A non-contact power transmission device for railway electric locomotive

Abstract

The present invention discloses a non-contact power transmission device for railway electric locomotives, comprising an electric locomotive, an electromagnetic induction receiving unit is installed on the outer top of the electric locomotive, a load-bearing cable is laid along the railway line above the electric locomotive, an electromagnetic induction transmitting unit is suspended on the load-bearing cable, the power supply coil of the electromagnetic induction transmitting unit generates an alternating magnetic field, and when the electric locomotive passes through the corresponding electromagnetic induction transmitting unit, the pickup coil of the electromagnetic induction receiving unit induces an induced electromotive force, thereby realizing non-contact power supply to the electric locomotive. The present invention can effectively fix the electromagnetic induction receiver on the top of the electric locomotive, and couple it with the electromagnetic induction transmitter suspended on the load-bearing cable to realize power supply to the electric locomotive, and the overall device has the advantages of insulation, shock absorption, and low wind resistance.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation, and in particular to a contactless power transmission device for a railway electric locomotive. Background Art

[0002] At present, the power transmission of railway electric locomotives uses copper or copper alloy and steel-aluminum or aluminum alloy steel-aluminum composite contact wires to transmit electricity to the locomotive. The locomotive pantograph contacts it to receive electricity to make the locomotive motor rotate, thereby driving the entire locomotive to move quickly along the rails. This direct contact power supply method has many problems: the contact wire wears and is repeatedly replaced, and a large amount of precious metals such as copper are wasted; the contact wire sometimes breaks or short-circuits during high-speed friction between the contact wire and the pantograph, causing the locomotive to stop operating or even more serious accidents. The use of non-contact power transmission technology can avoid the above-mentioned various similar accidents and simplify the power supply system.

[0003] Inductive contactless power transfer (ICPT) technology is a technology based on the principle of loosely coupled induction in the near-field electromagnetic field. It comprehensively utilizes power electronic conversion technology, magnetic field coupling technology and control theory to enable electrical equipment to obtain energy from the power grid in a non-wire contact manner. It has the characteristics of flexible power supply, safety and reliability, and low maintenance cost.

[0004] The existing rail transit contactless power supply device mainly consists of: a pickup coil (electromagnetic induction receiver), a controller, a frequency converter and a power supply coil (electromagnetic induction transmitter). The pickup coil is arranged on the locomotive, and the power supply coil is arranged along the railway line. When working, after the locomotive enters the power supply section, the AC-DC-AC frequency converter supplies power to the power supply coil under the control of the controller. The power supply coil generates an alternating magnetic field, and the pickup coil induces an induced electromotive force to realize contactless power supply to the locomotive.

[0005] The problem with contactless power supply is that when the electric locomotive is running at high speed, its vibration will affect the operation of the electromagnetic induction receiver. The electromagnetic induction receiver is fixed on the top of the locomotive, which will bring greater wind resistance to the locomotive, and the power flow generated by the electromagnetic induction receiver will affect the safety of the passengers. Summary of the invention

[0006] Based on the above problems, the purpose of the present invention is to provide a non-contact power transmission device for railway electric locomotives. The present invention adopts the following technical solutions:

[0007] The present invention provides a non-contact power transmission device for railway electric locomotives, comprising an electric locomotive, an electromagnetic induction receiving unit is installed on the top of the electric locomotive, a load-bearing cable is laid along the railway line above the electric locomotive, an electromagnetic induction transmitting unit is suspended on the load-bearing cable, a power supply coil of the electromagnetic induction transmitting unit generates an alternating magnetic field, and when the electric locomotive passes through the corresponding electromagnetic induction transmitting unit, the pickup coil of the electromagnetic induction receiving unit induces an induced electromotive force, thereby realizing non-contact power supply to the electric locomotive;

[0008] The electromagnetic induction receiving unit includes a deflector arranged on the top of the electric locomotive, an insulating base is arranged in the deflector, the insulating base is fixed on the electric locomotive, a detachable connecting plate is arranged on the insulating base, a shock-absorbing base is arranged on the connecting plate, a receiver shield is arranged on the shock-absorbing base, and an electromagnetic induction receiver is arranged in the receiver shield.

