Grouting anchor rod with double-locked tray

Abstract

The utility model relates to a grouting anchor rod with double locking of a tray, which belongs to the technical field of engineering structure supporting appliances and comprises a hollow rod body, external threads are arranged on the outer wall of the hollow rod body, and the hollow rod body is used for being inserted into an anchor hole in a rock mass; the anchor rod head is connected to one end of the hollow rod body and located in the anchor hole, a slurry flowing hole is formed in the anchor rod head, and the slurry flowing hole is communicated with an inner hole of the hollow rod body; the tray is provided with a center hole, the hollow rod body is connected to the center hole in a penetrating mode, and the tray is further provided with a mounting hole which is located at the position close to the edge of the tray; the nut is in threaded connection with the hollow rod body, the nut and the anchor rod head are located on the two sides of the tray respectively, and the nut is used for pressing the tray on the rock wall of the rock mass; the lock rod is connected in the mounting hole, a lock hole located on the side of the anchor hole is further formed in the rock mass, the lock rod is inserted into the lock hole and locked in the lock hole, and the lock rod tightly presses the tray. The tray of the grouting anchor rod of the structure is doubly pressed on the rock wall through the nut and the locking rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering structure support tools, and particularly relates to a grouting bolt with double locking of a tray. Background Art

[0002] At present, an anchor bolt support system mainly includes an anchor bolt body, a tray and a nut. Among them, the anchor bolt body is inserted into an anchor hole opened in a rock mass and fixed in the anchor hole by means of resin, slurry, expanding shell, etc. The tray is provided with a central hole, the anchor bolt body passes through the central hole of the tray, and the nut is screwed onto the anchor bolt body, and the nut is used to press the tray against the rock wall of the rock mass.

[0003] To ensure the support effect, the nut screwed on the anchor bolt body cannot be loosened. However, in the actual use process, affected by the environment, geology and use scenarios, the probability of the nut screwed on the anchor bolt body loosening is relatively high. In the prior art, the tray on the anchor bolt tightly relies on the nut to press. When the nut loosens, the tray pressed against the rock wall will also loosen, so that it cannot continue to press the rock wall, affecting the support effect. In severe cases, it may even lead to the failure of the anchor bolt support system, causing serious engineering accidents. Content of the Utility Model

[0004] The utility model provides a grouting bolt with double locking of a tray to solve the above technical problems proposed in the background art.

[0005] The utility model is realized by the following technical solutions: A grouting bolt with double locking of a tray includes:

[0006] A hollow rod body, the outer wall of which is provided with an external thread, and the hollow rod body is used to be inserted into an anchor hole in a rock mass;

[0007] An anchor bolt head, connected to one end of the hollow rod body and located in the anchor hole, and a slurry flow hole is arranged on the anchor bolt head, and the slurry flow hole is communicated with the inner hole of the hollow rod body;

[0008] A tray, provided with a central hole, the hollow rod body passes through the central hole, and the tray is also provided with a mounting hole, and the mounting hole is located at a position close to the edge of the tray;

[0009] A nut, screwed onto the hollow rod body, the nut and the anchor bolt head are respectively located on both sides of the tray, and the nut is used to press the tray against the rock wall of the rock mass;

[0010] A locking rod, connected in the mounting hole, and a locking hole is also opened in the rock mass on the side of the anchor hole, the locking rod is inserted into the locking hole and locked in the locking hole, and the locking rod presses the tray.

[0011] Furthermore, in order to better implement the present utility model, the locking rod includes:

[0012] The rod portion is composed of a connecting section and a locking section, wherein the connecting section and the locking section are coaxially arranged, wherein the connecting section is installed in the mounting hole, and the locking section is inserted and locked in the locking hole;

[0013] A pressing plate is fixedly arranged at the end of the connecting section. When the locking section is locked in the locking hole, the pressing plate is pressed on the tray.

[0014] Furthermore, in order to better implement the utility model, a plurality of mounting holes are opened on the tray, and the plurality of mounting holes are evenly distributed around the central hole;

[0015] A plurality of locking holes are opened on the rock wall, and a plurality of locking rods are provided. The plurality of locking rods are connected to the plurality of mounting holes and the plurality of locking rods in a one-to-one correspondence.

