CN113277284B - Anti-swing deviation method of belt conveyor - Google Patents
Anti-swing deviation method of belt conveyor Download PDFInfo
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- CN113277284B CN113277284B CN202110569542.0A CN202110569542A CN113277284B CN 113277284 B CN113277284 B CN 113277284B CN 202110569542 A CN202110569542 A CN 202110569542A CN 113277284 B CN113277284 B CN 113277284B
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- idler
- adhesive tape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
- B65G39/16—Arrangements of rollers mounted on framework for aligning belts or chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
- B65G15/64—Arrangements for supporting or guiding belts, e.g. by fluid jets for automatically maintaining the position of the belts
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- Engineering & Computer Science (AREA)
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- Control Of Conveyors (AREA)
Abstract
The invention discloses an anti-swing deviation method of a belt conveyor, wherein the belt conveyor at least comprises a rubber belt and a return idler, the rubber belt is formed by connecting sectional rubber belts, the connecting part of the sectional rubber belts is provided with a rubber belt interface, the rubber belt interface is manufactured in a hot vulcanization mode and is connected with the sectional rubber belts, and the method comprises the following steps: 1) defining a hot vulcanization construction area of the adhesive tape interface; 2) an integral platform is adopted to manufacture a hot vulcanization interface of the adhesive tape, and the two subsegment adhesive tapes are arranged on the integral platform; 3) after the interface is manufactured, calibrating and detecting the center line of the adhesive tape interface; after the central line degree of the thermal vulcanization interface is detected to be qualified, the two ends of the adhesive tape are fixed to prevent the adhesive tape from being influenced by external force to cause the deviation of the central line. The invention solves the swing deviation phenomenon with extremely low cost, has small change to the prior equipment and strong adaptability, and improves the working effect.
Description
Technical Field
The invention relates to the technical field of building equipment, in particular to a swing deviation preventing method for a belt conveyor.
Background
The belt conveyor is also called as a rubber belt conveyor, is widely applied to various industries, plays an important role in the aspects of assembly, detection, debugging, packaging, transportation and the like of objects, runs at a high speed and stably, has low noise, can be conveyed up and down a slope, has the advantages of strong conveying capacity, long conveying distance, simple structure, easy maintenance, and convenient implementation of programmed control and automatic operation, and is an indispensable economic logistics conveying device for forming a rhythmic assembly line.
The project of the applicant for building the coal storage and transportation yard in the Tangshan Gangjing Tang Gango district is a specialized coal yard project, the project builds 4 yards (2 wide yards and 2 narrow yards) and 3 groups of stacker-reclaimer track foundations, the length of the whole yard reaches 1500 meters in south and north, the length in east and west directions reaches 500 meters, the installation span is large, the process equipment comprises 16 belt conveyors so as to realize the coal conveying functions of a ship loader, a car unloader, a switching machine room and a material yard in a port, wherein the rated conveying capacity of the belt conveyors is 8000 tons/hour, the maximum conveying capacity is 8800 tons/hour, and the first belt conveyor in China breaks through 8000 tons/hour. The conveying line is continuous north and south, the span is 1300 meters, the construction period is short, the workload is large, the construction difficulty is high, and the total length of each belt conveyor belt is more than 2700 meters, the width of each belt conveyor is 2200 millimeters, and the weight of each belt conveyor is close to 200 tons. The serious rubber belt swing deviation condition appears in some belt conveyors in debugging and use stage, leads to whole system unable start or shut down, because system protection time and start-up time are longer, seriously influences the operating efficiency, to equipment life loss. Meanwhile, the swinging and deviation of the rubber belt causes a large amount of materials at the tail part of the conveyor to scatter, the material ratio is influenced, the material loss is increased, the cleaning workload is increased, the rubber belt scrapes a mechanical structure, the rubber belt is damaged, and the service life of the rubber belt is influenced. The phenomenon of swinging deviation of the rubber belt is not reduced by adopting a plurality of traditional ways in the prior art, so that the method for preventing the swinging deviation of the belt conveyor of the ultra-long-distance and ultra-heavy rubber belt is researched and obtained to be particularly important.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for preventing the swinging and the deviation of a belt conveyor.
