Assembled pre-stressed anchor rod

Abstract

The utility model discloses an assembly type pre-stressed anchor rod which comprises a hollow anchor rod body, the surface of the hollow anchor rod body is movably sleeved with a stop-grouting plug, an adjusting cavity is formed in the stop-grouting plug, the bottom end of the stop-grouting plug is fixedly connected with a connecting rubber plate, and the side, close to the connecting rubber plate, of the stop-grouting plug is fixedly connected with an adjusting valve. The surface of the hollow anchor rod body is movably sleeved with an adjusting plate. The pre-stressed anchor rod and the grouting device are in butt joint through the grouting connector and are inserted into the hole groove, after the pre-stressed anchor rod moves by a certain depth, the stop-grouting plug makes contact with the inner wall of the hole groove, the pre-stressed anchor rod continues to move, the stop-grouting plug is made to be close to the adjusting plate, and due to the fact that the adjusting plate is in a cone shape, after the stop-grouting plug makes contact with the adjusting plate, the stop-grouting plug is made to be close to the adjusting plate. The adjusting plate extrudes the adjusting lantern ring composed of the connecting rubber plate and the adjusting valve, and the size of the adjusting lantern ring is increased, so that the adjusting lantern ring is attached to the inner wall of the hole groove, and leakage of the grout stopping material is effectively prevented.

Description

Technical Field

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

[0002] Anchor rod is an important component used for support and reinforcement in contemporary coal mines and engineering technology. It penetrates deep into the stratum or rock and soil, and forms a whole with the rock and soil anchor through the rod head or a certain length of the rod body, which is used to reinforce the rock mass or as a support method for geotechnical engineering. As a key component for support and reinforcement, anchor rod is widely used in engineering fields such as mines, slopes, tunnels, dams, etc. It is an important measure to ensure the stability and safety of engineering structures.

[0003] During the grouting process, in order to ensure a sealed space between the anchor casing and the anchor, thereby preventing the loss of grouting material, a grouting plug will be added to the anchor. However, since the inside of the hole groove after drilling is generally uneven, a gap is easily formed between the grouting plug and the hole groove, causing leakage of the grouting material. Utility Model Content

[0004] The purpose of the utility model is to provide an assembled prestressed anchor rod to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembled prestressed anchor rod, comprising a hollow anchor rod body, a slurry stop plug is movably sleeved on the surface of the hollow anchor rod body, an adjustment cavity is opened inside the slurry stop plug, a connecting rubber plate is fixedly connected to the bottom end of the slurry stop plug, an adjustment valve is fixedly connected to the side of the slurry stop plug close to the connecting rubber plate, an adjustment plate is movably sleeved on the surface of the hollow anchor rod body, a connecting plate is fixedly connected to the side of the adjustment plate away from the slurry stop plug, and a friction protrusion is fixedly connected to the surface of the connecting plate.

[0006] As a further preferred embodiment of the present technical solution, the inner wall of the stop plug is configured as a barb-shaped body, the connecting rubber plate and the regulating valve are fixedly connected, and there are multiple connecting rubber plates and regulating valves, and multiple connecting rubber plates and regulating valves form an regulating ring, and the regulating plate is in the shape of a cone.

[0007] As a further preferred embodiment of the present technical solution, the top end of the hollow anchor rod body is fixedly connected to a first screw, the surface of the first screw is threadedly connected to a reducing sleeve, the side of the reducing sleeve away from the first screw is threadedly connected to a second screw, and the end of the second screw away from the reducing sleeve is fixedly connected to a threaded steel rod body.

[0008] As a further preferred embodiment of the present technical solution, an anchor head is movably sleeved on the surface of the threaded steel rod body, a barb is fixedly connected to the surface of the anchor head, and an air hole is opened in the middle of the anchor head.

[0009] As a further preferred embodiment of the present technical solution, there are multiple barbs, the multiple barbs are symmetrically and evenly distributed, and the air holes and the threaded steel rod body form a feeding channel.

[0010] As a further preferred embodiment of the present technical solution, a tray is threadedly connected to the surface of the hollow anchor rod body, a fixing nut is threadedly connected to the surface of the hollow anchor rod body, a grouting joint is threadedly connected to the surface of the hollow anchor rod body, a rotating handle is fixedly connected to the surface of the grouting joint, and a connecting sleeve is threadedly connected to the bottom end of the grouting joint.

[0011] As a further preferred embodiment of the present technical solution, the tray is located between the adjusting plate and the fixing nut, the grouting joint is composed of a grouting pipe and a threaded sleeve, the connecting sleeve is located on the surface of the threaded sleeve, and the number of the rotating handles is two.

