Method for replacing counterweight steel wire rope of vertical loop

Abstract

The invention relates to the technical field of equipment maintenance, in particular to a vertical loop balance weight steel wire rope replacement method which comprises the steps that a steel wire rope replacement tool and two balance weight supporting structures are manufactured; the loop car is moved to a bottom roller replacement position, and a safety pin is inserted; the two balance weight supporting frames are symmetrically and fixedly installed on the ground under the balance weight block, and the supporting beams are fixed to the upper supporting frame; the loop car is moved to the highest position, and a safety pin is inserted; dismounting a rope wheel safety cover of the counterweight steel wire rope; hoisting the counterweight steel wire rope to a stress state by using a travelling crane and a steel wire rope replacement tool; after the connecting bolts are dismounted, the counterweight steel wire rope is hoisted to the ground; hoisting the new counterweight steel wire rope to a mounting position; connecting bolts are installed; after all the balance weight steel wire ropes are replaced, a balance weight steel wire rope sheave safety cover is installed; and debugging the looping car, and mounting the support beam on the lower support frame. According to the method, the time for replacing the counterweight steel wire rope is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a method for replacing a vertical loop counterweight steel wire rope. Background Art

[0002] To ensure the continuity of the production process, continuous annealing lines, hot-dip galvanizing lines, and color coating lines are all designed with vertical loopers. The counterweight wire rope is a key component of the vertical looper. Due to long-term uninterrupted operation, the counterweight wire rope needs to be replaced regularly.

[0003] In the past, regular replacement procedures typically involved raising the looper to its highest position. A support frame was then needed underneath to support the counterweight, freeing the wire rope from stress and facilitating replacement. Once the wire rope had been replaced and stressed, the support frame was removed. The next time a replacement was needed, the support frame had to be reinstalled, repeating a cycle that was both time-consuming and labor-intensive. Furthermore, because the vertical looper is relatively high, the counterweight wire rope's lifting point is also located high, requiring a long travel time during the hoisting operation, reducing work efficiency. Summary of the Invention

[0004] In response to the above-mentioned problems, the present invention discloses a method for replacing a vertical loop counterweight wire rope to solve the problem in the prior art that each replacement of the counterweight wire rope requires installation and disassembly of the support frame, which is time-consuming and labor-intensive and reduces the operating efficiency of the crane.

[0005] A method for replacing a vertical loop counterweight wire rope, characterized by comprising the following steps:

[0006] Make a wire rope replacement tool and two counterweight support structures. The wire rope replacement tool includes a hoisting plate and a connecting wire rope fixed below the hoisting plate. The counterweight support structure includes a counterweight support frame and a support beam. The counterweight support frame includes an upper support frame, a lower support frame, and four support legs distributed in a rectangular shape. The upper support frame is connected to the top of the four support legs, and the lower support frame is connected to the middle of the four support legs.

[0007] Move the looper to the bottom roller replacement position, and after the three parties confirm the power outage, insert the safety pin. At this time, the position of the counterweight block is ready for the installation of two counterweight support structures.

[0008] The two counterweight support frames are symmetrically fixed on the ground directly below the counterweight block, and the support beam is fixed to the upper support frame with bolts;

[0009] After the three parties confirm the removal of the power supply, move the looper to the highest position and insert the safety pin. At this time, the counterweight block drops onto the support beam and the counterweight wire rope is in a stress-free state.

[0010] After the three parties confirm the power outage, remove the safety cover of the pulley of the counterweight wire rope;

[0011] Using the crane and the wire rope replacement tool, the counterweight wire rope is hoisted to a stressed state;

[0012] After removing the connecting bolts at both ends of the counterweight wire rope, use the operating crane to hoist the counterweight wire rope to the ground;

[0013] Connect the new counterweight wire rope to the wire rope replacement tooling and hoist the new counterweight wire rope to the installation location; install the connecting bolts at both ends of the new counterweight wire rope;

[0014] After all the counterweight wire ropes have been replaced, install the safety cover of the counterweight wire rope pulley;

[0015] After the three parties confirm the removal of the power supply, the looper is debugged, and after the support beam is removed from the upper support frame, the support beam is installed on the lower support frame.

[0016] In some embodiments, the hanging plate is a steel plate.

[0017] In some embodiments, a bottom plate is fixedly provided at the bottom of each of the four supporting legs, and a bolt hole is provided on each of the bottom plates.

[0018] In some embodiments, the base plate is fixed to the ground directly below the counterweight by expansion bolts.

[0019] In some of the embodiments, during the process of hoisting the counterweight steel wire rope to a stressed state using a crane and the steel wire rope changing tool, the counterweight steel wire rope is connected to the connecting steel wire rope through a Yuanbao clip.

[0020] In some embodiments, the support beam, the upper support frame, and the lower support frame are all H-shaped steels.

[0021] In some embodiments, reinforcing ribs are provided on both sides of the web of the support beam.

