A lightning protection device for a trolleybus

Abstract

The present invention discloses a lightning protection device for a trolleybus, comprising: a first current collector pole; a second current collector pole, the second current collector pole being arranged in parallel with the first current collector pole; a composite spacer insulator, one end of the composite spacer insulator being connected to the first current collector pole and the other end being slidably connected to the second current collector pole; a lightning arrester, the lightning arrester being arranged on the composite spacer insulator; a disconnector, the disconnector being connected to the lightning arrester. This lightning protection device for a trolleybus solves the problem that it is difficult for existing trolleybuses to handle overvoltage.

Description

Technical Field

[0001] The present invention belongs to the technical field of urban trolleybus equipment, and particularly relates to a lightning protection device for trolleybuses. Background Art

[0002] Currently, large and medium-sized cities are actively developing environmentally friendly DC 750V trolleybuses with low noise and no pollution for building green travel. This type of vehicle receives the traction network power through two pantographs. Since the vehicle has no dedicated driving lane and mixes with other means of transportation on the road, when it brakes frequently or makes an emergency avoidance and turning during driving, due to the inertial effect, the pantograph is prone to jump wire (i.e., the pantograph is separated from the traction wire network), generating a surge overvoltage. In addition, when the trolleybus is driving under lightning weather disasters, it is also attacked by lightning and generates an overvoltage.

[0003] At present, when designing the electrical system of trolleybuses, lightning arresters have been considered to protect electrical equipment and absorb the energy of overvoltage. However, the installation position of the lightning arrester on the roof is relatively crowded. Once the lightning arrester fails, the pressure release will be unsafe, and the automatic disconnection of the lightning arrester from operation will endanger the surrounding equipment and cause property losses. In addition, the existing trolleybus pantographs are not fixed with spacer dampers, and the pantograph jumping rate often occurs during emergency avoidance and turning during driving, which is prone to generating surge overvoltages. The main reason is that compression springs are installed at the roots of the two pantographs used as positive and negative electrodes. When the vehicle makes an emergency avoidance and turning, there is a certain centrifugal force. Therefore, the two pantographs need to ensure relatively accurate synchronization and horizontal parallel jumping during operation. Summary of the Invention

[0004] The purpose of the present invention is to provide a lightning protection device for trolleybuses to solve the problem that it is difficult for existing trolleybuses to handle overvoltage.

[0005] To solve the above problems, the present invention discloses a lightning protection device for trolleybuses, including:

[0006] A first pantograph;

[0007] A second pantograph, the second pantograph is arranged in parallel with the first pantograph;

[0008] A composite spacer insulator, one end of the composite spacer insulator is connected to the first pantograph, and the other end is slidably connected to the second pantograph;

[0009] A lightning arrester, the lightning arrester is arranged on the composite spacer insulator;

[0010] A disconnector, the disconnector is connected to the lightning arrester.

[0011] The technical solution of the present invention further has the following characteristics:

[0012] Further, a first hoop is provided on the first collector pole, and one end of the composite spacer insulator is connected to the first hoop.

[0013] Further, a plurality of second hoops are provided on the second collector pole, a parallel pole is provided between the plurality of second hoops, a slider is slidably provided on the parallel pole, and the slider is connected to the other end of the composite spacer insulator.

[0014] Further, the number of the second hoops is two.

[0015] Further, both ends of the composite spacer insulator are respectively connected to the first hoop and the slider through connectors.

[0016] Further, the connector is a U-shaped connector.

[0017] Further, the two connectors are respectively connected to the first hoop and the slider through pin rods.

[0018] Further, an arc-shaped contact surface matching the outer contour of the second collector pole is provided on the side of the slider.

[0019] Further, the lightning arrester is a DC lightning arrester.

[0020] Further, the model of the lightning arrester is LyH10WG-1.2 / 2.4, and the model of the disconnector is WSTLQ-1.

