Openable soil nail

Abstract

The utility model relates to the technical field of foundation pit excavation slope supporting, in particular to an openable soil nail which comprises a rod body and an opening assembly installed on the rod body. A conical head is mounted at one end of the rod body; the diameter of the conical head is greater than that of the rod body; the opening assembly comprises an installation block arranged on the rod body in a sleeving mode and a plurality of fan blades installed on the installation block, and the multiple fan blades are arranged around the conical head and clamp the conical head in the center. The problem that the anchoring depth is not enough due to the fact that the slope gradient is large and is close to a red line can be effectively solved, meanwhile, the anchoring strength is improved, the number of soil nails used by a slope is reduced, and the purposes of reducing cost and saving steel are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of slope support of foundation pit excavation, in particular to a soil nail capable of being opened. BACKGROUND

[0002] The soil nail is an elongated rod used for reinforcing or anchoring the in-situ soil.

[0003] When the slope of the foundation pit is excavated, a hole is formed on the slope by mechanical drilling or Luoyang shovel forming, a soil nail is placed in the hole, and concrete is grouted, the concrete is fixedly connected with the soil nail after solidification, and then a steel mesh is installed on the slope, and the steel mesh is fixedly connected with the exposed end of the soil nail.

[0004] When the slope is large or the distance to the red line is close, the anchoring strength can only be increased by increasing the length or density of the soil nail. The use of a micro pile composite soil nail wall can effectively reduce the anchoring depth of the soil nail, but the soil is disturbed during piling, which increases the instability of the slope during construction. Moreover, the traditional anchoring is achieved by tensioning the soil through the friction between the soil nail and the solidified concrete, the friction is relatively small, the front end of the soil is only the part of the grout penetrating into the soil and generating friction with the surrounding soil, the anchoring soil area is small and only relies on friction, and once the surrounding rainwater penetrates, the tensile strength is greatly affected. CONTENT OF THE INVENTION

[0005] In order to effectively solve the problem of insufficient anchoring depth of the slope with large slope and close distance to the red line, increase the anchoring strength, reduce the number of soil nails used by the slope, and achieve the goal of reducing cost and saving steel, the application provides a soil nail capable of being opened.

[0006] The application provides a soil nail capable of being opened, which adopts the following technical scheme:

[0007] The soil nail capable of being opened comprises a rod body and an opening assembly installed on the rod body.

[0008] One end of the rod body is provided with a tapered head, and the diameter of the tapered head is larger than the diameter of the rod body.

[0009] The opening assembly comprises a mounting block sleeved on the rod body and a plurality of fan leaves installed on the mounting block, the plurality of fan leaves are arranged around the tapered head and clamp the tapered head at the center.

[0010] By adopting the technical scheme, the rod body is inserted into the hole of the slope surface, the mounting block is moved along the rod body towards the cone head after the rod body is installed to the designated position, the plurality of leaves are moved towards the side of the cone body along with the movement of the mounting block, the plurality of leaves are gradually opened, and the opening area of the plurality of leaves is increased. After the plurality of leaves are opened, the rod body is inserted into the soil, the overall volume of the rod body is increased, the insertion of the soil nail is completed, and the grouting process is performed. By arranging the opening assembly, the overall volume of the rod body is increased, the anchoring effect is good, the use quantity of the slope soil nail is effectively reduced, and the goal of reducing the cost and saving the steel material is achieved.

[0011] Further, in order to better achieve the present application, the following arrangement structure is adopted: a thread is arranged on the rod body.

[0012] The opening assembly further comprises an adjusting nut, the adjusting nut is sleeved on the rod body and is in threaded connection with the rod body, and the adjusting nut is connected with the mounting block.

[0013] By adopting the technical scheme, the adjusting nut is rotated to drive the plurality of leaves to move, when the leaves are blocked by the soil, the adjusting nut is adjusted in time to push, so that the leaves are easily inserted into the soil, and the situation that the leaves cannot be opened and the mounting block slips is prevented.

