CN111409515A - Closed type double-sliding-contact-surface third rail power supply structure - Google Patents

Abstract

The invention discloses a closed type double-sliding-contact-surface third rail power supply structure which comprises a double-sliding-contact-surface contact rail, a protective cover, a current collector arm and a current collector shoe head, wherein two sliding contact surfaces of the double-sliding-contact-surface contact rail are arranged in parallel, the protective cover annularly surrounds the double-sliding-contact-surface contact rail, an opening is formed in one side of the protective cover, one end of the current collector arm extends out of the opening, the other end of the current collector arm is elastically connected with the current collector shoe head, the current collector shoe head is respectively used for being in contact with the two sliding contact surfaces, and the current collector arm can drive the current collector shoe head. When the train is displaced transversely, the collector arm is elastically connected with the collector shoe head and the collector arm, so that the collector arm can be basically kept in the middle of the two sliding contact surfaces and cannot be contacted with the opening of the protective cover, and meanwhile, the contact force of the two sliding contact surfaces is always constant under high-speed movement, and the stable current collection is ensured.

Description

Closed double sliding contact surface third rail power supply structure

technical field

The invention relates to the technical field of rail transit power supply, in particular to a closed double sliding contact surface third rail power supply structure.

Background technique

In the field of ground urban rail transit and tourist rail transit, catenary power supply or third-rail power supply is often used, and the traditional third-rail protective cover cannot completely seal the contact rail. Therefore, for non-completely enclosed lines, the existing third-rail power supply has certain safety hazards, and it is necessary to develop a closed third-rail power supply structure with a higher protection level.

Researchers have carried out a lot of research on this. The Chinese patent with the publication number CN203110950 discloses a segmented power supply safety three-rail, which uses a plurality of magnetic diversion modules to sequentially attract the on-board current receiver of the rail vehicle, and is in the receiving state. The way that the current collector is released in sequence after it leaves, so that each magnetic guide module and the corresponding reverse flow plate below it are only energized during the time period passed by the on-board current collector, so as to realize the local electrification of the safe three rails. The Chinese Patent Publication No. CN201914122 discloses a ground-mounted contact rail power supply system, the system includes a plurality of conductive rails and a plurality of insulating rails, and the plurality of conductive rails are controlled by the on-grid power distribution system to obtain and lose power, so that the train is passing through. The conductor rails are energized to provide power for the train and the conductor rails that the train has not passed and have passed are de-energized. The above technical solutions can theoretically realize the power supply of the conductor rails in sections, to ensure that the conductor rails at the running position of the train are powered and ensure safety. However, in the implementation process of the technical solution, there are problems such as complex technology, difficult implementation, high cost, and poor high-speed adaptability.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a closed double sliding contact surface third rail power supply structure in view of the problems existing in the prior art. The power supply structure of the present invention has the advantages of simpler structure, lower cost and better high-speed adaptability good advantage.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A closed double sliding contact surface third rail power supply structure, comprising a double sliding contact surface contact rail, a protective cover, a collector arm and a collector shoe head, and the two sliding contact surfaces of the double sliding contact surface contact rail are arranged in parallel , the protective cover annularly surrounds the double sliding contact surface contact rail, one side of the protective cover is provided with an opening, one end of the current collector arm extends out of the opening, and the other end of the current collector arm is elastically connected There are collector shoe heads, the collector shoe heads are respectively used for contacting the two sliding contact surfaces, and the collector arm can drive the collector shoe heads to slide along the sliding contact surfaces.

The collector arm is used to connect with the train (which can be a bogie or a car body), and the collector arm and the train have a lateral (perpendicular to the sliding contact surface direction) degree of freedom, and are installed between the two There is a lateral return spring. When the train is running, the train drives the collector arm to move forward, so that the collector arm drives the collector shoe to slide along the sliding contact surface. However, when the train is displaced laterally (perpendicular to the sliding contact surface), due to the lateral freedom between the collector arm and the train, the collector shoe head and the collector arm are elastically connected, and the collector The arm can basically remain in the middle position of the two sliding contact surfaces without coming into contact with the opening of the protective cover. At the same time, it can also ensure that the contact force of the two sliding contact surfaces is always constant under high-speed motion, and the flow is stable. However, because the protective cover annularly surrounds the double sliding contact surface contact rail, only one opening is reserved, thereby improving the protection level of the third rail power supply structure. The power supply structure of the present invention has the advantages of simpler structure, lower cost and better high-speed adaptability.

As a preferred solution of the present invention, it further includes a contact rail mounting fixture and an insulating bracket, the double sliding contact surface contact rail is mounted in the contact rail mounting fixture, the contact rail mounting fixture is mounted on the insulating support, and The protective cover is provided on the outer side of the contact rail mounting fixture.

As a preferred solution of the present invention, the collector shoe is connected with the collector arm through an elastic element.

As a preferred solution of the present invention, the elastic element is a spring.

As a preferred solution of the present invention, the double sliding contact surface contact rail is a double rail structure or a grooved rail.

As a preferred solution of the present invention, each collector shoe is provided with a groove, the collector arm is provided with a protrusion, the protrusion is adapted to the groove, and the protrusion The collector arm can be driven to slide along the slideway formed by the two grooves, so that the collector arm has a certain degree of freedom in the lateral direction.

