Snakelike anti-shearing anchor rod

Abstract

The utility model provides a snakelike shear-resistant anchor rod, and relates to the technical field of anchor rods. The snakelike shear-resistant anchor rod comprises a straight rod, a snakelike rod, a tray, a nut and a gasket, the straight rod and the snakelike rod are hollow, the snakelike rod is fixedly communicated to one end of the straight rod, a side groove is formed in the straight rod, a movable insertion rod is rotationally connected to the interior of the side groove through a rotating shaft, and a connecting block is fixedly connected to one side face of the movable insertion rod. According to the device, the whole device is inserted into a drilled anchoring hole, then one end of a connecting pull rod is driven by a driving mechanism to get close to an opening of a straight rod, and a movable insertion rod is pulled to turn over in a side groove under the connecting action of an elastic soft rod, so that the movable insertion rod is inclined and abuts against the inner wall of the anchoring hole; and then grouting is conducted in the anchoring holes through the straight rods, the device and the wall body are more firmly combined together under the action of the movable inserting rods, and the anchoring force between the device and the rock mass is increased.

Description

Technical Field

[0001] The utility model relates to an anchor rod, in particular to a serpentine shear-resistant anchor rod, belonging to the technical field of anchor rods. Background Art

[0002] Anchor rods are the most basic component of tunnel support in modern coal mines. They reinforce the surrounding rock of the tunnel so that the surrounding rock can support itself. Anchor rods are not only used in mines, but also in engineering technology to reinforce the main body of slopes, tunnels, and dams.

[0003] Chinese patent announcement number CN202610801U discloses an anchor rod, including a rod body, a nut and a pad. The rod body has a full thread shape; the cross section of the rod body is connected to the nut; and a pad is provided at the rear end of the rod body. The anchor rod has high tensile strength after hot rolling and is suitable for different driving depths. It is superior to the common threaded steel anchor rods on the market, has low cost, and can be widely used in large-scale water conservancy projects, continuous beams and large frame structures in industrial and civil buildings, large and medium span bridges on highways and railways, nuclear power plants and ground anchors and other projects.

[0004] However, the inventor of the above-mentioned device believes that there are certain defects. The above-mentioned device inserts the anchor rod into the anchor hole and fixes the anchor rod by grouting into the anchor hole. However, the anchoring force between the anchor rod and the wall is mainly determined by the bonding force of the slurry material, which leads to a relatively limited pulling force applied to the anchor rod. It is easy to have quality problems such as the anchor rod and the grouting body falling off from the anchor hole at the same time. For this reason, the utility model provides a serpentine shear anchor rod. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the utility model is to provide a serpentine shear anchor rod in order to solve the above problems, so as to solve the problem that the anchor rod has low anchoring strength in the prior art and the anchor rod and the grouting body fall off from the anchor hole at the same time.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a serpentine shear anchor rod, comprising a straight rod, a serpentine rod, a tray, a nut and a gasket, the straight rod and the serpentine rod are both hollow, the serpentine rod is fixedly connected to one end of the straight rod, a side groove is opened on the straight rod, a movable plug rod is rotatably connected to the inside of the side groove through a rotating shaft, a side surface of the movable plug rod is fixedly connected to a connecting block, one end of the connecting block is fixedly connected to an elastic soft rod, a connecting pull rod is provided inside the straight rod, the other end of the elastic soft rod is fixedly connected to the connecting pull rod, and a driving mechanism for driving the connecting pull rod to rise is provided inside the straight rod.

[0009] Preferably, the driving mechanism comprises a movable sleeve threadedly connected to the inside of the straight rod, one end of the connecting rod is connected to the movable sleeve, and the movable sleeve is raised inside the straight rod by rotating the movable sleeve to pull one end of the connecting rod to rise.

[0010] Preferably, a through groove is provided on the movable sleeve, a fixed rod is fixedly connected to the inside of the through groove, one end of the connecting rod passes through the fixed rod and extends to the top of the fixed rod, and a stop block is fixedly connected to the top of the connecting rod. Under the action of the fixed rod and the stop block, the connecting rod does not rotate during the rotation of the movable sleeve, but the connecting rod is pulled to rise during the rising of the movable sleeve.

[0011] Preferably, the movable sleeve is arranged on the upper part of the inner wall of the straight rod, and the cross section of the through groove is a regular hexagon. The regular hexagonal through groove is convenient for driving the movable sleeve to rotate by a hexagonal wrench.

[0012] Preferably, the tray is sleeved on one end of a straight rod, an external threaded interface is provided at one end of the straight rod, and the nut is threadedly connected to the outer surface of the external threaded interface. By installing the nut on the external threaded interface at one end of the straight rod, the tray is tightened.

