JPH0676130B2 - Belt cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a belt cleaner that scrapes and removes adhering substances such as conveyed substances adhering to the surface of a conveyor belt. INDUSTRIAL APPLICATION This invention can be utilized as a cleaning device installed in the conveyor belt which conveys conveyed materials, such as earth and sand, coal, coke, casting sand, ore, for example.

[Conventional technology]

Attached substances such as conveyed items tend to adhere to the surface of the conveyor belt as the conveying surface. In particular, when the conveyed product has an adhesive property, it tends to adhere. When the adhered matter adheres in this manner, the operation of the conveyor belt becomes unstable. Further, since the adhering matter is conveyed without being discharged from the conveyor belt, energy for driving the conveyor belt is required accordingly, resulting in a large energy loss. Therefore, a belt cleaner has been conventionally used. As a belt cleaner, as disclosed in Japanese Utility Model Publication No. 57-51219, a cleaning body for cleaning the adhered matter adhered to the conveyor belt by pressing the tip end against the conveyor belt, and an upper end part at the lower end of the cleaning body. It is known that an elastic holding body made of rubber that holds a portion thereof swingably, and a base body having a pair of opposing wall portions that sandwich a lower end portion of the elastic holding body.

[Problems to be solved by the invention]

By the way, in the belt cleaner disclosed in Japanese Utility Model Publication No. 57-51219, the lower part of the elastic holding body sandwiched by the opposing wall portions is precompressed, but the rubber portion directly holding the cleaning body is It is in a non-compressed state. Mitsuko Sho57-51
In the belt cleaner disclosed in the No. 219 publication, rather, the tip of the cleaning body is pushed in by the conveyor belt,
Since the degree of lateral bulging deformation of the elastic holder increases,
Stress in the tensile direction acts on the surface of the elastic holder. Therefore, fatigue and permanent strain of the elastic holder are increased, and the life and durability of the elastic holder are not always sufficient.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to adopt a structure advantageous for relaxing the stress in the tensile direction by increasing the compression degree of the elastic holding body, and the life of the elastic holding body,
To provide a belt cleaner that is advantageous in durability.

[Means for solving problems]

The belt cleaner according to the present invention is arranged between a base body having a pair of facing wall portions facing each other, which are arranged at a predetermined interval, and a pair of facing wall portions of the base body, and a tip portion thereof is pressed against a conveyor belt. To clean the adhering substances that have adhered to the conveyor belt, and to vulcanize the cleaning body whose lower end is located below the upper end of each opposing wall, each opposing wall of the base body and the central portion of the cleaning body. At least one of the portions that are vulcanized and bonded to the cleaning body has an inverted V-shape that is inclined and descends toward each of the facing wall portions of the base body, with an apex that is bonded and vulcanized and bonded to the cleaning body. The portion is located at a position lower than the upper end of the facing wall portion of the base body, and is pre-compressed in a direction in which the interval between the facing wall portions is narrowed, and the cleaning body is displaced toward the tip side as compared with when not being pre-compressed. An elastic holding body for swingably holding the cleaning body in a state, and the cleaning body. And interposed between the base body engages the lower end of the cleaning body is characterized in that it is constituted by an engaging portion for restricting the rocking angle of said cleaning element.

The base body is a member that holds the elastic holding body, and has a pair of opposing wall portions that are arranged at predetermined intervals. The substrate can be made of metal such as steel plate or stainless steel plate.

The cleaning body can be made of a steel plate or a stainless steel plate. The tip of the cleaning body is preferably made of a chip made of a cemented carbide such as WC or WC-Co, or a ceramic such as alumina or silicon nitride in the sense of reducing wear of the tip.

The elastic holder is vulcanized and adhered to the opposing wall portions of the base body and the central portion of the cleaning body. The elastic holding body has an inverted V-shape that has a portion vulcanized and adhered to the cleaning body as an apex and inclines downward toward each opposing wall portion of the base. The elastic holder is pre-compressed in the direction in which the distance between the opposing wall portions is narrowed. The degree of pre-compression of the elastic holder depends on the type of belt cleaner.
Although appropriately set, the elastic holder can be pre-compressed so that, for example, the thickness before compression is approximately 33 to 35 mm and the thickness after compression is approximately 30 to 32 mm.

Further, when the belt cleaner of the present invention is used, the compression degree of the elastic holding body is increased by pressing the tip of the cleaning body against the conveyor belt as described later.

The engagement body is interposed between the base body and the cleaning body, and regulates the swing amount of the cleaning body to be constant. An elastic engaging body having elasticity can also be used as the engaging body. Generally, the elastic engagement body is preferably made of a rubber material, like the elastic holding body.

