Self-adaptive centering, clamping and fixing platform

Abstract

The utility model discloses a self-adaptive centering, clamping and fixing platform, which belongs to the field of deep foundation building construction and comprises a platform chassis, a platform hole for a steel stand column to vertically penetrate through is formed in the platform chassis, and a self-centering jaw assembly is arranged at the position of the platform hole in the platform chassis. The top of the platform chassis is provided with a positioning and fixing structure matched with a steel stand column lowering verticality adjusting machine. The self-centering jaw assembly is used in cooperation with a steel stand column lowering perpendicularity adjusting machine, after the steel stand column lowering perpendicularity adjusting machine conducts perpendicularity adjusting and positioning on the steel stand column, the self-centering jaw assembly clamps and assists in clamping the steel stand column, and then filling and concrete pouring are conducted on the periphery of the steel stand column. After pouring is completed, the upper steel stand column can be moved out without waiting for solidification of concrete, the steel stand column can still be guaranteed not to deviate from the original center position when the steel stand column positioning and fixing device is used for positioning and fixing the steel stand column, the steel stand column positioning and fixing device is moved away after solidification of the concrete is completed, construction efficiency is improved, and equipment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation construction, in particular to an adaptive centering clamping and fixing platform. Background Technique

[0002] The steel column is a basic component that supports the upper structure. At the same time, it can also well support the foundation of the bottom pile foundation. After the foundation construction of the pile foundation is completely finished, an effective operation hole can be formed in this process, that is, the one-time steel column hoisting construction can be completed during the construction. With the help of the column top locator, the connection position between the steel column and the bottom and the pile foundation is fixed and reinforced. Then, the steel pipe is subjected to concrete pouring construction, and the empty holes around the steel column are backfilled. Then, the upper structure of the steel column is constructed, and the bottom structure is processed according to the sequence of earthwork construction.

[0003] Since the overall hoisting of the steel column, adjusted according to the elevation and position, and fixedly connected to the pile foundation, its position cannot be changed. Therefore, the connection position between it and the upper horizontal structure cannot be changed either. So, whether the connection position between the house and the pile foundation is in a determined state plays a very important role in the normal progress of the whole structure construction. Therefore, the construction of the steel column is an important part and key process of the top-down construction method. Since it is an underwater operation, the construction difficulty and unpredictability are relatively large. At the same time, as a vertical load-bearing member of the permanent structure, the requirement for its verticality is very high, requiring more than 1 / 600. The currently commonly used top-down steel column verticality adjustment and fixing process is as follows: using a verticality adjustment frame, after fixing the position of the steel column hole, the upper end of the steel column is adjusted and fixed with a hydraulic jack. During the construction process, it takes about 24 to 48 hours for the concrete to solidify. It is necessary to install a locator or a fixed positioning platform at the position of the pile top to better ensure the accuracy of the steel column position. After the concrete solidification is completed, the verticality adjustment frame is moved and installed as a whole.

[0004] Chinese Patent Document CN114718053A discloses an installation positioning method and installation structure for a top-down foundation pit steel column, including the following steps:

[0005] 1) Construction of the pile hole; 2) Setting a positioning casing at the top of the pile hole; 3) Installing a steel reinforcement cage at the bottom of the pile hole; 4) Pouring concrete at the bottom; 5) Installing the steel column, and at the same time, performing vertical control, elevation control and azimuth control on the steel column; 6) Removing the positioning casing. It uses the positioning casing to position and restrain the steel column, so as to ensure that the verticality, elevation and azimuth angle of the steel column meet the design standards on the premise of quickly installing the steel column.

[0006] In the prior art, two full-rotation drilling rigs are selected, or one full-rotation drilling rig is combined with one pipe ramming machine, or one full-rotation drilling rig is combined with one pipe extraction machine, or two pipe ramming machines are combined, or one pipe ramming machine is combined with one pipe extraction machine as the steel column verticality adjustment equipment. The cylindrical positioning casing is fixedly installed on the upper half of the pile hole, and then the verticality of the positioning casing is detected. The steel column is positioned by means of the positioning casing. The equipment cannot move during the waiting time for the concrete to solidify. After the concrete has completely solidified, the verticality adjustment equipment is moved, and the positioning casing is removed.

