On-site assembly method of arc-shaped supports of sector-shaped foundation frame

Abstract

The present invention discloses an on-site assembly method for an arc-shaped support of a fan-shaped segment foundation frame, comprising the following steps: first, preparing at least four brackets and at least three gantries; then, placing at least two brackets on the ground according to the length of a single-piece arc-shaped support steel plate, and using a lifting device to lift a first single-piece arc-shaped support steel plate onto the two brackets; then, using the lifting device to lift a connecting shaft, and placing it on a corresponding position on the first single-piece arc-shaped support steel plate for connection; using the gantries to fix the connecting shaft; after the multiple connecting shafts are installed, repeating the previous lifting process to lift a second single-piece arc-shaped support steel plate, and connecting it to the connecting shaft installed on the first single-piece arc-shaped support steel plate. The present invention is simple to operate, solves the technical problem of assembling the arc-shaped support of the fan-shaped segment foundation frame when on-site tools are insufficient, and ensures safety, efficiency, and accuracy during the assembly process.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical equipment installation and construction, in particular to an on-site assembly method of an arc-shaped support of a sector-shaped foundation frame. Background Art

[0002] In a slab continuous casting machine, the fan-shaped segment base frame serves as the supporting structure on the foundation. Its function is to support the lower earring of the bending section, assemble the fan-shaped segment on the continuous casting machine according to the roller array design requirements, and ensure the centering of the fan-shaped segment. The installation accuracy of the fan-shaped segment base frame will affect the casting quality of the slab continuous casting machine. As the heaviest part of the fan-shaped segment base frame, the arc support is often not convenient for long-distance transportation. Most equipment manufacturers choose to manufacture and adjust the arc support for accuracy before shipping it in parts. This facilitates both the loading and unloading of the equipment and long-distance transportation. However, due to various conditions and constraints at the construction site, various difficulties are often encountered when assembling the arc support. For example, it is impossible to ensure the accuracy of the position of the connecting shaft structure during the assembly of the arc support. When installing the connecting shaft and the plate of the arc support, it is difficult to fix the plate, posing a safety hazard. Summary of the Invention

[0003] The present invention provides an on-site assembly method for the arc-shaped support of the fan-shaped segment foundation frame, which is simple to operate and solves the technical difficulties in assembling the arc-shaped support of the fan-shaped segment foundation frame when there are insufficient on-site tools and machinery, ensuring safety, efficiency and accuracy during the assembly process.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an on-site assembly method of an arc-shaped support of a sector base frame, comprising the following steps:

[0005] S1: Prepare at least four brackets, each bracket being provided with a limiting space for limiting a single arc-shaped support steel plate, and prepare at least three movable gantries, each gantries being equipped with a hand chain hoist;

[0006] S2: Place at least two brackets on the ground according to the length of the single-piece curved support steel plate, and use a lifting device to lift the first single-piece curved support steel plate onto the two brackets, limiting it to the limited space on the brackets;

[0007] S3: Use a lifting device to lift a connecting shaft and place it on the corresponding position of the first single-piece curved support steel plate for connection;

[0008] S4: Move a gantry to the position corresponding to the connecting shaft on one side of the first single-piece arc-shaped support steel plate, and use a hand hoist to stabilize the connecting shaft;

[0009] S5: Install the other multiple connecting shafts on the first single-piece arc-shaped support steel plate according to the operations of steps S3-S4, and loosen the connection between the lifting device and the first single-piece arc-shaped support steel plate;

[0010] S6: placing multiple additional brackets at corresponding positions on the ground on the other side of the first single-piece curved support steel plate, using a lifting device to lift the second single-piece curved support steel plate and place it on the two brackets, and connecting it to the connecting shaft installed on the first single-piece curved support steel plate;

[0011] S7: Make final precision adjustments to the arc supports of the assembled sector base frame on the four brackets. After the adjustments are completed, use a lifting device to lift it off the brackets for positioning and installation adjustments.

[0012] Preferably, the bracket includes a steel base plate, side plates arranged side by side on the upper side of the steel base plate, and a support plate arranged laterally at the lower part between the side plates. The side plates and the support plates form a limited space, and a first reinforcing diagonal brace is provided between the outer side of the side plates and the steel base plate.

