Anchoring device for foundation pit supporting

Abstract

The anchoring device comprises an anchor rod main body and a bearing plate located at the top of the anchor rod main body, a conical head is arranged at the bottom end of the anchor rod main body, inserting plates extending outwards are symmetrically arranged in the anchor rod main body, through holes allowing the inserting plates to penetrate through are formed in the outer wall of the anchor rod main body, and the bearing plate is arranged at the top of the anchor rod main body. And an extension assembly connected with the two groups of inserting plates is arranged in the anchor rod main body. And through the matched design of the inserting plate and the extending assembly, the threaded rod rotates to drive the cross beam to move downwards, so that the L-shaped movable piece pushes the first sliding block and the second sliding block to move on the sliding table in the two side directions, then the inserting plate is pushed to extend outwards from the through hole, and fixing and non-return work of the anchor rod body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to an anchoring device for foundation pit support. Background Art

[0002] In the process of underground construction, anchor support is often used as an effective support method. It mainly plays the role of active reinforcement and stabilization of rock and soil. When in use, one end of the anchor is first anchored into the soil, and the other end is connected to other various forms of support structures to play a stabilizing role. In the foundation pit soil nail wall and composite soil nail wall support system, threaded steel anchor rods are often used as anchor bodies to improve the stability of the soil layer around the foundation pit.

[0003] Bolt support mainly changes the mechanical state of the surrounding rock itself through the anchor rods inside the surrounding rock, forming an integral and stable rock belt around the tunnel, and using the joint action of the anchor rod and the surrounding rock to achieve the purpose of maintaining the stability of the tunnel. Bolt support uses metal parts, wood parts, polymer parts or other materials to make poles, which are driven into the pre-drilled holes in the surface rock mass or the rock mass around the chamber. The surrounding rock and the stable rock mass are combined together by using the special structure of the head and the rod body and the tail support plate, or relying on the bonding effect. Therefore, the anchor rod has the function of constraining the loose surrounding rock to the stable surrounding rock. In addition, the anchor rod also has a shearing effect. On the one hand, it can control the development of rock formation deformation and delamination, and on the other hand, it can make the rock mass in a triaxial stress state, thereby improving the shear failure strength and load-increasing capacity of the rock mass, and has a reinforcing and strengthening effect. Since the anchor rods located in the rock formation need to withstand the force applied by the surrounding soil, the insufficient anchoring force of the existing anchor rods is likely to cause anchor failure and reduce the support safety.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes an anchoring device for foundation pit support to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] An anchoring device for foundation pit support comprises an anchor rod body and a pressure plate located at the top of the anchor rod body, a cone head is provided at the bottom end of the anchor rod body, plug plates extending outward are symmetrically provided inside the anchor rod body, a through hole is provided on the outer wall of the anchor rod body for the plug plates to pass through, and an extension component connected to two groups of the plug plates is provided inside the anchor rod body.

[0008] Preferably, the extension assembly includes a mounting plate disposed transversely within the anchor rod body, a slide is disposed at the bottom end of the mounting plate, and a slider 1 and a slider 2 are symmetrically disposed at the bottom end of the slide and are respectively connected to the two groups of the plug plates.

[0009] Preferably, both sides of the slider 1 and the slider 2 are obliquely provided with L-shaped movable parts that pass through the mounting plate, and the L-shaped movable parts are located on one side of the slider 1 and the slider 2 and are provided with travel holes, and the travel holes are provided with fixing columns corresponding to the slider 1 and the slider 2.

[0010] Preferably, a fixed shaft connected to the slide table is provided at the bending portion of the L-shaped movable part, and a guide hole is provided on the L-shaped movable part above the mounting plate.

[0011] Preferably, a crossbeam is provided inside the anchor rod body and between the four groups of L-shaped movable parts, and connecting columns penetrating the guide holes are provided on both sides of the crossbeam.

[0012] Preferably, a threaded rod extending outside the pressure plate is provided at the top end of the crossbeam, and the threaded rod is connected to the crossbeam via a bearing.

[0013] Preferably, a threaded hole matching the threaded rod is provided in the anchor rod body, and a knob is provided at the top of the threaded rod, and holes for the two groups of L-shaped movable parts to move are provided on the mounting plate.

[0014] The beneficial effects of the utility model are as follows: through the coordinated design of the plug plate and the extension component, the rotation of the threaded rod drives the crossbeam to move downward, so that the L-shaped movable part pushes the slider 1 and the slider 2 to move in both directions on the slide, and then pushes the plug plate to extend outward from the through hole, thereby realizing the fixed non-return work for the anchor rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of an anchoring device for foundation pit support according to an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of an extension assembly in an anchoring device for foundation pit support according to an embodiment of the utility model;

[0018] Figure 3 It is a side view of an L-shaped movable part in an anchoring device for foundation pit support according to an embodiment of the utility model.

[0019] In the figure:

[0020] 1. Anchor rod body; 2. Pressure plate; 3. Cone head; 4. Insert plate; 5. Through hole; 6. Mounting plate; 7. Slide; 8. Slider 1; 9. Slider 2; 10. L-shaped movable part; 11. Travel hole; 12. Fixed column; 13. Fixed shaft; 14. Guide hole; 15. Crossbeam; 16. Connecting column; 17. Threaded rod. DETAILED DESCRIPTION

[0021] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] According to an embodiment of the utility model, an anchoring device for foundation pit support is provided.

