Mining anchorage device

Abstract

The utility model discloses a mining anchorage device which is characterized in that the top of an anchor backing plate is in threaded connection with a prestressed tendon clamping piece fixing mechanism, a rotating disc is provided with a through groove, a clamping piece is arranged corresponding to a prestressed tendon insertion hole, and a movable clamping piece transversely slides on the peripheral side of a prestressed tendon. Due to the arrangement of the clamping pieces, when the prestressed tendon clamping piece fixing mechanism and an anchor backing plate are locked, the hole position connecting assembly is continuously close to the anchor backing plate, the bottom of the clamping piece combination of each clamping piece is partially inserted into a prestressed tendon insertion hole, and the inner side of the clamping piece combination of an annular structure is tightly attached to a prestressed tendon along with the insertion process; the outer side of the clamping piece is tightly attached to the interior of the prestressed tendon inserting hole, the clamping piece fastens the prestressed tendon generating prestress in the tensioning state at the position of the prestressed tendon inserting hole, the prestressed tendon clamping piece fixing mechanism replaces an external tool to conduct operation on a fastening device of each prestressed tendon at the position of the prestressed tendon inserting hole, and the installation process is faster and more efficient. And the practicability of the device is improved.

Description

Technical Field

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

[0002] Mining anchors are equipment used to support and stabilize rock formations in underground projects such as mines and tunnels. They are mainly composed of anchor rods, anchor cables, anchoring materials, etc. Through reasonable design and application of anchors, they can effectively improve the stability of the rock mass, prevent safety hazards such as rock sliding and collapse, improve the safety of mining operations, and ensure the safety of miners and the normal operation of equipment.

[0003] Existing mining anchors require additional tools to squeeze the fastening device into the prestressed tendons at the prestressed tendon insertion holes, which is not very practical. In addition, each prestressed tendon needs to be tightened one by one, which involves many steps and has low installation efficiency. Utility Model Content

[0004] The purpose of the present utility model is to provide a mining anchor to solve the problem that the above existing mining anchors proposed in the above background technology require additional tools to squeeze the fastening device into the prestressed tendons at the position of the prestressed tendon insertion hole, which is not practical, and each prestressed tendon needs to be tightened one by one, with many operating steps and low installation efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mining anchor, comprising an anchor plate, spiral reinforcement, a concrete pouring channel and prestressed reinforcement, wherein the spiral reinforcement is installed on the circumferential side of the bottom of the anchor plate, the bottom end of the anchor plate is connected to the concrete pouring channel, the surface of the anchor plate is provided with a concrete pouring hole and a prestressed reinforcement insertion hole, the prestressed reinforcement passes through the prestressed reinforcement insertion hole and extends to the concrete pouring channel, characterized in that: the top of the anchor plate is threadedly connected to a prestressed reinforcement clamp fixing mechanism, the prestressed reinforcement clamp fixing mechanism comprises a rotating disk and a hole connection assembly, the rotating disk is provided with a through slot, the hole connection assembly is rotatably connected to the through slot of the rotating disk, the hole connection assembly comprises a clamp, the clamp is arranged corresponding to the prestressed reinforcement insertion hole, the clamp comprises a movable clip, and the movable clip slides laterally around the circumference of the prestressed reinforcement.

[0006] Preferably, a convex edge is provided on the top of the anchor plate, an external thread is provided on the circumferential side of the convex edge, and an internal thread is provided on the bottom of the rotating disk through groove.

[0007] Preferably, the hole connection assembly also includes a rotating ring and a concrete pouring port connecting pipe, the rotating ring is an annular structure, the outer periphery of the rotating ring is rotatably connected to the inner periphery of the rotating disk, and the inner periphery of the rotating ring is connected to the concrete pouring port connecting pipe and multiple clamps.

[0008] Preferably, the prestressed tendon insertion holes are provided in multiple groups and correspond one-to-one with the clamps, and the concrete pouring holes correspond to the concrete pouring port connecting pipes.

[0009] Preferably, the clamp further comprises an outer frame and a positioning seat, and a plurality of combinations of the positioning seat and the movable clip are fixed on the outer frame, and the movable clip is connected to the positioning seat in a transverse sliding manner.