[0009] Furthermore, the fairing includes windward sections at both ends and a connecting section in the middle, the windward section is wedge-shaped and fixed to the top of the electric locomotive, one end of the connecting section is hinged to the corresponding windward section, and the other end of the connecting section is connected to the corresponding windward section by a buckle.

[0010] Furthermore, the insulating base includes a bottom plate, and the bottom surface of the bottom plate is connected to the top surface of the electric locomotive through a plurality of supporting insulators.

[0011] Furthermore, lifting ears are arranged around the top surface of the connecting plate to facilitate lifting.

[0012] Furthermore, the shock-absorbing base includes a top plate, and the bottom of the top plate is connected to the connecting plate through a plurality of shock-absorbing parts; the shock-absorbing parts include a shock-absorbing shell, and the shock-absorbing shell is arranged on the connecting plate. The shock-absorbing shell is filled with shock-absorbing glue, and the top of the shock-absorbing glue passes through the reserved hole on the shock-absorbing shell and rests on the bottom surface of the top plate. Studs are arranged in the shock-absorbing glue, and the top ends of the studs pass through the reserved holes on the top plate and are threadedly connected to the nut.

[0013] Furthermore, handles are provided on both side edges of the top plate.

[0014] Furthermore, the electromagnetic induction transmitting unit includes a rainproof top cover, the top of the rainproof top cover is connected to the load-bearing cable through a plurality of suspension insulators, a transmitter housing is arranged below the rainproof top cover, and the electromagnetic induction transmitter is arranged in the transmitter housing.

[0015] Furthermore, a lower clamping block is fixed on the top of the suspension insulator, an upper clamping block is arranged above the lower clamping block, both ends of the upper clamping block and the lower clamping block are connected by bolt assemblies, and grooves for clamping the load-bearing cable are arranged on the opposite surfaces of the upper clamping block and the lower clamping block.

[0016] Furthermore, the load-bearing cables are two steel cables arranged side by side.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The present invention can effectively fix the electromagnetic induction receiver on the top of the electric locomotive, and couple it with the electromagnetic induction transmitter suspended on the load-bearing cable to realize power supply to the electric locomotive. The whole system has the advantages of insulation, shock absorption and low wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 It is a schematic structural diagram of a non-contact power transmission device for a railway electric locomotive according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of an electromagnetic induction receiving unit in an embodiment of the present invention;

[0022] Figure 3 It is a structural schematic diagram of an insulating base in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a shock-absorbing base in an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of a shock absorbing member in an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the electromagnetic induction transmitting unit in an embodiment of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the connection between the suspension insulator and the load-bearing cable in an embodiment of the present invention.

[0027] Explanation of the reference numerals: 1, electric locomotive; 2, electromagnetic induction receiving unit; 201, deflector; 201-1, windward section; 201-2, connecting section; 202, insulating base; 202-1, bottom plate; 202-2, supporting insulator; 203, connecting plate; 203-1, lifting ear; 204, shock-absorbing base; 204-1, top plate; 204-2, shock-absorbing member; 204-2-1, shock-absorbing shell; 204-2-2, shock-absorbing rubber; 204-2-3, stud; 204-3, handle; 205, receiver shield; 3, load-bearing cable; 4, electromagnetic induction transmitting unit; 401, rainproof top cover; 402, hanging insulator; 402-1, lower clamp; 402-2, upper clamp; 402-3, groove; 403, transmitter housing. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0030] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] like Figure 1 As shown, this embodiment discloses a non-contact power transmission device for railway electric locomotives, including an electric locomotive 1, an electromagnetic induction receiving unit 2 is installed on the top of the electric locomotive 1, a load-bearing cable 3 is laid along the railway line above the electric locomotive 1, and an electromagnetic induction transmitting unit 4 is suspended on the load-bearing cable 3. The power supply coil of the electromagnetic induction transmitting unit 4 generates an alternating magnetic field. When the electric locomotive 1 passes through the corresponding electromagnetic induction transmitting unit 4, the pickup coil of the electromagnetic induction receiving unit 2 induces an induced electromotive force, thereby realizing non-contact power supply to the electric locomotive 1;

