JPH0789611A - Attachment removing device for conveyer belt - Google Patents

Abstract

PURPOSE:To hold a scraper chip stably for a long period while following up abrasion loss in the cross direction of a conveyer belt and dispense with any adjusting work. CONSTITUTION:Scraper chip 11 divided into a plurality of pieces opposite to the cross direction of the carrying surface 21 of a conveyer belt 2 is supported elastically and displaceably and attachments 22 of carried matter etc., attached to the carrying surface 21 of the conveyer belt 2 are removed. An attachment removing device is provided with a fixed supporting shaft 5 arranged by being extended in the width direction of the conveyer belt 2, a plurality of scraper arms 6 capable of oscillating separately from each other, a scraper chip 11 attached to the tip of the other end part 64 of the scraper arm 6 and an elastic displacement causing pressure push-pressing mechanism 7 arranged between the rear face of a supporting arm 36 and the top face of one end part 63 of the scraper arm 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing deposits on a conveyor belt, which removes deposits such as transported articles adhering to the transport surface of the conveyor belt.

[0002]

2. Description of the Related Art A conveyor belt is not only a cause of belt meandering and damage, but also falls over the entire length of the conveyor belt as the material adheres to the conveying surface and is caught on the return side and adheres to the return rollers. However, a great deal of labor is required for the processing work.

Therefore, it is necessary to automatically remove the deposits on the conveyor belt.

Conventionally, as an adhering material removing device for adhering material such as an adhering material adhered to a conveyor belt conveying surface, a scraper chip (scraping blade) is pressed against the belt conveying surface to scrape off the adhering material.

Since the conveyor belt is worn during conveyance, the scraper chips are divided into a plurality of pieces in the width direction of the belt conveying surface in order to press the scraper chips tightly against the belt conveying surface according to the abrasion amount. It has a mechanism of pressing with an elastic material such as.

For example, scraper chips are divided into a plurality of pieces in the width direction of a conveyor belt, and are supported by a support shaft through a rubber (Japanese Utility Model Publication No. 60-85522). The same mechanism is used in other cases, such as Japanese Utility Model Publication No. 61-52619 (Figs. 15 and 16), Japanese Utility Model Publication No. 61-132313, Japanese Utility Model Publication No. 62-171519, and Japanese Utility Model Publication No. 57-51219.
Japanese Patent Laid-Open No. 62-215416, Japanese Utility Model Publication No. 1-
It is proposed in Japanese Patent No. 174323.

Further, as a means for utilizing elasticity of a spring for a pressing mechanism, Japanese Utility Model Publication No. 61-122221 and Japanese Utility Model Publication No.
Japanese Patent Application Laid-Open No. 4-1415 / 1992 discloses a hollow elastic body instead of a spring.
No. 82212 is disclosed.

However, in the pressing mechanism using the elasticity of rubber or spring, when the abrasion of the belt progresses and the amount of displacement of the elastic body of rubber or spring increases, the pressing force of the scraper tip on the belt becomes weak. However, a residue of scraping off the adhered matter occurs. On the contrary, if the initial elastic force is increased according to the maximum amount of wear of the belt, the pressing force on the belt is increased and the belt is damaged.

Generally, the central portion of the conveyor belt in the width direction is more worn than the left and right side edge portions. Therefore, it is not possible to obtain a uniform pressing force in the belt width direction with the above-mentioned pressing mechanism using rubber or spring, and the worker regularly inspects it.
The pressing force of each scraper chip had to be adjusted by adjusting bolts based on experience and intuition.
Since the working environment is bad in a conveying line involving dust, an adhering matter removing device that does not require adjustment work is required.

A device has also been proposed in which a piston supporting a scraper chip is erected vertically to a belt conveying surface and a lower end of the piston is supported by a hollow elastic body (Japanese Patent Laid-Open No. 18221/1992).
No. 2). This device can follow the change in the amount of wear in the belt width direction, but when the scraper tip gets caught on the belt seam or the damaged part of the belt, it cannot absorb the impact and the belt or adhered matter removing device May be damaged.

[0011]

SUMMARY OF THE INVENTION The present invention provides an adhering matter removing device which can stably hold scraper chips for a long period of time by following the amount of abrasion in the width direction of a conveyor belt, and does not require adjustment work during that period. Especially.

