JPH0452270Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a wiper device for an automatic dust remover in which reverse operation is automatically performed using a simple wiper structure.

[Conventional technology and its problems]

When performing reverse operation on an intermittent dust remover with a rake arm attached to an endless chain, the rake arm must be returned to the specified position on the dust remover and the wiper arm must be swung to move the wiper out of the rake path. It was locked to the dust remover body, and the reverse limit switch was turned on at the same time. In other words, to prevent the rake arm from colliding with the wiper and damaging it, the wiper is moved out of the path of the rake, and the limit switch is used to confirm the reverse operation. For this reason, the wiper device becomes complicated and must be operated by a field worker every time the wiper device is operated in reverse, which has the disadvantage of increasing the amount of work.

[Means for solving problems]

When the rake installed at the tip of the rake arm is operated in reverse, the wiper body is equipped with a rake guide that is located on the downward trajectory of the tip of the rake and contacts the tip of the rake to swing the wiper, allowing automatic operation with a simple device. made possible.

〔Example〕

The present invention will be explained below based on embodiments shown in the drawings.

In the figure, 1 is a dust remover, and a chain 3 is stretched over this dust remover 1. This chain 3 is suspended endlessly between a sprocket foil 2 on the top of the pond and a sprocket foil (not shown) on the bottom of the pond.

The upper end of a rake arm 4 is attached to the chain 3, and a foil guided by a guide of the dust remover body is attached to the middle part of the rake arm 4.
Through the operation of this guide (not shown) and sprocket wheel, the rake 5 attached to the tip of the rake arm 4 scrapes up the sieve residue caught on the screen when the rake arm 4 rises, and separates it from the screen when the rake arm 4 descends. Do what you want. The rake arm 4 is structured so that it separates from the screen when an overload occurs on the rake at the link. It is possible to adopt other similar structures for the rake arm structure.

Next, the wiper device is provided with a wiper rubber 11 for scraping the sieve residue on the rake 5, and a rake guide 12 above the wiper rubber 11 for guiding the rake along the downward locus of the tip of the rake during reverse operation. This rake guide has a structure that allows the rake to be guided even when the sprocket wheel 2 is taken up.

Further, the wiper rubber 11 and the rake guide 12 are supported by the wiper body 10, and the wiper body 10 is swingably provided on the wiper arm 6.
Furthermore, the wiper arm 6 is swingably mounted on a bearing 7 provided on the dust remover body, and a weight 8 is provided at the other end of the wiper arm 6 to balance the positional relationship between the rake and the wiper guide. ing. Further, a stopper 9 is fixed to the wiper arm 6 in order to restrict the swinging of the wiper body 10.

With the above-described configuration, when Ikegami's sprocket wheel 2 is driven during forward rotation, the rake arm 4 and rake 5 attached to the chain 3 scrape up the sieve residue adhering to the screen, rise, and move the wiper rubber 11 to the desired position. Contact inside the rake. When the wiper body rises further, the wiper body is pushed up by the rake, and the wiper rubber 11 slides inside the rake to remove the sieve residue on the rake. At that time, the rake tip follows the rake tip trajectory 13, and the wiper rubber 1
1. Move away from the rake guide 12. Then, the rake 5 descends while being separated from the screen, and as it rises from the bottom of the pond, it engages with the screen and scrapes up the sieve residue on the screen again, and this process is repeated.

During reverse operation, the wiper body is pushed up by the tip of the rake 5 by the rake guide attached to the wiper body regardless of the position of the rake 5, and the wiper can be operated without colliding with the wiper.

That is, regardless of the position of the rake, the tip of the rake 5 contacts the rake guide 12, swings the wiper body, and pushes the wiper body out of the trajectory of the rake and descends. When the rake further separates from the wiper rubber 11, the wiper body returns to a predetermined position as the wiper arm swings. If the reverse operation is continued, this will be repeated one after another.

This predetermined position of the wiper body is determined by pushing up the wiper body by the rake 5 during forward rotation and swinging the wiper body.
This is the position where the tip of the rake 5 contacts the rake guide during reverse operation and pushes the wiper body out of the rake trajectory.

[Effect of idea]

According to this invention, during reverse operation, a rake guide that guides the rake along the descending trajectory of the rake is attached to the wiper body, and the wiper is swung by the rake so that it can be lowered, so the rake is temporarily stopped at a fixed position by hand. This is an excellent idea that eliminates the series of operations to lock the wiper arm and turn on the limit switch for reversal detection, allowing automatic operation with a simple device.

[Brief explanation of the drawing]

FIG. 1 is a front view of the present invention, FIG. 2 is a side view, and FIG. 3 is a conventional example. 1 is a dust remover, 2 is Ikegami's sprocket foil,
3 is chain, 4 is rake arm, 5 is rake, 6
is the wiper arm, 7 is the bearing, 8 is the weight, 9
is the stopper, 10 is the wiper body, 11 is the wiper rubber, and 12 is the rake guide.

Claims (1)

[Scope of utility model registration request] In a wiper device of an automatic dust removing machine, a rake arm having a rake at the tip is attached to an endless chain, and the rake intermittently scrapes up sieve residue on a screen to remove the sieve residue on the rake, A wiper device for an automatic dust remover, characterized in that a wiper body is provided with a rake guide that is located on the downward trajectory of the tip of the rake and contacts the tip of the rake to swing the wiper during reverse operation.