Current collector and third rail of an outsourcing type third rail power supply system

Abstract

The present invention discloses a current collector and a third rail of an external package type third rail power supply system. The current collector includes a current collector cross arm and a current collector vertical arm which are connected to each other. The current collector cross arm is connected to the train through a first elastic member. The current collector vertical arm is connected with a current collector shoe head. The current collector shoe head includes a second elastic member and two current collecting sliders arranged oppositely. The two current collecting sliders are respectively used for slidingly contacting two side surfaces of a contact rail. The current collecting sliders are hingedly connected to the current collector vertical arm. The second elastic member is used for providing a force towards the contact rail to the current collecting sliders. The side surface of the contact rail is a plane, and the contact surface of the current collecting slider for connecting with the contact rail is also a plane. By adopting this structure, good current collection quality can be maintained both under normal operation conditions and when the current collecting sliders jump, the high-speed adaptability is better, and the power supply stability of the train is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit power supply, and particularly to a current collector and a third rail of an external wrapping type third rail power supply system. Background Art

[0002] According to the different ways of obtaining current by rail trains, the rail transit power supply methods are mainly divided into catenary power supply and contact rail power supply. Among them, the contact rail power supply method has the advantages of low construction cost, less later maintenance, good landscape, etc., and is widely adopted. A current collector is a device installed on the side or bottom of a train bogie in the contact rail power supply method to obtain electric energy for the train from the contact rail. Most of the existing current collector shoes are in single-sided sliding electrical contact with the contact rail. When the module touches a protrusion or a gap jumps, it may affect the stable current collection of the train. At the same time, in most of the current contact rail power supply methods, the contact rail power supply system has poor sealing. Therefore, for lines that require a highly sealed power supply rail, there are certain potential safety hazards in the existing third rail power supply. Summary of the Invention

[0003] The purpose of the present invention is to provide a current collector and a third rail of an external wrapping type third rail power supply system to solve the above deficiencies of the existing current collector shoe in single-sided sliding electrical contact with the contact rail, which may affect the stable current collection of the train and make it difficult to supply power reliably when the module touches a protrusion or a gap jumps.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A current collector of an external wrapping type third rail power supply system includes a current collector cross arm and a current collector vertical arm connected to each other. The current collector cross arm is connected to the train through a first elastic member. The current collector vertical arm is connected with a current collector shoe head. The current collector shoe head includes a second elastic member and two relatively arranged current collection sliders. The two current collection sliders are respectively used for slidingly contacting both sides of the contact rail. The current collection sliders are hingedly connected to the current collector vertical arm. The second elastic member is used to provide a force towards the contact rail to the current collection sliders. The side surface of the contact rail is a plane, and the contact surface of the current collection slider for connecting with the contact rail is also a plane.

[0006] The current collector of an external-sheathed third-rail power supply system according to the present invention uses a flat surface for both the current-collecting slider and the sliding surface of the contact rail. Through planar contact, the contact area can be increased under normal operation conditions to maintain the current collection quality. The ground power supply rail with a double sliding surface is used, and a second elastic component for pressing the current-collecting slider against the contact rail is provided, so that the contact force between the two sliding contact surfaces can always be constant during high-speed movement, ensuring stable current collection. Even when one of the current-collecting sliders touches a protrusion or there is a jump in the gap, the other can still be pressed against the contact rail due to the acting force, maintaining stable current collection for the train, with better high-speed adaptability and improved power supply stability for the train. The cross arm of the current collector is connected to the train through a first elastic component, so that there is a lateral (perpendicular to the sliding surface direction) degree of freedom between the current-collecting shoe head and the train, effectively improving the current collection stability under the conditions of shaking and offset during the driving process.

[0007] Preferably, the current-collecting slider is hingedly connected to the vertical arm of the current collector through a support arm, and the second elastic component is connected between the two support arms.

[0008] More preferably, the second elastic component is in a stretched state in the initial state.

[0009] The initial state is the initial installation state.

