KR101108505B1 - Method of manufacturing skirting belt for conveying raw materials and self-aligning skirting device for conveyor belt using the skirt - Google Patents

Abstract

The present invention relates to a method for manufacturing a skirt installed on a conveyor belt for transferring a large amount of powder or granular raw materials to a processing unit, such as steel mills, thermal power plants, chemical plants, food industry, and the like. The present invention also provides a self-aligning skirt device equipped with a skirt thus manufactured.

In steel mills, thermal power plants, and the food industry, various raw materials such as coal, iron ore, flour, and corn are transported by a continuous conveyor belt to be delivered to the final destination.

During the transfer supply, raw materials containing a large amount of dust not only generate a large amount of dust during transportation, but also some materials fall out of the conveyor belt during transfer as the raw materials are not evenly transferred and eccentric. Falls).

These dust generation and falling off raw materials are not only the loss of raw materials but also extremely pollute the work environment of the site.

In order to solve this problem, rubber is plated on both sides of the conveyor belt to prevent the separation. The plate-like structure of such a rubber material is referred to collectively as a skirt, and may be installed in multiple structures, or in part in a corrugated form.

The critical disadvantage of this skirting device is that the conveyor belt continuously conveys and the skirt end of the rubber material is in contact, and the contact surface is in close contact with the surface of the conveyor belt in order to maintain the airtightness to prevent departure from the outside. Worn out.

Not only the wear part is not uniform, but also the wear part is exposed and dust and particles are released to it, which wastes a lot of time and money by replacing and repairing the skirt at regular intervals.

The present invention was developed by mixing a rubber material in contact with the conveyor belt with the least friction force and at the same time mixing a new rubber, natural fiber yarn, synthetic fiber and synthetic resin with a low wear rate by contact friction to develop a skirt of a new characteristic.

In addition, the conveyor belt installation device of the skirt also developed the self-aligning device that automatically adjusts the contact between the conveyor belt and the skirt with low friction while applying the optimum pressure to maintain the airtightness with the conveyor belt.

Therefore, the durability and frictional resistance of the skirt material is greatly increased, and the wear caused by the contact with the conveyor belt is minimized, so that it can be used for a long time compared with the conventional skirt device.

Conveyor Belt, Steel, Thermal Power, Mineral, Skirt, Rockfall

Description

A process for manufacturing the skirt for the conveyor belt and its skirt self-adjusting system using its skirt}

The present invention relates to a method for manufacturing a skirt for a conveyor belt that enables efficient transport of raw minerals in the form of powder or particles to steel mills, thermal power plants, various chemical plant facilities, grain transfer lines, and a conveyor belt device equipped with the skirt. It is about.

Raw minerals supplied to steel mills, thermal power plants, chemical plants, etc., are granular or powdery. These particulate or powdery raw minerals are continuously supplied to the apparatus to be processed by the conveyor belt.

It is very difficult to guarantee the accurate and consistent operation of the conveyor belt because of the wide variety of raw materials transported on the conveyor belt, and the structure, shape, size, and hardness are different.

In places such as steel mills and thermal power plants, belt conveyors are installed outdoors, and the transfer of belt conveyors through the chute is uniform, but the raw material falls to the lower transfer belt while hitting the left, right, front, and rear sides of the chute wall. Has unique features.

If you look at its features

1) The amount of transfer is irregular at the moment.

2) The size and shape are not constant.

3) The falling point is not constant.

4) The drop height also varies by suit.

5) The organization of raw materials varies greatly according to the change of weather (humidity).

Therefore, there is a problem that it is not easy to find a regular average point because the properties of the raw material falling to the conveying belt through the chute.

Conveyor belts also went through various features as follows.

1) The length and width are huge.

2) The linear expansion caused by temperature change is severe.

3) Belt meandering or sag phenomenon often occurs due to ulcer wavelength.

4) The damage to the belt is not uniform and wear and change occurs completely differently according to the lower part, center part, left and right part by the chute bar.

As the diversity of the raw material transport material and the characteristics of the conveyor belt are engaged, various problems arise in that the raw material light is not normally transferred.

In order to prevent mineral dropping and scattering of the conveying conveyor belt, a device called a skirt is provided on both sides of the conveyor belt.

As such a skirt device, the most common form is to lower the skirt of the plate-like structure on both sides of the belt conveyor continuously operating as shown in the actual installation picture of FIG. As shown in the actual operation picture, the raw light leaks out to the outside of the skirt, causing serious pollution of the surrounding environment.

