A mobile shuttle car belt idler bracket connection device and replacement method

Abstract

The application discloses a mobile shuttle vehicle belt supporting roller frame connecting device and a replacing method, which comprises a multi-hole beam, a lifting lug, a clasp ring, a second rope buckle and a lifting hook. The multi-hole beam is provided with a plurality of long holes arranged in sequence and at intervals along the length direction on the beam body. Two lifting lugs are arranged on the same long side of the multi-hole beam. Two clasp rings are respectively connected with the two ends of the second rope buckle. The two clasp rings are respectively connected with the two lifting lugs. The lifting hook is hooked with the rope part of the second rope buckle. The supporting roller frames of the shuttle vehicle belt are respectively connected with supporting roller frame supporting arms on both sides. All the supporting roller frame supporting arms on the same long side of the shuttle vehicle belt are provided with holes. In the use state, the bolt and nut are installed at the hole of the supporting roller frame supporting arm and the long hole of the multi-hole beam. The multi-hole beam can be used to fix dozens of supporting roller frame supporting arms. The simple operation method of sequentially sleeving the head roller, the upper supporting roller frame and the tail roller is realized. The replacing time of the annular belt is greatly shortened, and the complicated steps of dismounting the supporting roller are reduced.

Description

Technical Field

[0001] This invention relates to the field of mining and metallurgical ball sintering equipment technology, and in particular to a mobile shuttle car belt idler frame connection device and replacement method. Background Technology

[0002] The mobile shuttle conveyor belt used in the metallurgical pelletizing process system serves as the first checkpoint in pelletizing production, playing a crucial role on par with the sintering machine and roasting machine. As long as production continues, the shuttle conveyor belt operates continuously without interruption. Therefore, the stable operation of the shuttle conveyor belt directly affects the stable operation and production efficiency of pelletizing. Consequently, routine maintenance of the shuttle conveyor belt can only be performed once a year, in conjunction with periodic maintenance shutdowns and environmental protection-related production restrictions.

[0003] The rubber belt used in the mobile shuttle is a one-piece ring belt. This type of belt has no joints, has a long service life, and is less prone to quality problems such as delamination and cracking.

[0004] Due to the long maintenance cycle, high labor intensity for maintenance workers, and complex maintenance procedures, shuttle car belts are generally not replaced during short-term downtime. However, these belts have a short service life, often needing replacement before completing a single maintenance cycle or even before the next one. Under tight production conditions, they are often left unattended until the scheduled maintenance cycle. During this period of uninterrupted operation, the equipment failure rate is at its highest and is uncontrollable.

[0005] To prevent the continued expansion of hidden dangers in the annular belt and reduce the occurrence and impact of uncontrollable equipment problems, shortening maintenance time and utilizing the material distribution and maintenance time to replace the annular belt have become key issues and challenges that need to be overcome for the long-term stable operation of the shuttle car annular belt. Summary of the Invention

[0006] To address the aforementioned issues, this application provides a mobile shuttle car belt roller frame connection device and a replacement method.

[0007] This application provides a mobile shuttle belt idler frame connecting device. The idler frame connecting device includes a multi-hole beam, lifting lugs, retaining rings, a second rope buckle, and a hook. The multi-hole beam has multiple elongated holes arranged at intervals along its length. Two lifting lugs are provided on the same long side of the multi-hole beam. A retaining ring is connected to each end of the second rope buckle. The two retaining rings are connected to the two lifting lugs respectively. The hook is hooked to the rope part of the second rope buckle. The idler frame of the shuttle belt is connected to idler frame support arms on both sides. All idler frame support arms located on the same long side of the shuttle belt have holes. In use, bolts and nuts are installed at the holes of the idler frame support arms and the elongated holes of the multi-hole beam.

[0008] In some embodiments, the holes in the roller support arm are round holes, and the elongated holes in the multi-hole beam are oblong holes, with the diameter of the round hole being equal to the length of the minor axis of the oblong hole.

[0009] In some embodiments, the oblong hole is elliptical, with a minor axis length of 20 mm, and a deviation of 50 mm is left on each side from the center of the oblong hole.

[0010] In some implementations, all the holes are made at the same height on the roller support arm so that the perforated beam is installed parallel to the frame of the shuttle belt.

[0011] In some implementations, the perforated beam is made of channel steel.

