CN210337648U

CN210337648U - Shock-absorbing rigid contact net for electrified rail transit

Info

Publication number: CN210337648U
Application number: CN201921129667.6U
Authority: CN
Inventors: 李维婉; 李相泉
Original assignee: Tianjin Yichang Electrical Equipment Co ltd
Current assignee: Tianjin Yichang Electrical Equipment Co ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-04-17
Anticipated expiration: 2029-07-18

Abstract

The utility model belongs to the technical field of electric railway transportation equipment's electronic track traffic shock attenuation rigid contact net. The method comprises the following steps: the damping device comprises a fixed body, a floating body, a damping elastomer, a wide-width contact wire and an insulating support. Through the shock attenuation elastomer of distribution between fixed body and floating body, make rigid contact net have certain flexibility, elasticity and damping performance to prevent the vibration to propagate in the contact net. Through the dispersed arrangement of the damping elastic bodies, the concentrated load at the supporting seat on the fixed body is converted into the uniform load of the floating body and the wide-width surface contact line, so that the bow net pressure is always kept consistent. By adopting the wide-width contact line, the effective abrasion loss is increased by 3-5 times, so that the service life of the wide-width contact line is prolonged by 3-5 times or even more. The utility model is suitable for straight line sections and curve sections; is also suitable for 'linear' installation and 'zigzag' installation; the method is suitable for equal-height installation and continuous variable-height installation; suitable for lower contacts, side contacts, etc.

Description

Shock-absorbing rigid contact net for electrified rail transit

Technical Field

The utility model belongs to the technical field of electric railway transportation equipment, be the electronic track traffic shock attenuation rigidity contact net of new development.

Background

Compared with a flexible contact net, the rigid contact net has the advantages of saving installation space, being free from tension along the line and being not broken, being easy to maintain and the like; compared with a contact rail, the electrified maintenance along the road section is realized because the contact rail is hung in the air, the convenience degree of operation and maintenance is improved, and the potential safety hazard of electric shock of ground personnel is eliminated.

Rigid contact networks are widely used in culvert sections of electrified railways and underground railway sections of cities. However, the current rigid catenary systems all present a series of problems that affect safety and operation.

Firstly, the rigid contact net lacks the damping performance, so that shock waves and vibration of the pantograph are transmitted in the contact net in a reciprocating manner and cannot be eliminated, the stability and the service life of the contact net are influenced, the contact net is easy to loosen and collapse to form potential safety hazards, and the service life of the whole system is generally 10-15 years.

Secondly, the rigid contact net is connected with a hole top or a ground support by adopting an insulating support, the concentrated load at the insulating support enables huge hard point impact to be generated between the pantograph nets, and the insulating supports are distributed discontinuously according to a certain interval to form discontinuous hard point impact, and the discontinuous hard point becomes a vibration source of the contact net and converts the pressure of the pantograph into vibration waves of the contact net. Not only can cause the contact net to be damaged and even fall off, but also can damage the pantograph, so that the pantograph is hung on the net or is seriously worn; the hard point can also flick the pantograph to cause the pantograph to be off-line and arc-drawn, and the pantograph slide plate and the contact wire are quickly worn, so that the quantity of harmful dust is greatly increased.

At present, contact wires are all in a round or narrow contact surface structure, effective abrasion loss is small, the contact wires need to be replaced frequently, maintenance amount is large, and operation efficiency is reduced.

Therefore, the damping performance of the rigid catenary is to be improved urgently, the hard point support of the rigid catenary is to be eliminated urgently, and the service life of the contact line is to be improved urgently.

Disclosure of Invention

The utility model discloses a thoroughly solve the technical defect of rigidity contact net, provide electronic track traffic shock attenuation rigidity contact net. The damping rigid contact net body consists of a fixed body (1) and one or more floating bodies (2), and the fixed body (1) and the floating bodies (2) are connected by a damping elastomer (3). So that only the rigid and elastic contact net has the required flexibility and shock absorption.

The damping elastomers (3) are distributed along the line direction of the contact net in a dispersed manner, so that the concentrated load of the insulating support (5) on the fixed body (1) is uniformly distributed to the floating body (2) and the wide-breadth contact line (4) through the damping elastomers (3), the contact pressure of the wide-breadth contact line (4) and the contact pressure of the pantograph are consistent all the time, and the rigid impact hard point of the contact net to the pantograph is eliminated.

By adopting the wide-width contact wire (4), the effective abrasion loss of the contact wire is increased by 3-5 times, and the average service life of the contact wire is prolonged from 10-15 years to 30-50 years or even longer.

