A type of fastening clamp structure

Abstract

This utility model belongs to the technical field of contact wire system and discloses a fastening clamp structure. The first half-clamp includes a first fastening part and a first connecting part. The first connecting part is connected to one side of the length direction of the first fastening part, and the first connecting part has a first through hole through it along the first direction. The second half-clamp includes a second fastening part and a second connecting part. The second connecting part is connected to one side of the length direction of the second fastening part, and the second connecting part has a second through hole through it along the first direction. The first fastening part and the second fastening part cooperate to form a clamping hole. The shank of the bolt passes through the first through hole and the second through hole and is screwed with a nut. By providing an annular positioning groove on the side of the bolt head near the shank, and providing an annular limiting protrusion on one side of the first connecting part or the second connecting part along the first direction, the limiting protrusion is circumferentially limited to the positioning groove. When subjected to vibration, impact and other loads, the connection part is not easy to loosen, thus improving the stability of the overall structure.

Description

Technical Field

[0001] This utility model relates to the field of overhead contact system technology, and in particular to a fastening clamp structure. Background Technology

[0002] Positioning posts are an important component of the overhead contact system. They are mainly used to support and fix the contact suspension system. In electrified railways, the overhead contact system is used to supply power to electric locomotives, and the positioning posts are one of the key components to ensure that the contact wire (or conductor) can maintain the correct position as required by the design.

[0003] In the overhead contact system, the positioning posts need to withstand the stress transmitted from the contact wire for a long time. However, the existing positioning posts are usually fixed with traditional clamps and rivets. The rivets cannot fit tightly against the hole wall, resulting in a large slack in the rivets after installation. When subjected to loads such as vibration and impact, the rivets and clamps are prone to loosening, causing the positioning posts to move radially. Utility Model Content

[0004] The purpose of this utility model is to provide a fastening clamp structure that provides a stable connection and is not prone to loosening.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A fastening clamp structure includes a first half-clamp, a second half-clamp, and a bolt. The first half-clamp includes a first fastening part and a first connecting part. The first connecting part is connected to one side of the first fastening part along its length direction, and the first connecting part has a first through hole extending through it along a first direction. The second half-clamp includes a second fastening part and a second connecting part. The second connecting part is connected to one side of the second fastening part along its length direction, and the second connecting part has a second through hole extending through it along the first direction. The first fastening part and the second fastening part cooperate to form a clamping hole. The shank of the bolt passes through the first through hole and the second through hole and is screwed with a nut. The head of the bolt has an annular positioning groove on the side near the shank. The first connecting part or the second connecting part has an annular limiting protrusion on one side along the first direction, and the limiting protrusion is circumferentially limited by the positioning groove.

[0007] Preferably, the fastening clamp structure further includes a fastener, which includes a first annular platform and a second annular platform coaxially connected. The diameter of the second annular platform is smaller than that of the first annular platform. The first annular platform is sandwiched between the nut and the first connecting part or the second connecting part. The second annular platform is provided with a plurality of anti-loosening teeth at intervals along its circumference. The anti-loosening teeth are deformed by compression and at least partially extend into the first through hole or the second through hole.

[0008] Preferably, the second annular platform is provided with a plurality of perforations spaced apart along its circumference, and anti-loosening rings are fitted into the perforations. The anti-loosening rings are staggered with the anti-loosening teeth, and the anti-loosening rings are deformed by compression and at least partially extend into the first through hole or the second through hole.

[0009] Preferably, the first connecting portion includes two spaced-apart first connecting teeth, each of which passes through the first through hole along the first direction.

[0010] Preferably, the second connecting portion includes two spaced-apart second connecting teeth, each of which has a second through hole extending through it along the first direction, and the first connecting teeth and the second connecting teeth are staggered.

[0011] Preferably, the spacing between the two second connecting teeth is the same as the spacing between the two first connecting teeth.

[0012] Preferably, the first half-hoop further includes a first extrusion part, which is connected to the other side of the length direction of the first fastening part, and the first extrusion part is provided with a first through hole along the second direction. The second half-hoop further includes a second extrusion part, which is connected to the other side of the length direction of the second fastening part, and the second extrusion part is provided with a second through hole along the second direction. The projection of the first through hole coincides with the projection of the second through hole, and the first direction, the second direction and the length direction of the second fastening part are perpendicular to each other.

[0013] Preferably, the first extrusion part is provided with at least two first perforations spaced apart along the second direction, and the second extrusion part is provided with at least two second perforations spaced apart along the second direction, with the first perforations and the second perforations corresponding one-to-one.

