CN111591708A - Laying method of long-distance belt conveyor conveying rubber belt - Google Patents
Laying method of long-distance belt conveyor conveying rubber belt Download PDFInfo
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- CN111591708A CN111591708A CN202010443268.8A CN202010443268A CN111591708A CN 111591708 A CN111591708 A CN 111591708A CN 202010443268 A CN202010443268 A CN 202010443268A CN 111591708 A CN111591708 A CN 111591708A
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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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
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Abstract
The invention provides a laying method of a conveying belt of a long-distance belt conveyor, which comprises the steps of manufacturing a dragging chuck and a temporary fixer of the conveying belt, calculating the torsion required by dragging the conveying belt and selecting a winch, determining the quantity of required rubber belt rolls and erecting a rubber belt roll bracket, erecting and dragging the winch, laying the conveying belt and closing the loop joint of the conveying belt. The invention is a set of complete, detailed, concrete, general and strong-operability technical scheme, can finish the laying of the long-distance belt conveyor conveying rubber belt quickly, efficiently and with high quality on the basis of ensuring the safety, has low construction cost and good construction quality, can ensure the rights of owners, can obtain better economic benefits for constructors, can also obtain positive social benefits, can effectively guide the laying operation of the similar or similar long-distance belt conveyor conveying rubber belt, has pioneering and instructive significance, and has great popularization and application values.
Description
Technical Field
The invention relates to a laying method of a conveying belt of a belt conveyor, in particular to a laying method of a conveying belt of a long-distance belt conveyor, and belongs to the technical field of material conveying equipment installation.
Background
The belt conveyer is a friction-driven machine for continuously conveying material, mainly comprising machine frame, conveying rubber belt, supporting roller, drum, tension device and driving device, and can be used for conveying material on a certain conveying line from initial feeding point to final discharging point to form a material conveying channel, and can be used for conveying broken material and finished product.
The conveying line of the belt conveyor is flexible and has strong adaptability, the length of the line can be determined according to the requirement, the length is several meters when the line is short, and the length can reach several kilometers when the line is long; can be installed in a small tunnel and also can be erected above ground traffic disorder and dangerous areas, thereby being material transportation equipment with wide application.
Generally, a conveyor belt of a belt conveyor runs on a carrier roller together with a cargo load, the conveyor belt is a traction mechanism and a bearing mechanism, and no relative movement exists between the cargo load and the conveyor belt.
The belt conveyor generally performs installation and debugging of fixed equipment facilities such as a rack, and after the rack is installed and accepted, the conveying rubber belt is laid and looped.
The conveying rubber belt is the last procedure in the installation and before debugging and running of the belt conveyor, is a very important link in the task of timely finishing the installation of the belt conveyor, and meanwhile, whether the laying quality of the conveying rubber belt is good or bad directly influences the normal running and the service life of the belt conveyor, and is the key for ensuring the production and the benefits of owners.
General band conveyer is because the conveyor belt is short, lays relatively easily, nevertheless to long distance band conveyer, because the conveyor belt who uses not only needs very long length, simultaneously, needs to guarantee to have fine intensity, so, the last conveyor belt of long distance band conveyer is not only long, and is heavy moreover, lays fairly difficultly, will guarantee moreover that long distance conveyor belt uses and not produce quality problems such as off tracking, lays the degree of difficulty and is fairly huge.
In the prior art, some guidance suggestions and operation specifications of the conventional belt conveyor conveying belt laying method are provided, but no instructive documents and feasible operation methods with guidance and instructive significance are provided for laying the long-distance belt conveyor conveying belt.
