A variable diameter steel cage anchor rod for expanded hole fitting

Abstract

This invention discloses a variable diameter steel cage anchor rod for expanded hole fitting, including a structural base plate, a bottom pad plate fixedly connected to the bottom of the structural base plate, and a No. 1 anchor rod inside the structural base plate and the bottom pad plate. The beneficial effects of this invention are: by adding a limiting installation plate, the limiting installation plate is extended and fitted with a fixed groove, the limiting installation plate is fixed to the fixed groove, the installation cylinder is stably installed in the installation groove, the No. 1 anchor rod and the connecting anchor rod are spliced ​​and installed, and the No. 1 anchor rod and the connecting anchor rod are quickly connected, which is convenient during splicing and facilitates the work before transportation and grouting installation. By adding spiral steel bars and vertical steel bars, the vertical steel bars and the spiral steel bars wrapped around the outside are used to stabilize and fix the whole, which improves the overall stability of the skeleton and ensures the overall stability of the anchor rod and the foundation pile.

Description

Technical Field

[0001] This invention relates to the field of steel cage anchor technology, specifically a variable diameter steel cage anchor for expanded hole fitting. Background Technology

[0002] Straight-through or enlarged-head anchor bolt technology is a new type of underground engineering application technology that aligns with the national advocacy of "energy conservation, emission reduction, and green development." Compared to traditional methods, it is more economical and environmentally friendly in addressing basement buoyancy and foundation pit support; it also offers significant advantages in cost, construction period, and durability. With the increasing adoption of enlarged-head anchor bolt technology, more and more projects are using it for basement buoyancy and foundation pit support. Meanwhile, extensive engineering practice has shown that the tensile strength of anchor bolts is much greater than that of ordinary anchor bolts, and the deformation displacement of ordinary anchor bolts is larger. Therefore, the requirements for displacement control are higher than those for traditional pile foundations. Thus, how to better control the deformation of anchor bolts is an important direction for improving the technology of expanded-body anchor bolts. The technology of expanding holes for variable-diameter anchor bolts or pile foundations has a basis in terms of cost construction. Grouting or concrete injection separately forms the large and small ends, but without a corresponding steel reinforcement cage, it cannot form an anchor bolt or pile foundation with sufficient friction for tensile or resistance transmission. Moreover, the splicing between the anchor bolt and the steel reinforcement cage is not convenient. They are all set up as a whole, which is not convenient during transportation and before grouting installation, thus prolonging the installation period of the steel reinforcement cage anchor bolts. Summary of the Invention

[0003] The purpose of this invention is to provide a variable diameter rebar cage anchor rod for expanded hole fitting, so as to solve the problems mentioned in the background art, such as the inconvenience of splicing between the anchor rod and the rebar cage, the fact that they are all integrally set, the inconvenience during transportation and before grouting installation, and the prolongation of the installation period of the rebar cage anchor rod.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a variable diameter rebar cage anchor rod for expanded hole fitting, comprising a structural base plate, a base pad plate fixedly connected to the bottom of the structural base plate, an anchor rod No. 1 disposed inside the structural base plate and the base pad plate, an internally threaded rod rotatably connected inside the anchor rod No. 1, a movable plate rotatably connected to the bottom of the internally threaded rod, the movable plate being slidably connected to the anchor rod No. 1, an installation cylinder fixedly connected to the bottom of the anchor rod No. 1, five restricting installation plates slidably connected at equal intervals inside the installation cylinder, five pressure plates fixedly connected at equal intervals to the bottom of the movable plate, a movable groove opened inside the restricting installation plate, the pressure plate being movably connected to the movable groove, pressure rods fixedly connected to both sides of the pressure plate, and symmetrical openings inside the movable groove. Two adjusting inclined grooves are provided. The pressure rod is slidably connected to the adjusting inclined groove. A connecting anchor rod is installed at the bottom of the mounting cylinder. The top of the connecting anchor rod has an installation groove that mates with the mounting cylinder. The inner side of the installation groove has a fixing groove that mates with the limiting mounting plate. The pressure plate is slidably connected to the first anchor rod. A connecting top box is slidably connected to the outer side of the connecting anchor rod. A limiting slide plate is fixedly connected to the outer side of the connecting anchor rod. The limiting slide plate is slidably connected to the connecting top box. A second fixed outer frame is slidably connected to the outer side of the connecting anchor rod. The second fixed outer frame is fixedly connected to the connecting top box. Two first fixed outer frames are slidably connected to the outer side of the connecting anchor rod. An auxiliary base plate is provided on the outer side of the connecting anchor rod. Eight vertical steel bars are fixedly connected at equal intervals to the top of the auxiliary base plate.

