Combined anchor bolt

Abstract

The utility model provides a combined anchor bolt, which relates to the field of anchor bolts, and comprises a mounting pipe, a plurality of groups of fixing pieces are arranged on the surface of the mounting pipe, a fixing rod matched with the fixing pieces is inserted into the inner side of the mounting pipe, a knob is arranged on the outer side of the end part of the mounting pipe, a connecting structure is arranged at the end part of the fixing rod, and the connecting structure is connected with the mounting pipe. The installation pipe drives the fixing piece to be installed in a hole formed in a wall in a threaded mode by screwing the rotary knob, the installation pipe is installed stably through the shape of the threads, meanwhile, the fixing rod is installed on the inner side of the installation pipe in a threaded mode, the fixing piece expands outwards through the protruding block of the fixing piece due to extrusion and pushing of the fixing rod in the installation process, and therefore the fixing piece can be installed more stably. And meanwhile, the fixing pieces drive the threads to move towards the holes in the wall body, and the stability of the mounting pipe on the inner side of the wall body is further improved through the shapes of the threads.

Description

Technical Field

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

[0002] The combined anchor bolt is anchored by the combination of an expansion piece and a vertebral body. When in use, the vertebral body and the expansion piece move toward each other to cause the expansion piece to expand, generate expansion pressure with the concrete of the hole wall, and generate pull-out force through shear friction to achieve anchoring of the connected parts. However, traditional expansion anchor bolts have the following shortcomings: first, an expansion groove needs to be opened at the lowest end of the anchor hole during installation, which is inconvenient to install; second, each anchor bolt has only one expansion piece, and the pull-out force is relatively small. Utility Model Content

[0003] The utility model aims to solve the following problems existing in the prior art: an expansion groove needs to be opened at the lowest end of the anchor hole during installation, which is inconvenient to install, each anchor bolt has only one expansion sheet, and the pull-out resistance is relatively small.

[0004] In order to solve the problems existing in the prior art, the utility model provides a combined anchor bolt, including a mounting tube, a surface of which is provided with multiple groups of fixing plates, an inner side of the mounting tube is plugged with a fixing rod that cooperates with the fixing plates, a knob is provided on the outer side of the end of the mounting tube, and a connecting structure is provided at the end of the fixing rod.

[0005] Preferably, the plurality of groups of fixing plates are arranged at equal distances along the axis of the mounting tube, and each group of fixing plates has a plurality of fixing plates, which are arranged at equal angles according to the axis of the fixing plates.

[0006] Preferably, a protrusion in contact with the fixing rod is provided on the inner side of the fixing plate, and the protrusion is triangular in shape.

[0007] Preferably, threads are arranged on the outer sides of the mounting tube and the fixing plate, and the sizes of the threads on the outer sides of the mounting tube and the fixing plate are the same.

[0008] Preferably, a plurality of sections of threads adapted to the fixing rod are arranged on the inner side of the mounting tube and away from the inner side of the plurality of sets of fixing plates, and the plurality of sections of threads of the mounting tube have the same size.

[0009] Preferably, one end of the fixing rod near the end is hexagonal.

[0010] Preferably, the connection structure includes a connecting piece sleeved on one end of the fixing rod and a nut sleeved on the outside of the connecting piece.

[0011] Preferably, an arc block in contact with the fixing rod is arranged on the inner side of one end of the connecting member, and a plurality of notches are arranged on one end of the connecting member.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model can drive the installation tube to drive the fixing plate to be threadedly installed in the hole opened in the wall by turning the knob, so that the installation tube can be installed more stably through the shape of the thread, and at the same time, the fixing rod is threadedly installed on the inner side of the installation tube. During the installation process, the fixing rod is squeezed and pushed, so that the fixing plate expands outward through its own protrusions, thereby improving the stability of the installation tube on the inner side of the wall. At the same time, the fixing plate drives the thread to move into the hole in the wall, and further improves the stability of the installation tube on the inner side of the wall through the shape of the thread. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front part of the installation pipe and the fixing rod separated from each other in the utility model;

[0015] Figure 2 It is a schematic diagram of the rear part of the installation tube and the fixing rod separated from each other in the utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the installation pipe of the utility model;

[0017] Figure 4 It is an exploded schematic diagram of the connecting piece of the utility model;

[0018] Figure numerals: 1. mounting tube; 2. fixing plate; 3. fixing rod; 4. connecting piece; 5. nut; 6. knob. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0020] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] like Figure 1-4 As shown, a combined anchor bolt includes a mounting tube 1, a plurality of fixing plates 2 are arranged on the surface of the mounting tube 1, a fixing rod 3 cooperating with the fixing plates 2 is inserted into the inner side of the mounting tube 1, a knob 6 is arranged on the outer side of the end of the mounting tube 1, and a connecting structure is arranged at the end of the fixing rod 3.

[0023] Multiple groups of fixing plates 2 are arranged at equal distances along the axis of the mounting tube 1 . Each group of fixing plates 2 has multiple numbers and are arranged at equal angles according to the axis of the fixing plates 2 . The multiple groups of fixing plates 2 provide the mounting tube 1 with multiple secondary stabilization points.

