working machine is mounted on the axle 5 at the bottom of the transmission case 4 disposed at the rear of the fuselage. 6, and a hitch 8 for attaching a resistance rod 7 for adjusting the plowing depth of the tiller rotor 6 and a control handle 9 at the rear of the machine body to constitute a walking type mobile agricultural machine for mid-tillage management.

To explain the auxiliary wheel 3 in detail, the auxiliary wheel 3 is attached to the free end of the support arm 10, and the support arm 10 is switched and reversed between an operating position located at the bottom of the fuselage and an action release position located above. The support arm 10 can be set freely in the working position when moving the machine, and the auxiliary wheels 3 can be set in the working position during plowing work.
The action is released.

The specific structure for switching and reversing the support arm 10 between the working position and the working position is as shown in FIGS. 1 and 2. As shown in FIGS. In between, the U-shaped support arm 10 is supported rotatably around the pin 12 by a pivot pin 12 penetrating through the plates 11, 11 and the support arm 10. As shown in FIG. 1, the support arm 10 can be fixed in the release position by inserting and removing the pin 15 between the hole 13 formed in the upper part of each support arm 11 and the hole 14 formed in the support arm 10. It is set as. Note that 16 in the figure is a pin for preventing slipping off.

Arch-shaped stoppers 17 for receiving auxiliary wheels are welded and fixed to both end surfaces of the support arm 10, and when the support arm 10 is in the working position, the weight of the aircraft is reduced by bringing the support arm 10 into contact with the lower surface of the aircraft frame 2. All are arranged to avoid joining the pivot of the support arm 10. Furthermore, the stopper 17 protrudes forward of the machine when the support arm 10 is in the deactivated position, and has the function of preventing obstacles from coming into direct contact with the support arm 10 during work travel. do. Furthermore, if the support arm 10 is placed in the release position when storing the aircraft, the stopper 17 protruding forward can be
Since it can be used as a handle, it is effective when lifting the aircraft and changing its direction.

[Another example]

In the embodiment described above, the stopper 17 is formed in an arch shape, but it may also be L-shaped, and various shapes can be used for the stopper 17.

[Brief explanation of the drawing]

The drawings show an embodiment of the walking-type mobile agricultural machine according to the present invention, in which Fig. 1 is a perspective view showing the auxiliary wheel in a released position, Fig. 2 is a sectional view showing the pivot structure of the auxiliary wheel, and Fig. 3 is a cross-sectional view showing the pivot structure of the auxiliary wheel. FIG. 2 is an overall side view of the walking-type mobile agricultural machine. 2... Airframe frame, 3... Auxiliary wheels, 5...
Axle, 6... Working machine, 10... Support arm, 17
...stopper.

Claims (1)

[Claims for Utility Model Registration] A working machine 6 is attached to the axle 5, and a support arm 10 for the auxiliary wheel 3 for movement is attached to the front of the machine frame 2, with the working position located at the bottom of the machine body and the deactivation position located above. The walking type mobile agricultural machine is mounted so as to be switchable and reversible between postures, and has a stopper 17 protruding from the middle of the support arm 10, which abuts the lower surface of the body frame 2 in the working posture. Agricultural machinery. The walking type mobile agricultural machine according to claim 1, wherein the stopper 17 is arch-shaped.