CN111453336A - Traction system and method for quickly replacing flexible belt of long-distance overhead belt conveyor - Google Patents
Traction system and method for quickly replacing flexible belt of long-distance overhead belt conveyor Download PDFInfo
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- CN111453336A CN111453336A CN202010300955.4A CN202010300955A CN111453336A CN 111453336 A CN111453336 A CN 111453336A CN 202010300955 A CN202010300955 A CN 202010300955A CN 111453336 A CN111453336 A CN 111453336A
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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
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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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Abstract
The invention discloses a traction system and a method for quickly replacing a flexible belt of a long-distance overhead belt conveyor. The centralized turning traction system comprises a horizontal support anti-deflection carrier roller group, a centralized turning carrier roller group, a secondary turning support carrier roller group, a traction loader, a traction steel wire rope at a traction outlet end and a traction steel wire rope at a traction inlet end. According to the requirements of site space, the efficient centering rolling diversion traction in the range of 0-180 degrees leftwards or rightwards during the replacement of the conveying belt can be realized, so that the centering diversion traction of the long-distance overhead belt conveyor belt can be safely, reliably and efficiently completed. The traction system fully utilizes the characteristics of the concentrated steering traction device, the efficiency is improved by more than 5 times compared with the original large-scale crane hoisting traction mode, the limitation of field traction space is effectively overcome, the influence of overlong time consumed by traction of the conveying belt on the replacement and maintenance time of the conveying belt of the belt conveyor is obviously shortened, and the replacement efficiency of the flexible conveying belt of the long-distance overhead belt conveyor is greatly improved.
Description
Technical Field
The invention relates to the technical field of flexible belt conveyors, in particular to a centralized steering traction system for flexible conveyor belt replacement of a long-distance overhead belt conveyor and a traction method thereof.
Background
The belt (conveyer belt) of belt conveyor has the unexpected unusual fish tail of conveyer belt area face or tears the trouble in long-time use, perhaps because conveyer belt working face rubber wearing and tearing to a certain extent, and the steel wire rope appears the corrosion and the fracture phenomenon even and leads to unable normal use. Therefore, to ensure safe and stable operation of the conveyor belt, it must be replaced periodically.
When the belt conveyor line changes the conveyor belt, the generally adopted traction mode of the conveyor belt is different due to the difference of the parameters such as the arrangement of the conveyor frame, the size of the traction field space, the distribution of the directions, the replacement length of the conveyor belt and the like. In the widely used operation sites of belt conveyors in mines, steel mills, ports and the like, the vertical height distance between the mounting positions of most frames and the ground is within 2 meters, and the difficulty of the traction process is low when the conveyor belt of the conveyor is replaced.
And for a long-distance overhead belt conveyor with the vertical distance between the mounting position of the belt conveyor frame and the ground being more than 5 meters and the length being more than 500 meters, the difficulty of the traction process is extremely high when the conveying belt of the conveyor is replaced. For the working condition that the space of the machine head and the machine tail of the conveyor is narrow along the axial direction of the conveyor, the machine head and the machine tail cannot move from the head position to the tail position and enter and exit the conveying belt, and the old conveying belt can only be hung and placed to one side of equipment at a certain proper position in the middle of the belt conveyor by adopting a large crane through multiple hook lifting and placing operations, so that the old conveying belt is slowly pulled to be gradually substituted into a conveyor frame. The traditional traction method of the conveying belt seriously influences the traction efficiency and the operation safety of the conveying belt, and particularly when a plurality of overhead conveyors are arranged in a parallel and concentrated manner, the conventional traction method of the conveying belt crane greatly threatens the personal safety of belt conveyors and maintenance personnel around the conveyors, and the traction efficiency of the conveying belt is low. Meanwhile, in order to ensure the safe operation of the traction operation, the peripheral conveyor must be stopped in the traction process of the conveying belt, so that the production operation of the loading and unloading system is greatly influenced. The existing traction process for replacing the conveying belt is specifically described as follows:
a hoisting and lifting traction method is adopted above a rack, and a large-tonnage double crane is mainly adopted to cooperate with high-altitude traction operation to replace a plurality of large cranes, 1 new belt hoisted into a bundle and 1 old belt hoisted and lifted. The old conveyor belt is pulled out of the conveyor frame by a crane, and simultaneously the old conveyor belt pulls a new conveyor belt into the frame. The main problems that exist are as follows: 1. the large-tonnage belt cannot be lifted to a high position due to the limitations of high-altitude operation, field, lifting space, height, lifting capacity and the like, so that the belt can only be designed into a small bundle package, and the number of vulcanization joints is obviously increased; 2. the one-time traction length of the crane is limited by the hoisting height of the crane, and the one-time traction can only be carried out for 20 meters, so that the traction speed is low, the safety coefficient is low, the maintenance time is obviously prolonged, and the influence on loading and unloading production is large. The research object of the scheme is a conveying belt with the length of 1500 meters in full length, and through statistics, the accumulated time consumed for finishing traction in the original process is 20 hours, so that the production efficiency of an enterprise is seriously influenced. 3. When the conveying belt is replaced between two or more parallel belt conveyors, the normal operation of the adjacent belt conveyors is influenced, a plurality of safety risk factors exist, other operating adjacent belt conveyors are stopped at least at the same time, and the unloading production is seriously influenced.