[0022] Compared with the prior art, the above invention has at least one of the following advantages or beneficial effects:

[0023] 1) The design of the wire rope replacement tool in the present invention greatly improves the working efficiency of the crane, thereby improving the working efficiency of replacing the wire rope.

[0024] 2) The support beam in the present invention can be installed at different positions of the counterweight support frame, thereby reducing the dismantling work of the counterweight support frame after replacing the counterweight wire rope, providing convenient conditions for the subsequent replacement of the counterweight wire rope, shortening the time for replacing the counterweight wire rope, saving labor, time and effort, and thus improving the work efficiency and safety of the replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention and its features, configurations, and advantages will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings. Like reference numerals indicate like layers throughout the drawings. The drawings are not necessarily drawn to scale, emphasis being placed on illustrating the subject matter of the present invention.

[0026] Figure 1 Flowchart of a method for replacing a vertical loop counterweight wire rope in an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the structure of the wire rope replacement tool in an embodiment of the present invention;

[0028] Figure 3 This is a front view of the support beam of the counterweight support structure located on the top of the support frame in an embodiment of the present invention;

[0029] Figure 4 A side view of a support beam of a counterweight support structure located on top of a support frame according to an embodiment of the present invention;

[0030] Figure 5 A top view of the support beam of the counterweight support structure located on top of the support frame in an embodiment of the present invention;

[0031] Figure 6 This is a front view of the support beam of the counterweight support structure in the embodiment of the present invention located in the middle of the support frame;

[0032] Figure 7 Schematic diagram of the structure of the vertical loop counterweight wire rope when replacing it in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the wire rope replacement tool during hoisting in an embodiment of the present invention;

[0034] Among them, 1. lifting plate; 2. connecting wire rope; 3. supporting legs; 4. upper supporting frame; 5. lower supporting frame; 6. bottom plate; 7. supporting beam; 8. reinforcing rib plate; 9. expansion bolt; 10. loop drum; 11. loop car; 12. hook; 13. pulley; 14. pulley safety cover; 15. counterweight; 16. loop bottom roller; 17. Yuanbao clip. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0036] like Figure 1 and 7 As shown, this embodiment discloses a method for replacing a vertical loop counterweight wire rope, the vertical loop comprising a loop body, a loop drum 10, a loop car 11, a sheave 13, a sheave safety cover 14, a counterweight 15 and a loop bottom roller 16; the loop car 11 is connected to the counterweight 15 via a counterweight wire rope (the loop car 11 and the counterweight 15 are respectively located on opposite sides of the loop body), the counterweight wire rope is wound around the sheave 13 at the top of the loop body, and a sheave safety cover 14 is provided on the sheave 13, the loop drum 10 is connected to the loop car 11 via a wire rope to drive the loop car 11 to move up and down on the loop body, and the loop bottom roller 16 is provided at the bottom of the loop body; specifically, the replacement method comprises the following steps:

[0037] Step S1, such as Figures 2 to 6 As shown, a wire rope replacement tool and two counterweight support structures are made. The wire rope replacement tool includes a lifting plate 1 and two connecting wire ropes 2 fixed under the lifting plate 1. The lifting plate 1 is a steel plate, and a lifting hole is opened in the upper middle position of the lifting plate 1; the counterweight support structure includes a counterweight support frame and a support beam 7. The counterweight support frame includes an upper support frame 4, a lower support frame 5 and four support legs 3 distributed in a rectangular shape. The upper support frame 4 is connected to the top of the four support legs 3, and the lower support frame 5 is connected to the middle of the four support legs 3; the bottom of the four support legs 3 is fixed with a base plate 6, and each base plate 6 is provided with a bolt hole so that the base plate 6 can be fixed to the ground through expansion bolts 9 later. Specifically, the support beam 7, the upper support frame 4 and the lower support frame 5 are all H-shaped steels, and bolt holes are correspondingly provided on the lower flange plate of the support beam 7, the upper flange plates of the front and rear frames of the upper support frame 4, and the upper flange plate of the lower support frame 5; reinforcing ribs 8 are provided on both sides of the web of the support beam 7.

[0038] Step S2, move the looper 11 to the bottom roller replacement position, and after the three parties (production party, inspection party and construction party) confirm the power outage sign, insert the safety pin. At this time, the counterweight block 15 is located at the upper part of the looper body, and there is enough installation space below, so as to have the conditions for installing two counterweight support structures.

[0039] Step S3, symmetrically fix the two counterweight support frames on the ground directly below the counterweight block 15, and use bolts to fix the support beam 7 to the upper support frame 4 (at this time, the installation method of the support beam 7 and the upper support frame 4 is the installation method when the counterweight wire rope is replaced); specifically, fix the base plate 6 of the counterweight support frame to the ground directly below the counterweight block 15 through expansion bolts 9.