[0014] Preferably, the first half-hoop, the second half-hoop, the bolt, and the nut are all made of aluminum.

[0015] Preferably, both the anti-loosening teeth and the anti-loosening ring are made of stainless steel.

[0016] The beneficial effects of this utility model are:

[0017] This utility model provides a fastening clamp structure, including a first half-clamp, a second half-clamp, and a bolt. The first half-clamp includes a first fastening part and a first connecting part. The first connecting part is connected to one side of the first fastening part along its length direction, and a first through hole is formed through the first connecting part along a first direction. The second half-clamp includes a second fastening part and a second connecting part. The second connecting part is connected to one side of the second fastening part along its length direction, and a second through hole is formed through the second connecting part along the first direction. The first fastening part and the second fastening part cooperate to form a clamping hole. The shank of the bolt passes through the first through hole and the second through hole and is screwed with a nut. By providing an annular positioning groove on the side of the bolt head near the shank, and providing an annular limiting protrusion on one side of the first connecting part or the second connecting part along the first direction, the limiting protrusion is circumferentially limited to the positioning groove. When subjected to loads such as vibration and impact, the connection part is not easy to loosen, reducing the circumferential displacement of the bolt and improving the stability of the overall structure. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a fastening clamp structure provided in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of a fastening clamp structure (without bolts) provided in an embodiment of this utility model. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of a fastening clamp structure (without bolts) provided in an embodiment of this utility model. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the structure of the first half-hoop provided in this embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the second half-hoop provided in this embodiment of the utility model;

[0023] Figure 6 This is an assembly diagram of bolts, nuts and fasteners provided in an embodiment of this utility model;

[0024] Figure 7 This is a structural schematic diagram of the fastener provided in an embodiment of the present utility model.

[0025] In the picture:

[0026] 1. First half-hoop; 11. First fastening part; 12. First connecting part; 121. First connecting tooth; 120. First through hole; 13. First pressing part; 131. First perforation; 2. Second half-hoop; 21. Second fastening part; 22. Second connecting part; 221. Second connecting tooth; 220. Second through hole; 23. Second pressing part; 231. Second perforation; 3. Bolt; 31. Positioning groove; 4. Limiting protrusion; 5. Fastener; 51. First annular platform; 52. Second annular platform; 53. Anti-loosening tooth; 54. Anti-loosening ring. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] This embodiment provides a fastening clamp structure for fastening and installing positioning columns. When subjected to loads such as vibration and impact, the connection is not easily loosened, ensuring the stability of the connection, extending the service life, and is suitable for various complex working conditions.

[0032] Please see Figures 1 to 7 The fastening clamp structure provided in this embodiment includes a first half clamp 1, a second half clamp 2 and a bolt 3, wherein the first half clamp 1 and the second half clamp 2 are rotatably connected by the bolt 3, and the positioning column is fastened in the clamping hole formed by the first half clamp 1 and the second half clamp 2.

[0033] Specifically, please refer to Figures 1 to 5 The first half-hoop 1 includes a first fastening part 11 and a first connecting part 12. The first connecting part 12 is connected to one side of the first fastening part 11 along its length direction, and the first connecting part 12 has a first through hole 120 through it along the first direction. The second half-hoop 2 includes a second fastening part 21 and a second connecting part 22. The second connecting part 22 is connected to one side of the second fastening part 21 along its length direction, and the second connecting part 22 has a second through hole 220 through it along the first direction. The first fastening part 11 and the second fastening part 21 cooperate to form a retaining hole. The shank of the bolt 3 passes through the first through hole 120 and the second through hole 220 and is screwed with a nut, thereby realizing the rotational connection between the first half-hoop 1 and the second half-hoop 2.

[0034] Preferably, please refer to Figure 4 The first connecting portion 12 includes two spaced-apart first connecting teeth 121, wherein each first connecting tooth 121 penetrates a first through hole 120 along a first direction; further preferably, please refer to Figure 5 The second connecting part 22 includes two spaced second connecting teeth 221. Each second connecting tooth 221 has a second through hole 220 through it along the first direction. The first connecting teeth 121 and the second connecting teeth 221 are arranged alternately. The shank of the bolt 3 passes through the first through hole 120 and the second through hole 220 in sequence and then screws the nut in, which further improves the stability of the rotational connection between the first half hoop 1 and the second half hoop 2.

[0035] In this embodiment, the spacing between the two second connecting teeth 221 is the same as the spacing between the two first connecting teeth 121, so as to prevent the bolt 3 from loosening between the first connecting teeth 121 and the second connecting teeth 221 when subjected to vibration, impact and other loads due to the loose fit between the first connecting teeth 121 and the second connecting teeth 221.

