JPS6259003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a belt cleaner device that scrapes off and cleans residues such as conveyed objects adhering to a conveyor belt.

(Prior Art) In the belt cleaner device described above, cleaner units are arranged in parallel in the belt width direction on a support frame below the conveyor belt.

A conventional cleaner consists of an elastic body provided on a support frame, a holder provided on the elastic body that swings in the longitudinal direction of the belt through simple expansion and contraction deformation of the elastic body, and a holder provided on the holder that swings in the longitudinal direction of the belt. Some devices are equipped with a chip that is pressed against the return side of the belt by the elastic force generated by the above-mentioned simple expansion and contraction, and scrapes off the residue adhering to the belt surface.

By the way, in the above-mentioned belt cleaner device, when the belt moves up and down or the belt surface wears out, the holder swings due to the above-mentioned simple expansion and contraction deformation of the elastic body, which causes the chips to move against the belt surface. Follow.

Therefore, in order to ensure that the chips follow the belt well for a long period of time without making any adjustments to the cleaner device, it is necessary to increase the amount of swinging of the holder and reduce the displacement of the chips from their original position. It is necessary to increase the amount of wear possible, especially since the center side of the belt in the width direction has more wear than the left and right sides.
The need for the above is great.

(Problem to be Solved by the Invention) However, in the above-mentioned conventional cleaner device, the holder is oscillated by simple expansion and contraction deformation of the elastic body, which greatly increases the amount of possible displacement of the chip from its original position. In this case, when cleaning by scraping off the residue with the cleaner device, reduce abnormal movements such as vibration of the holder in the belt width direction or vibration of the holder in the belt longitudinal direction around the center in the belt width direction. There was a problem that the cleaning work for scraping off the residue could not be performed satisfactorily due to the above-mentioned abnormal movement.

The present invention makes it possible to improve the followability of the chips to the belt for a long period of time without adjusting the cleaner device, and also to reduce abnormal movements such as vibration of the holder, and to improve the cleaning work by scraping off the residue. The purpose of the present invention is to provide a belt cleaner device that can perform the following tasks.

(Means for Solving the Problems) In order to achieve the above object, the first aspect of the present invention is characterized in that the support frame 6 and one of the holders 11 are provided with left and right sides facing each other in the width direction of the conveyor belt 1. A pair of first members are provided, and the other is provided with a second member located between both the first members, and between the second member and each of the first members, there is an axis in the width direction of the belt 1. A pair of left and right elastic bodies 10 that swing the holder 11 by torsional deformation of the surroundings are interposed in a compressed state, and the holder 11 is pressed against the return side of the belt 1 by the elastic force generated by the torsional deformation of the elastic bodies 10. belt 1
The second invention is characterized in that it is provided with a chip 12 for scraping off the residue adhering to the surface, and in addition to the above configuration, it further slows down the speed of torsional deformation around the axis of the elastic body 10. The point is that it is equipped with a braking means.

(Function) According to the present invention, during cleaning work for scraping off residue from the belt 1, the elastic body 10 is torsionally deformed around the axis, the holder 11 is swung, and the chips 12 are moved onto the surface of the belt 1. The chips 12 are brought into pressure contact with each other on the return side, and the chips 12 scrape off and clean the residue adhering to the surface of the belt 1.

Moreover, between the second member and each first member,
Since the elastic body 10 is interposed in a compressed state, the elastic force generated by the shrinkage deformation of the elastic body 10 causes the swing of the belt 1 of the holder 11 in the width direction, and the center of the belt 1 of the holder 11 in the width direction. Surrounding belt 1
Abnormal movements such as longitudinal runout can be reduced,
Cleaning work by scraping off residue can be done well.

Furthermore, according to the second invention, when the holder 11 swings due to the tip 12 getting caught in a part where the belt 1 is joined to make it endless or a scratch on the surface of the belt 1, the holder 11 and the tip 12 are When returning to the original position, the torsional deformation speed of the elastic body 10 is slowed down by the brake means, so the return speed of the holder 11 and the tip 12 to the original position is slow, and therefore the tip 12 is attached to the belt. There is no risk of causing corrugated wear on the belt 1 surface by hitting the surface with a large force.