Disclosure of Invention
In order to solve the defects of the prior art, embodiments of the present invention provide a method for laying a conveyor belt of a long-distance belt conveyor, which aims to quickly, efficiently and high-quality lay the conveyor belt of the long-distance belt conveyor on the basis of ensuring safety, and ensure that installation of the long-distance belt conveyor and rights of owners are completed on time.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a method of laying down a conveyor belt of an long-reach belt conveyor, the long-reach belt conveyor comprising at least one belt conveyor segment, each of the belt conveyor segments comprising at least a respective frame and a respective conveyor belt;
the rack comprises a head frame for mounting a driving roller, a tail frame for mounting a turnabout roller and an intermediate frame arranged between the driving roller and the turnabout roller;
the conveying rubber belt is tightly sleeved between the driving roller and the direction-changing roller in a surrounding mode, wherein the part of the conveying rubber belt which bears conveying materials in the working period is called a bearing conveying belt, the part of the conveying rubber belt which does not bear return load in the working period is called a return conveying belt, and the original state of the conveying rubber belt package when leaving a factory is a rubber belt roll wound on a shuttle core;
an upper carrier roller for supporting the bearing conveyer belt and a lower carrier roller for supporting the return conveyer belt are arranged on the middle frame;
it is characterized by comprising:
s1) manufacturing steps of dragging chucks and temporary fixers of the conveying tapes, S2) calculating torsion required by dragging the conveying tapes and selecting a winch, S3) determining the number of required adhesive tape rolls and erecting adhesive tape roll brackets, S4) erecting and dragging preparation steps of the winch, S5) laying the conveying tapes, and S6) closing the loop joint of the conveying tapes;
wherein:
s1) manufacturing steps of the conveying belt dragging chuck and the temporary fixer, which comprise:
s11) manufacturing two T-shaped clamping plates with the same size and shape, wherein each T-shaped clamping plate comprises a rectangular main body and a pull lug protruding from the middle part of one side of the rectangular main body, and the rectangular main body is provided with a bolt hole so as to form the dragging chuck;
s12) cutting two sections of section steel with the length exceeding the width of the frame, and respectively arranging bolt holes at two ends of the section steel so that the section steel can be locked by the bolts to temporarily clamp and fix the conveying rubber belt on the frame to form the temporary fixer;
s2) calculating the torque force required by dragging the conveying rubber belt and selecting a winch, wherein the method comprises the following steps:
s21) calculating the torque force F required by dragging the conveying rubber belt by the following calculation formula:
F＝k×(G1+G2)×R×P±G1×H
wherein:
f: the torque force is required when the conveying rubber belt is dragged on the upper carrier roller or the lower carrier roller;
k: the torque coefficient of the winch;
G1: the self weight of each meter of the conveying rubber belt;
G2: the self weight of the rotatable part on each meter of length of the upper carrier roller or the lower carrier roller;
r: the projection area of the adhesive tape roll on the horizontal plane after being unfolded;
p: the resistance coefficient of the upper carrier roller or the lower carrier roller;
h: the height difference of the upper part and the lower part of the adhesive tape roll after being unfolded;
+: an operation showing that the conveyor belt is dragged from a low position to a high position;
-: an operation showing that the conveyor belt is dragged from a high position to a low position;
s22) selecting a winch matched with the maximum torque value according to the maximum torque value required by dragging the conveying rubber belt on the upper carrier roller or the lower carrier roller obtained by calculation in the step S21) for standby;
s3), the determination of the required adhesive tape roll quantity and the erection of the adhesive tape roll bracket comprise the following steps:
s31), firstly determining the length and joint position of each roll of the adhesive tape roll arriving at the construction site, then calculating the length of the conveyor belt which is required to be wound on each driving roller and each direction-changing roller and the length of the lap joint of the conveyor belt caused by the joint, deducing the distance of the conveyor belt of each roll of the adhesive tape roll laid on the long-distance belt conveyor, and finally determining the number of the adhesive tape rolls required during laying;
s32) erecting a tape roll bracket at a distance from the front of the headstock, then penetrating a rotating shaft into a shuttle peg of the tape roll, and then hoisting the tape roll by using a hoisting device to erect the tape roll on the tape roll bracket, so that the tape roll can rotate on the tape roll bracket through the rotating shaft, and the conveying tape can fall off from the tape roll and is laid on the rack;
s4) preparing the erection and drawing of the hoist, including:
s41) erecting a winch operation table at a position a distance away from the rear part of the tail frame, fixing the winch on the winch operation table, and enabling a steel wire rope of the winch to be always aligned with the central axis of the rack;
s42) putting down the head of the starting end of the adhesive tape roll erected on the adhesive tape roll bracket, oppositely clamping and fixing two T-shaped clamping plates of the dragging chuck on the head of the starting end by using bolts, and then connecting a steel wire rope on the winch with a pull lug on the dragging chuck;
s5) a step of laying a transfer tape, comprising:
s51) laying of a return conveyor, S52) laying of a carrier conveyor, wherein:
s51) laying the return conveyer belt specifically comprises the following steps:
the upper carrier rollers on the rack are completely detached, all the lower carrier rollers are reserved, then the winch is started, the conveying rubber belt is pulled downwards from the rubber belt roll by pulling of a steel wire rope of the winch and driving of the dragging chuck and laid on the lower carrier rollers, after all the conveying rubber belts are laid on the lower carrier rollers, the conveying rubber belts are cut off from the rubber belt roll, the tail end heads of the conveying rubber belts are fixed on the rack near the headstock by the temporary fixing devices, the steel wire rope is continuously tensioned to enable the conveying rubber belts to keep certain tension, and the starting end heads are fixed on the rack near the tailstock by the temporary fixing devices, so that the laying of the return conveying belt is completed;
s52) laying the bearing conveyor belt specifically comprises the following steps:
mounting all the upper carrier rollers on the original positions of the rack, then starting the winch, pulling the steel wire rope of the winch and driving the dragging chuck to drag the bearing surface of the conveying belt upwards from the belt roll to lay the belt on the upper carrier rollers, cutting the conveying belt from the belt roll after the length of a lap joint is reserved after all the conveying belt is laid on the upper carrier rollers, fixing the tail end part of the conveying belt on the rack near the headstock by using the temporary fixator, continuously tensioning the steel wire rope to keep the conveying belt at a certain tension, and fixing the starting end part on the rack near the tailstock by using the temporary fixator, thus finishing the laying of the bearing conveying belt;
s6) a loop closing step of the transfer tape, including:
s61) respectively winding the tail end head of the return belt exposed outside the temporary fixer around the driving roller and then connecting the tail end head of the return belt with the tail end head of the carrier belt by a vulcanized rubber bonding method, then winding the start end head of the return belt exposed outside the temporary fixer around the direction-changing roller and then connecting the start end head of the carrier belt by a vulcanized rubber bonding method, and removing the temporary fixer, thereby completing the laying of the long-distance belt conveying section conveying rubber belt;
s62) repeating the operations of the steps S3) to S61), and completing the application of the conveyor belt of each belt conveying segment of the long-distance belt conveyor, namely completing the application of the conveyor belt of the belt conveyor.
