CN205651991U - Rapid transit system's road surface power supply structure - Google Patents

Abstract

The utility model discloses a road surface power supply structure of a rapid public transportation system, which relates to the technical field of urban public transportation power supply and includes a vehicle body, a driving mechanism and a road surface. A power supply tank, a return tank, an insulating base and a road surface are continuously laid along the road surface extension direction. The power supply belt formed by the insulating cover; the top of the insulating base is provided with an insulating cover, which forms a power supply gap and a return gap respectively, and supports the power supply tank and the return tank on the top; the power supply rod and the return rod are hung on the chassis, and Fold upward at an acute angle at the bottom and extend into the power supply gap and the return gap respectively; the first end of the power supply rod is connected to one end of the input port of the vehicle drive mechanism, and the end is in contact with the power supply tank; the head end of the return rod is connected to the input port of the vehicle drive mechanism The other end is connected, and the end is in contact with the return tank; the power supply circuit is formed through the power supply tank, the power supply rod, the vehicle driving mechanism, the return rod and the return tank. It can be used not only for the reconstruction of old lines, but also for the construction of new lines.

Description

A road surface power supply structure for rapid public transport system

technical field

The utility model relates to the technical field of urban public transportation power supply, in particular to the traction power supply technology of a rapid public transportation system (BRT).

Background technique

Under the serious situation of urban public transportation congestion and deteriorating environmental pollution, electric traction vehicles have become the first choice for cities to solve traffic problems due to their advantages of large capacity, high efficiency, low pollution, and sustainability.

At present, urban public transportation systems using electric traction are mainly divided into two categories: urban rail transit represented by subways and light rails, and trolleybuses. Urban rail transit generally uses DC traction power supply with a rated voltage of 750V or 1500V. Its advantage is that the traction network between traction substations is connected hand in hand to form a through-type power supply system, and it is better than the AC system at the same voltage level. The voltage loss is small, and it is a relatively competitive form of urban public transportation. Its disadvantage is that the stray current in the ground will cause electrochemical corrosion to the metal pipelines along the line, seriously damage the main structure of the civil engineering, the metal shell and other underground metal pipelines, and Corrosion intensifies with the extension of operation time. In addition, urban rail transit has a large investment and a long construction period. Fixed tracks are required, and the form of right of way is single. Compared with urban rail transit, trolleybus has no stray current corrosion problem, has the characteristics of diversified ways of way, low one-time cost, less operation and maintenance, flexible and convenient, and is gradually favored and recognized. However, trolleybuses need to erect overhead contact lines in urban public areas, which not only affects the appearance of the city, but more importantly, a pair of (double) contact lines and a pair of (double) collector poles (commonly known as braids) are used to receive current. This greatly increases the complexity of the catenary, which brings great difficulties to the design, operation and maintenance. Especially at intersections, the power supply has to be interrupted to form a no-power zone. Once stopped, the operation will be affected.

The utility model proposes a road surface power supply structure, which is compact in structure, convenient in operation, safe and reliable, economical and practical, and has the characteristics of relatively free way of way and does not affect the urban landscape. It is an effective solution to the urban public transportation system. It is especially suitable for power supply of public rapid transit system (BRT).

Utility model content

The purpose of this utility model is to provide a road surface power supply structure of a rapid public transportation system, which can effectively solve the protection problem of stray currents and step voltages in the traction power that affect the safety of pedestrians.

In order to achieve its purpose, the utility model adopts the following technical solutions: a road surface power supply structure of a rapid public transportation system, including the body of the vehicle, the driving mechanism and the road surface. The power supply belt formed by the insulation cover; the top of the insulation base is provided with an insulation cover, and the upper surface on both sides of the insulation base and the lower surface on both sides of the insulation cover form a power supply gap and a return gap respectively, and the top of the power supply gap is laid The top of the power supply groove and the return flow gap is laid with the return flow groove; the power supply rod and the return flow rod are respectively hinged on the chassis of the vehicle body close to the vehicle driving mechanism through insulating ferrules, and folded upward at an acute angle at the bottom, extending into the power supply gap and the return flow gap respectively. In the gap; the first end of the power supply rod is connected to one end of the input port of the vehicle drive mechanism, and the end of the power supply rod is in contact with the power supply tank; the head end of the return rod is connected to the other end of the input port of the vehicle drive mechanism, and the end of the return rod is in contact with the return tank ; The power supply circuit is formed through the power supply groove, the power supply rod, the vehicle driving mechanism, the return rod and the return groove.