(Embodiment) Hereinafter, a first embodiment of the present invention will be described based on the drawings of FIGS. 1 to 8. In FIG.
is a conveyor belt, which is wound between the driving roller 2 and the driven roller. A guide roller 3 guides the surface of the belt 1 on the return side.

Reference numeral 5 denotes a belt cleaner device, which is capable of supporting both forward and reverse rotation of the belt 1, and is provided below or near the drive roller 2 on the return side of the belt 1, but located behind the guide roller 3. Sometimes I do. In the illustrated example, the cleaner device 5 is provided below the drive roller 2, but it does not protrude outward beyond the front end of the head 1, and the cleaner device 5 is provided below the drive roller 2.
There is no risk that the conveyed objects will land on the cleaner device 5.

As shown in FIGS. 1, 3 to 8, the cleaner device 5 includes a support frame 6, a large number of cleaner units 7 arranged in parallel in the width direction of the belt 1 on the support frame 6, and a cover 8. It consists of

The support frame 6 consists of a round pipe, and the belt 1
It is installed horizontally in the width direction. A pair of left and right brackets 9 shown as first members are provided upright at each attachment point of the cleaner unit 7 on the support frame 6.
The brackets 9 are opposed to the belt 1 in the width direction. As the support frame 6, channel material, square pipe material, and other frame materials may be used.

The cleaner unit 7 includes a pair of left and right elastic bodies 10,
It mainly consists of a holder 11, a chip 12, a brake body 13, etc.

The elastic body 10 is arranged between both brackets 9,
The belt 1 has an axis parallel to the width direction of the belt 1, and the axes of the left and right elastic bodies 10 are aligned. The elastic body 10 includes a mounting disk 14 at the outer end, a clamping disk 15 at the inner end, and a cylindrical elastic section 16 made of a rubber material interposed between the disks 14 and 15.
and a mounting bolt 17, which have the same axis. Both end surfaces of the elastic portion 16 are provided with both discs 14 and 15.
It is fixed by baking. The head of the mounting bolt 17 is embedded in the outer side of the elastic portion 16, and is inserted through the mounting disc 14 and protrudes outward. The mounting bolts 17 are inserted into notch holes 9a that open upwardly in each bracket 9, and are inserted into nuts 18.
is fastened, the elastic body 10 is connected to the bracket 9
It is removably attached to the An insertion groove 19 is formed in the center of the inner surface of the holding disc 15 in the front-rear direction in the vertical direction. Reference numeral 20 denotes a stopper, which projects inwardly from the center in the front-rear direction of the lower end of the bottom surface of the insertion groove 19, but does not project to the outside of the insertion groove 19. In the illustrated example, the stopper 20 is attached to the clamping disc 15 by screw means, welding, or the like, but it may be formed integrally with the clamping disc 15. Note that both discs 14 and 15 are made of a metal material such as iron, a resin material, or the like.

The holder 11 has a T-shape and consists of a mounting part 22 installed horizontally in the width direction of the belt 1, and an arm part 23 shown as a second member installed below from the center part of the belt 1 in the width direction in the mounting part 22. . The mounting portion 22 has an inverted trapezoidal shape when viewed from the side, and both side surfaces of the arm portion 23 are perpendicular to the width direction of the belt 1. Arm part 2
3 is removably inserted into the insertion groove 19 of both the elastic bodies 10 to compress both the elastic bodies 10 in the axial direction, and the arm part 23 is configured to absorb the elastic force generated by the compressive deformation of both the elastic bodies 10. It is clamped and fixed by force. A notch 24 that opens downward is formed in the center of the lower end of the arm portion 23 in the front-rear direction, and the stopper 20 is inserted into the notch 24.
By coming into contact with the upper inner surface of the notch portion 24, the arm portion 23 is prevented from moving downward.
The front and rear corners of the lower end of the arm portion 23 are chamfered, and the lower end portion of the arm portion 23 is tapered when viewed from the front, so that the arm portion 23 can be easily inserted into the insertion groove 19. And elastic body 1
The holder 11 swings in the longitudinal direction of the belt 1 due to the torsional deformation around the axis of the belt 1.