[0014] Further, in order to better achieve the present application, the following arrangement structure is adopted: a rotating pipe is rotatably connected to the adjusting nut, and the rotating pipe is fixedly connected with the mounting block.

[0015] By adopting the technical scheme, during the rotation and movement of the adjusting nut, only the mounting block moves, so that the leaves on the mounting block can be directly inserted into the soil, the rotation of the leaves is reduced, and the leaves are more easily inserted into the soil.

[0016] Further, in order to better achieve the present application, the following arrangement structure is adopted: an adjusting assembly is arranged on the rod body; the adjusting assembly comprises an adjusting pipe and a connecting pipe, the adjusting pipe is sleeved on the rod body, the connecting pipe is sleeved on the adjusting nut and cooperates with the adjusting nut; and one end of the connecting pipe is connected with one end of the adjusting pipe.

[0017] By adopting the technical scheme, the adjusting assembly is arranged, the adjusting pipe is rotated to drive the adjusting nut to rotate, when the soil nail is inserted into the hole, the worker only needs to rotate the adjusting pipe to conveniently rotate the adjusting nut, so as to conveniently push the leaves.

[0018] Further, in order to better achieve the present application, the following arrangement structure is adopted: the adjusting assembly further comprises a fixing pipe, a rotary bearing is connected to one end of the fixing pipe, and a rotating pipe is installed at the other end of the rotary bearing; and the other end of the rotating pipe is connected with the adjusting pipe.

[0019] By adopting the technical scheme, the fixed pipe, the adapter bearing and the rotating pipe are arranged on the rod body, when the rotating pipe rotates, the mounting pipe, the adjusting pipe and the connecting pipe are driven to rotate, so that the adjusting nut rotating with the connecting pipe is driven to rotate, the adjusting nut is moved along the direction of the rod body, and the adjusting nut is moved to the side of the vertebral body, with the movement of the adjusting nut, the plurality of fan blades are moved to the side of the vertebral body, the plurality of fan blades are gradually opened, and the opening area of the plurality of fan blades is increased.

[0020] Further, in order to better realize the present application, the mounting pipe is arranged between the rotating pipe and the adjusting pipe.

[0021] By adopting the technical scheme, the adjusting assembly is divided into multiple sections, the length of each section is shortened, the transportation of the adjusting assembly is facilitated, and the separation from the rod body can be completed faster when disassembling.

[0022] Further, in order to better realize the present application, the rod body is in the form of a pipe, and a plurality of through holes are arranged on the rod body.

[0023] By adopting the technical scheme, the concrete can enter the rod body during grouting, and the strength of the rod body is increased.

[0024] Further, in order to better realize the present application, the rod body is provided with a pop-up assembly.

[0025] The pop-up assembly comprises a hook and a spring, one end of the hook is hingedly connected to the rod body, the spring is mounted on the rod body, one end of the spring is fixedly connected to the hook, and the spring drives the hook to open and pop up.

[0026] By adopting the technical scheme, when the spring pops up, the hook is opened, the pop-up assembly is opened, and the volume of the rod body is increased.

[0027] Further, in order to better realize the present application, the pop-up assembly comprises two hooks, the two hooks are symmetrically arranged on both sides of the rod body, and the spring is vertically arranged on the rod body and arranged between the two hooks.

[0028] By adopting the technical scheme, the volume of the rod body can be further increased, and the connection strength during anchoring is higher.

[0029] Further, in order to better realize the present application, a plurality of fixing screws are arranged on the fixed pipe, and the end portion of each fixing screw is rotatably connected with a ball.