In order to make up for the shortcomings of the simple cut-out skirt device, Utility Registration No. 306063 attempts to obtain a more thorough sealing effect by constructing a rubber sealing rubber in a triple structure or in a corrugated form. This attempted to increase the blocking effect to some extent, but when the rubber becomes worn out during use, dust is leaked from the worn part. In this case, the other part should be replaced even if the rubber is not yet replaced.

In the case of Patent No. 212830, in the most severely scattered chute part, a part of the conveyor belt is installed by inserting a belt insertion part so that the part is heavily impregnated than other parts to prevent scattering. Although the effect on the chute part is expected, the fall prevention effect on the entire conveyor belt is not expected.

In addition, by pressing elastically on the top of the skirting device with an elastic spring, when worn out, there is also a method in which the conveyor belt and the skirt end are in close contact with each other by pushing with spring tension. This method is effective at first, but after prolonged use, the contact with the conveyor belt is severely rubbed and wear is inevitable. Without knowing the degree of wear, the conveyor belts can be severely worn out and cause serious problems when left unattended. Therefore, it is difficult to anticipate and replace such wear in the field, which causes a lot of inconvenience.

There is a cut-off padding type skirt using EPDM rubber of Martin of USA, but it is not suitable for the transfer of raw minerals and coke, etc., and is suitable for grain transfer line or coal-fired power plant. In the case of the Mexican Pozania thermal power plant, some of the above-described skirts are used, which limits their use and function.

The present invention is to develop a new skirt material and a device that can be restrained as much as possible without leaving the conveyor belt even if the conveyor belt and the skirt is continuously friction with the conveyor belt.

The present invention is to develop a structure that can be carefully adjusted according to the degree of damage automatically even without a device for complex damage compensation, even if the skirt is a contact belt and the conveyor belt contact to maintain the contact state of the skirt and the belt conveyor at all times do.

The present invention is to develop a device that can avoid the damage of the skirting device without damaging the conveyor belt or skirt even if a sudden fall occurs.

The present invention also provides a skirt device that can be easily replaced and repaired even if damage occurs.

An object of the present invention is to provide a skirting device capable of essentially absorbing and removing a sag phenomenon that causes severe phenomena while changing characteristics of raw materials falling from the chute and simultaneously changing the conveyor belt.

It is also an object of the present invention to provide a skirting device in which the conveyor belt does not partially snap between the skirt and the belt during operation.

The present invention is a porous synthetic rubber plate having a skeletal structure of the skirt material in contact with the conveyor belt has the advantages of both of the lowest thermal deformation and excellent porosity of natural fibers and synthetic fibers having excellent abrasion resistance, heat resistance and lubricity. Was prepared.

The present invention also has a high elasticity and excellent lubrication and durability rubber and resin blended after curing to significantly improve the durability.

In the present invention, the skirt material in contact with the conveyor belt is mixed with natural fibers and synthetic fibers, and the appropriate rubber and resin are mixed therewith to cure and secure pores and lubricity.

The present invention has developed a device that can automatically adjust the center of the conveyor belt in the center belt (meandering phenomenon), falling light generation and uneven wear of the skirt device in the installation of the skirt.

In the case of claim 1, the porosity can be configured as desired due to the mixing of the natural fiber yarn and the synthetic fiber yarn, and excellent skirt having proper durability, weather resistance, and lubricity depending on the material of the conveying conveyor to be installed with appropriate porosity control. Was developed.

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In the case of claim 2, the partial exposure of the fiber yarn inside the distal end prevents direct impact from being applied to the skirt body, and at the same time prevents excessive heat generation by the lubricant infiltrated into the fiber yarn, thereby increasing durability. give.

In the case of claim 3, the skirt device employing the skirt having almost no porosity and thermal deterioration absorbs sufficient shock even during the operation of the irregular conveyor belt, thereby minimizing the damage of the fall or the conveyor belt.

In the case of claim 4, the spring pressure or the pneumatic cylinder, as before, the skirt does not always press the conveyor belt at all, and automatically lifts and lowers from the left and right of the conveyor belt to prevent falling of rain or dirt. To give.

Claim 5 is to absorb by the impact roller having irregularities when the raw light is supplied dropping to absorb the impact applied to the skirt and the like adjacent to the pad portion.

Claim 6 makes it possible to transport the appropriate raw light by adjusting at various angles according to the type of raw light or the speed of the conveyor belt.