[0010] Preferably, the movable clip includes a clip, a movable frame, a limiting plate and a spring. The movable frame is located at the slot hole on the vertical surface of the positioning seat. One end of the movable frame is connected to the limiting plate inside the slot hole of the positioning seat, and the other end is connected to the clip outside the positioning seat. A spring is fixed between the limiting plate and the inside of the slot hole of the positioning seat.

[0011] Preferably, the inner diameter of the multiple groups of clip combinations matches the outer diameter of the prestressed tendon, the outer diameter of the bottom of the multiple groups of clip combinations decreases from top to bottom, and this part matches the inner diameter of the prestressed tendon insertion hole, and the outer diameter of the bottom of the concrete pouring hole decreases from top to bottom, and this part matches the inner diameter of the concrete pouring hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model provides a clamp. When the prestressed tendon clamp fixing mechanism is locked with the anchor plate, the hole connection assembly is continuously approaching the anchor plate, and the bottom part of the clip combination of each clamp is inserted into the prestressed tendon insertion hole. As the insertion process progresses, the inner side of the annular structure of the clip combination is in close contact with the prestressed tendon, and the outer side is in close contact with the inside of the prestressed tendon insertion hole. The clamp completes the fastening of the prestressed tendon generating prestress in the tensioned state at the position of the prestressed tendon insertion hole. The prestressed tendon clamp fixing mechanism replaces the operation of using external tools to fasten the device for each prestressed tendon at the position of the prestressed tendon insertion hole. The installation process is faster and more efficient, thereby improving the practicality of the device.

[0014] 2. The present invention sets a prestressed tendon clamp fixing mechanism. During the locking process of the prestressed tendon clamp fixing mechanism, compared with the existing operation of tightening each prestressed tendon individually, each clamp here can tighten all prestressed tendons at the same time, so that the device can be evenly stressed, the operation steps are reduced, and the installation efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the mining anchor structure of the present utility model.

[0016] Figure 2 This is a schematic diagram of the position of the prestressed tendon clamp fixing mechanism of the present utility model.

[0017] Figure 3 This is a schematic diagram of the anchor plate structure of the present utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the prestressed tendon clamp fixing mechanism of the present utility model.

[0019] Figure 5 This is a schematic diagram of the hole connection component structure of the utility model.

[0020] Figure 6 This is a structural diagram of the clamps of the present invention in a combined state.

[0021] Figure 7 This is a structural diagram of the clamp of the present invention in an open state.

[0022] Figure 8 This is a schematic diagram of the movable clip structure of the utility model.

[0023] In the figure: 1. Anchor plate; 11. Raised edge; 111. External thread; 12. Prestressed tendon insertion hole; 13. Concrete pouring hole; 2. Spiral tendon; 3. Concrete pouring channel; 4. Prestressed tendon; 5. Prestressed tendon clamp fixing mechanism; 51. Rotating disk; 511. Internal thread; 512. Handle; 52. Hole connection assembly; 521. Rotating ring; 522. Clamp; 5221. Outer frame; 5222. Positioning seat; 5223. Movable clip; 52231. Clip; 52232. Moving frame; 52233. Limiting piece; 52234. Spring; 523. Concrete pouring port connecting pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] An embodiment provided by the present invention: Figure 1 As shown, a mining anchor includes an anchor plate 1, spiral reinforcement 2, a concrete pouring channel 3, prestressed reinforcement 4 and a prestressed reinforcement clamp fixing mechanism 5.

[0026] like Figure 1 and Figure 2 As shown, spiral reinforcement 2 is installed around the bottom of the anchor plate 1. The bottom end of the anchor plate 1 is connected to the concrete pouring channel 3. The surface of the anchor plate 1 is provided with concrete pouring holes 13 and prestressed tendon insertion holes 12. The prestressed tendons 4 pass through the prestressed tendon insertion holes 12 and extend to the concrete pouring channel 3. Before pouring concrete during the installation of the anchor, the prestressed tendons 4 need to be tightened and tightened at the prestressed tendon insertion holes 12.