In addition, as shown by the imaginary line in FIG.
A claw portion 2 protruding in the front and back direction at the front and back of the lower end of 3.
5, and these claw portions 25 are removably engaged with the lower end of the outer peripheral surface of the holding disc 15 through elastic deformation, thereby preventing the arm portion 23 from easily coming out of the insertion groove 19. Sometimes it is.

The chips 12 are fixed to the front and rear surfaces of the attachment part 22, and are pressed against the surface of the belt 1 on the return side by the elastic force generated by the torsional deformation of the elastic body 10, thereby scraping off the residue adhering to the surface of the belt 1. The chip 12 is made of a highly hard and wear-resistant material such as cemented carbide or ceramic.

The brake body 13 includes an insertion portion 26 that is vertically installed.
, an overhanging portion 27 extending inward from the upper end of the insertion portion 26 , and a brake portion 28 provided below from the inner end of the overhanging portion 27 . An engagement hole 29 is cut out from the lower end in the central part of the insertion part 26 in the front-rear direction, and the insertion part 26 is connected to the bracket 9 and the mounting disc when the mounting bolt 17 is engaged with the engagement hole 29. 14, the elastic body 10 is further compressed in the axial direction, and the clamping and fixing force of the arm portion 23 is further increased.
It is clamped and fixed by the elastic force generated by the compressive deformation of. The projecting portion 27 is located above the elastic body 10. The lower end edge of the brake part 28 is formed in an arcuate shape that projects upward, and is brought into contact with the upper surface of the outer surface of the outer peripheral surface of the holding disc 15 so as to be relatively slidable around the axis. Slow down the deformation speed.

The inner corner of the upper end of the bracket 9 is chamfered, and the distal end of the insertion portion 26 is also tapered in front view, so that the bracket 9 of the insertion portion 26 and the mounting disc 1
It is designed so that it can be easily inserted into the four spaces.

The cover 8 covers the support frame 6 and the base of the cleaner unit 7 from above and from the front and back to prevent scraped residue from adhering. A mouth 30 is formed. The cover 8 is made of a resin sheet such as a polyethylene sheet, or a silicone sheet. Polyurethane. It is made of cloth or the like impregnated with epoxy or Teflon registered trademark resin, etc., so that residues scraped off from the belt 1 are difficult to adhere to, and it has abrasion resistance, chemical resistance, oil resistance, etc. The cover 8 is designed so that the residue easily slides down on the cover 8.

According to the embodiment configured as described above, when attaching the cleaner unit 7 to the support frame 6, first, the elastic bodies 10 are attached to the left and right brackets 9, respectively, and then the insertion portion 26 of the brake body 13 is The cover 8 is inserted between the bracket 9 and the mounting disc 14.

Thereafter, by inserting the arm portion 23 of the holder 11 equipped with the tip 12 into the insertion opening 30 of the cover 8 and pushing it into the insertion groove 19 of both clamping discs 15, the cleaner unit 7 is attached to the support frame 6. be able to.

As described above, the arm portion 23 is held between the two holding disks 15
The chip 12 can be inserted by simply pushing it into the insertion groove 19 of the chip.
The holder 11 provided with the above can be attached to the support frame 6 side, and the holder 11 and the chip 12 can be easily attached and detached with a single touch.

When the cleaner device 5 is set on the belt 1, the top surface of the mounting portion 22 of the holder 11 is in contact with the surface of the belt 1, and the arm portion 23 is set perpendicular to the longitudinal direction of the belt 1. Set.