The present invention prepared a basic skirt plate by mixing natural fiber yarns with high porosity and heat resistant natural fiber yarns and chemical fiber yarns having high adhesiveness and fine structure with weather resistance resistant to chemical impact. .

The present invention is to strengthen the basic plate having an appropriate porosity, heat resistance and weather resistance with an adhesive, and then filled the rubber between the plates with a hard material to give elasticity.

The present invention also has an end directly in contact with the conveyor belt, so that a portion of the fiber is exposed. Exposure of these fibers allowed direct shock absorption.

Hereinafter, the exemplary embodiments of the present invention will be described in detail.

The present invention is a fiber plate body forming step of homogeneously mixing 10 to 20% by weight of natural fiber yarn and 80 to 90% by weight of synthetic fiber yarn, filling the homogeneous mixture into a mold of a plate-like body,

A pressure forming step of immersing the molded fiber board body in an adhesive solution, drying it so as not to be buried when it is dried, and pressing it at a pressure of 2000 to 3500 kg / m 2,

Curing the press-molded fiberboard body at 110 to 140 ° C. for 5 to 7 hours,

Impregnating a rubber resin mixture solution in which the rubber and synthetic resin are mixed in a ratio of 5 to 5 to 7 to 3 based on the volume of the cured porous fiber board body;

Drying the impregnated to dryness in the drying net so as not to be buried, and then hardening for 5 to 7 hours at a temperature of 110 to 140 ° C,

The cured process was cut into a quadrangular plate-shaped body, and then impact-treated to partially expose the fiber at the end, thereby manufacturing a skirt for a conveyor belt for raw material conveying, which is configured as an end softening step.

In the present invention, after the fiber board body forming step, the fiber yarn is dispersed in the air, and at the same time, the process of diffusing and dispersing the surface of the fiber yarn spreading the adhesive by the nozzle and repeating the lamination in the mold to form a fiber plate body having a certain thickness It is also possible.

In the present invention, the natural fiber yarn is composed of any one of hemp, manila, cocoa fibers. Such natural fiber yarns are thicker than natural fiber yarns and hardly deformable even when heated. Therefore, these fiber yarns prevent the deformation of heat applied from the outside. Another feature of the present invention is to treat natural fiber yarns such as coconut, manila, hemp fibers by cold plasma or autoclave. Pretreatment with such a cold plasma or autoclave results in ablation, partial crosslinking or surface activation of the surfaces of these fibers. This surface denaturation changes the water permeation properties. Helium gas used in cold plasma produces radicals on the surface of natural fibers that can cause bonding reactions with unsaturated polyester chains and reduces impurities such as wax on the surface of the fibers. It is being analyzed. This change in the chemical properties of the fiber surface makes the bond with the resins and rubbers added afterwards more densely stable.

If it is used less than 10% by weight, it is difficult to secure heat resistance or framework structure, especially porosity, and if more than 20% by weight is added, porosity is improved and thermal deformation is lowered, but on the contrary, the structure of the plate is weakened and is easily broken. . In the same way, when the synthetic fiber yarn is added lower than 80% by weight, the adhesion between the natural fiber yarn and the synthetic fiber yarn is lowered. When the synthetic fiber yarn is added more than 90% by weight, it has a dense structure, while the porosity is low and the thermal deformation is increased, so that it can be used for a long time. There is a risk of severe deformation.

Manila fibers, hemp, and coconut fiber yarns used in the present invention are suitably 15 to 20 denier in size, and have a porosity of 20 to 40% inside. On the other hand, synthetic fiber yarns have a dense structure and have a thickness of 7 to 8 denier and a porosity of 30 to 40% less than those of the natural fiber yarns. As natural fiber yarn and synthetic fiber yarn are blended, the total porosity of natural fiber yarn and the porosity of synthetic fiber yarn and the space formed by the space formed between these fibers and the fiber yarn are combined to achieve a porosity of at least 10% or more but not more than 30%. Internal configuration.

The present invention also used a mixture of synthetic fiber yarns to reinforce the disadvantages of the natural fiber yarns described above. Synthetic fiber which can be used in the present invention is any one of polyamide synthetic fiber, polyester synthetic fiber, polyester fiber, polyacrylic synthetic fiber, polyurethane fiber, polyvinyl alcohol-based synthetic fiber, polyvinyl chloride-based synthetic fiber These mixed fiber yarns are used.

