Pre-tightening bolt-free positioning wire clamp for railway contact network

Abstract

The invention provides a pre-tightening bolt-free positioning wire clamp for a railway overhead line system, belongs to the technical field of flexible suspension positioning equipment of an electrified railway overhead line system, and aims to solve the problems that bolts of an existing positioning wire clamp for the overhead line system are loosened in actual operation, and the structural design needs to be further improved. A positioning wire clamp main body is formed by inserting a positioning pin in the middle of a left half C-shaped positioning wire clamp and a right half C-shaped positioning wire clamp with holes and connecting the left half C-shaped positioning wire clamp and the right half C-shaped positioning wire clamp with holes into a whole, and then an elastic U-shaped wire clamp hoop is sleeved outside the wire clamp main body of the left half C-shaped positioning wire clamp and the right half C-shaped positioning wire clamp with holes; a positioning fixing pin is inserted into the through hole of the hoop, and is inserted, locked and fixed by a split pin; and wire clamping nozzles of the left half C-shaped positioning wire clamp and the right half C-shaped positioning wire clamp with holes are connected with a contact wire in a clamping manner. The whole structure is novel and practical, and is suitable for erecting positioning contact lines for the electrified railway overhead line system.

Description

Technical Field

[0001] The invention belongs to the technical field of flexible suspension positioning equipment for electrified railway contact network systems and relates to a positioning wire clamp used for railway contact network systems. Background Art

[0002] The rapid development of electrified railway construction and technological progress have put forward increasingly higher technical requirements for flexible suspension and positioning equipment for electrified railway contact network systems, especially positioning wire clamps for contact networks. This is because positioning wire clamps are used in railway contact network systems to connect and fix contact wires, and to make the contact wires slide through the pantograph in a zigzag shape. Positioning wire clamps are one of the key components of electrified railway contact network systems, and they are subject to high-frequency vibrations and other characteristics. They are related to the safety and quality of railway operations. In the known technology, the positioning wire clamps used in existing railway contact network systems mainly include U-shaped pin positioning wire clamps and pinless positioning wire clamps, and most of them are fastened with threaded pairs, with a large number of parts. During the actual use of high-speed railway lines, failure phenomena may occur, such as the positioning wire clamp body breaking, the positioning wire clamp being separated from the positioner, etc.; for example, Chinese patent authorization announcement number CN208602351U discloses a positioning wire clamp, which is composed of a positioning support component, and an auxiliary positioning component used in conjunction with the positioning support component. The positioning support component includes a positioning sleeve and a threading hole, and a first and a second positioning ear plate symmetrically arranged on both sides of the positioning sleeve; the auxiliary ... The positioning component includes an arc-shaped clamping plate and a first auxiliary positioning ear plate and a second auxiliary positioning ear plate symmetrically arranged at both ends and used in conjunction with the first positioning ear plate and the second positioning ear plate respectively, and ear plate positioning holes are respectively provided, and a first positioning screw, a first positioning nut, a second positioning screw, and a second positioning nut are used in conjunction with them; however, due to the limitations of its overall structure, especially the use of a positioning screw and a positioning nut connection structure, the threaded pair connection will be worn or even broken, and it is also easy to cause the bolts to loosen in long-term actual operation applications, resulting in the contact line being decoupled, posing a safety hazard. The positioning wire clamp product for railway contact network has room for further improvement and development.

[0003] In order to adapt to the development of flexible suspension equipment of electrified railway contact network system and scientific and technological progress, it is necessary to further improve and develop a new type of pre-tightened boltless positioning wire clamp for electrified railway contact network. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art and solve the problem that the bolts of the existing contact network positioning wire clamps will loosen during actual operation, and the structural design needs to be further improved. The purpose of the present invention is to provide a new type of boltless positioning wire clamp for electrified contact network, which has a new and practical structure, has no bolts in the entire positioning wire clamp, is integrally connected and tightened, does not have the problem of bolt loosening and the positioning wire clamp and contact wire loosening during actual operation, and is easy to install and maintain, and is safe and convenient to use.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A pre-tightening boltless positioning wire clamp for railway contact network, the positioning wire clamp body adopted by the invention is composed of a left half C-type positioning wire clamp, a right half C-type positioning wire clamp with holes, an elastic U-type wire clamp clamp, a positioning fixing pin and a positioning pin connected together, the left half C-type positioning wire clamp and the right half C-type positioning wire clamp with holes are inserted with a positioning pin in the middle, and the positioning wire clamp clamp is fitted on the outside of the wire clamp bodies of the left half C-type positioning wire clamp and the right half C-type positioning wire clamp with holes, and the positioning fixing pin is inserted into the pin through hole of the clamp, and then the open pin is inserted and connected to the positioning fixing pin to lock and fix the entire boltless positioning wire clamp; the left half C-type positioning wire clamp and the right half C-type positioning wire clamp with holes are provided with wire clamping nozzles to clamp the contact wire.