[0032] like Figure 2 As shown, the electromagnetic induction receiving unit 2 includes a deflector 201 installed on the top of the electric locomotive 1, an insulating base 202 is provided in the deflector 201, the insulating base 202 is fixed on the electric locomotive 1, a detachable connecting plate 203 is provided on the insulating base 202, a shock-absorbing base 204 is provided on the connecting plate 203, a receiver shield 205 is provided on the shock-absorbing base 204, and an electromagnetic induction receiver is provided in the receiver shield 205. It should be noted that the electromagnetic induction receiver includes a pickup coil and electronic components. The electromagnetic induction receiver belongs to the prior art.

[0033] As a possible implementation method, in this embodiment, the fairing 201 can be made of fiberglass. The fairing 201 includes windward sections 201-1 at both ends and a connecting section 201-2 in the middle. The windward section 201-1 is wedge-shaped and is fixed to the top of the electric locomotive 1 by bolts. One end of the connecting section 201-2 is hinged to the corresponding windward section 201-1, and the other end of the connecting section 201-2 is connected to the corresponding windward section 201-1 by a buckle.

[0034] As a possible implementation method, in this embodiment, if Figure 3 As shown, the insulating base 202 includes a bottom plate 202 - 1 , and the bottom surface of the bottom plate 202 - 1 is connected to the top surface of the electric locomotive 1 through a plurality of supporting insulators 202 - 2 .

[0035] In order to facilitate the subsequent separation and connection with the bottom plate 202 - 1 , lifting ears 203 - 1 are provided around the top surface of the connecting plate 203 for easy lifting.

[0036] As a possible implementation method, in this embodiment, if Figure 4 and 5 As shown, the shock-absorbing base 204 includes a top plate 204-1, the bottom of the top plate 204-1 is connected to the connecting plate 203 through a plurality of shock-absorbing members 204-2; the shock-absorbing member 204-2 includes a shock-absorbing shell 204-2-1, the shock-absorbing shell 204-2-1 is fixed to the connecting plate 203 by bolts, the shock-absorbing shell 204-2-1 is filled with shock-absorbing glue 204-2-2, the top of the shock-absorbing glue 204-2-2 passes through the reserved hole on the shock-absorbing shell 204-2-1 and then rests on the bottom surface of the top plate 204-1, and the shock-absorbing glue 204-2-2 is provided with a stud 204-2-3, the top of the stud 204-2-3 passes through the reserved hole on the top plate 204-1 and then is threadedly connected with a nut. In this embodiment, handles 204-3 are provided on both sides of the top plate 204-1 to facilitate later transportation.

[0037] like Figure 6 and 7As shown, the electromagnetic induction transmitting unit 4 includes a rainproof top cover 401, the top of the rainproof top cover 401 is connected to the load-bearing cable 3 through a plurality of suspension insulators 402, a transmitter housing 403 is provided below the rainproof top cover 401, and an electromagnetic induction transmitter is provided in the transmitter housing 403. It should be noted that the electromagnetic induction transmitter includes a transmitting coil and electronic components, and the electromagnetic induction transmitter belongs to the prior art.

[0038] A lower clamping block 402-1 is fixed to the top of the suspension insulator 402, an upper clamping block 402-2 is arranged above the lower clamping block 402-2, both ends of the upper clamping block 402-2 and the lower clamping block 402-1 are connected by bolt assemblies, and grooves 402-3 for clamping the load-bearing cables 3 are arranged on the opposite surfaces of the upper clamping block 402-2 and the lower clamping block 402-1. In this embodiment, the load-bearing cables 3 are two steel cables arranged side by side.

