Positioning wire clamp for overhead line system of electrified railway

Abstract

The utility model provides a positioning wire clamp for an overhead line system of an electrified railway. The positioning wire clamp is characterized by comprising a wire clamp body and a clamping mechanism which are of a symmetrical structure. The wire clamp body is of an isosceles triangle structure composed of two symmetrical wing plates and a bottom plate, the two wing plates and the bottom plate are connected through a web plate, a penetrating threaded hole is formed in the middle of the web plate, and an adjusting screw rod is arranged in the penetrating threaded hole to achieve adjustment of clamping force. The clamping mechanism is composed of a fixing seat and a pawl and is symmetrically arranged on two sides of the wire clamp body, a cavity is arranged in the fixing seat, one end of the fixing seat is hinged with the pawl, and a plurality of continuous ratchets are arranged outside the pawl. The fixing device is stable in structure, convenient to adjust and capable of effectively improving the fixing efficiency and safety of the overhead line system wire.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of a support structure of a contact net or wire for a railway track, in particular to a positioning clamp for a contact net of an electrified railway. BACKGROUND

[0002] In an existing electrified railway system, the contact net is a key facility for providing electric energy for a train, and the stability of the contact net has a vital influence on the running safety and efficiency of the train. In a traditional method, a positioning clamp for the contact net usually adopts a fixed clamp to fix a contact wire, but the method has certain defects. Specifically, the method has problems of easy displacement, easy damage and high maintenance cost. The defects not only affect the normal operation of the contact net, but also can cause a safety hazard in the running process of the train. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a positioning clamp for a contact net of an electrified railway to solve the above problems, realize quick and accurate fixing, reduce workload, improve work efficiency and reduce operation difficulty. In order to achieve the above object, the application provides the following technical scheme: a positioning clamp for a contact net of an electrified railway, comprising:

[0004] A clamp body has a symmetrical structure, has two symmetrical wing plates and a bottom plate, forms an isosceles triangle structure, the middle of the wing plate and the bottom plate is connected through a web plate, and a through threaded hole is arranged in the middle of the web plate. An adjusting screw is arranged in the threaded hole.

[0005] A clamping mechanism is symmetrically arranged on both sides of the clamp body, which is composed of a fixed seat and a pawl. The fixed seat has a cavity inside. One end of the fixed seat is hinged with the pawl. A plurality of continuous ratchets are arranged on the outer side of the pawl. The pawl can pass through the cavity and the fixed seat to form a closed ring. A check claw is hinged on the two side walls of the cavity. A check tooth is arranged at one end of the check claw to limit the retraction of the pawl. Protrusions are arranged on both sides of the end of the check claw. The side wall of the cavity has a groove corresponding to the protrusion. The protrusion is clamped in the groove to limit the rotation of the check claw.

[0006] Preferably, a plurality of clamping mechanisms for clamping the wire body are arranged in parallel on the same side of the clamp body.

[0007] Preferably, the hinge shaft of the check claw is arranged in the middle of the check claw, and a pressing part is arranged at one end of the check claw.

[0008] Preferably, the pressing part is provided with an inner concave arc surface.

[0009] Preferably, the wing plate is provided with a notch corresponding to the cavity, and the notch can accommodate the pawl.

[0010] Preferably, the positioning clamping plate is arranged at the bottom of the bottom plate, and the cross section of the positioning clamping plate is two symmetrical S-shaped arcs.

[0011] Preferably, the surface of the fixing seat opposite to the pawl is an arc surface matched with the wire.

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

[0013] The wire clamp body adopts a symmetrical structure, has two symmetrical wing plates and a bottom plate, forms an isosceles triangle structure, and makes the wire clamp bear force evenly when fixing the overhead contact line. The wing plates and the bottom plate are connected through a web plate in the middle, a through threaded hole is arranged in the middle of the web plate, an adjusting screw is arranged in the threaded hole, and the design not only makes the wire clamp structure more stable, but also facilitates the adjustment of the clamping force of the wire clamp, and ensures the stability and safety of the overhead contact line. The clamping mechanism is symmetrically arranged on both sides of the wire clamp body and is composed of a fixing seat and a pawl. The fixing seat has a cavity inside, one end of the fixing seat is hingedly connected with the pawl, the outer side of the pawl is provided with a plurality of continuous ratchet teeth, the closure of the clamping mechanism is more compact, and the positioning accuracy is improved. The pawl can pass through the cavity and the fixing seat to form a closed ring, the two side walls of the cavity are hingedly connected with a check claw, check teeth for limiting the retraction of the pawl are arranged at one end of the check claw, and protrusions are arranged on both sides of the end of the check claw and correspond to grooves on the side walls of the cavity. The protrusions are clamped in the grooves to limit the rotation of the check claw. This design effectively prevents accidental loosening of the clamping mechanism and further ensures the fixing effect of the overhead contact line. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 A three-dimensional schematic view of the positioning wire clamp for the overhead contact line of the electrified railway is provided in the embodiment of the application.

