A prestressed hollow anchor rod

Abstract

The utility model relates to the technical field of hollow anchor rods, and specifically discloses a prestressed hollow anchor rod, including a pad, an anchor rod base is arranged on the top of the pad, the bottom of the anchor rod base penetrates to the bottom of the pad, a slurry stopper and a locking nut are respectively sleeved on the outside of the anchor rod base and located at the top and bottom of the pad, a positioning component is sleeved on the top of the outside of the anchor rod base, and the positioning component includes a plurality of positioning screws, a connecting rod is connected to the bottom of the anchor rod base, a cone head is connected to the bottom of the connecting rod, and a plurality of flow holes are opened on the outside of the connecting rod. The utility model uses the positioning component, and the rotating sleeve is placed on the top of the anchor rod base, and it is rotated forward to rotate and move downward outside the anchor rod base, and the connecting plate is used to drive the rotating ring to rotate and move downward, and finally drive the lifting plate to move downward, and the positioning screw used subsequently penetrates the lifting plate and the pad and is screwed into the mounting component, thereby improving the stability of the pad.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow anchor rods, in particular to a prestressed hollow anchor rod. Background Art

[0002] Anchor rods refer to slender rods that penetrate deep into the rock and soil and control the deformation of the rock and soil. They may include pads, nuts, etc. As a tension member that penetrates into the stratum, one end of the anchor rod is connected to the engineering structure and the other end is deep into the stratum.

[0003] The utility model of patent authorization announcement number CN220621918U relates to an expansion shell type prestressed hollow anchor rod, including an anchor rod body, an anchor head, a stop sleeve, a slurry stop plug, a gasket and an anchor nut, the anchor rod part is hollow inside and the outer wall is provided with a thread; the anchor head is hollow inside, one end of which is threadedly connected to the anchor rod body, and the other end is provided with an outlet; the anchor head includes a fixed part and an expansion part slidably arranged on both sides of the fixed part, and the fixed part is detachably installed with a clamping assembly on the end face contacting the expansion part; the clamping assembly includes a shell and a clamping piece, a limit block and a reset plate arranged in the shell; the clamping piece is rotatably connected to the shell and one end extends out of the shell, and the limit block and the reset plate are correspondingly arranged on both sides of the clamping piece; the inner side of the expansion part is provided with a clamping groove matching the clamping piece; the stop sleeve, the slurry stop plug, the gasket laying nut are arranged on the anchor rod body in sequence, and the stop sleeve is arranged close to the anchor head. The utility model has the advantage of stable structure.

[0004] However, the above device still has some shortcomings in actual use. The most obvious one is the lack of positioning components for the gasket. The gasket as a whole occupies a larger area than the anchor rod. When it lacks positioning, the edge of the gasket is easy to shake, and the anchor rod will shake together over time, which brings great inconvenience to the use of the anchor rod. Therefore, in order to solve such problems, we propose a prestressed hollow anchor rod. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a prestressed hollow anchor rod.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A prestressed hollow anchor comprises a pad, wherein an anchor base is arranged on the top of the pad, the bottom of the anchor base penetrates to the bottom of the pad, a slurry stopper and a locking nut are respectively sleeved on the top and bottom of the pad outside the anchor base, a positioning component is sleeved on the top of the outside of the anchor base, the positioning component comprises a plurality of positioning screws, a connecting rod is connected to the bottom of the anchor base, a cone head is connected to the bottom of the connecting rod, a plurality of flow holes are opened on the outside of the connecting rod, a plurality of moving grooves are opened on the bottom of the anchor base, and a plurality of expansion components are installed between the bottom of the anchor base and the top of the cone head.

[0008] Preferably, the positioning component includes a rotating sleeve, which is threadedly mounted on the top of the outside of the anchor rod base, and the outside of the rotating sleeve is connected to a plurality of connecting plates, and the plurality of connecting plates are commonly connected to a rotating ring on one side away from the rotating sleeve, and the outside of the rotating ring is movably connected to a lifting plate through a bearing, and a plurality of positioning screws are threadedly penetrated and installed on the lifting plate, and the bottom thread of the positioning screws penetrates the pad.