[0010] Compared with the existing current-collecting shoe structure that performs sliding friction through active control and the sliding surface of the contact rail, the present application uses passive control of the second elastic component. By keeping the second elastic component stretched in the initial state, it effectively forms extrusion of the current-collecting shoe head against the sliding surface of the contact rail, so that the current-collecting shoe head and the sliding surface of the contact rail maintain stable sliding electrical contact for current drainage. The structure is simple, the cost is lower, the economy of the current collector is improved, and the adaptability performance of the train under high-speed operation is further improved.

[0011] More preferably, the second elastic component includes a sleeve, a spring and a connecting shaft. The sleeve and the connecting shaft are respectively connected to the corresponding support arms. The sleeve is sleeved outside the connecting shaft, the spring is sleeved outside the sleeve, and the connecting shaft can slide along the inner wall of the sleeve. The sleeve and the connecting shaft should be prevented from being completely separated.

[0012] With the above structure, limit sliding is formed through the sleeve and the connecting shaft, which can ensure the reset direction of the spring after the two support arms move relatively away from each other, ensure the contact area between the current-collecting shoe head and the sliding surface, further improve the current collection stability, and at the same time, when passing through a turnout, the presence of the sleeve can prevent the two current-collecting sliders that are separated from the contact rail from colliding.

[0013] Preferably, the current-collecting shoe head further includes a protection slider, and the protection slider is arranged on the front and rear sides of the current-collecting slider.

[0014] Further preferably, the current collector shoe head further includes a shoe head fixture, and a buffer member is provided between the protective slider and the shoe head fixture.

[0015] The protective slider can protect the current collection slider when passing through the elbow at the end of the contact rail. The buffer member is used to effectively provide buffering. At the same time, the protective slider can also remove the ice and rain on the surface of the contact rail in ice and rain weather, which is beneficial to the stable current collection of the train.

[0016] Preferably, the first elastic member is replaced and connected between the current collector cross arm and the current collector vertical arm.

[0017] Further preferably, a diagonal brace is also provided between the current collector cross arm and the train.

[0018] Further preferably, the current collection slider is replaced by a plurality of current collection rollers, and all the current collection rollers are coaxially arranged longitudinally.

[0019] Adopting rolling friction contact can further reduce wear and improve the economy of the current collector. When using current collection rollers, the roller surfaces on the same side are also located in the same plane to ensure that multiple current collection rollers contact the sliding surface simultaneously, improving the current collection stability.

[0020] An external - wrapped third - rail power supply system includes a contact rail and a current collector of the external - wrapped third - rail power supply system as described in any one of the above.

[0021] Adopting the external - wrapped third - rail of the present invention can increase the contact area between the current collector and the double - sided contact rail, has good current collection stability, can reduce space, is beneficial to reducing costs, and helps to improve the protection level of the third - rail power supply structure.

[0022] In summary, compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. Using the current collector of the external - wrapped third - rail power supply system of the present invention, the current collector shoe head and the sliding surface adopt planar contact, which can increase the contact area under normal operation conditions and maintain the current collection quality. The current collector cross arm is connected to the train through the first elastic member, so that there is a lateral degree of freedom between the current collector shoe head and the train, effectively improving the current collection stability. Cooperating with the second elastic member that provides the force to press the current collection slider against the contact rail, the contact force between the two sliding contact surfaces can always be constant under high - speed movement, ensuring stable current collection and better high - speed adaptability, and improving the power supply stability of the train.

[0024] 2. Adopting the external - wrapped third - rail of the present invention can increase the contact area between the current collector and the double - sided contact rail, has good current collection stability, can reduce space, is beneficial to reducing costs, and helps to improve the protection level of the third - rail power supply structure. Brief Description of the Drawings

[0025] Figure 1 Schematic structural diagram of a current collector for an outsourced third-rail power supply system in Embodiment 1;

[0026] Figure 2 Schematic structural diagram of the second elastic member in Embodiment 1;

[0027] Figure 3 Top view schematic diagram of the current collector head in Embodiment 1;

[0028] Figure 4 Schematic structural diagram of a current collector for an outsourced third-rail power supply system in Embodiment 2.

