Fabricated ground anchor bolt

Abstract

The utility model discloses an assembly type ground anchor bolt and relates to the technical field of ground anchor bolts, the assembly type ground anchor bolt comprises a bottom supporting plate, a bearing plate, a top cover plate and an anchor rod, an assembly bolt is fixed on the upper side of the middle of the bottom supporting plate, the assembly bolt sequentially penetrates through the bearing plate and the top cover plate, and after a second nut is tightened, the anchor rod is fixed on the bearing plate. The bottom supporting plate and the pressure bearing plate can play a role in connecting the two anchor rods in the inclined drilled holes, the bottom supporting plate, the pressure bearing plate and the anchor rods can jointly form an anti-pulling structure with the wide upper portion and the narrow lower portion, stress can be effectively dispersed and transmitted, the friction force and the meshing force between the anchor rods and the concrete ground are maximized, and therefore the anti-pulling capacity is remarkably improved, reliable supporting is provided for an upper-layer building, and the construction period is shortened. Safety accidents caused by looseness of the assembly bolt are avoided, after the first nut is screwed down, the top cover plate plays a role in limiting the position of the anchor rod, the anchor rod can be prevented from being disengaged from a drill hole, the structural stability of the assembly type ground anchor bolt is improved, the assembly type installation process is simple, and the construction time is short.

Description

Technical Field

[0001] This utility model relates to the field of ground anchor bolt technology, and in particular to an assembled ground anchor bolt. Background Technology

[0002] Ground anchor bolts are fasteners that connect the superstructure to the foundation. They are used to fix the structure by engaging the threaded part embedded in the concrete foundation with the nut or washer of the superstructure. They are usually used to withstand tensile and shear forces, ensure the stability of the structure, and are the foundation for fixing high-rise buildings.

[0003] Chinese Patent Publication No. CN206267170U discloses a structure for anchoring tower foundation anchor bolts on rock surfaces. It includes anchoring adhesive, reinforcing bars, and anchor bolts. Anchoring adhesive is poured into a rock hole, and the reinforcing bars are inserted into the hole. After the adhesive has solidified and anchored, a reinforcing cage for the tower foundation is placed inside, and the anchor bolts are then placed within the solidified and anchored cage. Concrete is then poured, thus anchoring the reinforcing cage, reinforcing bars, and anchor bolts. This method solves the problem of low construction efficiency for anchoring tower foundation anchor bolts on rock surfaces, bringing better practicality and speed to tower foundation construction.

[0004] The above-mentioned technology increases structural stability by integrating anchor bolts with reinforced concrete, but the construction process is cumbersome, time-consuming, and inefficient, which seriously slows down the construction progress of anchor bolts. Therefore, this utility model discloses a prefabricated ground anchor bolt to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated ground anchor bolt to solve the technical problems mentioned in the background art, such as the traditional ground anchor bolts being integrated with reinforced concrete pouring, which involves cumbersome construction steps, long construction time, low efficiency, and seriously slows down the construction progress of ground anchor bolts.

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

[0007] An assembled ground anchor bolt includes a base plate, a pressure plate, a top cover plate, and an anchor bolt. An assembled bolt is fixed to the upper middle part of the base plate. The assembled bolt passes through the pressure plate and the top cover plate in sequence. A first nut and a second nut are respectively installed on the outer wall of the assembled bolt and on the upper and lower sides of the top cover plate.

[0008] The bottom support plate has side slots on both sides, and the pressure plate has strip grooves on both sides of the mounting bolts. Anchor rods are embedded in the strip grooves. The top of the anchor rods contacts the top cover plate, and the bottom of the anchor rods passes through the adjacent side slots and is inserted into the inclined drill hole.

[0009] As a further scheme of the utility model, the anchor rod top end is equipped with a chamfered surface parallel to the top cover plate.

[0010] As a further scheme of the utility model, the width of the strip-shaped groove and the side opening groove is consistent with the diameter of the anchor rod.

[0011] As a further scheme of the utility model, the anchor rod is clamped and fixed between the side opening groove groove wall and the strip-shaped groove groove wall.

[0012] As a further scheme of the utility model, the first nut is in threaded connection with the assembly bolt and in contact with the top cover plate upper side wall.

[0013] As a further scheme of the utility model, the second nut is in threaded connection with the assembly bolt and in contact with the pressure bearing plate upper side wall.

[0014] As a further scheme of the utility model, the middle part of the pressure bearing plate is equipped with a first bolt hole corresponding to the assembly bolt, and the middle part of the top cover plate is equipped with a second bolt hole corresponding to the assembly bolt.

