A pre-embedded positioner for a pre-set hole of a building structure

Abstract

The utility model relates to building engineering pre -buried positioning technical field, concretely is a kind of building structure preset hole's pre -buried positioner, including locating cylinder, the outside of locating cylinder is provided with four stabilizing blocks, the outside of two stabilizing blocks is provided with fixed plate, the outside of fixed plate is provided with through -hole, the top of fixed plate is provided with connecting column, the inside of locating cylinder is slidably connected with pre -buried pipe, the inside of pre -buried pipe is abutted with three arc clamping plates, the outside of two connecting columns is provided with connecting block, the horizontal side of two connecting blocks is provided with arc clamping plate a, this building structure preset hole's pre -buried positioner, through stabilizing block, mounting plate, arc clamping plate and three-jaw chuck multiple structure cooperative positioning, ensure that pre -buried pipe and preset hole axis coincide, resist pouring vibration external force, solve traditional positioning deviation problem, it is convenient to disassemble and assemble, adapt different specifications pre -buried pipe, improve construction accuracy and stability, simplify process, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of pre-embedded positioning technology in building engineering, specifically a pre-embedded positioning device for pre-set holes in building structures. Background Technology

[0002] An embedded locator is an auxiliary positioning device that is pre-embedded in a building or mechanical structure to accurately position and install components and calibrate their positions. Pre-embedded locators for pre-drilled holes in building structures can accurately fix the hole coordinates, control the hole diameter and verticality, avoid hole offset and deformation during pouring and construction, ensure the accuracy and efficiency of subsequent pipeline installation and component installation, and reduce rework costs.

[0003] A search revealed Chinese Patent Publication No. CN221703143U, which discloses a pre-embedded locator for pre-drilled holes in building structures. The locator includes a positioning cylinder with limit blocks fixedly installed on both sides. A connecting plate is provided at the bottom of each limit block, and a telescopic component is fixedly installed on the surface of the connecting plate. A protective ring is welded to the top of the positioning cylinder, and threaded grooves are formed on both sides of the protective ring. Clamping components are threaded through the internal threads of these grooves. This pre-embedded locator for pre-drilled holes in building structures, through the arrangement of the positioning cylinder, limit blocks, connecting plate, and telescopic component, allows for the welding of the limit blocks and connecting plate to the positioning cylinder during use. The lifting rod is then pulled out from the inside of the sleeve rod via a guide rod. After being pulled to the appropriate position, a limiting bolt is used to fix the sleeve rod and the lifting rod, thereby achieving the purpose of fixing pre-embedded pipes of different heights and improving the stability of the locator.

[0004] The aforementioned patent proposes the use of a protective ring and clamping components. When in use, the embedded pipe is inserted into the positioning cylinder, and then the threaded rod rotates through the protective ring. The bearing moves forward with the rotation of the threaded rod, and the embedded pipe is fixed by an arc plate. However, this single clamping structure, which relies solely on the threaded rod to drive the arc plate, cannot effectively counteract the disturbance of external forces on the positioning system under complex working conditions such as the impact of concrete pouring and vibration. This leads to radial movement of the embedded pipe and horizontal displacement of the positioning cylinder, making it difficult to ensure the precise alignment of the embedded pipe with the preset hole axis. The positioning stability is consistently insufficient, and the axis accuracy deviation is large.

[0005] To address this, we propose a pre-embedded positioning device for pre-embedded holes in building structures that can achieve synergistic effects of multiple positioning structures to ensure complete alignment between the pre-embedded pipe and the pre-set hole axis, effectively resisting external forces from concrete pouring and vibration. Utility Model Content

[0006] One of the technical problems this application aims to solve is that its single clamping structure, which relies solely on the threaded rod to drive the arc plate, cannot effectively counteract the disturbance of external forces on the positioning system under complex working conditions such as concrete pouring impact and vibration. This leads to the pre-embedded pipe being prone to radial movement and the positioning cylinder experiencing horizontal displacement.

[0007] To solve the above-mentioned technical problems, this application provides a pre-embedded locator for a pre-set hole in a building structure, including a positioning cylinder. Four stabilizing blocks are provided on the outside of the positioning cylinder, and two of the stabilizing blocks are provided with fixing plates on the outside. A through hole is opened on the outside of the fixing plate, and a connecting column is provided on the top of the fixing plate. An embedded pipe is slidably connected to the inside of the positioning cylinder, and three arc-shaped clamping plates abut against the inside of the embedded pipe.