In the present invention, a natural fiber yarn and a synthetic fiber yarn are mixed to be molded into a predetermined shape and an adhesive is applied to the surface of the fiber yarn. Adhesives usable in the present invention include thermosetting or vinyl acetate such as phenol, polyurethane, epoxy, polyvinyl acetal, urea resin or cocondensation resin of urea and melamine, melamine, polyurethane, varnish, acrylates of acrylic acid and methacrylic acid Any one of them or a mixture thereof. The application of the adhesive allows the adhesive to be uniformly applied to the surface by laminating the natural and synthetic fibers in the mold while spraying the adhesive, or to immerse the uniformly laminated fibers in the adhesive solution for 10 to 30 seconds. . When the adhesive was applied in this way, it was dried to the point of dry contact and then compressed at a pressure of 2000 to 3500 kg / m 2. When pressed smaller than 2000㎏ / ㎡, the porosity is too high, resulting in overcharging of rubber material.When pressing higher than 3500㎏ / ㎡, the airtightness is high and the strength is increased, but the porosity is lowered. Falls.

The crimped and dried fiber boards are immersed in a rubber resin solution mixed with rubber and synthetic resin in a ratio of 6 to 4 to 7 to 3 by weight ratio, and then dried to a degree not to be buried in a dry touch, and then to 110 to Curing is carried out at a temperature of 140 ° C. for 5 to 7 hours.

The rubber that can be used in the present invention, in addition to simple natural rubber, SBR (styrene butadiene rubber), CR (chloroprene rubber), IIR (butyl rubber), EPDM, IR (isoprene rubber), BR (butadiene rubber), CSM (chlorosulfonated Any one or a mixture of polyethylene), urethane rubber, EVA, EPDM (ethylene propylene diene copolymer), and EPT (ethylene propylene copolymer) can be employed.

The thermosetting resins usable in the present invention may be selected from phenol resins, unsaturated polyesters, furan resins, urea resins, melamine resins, diaryl phthalate resins, epoxy resins, fluorine resins, polyimide resins or mixtures thereof. . The ratio of resin to rubber is 0.1 ~ 1.5: 1, and the ratio of resin and rubber is appropriate according to the required use.The higher the strength of the resin, the lower the rubber compounding ratio and the less elasticity. Strength is characterized by strengthening.

This curing process has a pore ratio of 10 to 30% inside due to the porosity of the natural fiber yarn itself and the space generated during adhesion between these fiber yarns. When the pore ratio is less than 10%, the high heat generated at the lower end in contact with the conveyor belt is collected as it is, thereby facilitating wear of the lower end. If the porosity is higher than 30%, it is effective for dissipation of generated heat, but on the contrary, the strength is weak and wear and deformation easily occur. The actual samples of FIGS. 4 and 5 were 20 ± 5 thick, 800 mm long, 170 mm high, and had a density of 237 g / m 3, heat resistance of -20 to 150 ° C., and thermal conductivity of 0.029 to 0.037 μm / mh ° C.

In the final step of the present invention, the lower end of the plate is manufactured as shown in FIGS. . Further, a sharp portion P is formed at the distal end directly in contact with the conveyor belt, and as described above, a part of the fiber yarn is exposed. After the separation of the fiber yarn is impregnated with silicone oil to be absorbed through the pores, this impregnation treatment to give the unique lubricity and wear resistance of the silicone oil. This lubricity and wear resistance reduce friction when in contact with the conveyor belt.

Another feature of the present invention is to provide a skirt device for a new conveyor belt using the skirt.

Specifically, a pair of symmetrical stand frames (1) of a section steel structure is installed along a transport path for transferring raw materials such as minerals, and a pair of carrier pad portions (2) are installed upward along the stand frame. Base part connected between frames,

An impact controller support part 12 is disposed at the center of the upper side of the carrier pad part of the base part so as to freely support both ends of the impact controller 11. An elastic pad 14 is formed on both sides of the impact roller support part. A pad base plate (13) is installed, but the pad base plate is installed so that the pad base plate is rotatable about the pin (21) installed on the impact controller support part,

A transfer unit for installing a conveyor belt 100 having an endless track shape above the pad 14 of the pad base plate 13 of the impact absorption gap adjustment unit to transfer raw materials;

Assembling the skirt on the support 40, which is fastened to the lower side on the outer side of the stand frame 1 of the base part and protrudes vertically, and an extension part 41 extending horizontally from the upper end of the support toward the conveying part. Skirt vertical support portion, to which the portion 30 is assembled,

The fastening hole 51 of the adjusting part 51 is fastened to the play adjustment hole 42 in the extension part 41 of the said skirt vertical support part, and the skirt holder 60 is fastened to the front end part, This skirt holder assembled the skirt for the conveyer belt for raw material conveyance in which the skirt manufactured by the process of this invention mentioned above is assembled.