Further:
the torsion coefficient k of the winch takes 1.5 after static friction is considered;
and the resistance coefficient P of the upper carrier roller or the lower carrier roller which is connected and installed by the rolling bearing takes the value of 0.055.
Further, in the step S5), the method further includes: s53), a connecting step of the conveying adhesive tape, which comprises the following specific steps:
when the conveying adhesive tape on one tape roll is completely laid on the upper carrier roller or the lower carrier roller and cannot be fully covered with all the upper carrier rollers or the lower carrier rollers to be covered, firstly, the shuttle peg without the conveying adhesive tape is taken off from the tape roll bracket by using a hoisting device, then a new tape roll is replaced, the head of the starting end of the new tape roll is put down and the head of the tail end of the conveying adhesive tape of the last tape roll laid on the upper carrier roller or the lower carrier roller are connected by adopting a vulcanized rubber bonding method, and then the operation of the step S51) or S52) is continued.
Further: the adhesive tape roll support is arranged on the central axis of the frame in a straddling manner or on the frame, and two sides of the adhesive tape roll support are respectively provided with an oblique support.
Further: the winch operation platform is arranged on the central axis of the frame in a bestriding mode or on the frame, and the two sides of the winch operation platform are respectively provided with an inclined support.
Further: the T-shaped clamping plate is made of a steel plate with the thickness of 12mm, and 8M 10 multiplied by 80 high-strength bolts are arranged on the rectangular main body.
Further: the section steel for manufacturing the temporary fixator is angle steel of 75 multiplied by 8.
Further: the edge distance between the front end edge of the rectangular main body of the dragging chuck and the edge line of the head of the starting end of the conveying rubber belt is more than 200mm, and the steel wire rope is connected with the pulling lug through a 5t clamping ring.
Further: the length of the long-distance belt conveyor is more than 9.5 km.
Further: the conveying adhesive tape is a steel wire rope core conveying belt with St1600-1200, 6/4 and phi 5.4.
Compared with the prior art, the embodiment of the invention has the beneficial effects and obvious progress that:
1) according to the laying method of the conveying belt of the long-distance belt conveyor, the complete laying method of the conveying belt of the long-distance belt conveyor is provided through the manufacturing steps of the dragging chuck and the temporary fixer of the conveying belt, the calculation of the torsion required by dragging the conveying belt and the selection of the winch, the determination of the required number of the belt rolls, the erection of the belt roll bracket, the erection and dragging preparation steps of the winch, the laying step of the conveying belt and the ring joint closing step of the conveying belt, and the laying of the conveying belt of the long-distance belt conveyor can be finished quickly, efficiently and with high quality on the basis of ensuring the safety according to the method;
2) the laying method of the long-distance belt conveyor conveying rubber belt provided by the embodiment of the invention is detailed and concrete, not only fully considers the safety, but also has strong universality and operability, can finish the laying of the long-distance belt conveyor conveying rubber belt on time, effectively ensures the laying quality of the conveying rubber belt, can also effectively guide the mounting and laying of the similar or similar long-distance belt conveyor conveying rubber belt, and has pioneering and guiding significance;
3) the laying method of the conveying rubber belt of the long-distance belt conveyor provided by the embodiment of the invention can ensure that the laying of the conveying rubber belt is finished on time, has low construction cost, can practically ensure the construction quality, can ensure the rights and interests of owners, can obtain better economic benefits for constructors, and can also obtain positive social benefits, thereby having great popularization and application values.
Drawings
To more clearly illustrate the technical solution of the present invention, the drawings required for the embodiment of the present invention will be briefly described below.