[0024] A protrusion in contact with the fixing rod 3 is provided on the inner side of the fixing plate 2, and the protrusion is in the shape of a right-angled triangle. The widest part of the right-angled triangle is 1mm-3mm. When the fixing rod 3 is installed toward the inner side of the mounting tube 1, the fixing rod 3 drives the fixing plate 2 to bend toward the outer side of the mounting tube 1 through the protrusion, thereby improving the fixing strength of the mounting tube 1.

[0025] The outsides of the mounting tube 1 and the fixing plate 2 are both provided with threads, and the thread sizes of the mounting tube 1 and the fixing plate 2 are the same. This structure is used to make the mounting tube 1 smoothly installed in the hole of the wall.

[0026] The inner side of the mounting tube 1 and the inner side avoiding the multiple groups of fixing plates 2 are provided with multiple sections of threads adapted to the fixing rod 3, and the multiple sections of threads of the mounting tube 1 have the same size. Since the inner side of the fixing plate 2 has no threads, it can be avoided that the fixing plate 2 cannot be bent outward due to the threaded connection.

[0027] One end of the fixing rod 3 near the end is hexagonal, and the hexagonal shape can be matched with common tools for threading the fixing rod 3 to the inner side of the mounting tube 1 .

[0028] The connection structure includes a connection piece 4 sleeved on one end of the fixing rod 3 and a nut 5 sleeved on the outside of the connection piece 4 .

[0029] An arc block in contact with the fixing rod 3 is arranged on the inner side of one end of the connecting member 4, and a plurality of notches are arranged at one end of the connecting member 4, wherein threads matching with the nut 5 are arranged on the outer side of the connecting member 4 and at the notches of the connecting member 4, for fixing the nut 5 at the notches of the connecting member 4.

[0030] Working principle:

[0031] During operation, the mounting tube 1 drives the fixing plate 2 to be installed in the hole opened in the wall by turning the knob 6, so that the mounting tube 1 is fixed in the wall through the thread, so that the installation of the mounting tube 1 is relatively stable. At the same time, one end of the fixing rod 3 is inserted into the inner side of the mounting tube 1, and the fixing rod 3 is screwed toward the inner side of the mounting tube 1 through the hexagonal end of the fixing rod 3, so that the mounting tube 1 is threadedly connected with the fixing rod 3. At the same time, the fixing plate 2 is expanded outward through its own convex block through the extrusion and pushing of the fixing rod 3, so as to improve the mounting tube 1. The stability on the inside of the wall is enhanced, and the fixing plate 2 drives the thread to move into the hole in the wall, and through the thread shape, the stability of the installation pipe 1 on the inside of the wall is further improved. At the same time, through the opening at one end of the connecting piece 4, the connecting piece 4 is sleeved on one end of the fixing rod 3, and the arc block inside the connecting piece 4 is located at the hexagon of the fixing rod 3, and the nut 5 is threadedly connected to one end of the connecting piece 4, and the opening of the connecting piece 4 is limited, so that the connecting piece 4 is fixed to the end of the fixing rod 3, so that the application range of the anchor bolt is increased.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A combined anchor bolt, characterized in that: The invention comprises a mounting tube (1), wherein a plurality of sets of fixing plates (2) are arranged on the surface of the mounting tube (1), a fixing rod (3) cooperating with the fixing plates (2) is inserted into the inner side of the mounting tube (1), a knob (6) is arranged on the outer side of the end of the mounting tube (1), and a connecting structure is arranged at the end of the fixing rod (3).

2. A combined anchor bolt according to claim 1, characterized in that: A plurality of groups of fixing plates (2) are arranged at equal distances along the axis of the mounting tube (1); each group of fixing plates (2) has a plurality of fixing plates (2) and are arranged at equal angles according to the axis of the fixing plates (2).

3. A combined anchor bolt according to claim 1, characterized in that: The inner side of the fixing plate (2) is provided with a protrusion that contacts the fixing rod (3), and the protrusion is in a triangular shape.

4. A combined anchor bolt according to claim 1, characterized in that: The outer sides of the mounting tube (1) and the fixing plate (2) are both provided with threads, and the thread sizes of the outer sides of the mounting tube (1) and the fixing plate (2) are the same.

5. The combined anchor bolt according to claim 1, characterized in that: A plurality of sections of threads adapted to the fixing rod (3) are arranged on the inner side of the installation tube (1) and away from the inner sides of the plurality of sets of fixing plates (2), and the plurality of sections of threads of the installation tube (1) have the same size.

6. A combined anchor bolt according to claim 1, characterized in that: One end of the fixing rod (3) is hexagonal near the end.

7. A combined anchor bolt according to claim 1, characterized in that: The connection structure comprises a connection piece (4) sleeved on one end of the fixing rod (3) and a nut (5) sleeved on the outside of the connection piece (4).

8. A combined anchor bolt according to claim 7, characterized in that: An arc block in contact with the fixing rod (3) is arranged on the inner side of one end of the connecting piece (4), and a plurality of notches are arranged on one end of the connecting piece (4).

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