CN117681736A - Flexible hanger of contact net - Google Patents

Abstract

The invention relates to the technical field of rail transit, in particular to a contact net dropper, which comprises a carrier cable clamp and a contact cable clamp, wherein a dropper wire is arranged between the carrier cable clamp and the contact cable clamp, two ends of the dropper wire are respectively provided with a heart-shaped guard ring connected with the carrier cable clamp and the contact cable clamp, the heart-shaped guard ring is matched with hanging rings on the carrier cable clamp and the contact cable clamp to form a loop chain structure, in order to reduce the movable space of the heart-shaped guard ring and avoid the damage of the heart-shaped guard ring and the guard ring caused by large impact force, and a buffer cushion block is arranged in the heart-shaped guard ring, so that the reliability of the dropper is improved.

Description

Flexible hanger of contact net

Technical Field

The invention relates to the technical field of rail transit, in particular to a contact net dropper.

Background

The contact line is suspended on the carrier cable through the hanger in the contact net, the hanger generally comprises a rigid hanger and a flexible hanger, the flexibility variability of the hanger in the flexible hanger has good buffering performance, the existing flexible hanger structure comprises a carrier cable wire clamp mounted on the carrier cable and a contact wire clamp mounted on the contact line as disclosed in patent document CN101811449A, the carrier cable wire clamp and the contact wire clamp are connected through the flexible hanger, two ends of the hanger are connected with the carrier cable wire clamp and the contact wire clamp through the flexible hanger, namely, the hanger rings arranged on the carrier cable clamp and the contact wire clamp are respectively connected with heart-shaped retaining rings at two ends of the hanger to form a loop chain structure, the structure can provide enough movable space for the hanger, and further the carrier cable and the contact net can swing and incline when stretching in the length direction of the track, but the larger space in the loop chain structure can cause large movable space at two ends of the hanger to generate larger impact in the direction perpendicular to the ground, the hidden danger is easily caused in the long time, and safety hazards are generated.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a hanger structure capable of effectively eliminating impact force at two ends of a hanger wire in a flexible hanger, which adopts the following technical scheme:

a flexible hanger of a contact net comprises a carrier cable clamp and a contact cable clamp, wherein a hanger wire is arranged between the carrier cable clamp and the contact cable clamp, two ends of the hanger wire are respectively provided with a heart-shaped guard ring connected with the carrier cable clamp and the contact cable clamp, and a buffer cushion block is arranged in the heart-shaped guard ring.

Furthermore, current-carrying rings connected with the carrier cable clamp and the contact line clamp are respectively arranged at two ends of the hanging string, a composite connecting clamp is arranged at one end, connected with the carrier cable clamp and the contact line clamp, of each current-carrying ring, and a wear-resistant sheath contacted with the current-carrying rings is arranged at the opening of the composite connecting clamp.

Further, the two ends of the hanging string are provided with composite wire pressing pipes which enable the two ends of the hanging string to form a heart-shaped guard ring, and the composite wire pressing pipes comprise a wear-resistant inner layer and a deformation outer layer which are sleeved together.

Further, a protrusion or a groove is arranged on the buffer cushion block.

Further, the buffer cushion block comprises a pair of clamping plates and a connecting part which connects the two clamping plates and is embedded into the heart-shaped protecting ring.

Further, the connecting portion is connected with the clamping plate through a clamping structure.

Furthermore, two ends of the bearing cable clamp are provided with arc transition sections.

The buffer cushion blocks are arranged in the gaps of the heart-shaped guard rings at the two ends of the hanging string, so that the movable space of the heart-shaped guard rings is reduced, the overlarge impact force between the heart-shaped guard rings and the hanging rings caused by overlarge movable space is avoided, and the impact resistance and fatigue resistance of the hanging string are improved.

Drawings

FIG. 1 is a schematic diagram of a dropper structure;

FIG. 2A is a schematic diagram of a buffer block according to embodiment 1;

FIG. 2B is a schematic diagram illustrating the cooperation between the cushion block and the corresponding suspension ring according to the embodiment 1;

FIG. 3A is a schematic diagram of a buffer block according to embodiment 2;

FIG. 3B is a schematic diagram illustrating the cooperation between the cushion block and the corresponding suspension ring according to the embodiment 2;

FIG. 4 is a schematic view of a load cable clamp structure;

FIG. 5 is a schematic diagram of a structure of a wire pressing pipe;

fig. 6 is a schematic view of a terminal structure.

