Anchor rod for loose ground

Abstract

The utility model discloses an anchor rod for loose ground, and relates to the technical field of engineering construction. The device structurally comprises a hollow outer rod, an inner rod, an external expansion rod and a sealing terminal, the inner rod is arranged in the hollow outer rod; the sealing terminal is mounted on the outer wall of the upper end part of the hollow outer rod; the hollow outer rod comprises a circular tube; four stand columns are fixed to the lower end face of the round pipe. Pointed cone cylinders are fixed at the lower ends of the four upright posts; the lower half part of the circular tube is axially provided with four groups of through holes through which external expansion rods penetrate; and one end of the outer expansion rod is hinged with the inner rod. Through the combined design of the inner rod, the outer expansion rod and the hollow outer rod and the arrangement of the arc-shaped steel bars on the outer wall of the hollow outer rod, the friction force between the anchor rod and poured cement is increased, the anchor rod forms a multi-layer support under the ground, and the stability of the anchor rod is effectively improved; the four groups of expanded external expansion rods form four layers of supporting parts with expanded areas, so that the contact area between the anchor rod and a soil layer is increased, and the anti-settling capacity of the anchor rod in the soft soil layer is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering construction, and particularly relates to an anchor rod for loose ground. Background Art

[0002] In the fields of border monitoring, geological exploration, construction engineering, etc., it is often necessary to quickly build temporary or semi-permanent working towers on the ground. These towers are usually relatively high and require a stable foundation to support their own weight and resist the influence of the external environment, such as wind force, etc. The traditional fixing method mostly uses cement-poured ground anchors. Although this method is stable and reliable, in some remote and out-of-the-way places, due to problems such as difficult raw material transportation, high cost, and long construction time, it is often difficult to meet the requirements of quick construction and movement.

[0003] Especially on the sandy ground with loose soil quality, the traditional ground anchors have a slow fixing speed and insufficient stability, and are prone to settlement or displacement, resulting in the instability or even overturning of the tower. In addition, during the installation process of the traditional ground anchors, there may also be problems such as the outpouring and splashing of cement mortar, which affect the construction efficiency and safety.

[0004] Therefore, developing a ground anchor rod that can be quickly installed and ensure stability is of great significance for improving the safety and applicability of the working tower. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an anchor rod for loose ground, which forms an anchor rod that can be quickly installed and has strong anti-settlement ability through the combination of a hollow outer rod, an inner rod, an outer expansion rod, a sealing terminal, and an end pressing device.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is an anchor rod for loose ground, which includes a hollow outer rod, an inner rod, an outer expansion rod, and a sealing terminal; the inner rod is placed inside the hollow outer rod; the sealing terminal is installed on the outer wall of the upper end of the hollow outer rod; the hollow outer rod includes a circular tube; four columns are fixed on the lower end surface of the circular tube; the lower ends of the four columns are fixed with a pointed cone tube; four groups of through holes for passing through the outer expansion rod are axially opened in the lower half of the circular tube, and each group of through holes includes four uniformly distributed rectangular through holes; one end of the outer expansion rod is hinged to the inner rod; the other end of the outer expansion rod passes through the rectangular through hole.

[0008] As a preferred technical solution of the utility model, a number of groups of convex portions are fixed on the outer wall of the hollow outer rod; each group of convex portions includes four uniformly arranged circular arc steel bars.

[0009] As a preferred technical solution of the present utility model, the cross-section of the inner rod is a square structure.

[0010] As a preferred technical solution of the present utility model, the outward expanding rod includes a semi-circular pipe; one end of the semi-circular pipe is hinged to the inner rod; a conical head is fixed at the other end of the semi-circular pipe.

[0011] As a preferred technical solution of the present utility model, the sealing terminal includes a sleeve that slidably cooperates with the outer wall of the circular pipe; a circular ring plate is fixed to the outer wall of the sleeve; two bolt-with-handles are threadedly penetrated and connected to the outer wall of the sleeve.

[0012] As a preferred technical solution of the present utility model, it further includes an end pressing device; two cylindrical rods are symmetrically fixed to the outer wall of the circular pipe; the end pressing device includes a gantry; a hook that is hooked and cooperated with the cylindrical rod is respectively fixed to the lower parts of the two side walls of the gantry; a lead screw is threadedly penetrated and installed at the center of the top surface of the gantry, and a tip is provided at the lower end of the lead screw; a rotating handle is fixed to the upper end of the lead screw.

[0013] The present utility model has the following beneficial effects:

[0014] 1. Through the combined design of the inner rod, the outward expanding rod and the hollow outer rod, and by arranging arc-shaped steel bars on the outer wall of the hollow outer rod to increase the friction force with the grouted cement, the anchor rod forms multi-level supports underground, effectively improving the stability of the anchor rod.

