Side slope anchoring device

Abstract

The utility model belongs to the field of side slope anchoring, and particularly relates to a side slope anchoring device. The device comprises a hollow rod body, the upper end of the hollow rod body is sleeved with a bearing plate, a plurality of annularly-distributed supporting plates are arranged on the outer side of the hollow rod body, a limiting assembly is installed between each supporting plate and the hollow rod body, and a driving assembly used for driving all the supporting plates to be away from the hollow rod body at the same time is installed in the hollow rod body; the number of the bearing plates is two, the hollow rod body between the two bearing plates is sleeved with an auxiliary mechanism which is of a cross-shaped or T-shaped structure on the whole, and one side of the hollow rod body is provided with a connecting assembly used for connecting the auxiliary mechanism with an auxiliary mechanism on the other hollow rod body. The hollow rod bodies are driven to move downwards, under the limiting effect of the first connecting rods, prestress provided by the supporting plates is more stable, the influence range is larger, the hollow rod bodies are connected into a whole, and therefore the anchoring effect on the whole side slope is improved.

Description

Technical Field

[0001] The utility model belongs to the field of slope anchoring, in particular to a slope anchoring device. Background Art

[0002] The research object of geotechnical engineering is complex geological bodies. In the long geological period, due to the effects of geological tectonic movements, natural weathering and human activities, a large number of geological defects such as faults, bedding, joints, weak interlayers, karst grooves and karst troughs have been formed. Under certain time and conditions, the rock and soil body may be in a relatively stable equilibrium state; if the conditions change, the original equilibrium state may be destroyed. For example, during the excavation and construction of geotechnical engineering, the original stress field is redistributed, resulting in deformation of the rock and soil body, and then causing geological disasters such as collapse, subsidence, rockfall, landslide and ground subsidence. In order to prevent and control such disasters, a tension rod is often buried in the rock and soil body to mobilize and improve the self-strength and self-stabilization ability of the rock and soil body. This tension rod is called an anchor rod or anchor cable, and its role is anchoring.

[0003] Common anchor rods are usually composed of an anchor head, a rod body and a bearing plate. Prestressed anchor rods are usually required when anchor rods are used to support soil slopes with strict requirements on slope deformation control, poor slope stability during construction, and high soil slopes. Prestressed anchor rods mainly apply a certain pre-compressive stress to the surrounding rock through the anchoring force generated by the anchor head, actively reinforcing the surrounding rock. However, the anchoring of conventional prestressed anchor rods will gradually loosen over time, and the nuts need to be tightened frequently, and prestress is only generated at the anchor head. At the same time, when supporting a large slope, each anchor rod is independent of each other, resulting in poor anchoring effect on the overall slope. Utility Model Content

[0004] The purpose of the utility model is to provide a slope anchoring device, which has a more stable and wider range of prestressing force and can improve the overall anchoring effect of the slope.

[0005] The slope anchoring device comprises a vertically arranged hollow rod body, an anchor head is fixed to the bottom of the hollow rod body, a bearing plate is sleeved on the upper end of the hollow rod body, a plurality of support plates distributed in a ring are arranged on the outside of the hollow rod body, a limit assembly for limiting the corresponding support plate to move only radially along the hollow rod body is installed between each support plate and the hollow rod body, a driving assembly for driving all support plates to move away from the hollow rod body at the same time is installed in the hollow rod body, there are two bearing plates distributed up and down, an auxiliary mechanism with an overall "cross" or "T" shaped structure is sleeved on the hollow rod body between the two bearing plates, and a connecting assembly for connecting the auxiliary mechanism with an auxiliary mechanism on another hollow rod body is arranged on one side of the hollow rod body.

[0006] Furthermore, a plurality of support plates distributed in a ring shape are provided at one end of the hollow rod body close to the anchor head and close to the bearing plate.

