CN205468618U - Trolley bus structure of supplying power - Google Patents

Abstract

The utility model discloses a trolley bus structure of supplying power relates to urban public transport power supply technical field. Including the current collection mechanism of pulling net and trolley bus 1, pulling the net and compriseing power supply line 2 and backward flow line 3, the power supply line is built on stilts to be set up, and the backward flow line lays in the road surface, current collection mechanism comprises last trolley pole 4 and lower trolley pole 5, upward the trolley pole end is articulated with the base at trolley bus carriage top, and the top rubs with the power supply line gomphosis and receives the electricity, and lower trolley pole top is articulated with the base on trolley bus carriage chassis, and terminal and return current wire top gomphosis friction receives. Pull the net and gain electric power from the electric substation, through the power supply line, go up trolley pole, actuating mechanism 6, trolley pole and backward flow line constitution power supply loop supply power for trolley bus down. The public transportation systems of mainly used city trolley bus.

Description

A trolleybus power supply structure

technical field

The utility model relates to the technical field of urban public traffic power supply, in particular to a trolley bus power supply technology.

Background technique

At present, urban trolleybuses still use overhead power grids to take power. Existing trolleybuses use a pair (double) contact line and a pair (double) collector pole (commonly known as braid) mode, which greatly increases the complexity and contact of the catenary. It is difficult to receive power between the line (supply line) and the collector pole. In order not to cause a short circuit, an insulating transition area needs to be set up when the two lines cross at the intersection. The tram needs to pass through without power, so the tram loses power. affect operation.

Taking advantage of the single-phase traction power supply system's advantages of simple structure, low construction cost, and convenient operation and maintenance, the main line electrified railway generally adopts a relatively high voltage (27.5kV) single-phase power-frequency AC system, while urban subways, light rails and trams Public transportation such as rails and trolleybuses generally adopt a lower voltage direct current system. Urban subways, light rails and other rail transit generally use DC traction power supply with a rated voltage of 750V or 1500V, and the rated voltage of rail and trolleybuses is 750V or even lower. However, it also has the advantage that the traction network between substations can be connected to avoid power supply breakpoints. Among them, compared with double-track trams and monorails, trolleybuses are widely welcomed because of their low primary cost, no change of road surface, and flexibility and convenience. In the future, urban public transportation congestion and pollution will become more and more severe. Increasing transport capacity, improving efficiency, and reducing pollution are the fundamental solutions to the problem. In order to avoid the disadvantages of large one-time energy consumption and serious urban pollution of traditional urban public transportation, the use of electric traction is the most realistic choice, and it is very necessary and important to choose a trolleybus power supply structure that overcomes the above shortcomings.

Contents of the invention

The purpose of this utility model is to provide a trolley bus power supply structure, which can effectively solve the problem of power receiving difficulty caused by a pair of contact wires and a pair of collector poles adopted by the current trolley bus.

The utility model solves the technical problem, and the adopted technical scheme is: a trolleybus power supply structure, including a traction network and a trolleybus current collection mechanism, a power supply line and a return line to form a traction network, and the power supply line is a single line, which is set overhead , the return line is also a single line, which is laid on the road surface; the upper collector pole arranged on the top of the trolleybus car and the lower collector pole arranged at the bottom of the trolleybus car constitute the collector mechanism of the trolleybus; the end of the upper collector pole and the trackless The base on the top of the tram car is hinged, and the top is fitted with the power supply line; the top of the lower collector pole is hinged with the base of the chassis of the trolleybus car, and the end is fitted with the top of the return line; The power supply line, the upper collector rod on the top of the trolleybus car, the driving mechanism, the lower collector rod and the return line constitute a power supply circuit.

The cross section of the return line is an inverted T shape, the top of the return line and the end of the lower collector rod are semicircular in shape, and the T-shaped bottom of the return line is fixed to the road surface.

The working principle of the utility model is: the traction network is led out from the output end of the substation, and the power supply circuit is formed by the power supply line, the upper collector pole, the drive mechanism, the lower collector pole and the return line to supply power to the trolley bus; High resistivity prevents the formation of stray currents (stray currents) like subways.