It should be apparent that the drawings in the following description are only drawings of some embodiments of the invention, and that other drawings can be obtained by those skilled in the art without inventive exercise, and the other drawings also belong to the drawings required by the embodiments of the invention.
Fig. 1 is a schematic structural diagram of a belt conveying segment in a method for laying a long-distance belt conveyor belt according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a construction process of a laying method of a long-distance belt conveyor belt according to an embodiment of the invention;
fig. 3 is a schematic view of the structure of a dragging chuck used in the laying method of the conveyor belt of the long-distance belt conveyor according to the embodiment of the invention and the working process thereof;
fig. 4 is a schematic perspective view of a temporary holder used in a method for laying a conveyor belt of a long-distance belt conveyor according to an embodiment of the present invention.
In the figure:
100-a frame, 110-a headstock, 111-a driving roller, 120-a tailstock, 121-a direction-changing roller, 130-an intermediate frame, 131-an upper carrier roller and 132-a lower carrier roller;
200-conveying rubber belt, 210-bearing conveying belt and 220-return conveying belt;
300-dragging clamp, 310-rectangular main body, 320-pulling lug and 330-bolt hole;
400-temporary fixation, 410-section steel, 420-bolt hole;
500-steel wire rope.
Detailed Description
In order to make the objects, technical solutions, advantages and significant progress of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings provided in the embodiments of the present invention, and it is obvious that all of the described embodiments are only some embodiments of the present invention, but not all embodiments; 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 should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the accompanying drawings of the embodiments of the present invention are used for distinguishing different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
It is to be understood that in the description of the embodiments of the present invention, the use of the terms orientation or position, which are used in the description of the embodiments of the present invention, are only based on the orientation or position shown in the drawings of the embodiments of the present invention, and are used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element in question must have a specific orientation, a specific orientation configuration and operation, and therefore, should not be taken as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, movably connected, or integrated; either directly or indirectly through intervening media, and may be internal to both elements or may be in a relationship other than that explicitly described herein.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be further noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
The technical means of the present invention will be described in detail below with specific examples.
Examples
The embodiment provides a laying method of a long-distance belt conveyor conveying rubber belt.
Fig. 1 shows a schematic structural diagram of a belt conveying segment in a method for laying a long-distance belt conveyor belt according to an embodiment of the present invention:
in this embodiment, the long-distance belt conveyor includes at least one belt conveying segment, and each belt conveying segment includes at least a respective frame 100 and a respective conveyor belt 200;
the rack 100 includes a headstock 110 for mounting the drive drum 111, a tailstock 120 for mounting the direction-changing drum 121, and an intermediate frame 130 disposed between the drive drum 111 and the direction-changing drum 121;
the conveying belt 200 is tightly sleeved between the driving roller 111 and the direction-changing roller 121 in a surrounding mode, wherein a part of the conveying belt which bears conveying materials in the working period is called a bearing conveying belt 210, a part of the conveying belt which does not bear load return in the working period is called a return conveying belt 220, and the original state of the conveying belt 200 when packaged and delivered is a belt roll wound on a shuttle peg;
the intermediate frame 130 is provided with upper supporting rollers 131 for supporting the carrier belt 210 and lower supporting rollers 132 for supporting the return belt 220.
As shown in fig. 2, a schematic block diagram of a construction process of a method for laying a conveyor belt of a long-distance belt conveyor according to an embodiment of the present invention, the method for laying a conveyor belt of a long-distance belt conveyor according to the embodiment includes:
s1) manufacturing steps of a dragging chuck and a temporary fixer of the conveying belt, S2) calculating torsion required by dragging the conveying belt and selecting a winch, S3) determining the quantity of required belt rolls and erecting a belt roll bracket, S4) erecting and dragging preparation steps of the winch, S5) laying the conveying belt, and S6) closing the loop joint of the conveying belt.
Fig. 3 shows a schematic structure and an operation process of a dragging chuck used in a method for laying a conveyor belt of a long-distance belt conveyor according to an embodiment of the present invention:
the dragging clamp 300 comprises two T-shaped clamping plates with the same size and the same shape, each T-shaped clamping plate comprises a rectangular main body 310 and a pulling lug 320 protruding from the middle of one side of the rectangular main body 310, and a bolt hole 330 is formed in the rectangular main body 310.
Fig. 4 is a schematic perspective view of a temporary holder used in a method for laying a conveyor belt of a long-distance belt conveyor according to an embodiment of the present invention:
the temporary fixing device 400 is formed by two sections of section steel 410 with a length exceeding the width of the rack 100, and bolt holes 420 are respectively formed in two ends of the section steel 410, so that the conveying belt 200 can be temporarily clamped and fixed on the rack 100 through locking of the bolts.