[0012]

SUMMARY OF THE INVENTION An apparatus for removing deposits on a conveyor belt according to the present invention supports elastically displaceable scraper chips which are divided into a plurality of parts facing each other in the width direction of a convey surface on the return side of the conveyor belt. A device for removing adhering substances such as conveyed substances adhering to the conveying surface of the conveyor belt, wherein a fixed support shaft extending in the width direction of the conveyor belt and a central portion of the fixed supporting shaft. A balance weight pedestal is provided on one end of the shaft, which is swingably mounted, and extends in the belt advancing direction. A pair of support arms is provided at the other end of the balance weight pedestal, which extends in the opposite direction to the belt advancing direction. The bracket provided, the balance weight attached to the balance weight cradle of the bracket, and the central portion are swingably supported between the tips of the support arms and extend in the belt traveling direction. A plurality of scraper arms that have end portions and the other end portion that extends in the direction opposite to the belt traveling direction and that extends toward the belt transport surface and that can swing independently of each other, and that are attached to the tips of the other end portions of the scraper arms. Scraper tip, and by means of an elastic displacement imparting pressing mechanism arranged between the back surface of the support arm and the upper surface of one end of the scraper arm,
The above problems are solved.

[0013]

In the device of the present invention, the weights of the bracket and the scraper arm are substantially balanced by the balance weight with the fixed support shaft as the fulcrum. A plurality of scraper arms are independently supported by the support arm of the bracket, and the elastic displacement imparting and pressing mechanism independently and independently presses the scraper chips against the belt conveying surface.

In the normal state, since the pressing mechanism uses a pressurized fluid such as air or liquid, the pressure is evenly distributed,
When the belt is worn, pressure is added to the scraper chips where the pressing force is reduced, and eventually the entire scraper chips are evenly pressed. Therefore, it is not necessary to adjust the pressing force of each scraper chip.

When a hard object such as a seam of a belt passes, the strong impact force acting on the scraper tip is buffered by the movement of the balance weight on the bracket.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the apparatus for removing deposits on a conveyor belt according to the present invention will be described with reference to the drawings.

1-5 show an embodiment of the apparatus of the present invention. As shown in FIGS. 1 and 2, the apparatus of the present invention supports the scraper chips 11 arranged in a plurality of divisions facing each other in the width direction of the conveyor surface 21 of the conveyor belt 2 so as to be elastically displaceable, and The attached matter 22 such as the conveyed matter adhered to the conveying surface 21 is removed.

The apparatus of the present invention, as shown in FIGS.
Bracket 3, balance weight 4, fixed support shaft 5,
It is composed of a scraper arm 6, a scraper tip 11, and an elastic displacement imparting pressing mechanism 7.

As best shown in FIG. 4, the fixed support shaft 5 is fixed to a machine frame (not shown) by extending in the width direction of the conveyor belt 2 between the forward side and the return side of the conveyor belt 2. .

As shown in FIGS. 1, 2 and 4, the bracket 3 has a central portion 31 rotatably attached to a fixed support shaft 5 via a bearing 32, and an end portion 33 extending in the belt traveling direction 23. A balance weight cradle 34 is provided, and a pair of spaced support arms 36 is provided at the other end portion 35 extending in the direction opposite to the belt traveling direction.

A support shaft 37 is fixed between the tips of the support arms 36, and a support plate 38 is fixed in the middle thereof.

The balance weight 4 is removably mounted on the balance weight pedestal 34 of the bracket 3. The balance weight 4 is appropriately selected according to the weights of the bracket 3, the scraper arm 6, and the scraper tip 11.

As best shown in FIGS. 1, 2 and 5, the scraper arm 6 is pivoted on a support shaft 37 whose center portion 61 covers a bearing 62 and is fixed between the tips of the support arms 36. It has one end 63 that is freely supported and that extends in the traveling direction 23 with the bell, and the other end 64 that extends in the direction opposite to the belt traveling direction and extends toward the belt conveying surface 21.

The scraper arm 6 is divided into a plurality of pieces (8 pieces in the illustrated example) in the width direction of the conveyor belt 2, and is independently supported by the support shaft 37 independently of each other.

The scraper chip 11 is used for each scraper.
It is fixed to the tip of the other end 64 of the arm 6 by a bolt or the like so as to be convertible.