In view of the above, the present inventors have studied the above problems and invented a safe, efficient and reliable convergence steering system and method for long-distance overhead belt conveyor belt replacement.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a traction system and a traction method for quickly replacing a flexible belt of a long-distance overhead belt conveyor, wherein the traction system and the traction method are improved to be used as a traction end in a replacement process of a conveying belt so as to realize safety, high efficiency and reliability of online replacement of the conveying belt.
A traction system for quickly replacing a flexible belt of a long-distance overhead belt conveyor comprises a horizontal supporting anti-deviation carrier roller group, a centralized deviation carrier roller group, a secondary deviation supporting carrier roller group, a traction loader, a traction steel wire rope at a traction end and a traction steel wire rope at a traction end, wherein the horizontal supporting anti-deviation carrier roller group comprises a horizontal supporting carrier roller and vertical anti-deviation carrier rollers at two sides, a conveying belt is in rolling support through the horizontal supporting carrier roller, and the centralized through the vertical anti-deviation carrier rollers; the bottom horizontal supporting carrier roller comprises a first horizontal roller positioned on an overhead frame, a plurality of middle horizontal rollers and a first turning horizontal roller positioned at a first turning position, and the middle horizontal rollers are arranged at intervals and have a certain height difference so as to continuously reduce the height of an old conveying belt; the central axis of the vertical type convergence turning carrier roller is vertical to the central axis of the first turning horizontal roller; the old conveying belt moves from the bottom horizontal supporting carrier roller to the vertical convergence turning carrier roller in a rolling friction mode, and the first turning in the range of 0-90 degrees can be realized; the secondary turning supporting roller group is arranged on the frame main body through a rolling bearing seat and comprises a secondary turning horizontal supporting roller and a secondary turning vertical roller, the axis of the secondary turning vertical roller is parallel to the axis of the vertical convergence turning roller, and the secondary turning vertical roller and the vertical convergence turning roller are arranged at intervals; the central axis of the secondary turning horizontal supporting carrier roller is perpendicular to the central axis of the secondary turning vertical carrier roller; the secondary turning horizontal supporting carrier roller is connected with the frame main body through an adjustable seat and can be arranged in a rotating mode at a certain angle; when the conveying belt moves from the secondary turning vertical carrier roller to the secondary turning horizontal supporting carrier roller in a rolling friction mode, the secondary turning within the range of 90-180 degrees can be realized; the first end of the traction steel wire rope at the traction end is connected with the first end central traction point of the disconnected old conveyer belt, the second end of the traction steel wire rope at the traction end is connected with the traction loader, the second end central traction point of the disconnected old conveyer belt is connected with the new conveyer belt central traction point through the traction steel wire rope at the traction end, and the new conveyer belt is wound on the support roller.
