Column foot adjusting device

Abstract

The utility model provides a column foot adjusting device, which relates to the field of column construction and comprises two limiting clamping blocks for clamping a steel column. A wedge block is arranged between the limiting clamping block and the steel column, and the limiting clamping block is tangent to the inclined face of the wedge block. Jacks are arranged at the bottoms of the limiting clamping blocks. The two limiting clamping blocks are connected together in a penetrating mode through a screw rod, and the limiting clamping blocks are manufactured at the two ends of the screw rod through tightening and fixing nuts. And the limiting clamping block, the wedge block and the steel column are centered and aligned. The column foot adjusting device is easy to operate and can be used after being installed; the device is simple in structure, flexible to adjust and convenient to disassemble, and the device can be disassembled after the position of the steel column is fixed; the steel column does not need to be transformed, and the device can be reused; and materials and labor are saved.

Description

Technical Field

[0001] The utility model relates to the field of column construction, in particular to a column foot adjusting device. Background Art

[0002] With the continuous development of society and economy, large-scale industrial plants are becoming more and more numerous, the area of ​​individual plants is getting larger and larger, construction schedules are becoming increasingly tight, and energy conservation and environmental protection requirements are becoming increasingly stringent. For steel structures, the connection between the main building and the foundation is particularly important because the connection between different materials is particularly important. It has a direct impact on ensuring the integrity and reliability of the steel structure, the quality and progress of manufacturing and installation, and the entire construction period and cost.

[0003] In the current connection between column bases and concrete foundations, there are usually exposed column bases and outsourced column bases; among them, the outsourced column bases also have a form of connection between a cup-shaped foundation and a steel column. This type of column base has an obvious disadvantage, that is, after the steel column has been placed in the cup-shaped foundation, the verticality and elevation of the steel column cannot be adjusted. Jacks are generally used directly on site for adjustment, but the actual construction conditions are complicated and the direct use of jacks for adjustment is also inaccurate and difficult to adjust the elevation. For example, in publication number CN 215630086U "A double-layer cup-shaped foundation structure", the problem of the inability to adjust the verticality and elevation of the steel column after the steel column has been placed in the cup-shaped foundation in the prior art is solved, but the cup-shaped foundation structure cannot be flexibly adjusted, let alone disassembled. Utility Model Content

[0004] The utility model provides a column foot adjustment device which is easy to operate and can be used immediately after being assembled; has a simple structure, flexible adjustment, and is convenient to disassemble; the device can be disassembled after the position of the steel column is fixed; no modification is required on the steel column, and the device can be reused; and the device saves materials and labor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a column foot adjustment device, characterized by comprising two limit clamps for clamping a steel column, a wedge provided between the limit clamps and the steel column, the limit clamps being tangent to the inclined surfaces of the wedges, and a jack provided at the bottom of the limit clamps.

[0006] Preferably, the two limit clamps are connected together by screws. The two ends of the screws are tightened with nuts to fix the limit clamps. The limit clamps, wedge block and steel column are aligned in the center.

[0007] Preferably, a 10mm gap is left between the bottom of the limit clamp and the steel column. The angle between the limit clamp and the wedge is greater than 70°, the coefficient of friction between the contact surface between the limit clamp and the wedge is no greater than 0.45, and the coefficient of friction between the contact surface between the wedge and the steel column is greater than 0.6. The angle of the limit clamp is related to the coefficient of friction between the contact surface between the wedge and the steel column.

[0008] Preferably, the jack is located in the center of the limiting clamp.

[0009] Therefore, the utility model has the following beneficial effects: simple operation, ready for use after installation; simple structure, flexible adjustment, easy disassembly, the device can be disassembled after the position of the steel column is fixed; no modification is required on the steel column, and the device can be reused; saving materials and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a three-dimensional diagram of the column base adjustment device.

[0011] Figure 2 This is a side view of the column foot adjustment device.

[0012] Figure 3 This is a three-dimensional diagram of the cylindrical column base adjustment device.

[0013] In the figure: 1. Limit clamp; 2. Screw; 3. Steel column; 4. Wedge; 5. Nut; 6. Jack. DETAILED DESCRIPTION

[0014] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0015] Example 1.