[0007] The cooperation of multiple verticality adjustment equipment results in low utilization rate of the verticality adjustment equipment, low construction efficiency, slow speed, high construction equipment and construction cost. Utility Model Content

[0008] The utility model provides an adaptive centering clamping and fixing platform, which improves construction efficiency and reduces equipment cost.

[0009] The technical solution provided by the utility model is as follows:

[0010] An adaptive centering clamping and fixing platform includes a platform chassis. A platform hole for the vertical penetration of the steel column is provided on the platform chassis. An auto-centering jaw assembly is arranged at the platform hole inside the platform chassis. A positioning and fixing structure for cooperating with the steel column lowering and verticality adjustment machine is arranged at the top of the platform chassis.

[0011] Further, the platform chassis is an adjustable leveling chassis, and the adjustable leveling chassis is provided with a leveling power element.

[0012] Further, the auto-centering jaw assembly includes a pair of auto-centering jaw blocks symmetrically arranged on both sides of the platform hole. Each auto-centering jaw block is connected with an auto-centering power element with linear expansion and contraction.

[0013] Further, an installation cavity is arranged inside the platform chassis. The auto-centering jaw blocks are arranged in the installation cavity. The top surface and / or bottom surface of the auto-centering jaw blocks are in contact with the bottom surface and top surface of the installation cavity and can slide freely. The auto-centering jaws are pushed to achieve auto-centering by the reaction force generated when the auto-centering jaw blocks are in contact with and clamp the steel column.

[0014] Further, a positioning wheel is arranged on the outer side of the auto-centering jaw block. The inner side surface of the positioning wheel is a positioning surface, and a surface structure for cooperating with the positioning surface is arranged on the outer side surface of the auto-centering jaw block.

[0015] Further, one end of the auto-centering power element is rotatably hinged to the auto-centering jaw block on the same side, and the other end is rotatably hinged to the platform chassis or the auto-centering jaw block on the other side.

[0016] Furthermore, the self - centering power element and the leveling power element are hydraulic cylinders or pneumatic cylinders.

[0017] Furthermore, an auxiliary clamping device is provided at the platform holes inside the platform chassis.

[0018] Furthermore, the positioning and fixing structure includes a platform limit groove.

[0019] Furthermore, the platform limit groove includes a front - rear guiding limit groove and a left - right guiding limit groove, and the front - rear guiding limit groove and the left - right guiding limit groove cooperate with the legs of the steel column lowering and plumb - adjusting machine.

[0020] Furthermore, the positioning and fixing structure includes positioning holes, and the positioning holes cooperate with the legs of the steel column lowering and plumb - adjusting machine and are fixed by pin shafts or bolts.

[0021] The utility model has the following beneficial effects:

[0022] The self - adaptive centering clamping and fixing platform of the utility model is used in cooperation with the steel column lowering and plumb - adjusting machine. After the steel column lowering and plumb - adjusting machine plumbs and adjusts the position of the steel column, the self - centering jaw assembly on the self - adaptive centering clamping and fixing platform clamps and assists in clamping the steel column. Then, the periphery of the steel column is filled with filler and concrete is poured. After the pouring is completed, the upper steel column lowering and plumb - adjusting machine can be removed without waiting for the concrete to solidify. The steel column is fixed in position with the self - adaptive centering clamping and fixing platform, and it can still be ensured that the steel column does not deviate from the original central position. After the concrete solidifies, the self - adaptive centering clamping and fixing platform is removed, which improves the construction efficiency and reduces the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the self - adaptive centering clamping and fixing platform of the utility model;

[0024] Figure 2 is a schematic structural view of the self - centering jaw assembly;