[0005] As a preferred embodiment of the present invention: a second anchoring grout is provided on the outside of the connecting anchor rod, a first anchoring grout is provided on the outside of the first anchor rod, the top of the first anchoring grout is fixedly connected to the bottom pad plate, and the first anchoring grout is fixedly connected to the second anchoring grout.

[0006] As a preferred embodiment of the present invention, spiral reinforcing bars are wound around the outer sides of the eight vertical reinforcing bars.

[0007] As a preferred embodiment of the present invention: centering brackets are fixedly connected at equal intervals to the outer side of the No. 1 anchor rod.

[0008] As a preferred embodiment of the present invention: a rotating screw block is fixedly connected to the top of the internal thread rod, and an internal thread groove is opened on the top of the first anchor rod.

[0009] As a preferred embodiment of the present invention: the top of the first anchor rod is provided with a tightening cap that cooperates with the rotating screw block, the outer side of the tightening cap is fixedly connected with an external threaded sleeve that cooperates with the internal thread groove, and the top of the tightening cap is symmetrically fixedly connected with auxiliary screw blocks.

[0010] As a preferred embodiment of the present invention, a guide head is fixedly connected to the bottom end of the connecting anchor rod.

[0011] As a preferred embodiment of the present invention: the structural base plate, the base pad plate, the No. 1 anchoring grout and the No. 2 anchoring grout are provided with grouting pipes inside.

[0012] As a preferred embodiment of the present invention: eight connecting rods are fixedly connected at equal intervals on the outer sides of both the first and second fixed outer frames, and one end of each connecting rod is fixedly connected to a vertical reinforcing bar.

[0013] As a preferred embodiment of the present invention: a spring is sleeved on the outer side of the connecting anchor rod, one end of the spring is fixedly connected to the limiting slide plate, and the other end of the spring is fixedly connected to the connecting top box.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By adding a limiting installation plate, the present invention enables the limiting installation plate to extend and cooperate with the fixed groove, thereby fixing the limiting installation plate and the fixed groove, stably installing the installation cylinder in the installation groove, splicing and installing the first anchor rod and the connecting anchor rod, and quickly connecting the first anchor rod and the connecting anchor rod. This facilitates splicing and makes the work easier during transportation and before grouting installation. By adding spiral steel bars and vertical steel bars, stable fixation is achieved through the vertical steel bars and the spiral steel bars wrapped around the outside, fixing the whole and improving the overall stability of the skeleton, thus ensuring the overall stability of the anchor rod and the foundation pile. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 For the present invention Figure 1 Enlarged view at point B in the middle;

[0018] Figure 4 This is a top view of the connecting rod of the present invention;

[0019] Figure 5 This is a top view of the mounting plate, which is a limitation of the present invention.

[0020] Figure 6 This is a side view of the mounting plate for the present invention.

[0021] In the diagram: 1. Anchor rod No. 1; 2. Internal threaded rod; 3. Centering bracket; 4. Moving plate; 5. Pressure plate; 6. Pressure rod; 7. Restricting installation plate; 8. Adjusting groove; 9. Installation cylinder; 10. Fixing groove; 11. Installation groove; 12. Connecting anchor rod; 13. Limiting slide plate; 14. Spring; 15. Connecting top box; 16. Fixed outer frame No. 1; 17. Connecting rod; 18. Fixed outer frame No. 2; 19. Guide head; 20. Grouting pipe; 21. Rotating screw block; 22. Internal threaded groove; 23. Tightening cap; 24. External threaded sleeve; 25. Auxiliary screw block; 26. Structural base plate; 27. Anchor grout No. 1; 28. Anchor grout No. 2; 29. ​​Vertical reinforcement; 30. Spiral reinforcement; 31. Bottom pad plate; 32. Auxiliary base plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 6This invention provides a technical solution: a variable diameter rebar cage anchor rod for expanded hole fitting, comprising a structural base plate 26, a base pad 31 fixedly connected to the bottom of the structural base plate 26, an anchor rod 1 inside the structural base plate 26 and the base pad 31, an internally threaded rod 2 rotatably connected inside the anchor rod 1, a movable plate 4 rotatably connected to the bottom of the internally threaded rod 2, the movable plate 4 being slidably connected to the anchor rod 1, an installation cylinder 9 fixedly connected to the bottom of the anchor rod 1, five restricting installation plates 7 slidably connected at equal intervals inside the installation cylinder 9, five pressure plates 5 equidistantly fixedly connected to the bottom of the movable plate 4, a movable groove opened inside the restricting installation plate 7, the pressure plates 5 being movably connected to the movable groove, pressure rods 6 fixedly connected to both sides of the pressure plates 5, two adjusting inclined grooves 8 symmetrically opened inside the movable groove, the pressure rods 6 being slidably connected to the adjusting inclined grooves 8, a connecting anchor rod 12 installed at the bottom of the installation cylinder 9, an installation groove 11 mates with the installation cylinder 9 opened at the top of the connecting anchor rod 12, and an installation groove 11 mates with the restricting anchor rod 12 opened on the inner side of the installation groove 11. The mounting plate 7 is fitted with a fixing groove 10. The pressure plate 5 is slidably connected to the first anchor rod 1. The outer side of the connecting anchor rod 12 is slidably connected to a connecting top box 15. The outer side of the connecting anchor rod 12 is fixedly connected to a limiting slide plate 13. The limiting slide plate 13 is slidably connected to the connecting top box 15. The outer side of the connecting anchor rod 12 is slidably connected to a second fixing frame 18. The second fixing frame 18 is fixedly connected to the connecting top box 15. The outer side of the connecting anchor rod 12 is slidably connected to two first fixing frames 16. An auxiliary base plate 32 is provided, and eight vertical steel bars 29 are fixedly connected at equal intervals on the top of the auxiliary base plate 32. When it moves downward, the moving plate 4 and the pressure plate 5 move downward. The pressure plate 5 drives the pressure rod 6 to move downward. The pressure rod 6 presses the adjusting groove 8 in the limiting installation plate 7. By pressing the adjusting groove 8, the limiting installation plate 7 is moved. The limiting installation plate 7 extends into the fixing groove 10 for limiting and fixing. The positions of the first anchor rod 1 and the connecting anchor rod 12 are spliced ​​and fixed, which improves the stability and efficiency of splicing.