[0016] This embodiment is a column foot adjustment device, such as Figure 1 As shown, two limit clamps 1 are designed to clamp the steel column 3 to ensure its stability during processing. To achieve this goal, the device includes several key components that work together to provide precise positioning and clamping.

[0017] The limit clamp 1 is the main part of the device and is used to directly clamp the steel column 3. A jack 6 is installed at the bottom of each limit clamp 1, which allows an upward force to be applied to the steel column 3 by hydraulic or mechanical means to make precise position adjustments or provide necessary support. The wedge 4 is placed between the limit clamp 1 and the steel column 3, and its inclined surface is tangent to the inclined surface of the limit clamp 1. This design helps to provide additional stability during the clamping process, and the clamping force can be adjusted by the angle of the inclined surface of the wedge (4).

[0018] A 10mm gap is left between the bottom of the limit clamp 1 and the steel column 3. This is to allow room for the jack 6 to operate and to provide a certain degree of flexibility during the clamping process. The angle between the limit clamp 1 and the wedge 4 is greater than 70°, which helps to provide greater clamping force during clamping. Furthermore, the coefficient of friction between the contact surface of the limit clamp 1 and the wedge 4 is no greater than 0.45, while the coefficient of friction between the contact surface of the wedge 4 and the steel column 3 is greater than 0.6. These parameters help ensure stability and reliability during the clamping process.

[0019] The screw rod 2 passes through the two limit clamps 1 and is tightened with a retaining nut 5 to limit the position of the limit clamps 1. This design allows the distance between the two limit clamps 1 to be adjusted as needed to accommodate steel columns 3 of different sizes. The retaining nuts 5, located at both ends of the screw rod 2, are used to fix the position of the limit clamps 1 and ensure stability when clamping the steel column 3.

[0020] The jack 6 is located at the center of the limiting clamp 1 and can provide vertical force to adjust the position of the steel column 3 or provide support.

[0021] The design of the entire device takes into account the clamping force, stability and operational flexibility, and through precise mechanical design and material selection, the safety and stability of the steel column (3) during the processing are ensured.

[0022] Example 2.

[0023] This embodiment is a column foot adjustment device, such as Figure 2 As shown, the limit clamp 1 is a structural component made of welded steel plates, which plays the role of fixing and limiting the movement of other components in the mechanical system. This design is to ensure that the mechanical components work stably in the predetermined position and prevent displacement due to vibration or impact. The screw 2 is two long rods passing through the two limit clamps 1, which are connected to the limit clamps 1 through threads. The two ends of the screw 2 can be fixed by tightening the fixing nut 5, so that the limit clamp 1 can be limited from moving outward. The fixing nut 5 is a component on the screw 2. By rotating it, it can move along the screw 2, thereby adjusting the distance between the two limit clamps 1.

[0024] A gap of 10 mm is left between the limit clamp 1 and the steel column 3 to ensure that the wedge block 4 can be placed in and that there is enough space. The wedge block 4 is a wedge-shaped component, which can be used to fix or adjust the relative position between the limit clamp 1 and the steel column 3. The existence of this gap also ensures that the wedge block 4 can generate sufficient friction between the limit clamp 1 and the steel column 3 to ensure that the wedge block 4 will not slip out during operation. The jack 6 is a hydraulic or mechanical device that can provide an upward force to support the bottom of the limit clamp 1. The limit clamp 1 is a larger structural component that includes the limit clamp 1 and other components. The role of the jack 6 here is to serve as a power source for adjusting the steel column 3. By providing an upward force, it can help adjust the position of the steel column 3 to adapt to different work requirements.

[0025] First, place two limit clamps 1 on either side of the steel column 3. The limit clamps 1 are designed with holes for threaded rods 2. Next, insert two threaded rods 2 through the reserved holes in the two limit clamps 1. One end of the threaded rod 2 is threaded to mate with a nut. By rotating the threaded rod 2, adjust the position of the limit clamps 1, ensuring that there is enough space between the limit clamps 1 and the steel column 3 to accommodate the wedge 4. After adjusting the position, tighten the fixing nut 5 to secure the threaded rod 2 in place. The fixing nut 5 prevents the threaded rod 2 from loosening due to vibration or other external forces during operation. After tightening the fixing nut 5, the positioning of the entire device is complete. At this point, the limit clamps 1 are fixed on both sides of the steel column 3, and the threaded rods 2 and nuts 5 ensure the stable position of the limit clamps 1. After positioning is completed, lift the entire device and place a jack 6 underneath it. The position of the jack 6 must ensure that it can provide effective support and adjustment force to the device. As a power source, the jack 6 can provide an upward thrust to help adjust the position of the steel column 3 or support the entire device. Ensure that the jack 6 is firmly fixed and the operation is safe. At this point, the entire device and power source are installed.