[0025] Figure 3 is a schematic view of the cooperation between the self - adaptive centering clamping and fixing platform of the utility model and the steel column lowering and plumb - adjusting machine;

[0026] Figure 4 is a brief schematic view of the self - centering jaw assembly;

[0027] Figure 5 is a side view of the self - adaptive centering clamping and fixing platform of the utility model;

[0028] Figure 6 is a schematic view of the automatic centering of the self - centering jaw assembly and the steel column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the technical problems, technical solutions, and advantages to be solved by the present utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0030] The present utility model provides an adaptive centering clamping and fixing platform 100, as Figures 1-6 shown, which includes a platform chassis 1. A platform hole 2 is provided on the platform chassis 1 for the vertical penetration of a steel column 5. An auto-centering jaw assembly 3 is arranged at the platform hole 2 inside the platform chassis 1. A positioning and fixing structure 4 for cooperating with the steel column lowering and plumb bob adjusting machine 200 is arranged at the top of the platform chassis 1.

[0031] The adaptive centering clamping and fixing platform 100 of the present utility model is used in cooperation with the steel column lowering and plumb bob adjusting machine 200 (also known as the steel column lowering and plumb bob adjusting and regulating machine). First, the adaptive centering clamping and fixing platform 100 is placed at the preset hole position for the steel column to be lowered, and the center positioning is basically completed. The allowable deviation in the front, rear, left, and right directions is less than 50 mm. Then, the steel column lowering and plumb bob adjusting machine 200 is hoisted by a crane and placed on the positioning and fixing structure 4 on the platform chassis 1 for positioning and fixing, so that the steel column lowering and plumb bob adjusting machine 200 is basically centered with the adaptive centering clamping and fixing platform 100 of the present utility model.

[0032] When the post-insertion method is used for construction, the adaptive centering clamping and fixing platform of the present utility model can replace the functions of the lower clamping and vertical elevation adjustment of the steel column lowering and plumb bob adjusting machine 200, thereby simplifying the main structure of the steel column lowering and plumb bob adjusting machine 200. When the upper jaw of the steel column lowering and plumb bob adjusting machine 200 is centered with the coordinate center through horizontal adjustment and the lower jaw needs to be clamped for reverse order, the auto-centering jaw assembly 3 of the present utility model is pressed against the steel column 1. Since the auto-centering jaw assembly 3 can move freely within a certain range in the internal cavity of the platform, it can automatically move to the center position relying on the reaction force of the steel column 5 to achieve the centering effect.

[0033] When the pre-insertion method is used for construction, after the steel column is adjusted by the upper steel column lowering and plumb bob adjusting machine 200 to achieve the centering coordinate and elevation, the auto-centering jaw assembly 3 of the present utility model is clamped, and the auto-centering jaw assembly 3 automatically hugs the steel column to achieve adaptability.

[0034] After a steel column is inserted, the steel column can be stably positioned by clamping with the adaptive centering clamping and fixing platform 100, so that the upper steel column lowering and plumb bob adjusting machine 200 can be removed to another working station for continuous construction. In this way, one steel column lowering and plumb bob adjusting machine 200 can cooperate with several adaptive centering clamping and fixing platforms 100 for construction, improving the construction efficiency and reducing the equipment cost.

[0035] The self - adaptive centering clamping and fixing platform of the utility model is used in cooperation with the steel column lowering and plumb - adjusting machine. After the steel column lowering and plumb - adjusting machine plumbs and positions the steel column, the self - centering jaw assembly on the self - adaptive centering clamping and fixing platform clamps to assist in clamping the steel column. Then, the periphery of the steel column is filled with filler and concrete is poured. After the pouring is completed, the upper steel column lowering and plumb - adjusting machine can be removed without waiting for the concrete to solidify. The self - adaptive centering clamping and fixing platform is used to position and fix the steel column, still ensuring that the steel column will not deviate from the original center position. After the concrete solidifies, the self - adaptive centering clamping and fixing platform is removed, improving the construction efficiency and reducing the equipment cost.

