Expansion anchor bolt

Abstract

The utility model relates to the technical field of anchor bolts, and provides an expansion anchor bolt which comprises a sleeve, an expansion piece, a blocking piece, an anchor rod, a top column, a positioning assembly, a clamping assembly and a fixing assembly, the expansion piece is fixedly installed on the side face of the sleeve, the blocking piece is fixedly installed on the side face of the sleeve, the anchor rod is arranged in the sleeve, and the anchor rod is in threaded connection with the blocking piece. A nut is in threaded connection with the anchor rod, the jacking column is arranged in the sleeve and fixedly installed on the side face of the anchor rod, the positioning assembly is arranged in the sleeve and used for positioning the anchor rod when the anchor rod moves, the clamping assembly is arranged on the side face of the blocking piece and used for clamping the anchor rod, and the fixing assembly is arranged on the clamping assembly. By means of the technical scheme, the problems that in the prior art, the connectivity between an anchor rod and a sleeve is poor, and after the anchor bolt is inserted into a wall, if the wall vibrates, the anchor rod may deviate in the sleeve are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor bolts, in particular to an expansion anchor bolt. Background Art

[0002] Expansion anchor bolts, referred to as expansion bolts, use the relative movement of the cone and the expansion piece to cause the expansion piece to expand, thereby generating an expansion and extrusion force with the hole wall concrete, and generating pull-out resistance through shear friction to achieve anchoring of the connected parts. When fixing, the wall surface is usually opened, and then the sleeve is inserted into the wall hole, and then the anchor rod is threaded into the sleeve. By moving the anchor bolt in the sleeve, the sleeve is squeezed outward, driving the expansion piece to expand and squeeze toward the wall, so that it acts on the wall to anchor. Anchor bolts are also widely used in nuclear power plants. When installing electrical equipment in nuclear power plants, holes are generally drilled in the ground first, and then the anchor bolts are inserted into the holes to fix them, and finally the equipment and the anchor bolts are screwed together.

[0003] However, most existing anchor bolts lack a connecting component between the anchor rod and the casing, which may cause the connection between the anchor rod and the casing to be unstable. After the anchor rod is threaded into the casing and the expansion sheet is squeezed, if the wall vibrates, the anchor rod may move in the casing, which may cause the anchor rod to deviate in the casing over time. When the expansion anchor bolt is inserted into the hole by impacting it, the anchor rod may also become loose or deviated in the casing, thereby weakening the anchoring effect of the anchor bolt on the wall. Utility Model Content

[0004] The utility model provides an expansion anchor bolt, which solves the problem that the connection between the anchor rod and the sleeve in the related art is poor, and after the anchor bolt is inserted into the wall, if the wall vibrates, the anchor rod may be offset in the sleeve.

[0005] The technical solution of the utility model is as follows:

[0006] An expansion anchor comprises a sleeve and an expansion sheet, wherein the expansion sheet is fixedly mounted on the side of the sleeve, and further comprises a blocking sheet, an anchor rod, a top column, a positioning assembly, a clamping assembly and a fixing assembly, wherein the blocking sheet is fixedly mounted on the side of the sleeve, the anchor rod is arranged inside the sleeve, the anchor rod is threadedly connected to the blocking sheet, and a nut is threadedly connected to the anchor rod, the top column is arranged in the sleeve, and the top column is fixedly mounted on the side of the anchor rod, the positioning assembly is arranged in the sleeve for positioning the anchor rod when it moves, the clamping assembly is arranged on the side of the blocking sheet for clamping the anchor rod, and the fixing assembly is arranged on the clamping assembly.

[0007] Furthermore, the positioning assembly includes a mounting plate, a sliding rod and a positioning ring. Four mounting plates are provided, and the four mounting plates are grouped in pairs. The two groups of mounting plates are respectively fixedly installed on the upper inner wall and the lower inner wall of the sleeve. Two sliding rods are provided, and the two sliding rods are respectively fixedly installed between the two groups of mounting plates. The positioning ring is slidably installed on the sliding rod, and the sliding rod passes through the positioning ring.

[0008] Furthermore, the clamping assembly includes a rotating plate, a connecting rod and a clamping ring. Four rotating plates are provided, and the four rotating plates are grouped in pairs. Each group of rotating plates is fixedly installed on the side of the blocking plate. Two connecting rods are provided, and the two connecting rods are respectively rotatably installed between the two groups of mounting plates. Two clamping rings are provided, and the two clamping rings are respectively fixedly installed on the two connecting rods.