[0015] 2. Through the cooperation of the hollow outer rod, the inner rod, the outward expanding rod and the sealing terminal, the anchor rod with a specific depth can be quickly assembled, and the outward expanding rod can be quickly unfolded through the end pressing device, so that rapid installation can be realized, saving construction time.

[0016] 3. Four expanded support parts with enlarged areas are formed by four groups of unfolded outward expanding rods of the present utility model, increasing the contact area between the anchor rod and the soil layer and improving the anti-settlement ability of the anchor rod in soft soil layers.

[0017] 4. The design of the sealing terminal of the present utility model can position the depth of the anchor rod inserted into the ground and prevent the outward gushing and splashing of the cement mortar during grouting.

[0018] Of course, it is not necessarily required that any product implementing the present utility model simultaneously achieves all the above-mentioned advantages. Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the anchor rod for loosening the ground of the present utility model;

[0021] Figure 2 is Figure 1 axial sectional schematic diagram;

[0022] Figure 3 is Figure 2 local enlarged view at A in

[0023] Figure 4 Structural schematic diagram of the hollow outer rod;

[0024] Figure 5 is Figure 4 local enlarged view at B in

[0025] Figure 6 Structural schematic diagram of the outward expanding rod;

[0026] Figure 7 Structural schematic diagram of the sealing terminal;

[0027] Figure 8 Structural schematic diagram of the end pressing device.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1 - hollow outer rod, 2 - inner rod, 3 - outward expanding rod, 4 - sealing terminal, 5 - end pressing device, 11 - circular tube, 12 - column, 13 - pointed cone barrel, 14 - rectangular through hole, 15 - circular arc steel bar, 31 - semi - circular tube, 32 - conical head, 41 - sleeve, 42 - ring plate, 43 - bolt with handle, 44 - cylindrical rod, 51 - gantry, 52 - hook, 53 - lead screw, 54 - rotating handle. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model. Specific embodiment one:

[0032] Please refer to Figures 1-8 As shown, the utility model relates to an anchor rod for loosening the ground, which includes a hollow outer rod 1, an inner rod 2, an outward expansion rod 3 and a sealing terminal 4. The inner rod 2 is placed inside the hollow outer rod 1, and the cross-section of the inner rod 2 is a square structure. The sealing terminal 4 is installed on the outer wall of the upper end of the hollow outer rod 1. The hollow outer rod 1 includes a circular tube 11. Four columns 12 are fixed to the lower end surface of the circular tube 11. Four columns 12 are fixed to the lower end with a tapered cone 13. Four groups of through holes for passing through the outward expansion rod 3 are arranged axially in the lower half of the circular tube 11, and each group of through holes includes four uniformly distributed rectangular through holes 14. One end of the outward expansion rod 3 is hinged to the inner rod 2. The other end of the outward expansion rod 3 passes through the rectangular through hole 14.

[0033] As Figure 1 shown, when the inner rod 2 is placed inside the hollow outer rod 1 and the lower end of the inner rod 2 contacts the inner wall of the tapered cone 13, the upper end of the inner rod 2 is flush with the upper end of the hollow outer rod 1.

[0034] Among them, several groups of convex parts are fixed to the outer wall of the hollow outer rod 1. Each group of convex parts includes four arc-shaped steel bars 15 arranged evenly. The arrangement of the arc-shaped steel bars 15 on the outer wall of the hollow outer rod 1 effectively improves the friction between the hollow outer rod 1 and the poured cement, and improves the stability of the hollow outer rod 1 after installation.

[0035] Among them, the outward expansion rod 3 includes a semi-circular tube 31. One end of the semi-circular tube 31 is hinged to the inner rod 2. A conical head 32 is fixed to the other end of the semi-circular tube 31. The semi-circular tube 31 can extrude a fan-shaped cavity in the soil, and after pouring cement into the cavity, it is stably combined with the inner cavity of the semi-circular tube 31.

[0036] Among them, the sealing terminal 4 includes a sleeve 41 that is slidably matched with the outer wall of the circular tube 11. A circular ring plate 42 is fixed to the outer wall of the sleeve 41. Two handle bolts 43 are threadedly penetrated through the outer wall of the sleeve 41. The sealing terminal 4 can not only position the depth of the anchor rod inserted into the ground, but also prevent the outward gushing and splashing of the cement mortar during grouting.