Preferably, the guide rolling working surface of the vertical in-focus deflecting idler and the central axis of the belt conveyor frame are positioned on the same vertical plane, the axis of the vertical in-focus deflecting idler is vertically arranged and is perpendicular to the axis of the bottom horizontal support idler, the guide rolling working surface of the vertical in-focus deflecting idler is positioned on the upper part of the rolling receiving surface of the bottom horizontal support idler, the part of the guide rolling working surface of the vertical in-focus deflecting idler, which exceeds the horizontal receiving surface of the conveying belt, is higher than the diameter of the contracted section of the flexible conveying belt during traction, and a horizontal back pressure guide idler is additionally arranged at a preset height which is slightly higher than the diameter of the contracted section of the flexible conveying belt, and the horizontal guide idler, the bottom horizontal support idler and the vertical in-focus deflecting idler jointly form first in-focus deflecting traction on the flexible conveying belt.
Preferably, the axis of the horizontal supporting roller and the axis of the bottom horizontal supporting roller are parallel to each other and are both arranged horizontally, and the axis of the vertical anti-deviation roller is arranged vertically.
Preferably, the flexible conveying belt passes through the upper sides of the bottom horizontal supporting carrier roller and the secondary turning horizontal supporting carrier roller, and the flexible conveying belt passes through the same side of the vertical type convergence turning carrier roller and the secondary turning vertical carrier roller.
A traction method of a traction system for quickly replacing a flexible belt of a long-distance overhead belt conveyor comprises the following steps: s1, selecting a traction loader to an optimal position for fixing in the range of 0-180 degrees on both sides of the shaft line of the belt conveyor according to the actual included angle between the field traction channel and the shaft line of the belt conveyor; s2, when the conveyer belt is replaced, the old conveyer belt is disconnected at the position where the new conveyer belt and the old conveyer belt enter and exit the space, the upper cover glue and the lower cover glue are removed at the central part of the traction side of the new conveyer belt and the old conveyer belt, the inner steel wire rope or the fabric core framework is exposed, the double-layer steel clamping plate and the connecting bolt with corresponding sizes are matched to be fixed with the belt, the new conveyer belt and the old conveyer belt are connected through the connecting hole reserved in the clamping plate and the traction steel wire rope at the traction end, and similarly, the central part of the traction end of the old conveyer belt; s3, the traction end traction steel wire rope firstly passes through the horizontal support anti-deviation carrier roller group, completes the first rolling direction change within the range of 0-90 degrees when passing through the convergence direction change carrier roller group, completes the second rolling direction change within the range of 90-180 degrees when passing through the secondary direction change support carrier roller group, and is finally connected with a traction loader; and S4, starting the traction loader, recovering and drawing the old conveying belt, connecting two end faces of the new conveying belt and the old conveying belt, drawing out the old conveying belt, drawing in the new conveying belt, and replacing the conveying belt.
Compared with the prior art, the invention has the following advantages:
1) the convergence turning traction system can reliably realize the stable bearing of the old conveying belt from the high-altitude bearing side of a tail roller (or a head roller) which is convenient for the conveying belt to pass in and out to the ground height space and the horizontal space, so that the conveying belt to be dragged is gently and obliquely transited to the ground from a high belt conveyor frame, and meanwhile, the convergence turning of the conveying belt from the same side of the left side or the right side within the range of 0-180 degrees is successfully realized through the convergence turning carrier roller group and the secondary turning support carrier roller group, so that the ground traction loader is allowed to quickly finish the reliable and quick traction work of the conveying belt within the existing field space range, and the adaptability to the field space is more efficient and flexible;
2) the centralized steering carrier roller group enables the running tracks of the steel wire rope and the conveying belt to be always positioned on the central axis of the frame of the belt conveyor in the traction process, so that the centralized traction effect is effectively realized;
3) according to the requirement of a turning angle, a plurality of secondary turning support carrier roller sets with cylindrical rolling type horizontal support and vertical turning functions are freely configured, so that the function of centralized turning in the same side range of 0-180 degrees left and right of the conveying belt is realized;
4) only 1-2 personnel need just can realize the high-efficient steady of conveyer belt and pull, and the conveyer belt is in the centering effect of pulling in-process simultaneously good, effectively prevents conveyer belt jamming or damage, effectively shortens the time that the conveyer belt was changed, reduces the dismouting process of equipment, reduces intensity of labour, practices thrift the labour.
