Positioning clip

Abstract

The utility model discloses a kind of positioning wire clamps, including first pressing plate, second pressing plate, at least one non-circular first through-hole is respectively provided on the first pressing plate and the second pressing plate;At least one expansion piece, the expansion piece includes cap and internal thread sleeve, the cap is fixedly connected with the internal thread sleeve, the cap is resisted on the first pressing plate;The shape of the internal thread sleeve is compatible with the shape of the first through-hole, and the internal thread sleeve is respectively threaded the first through-hole, and forms protruding portion on the second pressing plate, to fix the first pressing plate and the second pressing plate together. Therefore, assembly operation is simple, assembly cost is low, assembly efficiency is high, and safety hidden danger brought by nut loosening can be avoided, the fixed effect to contact wire is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrified railway catenary technology, and in particular to a positioning clamp. Background Technology

[0002] Positioning clamps are one of the key components in the flexible contact wire system of electrified railways, used to connect and fix the contact wire.

[0003] The positioning clamps in related technologies generally rely on a combination of bolts, nuts and locking washers to fasten the left and right pressure plates. The assembly operation is cumbersome, the assembly cost is high and the assembly efficiency is low. Moreover, after long-term use, the nuts may loosen and cause safety hazards, affecting the fixing effect on the contact wire. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, one objective of this utility model is to provide a positioning clamp that is simple to assemble, has low assembly cost, high assembly efficiency, and can avoid the safety hazards caused by loose nuts, thus ensuring the fixing effect on the contact wire.

[0006] To achieve the above objectives, this utility model proposes a positioning wire clamp, comprising:

[0007] A first pressure plate and a second pressure plate, wherein at least one non-circular first through hole is provided on the first pressure plate and the second pressure plate respectively;

[0008] At least one expansion member, the expansion member comprising a cap and an internally threaded sleeve, the cap being fixedly connected to the internally threaded sleeve, and the cap abutting against the first pressure plate;

[0009] The shape of the internally threaded sleeve is adapted to the shape of the first through hole, and the internally threaded sleeve passes through the first through hole and forms a protrusion on the second pressure plate to fix the first pressure plate and the second pressure plate together.

[0010] In addition, the positioning clamp proposed in the application may also have the following additional technical features:

[0011] Specifically, the protrusion is a portion that protrudes from the internal threaded sleeve due to the extrusion and deformation caused by the pulling of a rivet gun.

[0012] Specifically, the first pressure plate has a first groove, and the shape of the first groove is adapted to the contact wire.

[0013] Specifically, a second groove is provided on the second pressure plate. The shape of the second groove is adapted to the shape of the contact wire, and the second groove is arranged opposite to the first groove when the first pressure plate and the second pressure plate are fixed.

[0014] Specifically, the first groove and the second groove are respectively provided with a plurality of equidistantly arranged extrusion teeth.

[0015] Specifically, a limiting part is integrally formed on the first pressure plate, and a second through hole for the pin to pass through is provided on the limiting part, and an arc groove is provided on the first pressure plate.

[0016] The second pressure plate has a groove and a U-shaped ring.

[0017] When the first pressure plate and the second pressure plate are fixed, the groove and the arc-shaped groove are arranged opposite to each other to form a receiving cavity for accommodating the pin. The U-shaped ring is engaged between the receiving cavity and the limiting part to restrict the pin in the receiving cavity.

[0018] Specifically, the second pressure plate has an avoidance notch, and when the first pressure plate and the second pressure plate are fixed, the limiting part is engaged in the avoidance notch.

[0019] Specifically, the first pressure plate is provided with a first protrusion, and the second pressure plate is provided with a second protrusion. When the first pressure plate and the second pressure plate are fixed, the first protrusion and the second protrusion abut against each other.

[0020] Specifically, a limiting groove is provided on the first protrusion, and a limiting block is provided on the second protrusion. The limiting groove and the limiting block are adapted to each other in shape, and the limiting block is inserted into the limiting groove when the first pressure plate and the second pressure plate are fixed.

[0021] Specifically, the number of the first through holes is the same as the number of the expansion members.

[0022] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0023] (1) The expansion component can quickly fix the first and second pressure plates. At the same time, the expansion component replaces multiple accessories such as bolts, nuts and locking washers, which not only reduces costs, but also makes the assembly operation simpler and improves assembly efficiency. In addition, the use of nuts is avoided, thus completely eliminating the safety hazards caused by loose nuts.

