A method of installing a hot straightener

Abstract

The application discloses a hot straightening machine installation method and belongs to the technical field of rolling equipment installation. The method comprises the following steps: device foundation pretreatment, rack and bolt horizontal assembly, overall hoisting and positioning, frame assembly, adjustment device preparation, elevation adjustment, center line adjustment and accessory component installation. The overall hoisting is adopted after the horizontal assembly of the rack and bolts on the ground, and the hoisting height is limited. The adjustment device can be switched between L-shaped and Z-shaped. The Z-shaped adjustment device is used for adjusting the elevation of the rack bolt and the base, solving the problem of supporting and supporting in a narrow space. The L-shaped adjustment device is used for adjusting the center line of the base, and a stable supporting point is formed relying on the foundation bolt. The application has the advantages of simple process, simple tooling, hoisting adaptability and double adjustment function, improved installation efficiency and precision, reduced construction difficulty, and suitability for the installation of hot straightening machines of wide and thick plate and plate strip hot rolling production lines.

Description

Technical Field

[0001] This invention relates to the field of rolling equipment installation technology, specifically a method for installing a hot straightening machine. Background Technology

[0002] The hot straightener is the core forming equipment in a hot strip rolling production line. The conventional installation process involves first hoisting the base into place, then hoisting the frame above the base, and finally vertically threading the bolts through the frame and base from top to bottom to secure the connection. This process relies on the lifting equipment having sufficient vertical lifting height. When the effective lifting height of on-site cranes or other lifting equipment is insufficient, the bolts cannot pass through the frame and base from top to bottom, making the conventional hoisting process impossible.

[0003] Meanwhile, after the machine body bolts are hoisted into place, the elevation needs to be precisely adjusted. Because the distance between the bottom of the bolts and the equipment foundation is small, conventional jacks do not have direct support space, making the elevation adjustment difficult and the accuracy hard to guarantee. After the equipment base is in place, the center line needs to be calibrated. Conventional processes lack stable and convenient support structures, making center line adjustment inefficient and time-consuming, which seriously affects the installation progress and accuracy of the hot straightening machine, increasing the technical difficulty and cost of on-site construction. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an installation method for a hot straightening machine suitable for conditions where hoisting height is limited and adjustment space is insufficient.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A method for installing a thermal straightening machine includes the following steps:

[0007] S1. Equipment foundation pretreatment: conventional construction equipment foundation grouting and pad assembly, followed by hoisting the base of the hot straightening machine to the equipment foundation and positioning it in place;

[0008] S2. Horizontal assembly of the frame and bolts: Place the drive-side frame horizontally, insert the frame bolts horizontally into the drive-side frame and make the top nuts of the frame bolts fit against the upper plane of the drive-side frame to complete the assembly of the drive-side frame and the frame bolts. Use the same method to complete the assembly of the operating-side frame and the frame bolts.

[0009] S3. Overall hoisting and positioning: Use lifting equipment to hoist the assembled transmission side frame and frame bolts as a whole, so that the frame bolts pass through the base and extend below the base. Place the transmission side frame on the upper surface of the base and position it in place. Use the same method to hoist the assembled operating side frame and frame bolts as a whole to the upper surface of the base.

[0010] S4. Frame assembly: A connecting beam is installed between the transmission side frame and the operating side frame to form an overall frame.

[0011] S5. Preparation of adjustment device: Prepare an adjustment device including a right-angle part and a hook part. The right-angle part is equipped with a connecting bolt, and the hook part is opened with a through hole. The connecting bolt passes through the through hole and is connected to the right-angle part and the hook part with a fixing nut. The adjustment device is initially L-shaped. After the fixing nut is loosened, the hook part can rotate. After the fixing nut is tightened again, the adjustment device switches to Z-shaped.

[0012] S6. Adjust the elevation of the frame bolts; switch the adjustment device to Z-shape, with one end of the adjustment device supporting the bottom of the frame bolts and the other end serving as the top of the jack. After lifting the frame bolts to the design elevation using the jacks, tighten the nuts at both ends of the frame bolts.

[0013] S7. Base elevation adjustment: Keep the adjustment device in a Z-shape, with one end of the adjustment device supporting the lower surface of the base and the other end serving as the jack support. After lifting the base to the design elevation with the jack, adjust the shim set to fit against the lower surface of the base.

[0014] S8. Adjust the center line of the base; switch the adjustment device to L-shape, hook the anchor bolts with the hook part of the adjustment device, use shims to level the adjustment device, set a jack between the right angle part of the adjustment device and the base, push the base to the design center line position with the jack, and then tighten the anchor bolts.

[0015] S9. Installation of auxiliary components: Install the pressure device, bending roller device, roller system and roller changing device of the hot straightener to complete the installation of the hot straightener.

[0016] Furthermore, the transmission side frame and the two sets of frame bolts are horizontally assembled, and the operating side frame and the two sets of frame bolts are horizontally assembled.

[0017] Furthermore, the adjusting device is made of solid square steel.

