Anchoring rod grouting orifice stopper
By designing a plugging device for the grouting hole of the anchor bolt, the tightening block and the elastic column are tightly attached to the outside of the anchor bolt, and the movable plate is inserted into the inner wall of the hole, which solves the problem of grout leakage in the anchor bolt hole and improves the grouting quality and construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SECOND ENG BUREAU LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-14
AI Technical Summary
When the construction process of grouting before bolt insertion is adopted in the top arch section, the grout in the anchor bolt hole is prone to leakage, resulting in the cement mortar anchor bolt hole not being full enough, which affects the construction progress.
A plugging device for anchor bolt grouting orifices is designed, comprising a grouting plug, a fixed column, an elastic column, a fastening plate, a tightening block, and a connecting column. The tightening block is tightly fitted to the outer side of the anchor bolt with the elastic column and the fastening plate. The movable plate is pushed out and locked into the inner wall of the orifice after the anchor bolt is inserted, preventing the plugging device from shifting and ensuring the grouting quality.
It effectively prevents grout leakage during the grouting process, ensures grouting quality, solves the problem of grout leakage at the upward angle of the anchor bolt hole, and improves construction efficiency.
Smart Images
Figure CN224496489U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to, but is not limited to, the field of tunnel construction technology, and more specifically, to a plugging device for anchor bolt grouting holes. Background Technology
[0002] The construction of cement mortar anchor bolts in tunnels adopts the construction process of grouting first and then inserting bolts at the sidewalls, and the construction process of inserting bolts first and then grouting at the top arch. The construction time is twice as long when inserting bolts first and then grouting compared to the process of grouting first and then inserting bolts. In order to ensure the construction progress and save support construction time,
[0003] However, when using the grouting-before-insertion construction process in the top arch section, because the anchor bolt holes are angled upwards, the grout will fall down the hole wall during the insertion of the bolt, causing the cement mortar in the anchor bolt hole to fail to meet the design requirements for fullness. Therefore, a grouting hole plugging device for anchor bolts was designed. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an anchor bolt grouting hole plugger.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] This utility model discloses an anchor bolt grouting hole plug, including a grouting plug. The grouting plug includes a fixed column, an elastic column, a fastening plate, a tightening block, and a connecting column. The elastic column is disposed at the upper end of the fixed column, the fastening plate is disposed at the upper end of the elastic column, the tightening block is sleeved on the outside of the elastic column, and the connecting column is fixed at the lower end of the fixed column.
[0007] A reinforcing member is disposed inside the connecting column. The reinforcing member includes a sleeve, a movable rod, and a top block. The sleeve is sleeved on the outside of the movable rod, and the top block is disposed at the outer end of the movable rod.
[0008] As a preferred embodiment of this utility model, the grouting plug is hollow, the elastic column is corrugated, and the two ends of the elastic column are fixedly connected to the fastening plate and the fixing column, respectively.
[0009] As a preferred technical solution of this utility model, the fastening plate has a constricted opening design, with the constricted opening facing upwards, and several movable slits are provided on the outer side of the fastening plate, so that the fastening plate is in a petal shape through the movable slits.
[0010] As a preferred technical solution of this utility model, both the fastening plate and the elastic column are made of manganese steel or aluminum-magnesium alloy, and the tightening block is threadedly engaged with the fastening plate and the elastic column.
[0011] As a preferred technical solution of this utility model, the bottom two sides of the connecting column are provided with recesses, and a movable plate is provided in the recess. The cross-section of the movable plate and the recess is U-shaped. The movable plate is made of beryllium copper and has a threaded section near the upper end of the connecting column.
[0012] As a preferred embodiment of this utility model, the movable plate has a mounting hole at its center that is adapted to the sleeve, the sleeve is threaded into the mounting hole, the movable rod is movably connected to the sleeve, and a contact plate is fixed at the rear end of the movable rod.
[0013] As a preferred embodiment of this utility model, a guide protrusion is fixed on the inner wall of the sleeve, and a guide block adapted to the guide protrusion is fixed on the outer side of the movable rod. The guide block is slidably connected to the guide protrusion, and the top block is made of rubber.
[0014] As a preferred embodiment of this utility model, a spring is provided between the movable rod and the sleeve, and the two ends of the spring are respectively inserted into the movable rod and the sleeve.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This invention utilizes a tightening block that works in conjunction with an elastic column and a fastening plate to ensure a tight fit against the outside of the anchor rod, effectively preventing grout leakage during grouting. Simultaneously, the movable plate pushes outward after the anchor rod is inserted, and the top block engages with a locking hole in the inner wall of the borehole, thus limiting the position of the plug within the hole and preventing displacement of the plug during grouting. This ensures grouting quality and solves the problem of grout leakage caused by the anchor rod hole being angled upwards and the grout falling down the hole wall during insertion.