The complete technical scheme of the invention comprises the following steps:
the utility model provides a method for preventing swing off tracking of belt conveyor, which characterized in that, belt conveyor includes sticky tape and return idler at least, the sticky tape is formed by segmentation sticky tape connection, segmentation sticky tape connecting portion have sticky tape interface, the sticky tape interface adopts the heat vulcanization mode preparation and connects segmentation sticky tape, includes following step:
1) defining a hot vulcanization construction area of the adhesive tape interface, and defining the area by using a warning line to prevent personnel from trampling the adhesive tape near the hot vulcanization interface of the adhesive tape;
2) when the adhesive tape hot vulcanization interface is manufactured, an integral platform is erected on two sides by using a wood material, the surface of the integral platform and the lower surface of the interface are on the same plane, a sizing block is used for leveling and fixing the integral platform, and the two sides of the integral platform are connected and fixed; then, a hot vulcanization process is adopted to manufacture an adhesive tape interface and connect the adhesive tape;
3) calibrating the center line of the adhesive tape interface, specifically setting 3-4 central points on the segmented adhesive tapes at two ends of the interface respectively, wherein the central points are spaced by more than 2 meters, marking the central points by using paint, connecting the central points to form a central line, ensuring that the central line at one end extends by more than 5 meters during construction, and ensuring that the detection distance of the central point at the farthest end of the two ends is more than 10 meters so as to reduce the measurement error, and then detecting the central line at the adhesive tape interface, wherein the deviation rate is required to be not more than 1%;
4) after the central line degree of the thermal vulcanization interface is detected to be qualified, the two ends of the adhesive tape are fixed to prevent the adhesive tape from being influenced by external force to cause the deviation of the central line.
The return idler comprises a first idler set and a second idler set, the first idler set and the second idler set are alternately arranged, the first idler set is a normal straight-line arrangement mode, the second idler set comprises a plurality of idler groups distributed along the conveying direction of the rubber belt, each idler group comprises a left idler and a right idler which are symmetrically distributed along the conveying direction of the rubber belt, the axial directions of the left idler and the right idler are 74 degrees in the transverse direction (namely the horizontal direction) and the conveying direction of the idler, the axial directions of the left idler and the right idler are 6 degrees in the longitudinal direction (namely the vertical direction) and the horizontal direction.
The number of groups of the second carrier roller group, the length of each group and the spacing distance between the groups adopt the following relations: L-7.3N L2. Wherein L is the total length of the adhesive tape, N is the number of the second carrier roller group, L2The length of each second set of idler rollers. The value range of L is 2500-300 m, the value range of N is 6-12, and the spacing distance between every two second carrier roller sets is L22.6-3.5 times to ensure proper deviation correcting distance.
According to the invention, through actual work, aiming at the swing deviation phenomenon of the belt conveyor of the ultra-long distance and ultra-heavy rubber belt, the main factors influencing the swing deviation are firstly found and mainly exist in the tail end return rubber belt and the tail roller part. Meanwhile, aiming at the problems, the interface hot vulcanization process is adopted in a targeted manner, and the deviation problem caused by the tail roller is solved by adopting a return carrier roller design mode. The swing deviation phenomenon is solved with minimum cost, the change to the existing equipment is small, the adaptability is strong, and the working effect is improved.
Drawings
Fig. 1(a) and 1(b) are field diagrams of the belt conveyor of the present invention.
Fig. 2(a) is a schematic diagram of the detection position of the tail roller of the present invention, and fig. 2(b) is a schematic diagram of the size and position of the tail direction-changing roller and the tape.
Fig. 3 is a schematic view of an apparatus for preparing a tape joint by a thermal vulcanization process.
Fig. 4 is a schematic top view of a second idler set of the return idler of the present invention.
Detailed Description
The technical solutions of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it is obvious that the described embodiments are only illustrative and are not intended to limit the present application.
Firstly, the background of the swing deviation preventing method of the belt conveyor is introduced.
The process equipment in the coal storage and transportation yard engineering of the Jing Tang hong Ganggang, Tang shan Ganggang, Jing Tang Gangdistrict comprises 16 strip type conveyors in total to realize the coal conveying functions of a ship loader, a car unloader, a switching machine room and a material yard in the port, wherein the rated conveying capacity of the strip type conveyor is 8000 tons/hour, and the maximum conveying capacity is 8800 tons/hour, which is the first belt conveyor in China breaking 8000 tons/hour and is the largest in China. The specific parameters of the belt conveyor can be seen in the following table:
equipment parameter table
The belt conveyor BDQ7-1/BDQ7-2/BDQ8-1/BDQ8-2/BDQ9-1/BDQ9-2 has conveying lengths exceeding 1300 m, is matched with a bucket-wheel stacker-reclaimer to realize material transfer and transportation, and forms one of the largest domestic belt conveyors.
