Prefabricated column positioning device and using method

Abstract

The invention relates to a prefabricated column positioning device and a using method.The prefabricated column positioning device comprises four vertical rods, fixing bases are fixed to the bottoms of the four vertical rods, transverse rods are fixedly connected between the two vertical rods on the left side and between the two vertical rods on the right side, and two longitudinal rods are slidably installed between the two transverse rods; two adjusting units are installed on each longitudinal rod in a sliding mode, a guide rod is arranged on each adjusting unit in a penetrating mode, the middle of each guide rod is fixedly sleeved with a positioning flat plate, the inner sides of the four positioning flat plates are provided with L-shaped notches, a positioning conical head is fixed to the bottom of each guide rod, and a sliding positioning assembly is installed below each positioning conical head and comprises a base. A bottom plate is slidably mounted on the base, a connecting rod is fixed on the bottom plate, a conical positioning sleeve is arranged at the top of the connecting rod, and the conical positioning sleeve is matched with the positioning conical head. The prefabricated column positioning device has the advantages of being high in positioning precision, efficient and convenient to adjust and high in adaptability.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular relates to a precast column positioning device and its usage method. Background Technology

[0002] In the construction of prefabricated concrete structures, the connection node between the precast column and the foundation cap is a critical part that affects the overall structural load-bearing capacity, seismic performance, and construction quality. The positioning accuracy of this node is extremely high.

[0003] Currently, common positioning methods mostly employ traditional shim stacking adjustment or simple single-point positioning devices. These methods have significant drawbacks: First, positioning accuracy is difficult to control consistently, heavily influenced by human operation, and fails to meet high-precision design requirements; second, the adjustment process is cumbersome and time-consuming, requiring repeated measurements and corrections, resulting in low construction efficiency; third, existing devices lack versatility, often requiring replacement or customization of specialized clamps when the cross-sectional dimensions of the precast column change or the surface flatness of the foundation cap is poor, leading to insufficient adaptability and increased construction costs and complexity. Furthermore, these methods have low safety redundancy, posing a risk of instability to the precast column during hoisting and fine-tuning.

[0004] Therefore, there is an urgent need to develop a high-efficiency positioning device and supporting construction method that can achieve rapid, accurate, multi-directional flexible adjustment and adapt to prefabricated columns of different specifications, so as to improve the construction quality and efficiency of prefabricated buildings. Summary of the Invention

[0005] The main objective of this invention is to provide a precast column positioning device and its usage method, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A precast column positioning device includes four vertical rods arranged at the four corners of a rectangle. The bottom of each vertical rod is fixed to a base, which is then fixedly connected to a foundation platform. Horizontal rods are fixedly connected between the two vertical rods on the left and the two vertical rods on the right. Two longitudinal rods are slidably installed between the two horizontal rods. Two adjusting units are slidably installed on each longitudinal rod, and a guide rod passes through each adjusting unit. A positioning plate is fixedly fitted onto the middle of each guide rod. The inner sides of the four positioning plates have L-shaped slots for limiting the four edges of the precast column. A positioning cone is fixed to the bottom of each guide rod. A sliding positioning assembly is installed on the foundation platform below each positioning cone. The sliding positioning assembly includes a base, which is fixed to the foundation platform. A base plate is slidably installed on the base, and a connecting rod is fixed to the base plate. The top of the connecting rod has a conical positioning sleeve that is adapted to the positioning cone.

[0008] Preferably, the fixing base includes a first fixing plate, and first screws are inserted through the four corners of the fixing base. The first screws are pre-embedded in the foundation platform. Each first screw is fitted with a pad and a first nut in sequence at the part that passes through the first fixing plate. Four second screws are fixed in the middle of the first fixing plate. A second fixing plate is installed above the first fixing plate. The second screws are fitted with second nuts after passing through the second fixing plate. The bottom of the vertical rod is welded and fixed to the top of the second fixing plate.

[0009] Preferably, a groove is provided in the middle of the two crossbars, and the two longitudinal bars are slidably installed in the groove. The two ends of the longitudinal bars are threaded with wing nuts.

