Method for quickly disassembling winding drum of coil dividing uncoiling machine

Abstract

According to the method for rapidly disassembling the winding drum of the coil dividing line uncoiler, the head of the winding drum is connected and locked through a guide chain and a steel wire rope, the winding drum is dragged in the direction of a stepping beam through a coil feeding trolley, and the uncoiler is dragged in the direction of a transmission side opposite to the direction of the stepping beam through a hydraulic rod of an automatic centering cpc. The winding drum replacing device has the beneficial effects that the operation time for replacing the winding drum can be saved, and the labor intensity is greatly reduced; the situation that quick-wear parts of the winding drum cannot be replaced under the condition that the rectangular pyramid sleeve and the sector plate cannot be detached independently is avoided, the maintenance cost of spare parts is saved, the situation that the repairing period is long when the winding drum of the uncoiler and the speed reducer are detached together is avoided, the production limitation of some steel types with high additional value and difficulty in rolling steel is eliminated, and the production benefit is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel rolling equipment, and in particular to a method for quickly disassembling a reel of a coiling line uncoiler. Background Art

[0002] The unwinder of the reeling line is used to unwind the strip and establish the post-tension of the strip. The structure is a hydraulic expansion and contraction tetrahedral cone-type unwinder. The tetrahedral cone sleeve of the reel is installed on the reel shaft, and the reel shaft and the reducer main shaft are an integrated structure. Due to abnormal force, the tetrahedral cone sleeve often cracks and the positioning plate bolts break, resulting in the reel not expanding or contracting in place and the fan-shaped plate falling off. After this accident, the shaft sleeve between the reel shaft and the tetrahedral cone sleeve is damaged and stuck in the stepped position inside the tetrahedral cone sleeve, making it impossible to disassemble and reinstall the reel and the reeling machine. The only way is to disassemble the reducer. The disassembly operation takes a long time and the repair cycle is long, causing the reeling line to be shut down for a long time, seriously affecting the output of the reeling line. It also has a negative impact on the production of some high-value-added steel grades. The production of the reeling line is unstable, which seriously affects the economic benefits. Summary of the invention

[0003] In order to solve the technical problem of difficulty in disassembling the reel together with the tetrahedral cone sleeve and the sector plate, the present invention adopts an automatic centering CPC hydraulic cylinder in cooperation with the reel replacement stand to drag the uncoiler and the reel in opposite directions, so as to quickly disassemble and replace the reel together with the tetrahedral cone sleeve and the sector plate. The present invention is suitable for the situation where the reel cannot be disassembled from the uncoiler due to abnormal or accidental conditions of the reel, which saves disassembly operation time, reduces labor intensity, saves spare parts maintenance costs, improves production efficiency, and increases economic benefits.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A method for quickly disassembling the reel of the uncoiler of the winding line, which uses a guide chain and a wire rope to connect and lock the reel head, and the winding trolley drags the reel toward the walking beam. The hydraulic rod of the automatic centering CPC drags the uncoiler toward the transmission side opposite to the walking beam. Repeat the relative dragging operation until the reel, the four-sided pyramid and the fan-shaped plate are completely pulled out of the uncoiler. The specific disassembly method is as follows:

[0006] S1. Arrange the stop position, hoist the reel changing stand onto the reeling trolley and lock it, and the reel changing stand drags the reel; the automatic centering CPC hydraulic rod is connected to the unwinder, and the automatic centering CPC hydraulic rod is extended on the operating side;

[0007] S2. Connect the guide chain and the wire rope together, connect the unconnected end of the wire rope to the head of the unwinder drum, and connect the unconnected end of the guide chain to the walking beam foundation, and control the guide chain to tighten the wire rope until the guide chain locking wire rope is tightened to the point where it cannot move;

[0008] S3. Switch the operation of the automatic centering CPC to manual operation. Manually operate the hydraulic rod of the automatic centering CPC to extend toward the transmission side by 1 / 10 each time. The hydraulic rod drags the uncoiler toward the transmission side. The uncoiler moves toward the transmission side. At the same time, operate the winding trolley to drag the reel toward the stepping beam until the hydraulic rod of the automatic centering CPC is fully extended to the transmission side. The reel is separated from the uncoiler for a distance toward the stepping beam.

