JPS6116191Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a hitch that attaches and detaches the engine to the front part of the machine body, which is equipped with a single axle wheel at the bottom, and is attached to and detaches from the work machine at the rear part.
Furthermore, the present invention relates to an agricultural vehicle which is provided with a control handle facing rearward and upward, and is provided with a grounding stand which can be freely raised and lowered in the front of the machine body, and in which the rear end of a luffing operation tool whose tip is connected to the ground stand is located near the control handle.

In the agricultural vehicle mentioned above, when attaching or detaching the implement, it is necessary to change the stand between the operating position and the retracted position to prevent the vehicle body from tipping over and to ensure safety during driving. When connecting, we focused on the fact that the two are in the closest relative position at the hitch, and that the operating tool of the stand also passes near this hitch, and that we changed the posture of this stud to connect and disconnect the work equipment. The purpose is to provide a simple structure that allows for interlocking operations.

In this invention, an arm is provided near the hitch, the middle part of which is pivotally supported on a horizontal support shaft, and the upper end of this arm is engaged and connected to the middle of the luffing operation tool, and the lower end is used to connect the work equipment to the hitch. The present invention is characterized in that a contact portion is integrally provided which contacts the working machine portion and swings the upper end of the arm rearward, and the upper end of the arm is always urged to swing forward.

In other words, the position of the stand automatically changes as the work equipment is attached or removed, such as to the stored position when the work equipment is attached, and to the operating position when the work equipment is removed, so there is no need to operate the stand when attaching or removing the work equipment. However, in the present invention, the structure for this purpose is to have a horizontal support shaft and an arm pivoted in the middle on the horizontal support shaft, the lower end of which is oscillated forward, and the upper end of which is operated as a stand. By adopting a means of engagement and connection in the middle of the tool, the structure itself is extremely simple, compact and not bulky, and can be easily attached to existing agricultural vehicles, with almost no specifications of conventional agricultural vehicles. It has the advantage of being able to be installed without any modification.

EMBODIMENT OF THE INVENTION Below, the Example of the agricultural vehicle of this invention is demonstrated based on drawing.

A pair of left and right drive wheels 4, 4 are mounted on a machine frame 2 with an engine 1 mounted in the front via a transmission case 3, and a control handle 5 is extended rearward from the top of the transmission case 3. A hitch 7 that constitutes the vehicle body and serves as a connecting portion 7 for attaching and detaching a working machine 6 such as a transport vehicle is attached to the rear of the vehicle body.

When the transport vehicle 6 is parked without being connected, the machine frame 2 is moved around the wheels 4, 4 due to the vehicle weight.
A grounding stand 8 is attached to the machine frame 2 to prevent the vehicle body from falling into an overturned position with the front end side descending and touching the ground.
It is located at the front of the The grounding stand 8 is connected to the machine frame 2 via a horizontal shaft 9 so that it can be changed between a storage position in which the ground side is drawn toward the machine frame 2 and a usage position in which the ground side is lowered from the machine frame 2. It is pivotally supported. A stopper 10 is attached to the machine frame 2 to prevent the stand 8 from rotating forward due to the weight of the vehicle when the stand is in use.

A mechanism 11 for automatically changing the posture of the stand 8 in conjunction with the attachment and detachment of the carrier vehicle 6 to and from the hitch 7 is constructed as shown in FIG. The aim is to eliminate the need for

That is, an arm 12 that is swingable around the horizontal support shaft _P1 is provided near the hitch 7, and a portion 12a that is brought into contact with the projecting piece 14 from the transport vehicle connection member 13 for the hitch 7 is connected to the swinging arm 12. The other free end of the swing arm 12 is connected to the stand 8 via a rod 15. A spring 16 is tensioned across the vehicle body portion and the swinging arm 12 to bias the stand 8 to the operating position and to bias the arm 12 to swing in a direction in which the abutting portion 12a thereof is positioned toward the rear of the vehicle body. It has been set up. That is, the state in which the transport vehicle connecting member 13 is fitted into the hitch 7, that is, the transport vehicle 6
When it is attached to a work vehicle, as shown in FIG. The stand 8 is slid to the side so that it is in the retracted position. Then, the state in which the transport vehicle connecting member 13 is removed from the hitch 7, that is, the transport vehicle 6
When removed from the work vehicle, as shown in FIG.
When the rod 15 is released from contact with the rod 15, the spring 16 slides the rod 15 toward the front of the vehicle;
The stand 8 is then placed in the use position.

Further, the rod 15 is extended below the handle 5, and a stand operating section 1 is provided at the end of the rod 15.
Even when the transport vehicle 6 is removed and the stand 8 is attached, if the operating section 17 is pulled toward the rear of the vehicle body against the biasing force of the spring 16, the stand 8
It is designed so that it can be operated into the retracted position.

Furthermore, as shown in FIG. 4, the operating section 17 is configured to be rotatable around the axis _P2 of the rod 15, and a protrusion ₁₈ is provided on the operating section 17. A fixing piece 19 is provided on the vehicle body to allow the protrusion 18 to be engaged and disengaged by rotating the operating section 17. When the protrusion 18 is engaged with the fixing piece 19 while the operation part 17 is pulled, the spring 16 can prevent the rod 15 from being pulled back, even when the transport vehicle 6 is removed. , the stand 8 can be maintained in the retracted position.

[Brief explanation of the drawing]

The drawings show an embodiment of the agricultural vehicle according to the present invention,
Figure 1 is an overall side view with the work equipment removed.
Figures 2 and 3 show the stand posture changing mechanism,
FIG. 2 is a diagram showing the working machine removed, FIG. 3 is a diagram showing the working machine installed, and FIG. 4 is a perspective view of the stand operating section. DESCRIPTION OF SYMBOLS 1...Engine, 4...Wheel, 5...Control handle, 6...Work machine, 7...Connection part, 8...Stand, 11...Attitude change mechanism, 12...Arm,
12a...Abutment part, _P1 ...Horizontal support shaft.

Claims (1)

[Claims for Utility Model Registration] A hitch 7 in which an engine 1 is attached to the front of a machine body equipped with a single-axle wheel 4 at the bottom and a work implement 6 is attached to and detached from the rear.
is further provided with a control handle 5 facing rearward and upward, and is provided with a grounding stand 8 that can be raised freely at the lower front of the fuselage, and the rear end of a luffing operation tool 15 whose tip is connected to this is placed near the control handle 5. In the agricultural vehicle, an arm 12 is provided near the hitch 7, the middle part of which is pivotally supported on the horizontal support shaft _P1 , and the upper end of this arm 12 is engaged and connected to the middle of the up-and-down operation tool 15, and the lower end of the arm 12 is In addition, a contact portion 12a is integrally provided, which contacts the work equipment part when connecting the work equipment 6 to the hitch 7 and swings the upper end of the arm 12 backward, and furthermore, the upper end of the arm 12 is always kept forward. An agricultural vehicle characterized by being energized to swing. The agricultural vehicle according to claim 1, wherein the stand 8 is configured to be able to be maintained in a retracted position when the work implement is removed from the hitch 7.