[0029] Markings in the figure: 11 - current collector cross arm, 12 - current collector vertical arm, 2 - train, 3 - first elastic member, 4 - current collection slider, 5 - contact rail, 6 - second elastic member, 61 - sleeve, 62 - spring, 63 - connecting shaft, 7 - support arm, 81 - protection slider, 82 - buffer, 9 - diagonal brace. Detailed implementation manners

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. Any technology implemented based on the content of the present invention belongs to the scope of the present invention.

[0031] Embodiment 1

[0032] As Figure 1 shown, a current collector for an outsourced third-rail power supply system according to the present invention includes a current collector cross arm 11 and a current collector vertical arm 12. The current collector cross arm 11 is connected to the train 2 through a first elastic member 3, such as being connected to the vehicle body or the bogie. The current collector vertical arm 12 is connected with a current collector head. The current collector head includes a second elastic member 6 and two oppositely arranged current collection sliders 4. The two current collection sliders 4 are respectively used for slidingly contacting both side surfaces of the contact rail 5. The current collection sliders 4 are hingedly connected to the current collector vertical arm 12. The second elastic member 6 is used to provide a force towards the contact rail 5 to the current collection sliders 4. The side surface of the contact rail 5 is a plane, and the contact surface of the current collection sliders 4 for connecting with the contact rail 5 is also a plane.

[0033] Specifically, the current collection slider 4 is hinged to the current collector vertical arm 12 through the support arm 7, and the second elastic member 6 is connected between the two support arms 7. In this embodiment, one of the support arms 7 is fixedly connected to the current collector vertical arm 12, and the other support arm 7 is hinged to the current collector vertical arm 12. The second elastic member 6 is connected between the two support arms 7. In the initial state, the second elastic member 6 can be in a stretched or natural state. The restoring force of the second elastic member 6 forms the extrusion or stable contact of the current collection shoe head against the contact rail sliding surface, so that the current collection shoe head and the contact rail sliding surface maintain stable sliding electrical contact drainage. The structure is simple, the cost is lower, the economy of the current collector is improved, and the adaptability during the high-speed operation of the train is further improved. As Figure 2 shown, the second elastic member 6 includes a sleeve 61, a spring 62 and a connecting shaft 63. The sleeve 61 and the connecting shaft 63 are respectively connected to the corresponding support arms 7. The sleeve 61 is sleeved outside the connecting shaft 63, the spring 62 is sleeved outside the sleeve 61, and the connecting shaft 63 can slide along the inner wall of the sleeve 61. The sleeve 61 and the connecting shaft 63 should be prevented from being completely separated. For example, the end of the sleeve 61 has a limiting baffle, and the limiting sliding is formed by the sleeve and the connecting shaft, which can ensure the reset direction of the spring after the two support arms 7 are relatively far apart, ensure the contact area between the current collection shoe head and the sliding surface, and further improve the current collection stability. At the same time, when passing through the turnout, the presence of the sleeve 61 can prevent the two current collection sliders 4 that are separated from the contact rail 5 from colliding with each other.

[0034] The current collection shoe head includes a shoe head fixture connecting the current collection slider 4, and a wiring terminal is installed on the shoe head fixture. The current collection slider 4 can be a carbon skateboard or a metal skateboard. Protection sliders 81 are provided on both the front and rear sides of the current collection slider 4, and a buffer member 82 is provided between the protection slider 81 and the shoe head fixture. As Figure 3 shown, the protection slider 81 can protect the current collection slider 4 when passing through the elbow at the end of the contact rail, and the buffer member 82 is used to effectively provide buffering. At the same time, the protection slider 81 can also remove the ice and rain on the surface of the contact rail in ice and rain weather, which is beneficial to the stable current collection of the train.

[0035] To further reduce wear and improve the economy of the current collector, the current collection slider 4 can be replaced by a plurality of current collection rollers, and all the current collection rollers are arranged coaxially in the longitudinal direction.

