Active expansion type pipe seam anchor rod

Abstract

The utility model discloses an active expansion type pipe seam anchor rod which comprises an anchor rod body, a rotating head is arranged on one side of the anchor rod body, a two-way threaded rod extending to the side, away from the rotating head, of the anchor rod body is arranged in the middle of the interior of the anchor rod body, and a locking assembly is arranged on the side, away from the rotating head, of the anchor rod body. Internal thread sleeve blocks matched with the two-way threaded rod are symmetrically arranged on the two sides of the two-way threaded rod in a threaded mode, first through grooves are formed in the inner top and the inner bottom of the anchor rod, expansion rods are arranged in the two first through grooves, and mounting blocks are arranged in the middles of the two ends of the two expansion rods; the tops and the bottoms of the two sets of mounting blocks at the same end are jointly connected with limiting springs. Through mutual cooperation of the bidirectional threaded rod, the internal threaded sleeve block, the first through groove, the insertion rod, the expansion rod, the mounting block and the limiting spring, the automatic expansion performance of the anchor rod can be achieved, the later insertion firmness of the anchor rod is improved conveniently, and the anchoring performance of the anchor rod in the later use process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rods, in particular to an active expansion type pipe seam anchor rod. Background Art

[0002] The pipe seam anchor is a friction-type full-length anchoring prestressed anchor with the advantages of simple structure, easy installation, low price, and rapid load-bearing. Since its introduction, the anchor has been widely used in the field of underground engineering support, especially in the support and reinforcement of soft rock shafts and tunnels. The anchoring principle is to radially compress the rod body with the pipe seam through external force so that the diameter of its front end is slightly smaller than the borehole diameter, and then drive it into the borehole. Under the constraint of the hole wall, the rod body produces radial extrusion pressure on the surrounding rock and generates axial friction force between the rod body and the hole wall. With the support of the supporting device at the rear end of the anchor, the surrounding rock is reinforced and stabilized.

[0003] The internal structure of existing anchor rods is relatively simple, and most of them are equipped with expansion mechanisms, which weaken the anchoring and pull-out resistance of the anchor rods, thereby reducing the bearing capacity of the anchor rods in the later use and affecting the safety of their use. At the same time, most of the anchor rods are not equipped with a locking function. In the later stage, the internal structure of the anchor rod will loosen due to the vibration of the rock itself, thereby affecting the later anchoring ability. Utility Model Content

[0004] The utility model aims to provide an active expansion type pipe seam anchor rod, which is convenient for providing the anchoring property and autonomous expansion ability of the anchor rod, and improves the self-locking performance of the internal structure of the anchor rod in the later stage.

[0005] To achieve the above-mentioned purpose, an active expansion pipe seam anchor is provided, including an anchor, a swivel is provided on one side of the anchor, a bidirectional threaded rod extending to the side of the anchor away from the swivel is provided at the middle position inside the anchor, a locking assembly is provided on the side of the anchor away from the swivel, and the threads on both sides of the bidirectional threaded rod are symmetrically provided with internal threaded sleeves that cooperate with each other, a through groove is provided on the inner top and inner bottom of the anchor, expansion rods are provided inside two groups of through grooves, mounting blocks are provided at the middle positions at both ends of the two groups of expansion rods, the tops and bottoms of the two groups of mounting blocks at the same end are connected with limiting springs together, and plug rods are evenly provided on the top of one group of expansion rods and the bottom of the other group of expansion rods, so as to realize the autonomous expansion function of the anchor and improve the stability of later expansion.

[0006] According to the active expansion pipe seam anchor rod, the locking assembly includes a pulling block, a fixing rod, a fixing groove, an installation groove, a spring and a through groove II. The fixing grooves are provided with a plurality of groups, and the plurality of fixing grooves are evenly opened at the edge of the outer side of the bidirectional threaded rod. The installation groove begins in the inner wall of the top of the anchor rod away from the rotating head. The side of the installation groove away from the rotating head is provided with a through groove II connected to the outside of the anchor rod. The inner bottom of the installation groove is provided with a fixing rod extending into the inside of the fixing groove, and the fixing rod and the fixing groove are engaged with each other. The inner top of the installation groove is provided with a spring connected to the fixing rod. The top of the fixing rod close to the through groove II is provided with a pulling block, and the pulling block extends to the inside of the through groove II and cooperates with it, so as to realize the locking work of the bidirectional threaded rod and improve the stability of expansion.