[0015] Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses an assembled ground anchor bolt, after the second nut is tightened, the bottom support plate and the pressure bearing plate can connect two anchor rods in inclined drill holes, the three can jointly form a wide upper and narrow lower anti-pulling structure, can effectively disperse and transmit stress, maximize the friction and engagement force between the anchor rod and the concrete ground, thereby significantly improving the anti-pulling capacity, providing reliable support for the upper building, avoiding safety accidents caused by the loosening of the assembly bolt, after the first nut is tightened, the top cover plate limits the position of the anchor rod, prevents the anchor rod from coming out of the drill hole, improves the structural stability of the assembled ground anchor bolt, and the assembly process is simple, the construction time is short, and the labor cost and the use cost of the construction equipment are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model is further explained in connection with the drawings and embodiments:

[0017] Figure 1 It is the appearance view of the utility model discloses a kind of assembled ground anchor bolt;

[0018] Figure 2 It is the sectional view of the utility model discloses a kind of assembled ground anchor bolt;

[0019] Figure 3 It is the structure diagram of the utility model discloses a kind of bottom support plate in assembled ground anchor bolt;

[0020] Figure 4 It is the structure diagram of the utility model discloses a kind of pressure bearing plate in assembled ground anchor bolt;

[0021] Figure 5The utility model provides a kind of assembled ground anchor bolt attached Figure 2 The structure enlarged view of A in the utility model.

[0022] In the drawing, the component list represented by each mark is as follows: 1, bottom support plate;2, pressure plate;3, top cover plate;4, anchor rod;11, assembly bolt;12, first nut;13, second nut;14, side slot;21, strip-shaped slot;22, first bolt hole;31, second bolt hole;41, bevel surface. DETAILED DESCRIPTION

[0023] The utility model is further described below in combination with examples.

[0024] Please refer to Figures 1-5 The utility model provides a kind of assembled ground anchor bolt, including bottom support plate 1, pressure plate 2, top cover plate 3 and anchor rod 4, and bottom support plate 1, pressure plate 2, top cover plate 3 and anchor rod 4 are all made of high-strength steel or cast iron.

[0025] Further, the middle upper side of the bottom support plate 1 is fixed with assembly bolt 11, the assembly bolt 11 is sequentially passed through pressure plate 2 and top cover plate 3, the middle of the pressure plate 2 is provided with first bolt hole 22 corresponding to assembly bolt 11, and the middle of the top cover plate 3 is provided with second bolt hole 31 corresponding to assembly bolt 11;

[0026] Specifically, after aligning and adhering pressure plate 2 and bottom support plate 1, first bolt hole 22 and second bolt hole 31 are aligned, to ensure that assembly bolt 11 can penetrate pressure plate 2 and top cover plate 3.

[0027] Further, the outer wall of the assembly bolt 11 and the upper and lower sides of the top cover plate 3 are respectively provided with first nut 12 and second nut 13;

[0028] Specifically, assembly bolt 11 is the core component of the entire ground anchor bolt system, for connecting bottom support plate 1, pressure plate 2 and top cover plate 3, and fixing the entire structure by nut.

[0029] Further, the first nut 12 is in threaded connection with the assembly bolt 11 and in contact with the upper side wall of the top cover plate 3;

[0030] Specifically, first nut 12 can move up and down along the thread of assembly bolt 11, and pre-tightening force is applied by tightening, when first nut 12 is tightened, it will be in close contact with the upper side wall of top cover plate 3, which can limit the upward movement of anchor rod 4, prevent anchor rod 4 from coming out of the inclined drill hole, thereby improving the structural stability of the entire assembled ground anchor bolt.

[0031] Further, the second nut 13 is in threaded connection with the assembly bolt 11 and in contact with the upper side wall of the pressure plate 2;

[0032] Specifically, the second nut 13 can move up and down along the thread of the assembly bolt 11 and apply a pre-tightening force by tightening, when the second nut 13 is tightened, it will be in close contact with the upper side wall of the pressure plate 2, which can firmly fix the pressure plate 2 on the bottom plate 1, the assembly bolt 11, prevent it from loosening or displacement.

[0033] Further, the bottom plate 1 is provided with a side slot 14 on both sides, and the pressure plate 2 is provided with a strip-shaped slot 21 on both sides of the assembly bolt 11, and the anchor rod 4 is embedded in the strip-shaped slot 21, the top end of the anchor rod 4 is in contact with the top cover plate 3, and the bottom end of the anchor rod 4 is inserted into the inclined drill hole after passing through the adjacent side slot 14;

[0034] Specifically, after the anchor rod 4 is inserted into the inclined drill hole, a large friction and bite force is formed between the anchor rod 4 and the concrete floor, and the bottom plate 1, the pressure plate 2 and the anchor rod 4 form an anti-pulling structure which is wide at the top and narrow at the bottom, when the assembly bolt 11 is stressed, the force is transmitted to the anchor rod 4 through the top cover plate 3, and then to the bottom plate 1 and the concrete floor through the anchor rod 4, forming a stable force transmission path.