[0012] A method for replacing a mobile shuttle belt, using the aforementioned idler frame connecting device, wherein the shuttle belt includes a head roller, idler frames, and a tail roller; the replacement method includes: completing the installation of the annular belt on the head roller; after completing the installation of the annular belt on the head roller, fixing the perforated beam to the idler frame support arm on the same side of the idler frame, connecting the two ends of the second rope buckle to the two lifting lugs of the perforated beam respectively through snap rings, and securing the perforated beam to the idler frame support arm with bolts and nuts, then loosening the screws on one side of the idler frame without removing the screws, removing the anchor bolts of the idler frame on the side where the perforated beam is located, inserting the second rope buckle into the annular belt and connecting it to the lifting hook, stopping the lifting equipment after lifting, and manually sliding the annular belt onto the inside of dozens of idler frames, lowering it back to its original position after successful sliding, adjusting and tightening the screws on both sides of the idler frame, and removing the perforated beam; after removing the perforated beam, completing the installation of the annular belt on the tail roller.

[0013] In some embodiments, completing the assembly of the annular belt on the head roller includes: disassembling the drive roller and the reducer coupling to disconnect the drive roller from the reducer coupling; removing the bearing seat foot on one side of the reducer coupling; loosening the bearing seat foot on the other side (but not removing it); inserting a first rope hook into the annular belt and passing it through; connecting the first rope hook to a lifting hook and lifting it; thus completing the assembly of the annular belt on the drive roller.

[0014] In some implementations, the assembly of the annular belt onto the tail drum includes: removing the fastening bolts of the tail drum bearing seat on one side of the annular belt assembly, loosening but not removing the fastening bolts of the tail drum bearing seat on the other side, inserting a third rope hook into the annular belt and passing it through, connecting the third rope hook to a lifting hook and lifting it, and the assembly of the annular belt onto the tail drum can be completed with manual assistance.

[0015] In some implementations, after the annular belt is fitted onto the tail pulley, the bolts are adjusted and tightened to restore the connection between the drive pulley and the reducer coupling, and the tail pulley is re-tensioned.

[0016] In some implementations, the lifting equipment lifts the crane by 500mm-800mm after the second rope hook is connected to the lifting hook.

[0017] The beneficial effects of this application are as follows: It provides a mobile shuttle belt idler frame connection device, including a multi-hole beam, lifting lugs, retaining rings, a second rope buckle, and a hook. All idler frame support arms located on the same long side of the shuttle belt have holes. Bolts and nuts are installed at the holes of the idler frame support arms and the long holes of the multi-hole beam. Dozens of idler frame support arms can be fixed using the multi-hole beam. The method of overall lifting and assembly eliminates the idler frame disassembly step. Without removing the rollers, idler frames, and idlers, the device can be assembled sequentially from the head roller to the tail roller using a side-loosening and side-removing operation method. This simplifies the operation of sequentially assembling the head roller, upper idler frame, and tail roller, significantly shortens the replacement time of the ring belt, reduces the complicated steps of removing idlers, reduces the labor intensity of workers, increases the safety of maintenance operations, and improves the efficiency of maintenance operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0019] Figure 1 A schematic diagram of the structure of a mobile shuttle car belt roller frame connection device provided in this application;

[0020] Figure 2 This is a schematic diagram of the structure of the idler frame and idler frame support arm of the shuttle car belt;

[0021] Figure 3 This is a schematic diagram illustrating the use of the mobile shuttle car belt roller frame connection device provided in this application.

[0022] Attached diagram labels: 100-perforated crossbeam, 110-elongated hole, 200-lifting lug, 300-ring, 400-second rope buckle, 500-hook, 20-roller frame, 21-roller frame support arm, 21a-hole. Detailed Implementation

[0023] Example 1

[0024] This embodiment provides a mobile shuttle car belt idler frame connecting device, which solves the problems of long replacement time for shuttle car annular belts, complicated maintenance procedures, high labor intensity for maintenance workers, and unsafe maintenance processes, making it impossible to replace annular belts in a short time. The idler frame connecting device is as follows: Figure 1 As shown, the operating status of the idler frame connection device is as follows: Figure 3 As shown.

[0025] Please refer to Figure 1 The roller frame connecting device includes a perforated beam 100, lifting lugs 200, retaining rings 300, a second rope buckle 400, and a hook 500. The perforated beam 100 has multiple elongated holes 110 arranged at intervals along its length. Two lifting lugs 200 are provided on the same long side of the perforated beam 100, and in use, the lifting lugs 200 are located on the upper side of the perforated beam 100. The lifting lugs 200 are positioned and installed on the two separated sides of the perforated beam 100, with the center line as the boundary, and are securely welded.