[0027] like Figure 3 and Figure 4 As shown, the top of the anchor plate 1 is threadedly connected to a prestressed tendon clamp fixing mechanism 5. The prestressed tendon clamp fixing mechanism 5 includes a rotating disk 51 and a hole connection assembly 52. The rotating disk 51 has a through slot. The top of the anchor plate 1 is provided with a flange 11, and the circumference of the flange 11 is provided with an external thread 111. The bottom of the through slot of the rotating disk 51 is provided with an internal thread 511. A handle 512 is installed on the circumference of the rotating disk 51. The staff member holds the handle 512 and rotates the rotating disk 51, so that the prestressed tendon clamp fixing mechanism 5 and the anchor plate 1 are locked.

[0028] like Figure 3 and Figure 4 As shown, the hole connection assembly 52 is rotatably connected to the through slot of the rotating disk 51. The hole connection assembly 52 includes a rotating ring 521, a clamp 522, and a concrete pouring port connecting insert 523. The rotating ring 521 is an annular structure. The outer periphery of the rotating ring 521 is rotatably connected to the inner periphery of the rotating disk 51. The inner periphery of the rotating ring 521 is connected to the concrete pouring port connecting insert 523 and multiple clamps 522. The rotating disk 51 and the hole connection assembly 52 are in a state of relative rotation. When the prestressed tendon clamp fixing mechanism 5 is locked with the anchor plate 1, the hole connection assembly 52 does not rotate with it due to the limiting effect of the prestressed tendon 4, and the distance between the concrete pouring port connecting insert 523 and multiple clamps 522 of the hole connection assembly 52 and the anchor plate 1 gradually decreases.

[0029] like Figure 5 、 Figure 6 and Figure 7 As shown, the clamp 522 includes an outer frame 5221, a positioning seat 5222, and a movable clip 5223. The positioning seat 5222 and the movable clip 5223 are fixed to the outer frame 5221 in multiple groups. The movable clip 5223 is laterally slidably connected to the positioning seat 5222. At the same time, the movable clip 5223 is distributed on the four sides of the prestressed tendon. The movable clip 5223 includes a clip 52231, a movable frame 52232, a limiting piece 52233, and a spring 52234. The movable frame 52232 is located in the slot on the vertical surface of the positioning seat 5222. One end of the movable frame 52232 is connected to the limiting piece 52233 inside the slot of the positioning seat 5222, and the other end is connected to the clip 52231 outside the positioning seat 5222. A spring 52234 is fixed between the limiting piece 52233 and the slot inside the positioning seat 5222. In the clamp 522, when the movable clips 5223 are not squeezed, the movable clips 5223 are close to the positioning seat 5222, so that the gaps between the multiple groups of movable clips 5223 are larger; when the outer sides of the multiple groups of clips 52231 are squeezed, the springs 52234 are compressed, and the clips 52231 are all close to the middle and assembled into a complete ring structure.

[0030] like Figure 2 As shown, the prestressed tendon insertion holes 12 on the surface of the anchor plate 1 are provided with multiple groups and correspond one to one with the clamps 522, wherein the inner diameter of the combination of multiple groups of clips 52231 of each clamp 522 coincides with the outer diameter of the prestressed tendon 4, and the outer diameter of the bottom of the combination of multiple groups of clips 52231 decreases from top to bottom, and this part matches the inner diameter of the prestressed tendon insertion hole 12; the concrete pouring hole 13 on the surface of the anchor plate 1 corresponds to the concrete pouring port connecting pipe 523, and the outer diameter of the bottom of the concrete pouring hole 13 decreases from top to bottom, and this part matches the inner diameter of the concrete pouring hole 13. As the hole connection assembly 52 continuously approaches the anchor plate 1, the bottom portion of the clip 52231 assembly of each clamp 522 is correspondingly inserted into the prestressed tendon insertion hole 12, and the concrete pouring port connecting insert 523 is inserted into the concrete pouring hole 13. As the insertion process progresses, under the restraining effect of the prestressed tendon insertion hole 12, the clip 52231 assembly moves toward the center and merges. The inner side of the annular clip 52231 assembly is in close contact with the prestressed tendon 4, and the outer side is in close contact with the interior of the prestressed tendon insertion hole 12. The outer side of the bottom of the concrete pouring port connecting insert 523 is in close contact with the interior of the concrete pouring hole 13. The concrete pouring port connecting insert 523 is connected to the concrete pouring hole 13 to facilitate the injection of concrete. The clamp 522 secures the prestressed tendons 4, which are prestressed under tension, to the tendon insertion holes 12, keeping the tendons 4 in the anchor in a tensioned state. This increases the anchor's firmness in the mine rock formation, improves the anchor's safety and stability during construction, and allows the anchor to withstand vertical and horizontal loads, effectively preventing the displacement and collapse of the rock formation. At the same time, the clip 52231 also blocks the tendon insertion holes 12 to prevent leakage during the next step of pouring concrete. The tendon clamp fixing mechanism 5 replaces the need to use external tools to secure each tendon 4 to the tendon insertion hole 12, making the installation process faster and more efficient, and improving the practicality of the device. During the locking process of the tendon clamp fixing mechanism 5, compared to the existing process of securing each tendon 4 individually, each clamp 522 here can secure all tendons 4 simultaneously, allowing the device to be evenly stressed, reducing the number of steps required, and increasing installation efficiency.