[0036] The aforementioned platform chassis 1 can be an adjustable - leveling chassis. The adjustable - leveling chassis is provided with a leveling power element 6. The angle of the adjustable - leveling chassis is adjusted through the leveling power element 6 to ensure the level of the platform chassis 1 and the verticality of the steel column 4. The leveling power element 6 can be a power element capable of linear expansion and contraction, such as an oil cylinder, a cylinder, a motor screw rod, etc.

[0037] During the process of the self - centering jaw assembly 3 of the utility model coming into contact with and clamping the steel column, it can move freely within a certain space centered on the steel column to ensure self - adaptation to the steel column. When clamping the steel column, no force will be generated on the platform during the clamping process, preventing the centering from failing.

[0038] The utility model does not limit the specific structural form of the self - centering jaw assembly 3. As long as it can achieve automatic centering, various structural forms of self - centering jigs in the prior art can be used. In one example, the self - centering jaw assembly 3 includes a pair of self - centering jaw blocks 7 symmetrically arranged on both sides of the platform hole 2. Each self - centering jaw block 7 is connected to a self - centering power element 8 capable of linear expansion and contraction. The self - centering power element 8 can be a power element capable of linear expansion and contraction, such as an oil cylinder, a cylinder, a motor screw rod, etc.

[0039] Specifically, an installation cavity 12 is arranged inside the platform chassis 1. The self - centering jaw blocks 7 are arranged inside the installation cavity 12. The top surface and / or bottom surface of the self - centering jaw blocks 7 are in contact with the bottom surface and / or top surface of the installation cavity 121 and can slide freely. During construction, when the steel column 4 reaches the coordinate center, within a specified range, whether it is at the center of the equipment or not, the self - centering jaw blocks 7 will automatically find the center of the steel column 4 and clamp it. When the self - centering jaw blocks 7 perform the clamping operation, through the reaction force generated when the self - centering jaw blocks 7 come into contact with and clamp the steel column 4, the self - centering jaw blocks 7 and the steel column 4 are pushed to complete centering, achieving the purpose of self - adaptive centering.

[0040] A positioning wheel 13 is provided on the outer side of the self-aligning jaw block 7. The inner side surface of the positioning wheel 13 is a positioning surface 14 (such as an arc surface, an inclined surface, etc.). A surface structure that cooperates with the positioning surface 14 is provided on the outer side surface of the self-aligning jaw block 12. When the self-aligning jaw block 12 is opened, through the contact friction between the outer side surface structure of the self-aligning jaw block 12 and the positioning surface 14 of the positioning wheel 13, the self-aligning jaw block 12 is opened to the initial position, achieving the purpose of the maximum through diameter.

[0041] Specifically, one end of the self-aligning power element 8 is rotatably hinged to the self-aligning jaw block 7 on the same side, and the other end can be rotatably hinged to the platform chassis 1 (as shown in (b) in the figure), or can also be rotatably hinged to the self-aligning jaw block on the other side (as shown in (a), (c), (d) in the figure). Thus, automatic centering and automatic coupling alignment are realized when clamping the steel column 5. Figure 4 as shown in (b) in the figure), or can also be rotatably hinged to the self-aligning jaw block on the other side (as shown in (a), (c), (d) in the figure). Figure 4 Thus, automatic centering and automatic coupling alignment are realized when clamping the steel column 5.

[0042] Figure 4 In the figure, (a) is the clamping jaw in the flat push and pull tightening mode, (b) is the clamping jaw in the flat push and top tightening mode, and (c), (d) are the clamping jaws in the clamp-shaped clamping mode.