[0008] In some embodiments, a connecting block is provided on the outside of both connecting columns, and an arc-shaped clamping plate a is provided on the horizontally similar side of the two connecting blocks. A rubber pad is provided on the inner side of the arc-shaped clamping plate a, and the outside of the rubber pad is in contact with the outside of the pre-embedded pipe.

[0009] In some embodiments, threaded posts are provided at both the left and right ends of the front side of the arc-shaped clamping plate a, and an arc-shaped clamping plate b is slidably connected to the outside of the two threaded posts. The inner side of the arc-shaped clamping plate b is in contact with the outside of the pre-embedded pipe, and a wing nut is threadedly connected to the outside of the threaded posts. The outside of the wing nut is in contact with the left and right ends of the front side of the arc-shaped clamping plate b.

[0010] In some embodiments, a mounting plate is provided on the top of the two connecting columns, the outer top end of the pre-embedded pipe is disposed in a positioning hole opened on the outside of the mounting plate, and two limiting blocks are provided on the top of the mounting plate.

[0011] In some embodiments, the top of the mounting plate is provided with two placement slots, and a connecting cone is slidably connected to the inner side of the placement slot, with the outer side of the connecting cone in contact with the inner side of the limiting block.

[0012] In some embodiments, the limiting block is internally slidably connected to a fixing bolt, the fixing bolt is externally threaded to the outside of the connecting cone, and a top plate is provided on the top of the two connecting cones.

[0013] In some embodiments, an electric push rod is provided at the bottom of the top plate, a three-jaw chuck is provided at the drive end of the electric push rod, a three-jaw chuck is provided inside the pre-embedded pipe, and the outside of the three-jaw chuck is provided on the inner side of the three arc-shaped chucks.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. The horizontal positioning and precise installation of the entire positioning device are achieved through the stabilizing block at the bottom of the positioning cylinder. Combined with the radial positioning of the mounting plate, the lateral clamping of the arc-shaped clamping plate, and the axial centering fixation of the three-jaw chuck, the multiple positioning structures work together to ensure that the axis of the embedded pipe is completely aligned with the axis of the preset hole. This design effectively resists the external force of concrete pouring and vibration, avoids horizontal displacement of the positioning cylinder and radial swaying of the embedded pipe, significantly improves the positioning stability of the embedded pipe, ensures the accuracy of the axis of the preset hole, solves the technical problem of easy deviation in traditional positioning, greatly improves the accuracy of embedded construction, and lays a solid foundation for subsequent related processes.

[0016] 2. The installation and disassembly are convenient and the stability is strong. The locator is quickly fixed with bolts and the expansion of the claws pushes the arc-shaped clamping plate to press the pipe wall, so as to achieve axial centering of the pre-embedded pipe. During the pouring, it can resist the external force of vibration and maintain the stability of the pre-embedded pipe position. After construction, the three-jaw chuck and the lateral clamping structure can be released in sequence, and then the main body of the locator can be disassembled. No complicated operation is required. It not only ensures the stability of the pre-embedded pipe during the concrete pouring process, but also simplifies the disassembly and assembly process. The locator can be reused, reducing construction costs and adapting to the construction needs of pre-embedded pipes of different specifications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the mounting plate structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged diagram of A in the middle;

[0020] Figure 4 This is a schematic diagram of the arc-shaped clamping plate b structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the arc-shaped card plate structure of this utility model.

[0022] In the diagram: 1. Positioning cylinder; 2. Stabilizing block; 3. Fixing plate; 4. Through hole; 5. Embedded pipe; 6. Connecting column; 7. Connecting block; 8. Arc-shaped clamp a; 9. Rubber pad; 10. Threaded column; 11. Wing nut; 12. Arc-shaped clamp b; 13. Mounting plate; 14. Limiting block; 15. Placement slot; 16. Fixing bolt; 17. Connecting cone; 18. Top plate; 19. Electric push rod; 20. Three-jaw chuck; 21. Arc-shaped clamping plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figures 1-3 This utility model provides a technical solution: a pre-embedded locator for a pre-set hole in a building structure, including a positioning cylinder 1. The positioning cylinder 1 is a cylindrical hollow structure with open ends, used to provide an installation guide channel for the pre-embedded pipe 5 and define the basic outline of the pre-set hole. Four stabilizing blocks 2 are provided on its exterior. The four stabilizing blocks 2 are evenly distributed in a ring on the lower part of the outer wall of the positioning cylinder 1 and are welded and fixed to the outer wall of the positioning cylinder 1, which plays the role of dispersing the force and enhancing the support stability of the positioning cylinder 1. Fixing plates 3 are provided on the exterior of two stabilizing blocks 2. The fixing plates 3 are rectangular steel plate structures, integrally formed with the stabilizing blocks 2 or bolted together, used to realize the fixed connection between the locator and the construction base. The fixing plates 3 have through holes 4 on their exterior, the diameter of which is adapted to the outer diameter of commonly used construction bolts or pins, so that the connecting parts can pass through to achieve fixation.