[0010] Preferably, the adjusting unit includes an adjusting block, which is slidably sleeved on the longitudinal rod, and the guide rod passes through the adjusting block vertically. An adjusting screw is threadedly connected to one side of the adjusting block, and the adjusting screw abuts against the guide rod.

[0011] Preferably, an adjustment handle is fixed on the adjusting screw.

[0012] The present invention also provides a method for using the above-mentioned precast column positioning device, comprising the following steps:

[0013] S1. Fixed frame: The four vertical rods are securely installed in the predetermined positions on the foundation platform through the fixing seats at their bottoms;

[0014] S2. Preliminary alignment: Based on the design drawings and on-site layout, precisely align the bases of the four sliding positioning components onto the surface of the foundation platform and temporarily fix them.

[0015] S3. Bottom reference setting: According to the cross-sectional dimensions of the precast column to be installed, slide the bottom plate of each sliding positioning component along the base to make the position of the four conical positioning sleeves correspond to the design corner point position of the precast column, forming an accurate bottom positioning reference, and temporarily fix the bottom plate.

[0016] S4. Upper Adjustment and Centering: Loosen the wing nuts at both ends of the longitudinal rod, move the longitudinal rod along the slide groove of the crossbar, and drive the positioning plate and positioning cone to move back and forth; at the same time, slide the adjusting block to drive the positioning plate and positioning cone to move left and right; loosen the adjusting screw and move the guide rod up and down to adjust the height of the positioning plate; through the above multi-directional adjustment, make each positioning cone accurately aligned with the corresponding conical positioning sleeve below.

[0017] S5. Insertion, centering and benchmark locking: Insert the positioning cone into the corresponding conical positioning sleeve, and use the conical surface to achieve automatic centering and verticality correction. Tighten the wing nut and adjusting screw. At this time, the space enclosed by the L-shaped slots of the four positioning plates constitutes the precise installation benchmark for the upper part of the precast column.

[0018] S6. Lifting and fine-tuning: Use lifting equipment to lift the precast column above the positioning device and slowly lower it so that its edges initially enter the L-shaped slots of the four positioning plates; when the bottom of the precast column is close to the foundation platform, use the calibrated positioning plates to finely adjust its posture to ensure that it fits perfectly.

[0019] S7. Final Positioning and Verification: Fully position the precast column and check the fit between its bottom and the base of the sliding positioning component; use instruments such as a level and theodolite to verify the axial position, elevation, and verticality of the precast column to confirm that it meets the design requirements.

[0020] S8. Grouting and Fixing: After completing the positioning verification, grouting is carried out at the connection node between the precast column and the foundation cap. Once the grout has reached the required strength, this positioning device can be removed.

[0021] This invention provides a precast column positioning device and its usage method, which has the following beneficial effects.

[0022] 1. High positioning accuracy: Through a three-level positioning system of "sliding positioning component (bottom reference) + multi-directional adjustable frame (upper reference) + conical sleeve centering mechanism", the spatial position (X, Y, Z directions and verticality) of the precast column is precisely controlled, with an accuracy far exceeding that of traditional methods.

[0023] 2. Highly efficient and convenient adjustment: The forward and backward sliding of the longitudinal rod, the left and right sliding of the adjusting block, and the up and down movement of the guide rod are independent of each other and can all be quickly and steplessly adjusted by simply tightening or loosening the nut or screw, which greatly saves on-site adjustment time.

[0024] 3. High adaptability: By moving the base plate of the sliding positioning component and adjusting the upper frame in multiple directions, the device can adapt to precast columns with different cross-sectional dimensions, has good versatility, and reduces the number of special tools.

[0025] 4. Construction safety and reliability: The device itself forms a stable rigid positioning frame. During the hoisting and descent of the precast column, it is guided and constrained by the L-shaped groove, making it less prone to overturning. The cone sleeve centering mechanism ensures automatic correction of verticality, reducing human error and safety hazards. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the precast column positioning device of the present invention.