[0024] Among them, the outside of the connecting anchor rod 12 is provided with a second anchoring grout 28, and the outside of the first anchor rod 1 is provided with a first anchoring grout 27. The top of the first anchoring grout 27 is fixedly connected to the bottom pad plate 31, and the first anchoring grout 27 is fixedly connected to the second anchoring grout 28 to stabilize the position of the overall skeleton.

[0025] Among them, the outer sides of the eight vertical steel bars 29 are surrounded by spiral steel bars 30. The vertical steel bars 29 and spiral steel bars 30 stabilize the main structure and stabilize the overall skeleton structure.

[0026] Among them, the outer side of the No. 1 anchor rod 1 is fixedly connected with a centering bracket 3 at equal intervals, and the fixed position of the No. 1 anchor rod 1 is stabilized by the centering bracket 3.

[0027] The top of the internal thread rod 2 is fixedly connected to a rotating screw block 21, and the top of the first anchor rod 1 is provided with an internal thread groove 22. The internal thread rod 2 is rotated and adjusted by rotating the screw block 21.

[0028] Among them, the top of the No. 1 anchor rod 1 is provided with a tightening cap 23 that cooperates with the rotating screw block 21. The outer side of the tightening cap 23 is fixedly connected with an external thread sleeve 24 that cooperates with the internal thread groove 22. The top of the tightening cap 23 is symmetrically fixedly connected with auxiliary screw blocks 25. The external thread sleeve 24 on the outer side of the tightening cap 23 is threadedly installed and fixed to the inner side of the internal thread groove 22. The tightening cap 23 is used to tighten the rotating screw block 21 to ensure the stability of the connection between the No. 1 anchor rod 1 and the connecting anchor rod 12.

[0029] The bottom end of the connecting anchor rod 12 is fixedly connected to a guide head 19, which guides the movement of the connecting anchor rod 12.

[0030] The structural base plate 26, the base pad plate 31, the No. 1 anchoring grout 27 and the No. 2 anchoring grout 28 are equipped with grouting pipes 20. Grouting is carried out through the grouting pipes 20. The main structure is stabilized by vertical steel bars 29 and spiral steel bars 30 to ensure stability.

[0031] Among them, eight connecting rods 17 are fixedly connected at equal intervals on the outer sides of the first fixed outer frame 16 and the second fixed outer frame 18. One end of the connecting rod 17 is fixedly connected to the vertical steel bar 29. The first fixed outer frame 16 and the second fixed outer frame 18 are connected and fixed through the connecting rods 17 to provide stable support.

[0032] A spring 14 is fitted on the outer side of the connecting anchor rod 12. One end of the spring 14 is fixedly connected to the limiting slide plate 13, and the other end of the spring 14 is fixedly connected to the connecting top box 15. The spring 14 resets the moving position of the limiting slide plate 13, thereby improving stability.