[Action]

The operation of the belt cleaner of the present invention will be described together with the method of using it. First, the tip of the cleaning element is pressed against the surface of the conveyor belt. Then, the cleaning body is pushed in a direction away from the conveyor belt, and the inverted V-shaped elastic holding body is also pushed in between the opposing wall portion and the cleaning body, and the compression degree of the elastic holding body is increased.

When the conveyor belt travels with the tip of the cleaning body pressed against the surface of the conveyor belt in this way, the adhered matter that has adhered to the surface of the conveyor belt successively hits the tip of the cleaning body, and the adhered matter is scratched. And falls from the conveyor belt.

At this time, the front end of the cleaning body swings in the driving direction of the conveyor belt due to the frictional force between the front end of the cleaning body and the conveyor belt. The excessive swing of the cleaning body is restricted by the engagement body.

〔Example〕

Hereinafter, the belt cleaner of the present invention will be described more specifically with reference to the embodiments shown in the drawings.

(Structure) The belt cleaner of this example includes a cleaning body 1 and an elastic holding body 2.
And an engaging body 3 and a base body 4.

The cleaning body 1 is made of a steel plate. The lower end 10 of the cleaning body 1 has notches on both sides. The tip of the cleaning body 1 is a tip 11 made of cemented carbide.

The elastic holder 2 is made of synthetic rubber and has a rubber hardness of JI.
It is made to be 40-70 with SK6301. The elastic holder 2 has a relatively thick and thick shape. This elastic holder 2
Are provided by vulcanization bonding on both sides of the central portion of the cleaning body 1, and elastically hold the central portion of the cleaning body 1. As shown in FIG. 1, the upper surface 20 and the lower surface 21 of the elastic holder 2 are inclined upward toward the cleaning body 1. Therefore, the elastic holder 2 has an inverted V-shape in which the portion vulcanized and adhered to the cleaning body 1 is an apex and is inclined and descends toward each facing wall portion 42a.

The engaging body 3 is made of synthetic rubber and has a rubber hardness of JIS K6301.
It is said to be 40-70. A space S is formed between the engagement body 3 and the elastic holding body 2 as shown in FIG. When the cleaning body 1 swings excessively in the space S, the lower end portion 10 of the cleaning body 1
Comes into contact with and engages with the engaging body 3.

The base body 4 holds the elastic holding body 2 and the engaging body 3 by vulcanization adhesion. The base body 4 is formed by binding two thin steel plates 40 together. A mounting hole 41 is formed in the lower portion of the base body 4. Since the mounting hole 41 is vertically long,
Mounting bolts (not shown) inserted in the mounting holes 41
By vertically moving the base body 4 in a state in which the belt is loosened, the vertical mounting position of the belt cleaner of this example can be adjusted appropriately. The two thin steel plates 40 form a box part 42 having a pair of opposing wall parts 42a arranged at a predetermined interval.

Now, in the belt cleaner according to the present embodiment, the elastic holder 2 is arranged in the direction of narrowing the interval between the opposing wall portions 42a, that is, the arrow A.
Direction is pre-compressed. In manufacturing this belt cleaner, the cleaning body 1 is disposed in the pair of opposing wall portions 42a, and the elastic holder 2 is interposed between the cleaning body 1 and the opposing wall portion 42a. Part 4
The elastic holder 2 is manufactured by sequentially performing a compression step of bringing the elastic holder 2 into a precompressed state by tightening 2a toward the cleaning element 1, that is, in the direction of arrow F shown in FIG. In addition,
FIG. 1 shows a state before the facing wall portion 42a is tightened.
As shown in FIG. 1, in the state before tightening, the facing wall portion 42
a has a taper that expands toward the upper end. Distance L1 between the upper ends of the pair of opposing wall portions 42a before tightening (Fig. 1)
Is about 33 mm. The distance L2 (FIG. 2) between the upper ends of the pair of opposed wall portions 42a after the tightening process is about 30 mm. Therefore, in this embodiment, the elastic holder 3 has a compressibility of about 10%.

When using the belt cleaner of this example, the cleaning body 1
Chips 11 are pressed against the surface 5a of the conveyor belt 5.
Then, the conveyor belt 5 pushes the cleaning body 1 downward in the drawing. Here, since the outward V-shaped elastic holder 2 is restricted from laterally outwardly bulging and deformed by the opposing wall portion 42a, the inverted V-shaped elastic holder 2 is also forcedly pushed downward in the drawing. As a result, the degree of compression of the elastic holding body 2 in the arrow A direction also increases. That is, in this embodiment, the elastic holder 2 is formed by the opposing wall portion.
In addition to the first-stage compression in which the 42a is narrowed and is pre-compressed in the direction of arrow A, the second-stage compression in the direction of arrow A by pressing the chip 11 against the conveyor belt 5 to deform the elastic holder 2 is performed. Can be expected.