[0016] Further, in order to better implement the utility model, the connecting section is screwed into the mounting hole;

[0017] The rod portion is provided with a through hole penetrating the connecting section and the locking section, and the side wall of the locking section is also provided with a plurality of slurry outlets connected with the through hole;

[0018] The pressing plate is provided with a clamping hole, and the clamping hole is connected with the through hole to form a grouting hole;

[0019] It also includes a grout plug, which is clamped in the clamping hole when the grouting hole is not grouted.

[0020] Further, in order to better implement the utility model, the connecting section is screwed into the mounting hole;

[0021] The locking section is hollowed out to form a clearance hole, and the locking section is also provided with a plurality of deformation notches connected to the clearance holes, and the deformation notches penetrate the locking section along the axial direction;

[0022] The locking rod is also provided with a screw hole penetrating the connecting section and the pressing plate;

[0023] It also includes a stop bolt which is screwed into the screw hole and inserted into the clearance hole. The locking section is pressed against the inner wall of the locking hole by the stop bolt.

[0024] Furthermore, in order to better implement the present invention, a plurality of anti-slip stripes are provided on the outer wall of the locking section.

[0025] Further, to better implement the present utility model, both the locking section and the connecting section are solid structures. A number of elastic barbs are provided on the outer wall of the locking section. When the locking section is inserted into the lock hole, the elastic barbs are hooked onto the inner wall of the lock hole.

[0026] The present utility model has the following beneficial effects compared with the prior art:

[0027] The grouting bolt with double locking of the tray provided by the present utility model includes a hollow rod body, an anchor head, a tray, a nut, and a locking rod. The outer wall of the hollow rod body is provided with external threads. The hollow rod body is used to be inserted into an anchor hole on a rock mass. The anchor head is connected to one end of the hollow rod body and is located inside the anchor hole. A slurry flow hole is provided on the anchor head, and the slurry flow hole is communicated with the inner hole of the hollow rod body. The tray is provided with a central hole, and the hollow rod body passes through the central hole. The tray is also provided with an installation hole, and the installation hole is located near the edge of the tray. The nut is screwed onto the hollow rod body, and the nut and the anchor head are respectively located on both sides of the tray. And the nut is used to press the tray against the rock wall of the rock mass. The locking rod is connected in the installation hole. A lock hole is also provided on the rock mass and is located on the side of the anchor hole. The locking rod is inserted into the lock hole and locked in the lock hole, and the locking rod presses the tray.

[0028] During specific use, first, an anchor hole and a lock hole located on the side of the anchor hole are formed on the rock wall of the rock mass. Then, the hollow rod body is inserted into the anchor hole. Then, slurry is injected into the hollow rod body, and the slurry flows from the slurry flow hole on the anchor head into the gap between the wall of the anchor hole and the outer wall of the hollow rod body. After the slurry solidifies, the tray is sleeved on the hollow rod body. Then, a nut is installed on the hollow rod body. The nut is used to press the tray against the rock wall and make the installation hole on the tray face the lock hole on the rock wall. Then, the locking rod is passed through the installation hole and inserted into the lock hole. The locking rod inserted into the lock hole is locked in the lock hole, and the locking rod presses the tray, that is, the locking rod presses the tray against the cliff wall.

[0029] With the above structure, the grouting bolt provided by the present utility model not only presses the tray against the rock wall by means of the nut, but also presses the tray against the cliff wall through the locking rod. Compared with the grouting bolts in the prior art, the tray of the grouting bolt provided by the present utility model is pressed against the rock wall by double acting forces, so that the situation of the tray loosening during use can be better avoided, and the support effect can be ensured. Therefore, the use stability of this grouting bolt is higher. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of a grouting bolt with double locking of the tray provided by an embodiment of the present utility model;

[0032] Figure 2 It is a schematic structural diagram of the locking rod provided by Embodiment 2 of the present utility model;

[0033] Figure 3 is Figure 2 Another perspective view of the locking rod shown;

[0034] Figure 4 It is a schematic structural diagram of the locking rod provided by Embodiment 3 of the present utility model;

[0035] Figure 5 is Figure 3 Another perspective view of the locking rod shown;

[0036] Figure 6 It is a schematic structural diagram of the locking rod provided by Embodiment 4 of the present utility model.