[0007] According to the active expansion type pipe seam anchor, the adjacent sides of the two groups of internal threaded sleeves and the two sides of the two groups of expansion rods are provided with guide bevels, and the two groups of guide bevels cooperate with each other to facilitate the expansion work of pushing the expansion rods to move through the guide bevels when the internal threaded sleeves move.

[0008] According to the active expansion type pipe seam anchor, telescopic rods are provided at the top and bottom of both sides inside the anchor, and two groups of telescopic rods and two groups of internal threaded sleeves on the same side are interconnected to facilitate the limited movement of the internal threaded sleeves.

[0009] According to the active expansion type pipe seam anchor, the exterior of the spring is sprayed with an anti-rust coating to prevent rust from affecting the subsequent use effect.

[0010] The above scheme has the beneficial effects that the automatic expansion performance of the anchor rod can be realized through the mutual cooperation of the bidirectional threaded rod, the internal threaded sleeve block, the through slot one, the insertion rod, the expansion rod, the installation block and the limit spring, which is convenient for improving the firmness of the anchor rod in the later insertion and ensuring the anchoring performance of the anchor rod in the later use;

[0011] At the same time, through the mutual cooperation of the pulling block, the fixing rod, the fixing groove, the installation groove, the spring and the through groove 2, the later self-locking performance of the anchor rod can be achieved, and the loosening of the bidirectional threaded rod caused by rock vibration can be reduced, so as to further improve the anchoring performance of the anchor rod.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 It is a three-dimensional structural schematic diagram of an active expansion type pipe seam anchor expansion rod of the utility model;

[0015] Figure 2 This is a front cross-sectional view of an active expansion type pipe seam anchor rod of the utility model;

[0016] Figure 3 It is a side cross-sectional view of an active expansion type pipe seam anchor rod of the utility model;

[0017] Figure 4 This utility model is an active expansion type pipe seam anchor Figure 2 Enlarged view of point A.

[0018] Legend:

[0019] 1. Anchor rod; 2. Internal thread sleeve block; 3. Through slot one; 4. Turntable; 5. Insert rod; 6. Expansion rod; 7. Bidirectional threaded rod; 8. Pull block; 9. Fixed rod; 10. Fixed slot; 11. Mounting slot; 12. Spring; 13. Through slot two; 14. Limit spring; 15. Mounting block. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-4 The utility model embodiment is an active expansion type pipe seam anchor, which includes an anchor 1, a swivel 4 is provided on one side of the anchor 1, a bidirectional threaded rod 7 extending to the side of the anchor 1 away from the swivel 4 is provided at the middle position inside the anchor 1, and a locking assembly is provided on the side of the anchor 1 away from the swivel 4. The threads on both sides of the bidirectional threaded rod 7 are symmetrically provided with internal threaded sleeves 2 that cooperate with each other. A through groove 3 is provided on the inner top and bottom of the anchor 1, and expansion rods 6 are provided inside the two groups of through grooves 3. Mounting blocks 15 are provided at the middle positions of both ends of the two groups of expansion rods 6. The tops and bottoms of the two groups of mounting blocks 15 at the same end are connected to the limiting spring 14 together, and the top of one group of expansion rods 6 and the bottom of the other group of expansion rods 6 are evenly provided with plug rods 5.

[0022] The locking assembly includes a pull block 8, a fixing rod 9, a fixing groove 10, an installation groove 11, a spring 12 and a through groove 2 13. The fixing groove 10 is provided with a plurality of groups, and the plurality of fixing grooves 10 are evenly opened at the edge of the outer side of the bidirectional threaded rod 7. The installation groove 11 is initially located in the inner wall at the top of the anchor rod 1 away from the swivel head 4. The side of the installation groove 11 away from the swivel head 4 is provided with a through groove 2 13 connected to the outside of the anchor rod 1. The inner bottom of the installation groove 11 is provided with a fixing rod 9 extending into the inside of the fixing groove 10, and the fixing rod 9 and the fixing groove 10 are engaged with each other. The inner top of the installation groove 11 is provided with a spring 12 connected to the fixing rod 9. The top of the fixing rod 9 close to the through groove 2 13 is provided with a pull block 8, and the pull block 8 extends to the inside of the through groove 2 13 and cooperates with it.

[0023] The adjacent sides of the two sets of internal threaded sleeves 2 and the two sides of the two sets of expansion rods 6 are both provided with guiding inclined surfaces, and the two sets of guiding inclined surfaces cooperate with each other.