The elastic displacement imparting pressing mechanism 7 is shown in FIGS.
As best shown in FIG.
2. Manifold 73 and actuator 74. The manifold 73 is fixed to the front side of the support plate 38 of the bracket 3. The actuator 74 is mounted between the back side of the support plate 38 and the one end 63 of the scraper arm 6.

The pressurized fluid (for example, air, water, etc.) is supplied to the actuator 74 through the pressurized fluid supply pipe 71, the opening / closing valve 72, and the manifold 73. Although the manifold 73 is common to each scraper arm 6, the actuator 74 is preferably provided for each scraper arm 6.

FIG. 3 shows an embodiment of various actuators 74 in the elastic displacement imparting pressing mechanism 7. The figure (A) shows a fluid pressure cylinder, the figure (B) shows a bellows, and the figure (C) shows an integrally continuous tube. In the case of a tube, the scraper arms can be commonly used.

In the device of the present invention, the bracket 3,
Scraper tip 11 and scraper arm 6
Is substantially balanced by the balance weight 4 with the fixed support shaft 5 as a fulcrum. A plurality of scraper arms 6 are independently supported by the support arm 36 of the bracket 3, and the elastic displacement imparting and pressing mechanism 7 independently elastically displaces the scraper chips 11 on the transport surface 21 of the belt 2. Press on.

As shown in FIG. 4A, in the normal state,
Since the pressing mechanism 7 uses a pressurized fluid such as air or liquid, the pressure is evenly distributed, and the pressure is added to the scraper chip 11 in the portion where the pressing force is reduced when the belt 2 is worn, Finally the entire scraper chip 11
The uniform pressing force is applied to. Therefore, it is not necessary to adjust the pressing force of each scraper chip. Therefore, the adhered substances are removed efficiently.

As shown in FIG. 4B, when a hard object 24 such as the seam of the belt 2 passes through, a scraper
The strong impact force acting on the tip 11 is buffered by the movement of the balance weight 4 on the bracket. This prevents damage to the scraper chip 11 and cutting / damage of the conveyor belt.

[0032]

According to the present invention, since a plurality of scraper units can independently swing on the support shaft and the pressing force of each scraper chip can be constantly kept constant, the conveyor belt is worn. It is possible to perform stable removal of deposits on the belt without requiring maintenance and inspection for a long period of time. Moreover, when a hard object such as a seam of the conveyor belt passes, the balance weight absorbs a strong impact force, so that the scraper chip and the conveyor belt can be prevented from being damaged or cut.

[Brief description of drawings]

FIG. 1 is a perspective view of a device for removing deposits on a conveyor belt according to the present invention as viewed from the front side.

FIG. 2 is a perspective view of the device of FIG. 1 viewed from the back side.

FIG. 3 is a side view showing various embodiments of an elastic displacement imparting pressing mechanism.

FIG. 4 is an operation explanatory diagram of the device of the present invention.

5 is a cross-sectional view taken along the line VV of FIG. 4 (A).

[Explanation of symbols]

 2 Conveyor belt 3 Bracket 4 Balance weight 5 Fixed support shaft 6 Scraper arm 7 Elastic displacement applying pressing mechanism 11 Scraper chip 74 Actuator

Claims (1)

[Claims] 1. A scraper chip, which is divided into a plurality of parts facing each other in the width direction of the return-side transfer surface of a conveyor belt, is elastically displaceably supported so as to attach a transfer object attached to the transfer surface of the conveyor belt. In a device for removing a kimono, a fixed support shaft extending in the width direction of the conveyor belt, and a central portion swingably attached to the fixed support shaft, and a balance at one end extending in the belt traveling direction. A bracket provided with a weight cradle and a pair of support arms spaced apart at the other end extending in the direction opposite to the belt advancing direction, and a balance weight attached to the balance weight cradle of the bracket A center portion of which is swingably supported between the tip ends of the support arms and which extends in the belt traveling direction and faces the belt conveying surface in a direction opposite to the belt traveling direction. A plurality of scraper arms that have the other ends that extend once and can swing independently of each other, a scraper tip attached to the tip of the other end of the scraper arms, and a back surface of the support arm with the scraper An adhered matter removing device for a conveyor belt, comprising: an elastic displacement imparting pressing mechanism disposed between the one end of the arm and the upper surface.