[0009] Preferably, the expansion component comprises an expansion plate and a guide rod, the expansion plate is located between the bottom of the anchor rod base and the top of the cone head, and the guide rod is installed inside the movable groove.

[0010] Preferably, a moving block and a spring are respectively sleeved on the outside of the guide rod, one side of the spring is connected to the moving block, the other side of the spring is connected to the inner wall of the moving groove, the bottom of the moving block is connected to a connecting block, and one side of the connecting block is connected to the expansion plate.

[0011] Preferably, a slider is connected to the bottom of the inner wall of the expansion plate, and the bottom of the slider is in sliding contact with the top of the cone head.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model uses a positioning component. The rotating sleeve is placed on the top of the anchor rod base. It is rotated forward to make it rotate and move downward outside the anchor rod base. The connecting plate is used to drive the rotating ring to rotate and move downward, and finally the lifting plate is driven downward. The positioning screw used subsequently penetrates the lifting plate and the pad and is screwed into the installation component, thereby improving the stability of the pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the axonometric drawing of the structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 Bottom view of

[0016] Figure 3 For this utility model Figure 1 Left view of;

[0017] Figure 4 It is a top view of the expansion component of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the positioning component of the utility model;

[0019] Figure 6 It is a partial bottom view of the anchor rod base of the utility model.

[0020] In the figure: 1. expansion component; 101. expansion plate; 102. connecting block; 103. guide rod; 104. spring; 105. moving block; 106. slider; 2. anchor rod base; 3. pad; 4. positioning component; 41. lifting plate; 42. rotating ring; 43. rotating sleeve; 44. positioning screw; 45. connecting plate; 5. slurry stop plug; 6. locking nut; 7. moving groove; 8. flow hole; 9. cone head; 10. connecting rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-Figure 6 A prestressed hollow anchor comprises a pad 3, an anchor base 2 is arranged on the top of the pad 3, the bottom of the anchor base 2 passes through the bottom of the pad 3, a grout stopper 5 and a locking nut 6 are respectively sleeved on the top and bottom of the pad 3 outside the anchor base 2, a positioning component 4 is sleeved on the top of the outside of the anchor base 2, the positioning component 4 comprises a plurality of positioning screws 44, a connecting rod 10 is connected to the bottom of the anchor base 2, a cone head 9 is connected to the bottom of the connecting rod 10, a plurality of flow holes 8 are opened on the outside of the connecting rod 10, a plurality of moving grooves 7 are opened at the bottom of the anchor base 2, and a plurality of expansion components 1 are installed between the bottom of the anchor base 2 and the top of the cone head 9.

[0023] As a technical optimization scheme of the utility model, the positioning component 4 includes a rotating sleeve 43, which is threadedly sleeved on the top of the outside of the anchor base 2, and the outside of the rotating sleeve 43 is connected to a plurality of connecting plates 45, and a plurality of connecting plates 45 are commonly connected to a rotating ring 42 on the side away from the rotating sleeve 43, and the outside of the rotating ring 42 is movably connected to a lifting plate 41 through a bearing, and a plurality of positioning screws 44 are threadedly installed on the lifting plate 41, and the bottom thread of the positioning screws 44 penetrates the pad 3; the rotating sleeve 43 is respectively connected to the rotating ring 42 through the connecting plate 45, which is conducive to driving the rotating ring 42 to rotate.

[0024] As a technical optimization solution of the utility model, the expansion component 1 includes an expansion plate 101 and a guide rod 103. The expansion plate 101 is located between the bottom of the anchor base 2 and the top of the cone head 9, and the guide rod 103 is installed inside the movable groove 7. The guide rod 103 can be installed through the movable groove 7, and the top of the movable block 105 can be stored at the same time.