As shown in FIG. 1a and FIG. 1b, the belt conveyor number BH5-1/BH5-2/BDQ7-1/BDQ7-2/BJ4-1/BJ4-2 is installed as the first stage of the engineering, the workload is large, the installation difficulty is large, and the installation period is short. The condition of the swinging deviation of the adhesive tape is serious in the debugging and using stages of BDQ7-1/BDQ7-2 (equipment marked with dust in an equipment parameter table), and the phenomenon of the swinging deviation of the adhesive tape is not reduced by adjusting in a conventional mode for many times. After statistics is carried out on deviation data (partial statistical results are shown in the table), the fact that the swing deviation amplitude of the belt conveyor is large is found, a general system protects a deviation switch, deviation early warning is about 4% of one side, and deviation protection is about 5% of one side. The belt conveyor can not realize rated operation capacity and the operation efficiency is seriously influenced.
Therefore, the analysis and research of the project group of Jingtang gang of Minnan construction aims at finding the problem of swinging and deviation of the BDQ7-1/BDQ7-2 adhesive tape, solving the problem and improving the installation and debugging quality of the BDQ8-1/BDQ8-2/BDQ9-1/BDQ9-2 and other belt conveyors in the second and third stages of the project.
The inventor of the application aims at the phenomenon of swinging and deviation of the adhesive tape, and by observing and analyzing the reason according to the field, the schematic diagram of the detection position of the tail roller is shown in fig. 2(a), and the schematic diagram of the size and the position of the tail bend roller and the adhesive tape is shown in fig. 2 (b). In combination with the above detection, the swing deviation mainly exists in the tail end return belt and the tail roller part.
In order to solve the problems, the invention provides a method for preventing the swing deviation of a belt conveyor, which comprises the following steps:
(1) adhesive tape joint vulcanization process design
The lengths of the BDQ7-1/BDQ7-2 adhesive tapes are 2751 meters and 2766 meters respectively. The total length of the adhesive tape of each device of the BDQ-numbered belt conveyor exceeds 2700 m, the width of the adhesive tape is 2200 mm, and the weight of the adhesive tape is close to 200 tons. Because the length of the adhesive tape is long, each equipment adhesive tape is divided into 6 sections of transportation sites, the number of the BDQ tape type conveying adhesive tape interfaces is large, the number of the adhesive tape interfaces of each equipment is 6, in the process of manufacturing and connecting the adhesive tape interfaces on site, external influence factors are too large, the adhesive tape is butted to complete the erection of an integral platform on two sides of the adhesive tape heat vulcanization interfaces, the platform is erected by using a wood material, the surface of the integral platform and the surface of a lower hot plate of an interface flat plate are on the same plane, a sizing block is used for leveling and fixing, and the two sides are fixedly connected and fixed. After the center line of the adhesive tape interface is placed and the detection of the center line of the hot vulcanization interface is qualified, the two ends are fixed, so that the adhesive tape is prevented from being influenced by external force to cause the center line to deviate. Therefore, in order to solve the above problems, the design method of the tape joint vulcanization process includes:
1) and (4) defining a hot vulcanization construction area of the adhesive tape interface, defining the area by using a warning line, and arranging a specially-assigned person for monitoring. Personnel entering and exiting are reduced, the rubber belt near the rubber belt heat vulcanization interface is prevented from being trampled, and the environment required in the manufacturing process of the rubber belt interface is ensured;
2) when the adhesive tape heat vulcanization interface is manufactured, an integral platform is erected on two sides by using a wood material, as shown in fig. 3, the surface of the integral platform and the lower surface of the interface are on the same plane, and the integral platform is leveled and fixed by using a sizing block, so that the two sides of the integral platform are connected and fixed; then, a hot vulcanization process is adopted to manufacture an adhesive tape interface and connect the adhesive tape;
3) then calibrating the center line of the adhesive tape interface, specifically setting 3-4 center points on the adhesive tape at one end of the interface, wherein the center points are spaced by more than 2 meters, marking by using paint, connecting the center points to form a center line, ensuring that the center line at one end extends by more than 5 meters during construction, and ensuring that the detection distance of the far points at two ends is lengthened to more than 10 meters so as to reduce the measurement error, and then detecting the center line of the adhesive tape interface, wherein the deviation rate is required to be not more than 1%;
4) after the hot vulcanization interface central line degree detection is finished and qualified, the two ends of the adhesive tape are fixed to prevent the adhesive tape from being influenced by external force to cause the deviation of the central line.