[0025] A connecting column 6 is provided on the top of the fixing plate 3. The connecting column 6 is a cylindrical solid structure and is vertically welded to the center of the top of the fixing plate 3. It is used to support and fix the mounting plate 13. A pre-embedded pipe 5 is slidably connected to the inner side of the positioning cylinder 1. The pre-embedded pipe 5 can slide axially along the inner wall of the positioning cylinder 1. Its outer diameter is clearance-fitted with the inner diameter of the positioning cylinder 1 to ensure smooth sliding and prevent shaking. Three arc-shaped clamping plates 21 are abutted on the inner side of the pre-embedded pipe 5. The three arc-shaped clamping plates 21 are symmetrically distributed in a ring. The inner side is an arc-shaped surface adapted to the three-jaw chuck 20, and the outer side is an arc-shaped structure that fits against the inner wall of the pre-embedded pipe 5. It is used to transmit the clamping force of the three-jaw chuck 20.

[0026] Both connecting columns 6 are equipped with connecting blocks 7 on their exteriors. The connecting blocks 7 are block-shaped structures, fixed to the middle of the connecting columns 6 by welding or bolts, and are used to connect and support the arc-shaped clamping plates a8. Arc-shaped clamping plates a8 are located on the horizontally similar sides of the two connecting blocks 7. The curvature of the arc-shaped clamping plates a8 matches the curvature of the outer wall of the embedded pipe 5. They are made of elastic steel and have a certain deformation capacity to fit embedded pipes 5 with different outer diameters. Rubber pads 9 are provided on the inner side of the arc-shaped clamping plates a8. The rubber pads 9 are fixed to the inner side of the arc-shaped clamping plates a8 by adhesive bonding and have anti-slip textures on their surface to increase slip resistance. To reduce friction with the outer wall of the pre-embedded pipe 5 and avoid scratching the pipe wall, the outer surface of the rubber pad 9 contacts the outer surface of the pre-embedded pipe 5. The contact surface is a complete arc-shaped contact surface, ensuring uniform force during clamping. Threaded posts 10 are provided on both the left and right ends of the front side of the arc-shaped clamping plate a8. The external surface has standard threads for locking with the wing nut 11. Arc-shaped clamping plates b12 are slidably connected to the two threaded posts 10. The arc of the arc-shaped clamping plate b12 is consistent with that of the arc-shaped clamping plate a8. Sliding holes adapted to the threaded posts 10 are opened at both ends, allowing the position to be adjusted by sliding along the axial direction of the threaded posts 10.

[0027] The inner side of the arc-shaped clamping plate b12 contacts the outer side of the embedded pipe 5, forming an annular clamping space with the arc-shaped clamping plate a8. The threaded column 10 is connected to a wing nut 11 by its external thread. The wing nut 11 is a hand-tightening structure that can be operated without tools, making it convenient and quick to lock and disassemble. The outer side of the wing nut 11 contacts the left and right ends of the front side of the arc-shaped clamping plate b12. By tightening, axial pressure is generated, pushing the arc-shaped clamping plate b12 toward the arc-shaped clamping plate a8 to achieve clamping. The top of the two connecting columns 6 is provided with a mounting plate 13. The mounting plate 13 is a rectangular flat plate structure that is horizontally welded to the top of the two connecting columns 6. It is used to install the limiting block 14 and provide positioning support for the top of the embedded pipe 5. The outer top of the embedded pipe 5 is set in the positioning hole opened on the outside of the mounting plate 13. The diameter of the positioning hole is slightly larger than the outer diameter of the embedded pipe 5, which plays a radial limiting role and ensures the coaxiality of the top of the embedded pipe 5.