[0013] Preferably, the gantry comprises a gate-shaped main body made of channel steel and second reinforcing diagonal braces arranged on both sides of the gate-shaped main body, and the hand hoist is installed in the center of the upper end of the gate-shaped main body.

[0014] Preferably, the connecting shaft is fastened to the single-piece arc-shaped support steel plate by bolts. When fastening the bolts, they are first pre-tightened diagonally until the nuts are strained, and then fastened diagonally into place.

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

[0016] Simple and commonly used steel materials at the construction site can be used to make brackets and gantries. The brackets can support and limit the single-piece arc-shaped support steel plates during the assembly of the arc-shaped support, while the gantry can fix the connecting shaft, so that the two single-piece arc-shaped support steel plates can be accurately positioned, making it convenient to connect the two single-piece arc-shaped support steel plates with the connecting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a main view of a single curved support steel plate supported by a support in the present invention;

[0018] Figure 2 This is a schematic diagram of the installation and fixation of the connecting shaft of the present invention;

[0019] Figure 3 is a structural diagram of the stent of the present invention;

[0020] Figure 4This is a main structural diagram of the gantry of the present invention;

[0021] Figure 5 It is a side structural diagram of the gantry of the present invention;

[0022] Figure 6 It is a side view schematic diagram of using a support to support a single piece of arc-shaped support steel plate in the present invention.

[0023] Reference numerals:

[0024] 1. Bracket, 11. Steel bottom plate, 12. Side plate, 13. Support plate, 14. First reinforcing diagonal brace, 2. Gantry, 21. Gate-shaped main body, 22. Second reinforcing diagonal brace, 3. Single-piece arc-shaped support steel plate, 4. Connecting shaft, 5. Hand hoist. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] like Figure 1-6 As shown, the present invention provides an embodiment of an on-site assembly method for arc-shaped supports of a segment base frame in order to solve the technical problem of assembling the arc-shaped supports of a segment base frame when there are insufficient on-site tools and equipment, and to ensure safety, efficiency, and accuracy during the assembly process: an on-site assembly method for arc-shaped supports of a segment base frame, comprising the following steps:

[0027] S1: Prepare at least four brackets 1, each bracket 1 being provided with a limiting space for limiting a single-piece arc-shaped support steel plate 3, and prepare at least three movable gantries 2, each gantries 2 being equipped with a hand chain hoist 5;

[0028] Specifically, the bracket 1 includes a steel base plate 11, side plates 12 arranged side by side on the upper side of the steel base plate 11, and a support plate 13 arranged laterally at the lower part between the side plates 12. The side plates 12 and the support plates 13 form a limited space. A first reinforcing brace 14 is provided between the outer side of the side plate 12 and the steel base plate 11. The limited space is flat. The number of brackets 1 can be adjusted as needed. At least two brackets 1 are used to support a single-piece arc-shaped support steel plate 3. The steel base plate 11, side plates 12, support plates 13 and the first reinforcing brace 14 can all be made using materials from the construction site, such as steel plates, channel steels, angle steels, etc.

[0029] In addition, the gantry 2 includes a gate-shaped main body 21 made of channel steel and a second reinforcing brace 22 arranged on both sides of the gate-shaped main body 21. The hand hoist 5 is installed at the center of the upper end of the gate-shaped main body 21. A base plate can be installed at the bottom of the gantry 2, and multiple rollers can be installed on the lower side of the base plate, so that the gantry 2 can be moved.

[0030] S2: Place at least two brackets 1 on the ground according to the length of the single-piece curved support steel plate 3, and use a lifting device to lift the first single-piece curved support steel plate 3 onto the two brackets 1, limiting it within the limited space on the bracket 1. The lifting device here can be a 500T truck crane, which is flexible to use and can be driven to the factory for construction. After the single-piece curved support steel plate 3 is placed in the bracket 1, it can be limited on both sides and will not shake;

[0031] S3: Use a lifting device to lift a connecting shaft 4, and place it on the corresponding position of the first single-piece arc-shaped support steel plate 3 for connection. The connecting shaft 4 and the single-piece arc-shaped support steel plate 3 are fastened with bolts. When tightening the bolts, they are pre-tightened in a diagonal manner until the nuts are strained, and then tightened in place in a diagonal manner. This method makes the tightening more uniform, avoids uneven force on the nuts, affects the subsequent installation accuracy, or causes individual nuts to loosen during the installation process. At the same time, attention should be paid to the direction of inserting the screw.