[0009] Furthermore, the fixing assembly includes a fixing plate and a fixing bolt. There are four fixing plates, and the four fixing plates are grouped in pairs. Each group of fixing plates is fixedly mounted on two clamping rings, and threaded holes are opened on the fixing plates. The fixing bolts are threadedly connected in the threaded holes.

[0010] Furthermore, a blocking rod is fixedly mounted on the sliding rod, a concave hole is provided on the positioning ring, and the blocking rod can be inserted into the concave hole of the positioning ring.

[0011] Furthermore, the expansion sheet is provided with a through hole, the diameter of the through hole of the expansion sheet is smaller than the diameter of the top column, and when the top column is inserted into the through hole of the expansion sheet, the expansion sheet can be expanded and squeezed outward.

[0012] Furthermore, after the top column moves to the side end of the expansion piece, the positioning ring moves to the stopper rod, and the stopper rod is inserted into the recessed hole of the positioning ring to stop it.

[0013] Furthermore, when the connecting rod is rotated to a horizontal position, the two clamping rings fit together up and down, and the inner side walls of the clamping rings fit together with the outer side walls of the anchor rods. At this time, the threaded holes of the two groups of fixing plates correspond to each other up and down.

[0014] Furthermore, the positioning ring, the nut and the blocking plate are all located at the same horizontal position.

[0015] Furthermore, a pointed cone is fixedly mounted on the side of the expansion sheet.

[0016] The working principle and beneficial effects of the utility model are:

[0017] 1. In the utility model, through the positioning assembly, when the anchor rod moves, the anchor rod drives the positioning ring to move on the sliding rod, so that the anchor rod cannot move left and right in the casing, avoiding the deviation of the anchor rod when moving, making it difficult to insert the top column into the expansion piece, resulting in poor expansion effect;

[0018] 2. In the utility model, the clamping ring can be used to clamp the outer wall of the anchor rod through the clamping assembly. When the anchor bolt is inserted into the wall hole and the side of the anchor rod is hit, the anchor rod is prevented from vibrating in the casing and thus deviating.

[0019] To summarize, the expansion anchor bolt, through the mutual cooperation among the blocking plate, anchor rod, top column, positioning assembly, clamping assembly and fixing assembly, can prevent the anchor rod from being offset when moving in the sleeve or inserting the sleeve into the wall hole, so that the top column can be inserted into the expansion plate to expand and squeeze it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic cross-sectional structure diagram of the utility model as a whole;

[0023] Figure 3 It is a schematic diagram of the structure of the anchor rod, top column and positioning assembly of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the blocking piece, the clamping assembly and the fixing assembly of the utility model.

[0025] In the figure: 1. casing; 2. expansion plate; 3. blocking plate; 4. anchor rod; 5. nut; 6. top column; 7. pointed cone; 101. mounting plate; 102. sliding rod; 103. positioning ring; 201. rotating plate; 202. connecting rod; 203. clamping ring; 301. fixing plate; 302. fixing bolt; 401. blocking rod. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1~Figure 4As shown, this embodiment proposes an expansion anchor bolt, including a sleeve 1, an expansion sheet 2, a blocking sheet 3, an anchor rod 4, a top column 6, a positioning assembly, a clamping assembly and a fixing assembly, the expansion sheet 2 is fixedly mounted on the side of the sleeve 1, the blocking sheet 3 is fixedly mounted on the side of the sleeve 1, the anchor rod 4 is arranged inside the sleeve 1, the anchor rod 4 is threadedly connected to the blocking sheet 3, and a nut 5 is threadedly connected to the anchor rod 4, the top column 6 is arranged in the sleeve 1, and the top column 6 is fixedly mounted on the side of the anchor rod 4, the positioning assembly is arranged in the sleeve 1, and is used to position the anchor rod 4 when it moves, the clamping assembly is arranged on the side of the blocking sheet 3, and is used to clamp the anchor rod 4, and the fixing assembly is arranged on the clamping assembly.

[0028] In this embodiment, the positioning assembly includes a mounting plate 101, a sliding rod 102 and a positioning ring 103. Four mounting plates 101 are provided, and the four mounting plates 101 are grouped in pairs. The two groups of mounting plates 101 are respectively fixedly installed on the upper inner wall and the lower inner wall of the sleeve 1. Two sliding rods 102 are provided, and the two sliding rods 102 are respectively fixedly installed between the two groups of mounting plates 101. The positioning ring 103 is slidably installed on the sliding rod 102. The sliding rod 102 penetrates the positioning ring 103. When the anchor rod 4 moves forward, it can drive the positioning ring 103 to move on the sliding rod 102, thereby limiting the left and right deviation of the anchor rod 4.