[0033] Specifically, during use, when splicing the No. 1 anchor rod 1 and the connecting anchor rod 12, the installation cylinder 9 is inserted into the installation groove 11, and the internal thread rod 2 is rotated by rotating the screw block 21. When the internal thread rod 2 rotates, it moves downward, which moves the moving plate 4 and the pressure plate 5 downward. The pressure plate 5 drives the pressure rod 6 to move downward, and the pressure rod 6 presses the adjusting groove 8 in the limiting installation plate 7. By pressing the adjusting groove 8, the limiting installation plate 7 is moved, and the limiting installation plate 7 extends into the fixing groove 10 for limiting and fixing. The positions of the No. 1 anchor rod 1 and the connecting anchor rod 12 are spliced ​​and fixed. Then, the external threaded sleeve 24 on the outside of the tightening cap 23 is threaded and fixed to the inside of the internal threaded groove 22. The tightening cap 23 is used to tighten the rotating screw block 21 to ensure the stability of the connection between the No. 1 anchor rod 1 and the connecting anchor rod 12. Grouting is performed through the grouting pipe 20, and the main structure is stabilized by the vertical steel bars 29 and the spiral steel bars 30 to ensure stability.

[0034] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable diameter steel cage anchor rod for expanded hole fitting, comprising a structural base plate (26), characterized in that, A base plate (31) is fixedly connected to the bottom of the structural base plate (26). An anchor rod (1) is provided inside the structural base plate (26) and the base plate (31). An internal thread rod (2) is rotatably connected inside the anchor rod (1). A movable plate (4) is rotatably connected to the bottom of the internal thread rod (2). The movable plate (4) is slidably connected to the anchor rod (1). An installation cylinder (9) is fixedly connected to the bottom of the anchor rod (1). Five restricting installation plates (7) are equidistantly slidably connected inside the installation cylinder (9). Five pressure plates (5) are equidistantly fixedly connected to the bottom of the movable plate (4). An movable groove is opened inside the restricting installation plate (7). The pressure plates (5) are connected to the movable groove. The movable connection is such that pressure rods (6) are fixedly connected to both sides of the pressure plate (5). Two adjusting grooves (8) are symmetrically opened inside the movable groove. The pressure rods (6) are slidably connected to the adjusting grooves (8). A connecting anchor rod (12) is installed at the bottom of the mounting cylinder (9). An mounting groove (11) that cooperates with the mounting cylinder (9) is opened at the top of the connecting anchor rod (12). A fixing groove (10) that cooperates with the limiting mounting plate (7) is opened on the inner side of the mounting groove (11). The pressure plate (5) is slidably connected to the first anchor rod (1). A connecting top box (15) is slidably connected to the outer side of the connecting anchor rod (12). A limiting slide plate (13) is fixedly connected to the outer side of the connecting anchor rod (12). The limiting slide plate (13) is slidably connected to the connecting top box (15). A second fixed outer frame (18) is slidably connected to the outside of the connecting anchor rod (12). The second fixed outer frame (18) is fixedly connected to the connecting top box (15). Two first fixed outer frames (16) are slidably connected to the outside of the connecting anchor rod (12). An auxiliary base plate (32) is provided on the outside of the connecting anchor rod (12). Eight vertical steel bars (29) are fixedly connected at equal intervals on the top of the auxiliary base plate (32). A second anchoring grout (28) is provided on the outside of the connecting anchor rod (12). A first anchoring grout (27) is provided on the outside of the first anchor rod (1). The top of the first anchoring grout (27) is connected to the bottom pad plate (31). The first anchoring grout (27) and the second anchoring grout (28) are fixedly connected; the eight vertical steel bars (29) are surrounded by spiral steel bars (30); the first anchor rod (1) is fixedly connected to a centering bracket (3) at equal intervals; the top of the internal thread rod (2) is fixedly connected to a rotating screw block (21), and the top of the first anchor rod (1) is provided with an internal thread groove (22); the top of the first anchor rod (1) is provided with a tightening cap (23) that cooperates with the rotating screw block (21), the outside of the tightening cap (23) is fixedly connected to an external thread sleeve (24) that cooperates with the internal thread groove (22), and the top of the tightening cap (23) is symmetrically fixedly connected to an auxiliary screw block (25).

2. The variable diameter steel cage anchor bolt for expanded hole fitting according to claim 1, characterized in that: The bottom end of the connecting anchor rod (12) is fixedly connected to a guide head (19).

3. The variable diameter steel cage anchor rod for expanded hole fitting according to claim 2, characterized in that: Grouting pipes (20) are provided inside the structural base plate (26), base pad plate (31), No. 1 anchoring grout (27) and No. 2 anchoring grout (28).

4. The variable diameter steel cage anchor rod for expanded hole fitting according to claim 3, characterized in that: The outer sides of the first fixed outer frame (16) and the second fixed outer frame (18) are each fixedly connected with eight connecting rods (17) at equal intervals, and one end of the connecting rod (17) is fixedly connected to the vertical steel bar (29).

5. The variable diameter steel cage anchor rod for expanded hole fitting according to claim 4, characterized in that: A spring (14) is fitted on the outside of the connecting anchor rod (12). One end of the spring (14) is fixedly connected to the limiting slide plate (13), and the other end of the spring (14) is fixedly connected to the connecting top box (15).

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