[0007] Furthermore, the limit assembly includes two first connecting rods distributed up and down, and a mounting groove communicating with the inside and outside is opened on the side wall of the hollow rod body corresponding to the support plate. One end of the upper first connecting rod is hinged to the upper end of the support plate, and the other end is hinged to the upper end of the mounting groove; one end of the lower first connecting rod is hinged to the lower end of the support plate, and the other end is hinged to the lower end of the mounting groove.

[0008] Furthermore, a hinge seat distributed up and down is fixed on one side of the support plate facing the hollow rod body, one end of the first connecting rod is hinged on the corresponding hinge seat, pivots are fixed in the upper and lower ends of the mounting groove, and the other end of the first connecting rod is sleeved on the corresponding pivot and rotatably matched therewith.

[0009] Furthermore, the driving assembly includes a driving rod vertically arranged in the hollow rod body, a second connecting rod is arranged in each mounting groove, one end of the second connecting rod is hinged to the middle part of the corresponding support plate, the other end of the second connecting rod is hinged to the driving rod, and the hinge point between the second connecting rod and the driving rod is located above the hinge point between the second connecting rod and the support plate.

[0010] Furthermore, a grouting pipe threadedly matched with the hollow rod body is installed in the upper end thereof, the top of the driving rod is located in the grouting pipe, and a stopper for supporting the driving rod and through which mortar can pass is fixed in the grouting pipe.

[0011] Furthermore, the stopper is in the shape of a letter "I".

[0012] Furthermore, the auxiliary mechanism comprises a mounting sleeve sleeved on the hollow rod body, and three or four connecting rods are fixed on the side wall of the mounting sleeve.

[0013] Furthermore, the connecting assembly includes a connecting sleeve, one end of the connecting rod is located in the connecting sleeve and leaves a gap with the inner wall of the connecting sleeve, and both ends of the connecting sleeve are equipped with retaining assemblies for fixing the connecting rod and the connecting sleeve.

[0014] Furthermore, the retaining assembly is a plurality of bolts distributed in a ring shape, and each bolt is installed on the connecting sleeve and is threadedly matched therewith.

[0015] Furthermore, a slurry stopper is sleeved on the hollow rod body, and the slurry stopper is located at the bottom of the supporting plate below.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model drives the hollow rod body to move downward by rotating the grouting pipe, so that each support plate moves in the radial direction of the hollow rod body away from the hollow rod body at the same time under the action of the second connecting rod, and then presses against the borehole wall to support the rock layer. At the same time, under the limiting action of the first connecting rod, the arc surface of each support plate can be in contact with the borehole wall to the greatest extent and is always in a ring-shaped distribution state as a whole, so that the force on the rock layer is uniform and stable. In addition, a plurality of support plates distributed in a ring are arranged on the end of the hollow rod body close to the anchor head and close to the bearing plate, so that prestress is applied to the rock layer at multiple points for reinforcement, so as to achieve the effect of expanding the influence range of the prestress. In addition, a plurality of hollow rod bodies are connected into a whole by installing sleeves, connecting rods and connecting sleeves, so as to improve the anchoring effect of the overall slope. At the same time, the connecting rods are fixed with bolts distributed in a ring, which can effectively prevent the situation that the two connecting rods cannot be connected due to misalignment caused by terrain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 for Figure 1 Enlarged cross-sectional view of the middle BB;

[0021] Figure 4 It is a schematic diagram of the matching of the connecting rod, the connecting sleeve and the bolt;

[0022] The names of the components in the figure are: 1. hollow rod body 2. driving rod 3. slurry stopper 4. connecting rod 5. bearing plate 6. fastening nut 7. grouting pipe 8. mounting sleeve 9. connecting sleeve 10. support plate 11. anchor head 12. first connecting rod 13. second connecting rod 14. bolt. DETAILED DESCRIPTION

