A lower contact third rail current collector with air pressure regulating contact force

Abstract

The invention discloses a lower contact third rail current collector with air pressure regulating contact force, comprising a cable assembly, a carbon slide assembly, a carbon slide connecting plate, a boot arm plate, an articulated assembly one, a stretching assembly, an articulated assembly two, an articulated assembly three, a base and an insulator, wherein one side of the top of the boot arm plate is articulated with the base through an articulated assembly one, the carbon slide assembly is installed on the other side of the top of the boot arm plate through a carbon slide connecting plate, the top of the boot arm plate between the base and the carbon slide assembly is articulated with the output end of the stretching assembly through an articulated assembly two, the tail end of the stretching assembly is articulated with the base through an articulated assembly three, the insulator is installed on the base, and the two ends of the cable assembly are respectively connected to the insulator and the carbon slide connecting plate; the invention has a simple structure and effectively avoids the interference of the third rail protective cover on the current collector; the stability of the contact force between the carbon slide and the third rail is ensured by accurately adjusting the cylinder pressure, the relationship between the boot and the rail is effectively improved, and the current receiving capacity is greatly improved.

Description

Technical Field

[0001] The invention relates to a current collector that ensures stable contact force between a carbon slide plate and a third rail by precisely adjusting cylinder pressure, and in particular to a lower contact third rail current collector that adjusts contact force by air pressure, belonging to the technical field of rail transportation. Background Art

[0002] Rail transit is becoming more and more popular with its advantages such as speed, punctuality, large capacity, low energy consumption and less pollution. The contact rail system is widely used in electrified rail transit because of its large current carrying capacity and low maintenance cost. The contact rail power supply system is a power supply method that transmits the electric energy on the transmission line to the vehicle through the current collector installed on the vehicle bogie. For a qualified current collector, it is required to always maintain a stable contact force with the power supply contact rail during the movement. Too large or too small contact force will affect the current collection quality, increase the wear of the current collector carbon slide and the power supply contact rail, and increase the operation and maintenance costs. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a lower contact third rail current collector with air pressure regulating contact force, which has a simple structure and effectively avoids the interference of the third rail protective cover on the current collector; the stability of the contact force between the carbon slide plate and the third rail is ensured by accurately adjusting the cylinder pressure, the shoe-rail relationship is effectively improved, and the current collecting capacity is greatly improved; a rigid connection is adopted between the base of the current collector and the bogie, which increases the reliability of installation; a weak connection structure is provided on the shoe arm plate of the current collector, and when the current collector hits an obstacle, the weak connection structure is disconnected to protect the main part of the current collector from damage and reduce losses; shock absorber devices are provided at the hinges between the various components of the current collector to effectively absorb the vibration generated by the train during operation.

[0004] The technical solution adopted by the present invention is:

[0005] A lower contact third rail current collector for regulating contact force of air pressure comprises a cable assembly, a carbon slide assembly, a carbon slide connecting plate, a boot arm plate, a hinge assembly 1, a stretching assembly, a hinge assembly 2, a hinge assembly 3, a base and an insulator, wherein one side of the top of the boot arm plate is hinged to the base through a hinge assembly 1, the carbon slide assembly is installed on the other side of the top of the boot arm plate through a carbon slide connecting plate, the top of the boot arm plate between the base and the carbon slide assembly is hinged to the output end of the stretching assembly through a hinge assembly 2, the tail end of the stretching assembly is hinged to the base through a hinge assembly 3, the insulator is installed on the base, and the two ends of the cable assembly are respectively connected to the insulator and the carbon slide connecting plate.

[0006] As a further preferred embodiment of the present invention, the stretching assembly is a cylinder, which is connected to an external air circuit through an air pipe, and the air pressure inside the cylinder is controlled by a precision pressure regulating valve in the external air circuit, so that the output end of the cylinder extends to push the boot arm plate or retracts to pull the boot arm plate; after the adjusted and stabilized gas is input into the cylinder, the output end of the cylinder outputs a stable pulling force to the boot arm plate, thereby ensuring the contact force between the carbon slide board assembly and the third rail, which is constant within the range of movement of the carbon slide board assembly, greatly improving the current-carrying capacity, and significantly reducing the electrical wear of the carbon slide board assembly.

[0007] As a further preference of the present invention, a weak connection structure is provided on the boot arm plate between the stretching assembly and the carbon slide assembly; when the carbon slide assembly of the current receiver collides with an obstacle, the weak connection structure on the boot arm plate will be disconnected to avoid causing greater losses.

