Steel pipe positioning device and steel pipe concrete mounting method

Abstract

The invention provides a steel pipe positioning device and a steel pipe concrete mounting method, and belongs to the technical field of steel pipe concrete mounting. The steel pipe positioning device comprises a base, a plurality of limiting assemblies, a plurality of swing plates and a plurality of swing mechanisms; the base is mounted on the outer side of a foundation pit; the multiple limiting assemblies are arranged around the foundation pit and arranged on the base at intervals in the circumferential direction of the foundation pit. When the steel pipe moves to the position above the foundation pit, the limiting assembly is suitable for abutting against the peripheral wall of the steel pipe; the multiple swing plates are arranged around the foundation pit and arranged on the base in the circumferential direction of the foundation pit at intervals. One end of each swing plate is hinged with the base, and the other end is provided with a rolling component; the multiple swing mechanisms are arranged around the foundation pit and are in corresponding transmission connection with the multiple swing plates. The multiple swing mechanisms are connected through a synchronous driving component. According to the steel pipe positioning device and the steel pipe concrete mounting method, the steel pipe can be accurately positioned in the mounting process, the steel pipe is prevented from shaking, and the mounting precision is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of steel pipe concrete installation, and more specifically, relates to a steel pipe positioning device and a steel pipe concrete installation method. Background Art

[0002] Steel tube concrete is a composite structure of steel tube and concrete. It combines steel tube and concrete for use together to improve the overall performance of the structure. Therefore, steel tube concrete has good bearing capacity and seismic resistance. The steel tube in steel tube concrete usually adopts seamless steel tube or welded steel tube, and concrete is filled inside the steel tube.

[0003] At present, during the installation of steel pipe concrete, the processed steel pipe is first transported to the construction site, and the steel pipe is hoisted into the excavated foundation pit using lifting equipment. Then the installation position of the steel pipe is precisely adjusted to ensure that the axial direction of the steel pipe is perpendicular to the horizontal plane. Finally, concrete is poured inside the steel pipe and between the steel pipe and the foundation pit.

[0004] The inventors found that in the process of using lifting equipment to hoist steel pipes into the foundation pit, the steel pipes will shake due to inertia, making it difficult to quickly and accurately put the steel pipes into place, and the error after installation is large; in addition, the steel pipes are prone to scratching against the side walls of the foundation pit during the shaking process, causing the soil layer on the side walls of the foundation pit to fall off, thereby affecting the installation of the steel pipes. Summary of the invention

[0005] The purpose of the present application is to provide a steel pipe positioning device and a steel pipe concrete installation method to solve the technical problems existing in the prior art that the steel pipe in the steel pipe concrete is difficult to accurately position during installation and the error is large after installation.

[0006] To achieve the above purpose, the technical solution adopted in this application is: A steel pipe positioning device is provided, comprising: A base, used for installation outside the foundation pit; A plurality of limit assemblies are arranged around the foundation pit and are arranged on the base at intervals along the circumference of the foundation pit; when the steel pipe moves to the top of the foundation pit, the limit assemblies are suitable for abutting against the outer peripheral wall of the steel pipe to limit the movement of the steel pipe in the radial direction; A plurality of swing plates are arranged around the foundation pit and are arranged on the base at intervals along the circumference of the foundation pit; one end of each swing plate is hinged to the base, and the other end is provided with a rolling member, and the rolling member is used to abut against the outer peripheral surface of the steel pipe; and A plurality of swing mechanisms are arranged around the foundation pit and are correspondingly connected to the plurality of swing plates in a transmission manner; the plurality of swing mechanisms are connected through a synchronous driving component to drive the plurality of swing plates to swing simultaneously.

[0007] In a possible implementation, the swing mechanism includes: A worm is rotatably connected to the base along the hinge axis of the swing plate; the worm is transmission-connected to the synchronous drive member so that the worm is suitable for rotating around its own axis; A worm wheel is rotatably connected to the base and meshed with the worm; the worm wheel has a threaded hole extending through the worm wheel along its axial direction; and A screw rod, threadedly connected to the threaded hole; Wherein, a connecting structure is provided between the screw rod and the swing plate.