[0023] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0024] Example 1

[0025] The slope anchoring device described in this embodiment includes a vertically arranged hollow rod body 1, an anchor head 11 is fixed to the bottom of the hollow rod body 1, and a bearing plate 5 is sleeved on the upper end of the hollow rod body 1. Figure 1As shown, a fastening nut 6 threadedly matched with the hollow rod body 1 is sleeved on a section of the hollow rod body 1 located above the bearing plate 5, wherein the anchor head 11 can be a conventional anchor head with a hole or a prestressed anchor head, and the upper and lower ends of the hollow rod body 1 are both provided with external threads, so as to facilitate assembly into a longer rod body through a combined connecting sleeve;

[0026] A plurality of support plates 10 distributed in an annular shape are arranged on the outside of the hollow rod body 1, and two first connecting rods 12 distributed up and down are installed between each support plate 10 and the hollow rod body 1. A mounting groove communicating with the inside and outside is opened on the side wall of the hollow rod body 1 corresponding to each support plate 10, one end of the upper first connecting rod 12 is hinged to the upper end of the support plate 10, and the other end is hinged in the upper end of the mounting groove; one end of the lower first connecting rod 12 is hinged to the lower end of the support plate 10, and the other end is hinged in the lower end of the mounting groove (the two first connecting rods 12 in this paragraph constitute the integral part for limiting the corresponding support plate 10 to move only radially along the hollow rod body 1 The limiting component can also be four plug rods in practical applications, and the four plug rods are distributed in a rectangular shape on the side of the support plate 10 facing the hollow rod body 1), wherein the support plate 10 is an arc-shaped structure and is annular as a whole. The support plate 10 is installed and limited by two first connecting rods 12 hinged to the support plate 10 and the hollow rod body 1, thereby ensuring that the arc surface of each support plate 10 is in contact with the borehole wall to the greatest extent and is always in an annular distribution state as a whole, thereby making the force on the rock formation uniform and stable, and a plurality of annularly distributed support plates 10 are provided at one end of the hollow rod body 1 close to the anchor head 11 and close to the bearing plate 5, such as Figure 1 As shown, prestress is applied to the rock formation at multiple points for reinforcement, thereby achieving the effect of expanding the influence range of the prestress;

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, a hinge seat distributed up and down is fixed on one side of the support plate 10 facing the hollow rod body 1, one end of the first connecting rod 12 is hinged on the corresponding hinge seat, and pivots are fixed in the upper and lower ends of the mounting groove, and the other end of the first connecting rod 12 is sleeved on the corresponding pivot and rotatably matched therewith, and the hinge seat is a conventional "U"-shaped hinge seat, wherein the hinge seat hinged to the upper first connecting rod 12 is located below the pivot connected to the first connecting rod 12, and the hinge seat hinged to the lower first connecting rod 12 is located above the pivot connected to the first connecting rod 12, thereby avoiding conflicts during operation due to narrow space;

[0028] A driving rod 2 is vertically arranged in the hollow rod body 1, and a second connecting rod 13 is arranged in each mounting groove, one end of the second connecting rod 13 is hinged to the middle part of the corresponding support plate 10, and the other end of the second connecting rod 13 is hinged to the driving rod 2, and the hinge point between the second connecting rod 13 and the driving rod 2 is located above the hinge point between the second connecting rod 13 and the support plate 10 (the driving rod 2 and the second connecting rod 13 in this paragraph constitute the driving assembly for driving all the support plates 10 away from the hollow rod body 1 at the same time. In actual application, a mounting ring can also be fixed on the driving rod 2, and the other end of the second connecting rod 13 is hinged to the side wall of the mounting ring). In this embodiment, by moving the driving rod 2 downward, each support plate 10 is simultaneously moved in the radial direction of the hollow rod body 1 in the direction away from the hollow rod body 1 under the action of the second connecting rod 13, and then pressed against the borehole wall to support the rock formation;