[0043] To ensure that when the steel column lowering and plumb adjusting machine 200 is removed, slight friction or impact between the machine and the steel column causes displacement at the lower part of the steel column, an auxiliary clamping device 9 is provided in the platform chassis 1 at the platform hole. Before removing the upper steel column lowering and plumb adjusting machine 200, the steel column is first clamped by the auxiliary clamping device 9 to ensure that the steel column will not shift after the steel column lowering and plumb adjusting machine 200 is removed or removed.

[0044] The present utility model does not limit the specific structural form of the positioning and fixing structure 4. Two specific examples are given below:

[0045] Example 1:

[0046] The positioning and fixing structure 4 includes a platform limit groove. The platform limit groove includes a front and rear guiding limit groove 10 and a left and right guiding limit groove 11. The front and rear guiding limit groove 10 and the left and right guiding limit groove 11 cooperate with the legs of the steel column lowering and plumb adjusting machine 200, enabling the steel column lowering and plumb adjusting machine 200 to quickly and accurately move to the predetermined position, realizing limiting and fixing, and integrating the two into one.

[0047] Example 2:

[0048] The positioning and fixing structure 4 includes a positioning hole. The positioning hole cooperates with the legs of the steel column lowering and plumb adjusting machine and is fixed by a pin shaft or a bolt.

[0049] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An adaptive centering clamping and fixing platform, characterized in that, It includes a platform chassis, a platform hole is formed in the platform chassis for a steel column to pass through vertically, a self-aligning jaw assembly is arranged at the platform hole inside the platform chassis, and a positioning and fixing structure is arranged at the top of the platform chassis to cooperate with the steel column lowering and plumb bob adjusting machine.

2. The self-adaptive centering clamping and fixing platform according to claim 1, wherein The platform chassis is an adjustable-level chassis, and the adjustable-level chassis is provided with a leveling power element.

3. The self-adaptive centering clamping and fixing platform according to claim 2, wherein The self-aligning jaw assembly includes a pair of self-aligning jaw blocks symmetrically arranged on both sides of the platform hole, and each self-aligning jaw block is connected with a self-aligning power element that linearly expands and contracts.

4. The self-adaptive centering clamping and fixing platform according to claim 3, characterized in that An installation cavity is arranged inside the platform chassis, the self-aligning jaw blocks are arranged in the installation cavity, the top surface and / or the bottom surface of the self-aligning jaw blocks contact with the bottom surface and / or the top surface of the installation cavity and can slide freely, and the self-aligning jaws are pushed to achieve automatic alignment by the reaction force generated when the self-aligning jaw blocks contact and clamp the steel column.

5. The self-adaptive centering clamping and fixing platform according to claim 4, wherein A positioning wheel is arranged on the outer side of the self-aligning jaw block, the inner side surface of the positioning wheel is a positioning surface, and a surface structure matching with the positioning surface is arranged on the outer side surface of the self-aligning jaw block.

6. The self - adaptive centering clamping and fixing platform according to claim 5, characterized in that, One end of the self-aligning power element is rotatably hinged to the self-aligning jaw block on the same side, and the other end is rotatably hinged to the platform chassis or the self-aligning jaw block on the other side.

7. The self-adaptive centering clamping and fixing platform according to claim 6, wherein The self-aligning power element and the leveling power element are oil cylinders or air cylinders.

8. The self-adaptive centering clamping and fixing platform according to any one of claims 1-7, characterized in that, An auxiliary clamping device is arranged at the platform hole inside the platform chassis.

9. The self-adaptive centering clamping and fixing platform according to claim 8, wherein The positioning and fixing structure includes a platform limiting groove.

10. The self - adaptive centering clamping and fixing platform according to claim 9, characterized in that, The platform limiting groove includes a front-back guiding limiting groove and a left-right guiding limiting groove, and the front-back guiding limiting groove and the left-right guiding limiting groove cooperate with the legs of the steel column lowering and plumb bob adjusting machine; The positioning and fixing structure includes a positioning hole, the positioning hole cooperates with the legs of the steel column lowering and plumb bob adjusting machine, and is fixed by a pin shaft or a bolt.

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