[0013] Preferably, the gasket is sleeved on one end of the straight rod, and the gasket is arranged between the tray and the nut, so that the nut is prevented from loosening.

[0014] Preferably, there are multiple groups of movable insertion rods, which are distributed on the outer surface of the straight rod in a linear array. The connection strength with the hole is increased by providing multiple groups of movable insertion rods.

[0015] The utility model provides a serpentine shear anchor rod, which has the following beneficial effects:

[0016] 1. The device is inserted as a whole into the drilled anchor hole, and then the driving mechanism is used to drive one end of the connecting rod to approach the opening of the straight rod. Under the connection action of the elastic soft rod, the movable plug rod is pulled to flip inside the side groove so that the movable plug rod is inclined and pressed against the inner wall of the anchor hole. Then, grouting is performed into the anchor hole through the straight rod. Under the action of the movable plug rod, the device and the wall are more firmly combined, thereby increasing the anchoring force between the device and the rock mass.

[0017] 2. The device drives the movable sleeve to rotate inside the straight rod by inserting a wrench into the through groove, thereby driving one end of the connecting rod to approach the opening of the straight rod, so as to pull multiple movable plug rods to flip together, and under the action of the fixed rod and the stopper, the connecting rod will not rotate with the movable sleeve during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall stereogram of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified schematic diagram;

[0020] Figure 3 It is a cutaway stereogram of a straight rod of the utility model;

[0021] Figure 4 For the utility model Figure 3 Enlarged schematic diagram at S;

[0022] Figure 5 It is a schematic diagram of the structure of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the movable sleeve of the utility model;

[0024] Figure 7 It is a cross-sectional view of the movable sleeve of the utility model.

[0025]

Main component symbol description

[0026] 1. Straight rod; 11. Side groove; 12. External thread interface; 2. Snake rod; 3. Movable plug rod; 31. Connecting block; 32. Elastic soft rod; 4. Connecting pull rod; 41. Stop block; 5. Movable sleeve; 51. Through groove; 52. Fixed rod; 6. Tray; 7. Nut; 8. Gasket. DETAILED DESCRIPTION

[0027] The utility model embodiment provides a serpentine shear-resistant anchor rod.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7, a serpentine shear anchor rod, comprising a straight rod 1, a serpentine rod 2, a tray 6, a nut 7 and a gasket 8. The straight rod 1 and the serpentine rod 2 are both hollow, and the serpentine rod 2 is fixedly connected to one end of the straight rod 1. The end of the straight rod 1 away from the serpentine rod 2 is a grouting port, which is convenient for injecting slurry into the straight rod 1 and filling the anchor hole. The straight rod 1 and the serpentine rod 2 form an anchor rod as a whole. The serpentine rod 2 away from the straight rod 1 is provided with a slurry outlet. The straight rod 1 is provided with a side groove 11. The inside of the side groove 11 is rotatably connected with a movable plug rod 3 through a rotating shaft. A side surface of the movable plug rod 3 is fixedly connected with a connecting block 31. The number of movable plug rods 3 is multiple groups, and the multiple groups of movable plug rods 3 are distributed on the outer surface of the straight rod 1 in a linear array. After the anchor rod is inserted into the drilled anchor hole as a whole, the movable plug rod 3 is driven to flip a certain angle, so that one end of the movable plug rod 3 is in a tight state with the anchor hole, which increases the stability of the overall installation of the anchor rod in the anchor hole.

[0029] Please refer again Figure 3 , Figure 4 and Figure 5 One end of the connecting block 31 is fixedly connected to an elastic soft rod 32, and a connecting pull rod 4 is provided inside the straight rod 1. The other end of the elastic soft rod 32 is fixedly connected to the connecting pull rod 4. By pulling one end of the connecting pull rod 4 close to the grouting port of the straight rod 1, the movable insertion rod 3 is pulled to flip under the action of the elastic soft rod 32. Under the action of the elastic soft rod 32, the movable insertion rod 3 and the straight rod 1 remain horizontal when the anchoring unit is inserted into the anchor hole, so as to facilitate the smooth insertion of the anchor rod.

[0030] Please refer again Figure 5 , Figure 6 and Figure 7 The straight rod 1 is provided with a driving mechanism for driving the connecting rod 4 to rise. The driving mechanism includes a movable sleeve 5 threadedly connected to the inside of the straight rod 1, one end of the connecting rod 4 is connected to the movable sleeve 5, and a through groove 51 is opened on the movable sleeve 5. A fixed rod 52 is fixedly connected to the inside of the through groove 51, one end of the connecting rod 4 passes through the fixed rod 52 and extends to the top of the fixed rod 52, and a stopper 41 is fixedly connected to the top of the connecting rod 4. The movable sleeve 5 is arranged on the upper part of the inner wall of the straight rod 1, and the cross-section of the through groove 51 is a regular hexagon. The wrench is inserted into the inside of the straight rod 1 through the grouting port and finally inserted into the inside of the through groove 51. The movable sleeve 5 is driven to rotate by the wrench, so that the movable sleeve 5 moves closer to the grouting port of the straight rod 1, thereby pulling the connecting rod 4 closer to the grouting port of the straight rod 1, and under the action of the fixed rod 52 and the stopper 41, the movable sleeve 5 will not rotate with the rotation of the movable sleeve 5 during the rotation process.

