U-shaped bolt

Abstract

The utility model discloses a U-shaped bolt which comprises a U-shaped bolt body, two sets of threaded parts are arranged on the U-shaped bolt body, a plurality of nuts are connected to the outer sides of the two sets of threaded parts in a threaded mode, through holes are formed in the two sets of threaded parts, cotter pins are arranged at the through holes in a penetrating mode, bottom pads are arranged on the outer sides of the two sets of threaded parts in a sleeved mode, and the bottom pads are located between the nuts and the cotter pins. A rotating hole is formed in the center of the top of the blocking cover, a connecting shaft is rotationally installed at the rotating hole, a rotary knob is connected to the top of the connecting shaft, a sleeve is connected to the bottom of the connecting shaft, internal threads are arranged on the inner side wall of the sleeve, and the sleeve is in threaded connection with the threaded parts through the internal threads. The cotter pin can be shielded through the shielding cover and the bottom pad, the situation that the cotter pin is affected by the external environment, so that the cotter pin is aged and fractured, the anti-loosening effect on the nut is lost is avoided, and the service life of the cotter pin is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power fittings technology, specifically a U-shaped bolt. Background Technology

[0002] U-bolts are U-shaped fittings that connect to towers, consisting of a hanging ring and a threaded rod at each end. They are fixed to the tower crossarm by bolt connection, simplifying the crossarm structure and creating a flexible turning point. The other end is connected in series with the insulator via a ring connection.

[0003] Existing U-bolts are usually fitted with cotter pins to prevent the nuts from loosening. However, the cotter pins are exposed to the elements and are prone to aging and breaking under long-term environmental influences such as wind, sun and rain. This causes them to lose their anti-loosening function, leading to the U-bolt falling off and causing serious accidents. Utility Model Content

[0004] The purpose of this invention is to provide a U-bolt to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a U-bolt, comprising a U-bolt body, two sets of threaded portions on the U-bolt body, multiple nuts threadedly connected to the outer sides of the two sets of threaded portions, through holes on the two sets of threaded portions, cotter pins passing through the through holes, a bottom washer fitted on the outer sides of the two sets of threaded portions, the bottom washer being located between the nuts and the cotter pins, a retainer for protecting the cotter pins being installed on the outer sides of the two sets of threaded portions, a rotating hole being formed at the center of the top of the retainer, a connecting shaft being rotatably mounted at the rotating hole, a knob being connected to the top of the connecting shaft, a sleeve being connected to the bottom of the connecting shaft, an internal thread being provided on the inner sidewall of the sleeve, and the sleeve being threadedly connected to the threaded portions through the internal thread.

[0006] As a preferred embodiment of this utility model, a sealing strip is provided on the top edge of the bottom pad, and a groove that matches the sealing strip is provided on the bottom of the cover.

[0007] As a preferred embodiment of this utility model, the bottom of the base pad is provided with a sealing ring.

[0008] As a preferred embodiment of this utility model, a circular groove is formed through the middle of the bottom pad.

[0009] In a preferred embodiment of this utility model, the bottom of the cover is in close contact with the top of the base pad.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the cotter pin can be shielded by the set cover and bottom pad, avoiding the cotter pin from being affected by the external environment, which would cause the cotter pin to age and break, lose its anti-loosening function for the nut, and extend its service life. In addition, the set groove, sealing strip and sealing ring can play a sealing role, preventing external moisture from entering the cover and improving reliability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This utility model Figure 1 Exploded view;

[0013] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0014] Figure 4 This is a schematic diagram of the structure of the baffle and the bottom of the sleeve of this utility model;

[0015] Figure 5 This is a schematic diagram of the structure of the sleeve of this utility model;

[0016] Figure 6 This is a schematic diagram of the structure of the baffle of this utility model;

[0017] Figure 7 This is a schematic diagram of the structure of the base pad of this utility model.