[0035] Further, the width of the strip-shaped slot 21 and the side slot 14 is consistent with the diameter of the anchor rod 4;

[0036] Specifically, the width of the strip-shaped slot 21 and the side slot 14 is consistent with the diameter of the anchor rod 4, so that the anchor rod 4 can be tightly embedded in the slot and will not shake or loosen, and this tight fit ensures that the anchor rod 4 can stably transmit force when stressed, avoiding instability caused by gaps.

[0037] Further, the anchor rod 4 is clamped and fixed between the side slot 14 and the strip-shaped slot 21;

[0038] Specifically, the anchor rod 4 is clamped between the side slot 14 and the strip-shaped slot 21, which can provide sufficient restraint force to prevent the anchor rod 4 from moving horizontally or vertically when stressed, so that the anchor rod 4 can form an integral with the bottom plate 1 and the pressure plate 2 when stressed, and when the assembly bolt 11 is stressed upward, the anchor rod 4 will transmit the force to the concrete floor through friction and bite force, thereby resisting the upward force.

[0039] Further, the top end of the anchor rod 4 is provided with a beveled surface 41 parallel to the top cover plate 3;

[0040] Specifically, the design of the beveled surface 41 makes the contact between the top end of the anchor rod 4 and the top cover plate 3 more closely, when the top cover plate 3 is tightened by the first nut 12, the beveled surface 41 can effectively limit the upward movement of the anchor rod 4, prevent the anchor rod 4 from coming out of the inclined drill hole, by increasing the contact area, the beveled surface 41 can effectively reduce the stress concentration phenomenon, improve the service life of the anchor rod 4 and the top cover plate 3.

[0041] Working principle: in use, including the following steps:

[0042] Step one, in the concrete floor according to the preset distance to open two inclined drill hole;

[0043] Step two, between the two drill hole and put the bottom plate 1, make two drill hole respectively with two side slot 14 alignment, and the anchor rod 4 through the side slot 14 after the interference embedded in the drill hole;

[0044] Step three, the bearing plate 2 with the bottom plate 1 alignment, make the assembly bolt 11 through the first bolt hole 22, anchor rod 4 through the strip slot 21;

[0045] Step four, the second nut 13 is screwed on the outside of the assembly bolt 11, so that the second nut 13 pressure bearing plate 2;

[0046] Step five, the second bolt hole 31 of the top cover plate 3 is inserted into the assembly bolt 11, and the first nut 12 is screwed on the outside of the assembly bolt 11. After the first nut 12 is tightened, the top cover plate 3 is tightly pressed on the anchor rod 4;

[0047] Step six, when stressed, the two anchor rod 4 formed by the anti pull structure can prevent the assembly bolt 11 to move up, fully guarantee the stability of the structure of the upper building.

Claims

1. A prefabricated ground anchor bolt, comprising a base plate (1), a bearing plate (2), a top cover plate (3), and an anchor bolt (4), characterized in that, The upper middle part of the bottom support plate (1) is fixed with an assembly bolt (11). The assembly bolt (11) passes through the pressure plate (2) and the top cover plate (3) in sequence. The outer wall of the assembly bolt (11) and the upper and lower sides of the top cover plate (3) are respectively equipped with a first nut (12) and a second nut (13). The bottom support plate (1) has side slots (14) on both sides, and the pressure plate (2) has strip grooves (21) on both sides of the mounting bolts (11). Anchor rods (4) are embedded in the strip grooves (21). The top of the anchor rods (4) is in contact with the top cover plate (3), and the bottom of the anchor rods (4) passes through the adjacent side slots (14) and is inserted into the inclined drill hole.

2. The assembled ground anchor bolt according to claim 1, characterized in that: The top of the anchor rod (4) is provided with a beveled surface (41) parallel to the top cover plate (3).

3. The assembled ground anchor bolt according to claim 1, characterized in that: The widths of the strip groove (21) and the side slot (14) are both consistent with the diameter of the anchor rod (4).

4. The assembled ground anchor bolt according to claim 1, characterized in that: The anchor rod (4) is clamped and fixed between the side slot (14) wall and the strip slot (21) wall.

5. The assembled ground anchor bolt according to claim 1, characterized in that: The first nut (12) is threadedly connected to the assembly bolt (11) and contacts the upper side wall of the top cover plate (3).

6. The assembled ground anchor bolt according to claim 1, characterized in that: The second nut (13) is threadedly connected to the assembly bolt (11) and contacts the upper side wall of the pressure plate (2).

7. The assembled ground anchor bolt according to claim 1, characterized in that: The bearing plate (2) has a first bolt hole (22) in the middle corresponding to the mounting bolt (11), and the top cover plate (3) has a second bolt hole (31) in the middle corresponding to the mounting bolt (11).

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