When the belt 1 is circulated in the direction of the arrow while conveying the conveyed object, the mounting portion 2
Since holder 2 is in contact with belt 1, holder 1
1, while twisting and deforming the elastic body 10 around the axis, as shown by the imaginary line in FIG.
The front tip 12 swings in the feeding direction of the belt 1.
By being in pressure contact with the surface, the rotational force of the holder 11 by the belt 1 and the elastic force generated by the torsional deformation of the elastic body 10 are balanced. When changing the posture of the holder 11, the holder 11 and the belt 1 move up and down slightly. Note that the holder 11 can be lowered until the holding disk 15 comes into contact with the support frame 6, as shown by the imaginary line in FIG.

When the belt 1 is circulated in the above-mentioned state, the chips 12 can scrape off and clean the surface of the belt 1 from residues such as conveyed materials.

In this case, the belt 1 surface and the chip 12
The scraping cleaning effect is greater when the angle α formed with the front surface is 90 degrees or more, but the angle α may be 90 degrees or less.

In the above case, the arm portion 23 of the holder 11 is arranged between both brackets 9 of the support frame 6, and the elastic body 10 is interposed between the arm portion 23 and each bracket 9 in a compressed state. So,
The elastic force generated by the shrinkage deformation of the elastic body 10 causes the belt 1 of the holder 11 to swing in the width direction as shown by the arrow in FIG. 1, or the width of the belt 1 of the holder 11 as shown by the arrow in FIG. Abnormal movements such as longitudinal deflection of the belt 1 around the direction center can be reduced, and cleaning work for scraping off residue can be performed satisfactorily.

Also, due to the torsional deformation of the elastic body 10 around the axis,
The holder 11 is configured to swing in the longitudinal direction of the belt 1, and the shear modulus of elasticity of the elastic portion 16 of the elastic body 10 is not significantly affected by compression of the elastic portion 16 in the axial direction. From, holder 11
The amount by which the belt 1 can be swung in the longitudinal direction can be increased, and the amount by which the chip 12 can be displaced from its original position can also be increased. It can be swung up to.

As described above, if the amount of displacement of the tip 12 can be increased, the ability of the tip 12 to follow the belt 1 can be made good for a long period of time without adjusting the cleaner device 5.

Also, when cleaning by scraping off the residue, use tip 12.
However, when the holder 11 is caught in a place where the belt 1 is connected to make it endless or a scratch on the surface of the belt 1, the holder 11 swings in the direction in which the belt 1 is fed. Then, when the chip 12 is separated from the above-mentioned bonded area or scratch, the holder 11 and the chip 12 return to their original positions by the elastic force of the elastic body 10. In this case, since the brake body 13 is provided to slow down the torsional deformation speed of the elastic body 10, the holder 1
The speed at which the chips 1 and the chips 12 return to their original positions is slow, so there is no risk that the chips 12 will hit the surface of the belt 1 with a large force and cause corrugated wear on the surface of the belt 1.

Furthermore, in the above case, since the holder 11 has a T-shape when viewed from the front, almost all of the residue scraped off from the belt 1 passes through to the rear side of the cleaner device 5 and collides with the holder 11. The amount of residue left behind is small.

Therefore, even when the thickness of the residue adhering to the belt 1 is thick, the holder 11 swings due to the collision force of the residue colliding with the holder 11, and the chips 12 are separated from the belt 1 surface. There is no risk that the cleaning effect of scraping off the residue from the belt 1 will deteriorate.

Furthermore, as mentioned above, there is a flow around the chip 12 in which the residue scraped off from the belt 1 passes through to the rear of the cleaner device 5, so even if the residue is a sticky substance, There is no risk that a large amount of residue will adhere to the chips 12, which will reduce the cleaning effect of scraping off the residue or cause the belt 1 to wear out.

The elastic portion 16 of the elastic body 10 may have a square cross-section, a hexagonal cross-section, or a square cross-section or a hexagonal cross-section with a round hole in the center.

9 and 10 show a second embodiment of the present invention, in which a pair of upper and lower through-holes 32 are formed in front and rear of the insertion groove 19 in the clamping disc 15 of the left and right elastic bodies 10, respectively. Only the elastic portions 16 of the left and right elastic bodies 10 are integrated through these through holes 32.