[0037] In the figure:

[0038] 100 - Hollow rod body, 200 - Anchor head, 300 - Tray, 400 - Nut, 500 - Rod part, 510 - Connection section, 520 - Locking section, 600 - Pressure plate, 700 - Grout plug, 800 - Stop bolt, 900 - Anti - slip stripes, 1000 - Elastic barbs, 10 - Locking rod. Detailed implementation manners

[0039] To make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope protected by the present utility model.

[0040] Embodiment:

[0041] The grouting bolt with double locking of the tray provided by this embodiment is as Figure 1 shown, and it includes a hollow rod body 100, an anchor head 200, a tray 300, a nut 400 and a locking rod 10, wherein:

[0042] The outer wall of the hollow rod body 100 is provided with external threads. The hollow rod body 100 is used to be inserted into the anchor hole in the rock mass. The anchor head 200 is connected to one end of the hollow rod body 100 and is located inside the anchor hole. The anchor head 200 is provided with slurry flow holes, and the slurry flow holes communicate with the inner hole of the hollow rod body 100. The tray 300 is provided with a central hole, and the hollow rod body 100 passes through the central hole. The tray 300 is also provided with installation holes, and the installation holes are located at positions close to the edge of the tray 300. The nut 400 is screwed onto the hollow rod body 100. The nut 400 and the anchor head 200 are respectively located on both sides of the tray 300, and the nut 400 is used to press the tray 300 against the rock wall of the rock mass. The locking rod 10 is connected in the installation hole. A locking hole is also provided on the rock mass and is located on the side of the anchor hole. The locking rod 10 is inserted into the locking hole and locked in the locking hole, and the locking rod 10 presses the tray 300.

[0043] During specific use, first, an anchor hole and a locking hole located on the side of the anchor hole are formed on the rock wall of the rock mass. Subsequently, the hollow rod body 100 is inserted into the anchor hole. Then, slurry is injected into the hollow rod body 100, and the slurry flows from the slurry flow holes on the anchor head 200 into the gap between the wall of the anchor hole and the outer wall of the hollow rod body 100. After the slurry solidifies, the tray 300 is sleeved on the hollow rod body 100. Subsequently, the nut 400 is installed on the hollow rod body 100. The nut 400 is used to press the tray 300 against the rock wall and make the installation holes on the tray 300 face the locking holes on the rock wall. Then, the locking rod 10 is passed through the installation hole and inserted into the locking hole. The locking rod 10 inserted into the locking hole is locked in the locking hole, and the locking rod 10 presses the tray 300, that is, the locking rod 10 presses the tray 300 against the cliff wall.

[0044] With the above structure, the grouting anchor provided in this embodiment not only presses the tray 300 against the rock wall by means of the nut 400, but also presses it against the cliff wall through the locking rod 10. Compared with the grouting anchors in the prior art, the tray 300 of the grouting anchor provided in this embodiment is pressed against the rock wall by double acting forces, so that the situation of the tray 300 loosening during use can be better avoided, ensuring the support effect. Therefore, the use stability of this grouting anchor is higher.

[0045] Optionally, the locking rod 10 in this embodiment includes a rod portion 500 and a pressing plate 600, where:

[0046] The rod portion 500 is composed of a connecting section 510 and a locking section 520. The connecting section 510 and the locking section 520 are coaxially arranged. Preferably, the connecting section 510 and the locking section 520 are cylindrical structures with the same outer diameter. The pressing plate 600 is integrally formed at the end of the connecting section 510. The above-mentioned connecting section 510 is installed in the above-mentioned installation hole, and the locking section 520 is inserted and locked in the locking hole. When the locking section 520 is locked in the above-mentioned locking hole, the pressing plate 600 presses the tray 300 against the rock wall.

[0047] Moreover, the number of mounting holes formed in the tray 300 is several, and the several mounting holes are evenly distributed around the central hole. The number of lock holes formed in the rock wall is also several, and the several lock holes correspond to the several mounting holes one by one. The number of lock rods 10 is also several, and the several lock rods 10 are distributed and connected to the several lock holes and the several mounting holes one by one. For example, the number of lock holes, mounting holes, and lock rods 10 is three or four.

[0048] With the above structure, after all the lock rods 10 and nuts 400 are installed, the several lock rods 10 are evenly distributed around the nut 400, so as to better press the tray 300.