[0029] like Figure 1 As shown, a grouting pipe 7 threadedly matched with the hollow rod body 1 is installed in the upper end thereof, the top of the driving rod 2 is located in the grouting pipe 7, a stopper for resisting the driving rod 2 and through which mortar can pass is fixed in the grouting pipe 7, and the hollow rod body 1 is driven to move downward by rotating the grouting pipe 7, thereby driving the support plate 10 to apply prestress to the rock formation; wherein one end of the grouting pipe 7 passes through the top of the fastening nut 6, so as to facilitate the staff to operate the grouting pipe 7, and the stopper is in an "I" shape or a "T" shape;

[0030] refer to Figure 1 and Figure 4 There are two bearing plates 5 and they are distributed up and down. A mounting sleeve 8 is sleeved on the hollow rod body 1 between the two bearing plates 5. Three or four connecting rods 4 are fixed on the side wall of the mounting sleeve 8 (the mounting sleeve 8 and the connecting rod 4 in this paragraph are an auxiliary mechanism of a "cross" or "T" shaped structure as a whole). A connecting sleeve 9 is arranged on one side of the hollow rod body 1. One end of the connecting rod 4 is located in the connecting sleeve 9 and a gap is left with the inner wall of the connecting sleeve 9. A plurality of bolts 14 distributed in an annular shape are installed at both ends of the connecting sleeve 9. Each bolt 14 is installed on the connecting sleeve 9 and is threadedly matched with it (the connecting sleeve 9 and the plurality of bolts in this paragraph are threadedly matched with each other). The bolt 14 as a whole constitutes the connecting component for connecting the auxiliary mechanism with the auxiliary mechanism on another hollow rod body 1, wherein several bolts 14 as a whole constitute the retaining component for fixing the connecting rod 4 and the connecting sleeve 9. In actual application, an anti-slip pad is fixed on one end of the bolt 14 located in the connecting sleeve 9); in this embodiment, several hollow rod bodies 1 are connected into a whole by installing the sleeve 8, the connecting rod 4 and the connecting sleeve 9, thereby improving the anchoring effect of the entire slope. At the same time, the connecting rod 4 is fixed by using the annularly distributed bolts 14, which can effectively prevent the situation where the two connecting rods 4 cannot be connected due to misalignment caused by terrain, etc.

[0031] The correspondence in this embodiment is correspondence in directions such as left corresponds to left, top corresponds to top, etc. For example, one end of the upper first connecting rod 12 is hinged to the hinge seat at the upper end of the support plate 10, and the other end of the first connecting rod 12 is correspondingly hinged to the pivot above the through slot.

[0032] When the present embodiment is in use, the hollow rod body 1 is first inserted into the borehole, and then the bearing plate 5, the mounting sleeve 8, another bearing plate 5 and the fastening nut 6 are successively put on the end of the hollow rod body 1 outside the borehole, and then the fastening nut 6 is screwed until the hollow rod body 1 is just in a stationary state (does not move without external force), and then the grouting pipe 7 is screwed into the end of the hollow rod body 1. As the grouting pipe 7 is screwed in, the driving rod 2 will also move deep into the rock formation, thereby causing all the support plates 10 to move radially away from the hollow rod body 1 and press against the borehole wall until the torque of the grouting pipe 7 is appropriate. Similarly, the remaining hollow rod bodies 1 are fixed, and then the adjacent connecting rods 4 are fixed together using the connecting sleeve 9, and finally the fastening nut 6 is tightened and cement mortar is poured.

[0033] Example 2

[0034] This embodiment further illustrates the technology. The hollow rod body 1 is provided with a stop plug 3, which is located at the bottom of the supporting plate 5 below. Figure 1 As shown, the grout stopper 3 can effectively prevent cement slurry from penetrating from the anchor hole, play a waterproof role, and can also increase the compressive strength and supporting stability of the anchor rod. The grout stopper 3 is in the shape of an inverted truncated cone and is made of rubber.