[0026] After installing the entire device, first carefully check whether the limit clamp 1 and wedge 4 are completely aligned with the steel column 3. This can be done by visual inspection and using measuring tools (such as a level and a ruler). This step ensures the accuracy and stability of subsequent operations. Confirm that all connecting parts, such as screws 2 and fixing nuts 5, are properly tightened to prevent loosening during operation. Make sure that the jack 6 is in good working condition and is placed in the correct position so that the force can be applied evenly.

[0027] Start using the device and slowly lift the jacks 6 on both sides of the device at the same time. This step needs to be performed with caution to avoid instability or damage caused by rapid lifting. During the lifting process of the jack 6, observe whether the wedge block 4 smoothly descends to the lowest position between the steel column 3 and the limit clamp 1. The movement of the wedge block 4 should be smooth and controlled. Under the action of its own weight and friction, the wedge block 4 will descend to the lowest position that the steel column 3 and the limit clamp 1 can accommodate; and as the jack 6 continues to lift, the wedge block 4 will be squeezed by the reaction force of the limit clamp 1. This squeezing will increase the pressure of the wedge block 4 on the steel column 3, thereby increasing the friction. Continue to lift the jack 6 until the pressure of the wedge block 4 on the steel column 3 reaches static equilibrium with the gravity of the steel column 3. At this point, the wedge block 4 should be stably fixed on the steel column 3.

[0028] After completing the static balance, the entire device is tightly connected under the action of force. At this time, the verticality and elevation of the column foot can be adjusted by lifting the jack 6. The specific operation is as follows: when the jack 6 on one side is lifted alone, this will adjust the verticality of the steel column 3 to keep it in the ideal vertical position; when the jacks 6 on both sides are lifted at the same time, this will adjust the overall elevation of the column to ensure that it is at the designed height. It is worth noting that since there are only two lifting jacks 6, if the steel column 3 is too slender, there may be problems with the stability of the plane during adjustment. To ensure stability, the following measures can be taken: the number of jacks 6 can be increased, and four jacks 6 can be used to improve stability; or stabilizing wedges can be added between the steel column 3 and the cup-shaped foundation in the direction where there is no limit clamp 1 when lifting to provide additional support to ensure the stability of the steel column 3 outside the plane.

[0029] During operation, ensure that the jack 6 is not overloaded. Overloading may damage the jack or destabilize the steel column 3. To increase out-of-plane stability, stabilizing wedges can be added between the steel column 3 and the cup-shaped foundation. This prevents lateral movement of the steel column 3 during adjustment. During operation, regularly check all components for wear and tightening to help prevent potential failures and accidents.

[0030] Example 3.

[0031] This embodiment is a column foot adjustment device, such as Figure 3 As shown, when the steel column 3 is cylindrical and the contact surface between the wedge 4 and the steel column 3 is an arc surface, the working principle and adjustment process of the entire device will be different. The following is a detailed explanation of this specific design.

[0032] Detailed working principle of the device: Arc-surface contact design: The arc-surface design of wedge 4 enables it to fit tightly against the side of the cylindrical steel column 3. This design provides better adaptability and contact, helps to provide uniform pressure distribution during the adjustment process, and reduces local stress concentration. Function of wedge 4: Under the lifting action of jack 6, wedge 4 slides along the arc-surface of steel column 3. This sliding helps wedge 4 fit more tightly against steel column 3, thereby increasing friction. Function of jack 6: The lifting force of jack 6 is transmitted to steel column 3 through limit clamp 1, and then acts on wedge 4. As jack 6 is lifted, wedge 4 generates a downward force component on the arc-surface of steel column 3, increasing friction. Achieving static equilibrium: As jack 6 is lifted, wedge 4 gradually descends on the arc-surface of steel column 3 until it reaches a state of static equilibrium. In this state, the pressure and friction exerted by wedge 4 on steel column 3 are sufficient to resist any external forces, ensuring the stability of steel column 3.