Drawings
FIG. 1 is a front elevational view of the traction system of the present invention;
FIG. 2 is a top view of the configuration of the traction system of the present invention;
FIG. 3 is a three-dimensional perspective view of a concentrated steering hitch of the hitch system of the present invention;
FIG. 4 is a side view of a converging steering traction device of the traction system of the present invention; and
FIG. 5 is a view of the direction of the convergence turning device A according to the present invention.
Reference numerals:
1. horizontally supporting the anti-deviation carrier roller group; 2. a middle concentrating deflecting carrier roller group; 3. the secondary turning supporting roller group 4 and the traction loader; 5. the drawing end draws the steel wire rope; 6. an old conveyor belt; 7. a tail drum; 8. a new conveyor belt; 9. the traction end is used for traction of a steel wire rope; 10. a belt conveyor; 11. a head roller;
400. a fixed frame; 101. a horizontal support roller; 102. a vertical anti-deviation carrier roller; 201. a vertical convergence deflection carrier roller; 202. a bottom horizontal support roller; 203. a horizontal back-pressure guide carrier roller; 301. a secondary turning vertical carrier roller; 302. secondary turning horizontal supporting carrier roller.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
To further explain the technical solution of the present invention, the present invention is further described below with reference to fig. 1 to 5. The invention provides a concentrated turning traction system for replacing a long-distance overhead flexible conveying belt, which is used as a traction unit in the replacement operation of the flexible conveying belt and comprises a plurality of groups of horizontal supporting deflection-preventing carrier roller groups 1, concentrated turning carrier roller groups 2 and secondary turning supporting carrier roller groups 3, wherein the number of the horizontal supporting deflection-preventing carrier roller groups can be adjusted according to the actual on-site overhead height and horizontal span requirements. When carrying out the conveyer belt and pull the operation, the old conveyer belt 6 of disconnection at first accepts to ground through horizontal support anti-skew bearing roller group 1, and this in-process needs to guarantee that old conveyer belt 6 skew does not appear, specifically arranges the characteristics according to the space, under the prerequisite that satisfies the normal business turn over of conveyer belt, horizontal support anti-skew bearing roller group 1 can be located overhead belt feeder head or afterbody frame.
The centralized deflecting traction device can be arranged at the tail roller 7 or the head roller 11 of the belt conveyor, the invention is specifically explained by taking the example that the centralized deflecting traction device is arranged at the tail roller 7 of the belt conveyor for traction, namely the centralized deflecting traction device is arranged at the right end of figures 1 and 2, the horizontal supporting anti-deflection carrier roller group 1 comprises a group of horizontal supporting carrier rollers 101 and two groups of vertical anti-deflection carrier rollers 102, and the carrier rollers are cylindrical. The horizontal supporting carrier rollers 101 play a necessary rolling supporting and lifting role for the steel wire rope and the conveying belt, and the two groups of vertical anti-deviation carrier rollers 102 limit the conveying belt to roll in the left and right directions of the horizontal supporting carrier rollers 101, so that the conveying belt is ensured to be always positioned in a limited interval range in the traction process; the horizontal supporting anti-deviation carrier roller group 1 is arranged behind a tail roller 7 of the overhead belt conveyor at intervals according to actual conditions on site, and is gradually arranged in horizontal and height spaces according to the space characteristics of site dimensions.