The power supply pole and the return pole are covered with insulating skin except for the end, so as to enhance the ability of preventing flooding and short circuit caused by flooding.

The power supply gap and return flow gap have narrow and deep shapes to ensure that hands cannot extend into the gap or touch the power supply groove and return flow groove, eliminating the possibility of electric shock with bare hands.

The wheels on both sides of the vehicle running on the road ride on the power supply belt. There is a transverse groove under the insulating base to facilitate the circulation of rainwater and avoid or reduce water accumulation; the overall height of the insulating base and the insulating shield is generally controlled below 200mm, so that vehicles in the rapid public transport system can pass through when they leave the line in an emergency. The road section is allowed to be easy for pedestrians to pass through, and other vehicles can also pass through if necessary. Obviously, the deeper the accumulated water depth required for operation (national standard ≤150mm), the higher the height of the insulating base. The insulating base and the insulating shield have a certain strength, that is, a certain rigidity and plasticity, and glass fiber reinforced plastics are generally suitable. The rigidity of the insulating base should be sufficient to support the pressure of the supply and return channels and the supply and return bars that rub against it; the insulating cover should also have a certain strength to withstand the occasional rolling of the vehicle. Utilizing the plasticity of the insulating base and the insulating cover, the power supply tank and the return tank can be embedded in the joint of the insulating base and the insulating cover. The insulating ferrule only plays an insulating role, and it can be made of general rubber, resin and other materials.

The working principle of the utility model is: combining the rigidity and plasticity of the insulating base and the insulating shield with the installation structure of the power supply rail and the return rail, and constructing the most compact and simple insulating walking rail in the existing space Independent power supply circuit for ballast bed. The dielectric coefficient of the insulating base and the insulating shield material is high, and the power supply capacity of the power supply circuit can be greatly enhanced when the power frequency is used for power supply.

Compared with the prior art, the beneficial effects of the utility model are:

1. The utility model is insulated from the road surface to form an independent traction power supply circuit, which does not generate stray current and ground step voltage, and can also avoid the risk of electric shock with bare hands, protecting the safety of people and facilities.

2. The utility model can effectively avoid short-circuit faults and improve power supply reliability.

3. The utility model is installed on the road surface of the rapid public transportation system, does not affect other roads and facilities, and has low cost, less construction and installation, and good economy.

4. The utility model will not cause adverse effects on the urban landscape.

5. The dielectric constant of the insulation base and the insulation cover material of the utility model is high, and when the power frequency is used for power supply, the power supply capacity of the power supply circuit can be greatly enhanced.

6. The utility model has the advantages of compact structure, easy installation, convenient maintenance, safety and reliability, and long service life. It is suitable for the construction of new lines and the renovation of existing lines.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described. Example