[0030] By adopting the technical scheme, the plurality of fixing screws are abutted against the rod body by screwing the fixing screws, the stability of the rod body is increased, and the ball on the fixing screw is in contact with the rod body, so that the adjusting assembly can relatively move on the rod body when the adjusting assembly rotates.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. By setting the opening assembly, the overall volume of the rod body is increased, which has good anchoring effect, can effectively reduce the number of soil nails used in the slope, and achieve the goal of reducing cost and saving steel materials;

[0033] 2. By setting the pop-up assembly, the rod body and the back hook can have better connection strength with the concrete, thereby improving the anchoring effect;

[0034] 3. The use of soil nails and the length of soil nails can be reduced to achieve the same anchoring effect as traditional soil nails, greatly saving manpower and materials;

[0035] 4. Compared with using a micro pile composite soil nail wall, the soil nail can reduce the disturbance to the soil body of the slope and achieve the same anchoring effect, thereby reducing the construction cost and speeding up the progress;

[0036] 5. The overall structure is designed ingeniously, easy to operate, and cheap. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a schematic view of the soil nail installed on the electric steel sleeve on the threading machine in the embodiment;

[0038] Figure 2 It is a schematic view of the rod body in the embodiment;

[0039] Figure 3 It is a schematic view of the rod body connected to the cone head in the embodiment;

[0040] Figure 4 It is Figure 3 an enlarged view of part A in the embodiment;

[0041] Figure 5 It is a schematic view of the adjusting nut connected to the mounting block in the embodiment;

[0042] Figure 6 It is a schematic view of the adjusting assembly in the embodiment;

[0043] Figure 7 It is a schematic view of the adjusting pipe connected to the pipe in the embodiment;

[0044] Figure 8 It is a schematic view of the fixing screw on which the ball is installed in the embodiment.

[0045] Explanation of reference signs: 1, rod body; 11, sleeve; 12, tapered head; 13, strip-shaped hole; 2, pop-up assembly; 21, back hook; 22, spring; 3, opening assembly; 31, adjusting nut; 32, rotating pipe; 33, mounting block; 34, fan blade; 4, adjusting assembly; 41, fixed pipe; 42, rotating pipe; 43, mounting pipe; 44, adjusting pipe; 45, connecting pipe; 46, rotating bearing; 47, fixing screw; 48, ball. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] The present application discloses a kind of expandable soil nails. Refer to Figure 1 、 Figure 2 Expandable soil nail includes rod body 1, pop-up assembly 2, opening assembly 3 and adjusting assembly 4.

[0048] Refer to Figure 2 、 Figure 3 Rod body 1 is hollow metal pipe as a whole, is provided with thread in one end of rod body 1, and is provided with sleeve 11, and sleeve 11 is threadedly connected with the threaded end of rod body 1. The other end of sleeve 11 is fixedly connected with tapered head 12, tapered head 12 is conical, and the position of sleeve 11 and tapered head 12 is located at the center of the circular surface of tapered head 12. Wherein, the diameter of sleeve 11 and rod body 1 is same, and the inner wall of sleeve 11 is provided with thread. Tapered head 12 is made of concrete. A plurality of through holes are provided on rod body 1 to facilitate concrete injection.

[0049] Refer to Figure 2 、 Figure 4 Pop-up assembly 2 is arranged on rod body 1 as a whole, and a plurality of pop-up assemblies 2 are arranged on rod body 1, pop-up assembly 2 includes two back hooks 21 and two springs 22, two back hooks 21 are symmetrically arranged on both sides of rod body 1, and one end of back hook 21 is hinged to rod body 1. A strip-shaped hole 13 is provided on rod body 1, and one end of back hook 21 is hinged to rod body 1 in the strip-shaped hole 13. The spring 22 is fixedly connected to the rod body 1 vertically, one end of the spring 22 is fixedly connected to the rod body 1, and the other end is fixedly connected to the back hook 21. When the spring 22 is compressed, the two back hooks 21 shrink towards the direction of the rod body 1, and the back hook 21 is flipped away from the tapered head 12.