[0012] The utility model provides an assembled prestressed anchor rod, which has the following beneficial effects:

[0013] (1) After drilling a hole in a rock mass using a drill bit, the utility model uses a grouting joint to connect the prestressed anchor rod and the grouting device and inserts the prestressed anchor rod into the hole groove. After the prestressed anchor rod moves to a certain depth, the grouting plug contacts the inner wall of the hole groove. The prestressed anchor rod continues to move and makes the grouting plug approach the adjustment plate. Since the adjustment plate is in the shape of a cone, after the grouting plug contacts the adjustment plate, the adjustment plate squeezes the adjustment ring composed of the connecting rubber plate and the adjustment valve and increases its size, so that it fits with the inner wall of the hole groove, effectively preventing the leakage of the grouting material.

[0014] (2) The utility model completes the assembly of the prestressed anchor rod by installing the anchor head on the surface of the threaded steel rod body, installing the first screw rod and the second screw rod at the two ends of the reducer sleeve respectively, and installing the slurry stopper, the adjustment plate, the tray and the fixing nut on the hollow anchor rod body in sequence. It can then be comprehensively considered according to specific engineering geological conditions, construction requirements and economic efficiency, thereby improving the convenience of construction and adaptability to different construction conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the first screw and the second screw of the utility model;

[0017] Figure 3This is a schematic diagram of the slurry stopper structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the connecting rubber plate and the regulating valve structure of the utility model.

[0019] In the figure: 1. hollow anchor rod body; 2. grouting plug; 3. adjusting chamber; 4. connecting rubber plate; 5. adjusting valve; 6. adjusting plate; 7. connecting plate; 8. friction protrusion; 9. first screw rod; 10. reducing connecting sleeve; 11. second screw rod; 12. threaded steel rod body; 13. anchor head; 14. barb; 15. air hole; 16. tray; 17. fixing nut; 18. grouting joint; 19. turning handle; 20. connecting sleeve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1 and Figure 4 As shown, in the present embodiment, an assembled prestressed anchor rod comprises a hollow anchor rod body 1, a slurry stop plug 2 is movably sleeved on the surface of the hollow anchor rod body 1, an adjusting cavity 3 is opened inside the slurry stop plug 2, a connecting rubber plate 4 is fixedly connected to the bottom end of the slurry stop plug 2, an adjusting valve 5 is fixedly connected to the side of the slurry stop plug 2 close to the connecting rubber plate 4, an adjusting plate 6 is movably sleeved on the surface of the hollow anchor rod body 1, a connecting plate 7 is fixedly connected to the side of the adjusting plate 6 away from the slurry stop plug 2, and a friction protrusion 8 is fixedly connected to the surface of the connecting plate 7.

[0022] The prestressed anchor rod and the grouting device are connected by using the grouting joint 18 and inserted into the hole groove. After the prestressed anchor rod moves to a certain depth, the grouting plug 2 contacts the inner wall of the hole groove, and the prestressed anchor rod continues to move and makes the grouting plug 2 approach the adjustment plate 6. Since the adjustment plate 6 is in the shape of a cone, after the grouting plug 2 contacts the adjustment plate 6, the adjustment plate 6 squeezes the adjustment ring composed of the connecting rubber plate 4 and the adjustment valve 5 and increases its size so that it fits with the inner wall of the hole groove, effectively preventing leakage of the grouting material. A friction protrusion 8 is provided on the surface of the connecting plate 7, which can increase the friction between the adjustment plate 6 and the adjustment ring to prevent sliding.

[0023] The inner wall of the stop plug 2 is configured as a barb-shaped body, the connecting rubber plate 4 and the regulating valve 5 are fixedly connected, and there are multiple connecting rubber plates 4 and regulating valves 5, and multiple connecting rubber plates 4 and regulating valves 5 form an regulating ring, and the shape of the regulating plate 6 is a cone.

[0024] The top of the hollow anchor rod body 1 is fixedly connected to a first screw rod 9, the surface of the first screw rod 9 is threadedly connected to a reducer sleeve 10, the side of the reducer sleeve 10 away from the first screw rod 9 is threadedly connected to a second screw rod 11, and the end of the second screw rod 11 away from the reducer sleeve 10 is fixedly connected to a threaded steel rod body 12.

[0025] An anchor head 13 is movably sleeved on the surface of the threaded steel rod body 12 , a barb 14 is fixedly connected to the surface of the anchor head 13 , and an air hole 15 is opened in the middle of the anchor head 13 .

[0026] There are multiple barbs 14 , which are symmetrically and evenly distributed. The air holes 15 and the threaded steel rod body 12 form a feeding channel.

[0027] The surface of the hollow anchor rod body 1 is threadedly connected with a tray 16, the surface of the hollow anchor rod body 1 is threadedly connected with a fixing nut 17, the surface of the hollow anchor rod body 1 is threadedly connected with a grouting joint 18, the surface of the grouting joint 18 is fixedly connected with a rotating handle 19, and the bottom end of the grouting joint 18 is threadedly connected with a connecting sleeve 20.