[0007] The above-mentioned pre-tightened boltless positioning wire clamp for railway contact network, the left half C-type positioning wire clamp is provided with a left semi-circular convex hoop type wire clamp edge at the top of the left half C-type positioning wire clamp body, and left half wire clamp edge ball head convex contacts are respectively provided at the wire clamp edge interface at the top of the vertical surface of the left half wire clamp docking interface on both sides of the vertical opening of the left half C-type positioning wire clamp body, the lower part of the inner cavity surface of the left half C-type positioning wire clamp body is provided with a left half wire clamp embedded positioning pin groove for matching the positioning pin, the bottom of the left half C-type positioning wire clamp body is provided with an extended left half wire clamp clamp mouth coupling seat, and the bottom of the left half wire clamp clamp mouth coupling seat is provided with a left half clamp body V-shaped wire clamp mouth.

[0008] The above-mentioned pre-tightening boltless positioning wire clamp for railway contact network, the right half C-type positioning wire clamp is provided with a left semicircular ring-shaped convex hoop type wire clamp edge at the top of the right half C-type positioning wire clamp body, and the left half wire clamp interface vertical top is located at the wire clamp edge interface on both sides of the vertical opening of the left half C-type positioning wire clamp body, and the right half wire clamp edge ball head convex contact which is symmetrically matched with the left half wire clamp edge ball head convex contact is formed at the wire clamp edge interface, and the lower part of the inner cavity surface of the left half C-type positioning wire clamp body is provided with a right half wire clamp with a positioning pin. The right half C-shaped positioning wire clamp body is provided with an extended right half wire clamp mouth joint seat at the bottom, and the right left half wire clamp mouth joint seat is provided with a right half clamp body V-shaped wire clamp mouth. The outer body of the right half C-shaped positioning wire clamp body is also provided with a right half wire clamp through-and-through positioning fixing pin hole ear. After the outer body of the right half wire clamp through-and-through positioning fixing pin hole ear is inlaid with an elastic U-shaped wire clamp clamp, the ear hole of the right half wire clamp through-and-through positioning fixing pin hole ear coincides with the through hole of the clamp for inserting the positioning fixing pin, and the positioning fixing pin is inserted into the through hole.

[0009] The above-mentioned pre-tightened boltless positioning wire clamp for railway contact network, the elastic U-shaped wire clamp hoop is an elastic U-shaped wire clamp hoop body with an opening at one end, and a hoop top contact surface is formed on the top of the hoop body. The hoop top contact surface cooperates with the left half C-shaped positioning wire clamp and the right half C-shaped positioning wire clamp with holes to form an integrated convex hoop type wire clamp edge, and the arc top heads at both ends of the hoop body of the elastic U-shaped wire clamp hoop body are respectively provided with hoop insertion positioning fixing pin through holes.

[0010] The above-mentioned pre-tightened boltless positioning wire clamp for railway contact network is characterized in that the wire clamping nozzle mouth surfaces of the left half clamp body V-shaped wire clamping nozzle and the right half clamp body V-shaped wire clamping nozzle are made into threaded tooth profile mouth surfaces.

[0011] The above-mentioned pre-tightened boltless positioning wire clamp for railway contact network, the left half C-shaped positioning wire clamp, the right half C-shaped positioning wire clamp with holes, the elastic U-shaped wire clamp clamp, and the positioning fixing pin are all copper alloy forged structural components made by copper alloy forging technology.

[0012] When the present invention is used, according to design requirements and actual needs, the pre-tightened boltless positioning wire clamp for railway contact network of the present invention is opened and connected to the contact line parallel to the track, and the position of the contact line is fixed in advance. Then, in conjunction with the positioner, the left half C-type positioning wire clamp and the right half C-type positioning wire clamp with holes are inserted with a positioning pin in the middle to be connected to each other as a whole. Then, an elastic U-shaped wire clamp clamp is set on the outside of the wire clamp body of the left half C-type positioning wire clamp and the right half C-type positioning wire clamp with holes, and a positioning fixing pin is inserted in the pin through hole of the clamp. Then, the open pin is inserted into the positioning fixing pin to lock and fix the entire boltless positioning wire clamp. During the actual operation process, they are always in a tightly mutually clamped state, and the practical application effect of not loosening can be achieved.

