Supporting arm with angle capable of being adjusted at will

Abstract

The utility model provides a corbel with an angle capable of being adjusted at will, and relates to the technical field of mechanical and electrical installation of urban underground pipe galleries. The corbel with the angle capable of being adjusted at will comprises a U-shaped base, a C-shaped steel arm body and a limiting fixing plate, one end of the C-shaped steel arm body is rotationally connected with the U-shaped base, first teeth are arranged at the upper end of the inner side edge of the C-shaped steel arm body, two tooth-shaped nuts are arranged in an inner cavity of the C-shaped steel arm body, and a plastic framework is installed at the lower end of the C-shaped steel arm body. According to the corbel with the angle capable of being adjusted at will, by arranging the C-shaped steel arm body rotationally connected with the U-shaped base, one end of the C-shaped steel arm body can rotate at will on the U-shaped base, first teeth and a tooth-shaped nut are arranged in the C-shaped steel arm body, and a limiting fixing plate is arranged at the bottom of the C-shaped steel arm body; and after the C-shaped steel arm body rotates to a proper position, the groove of the limiting fixing plate is clamped on the U-shaped base, so that the limiting fixing plate is prevented from moving.

Description

Technical Field

[0001] The utility model relates to the technical field of electromechanical installation of urban underground pipe gallery, in particular to a support arm with arbitrarily adjustable angles. Background Art

[0002] In order to facilitate urban management, modern cities have installed a large amount of electricity, communications, water supply and drainage, gas, etc. in urban underground pipe corridors. A large number of brackets need to be installed in the pipe corridors to bear these loads. The cross-section shape of some urban underground pipe corridors is an arc shape. The bracket needs to be installed at different elevations. Obviously, the angle between the arm body and the base of the bracket changes. For the convenience of manufacturing and installation, the angle between the arm body and the base of the bracket should be adjustable. There are many structures of adjustable angle brackets on the market. Some products only rely on the friction between fasteners to adjust the angle, and there is a possibility of loosening; some products adjust the angle through a series of circular holes or circular gaps distributed around the rotating axis, and there is a problem that the adjustment angle is too large and the arm body cannot be leveled. Utility Model Content

[0003] The utility model aims to provide a support arm with an arbitrarily adjustable angle, which can adjust the support arm arbitrarily and is not easy to be loosened.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: an angle-adjustable support arm, comprising a U-shaped base, a C-shaped steel arm body and a limiting fixing plate, one end of the C-shaped steel arm body is rotatably connected to the U-shaped base, the upper end of the inner side of the C-shaped steel arm body is provided with evenly distributed teeth 1, two toothed nuts are arranged in the inner cavity of the C-shaped steel arm body, a plastic frame is installed at the lower end of the C-shaped steel arm body, two toothed nuts are installed in the inner cavity of the C-shaped steel arm body through the plastic frame, and two rows of teeth 2 matching with teeth 1 are opened on one side of the toothed nut close to the bottom of the C-shaped steel arm body, and the limiting fixing plate is connected to the toothed nuts and the plastic frame by bolts.

[0005] Specifically, two oblong holes are formed on the bottom surface of the U-shaped base, symmetrical circular holes 1 are formed on the two side surfaces of the U-shaped base, and symmetrical circular holes 2 are formed on the two side surfaces of one end of the C-shaped steel.

[0006] Specifically, the end of the limit fixing plate close to the U-shaped base is a flat plate structure, and the limit fixing plate close to the U-shaped base has two grooves. The other end of the limit fixing plate is a U-shaped structure, and the bottom of the limit fixing plate U-shaped structure has two mounting holes.

[0007] Specifically, the plastic frame includes a mounting plate and a cylindrical fixing block mounted on the mounting plate, a rectangular hole matching the toothed nut is opened on the side of the cylindrical fixing block, and a circular hole three is opened in the middle of the bottom surface of the plastic frame.

[0008] Specifically, a threaded hole is provided in the middle of one side of the toothed nut close to the bottom of the C-shaped steel arm body, and the threaded hole is located between two rows of teeth.