[0018] Furthermore, after the frame bolt elevation is adjusted, the nuts at both ends of the frame bolts fit tightly against the frame.

[0019] Furthermore, after the base elevation is adjusted, the upper surface of the shim assembly and the lower surface of the base are completely and tightly fitted together.

[0020] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art:

[0021] This invention employs a method of horizontally assembling the frame and frame bolts on the ground before hoisting the entire unit. This completely solves the problem of insufficient hoisting height causing the bolts to be unable to be installed. It is suitable for hoisting in confined spaces. Through a single adjustment device that can be easily switched between L-shaped and Z-shaped adjustments, the elevation of the frame bolts, the elevation of the base, and the center line of the base can be precisely adjusted simultaneously. This not only solves the problem of the limited space at the bottom of the frame bolts and base, which prevents direct support, but also relies on the anchor bolts to form a stable force application point, significantly improving adjustment efficiency and positioning accuracy. Furthermore, the adjustment device is readily available, easy to manufacture, and has low construction costs. The overall installation process is simple and continuous, effectively shortening the installation time, reducing the technical difficulty of construction, and ensuring installation accuracy and construction safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the frame structure in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the assembly structure of the frame and frame bolts in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall hoisting structure of the frame and frame bolts in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the assembly structure of one side of the frame in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the assembly structure of the double-sided frame in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the assembly structure of the connecting beam in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the main structure of the adjusting device in an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the L-shaped structure of the adjustment device in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the Z-shaped structure of the adjustment device in an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the frame bolt elevation adjustment state in an embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the base elevation adjustment state in an embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of the adjustment state of the base centerline in an embodiment of the present invention;

[0035] Figure 14 This is an embodiment of the present invention. Figure 13 A schematic diagram of the connection structure between the adjustment device and the frame bolts.

[0036] Explanation of reference numerals in the attached drawings: 1. Equipment foundation; 2. Base; 3. Frame; 4. Frame bolts; 5. Connecting beam; 6. Adjusting device; 7. Jack; 8. Pad set; 9. Lifting equipment; 61. Right angle part; 62. Hook part; 63. Connecting bolts. Detailed Implementation

[0037] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0038] like Figures 1 to 14 As shown in the figure, this embodiment provides a method for installing a thermal straightening machine, including the following steps:

[0039] First, complete the grouting construction of equipment foundation 1, and set up the pad iron group 8 according to the design requirements. Then, hoist the base 2 of the hot straightening machine above the equipment foundation 1 to complete the initial positioning of the base 2.

[0040] Place the drive-side frame 3 horizontally and stably on the ground working area. Insert the frame bolts 4 horizontally into the preset mounting holes of the drive-side frame 3. Continue pushing the frame bolts 4 until the top nut of the frame bolts 4 is completely in contact with the upper plane of the drive-side frame 3, thus completing the overall assembly of the drive-side frame 3 and the frame bolts 4. Following the same operation method, complete the horizontal assembly of the operating-side frame 3 and the frame bolts 4.

[0041] Using lifting equipment 9, the transmission side frame 3 and frame bolts 4, which are assembled as a whole, are lifted and the components are kept stable during the lifting process. The frame bolts 4 are aligned with the bolt holes of the base 2 and inserted, so that the ends of the bolts extend below the base 2. The transmission side frame 3 is then placed stably on the upper surface of the base 2, and the transmission side frame 3 is positioned. The same process is used to lift and position the operating side frame 3 and frame bolts 4 as a whole onto the upper surface of the base 2.

[0042] A connecting beam 5 is installed at a preset position between the transmission side frame 3 and the operation side frame 3. The two side frames 3 are connected into one unit by the connecting beam 5 to form a stable overall frame structure.

[0043] The adjustment device 6 is made of solid square steel. The adjustment device 6 is divided into two parts: a right-angle part 61 and a hook part 62. A connecting bolt 63 is fixedly installed at a preset position in the right-angle part 61. A through hole is machined at the corresponding position in the hook part 62. The connecting bolt 63 is passed through the through hole in the hook part 62. The right-angle part 61 and the hook part 62 are fastened together with a fixing nut. At this time, the adjustment device 6 is L-shaped. After loosening the fixing nut, the hook part 62 can rotate around the connecting bolt 63. After rotating to the set angle, the fixing nut is tightened again, and the adjustment device 6 switches to a Z-shaped structure.

[0044] To precisely adjust the elevation of frame bolt 4, switch the adjustment device 6 to the Z-shape position, support one end of the adjustment device 6 on the bottom of frame bolt 4, and use the other end of the adjustment device 6 as the support position for jack 7. Operate jack 7 to drive the adjustment device 6 to raise frame bolt 4 to the designed elevation position. After the elevation is reached, rotate and tighten the nuts at both ends of frame bolt 4 to ensure that the nuts are tightly fitted with frame 3 to complete the fixation.

