Mining longitudinal-rib-free deformed steel bar type anchor rod

Abstract

The utility model discloses a mining longitudinal rib-free deformed steel bar type anchor rod, which comprises an anchor rod, the anchor rod consists of a rod body and a connecting part, an expansion mechanism is arranged in the rod body, and the expansion mechanism comprises a mounting groove, a threaded sleeve, a rotating screw rod, an inner hexagonal head, a sliding rod, a group of grooves, a plurality of groups of hinge seats and a group of expansion blocks. The anchor rod has the advantages that through the expansion mechanism arranged in the rod body, after the anchor rod is installed, the sealing cover is unscrewed, the hexagon socket head is rotated clockwise, and the group of expansion blocks are driven to be opened through the sliding rod, so that the purpose of expansion of the anchor rod is achieved, meanwhile, an anchoring agent can flow into the installation groove, tight combination of the anchoring agent and the anchor rod is achieved, and the anchor rod is prevented from being damaged. The supporting strength is enhanced, and the constraining force on rocks is improved.

Description

Technical Field

[0001] The utility model relates to the field of threaded steel anchor rods, in particular to a threaded steel anchor rod without longitudinal ribs for mining. Background Art

[0002] Threaded steel anchor rod is a new type of anchor rod that saves materials, labor and strength. It has a broad prospect for promotion and application, and its performance reaches the standard level. It has a reasonable structure, full thread and full length of anchor rod, and has a higher bearing capacity than the same specification anchor rod. The threaded steel anchor rod body can match the anchor hole diameter and resin drug roll diameter. It has the characteristics of strong anchor force, high elongation, safety and reliability, high quality and low consumption, and easy use.

[0003] The ribless threaded steel anchor is an anchor made by a special processing technology. The strength of the threaded section is greater than the strength of the rod body. The threaded section has good bending and shear resistance. It is a new type of anchor for high-strength support of parallel lanes. The existing patent application number is CN202220281406.1, which discloses a threaded steel resin anchor. By setting openings, through holes and connecting cavities, the bonding force between the anchor and the anchor is improved, the support strength is strengthened, and the restraint on the rock is improved. However, by using a single method of opening a hole in the rod body, the anchor is not easy to enter the anchor hole during installation, which affects the bonding effect between the anchor and the anchor.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility Model Content

[0005] In view of the above defects, the utility model provides a threaded steel anchor rod without longitudinal ribs for use in mining, so as to solve the problem of expansion and tightening of the threaded steel anchor rod without longitudinal ribs for use in mining.

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

[0007] A threaded steel anchor rod without longitudinal ribs for mining, comprising an anchor rod, the anchor rod being composed of a rod body and a connecting part, wherein a tensioning mechanism is arranged in the rod body;

[0008] The expansion mechanism includes an installation groove, a threaded sleeve, a rotating screw, a hexagonal head, a sliding rod, a group of grooves, several groups of articulated seats and a group of expansion blocks. The installation groove is opened in the anchor rod, the threaded sleeve is installed on the right side of the installation groove, the rotating screw is threadedly inserted in the threaded sleeve, the hexagonal head is installed at the right end of the rotating screw, the sliding rod is slidably installed on the left side of the installation groove and is movably connected to the left end of the rotating screw, a group of grooves are opened on both sides of the rod body and are connected to the installation groove, several groups of articulated seats are movably installed in one group of grooves, and a group of expansion blocks are installed at the front ends of several groups of articulated seats.

[0009] Furthermore, a group of expansion blocks are staggered with a plurality of limiting holes and strip holes.

[0010] Furthermore, one end of each of the plurality of articulated seats is hinged in the corresponding groove via a pin, and the other end is slidably installed in the corresponding strip hole via a slider.

[0011] Furthermore, the two sides of the sliding rod are movably hinged to a plurality of sets of hinged seats through a plurality of sets of connecting rods, and a detachable sealing cover is threadedly installed on the right end of the anchor rod.

[0012] Furthermore, the outer surface of the rod body is tapped with equidistant and unidirectional left-handed threads, and the outer surface of the connecting part is tapped with equidistant and unidirectional right-handed threads.

[0013] Furthermore, a spherical washer is sleeved on the outside of the connection part, an anchor plate is connected to the right side of the spherical washer, a nut is threadedly connected to the right end of the connection part, and a friction washer is installed between the spherical washer and the nut.