(2) Return idler set design
Aiming at the problem of deviation caused by a tail roller, the invention improves the deviation problem by adopting a return idler designing mode, the central axis of the return idler of the traditional belt conveyor is horizontally arranged and is arranged in a straight line shape, namely the central axis of the idler is vertical to the conveying direction of a rubber belt in the horizontal plane direction, researches show that the idler group in the arrangement mode only has longitudinal supporting force on the rubber belt in the return process, and the inventor discovers that certain correcting force needs to be exerted in the transverse direction to prevent the rubber belt from swinging and deviating through analysis, so that the invention carries out new design on the return idler group.
The return idler generally includes a first idler set and a second idler set. Wherein first bearing roller group is normal style of calligraphy mode of arranging, and the second bearing roller group includes a plurality of bearing roller small group that distributes along sticky tape direction of delivery, and every bearing roller small group includes along left bearing roller and the right bearing roller of sticky tape direction of delivery bilateral symmetry distribution, and the axis direction of controlling the bearing roller is 74 with bearing roller direction of delivery's contained angle in horizontal (being the horizontal direction), and the axis direction of controlling the bearing roller is 6 with the contained angle of horizontal direction in vertical (being the vertical direction).
The basic principle of the invention is as shown in fig. 4, the second carrier roller set is designed in such a way that in the horizontal plane direction, the stress of the rubber belt depends on the stress area of the rubber belt and the carrier rollers in the conveying process of the return carrier roller, and the carrier roller on the side with large contact area generates larger stress of the rubber belt than the side with small contact area, so as to adjust the deviation of the rubber belt. When the adhesive tape deviates to the left side, the stress area of the left carrier roller is larger than that of the right carrier roller, and the lateral force Fy1 generated by the left carrier roller is larger than the lateral force Fy2 generated by the right carrier roller, so that the adhesive tape is adjusted to the right side by the generated lateral force Fy. When the adhesive tape deviates to the right side, the stress area of the right carrier roller is larger than that of the left carrier roller, and the lateral force Fy1 generated by the right carrier roller is larger than the lateral force Fy2 generated by the side carrier roller, so that the lateral force Fy is generated to enable the adhesive tape to be adjusted to the left side. Through the adjusting mode similar to the V shape, the swinging deviation of the rubber belt is automatically adjusted, and the swinging amplitude of the rubber belt is reduced. The included angle between the second carrier roller group and the horizontal plane direction in the longitudinal direction (namely the vertical direction) is designed to increase the lateral force of two sides, and the horizontal and longitudinal included angles are selected after calculation in consideration of the force and construction difficulty required in the actual construction process.
Considering that the output power of a power motor of the belt conveyor is a fixed value, the return carrier roller group is adjusted to generate power loss and increase the load of the motor, so that the design mode that the second carrier roller group is adopted in the whole process of the return carrier roller is unrealistic, and meanwhile, the swing deviation conditions of each belt conveyor are different, so that the reasonable arrangement mode of the first carrier roller group and the second carrier roller group is necessary to be researched, the power loss is reduced while the deviation is prevented, and the load of the motor is reduced. After research and test, the adjustment number of each belt conveyor is determined, and under the condition that the transverse selection included angle of the second carrier roller group is 74 degrees and the longitudinal selection included angle is 6 degrees, repeated calculation and running debugging are carried out, so that the following relation is obtained: L-7.3N L2. Wherein L is the total length of the adhesive tape, N is the number of the second carrier roller group, L2The length of each second set of idler rollers. In the engineering, the value range of L is 2500-3000 m, N is selected according to the terrain condition and the value of L, the upper limit is not more than 12 generally, the lower limit is not less than 6 groups, and after L and N are determined, the extension length L of each group of second carrier roller groups is obtained through calculation2. Meanwhile, the distance between every two second carrier roller sets is designed to be 2.6-3.5 times of L2To ensure proper deviation correcting distance.
The improved results show that: after the BDQ7-1/BDQ7-2 is rectified and improved by adopting the technical scheme, the technical scheme is simultaneously adopted and implemented in the installation process of the belt conveyors such as BDQ8-1/BDQ8-2/BDQ9-1/BDQ9-2 in the later construction, so that the phenomenon of swinging and deviation of the belt conveyors is successfully eliminated. The specific achievements are detailed in the following table:
the statistics of the quality improvement degree of the adhesive tape heat vulcanization interface are as follows:
except for the return idler structure and the adhesive tape interface manufacturing method, other components of the belt conveyor, such as a roller set, a motor, a speed reducer, a mechanical coupling, a driving device base and other driving devices, a disc brake, a backstop, a material guide chute, a sweeper, a middle frame, a supporting leg, a roller support, a material receiving plate, a safety protection cover, a guardrail and other steel structural components, adopt conventional components in the prior art, and are not described again.