[0040] Step S4: After the three parties (production party, inspection party and construction party) confirm the removal of the tag and power supply, the looper 11 is moved to the highest position and stopped, and the safety pin is inserted. At this time, the counterweight block 15 drops onto the two support beams 7, and the counterweight wire rope is in a stress-free state.

[0041] Step S5: After the three parties confirm the power outage, remove the rope pulley safety cover 14 of the counterweight wire rope;

[0042] Step S6, using the crane and the wire rope replacement tool to lift the counterweight wire rope to a stressed state; that is, the hook 12 of the crane is connected to the hook hole of the wire rope replacement tool, and the counterweight wire rope is connected to the connecting wire rope 2 through the ingot clip 17, such as Figure 8 As shown, the counterweight wire rope can then be hoisted to a stressed state to facilitate the removal of the connecting bolts at both ends of the counterweight wire rope.

[0043] In step S7, after removing the connecting bolts at both ends of the counterweight wire rope, the counterweight wire rope is hoisted to the ground using an operating crane.

[0044] Step S8, connect the new counterweight steel wire rope to the connecting steel wire rope 2 of the steel wire rope replacement tooling through the Yuanbao clip 17, and hoist the new counterweight steel wire rope to the installation position (the steel wire rope has left and right rotation directions, and needs to be constructed according to the drawing), and then install the connecting bolts at both ends of the new counterweight steel wire rope.

[0045] Step S9, after all the counterweight steel ropes are replaced, install the safety cover of the counterweight steel rope pulley; specifically, replace the 8 counterweight steel ropes in accordance with steps S6 to S8; then install the safety cover 14 of the pulley of each counterweight steel rope.

[0046] Step S10: Clean the site and the tools. After the three parties confirm that the power is turned off, debug the looper 11. After removing the support beam 7 from the upper support frame 4, install the support beam 7 to the lower support frame 5 with bolts (the installation method of the support beam 7 and the upper support frame 4 is the installation method of vertical looper production). Figure 6 shown.

[0047] Those skilled in the art should understand that they can implement variations by combining the prior art with the above embodiments, which will not be described in detail here. Such variations do not affect the essence of the present invention and will not be described in detail here.

[0048] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-mentioned disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A method for replacing a vertical loop counterweight wire rope, characterized in that: The steps include: Make a wire rope replacement tool and two counterweight support structures. The wire rope replacement tool includes a hoisting plate and a connecting wire rope fixed below the hoisting plate. The counterweight support structure includes a counterweight support frame and a support beam. The counterweight support frame includes an upper support frame, a lower support frame, and four support legs distributed in a rectangular shape. The upper support frame is connected to the top of the four support legs, and the lower support frame is connected to the middle of the four support legs. Move the looper to the bottom roller replacement position, and after the three parties confirm the power outage, insert the safety pin. At this time, the position of the counterweight block is ready for the installation of two counterweight support structures. The two counterweight support frames are symmetrically fixed on the ground directly below the counterweight block, and the support beam is fixed to the upper support frame with bolts; After the three parties confirm the removal of the power supply, move the looper to the highest position and insert the safety pin. At this time, the counterweight block drops onto the support beam and the counterweight wire rope is in a stress-free state. After the three parties confirm the power outage, remove the safety cover of the pulley of the counterweight wire rope; Using the crane and the wire rope replacement tool, the counterweight wire rope is hoisted to a stressed state; After removing the connecting bolts at both ends of the counterweight wire rope, use the operating crane to hoist the counterweight wire rope to the ground; Connect the new counterweight wire rope to the wire rope replacement tooling and hoist the new counterweight wire rope to the installation location; install the connecting bolts at both ends of the new counterweight wire rope; After all the counterweight wire ropes have been replaced, install the safety cover of the counterweight wire rope pulley; After the three parties confirm the removal of the power supply, the looper is debugged, and after the support beam is removed from the upper support frame, the support beam is installed on the lower support frame.

2. The method for replacing a vertical loop counterweight wire rope according to claim 1, wherein: The hanging plate is a steel plate.

3. The method for replacing a vertical loop counterweight wire rope according to claim 1, wherein: A bottom plate is fixedly provided at the bottom of the four supporting legs, and each bottom plate is provided with a bolt hole.

4. The method for replacing a vertical loop counterweight wire rope according to claim 3, wherein: The bottom plate is fixed to the ground directly below the counterweight by expansion bolts.

5. The method for replacing a vertical loop counterweight wire rope according to claim 1, wherein: In the process of using the crane and the wire rope changing tool to lift the counterweight wire rope to a stressed state, the counterweight wire rope is connected to the connecting wire rope through the Yuanbao clip.

6. The method for replacing a vertical loop counterweight wire rope according to claim 1, wherein: The support beam, the upper support frame and the lower support frame are all H-shaped steels.

7. The method for replacing a vertical loop counterweight wire rope according to claim 6, wherein: Reinforcement ribs are provided on both sides of the web of the support beam.

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