[0008] In a possible implementation, the synchronous driving component includes: a plurality of universal shafts, respectively arranged between two adjacent worm gears along the circumference of the foundation pit, with both ends of each universal shaft respectively connected to two adjacent worm gears to synchronize the rotation of each worm gear; and The driving motor is arranged on the base and is drivingly connected to one of the universal shafts so as to be suitable for driving the plurality of universal shafts to rotate.

[0009] In a possible implementation, the connection structure includes: Two sliding grooves are arranged in parallel on a side of the swing plate facing away from the foundation pit, and the opening direction of each sliding groove is parallel to the hinge axis of the swing plate; and The sliding rod is arranged at one end of the screw rod facing the swing plate and is inserted into the two sliding grooves.

[0010] In a possible implementation, the rolling component includes: A rotating shaft rotatably connected to the swing plate; and The roller is sleeved on the rotating shaft. When the synchronous driving assembly drives the swing plate to swing toward the foundation pit, the roller is suitable for abutting against the outer peripheral wall of the steel pipe.

[0011] In a possible implementation, the roller includes two conical wheels, and the small-diameter ends of the two conical wheels are butt-jointed.

[0012] In a possible implementation, the limiting component includes: A bracket, fixedly arranged on the upper side of the base; and A positioning plate, fixedly arranged at the upper end of the bracket, wherein the side of the positioning plate facing the foundation pit has an arc-shaped groove suitable for the steel pipe part to enter; Wherein, a buffer structure is provided in the arc-shaped groove. When the steel pipe partially enters the arc-shaped groove, the buffer structure is suitable for abutting against the outer peripheral wall of the steel pipe to buffer the force acting when the steel pipe moves radially.

[0013] In a possible implementation, the buffer structure includes: an air bag, arranged in the arc-shaped groove, for contacting with the outer peripheral wall of the steel pipe to buffer the force when the steel pipe moves radially; and An air pump is arranged on the support and is used for inputting gas into the airbag.

[0014] In a possible implementation, the base includes: Two split seats are spliced ​​to form an annular structure suitable for surrounding the outside of the foundation pit; one of the split seats has a plurality of thread grooves, and the other split seat has a plurality of alignment holes corresponding to the plurality of thread grooves one by one, and each of the alignment holes is inserted with a fixing bolt suitable for threaded connection with the corresponding thread groove.

[0015] In the embodiment of the present application, when installing the steel pipe, the base is installed on the outside of the pre-excavated foundation pit, and then the steel pipe is hoisted to the upper side of the foundation pit. Through a number of limit assemblies, the movement of the steel pipe in the radial direction can be limited, and then a preliminary positioning of the steel pipe is performed; by controlling the synchronous driving component to drive a plurality of swinging mechanisms connected to a plurality of swinging plates, the plurality of swinging plates can be driven to swing toward the steel pipe at the same time until the rolling members on each swinging plate are connected to the outer peripheral wall of the steel pipe; at this time, the plurality of swinging plates can make the axial direction of the steel pipe coincide with the axial direction of the foundation pit, so that the steel pipe can only move along its own axial direction, avoiding the steel pipe from moving in its own radial direction due to inertia, and achieving precise positioning; each rolling member can also reduce the resistance of the steel pipe when it moves.

[0016] Compared with the prior art, the steel pipe positioning device provided in the embodiment of the present application can accurately position the steel pipe during its installation, thereby preventing the steel pipe from shaking and improving the installation accuracy. In addition, it also prevents the steel pipe from scratching the inner wall of the foundation pit, thereby ensuring that the installation of the steel pipe is not affected.