[0027] Figure 2 This is a schematic diagram of the sliding positioning component and guide rod of the present invention.

[0028] Figure 3 This is a schematic diagram of the structure of the fixing base of the present invention.

[0029] Figure 4This is a schematic diagram showing the connection between the longitudinal and transverse bars of the present invention.

[0030] Figure 5 This is a schematic diagram of the structure of the adjustment unit of the present invention.

[0031] Figure 6 This is a schematic diagram illustrating the use of the precast column positioning device of the present invention.

[0032] In the diagram: 1. Vertical rod; 2. Fixed base; 21. First fixed plate; 22. First screw; 23. Pad; 24. First nut; 25. Second screw; 26. Second fixed plate; 27. Second nut; 3. Horizontal rod; 31. Slide groove; 4. Vertical rod; 5. Wing nut; 6. Adjustment unit; 61. Adjustment block; 62. Adjustment screw; 63. Adjustment handle; 7. Guide rod; 8. Positioning plate; 81. L-shaped groove; 9. Positioning cone; 10. Sliding positioning assembly; 101. Base; 102. Base plate; 103. Connecting rod; 104. Conical positioning sleeve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Reference Figure 1-2 This invention provides a precast column positioning device, comprising four vertical rods 1 arranged at the four corners of a rectangle, with fixed bases 2 fixed to the bottom of the four vertical rods 1, and fixedly connected to the foundation platform through the fixed bases 2. Horizontal rods 3 are fixedly connected between the two left vertical rods 1 and the two right vertical rods 1. Two longitudinal rods 4 are slidably installed between the two horizontal rods 3, and the two longitudinal rods 4 can move closer or further apart. Two adjusting units 6 are slidably installed on each longitudinal rod 4, and the adjusting units 6 can move left and right along the longitudinal rod 4. A guide rod 7 passes through each adjusting unit 6, and the guide rod 7 can move up and down within the adjusting unit 6. A positioning plate 8 is fixedly sleeved in the middle of the guide rod 7. The four positioning plates 8 are... The side has an L-shaped slot 81 for limiting the four edges of the precast column. The bottom of the guide rod 7 is fixed with a positioning cone 9. A sliding positioning assembly 10 is installed on the foundation platform below each positioning cone 9. The sliding positioning assembly 10 includes a base 101, which is fixed on the foundation platform. A base plate 102 is slidably installed on the base 101. A connecting rod 103 is fixed on the base plate 102. The top of the connecting rod 103 has a conical positioning sleeve 104. The conical positioning sleeve 104 is adapted to the positioning cone 9. The positioning cone 9 can be automatically aligned when inserted into the conical positioning sleeve 104, thereby ensuring the verticality of the guide rod 7 and the horizontality of the positioning plate 8.

[0037] As a preferred implementation scheme, refer to Figure 3The fixing base 2 includes a first fixing plate 21. First screws 22 are inserted through the four corners of the fixing base 2. The first screws 22 are embedded in the foundation platform. Each first screw 22 is fitted with a pad 23 and a first nut 24 in sequence through the part of the first fixing plate 21. Tightening the first nut 24 can fix the first fixing plate 21 to the foundation platform. Four second screws 25 are fixed in the middle of the first fixing plate 21. A second fixing plate 26 is installed above the first fixing plate 21. The second screws 25 are fitted with second nuts 27 after passing through the second fixing plate 26. Tightening the second nut 27 can fix the second fixing plate 26 to the first fixing plate 21. The bottom of the vertical rod 1 is welded and fixed to the top of the second fixing plate 26. The stability of the vertical rod 1 can be ensured and tilting can be prevented by locking the first fixing plate 21 and the second fixing plate 26.

[0038] As a preferred implementation scheme, refer to Figure 4 The two crossbars 3 have a groove 31 in the middle, and the two longitudinal bars 4 are slidably installed in the groove 31. The two ends of the longitudinal bars 4 are threaded with wing nuts 5. When the wing nuts 5 are loosened, the two longitudinal bars 4 can move back and forth in the groove 31, which drives the positioning plate 8 and the positioning cone 9 to move back and forth. When the wing nuts 5 are tightened, the positions of the two longitudinal bars 4 can be locked and fixed.