[0031] Please refer again Figure 1 and Figure 3The tray 6 is sleeved on one end of the straight rod 1, and an external threaded interface 12 is provided at one end of the straight rod 1. The nut 7 is threadedly connected to the outer surface of the external threaded interface 12. The gasket 8 is sleeved on one end of the straight rod 1, and the gasket 8 is arranged between the tray 6 and the nut 7. After the anchor rod is inserted into the anchor hole as a whole, the tray 6 is sleeved on one end of the straight rod 1 to cover the anchor hole to prevent the slurry from leaking during the grouting process. Then, the gasket 8 is sleeved on one end of the straight rod 1 and tightened on one end of the straight rod 1 through the external threaded interface 12 to fix the position of the tray 6, and the nut 7 is prevented from loosening under the action of the gasket 8.

[0032] Working principle: insert the snake rod 2 and the straight rod 1 of the device into the drilled anchor hole, then put the tray 6 on one end of the straight rod 1 to cover the anchor hole, put the gasket 8 on one end of the straight rod 1, and tighten it on one end of the straight rod 1 through the external thread interface 12 to fix the position of the tray 6, then insert the wrench into the grouting port and insert it into the through groove 51 to drive the movable sleeve 5 to rotate inside the straight rod 1, so that the movable sleeve 5 rotates close to the grouting port of the straight rod 1, and then connect the pull rod 4 and the connecting rod 4. The movable plug rod 3 is pulled to flip under the connection action of the connecting block 31 and the elastic soft rod 32, so that one end of the movable plug rod 3 is in a tight state with the anchor hole, and grouting is performed into the interior of the straight rod 1 through the grouting port at one end of the straight rod 1, and the slurry fills the anchor hole through the side groove 11 and the slurry outlet hole at one end of the serpentine rod 2. After the grouting is completed, the grouting port of the straight rod 1 is closed, and under the action of the movable plug rod 3, the device and the wall are more firmly combined together, thereby increasing the anchoring force between the device and the rock mass.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A serpentine shear anchor, comprising a straight rod (1), a serpentine rod (2), a tray (6), a nut (7) and a gasket (8), characterized in that: The straight rod (1) and the serpentine rod (2) are both hollow, the serpentine rod (2) is fixedly connected to one end of the straight rod (1), a side groove (11) is provided on the straight rod (1), a movable plug rod (3) is rotatably connected inside the side groove (11) via a rotating shaft, a connecting block (31) is fixedly connected to one side of the movable plug rod (3), one end of the connecting block (31) is fixedly connected to an elastic soft rod (32), a connecting rod (4) is provided inside the straight rod (1), the other end of the elastic soft rod (32) is fixedly connected to the connecting rod (4), and a driving mechanism for driving the connecting rod (4) to rise is provided inside the straight rod (1).

2. The serpentine shear anchor according to claim 1, characterized in that: The driving mechanism comprises a movable sleeve (5) threadedly connected inside the straight rod (1), and one end of the connecting rod (4) is connected to the movable sleeve (5).

3. The serpentine shear anchor according to claim 2, characterized in that: The movable sleeve (5) is provided with a through slot (51), the interior of the through slot (51) is fixedly connected to a fixing rod (52), one end of the connecting rod (4) passes through the fixing rod (52) and extends to the top of the fixing rod (52), and the top of the connecting rod (4) is fixedly connected to a stopper (41).

4. The serpentine shear anchor according to claim 3, characterized in that: The movable sleeve (5) is arranged on the upper part of the inner wall of the straight rod (1), and the cross section of the through groove (51) is a regular hexagon.

5. The serpentine shear anchor according to claim 1, characterized in that: The tray (6) is sleeved on one end of the straight rod (1), one end of the straight rod (1) is provided with an external thread interface (12), and the nut (7) is threadedly connected to the outer surface of the external thread interface (12).

6. The serpentine shear anchor according to claim 1, characterized in that: The gasket (8) is sleeved on one end of the straight rod (1), and the gasket (8) is arranged between the tray (6) and the nut (7).

7. The serpentine shear anchor according to claim 1, characterized in that: The movable insertion rods (3) are provided in a plurality of groups, and the plurality of groups of movable insertion rods (3) are distributed on the outer surface of the straight rod (1) in a linear array.

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