The above applications are only some embodiments of the present application. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the invention.
Claims (1)
1. The utility model provides a method for preventing swing off tracking of belt conveyor, which characterized in that, belt conveyor includes sticky tape and return idler at least, the sticky tape is formed by segmentation sticky tape connection, segmentation sticky tape connecting portion have sticky tape interface, the sticky tape interface adopts the heat vulcanization mode preparation and connects segmentation sticky tape, includes following step:
1) defining a hot vulcanization construction area of the adhesive tape interface, and defining the area by using a warning line to prevent personnel from trampling the adhesive tape near the hot vulcanization interface of the adhesive tape;
2) when the adhesive tape hot vulcanization interface is manufactured, an integral platform is erected on two sides by using a wood material, the surface of the integral platform and the lower surface of the interface are on the same plane, a sizing block is used for leveling and fixing the integral platform, and the two sides of the integral platform are connected and fixed; then, a hot vulcanization process is adopted to manufacture an adhesive tape interface and connect the adhesive tape;
3) calibrating the center line of the adhesive tape interface, specifically setting 3-4 central points on the segmented adhesive tapes at two ends of the interface respectively, wherein the central points are spaced by more than 2 meters, marking the central points by using paint, connecting the central points to form a central line, ensuring that the central line at one end extends by more than 5 meters during construction, and ensuring that the detection distance of the central point at the farthest end of the two ends is more than 10 meters so as to reduce the measurement error, and then detecting the central line at the adhesive tape interface, wherein the deviation rate is required to be not more than 1%;
4) after the central line degree of the thermal vulcanization interface is detected to be qualified, fixing two ends of the adhesive tape to prevent the adhesive tape from being influenced by external force to cause the deviation of the central line;
the return idler comprises a first idler set and a second idler set, the first idler set and the second idler set are alternately arranged, the first idler set is in a normal straight-line arrangement mode, the second idler set comprises a plurality of idler groups distributed along the conveying direction of the rubber belt, each idler group comprises a left idler and a right idler which are symmetrically distributed along the conveying direction of the rubber belt, the included angle between the axis direction of the left idler and the axis direction of the right idler and the horizontal conveying direction of the idler is 74 degrees, the included angle between the axis direction of the left idler and the horizontal conveying direction of the right idler is 6 degrees, and the included angle between the axis direction of the left idler and the horizontal conveying direction of the right idler and the horizontal conveying direction of the left idler and the horizontal conveying direction of the right idler is 6 degrees;
the number of groups of the second carrier roller group, the length of each group and the spacing distance between the groups adopt the following relations: l =7.3 × N × L2(ii) a Wherein L is the total length of the adhesive tape, N is the number of the second carrier roller group, L2The length of each second carrier roller group; the value range of L is 2500-300 m, the value range of N is 6-12, and the spacing distance between every two second carrier roller sets is L22.6-3.5 times of the total weight of the powder.
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| CN202110569542.0A CN113277284B (en) | 2021-05-25 | 2021-05-25 | Anti-swing deviation method of belt conveyor |
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| CN113277284B true CN113277284B (en) | 2022-04-05 |
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| CN105757167A (en) * | 2014-12-15 | 2016-07-13 | 重庆市佳佳机械制造有限公司 | Bonding repairing technology for conveyer belt crack |
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| JPS60223715A (en) * | 1985-03-27 | 1985-11-08 | Hitachi Ltd | Carrier roller device |
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| BE1027494B1 (en) * | 2019-08-12 | 2021-03-16 | Clean Conveyor Belt BVBA | Conveyor belt with upright ribs |
| CN212251967U (en) * | 2020-06-06 | 2020-12-29 | 济南建设设备安装有限责任公司 | Support arrangement for construction machinery uses |
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|---|---|---|---|---|
| JPH07257727A (en) * | 1994-03-22 | 1995-10-09 | Ishikawajima Harima Heavy Ind Co Ltd | Roller supporting frame for belt conveyor |
| CN201434048Y (en) * | 2009-05-12 | 2010-03-31 | 山东安能输送带橡胶有限公司 | A jointing size for steel-cord rubber belt |
| CN102213294A (en) * | 2011-06-10 | 2011-10-12 | 山西太钢不锈钢股份有限公司 | Cold vulcanization connecting method of conveying belt |
| CN103204362A (en) * | 2013-04-24 | 2013-07-17 | 上海隧道工程股份有限公司 | Belt conveyer |
| CN105757167A (en) * | 2014-12-15 | 2016-07-13 | 重庆市佳佳机械制造有限公司 | Bonding repairing technology for conveyer belt crack |
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