[0049] Embodiment 2:

[0050] As a specific implementation manner of Embodiment 1, in this embodiment, as Figure 2 and Figure 3 shown, the above connecting section 510 is screwed into the above mounting hole. A through hole penetrating through the connecting section 510 and the locking section 520 is formed in the rod portion 500. A plurality of slurry outlets communicating with the through hole are further formed on the side wall of the locking section 520. A clamping hole is formed in the pressing plate 600, and the clamping hole and the through hole communicate to form a grouting hole. A slurry blocking plug 700 is further included. When the grouting hole is not grouted, the slurry blocking plug 700 is clamped in the clamping hole.

[0051] When installing the tray 300 in this embodiment, first connect the above rod portion 500 to the mounting hole. Specifically, first pass the locking section 520 of the rod portion 500 through the mounting hole, and then rotate the rod portion 500 so that the connecting section 510 is screwed into the mounting hole, and ensure that the pressing plate 600 is closely attached to the tray 300. Then adjust the orientation of the tray 300 so that the rod portion 500 is aligned with the lock hole. Then slide the tray 300 on the hollow rod body 100, insert the locking section 520 into the lock hole in the rock wall and make the tray 300 contact the rock wall. Then rotate the nut 400 to press the tray 300 against the rock wall. Then remove the grouting plug, and use the grouting equipment to grout into the grouting hole formed by the clamping hole and the through hole. The slurry passes through the slurry outlet and flows into the gap between the outer wall of the locking section 520 and the inner wall of the lock hole. After this part of the slurry solidifies, the locking section 520 is tightly locked in the above lock hole, and the pressing plate 600 presses the tray 300.

[0052] Embodiment 3:

[0053] As a specific implementation manner of Embodiment 1, in this embodiment, as Figure 4 and Figure 5As shown, the above-mentioned connecting section 510 is screwed into the installation hole. The inside of the above-mentioned locking section 520 is hollowed out to form a relief hole. A number of deformation notches communicating with the relief hole are also provided in the locking section 520. The deformation notches penetrate the locking section 520 along the axial direction. Thus, it can be understood that the above-mentioned locking section 520 is composed of a number of pressing pieces. The number of pressing pieces surrounds to form the above-mentioned relief hole, and the deformation notches are formed between adjacent pressing pieces. The lock rod 10 is also provided with a screw hole penetrating through the connecting section 510 and the pressing plate 600. It also includes a stop bolt 800, which is screwed into the screw hole and inserted into the relief hole. The locking section 520 is pressed against the inner wall of the lock hole by the stop bolt 800, that is, the inner diameter of the above-mentioned relief hole is slightly smaller than the outer diameter of the above-mentioned stop bolt 800.

[0054] When installing the tray 300 in this embodiment, first connect the above-mentioned rod part 500 to the installation hole. Specifically, first pass the locking section 520 of the rod part 500 through the installation hole, and then rotate the rod part 500 so that the connecting section 510 is screwed into the installation hole, and ensure that the pressing plate 600 is in close contact with the tray 300. Then adjust the orientation of the tray 300 so that the rod part 500 is aligned with the lock hole. Then slide the tray 300 on the hollow rod body 100, insert the locking section 520 into the lock hole on the rock wall and make the tray 300 in contact with the rock wall. Then rotate the nut 400 to press the tray 300 against the rock wall. Then screw the stop bolt 800 into the screw hole between the connecting section 510 and the pressing plate 600. As the stop bolt 800 is screwed in, the pressing pieces of the locking section 520 are gradually pushed outwards. When the stop bolt 800 is completely screwed into the above-mentioned screw hole, the stop bolt 800 presses the pressing pieces against the inner wall of the lock hole, and the pressing plate 600 presses the tray 300.

[0055] More preferably, anti-slip stripes 900 are also provided on the outer wall of the above-mentioned locking section 520, so that when the locking section 520 is pressed, it can be more firmly locked in the lock hole.

[0056] Embodiment 4:

[0057] As a specific implementation manner of Embodiment 1, in this embodiment, as Figure 6 shown, both the locking section 520 and the connecting section 510 are solid structures. A number of elastic barbs 1000 are provided on the outer wall of the locking section 520. When the locking section 520 is inserted into the lock hole, the elastic barbs 1000 are hooked on the inner wall of the lock hole.