As shown in fig. 1-5, D represents the traction direction of the conveyor belt, the traction turning range is 0-180 degrees, after the conveyor belt transitions from a high position to the ground, the traction direction of the conveyor belt is always consistent with the running direction of the central axis of the belt conveyor frame, at this time, the traction is performed through the concentrated turning carrier roller group 2, the concentrated turning carrier roller group 2 is installed on the fixed frame 400 through rolling bearing seats, and the conveyor belt comprises a group of vertical concentrated turning carrier rollers 201, a group of bottom horizontal supporting carrier rollers 202 and a group of horizontal back pressure guiding carrier rollers 203, which are all cylindrical and are combined with each other for use, so that the old conveyor belt 6 can run along. The rolling guide working surface of the vertical convergence deflection carrier roller 201, namely the rolling guide working surface of the carrier roller barrel skin, is positioned at the upper part of the rolling bearing surface of the bottom horizontal support carrier roller 202, the height part of the rolling guide working surface, which exceeds the horizontal bearing surface of the conveying belt, is larger than the diameter of the contracted section of the flexible conveying belt during traction, and a horizontal back pressure guide carrier roller is additionally arranged at the preset height, which is slightly larger than the diameter of the contracted section of the flexible conveying belt. A primary convergence traction in the range of 0-90 degrees to the flexible conveying belt is formed by a bottom horizontal supporting roller 202 positioned below the flexible conveying belt, a horizontal back pressure guiding roller 203 positioned above the bottom horizontal supporting roller, and a vertical convergence deflection roller 201 vertically arranged with the bottom horizontal supporting roller, wherein the bottom horizontal back pressure guiding roller 203 is positioned above the bottom horizontal supporting roller and the vertical convergence deflection roller 201. Therefore, in the traction process, the traction steel wire rope and the traction belt are always positioned in the central axis track direction of the belt conveyor without deviation.
The bottom horizontal support idler 202 includes a first horizontal roller on the overhead, a plurality of intermediate horizontal rollers spaced apart from each other and having a height difference therebetween to continuously lower the height of the old conveyor belt, and a first direction-changing horizontal roller at a first direction change. The outer surface of the vertical type convergence turning carrier roller 201 is not in contact with the outer surface of the bottom horizontal supporting carrier roller 202 and is separated from the outer surface of the bottom horizontal supporting carrier roller 202 by a certain distance, the axial lines of the vertical type convergence turning carrier roller 201, the bottom horizontal supporting carrier roller 202 and the horizontal back pressure guiding carrier roller 203 are positioned on a plane perpendicular to the central axis of the belt conveyor, and the outer contour line of the vertical type convergence turning carrier roller 201 is coincident with the central axis of a frame of the belt conveyor.
As shown in fig. 1 to 5, the second end of the traction steel wire rope 5 at the traction end is connected with the traction loader 4, the first end of the traction steel wire rope 5 at the traction end is connected with the first end of the disconnected old conveyor belt 6, point M is a connection point between the traction steel wire rope 5 at the traction end and the old conveyor belt 6, the second end of the disconnected old conveyor belt 6 is connected with the new conveyor belt 8 through the traction steel wire rope 9 at the traction end, and the traction steel wire rope 9 at the traction end is wound on the drum fixed on the bottom surface. The axis of the horizontal supporting carrier roller 101 is horizontally arranged and is vertical to the axis of a rack of a belt conveyor, the axis of the vertical deviation-preventing carrier roller 102 is vertically arranged and is vertical to the axis of the horizontal supporting carrier roller 101, the axis of the bottom horizontal supporting carrier roller 202 and the axis of the horizontal back-pressure guiding carrier roller are horizontally arranged and are parallel to each other, the conveying belt is positioned on the upper sides of the bottom horizontal supporting carrier roller 202 and the secondary deviation-changing horizontal supporting carrier roller 302, and the conveying belt passes through the same sides of the vertical deviation-changing carrier roller 201 and the secondary deviation-changing vertical carrier roller 301.
The vertical type convergence deflection carrier roller 201 is vertically arranged at 90 degrees with the bottom horizontal supporting carrier roller 202 and the horizontal back pressure guiding carrier roller 203, and the traction steel wire rope and the flexible conveying belt are in rolling contact with the vertical type convergence deflection carrier roller 201, the bottom horizontal supporting carrier roller 202 and the horizontal back pressure guiding carrier roller 203. When the conveying belt penetrates out of the bottom horizontal rolling supporting carrier roller 202 and the horizontal back pressure guiding carrier roller 203, the whole conveying belt is vertically rolled and steered through the vertical centering carrier roller 201, and therefore first centering traction of steering within the range of 0-90 degrees leftwards or rightwards is achieved.