Each figure of FIG. 11 and FIG. 12 shows the third,
4 shows each embodiment, in which the arm portion 23 of the holder 11 is composed of a base side member 33 and a tip side member 34. The base side member 33 and the left and right holding discs 15 are integrated. In addition, the base side member 3
3 and the left and right holding discs 15 may be separate bodies.

In the third embodiment, the base side member 33 and the tip side member 34 are simply detachably connected by bolts 35.

Further, in the fourth embodiment, it is formed into a rectangular tube shape with the tip side member 34, is externally fitted on the base side member 33, and is detachably fixed with a bolt 35.

13 to 15 show a fifth embodiment of the present invention, in which the left and right elastic bodies 10 are attached to a bracket 9 by a single mounting bolt 17 that passes through the left and right direction.
installed on. Arm portion 23 of holder 11
is curved, and a notch 24 at its base is engaged with a mounting bolt 17, which also serves as a stopper for the holder 11. and,
The tip 12 is provided only on the front surface of the mounting portion 22 of the holder 11, making it a so-called single-edged type. Holder 1
1, the belt 1 has a rising shape at the front side of the part where it is wound around the drive roller 2, and the tip 12
is pressed against the front end of the belt 1, and the tip 1
If holder 2 gets caught in a scratch on belt 1, remove holder 1.
1 and chips 12 can easily escape to the front side of the belt 1. Note that, as described above, since the mounting bolt 17 passes through both elastic bodies 10, abnormal movements such as vibration of the holder 11 can be further reduced compared to the above embodiment.

FIG. 16 shows a sixth embodiment of the present invention,
The elastic portion 16 of the elastic body 10 has a cylindrical shape.
A brake body 13 that passes through an elastic portion 16 is protruded outward from the center of the holding disc 15 , and the tip of the brake body 13 is pressed against the center of the mounting disc 14 . Slow down the torsional deformation speed. As the brake body 13, a hard material such as metal is used when the belt 1 only rotates in the forward direction, and when the belt 1 rotates in the forward and reverse directions, the brake body 13 is made of a flexible material such as a rubber material or a spring. Use watermelon. Reference numeral 36 denotes a compressive force applying member, which is interposed between the mounting disc 14 and the bracket 9, and whose engagement hole 37 is engaged with the mounting bolt 17.

17 and 18 show a seventh embodiment of the present invention, in which the elastic part 16 of the elastic body 10 is cylindrical, and the inside is filled with a resistance material 38 such as liquid or powder, and A blade body 39 is provided protruding from the disk 15 into the elastic portion 16, and when the elastic body 10 is torsionally deformed, the blade body 39 rotates within the resistance material 38, so that the speed of torsional deformation is slowed down.

19 and 20 show an eighth embodiment of the present invention, in which each cleaner unit 7 of the support frame 6
A single bracket 9 is fixed as a second member at the attachment point, and the base of the bracket 9 is bifurcated. A pair of left and right elastic bodies 10 are disposed at the base of the bracket 9, with the mounting disc 14 on the inside. Moreover, the arm portion 2 of the holder 11
The base portion of belt 3 is bifurcated, and a pair of left and right opposing portions 41 are formed that face each other in the width direction of belt 1 . The opposing portion 41 is inserted into the insertion groove 19 of the holding disc 15 as a first member. In addition, a notch 2 is provided from the lower side at the central portion of the facing portion 41 in the front-rear direction.
4 are notched, and these notches 24, the elastic body 1
0. The cleaner unit 7 is fixed to the bracket 9 by inserting the mounting bolt 17 into the bracket 9 and screwing the nut 18. The brake body 13 is in the form of a band made of iron and resin, and is wrapped around the inner side of the holding disc 15, and its both ends are fixed to the base of the bracket 9 with bolts 42.

FIG. 21 shows a ninth embodiment of the present invention, in which the holder 11 is provided with a pair of left and right arm portions 23, and the arm portions 23 are used as the first member.
Then, in the same manner as in the eighth embodiment, the cleaner unit 7
is attached to the support frame 6.