[0036] Using the current collector of an external-sheathed third-rail power supply system according to the present invention, the current collection shoe head and the sliding surface are in planar contact, which can increase the contact area under normal operation conditions and maintain the current collection quality. The cross arm of the current collector is connected to the train through a first elastic component, so that there is a lateral degree of freedom between the current collection shoe head and the train, effectively improving the current collection stability. Cooperating with the second elastic component 6 that presses the current collection slider 4 against the contact rail 5, the contact force between the two sliding contact surfaces can always be constant under high-speed movement, ensuring stable current collection, better high-speed adaptability, and improving the power supply stability of the train.

[0037] Embodiment 2

[0038] As Figure 4 shown, the structure of the current collector of an external-sheathed third-rail power supply system described in this embodiment is substantially the same as that of Embodiment 1. The difference is that the vertical arm 12 of the current collector can be connected to two vertically arranged support arms 7 through a cross bar.

[0039] The first elastic component 3 can be replaced by being connected between the cross arm 11 and the vertical arm 12 of the current collector, and there is also a diagonal brace 9 between the cross arm 11 of the current collector and the train 2.

[0040] Embodiment 3

[0041] As Figure 1 or 4 shown, an external-sheathed third rail described in this embodiment includes a contact rail 5 and a current collector of the external-sheathed third-rail power supply system described in Embodiment 1 or Embodiment 2.

[0042] The above are only the 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 principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An outsourced third rail, characterized in that, A current collector including a contact rail (5) and an over-wrap type third-rail power supply system, the current collector of the over-wrap type third-rail power supply system including a current collector cross arm (11) and a current collector vertical arm (12) connected to each other. The current collector cross arm (11) is connected to a train (2) through a first elastic member (3). The current collector vertical arm (12) is connected with a current collection shoe head, the current collection shoe head including a second elastic member (6) and two current collection sliders (4) arranged oppositely. The two current collection sliders (4) are respectively used for slidingly contacting both side surfaces of the contact rail (5). The current collection sliders (4) are hingedly connected to the current collector vertical arm (12). The second elastic member (6) is used for providing a force towards the contact rail (5) to the current collection sliders (4). The side surface of the contact rail (5) is a plane, and the contact surface of the current collection sliders (4) for connecting with the contact rail (5) is also a plane. The side surface of the contact rail (5) is arranged along the axial direction of the current collector vertical arm (12).

2. The third rail of the external wrapping type according to claim 1, wherein The current collection sliders (4) are hingedly connected to the current collector vertical arm (12) through support arms (7), and the second elastic member (6) is connected between the two support arms (7).

3. The third rail of an outsourcing type according to claim 2, characterized in that, In an initial state, the second elastic member (6) is in a stretched state.

4. The third rail of an outsourcing type according to claim 2, characterized in that, The second elastic member (6) includes a sleeve (61), a spring (62) and a connecting shaft (63). The sleeve (61) and the connecting shaft (63) are respectively connected to the corresponding support arms (7). The sleeve (61) is sleeved outside the connecting shaft (63), and the spring (62) is sleeved outside the sleeve (61). The connecting shaft (63) can slide along the inner wall of the sleeve (61). The length of the sleeve (61) is adapted to the width of the contact rail (5).

5. An externally wrapped third rail according to claim 1, characterized in that, The current collection shoe head further includes protection sliders (81), and the protection sliders (81) are arranged on the front and rear sides of the current collection sliders (4).

6. The third rail of an outsourcing type according to claim 5, characterized in that, The current collection shoe head further includes a shoe head clamp, and a buffer member (82) is arranged between the protection sliders (81) and the shoe head clamp.

7. An external-sheathed third rail according to any one of claims 1 to 6, characterized in that The first elastic member (3) is replaced and connected between the current collector cross arm (11) and the current collector vertical arm (12).

8. An external-sheathed third rail according to claim 7, characterized in that, There is also a diagonal brace (9) between the current collector cross arm (11) and the train (2).

9. An external-sheathed third rail according to any one of claims 1-6, characterized in that, The current collection sliders (4) are replaced with a plurality of current collection rollers, and all the current collection rollers are arranged coaxially in the longitudinal direction.

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