[0045] Make precise adjustments to the elevation of base 2, keeping the adjustment device 6 in a Z-shape. Support one end of the adjustment device 6 on the lower surface of base 2, and use the other end of the adjustment device 6 as the support position for the jack 7. Operate the jack 7 to drive the adjustment device 6 to lift base 2 to the designed elevation. Then adjust the height of the shim group 8 so that the upper surface of the shim group 8 is completely and tightly fitted with the lower surface of base 2, ensuring the stability of the elevation of base 2.

[0046] Make precise adjustments to the center line of base 2. Switch the adjustment device 6 to the L-shaped state and hook the front end of the hook part 62 of the adjustment device 6 onto the anchor bolts of the equipment foundation 1. Place a pad under the adjustment device 6 to keep the adjustment device 6 level. A working space is formed between the right angle part 61 of the adjustment device 6 and the side of the base 2. Place the jack 7 in this space and operate the jack 7 to push the base 2 so that the base 2 moves to the designed center line position. After the center line is reached, tighten the anchor bolts to complete the positioning of the base 2.

[0047] Finally, install all auxiliary components of the hot straightener, such as the pressure device, bending roller device, roller system, and roller changing device, to complete the installation of the hot straightener.

[0048] This invention employs a method of horizontally assembling the frame 3 and frame bolts 4 on the ground and then hoisting them as a whole. This completely solves the problem of insufficient hoisting height of the lifting equipment 9, which prevents the bolts from being installed. It is suitable for hoisting in confined spaces. Through a single adjustment device 6 that can be easily switched between L-shape and Z-shape, the elevation of the frame bolts 4, the elevation of the base 2, and the center line of the base 2 can be precisely adjusted simultaneously. This not only solves the problem of the narrow space at the bottom of the frame bolts 4 and the base 2, which cannot be directly supported, but also relies on the anchor bolts to form a stable force application point, significantly improving adjustment efficiency and positioning accuracy. Moreover, the adjustment device 6 is easy to obtain materials, simple to manufacture, and has low construction costs. The overall installation process is simple and continuous, effectively shortening the installation time, reducing the technical difficulty of construction, and ensuring installation accuracy and construction safety.

[0049] The above description is merely a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A method for installing a thermal straightening machine, characterized in that, Includes the following steps: S1. Equipment foundation pretreatment: conventional construction equipment foundation grouting and pad assembly, followed by hoisting the base of the hot straightening machine to the equipment foundation and positioning it in place; S2. Horizontal assembly of the frame and bolts: Place the drive-side frame horizontally, insert the frame bolts horizontally into the drive-side frame and make the top nuts of the frame bolts fit against the upper plane of the drive-side frame to complete the assembly of the drive-side frame and the frame bolts. Use the same method to complete the assembly of the operating-side frame and the frame bolts. S3. Overall hoisting and positioning: Use lifting equipment to hoist the assembled transmission side frame and frame bolts as a whole, so that the frame bolts pass through the base and extend below the base. Place the transmission side frame on the upper surface of the base and position it in place. Use the same method to hoist the assembled operating side frame and frame bolts as a whole to the upper surface of the base. S4. Frame assembly: A connecting beam is installed between the transmission side frame and the operating side frame to form an overall frame. S5. Preparation of adjustment device: Prepare an adjustment device including a right-angle part and a hook part. The right-angle part is equipped with a connecting bolt, and the hook part is opened with a through hole. The connecting bolt passes through the through hole and is connected to the right-angle part and the hook part with the fixing nut. The adjustment device is initially L-shaped. After the fixing nut is loosened, the hook part can rotate. After the fixing nut is tightened again, the adjustment device switches to Z-shaped. S6. Adjust the elevation of the frame bolts; switch the adjustment device to Z-shape, with one end of the adjustment device supporting the bottom of the frame bolts and the other end serving as the top of the jack. After lifting the frame bolts to the design elevation using the jacks, tighten the nuts at both ends of the frame bolts. S7. Base elevation adjustment: Keep the adjustment device in a Z-shape, with one end of the adjustment device supporting the lower surface of the base and the other end serving as the jack support. After lifting the base to the design elevation with the jack, adjust the shim set to fit against the lower surface of the base. S8. Adjust the center line of the base; Switch the adjustment device to an L-shape, hook the anchor bolts with the hook part of the adjustment device, use shims to level the adjustment device, set a jack between the right angle part of the adjustment device and the base, push the base to the design center line position with the jack, and then tighten the anchor bolts. S9. Installation of auxiliary components: Install the pressure device, bending roller device, roller system and roller changing device of the hot straightener to complete the installation of the hot straightener.

2. The installation method of a thermal straightening machine according to claim 1, characterized in that: The transmission side frame and two sets of frame bolts are horizontally assembled, and the operating side frame and two sets of frame bolts are horizontally assembled.

3. The installation method of a thermal straightening machine according to claim 1, characterized in that: The adjusting device is made of solid square steel.

4. The installation method of a thermal straightening machine according to claim 1, characterized in that: After the frame bolt elevation is adjusted, the nuts at both ends of the frame bolts fit tightly against the frame.

5. The installation method of a thermal straightening machine according to claim 1, characterized in that: After the base elevation is adjusted, the upper surface of the shim set should fit tightly against the lower surface of the base.

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