As a preferred solution of the present invention, a position adjustment device is provided between the contact rail mounting fixture and the insulating support, so that the mounting position of the double sliding contact surface contact rail can be adjusted.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present invention are:

When the train is displaced laterally (perpendicular to the sliding contact surface), due to the lateral freedom between the collector arm and the train, the collector shoe head and the collector arm are elastically connected, and the collector arm is elastically connected. Basically, it can be kept in the middle position of the two sliding contact surfaces, and will not come into contact with the opening of the protective cover. At the same time, it can also ensure that the contact force of the two sliding contact surfaces is always constant under high-speed motion, and the flow is stable. However, because the protective cover annularly surrounds the double sliding contact surface contact rail, only one opening is reserved, thereby improving the protection level of the third rail power supply structure. The power supply structure of the present invention has the advantages of simpler structure, lower cost and better high-speed adaptability.

Description of drawings

FIG. 1 is a cross-sectional view of the double sliding contact surface contact rail of the closed double sliding contact surface third rail power supply structure according to the present invention when the double sliding contact surface contact rail is a double rail structure.

2 is a cross-sectional view of the double sliding contact surface contact rail of the closed double sliding contact surface third rail power supply structure according to the present invention when the double sliding contact surface contact rail is a grooved rail structure.

Icons: 1-insulation bracket, 2-contact rail mounting fixture, 3-double sliding contact surface contact rail, 31-sliding contact surface, 4-protective cover, 5-collector shoe head, 6-collector arm, 7-train , 8-elastic element, 9-bump, 10-groove, 11-transverse return spring.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Example 1

As shown in Figure 1, a closed double sliding contact surface third rail power supply structure includes an insulating bracket 1, a contact rail mounting fixture 2, a double sliding contact surface contact rail 3, a protective cover 4, a collector shoe head 5 and a collector Electric Arm 6.

In this embodiment, the double sliding contact surface contact rail 3 is a double rail structure, each rail is provided with a sliding contact surface 31 respectively, and the two sliding contact surfaces 31 are arranged in parallel and opposite to each other.

The double sliding contact surface contact rail 3 is installed in the contact rail mounting fixture 2, the contact rail mounting fixture 2 is mounted on the insulating support 1, and the contact rail mounting fixture 2 and the insulating support 1 are connected. A position adjusting device may be provided between the two sliding contact surfaces so as to adjust the installation position of the double sliding contact surface contact rail 3 .

The outer side of the contact rail mounting fixture 2 is provided with the protective cover 4, the protective cover ring 4 surrounds the double sliding contact surface contact rail 3, and only one opening is reserved on one side, and the opening is used for The current collector arms 6 are extended.

One end of the collector arm 6 protrudes out of the opening, and is used for connecting with the train 7, and can be connected with the bogie or the body of the train. At the same time, a lateral return spring 11 is provided between the collector arm 6 and the train 7 , and there is a lateral (perpendicular to the sliding contact surface direction) degree of freedom between the collector arm 6 and the train 7 .

The other end of the collector arm 6 is elastically connected with two collector shoe heads 5. Specifically, each of the collector shoe heads 5 is respectively connected with the collector arm 6 through an elastic element 8. The elastic The element 8 includes two springs arranged in parallel. And each of the collector shoe 5 is provided with a groove 10, the collector arm 6 is provided with two bumps 9, the bumps 9 are matched with the groove 10, and the The bump 9 can drive the collector arm 6 to slide along the slideway formed by the two grooves 10 , so that the collector arm 6 has a certain degree of freedom in the direction perpendicular to the sliding contact surface.

The collector shoes 5 are respectively used to contact the two sliding contact surfaces 31. When the train 7 is running, the collector arm 6 can drive the collector shoes 5 along the sliding contact surfaces. 31 Slide forward.

Example 2

As shown in FIG. 2 , the difference between this embodiment and Embodiment 1 is that the double sliding contact surface contact rail 3 is a grooved rail, and the two sliding contact surfaces 31 are disposed on two opposite sides of the grooved rail. On the inner side, the sliding contact surface 31 may also be provided on the inner side of the entire grooved rail.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (7)

1. The utility model provides a closed two smooth face third rail power supply structure, a serial communication port, including two smooth face contact rails, protection casing, current collector arm and current collector boots head, two smooth face parallel arrangement of smooth face contact rail of two, the protection casing surrounds the two smooth face contact rails, one side of protection casing is equipped with the opening, the one end of current collector arm is stretched out the opening, the other end elastic connection of current collector arm has the current collector boots head, the current collector boots head be used for respectively with two the smooth face contacts, the current collector arm can drive the current collector boots head along the smooth face slides.

2. The enclosed type double-sliding-contact-surface third rail power supply structure according to claim 1, further comprising a contact rail mounting fixture and an insulating support, wherein the double-sliding-contact-surface contact rail is mounted in the contact rail mounting fixture, the contact rail mounting fixture is mounted on the insulating support, and the protective cover is arranged outside the contact rail mounting fixture.

3. The enclosed double-wiping-surface third rail supply structure according to claim 1, wherein the collector shoe is connected to the collector arm by an elastic element.

4. The enclosed double-sliding-contact-surface third rail power supply structure according to claim 1, wherein the elastic element is a spring.

5. The enclosed double-sliding-contact-surface third rail power supply structure according to any one of claims 1 to 4, wherein the double-sliding-contact-surface contact rail is a double-rail structure or a groove-type rail.

6. The enclosed double-sliding-contact-surface third rail power supply structure according to any one of claims 1 to 4, wherein each collector shoe is provided with a groove, the collector arm is provided with a protrusion, the protrusion fits into the groove, and the protrusion can drive the collector arm to slide along a slide way formed by the two grooves.

7. The enclosed double-sliding-contact-surface third rail power supply structure according to any one of claims 1 to 4, wherein a position adjusting device is arranged between the contact rail mounting clamp and the insulating bracket.

Images