[0029] In this embodiment, the clamping assembly includes a rotating plate 201, a connecting rod 202 and a clamping ring 203. Four rotating plates 201 are provided, and the four rotating plates 201 are grouped in pairs. Each group of rotating plates 201 is fixedly installed on the side of the blocking plate 3. Two connecting rods 202 are provided, and the two connecting rods 202 are respectively rotatably installed between the two groups of mounting plates 101. Two clamping rings 203 are provided, and the two clamping rings 203 are respectively fixedly installed on the two connecting rods 202. By rotating the connecting rod 202, the two clamping rings 203 are fitted up and down accordingly, so that the clamping ring 203 clamps and fixes the outer wall of the anchor rod 4.

[0030] In this embodiment, the fixing assembly includes a fixing plate 301 and a fixing bolt 302. Four fixing plates 301 are provided, and the four fixing plates 301 are grouped in pairs. Each group of fixing plates 301 is fixedly installed on two clamping rings 203, and threaded holes are opened on the fixing plates 301. The fixing bolts 302 are threadedly connected in the threaded holes. After the two clamping rings 203 clamp and fix the anchor rod 4, the fixing bolts 302 are threadedly connected into the threaded holes of the fixing plates 301, thereby fixing the two clamping rings 203.

[0031] In this embodiment, a stop rod 401 is fixedly installed on the sliding rod 102, a recessed hole is opened on the positioning ring 103, and the stop rod 401 can be inserted into the recessed hole of the positioning ring 103. After the positioning ring 103 moves to a certain position, the stop rod 401 can be inserted into the recessed hole of the positioning ring 103, thereby stopping the positioning ring 103 and the anchor rod 4 from moving forward.

[0032] In this embodiment, the expansion sheet 2 is provided with a through hole, the diameter of the through hole of the expansion sheet 2 is smaller than the diameter of the top column 6, and when the top column 6 is inserted into the through hole of the expansion sheet 2, the expansion sheet 2 can be expanded and squeezed outward. After the top column 6 is inserted into the expansion sheet 2, the expansion sheet 2 is squeezed to expand outward, thereby squeezing the inner side of the wall hole.

[0033] In this embodiment, after the top column 6 moves to the side end of the expansion piece 2, the positioning ring 103 moves to the stop rod 401, and the stop rod 401 is inserted into the recessed hole of the positioning ring 103 to stop it. After the top column 6 moves to the side end of the expansion piece 2, the stop rod 401 stops the positioning ring 103, causing the anchor rod 4 and the top column 6 to stop moving forward.

[0034] In this embodiment, when the connecting rod 202 is rotated to a horizontal position, the two clamping rings 203 fit together up and down, and the inner wall of the clamping ring 203 fits together with the outer wall of the anchor rod 4. At this time, the threaded holes of the two sets of fixing plates 301 correspond to each other up and down. After the two clamping rings 203 fit together up and down, the outer wall of the anchor rod 4 is clamped and fixed, thereby preventing the anchor rod 4 from being offset in the sleeve 1 after the anchor bolt is inserted into the wall hole.

[0035] In this embodiment, the positioning ring 103, the nut 5 and the blocking plate 3 are all located at the same horizontal position, thereby ensuring that the anchor rod 4 can move forward horizontally without causing left and right deviation.

[0036] In this embodiment, a pointed cone 7 is fixedly installed on the side of the expansion piece 2. After drilling the wall, when inserting the anchor bolt into the wall hole, the pointed cone 7 can facilitate the smooth insertion of the anchor bolt into the wall hole, thereby facilitating subsequent fixation.