[0025] As a technical optimization solution of the utility model, a moving block 105 and a spring 104 are respectively sleeved on the outside of the guide rod 103, one side of the spring 104 is connected to the moving block 105, and the other side of the spring 104 is connected to the inner wall of the moving groove 7, and the bottom of the moving block 105 is connected to a connecting block 102, and one side of the connecting block 102 is connected to the expansion plate 101; through the connecting block 102, the moving block 105 is conveniently connected to the expansion plate 101.

[0026] As a technical optimization solution of the utility model, a slider 106 is connected to the bottom of the inner wall of the expansion plate 101, and the bottom of the slider 106 is in sliding contact with the top of the cone head 9; the slider 106 can be used to restrict the bottom of the expansion plate 101 to prevent the expansion plate 101 from tilting when moving.

[0027] When the utility model is in use, after the installation of the backing plate 3 and the anchor base 2 is completed, the locking nut 6 is placed on the top of the anchor base 2, and the locking nut 6 is rotated forward to rotate and move downward and finally contact the backing plate 3. The rotating sleeve 43 is placed on the top of the anchor base 2, and it is rotated forward to rotate and move downward outside the anchor base 2, and the connecting plate 45 is used to drive the rotating ring 42 to rotate and move downward, and finally drive the lifting plate 41 to move downward, and then the positioning screw 44 is used to penetrate the lifting plate 41 and the backing plate 3 and screw into the installation component, thereby improving the stability of the backing plate 3. The external grouting equipment is connected to the anchor base 2, and grouting is injected into the anchor base 2. The injected slurry flows out from the flow hole 8, pushing the expansion plate 101 to the side away from the connecting rod 10. After the injected slurry solidifies, the expansion plate 101 is fixed, making it difficult to pull out the hollow anchor and improving the stability.

[0028] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A prestressed hollow anchor rod, comprising a pad (3), characterized in that: An anchor rod base (2) is arranged on the top of the pad (3), the bottom of the anchor rod base (2) penetrates to the bottom of the pad (3), a grout stopper (5) and a locking nut (6) are respectively sleeved on the top and bottom of the pad (3) outside the anchor rod base (2), a positioning component (4) is sleeved on the top of the outside of the anchor rod base (2), the positioning component (4) includes a plurality of positioning screws (44), a connecting rod (10) is connected to the bottom of the anchor rod base (2), a cone head (9) is connected to the bottom of the connecting rod (10), a plurality of flow holes (8) are opened on the outside of the connecting rod (10), a plurality of moving grooves (7) are opened on the bottom of the anchor rod base (2), and a plurality of expansion components (1) are installed between the bottom of the anchor rod base (2) and the top of the cone head (9).

2. A prestressed hollow anchor rod according to claim 1, characterized in that: The positioning component (4) comprises a rotating sleeve (43), the rotating sleeve (43) being threadedly sleeved on the top of the outside of the anchor rod base (2), the outside of the rotating sleeve (43) being connected to a plurality of connecting plates (45), the side of the plurality of connecting plates (45) away from the rotating sleeve (43) being commonly connected to a rotating ring (42), the outside of the rotating ring (42) being movably connected to a lifting plate (41) via a bearing, a plurality of positioning screws (44) being threadedly penetrated and installed on the lifting plate (41), and the bottom threads of the positioning screws (44) being threadedly penetrated through the pad (3).

3. The prestressed hollow anchor rod according to claim 1, characterized in that: The expansion component (1) comprises an expansion plate (101) and a guide rod (103); the expansion plate (101) is located between the bottom of the anchor rod base (2) and the top of the cone head (9); and the guide rod (103) is installed inside the movable groove (7).

4. A prestressed hollow anchor rod according to claim 3, characterized in that: The guide rod (103) is respectively sleeved with a moving block (105) and a spring (104), one side of the spring (104) is connected to the moving block (105), the other side of the spring (104) is connected to the inner wall of the moving groove (7), the bottom of the moving block (105) is connected to a connecting block (102), and one side of the connecting block (102) is connected to the expansion plate (101).

5. The prestressed hollow anchor rod according to claim 3, characterized in that: The bottom of the inner wall of the expansion plate (101) is connected to a sliding block (106), and the bottom of the sliding block (106) is in sliding contact with the top of the cone head (9).

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