[0032] S4: Move a gantry 2 to a position on one side of the first single-piece curved support steel plate 3 corresponding to the connecting shaft 4, and use a hand chain hoist 5 to stabilize the connecting shaft 4. The hand chain hoist 5 prevents the single-piece curved support steel plate 3 from tipping over due to one end sinking when the car hook is released;

[0033] S5: Install multiple connecting shafts 4 on the first single-piece curved support steel plate 3 according to the operations of steps S3-S4, and loosen the connection between the lifting equipment and the first single-piece curved support steel plate 3. Generally, three connecting shafts 4 need to be installed on the single-piece curved support steel plate 3, which requires the simultaneous cooperation of three gantries 2;

[0034] S6: Place another plurality of brackets 1 at corresponding positions on the ground on the other side of the first single-piece curved support steel plate 3, use a lifting device to lift the second single-piece curved support steel plate 3 and place it on the two brackets 1, and connect it to the connecting shaft 4 installed on the first single-piece curved support steel plate 3;

[0035] S7: Make final precision adjustments to the arc supports of the assembled sector segment foundation frame on the four supports 1. After the adjustments are completed, use a lifting device to lift them away from the supports 1 for positioning and installation adjustments.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being described. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A method for assembling arc-shaped supports of a sector-shaped foundation frame on site, characterized in that: The steps include: S1: Prepare at least four brackets (1), each bracket (1) being provided with a limiting space for limiting a single arc-shaped support steel plate (3), and prepare at least three movable gantries (2), each gantries (2) being provided with a hand chain hoist (5); S2: placing at least two brackets (1) on the ground according to the length of the single-piece arc-shaped support steel plate (3), and using a lifting device to hoist the first single-piece arc-shaped support steel plate (3) onto the two brackets (1), limiting it within the limited space on the brackets (1); S3: Using a lifting device to lift a connecting shaft (4), placing it on a corresponding position on the first single-piece arc-shaped support steel plate (3) for connection; S4: moving a gantry (2) to a position corresponding to the connecting shaft (4) on one side of the first single-piece arc-shaped support steel plate (3), and stabilizing the connecting shaft (4) using a hand chain hoist (5); S5: Install the other multiple connecting shafts (4) on the first single-piece arc-shaped support steel plate (3) according to the operations of steps S3-S4, and loosen the connection between the lifting equipment and the first single-piece arc-shaped support steel plate (3); S6: placing another plurality of brackets (1) at corresponding positions on the ground on the other side of the first single-piece arc-shaped support steel plate (3), using a lifting device to lift a second single-piece arc-shaped support steel plate (3) and place it on the two brackets (1), and connecting it to the connecting shaft (4) installed on the first single-piece arc-shaped support steel plate (3); S7: Perform final precision adjustment on the arc-shaped supports of the assembled sector segment foundation frame on the four supports (1). After the adjustment, use a lifting device to lift it away from the supports (1) for positioning and installation adjustment.

2. The on-site assembly method of the arc-shaped support of the sector base frame according to claim 1 is characterized in that: The bracket (1) includes a steel base plate (11), side plates (12) arranged side by side on the upper side of the steel base plate (11), and a support plate (13) arranged transversely at the lower part between the side plates (12). The side plates (12) and the support plates (13) form a limited space, and a first reinforcing diagonal brace (14) is provided between the outer side of the side plates (12) and the steel base plate (11).

3. The on-site assembly method of the arc-shaped support of the sector base frame according to claim 1 is characterized in that: The gantry (2) comprises a gate-shaped main body (21) made of channel steel and second reinforcing braces (22) arranged on both sides of the gate-shaped main body (21), and the hand chain hoist (5) is installed at a central position on the upper end of the gate-shaped main body (21).

4. The on-site assembly method of the arc-shaped support of the sector base frame according to claim 1 is characterized in that: The connecting shaft (4) is fastened to the single-piece arc-shaped support steel plate (3) by bolts. When fastening the bolts, they are pre-tightened diagonally until the nuts are strained, and then fastened diagonally into place.

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