[0013] Since the design of the present invention adopts the above-mentioned technical scheme, especially the main body of the positioning wire clamp is composed of a left half C-type positioning wire clamp and a right half C-type positioning wire clamp with holes, which are tightly fitted together, and a positioning pin is embedded at the longitudinal center line of the left half C-type positioning wire clamp and the right half C-type positioning wire clamp with holes, the V-shaped clamping mouths of the two clamps are clamped together to clamp the contact line, and an elastic U-shaped wire clamp clamp is inserted outside the two tightly fitted positioning wire clamp bodies, and is locked and fixed by a positioning fixing pin and an open pin. Test results have shown that it has a novel and practical overall structure, the entire positioning wire clamp has no bolts, the overall connection is tight, there is no problem of bolt loosening, the positioning wire clamp and the contact line loosening in actual operation, and it is easy to install and maintain, safe and convenient to use, etc., and is suitable for erecting suspended contact lines in electrified railway contact network systems.

[0014] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the specific structure of an embodiment of the present invention.

[0017] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the embodiment from the left.

[0018] Figure 3 yes Figure 1 An enlarged three-dimensional structural schematic diagram of the left half of the C-shaped positioning wire clamp in the embodiment.

[0019] Figure 4 yes Figure 1 An enlarged three-dimensional structural schematic diagram of the right half of the C-shaped positioning wire clamp with holes in the embodiment.

[0020] Figure 5 yes Figure 1 An enlarged three-dimensional structural schematic diagram of the elastic U-shaped wire clamp in the embodiment.

[0021] Figure 6 yes Figure 2 Schematic diagram of the enlarged sectional structure along the AA direction in the embodiment.

[0022] Figure 7 yes Figure 1 An enlarged structural diagram of the positioning pin in the embodiment.

[0023] Figure 8 yes Figure 2 An enlarged structural diagram of the positioning and fixing pin in the embodiment.

[0024] The numbers in the attached drawings are: 1-left half C-type positioning wire clamp; 101-left half circular ring convex hoop type wire clamp edge; 102-left half wire clamp edge ball head convex contact; 103-left half wire clamp embedded positioning pin groove; 104-left half wire clamp interface vertical surface; 105-left half wire clamp mouth joint; 106-left half clamp body V-shaped wire clamp mouth; 107-left half C-type positioning wire clamp body; 2-right half C-type positioning wire clamp with holes; 201-right half circular ring convex hoop type edge; 202-right half wire clamp edge ball head convex contact; 20 3-right half wire clamp embedded in the positioning pin groove; 204-right half wire clamp docking surface; 205-right half wire clamp mouth coupling seat; 206-right half clamp body V-shaped wire clamp mouth; 207-right half C-shaped positioning wire clamp body; 208-right half wire clamp through the positioning fixing pin hole ear; 3-elastic U-shaped wire clamp clamp; 301-clamp top contact surface; 302-elastic U-shaped wire clamp clamp body; 303-clamp through the positioning fixing pin through the hole; 4-open pin; 5-positioning fixing pin; 6-positioning pin; 7-contact line. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top", "bottom", "front end", "rear end", "head", "tail", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0027] As attached Figure 1-Figure 8 As shown, the main body of the positioning wire clamp adopted in this embodiment is composed of a left half C-type positioning wire clamp 1, a right half C-type positioning wire clamp with holes 2, an elastic U-type wire clamp clamp hoop 3, a positioning fixing pin 5 and a positioning pin 6. After the left half C-type positioning wire clamp 1 and the right half C-type positioning wire clamp with holes are inserted with a positioning pin in the middle and are connected to each other, an elastic U-type wire clamp clamp hoop 3 is sleeved on the outside of the wire clamp main body of the left half C-type positioning wire clamp 1 and the right half C-type positioning wire clamp with holes 2, and the positioning fixing pin 5 is inserted into the pin through hole of the clamp, and then the open pin 4 is inserted and connected to the positioning fixing pin 5 to lock and fix the entire boltless positioning wire clamp; the wire clamping nozzles of the left half C-type positioning wire clamp 1 and the right half C-type positioning wire clamp with holes 2 are clamped to the contact wire.