When the conveyor belt 5 is driven in the direction of the arrow 51 (see FIG. 4) with the chip 11 of the cleaning body 1 pressed against the surface 5a of the conveyor belt 5 as described above, the surface of the conveyor belt 5
The deposits adhering to 5a are sequentially scraped against the chips 11, whereby the deposits are cleaned and removed from the conveyor belt 5. At this time, as shown in FIG. 4, the tip of the cleaning body 1 with the vicinity of the central portion P of the cleaning body 1 as a fulcrum
11 swings in the direction of arrow 53 and the lower end 10 of the cleaning body 1
Swings in the direction of arrow 54. When the swing amount of the cleaning body 1 becomes a certain amount or more, the lower end portion 10 of the cleaning body 1 hits and engages with one of the engaging bodies 3 as shown in FIG. 4, and the swing amount of the cleaning body 1 becomes a certain amount. Regulated by.

In addition, the conveyor belt 5 rotates in the reverse direction, and the conveyor belt 5
Even when the driving direction of the cleaning body 1 changes to the direction opposite to the arrow 51, the tip 11 of the cleaning body 1 still has the elastic holding body 2
While swinging in the direction opposite to the front with the portion P as the fulcrum, the lower end portion 10 of the cleaning body 1 also swings in the direction opposite to the front. Then, when the swing amount exceeds a certain amount, the lower end portion 10 hits and engages with the other engaging body 3 as before, and the swing amount of the cleaning body 1 is regulated to a certain amount.

(Effect) As described above, in the present embodiment, the lowermost portion 2r of the elastic holding member 2 that is vulcanized and bonded to the cleaning member 1 is the facing wall portion.
The elastic holder 2 is positioned below the upper end portion 42e of the 42a, and is compressed in a direction in which the distance between the pair of opposed walls 42a is narrowed.
And the cleaning body 1 are pre-compressed in the direction of arrow A. Further, when the tip 11 of the cleaning body 1 is pressed against the surface 5a of the conveyor belt 5, the cleaning body 1 is pushed in a direction away from the conveyor belt 5, and the inverted V-shaped elastic holder 2 is also cleaned with the opposing wall portion 42a. It is forcibly pushed into and out of the body 1 and a second stage compression of the elastic holder 2 in the direction of arrow A is obtained. Therefore, the degree of compression of the elastic holder 2 is increased, which is advantageous for improving the life and durability of the elastic holder 2,
The force of the elastic holder 2 that presses the chips 11 of the cleaning body 1 against the conveyor belt 5 can be maintained in a good state, and the cleaning effect of the belt cleaner can be maintained well for a long period of time.

That is, when the adhered matter is removed by cleaning, as can be understood from FIG. 4, the cleaning body 1 is subjected to frictional force with the conveyor belt 5 or the like.
The tip 11 swings in the driving direction of the conveyor belt 5 with the portion P of the elastic holder 2 as a fulcrum. At this time, due to the swinging of the cleaning body 1, a stress F1 in the compression direction acts on the upper surface 20 of the elastic holding body 2 on the conveying direction side of the conveyor belt 5, that is, on the front side, and on the lower surface 21 of the elastic holding body on the front side. Has a stress F2 in the tensile direction. Further, as can be understood from FIG. 4, a stress F3 in the compression direction acts on the lower surface 21 of the elastic holding body 2 on the rear side, and a stress F4 in the tensile direction on the upper surface 20 of the elastic holding body 2 on the rear side. Works. Therefore, when the elastic holder 2 is not pre-compressed, the elastic holder 2 is repeatedly used for a long period of time due to repeated stress in the tensile direction.
May become fatigued, the elastic holder 2 may be permanently deformed, and may remain inclined in the traveling direction of the conveyor belt 5 as shown in FIG. 4, the restoring force may be lost, and the cleaning body 1 may not return to the vertical direction. is there. In this case, the force of pressing the chips 11 of the cleaning body 1 against the conveyor belt 5 is reduced, and the cleaning effect of the belt cleaner may be reduced.

In this respect, in the belt cleaner according to the present embodiment, the elastic holding body 2 has the arrow A by narrowing the pair of opposing wall portions 42a.
Is pre-compressed in the direction, and by pressing the chip 11 against the conveyor belt 5, the elastic holding portion 2
The degree of compression is even higher. Therefore, the elastic retainer 2 is less likely to fatigue, and in particular, the portion 25 where the stress F2 in the tensile direction acts is less prone to fatigue because the elastic retainer 2 is in a compressed state, and therefore permanent strain is less likely to occur, and thus elastic The life and durability of the holder 2 can be improved. Therefore, a good cleaning effect of the belt cleaner can be secured for a long period of time.

