A method for replacing the high-speed wire PF transmission chain

Abstract

The present invention relates to a high-speed wire PF transmission chain replacement method, belonging to the technical field of steel rolling equipment maintenance process. The technical solution is: a certain length L is cut from an annular traction rail (1) and an old PF transmission chain (8) to be replaced, so that the cut traction rail and the cut old PF transmission chain form a gap (C), the new PF transmission chain to be replaced is divided into several sections, and the sections are docked with the old PF transmission chain port A (13); the cut old PF transmission chain is rotated, and the old PF transmission chain port A (13) drives the new PF transmission chain (7) to enter the cut annular traction rail, and the old PF transmission chain port B (14) exits along the inclined short rail (10); the annular traction rail (1) is restored, and the two ends of the new PF transmission chain to be replaced are docked. The beneficial effects of the present invention are: the PF transmission chain can be replaced conveniently and quickly, high-altitude work can be avoided, the replacement procedure is simplified, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The invention relates to a method for replacing a high-speed wire PF transmission chain, and belongs to the technical field of steel rolling equipment maintenance processes. Background Art

[0002] The high-speed wire rod PF drive chain is the conveyor for the coils in the high-speed wire finishing area. Suspended by a carriage on a circular traction rail, the chain enables over 60 C-shaped hooks to cycle through four stations: coil collection, bundling, weighing, and unloading. A PF drive chain failure halts all production in the wire finishing area. Because the PF drive chain is over 300 meters long, distributed over a wide area, prone to numerous failure points, and frequently used, it must be completely replaced with a new chain at the end of its lifespan. Traditional chain replacement methods have the following drawbacks:

[0003] (1) Since the annular traction rail is at a certain height from the ground, it is necessary to work at height. The replacement efficiency of the high-altitude operation is low and the continuity of the replacement operation is poor, which is not conducive to the overall maintenance of the equipment;

[0004] (2) The PF transmission chain is composed of many links, which need to be spliced ​​one by one in the air and then hung on the circular traction rail through a slide, which is time-consuming and labor-intensive. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-line PF transmission chain replacement method, which can complete the replacement of the PF transmission chain conveniently and quickly, avoid high-altitude operations, simplify the replacement procedure, improve maintenance efficiency, and solve the problems existing in the background technology.

[0006] The technical solution of the present invention is:

[0007] A method for replacing a high-speed wire PF transmission chain includes a ring traction rail and an old PF transmission chain to be replaced that is installed on the ring traction rail. The method is performed according to the following steps:

[0008] Step 1: Cut a certain length L of the circular traction rail and the old PF transmission chain that needs to be replaced and is installed on the circular traction rail, so that the cut traction rail and the cut old PF transmission chain form a gap. One end of the gap is the traction rail loading port and the old PF transmission chain port A, and the other end of the gap is the traction rail exit port and the old PF transmission chain port B;

[0009] Step 2: Fix a gantry frame under the notch and install a horizontal traction rail on the gantry frame;

[0010] Step 3: Connect the two ends of the inclined traction rail to the traction rail loading port and the horizontal traction rail respectively;

[0011] Step 4: dock the downward-sloping short rail with the traction rail exit port;

[0012] Step 5: Divide the new PF transmission chain to be replaced into several sections. Install the first section of the new PF transmission chain on the horizontal traction rail, pull it along the inclined traction rail, and then dock it with port A of the old PF transmission chain.

[0013] Step 6: Rotate the cut old PF transmission chain. Port A of the old PF transmission chain drives the first section of the new PF transmission chain onto the cut circular traction rail. Port B of the old PF transmission chain exits along the inclined short rail through the traction rail exit port.

[0014] Step 7: After connecting the second section of the new PF transmission chain to the first section of the new PF transmission chain, continue to rotate the cut old PF transmission chain until the new PF transmission chain to be replaced is completely inserted into the cut traction rail;

[0015] Step 8: Connect the traction rail cut to length L in step 1 to the notch, restore the circular traction rail, and connect the two ends of the new PF transmission chain that needs to be replaced.

[0016] Step three: The angle between the inclined traction rail and the horizontal traction rail is 30 degrees.

[0017] Described step 4: the length of the downward inclined short rail is 0.5 meter.

[0018] The step 1: the length L of the old PF transmission chain to be replaced and cut off from the annular traction rail and installed on the annular traction rail is 3 meters.