[0036] Further, please refer to Figures 3 to 6In this embodiment, a circumferential positioning groove 31 is provided on the side of the bolt 3 near the shank, and a circumferential limiting protrusion 4 is adaptedly provided on one side of the first connecting part 12 or the second connecting part 22 along the first direction. After the shank of the bolt 3 passes through the first through hole 120 and the second through hole 220 in sequence, the limiting protrusion 4 of the bolt 3 head is circumferentially limited in the positioning groove 31. Through the above arrangement, on the one hand, the bolt 3 can be quickly positioned, and on the other hand, the circumferential displacement of the bolt 3 can be reduced, thereby improving the stability of the overall structure.

[0037] Furthermore, please refer to Figure 1 , Figure 6 and Figure 7 The fastening clamp structure provided in this embodiment also includes a fastener 5. The fastener 5 includes a first annular platform 51 and a second annular platform 52, which are coaxially connected. The diameter of the second annular platform 52 is smaller than that of the first annular platform 51. The second annular platform 52 is provided with a plurality of anti-loosening teeth 53 spaced apart along its circumference. After the shank of the bolt 3 passes through the first through hole 120 and the second through hole 220 in a staggered manner, as the nut is gradually screwed onto the bolt, the first annular platform 51 is sandwiched between the nut and the first connecting part 12 or the second connecting part 22. The anti-loosening teeth 53 contact and are deformed by compression with the end face of the second connecting part 22 or the first connecting part 12, causing at least a portion of the anti-loosening teeth 53 to extend into the first through hole 120 or the second through hole 220, thereby further preventing loosening of the connection and improving the stability of the overall structure.

[0038] Optionally, the second annular platform 52 is provided with a number of through holes spaced apart along its circumference, and each through hole is fitted with an anti-loosening ring 54. The number of anti-loosening rings 54 and the number of anti-loosening teeth 53 are arranged alternately. As the nut is gradually screwed onto the screw, the anti-loosening ring 54 also contacts and is squeezed and deformed with the end face of the second connecting part 22 or the first connecting part 12. At least part of the anti-loosening ring 54 extends into the first through hole 120 or the second through hole 220, further preventing the connection part from loosening and improving the stability of the overall structure.

[0039] It should be noted that the first half-clamp 1, the second half-clamp 2, the bolt 3, and the nut are all made of aluminum, while the anti-loosening teeth 53 and the anti-loosening ring 54 are made of stainless steel. As the nut is gradually screwed onto the bolt, the anti-loosening teeth 53 and the anti-loosening ring 54 gradually contact the end face of the second connecting part 22 or the first connecting part 12. The stainless steel anti-loosening teeth 53 and the anti-loosening ring 54 press out indentations on the aluminum first half-clamp 1 and the second half-clamp 2, thereby providing additional friction and indirectly improving the connection strength between the bolt 3 and the first half-clamp 1 and the second half-clamp 2, preventing the nut from loosening.

[0040] After placing the positioning post into the retaining hole formed by the first half-hoop 1 and the second half-hoop 2, it is necessary to close and tighten the first half-hoop 1 and the second half-hoop 2. Please refer to [link / reference]. Figure 1 , Figure 4 and Figure 5 Therefore, the first half-hoop 1 provided in this embodiment also includes a first pressing part 13. The first pressing part 13 is connected to the other side of the length direction of the first fastening part 11, and the first pressing part 13 is provided with a first through hole 131 through the second direction. Similarly, the second half-hoop 2 also includes a second pressing part 23. The second pressing part 23 is connected to the other side of the length direction of the second fastening part 21, and the second pressing part 23 is provided with a second through hole 231 through the second direction. The projection of the first through hole 131 coincides with the projection of the second through hole 231. After the positioning column is placed in the clamping hole formed by the first half-hoop 1 and the second half-hoop 2, the bolt is passed through the first through hole 131 and the second through hole 231 in sequence and screwed by the nut, thereby closing the first half-hoop 1 and the second half-hoop 2 and completing the fastening of the positioning column.

[0041] Preferably, the first direction, the second direction, and the length direction of the second fastening part 21 are perpendicular to each other, thereby ensuring that the first clamp and the second clamp can provide all-round fastening force for the positioning column and ensure the fastening strength of the positioning column.

[0042] Optionally, the first extrusion part 13 is provided with at least two first through holes 131 spaced apart along the second direction, and the second extrusion part 23 is provided with at least two second through holes 231 spaced apart along the second direction, with the first through holes 131 and the second through holes 231 corresponding one-to-one, so as to improve the closing strength of the first half hoop 1 and the second half hoop 2 and ensure the fastening stability of the positioning column.