[0026] The second rope buckle 400 has a retaining ring 300 connected to each end, and the two retaining rings 300 are connected to the two lifting lugs 200 respectively. Alternatively, the second rope buckle 400 can be described as being connected to the lifting lugs 200 via the retaining rings 300, with the retaining rings 300 and the lifting lugs 200 being movably connected. A buckle is provided at the end of the second rope buckle 400, and the buckle fits onto the U-shaped structure of the retaining ring 300.

[0027] Please refer to Figure 3 The hook 500 is hooked to the rope part of the second rope buckle 400, and is used in conjunction with the lifting equipment for lifting.

[0028] The shuttle belt conveyor, also known as a shuttle-type material distribution trolley conveyor belt, consists of structural components such as a tensioning device, drive device, conveyor belt, idlers, redirecting rollers, drive rollers, frame, trolley transmission equipment, traveling device, limiting device, and material guiding device. The drive roller can also be called the head roller, and the idlers are mounted on the idler frame. Depending on production needs, it can reciprocate along a specified track to achieve uniform material distribution in large and multi-compartment sintering chambers. It is a key piece of equipment in the raw material and fuel sintering process of blast furnace production. In the three-stage sintering process, the main function of the shuttle belt conveyor is to uniformly distribute material to the bottom material bin of the sintering machine, promoting uniform material distribution in the sintering machine layer, achieving scientific matching and efficient combustion, and ensuring the production supply of sinter.

[0029] Please refer to Figure 2The idler frame 20 of the shuttle belt is connected to the idler frame support arm 21 on both sides. Furthermore, all the idler frame support arms 21 located on the same long side of the shuttle belt have holes 21a, which cooperate with the elongated holes 110 of the multi-hole beam 100. When the idler frame connecting device is in use, bolts and nuts are installed at the holes 21a and the elongated holes 110, and dozens of idler frame support arms 21 are fixed by the multi-hole beam 100.

[0030] When this device is not in use, the old method of replacing the circular belt involves removing all idlers and rollers from both sides. After the circular belt is reinstalled, both sides are then restored. The head and tail rollers are installed first, and finally, the idler frames are installed one by one, followed by the idler installation. During the idler installation process, the removal of the idler frames alone takes as long as 3 hours. This is because the idler frames need to be removed before the idlers can be removed. The process of removing the idlers and idler frames is not only labor-intensive but also unsafe. The idlers are heavy and round, making them prone to rolling and injuring people.

[0031] When this device is used for changing the ring belt of a mobile shuttle belt, it can be installed sequentially from the head roller to the tail roller without removing the rollers, idler frame, and idler rollers by using the method of loosening one side and removing the other side. This makes it easy to install the head roller, upper idler frame, and tail roller sequentially.

[0032] In the old method of replacing a ring belt, the removal of the idler frame alone took as long as 3 hours. This was because the idler rollers needed to be removed before the idler frame could be removed. The process of removing the idler rollers and the idler frame was not only labor-intensive but also unsafe, as the idler rollers were heavy and round, making them prone to rolling and causing injury. The new ring belt replacement method uses a multi-hole beam 100 to fix dozens of idler frame support arms 21, and employs a whole-unit lifting and assembly method. This eliminates the need for the idler frame removal step, simplifying the ring belt replacement operation and improving replacement efficiency.

[0033] Using the roller frame connecting device of this embodiment, the perforated beam 100 fixes dozens of two-meter-long supporting roller frames 20 together. The lifting hook 500 is used to connect the lifting lug 200 of the beam. Without removing the roller frames, one side of the connecting perforated beam 100 can be lifted to complete the installation of the annular belt. This saves a lot of time for belt replacement and avoids the time-consuming, labor-intensive, and unsafe maintenance procedure of removing and installing the upper roller frames one by one. It achieves the most time-saving, labor-saving, and safe operation for the installation of annular belts.