[0028] Preferably, see the attached Figure 1-Figure 3 The left half C-shaped positioning wire clamp 1 described in this embodiment is provided with a left semi-circular convex hoop type wire clamp edge 101 at the top of the left half C-shaped positioning wire clamp body 107, and left half wire clamp edge ball head convex contacts 102 are respectively provided at the wire clamp edge interface at the top of the left half wire clamp interface vertical surface 104 on both sides of the vertical opening of the left half C-shaped positioning wire clamp body 107, and the left half wire clamp embedding positioning pin groove 103 for matching the positioning pin is provided at the lower part of the inner cavity surface of the left half C-shaped positioning wire clamp body 107, and the left half wire clamp nozzle joint seat 105 is provided with an extended left half wire clamp nozzle joint seat 105 at the bottom of the left half wire clamp nozzle joint seat 105, and the left half clamp body V-shaped wire clamp nozzle 106 is provided with a left half clamp body V-shaped wire clamp nozzle mouth surface of the left half clamp body V-shaped wire clamp nozzle 106 is a threaded tooth profile mouth surface.

[0029] For example, see Figure 1-Figure 2 , Figure 4 The right half C-shaped positioning wire clamp 2 of this embodiment is provided with a left semicircular convex hoop type wire clamp mouth edge 201 at the top of the right half C-shaped positioning wire clamp body 207, and the left half wire clamp interface vertical surface 204 on both sides of the vertical opening of the left half C-shaped positioning wire clamp body 207 is respectively provided with right half wire clamp mouth edge ball head convex contact 202 which is symmetrically matched with the left half wire clamp mouth edge ball head convex contact 102 at the wire clamp mouth edge interface, and the lower part of the inner cavity surface of the left half C-shaped positioning wire clamp body 207 is provided with a right half wire clamp embedded positioning pin groove 203 for connecting the positioning pin, and the right half C-shaped positioning wire clamp body 10 7 is provided with an extended right half wire clamp nozzle joint seat 205 at the bottom, and a right half clamp body V-shaped wire clamp nozzle 206 is provided at the bottom of the right left half clamp nozzle joint seat 205. A right half wire clamp insertion and positioning fixing pin hole ear 208 is also provided on the outer body of the right half C-shaped positioning wire clamp body 107. After the outer body of the right half wire clamp insertion and positioning fixing pin hole ear 208 is sleeved with the elastic U-shaped wire clamp clamp 3, the ear hole of the right half wire clamp insertion and positioning fixing pin hole ear 208 coincides with the through hole of the clamp for inserting the positioning fixing pin, and the positioning fixing pin 5 is inserted into the through hole for inserting the connecting positioning fixing pin 5. The wire clamp nozzle mouth surface of the right half clamp body V-shaped wire clamp nozzle 206 is a threaded tooth profile mouth surface.

[0030] For details, see the attached Figure 1-Figure 2 , Figure 5 The elastic U-shaped wire clamp hoop 3 described in this embodiment is an elastic U-shaped wire clamp hoop body 302 with an opening at one end, and a hoop top contact surface 301 is formed on the top of the hoop body. The hoop top contact surface 301 cooperates with the convex hoop type wire clamp edge of the left half C-shaped positioning wire clamp 1 and the right half C-shaped positioning wire clamp with holes 2, and hoop insertion positioning fixing pin through holes 303 are respectively formed on the arc top heads at both ends of the hoop body of the elastic U-shaped wire clamp hoop body 302.

[0031] For further details, see the attached Figure 1-Figure 2 , Figure 6 The left half C-shaped positioning wire clamp 1, the right half C-shaped positioning wire clamp with holes 2, the elastic U-shaped wire clamp hoop 3, and the positioning fixing pin 5 described in this embodiment are all copper alloy forged structural components made by copper alloy forging technology.

[0032] The above is only one embodiment. On this basis, other technical features and technical solutions derived by adding components, equivalent substitutions and local improvements without creative work by technicians in this field are all within the scope of protection of the patent of this invention.