[0037] In order to facilitate the operation of the inner rod 2, an end pressing device 5 is also included. Two cylindrical rods 44 are axially symmetrically fixed to the outer wall of the circular tube 11. The end pressing device 5 includes a gantry 51. A hook 52 that is hooked and matched with the cylindrical rod 44 is fixed to the lower part of the two side walls of the gantry 51 respectively. A lead screw 53 is threadedly penetrated and installed at the center of the top surface of the gantry 51, and a tip is provided at the lower end of the lead screw 53, and the tip presses against the upper end surface of the inner rod 2. A rotating handle 54 is fixed to the upper end of the lead screw 53.

[0038] Assemble and install the hollow outer rod 1, the inner rod 2, and the outward-expanding rod 3 together. The upper end of the inner rod 2 is initially placed above the upper end of the hollow outer rod 1. First, sleeved and installed the sealing terminal 4 on the outer wall of the hollow outer rod 1, adjust the distance between the sealing terminal 4 and the tapered cylinder 13 according to the depth to be anchored, and then fix it. After opening a hole for installing the anchor rod on the ground, place the assembled anchor rod into the hole. Release the inner rod 2 after the sealing terminal 4 touches the ground. The operator steps on the circular ring plate 42 as a counterweight. Immediately install the end pressing device 5 on the sealing terminal 4, and drive the screw rod 53 to press against the upper end of the inner rod 2 to press it down by manually rotating the rotating handle 54. During the process of pressing down the inner rod 2, the four groups of outward-expanding rods 3 expand outward and penetrate into the soil on the side wall of the hole. By continuously pressing down the inner rod 2, the four groups of outward-expanding rods 3 gradually unfold and form a cavity in the soil on the side wall of the hole, and terminate after the inner rod 2 completely enters the hollow outer rod 1. Then remove the end pressing device 5. Install the high-pressure grouting pipe at the end of the hollow outer rod 1 and grout it. Fill the hole for installing the anchor rod and the inside of the hollow outer rod 1 with mortar, and the hollow outer rod 1 is stably fixed in the hole for installing the anchor rod to form a stable anchor rod. In addition, four layers of enlarged support parts are formed at the four groups of expanded outward-expanding rods 3, increasing the contact area between the anchor rod and the soil layer, improving the anti-settlement ability of the anchor rod in the soft soil layer, and being beneficial to improving the stability of the overhead working tower frame above.

[0039] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not elaborate all the details, nor do they limit the present invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An anchor rod for loose ground, characterized in that: It includes a hollow outer rod (1), an inner rod (2), an outward expansion rod (3) and a sealing terminal (4); the inner rod (2) is placed inside the hollow outer rod (1); the sealing terminal (4) is installed on the outer wall of the upper end of the hollow outer rod (1); The hollow outer rod (1) includes a circular tube (11); four columns (12) are fixed on the lower end surface of the circular tube (11); a pointed cone tube (13) is fixed at the lower ends of the four columns (12); four groups of through holes for passing through the outward expansion rod (3) are axially opened in the lower half of the circular tube (11), and each group of through holes includes four uniformly distributed rectangular through holes (14); one end of the outward expansion rod (3) is hinged to the inner rod (2); the other end of the outward expansion rod (3) passes through the rectangular through hole (14).

2. The ground anchor for loosening the ground according to claim 1, wherein, A number of groups of raised parts are fixed on the outer wall of the hollow outer rod (1); each group of raised parts includes four arc-shaped steel bars (15) arranged evenly.

3. The anchor rod for loose ground according to claim 2, characterized in that, The cross-section of the inner rod (2) is a square structure.

4. The anchor rod for loose ground according to claim 3, characterized in that, The outward expansion rod (3) includes a semi-circular tube (31); one end of the semi-circular tube (31) is hinged to the inner rod (2); a conical head (32) is fixed at the other end of the semi-circular tube (31).

5. The anchor rod for loose ground according to claim 4, characterized in that, The sealing terminal (4) includes a sleeve (41) that is slidably matched with the outer wall of the circular tube (11); a circular ring plate (42) is fixed on the outer wall of the sleeve (41); two bolt with handles (43) are threadedly penetrated and connected through the outer wall of the sleeve (41).

6. The rock bolt for loose ground according to claim 5, characterized in that, It further includes an end pressing device (5); two cylindrical rods (44) are axially symmetrically fixed on the outer wall of the circular tube (11); the end pressing device (5) includes a gantry (51); a hook (52) that is hung and matched with the cylindrical rod (44) is fixed on each of the lower parts of the two side walls of the gantry (51); a lead screw (53) is threadedly penetrated and installed at the center of the top surface of the gantry (51), and a tip is provided at the lower end of the lead screw (53); a rotating handle (54) is fixed at the upper end of the lead screw (53).

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