[0009] S4. Manually extend the hydraulic rod of the automatic centering cpc toward the operating side again, causing the uncoiler to slide toward the walking beam, resulting in the reduction of the distance between the drum connected to the uncoiler and the walking beam foundation. The wire rope is loose and bent, and the guide chain traction wire rope is pulled toward the walking beam to tighten the drum head until the guide chain locking wire rope is tightened to the point where it cannot move.

[0010] S5. Repeat steps S3-S4 until the reel, together with the tetrahedral cone sleeve and the sector plate, is completely pulled out of the uncoiler.

[0011] Furthermore, a slide plate is provided below the uncoiler, and the uncoiler moves on the slide plate.

[0012] Furthermore, the hydraulic cylinder of the automatic centering cpc is fixed.

[0013] Furthermore, the hydraulic rod stroke of the automatic centering CPC is ±150mm.

[0014] Furthermore, the operating side and the transmission side are located on both sides of the automatic centering cpc hydraulic cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. It can save the time of replacing the reel and greatly reduce the labor intensity, avoid the situation that the reel wearing parts cannot be replaced when the quadrangular pyramid sleeve and the sector plate cannot be disassembled separately, and save the spare parts maintenance cost.

[0017] 2. It avoids the long repair cycle of disassembling the uncoiler drum and reducer together, eliminates the production restrictions of some high value-added difficult-to-roll steel grades, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a method for quickly disassembling a reel of a winding line unwinder according to the present invention.

[0019] In the figure: 1. Reeling trolley 2. Reel changing stand 3. Guide chain 4. Wire rope 5. Reel head of unwinder 6. Reel 7. Walking beam foundation 8. Automatic centering cpc 9. Unwinder 10. Slide plate 11. Hydraulic rod 12. Hydraulic cylinder 13. Transmission side direction 14. Walking beam direction 15. Operation side 16. Transmission side DETAILED DESCRIPTION

[0020] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 As shown, a method for quickly disassembling the reel of the uncoiler of the winding line is used. The method adopts a guide chain 3 and a wire rope 4 to connect and lock the reel head 5. The guide chain and the wire rope play the role of tightening the reel head. Before the dragging action starts, the guide chain 3, the wire rope 4 and the uncoiler reel head 5 are in a taut and straight state. The winding trolley 1 drags the reel 6 in the direction of the walking beam 14, and the hydraulic rod 11 of the automatic centering cpc 8 drags the uncoiler 9 in the transmission side direction 13 opposite to the walking beam direction 14. The force applied by the winding trolley 1 to the reel 6 and the force applied by the automatic centering cpc 8 to the uncoiler 9 are two opposite forces. The winding trolley 1 pulls the reel 6 in the direction of the walking beam 14, and the automatic centering cpc 8 pulls the reel 6 in the transmission side direction 13 opposite to the walking beam direction 14. 3 Pull the uncoiler 9, repeat the operation and drag it in opposite directions until the reel 6 together with the four-sided pyramid and the fan-shaped plate are completely pulled out of the uncoiler 9. Since the automatic centering cpc8 hydraulic rod 11 is limited by the stroke, the reel 6 and the uncoiler 9 cannot be pulled out at one time, which requires repeated dragging operations in two directions. During the operation, since the reel 6 is dragged in the direction of the guide chain 3, the guide chain 3 and the wire rope 4 will be in a relaxed and drooping state after a section of dragging. At this time, it is necessary to pull the guide chain 3 to restore the guide chain 3 and the wire rope 4 to a taut and straight state, and then perform the next section of dragging operation until the reel 6 together with the four-sided pyramid sleeve and the fan-shaped plate are completely pulled out of the uncoiler 9. The specific disassembly method is as follows:

[0022] S1. Arrange the stopping position, hoist the reel changing stand 2 onto the reeling trolley 1 and lock it, the reel changing stand 2 drags the reel 6, the automatic centering cpc8 is on the operating side 15 and the transmission side 16 on both sides of the hydraulic cylinder 12, the operating side 15 is close to the uncoiler 9, the hydraulic rod 11 of the automatic centering cpc8 passes through the hydraulic cylinder 12, and moves freely on the operating side 15 and the transmission side 16, the hydraulic rod 11 is connected to the uncoiler 9, before quickly disassembling the reel, the hydraulic rod of the automatic centering cpc8 is extended on the operating side 15, the total stroke of the hydraulic rod 11 is 300mm, and the hydraulic rod 11 of the automatic centering cpc8 is fully extended on the operating side 15;

