JPH0530016Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a scraping tip in a belt cleaner device for removing residual adhesion of conveyed materials such as coke adhering to the surface of a conveyor belt.

[Conventional technology]

Conventionally, belt cleaner devices have been used to remove residual deposits of conveyed objects attached to the surface of a conveyor belt from the return side of the belt, as shown in, for example, Japanese Utility Model Publication No. 52-28308 and Japanese Utility Model Publication No. 56-32414. The scraping tip used in this device consists of a plate-like piece in contact with the belt surface. Since this scraping tip is rubbed against the belt surface, it is made of cemented carbide or ceramics in consideration of wear resistance.In order to improve the scraping performance, the belt surface is scraped by the elastic mechanism of the belt cleaner device. is supported by.

[The problem that the idea aims to solve]

The scraping chips used in conventional belt cleaner devices pursue wear resistance and scraping performance without considering the protection of the belt, and the chips sometimes dig into the belt surface and damage the belt. be. In particular, when the belt surface has scratches, or when the belt surface has unevenness such as when the belt surface has been partially repaired with so-called patches, the unevenness due to the scratches or repair on the rotating belt. When the section passes through the scraping tip of the belt cleaner device, the tip can bite or dig into the uneven section, widening the flaws on the belt surface or pulling off the repaired patch, resulting in , resulting in a situation where the belt has to be discontinued.

Regarding this point, in the belt cleaner device of the above-mentioned Japanese Utility Model Publication No. 56-32414, the protruding direction of the tip with respect to the belt suspension pulley and the virtual center of rotation of the resilient mechanism for bringing the tip into elastic contact with the belt surface are determined. , are set in a specific relationship, so that when an abnormal load is applied to the chip, the chip easily separates from the belt surface, thereby preventing damage to the belt. However,
This belt cleaner device is constructed so that when an abnormal load is applied to the tip, the acting force of the abnormal load is applied in a direction in which the tip moves away from the belt surface via a resilient mechanism. The disadvantage is that the structure and mounting location of the device must meet specific conditions, which prevents widespread use.

[Means to solve the problem]

The present invention provides a scraping chip for a belt cleaner device that solves the above-mentioned problems.According to the chip of the present invention, by attaching it as is to a currently general-purpose belt cleaner device, the above-mentioned belt biting damage can be avoided. The shortcomings of are eliminated.

The tip of the present invention includes a contact portion that comes into contact with residual deposits on the belt surface, and a receiving portion that extends from the contact portion in opposition to the belt traveling direction and forms a gap with the belt surface. Therefore, conveyed materials such as coke remaining on the belt surface are not immediately scraped off by the chips and are once filled and bound between the receiving portion and the belt surface. Therefore, from now on, the filled deposits rub against the belt surface, and the filled deposits perform the same function as chips and scrape off the remaining deposits on the belt surface. Since the hardness is lower than that of the belt, it will not dig into the unevenness of the belt surface and cause damage.

In particular, according to the chip of the present invention, while performing self-cleaning as described above, the gaps are opened on both sides of the chip and are opened opposite to the direction of belt movement, so that it is possible to fill the gaps with adhesives. However, the binder is allowed to grow in a direction protruding from the opening. For this reason, the contact part is always kept in contact with the remaining deposits on the belt surface,
Guarantees scraping by the connecting part.

Further, according to the chip of the present invention, the entire contact portion and the receiving portion, or at least the contact portion, is formed of an elastic material. Therefore, even if the uneven portion of the belt surface acts as an abnormal load on the chip, the contact portion is prevented from being damaged by the uneven portion of the belt surface biting into it, as in the case of conventional carbide tips.

Further, according to the chip of the present invention, the receiving surface of the contact portion facing the belt traveling direction is inclined in the belt traveling direction as it approaches the belt surface with respect to a perpendicular surface that intersects the belt surface at right angles. It is considered to be a sloping surface. Therefore, when the uneven portion of the belt surface passes over the chips, the chips easily separate from the belt surface.