[0015] Fig. 2 A front view schematic view of the positioning wire clamp for the overhead contact line of the electrified railway is provided in the embodiment of the application.

[0016] In the drawing: 1, wire clamp body; 2, wing plate; 3, bottom plate; 4, web plate; 5, threaded hole; 6, adjusting screw; 7, clamping mechanism; 8, fixing seat; 9, pawl; 10, cavity; 11, check claw; 12, protrusion; 13, groove; 14, pressing part; 15, concave arc surface; 16, notch; 17, positioning clamping plate. DETAILED DESCRIPTION

[0017] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0018] It should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0019] In addition, it should be understood that, for the convenience of description, the sizes of various components shown in the drawings are not drawn in accordance with the actual proportional relationship, for example: the thickness or width of certain layers can be exaggerated relative to other layers.

[0020] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not need to be further specifically discussed and described in the description of subsequent drawings.

[0021] To solve the technical problems in the background art, as shown in Figs. 1-2 The present application provides a technical solution: an electrified railway catenary positioning wire clamp, characterized by:

[0022] The wire clamp body 1 is designed in a symmetrical structure, composed of two symmetrical wing plates 2 and a bottom plate 3, forming an isosceles triangle structure. The wing plates 2 and the bottom plate 3 are connected by a web plate 4, which is located in the middle position and plays a connecting and supporting role. The wing plates 2 are located on both sides of the wire clamp body 1 and are arranged symmetrically to increase the stability and support force of the wire clamp. The bottom plate 3 is located below the wire clamp body 1 and is connected to the wing plate 2 to form a base part. The web plate 4 is located between the wing plate 2 and the bottom plate 3 and is provided with a through threaded hole 5, which plays a connecting and fixing role. The through threaded hole 5 is provided in the middle position of the web plate 4 and is used to install the adjusting screw 6. The clamping mechanism 7 is symmetrically arranged on both sides of the wire clamp body 1 and is composed of a fixed seat 8 and a pawl 9. The fixed seat 8 is located on one side of the clamping mechanism 7 and has a cavity 10 inside for installing and fixing the pawl 9. The pawl 9 is arranged at one end of the fixed seat 8 and can pass through the cavity 10 to form a closed ring with the fixed seat 8. The outer side of the pawl 9 is provided with a plurality of continuous ratchet teeth for enhancing the clamping force. The check claw 11 is located on the two side walls of the cavity 10 and is hinged to the fixed seat 8 for limiting the retraction of the pawl 9. The protrusion 12 is arranged at one end of the check claw 11, and the two sides are provided with recesses 13 corresponding to the protrusions 12 for limiting the rotation of the check claw 11. The recess 13 is located on the side wall of the cavity 10 and corresponds to the protrusion 12 for clamping the protrusion 12 to limit the rotation of the check claw 11.

[0023] It should be noted that a plurality of clamping mechanisms 7 are arranged in parallel on the same side of the wire clamp body 1, and the number of clamping mechanisms 7 to be arranged is determined according to the design requirements of the contact net and the specifications of the contact wire. This usually depends on the tension, weight and required stability of the contact wire. Each clamping mechanism 7 is installed in parallel on the same side of the wire clamp body 1 to ensure uniform spacing between them to provide uniform clamping force and stability. This can be achieved by pre-setting mounting holes or mounting slots on the bottom plate 3 to ensure correct alignment of the clamping mechanism 7.

[0024] Further, the check claw 11 is designed as a two-arm structure with a middle hinge shaft, which allows the check claw 11 to rotate inside the cavity 10 of the fixed seat 8 while maintaining a stable position. A hinge shaft hole is processed in the middle of the check claw 11 for installing a hinge shaft, which allows the check claw 11 to rotate around it. Hinge shafts are installed on the two side walls of the cavity 10 of the fixed seat 8, which will support the middle part of the check claw 11 so that it can swing flexibly. A pressing part 14 is designed and manufactured at one end of the check claw 11, which will be used for pressing to release the locking of the check claw 11 and the pawl 9.