[0058] When installing the tray 300 in this embodiment, first turn the nut 400 so that the nut 400 presses the tray 300 against the rock wall and aligns the installation hole with the locking hole. Subsequently, insert the locking portion of the locking rod 10 into the installation hole and the locking hole, and then use a hammer to strike so that the locking portion of the locking rod 10 enters the locking hole. When entering the locking hole, the elastic barbs 1000 elastically deform towards the side close to the outer wall of the locking portion until the pressing plate 600 is in close contact with the tray 300. At this time, the elastic barbs 1000 are tightly pressed against the inner wall of the locking hole under their own elastic force and also hook onto the inner wall of the locking hole, thereby enabling the locking section 520 to be tightly locked in the above-mentioned locking hole, and the pressing plate 600 presses the tray 300.

[0059] As described above, the above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope recorded in the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A grouting bolt with double locking of the tray, characterized in that, Comprising: A hollow rod body (100) with external threads provided on its outer wall, and the hollow rod body (100) is used to be inserted into an anchor hole in a rock mass; An anchor head (200) connected to one end of the hollow rod body (100) and located within the anchor hole. A slurry flow hole is provided on the anchor head (200), and the slurry flow hole communicates with the inner hole of the hollow rod body (100); A tray (300) having a central hole, the hollow rod body (100) passes through the central hole, and the tray (300) is further provided with mounting holes located at positions close to the edge of the tray (300); A nut (400) screwed onto the hollow rod body (100), the nut (400) and the anchor head (200) are respectively located on both sides of the tray (300), and the nut (400) is used to press the tray (300) against the rock wall of the rock mass; A locking rod (10) connected in the mounting hole. A locking hole is also provided on the rock mass on the side of the anchor hole. The locking rod (10) is inserted into the locking hole and locked in the locking hole, and the locking rod (10) presses the tray (300).

2. The grouting bolt with double locking of the tray according to claim 1, characterized in that, The locking rod (10) includes: A rod portion (500) composed of a connecting section (510) and a locking section (520). The connecting section (510) and the locking section (520) are coaxially arranged. Among them, the connecting section (510) is installed in the mounting hole, and the locking section (520) is inserted and locked in the locking hole; A pressing plate (600) fixedly provided at the end of the connecting section (510). When the locking section (520) is locked in the locking hole, the pressing plate (600) presses on the tray (300).

3. The grouting anchor rod with double locking of the tray according to claim 2, characterized in that: A plurality of the mounting holes are provided in the tray (300), and the plurality of mounting holes are evenly distributed around the central hole; A plurality of the locking holes are provided on the rock wall. The number of the locking rods (10) is several, and the several locking rods (10) are respectively connected to the several mounting holes and the several locking holes in one-to-one correspondence.

4. The grouting anchor rod with double locking of the tray according to claim 2 or 3, characterized in that: The connecting section (510) is screwed in the mounting hole; The rod portion (500) is provided with a through hole penetrating through the connecting section (510) and the locking section (520), and a plurality of slurry outlet holes communicating with the through hole are further provided on the side wall of the locking section (520); The pressing plate (600) is provided with a clamping hole, and the clamping hole and the through hole communicate to form a grouting hole; It further includes a slurry blocking plug (700). When the grouting hole is not grouted, the slurry blocking plug (700) is clamped in the clamping hole.

5. The grouting anchor rod with double locking of the tray according to claim 2 or 3, characterized in that: The connecting section (510) is screwed in the mounting hole; The inside of the locking section (520) is hollowed out to form a relief hole, and a number of deformation notches communicating with the relief hole are also provided in the locking section (520), and the deformation notches axially penetrate through the locking section (520); The locking rod (10) is further provided with a threaded hole penetrating through the connecting section (510) and the pressing plate (600); It further includes a stop bolt (800), which is screwed into the threaded hole and inserted into the relief hole, and the locking section (520) is pressed against the inner wall of the locking hole by the stop bolt (800).

6. The grouting bolt with double locking of the tray according to claim 5, wherein: A number of anti-slip stripes (900) are further provided on the outer wall of the locking section (520).

7. The grouting bolt with double locking of the tray according to claim 2 or 3, wherein: Both the locking section (520) and the connecting section (510) are solid structures, and a number of elastic barbs (1000) are provided on the outer wall of the locking section (520). When the locking section (520) is inserted into the locking hole, the elastic barbs (1000) are hooked on the inner wall of the locking hole.

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