Meanwhile, according to the on-site requirement, a secondary turning cylindrical rolling support carrier roller group 3 is additionally arranged at a proper position behind the secondary turning cylindrical rolling support carrier roller group and comprises a secondary turning vertical carrier roller 301 and a secondary turning horizontal support carrier roller 302 which are cylindrical, the secondary turning horizontal support carrier roller 301 is connected with a fixed frame 400 through an adjustable seat, and the adjustable seat is provided with a long round hole and has a certain adjustment amount, so that the secondary turning horizontal support carrier roller 301 can rotate relative to the frame main body 400, and therefore, the setting of rotation at a certain angle is realized, and the angle of secondary turning is flexibly changed according to the site space. The outer surface of the secondary turning vertical carrier roller 301 is not in contact with the outer surface of the secondary turning horizontal support carrier roller 302 and is separated by a certain distance, the secondary turning horizontal support carrier roller 302 and the secondary turning vertical carrier roller 301 are also vertically arranged according to 90 degrees, the traction steel wire rope and the conveyor belt are in rolling contact with the secondary turning horizontal support carrier roller 302 and the secondary turning vertical carrier roller 301, when the traction steel wire rope and the conveyor belt realize secondary rolling turning through the secondary turning vertical carrier roller 301, the lower part of the traction steel wire rope and the conveyor belt realize horizontal rolling support through the secondary turning horizontal support carrier roller 302, and therefore secondary turning of the traction steel wire rope and the conveyor belt is realized. The device can further realize the turning of the flexible conveyer belt in the angle range of 0-180 degrees to the left or right between the traction direction of the flexible conveyer belt and the longitudinal axis direction of the belt conveyor according to the on-site requirements, more flexibly adapt to the characteristics of on-site space arrangement, and finally realize the continuous turning and centering traction of the traction steel wire rope 5 at the traction end and the old conveyer belt 6 in the angle range of 0-180 degrees to the left or right. Fig. 2 shows the position of the tractor loader 4 at three typical stations with a change of direction angle of 0 °, 90 °, 180 °.
The centering traction system can reliably realize the continuous large-angle centering traction of the long-distance overhead belt conveyor belt and the belt conveyor in the range of 0-180 degrees leftwards or rightwards in the longitudinal axis direction according to actual conditions within an effective space range in a highly efficient and safe manner. The single traction length is improved by more than 5-10 times compared with the traditional double-crane traction mode, the efficiency is improved by more than 5 times compared with the original large-scale crane matching mode, the site and space limitations are innovatively overcome, and the influence on the running time of the belt conveyor caused by overlong time consumed by the traction of the conveying belt is greatly reduced.
As shown in fig. 1 and 2, the traction system further comprises a belt conveyor 10, a traction loader 4 and a traction steel wire rope 5 at a traction end, wherein the belt conveyor is provided with an old conveyor belt 6, when the conveyor belt is replaced, the old conveyor belt 6 is disconnected at a proper position with a space for the new conveyor belt to pass in and out, upper and lower cover glue is removed from the central part of the traction side of the new conveyor belt and the old conveyor belt, a steel wire rope or a fabric core framework inside is exposed, the double-layer steel clamping plate and a connecting bolt with corresponding sizes are matched for fixing with the belt, a first end of the traction steel wire rope 5 at the traction end is punched at the central part of a first end at a disconnection joint of the old conveyor belt 6 to be replaced and penetrates through a traction plate for realizing connection, a second end is connected with the traction loader 4 through a convergence steering traction device, a central part of a second end at the disconnection joint of the old conveyor belt, the new conveyor belt 8 can be placed on a cylindrical drum whose bottom surface rotates around a fixed axis.
In the traction process, the new conveying belt 8 can be reasonably placed on the normal connection and in-and-out position of the new conveying belt and the old conveying belt close to the traction side of the conveying belt of the belt conveyor according to the space condition of a field, so that the safe and rapid centering and turning traction of the old conveying belt 6 is realized.
More preferably, the system is popularized and applied to long-distance traction of a ground long-distance belt conveyor and a wharf belt conveyor in the same length according to actual field conditions, the conveying belts in narrow field space are quickly centralized and steered to be dragged, the conveying belt traction is efficient, and the deviation is avoided.