[0008] As a further preferred embodiment of the present invention, the material of the boot arm plate is a composite insulating material, so that the base part of the current collector is not charged as a whole; and because the boot arm plate is not charged and is not conductive, a conductor accidentally dropped from the vehicle will not cause a safety accident to the current collector.

[0009] As a further preferred embodiment of the present invention, the base is rigidly connected to the vehicle bogie, thereby increasing the reliability of the installation.

[0010] As a further preferred embodiment of the present invention, the hinges of the hinge assembly 1, the hinge assembly 2 and the hinge assembly 3 are all provided with shock absorber devices, so as to prevent the vibration generated by the carbon slide assembly and the third rail from being introduced into the current collector base and the vehicle, thereby increasing the fatigue resistance of the joint parts of the current collector and extending the service life of the current collector.

[0011] As a further preferred embodiment of the present invention, the cable assembly is a flexible cable, which reduces the influence of the cable stress on the contact force of the carbon slide plate and reduces the manufacturing cost of the current collector.

[0012] The beneficial effects of the present invention are as follows: the structure is simple, and the interference of the third rail protection cover on the current collector is effectively avoided; the contact force between the carbon slide plate and the third rail is stabilized by accurately adjusting the cylinder pressure, the shoe-rail relationship is effectively improved, and the current collecting capacity is greatly improved; the base of the current collector and the bogie are rigidly connected, which increases the reliability of installation; the shoe arm plate of the current collector is provided with a weak connection structure, and when the current collector hits an obstacle, the weak connection structure is disconnected to protect the main part of the current collector from damage and reduce losses; shock absorber devices are provided at the hinges between the various components of the current collector to effectively absorb the vibration generated by the train during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view structural schematic diagram of the present invention;

[0014] Figure 2 It is a side view structural schematic diagram of the present invention;

[0015] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] The main reference numerals in the figure have the following meanings:

[0018] 1-cable assembly, 2-carbon skateboard assembly, 3-carbon skateboard connecting plate, 4-boot arm plate, 5-hinge assembly one, 6-tension assembly, 7-hinge assembly two, 8-hinge assembly three, 9-base, 10-insulator. DETAILED DESCRIPTION

[0019] The present invention will be specifically described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-4 As shown: This embodiment is a lower contact third rail current collector of air pressure regulating contact force, including a cable assembly 1, a carbon slide assembly 2, a carbon slide connecting plate 3, a boot arm plate 4, an articulated assembly 1 5, a tensile assembly 6, an articulated assembly 2 7, an articulated assembly 3 8, a base 9 and an insulator 10. One side of the top of the boot arm plate 4 is hinged to the base 9 through an articulated assembly 1 5, the carbon slide assembly 2 is installed on the other side of the top of the boot arm plate 4 through the carbon slide connecting plate 3, the top of the boot arm plate 4 between the base 9 and the carbon slide assembly 2 is hinged to the output end of the tensile assembly 6 through the articulated assembly 2 7, the tail end of the tensile assembly 6 is hinged to the base 9 through the articulated assembly 3 8, the insulator 10 is installed on the base 9, and the two ends of the cable assembly 1 are respectively connected to the insulator 10 and the carbon slide connecting plate 3.

[0021] The stretching component 6 in this embodiment is a cylinder, which is connected to the external air circuit through an air pipe, and the air pressure inside the cylinder is controlled by a precision pressure regulating valve in the external air circuit, so that the output end of the cylinder extends to push the boot arm plate 4 or retracts to pull the boot arm plate 4; after the adjusted and stabilized gas is input into the cylinder, the output end of the cylinder outputs a stable pulling force to the boot arm plate 4, thereby ensuring the contact force between the carbon slide assembly 2 and the third rail, which is constant within the range of movement of the carbon slide assembly 2, greatly improving the current-carrying capacity, and significantly reducing the electrical wear of the carbon slide assembly 2.

[0022] In this embodiment, a weak connection structure is provided on the boot arm plate 4 located between the stretching assembly 6 and the carbon slide assembly 2; when the carbon slide assembly 2 of the current receiver collides with an obstacle, the weak connection structure on the boot arm plate 4 will be disconnected to avoid causing greater losses.

[0023] The material of the shoe arm plate 4 in this embodiment is a composite insulating material, so that the base 9 of the current collector is not charged as a whole; and because the shoe arm plate 4 is not charged and is not conductive, the conductor accidentally dropped from the vehicle will not cause a safety accident to the current collector.