[0017] The technical solution adopted in the present application also provides a method for installing concrete-filled steel pipes, based on the steel pipe positioning device described in any one of the foregoing contents, comprising the following steps: A. Install the base outside the excavated foundation pit; B. using a lifting device to lift the steel pipe to the top of the foundation pit, and moving the steel pipe between a plurality of the limit assemblies to limit the movement of the steel pipe in a radial direction; C. controlling the plurality of swing mechanisms to drive the plurality of swing plates to swing simultaneously by the synchronous driving member until the rolling member on each swing plate is connected to the steel pipe; D. Control the lifting equipment to slowly lower the steel pipe, so that the steel pipe moves along the axial direction of the foundation pit toward the inner bottom surface of the foundation pit until the bottom end of the steel pipe is in contact with the inner bottom surface of the foundation pit; E. Fixing the bottom end of the steel pipe; F. pouring concrete into the steel pipe and into the gap between the steel pipe and the foundation pit; G. After the concrete solidifies, control the synchronous drive assembly to drive the plurality of swing plates to separate from the steel pipe.

[0018] The beneficial effects of the steel pipe concrete installation method provided in this embodiment are the same as the beneficial effects of the aforementioned steel pipe positioning device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the steel pipe positioning device provided in the embodiment of the present invention Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of the steel pipe positioning device provided in the embodiment of the present invention Figure 2 ; Figure 3 A schematic diagram of the top view of the steel pipe positioning device provided in an embodiment of the present invention; Figure 4 for Figure 1 Schematic diagram of the enlarged structure of the middle I region; Figure 5 for Figure 2 Schematic diagram of the enlarged structure of the middle II region; Figure 6 A schematic diagram of the three-dimensional structure of the swing plate used in the embodiment of the present invention; Among them, the reference numerals in the figure are: 1. Base; 11. Split seat; 12. Fixing bolt; 2. Limiting assembly; 21. Bracket; 22. Positioning plate; 3. Swinging plate; 4. Rolling member; 41. Rotating shaft; 42. Roller; 5. Swinging mechanism; 51. Worm; 52. Worm wheel; 53. Screw; 6. Synchronous drive member; 61. Universal shaft; 62. Drive motor; 7. Connecting structure; 71. Sliding groove; 72. Sliding rod; 8. Buffer structure; 81. Airbag; 82. Air pump; 9. Steel pipe; a1. Foundation pit. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Please also read Figures 1 to 6 The steel pipe positioning device and the steel pipe concrete installation method provided by the present application are now described. The steel pipe positioning device comprises a base 1, a plurality of limit assemblies 2, a plurality of swing plates 3 and a plurality of swing mechanisms 5.

[0026] The base 1 is used to be installed outside the foundation pit a1; the base 1 can be made of metal material and can be fixed to the outside of the foundation pit a1 by anchor bolts; the shape of the base 1 can be a circular ring structure or a polygonal ring structure, and the construction personnel can adjust it according to the actual installation environment.

[0027] A plurality of limit assemblies 2 are arranged around the foundation pit a1, and are arranged on the base 1 at intervals along the circumference of the foundation pit a1; when the steel pipe 9 moves to the top of the foundation pit a1, the limit assemblies 2 are suitable for abutting against the outer wall of the steel pipe 9 to limit the movement of the steel pipe 9 in the radial direction; the limit assemblies 2; the limit assemblies 2 can adopt flexible limit elements such as air bags 81 or springs. When the steel pipe 9 shakes due to inertia during the hoisting process, the limit assemblies 2 can buffer the radial inertia force of the steel pipe 9 to reduce the shaking of the steel pipe 9.

[0028] A plurality of swing plates 3 are arranged around the foundation pit a1, and are arranged on the base 1 at intervals along the circumference of the foundation pit a1; one end of each swing plate 3 is hinged to the base 1, and the other end is provided with a rolling member 4, and the rolling member 4 is used to abut against the outer peripheral surface of the steel pipe 9; the rolling member 4 can adopt elements such as rollers or steel balls to reduce the resistance of the steel pipe 9 when it moves up and down.