[0039] As a preferred implementation scheme, refer to Figure 5 The adjustment unit 6 includes an adjustment block 61, which is slidably sleeved on the longitudinal rod 4. The adjustment block 61 can move left and right along the longitudinal rod 4, thereby driving the positioning plate 8 and the positioning cone 9 to move left and right. The guide rod 7 passes through the adjustment block 61 vertically. One side of the adjustment block 61 is threaded with an adjustment screw 62, which abuts against the guide rod 7. When the adjustment screw 62 is released, the guide rod 7 can move up and down, thereby driving the positioning plate 8 and the positioning cone 9 to move up and down.

[0040] As a preferred embodiment, an adjustment handle 63 is fixed on the adjustment screw 62 to facilitate turning the adjustment screw 62.

[0041] Reference Figure 6 The present invention also provides a method for using the above-mentioned precast column positioning device, comprising the following steps:

[0042] S1. Fixed frame: The four vertical rods 1 are securely installed in the predetermined positions on the foundation platform through the fixing seats 2 at their bottoms;

[0043] S2. Preliminary alignment: Based on the design drawings and on-site layout, precisely align and install the bases 101 of the four sliding positioning components 10 onto the surface of the foundation platform, and temporarily fix them.

[0044] S3. Bottom reference setting: According to the cross-sectional dimensions of the precast column to be installed, slide the bottom plate 102 of each sliding positioning component 10 along the base 101 so that the position of the four conical positioning sleeves 104 corresponds to the design corner position of the precast column, forming an accurate bottom positioning reference, and temporarily fix the bottom plate 102.

[0045] S4. Upper Adjustment and Centering: Loosen the wing nuts 5 at both ends of the longitudinal rod 4, move the longitudinal rod 4 along the slide groove 31 of the horizontal rod 3, and drive the positioning plate 8 and the positioning cone 9 to move back and forth; at the same time, slide the adjusting block 61 to drive the positioning plate 8 and the positioning cone 9 to move left and right; loosen the adjusting screw 62, and move the guide rod 7 up and down to adjust the height of the positioning plate 8; through the above multi-directional adjustment, make each positioning cone 9 accurately aligned with the corresponding conical positioning sleeve 104 below;

[0046] S5. Insertion, centering and benchmark locking: Insert the positioning cone 9 into the corresponding conical positioning sleeve 104, and use the conical surface to achieve automatic centering and verticality correction. Tighten the wing nut 5 and the adjusting screw 62. At this time, the space enclosed by the L-shaped slots 81 of the four positioning plates 8 constitutes the precise installation benchmark for the upper part of the precast column.

[0047] S6. Lifting and fine-tuning: Use lifting equipment to lift the precast column above the positioning device and slowly lower it so that its edges initially enter the L-shaped slots 81 of the four positioning plates 8; when the bottom of the precast column is close to the foundation platform, use the calibrated positioning plates 8 to finely adjust its posture to ensure that it fits perfectly.

[0048] S7. Final Positioning and Verification: Fully position the precast column and check the fit between its bottom and the base 101 of the sliding positioning component 10; use instruments such as a level and theodolite to verify the axial position, elevation and verticality of the precast column to confirm that it meets the design requirements.