[0019] According to the present invention, a chain pre-installation station is made on the ground below the annular traction rail, and the assembled chain is divided into several sections and installed on the station; the annular traction rail is cut, and one end is connected to the ground station as the input port of the new chain, and the old chain on the corresponding traction rail is connected to the new chain; the other end serves as the output port of the old chain.

[0020] When replacing a PF drive chain, the old PF drive chain is rotated. The new chain, driven by the old chain, enters the traction rail from the input port, while the old chain exits the traction rail from the other port. Once the new chain at the pre-installation station is installed, another new chain section is installed at the station and connected to the previous new chain section. The PF drive chain continues to rotate until all new chains are replaced.

[0021] The beneficial effects of the present invention are: being able to conveniently and quickly complete the replacement of the PF transmission chain, avoiding high-altitude operations, simplifying the replacement procedure, and improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the state of the circular traction rail being cut off;

[0023] Figure 2 It is a partial schematic diagram of the cut-off traction rail and transmission chain;

[0024] Figure 3 The diagram is a cut-off diagram of the old PF transmission chain and traction rail with a length of L;

[0025] Figure 4 This is a schematic diagram of the replacement process of the new PF transmission chain;

[0026] Figure 5 This is a segmented schematic diagram of the new PF transmission chain;

[0027] In the figure: 1. Annular traction rail, 2. Traction rail loading port, 3. Traction rail exit port, 4. Inclined traction rail, 5. Pre-installation station, 6. Gantry frame, 7. First section of new PF transmission chain, 8. Old PF transmission chain to be replaced, 9. Arrow indicates the direction of rotation of PF chain, 10. Inclined short rail, 11. Horizontal traction rail, 12. New PF transmission chain after segmentation, 13. Port A of old PF transmission chain, 14. Port B of old PF transmission chain, L. Cut-off traction rail. Implementation Method

[0028] The present invention will be further described below with reference to the accompanying drawings and through examples.

[0029] Refer to the attached Figure 1-5 A method for replacing a high-speed wire PF transmission chain includes a ring traction rail 1 and an old PF transmission chain 8 to be replaced, which is installed on the ring traction rail 1. The steps are as follows:

[0030] Step 1: Cut a certain length L of the annular traction rail 1 and the old PF transmission chain 8 to be replaced, which is installed on the annular traction rail 1, so that the cut traction rail and the cut old PF transmission chain form a gap C. One end of the gap C is the traction rail loading port 2 and the old PF transmission chain port A13, and the other end of the gap C is the traction rail exit port 3 and the old PF transmission chain port B14;

[0031] Step 2: Fix a gantry frame 6 below the notch C and install a horizontal traction rail 11 on the gantry frame 6;

[0032] Step 3: dock the two ends of the inclined traction rail 4 with the traction rail loading port 2 and the horizontal traction rail 11 respectively;

[0033] Step 4: dock the downwardly inclined short rail 10 with the traction rail exit port 3;

[0034] Step 5: Divide the new PF transmission chain to be replaced into several sections, install the first section of the new PF transmission chain 7 on the horizontal traction rail 11, and pull it along the inclined traction rail 4 and dock it with the old PF transmission chain port A13;

[0035] Step 6: Rotate the cut old PF transmission chain. The old PF transmission chain port A13 drives the first section of the new PF transmission chain 7 to enter the cut circular traction rail. The old PF transmission chain port B14 exits along the inclined short rail 10 through the traction rail exit port 3.

[0036] Step 7: After docking the second section of the new PF transmission chain with the first section of the new PF transmission chain 7, continue to rotate the cut old PF transmission chain until the new PF transmission chain to be replaced is completely inserted into the cut traction rail;

[0037] Step 8: Connect the traction rail cut to a length of L in step 1 to the notch C, restore the annular traction rail 1, and connect the two ends of the new PF transmission chain that needs to be replaced.

[0038] In this embodiment, refer to the attached Figure 1-4 , PF transmission chain replacement method, specifically follow the steps below:

[0039] (1) Preparing a new chain

[0040] Assemble the new PF transmission chain to be installed into several sections, each section is 10 meters, as shown in the attached Figure 5 As shown;

[0041] (2) Make PF transmission chain pre-assembly station 5

[0042] A 12-meter-long horizontal traction rail 11 is fixed to the ground with a gantry frame 6 at a height of about 0.8 meters. The first section of the new PF transmission chain 7 is loaded from the horizontal traction rail 11 into the pre-installation station 5 along the direction of the arrow 9, as shown in the attached figure. Figure 4 As shown;

[0043] (3) Cut off the annular traction rail 1 and the old PF transmission chain 8 that needs to be replaced and is installed on the annular traction rail 1