In the present invention, the self-assessment hole 31 is installed in the skirt assembly 30, so that the hook 32 of the skirt is placed in the auto-assembly hole. This self-aligning hole is to raise the skirt in the projection when the skirt (S) is in contact with the irregular surface of the conveyor belt contacted, and to lower if there is a groove. Therefore, the lifting and lowering control can be freely performed without the complicated device for lifting and lowering the skirt by the complicated spring device or the hydraulic cylinder.

As another feature of the present invention, a separate leak-proof skirt is placed at an adjacent portion of the chute part 500 for injecting the raw material into the upper portion of the conveyor belt, that is, the conveyor belt receives the raw material and starts the rotation of the conveyor belt. To install.

Specifically, as shown in FIG. 12, a block skirt 105 having a half-moon-shaped structure is installed vertically toward the conveyor belt at the lower conveyor belt start portion 101 of the chute 500, and the lower end of the block skirt is a conveyor. Place it in contact with the top of the belt. The block skirt 105 is fixed by a cross member 104, the upper end of which is installed to span the conveyor belt laterally. In addition, an additional second self-aligning hole 103 is installed in the cross member 104 so that the second self-aligning hole hangs over the second hook 106 supporting the upper end of the block skirt. By this structure, the block skirt as shown in the arrow (A) to be interlocked in accordance with the flow direction of the conveyor belt. Due to this linkage, a large amount of raw material is suddenly introduced from the chute and serves as a block in case of being pushed to it.

1 is a photograph of the installation state of the skirt device for a conventional conveyor belt,

2 is a flowchart of a skirt manufacturing process of the present invention;

3 is a conceptual diagram of a skirt manufacturing process of the present invention,

Figure 4 is a perspective photograph seen from the side of the actual skirt of the present invention,

5 is a perspective view seen from the plane of the actual skirt of the present invention,

Figure 6 is a side configuration view of a state installed on the conveyor belt of the present invention,

7 is a front configuration diagram of a state installed on the conveyor belt of the present invention,

8 is a front view of the installed impact controller of the present invention;

9 is a plan view of the installed impact controller of the present invention;

10 is a magnified plan view of a sharp portion of an actual skirt of the present invention;

11 is an enlarged elevation view of a sharp part of a practical skirt of the present invention;

12 is a front sectional configuration view of a block skirt installation state of the present invention;

Figure 13 is a side configuration diagram of a block skirt installation state of the present invention.

Claims (8)