[0049] S8. Grouting and Fixing: After completing the positioning verification, grouting is carried out at the connection node between the precast column and the foundation cap. Once the grout has reached the required strength, this positioning device can be removed.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A precast column positioning device, characterized in that, The structure includes four vertical rods positioned at the four corners of a rectangle. Each vertical rod has a fixed base at its bottom, which is then fixedly connected to the foundation platform. Horizontal rods are fixedly connected between the two vertical rods on the left and the two vertical rods on the right. Two longitudinal rods are slidably installed between the two horizontal rods. Two adjusting units are slidably installed on each longitudinal rod, and a guide rod passes through each adjusting unit. A positioning plate is fixedly fitted onto the middle of each guide rod. The inner sides of the four positioning plates have L-shaped slots for limiting the four edges of the precast column. A positioning cone is fixed to the bottom of each guide rod. A sliding positioning assembly is installed on the foundation platform below each positioning cone. The sliding positioning assembly includes a base, which is fixed to the foundation platform. A base plate is slidably installed on the base, and a connecting rod is fixed to the base plate. The top of the connecting rod has a conical positioning sleeve that is adapted to the positioning cone.

2. The precast column positioning device according to claim 1, characterized in that, The fixing base includes a first fixing plate, and first screws are inserted through the four corners of the fixing base. The first screws are pre-embedded in the foundation platform. Each first screw is fitted with a pad and a first nut in sequence at the part that passes through the first fixing plate. Four second screws are fixed in the middle of the first fixing plate. A second fixing plate is installed above the first fixing plate. The second screws are fitted with second nuts after passing through the second fixing plate. The bottom of the vertical rod is welded and fixed to the top of the second fixing plate.

3. The precast column positioning device according to claim 1, characterized in that, The two crossbars have a groove in the middle, and the two longitudinal bars are slidably installed in the groove. The two ends of the longitudinal bars are threaded with wing nuts.

4. A precast column positioning device according to claim 1, characterized in that, The adjustment unit includes an adjustment block, which is slidably sleeved on the longitudinal rod. The guide rod passes through the adjustment block vertically. An adjustment screw is threadedly connected to one side of the adjustment block, and the adjustment screw abuts against the guide rod.

5. A precast column positioning device according to claim 4, characterized in that, An adjustment handle is fixed to the adjusting screw.

6. A method of using a precast column positioning device according to any one of claims 1-5, characterized in that, Includes the following steps: S1. Fixed frame: The four vertical rods are securely installed in the predetermined positions on the foundation platform through the fixing seats at their bottoms; S2. Preliminary alignment: Based on the design drawings and on-site layout, precisely align the bases of the four sliding positioning components onto the surface of the foundation platform and temporarily fix them. S3. Bottom reference setting: According to the cross-sectional dimensions of the precast column to be installed, slide the bottom plate of each sliding positioning component along the base to make the position of the four conical positioning sleeves correspond to the design corner position of the precast column, forming an accurate bottom positioning reference, and temporarily fix the bottom plate. S4. Upper Adjustment and Centering: Loosen the wing nuts at both ends of the longitudinal rod, move the longitudinal rod along the slide groove of the crossbar, and drive the positioning plate and positioning cone to move back and forth; at the same time, slide the adjusting block to drive the positioning plate and positioning cone to move left and right; loosen the adjusting screw and move the guide rod up and down to adjust the height of the positioning plate; through the above multi-directional adjustment, make each positioning cone accurately aligned with the corresponding conical positioning sleeve below. S5. Insertion, centering and benchmark locking: Insert the positioning cone into the corresponding conical positioning sleeve, and use the conical surface to achieve automatic centering and verticality correction. Tighten the wing nut and adjusting screw. At this time, the space enclosed by the L-shaped slots of the four positioning plates constitutes the precise installation benchmark for the upper part of the precast column. S6. Lifting and Fine-tuning: Use lifting equipment to lift the precast column above the positioning device and slowly lower it so that its edges initially enter the L-shaped slots of the four positioning plates; when the bottom of the precast column is close to the foundation platform, use the calibrated positioning plates to finely adjust its posture to ensure that it fits perfectly. S7. Final Positioning and Verification: Fully position the precast column and check the fit between its bottom and the base of the sliding positioning component; use instruments such as a level and theodolite to verify the axial position, elevation, and verticality of the precast column to confirm that it meets the design requirements. S8. Grouting and fixing: After the positioning verification is completed, grouting is carried out at the connection node between the precast column and the foundation cap. After the grout reaches the required strength, the positioning device can be removed.

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