After completing S1) the manufacturing steps of the transfer tape dragging cartridge and the temporary holder, the following operation steps are performed:
s2) calculating the torque force required by dragging the conveying belt and selecting a winch, wherein the method specifically comprises the following steps:
s21) calculating the torque force F required by dragging the conveying rubber belt by the following calculation formula:
F＝k×(G1+G2)×R×P±G1×H
wherein:
f: the torque force is required when the conveying belt is dragged on the upper carrier roller or the lower carrier roller;
k: the torque coefficient of the winch;
G1: the self weight of each meter of the conveying rubber belt;
G2: the self weight of the rotatable part on each meter of length of the upper carrier roller or the lower carrier roller;
r: the projected area of the adhesive tape roll on the horizontal plane after the adhesive tape roll is unfolded;
p: the resistance coefficient of the upper carrier roller or the lower carrier roller;
h: the height difference of the upper part and the lower part of the adhesive tape roll after being unfolded;
+: the calculation is shown when the conveying belt is dragged from a low position to a high position;
-: the calculation is shown when the conveying belt is dragged from a high position to a low position;
s22) selecting a winch matched with the maximum torque value according to the maximum torque value required by dragging the conveying belt on the upper carrier roller or the lower carrier roller obtained by calculation in the step S21) for standby;
s3), the steps of determining the number of the required adhesive tape rolls and erecting the adhesive tape roll support specifically comprise:
s31), firstly, determining the length and the joint position of each roll of the adhesive tape roll reaching a construction site, then calculating the length of the conveying adhesive tape which is required to be wound and consumed on each driving roller and each direction-changing roller and the lap joint length of the conveying adhesive tape caused by the joint, deducing the laying distance of the conveying adhesive tape of each roll of the adhesive tape roll on the long-distance belt conveyor, and finally determining the number of the adhesive tape rolls required during laying;
s32) erecting a tape roll bracket at a distance from the front of the headstock, then penetrating a rotating shaft into a shuttle peg of the tape roll, and then hoisting the tape roll by using a hoisting device to erect the tape roll on the tape roll bracket, so that the tape roll can rotate on the tape roll bracket through the rotating shaft, and a conveying tape can fall off from the tape roll and is laid on a rack;
s4) erecting and dragging preparation steps of the winch specifically comprise:
s41) erecting a winch operation table at a position a certain distance away from the rear of the tail frame, fixing the winch on the winch operation table, and enabling a steel wire rope of the winch to be aligned with the central axis of the frame all the time;
s42) putting down the head of the starting end of a tape roll erected on the tape roll bracket, oppositely clamping and fixing two T-shaped clamping plates of a dragging chuck on the head of the starting end by using bolts, and then connecting a steel wire rope on a winch with a pulling lug on the dragging chuck;
s5), laying of the conveying rubber belt, which specifically comprises the following steps:
s51) laying of a return conveyor, S52) laying of a carrier conveyor, wherein:
s51) laying the return conveyer belt specifically comprises the following steps:
the upper carrier rollers on the frame are completely detached, all the lower carrier rollers are reserved, then the winch is started, the carrying surface of the conveying belt is pulled downwards from the adhesive tape roll by pulling of a steel wire rope of the winch and driving of a dragging chuck, the conveying belt is laid on the lower carrier rollers, the conveying belt is cut off from the adhesive tape roll after all the conveying belt is laid on the lower carrier rollers, the tail end head of the conveying belt is fixed on the frame near the headstock by a temporary fixer, the steel wire rope is continuously tensioned to keep the conveying belt at a certain tension, and the starting end head is fixed on the frame near the tailstock by the temporary fixer, so that the laying of the return conveying belt is completed;
s52) laying the bearing conveyor belt specifically comprises the following steps:
mounting all upper carrier rollers on the original positions of a rack, then starting a winch, pulling a steel wire rope of the winch and driving a dragging chuck to drag a bearing surface of a conveying belt upwards from a belt roll, laying the belt roll on the upper carrier rollers, cutting the conveying belt from the belt roll after the length of a lap joint is reserved after all the conveying belts are laid on the upper carrier rollers, fixing the tail end part of the conveying belt on the rack near a headstock by using a temporary fixer, continuously tensioning the steel wire rope to keep certain tension of the conveying belt, and fixing the starting end part on the rack near the tailstock by using the temporary fixer, thus finishing laying the bearing conveying belt;
s6) carrying out loop joint closing on the adhesive tape, which specifically comprises the following steps:
s61) winding the tail end part of the return conveyer belt exposed outside the temporary fixer and the tail end part of the bearing conveyer belt around the driving roller respectively and then connecting the tail end part of the return conveyer belt exposed outside the temporary fixer and the tail end part of the bearing conveyer belt around the bend roller respectively and then connecting the starting end part of the return conveyer belt exposed outside the temporary fixer and the starting end part of the bearing conveyer belt by using the vulcanized rubber bonding method, and detaching the temporary fixer to finish the laying of the long-distance belt conveying section conveying rubber belt;
s62) repeating the operations of the steps S3) to S61), and completing the application of the conveyor belt of each belt conveying segment of the long-distance belt conveyor, namely completing the application of the conveyor belt of the belt conveyor.