The vertical type centralized turning carrier roller 201 and the secondary turning vertical carrier roller 301 need to bear the load force in the turning traction process of the conveying belt, a cylindrical rolling type supporting carrier roller is preferred, external rolling bearings with seats are arranged at two ends of the cylindrical rolling type supporting carrier roller, and the diameter, the drum skin and the bearing capacity of the carrier roller are matched with the traction resistance of the conveying belt. The traction resistance of the conveyor belt is related to factors such as the specification of the conveyor belt, the traction length, the turning angle and the like, and the size of the traction resistance is smaller than the pulling force provided by the traction loader 4 after verification. The width of the working surface of the roller barrel skin matched with the conveying belt is larger than that of the conveying belt, and the optimal value is 200 mm.
Examples
The belt traction guide device is successfully applied to an overhead long-distance belt conveyor of a coal unloading system, and has the basic parameters that the installation height of two parallel arranged belts from a ground conveyor is 9.5 meters, the horizontal length is L694 meters, the total installation length of the conveyor belts is 1525 meters, the specification of the conveyor belts is ST1250 high-strength steel wire belts, the belt width is 1800mm, in order to ensure the stable starting of the initial traction working condition of the conveyor belts and the abnormal timely stopping of the conveyor belts, the belt is controlled, the traction speed of the belt is 0.2m/s, the dynamic load of each part of the belt conveyor is reduced to the greatest extent in the starting moment, the stable starting is realized, and the starting acceleration is 0.1m/s 2.
Through adopting novel centering to turn to draw device and traction system, available traction place linear distance exceeds 200 meters, when utilizing the device to carry out whole the changing to the belt, once draw and to accomplish the pull-out of 200 meters old conveyer belt 6 and the pull-in of new conveyer belt 8, and on average 20 minutes consuming time, single is pull length and is past two crane traction mode 10 times. On the premise that 1525 meters of new belts are placed in a place enough, the total time for completing the traction work of the whole belt is within 3 hours, and the traction efficiency is improved by 6-7 times compared with the original traction process.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a flexible belt quick replacement's of long distance overhead belt feeder traction system, it includes that the level supports prevents inclined to one side bearing roller group, gathers and turns to bearing roller group, secondary diversion and supports bearing roller group, pulls the loader, pulls out end and pulls wire rope and pull wire rope, its characterized in that:
the horizontal supporting deviation-preventing carrier roller group comprises a horizontal supporting carrier roller and vertical deviation-preventing carrier rollers on two sides, the conveying belt is in rolling support through the horizontal supporting carrier roller, and the vertical deviation-preventing carrier rollers are used for centering;
the bottom horizontal supporting carrier roller comprises a first horizontal roller positioned on an overhead frame, a plurality of middle horizontal rollers and a first turning horizontal roller positioned at a first turning position, and the middle horizontal rollers are arranged at intervals and have certain height difference so as to continuously reduce the height of an old conveying belt; the central axis of the vertical type convergence turning carrier roller is vertical to the central axis of the first turning horizontal roller; the old conveying belt moves from the bottom horizontal supporting carrier roller to the vertical convergence turning carrier roller in a rolling friction mode, and the first turning in the range of 0-90 degrees can be realized;
the secondary turning supporting roller group is arranged on the fixed frame through a rolling bearing seat and comprises a secondary turning horizontal supporting roller and a secondary turning vertical roller, the axis of the secondary turning vertical roller is parallel to the axis of the vertical convergence turning roller, and the secondary turning vertical roller and the vertical convergence turning roller are arranged at intervals; the central axis of the secondary turning horizontal supporting carrier roller is perpendicular to the central axis of the secondary turning vertical carrier roller; the secondary turning horizontal supporting carrier roller is connected with the frame main body through an adjustable seat and can be arranged in a rotating mode at a certain angle; when the conveying belt moves from the secondary turning vertical carrier roller to the secondary turning horizontal supporting carrier roller in a rolling friction mode, the secondary turning within the range of 90-180 degrees can be realized;
the first end of the traction steel wire rope at the traction end is connected with the first end central traction point of the disconnected old conveyer belt, the second end of the traction steel wire rope at the traction end is connected with the traction loader, the second end central traction point of the disconnected old conveyer belt is connected with the new conveyer belt central traction point through the traction steel wire rope at the traction end, and the new conveyer belt is wound on the support roller.