Claims

1. A slope anchoring device, comprising a vertically arranged hollow rod body (1), an anchor head (11) being fixed to the bottom of the hollow rod body (1), and a bearing plate (5) being sleeved on the upper end of the hollow rod body (1), characterized in that: A plurality of support plates (10) distributed in an annular shape are arranged on the outside of the hollow rod body (1); a limit assembly for limiting the corresponding support plate (10) to move only radially along the hollow rod body (1) is installed between each support plate (10) and the hollow rod body (1); a driving assembly for driving all the support plates (10) to simultaneously move away from the hollow rod body (1) is installed inside the hollow rod body (1); there are two bearing plates (5) distributed up and down; an auxiliary mechanism with an overall "cross" or "T"-shaped structure is sleeved on the hollow rod body (1) between the two bearing plates (5); and a connecting assembly for connecting the auxiliary mechanism with an auxiliary mechanism on another hollow rod body (1) is arranged on one side of the hollow rod body (1).

2. The slope anchoring device according to claim 1, characterized in that: The hollow rod body (1) is provided with a plurality of support plates (10) distributed in an annular shape at one end close to the anchor head (11) and one end close to the bearing plate (5).

3. The slope anchoring device according to claim 2, characterized in that: The limit assembly comprises two first connecting rods (12) distributed in an upper and lower manner, and a mounting groove communicating with the inside and outside is provided on the side wall of the hollow rod body (1) corresponding to the support plate (10), one end of the upper first connecting rod (12) is hinged to the upper end of the support plate (10), and the other end is hinged in the upper end of the mounting groove; one end of the lower first connecting rod (12) is hinged to the lower end of the support plate (10), and the other end is hinged in the lower end of the mounting groove.

4. The slope anchoring device according to claim 3, characterized in that: The support plate (10) is fixed with hinge seats distributed up and down on one side facing the hollow rod body (1), one end of the first connecting rod (12) is hinged on the corresponding hinge seat, pivots are fixed in the upper and lower ends of the installation groove, and the other end of the first connecting rod (12) is sleeved on the corresponding pivot and is rotatably matched therewith.

5. The slope anchoring device according to claim 2 or 4, characterized in that: The driving assembly comprises a driving rod (2) vertically arranged in a hollow rod body (1), a second connecting rod (13) is arranged in each mounting groove, one end of the second connecting rod (13) is hinged to the middle part of the corresponding support plate (10), the other end of the second connecting rod (13) is hinged to the driving rod (2), and the hinge point between the second connecting rod (13) and the driving rod (2) is located above the hinge point between the second connecting rod (13) and the support plate (10).

6. The slope anchoring device according to claim 5, characterized in that: A grouting pipe (7) threadedly matched with the hollow rod body (1) is installed in the upper end thereof, the top of the driving rod (2) is located in the grouting pipe (7), and a stopper for supporting the driving rod (2) and through which mortar can pass is fixed in the grouting pipe (7).

7. The slope anchoring device according to claim 6, characterized in that: The stopper is in a "I" shape.

8. The slope anchoring device according to claim 1, characterized in that: The auxiliary mechanism comprises a mounting sleeve (8) sleeved on a hollow rod body (1), and three or four connecting rods (4) are fixed on the side wall of the mounting sleeve (8).

9. The slope anchoring device according to claim 8, characterized in that: The connecting assembly comprises a connecting sleeve (9), one end of the connecting rod (4) is located in the connecting sleeve (9) and a gap is left between the end and the inner wall of the connecting sleeve (9), and both ends of the connecting sleeve (9) are equipped with retaining assemblies for fixing the connecting rod (4) and the connecting sleeve (9).

10. The slope anchoring device according to claim 9, characterized in that: The retaining assembly is a plurality of bolts (14) distributed in a ring shape, and each bolt (14) is installed on the connecting sleeve (9) and is threadably matched therewith.

11. The slope anchoring device according to claim 6 or 9, characterized in that: The hollow rod body (1) is sleeved with a slurry stopper (3), which is located at the bottom of the supporting plate (5) below.

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