[0024] Telescopic rods are provided at the top and bottom of both sides of the anchor rod 1, and two groups of telescopic rods on the same side are connected to two groups of internal threaded sleeve blocks 2.

[0025] The outside of the spring 12 is sprayed with a rust-proof coating.

[0026] Working principle: When in use, the anchor rod 1 and the above components can be directly taken to drive the rotating head 4 to be inserted into the through hole opened inside the rock. After the insertion is completed, the pull block 8 can be pulled through the through groove 13 to drive the fixing rod 9 to be disengaged from the inside of the fixing groove 10, so that the fixing rod 9 moves inside the installation groove 11 to achieve the compression operation of the spring 12. At this time, the locking of the two-way threaded rod 7 can be released by the movement of the fixing rod 9, so that the operator can easily realize the rotation of the two-way threaded rod 7. The locking of this component can effectively prevent the two-way threaded rod 7 from loosening due to rock vibration in the later stage, so as to further improve the later expansion performance and anchoring performance;

[0027] By unlocking the two-way threaded rod 7, the two-way threaded rod 7 can be directly rotated to drive the two groups of internal threaded sleeves 2 to move closer to each other outside thereof, and then through the guide bevel design on the side of the two groups of internal threaded sleeves 2 approaching each other outside and the guide bevel design on both sides of the two groups of expansion rods 6, the internal threaded sleeves 2 can push the two groups of expansion rods 6 to move away from each other inside the anchor rod 1 through the guide bevels during the movement, so that the expansion rod 6 can push the insertion rod 5 inside the through groove 1 3 to be inserted into the rock wall outside the anchor rod 1, so as to further improve the firmness of the later insertion of the anchor rod 1, thereby realizing the automatic expansion performance of the anchor rod.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An active expansion type pipe seam anchor, comprising: An anchor rod (1) is characterized in that a swivel (4) is provided on one side of the anchor rod (1), a bidirectional threaded rod (7) extending to the side of the anchor rod (1) away from the swivel (4) is provided at the middle position inside the anchor rod (1), a locking assembly is provided on the side of the anchor rod (1) away from the swivel (4), the threads on both sides of the bidirectional threaded rod (7) are symmetrically provided with internal threaded sleeves (2) that cooperate with each other, a through groove (3) is provided on the inner top and inner bottom of the anchor rod (1), expansion rods (6) are provided inside the two groups of through grooves (3), mounting blocks (15) are provided at the middle positions at both ends of the two groups of expansion rods (6), the tops and bottoms of the two groups of mounting blocks (15) at the same end are commonly connected to a limiting spring (14), and the top of one group of expansion rods (6) and the bottom of the other group of expansion rods (6) are evenly provided with insertion rods (5).

2. The active expansion type pipe seam anchor according to claim 1, characterized in that: The locking assembly comprises a pull block (8), a fixing rod (9), a fixing groove (10), an installation groove (11), a spring (12) and a second through groove (13). The fixing groove (10) is provided in a plurality of groups. The plurality of fixing grooves (10) are evenly arranged at the outer edge of the bidirectional threaded rod (7). The installation groove (11) is initially arranged in the inner wall of the top of the anchor rod (1) away from the rotating head (4). The installation groove (11) is provided on the side away from the rotating head (4) with a spring that is aligned with the anchor rod (1). ) is connected to the outside of the second through slot (13), the inner bottom of the installation slot (11) is provided with a fixing rod (9) extending into the inside of the fixing slot (10), and the fixing rod (9) and the fixing slot (10) are mutually engaged, the inner top of the installation slot (11) is provided with a spring (12) connected to the fixing rod (9), and the top of the fixing rod (9) close to the second through slot (13) is provided with a pull block (8), and the pull block (8) extends into the inside of the second through slot (13) and cooperates with it.

3. The active expansion type pipe seam anchor according to claim 1, characterized in that: The adjacent sides of the two sets of internal thread sleeves (2) and the two sides of the two sets of expansion rods (6) are both provided with guiding inclined surfaces, and the two sets of guiding inclined surfaces cooperate with each other.

4. The active expansion type pipe seam anchor according to claim 1, characterized in that: Telescopic rods are provided at the top and bottom of both sides of the anchor rod (1), and two groups of telescopic rods on the same side are connected to two groups of internal threaded sleeve blocks (2).

5. The active expansion type pipe seam anchor according to claim 2, characterized in that: The outside of the spring (12) is sprayed with an anti-rust coating.

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