In the specific implementation process of the laying method of the conveying belt of the long-distance belt conveyor:
after static friction is considered, the torsion coefficient k of the winch is 1.5;
the resistance coefficient P of an upper carrier roller or a lower carrier roller which is connected and installed by a rolling bearing takes 0.055.
Also, in the concrete implementation of the above method for laying a conveyor belt of a long-distance belt conveyor:
the adhesive tape roll bracket is arranged on the central axis of the frame or on the frame in a straddling manner, and two sides of the adhesive tape roll bracket are respectively reinforced by oblique supports;
the winch operation platform is arranged on the central axis of the frame or on the frame in a straddling manner, and two sides of the winch operation platform are reinforced by inclined supports respectively.
In this embodiment, the t-shaped clamp plate of the dragging clamp 300 can be made of a steel plate with a thickness of 12mm, and 8M 10 × 80 high-strength bolts are disposed on the rectangular main body 310 for effectively and firmly connecting with the conveying belt 200.
In addition, the front edge of the rectangular main body 310 of the dragging clamp 300 is more than 200mm away from the edge line of the starting end of the conveying tape 200, so as to ensure that the starting end of the conveying tape 200 is not pulled apart.
In an alternative embodiment, the cable 500 is connected to the pull tab 320 by a 5t snap ring (not shown).
Also, in an alternative embodiment, the section steel from which the temporary fixation is made is a 75 x 8 angle steel.
Further, the step of S5) includes:
s53), a connecting step of the conveying adhesive tape, which comprises the following specific steps:
when the conveying adhesive tape on one adhesive tape roll cannot be fully coated on all upper supporting rollers or lower supporting rollers to be coated after being completely coated on the upper supporting rollers or the lower supporting rollers, the bobbin without the conveying adhesive tape is taken off from the adhesive tape roll bracket by using the lifting equipment and then replaced by a new adhesive tape roll, the head part of the starting end of the new adhesive tape roll is put down and the tail end part of the conveying adhesive tape of the upper adhesive tape roll coated on the upper supporting roller or the lower supporting roller are connected by adopting a vulcanization adhesive tape bonding method, and then the operation of the steps of S51) or S52) is continued, so that the conveying adhesive tape is fully utilized.
Further, in this embodiment, the length of the long-distance belt conveyor is more than 9.5 km.
Furthermore, in the embodiment, St1600-1200, 6/4, phi 5.4 steel wire rope core conveyer belts are selected as the conveyer belts to meet the production requirements.
In summary, it can be seen that:
firstly, the method for laying the conveying belt of the long-distance belt conveyor provided by the embodiment provides a complete laying method for the conveying belt of the long-distance belt conveyor through the steps of manufacturing a dragging chuck and a temporary fixer of the conveying belt, calculating the torsion required by dragging the conveying belt, selecting a winch, determining the number of required belt rolls, erecting a belt roll bracket, erecting and dragging the winch, laying the conveying belt and closing the ring joint of the conveying belt, and can quickly, efficiently and high-quality finish the laying of the conveying belt of the long-distance belt conveyor on the basis of ensuring safety;
secondly, the laying method of the long-distance belt conveyor conveying rubber belt provided by the embodiment is detailed and concrete, not only fully considers the safety, but also has strong universality and operability, can finish the laying of the long-distance belt conveyor conveying rubber belt on time, effectively ensures the laying quality of the conveying rubber belt, can effectively guide the mounting and laying of the similar or similar long-distance belt conveyor conveying rubber belt, and has pioneering and guiding significance;
thirdly, the laying method of the conveying belt of the long-distance belt conveyor provided by the embodiment can ensure that the laying of the conveying belt is finished on time, is low in construction cost, can practically guarantee the construction quality, can ensure the rights and interests of owners, can obtain better economic benefits for constructors, and can also obtain positive social benefits, so that the method has great popularization and application values.