[0029] Multiple swing mechanisms 5 are arranged around the foundation pit a1 and are correspondingly connected to the multiple swing plates 3; the swing mechanism 5 can adopt a rotating motor, a linear oil cylinder or a linear air cylinder, etc., to drive the swing plate 3 to swing; the multiple swing mechanisms 5 are connected by a synchronous driving component 6, so as to be suitable for driving the multiple swing plates 3 to swing simultaneously; the synchronous driving component 6 can adopt a chain transmission component or a universal transmission component to connect the multiple swing mechanisms 5, so as to achieve the purpose of making the multiple swing mechanisms 5 operate synchronously.

[0030] In the embodiment of the present application, when installing the steel pipe 9, the base 1 is installed on the outside of the pre-excavated foundation pit a1, and then the steel pipe 9 is hoisted to the upper side of the foundation pit a1. Through a number of limit assemblies 2, the steel pipe 9 can be limited to move in the radial direction, and then a preliminary positioning of the steel pipe 9 is performed; by controlling the synchronous drive component 6 to drive a plurality of swing mechanisms 5 connected to a plurality of swing plates 3, the plurality of swing plates 3 can be driven to swing toward the steel pipe 9 at the same time until the rolling members 4 on each swing plate 3 are connected to the outer peripheral wall of the steel pipe 9; at this time, the plurality of swing plates 3 can make the axial direction of the steel pipe 9 coincide with the axial direction of the foundation pit a1, so that the steel pipe 9 can only move along its own axial direction, avoiding the steel pipe 9 from moving in its own radial direction due to inertia, and achieving precise positioning; each rolling member 4 can also reduce the resistance of the steel pipe 9 when it moves.

[0031] Compared with the prior art, the steel pipe positioning device provided in the embodiment of the present application can accurately position the steel pipe 9 during the installation process of the steel pipe 9, avoid shaking of the steel pipe 9, and improve the installation accuracy; in addition, it also avoids scratches between the steel pipe 9 and the inner wall of the foundation pit a1, ensuring that the installation of the steel pipe 9 is not affected.

[0032] In some embodiments, the swing mechanism 5 can be implemented as follows: Figure 1 , Figure 2 , Figure 3 and Figure 5 The structure shown, see Figure 1 , Figure 2 , Figure 3 and Figure 5 The swing mechanism 5 includes a worm 51 , a worm wheel 52 and a screw 53 .

[0033] The worm 51 is rotatably connected to the base 1 along the hinge axis of the swing plate 3, and the axis of the worm 51 is parallel to the hinge axis of the swing plate 3; the worm 51 is transmission-connected to the synchronous drive member 6 so that the worm 51 is suitable for rotating around its own axis.

[0034] The worm wheel 52 is rotatably connected to the base 1 and meshed with the worm 51 . The axial direction of the worm wheel 52 is perpendicular to the hinge axis of the swing plate 3 . The worm wheel 52 has a threaded hole that penetrates along its own axial direction.

[0035] The screw 53 is threadedly connected to the threaded hole; when the synchronous drive component 6 drives the worm 51 to rotate, the worm 51 can drive the worm wheel 52 to rotate through the meshing connection. When the worm wheel 52 rotates, it can drive the threaded hole to rotate synchronously, and the threaded hole in turn drives the threaded screw 53 to move forward and backward along its own axial direction.

[0036] A connection structure 7 is provided between the screw rod 53 and the swing plate 3 . The connection structure 7 may be a rotating structure or a hinged structure, and can be converted into the swing of the swing plate 3 when the screw rod 53 moves forward and backward.

[0037] In some embodiments, the synchronous drive member 6 may be configured as follows: Figure 1 , Figure 2 , Figure 3 and Figure 5 The structure shown, see Figure 1 , Figure 2 , Figure 3 and Figure 5 The synchronous driving component 6 includes a plurality of cardan shafts 61 and a driving motor 62 .