It can simply and better connect the traction network on the entire urban road to implement power supply, avoid the disadvantages of trams passing through intersections due to power outages and stop affecting operation, and at the same time use the high resistivity of pavement materials to prevent miscellaneous traffic such as subways. Insulation layer can be laid when necessary to prevent the dissipated current (misleading current) and its electrochemical corrosion to underground metal pipelines.

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

1. The utility model can greatly simplify the suspension structure of the double contact wires used in the traditional trolleybus, and can realize the intersection of lines without setting a power-off zone, and at the same time, it does not cause stray current.

2. The return line of the utility model is fixed on the road surface, and its height is limited, so that it does not affect the passage of other vehicles, bicycles and pedestrians. Three, the utility model is all-weather, not affected by rain and road surface water. 4. The invention has the advantages of simple structure, low construction cost, high reliability, low operation cost, environmental protection, easy implementation, and can be widely used in urban public transportation.

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

Description of drawings

Fig. 1 is a schematic diagram of the power supply structure of the utility model

Fig. 2 is a schematic diagram of the structure of the return line with an insulating layer of the present invention

Fig. 3 is the schematic diagram of the cross-section (left view) of the return line of the present utility model

detailed description

Embodiment Fig. 1 is a schematic diagram of the power supply structure of a trolley bus according to an embodiment of the utility model. A power supply structure for a trolleybus, comprising a traction network and a current collection mechanism of a trolleybus 1; the traction network is composed of a power supply line 2 and a return line 3, and the current collection mechanism is composed of an upper collector rod 4 and a lower collector rod 5; the power supply The line 2 is set overhead, and the return line 3 is laid on the road; the end of the upper collector pole 4 is hinged with the base on the top of the trolleybus 1 compartment, and the "boot" at the top is fitted with the circular power supply line 2 and is subject to friction. Electricity; The top of the lower collector rod 5 is hinged with the base of the trolley bus 1 compartment chassis, and the end is fitted with the semicircular top of the return line 3 to receive electricity by friction. The current of the traction network is drawn from the output terminal of the substation 7, and supplies power to the trolleybus 1 through the power supply line 2, the upper collector pole 4, the drive mechanism 6, the lower collector pole 5 and the return line 3 to form a power supply circuit; 3 fixed on the road. The upper and lower collector poles can swing laterally within a certain range along with the carriage of the trolley bus. The "boot" at the top of the upper collector rod 4 and the fitting part of the power supply line 2 is a conductor, and is connected with the lead that is introduced into the compartment along the upper collector rod 4. Fig. 2 shows the structure of the return line 3 with an insulating layer in the embodiment of the present invention. The return line 3 is fixed on the ground through the insulating layer 8, which can completely prevent the formation of underground stray currents, and the others are the same as in FIG. 1 .

Fig. 3 shows a cross-sectional diagram (left view) of the return line of the embodiment of the utility model. The cross-section of the return line 3 is inverted T-shaped, with a semicircular top, fitted with the end of the lower collector pole 5, and the inverted T-shaped bottom of the return line 3 is fixed on the road surface. The height of the return line 3 is generally 3 or 4 cm, which does not affect the passage of pedestrians and vehicles.

Claims (2)

1. A trolleybus power supply structure, comprising a traction network and a trolleybus (1) collector mechanism, characterized in that: a power supply line (2) and a return line (3) constitute a traction network, and the power supply line (2) is a single wire , installed overhead, the return line (3) is also a single line, laid on the road; the upper collector pole (4) arranged on the top of the trolley bus (1) compartment and the lower collector pole arranged at the bottom of the trolley bus (1) compartment (5) Constitute the current collecting mechanism of the trolleybus (1); the end of the upper collector pole (4) is hinged with the base on the top of the trolleybus (1) compartment, and the top end is fitted with the power supply line (2); the top end of the lower collector pole It is hinged with the base of the chassis of the trolleybus (1), and the end is fitted with the top of the return line (3); the traction network is drawn from the output end of the substation (7), and passes through the power supply line (2), the trolleybus (1) The upper collector rod (4), the driving mechanism (6), the lower collector rod (5) and the return line (3) on the top of the compartment constitute a power supply circuit. 2. A kind of trolley bus power supply structure according to claim 1, is characterized in that: the cross-section of the return line (3) is an inverted T shape, and the top of the return line (3) is connected to the lower collector pole (5) ) is semicircular, and the T-shaped bottom of the return line (3) is fixed to the road surface.