[0023] S2. Connect the guide chain 3 and the wire rope 4 together, connect the unconnected end of the wire rope 4 to the reel head 5 of the unwinder 9, and connect the unconnected end of the guide chain 3 to the walking beam foundation 7, and control the guide chain 3 to tighten the wire rope 4 until the guide chain 3 locks the wire rope 4 and is tightened to the point where it cannot move;

[0024] S3. Switch the operation of the automatic centering cpc8 to manual operation, manually operate the hydraulic rod 11 of the automatic centering cpc8 to extend the transmission side 16, each time extending by about 30mm, the hydraulic rod 11 drags the uncoiler 9 in the transmission side direction 13, and the uncoiler 9 moves in the transmission side direction 13, and at the same time operate the winding trolley 1 to drag the reel 6 in the walking beam direction 14, until the hydraulic rod 11 of the automatic centering cpc8 is fully extended to the transmission side 16, that is, a total extension of 300mm, and the reel 6 is separated from the uncoiler 9 in the walking beam direction 14 by a distance;

[0025] S4. Manually extend the hydraulic rod 11 of the automatic centering cpc 8 toward the operating side 15 again, and cause the uncoiler 9 to slide toward the walking beam direction 14, and cause the distance between the drum 6 and the walking beam foundation 7 to shorten. At this time, the uncoiler 9 and the drum 6 are not completely disengaged, but are still connected together. The direction in which the uncoiler 9 is pushed by the hydraulic rod 11 is consistent with the direction in which the winding trolley 1 drags the drum 6. The winding trolley 1 does not apply a dragging force to the drum 6, but moves toward the walking beam direction 14 together with the uncoiler 9 and the drum 6. The distance between the drum 6 and the walking beam foundation 7 is shortened, and the originally taut and straightened wire rope 4 becomes loose and bent and needs to be straightened again. Pull the guide chain 3 to pull the wire rope 4 toward the walking beam direction 14 to tighten the drum head 5 until the guide chain 3 locks the wire rope 4 and tightens it to the point where it cannot move.

[0026] S5 repeats step S1 to extend the operating side 15 of the hydraulic rod 11 of the automatic centering cpc 8, and re-locks the guide chain in step S2. At the same time, observe the position of the winding trolley 1. According to the position of the winding trolley 1 and the reel 6, appropriately adjust the position of the winding trolley 1 to ensure that the winding trolley is directly under the reel 6. Repeat steps S3-S4 until the reel 6, together with the four-sided pyramid sleeve and the fan-shaped plate, is completely pulled out of the uncoiler 9.

[0027] like Figure 1 As shown, further, a slide plate 10 is provided below the uncoiler 9 , and the uncoiler 9 moves on the slide plate 10 .

[0028] like Figure 1 As shown, further, the hydraulic cylinder 12 of the automatic centering cpc8 is fixed, and the hydraulic rod 11 extends to both sides of the hydraulic cylinder 12. The two sides of the hydraulic rod 11 are the operating side 15 and the transmission side 16. The hydraulic rod 11 of the automatic centering cpc8 needs to connect these two sides when working. Therefore, unlike other hydraulic rods, the hydraulic rod 11 of the automatic centering cpc8 can be extended in both directions.

[0029] Furthermore, the stroke of the hydraulic rod 11 of the automatic centering cpc8 is ±150mm. When the uncoiler 9 is working, the automatic centering cpc8 is a device that controls the automatic centering of the steel coil and the reel 6. Therefore, the maximum total distance of the stroke of the hydraulic rod 11 of the automatic centering cpc8 is 300mm. This makes it impossible to complete the disassembly operation of the reel 6 in one go, so it is necessary to repeat the two-way dragging operation.

[0030] like Figure 1 As shown, further, the operating side 15 and the transmission side 16 are located on both sides of the automatic centering cpc8 hydraulic cylinder 12.