[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a disassembly diagram of the present invention;
[0022] Figure 3 This is a cross-sectional structural diagram of the present invention;
[0023] Figure 4 This is an enlarged structural diagram of part A of the cross-sectional structural schematic diagram of this utility model;
[0024] Figure 5 This is a schematic diagram of the structure of this utility model in conjunction with the anchor rod;
[0025] In the diagram: 10. Grouting plug; 101. Fixed column; 102. Elastic column; 103. Fastening plate; 104. Movable joint; 105. Tightening block; 106. Connecting column; 107. Threaded section; 108. Movable plate;
[0026] 20. Reinforcing member; 201. Sleeve; 202. Movable rod; 203. Contact plate; 204. Top block; 205. Guide ridge; 206. Guide block;
[0027] 30. Anchor bolt; 40. Grouting hole; 401. Clip hole. Detailed Implementation
[0028] like Figure 1-5 As shown, this utility model provides a grouting hole plugger for anchor bolts, including a grouting plug 10. The grouting plug 10 includes a fixed column 101, an elastic column 102, a fastening plate 103, a tightening block 105, and a connecting column 106. The elastic column 102 is disposed at the upper end of the fixed column 101, the fastening plate 103 is disposed at the upper end of the elastic column 102, the tightening block 105 is sleeved on the outside of the elastic column 102, and the connecting column 106 is fixed at the lower end of the fixed column 101.
[0029] The reinforcing member 20 is disposed inside the connecting column 106. The reinforcing member 20 includes a sleeve 201, a movable rod 202, and a top block 204. The sleeve 201 is sleeved on the outside of the movable rod 202, and the top block 204 is disposed at the outer end of the movable rod 202.
[0030] Furthermore, in this embodiment, the grouting plug 10 is hollow to facilitate the insertion of the anchor rod 30 through the grouting plug 10. The elastic column 102 is corrugated and the corrugation is adapted to the thread of the tightening block 105 to facilitate the threaded connection of the tightening block 105 to the elastic column 102. The two ends of the elastic column 102 are fixedly connected to the fastening plate 103 and the fixing column 101, respectively.
[0031] In this embodiment, the fastening plate 103 has a constricted opening design with the constricted opening facing upwards. Several movable slots 104 are provided on the outer side of the fastening plate 103. The fastening plate 103 is petal-shaped through the movable slots 104, which allow the fastening plate 103 to have a certain amount of room to move and expand.
[0032] In this embodiment, both the fastening plate 103 and the elastic column 102 are made of manganese steel or aluminum-magnesium alloy. The materials selected for the fastening plate 103 and the elastic column 102 enable both the fastening plate 103 and the elastic column 102 to undergo elastic deformation and recover. The tightening block 105 is threadedly engaged with the fastening plate 103 and the elastic column 102. By rotating the tightening block 105 along the threads and the waveform of the elastic column 102 on the outer surface of the fastening plate 103, the fastening plate 103 and the elastic column 102 are tightened.
[0033] In this embodiment, recesses are provided on both sides of the bottom of the connecting column 106, and a movable plate 108 is provided in the recess. The cross-section of the movable plate 108 and the recess is U-shaped. The movable plate 108 is made of beryllium copper. Based on the recess design formed by the movable plate 108, the movable plate 108 is in a concave state before the anchor rod 30 is inserted. After the anchor rod 30 is inserted, the movable plate 108 is squeezed to both sides by the anchor rod 30. Based on the material of the movable plate 108, the movable plate 108 is pushed outward. A threaded section 107 is provided near the upper end of the connecting column 106. The connecting column 106 is installed in the grouting hole 40 of the anchor rod 30 through the threaded section 107. Depending on the condition of the hole, it is selected whether to pre-embed a nut in the hole to fix the connecting column 106. If the hole is already threaded, no nut is needed.
[0034] In this embodiment, the center of the movable plate 108 is provided with a mounting hole that matches the sleeve 201. The sleeve 201 is threaded into the mounting hole. The movable rod 202 is movably connected to the sleeve 201. A contact plate 203 is fixed to the rear end of the movable rod 202. The sleeve 201 is fixed to the movable plate 108 through the mounting hole. The thickness of the movable plate 108 must be at least two-thirds of the length of the sleeve 201 to fix the sleeve 201. The movable rod 202 moves inside the sleeve 201 and contacts the anchor rod 30 through the contact plate 203, so that the anchor rod 30 abuts against the contact plate 203 when inserted. The contact plate 203 pushes the movable rod 202 outward from inside the sleeve 201.
[0035] In this embodiment, a guide protrusion 205 is fixed on the inner wall of the sleeve 201, and a guide block 206 adapted to the guide protrusion 205 is fixed on the outer side of the movable rod 202. The guide block 206 is slidably connected to the guide protrusion 205. The top block 204 is made of rubber. The movement of the movable rod 202 in the sleeve 201 is guided by the cooperation of the guide block 206 and the guide protrusion 205, so that the top block 204 at the end of the movable rod 202 is inserted into the pre-opened hole 401 on the inner wall of the grouting hole 40, thereby limiting the position of the plugger in the hole.