[0028] Example 2: Please refer to Figure 4 and Figure 5The top of the mounting plate 13 is provided with two limiting blocks 14, which are symmetrically distributed on both sides of the positioning hole. These blocks provide sliding guidance and limiting for the connecting cone 17, preventing it from shifting. The top of the mounting plate 13 is provided with two placement grooves 15, each a frustoconical groove structure that slides into the bottom of the connecting cone 17, limiting its sliding trajectory. The connecting cone 17 is slidably connected to the inner side of the placement groove 15; its frustoconical design allows for automatic and precise alignment. The outer side of the platform 17 contacts the inner side of the limiting block 14. The inner side of the limiting block 14 is provided with a guide slide rail to ensure that the connecting cone 17 slides smoothly along a straight line. The inner side of the limiting block 14 is slidably connected with a fixing bolt 16. The fixing bolt 16 passes horizontally through the limiting block 14 and can slide along the bolt hole inside the limiting block 14 to lock the position of the connecting cone 17. The outer thread of the fixing bolt 16 is connected to the outer side of the connecting cone 17. The locking force is generated through the thread engagement to fix the sliding position of the connecting cone 17.

[0029] A top plate 18 is provided on the top of the two connecting cones 17. The top plate 18 is a rectangular flat plate structure, placed horizontally on top of the two connecting cones 17, with its bottom surface fitting against the inclined surface of the top of the connecting cones 17. It is used to install and fix the electric push rod 19. The electric push rod 19 is provided at the bottom of the top plate 18. The electric push rod 19 is vertically fixed to the center position of the bottom of the top plate 18 by bolts. It has precise extension and retraction stroke control and is used to drive the three-jaw chuck 20 to move up and down. The drive end of the electric push rod 19 is provided with a three-jaw chuck. The chuck 20, a three-jaw chuck 20, is electrically controlled. The three jaws can expand or contract radially synchronously, providing uniform clamping force output. The three-jaw chuck 20 is installed inside the pre-embedded pipe 5. The outer diameter of the three-jaw chuck 20 is smaller than the inner diameter of the pre-embedded pipe 5, allowing it to freely extend into or withdraw from the pre-embedded pipe 5. The outer side of the three-jaw chuck 20 is located inside the three arc-shaped clamping plates 21. When the chuck expands, it closely abuts against the inner side of the arc-shaped clamping plates 21, transmitting the expansion force to the arc-shaped clamping plates 21 to clamp the inner wall of the pre-embedded pipe 5.

[0030] Based on the above embodiments, the following is the complete working principle of the above embodiments: First, the positioning cylinder 1 is placed at the preset position of the preset hole in the building structure. Four stabilizing blocks 2 fixed to the outside of the positioning cylinder 1 form bottom support and horizontal limit for the positioning cylinder 1, ensuring that the axis of the positioning cylinder 1 coincides with the axis of the preset hole. Through the fixing plate 3 and through hole 4 outside the stabilizing block 2, bolts or pins are used to fix the fixing plate 3 to the building construction base layer, completing the overall installation and positioning of the locator and preventing horizontal displacement of the positioning cylinder 1 during construction. The embedded pipe 5 is then slidably inserted along the inner side of the positioning cylinder 1, so that the bottom of the embedded pipe 5 abuts against the bottom of the inner side of the positioning cylinder 1. Simultaneously, the embedded pipe 5... The top end passes through the positioning hole of the mounting plate 13. The mounting plate 13 is used to radially limit the top end of the pre-embedded pipe 5 to achieve the initial coaxial positioning of the pre-embedded pipe 5. Then, the contact state between the arc-shaped clamping plate a8 and the outer wall of the pre-embedded pipe 5 is adjusted by the connecting block 7 outside the connecting column 6. The arc-shaped clamping plate b12 is slid along the threaded column 10 until it is in contact with the outer wall of the pre-embedded pipe 5. The wing nut 11 outside the threaded column 10 is tightened so that the wing nut 11 presses the arc-shaped clamping plate b12. Then, through the synergistic clamping action of the arc-shaped clamping plate a8 and the arc-shaped clamping plate b12, and with the rubber pad 9 on the inner side of the arc-shaped clamping plate a8 increasing the frictional resistance, the lateral stable fixation of the pre-embedded pipe 5 is achieved, preventing the pre-embedded pipe 5 from shaking radially.