[0014] The utility model provides a longitudinal rib-free threaded steel anchor rod for mining, which has the following beneficial effects: through the expansion mechanism provided in the rod body, after the anchor rod is installed, the sealing cover is unscrewed, the hexagonal head is rotated clockwise, and a group of expansion blocks are driven to open through the sliding rod, thereby achieving the purpose of expanding the anchor rod. At the same time, the anchoring agent can flow into the installation groove to achieve a close combination of the anchoring agent and the anchor rod, thereby enhancing the support strength and improving the constraint force on the rock. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a threaded steel anchor rod without longitudinal ribs for mining described in the utility model.

[0016] Figure 2 It is a schematic diagram of the sliding rod of the utility model.

[0017] Figure 3 The utility model is a schematic diagram of a group of expansion blocks.

[0018] Figure 4 It is a schematic diagram of the sealing cover of the utility model.

[0019] Figure 5 It is a schematic diagram of the spherical washer, anchor plate, nut and friction washer described in the utility model.

[0020] In the figure: 1. anchor rod; 2. rod body; 3. connecting part; 4. mounting groove; 5. threaded sleeve; 6. rotating screw; 7. hexagonal head; 8. sliding rod; 9. groove; 10. hinge seat; 11. expansion block; 12. limiting hole; 13. strip hole; 14. pin shaft; 15. slider; 16. connecting rod; 17. sealing cover; 18. spherical washer; 19. anchor plate; 20. nut; 21. friction washer. DETAILED DESCRIPTION

[0021] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1-5 As shown: a mining-use threaded steel anchor rod without longitudinal ribs, including an anchor rod 1, the anchor rod 1 is composed of a rod body 2 and a connecting portion 3, and a tightening mechanism is arranged in the rod body 2; the tightening mechanism includes a mounting groove 4, a threaded sleeve 5, a rotating screw 6, a hexagonal head 7, a sliding rod 8, a group of grooves 9, a plurality of groups of hinged seats 10 and a group of tightening blocks 11, the mounting groove 4 is opened in the anchor rod 1, the threaded sleeve 5 is installed on the right side of the mounting groove 4, the rotating screw 6 is threadedly inserted in the threaded sleeve 5, the hexagonal head 7 is installed at the right end of the rotating screw 6, the sliding rod 8 is slidably installed on the left side of the mounting groove 4, and is movably connected to the left end of the rotating screw 6, a group of grooves 9 is opened on both sides of the rod body 2, and is connected to the mounting groove 4, a plurality of groups of hinged seats 10 are movably installed in a group of grooves 9, and a group of tightening blocks 11 is installed in Several groups of front ends of articulated seats 10; a group of tightening blocks 11 are staggered with several limiting holes 12 and strip holes 13; several groups of articulated seats 10 are respectively hinged at one end in the corresponding groove 9 through a pin shaft 14, and the other end is slidably installed in the corresponding strip hole 13 through a slider 15; the inner sides of the sliding rod 8 are movably hinged with several groups of articulated seats 10 through several groups of connecting rods 16, and a removable sealing cover 17 is threadedly installed on the right end of the anchor rod 1; the outer surface of the rod body 2 is tapped with equidistant unidirectional left-handed threads, and the outer surface of the connecting part 3 is tapped with equidistant unidirectional right-handed threads; the outside of the connecting part 3 is covered with a spherical washer 18, and an anchor plate 19 is connected to the right side of the spherical washer 18, and a nut 20 is threadedly connected to the right end of the connecting part 3, and a friction washer 21 is installed between the spherical washer 18 and the nut 20.

[0022] The working principle of this embodiment is as follows: the outer surface of the rod body 2 is tapped with equidistant and unidirectional left-handed threads, and the outer surface of the connecting part 3 is tapped with equidistant and unidirectional right-handed threads;