〔Example〕

An embodiment of the present invention will be described in detail below based on the drawings.

(Configuration of Belt Cleaner Device) In FIG. 1, only a portion of the conveyor belt 1 on the return side wound around the winding pulley 2 is shown. This "return side" is an endless belt that is wrapped around a driving pulley and a driven pulley and runs in circles.
This term refers to the forward side until the conveyed object is dropped, and refers to the part of the return process in which, after the conveyed object has fallen, it turns around at the wrapping part on the pulley 2 and travels backward in the opposite direction to the forward direction. do. Therefore, it includes the entire process from the position on the pulley immediately after passing the turning point to the start of forward movement.

The belt cleaner device includes a bracket 4 erected on a support 3 fixed to the side wall of a hopper or chute of the conveyor belt device on both sides of the belt, and a frame 6 attached to the bracket 4 via a bearing 5.
is supported. The frame 6 is therefore arranged transversely to the belt. The bearing 5 and the frame 6 are fixed and removably fixed by a fixing means 7 such as a set bolt. An adjustment lever 8 is protruded around the bearing 5, and an adjustment bolt 9 that can freely move forward and backward with respect to the adjustment lever 8 is attached to the support 3.
is screwed into. Mounting plates 10 are provided protruding from the circumferential surface of the frame 6, and a plurality of mounting plates 10 are arranged in the axial direction of the frame 6.

Each cleaner unit 11 is attached to each mounting plate 10, and the cleaner unit 11 is attached to each mounting plate 10.
a support plate 12 that is detachably attached to the support plate 12; a holding plate 14 that is connected to the support plate 12 via an elastic member 13 in the form of a thick rubber block; and a holding arm 15 that extends upward from the holding plate 14. A scraping tip 16 is provided at the upper end of the holding arm 15.

When the adjusting bolt 9 is screwed forward and the adjusting lever 8 is pressed, the frame 6 rotates and the scraping tip 1 of the cleaner unit 11 is rotated.
6 is elastically supported on the surface of the belt 1 via the elasticity of an elastic member 13.

(Structure of scraping tip) As shown in FIG. 2, the scraping tip 16 includes a contact portion 17 that contacts the belt surface, and a contact portion 17 that extends from the contact portion 17 in a direction opposite to the belt traveling direction F and that contacts the belt surface. It is formed into a substantially L-shaped cross section, with a receiving part 19 forming a gap 18 between the parts, and the whole is integrally molded from wear-resistant rubber such as urethane rubber.
As shown in FIGS. 1 and 2, the gap 18
are opened on both sides of the tip 16, and are opened facing the belt traveling direction F.

The contact portion 17 includes a receiving surface 20 that faces the belt traveling direction F, and the receiving surface 20 has a receiving surface 20 that faces the belt traveling direction F as it approaches the belt surface with respect to a perpendicular surface 21 that intersects the belt surface at right angles. It has a sloped surface.

The receiving portion 19 is fixed to the holding arm 15 by a mounting bolt 22. In the illustrated example, the mounting bolt 22 is attached to a sleeve 24 with a flange 23 on its head.
are screwed together and fixed by welding or the like, and with the sleeve 24 inserted into the mounting hole 25 formed in the receiving part 19, the flange 23 is overlapped with the inner surface of the receiving part 19, and the sleeve 24 is inserted through the mounting hole 25. A mounting bolt 22 is inserted into a mounting hole 26 of the holding arm 15, and a nut 27 is screwed onto the mounting bolt 22.