[0023] Embodiment 1;

[0024] like Figure 1-3 As shown, the anchoring device for foundation pit support according to the embodiment of the utility model includes an anchor rod body 1 and a pressure plate 2 located at the top of the anchor rod body 1, the bottom end of the anchor rod body 1 is provided with a cone head 3, the anchor rod body 1 is symmetrically provided with outwardly extending plug plates 4, the outer wall of the anchor rod body 1 is provided with a through hole 5 for the plug plates 4 to pass through, and the anchor rod body 1 is provided with an extension component connected to the two groups of the plug plates 4.

[0025] Embodiment 2:

[0026] like Figure 1-3 As shown, the extension component includes a mounting plate 6 arranged transversely in the anchor rod body 1, a slide 7 is provided at the bottom end of the mounting plate 6, and a slider 8 and a slider 2 9 are symmetrically provided at the bottom end of the slide 7, which are respectively connected to the two groups of the plug plates 4. Both sides of the slider 1 8 and the slider 2 9 are obliquely provided with an L-shaped movable part 10 passing through the mounting plate 6, and the L-shaped movable part 10 is provided with a travel hole 11 on one side of the slider 1 8 and the slider 2 9, and a fixing column 12 connected to the slider 1 8 and the slider 2 9 is provided in the travel hole 11, and a fixing shaft 13 connected to the slide 7 is provided at the bending part of the L-shaped movable part 10, and a guide hole 14 is provided on the L-shaped movable part 10 located above the mounting plate 6.

[0027] Embodiment three;

[0028] like Figure 1-3 As shown, a crossbeam 15 is provided in the anchor rod body 1 and between the four groups of L-shaped movable parts 10, and connecting columns 16 penetrating the guide holes 14 are provided on both sides of the crossbeam 15, and a threaded rod 17 extending to the outside of the pressure plate 2 is provided at the top of the crossbeam 15, and the threaded rod 17 is connected to the crossbeam 15 through a bearing, and a threaded hole matching the threaded rod 17 is provided in the anchor rod body 1, and a knob is provided at the top of the threaded rod 17, and holes for the two groups of L-shaped movable parts 10 to move are provided on the mounting plate 6.

[0029] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0030] In actual application, by inserting the anchor rod body 1 into the anchor hole and rotating the knob to drive the threaded rod 17 to rotate, the rotation of the threaded rod 17 drives the cross beam 15 to move downward, so that the connecting columns 16 on both sides of the cross beam 15 move downward in the guide hole 14, thereby pushing the L-shaped movable part 10 to rotate with the fixed axis 13 as the axis point, and the travel hole 11 at the bottom of the L-shaped movable part 10 pushes the slider 1 8 and the slider 2 9 to move in both directions on the slide 7 through the fixed column 12, thereby pushing the plug plate 4 to extend outward from the through hole 5, thereby realizing the fixed check work for the anchor rod body 1.

[0031] To sum up, with the help of the above-mentioned technical scheme of the utility model, through the matching design of the plug plate 4 and the extension component, the rotation of the threaded rod 17 drives the crossbeam 15 to move downward, so that the L-shaped movable part 10 pushes the slider 1 8 and the slider 2 9 to move in both directions on the slide 7, and then pushes the plug plate 4 to extend outward from the through hole 5, thereby realizing the fixed check work for the anchor rod body 1.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anchoring device for foundation pit support, characterized in that: The invention comprises an anchor rod body (1) and a pressure plate (2) located at the top of the anchor rod body (1); a cone head (3) is provided at the bottom end of the anchor rod body (1); a plug plate (4) extending outward is symmetrically provided inside the anchor rod body (1); a through hole (5) is provided on the outer wall of the anchor rod body (1) for the plug plate (4) to pass through; an extension component connected to two groups of the plug plates (4) is provided inside the anchor rod body (1); the extension component comprises a mounting plate (6) arranged transversely inside the anchor rod body (1); a slide table (7) is provided at the bottom end of the mounting plate (6); and the slide table (7) is symmetrically provided at the bottom end with two corresponding plug plates (4) connected to the two groups of the plug plates (4). The invention relates to a slider 1 (8) and a slider 2 (9), wherein both sides of the slider 1 (8) and the slider 2 (9) are obliquely provided with an L-shaped movable part (10) penetrating the mounting plate (6), and the L-shaped movable part (10) is provided with a travel hole (11) on one side of the slider 1 (8) and the slider 2 (9), and a fixing column (12) correspondingly connected to the slider 1 (8) and the slider 2 (9) is provided in the travel hole (11), and a fixing shaft (13) connected to the slide table (7) is provided at the bending part of the L-shaped movable part (10), and a guide hole (14) is provided on the upper side of the mounting plate (6) of the L-shaped movable part (10).

2. The anchoring device for foundation pit support according to claim 1, characterized in that: A crossbeam (15) is provided inside the anchor rod body (1) and between the four groups of L-shaped movable parts (10), and connecting columns (16) penetrating the guide holes (14) are provided on both sides of the crossbeam (15).

3. The anchoring device for foundation pit support according to claim 2, characterized in that: A threaded rod (17) extending to the outside of the pressure plate (2) is provided at the top end of the crossbeam (15); the threaded rod (17) is connected to the crossbeam (15) via a bearing.

4. The anchoring device for foundation pit support according to claim 3, characterized in that: The anchor rod body (1) is provided with a threaded hole matching the threaded rod (17), and the top of the threaded rod (17) is provided with a knob. The mounting plate (6) is provided with holes for the two groups of L-shaped movable parts (10) to move.

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