[0025] It is worth noting that the design purpose of the concave arc surface 15 is to provide a contact surface that matches the shape of the finger pad of the operator's finger, which can improve the comfort and accuracy of operation. When the operator needs to adjust the clamping force of the clamping mechanism 7, they can press the finger pad 14 with their fingers, and the concave arc surface 15 can adapt to the shape of the finger, providing a better grip and operation experience.

[0026] It is worth noting that the design purpose of the notch 16 is to provide a space for the pawl 9 to move freely between the fixed seat 8 and the wing plate 2. This design allows the pawl 9 to move smoothly into the wing plate 2 when the clamping mechanism 7 is operated, thereby achieving clamping or releasing of the contact wire. In the design of the wing plate 2, the specific position, size and shape of the notch 16 are determined. The position of the notch 16 should correspond to the cavity 10, and the size and shape should be able to accommodate the pawl 9.

[0027] It is worth noting that the design purpose of the positioning clamp 17 is to provide a structure that can stably fix the contact wire and maintain its correct position in the catenary. The S-shaped cross-section design of the positioning clamp 17 helps to adapt to the profile of the contact wire and provides uniform support, ensuring that the contact wire remains stable at high speeds and under various environmental conditions. The positioning clamp 17 is fixed at the bottom of the bottom plate 3 to ensure its correct position and contact with the contact wire. Welding, bolting or other suitable fixing methods are used to firmly install the positioning clamp 17 to the bottom plate 3.

[0028] It is worth noting that the opposite surface of the fixed seat 8 and the pawl 9 is designed as an arc surface, which is designed to match the circular or elliptical cross-section of the contact wire, ensuring that the clamping mechanism 7 can uniformly and stably clamp the wire, avoiding the wire from slipping or being damaged during clamping.

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

Claims

1. A positioning clamp for the overhead contact line of an electrified railway, characterized in that, include: The wire clamp body (1) has a symmetrical structure, with two symmetrical wing plates (2) and a base plate (3) forming an isosceles triangle structure. The wing plates (2) and the base plate (3) are connected by a web plate (4), and a through threaded hole (5) is provided in the middle of the web plate (4). An adjusting screw (6) is provided in the threaded hole (5). The clamping mechanism (7) is symmetrically arranged on both sides of the wire clamp body (1). It consists of a fixed seat (8) and a pawl (9). The fixed seat (8) has a cavity (10) inside. The pawl (9) is hinged to one end of the fixed seat (8). The pawl (9) has multiple continuous ratchet teeth on its outer side. The pawl (9) can pass through the cavity (10) and form a closed ring with the fixed seat (8). The two side walls of the cavity (10) are hinged with check pawls (11). One end of the check pawl (11) is provided with a check tooth to restrict the retraction of the pawl (9). The two sides of the check pawl (11) are provided with protrusions (12). The side wall of the cavity (10) has a groove (13) corresponding to the protrusion (12). The protrusion (12) is locked in the groove (13) to restrict the rotation of the check pawl (11).

2. The electrified railway contact wire positioning clamp according to claim 1, characterized in that, Multiple clamping mechanisms (7) for clamping wires are arranged parallel to each other on the same side of the wire clamp body (1).

3. The positioning clamp for the electrified railway contact network according to claim 1, characterized in that, The hinge shaft of the anti-return pawl (11) is located in its middle part, and a pressing part (14) is provided at one end of the anti-return pawl (11).

4. The electrified railway contact wire positioning clamp according to claim 3, characterized in that, The pressing part (14) is provided with a concave arc surface (15).

5. The electrified railway contact wire positioning clamp according to claim 2, characterized in that, The wing plate (2) is provided with a slot (16) corresponding to the cavity (10), and the slot (16) can accommodate the pawl (9) to penetrate.

6. The positioning clamp for the electrified railway contact network according to claim 1, characterized in that, It also includes a positioning clamp (17), which is disposed at the bottom of the base plate (3), and the cross section of the positioning clamp (17) is two symmetrical S-shaped arcs.

7. The electrified railway contact wire positioning clamp according to any one of claims 1-6, characterized in that, The surface of the fixed seat (8) opposite to the pawl (9) is an arc-shaped surface adapted to the wire.

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