JPH0499402A - Supporting arm in agricultural working truck - Google Patents

Abstract

PURPOSE:To obtain the subject supporting arm capable of readily moving an agricultural working machine in a vertical direction by supporting a supporting stage of an agricultural working machine at a top end of a link installed on a working truck in freely rotatable in a vertical direction in freely movable in a parallel direction and connecting links and an adjusting lever with a spring over the stage. CONSTITUTION:The subject supporting arm is installed in an agricultural working truck supportable an agricultural working machine performing agricultural works such as sowing, transplanting or soil sterilization with vertically moving with hand operation in freely movable in vertical direction. In said supporting arm, a supporting stage 7 freely capable of hooking the agricultural working machine is supported at a top end of a pair of links 6 installed in the working truck 1 in freely rotatable in a vertical direction in freely movable in parallel direction and a spring 8 for forcing the supporting arm 5 to upward is expanded between two links 6 located in upper and under, then an end of the spring 8 is fixed on one of the links 6, thus the other end of the spring is connected to an adjusting lever 9 installed in the other link 6 to make possible to freely adjust tension.

Description

[Detailed Description of the Invention] <Field of Industrial Application> This invention mainly involves manual sowing,
The present invention relates to a support arm in an agricultural work trolley that can vertically moveably support an agricultural work machine that performs agricultural work such as transplanting or soil disinfection.

<Object of the invention> This invention is disclosed in Japanese Patent Application No. 21137 filed by the present applicant.
No. 84 "Relates to a support arm provided on an agricultural work trolley J so as to be movable up and down, and more specifically relates to a support arm in an agricultural work trolley in which the tension of a spring provided to bias the arm upward can be freely adjusted.

<Means for Achieving the Purpose> The present invention provides a method for making it possible to move up and down an agricultural machine hung on a support stand at the tip of a support arm very easily.
It is an object of the present invention to provide a support arm for an agricultural work trolley in which the biasing force of the support arm can be arbitrarily adjusted.

That is, the present invention has a support stand on which an agricultural working machine can be freely latched is supported so as to be movable in parallel at the ends of a pair of links provided on a work cart so as to be movable up and down, in which the support stand is
One end of a spring arranged to bias in the E direction is fixed to one side link, and the other end is attached to fl! ! The gist of this invention is a structure of a support arm in an agricultural work trolley, which is characterized in that it is connected to an adjustment lever provided on a side link so that the tension H can be adjusted freely.

According to the present invention, the upward bias of the arm can be easily adjusted according to the weight of any agricultural working machine hung on the support stand at the tip of the supporting arm. It is now possible to move the work machine up and down extremely easily.

<Embodiment> To explain the present invention with reference to an illustrated embodiment, (1) is a work trolley, which is supported by front wheels (21 and rear wheels G) so as to be freely movable, and supported by pillar 4 so as to be movable up and down. Arm (5
1 is provided. The support arm (6) is composed of a plurality of links (6) arranged vertically in parallel, and a support stand opening on which an agricultural work fi (not shown) can be hung is supported at the tip so that it can move freely in parallel. Two links located above and below f6]
A spring U for biasing the support arm +51 upward is stretched between f6+.

The base of the spring 6 is fixed to the lower link (6), and the tip is linked to an adjustment lever (9) provided on the upper link (6). The adjustment lever (9) is used to freely adjust the tension of the spring U, and is attached to the handle (1).
When the support arm (5) is rotated forward, the spring 8 becomes tensed and the bias of the support arm (5) increases, and when the support arm (5) is rotated backward, the tension is loosened and the bias decreases.

The handle α0 of the adjustment lever (9) is in the guide groove O of the guide plate 01)
The guide groove 02 is provided with an appropriate number of locking hooks on which the handle O1 can be freely engaged.

Since this invention is configured as described above, the handle αa
The biasing force of the support arm (5) can be freely adjusted by hooking the support arm (5) to the guide groove θ and the appropriate locking hook 0. Now you can move it up and down extremely easily.

<Effects of the Invention> As described above, according to the present invention, since the biasing force of the support arm can be easily adjusted, it is possible to move up and down the agricultural working machine hooked to the support stand at the tip of the support arm very easily. We have achieved the desired effect.

[Brief explanation of the drawing]

The figures show examples of the present invention, in which Fig. 1 is a side view of the agricultural work cart, No. 21:jJ is a plan view thereof, Fig. 3 is a side view of the support arm, and Fig. 4 is a plan view thereof. be. The symbols in the figure are explained as follows. (1) is the work trolley (2) is the front wheel B) is the rear wheel
(2) is the support column (5) is the support arm (6) is the link rod is the support stand
The spring (9) is the adjustment lever. The handle (11) is the guide [a] is the guide groove.

Claims (1)

[Claims] At the ends of a pair of links that are movable up and down on the work cart,
In a device that supports a support stand that can be freely latched to an agricultural working machine so as to be able to move in parallel, one end of a spring arranged to bias the support stand upward is fixed to one link, and the other end is fixed to the other link. A support arm for an agricultural work trolley, characterized in that it is connected to an adjustment lever provided on a side link, and the tension can be adjusted freely.