[0024] When this embodiment is installed on a vehicle, the base 9 and the vehicle bogie are rigidly connected, thereby increasing the reliability of the installation.

[0025] In this embodiment, shock absorber devices are provided at the hinges of hinge assembly 1 5, hinge assembly 2 7 and hinge assembly 3 8, so as to prevent the vibration generated by the carbon slide assembly 2 and the third rail from being introduced into the current collector base 9 and the vehicle, thereby increasing the fatigue resistance of the joint parts of the current collector and extending the service life of the current collector.

[0026] The cable assembly 1 in this embodiment is a flexible cable; it reduces the influence of cable stress on the contact force of the carbon slide plate and reduces the manufacturing cost of the current collector; in actual application, the cable assembly 1 can adopt the ultra-flexible cable currently on the market, so that the cable assembly 1 can better cooperate with the movement changes of the boot arm plate 4 and improve the conductive efficiency of the cable assembly 1.

[0027] When this embodiment is in use, the base 9 of the current collector is rigidly connected to the vehicle bogie, the cylinder is connected to the external air circuit through an air pipe, and the air pressure inside the cylinder is controlled by a precision pressure regulating valve in the external air circuit, so that the output end of the cylinder drives the shoe arm plate 4 to move, and the shoe arm plate 4 outputs a stable pulling force to the carbon slide plate assembly 2, thereby ensuring the contact force between the carbon slide plate assembly 2 and the third rail, and improving the current receiving capacity; the overall structure is simple, easy to control, and reduces operation and maintenance costs.

[0028] The invention has a simple structure and effectively avoids the interference of the third rail protection cover on the current collector; the contact force between the carbon slide plate and the third rail is stabilized by accurately adjusting the cylinder pressure, the shoe-rail relationship is effectively improved, and the current collecting capacity is greatly improved; the base of the current collector and the bogie are rigidly connected, which increases the reliability of installation; the shoe arm plate of the current collector is provided with a weak connection structure, when the current collector hits an obstacle, the weak connection structure is disconnected to protect the main part of the current collector from damage and reduce losses; shock absorber devices are provided at the hinges between the various components of the current collector to effectively absorb the vibration generated by the train during operation.

[0029] The above is only a preferred implementation of the patent of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the patent of the present invention. These improvements and modifications should also be regarded as the scope of protection of the patent of the present invention.

Claims

1. A lower contact third rail current collector for regulating contact force by air pressure, characterized in that: It includes a cable assembly, a carbon slide assembly, a carbon slide connecting plate, a boot arm plate, an articulated assembly 1, a stretching assembly, an articulated assembly 2, an articulated assembly 3, a base and an insulator, wherein one side of the top of the boot arm plate is articulated with the base through an articulated assembly 1, the carbon slide assembly is installed on the other side of the top of the boot arm plate through the carbon slide connecting plate, the top of the boot arm plate between the base and the carbon slide assembly is articulated with the output end of the stretching assembly through an articulated assembly 2, the tail end of the stretching assembly is articulated with the base through an articulated assembly 3, the insulator is installed on the base, and the two ends of the cable assembly are respectively connected to the insulator and the carbon slide connecting plate; the articulated joints of the articulated assembly 1, the articulated assembly 2 and the articulated assembly 3 are all provided with shock absorber devices; The stretching component is a cylinder, which is connected to an external air circuit through an air pipe, and the air pressure inside the cylinder is controlled by a precision pressure regulating valve in the external air circuit, so that the output end of the cylinder extends to push the boot arm plate or retracts to pull the boot arm plate; wherein, after the adjusted and stabilized gas is input into the cylinder, the output end of the cylinder outputs a stable pulling force to the boot arm plate, ensuring that the contact force between the carbon slide assembly and the third rail is constant within the range of movement of the carbon slide assembly.

2. A lower contact third rail current collector for regulating contact force of air pressure according to claim 1, characterized in that: A weak connection structure is arranged on the boot arm plate between the stretching assembly and the carbon slide plate assembly.

3. A lower contact third rail current collector for regulating contact force of air pressure according to any one of claims 1-2, characterized in that: The material of the boot arm plate is composite insulating material.

4. A lower contact third rail current collector for regulating contact force of air pressure according to claim 1, characterized in that: The base is rigidly connected to the vehicle bogie.

5. A lower contact third rail current collector for regulating contact force of air pressure according to claim 1, characterized in that: The cable assembly is a flexible cable.

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