[0050] Refer to Figure 3 、Figure 5 The opening assembly 3 comprises an adjusting nut 31, a rotating pipe 32, a mounting block 33 and a plurality of flaps 34. The adjusting nut 31 is sleeved on the rod body 1 and is threadedly connected with the threaded position of the rod body 1. The rotating pipe 32 is rotationally connected with the adjusting nut 31. The mounting block 33 is in a semispherical shape. The spherical surface of the mounting block 33 is fixedly connected with the rotating pipe 32. A through hole is formed in the mounting block 33. Under the action of the through hole, the mounting block 33 can be sleeved on the rod body 1 together with the adjusting nut 31 and the rotating pipe 32. A sliding groove is formed in the mounting block 33. A sliding block that is slidably connected with the sliding groove is fixedly connected with the flap 34. The flap 34 is slidably connected with the mounting block 33 through the sliding groove. The flap 34 is made of a metal sheet. The flap 34 is in a shape of a bamboo leaf with a certain curvature, which is thick in the middle and thin at both sides. Therefore, the flap 34 is more easily inserted into the soil. The diameter of the mounting block 33 is smaller than the diameter of the tapered head 12. When the plurality of flaps 34 are mounted, the plurality of flaps 34 clamp the tapered head 12 at the center. With the rotation of the adjusting nut 31, the adjusting nut 31 moves towards the tapered head 12 together with the flaps 34. The plurality of flaps 34 are gradually opened and the opening area of the plurality of flaps 34 is increased.

[0051] The T-shaped groove is formed in one side of the adjusting nut 31. One end of the rotating pipe 32 is inserted into the T-shaped groove and is insertedly connected with the T-shaped groove. When the adjusting nut 31 rotates, the rotating pipe 32 is limited by the external force. With the movement of the adjusting nut 31, the rotating pipe 32 does not rotate.

[0052] Referring to Figure 6 , Figure 7 , Figure 8 The adjusting assembly 4 comprises a fixed pipe 41, a rotating pipe 42, a mounting pipe 43, an adjusting pipe 44 and a connecting pipe 45. A plurality of fixed screws 47 are penetratingly arranged on the fixed pipe 41. The plurality of fixed screws 47 are arranged at equal intervals along the circumference of the fixed pipe 41. A ball 48 is rotationally connected with the end of the fixed screw 47. The ball 48 is embedded in the end of the fixed screw 47. One end of the rotating pipe 42 is rotationally connected with one end of the fixed pipe 41. The other end of the rotating pipe 42 is threadedly connected with one end of the mounting pipe 43. The other end of the mounting pipe 43 is threadedly connected with one end of the adjusting pipe 44. The other end of the adjusting pipe 44 is fixedly connected with one end of the connecting pipe 45. The connecting pipe 45 is used to be connected with the adjusting nut 31. The connecting pipe 45 is sleeved on the adjusting nut 31 and is connected with the adjusting nut 31. When the connecting pipe 45 rotates, the adjusting nut 31 rotates together.

[0053] The adapter bearing 46 is arranged between the fixed pipe 41 and the rotating pipe 42. The two ends of the adapter bearing 46 are connected with the ends of the fixed pipe 41 and the rotating pipe 42. The rotational connection between the fixed pipe 41 and the rotating pipe 42 is realized through the adapter bearing 46.

[0054] The implementation method of the expandable soil nail is as follows Figures 1-7 First, the fixed tube 41, the rotating tube 42, the mounting tube 43, the adjusting tube 44 and the connecting tube 45 of the adjusting assembly 4 are connected together and sleeved on the rod body 1, so that the adjusting assembly 4 extrudes the pop-up assembly 2, the back hook 21 of the pop-up assembly 2 is retracted, and the spring 22 is in a compressed state. Then, the fixed screws 47 are tightened, so that the plurality of fixed screws 47 abut against the rod body 1, the stability of the rod body 1 is increased, and the balls 48 on the fixed screws 47 are in contact with the rod body 1, so that the adjusting assembly 4 can relatively move on the rod body 1 when the adjusting assembly 4 rotates. Then, the rod body 1 together with the adjusting assembly 4 is inserted into the hole of the slope surface, the rod body 1 is installed to the specified position, the electric reinforcing sleeve sleeve machine is connected with the fixed tube 41 and the rotating tube 42 of the adjusting assembly 4, and then the rotating tube 42 is controlled to rotate. When the rotating tube 42 rotates, the mounting tube 43, the adjusting tube 44 and the connecting tube 45 are driven to rotate, so that the adjusting nut 31 connected with the connecting tube 45 is driven to rotate, the adjusting nut 31 moves along the direction of the rod body 1, and the adjusting nut 31 is rotated to move toward the side of the vertebral body. With the movement of the adjusting nut 31, the plurality of fan blades 34 move toward the side of the vertebral body, the plurality of fan blades 34 are gradually expanded, and the overall expansion area of the plurality of fan blades 34 is increased. In the process of moving the adjusting nut 31, the rotating tube 42 moves together with the adjusting nut 31. After the plurality of fan blades 34 are expanded, the fixed screws 47 are loosened, and the adjusting assembly 4 is pulled down from the rod body 1, so that the adjusting assembly 4 is separated from the rod body 1. When the rod body 1 is separated from the adjusting assembly 4, the spring 22 of the pop-up assembly 2 is released from the compression, the back hook 21 is popped open, the pop-up assembly 2 is expanded, the overall volume of the rod body 1 is increased, the insertion of the soil nail is completed, and the grouting process is performed.