[0039] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A railway electric locomotive contactless power transmission device, comprising an electric locomotive (1), characterized in that: An electromagnetic induction receiving unit (2) is installed on the top of the electric locomotive (1), a load-bearing cable (3) is laid along the railway line above the electric locomotive (1), and an electromagnetic induction transmitting unit (4) is suspended on the load-bearing cable (3). The power supply coil of the electromagnetic induction transmitting unit (4) generates an alternating magnetic field. When the electric locomotive (1) passes through the corresponding electromagnetic induction transmitting unit (4), the pickup coil of the electromagnetic induction receiving unit (2) induces an induced electromotive force, thereby realizing non-contact power supply to the electric locomotive (1); The electromagnetic induction receiving unit (2) comprises a deflector (201) arranged on the top of the electric locomotive (1), an insulating base (202) being arranged in the deflector (201), the insulating base (202) being fixed on the electric locomotive (1), a detachable connecting plate (203) being arranged on the insulating base (202), a shock absorbing base (204) being arranged on the connecting plate (203), a receiver shield (205) being arranged on the shock absorbing base (204), and an electromagnetic induction receiver being arranged in the receiver shield (205); The fairing (201) comprises windward sections (201-1) at both ends and a connecting section (201-2) in the middle, the windward section (201-1) being wedge-shaped and fixed on the top of the electric locomotive (1), one end of the connecting section (201-2) being hinged on the corresponding windward section (201-1), and the other end of the connecting section (201-2) being connected to the corresponding windward section (201-1) via a buckle; The insulating base (202) comprises a bottom plate (202-1), the bottom surface of the bottom plate (202-1) being connected to the top surface of the electric locomotive (1) via a plurality of supporting insulators (202-2); Lifting ears (203-1) are arranged around the top surface of the connection plate (203) to facilitate lifting; The shock-absorbing base (204) comprises a top plate (204-1), the bottom of the top plate (204-1) being connected to the connecting plate (203) via a plurality of shock-absorbing members (204-2); the shock-absorbing member (204-2) comprises a shock-absorbing shell (204-2-1), the shock-absorbing shell (204-2-1) being arranged on the connecting plate (203), the shock-absorbing shell (204-2-1) being filled with shock-absorbing glue (204-2-2), the top of the shock-absorbing glue (204-2-2) passing through a reserved hole on the shock-absorbing shell (204-2-1) and then abutting against the bottom surface of the top plate (204-1), the shock-absorbing glue (204-2-2) being arranged with a stud (204-2-3), the top of the stud (204-2-3) passing through a reserved hole on the top plate (204-1) and then being threadedly connected to a nut; The electromagnetic induction transmitting unit (4) comprises a rainproof top cover (401), the top of the rainproof top cover (401) is connected to the load-bearing cable (3) via a plurality of suspension insulators (402), a transmitter housing (403) is arranged below the rainproof top cover (401), and an electromagnetic induction transmitter is arranged in the transmitter housing (403).

2. The railway electric locomotive contactless power transmission device according to claim 1, characterized in that: Handles (204-3) are provided on both side edges of the top plate (204-1).

3. The railway electric locomotive contactless power transmission device according to claim 1, characterized in that: A lower clamping block (402-1) is fixed on the top of the suspension insulator (402), an upper clamping block (402-2) is arranged above the lower clamping block (402-1), both ends of the upper clamping block (402-2) and the lower clamping block (402-1) are connected by bolt assemblies, and grooves (402-3) for clamping the load-bearing cable (3) are arranged on the opposite surfaces of the upper clamping block (402-2) and the lower clamping block (402-1).

4. The railway electric locomotive contactless power transmission device according to claim 1, characterized in that: The load-bearing cables (3) are two steel cables arranged side by side.

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