Mining cross anchor rod

Abstract

The utility model provides a mining cross-shaped anchor rod, which relates to the technical field of cross-shaped anchor rods, and comprises an anchor rod body and a cross-shaped structure, the outer wall of the anchor rod body is provided with a disc, one side of the disc close to the cross-shaped structure is fixedly provided with a stop-grouting plug, the outer wall of the anchor rod body is provided with a pre-tightening nut, and the pre-tightening nut is fixedly connected with the cross-shaped structure. A rotating handle is fixedly installed at the top of the pre-tightening nut, an anti-skid sleeve is fixedly installed on the outer wall of the rotating handle, and anti-skid grooves are evenly formed in the outer wall of the anti-skid sleeve. According to the anti-slip anchor rod, the rotating handle, the anti-slip sleeve and the anti-slip groove are arranged, the rotating handle is rotated to drive the pre-tightening nut to rotate on the outer wall of the anchor rod body, the disc and the stop-grouting plug can be fixed after the pre-tightening nut rotates by a certain number of turns, and when the rotating handle is rotated, the anti-slip effect when the rotating handle is rotated can be improved through matched use of the anti-slip sleeve and the anti-slip groove; and therefore, a tool is effectively prevented from being used when the pre-tightening nut is rotated in a humid environment, and the rotation efficiency of the pre-tightening nut is improved.

Description

Technical Field

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

[0002] The cross flower anchor for mining is a common geological engineering support material, which is usually used in underground projects such as coal mines. Its main function is to fix and support engineering structures such as underground tunnels, tunnels or caves to prevent rock collapse and geological disasters. Publication No. CN216588674U discloses a cross flower anchor for mining, including a pre-tightening nut, a tray, a grout stopper, a cross flower structure, and a high-strength left-handed threaded steel anchor. The grout stopper and the tray are sequentially installed on the outer end of the high-strength left-handed threaded steel anchor rod body and fixed by the pre-tightening nut; the cross flower structure is installed on the rod body of the high-strength left-handed threaded steel anchor. The cross flower structure can move freely in the extension direction of the high-strength left-handed threaded steel anchor, and the distance between the two cross flower structures can be adjusted as needed. In this utility model, by changing the distance between the two cross flower structures on the anchor rod body, the bonding strength between the anchor rod and the anchoring agent is adjusted, so that the support resistance can be increased exponentially, adapting to various surrounding rock conditions in the mine, with a wide range of applications and stronger reliability. However, the pre-tightening nut on the cross anchor rod is not provided with an anti-slip structure, so that tools need to be used when rotating in a wet environment, which is troublesome to operate and reduces the rotation efficiency of the pre-tightening nut. The cross anchor rod still has shortcomings and needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a cross anchor for mining, comprising an anchor body and a cross structure, a disc is installed on the outer wall of the anchor body, a slurry stopper is fixedly installed on the side of the disc close to the cross structure, a pre-tightening nut is installed on the outer wall of the anchor body, a turning handle is fixedly installed on the top of the pre-tightening nut, an anti-skid sleeve is fixedly installed on the outer wall of the turning handle, and anti-skid grooves are evenly opened on the outer wall of the anti-skid sleeve.

[0005] Preferably, the pre-tightening nut is threadedly connected to the anchor body, thereby improving the fixing effect of the pre-tightening nut through the threaded connection.

[0006] Preferably, the disc is slidably connected to the anchor body, and the stop plug is slidably connected to the anchor body. Here, the adjustment effect of the disc and the stop plug is improved by the sliding connection.

[0007] Preferably, the number of the cross flower structures is two groups, and the two groups of cross flower structures are threadedly connected to the anchor body. Here, the adjustment effect of the cross flower structure is improved by the threaded connection.

[0008] Preferably, the anti-slip cover is made of rubber material. Here, the use effect of the anti-slip cover is improved by the rubber material.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] The utility model discloses that by providing a turning handle, an anti-skid sleeve and an anti-skid groove, the turning handle can be turned to drive the pre-tightening nut to rotate on the outer wall of the anchor rod body. After a certain number of turns, the disc and the slurry stop plug can be fixed. When the turning handle is turned, the anti-skid sleeve and the anti-skid groove can be used in combination to improve the anti-skid effect when turning the turning handle, thereby effectively avoiding the need to use tools when turning the pre-tightening nut in a humid environment, thereby improving the rotation efficiency of the pre-tightening nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model provides a schematic diagram of the overall structure of a cross anchor for mining;

[0012] Figure 2 A side view of a cross anchor for mining is provided for the utility model;

[0013] Figure 3 The utility model proposes a cross anchor for mining Figure 2 Enlarged view of point A in the middle.