[0021] Compared with the prior art, the principle of a trolleybus lightning protection device of the present invention is to connect two collector poles on the trolleybus through a composite spacer insulator. Such a design can ensure that when the trolleybus makes emergency avoidance and turning operations during driving, the two collector poles will not swing up and down due to inertia, always maintaining the spacing distance between the collector poles, and controlling the collector poles from suddenly going offline and generating surge overvoltage; the lightning arrester and the disconnector are installed on the composite spacer insulator, which can ensure the absorption of overvoltage and surge voltage generated by the atmosphere; the trolleybus lightning protection device has a simple overall structure, is easy to manufacture, has a low cost, and has a good market promotion and application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic structural diagram of a trolleybus lightning protection device of the present invention.

[0024] In the figure: 1. First collector pole, 2. First hoop, 3. Joint, 4. Lightning arrester, 5. Third hoop, 6. Disconnector, 7. Composite spacer insulator, 8. Cable, 9. Pin rod, 10. Slide block, 11. Parallel rod, 12. Second hoop, 13. Second collector pole. Detailed implementation mode

[0025] The following will elaborate on the implementation mode of the present invention in conjunction with embodiments, so as to fully understand how the present invention uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0026] As Figure 1 shown, a trolleybus lightning protection device of the present invention includes:

[0027] A first collector pole 1;

[0028] A second collector pole 13, and the second collector pole 13 is arranged in parallel with the first collector pole 1;

[0029] A composite spacer insulator 7, one end of the composite spacer insulator 7 is connected to the first collector pole 1, and the other end is slidably connected to the second collector pole 13;

[0030] A lightning arrester 4, and the lightning arrester 4 is arranged on the composite spacer insulator 7;

[0031] A disconnector 6, and the disconnector 6 is connected to the lightning arrester 4.

[0032] As Figure 1 shown, compared with the prior art, the principle of a trolleybus lightning protection device of the present invention is that the two collector poles on the trolleybus (i.e., the first collector pole 1 and the second collector pole 13) are connected together through the composite spacer insulator 7. Such a design can ensure that during emergency avoidance and turning operations when the trolleybus is running, the two collector poles will not swing up and down due to inertia, always maintaining the distance between the collector poles, controlling the collector poles not to suddenly go offline, thereby avoiding the generation of surge overvoltage.

[0033] The lightning arrester 4 and the disconnector 6 are arranged on the composite spacer insulator 7, closest to the traction network, which can quickly absorb the impact energy of atmospheric overvoltage and surge overvoltage. At the same time, it saves the electrical layout space inside or on the roof of the vehicle and avoids the release of impact energy endangering the surrounding electrical equipment when the lightning arrester 4 is damaged and fails. When the lightning arrester 4 fails, the disconnector 6 also responds to quickly isolate the power supply, making the lightning arrester 4 withdraw from operation, avoiding the long-term short-circuit current from burning out the traction network wire and the collector shoe carbon brush. After the disconnector 6 withdraws, a disconnection point warning is formed with the lightning arrester 4. At this time, the trolleybus lightning protection device only becomes the composite spacer insulator 7.

[0034] As Figure 1As shown in the figure, in a lightning protection device for a trolleybus according to the present invention, a first clamping hoop 2 is provided on a first current collector pole 1, and one end of a composite spacer insulator 7 is connected to the first clamping hoop 2.

[0035] After the first clamping hoop 2 is sleeved on the first current collector pole 1, it is fastened by bolts, and then one end of the composite spacer insulator 7 is connected to the first clamping hoop 2. This design facilitates the rapid assembly between the composite spacer insulator 7 and the first current collector pole 1.

[0036] As Figure 1 shown in the figure, in a lightning protection device for a trolleybus according to the present invention, a plurality of second clamping hoops 12 are provided on a second current collector pole 13, a parallel rod 11 is arranged between the plurality of second clamping hoops 12, and a slider 10 is slidably arranged on the parallel rod 11. The slider 10 is connected to the other end of the composite spacer insulator 7.