[0024] (2) By adapting the shape of the internal threaded sleeve to the shape of the first through hole, the shape of the first through hole can be used to limit the internal threaded sleeve, which in turn allows the internal threaded sleeve to limit the first pressure plate and the second pressure plate, thus preventing the torque generated by the rotation of the first pressure plate and the second pressure plate from squeezing and damaging the contact wire. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the positioning clamp according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the expansion member after riveting according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the first pressure plate according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the second pressure plate according to an embodiment of the present invention.

[0031] As shown in the figure:

[0032] 1. First pressure plate; 10. First through hole; 11. First groove; 12. Limiting part; 13. Arc groove; 14. First boss; 110. Extrusion tooth; 120. Second through hole; 140. Limiting groove;

[0033] 2. Second pressure plate; 21. Second groove; 22. Groove; 23. U-shaped ring; 24. Clearance notch; 25. Second boss; 26. Limiting block;

[0034] 3. Expansion part; 30. Cap; 31. Internal threaded sleeve; 310. Protrusion;

[0035] 4. Receiving cavity. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0038] The positioning clamp of the present invention will now be described with reference to the accompanying drawings.

[0039] The positioning clamp provided in this embodiment of the utility model can be applied to the flexible contact network of electrified railways to fix the contact wire.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the positioning clamp of this utility model embodiment may include a first pressure plate 1, a second pressure plate 2, and at least one expansion member 3.

[0041] The first pressure plate 1 and the second pressure plate 2 are respectively provided with at least one non-circular first through hole 10. It can be understood that the non-circular first through hole 10 can be irregular or polygonal, such as triangular, quadrilateral, pentagonal, hexagonal and other shapes.

[0042] At least one expansion member 3 is provided. The expansion member 3 includes a cap 30 and an internally threaded sleeve 31. The cap 30 is fixedly connected to the internally threaded sleeve 31. The cap 30 abuts against the first pressure plate 1. The expansion member 3 can be one, two, three, etc., and can be set according to the actual situation, for example, referring to... Figure 1 There are two expansion components 3.

[0043] It should be noted that the internally threaded sleeve 31 has internal threads inside the sleeve to facilitate threaded connection with the external rivet gun, thereby improving the convenience of operation.

[0044] The shape of the internal threaded sleeve 31 is adapted to the shape of the first through hole 10. The above design can limit the internal threaded sleeve 31 by using the shape of the first through hole 10, which means that the internal threaded sleeve 31 can limit the first pressure plate 1 and the second pressure plate 2. Compared with the bolt-fitted round hole design in the prior art, it can better avoid the torque generated by the rotation of the first pressure plate 1 and the second pressure plate 2 from squeezing and damaging the contact wire.

[0045] For example, refer to Figure 2 and Figure 3As shown, the internal threaded sleeve 31 is hexagonal in shape, and the first through hole 10 is also hexagonal in shape. When the internal threaded sleeve 31 is inserted into the first through hole 10, the internal threaded sleeve 31 and the first through hole 10 form a mutual limiting relationship.

[0046] Furthermore, the number of first through holes 10 is the same as the number of expansion members 3, thereby improving the stability of the first pressure plate 1 and the second pressure plate 2 after the expansion members 3 are assembled with the first through holes 10.

[0047] The internal threaded sleeve 31 is respectively passed through the first through hole 10, and a protrusion 310 is formed on the second pressure plate 2 to fix the first pressure plate 1 and the second pressure plate 2 together. It should be noted that the protrusion 310 is the part that protrudes from the internal threaded sleeve 31 due to the extrusion and deformation caused by the pulling of the rivet gun.

[0048] Specifically, when assembling the positioning clamp of this utility model, the second pressure plate 2 is first stacked on the first pressure plate 1. Then, the cap 30 of the expansion member 3 is abutted against the side of the first pressure plate 1 away from the second pressure plate 2, and the internal threaded sleeve 31 is respectively passed through the two corresponding first through holes 10. Then, the internal threaded sleeve 31 is threadedly connected to the rivet gun, and the rivet gun is controlled to pull and force the end of the internal threaded sleeve 31 away from the cap 30 to be squeezed and deformed, thereby forming a protrusion 310, so as to quickly fix the first pressure plate 1 and the second pressure plate 2 together.

[0049] Compared to existing technologies, the expansion component 3 replaces multiple accessories such as bolts, nuts, and locking washers, reducing costs and simplifying assembly, thus improving efficiency. It also eliminates the need for nuts, completely removing the safety hazards caused by potential nut loosening. This improvement undoubtedly enhances the securing effect of the positioning clamp on the contact wire, ensuring its stability and reliability in practical applications.