[0014] Legend:

[0015] 1. Anchor rod body; 2. Cross structure; 3. Disc; 4. Stop plug; 5. Pre-tightening nut; 6. Turning handle; 7. Anti-slip sleeve; 8. Anti-slip groove. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0018] Embodiment 1

[0019] See also Figure 1-3The utility model provides a technical solution: a cross anchor for mining, comprising an anchor body 1 and a cross structure 2, a disc 3 is installed on the outer wall of the anchor body 1, a grout stopper 4 is fixedly installed on the side of the disc 3 close to the cross structure 2, a pre-tightening nut 5 is installed on the outer wall of the anchor body 1, a turning handle 6 is fixedly installed on the top of the pre-tightening nut 5, an anti-skid sleeve 7 is fixedly installed on the outer wall of the turning handle 6, and anti-skid grooves 8 are evenly opened on the outer wall of the anti-skid sleeve 7. By setting the turning handle 6, the anti-skid sleeve 7 and the anti-skid groove 8, the turning handle 6 is rotated to drive the pre-tightening nut 5 to rotate on the outer wall of the anchor body 1, and the disc 3 and the grout stopper 4 can be fixed after a certain number of rotations. When the turning handle 6 is rotated, the anti-skid sleeve 7 and the anti-skid groove 8 can be used in combination to improve the anti-skid effect of rotating the turning handle 6, thereby effectively avoiding the need to use tools when rotating the pre-tightening nut 5 in a humid environment, thereby improving the rotation efficiency of the pre-tightening nut 5.

[0020] See also Figure 1-3 The pre-tightening nut 5 is threadedly connected to the anchor body 1, and the fixing effect of the pre-tightening nut 5 is improved by the threaded connection. The disc 3 is slidingly connected to the anchor body 1, and the grouting stop plug 4 is slidingly connected to the anchor body 1. The adjustment effect of the disc 3 and the grouting stop plug 4 is improved by the sliding connection. There are two groups of cross flower structures 2, and the two groups of cross flower structures 2 are threadedly connected to the anchor body 1. The adjustment effect of the cross flower structure 2 is improved by the threaded connection. The anti-slip sleeve 7 is made of rubber material, and the use effect of the anti-slip sleeve 7 is improved by the rubber material.

[0021] Working principle: When in use, first select a drill bit that is suitable for the diameter of the cross structure 2 to drill a hole, the drilling depth is the length of the anchor body 1, and then send the anchoring agent into the drilled hole. Figure 1 As shown, the various components are assembled and sent to the borehole. In the process of pushing the anchor body 1 into the borehole, the inner end of the anchor body 1 pushes the resin roll or the fast-hardening cement roll to the inner end of the borehole. At this time, the anchor body 1 is rotated so that the inner end of the anchor body 1 pierces the resin roll or the fast-hardening cement roll. After that, the resin anchoring material or the fast-hardening cement material in the roll flows out from the roll and flows along the gaps between the cross structures 2, and finally fills the borehole. After being filled, the disc 3 and the grout stop plug 4 are pushed to slide on the outer wall of the anchor body 1. After sliding a certain distance, the grout stop plug 4 will block the borehole. After blocking for a certain period of time, the anchor agent in the borehole will solidify. After solidification, the handle 6 is turned again to drive the pre-tightening nut 5 to rotate on the outer wall of the anchor body 1 through the handle 6. After a certain number of rotations, the disc 3 and the grout stop plug 4 can be fixed. When turning the handle 6, the anti-skid sleeve 7 and the anti-skid groove 8 can be used in combination to improve the anti-skid effect when turning the handle 6, thereby effectively avoiding the need to use tools when turning the pre-tightening nut 5 in a humid environment, thereby improving the rotation efficiency of the pre-tightening nut 5.

[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A cross anchor for mining, comprising an anchor body (1) and a cross structure (2), characterized in that: A disc (3) is installed on the outer wall of the anchor rod body (1), a slurry stopper (4) is fixedly installed on the side of the disc (3) close to the cross structure (2), a pre-tightening nut (5) is installed on the outer wall of the anchor rod body (1), a turning handle (6) is fixedly installed on the top of the pre-tightening nut (5), an anti-skid sleeve (7) is fixedly installed on the outer wall of the turning handle (6), and anti-skid grooves (8) are evenly arranged on the outer wall of the anti-skid sleeve (7).

2. The cross anchor for mining according to claim 1, characterized in that: The pre-tightening nut (5) is threadedly connected to the anchor rod body (1).

3. The cross anchor for mining according to claim 1, characterized in that: The disc (3) is slidably connected to the anchor rod body (1), and the slurry stopper (4) is slidably connected to the anchor rod body (1).

4. The cross anchor for mining according to claim 1, characterized in that: The number of the cross flower structures (2) is two groups, and the two groups of cross flower structures (2) are threadedly connected to the anchor rod body (1).

5. The cross anchor for mining according to claim 1, characterized in that: The anti-slip cover (7) is made of rubber.

Images