Detailed Description

In order to better understand the technical scheme of the present invention, the following further details the technical scheme of the present invention with reference to the accompanying drawings and specific embodiments.

The suspension wire shown in fig. 1 comprises a carrier wire clamp 1 and a contact wire clamp 2, wherein the carrier wire clamp 1 and the contact wire clamp 2 are connected through a flexible suspension string 3, the carrier wire clamp 1 is used for being suspended and fixed on a carrier wire, the contact wire clamp 2 holds and fixes the contact wire, and the height of the contact wire from the carrier wire is controlled through the suspension string 3.

In order to enable the suspension string 3 to be connected with the carrier cable clamp 1 and the contact wire clamp 2, the two ends of the suspension string 3 are provided with the heart-shaped guard rings 3-1, the carrier cable clamp 1 and the contact wire clamp 2 are respectively provided with the suspension rings 6, the heart-shaped guard rings 3-1 and the suspension rings 6 are connected with each other to form a loop chain structure 4, no matter in the loop chain structure 4 formed by the heart-shaped guard rings 3-1 and the suspension rings 6, larger gaps are reserved between the heart-shaped guard rings 3-1 and the suspension rings 6, the heart-shaped guard rings 3-1 and the suspension rings 6 can move relatively in the gaps, although the suspension string 3 can have good swinging freedom degree in the track length direction, and further, the position deviation of the carrier cable clamp 1 and the contact wire clamp 2 in the track length direction is compensated when the carrier cable and the contact wire are telescopic, but the suspension string of the train is provided with flexible self-adaptive bending when the contact wire in the vertical direction, the heart-shaped guard rings 3-1 still can move relatively far away in the vertical direction in the gaps of the suspension rings 6, the heart-shaped guard rings 3-1 can move relatively far away from the cushion block 6 in the vertical direction, the impact ring structure can be reduced, and the impact structure can be further reduced, compared with the cushion ring 3-shaped guard rings 3-1 can be filled relatively to the gap 1 in the gap 5, and the buffer structure is formed by the cushion ring 3-shaped guard rings 3-1 and the cushion ring structure is greatly and the gap 1, and the gap is reduced compared with the gap between the cushion ring structure is filled with the cushion ring structure and the cushion ring 3.

In this embodiment, the cushion block 5 is installed in the gap of the heart-shaped protecting ring 3-1 to limit the movable space of the hanging ring 6 as shown in fig. 1.

In order to facilitate installation and fixation and to modify the existing line, as shown in fig. 2 and 3, the buffer cushion block 5 includes two clamping plates 5-3 and a connecting portion 5-4 connecting the two clamping plates 5-3, the two clamping plates 5-3 are connected together by the connecting portion 5-4 and placed on two sides of the heart-shaped protecting ring, the heart-shaped protecting ring 3-1 is held in the middle to fix the buffer cushion block 5 to the heart-shaped protecting ring 3-1, the connecting portion 5-4 is placed in a gap of the heart-shaped protecting ring 3-1 to mainly fill the gap of the heart-shaped protecting ring 3-1, in this embodiment, the connecting portion 5-4 is fixedly connected with one side clamping plate 5-3, the other side clamping plate 5-3 is connected with the connecting portion 5-4 by a buckling manner, specifically, a conical head with a cross groove is arranged on the connecting portion 5-4, a connecting hole is arranged on the clamping plate 5-3 connected by buckling, and the conical head can be clamped together by inserting into the connecting hole during connection. Because the connecting part 5-4 mainly fills the hollow part, and the cross section shape of the hanging ring 6 is different, in order to enable the buffer cushion block 5 to be attached and propped against the cross section of the hanging ring 6, the buffer cushion block 5 is provided with a bulge 5-1 shown in fig. 2 or a groove 5-2 shown in fig. 3, so that the hanging ring 6 can be matched with the buffer cushion block 5, further limit the shaking space and simultaneously not influence the swinging of the hanging string 3 in the length direction of the carrier cable.