[0043] In this embodiment, an annular positioning groove 31 is provided on the side of the head of the bolt 3 near the shank, and an annular limiting protrusion 4 is adapted to be provided on one side of the first connecting part 12 or the second connecting part 22 along the first direction. This allows the limiting protrusion 4 of the head of the bolt 3 to be circumferentially limited in the positioning groove 31. On the one hand, this enables the bolt 3 to be quickly positioned, and on the other hand, it prevents the connection from loosening when subjected to loads such as vibration and impact, reducing the circumferential displacement of the bolt 3 and improving the stability of the overall structure.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fastening clamp structure, characterized in that, The assembly includes a first half-hoop (1), a second half-hoop (2), and a bolt (3). The first half-hoop (1) includes a first fastening part (11) and a first connecting part (12). The first connecting part (12) is connected to one side of the first fastening part (11) along its length direction, and the first connecting part (12) has a first through hole (120) extending through it along a first direction. The second half-hoop (2) includes a second fastening part (21) and a second connecting part (22). The second connecting part (22) is connected to one side of the second fastening part (21) along its length direction, and the second connecting part (22) has a first through hole (120) extending through it along a first direction. 2) A second through hole (220) is opened along the first direction. The first fastening part (11) and the second fastening part (21) cooperate to form a retaining hole. The shank of the bolt (3) passes through the first through hole (120) and the second through hole (220) and is screwed with a nut. The head of the bolt (3) is provided with an annular positioning groove (31) on the side near the shank. The first connecting part (12) or the second connecting part (22) is provided with an annular limiting protrusion (4) on one side along the first direction. The limiting protrusion (4) is circumferentially limited in the positioning groove (31).

2. The fastening clamp structure according to claim 1, characterized in that, The fastening clamp structure further includes a fastener (5), which includes a first annular platform (51) and a second annular platform (52) coaxially connected. The diameter of the second annular platform (52) is smaller than that of the first annular platform (51). The first annular platform (51) is sandwiched between the nut and the first connecting part (12) or the second connecting part (22). The second annular platform (52) is provided with a plurality of anti-loosening teeth (53) spaced apart along its circumference. The anti-loosening teeth (53) are deformed by compression and at least partially extend into the first through hole (120) or the second through hole (220).

3. The fastening clamp structure according to claim 2, characterized in that, The second annular platform (52) is provided with a plurality of perforations at intervals along its circumference. Anti-loosening rings (54) are fitted into the perforations. The anti-loosening rings (54) and the anti-loosening teeth (53) are arranged alternately. The anti-loosening rings (54) are deformed by compression and at least part of them extend into the first through hole (120) or the second through hole (220).

4. The fastening clamp structure according to claim 1, characterized in that, The first connecting part (12) includes two spaced first connecting teeth (121), each of which passes through the first through hole (120) along the first direction.

5. A fastening clamp structure according to claim 4, characterized in that, The second connecting part (22) includes two spaced second connecting teeth (221), each of which has a second through hole (220) through it along the first direction, and the first connecting teeth (121) and the second connecting teeth (221) are staggered.

6. A fastening clamp structure according to claim 5, characterized in that, The spacing between the two second connecting teeth (221) is the same as the spacing between the two first connecting teeth (121).

7. A fastening clamp structure according to claim 1, characterized in that, The first half-hoop (1) further includes a first extrusion part (13), which is connected to the other side of the length direction of the first fastening part (11), and the first extrusion part (13) is provided with a first through hole (131) through the second direction. The second half-hoop (2) further includes a second extrusion part (23), which is connected to the other side of the length direction of the second fastening part (21), and the second extrusion part (23) is provided with a second through hole (231) through the second direction. The projection of the first through hole (131) coincides with the projection of the second through hole (231), and the first direction, the second direction and the length direction of the second fastening part (21) are perpendicular to each other.

8. A fastening clamp structure according to claim 7, characterized in that, The first extrusion part (13) is provided with at least two first perforations (131) spaced apart along the second direction, and the second extrusion part (23) is provided with at least two second perforations (231) spaced apart along the second direction, and the first perforations (131) and the second perforations (231) correspond one-to-one.

9. A fastening clamp structure according to any one of claims 1-8, characterized in that, The first half-hoop (1), the second half-hoop (2), the bolt (3) and the nut are all made of aluminum.

10. A fastening clamp structure according to claim 3, characterized in that, Both the anti-loosening tooth (53) and the anti-loosening ring (54) are made of stainless steel.

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