[0031] The above are only embodiments of the present invention, and common knowledge such as the specific structures and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A mining anchor, comprising an anchor plate (1), a spiral rib (2), a concrete pouring channel (3) and a prestressed rib (4), wherein the spiral rib (2) is installed on the circumferential side of the bottom of the anchor plate (1), the bottom end of the anchor plate (1) is connected to the concrete pouring channel (3), the surface of the anchor plate (1) is provided with a concrete pouring hole (13) and a prestressed rib insertion hole (12), the prestressed rib (4) passes through the interior of the prestressed rib insertion hole (12) and extends to the concrete pouring channel (3), characterized in that: The top of the anchor plate (1) is threadedly connected to a prestressed tendon clamp fixing mechanism (5), the prestressed tendon clamp fixing mechanism (5) comprising a rotating disk (51) and a hole connection assembly (52), the rotating disk (51) being provided with a through slot, the hole connection assembly (52) being rotatably connected to the through slot of the rotating disk (51), the hole connection assembly (52) comprising a clamp (522), the clamp (522) being arranged corresponding to the prestressed tendon insertion hole (12), the clamp (522) comprising a movable clip (5223), the movable clip (5223) sliding transversely around the prestressed tendon (4).

2. A mining anchor according to claim 1, characterized in that: The top of the anchor plate (1) is provided with a convex edge (11), the peripheral side of the convex edge (11) is provided with an external thread (111), and the bottom of the through groove of the rotating disk (51) is provided with an internal thread (511).

3. A mining anchor according to claim 1, characterized in that: The hole connection assembly (52) further comprises a rotating ring (521) and a concrete pouring port connecting insert (523); the rotating ring (521) is an annular structure; the outer periphery of the rotating ring (521) is rotatably connected to the inner periphery of the rotating disk (51); and the inner periphery of the rotating ring (521) is connected to the concrete pouring port connecting insert (523) and a plurality of clamps (522).

4. A mining anchor according to claim 3, characterized in that: The prestressed tendon insertion holes (12) are provided in multiple groups and correspond one-to-one with the clamps (522), and the concrete pouring holes (13) correspond to the concrete pouring port connecting inserts (523).

5. A mining anchor according to claim 3, characterized in that: The clamp (522) further comprises an outer frame (5221) and a positioning seat (5222), wherein a plurality of combinations of the positioning seat (5222) and the movable clamp (5223) are fixed on the outer frame (5221), and the movable clamp (5223) is connected to the positioning seat (5222) in a transverse sliding manner.

6. A mining anchor according to claim 5, characterized in that: The movable clip (5223) includes a clip (52231), a movable frame (52232), a limiting piece (52233) and a spring (52234). The movable frame (52232) is located at the slot hole on the vertical surface of the positioning seat (5222). One end of the movable frame (52232) is connected to the limiting piece (52233) inside the slot hole of the positioning seat (5222), and the other end is connected to the clip (52231) outside the positioning seat (5222). A spring (52234) is fixed between the limiting piece (52233) and the inside of the slot hole of the positioning seat (5222).

7. A mining anchor according to claim 6, characterized in that: The inner diameter of the combination of the multiple sets of clips (52231) matches the outer diameter of the prestressed tendon (4); the outer diameter of the bottom of the combination of the multiple sets of clips (52231) decreases from top to bottom, and this part matches the inner diameter of the prestressed tendon insertion hole (12); the outer diameter of the bottom of the concrete pouring hole (13) decreases from top to bottom, and this part matches the inner diameter of the concrete pouring hole (13).

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