What Fig. 1 shows is the schematic diagram of the road surface power supply structure of the rapid public transportation system, a kind of road surface power supply structure of the rapid public transportation system, including the car body 11 of the vehicle, the driving mechanism 12 and the road surface 5, paved on the road surface 5 by the power supply tank 1, the return flow The power supply belt formed by the slot 2, the insulating base 3 and the insulating shield 4, the power supply belt is laid continuously along the extension direction of the road surface 5; 4. A power supply gap 6 and a return gap 7 are respectively formed between the lower surfaces on both sides. The top of the power supply gap 6 is laid with a power supply groove 1, and the top of the return gap 7 is laid with a return groove 2; the power supply rod 8 and the return rod 9 pass through the insulating ferrule respectively. 10 is hinged on the chassis of the vehicle body 11 close to the vehicle drive mechanism 12, and is folded upward at an acute angle at the bottom, respectively extending into the power supply gap 6 and the return gap 7; the head end of the power supply rod 8 is connected to the input port of the vehicle drive mechanism 12 One end of the power supply rod 8 is connected with the power supply tank 1; the head end of the return rod 9 is connected with the other end of the vehicle drive mechanism (12 input port), and the end of the return rod 9 is in contact with the return tank 2; through the power supply tank 1, the power supply Rod 8, vehicle driving mechanism 12, return rod 9, and return groove 2 form a power supply circuit. The wheels 13 on both sides of the vehicle traveling on the road surface 5 ride on the power supply belt. The power supply rod 8 and the return rod 9 are all wrapped with insulating skins except the ends. , to enhance the ability to prevent flooding and short circuit due to flooding. There is a transverse groove under the insulating base 3 to facilitate the circulation of rainwater and avoid or reduce water accumulation; the height of the insulating base 3 and the insulating shield 4 is generally controlled below 200mm. In order to pass through when the vehicles of the rapid public transportation system leave the line in an emergency, it also allows pedestrians to pass through the road section, and other vehicles can also pass through when necessary. Obviously, the deeper the water depth required for operation (national standard ≤ 150mm), the insulating base 3 The higher the height is. The power supply gap 6 and the return flow gap 7 have a narrow and deep shape. It is necessary to ensure that the hands cannot extend into the gap or touch the power supply slot 1 and the return slot 2, so as to eliminate the possibility of electric shock with bare hands. Insulation base 3 And insulating cover 4 has certain intensity, promptly certain rigidity and plasticity, and it is advisable to select glass fiber reinforced plastics usually.The rigidity of insulating base 3 should be enough to support power supply groove 1 and return flow groove 2 and from the power supply rod 8 and return flow rod that rub against it 9 pressure; insulating shield 4 also has certain strength, can bear the occasional rolling of vehicle.Utilize the plasticity of insulating base 3 and insulating shield 4, power supply tank 1 and return groove 2 can be embedded in insulating base 3 and insulating shield The joint part of the cover 4. The insulating ferrule 10 only plays an insulating role, and can be made of general rubber, resin and other materials.

The vehicle traveling on this line can adopt dual-source bus, so that the crossing that is not convenient to use the utility model can pass smoothly, attractive in appearance.

Claims (3)

1. the road surface power-supply structure of a rapid transit system, including the car body (11) of vehicle, drive mechanism (12) and road surface (5), it is characterised in that: the power supply band that face (5) extending direction continuous laying is made up of groove of powering (1), backflash (2), insulator foot (3) and insulating shield (4) by the way；The top of insulator foot (3) is provided with insulating shield (4), power supply gap (6) and backflow gap (7) is formed respectively between upper surface and the lower surface of insulating shield (4) both sides of insulator foot (3) both sides, power supply groove (1) is laid on the top of power supply gap (6), and backflash (2) is laid on the top of backflow gap (7)；It is hinged on carbody (11) on the chassis of drive mechanism for vehicle (12) by insulating ferrule (10) respectively for electric pole (8) and backflow bar (9), and at an acute angle in lower section roll over upward, it is respectively protruding into power supply gap (6) and refluxes in gap (7)；Head end for electric pole (8) is connected with one end of drive mechanism for vehicle (12) input port, contacts with power supply groove (1) for electric pole (8) end；The head end of backflow bar (9) is connected with the other end of drive mechanism for vehicle (12) input port, and the end of backflow bar (9) contacts with backflash (2)；Through power supply groove (1), constitute current supply circuit for electric pole (8), drive mechanism for vehicle (12), backflow bar (9), backflash (2).

The road surface power-supply structure of a kind of rapid transit system the most according to claim 1, it is characterised in that: described confession electric pole (8) and backflow bar (9) are all surrounded by insulated hull in addition to end.

The road surface power-supply structure of a kind of rapid transit system the most according to claim 1, it is characterised in that: ride in power supply band in vehicle both sides wheel (13) being in road surface (5).