[0038] Multiple universal shafts 61 are respectively arranged between two adjacent worm gears 51 along the circumference of the foundation pit a1, and the two ends of each universal shaft 61 are respectively connected to the two adjacent worm gears 51 to synchronize the rotation of each worm gear 51; the universal shaft 61 adopts a retractable model, and the retractable universal shaft 61 is a mechanical component that can adjust the length within a certain range, and is mainly used to connect two worm gears 51 that are not in the same straight line to transmit torque and rotational motion; the retractable universal shaft 61 is usually composed of a connecting shaft, a universal joint and a retractable part, the connecting shaft is used to connect the two worm gears 51, the universal joint is used to change the transmission direction, and the retractable part can adjust the transmission length within a certain range, thereby improving the applicability of the equipment.

[0039] The driving motor 62 is arranged on the base 1 and is drivingly connected to one of the universal shafts 61 so as to be suitable for driving multiple universal shafts 61 to rotate. The rotation of multiple universal shafts 61 can drive multiple worms 51 to rotate, so that each corresponding swing mechanism 5 drives the swing plate 3 to swing.

[0040] The above technical solution can utilize a driving motor 62 to drive multiple worms 51 to rotate through multiple universal shafts 61, thereby saving the overall cost of the equipment.

[0041] In some embodiments, the connection structure 7 may be as follows: Figure 1 , Figure 2 , Figure 5 and Figure 6 The structure shown, see Figure 1 , Figure 2 , Figure 5 and Figure 6 The connecting structure 7 includes two sliding grooves 71 and a sliding rod 72 .

[0042] The two sliding grooves 71 are arranged in parallel on the side of the swing plate 3 facing away from the foundation pit a1 , and the opening direction of each sliding groove 71 is parallel to the hinge axis of the swing plate 3 .

[0043] The sliding rod 72 is disposed at one end of the screw rod 53 facing the swing plate 3 and inserted into the two sliding grooves 71 . The axial direction of the sliding rod 72 is perpendicular to the axial direction of the screw rod 53 and parallel to the hinge axis of the swing plate 3 .

[0044] When the worm gear 52 drives the screw rod 53 to move along its own axial direction, the sliding rod 72 can rotate and translate in the sliding groove 71. Through the above structure, the sliding groove 71 and the sliding rod 72 cooperate to convert the forward and backward movement of the screw rod 53 into the swinging of the swing plate 3.

[0045] In some embodiments, the rolling member 4 may be Figure 1 , Figure 2 , Figure 3 and Figure 6 The structure shown, see Figure 1 , Figure 2 , Figure 3 and Figure 6 The rolling member 4 includes a rotating shaft 41 and a roller 42 .

[0046] The rotating shaft 41 is rotatably connected to the swing plate 3 , and a rotating shaft bearing 41 is disposed between the rotating shaft 41 and the swing plate 3 .

[0047] The roller 42 is sleeved on the rotating shaft 41. When the synchronous drive assembly drives the swing plate 3 to swing toward the foundation pit a1, the roller 42 is suitable for abutting against the outer peripheral wall of the steel pipe 9; when the swing components on each swing plate 3 are connected to the outer peripheral wall of the steel pipe 9, the roller 42 on each swing component can be rollingly connected with the outer peripheral wall of the steel pipe 9 to achieve resistance when the steel pipe 9 moves along its own axis.

[0048] In some embodiments, the roller 42 may be Figure 1 , Figure 2 and Figure 6 The structure shown, see Figure 1 , Figure 2 and Figure 6 The roller 42 includes two conical wheels, and the small-diameter ends of the two conical wheels are butt-jointed; the axial direction of the roller 42 is perpendicular to the axial direction of the steel pipe 9, and the conical surfaces of the two conical wheels are suitable for abutting against the outer peripheral wall of the steel pipe 9. The two conical wheels can limit the movement of the steel pipe 9 along its own radial direction.

[0049] The outer circumferences of the two conical wheels may also be provided with an anti-skid coating to enhance the ability to limit the radial movement of the steel pipe 9 .

[0050] In some embodiments, the above-mentioned limiting member can be used as follows Figure 1 , Figure 2 and Figure 3 The structure shown, see Figure 1 , Figure 2 and Figure 3 The limiting assembly 2 includes a bracket 21 and a positioning plate 22 .