[0031] The following examples are implemented on the premise of the technical solution of the present invention, and provide detailed implementation methods and specific operating processes, but the protection scope of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0032] [Example]

[0033] like Figure 1 As shown, taking the 1580mm flattening and splitting machine as an example, firstly, the machine is positioned for stopping, the roll changing stand 2 is hoisted onto the roll-up trolley 1 and locked and fixed, the roll changing stand 2 drags the roll, and the automatic centering cpc8 hydraulic rod 11 is extended to the operating side 15;

[0034] like Figure 1 As shown, a 5T guide chain 3 is connected to a Φ15mm steel wire rope 4, one end of the steel wire rope 4 is connected to the drum head 5 of the unwinder 9, one end of the guide chain 3 is connected to the walking beam foundation 7, and the guide chain 3 is tightened until the steel wire rope 4 is taut and cannot move;

[0035] Switch the automatic centering cpc8 to manual mode, and close the valve station switch of the hydraulic cylinder 12 of the automatic centering cpc8 by 3 / 4, keep all operators away from the work site by 5 meters, manually operate the automatic centering cpc8 to extend the hydraulic rod toward the transmission side 16, and the automatic centering cpc8 drags the uncoiler 9 toward the transmission side 13, and at the same time operate the winding trolley 1 to drag the reel 6 toward the stepping beam direction 14;

[0036] During this period, pay attention to observe whether the relative positions of the drum shaft, the four-sided pyramid sleeve and the fan-shaped plate change, until the automatic centering cpc8 hydraulic cylinder is fully extended to the transmission side 16, and then manually extend the hydraulic rod 11 of the automatic centering cpc8 to the operating side 15, tighten the guide chain, and tighten the wire rope that is loose and bent due to dragging and pulling out the drum again until it cannot move;

[0037] Repeat the dragging process in the above two directions until the reel, the four-sided pyramid sleeve and the sector plate are completely pulled out.

Claims

1. A method for quickly disassembling a reel of a winding line unwinder, characterized in that: This method uses a guide chain and a wire rope to connect and lock the reel head. The reel-up trolley drags the reel toward the walking beam. The hydraulic rod of the automatic centering CPC drags the uncoiler toward the transmission side opposite to the walking beam. Repeat the relative dragging operation until the reel, the four-sided pyramid and the fan-shaped plate are completely pulled out of the uncoiler. The specific disassembly method is as follows: S1. Arrange the stop position, hoist the reel changing stand onto the reeling trolley and lock it, and the reel changing stand drags the reel; the automatic centering CPC hydraulic rod is connected to the unwinder, and the automatic centering CPC hydraulic rod is extended on the operating side; S2. Connect the guide chain and the wire rope together, connect the unconnected end of the wire rope to the head of the unwinder drum, and connect the unconnected end of the guide chain to the walking beam foundation, and control the guide chain to tighten the wire rope until the guide chain locking wire rope is tightened to the point where it cannot move; S3. Switch the operation of the automatic centering CPC to manual operation. Manually operate the hydraulic rod of the automatic centering CPC to extend toward the transmission side by 1 / 10 each time. The hydraulic rod drags the uncoiler toward the transmission side. The uncoiler moves toward the transmission side. At the same time, operate the winding trolley to drag the reel toward the stepping beam until the hydraulic rod of the automatic centering CPC is fully extended to the transmission side. The reel is separated from the uncoiler for a distance toward the stepping beam. S4. Manually extend the hydraulic rod of the automatic centering cpc toward the operating side again, causing the uncoiler to slide toward the walking beam, resulting in the reduction of the distance between the drum connected to the uncoiler and the walking beam foundation. The wire rope is loose and bent, and the guide chain traction wire rope is pulled toward the walking beam to tighten the drum head until the guide chain locking wire rope is tightened to the point where it cannot move. S5. Repeat steps S3-S4 until the reel, together with the tetrahedral cone sleeve and the sector plate, is completely pulled out of the uncoiler.

2. A method for quickly disassembling a reel of a winding line unwinder according to claim 1, characterized in that: A slide plate is arranged below the uncoiler, and the uncoiler moves on the slide plate.

3. A method for quickly disassembling a reel of a winding line unwinder according to claim 1, characterized in that: The hydraulic cylinder of the automatic centering cpc is fixed.

4. A method for quickly disassembling a reel of a winding line unwinder according to claim 1, characterized in that: The hydraulic rod stroke of the automatic centering CPC is ±150mm.

5. The method for quickly disassembling the reel of the unwinding machine of the winding line according to claim 1 is characterized in that: The operating side and the transmission side are located on both sides of the automatic centering cpc hydraulic cylinder.

Images