[0009] Compared with the prior art, the support arm with arbitrarily adjustable angle has the following beneficial effects:

[0010] The support arm with arbitrarily adjustable angle is provided with a C-shaped steel arm body rotatably connected to the U-shaped base, so that one end of the C-shaped steel arm body can be arbitrarily rotated on the U-shaped base, and teeth and toothed nuts are provided in the C-shaped steel arm body. A limit fixing plate is provided at the bottom of the C-shaped steel arm body. After the C-shaped steel arm body is rotated to a suitable position, the groove of the limit fixing plate is stuck on the U-shaped base, and the nut of the limit fixing plate is locked. The teeth and the toothed nut can be meshed with each other to prevent the limit fixing plate from moving, thereby limiting the rotation of the C-shaped steel arm body, fixing the C-shaped steel arm body, and preventing it from loosening. At the same time, by providing suitable teeth and toothed nuts, the C-shaped steel arm body can be arbitrarily adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the limit fixing plate of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the plastic frame and toothed nut of the utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the C-shaped steel arm body of the utility model;

[0015] Figure 5 This is a schematic diagram of the U-shaped base structure of the utility model.

[0016] Among them, 1. U-shaped base; 2. C-shaped steel arm; 3. limit fixing plate; 4. toothed nut; 5. plastic frame; 6. tooth one; 7. tooth two; 8. mounting hole; 9. oblong hole; 10. round hole one; 11. round hole two; 12. groove; 13. round hole three; 14. threaded hole; 51. mounting plate; 52. cylindrical fixing block; 53. rectangular hole.

[0017] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in 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 in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model. It should be noted that in the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and other terms indicating direction or position relationship are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0020] like Figure 1-5 As shown, the embodiment of the utility model provides a support arm with an arbitrarily adjustable angle, including a U-shaped base 1, a C-shaped steel arm body 2 and a limit fixing plate 3. The side of the U-shaped base 1 in contact with the support surface is the bottom surface, and the bottom surface of the U-shaped base 1 is provided with two oblong holes 9 for fixing the U-shaped base 1 on the support surface. For example, in an underground pipe gallery, the two side surfaces of the U-shaped base 1 are provided with symmetrical circular holes 10, and the two side surfaces of one end of the C-shaped steel 2 are provided with symmetrical circular holes 11. Bolts are used to pass through the circular holes 10 and 11 to rotatably connect one end of the C-shaped steel arm body 2 to the U-shaped base 1. One end of the C-shaped steel arm body can be arbitrarily rotated on the U-shaped base.

[0021] The upper end of the inner side of the C-shaped steel arm body 2 is provided with uniformly distributed teeth 1 6, two toothed nuts 4 are provided in the inner cavity of the C-shaped steel arm body 2, a plastic frame 5 is installed at the lower end of the C-shaped steel arm body 2, two toothed nuts 4 are installed in the inner cavity of the C-shaped steel arm body 2 through the plastic frame 5, and two rows of teeth 2 7 matching with teeth 1 6 are provided on one side of the toothed nut 4 close to the bottom of the C-shaped steel arm body 2, and the limit fixing plate 3 is connected to the toothed nut 4 and the plastic frame 5 by bolts. By setting teeth 1 6 and teeth 2 7 of appropriate specifications, teeth 1 6 and teeth 2 7 can be meshed with each other when the bolts of the limit fixing plate 3 are tightened, so as to prevent the limit fixing plate 3 from moving on the C-shaped steel arm body 2.

[0022] Furthermore, one end of the limiting fixing plate 3 close to the U-shaped base 1 is a flat plate structure, and one side of the limiting fixing plate 3 close to the U-shaped base 1 is provided with two grooves 12 . The groove 12 is provided so that when the limit fixing plate 3 is fixed, the groove 12 can be stuck on the side of the U-shaped base 1. When the bolts of the limit fixing plate 3 are tightened, when the C-shaped steel arm body 2 is loaded, the arm end of the C-shaped steel arm body 2 tends to rotate downward, and the notch of the limit fixing plate is against the side of the U-shaped base, so that it cannot rotate, thereby preventing the C-shaped steel arm body 2 from rotating. The other end of the limit fixing plate 3 is a U-shaped structure, and one end of the limit fixing plate 3 is provided with a U-shaped structure, which can enable the limit fixing plate 3 to be installed on the C-shaped steel arm body 2. The protruding two sides of the U-shaped structure of the limit fixing plate 3 are located on both sides of the C-shaped steel arm body 2. When the limit fixing plate 3 moves, it is convenient for the limit fixing plate 3 to move along the direction of the C-shaped steel arm body 2. Two mounting holes 8 are provided at the bottom of the U-shaped structure of the limit fixing plate 3, and the mounting holes 8 are provided to facilitate the installation of bolts, so that the limit fixing plate 3 is connected to the toothed nut 4.