[0018] In the diagram: 1. U-bolt body; 2. Nut; 3. Through hole; 4. Cotter pin; 5. Base washer; 6. Cover; 7. Knob; 8. Sealing strip; 9. Circular groove; 10. Groove; 11. Sleeve; 12. Internal thread; 13. Connecting shaft; 14. Rotary hole; 15. Sealing ring; 16. Threaded part. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 7This utility model provides a technical solution: a U-bolt, including a U-bolt body 1, two sets of threaded portions 16 on the U-bolt body 1, multiple nuts 2 threadedly connected to the outer sides of the two sets of threaded portions 16, through holes 3 on the two sets of threaded portions 16, through which cotter pins 4 pass, and a base washer 5 fitted on the outer side of the two sets of threaded portions 16, located between the nuts 2 and the cotter pins 4. A cover 6 for protecting the cotter pins 4 is also installed on the outer side of the two sets of threaded portions 16. The cover 6 and the base washer 5 shield the cotter pins 4, preventing them from being exposed to external forces. Environmental factors caused the cotter pin 4 to age and break, losing its anti-loosening function for the nut 2. A rotating hole 14 is provided at the center of the top of the cover 6. A connecting shaft 13 is rotatably installed at the rotating hole 14. A knob 7 is connected to the top of the connecting shaft 13, which allows the operator to rotate the sleeve 11. The sleeve 11 is connected to the bottom of the connecting shaft 13. The sleeve 11 is threadedly connected to the threaded part 16, thereby fixing the cover 6 to the outside of the threaded part 16 and preventing the cover 6 from falling off. The inner side wall of the sleeve 11 is provided with an internal thread 12. The sleeve 11 is threadedly connected to the threaded part 16 through the internal thread 12.

[0021] The bottom pad 5 has a sealing strip 8 along its edge at the top, and the bottom of the cover 6 has a groove 10 that matches the sealing strip 8. The sealing strip 8 and the groove 10 work together to seal the bottom pad 5 and the cover 6, thereby improving the sealing performance between them.

[0022] The bottom of the base pad 5 is provided with a sealing ring 15, which is used to seal the space between the base pad 5 and the nut 2 to prevent external moisture from entering the cover 6 through the gap between the base pad 5 and the nut 2.

[0023] The bottom pad 5 has a through groove 9 in the middle, which makes it easy for the bottom pad 5 to be fitted onto the outside of the threaded part 16.

[0024] The bottom of the cover 6 is tightly attached to the top of the base pad 5, so that the sealing strip 8 is inserted into the groove 10, ensuring good sealing between the cover 6 and the base pad 5.

[0025] Specifically, during installation, first, the U-bolt body 1 is passed through the ball head hanging ring on the insulator string and then connected to the tower. Multiple nuts 2 are screwed onto the outside of the threaded part 16 to achieve connection and fixation with the tower. Then, the bottom pad 5 is placed on the outside of the threaded part 16 until the bottom pad 5 is blocked by the nut 2. Next, the cotter pin 4 is inserted into the through hole 3. At this time, the bottom pad 5 is blocked by the cotter pin 4 and cannot move upward. Finally, the cover 6 is placed on the outside of the threaded part 16. The knob 7 is turned, and the knob 7 causes the sleeve 11 to rotate through the connecting shaft 13. The sleeve 11 is screwed onto the outside of the threaded part 16 and gradually moves downward. The sleeve 11 drives the cover 6 to move downward until the cover 6 is tightly pressed against the bottom pad 5 and cannot move. The installation is then complete. At this time, the bottom pad 5 and the nut 2 cooperate to squeeze the sealing ring 15, and the sealing strip 8 enters the groove 10 to achieve a good sealing effect, preventing external moisture from entering the cover 6, thereby protecting the cotter pin 4 and preventing the cotter pin 4 from aging and breaking due to the external environment.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A U-bolt, comprising a U-bolt body (1), wherein the U-bolt body (1) is provided with two sets of threaded portions (16), and multiple nuts (2) are threadedly connected to the outer sides of the two sets of threaded portions (16), and through holes (3) are provided on the two sets of threaded portions (16), wherein cotter pins (4) are inserted through the through holes (3), characterized in that: The outer side of the two groups of threaded parts (16) is sleeved with a bottom pad (5) located between the nut (2) and the cotter pin (4), and the outer side of the two groups of threaded parts (16) is further provided with a cover (6) for protecting the cotter pin (4), a rotating hole (14) is formed in the center of the top of the cover (6), a connecting shaft (13) is rotatably connected to the rotating hole (14), a knob (7) is connected to the top of the connecting shaft (13), and a sleeve (11) is connected to the bottom of the connecting shaft (13), the inner side wall of the sleeve (11) is provided with an internal thread (12), and the sleeve (11) is threadedly connected to the threaded part (16) through the internal thread (12).

2. A U-bolt according to claim 1, wherein: The top of the bottom pad (5) is provided with a sealing strip (8) along the edge, and the bottom of the cover (6) is provided with a groove (10) matched with the sealing strip (8).

3. A U-bolt according to claim 1, wherein: The bottom of the bottom pad (5) is provided with a sealing ring (15).

4. A U-bolt according to claim 1, wherein: A circular groove (9) is formed in the middle of the bottom pad (5).

5. A U-bolt according to claim 1 wherein: The bottom of the cover (6) is tightly attached to the top of the bottom pad (5).

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