[0051] The bracket 21 is fixedly arranged on the upper side of the base 1 . The bracket 21 can be made of a metal pipe. The bottom of the bracket 21 is fixedly connected to the base 1 by welding.

[0052] The positioning plate 22 is fixedly arranged at the upper end of the bracket 21, and the side of the positioning plate 22 facing the foundation pit a1 has an arc-shaped groove suitable for partial entry of the steel pipe 9; the curvature of the arc-shaped groove can be adapted according to the diameter of the steel pipe 9 to be installed; when the steel pipe 9 enters the arc-shaped groove, the arc surface of the arc-shaped groove can be connected with the outer wall of the steel pipe 9, thereby preventing the positioning plate 22 from causing damage to the outer wall of the steel pipe 9.

[0053] A buffer structure 8 is provided in the arc groove. When the steel pipe 9 partially enters the arc groove, the buffer structure 8 is adapted to abut against the outer peripheral wall of the steel pipe 9 to buffer the force acting when the steel pipe 9 moves radially.

[0054] The buffer structure 8 can adopt an air bag 81 or a spring. When the steel pipe 9 moves toward the arc groove, the steel pipe 9 is suitable for connecting with the steel pipe 9, and the buffer structure 8 can be suitable for elastic deformation to buffer the force of the radial movement of the steel pipe 9; by adopting the above technical scheme, when the steel pipe 9 is lifted to the side of the multiple limit assemblies 2 facing the foundation pit a1, the positioning plate 22 can play the purpose of preliminary and rough positioning of the steel pipe 9, thereby improving the positioning efficiency of the steel pipe 9.

[0055] In some embodiments, the buffer structure 8 may be formed as follows: Figure 1 , Figure 2 and Figure 3 The structure shown, see Figure 1 , Figure 2 and Figure 3 The buffer structure 8 includes an airbag 81 and an air pump 82 .

[0056] The airbag 81 is arranged in the arc groove, and is used to abut against the outer wall of the steel pipe 9 to buffer the force of the radial movement of the steel pipe 9; an anti-wear layer is provided on the contact surface of the airbag 81, and the anti-wear layer can prevent the airbag 81 from being worn by the steel pipe 9, thereby increasing the service life of the airbag 81; the airbag 81 is provided with an air inlet and an air outlet, the air inlet is connected to the inflation pump 82, and a valve is provided at the air outlet. After the installation of the steel pipe 9 is completed, the construction personnel can release the gas inside the airbag 81 by opening the valve.

[0057] The air pump 82 is disposed on the bracket 21 and is used to input gas into the airbag 81 ; the air pump 82 can be manually driven or motor driven.

[0058] In some embodiments, the base 1 may be Figure 1 , Figure 2 , Figure 3 and Figure 4 The structure shown, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The base 1 includes two split seats 11.

[0059] The two split seats 11 are spliced ​​to form an annular structure suitable for surrounding the outside of the foundation pit a1; one of the split seats 11 has a plurality of thread grooves, and the other split seat 11 has a plurality of alignment holes corresponding to the plurality of thread grooves, and each alignment hole is inserted with a fixing bolt 12 suitable for threaded connection with the corresponding thread groove.

[0060] The base 1 adopts a split structure, and several limit assemblies 2, multiple swing plates 3 and multiple swing mechanisms 5 are symmetrically distributed on two split seats 11, and the drive motor 62 is set on one of the split seats 11; the two split seats 11 can be detachably connected by fixing bolts 12. After the steel pipe 9 is installed, the construction personnel can split the positioning device into two independent parts by removing the fixing bolts 12, which is convenient for recycling and reuse.

[0061] The technical solution adopted in the present application also provides a steel pipe concrete installation method, based on the steel pipe positioning device of any one of the aforementioned contents, comprising the following steps: A. Install the base 1 outside the excavated foundation pit a1. The base 1 can be fixed on the outside of the foundation pit a1 by anchoring.