[0023] Furthermore, the plastic skeleton 5 includes a mounting plate 51 and a cylindrical fixing block 52 installed on the mounting plate 51. A rectangular hole 53 matching the toothed nut 4 is opened on the side of the cylindrical fixing block 52. The toothed nut 4 is installed on the cylindrical fixing block 52 of the plastic skeleton 5 through the rectangular hole 53. A circular hole three 13 is opened in the middle of the bottom surface of the plastic skeleton 5. A threaded hole 14 is opened in the middle of one side of the toothed nut 4 close to the bottom of the C-shaped steel arm body 2, and the threaded hole 14 is located between the two rows of teeth 7. The circular hole three 13 is matched with the threaded hole 14 for connecting with the bolts of the limiting fixing plate 3.

[0024] When in use, when installing the C-shaped steel arm body 2, first install the two toothed nuts 4 on the plastic frame 5, and then install the two toothed nuts 4 together with the plastic frame 5 in the C-shaped steel arm body 2, adjust the position, and then install the limiting fixing plate 3, so that the bolts pass through the mounting holes 8 and the threaded holes 14 of the round holes 3 13 to install the toothed nuts 4, and the two bolts do not tighten them first, and then push the limiting fixing plate 3 to move the limiting fixing plate 3 along the direction of the C-shaped steel arm body 2, adjust the position, turn the opening of the C-shaped steel arm body 2 downward, and install the C-shaped steel arm body 2 on the U-shaped base 1 through a pin shaft or bolts, so that the C-shaped steel arm body 2 rotates around the U-shaped base 1, and then fix the U-shaped base 1 on the supporting surface through the oblong hole 9, such as fixing the base on the arc-shaped inner wall of the pipe gallery with anchor bolts, and then adjust the angle of the C-shaped steel arm body 2, and then push the limiting fixing plate 3 to make the groove 12 stuck on the side of the U-shaped base 1, and then tighten all bolts and other fasteners. Since the limit fixing plate 3 is engaged with the teeth 6 of the C-shaped steel arm 2 through the toothed nut 4, rather than being locked by friction, the limit fixing plate 3 will not loosen. The dense teeth 6 can be set on the C-shaped steel arm 2 to achieve relatively fine adjustments, so that the C-shaped steel arm 2 can be adjusted to any angle. When a load is added to the C-shaped steel arm 2, the arm end of the C-shaped steel arm 2 tends to rotate downward, and the groove 12 of the limit fixing plate 3 is pressed against the U-shaped base, so that it cannot rotate and is firmly fixed.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support arm with an adjustable angle, comprising a U-shaped base (1), a C-shaped steel arm body (2) and a limit fixing plate (3), characterized in that: One end of the C-shaped steel arm body (2) is rotatably connected to the U-shaped base (1); the upper end of the inner side of the C-shaped steel arm body (2) is provided with uniformly distributed teeth one (6); two toothed nuts (4) are arranged in the inner cavity of the C-shaped steel arm body (2); a plastic frame (5) is installed at the lower end of the C-shaped steel arm body (2); two toothed nuts (4) are installed in the inner cavity of the C-shaped steel arm body (2) through the plastic frame (5); and two rows of teeth two (7) matching with teeth one (6) are provided on one side of the toothed nut (4) close to the bottom of the C-shaped steel arm body (2); and the limit fixing plate (3) is connected to the toothed nuts (4) and the plastic frame (5) by bolts.

2. The support arm with adjustable angle according to claim 1, characterized in that: The bottom surface of the U-shaped base (1) is provided with two oblong holes (9), the two side surfaces of the U-shaped base (1) are provided with symmetrical circular holes one (10), and the two side surfaces of one end of the C-shaped steel arm body (2) are provided with symmetrical circular holes two (11).

3. The support arm with adjustable angle according to claim 1, characterized in that: The end of the limiting fixing plate (3) close to the U-shaped base (1) is a flat plate structure, and two grooves (12) are provided on one side of the limiting fixing plate (3) close to the U-shaped base (1); the other end of the limiting fixing plate (3) is a U-shaped structure, and two mounting holes (8) are provided at the bottom of the U-shaped structure of the limiting fixing plate (3).

4. The support arm with adjustable angle according to claim 1, characterized in that: The plastic frame (5) comprises a mounting plate (51) and a cylindrical fixing block (52) mounted on the mounting plate (51); a rectangular hole (53) matching the toothed nut (4) is provided on the side surface of the cylindrical fixing block (52); and a circular hole three (13) is provided in the middle of the bottom surface of the plastic frame (5).

5. The support arm with adjustable angle according to claim 1, characterized in that: A threaded hole (14) is provided in the middle of one side of the toothed nut (4) close to the bottom of the C-shaped steel arm body (2), and the threaded hole (14) is located between two rows of teeth (7).

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