Homogeneous mixing of 10 to 20% by weight of natural fiber yarn and 80 to 90% by weight of synthetic fiber yarn, and filling the homogeneous mixture into a mold made of a plate body to compress the fiber plate body, A pressure forming step of immersing the molded fiber board body in an adhesive solution, drying it so as not to be buried when it is dried, and pressing it at a pressure of 2000 to 3500 kg / m 2, Curing the press-molded fiberboard body at 110 to 140 ° C. for 5 to 7 hours, Impregnating a rubber resin mixture solution in which the rubber and synthetic resin are mixed in a ratio of 5 to 5 to 7 to 3 based on the volume of the cured porous fiber board body; Drying the impregnated to dryness in the drying net so as not to be buried, and then hardening for 5 to 7 hours at a temperature of 110 to 140 ° C, In the method of manufacturing a skirt for a conveyer belt for raw material conveyance comprising the end-softening step by cutting the hardened thing into a quadrangular plate and then impact-treated to partially expose the fiber of the end, In the fiber plate forming step, the natural fiber yarn is any one or a mixture of manila fiber, coconut fiber and flax fiber, having a diameter of 15 to 20 denier and a porosity of 20 to 40%, Synthetic fiber yarn is any one or a mixture of polyamide synthetic fibers, polyester synthetic fibers, polyester fibers, polyacrylic synthetic fibers, polyurethane fibers, polyvinyl alcohol synthetic fibers, polyvinyl chloride synthetic fibers, 7 to 8 denier diameter and 30-40% less porosity than the natural fiber yarn, Rubber is made of natural rubber, SBR (styrene butadiene rubber), CR (chloroprene rubber), IIR (butyl rubber), EPDM, IR (isoprene rubber), BR (butadiene rubber), CSM (chlorosulfonated polyethylene), urethane rubber, EVA , EPDM (ethylene propylene diene copolymer), EPT (ethylene propylene copolymer) or any mixture thereof, The resin is any one or a mixture of phenol resins, unsaturated polyesters, furan resins, urea resins, melamine resins, diaryl phthalate resins, epoxy resins, fluorine resins and polyimide resins, or a mixture thereof. How to make a skirt. The method of claim 1, Skirt for the conveyor belt after the end softening step has a porosity of 10 to 30%, A method of manufacturing a skirt for a conveyor belt for raw material transport, characterized in that the lower end is impregnated with silicone oil. A pair of symmetrical stand frames (1) are installed symmetrically in pairs along a transport path for transferring raw materials such as minerals, and the carrier pads (2) are connected between the stand frames installed in pairs along the stand frame. Installed base part, An impact controller support part 12 is disposed at the center of the upper side of the carrier pad part of the base part so as to freely support both ends of the impact controller 11. An elastic pad 14 is formed on both sides of the impact roller support part. Shock absorption clearance adjustment unit is installed so that one end is fastened to the angle adjustment unit 15 is installed pad base plate 13 and the other end is fastened to the pin 21, A transfer unit for installing a conveyor belt 100 having an endless track shape above the pad 14 of the pad base plate 13 of the impact absorption gap adjustment unit to transfer raw materials; Assembling the skirt on the support 40, which is fastened to the lower side on the outer side of the stand frame 1 of the base part and protrudes vertically, and an extension part 41 extending horizontally from the upper end of the support toward the conveying part. Skirt vertical support portion, to which the portion 30 is assembled, The fastening hole 51 of the adjusting part 51 is fastened to the play adjustment hole 42 in the extension part 41 of the said skirt vertical support part, and the skirt holder 60 is fastened to the front end part, The skirt holder is a fiber board body forming step of homogeneously mixing 10 to 20% by weight of natural fiber yarn and 80 to 90% by weight of synthetic fiber yarn in the lower part, and filling the homogeneous mixture into a mold made of a plate body, and compressing it. Immersion of the adhesive on the fiberboard, pressurizing at a pressure of 2000 to 3500 kg per m2, curing the compressed molded fiberboard at 110 to 140 ℃ temperature for 5 to 7 hours, the cured porous molding Impregnating the rubber and resin mixture mixed in a volume of 5 to 5 to 7 to 3 around the volume, so that the impregnated is not buried during drying Drying and curing at a temperature of 110 to 140 ° C. for 5 to 7 hours, cutting and curing the cured product into a quadrangular plate body, and then impact-treating the fiber at the end to expose 3 to 10 mm. A self-aligning skirt device for a conveyor belt for raw material conveyance, characterized by assembling a skirt for a conveyor belt for raw material conveyance, wherein the skirt for the conveyor belt for raw material conveyance to be assembled is assembled. The method of claim 3, wherein The self-aligning hole 31 is installed in the skirt assembly 30 of the skirt support, and the hook 32 of the skirt is installed in the self-aligning hole so as to be transported to Shanghai. Self-aligning skirt device. The method of claim 3 In the impact absorption gap control unit, the impact controller 11 is continuously provided with the protrusions 11a and the grooves 11b along the outer circumferential surface, and the protrusions are made of an elastic material. Watch skirt device. The method of claim 3, wherein The pad base plate 13 of the shock absorbing play control unit is rotatably installed around the pin 21, and the front end of the pad base plate is provided with a bent portion 13a having a fastening hole 13b. Self-aligning skirt device for a conveyor belt for raw material transport, characterized in that the assembly can be assembled at any angle to the adjustment hole (15a). The method of claim 3, wherein A block skirt 105 having a half moon-shaped structure is installed vertically toward the conveyor belt at the lower conveyor belt start portion 101 of the chute 500 of the transfer unit, and the lower end of the block skirt is disposed to contact the upper surface of the conveyor belt. The block skirt 105 is fixed by the cross member 104, the upper end of which is installed across the conveyor belt, the cross member 104 is provided with a separate second self-aligning hole 103 Conveyor belt self-aligning skirt device for conveying the raw material, characterized in that the second belt is arranged so as to span the second self-aligning hole through the top of the block skirt 106. delete

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