[0037] As a preferred sliding installation method between the composite spacer insulator 7 and the second current collector pole 13, a plurality of second clamping hoops 12 can be sleeved on the second current collector pole 13, and then the second clamping hoops 12 are fastened by bolts. The parallel rod 11 is installed between the plurality of second clamping hoops 13, and a slider 10 is sleeved on the parallel rod 11. The slider 10 is connected to the other end of the composite spacer insulator 7, and the sliding installation between the composite spacer insulator 7 and the second current collector pole 13 can be realized. This assembly method can ensure that the composite spacer insulator 7 can slide within a certain small range with the second current collector pole 13 as a reference to ensure that a certain spacing distance is always maintained between the first current collector pole 1 and the second current collector pole 13.

[0038] As Figure 1 shown in the figure, in a lightning protection device for a trolleybus according to the present invention, the number of the second clamping hoops 13 is two.

[0039] Both ends of the parallel rod 11 are respectively arranged in the two second clamping hoops 13. On the one hand, it can ensure the stability after installation, and on the other hand, it can reserve a large installation space for the assembly of the slider 10 to ensure that it can slide within a certain range.

[0040] As Figure 1 shown in the figure, in a lightning protection device for a trolleybus according to the present invention, both ends of the composite spacer insulator 7 are respectively connected to the first clamping hoop 2 and the slider 10 through connectors 3, which is convenient for rapid assembly and also convenient for later maintenance and replacement.

[0041] As Figure 1 shown in the figure, in a trolleybus insulator according to the present invention, the connector 3 is a U-shaped connector, and the two connectors 3 are respectively connected to the first clamping hoop 2 and the slider 10 through pin rods 9, which is convenient for rapid replacement.

[0042] As Figure 1As shown, in an insulator of a trolleybus according to the present invention, an arc-shaped contact surface matching the outer contour of the second current collector pole 13 is provided on the side of the slider 10.

[0043] The side of the slider 10 is closely attached to the outer part of the second current collector pole 13, which can ensure the stability of the sliding of the slider 10.

[0044] As Figure 1 shown, in a lightning protection device of a trolleybus according to the present invention, a third hoop 5 is provided on the lightning arrester 4, and the disconnector 6 is fixed on the lightning arrester 4 by being connected to the third hoop 5, and the cable of the disconnector 6 is fixed on any one of the second hoops 12.

[0045] In summary, a lightning protection device of a trolleybus according to the present invention has a simple overall structure, is easy to manufacture, has a low cost, and has a good prospect of market promotion and use.

[0046] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention should fall within the protection scope of the appended claims of the invention.

Claims

1. A lightning protection device for a trolleybus, characterized in that, Comprising: A first collector pole (1); A second collector pole (13), the second collector pole (13) being arranged in parallel with the first collector pole (1); A composite spacer insulator (7), one end of the composite spacer insulator (7) being connected to the first collector pole (1) and the other end being slidably connected to the second collector pole (13); A lightning arrester (4), the lightning arrester (4) being arranged on the composite spacer insulator (7); A disconnector (6), the disconnector (6) being connected to the lightning arrester (4); A first hoop (2) is provided on the first collector pole (1), and one end of the composite spacer insulator (7) is connected to the first hoop (2); A plurality of second hoops (12) are provided on the second collector pole (13), a parallel rod (11) is arranged between the plurality of second hoops (12), a slider (10) is slidably arranged on the parallel rod (11), and the slider (10) is connected to the other end of the composite spacer insulator (7); The number of the second hoops (12) is two; Both ends of the composite spacer insulator (7) are respectively connected to the first hoop (2) and the slider (10) through connectors (3); The connector (3) is a U-shaped connector; The two connectors (3) are respectively connected to the first hoop (2) and the slider (10) through pin rods (9); A third hoop (5) is provided on the lightning arrester (4), the disconnector (6) is fixed to the lightning arrester (4) through the third hoop (5), and the cable of the disconnector (6) is fixed to any one of the second hoops (12).

2. The trolleybus lightning protection device according to claim 1, characterized in that, An arc-shaped contact surface matching the outer contour of the second collector pole (13) is provided on the side of the slider (10).

3. The trolleybus lightning protection device according to claim 2, characterized in that, The lightning arrester (4) is a DC lightning arrester.

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