During the description of the above description:
the description of the terms "this embodiment," "an embodiment of the invention," "as shown at … …," "further," "as an alternative," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention;
in this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc., may be combined or brought together in any suitable manner in any one or more embodiments or examples;
furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that: 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 various changes, modifications, substitutions and alterations can be made on the technical solutions described in the foregoing embodiments, or some or all of the technical features of the embodiments can be equivalently replaced, and the corresponding technical solutions do not depart from the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of laying down a conveyor belt of an long-reach belt conveyor, the long-reach belt conveyor comprising at least one belt conveyor segment, each of the belt conveyor segments comprising at least a respective frame and a respective conveyor belt;
the rack comprises a head frame for mounting a driving roller, a tail frame for mounting a turnabout roller and an intermediate frame arranged between the driving roller and the turnabout roller;
the conveying rubber belt is tightly sleeved between the driving roller and the direction-changing roller in a surrounding mode, wherein the part of the conveying rubber belt which bears conveying materials in the working period is called a bearing conveying belt, the part of the conveying rubber belt which does not bear return load in the working period is called a return conveying belt, and the original state of the conveying rubber belt package when leaving a factory is a rubber belt roll wound on a shuttle core;
an upper carrier roller for supporting the bearing conveyer belt and a lower carrier roller for supporting the return conveyer belt are arranged on the middle frame;
it is characterized by comprising:
s1) manufacturing steps of the conveying belt dragging chuck and the temporary fixer, which comprise:
s11) manufacturing two T-shaped clamping plates with the same size and shape, wherein each T-shaped clamping plate comprises a rectangular main body and a pull lug protruding from the middle part of one side of the rectangular main body, and the rectangular main body is provided with a bolt hole so as to form the dragging chuck;
s12) cutting two sections of section steel with the length exceeding the width of the frame, and respectively arranging bolt holes at two ends of the section steel so that the section steel can be locked by the bolts to temporarily clamp and fix the conveying rubber belt on the frame to form the temporary fixer;
s2) calculating the torque force required by dragging the conveying rubber belt and selecting a winch, wherein the method comprises the following steps:
s21) calculating the torque force F required by dragging the conveying rubber belt by the following calculation formula:
F＝k×(G1+G2)×R×P±G1×H
wherein:
f: the torque force is required when the conveying rubber belt is dragged on the upper carrier roller or the lower carrier roller;
k: the torque coefficient of the winch;
G1: the self weight of each meter of the conveying rubber belt;
G2: the self weight of the rotatable part on each meter of length of the upper carrier roller or the lower carrier roller;
r: the projection area of the adhesive tape roll on the horizontal plane after being unfolded;
p: the resistance coefficient of the upper carrier roller or the lower carrier roller;
h: the height difference of the upper part and the lower part of the adhesive tape roll after being unfolded;
+: an operation showing that the conveyor belt is dragged from a low position to a high position;
-: an operation showing that the conveyor belt is dragged from a high position to a low position;
s22) selecting a winch matched with the maximum torque value according to the maximum torque value required by dragging the conveying rubber belt on the upper carrier roller or the lower carrier roller obtained by calculation in the step S21) for standby;
s3), the determination of the required adhesive tape roll quantity and the erection of the adhesive tape roll bracket comprise the following steps:
s31), firstly determining the length and joint position of each roll of the adhesive tape roll arriving at the construction site, then calculating the length of the conveyor belt which is required to be wound on each driving roller and each direction-changing roller and the length of the lap joint of the conveyor belt caused by the joint, deducing the distance of the conveyor belt of each roll of the adhesive tape roll laid on the long-distance belt conveyor, and finally determining the number of the adhesive tape rolls required during laying;
s32) erecting a tape roll bracket at a distance from the front of the headstock, then penetrating a rotating shaft into a shuttle peg of the tape roll, and then hoisting the tape roll by using a hoisting device to erect the tape roll on the tape roll bracket, so that the tape roll can rotate on the tape roll bracket through the rotating shaft, and the conveying tape can fall off from the tape roll and is laid on the rack;
s4) the preparation steps of erection and hauling of the hoist include:
s41) erecting a winch operation table at a position a distance away from the rear part of the tail frame, fixing the winch on the winch operation table, and enabling a steel wire rope of the winch to be always aligned with the central axis of the rack;
s42) putting down the head of the starting end of the adhesive tape roll erected on the adhesive tape roll bracket, oppositely clamping and fixing two T-shaped clamping plates of the dragging chuck on the head of the starting end by using bolts, and then connecting a steel wire rope on the winch with a pull lug on the dragging chuck;
s5) a step of laying a transfer tape, comprising:
s51) laying a return conveyer belt, specifically:
the upper carrier rollers on the rack are completely detached, all the lower carrier rollers are reserved, then the winch is started, the conveying rubber belt is pulled downwards from the rubber belt roll by pulling of a steel wire rope of the winch and driving of the dragging chuck and laid on the lower carrier rollers, after all the conveying rubber belts are laid on the lower carrier rollers, the conveying rubber belts are cut off from the rubber belt roll, the tail end heads of the conveying rubber belts are fixed on the rack near the headstock by the temporary fixing devices, the steel wire rope is continuously tensioned to enable the conveying rubber belts to keep certain tension, and the starting end heads are fixed on the rack near the tailstock by the temporary fixing devices, so that the laying of the return conveying belt is completed;
s52) laying of the bearing conveyor belt, which comprises the following specific steps:
mounting all the upper carrier rollers on the original positions of the rack, then starting the winch, pulling the steel wire rope of the winch and driving the dragging chuck to drag the bearing surface of the conveying belt upwards from the belt roll to lay the belt on the upper carrier rollers, cutting the conveying belt from the belt roll after the length of a lap joint is reserved after all the conveying belt is laid on the upper carrier rollers, fixing the tail end part of the conveying belt on the rack near the headstock by using the temporary fixator, continuously tensioning the steel wire rope to keep the conveying belt at a certain tension, and fixing the starting end part on the rack near the tailstock by using the temporary fixator, thus finishing the laying of the bearing conveying belt;
s6) a loop closing step of the transfer tape, including:
s61) respectively winding the tail end head of the return belt exposed outside the temporary fixer around the driving roller and then connecting the tail end head of the return belt with the tail end head of the carrier belt by a vulcanized rubber bonding method, then winding the start end head of the return belt exposed outside the temporary fixer around the direction-changing roller and then connecting the start end head of the carrier belt by a vulcanized rubber bonding method, and removing the temporary fixer, thereby completing the laying of the long-distance belt conveying section conveying rubber belt;
s62) repeating the operations of the steps S3) to S61), and completing the application of the conveyor belt of each belt conveying segment of the long-distance belt conveyor, namely completing the application of the conveyor belt of the belt conveyor.