Therefore, after the conveyed materials such as coke remaining on the surface of the belt 1 are scraped off by the connecting portion 17, they do not fall immediately and are temporarily filled into the gap 18 between the receiving portion 19 and the belt surface. and bind together to form a solid substance 28. Therefore, from now on,
The solid material 28 rubs against the surface of the belt 1, and the fixed object 28 performs the same function as a chip to scrape off the remaining deposits on the belt surface, and the scraped residual deposits move in the direction of arrow D in FIG. fall along. That is, subsequent scraping is performed by the solid matter 28 formed by the residual deposit itself, so-called self-cleaning, but as the solid matter 28 grows, it protrudes from the opening of the gap 18, Since the subsequent scraped material is allowed to fall in the direction of the arrow D, the solid material 28 grows thicker between the receiving portion 19 and the belt surface, thereby causing the connecting portion 17 to retreat and separate from the remaining deposits on the belt surface. The contact portion 17 is always kept in contact with the remaining deposits on the belt surface, and the desired scraping action is maintained.

By the way, the solid material 28 has lower hardness and is more brittle than the carbide chips used in conventional belt cleaner devices, so even if the belt has surface scratches or irregularities due to repair based on patches, the solid material 28 28 will not bite into the uneven parts of the belt 1 and cause damage. This is because when the lid is closed and the solid object 28 gets caught in the uneven portion, the solid object 28 is deformed or destroyed and can easily pass through the uneven portion. At this time, the uneven portion of the belt 1 that has passed through the solid material 28 continues to contact the contact portion 17 of the chip 16 with the remaining deposits on the belt surface.
However, as mentioned above, if the tip 16 is made of wear-resistant rubber, at least the connecting portion 17 will be elastically deformed to allow passage through the uneven portion, thereby damaging the belt surface. This will be prevented. Furthermore, when the solid material 28 bound to the chip 16 is separated from the chip 16 due to this elastic deformation, the separated solid material 28 is easily dropped from the gap 18 through the openings on both sides of the chip 16. Thereafter, a new scraping action by the connecting portion 17 can be performed. Furthermore, as described above, if the receiving surface 20 of the connecting portion 17 is made to be an inclined surface, when the uneven portion of the belt surface hits the receiving surface 20, as the uneven portion advances, the receiving surface 20 becomes closer to the chip 16 and the belt. It functions as a guide to separate from the surface, and as a result, the tip 16 can be separated from the belt surface together with the holding arm 15 through the elasticity of the elastic member 13, and the tip 16 can be separated from the belt surface like a carbide tip such as a conventional cutter. This prevents the material from biting into the material and causing tearing.

In the present invention, when scraping off residual deposits on the belt surface with the tip 16, in addition to elastically supporting the connecting portion 17 on the belt surface through the elasticity of the elastic member 13 as described above, the elastic member 13 is compressed. The contact portion 17 may be brought into light contact with the belt surface without any pressure, or the contact portion 17 may be placed along the belt surface with a small gap. Even in such a case, as long as the connecting portion 17 comes into contact with the remaining deposits on the belt surface, the deposits will be peeled off from the belt surface, and the peeled off material will fill the gap 18 with solid matter 28.
can be generated and the self-cleaning described above can be performed.

[Effect of idea]

As a result of the configuration of the present invention as described above, the chip 1
6 is in contact with the belt surface; and a receiving portion 19 that extends from the contact portion 17 in a direction opposite to the belt traveling direction F and forms a gap 18 between it and the belt surface.
Since the solid matter 28 is generated by filling the gap 18 with the remaining deposits on the belt surface, so-called self-cleaning by the solid matter 28 is possible, and abnormal loads due to uneven portions on the belt surface can be prevented. There is little risk of damaging the belt even when the belt is subjected to damage.

Particularly, according to the present invention, while performing self-cleaning as described above, the gap 18 is
Openings are made on both sides of 6 and the belt traveling direction F
Since the opening is opposite to the gap 18, the gap 18 is
As the solid material 28 filled in the solid material 28 grows, the solid material 28 is caused to grow in a direction protruding from the opening.
The contact portion 17 is always kept in contact with the remaining deposits on the belt surface without causing the contact portion 17 to recede and separate from the remaining deposits on the belt surface, thereby ensuring the intended scraping by the contact portion 17, resulting in excellent cleaning. be effective.