Because the carrier cable a bears a certain tensile force, the carrier cable at the position of the carrier cable clamp 1 forms a point included angle, in order to avoid larger abrasion of the carrier cable at the edge positions of the two ends of the carrier cable clamp 1, arc transition sections 1-1 are arranged at the two ends of the carrier cable clamp 1 as shown in fig. 4 so as to adapt to deformation of the carrier cable and reduce abrasion of the carrier cable.

The heart-shaped guard rings 3-1 formed at two ends of the hanging string 3 are formed by restraining the hanging string 3 through the wire pressing pipe 8 after two ends of the hanging string are bent, in order to avoid abrasion of the hanging string, the wire pressing pipe 8 comprises two layers of abrasion-resistant inner layers 8-1 made of nonmetal materials and deformation outer layers 8-2 made of metal materials respectively, the abrasion-resistant inner layers 8-1 are in direct contact with the hanging string to avoid abrasion to the hanging string 3, and the deformation outer layers 8-2 can deform to clamp and fix the hanging string after extrusion.

Since the suspension string 3 is connected with the carrier cable clamp 1 and the contact cable clamp 2 through the loop chain structure, the conductor connection is in a virtual connection state, and in order to conduct the carrier cable and the contact cable current to achieve the equal potential, the two ends of the suspension string 3 are provided with the current-carrying rings 3-2, the current-carrying rings 3-2 are formed by a part of the suspension string reserved when the end part of the suspension string 3 bends the heart-shaped guard ring, and the carrier cable clamp 1 and the contact cable clamp 2 are respectively connected with each other through bolts, so that the carrier cable clamp 1, the contact cable clamp 2 and the suspension string 3 can form a good conductive state. In order to facilitate the connection of each current-carrying ring 3-2 with the load-carrying cable clamp 1 and the contact cable clamp 2, a connecting cable clamp 7 is arranged at the end part of the current-carrying ring 3-2, and a non-metal wear-resistant sheath 7-1 is sleeved on the opening of the connecting cable clamp 7 to prevent the friction damage of the edges of the current-carrying rings and the opening of the connecting cable clamp 7.

Claims (7)

1. The utility model provides a flexible dropper of contact net, includes load cable clamp (1) and contact line fastener (2) between be provided with dropper wire (3), dropper wire (3) both ends all be provided with heart-shaped grommet (3-1) that are connected with load cable clamp (1) and contact line fastener (2) respectively, its characterized in that: a buffer cushion block (5) is arranged in the heart-shaped guard ring (3-1).

2. A catenary flexible hanger according to claim 1, wherein: the two ends of the hanging string (3) are respectively provided with a current-carrying ring (3-2) connected with the carrier cable clamp (1) and the contact wire clamp (2), one end, connected with the carrier cable clamp (1) and the contact wire clamp (2), of each current-carrying ring (3-2) is provided with a composite connecting clamp (7), and the opening of the composite connecting clamp (7) is provided with a wear-resistant sheath (7-1) contacted with the current-carrying ring (3-2).

3. A catenary flexible hanger according to claim 1, wherein: the two ends of the hanging string are provided with composite wire pressing pipes (8) which enable the two ends of the hanging string (3) to form heart-shaped guard rings (3-1), and the composite wire pressing pipes (8) comprise wear-resistant inner layers (8-1) and deformation outer layers (8-2) which are sleeved together.

4. A catenary flexible hanger according to claim 1, wherein: the buffer cushion block (5) is provided with a bulge (5-1) or a groove (5-2).

5. A catenary flexible hanger according to any one of claims 1 to 4, wherein: the buffer cushion block (5) comprises a pair of clamping plates (5-3) and a connecting part (5-4) which connects the two clamping plates (5-3) and is embedded into the heart-shaped guard ring (3-1).

6. A catenary flexible hanger according to claim 5, wherein: the connecting part (5-4) is connected with the clamping plate (5-3) through a clamping structure.

7. A catenary flexible hanger according to claim 1, wherein: the two ends of the bearing cable clamp (1) are provided with arc transition sections (1-1).