[0023] During installation: the installation groove 4 is opened in the anchor rod 1, the threaded sleeve 5 is installed on the right side of the installation groove 4, the rotating screw 6 is threadedly inserted in the threaded sleeve 5, the hexagonal head 7 is installed at the right end of the rotating screw 6, the sliding rod 8 is slidably installed in the left side of the installation groove 4, and is movably connected with the left end of the rotating screw 6, a group of grooves 9 are opened on both sides of the rod body 2, and are connected with the installation groove 4, several groups of hinge seats 10 are movably installed in a group of grooves 9, a group of expansion blocks 11 are installed at the front end of several groups of hinge seats 10, and a group of expansion blocks 11 are staggered with several limiting holes 12 and strip holes 13, several groups of hinge seats 10 are respectively hinged at one end in the corresponding groove 9 through the pin shaft 14, and the other end is slidably installed in the corresponding strip hole 13 through the slider 15, and grooves are opened on both sides of the sliding rod 8. Through several groups of connecting rods 16 and several groups of articulated seats 10, the right end of the anchor rod 1 is threadedly installed with a detachable sealing cover 17. A group of expansion blocks 11 are initially received in a group of grooves 9. At this time, the pin shaft 14 is located in the corresponding limit hole 12. During installation, the operator first determines the anchor hole position according to the design requirements, drills holes with a drilling rig, and then blows out the rock powder in the hole with compressed air, sends the anchoring agent to the bottom of the hole, and starts stirring with the anchor rod 1. At the same time, unscrew the sealing cover 17, turn the hexagonal head 7 clockwise, and drive the sliding rod 8 to slide to the right by rotating the screw 6. Several groups of connecting rods 16 on both sides of the sliding rod 8 push several groups of articulated seats 10, and the slider 15 slides to the left in the strip hole 13, driving a group of expansion blocks 10 to open, thereby achieving the purpose of tightening the anchor rod 1. Figure 1 As shown, a group of expansion blocks 10 are respectively provided with guide grooves, through which the anchoring agent can flow into the installation groove 4, so as to achieve a close combination of the anchoring agent and the anchor rod 1, thereby enhancing the support strength and improving the restraint force on the rock. Finally, the anchor plate 19, the spherical washer 18 and the friction washer 21 are installed, and the nut 20 is tightened with a special wrench.

[0024] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A longitudinal rib-free threaded steel anchor for use in mining, comprising an anchor (1), wherein the anchor (1) is composed of a rod body (2) and a connecting portion (3), and is characterized in that: The rod body (2) is provided with an expansion mechanism; The expansion mechanism comprises a mounting groove (4), a threaded sleeve (5), a rotating screw (6), a hexagonal head (7), a sliding rod (8), a group of grooves (9), a plurality of groups of hinged seats (10) and a group of expansion blocks (11), wherein the mounting groove (4) is opened in the anchor rod (1), the threaded sleeve (5) is installed on the right side of the mounting groove (4), the rotating screw (6) is threadedly inserted in the threaded sleeve (5), the hexagonal head (7) is installed at the right end of the rotating screw (6), the sliding rod (8) is slidably installed on the left side of the mounting groove (4) and is movably connected to the left end of the rotating screw (6), a group of grooves (9) is opened on both sides of the rod body (2) and is connected to the mounting groove (4), a plurality of groups of hinged seats (10) are movably installed in the group of grooves (9), and a group of expansion blocks (11) is installed at the front ends of the plurality of groups of hinged seats (10).

2. A mining-use threaded steel anchor without longitudinal ribs according to claim 1, characterized in that: A group of expansion blocks (11) are respectively provided with a plurality of position limiting holes (12) and strip holes (13) which are staggered.

3. A mining-use threaded steel anchor without longitudinal ribs according to claim 1, characterized in that: One end of each of the plurality of articulated seats (10) is hinged in a corresponding groove (9) via a pin shaft (14), and the other end is slidably mounted in a corresponding strip hole (13) via a slider (15).

4. A mining-use threaded steel anchor without longitudinal ribs according to claim 1, characterized in that: The two sides of the sliding rod (8) are movably hinged to a plurality of sets of hinge seats (10) via a plurality of sets of connecting rods (16), and a detachable sealing cover (17) is threadedly mounted on the right end of the anchor rod (1).

5. The mining-use threaded steel anchor rod without longitudinal ribs according to claim 1, characterized in that: The outer surface of the rod body (2) is tapped with threads arranged in an equidistant and unidirectional left-handed pattern, and the outer surface of the connecting portion (3) is tapped with threads arranged in an equidistant and unidirectional right-handed pattern.

6. The mining-use threaded steel anchor rod without longitudinal ribs according to claim 1, characterized in that: A spherical washer (18) is sleeved on the outside of the connecting portion (3), an anchor plate (19) is connected to the right side of the spherical washer (18), a nut (20) is threadedly connected to the right end of the connecting portion (3), and a friction washer (21) is installed between the spherical washer (18) and the nut (20).

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