2. The traction system for rapid replacement of the flexible belt of an overhead long haul belt conveyor of claim 1, wherein: the guide rolling working surface of the vertical type convergence steering carrier roller is positioned on the same vertical plane with the central axis of a belt conveyor frame, the axis of the vertical type convergence steering carrier roller is perpendicular to the axis of the bottom horizontal support carrier roller, the guide rolling working surface of the vertical type convergence steering carrier roller is positioned on the upper portion of the rolling bearing surface of the bottom horizontal support carrier roller, the portion, exceeding the preset height of the horizontal bearing surface of the conveying belt, of the guide rolling working surface is larger than the diameter of the contracted section of the flexible conveying belt during traction, a horizontal back pressure guide carrier roller is additionally arranged at the portion, slightly larger than the preset height of the diameter of the contracted section of the flexible conveying belt, and the horizontal back pressure guide carrier roller, the bottom horizontal support carrier roller and the vertical type convergence steering carrier roller form first convergence steering traction on the flexible conveying.
3. The traction system for rapid replacement of the flexible belt of an overhead long haul belt conveyor of claim 2, wherein: the axis of the horizontal supporting carrier roller is parallel to the axis of the bottom horizontal supporting carrier roller, the horizontal supporting carrier roller and the bottom horizontal supporting carrier roller are arranged horizontally, and the axis of the vertical anti-deviation carrier roller is arranged vertically.
4. The traction system for rapid flexible belt replacement of an overhead long haul belt conveyor of claim 3, wherein: the flexible conveying belt penetrates through the bottom horizontal supporting carrier roller and the upper side of the secondary turning horizontal supporting carrier roller, and the flexible conveying belt penetrates through the vertical type convergence turning carrier roller and the secondary turning vertical carrier roller from the same side.
5. The traction method of the traction system for quickly replacing the flexible belt of the long-distance overhead belt conveyor as claimed in claims 1-4, is characterized in that: which comprises the following steps:
s1, selecting a traction loader to an optimal position for fixing in the range of 0-180 degrees on both sides of the shaft line of the belt conveyor according to the actual included angle between a field traction channel and the shaft line of the belt conveyor;
s2, when the conveyer belt is replaced, the old conveyer belt is disconnected at the position where the new conveyer belt and the old conveyer belt enter and exit the space, the upper cover glue and the lower cover glue are removed at the central part of the traction side of the new conveyer belt and the old conveyer belt, the inner steel wire rope or the fabric core framework is exposed, the double-layer steel clamping plate and the connecting bolt with corresponding sizes are matched to be fixed with the belt, the new conveyer belt and the old conveyer belt are connected through the connecting hole reserved in the clamping plate and the traction steel wire rope at the traction end, and similarly, the central part of the traction end of the old conveyer belt;
s3, the traction end traction steel wire rope firstly passes through the horizontal support anti-deviation carrier roller group, completes the first rolling direction change within the range of 0-90 degrees when passing through the convergence direction change carrier roller group, completes the second rolling direction change within the range of 90-180 degrees when passing through the secondary direction change support carrier roller group, and is finally connected with a traction loader; and
and S4, starting the traction loader, recovering and drawing the old conveying belt, connecting two end faces of the new conveying belt and the old conveying belt, drawing out the old conveying belt, drawing in the new conveying belt, and replacing the conveying belt.
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Cited By (1)
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| CN104909112A (en) * | 2015-06-04 | 2015-09-16 | 山西晋城无烟煤矿业集团有限责任公司 | Fast replacement process for long-distance steel cord belt |
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| CN108275409A (en) * | 2018-03-15 | 2018-07-13 | 太原理工大学 | A kind of conveyer belt of ribbon conveyer more changing device and conveyer belt strap mechanism |
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| KR100905589B1 (en) * | 2002-11-20 | 2009-07-02 | 주식회사 포스코 | A guide apparatus for preventing a belt folding in conveyor belt changing process |
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| CN111453336B (en) | 2021-06-29 |
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