JPS591482Y2 - Discharge tube opening/closing device in grain hopper - Google Patents

Description

[Detailed description of the invention] Conventionally, the opening/closing plate of a grain hopper is connected to the machine body from the outside by a spring, and therefore requires a large space.

The object of the present invention is to accommodate a spring between the inside of the opening/closing plate and the discharge pipe, thereby making the spring compact and ensuring reliable opening/closing.

To explain the embodiment shown in the drawings, 1 is an opening/closing plate;
The upright left and right side walls 2 are inserted into and removed from the discharge tube 3 of the grain hopper, and one end of the spring S is fixed to the left and right sides of the outer surface, and the other end is fixed to the upright piece 4 on the opening/closing plate 1, and the opening/closing plate is discharged. Forces the tube in the direction of closing.

Reference numeral 5 denotes guide rods installed on the left and right sides of the opening/closing plate, and a spring S is wound around each guide rod.

Reference numeral 6 designates an elastic end wall made of rubber or the like facing the upright piece 4 on the opening/closing plate, and 7 designates a grain passage hole bored in the opening/closing plate 1.

Although the upright piece 4 is provided at the end of the opening/closing plate in the embodiment shown in the drawings, it may be provided in the middle.

Therefore, the hook piece 9 is attached to the U-shaped protrusion 8 that is attached to the outer surface of the discharge pipe 3.
The middle part of the holder is pivoted and removably engaged with a stopper hole 10 formed in the upright piece 4.

Note that the structure of the fastener using the hook piece 9 and the fastening hole 10 is not limited to this structure.

In the present invention, the left and right sides of the upright piece 4 of the opening/closing plate 1 and the discharge pipe 3 are
When the elastic end wall 6 is pulled against the spring S installed between the hook piece 9 and the stopper hole 10 is engaged and fixed, a grain passage hole 7 formed in the opening/closing plate appears in the discharge tube 3 and the discharge tube is closed. Keep it open and do not close it abruptly.

When the hook 9 is operated and separated from the stopper hole 10, the opening/closing plate 1 is slid by the elastic force of the left and right springs S, and the passage hole 7 is pulled out to the outside of the discharge tube, thereby closing the discharge tube.

At this time, although the end wall 6 comes into contact with the discharge tube 3, its elasticity cushions the impact.

In this way, in the present invention, the spring S that biases the opening/closing plate is installed between the upright piece 4 on the opening/closing plate and the discharge pipe 3, so it is much more compact than a case where the spring is attached to the outside of the opening/closing plate 1. Moreover, when the stopper consisting of the hook piece 9 and the stopper hole 10 is disengaged, the opening/closing plate is biased in the direction of closing by the spring S, so even if the discharge tube 3 is full of grains, the opening/closing plate is automatically closed. While separating grain groups, the discharge pipe 3 is closed lightly and rapidly, resulting in the effect of not discharging excess grains.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a longitudinal sectional front view. 1 is an opening/closing plate, 9 is a hook piece, 10 is a stop hole, 3 is a discharge tube, 4 is an upright piece, S is for spring.

Claims (1)

[Scope of utility model registration request] A spring is installed between the upright piece on the opening/closing plate that can be freely inserted into and removed from the discharge tube and the discharge tube to bias the opening/closing plate in the direction of closing the discharge tube, and to attach the spring to the opening/closing plate, which is inserted into and removed from the discharge tube. A discharge tube opening/closing device for a grain hopper, which is provided with a stopper that engages with the spring, and communicates the discharge tube with a grain passage hole formed in an opening/closing plate to maintain the discharge tube in an open state.