[0034] The roller bracket connection device in this embodiment, combined with the sequential assembly of the head roller, upper roller bracket, and tail roller for replacing the annular belt, solves the problem of long replacement times for shuttle car annular belts, making it impossible to complete replacement in a short time in conjunction with scheduled maintenance. After implementing this device and method, a historic breakthrough has been achieved, reducing annular belt replacement time from the original 6-8 hours to less than 2 hours, solving the problem of long replacement times. Furthermore, it reduces the labor intensity of workers, increases the safety of maintenance operations, improves maintenance efficiency, and effectively promotes smooth production. It lays a reliable foundation for future periodic maintenance of shuttle car belts and long-term equipment stability, making it one of the best technical operation methods for annular belt replacement in mining and metallurgical equipment.

[0035] In some embodiments, the hole 21a of the roller support arm 21 is a round hole, and the elongated hole 110 of the multi-hole beam 100 is an elongated hole with a short axis and a long axis. The diameter of the round hole is equal to the length of the short axis of the elongated hole, and a bolt matching the diameter of the round hole is selected for installation.

[0036] In some embodiments, the oblong hole is elliptical, with a minor axis of 20mm. A 50mm deviation is left on each side of the center of the oblong hole. This deviation is used to measure the deviation during bolt installation of the multi-hole beam 100 and the roller support arm 21.

[0037] In some embodiments, all the holes 21a are opened at the same height of the roller support arm 21, so that the perforated beam 100 is installed parallel to the frame of the shuttle belt.

[0038] In some embodiments, the perforated beam 100 is made of channel steel, and the spacing between adjacent elongated holes of the perforated beam 100 matches the spacing between two connected roller frames, for example, the spacing between adjacent elongated holes 110 is 1000mm.

[0039] In summary, by using a multi-hole beam 100 to fix dozens of idler support arms 21 and adopting an overall lifting and assembly method, the removal of the idler support arms is eliminated. Without removing the rollers, idler supports, and idlers, the assembly can be carried out by loosening one side and disassembling the other side, sequentially assembling from the head roller to the tail roller. This method simplifies the sequential assembly of the head roller, upper idler support, and tail roller, shortens the replacement time, reduces the complicated steps of removing idlers, reduces the labor intensity of workers, increases the safety of maintenance operations, and improves maintenance efficiency.

[0040] Example 2

[0041] Based on the idler frame connection device provided in Embodiment 1, this embodiment provides a method for replacing the belt of a mobile shuttle car. The method includes sequentially performing: mounting the annular belt on the head roller, mounting the annular belt on the idler frame, and mounting the annular belt on the tail roller.

[0042] When installing the annular belt on the head roller, the following steps can be taken: Disconnect the drive roller from the reducer coupling, so that the connection between the drive roller and the reducer coupling is broken. Remove the bearing seat foot on the reducer coupling side, and loosen the bearing seat foot on the other side (only loosen, do not remove). Insert the first rope hook into the annular belt and pass it through. Connect the first rope hook to the lifting hook and lift, for example, lift 500mm-800mm. This completes the installation of the annular belt on the drive roller.

[0043] When installing the annular belt onto the idler frame 20, the following steps are taken: Fix the perforated beam 100 onto the idler frame support arm 21 on the same side of the idler frame. Connect the two ends of the second rope buckle 400 to the two lifting lugs 200 of the perforated beam 100 via retaining rings 300. Secure the perforated beam 100 to the idler frame support arm 21 with bolts and nuts. Then, loosen the screws on one side of the idler frame 20 without removing the screws. Remove the anchor bolts of the idler frame on the side where the perforated beam 100 is located. Insert the second rope buckle 400 into the annular belt and connect it to the lifting hook 500. Use the lifting equipment to lift the belt. Stop lifting after 500mm-800mm. With manual assistance, slide the annular belt onto the inside of dozens of idler frames. After successful insertion, lower the belt back to its original position. Adjust and tighten the screws on both sides of the idler frame 20. Remove the perforated beam 100.

[0044] When mounting the annular belt onto the tail pulley, the following operation can be performed: Remove the fastening bolts of the tail pulley bearing seat on one side of the annular belt, and loosen the fastening bolts of the tail pulley bearing seat on the other side, but do not remove them. Use a third rope hook to insert into the annular belt and pass it through. Connect the third rope hook to the lifting hook 500 and lift it. The lifting height is 500mm-800mm. With manual assistance, the mounting of the annular belt onto the tail pulley can be completed.

[0045] Once the above assembly is complete, adjust and tighten all bolts, restore the connection between the drive drum and the reducer coupling, and restore the tension connection of the tail drum to complete the installation of the ring belt.

