JPS6238486Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a connection device for a ground leveling plate attached to a tillage rotary or the like.

Conventionally, there is a tillage rotary in which a ground leveling plate extending to the rear can be separated into upper and lower sections depending on the type of work. The upper and lower ground leveling plates are connected by seven to eight bolts, but it is extremely troublesome to attach and detach them. Furthermore, the angle at which the lower leveling plate is attached to the upper leveling plate cannot be changed. Furthermore, when adjusting the distance of the lower leveling plate to the ground by changing the amount of overlap between the upper leveling plate and the lower leveling plate, the heavy leveling plate must be supported from below while tightening many bolts, which requires labor. It has drawbacks.

This idea was devised in view of these points, and it makes it easier to attach and detach the lower leveling plate.
It is an object of the present invention to provide a connection device for a lower leveling plate that can easily adjust the mounting position of the lower leveling plate and rotate the lower leveling plate according to the mounting position.

This idea involves attaching brackets to both sides of the upper leveling plate, placing the placed part on the lower leveling plate on the holding parts provided on these brackets, and using a stopper to prevent the placed part from floating upward. Therefore, the lower leveling plate can be easily attached and detached without using tools by simply attaching and detaching the pair of left and right stoppers, and the distance to the ground of the lower leveling plate can be reduced by changing the mounting position of the bracket. The structure is such that the lower leveling plate can be easily adjusted and rotated depending on the distance from the ground.

An embodiment of this invention will be described based on the drawings. Reference numeral 1 denotes the body of a tractor, although only a rear part thereof is shown, and a tilling rotary 2 is connected to this body 1. The tillage rotary 2 has an upper ground leveling plate 3 and a lower ground leveling plate 4 which extend rearward and downward and are supported so as to be movable up and down. The upper leveling plate 3 has reinforcing members 5 on both sides, and these reinforcing members 5 are formed with a plurality of screw holes 6 and a plurality of circular holes 7 arranged vertically. A pair of brackets 8 attached to both sides of the upper leveling plate 3 have a mounting hole 9 opposite to the screw hole 6, a protrusion 10 that engages with the circular hole 7, and a U-shaped upper opening that serves as a holding portion. A groove 11 and a rearward facing pin support part 12 are formed, and further, from this pin support part 12 the groove 11 is formed.
A retaining pin 13, which is a stopper that reaches the top of the housing, is slidably inserted while being biased forward by a spring 14. The rear part of the retaining pin 13 is bent into a J shape, and the bent end face 15
is for maintaining the retaining pin 13 in a retracted state when it comes into contact with the pin support portion 12. These brackets 8 are fixed to the upper leveling plate 3 by engaging the circular holes 7 and the projections 10 and screwing the bolts 16 passed through the mounting holes 9 into the screw holes 6. ing. Further, pins 17 are provided on both sides of the lower leveling plate 4, and these pins 17 are supported by the grooves 11 from below and are held rotatably about left and right axes. , and upward movement is prevented by the retaining pin 13. Further, the upper leveling plate 3 and the lower leveling plate 4 are connected by a connecting rod 18.

In this configuration, the connecting rod 18 is removed, the retaining pin 13 is pulled rearward as shown in FIG. By opening the upper part of the groove 11 in this manner, the lower leveling plate 4 can be easily removed. Further, when lowering the mounting position of the lower leveling plate 4, remove the bolts 16 and lower the mounting position of the bracket 8 downward. That is,
The protrusion 10 is engaged with the lower circular hole 7 and the lower screw hole 6 is inserted.
Screw together the bolt 16 passed through the bracket 8.
Next, the pin 17 of the lower leveling plate 4 is placed in the groove 11, and the retaining pin 13 is turned 90 degrees to remove the end face 15 from the pin support portion 12. As a result, the retaining pin 13 slides under the force of the spring 14, as shown in FIG. 8b, and prevents the pin 17 from moving upward.
Further, the upper leveling plate 3 and the lower leveling plate 4 are connected by the connecting rod 18, but the mounting position of the connecting rod 18 is also lowered by lowering the support hole 19 as shown in FIG. 6 by lowering the mounting position of the bracket 8. and connect it to the upper leveling plate 3. In this way, the distance of the lower ground leveling plate 4 from the ground changes, and the lower leveling plate 4 can rotate around the pin 17 accordingly.

In addition, a pin is made to protrude from the bracket 8 as a holding part, an inverted U-shaped groove is formed in the lower leveling plate 4 as a receiving part, and this groove is supported by a pin from below.
The retaining pin may be inserted perpendicularly to the groove and opposed to the lower side of the pin to prevent the lower leveling plate from floating upwardly with respect to the pin together with the groove.

Since this device is constructed as described above, the placed parts provided on both sides of the lower leveling plate are supported from below by the holding parts of the brackets fixed to both sides of the upper leveling plate, and the placed parts are The stopper prevents the lower leveling plate from floating, and the lower leveling plate can be attached and detached by attaching and detaching the stopper.
By changing the mounting position of the bracket, the distance of the lower leveling plate to the ground can be easily adjusted, and the lower leveling plate can be rotated according to the distance to the ground.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a side view, Figure 2 is a perspective view, Figures 3 and 4 are partially enlarged exploded perspective views showing changes in the mounting position of the bracket and the state of attachment of the lower leveling plate to the bracket, and Figure 5. and Fig. 6 is an enlarged vertical side view showing how the lower leveling plate is connected to the upper leveling plate, and Fig. 7 is a further enlarged view of the right side of the upper leveling plate with a part cut away to show how the bracket is attached. The rear view and FIG. 8 are side views further enlarged and partially cut away to show the operation of attaching and detaching the pins of the lower leveling plate to the bracket. 3... Upper leveling plate, 4... Lower leveling plate, 8...
Bracket, 11... groove (holding part), 13... retaining pin (stopper), 17... pin (placed part).

Claims (1)

[Scope of utility model registration request] Brackets that can be attached to both sides of the upper leveling plate so as to be vertically adjustable are provided, and these brackets support the placed parts provided on both sides of the lower leveling plate from below, so that the lower part can be adjusted around these placed parts. Holding parts are formed to rotatably hold the ground leveling plate, and stoppers are provided to prevent upward movement of the mounted part of the lower leveling plate held by these holding parts, and the upper leveling plate and the A connecting device for a ground leveling plate, characterized in that the lower leveling plate is connected to the lower leveling plate by a connecting rod whose mounting position can be freely adjusted.