[0028] By installing the anchor head 13 on the surface of the threaded steel rod body 12, installing the first screw rod 9 and the second screw rod 11 at the two ends of the reducer sleeve 10 respectively, and installing the slurry stop plug 2, the adjustment plate 6, the tray 16 and the fixing nut 17 on the hollow anchor rod body 1 in turn, the assembly of the prestressed anchor rod is completed, and then it can be comprehensively considered according to the specific engineering geological conditions, construction requirements and economy, thereby improving the convenience of construction and the adaptability to different construction conditions.

[0029] The tray 16 is located between the adjusting plate 6 and the fixing nut 17 . The grouting joint 18 is composed of a grouting pipe and a threaded sleeve. The connecting sleeve 20 is located on the surface of the threaded sleeve. Two rotating handles 19 are provided.

[0030] The utility model provides an assembled prestressed anchor rod, and the specific working principle is as follows:

[0031] When in use, after drilling a hole in the rock mass with a drill bit, the anchor head 13 is installed on the surface of the threaded steel rod body 12, the first screw rod 9 and the second screw rod 11 are installed at both ends of the reducer sleeve 10 respectively, and the stop grout plug 2, the adjustment plate 6, the tray 16 and the fixing nut 17 are installed on the hollow anchor rod body 1 in sequence, thereby completing the assembly of the prestressed anchor rod, and the prestressed anchor rod and the grouting device are connected by the grouting joint 18 and inserted into the hole groove. After the prestressed anchor rod moves to a certain depth, the stop grout plug 2 is connected to the hole groove. The inner wall of the groove is in contact with the prestressed anchor rod, and the prestressed anchor rod continues to move, and the stop grouting plug 2 is moved closer to the adjustment plate 6. Since the adjustment plate 6 is in the shape of a cone, after the stop grouting plug 2 contacts the adjustment plate 6, the adjustment plate 6 squeezes the adjustment ring composed of the connecting rubber plate 4 and the adjustment valve 5, and increases its size, so that it fits with the inner wall of the hole groove, effectively preventing the leakage of the stop grouting material. After the anchor head 13 moves to the bottom of the hole groove, the prestressed anchor rod is positioned in the drilled hole groove by the barb 14, and the hole groove can be grouted by the grouting device.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled prestressed anchor rod, comprising a hollow anchor rod body (1), characterized in that: A grout stop plug (2) is movably sleeved on the surface of the hollow anchor rod body (1), an adjustment cavity (3) is provided inside the grout stop plug (2), a connecting rubber plate (4) is fixedly connected to the bottom end of the grout stop plug (2), a side of the grout stop plug (2) close to the connecting rubber plate (4) is fixedly connected to an adjustment valve (5), an adjustment plate (6) is movably sleeved on the surface of the hollow anchor rod body (1), a side of the adjustment plate (6) away from the grout stop plug (2) is fixedly connected to a connecting plate (7), and a friction protrusion (8) is fixedly connected to the surface of the connecting plate (7).

2. The assembled prestressed anchor rod according to claim 1, characterized in that: The inner wall of the stop plug (2) is configured as a barb-shaped body, the connecting rubber plate (4) and the regulating valve (5) are fixedly connected, the connecting rubber plate (4) and the regulating valve (5) are provided in a plurality, the plurality of connecting rubber plates (4) and the regulating valve (5) form an regulating ring, and the regulating plate (6) is in the shape of a cone.

3. The assembled prestressed anchor rod according to claim 1, characterized in that: The top end of the hollow anchor rod body (1) is fixedly connected to a first screw rod (9), the surface of the first screw rod (9) is threadedly connected to a reducer sleeve (10), the side of the reducer sleeve (10) away from the first screw rod (9) is threadedly connected to a second screw rod (11), and the end of the second screw rod (11) away from the reducer sleeve (10) is fixedly connected to a threaded steel rod body (12).

4. The assembled prestressed anchor rod according to claim 3, characterized in that: An anchor head (13) is movably sleeved on the surface of the threaded steel rod body (12), a barb (14) is fixedly connected to the surface of the anchor head (13), and an air hole (15) is opened in the middle of the anchor head (13).

5. The assembled prestressed anchor rod according to claim 4, characterized in that: The number of the barbs (14) is multiple, and the barbs (14) are symmetrically and evenly distributed. The air holes (15) and the threaded steel rod body (12) form a feeding channel.

6. The assembled prestressed anchor rod according to claim 1, characterized in that: The surface of the hollow anchor rod body (1) is threadedly connected to a tray (16), the surface of the hollow anchor rod body (1) is threadedly connected to a fixing nut (17), the surface of the hollow anchor rod body (1) is threadedly connected to a grouting joint (18), the surface of the grouting joint (18) is fixedly connected to a rotating handle (19), and the bottom end of the grouting joint (18) is threadedly connected to a connecting sleeve (20).

7. The assembled prestressed anchor rod according to claim 6, characterized in that: The tray (16) is located between the adjustment plate (6) and the fixing nut (17); the grouting joint (18) is composed of a grouting pipe and a threaded sleeve; the connecting sleeve (20) is located on the surface of the threaded sleeve; and the number of the rotating handles (19) is two.

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