The utility model has the advantages that: 1. the potential safety hazard that the contact net is damaged due to hard point impact is eliminated; 2. the system vibration caused by intermittent hard points is eliminated, and arc discharge and arc ablation are reduced; 3. the service life of the pantograph is prolonged, and the abrasion of a contact line and the pantograph and the metal dust pollution are reduced; 4. the service life of the contact line is greatly prolonged; 5. the energy consumption of the electric arc is reduced, the energy is saved, and the speed reduction hidden danger caused by the electric arc is eliminated; 6. the vibration of the pantograph and the contact net is absorbed, and the pantograph-catenary relationship is improved; 7. the propagation of vibration and noise along the line is prevented; the system can run more stably and adapt to high-speed running; 8. the operation and maintenance requirements are reduced, so that the contact network becomes a maintenance-free system, and the operation cost is greatly reduced; 9. by adopting a wide-width contact line (4) and the shock absorption measures, the service life of the system is prolonged by 3-5 times, so that the average service life of the system is prolonged to more than 30-50 years from 10-15 years.

Drawings

Fig. 1 is the utility model discloses electronic track traffic shock attenuation rigid contact net assembly drawing.

Fig. 2 is the utility model discloses electric rail transit shock attenuation rigid contact net line direction side view along the line.

Fig. 3 is the installation schematic diagram of the insulating support of the present invention.

Fig. 4 is an assembly view of the damping elastomer of the present invention.

Fig. 5 is a perspective view of a wide contact bobbin of the present invention.

In the figure, (1) -a fixed body; (2) -a floating body; (3) -a shock absorbing elastomer; (4) -a broad face contact line; (5) -an insulating support.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

The damping rigid contact network for the electrified rail transit shown in the figure 1 consists of five parts, and is simple and reliable in structure, simple and convenient to install, economical, durable and easy to maintain. Wherein the fixed body (1) and the floating body (2) are made of aluminum profiles or similar conductive materials, each length is 12-15 meters, and the fixed body and the floating body can also be made according to the requirements of customers; the damping elastomer (3) is made of rubber or similar damping materials; the wide breadth contact wire (4) is made of metal materials such as copper alloy or stainless steel, and the insulating support (5) is composed of a clamping jaw, an insulator and a support.

The fixed body (1) and the floating body (2) are sleeved together for use according to the figure 2, and the floating body (2) and the wide-width contact line (4) are sleeved together for use; the damping elastomer (3) is inserted between the fixed body (1) and the floating body (2) at the side surface; the insulating support (5) is used for being connected with an external support.

According to the very simple field installation shown in fig. 3, the insulating support (5) is firstly installed on the fixed supporting point, and then the fixing body (1) is fastened on the insulating support (5).

Inserting the floating body (2) into the fixed body (1) again according to fig. 4; finally, the wide-width surface contact line (4) is inserted into the floating body (2).

According to the condition that the overall current-carrying capacity is guaranteed as shown in fig. 5, the effective abrasion loss of the wide-breadth contact line (4) is greatly increased and is generally 3-5 times of that of the existing round contact line or narrow-breadth contact line.

Claims

1. Electrified track traffic shock attenuation rigid contact net, its characterized in that: the fixed body (1) and the floating body (2) are combined into a contact net body by a damping elastomer (3), so that the novel rigid contact net has great flexibility and damping property; and the concentrated load at the position of the insulating support is uniformly distributed on the floating body (2) and the wide-width contact line (4); by adopting the wide-width contact wire (4), the effective abrasion loss of the contact wire is increased by 3-5 times, and the service life of the contact wire and the contact net is prolonged by 3-5 times.

2. The electrified rail transit shock-absorbing rigid catenary of claim 1, wherein the body is formed by combining a fixed body and one or more floating bodies.

3. The electrified rail transit shock absorption rigid catenary of claim 1, wherein the fixed body and the floating body are connected by a shock absorption elastomer, so that the catenary originally only having rigidity and elasticity has the properties of flexibility, shock absorption, noise reduction and the like.

4. The shock-absorbing rigid catenary of electrified rail transit as claimed in claim 1, wherein the distribution of the shock-absorbing elastic bodies is used to distribute the concentrated load on the supporting seat of the fixed body uniformly to the floating body and the wide contact line (4) so as to keep the contact pressure of each contact line to the pantograph uniform.

5. The shock-absorbing rigid overhead line system for electrified rail transit according to claim 1, wherein the effective abrasion loss of the overhead line is increased by 3-5 times by adopting a wide-breadth overhead line (4), so that the service life of the overhead line and the service life of a system of the overhead line system are increased by 3-5 times or more.