[0033] Detailed steps for the adjustment process: Alignment and Positioning: Before beginning adjustment, ensure that the limit clamp 1, wedge 4, and column 3 are centered. This can be done visually and using measuring tools. This is a critical step in ensuring that the wedge 4 effectively engages the column 3. Slowly Raise the Jacks: After confirming alignment, slowly raise both jacks 6 simultaneously, allowing the wedge 4 to gradually descend along the curved surface of the column 3. The raising speed must be carefully controlled to avoid instability caused by excessive speed. Monitor the Position of the Wedges 4: During the raising process, closely monitor the position of the wedges 4 and the verticality of the column 3. This can be done using a level and a verticality measuring tool. During this process, the contact area between the wedge 4 and column 3 gradually increases, increasing friction. Reaching Static Equilibrium: When the wedge 4 descends to the lowest position that can be accommodated by the limit clamp 1, and the verticality and elevation of the column 3 reach the desired values, stop raising the jacks 6. At this point, the entire assembly should be in static equilibrium. Adjust verticality and elevation: Adjust verticality: If you need to adjust the verticality of the steel column 3, you can lift the jack 6 on one side separately to tilt the steel column 3 toward the lifted side. Adjust elevation: If you need to adjust the elevation of the steel column 3, you can lift the jacks 6 on both sides at the same time to raise the steel column 3 as a whole.

[0034] Notes: Out-of-plane stability: Since the steel column 3 is cylindrical and the contact surface between the wedge 4 and the steel column 3 is an arc surface, this design may increase the problem of out-of-plane stability during the adjustment process. To ensure stability, the following measures can be considered: Use more jacks: Increase the number of jacks to provide more uniform support force. Add stabilizing wedges: Add stabilizing wedges on both sides of the steel column 3 to prevent the steel column 3 from moving lateraly during the adjustment process. Material selection of wedge 4: The material of wedge 4 should have sufficient hardness and wear resistance to ensure that it maintains its shape and function during long-term use. Strength of limit clamp 1: The limit clamp 1 needs to have sufficient strength to withstand the weight of the steel column 3 and the force generated by the jack 6. Through this design, the verticality and elevation of the steel column 3 can be effectively adjusted while ensuring the stability and safety of the entire device.

Claims

1. A column foot adjustment device, characterized in that: It comprises two limiting clamps (1) for clamping a steel column (3); a wedge block (4) is provided between the limiting clamp (1) and the steel column (3); the inclined surfaces of the limiting clamp (1) and the wedge block (4) are tangent to each other; and a jack (6) is provided at the bottom of the limiting clamp (1).

2. The column foot adjustment device according to claim 1, characterized in that: The two limiting clamping blocks (1) are connected together by means of screw rods (2).

3. The column foot adjustment device according to claim 2, characterized in that: The two ends of the screw rod (2) are fixed with nuts (5) to form the limiting clamping blocks (1).

4. The column foot adjustment device according to claim 1, characterized in that: The limiting clamp (1), the wedge block (4) and the steel column (3) are aligned in the center; a gap of 10 mm is left between the bottom of the limiting clamp (1) and the steel column (3).

5. A column foot adjustment device according to claim 1 or 4, characterized in that: The inclined angle between the limiting clamp block (1) and the wedge block (4) is greater than 70°.

6. A column foot adjustment device according to claim 1 or 4, characterized in that: The friction coefficient of the contact surface between the limiting clamp (1) and the wedge block (4) is no greater than 0.45; and the friction coefficient of the contact surface between the wedge block (4) and the steel column (3) is greater than 0.

6.

7. A column foot adjustment device according to claim 1 or 4, characterized in that: The angle of the inclined surface of the limiting clamp (1) is related to the friction coefficient of the contact surface between the wedge block (4) and the steel column (3).

8. The column foot adjustment device according to claim 1, characterized in that: The jack (6) is located in the center of the limiting clamp (1).

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