[0036] In this embodiment, a spring is provided between the movable rod 202 and the sleeve 201. The two ends of the spring are respectively inserted into the movable rod 202 and the sleeve 201. When the movable rod 202 extends, it pulls the spring to extend. Based on the force of the spring, after the anchor rod 30 is pulled out after use, the spring retracts and pulls out the top block 204 in the locking hole 401. The preload of the spring is set according to the actual construction situation.
[0037] Specifically, during use, the connecting column 106 is installed into the grouting hole 40 of the anchor rod 30. The movable plate 108 at the bottom of the connecting column 106 is in a concave state before the anchor rod 30 is inserted. The tightening block 105 is pre-set on the outside of the elastic column 102. When the anchor rod 30 is inserted, both the fastening plate 103 and the elastic column 102 are stretched open. After the anchor rod 30 is inserted, the tightening block 105 is manually rotated to tighten the elastic column 102 and the fastening plate 103 inward, so that the two are tightly attached to the outer surface of the anchor rod 30 to prevent grout leakage.
[0038] At the same time, when the anchor rod 30 extends into the contact plate 203, the contact plate 203 is first pushed by the anchor rod 30, and simultaneously pushes the movable rod 202 to move to both sides. After the abutment plate contacts the movable plate 108, the movable plate 108 is squeezed to move to both sides, driving the reinforcing member 20 to move to both sides as a whole and push outward, so that the top block 204 at the outer end of the movable rod 202 is inserted into the pre-opened hole 401 on the inner wall of the grouting hole 40, thereby limiting the position of the plugger in the hole.
[0039] Then, grouting is carried out through anchor rod 30. After grouting is completed, anchor rod 30 is pulled out. The spring retracts under the force between movable rod 202 and sleeve 201, pulling the top block 204 out of the locking hole 401. The tightening block 105 is loosened, and elastic column 102 and fastening plate 103 return to their original state. Then, the plug is removed from the hole.
[0040] The grouting plug 10, fixing column 101, elastic column 102, fastening plate 103, tightening block 105, connecting column 106, movable plate 108, sleeve 201, movable rod 202, contact plate 203, top block 204, guide protrusion 205, guide block 206, anchor rod 30 and other components of this utility model are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0041] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0042] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.
[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A plugging device for grouting holes of anchor bolts, characterized in that, The grouting plug (10) includes a fixed post (101), an elastic post (102), a fastening plate (103), a tightening block (105), and a connecting post (106). The elastic post (102) is located at the upper end of the fixed post (101), the fastening plate (103) is located at the upper end of the elastic post (102), the tightening block (105) is sleeved on the outside of the elastic post (102), and the connecting post (106) is fixed at the lower end of the fixed post (101). A reinforcing member (20) is disposed inside the connecting column (106). The reinforcing member (20) includes a sleeve (201), a movable rod (202), and a top block (204). The sleeve (201) is sleeved on the outside of the movable rod (202), and the top block (204) is disposed at the outer end of the movable rod (202).
2. The anchor bolt grouting hole plugger according to claim 1, characterized in that, The grouting plug (10) is hollow, and the elastic column (102) is corrugated. The two ends of the elastic column (102) are fixedly connected to the fastening plate (103) and the fixing column (101) respectively.
3. The anchor bolt grouting hole plugger according to claim 2, characterized in that, The fastening plate (103) has a constricted opening design, with the constricted opening facing upwards. Several movable slots (104) are provided on the outer side of the fastening plate (103), and the fastening plate (103) is in a petal shape through the movable slots (104).
4. The anchor bolt grouting hole plugger according to claim 3, characterized in that, The fastening plate (103) and the elastic column (102) are both made of manganese steel or aluminum-magnesium alloy, and the tightening block (105) is threadedly engaged with the fastening plate (103) and the elastic column (102).
5. The anchor bolt grouting hole plugger according to claim 4, characterized in that, The bottom sides of the connecting column (106) are provided with recesses, and a movable plate (108) is provided in the recess. The movable plate (108) and the recess have a "U" shaped cross section. The movable plate (108) is made of beryllium copper and has a threaded section (107) near the upper end of the connecting column (106).
6. The anchor bolt grouting hole plugger according to claim 5, characterized in that, The movable plate (108) has a mounting hole at its center that is adapted to the sleeve (201). The sleeve (201) is threaded into the mounting hole. The movable rod (202) is movably connected to the sleeve (201). A contact plate (203) is fixed at the rear end of the movable rod (202).
7. The anchor bolt grouting hole plugger according to claim 6, characterized in that, A guide ridge (205) is fixed on the inner wall of the sleeve (201), and a guide block (206) adapted to the guide ridge (205) is fixed on the outer side of the movable rod (202). The guide block (206) is slidably connected to the guide ridge (205), and the top block (204) is made of rubber.
8. The anchor bolt grouting hole plugger according to claim 7, characterized in that, A spring is provided between the movable rod (202) and the sleeve (201), and the two ends of the spring are respectively inserted into the movable rod (202) and the sleeve (201).