[0044] First, the old PF transmission chain 8 installed on the annular traction rail 1 to be replaced is in a relaxed state, and then the annular traction rail 1 and the old PF transmission chain 8 installed on the annular traction rail 1 to be replaced are cut off, and the cut length L is 3 meters. At this time, two ports appear on the traction rail: the front port along the chain rotation direction 9, the traction rail loading port 2 and the traction rail exit port 3. The old PF transmission chain 8 to be replaced is cut off from a closed loop into two ends as ports: the old PF transmission chain port A12 and the old PF transmission chain port B14, as shown in the attached figure. Figure 1 、 2 , 3, 4;

[0045] (4) Use an inclined track 4 to dock with the traction rail loading port 2 and the horizontal traction rail 11 of the ground pre-installation station 5, respectively. The slope of the inclined track 4 is 30 degrees;

[0046] (5) Connect a short inclined rail 10 with a length of 0.5 m to the exit port 3 of the traction rail, as shown in the attached Figure 4 As shown;

[0047] (6) Install the first section of the new PF transmission chain 7

[0048] Connect the first section of the new PF transmission chain 7 along the inclined track 4 to the old PF transmission chain port 13, rotate the old PF chain, and drive the first section of the new PF transmission chain 7 from the traction rail loading port 2 to the intercepted traction rail by the old PF transmission chain port 13. The old PF transmission chain port B14 then exits from the traction rail exit port 3 along the inclined short track 10 to the ground, achieving the installation purpose of the old chain driving the new chain. At the same time, after the new chain on the pre-installation station 5 is installed, the segmented new PF transmission chain 12 is loaded into the pre-installation station 5 according to step (1), connected to the previous section of the PF transmission chain, and the chain is rotated until the new chain is fully loaded.

[0049] (7) Restore the circular traction track 1

[0050] Remove the inclined traction rail 4 and the inclined short rail 10, weld the traction rail cut to a length L in step 1 to the cut traction rail, restore the annular traction rail 1, and connect the two ends of the new PF transmission chain that needs to be replaced.

Claims

1. A method for replacing a high-speed line PF transmission chain, comprising an annular traction rail (1) and an old PF transmission chain (8) to be replaced and mounted on the annular traction rail (1), characterized in that: Follow these steps: Step 1: Cut a certain length L of the annular traction rail (1) and the old PF transmission chain (8) to be replaced installed on the annular traction rail (1), so that the cut traction rail and the cut old PF transmission chain form a gap (C), one end of the gap (C) is the traction rail loading port (2) and the old PF transmission chain port A (13), and the other end of the gap (C) is the traction rail exit port (3) and the old PF transmission chain port B (14); Step 2: Fix a gantry frame (6) below the notch (C), and install a horizontal traction rail (11) on the gantry frame (6); Step 3: docking the two ends of the inclined traction rail (4) with the traction rail loading port (2) and the horizontal traction rail (11) respectively; Step 4: docking the downwardly inclined short rail (10) with the traction rail exit port (3); Step 5: Divide the new PF transmission chain to be replaced into several sections, install the first section of the new PF transmission chain (7) on the horizontal traction rail (11), and pull it along the inclined traction rail (4) and dock it with the port A (13) of the old PF transmission chain; Step 6: Rotate the cut old PF transmission chain, and the old PF transmission chain port A (13) drives the first section of the new PF transmission chain (7) to enter the cut circular traction rail, and the old PF transmission chain port B (14) exits along the inclined short rail (10) through the traction rail exit port (3); Step 7: After connecting the second section of the new PF transmission chain to the first section of the new PF transmission chain (7), continue to rotate the cut old PF transmission chain until all the new PF transmission chains to be replaced are placed on the cut traction rail; Step 8: Connect the traction rail cut to a length of L in step 1 to the notch (C), restore the annular traction rail (1), and connect the two ends of the new PF transmission chain that needs to be replaced.

2. A method for replacing a high-speed wire PF transmission chain according to claim 1, characterized in that: Step three: the angle between the inclined traction rail (4) and the horizontal traction rail (11) is 30 degrees.

3. The method for replacing a high-speed wire PF transmission chain according to claim 1, characterized in that: Step 4: The length of the downwardly inclined short rail (10) is 0.5 meters.

4. The method for replacing a high-speed wire PF transmission chain according to claim 1, characterized in that: The step 1: cutting the annular traction rail (1) and the old PF transmission chain (8) to be replaced and installed on the annular traction rail (1) to a length L of 3 meters.

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