Claims

1. A pre-tightening boltless positioning wire clamp for railway contact network, comprising a positioning wire clamp body, characterized in that: The main body of the positioning wire clamp is composed of a left half C-shaped positioning wire clamp (1), a right half C-shaped positioning wire clamp with holes (2), an elastic U-shaped wire clamp hoop (3), a positioning fixing pin (5) and a positioning pin (6). After the positioning pin is inserted between the left half C-shaped positioning wire clamp (1) and the right half C-shaped positioning wire clamp with holes (2), the positioning wire clamp hoop (3) is mounted on the outside of the wire clamp main body of the left half C-shaped positioning wire clamp (1) and the right half C-shaped positioning wire clamp with holes (2), and the positioning fixing pin (5) is inserted into the pin through hole of the hoop, and then the open pin (4) is inserted into the positioning fixing pin (5) to lock and fix the entire boltless positioning wire clamp; the wire clamping nozzles of the left half C-shaped positioning wire clamp (1) and the right half C-shaped positioning wire clamp with holes (2) clamp the contact wire.

2. A pre-tightening boltless positioning clamp for railway contact network according to claim 1, characterized in that: The left half C-shaped positioning wire clamp (1) is provided with a left semicircular convex hoop type wire clamp edge (101) at the top of the left half C-shaped positioning wire clamp body (107), and left half wire clamp edge ball head convex contacts (102) are respectively provided at the top of the left half wire clamp interface vertical surface (104) on both sides of the vertical opening of the left half C-shaped positioning wire clamp body (107) and located at the wire clamp edge interface, and the lower part of the inner cavity surface of the left half C-shaped positioning wire clamp body (107) is provided with a left half wire clamp embedding positioning pin groove (103) for matching the positioning pin, and the bottom of the left half C-shaped positioning wire clamp body (107) is provided with an extended left half wire clamp nozzle joint seat (105), and the bottom of the left half wire clamp nozzle joint seat (105) is provided with a left half clamp body V-shaped wire clamp nozzle (106).

3. The pre-tightening boltless positioning clamp for railway contact network according to claim 1, characterized in that: The right half C-shaped positioning wire clamp (2) is provided with a left semicircular convex hoop type wire clamp edge (201) at the top of the right half C-shaped positioning wire clamp body (207), and right half wire clamp edge ball head convex contacts (202) which are symmetrically and dynamically engaged with the left half wire clamp edge ball head convex contacts (102) are provided at the wire clamp edge interface on the top of the left half wire clamp interface vertical surface (204) on both sides of the vertical opening of the left half C-shaped positioning wire clamp body (207), and the lower part of the inner cavity surface of the left half C-shaped positioning wire clamp body (207) is provided with a right half wire clamp embedded positioning pin groove (203) for connecting the positioning pin. The bottom of the right half C-shaped positioning wire clamp body (207) is provided with an extended right half wire clamp mouth joint seat (205), and the bottom of the right and left half wire clamp mouth joint seat (205) is provided with a right half clamp body V-shaped wire clamp mouth (206). The outer body of the right half C-shaped positioning wire clamp body (207) is also provided with a right half wire clamp through-connecting positioning and fixing pin hole ear (208). After the outer body of the right half wire clamp through-connecting positioning and fixing pin hole ear (208) is sleeved with an elastic U-shaped wire clamp clamp (3), the ear hole of the right half wire clamp through-connecting positioning and fixing pin hole ear (208) coincides with the through hole of the clamp through-connecting positioning and fixing pin, and the positioning and fixing pin (5) is inserted into the through hole.

4. The pre-tightening boltless positioning clamp for railway contact network according to claim 1, characterized in that: The elastic U-shaped wire clamp hoop (3) is a wire clamp hoop body (302) with an opening at one end thereof, and a hoop top contact surface (301) is formed on the top of the hoop body. The hoop top contact surface (301) cooperates with the left half C-shaped positioning wire clamp (1) and the right half C-shaped positioning wire clamp with holes (2) to form an integrated convex hoop type wire clamp edge, and hoop insertion positioning fixing pin through holes (303) are respectively formed on the arc top heads at both ends of the hoop body of the elastic U-shaped wire clamp hoop body (302).

5. A pre-tightening boltless positioning clamp for railway contact network according to claims 2 and 3, characterized in that: The thread clamping nozzle surfaces of the left half clamp body V-shaped thread clamping nozzle (106) and the right half clamp body V-shaped thread clamping nozzle (206) are manufactured into thread tooth profile surfaces.

6. The pre-tightening boltless positioning clamp for railway contact network according to claim 1, characterized in that: The left half C-shaped positioning wire clamp (1), the right half C-shaped positioning wire clamp with holes (2), the elastic U-shaped wire clamp hoop (3), and the positioning fixing pin (5) are all copper alloy forged structural components made by a copper alloy forging process.

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