[0046] The aforementioned lifting operations utilize rope buckles in conjunction with 500mm hooks. The length of the rope buckles is determined based on the width of the annular belt. The annular belt of the shuttle car is typically 1800-2000mm wide. The lengths of the first and third rope buckles are limited to greater than 2m. The first and third rope buckles can be directly connected to the lifting points, providing sufficient space for the annular belt assembly and ensuring that the front and rear annular belts are not easily jammed or scratched, thus protecting the annular belts.

[0047] Unlike the first and third rope buckles, the second rope buckle 400, when used... Figure 3 In the V-shaped configuration, the length of the second rope buckle 400 must be greater than 4m. The second rope buckle 400 connects to the two lifting lugs 200 of the multi-hole beam 100, and the upper part is connected to the lifting hook. Sufficient space is reserved for the ring belt set to ensure that the front and rear ring belts are not easily jammed or scratched, thus playing a role in protecting the ring belt.

[0048] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0049] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for replacing the belt of a mobile shuttle car, characterized in that, A mobile shuttle belt idler frame connecting device is applied. The idler frame connecting device includes a multi-hole beam, lifting lugs, retaining rings, a second rope buckle, and a hook. The multi-hole beam has multiple elongated holes arranged at intervals along its length. Two lifting lugs are provided on the same long side of the multi-hole beam. Each end of the second rope buckle is connected to a retaining ring. The two retaining rings are connected to the two lifting lugs respectively. The hook is hooked to the rope part of the second rope buckle. The idler frame of the shuttle belt is connected to idler frame support arms on both sides. All idler frame support arms located on the same long side of the shuttle belt have holes. In use, bolts and nuts are installed at the holes of the idler frame support arms and the elongated holes of the multi-hole beam. The shuttle belt includes a head roller, an idler frame, and a tail roller. The replacement method includes: Complete the assembly of the annular belt on the head roller; After the annular belt is fitted onto the head roller, the perforated beam is fixed to the idler support arm on the same side of the idler frame. The two ends of the second rope buckle are connected to the two lifting lugs of the perforated beam through the snap rings. The perforated beam and the idler support arm are fastened with bolts and nuts. Then, the screws on one side of the idler frame are loosened without removing the screws. The anchor bolts of the idler frame on the side where the perforated beam is located are removed. The second rope buckle is inserted into the annular belt and connected to the lifting hook. After the lifting equipment is lifted and stopped, the annular belt is fitted into the inside of dozens of idler frames with manual assistance. After successful fitting, the belt is lowered back to its original position. The screws on both sides of the idler frame are adjusted and tightened. The perforated beam is then removed. After removing the perforated crossbeam, complete the installation of the annular belt on the tail roller. The assembly of the annular belt on the head roller includes: disassembling the head roller from the reducer coupling, disconnecting the head roller from the reducer coupling, removing the bearing seat foot on one side of the reducer coupling, loosening the bearing seat foot on the other side (only loosening, not removing), inserting a first rope hook into the annular belt and passing it through, connecting the first rope hook to a lifting hook and lifting, thus completing the assembly of the annular belt on the head roller; The process of mounting the annular belt on the tail roller includes: removing the fastening bolts of the tail roller bearing seat on one side of the annular belt, loosening but not removing the fastening bolts of the tail roller bearing seat on the other side, inserting a third rope buckle into the annular belt and passing it through, connecting the third rope buckle to a lifting hook and lifting it, and completing the mounting of the annular belt on the tail roller with manual assistance.

2. The replacement method as described in claim 1, characterized in that, The holes in the roller support arm are round holes, and the elongated holes in the multi-hole beam are oblong holes, with the diameter of the round holes being equal to the minor axis length of the oblong holes.

3. The replacement method as described in claim 2, characterized in that, The oblong hole is elliptical, with a minor axis length of 20mm, and a 50mm deviation is left on each side from the center of the oblong hole.

4. The replacement method as described in claim 1, characterized in that, All the holes are made at the same height on the idler support arm so that the perforated beam is installed parallel to the frame of the shuttle belt.

5. The replacement method as described in claim 1, characterized in that, The perforated crossbeam is made of channel steel.

6. The replacement method as described in claim 1, characterized in that, After the annular belt is installed on the tail roller, adjust and tighten all bolts, restore the connection between the head roller and the reducer coupling, and restore the tension connection of the tail roller.

7. The replacement method as described in claim 1, characterized in that, After the second rope buckle is connected to the lifting hook, the lifting equipment lifts the crane by 500mm-800mm.

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