[0062] B. Use a crane to lift the steel pipe 9 to the top of the foundation pit a1, and move the steel pipe 9 between several limit assemblies 2 to limit the movement of the steel pipe 9 in the radial direction; the purpose is to perform preliminary positioning of the steel pipe 9 before installation.

[0063] C. Control multiple swing mechanisms 5 through synchronous driving components 6 to drive multiple swing plates 3 to swing simultaneously until the rolling components 4 on each swing plate 3 are connected with the steel pipe 9; the purpose is to position the steel pipe 9 in the radial direction so that the steel pipe 9 can only move up and down along its own axis.

[0064] D. Control the lifting equipment to slowly lower the steel pipe 9, so that the steel pipe 9 moves along the axial direction of the foundation pit a1 toward the inner bottom surface of the foundation pit a1, until the bottom end of the steel pipe 9 is connected with the inner bottom surface of the foundation pit a1; the inner bottom surface of the foundation pit a1 is pre-provided with a steel plate, which is used to connect with the bottom end of the steel pipe 9.

[0065] E. Fix the bottom end of the steel pipe 9; the construction personnel fix the bottom end of the steel pipe 9 to the steel plate by welding.

[0066] F. Pour concrete into the steel pipe 9 and into the gap between the steel pipe 9 and the foundation pit a1 to match the concrete with the steel pipe 9 to form steel pipe concrete.

[0067] G. After the concrete solidifies, the synchronous driving assembly is controlled to drive the plurality of swing plates 3 to separate from the steel pipe 9; and the base 1 and the plurality of limit assemblies 2, the plurality of swing plates 3 and the plurality of swing mechanisms 5 arranged on the base 1 are dismantled for subsequent installation and reuse.

[0068] Compared with the prior art, the steel pipe concrete installation method provided in the embodiment of the present application can accurately position the steel pipe 9 during the installation process of the steel pipe 9, avoid shaking of the steel pipe 9, and improve the installation accuracy; in addition, it also avoids scratches between the steel pipe 9 and the inner wall of the foundation pit a1, ensuring that the installation of the steel pipe 9 is not affected.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe positioning device, characterized in that: include: A base (1) is used for being installed outside the foundation pit (a1); A plurality of limit assemblies (2) are arranged around the foundation pit (a1) and are arranged on the base (1) at intervals along the circumference of the foundation pit (a1); when the steel pipe (9) moves to above the foundation pit (a1), the limit assemblies (2) are suitable for abutting against the outer peripheral wall of the steel pipe (9) to limit the movement of the steel pipe (9) in the radial direction; A plurality of swing plates (3) are arranged around the foundation pit (a1) and are arranged on the base (1) at intervals along the circumference of the foundation pit (a1); one end of each swing plate (3) is hinged to the base (1), and the other end is provided with a rolling member (4), and the rolling member (4) is used to abut against the outer peripheral surface of the steel pipe (9); and A plurality of swing mechanisms (5) are arranged around the foundation pit (a1) and are correspondingly connected to the plurality of swing plates (3) in a transmission manner; the plurality of swing mechanisms (5) are connected via a synchronous driving component (6) so as to be suitable for driving the plurality of swing plates (3) to swing simultaneously.

2. The steel pipe positioning device according to claim 1, characterized in that: The swing mechanism (5) comprises: A worm (51) is rotatably connected to the base (1) along the hinge axis of the swing plate (3); the worm (51) is transmission-connected to the synchronous drive member (6) so that the worm (51) is suitable for rotating around its own axis; A worm wheel (52) is rotatably connected to the base (1) and meshedly connected to the worm (51); the worm wheel (52) has a threaded hole that penetrates along its axial direction; and A screw rod (53) threadedly connected to the threaded hole; Wherein, a connecting structure (7) is provided between the screw rod (53) and the swing plate (3).