[0050] In one embodiment of this utility model, such as Figure 3 As shown, the first pressure plate 1 has a first groove 11, and the shape of the first groove 11 is adapted to the contact wire, which can ensure that the contact wire is tightly embedded in the first groove 11, thereby enhancing the fixing effect of the first pressure plate 1 on the contact wire, helping to prevent the contact wire from shifting or loosening during use, ensuring the stability and reliability of the electrical connection, and the design of the first groove 11 makes the assembly process simpler. Operators can more easily align the contact wire and put it into the first groove 11 without making complicated adjustments or corrections, thus improving the assembly and fixing efficiency of the contact wire.

[0051] In one embodiment of this utility model, such as Figure 4As shown, a second groove 21 is provided on the second pressure plate 2. The shape of the second groove 21 is adapted to the contact wire, which can ensure that the contact wire is tightly embedded in the second groove 21, thereby enhancing the fixing effect of the second pressure plate 2 on the contact wire and helping to prevent the contact wire from shifting or loosening during use.

[0052] With the first pressure plate 1 and the second pressure plate 2 fixed, the second wire groove 21 is arranged opposite to the first wire groove 11. Before the first pressure plate 1 and the second pressure plate 2 are fixed, the contact wire needs to be inserted between the second wire groove 21 and the first wire groove 11 to limit its movement. After the first pressure plate 1 and the second pressure plate 2 are fixed, the contact wire is fixed between the second wire groove 21 and the first wire groove 11. The second wire groove 21 and the first wire groove 11 increase the contact area between the first pressure plate 1 and the second pressure plate 2 and the contact wire, improving the ability to limit and fix the contact wire. At the same time, it disperses the local stress on the contact wire from the first pressure plate 1 and the second pressure plate 2, preventing excessive local stress from damaging the contact wire structure. Furthermore, operators can more easily insert the contact wire into both the first wire groove 11 and the second wire groove 21 simultaneously without worrying about positional deviations or assembly errors.

[0053] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the first wire groove 11 and the second wire groove 21 are respectively provided with a plurality of equidistantly arranged pressing teeth 110. That is, the above design can increase the friction between the first wire groove 11 and the second wire groove 21 and the contact wire, thereby more effectively fixing the cable and preventing it from loosening or slipping. At the same time, it can further improve the anti-slip performance of the positioning clamp, thereby improving the stability of the positioning clamp when fixing the contact wire.

[0054] In one embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, a limiting part 12 is integrally formed on the first pressure plate 1, and a second through hole 120 for the pin to pass through is provided on the limiting part 12. An arc groove 13 is provided on the first pressure plate 1, and a groove 22 is provided on the second pressure plate 2. A U-shaped ring 23 is provided on the second pressure plate 2. When the first pressure plate 1 and the second pressure plate 2 are fixed, the groove 22 and the arc groove 13 are arranged opposite to each other to form a receiving cavity 4 for accommodating the pin. The U-shaped ring 23 is engaged between the receiving cavity 4 and the limiting part 12 to restrict the pin in the receiving cavity 4.

[0055] It should be noted that in this embodiment, one end of the pin is provided with a tip larger than the diameter of the pin rod, which is existing technology and will not be described in detail here.

[0056] Specifically, before the first pressure plate 1 and the second pressure plate 2 are fixed, the end of the pin is inserted into the arc groove 13, allowing the pin shaft to pass through the second through hole 120. Then, the second pressure plate 2 is stacked on the first pressure plate 1. At this time, the end of the pin is positioned in the receiving cavity 4 formed between the first pressure plate 1 and the second pressure plate 2. Simultaneously, the U-shaped ring 23 is positioned between the receiving cavity 4 and the limiting part 12. The U-shaped ring 23 is also engaged with the pin shaft. In this way, the receiving cavity 4 and the U-shaped ring 23 cover the pin to limit its position. The operation is simple, convenient, and quick, greatly improving the assembly efficiency of this positioning clamp.

[0057] In one embodiment of this utility model, such as Figure 4 As shown, the second pressure plate 2 has an avoidance notch 24. When the first pressure plate 1 and the second pressure plate 2 are fixed, the limiting part 12 is engaged in the avoidance notch 24.

[0058] The avoidance notch 24 allows the first pressure plate 1 and the second pressure plate 2 to fit together more tightly, avoiding unnecessary structural interference and improving the overall compactness of the positioning clamp.

[0059] Meanwhile, after the limiting part 12 engages with the clearance notch 24, the installation process is simplified, making it easier for operators to align and fix the first pressure plate 1 and the second pressure plate 2 during installation, thus reducing installation difficulty and time costs.