Also, at least the connecting portion 17 of the chip 16
Since the belt is made of an elastic material, uneven portions on the belt surface can easily pass through the connecting portion 17, and damage to the belt can also be prevented in this respect.
That is, since the connecting portion 17 is always in contact with the residual deposits on the belt surface as described above, for example, if there is hard deposits on the belt surface, the hard deposits may scrape off the solid matter 28. If it progresses,
When the degree of adhesion of the hard deposits is low, the connecting part 1
7 can scrape off the deposits, but on the other hand,
When the degree of adhesion of the hard deposits is high, the connecting part 1
The belt is prevented from being damaged by passing through the deposits through the elastic deformation in step 7, and can satisfy both the scraping function and the belt protection function.

Furthermore, since the receiving surface 20 of the connecting portion 17 is an inclined surface that slopes in the belt traveling direction as it approaches the belt surface, the uneven portions on the belt surface are
The inclined surface functions as a guide to separate the chip 16 from the belt surface when the chip 7 collides with the chip 7, thereby achieving the intended purpose of preventing damage to the belt. In this regard, in addition to preventing damage to the belt due to the inclined surface of the connecting portion 17 at the tip 16, the present invention provides elastic support of the holding arm 15 by the elastic member 13 and elastic deformation of the connecting portion 17 at the tip 16. The two elastic means have the effect of preventing biting or biting during cleaning and reliably protecting the belt from damage, which is technically excellent.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the utility model registration claims based on the spirit of the present invention. For example, in the above embodiment, the entire tip 16 is integrally molded from wear-resistant rubber, but in the present invention, the connecting portion 17 and the receiving portion 19 of the tip 16 may be formed from separate members. In terms of elasticity, it is sufficient that at least the connecting portion 17 is made of an elastic material. Furthermore, in the above embodiment, the cleaner unit 11 equipped with the scraping tip 16 is provided with the holding arm 15, and the cleaning unit 11 cleans the surface of the belt 1 on the winding portion of the pulley 2. The scraping tip of the present invention can be applied to many known belt cleaner devices and cleaner units, and even when used on the belt return side after the pulley wrap, the same effect as described above can be achieved. can play.

[Brief explanation of the drawing]

FIG. 1 is a side view of a belt cleaner device equipped with a scraping tip according to an embodiment of the present invention, and FIG. 2 is an enlarged vertical cross-sectional view showing the state of the scraping action by the scraping tip according to the same embodiment. It is. DESCRIPTION OF SYMBOLS 1... Conveyor belt, 11... Cleaner unit, 15... Holding arm, 16... Scraping tip, 17... Connecting part, 18... Gap, 19... Receiving part, 20... Receiving surface, 21 ...Orthogonal plane, 22...
Mounting bolt, 28...solid object.

Claims (1)

[Claims for Utility Model Registration] 1. A holding arm 15 elastically supported toward the surface of the conveyor belt by an elastic member 13, and a scraper attached to the tip of the holding arm 15 for removing residual deposits from the surface of the conveyor belt. Taking tip 1
6, in which the scraping tip 16 is provided with: a contact portion 17 that contacts residual deposits on the belt surface; and a contact portion 17 that extends from the contact portion 17 in a direction opposite to the belt traveling direction and that extends between the scraping tip 16 and the belt surface. It is characterized by comprising a receiving part 19 which is located on both sides of the tip 16 and forms a gap 18 which is open on both sides of the tip 16 and facing the belt traveling direction, and at least the connecting part 17 is formed of an elastic material. Scraping tip for belt cleaner equipment. 2 The receiving surface 20 of the contact portion 17 facing the belt traveling direction is a perpendicular surface 21 that intersects the belt surface at right angles.
2. The scraping tip for a belt cleaner device according to claim 1, wherein the scraping tip has an inclined surface that is inclined in the belt traveling direction as it approaches the belt surface.