3. The steel pipe positioning device according to claim 2, characterized in that: The synchronous driving component (6) comprises: A plurality of universal shafts (61) are respectively arranged between two adjacent worm gears (51) along the circumference of the foundation pit (a1), and both ends of each universal shaft (61) are respectively connected to two adjacent worm gears (51) so as to synchronize the rotation of each worm gear (51); and A driving motor (62) is arranged on the base (1) and is drivingly connected to one of the universal shafts (61) so as to be suitable for driving a plurality of the universal shafts (61) to rotate.

4. The steel pipe positioning device according to claim 2, characterized in that: The connection structure (7) comprises: Two sliding grooves (71) are arranged in parallel on a side of the swing plate (3) facing away from the foundation pit (a1), and the opening direction of each sliding groove (71) is parallel to the hinge axis of the swing plate (3); and The sliding rod (72) is arranged at one end of the screw rod (53) facing the swing plate (3) and is inserted into the two sliding grooves (71).

5. The steel pipe positioning device according to claim 1, characterized in that: The rolling member (4) comprises: A rotating shaft (41) rotatably connected to the swing plate (3); and The roller (42) is sleeved on the rotating shaft (41), and when the synchronous driving component drives the swing plate (3) to swing toward the foundation pit (a1), the roller (42) is suitable for abutting against the outer peripheral wall of the steel pipe (9).

6. The steel pipe positioning device according to claim 5, characterized in that: The roller (42) comprises two conical wheels, and the small-diameter ends of the two conical wheels are butt-jointed.

7. The steel pipe positioning device according to claim 1, characterized in that: The limiting component (2) comprises: A bracket (21) is fixedly arranged on the upper side of the base (1); and A positioning plate (22) is fixedly arranged on the upper end of the bracket (21), and the positioning plate (22) has an arc-shaped groove on a side facing the foundation pit (a1) suitable for partially allowing the steel pipe (9) to enter; A buffer structure (8) is provided in the arc groove. When the steel pipe (9) partially enters the arc groove, the buffer structure (8) is suitable for abutting against the outer peripheral wall of the steel pipe (9) to buffer the force acting when the steel pipe (9) moves radially.

8. The steel pipe positioning device according to claim 7, characterized in that: The buffer structure (8) comprises: an air bag (81) disposed in the arc-shaped groove and used to abut against the outer peripheral wall of the steel pipe (9) to buffer the force acting when the steel pipe (9) moves radially; and An air pump (82) is arranged on the support (21) and is used to input gas into the air bag (81).

9. The steel pipe positioning device according to claim 1, characterized in that: The base (1) comprises: Two split seats (11) are spliced ​​to form an annular structure suitable for surrounding the outside of the foundation pit (a1); one of the split seats (11) has a plurality of thread grooves, and the other split seat (11) has a plurality of alignment holes corresponding to the plurality of thread grooves, and each of the alignment holes is inserted with a fixing bolt (12) suitable for threaded connection with the corresponding thread groove.

10. A method for installing concrete-filled steel pipes, based on the steel pipe positioning device according to any one of claims 1 to 9, characterized in that: The following steps are involved: A. installing the base (1) outside the excavated foundation pit (a1); B. using a lifting device to lift the steel pipe (9) to the top of the foundation pit (a1), and moving the steel pipe (9) between a plurality of the limiting assemblies (2) to limit the movement of the steel pipe (9) in a radial direction; C. controlling the plurality of swing mechanisms (5) through the synchronous driving member (6) to drive the plurality of swing plates (3) to swing simultaneously until the rolling member (4) on each of the swing plates (3) is in contact with the steel pipe (9); D. controlling the lifting equipment to slowly lower the steel pipe (9) so that the steel pipe (9) moves along the axial direction of the foundation pit (a1) toward the inner bottom surface of the foundation pit (a1) until the bottom end of the steel pipe (9) is in contact with the inner bottom surface of the foundation pit (a1); E. fixing the bottom end of the steel pipe (9); F. pouring concrete into the steel pipe (9) and into the gap between the steel pipe (9) and the foundation pit (a1); G. After the concrete solidifies, the synchronous drive assembly is controlled to drive the plurality of swing plates (3) to separate from the steel pipe (9).

Images