2. A method of laying down a long distance belt conveyor belt according to claim 1, wherein:
the torsion coefficient k of the winch takes 1.5 after static friction is considered;
and the resistance coefficient P of the upper carrier roller or the lower carrier roller which is connected and installed by the rolling bearing takes the value of 0.055.
3. The method of laying down long-distance belt conveyor belt according to claim 1, wherein in said step S5), further comprising: s53), a connecting step of the conveying adhesive tape, which comprises the following specific steps:
when the conveying adhesive tape on one tape roll is completely laid on the upper carrier roller or the lower carrier roller and cannot be fully covered with all the upper carrier rollers or the lower carrier rollers to be covered, firstly, the shuttle peg without the conveying adhesive tape is taken off from the tape roll bracket by using a hoisting device, then a new tape roll is replaced, the head of the starting end of the new tape roll is put down and the head of the tail end of the conveying adhesive tape of the last tape roll laid on the upper carrier roller or the lower carrier roller are connected by adopting a vulcanized rubber bonding method, and then the operation of the step S51) or S52) is continued.
4. A method of laying down a long distance belt conveyor belt according to claim 1, wherein: the adhesive tape roll support is arranged on the central axis of the frame in a straddling manner or on the frame, and two sides of the adhesive tape roll support are respectively provided with an oblique support.
5. A method of laying down a long distance belt conveyor belt according to claim 1, wherein: the winch operation platform is arranged on the central axis of the frame in a bestriding mode or on the frame, and the two sides of the winch operation platform are respectively provided with an inclined support.
6. A method of laying down a long distance belt conveyor belt according to claim 1, wherein: the T-shaped clamping plate is made of a steel plate with the thickness of 12mm, and 8M 10 multiplied by 80 high-strength bolts are arranged on the rectangular main body.
7. A method of laying down a long distance belt conveyor belt according to claim 1, wherein: the section steel for manufacturing the temporary fixator is angle steel of 75 multiplied by 8.
8. A method of laying down a long distance belt conveyor belt according to claim 1, wherein: the edge distance between the front end edge of the rectangular main body of the dragging chuck and the edge line of the head of the starting end of the conveying rubber belt is more than 200mm, and the steel wire rope is connected with the pulling lug through a 5t clamping ring.
9. A method of laying down a long distance belt conveyor belt according to claim 1, wherein: the length of the long-distance belt conveyor is more than 9.5 km.
10. A method of laying down a long distance belt conveyor belt according to claim 1, wherein: the conveying adhesive tape is a steel wire rope core conveying belt with St1600-1200, 6/4 and phi 5.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010443268.8A CN111591708A (en) | 2020-05-22 | 2020-05-22 | Laying method of long-distance belt conveyor conveying rubber belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010443268.8A CN111591708A (en) | 2020-05-22 | 2020-05-22 | Laying method of long-distance belt conveyor conveying rubber belt |
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| Publication Number | Publication Date |
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| CN111591708A true CN111591708A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010443268.8A Pending CN111591708A (en) | 2020-05-22 | 2020-05-22 | Laying method of long-distance belt conveyor conveying rubber belt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604566A (en) * | 2020-12-08 | 2022-06-10 | 泰富重工制造有限公司 | Method for penetrating long-distance adhesive tape by utilizing various process platform type trusses |
-
2020
- 2020-05-22 CN CN202010443268.8A patent/CN111591708A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604566A (en) * | 2020-12-08 | 2022-06-10 | 泰富重工制造有限公司 | Method for penetrating long-distance adhesive tape by utilizing various process platform type trusses |
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