[0037] In this embodiment, when installing the expansion anchor, first drill a hole on the wall or equipment, then rotate the connecting rod 202 to rotate the two clamping rings 203 and fit them up and down. At this time, the two clamping rings 203 can fit the outer wall of the anchor rod 4, and then the fixing bolt 302 is threaded into the threaded hole of the fixing plate 301 to fix the clamping ring 203, so that the anchor rod 4 stops moving. Then the anchor bolt is inserted into the drilled hole. When inserting or hammering the side of the anchor bolt with the help of a tool, the anchor rod 4 is difficult to move under the action of the clamping ring 203, so that it still maintains a horizontal position and is inserted. After completion, unscrew the fixing bolt 302, rotate the connecting rod 202 to the vertical position, and then rotate the nut 5. The nut 5 drives the anchor rod 4 to move forward, and the anchor rod 4 thereby drives the positioning ring 103 to move on the sliding rod 102, so that the anchor rod 4 moves in the horizontal direction. After the movement, the top column 6 is inserted into the expansion piece 2. After the top column 6 is inserted into the sidemost end of the expansion piece 2, the positioning ring 103 moves to the stop rod 401, so that the stop rod 401 is inserted into the recessed hole of the positioning ring 103 to stop it from moving forward. Under the squeezing of the expansion piece 2, the top column 6 causes the expansion piece 2 to expand outward, thereby squeezing and fixing the wall hole or equipment.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An expansion anchor bolt, comprising a sleeve (1) and an expansion sheet (2), wherein the expansion sheet (2) is fixedly mounted on a side of the sleeve (1), characterized in that: Also includes: A blocking sheet (3), the blocking sheet (3) being fixedly mounted on a side surface of the sleeve (1); An anchor rod (4), the anchor rod (4) being arranged inside the casing (1), the anchor rod (4) being threadedly connected to the blocking plate (3), and a nut (5) being threadedly connected to the anchor rod (4); A top column (6), the top column (6) being arranged in the casing (1), and the top column (6) being fixedly mounted on a side surface of the anchor rod (4); A positioning component, the positioning component is arranged in the sleeve (1) and is used to position the anchor rod (4) when it moves; A clamping assembly, the clamping assembly being arranged on a side of the blocking sheet (3) and being used to clamp the anchor rod (4); A fixing component is arranged on the clamping component.

2. An expansion anchor according to claim 1, characterized in that: The positioning component comprises: A mounting plate (101), wherein four mounting plates (101) are provided, and each of the four mounting plates (101) is grouped in pairs, and two groups of the mounting plates (101) are respectively fixedly mounted on the upper inner wall and the lower inner wall of the sleeve (1); A sliding rod (102), wherein two sliding rods (102) are provided, and the two sliding rods (102) are respectively fixedly mounted between two groups of mounting plates (101); A positioning ring (103), the positioning ring (103) is slidably mounted on the sliding rod (102), the sliding rod (102) passes through the positioning ring (103), and the positioning ring (103) is fixedly mounted on the anchor rod (4).

3. An expansion anchor according to claim 2, characterized in that: The clamping assembly comprises: A rotating plate (201), wherein four rotating plates (201) are provided, and each of the four rotating plates (201) is arranged in pairs, and each group of rotating plates (201) is fixedly mounted on a side surface of the blocking plate (3); A connecting rod (202), wherein two connecting rods (202) are provided, and the two connecting rods (202) are rotatably mounted between the two groups of mounting plates (101); A clamping ring (203), wherein two clamping rings (203) are provided, and the two clamping rings (203) are respectively fixedly mounted on the two connecting rods (202).

4. An expansion anchor according to claim 3, characterized in that: The fixing assembly comprises: A fixing plate (301), wherein four fixing plates (301) are provided, and each of the four fixing plates (301) is arranged in pairs, and each group of fixing plates (301) is respectively fixedly mounted on two of the clamping rings (203), and threaded holes are provided on the fixing plates (301); A fixing bolt (302), wherein the fixing bolt (302) is threadedly connected in the threaded hole.

5. An expansion anchor according to claim 4, characterized in that: A blocking rod (401) is fixedly mounted on the sliding rod (102), a concave hole is provided on the positioning ring (103), and the blocking rod (401) can be inserted into the concave hole of the positioning ring (103).

6. An expansion anchor according to claim 5, characterized in that: The expansion sheet (2) is provided with a through hole, the diameter of the through hole of the expansion sheet (2) is smaller than the diameter of the top column (6), and when the top column (6) is inserted into the through hole of the expansion sheet (2), the expansion sheet (2) can expand and squeeze outwards.

7. An expansion anchor according to claim 6, characterized in that: After the top column (6) moves to the side end of the expansion sheet (2), the positioning ring (103) moves to the stopper rod (401), and the stopper rod (401) is inserted into the recessed hole of the positioning ring (103) to stop it.

8. An expansion anchor according to claim 7, characterized in that: When the connecting rod (202) is rotated to a horizontal position, the two clamping rings (203) fit together vertically, and the inner wall of the clamping ring (203) fits together with the outer wall of the anchor rod (4). At this time, the threaded holes of the two groups of fixing plates (301) correspond to each other vertically.

9. The expansion anchor according to claim 8, characterized in that: The positioning ring (103), the nut (5) and the blocking sheet (3) are all located at the same horizontal position.

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