[0060] In one embodiment of this utility model, such as Figure 1 , Figure 3 and Figure 4 As shown, a first boss 14 is provided on the first pressure plate 1, and a second boss 25 is provided on the second pressure plate 2. When the first pressure plate 1 and the second pressure plate 2 are fixed, the first boss 14 and the second boss 25 abut against each other.

[0061] The first protrusion 14 and the second protrusion 25 create a gap between the first pressure plate 1 and the second pressure plate 2, providing installation space for the contact wire. After the contact wire is fixed, the first pressure plate 1 and the second pressure plate 2 form a front-end support, while the first protrusion 14 and the second protrusion 25 abut against each other, forming a rear-end support for the first pressure plate 1 and the second pressure plate 2. This prevents the rear ends of the first protrusion 14 and the second protrusion 25 from being suspended, thereby improving the firmness of the first pressure plate 1 and the second pressure plate 2 when fixed, and further improving the reliability and durability of this positioning clamp.

[0062] In one embodiment of this utility model, such as Figure 3 and Figure 4As shown, a limiting groove 140 is provided on the first boss 14, and a limiting block 26 is provided on the second boss 25. The limiting groove 140 and the limiting block 26 are adapted to each other in shape. When the first pressure plate 1 and the second pressure plate 2 are fixed, the limiting block 26 is inserted into the limiting groove 140.

[0063] The tight fit between the limiting groove 140 and the limiting block 26 provides additional stability to the connection between the first pressure plate 1 and the second pressure plate 2. This mechanical locking method effectively prevents relative movement or misalignment between the two when under force, thereby ensuring the stability of the entire positioning clamp structure.

[0064] Meanwhile, the design of the limiting groove 140 and the limiting block 26 makes it easier to align and position the first pressure plate 1 and the second pressure plate 2 during assembly. This not only simplifies the assembly process but also improves the accuracy and efficiency of assembly.

[0065] In summary, the positioning clamp of this utility model embodiment is simple to assemble, has low assembly cost, high assembly efficiency, and can avoid the safety hazards caused by loose nuts, thus ensuring the fixing effect on the contact wire.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning clamp, characterized in that, include: A first pressure plate and a second pressure plate, wherein at least one non-circular first through hole is provided on the first pressure plate and the second pressure plate respectively; At least one expansion member, the expansion member comprising a cap and an internally threaded sleeve, the cap being fixedly connected to the internally threaded sleeve, and the cap abutting against the first pressure plate; The shape of the internally threaded sleeve is adapted to the shape of the first through hole, and the internally threaded sleeve passes through the first through hole and forms a protrusion on the second pressure plate to fix the first pressure plate and the second pressure plate together.

2. The positioning clamp according to claim 1, characterized in that, The protrusion is a portion that protrudes from the internal threaded sleeve due to the extrusion and deformation caused by the pulling of a rivet gun.

3. The positioning clamp according to claim 1, characterized in that, The first pressure plate has a first groove, and the shape of the first groove is adapted to the contact wire.

4. The positioning clamp according to claim 3, characterized in that, The second pressure plate has a second groove, which is adapted to the shape of the contact wire. When the first pressure plate and the second pressure plate are fixed, the second groove is arranged opposite to the first groove.

5. The positioning clamp according to claim 4, characterized in that, The first groove and the second groove are respectively provided with a plurality of equidistantly arranged extrusion teeth.

6. The positioning clamp according to claim 1, characterized in that, The first pressure plate has an integrally formed limiting part, and the limiting part has a second through hole for the pin to pass through. The first pressure plate is provided with an arc groove. The second pressure plate has a groove and a U-shaped ring. When the first pressure plate and the second pressure plate are fixed, the groove and the arc-shaped groove are arranged opposite to each other to form a receiving cavity for accommodating the pin. The U-shaped ring is engaged between the receiving cavity and the limiting part to restrict the pin in the receiving cavity.

7. The positioning clamp according to claim 6, characterized in that, The second pressure plate has an avoidance notch, and when the first pressure plate and the second pressure plate are fixed, the limiting part is engaged in the avoidance notch.

8. The positioning clamp according to claim 1, characterized in that, The first pressure plate is provided with a first protrusion, and the second pressure plate is provided with a second protrusion. When the first pressure plate and the second pressure plate are fixed, the first protrusion and the second protrusion abut against each other.

9. The positioning clamp according to claim 8, characterized in that, A limiting groove is formed on the first protrusion, and a limiting block is provided on the second protrusion. The limiting groove and the limiting block are adapted to each other in shape. When the first pressure plate and the second pressure plate are fixed, the limiting block is inserted into the limiting groove.

10. The positioning clamp according to claim 1, characterized in that, The number of the first through holes is the same as the number of the expansion members.

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