[0055] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, principle and the like of the present application should be covered by the protection scope of the present application.

Claims

1. An expandable soil nail, characterized by: The utility model relates to a kind of rod body (1) and the opening component (3) installed on rod body (1); One end of the rod body (1) is provided with a tapered head (12); the diameter of the tapered head (12) is greater than the diameter of the rod body (1); The opening component (3) includes a mounting block (33) sleeved on the rod body (1) and a plurality of fan leaves (34) mounted on the mounting block (33), the plurality of fan leaves (34) are arranged around the tapered head (12) and clamp the tapered head (12) at the center.

2. The expandable soil nail of claim 1, wherein: A thread is formed on the rod body (1); The opening component (3) further includes an adjusting nut (31), the adjusting nut (31) is sleeved on the rod body (1) and is threadedly connected with the rod body (1), and the adjusting nut (31) is connected with the mounting block (33).

3. The expandable soil nail of claim 2, wherein: A rotating pipe (32) is rotatably connected to the adjusting nut (31), and the rotating pipe (32) is fixedly connected with the mounting block (33).

4. The expandable soil nail of claim 2, wherein: The rod body (1) is provided with an adjusting assembly (4); the adjusting assembly (4) includes an adjusting pipe (44) and a connecting pipe (45), the adjusting pipe (44) is sleeved on the rod body (1), and the connecting pipe (45) is sleeved on the adjusting nut (31) and cooperates with the adjusting nut (31); one end of the connecting pipe (45) is connected with one end of the adjusting pipe (44).

5. The expandable soil nail of claim 4, wherein: The adjusting assembly (4) further includes a fixing pipe (41), one end of the fixing pipe (41) is connected with a rotating bearing (46), the other end of the rotating bearing (46) is provided with a rotating pipe (42); the other end of the rotating pipe (42) is connected with the adjusting pipe (44).

6. The expandable soil nail of claim 5, wherein: An installation pipe (43) is arranged between the rotating pipe (42) and the adjusting pipe (44).

7. The expandable soil nail of claim 1, wherein: The rod body (1) is in the form of a tube, and a plurality of through holes are formed in the rod body (1).

8. The expandable soil nail of claim 1, wherein: The rod body (1) is provided with a pop-up assembly (2); The pop-up assembly (2) includes a hook (21) and a spring (22), one end of the hook (21) is hingedly connected with the rod body (1); the spring (22) is mounted on the rod body (1), one end of the spring (22) is fixedly connected with the hook (21), and the spring (22) drives the hook (21) to open and pop up.

9. The expandable soil nail of claim 8, wherein: The pop-up assembly (2) includes two hooks (21); the two hooks (21) are symmetrically arranged on both sides of the rod body (1); the spring (22) is vertically arranged on the rod body (1), and the spring (22) is arranged between the two hooks (21).

10. The expandable soil nail of claim 5, wherein: A plurality of fixing screws (47) are arranged on the fixing pipe (41), and the end of the fixing screw (47) is rotatably connected with a ball (48).

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