(Effects of the Invention) As described in detail above, according to the present invention, it is possible to increase the amount of possible displacement of the chip from its original position by swinging the holder, and to remove the chip from the belt cleaner without adjusting the belt cleaner device. In addition to maintaining good followability over a long period of time, it is possible to reduce abnormal movements such as deflection of the holder in the belt width direction and deflection of the holder in the longitudinal direction of the belt around the center of the belt width direction. Scraping and cleaning work can be performed well.

Furthermore, according to the second invention, since the brake means is provided to slow down the speed of torsional deformation around the axis of the elastic body, the chips can be prevented from getting caught in the parts where the heads are connected endlessly or scratches on the belt surface. In the event of a chipping, the return speed of the chip to its original position is slow, so there is no risk that the chip will hit the belt surface with a large force and cause wave-shaped wear on the belt surface.

The present invention has the above advantages and is of great practical benefit.

[Brief explanation of the drawing]

1 to 8 show a first embodiment of the present invention, FIG. 1 is a front view of the belt cleaner device, and FIG.
The figure is a partial side view of the conveyor belt device, each figure in Figures 3 and 4 is a sectional view taken along the line A-A and B-B in Figure 1, and Figure 5 is a C in Figure 3. -C line arrow sectional view, Figure 6 is a DD line arrow sectional view of Figure 5,
The figure is a side view showing the relationship between the brake body and the clamping disc, FIG. 8 is a front view of the lower part of the holder, FIGS. 9 and 10 show a second embodiment of the present invention, and FIG. FIG. 10 is a front view of the holding disc, FIGS. 11 and 12 are front views of belt cleaner devices according to the third and fourth embodiments of the present invention, and FIG. 15 shows a fifth embodiment of the present invention, FIG. 13 is a longitudinal sectional view of the belt cleaner device, FIG. 14 is a rear view thereof, and FIG. 15 is a view taken along the line E-E in FIG. 13. The sectional view, FIG. 16, is the sixth embodiment of the present invention.
17 and 18 show a seventh embodiment of the present invention, FIG. 17 is a front sectional view of the main part, and FIG. 18 is a front sectional view of the main part of FIG. 17. F
19 and 20 show the eighth embodiment of the present invention, FIG. 19 is a partially sectional front view of the belt cleaner device, and FIG.
A sectional view taken along the line G and FIG. 21 are a partially sectional front view of a belt cleaner device according to a ninth embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Conveyor belt, 5... Belt cleaner device, 6... Support frame, 7... Cleaner unit, 9... Bracket, 10... Elastic body, 11...
...Holder, 12...Chip, 13...Brake body.

Claims (1)

[Claims] 1. One of the support frame 6 and the holder 11 is provided with a pair of left and right first members facing each other in the width direction of the conveyor belt 1, and the other is provided with a second member located between both the first members. A pair of left and right elastic bodies 10 having an axis in the width direction of the belt 1 and swinging the holder 11 by torsional deformation about the axis are interposed between the second member and each first member in a compressed state. mounting, holder 11
The belt cleaner device is characterized in that it is equipped with a chip 12 that is pressed against the return side of the belt 1 by the elastic force generated by the torsional deformation of the elastic body 10 and scrapes off the residue adhering to the surface of the belt 1. 2. One of the support frame 6 and the holder 11 is provided with a pair of left and right first members facing each other in the width direction of the conveyor belt 1, and the other is provided with a second member located between both the first members, and the second member is provided with a second member located between the two first members. A pair of left and right elastic bodies 10 having an axis in the width direction of the belt 1 and swinging the holder 11 by torsional deformation around the axis are interposed in a compressed state between each first member.
The chip 12 is provided with a chip 12 that is pressed against the return side of the belt 1 by the elastic force generated by the torsional deformation of the elastic body 10 and scrapes off the residue attached to the surface of the belt 1. A belt cleaner device comprising a brake means for slowing down the speed.