[0031] The drive connecting cone 17 slides along the placement groove 15 on the top of the mounting plate 13, and the connecting cone 17 maintains vertical movement under the guidance of the inner side of the limiting block 14 until the top plate 18 of the two connecting cones 17 and the top of the two limiting blocks 14 contact each other. At this time, the fixing bolt 16 that is slidably connected inside the limiting block 14 is rotated so that the fixing bolt 16 is threadedly engaged with the connecting cone 17. The electric push rod 19 fixed to the bottom of the top plate 18 is activated, and the drive end of the electric push rod 19 is driven to extend downward, driving the three-jaw chuck 20 to extend into the pre-embedded pipe 5. The three jaws of the three-jaw chuck 20 are controlled to expand radially synchronously, so that the outer wall of the three-jaw chuck 20 abuts against the inner side of the three arc-shaped clamping plates 21 inside the pre-embedded pipe 5. The expansion force of the three-jaw chuck 20 pushes the arc-shaped clamping plates 21. 1. Move outward and press the inner wall of the pre-embedded pipe 5 to achieve axial centering and fixation of the pre-embedded pipe 5, ensuring that the axis of the pre-embedded pipe 5 is completely coincident with the axis of the positioning cylinder 1, ensuring the pre-embedded accuracy of the preset hole. After the positioning and fixing of the pre-embedded pipe 5 is completed, concrete pouring construction is carried out. The positioning cylinder 1, the stabilizing block 2 and each clamping component jointly resist the external force generated by the pouring vibration and maintain the stability of the position of the pre-embedded pipe 5. After the concrete solidifies to the preset strength, first control the jaws of the three-jaw chuck 20 to retract, and drive the three-jaw chuck 20 to be pulled out from the inside of the pre-embedded pipe 5 through the electric push rod 19. Then loosen the wing nut 11, remove the arc-shaped clamping plate b12, release the lateral clamping of the pre-embedded pipe 5, and finally disassemble the fixed connection between the fixing plate 3 and the construction base, take out the main body of the locator, and complete the pre-embedded construction.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A pre-embedded locator for pre-drilled holes in a building structure, comprising a locating cylinder (1), characterized in that: The positioning cylinder (1) is provided with four stabilizing blocks (2) on its outside. Each of the two stabilizing blocks (2) is provided with a fixing plate (3). The fixing plate (3) is provided with a through hole (4) on its outside. The fixing plate (3) is provided with a connecting column (6) on its top. The positioning cylinder (1) is slidably connected with a pre-embedded pipe (5). The pre-embedded pipe (5) is abutted against three arc-shaped clamping plates (21) on its inside.

2. The pre-embedded locator for pre-set holes in building structures according to claim 1, characterized in that: Both of the connecting columns (6) are provided with connecting blocks (7) on their exteriors. An arc-shaped clamping plate a (8) is provided on the horizontally similar side of the two connecting blocks (7). A rubber pad (9) is provided on the inner side of the arc-shaped clamping plate a (8). The exterior of the rubber pad (9) is in contact with the exterior of the pre-embedded pipe (5).

3. The pre-embedded locator for pre-set holes in building structures according to claim 2, characterized in that: The front left and right ends of the arc-shaped clamp a (8) are provided with threaded posts (10), and the two threaded posts (10) are slidably connected to the outside of the arc-shaped clamp b (12). The inner side of the arc-shaped clamp b (12) is in contact with the outside of the pre-embedded pipe (5). The threaded post (10) is threadedly connected to the outside of the wing nut (11), and the outside of the wing nut (11) is in contact with the front left and right ends of the arc-shaped clamp b (12).

4. The pre-embedded locator for pre-drilled holes in building structures according to claim 1, characterized in that: The top of the two connecting columns (6) is provided with a mounting plate (13), the outer top end of the pre-embedded pipe (5) is provided in a positioning hole opened on the outside of the mounting plate (13), and the top of the mounting plate (13) is provided with two limiting blocks (14).

5. The pre-embedded locator for pre-set holes in building structures according to claim 4, characterized in that: The top of the mounting plate (13) is provided with two placement slots (15), and a connecting cone (17) is slidably connected to the inner side of the placement slot (15). The outer side of the connecting cone (17) is in contact with the inner side of the limiting block (14).

6. The pre-embedded locator for pre-set holes in building structures according to claim 5, characterized in that: The limiting block (14) is internally slidably connected to a fixing bolt (16), and the external thread of the fixing bolt (16) is connected to the outside of the connecting cone (17). The top of the two connecting cones (17) is provided with a top plate (18).

7. The pre-embedded locator for pre-set holes in building structures according to claim 6, characterized in that: An electric push rod (19) is provided at the bottom of the top plate (18), and a three-jaw chuck (20) is provided at the drive end of the electric push rod (19). A three-jaw chuck (20) is provided inside the pre-embedded pipe (5), and the three-jaw chuck (20) is provided on the outside of the three arc-shaped chucks (21).

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