Further, in this embodiment, since the excessive swing of the cleaning body 1 is regulated by the engagement body 3, the stress in the tensile direction generated in the elastic holding body 2 at the time of swinging can be relaxed, and therefore, the life of the elastic holding body 2 can be reduced.
It is more advantageous for improving durability.

Further, in this embodiment, the elastic holder 2 is formed by the opposing wall portion 42 of the base 1.
It is vulcanized and bonded to a and the central portion of the cleaning body 1. Here, if the stress in the tensile direction generated in the elastic holding body 2 when the cleaning body 1 swings is large, the vulcanized adhesive portion may peel off due to the stress. In this respect, in this embodiment, as described above, the elastic retainer 2 has a high degree of compression in the direction of arrow A, and the vulcanized adhesive portion is compressed in the direction of arrow A.
It is also advantageous to avoid peeling of the vulcanized adhesive part. Moreover, it is also advantageous to avoid peeling of the vulcanized adhesive portion in that the stress in the tensile direction generated in the elastic holder 2 due to the swing of the cleaning body 1 can be relaxed.

〔The invention's effect〕

As described above, in the belt cleaner of the present invention, the elastic holding body is pre-compressed in the direction in which the distance between the pair of opposing walls is narrowed, and at this time, at least one of the elastic holding bodies is vulcanized and bonded to the cleaning body. The portion is located at a position lower than the upper end portion of the facing wall portion. Therefore, the elastic holding body is pre-compressed between the opposing wall portion and the cleaning body. Further, in the belt cleaner of the present invention, when the tip of the cleaning body is pressed against the surface of the conveyor belt, the cleaning body is pushed in the direction away from the conveyor belt, and the inverted V-shaped elastic holder also cleans the opposing wall portion. It is pressed into and out of the body, increasing the degree of compression of the elastic holder.

As described above, in the belt cleaner of the present invention, the elastic holding member is 2
Since it is compressed in stages, a high degree of compression can be obtained, which is advantageous in improving the life and durability of the elastic holder, and can also prevent peeling of the vulcanized adhesive portion of the elastic holder. Therefore, the elastic biasing force of the elastic holder that presses the tip of the cleaning body against the conveyor belt can be maintained in a good state, and the cleaning effect of the belt cleaner can be maintained well for a long period of time.

Further, in the belt cleaner according to the present invention, since the excessive swing of the cleaning plate is regulated by the engaging body, the stress in the tensile direction generated in the elastic holder can be regulated and relaxed, and the life and durability of the elastic holder can be improved. It is even more advantageous, and a good cleaning effect of the belt cleaner can be further secured for a long period of time.

[Brief description of drawings]

1 to 4 show a first embodiment of the present invention. FIG. 1 is a sectional view of a belt cleaner before the elastic holder is pre-compressed, and FIG. 2 is the elastic holder pre-compressed. FIG. 3 is a sectional view of the belt cleaner in the rear state, FIG. 3 is a partially cutaway front view, and FIG. 4 is a sectional view of the belt cleaner in use. In the figure, 1 is a cleaning body, 11 is a tip (tip portion), 2 is an elastic holding body, 3 is an engaging body, 4 is a base, 42a is a facing wall, and 5 is a conveyor belt.

Claims (1)

[Claims] 1. A conveyor having a pair of opposing wall portions facing each other, which are arranged at a predetermined interval, and a pair of opposing wall portions of the substrate, the front end of which is pressed against a conveyor belt. The adhered matter adhered to the belt is cleaned and vulcanized and adhered to the cleaning body whose lower end portion is located below the upper end of each opposing wall portion, each opposing wall portion of the base body and the central portion of the cleaning body. At least a part of the portion vulcanized and adhered to the cleaning body has an inverted V shape in which the portion vulcanized and adhered to the cleaning body is an apex and is inclined downward toward each of the facing wall portions of the base body. At a position lower than the upper end of the opposing wall portion of the base body, pre-compressed in a direction of narrowing the interval between the opposing wall portions, and the cleaning body is displaced toward the tip side as compared with when not being pre-compressed. An elastic holding body that holds the cleaning body swingably, and a space between the cleaning body and the base body. Interposed belt cleaner, characterized in that it is constituted by an engaging portion for restricting the rocking angle of said cleaning element engages the lower end of the cleaning element.