A new type of rolling three-rail current collector

Abstract

The present invention relates to the field of rail transit power transmission, and in particular to a novel rolling three-rail current collector, including a current collector seat, a current collector main shaft connected to the current collector seat, and a current collector roller rotating around the current collector main shaft. The present invention changes the friction form between the current collector and the three rails from sliding friction to rolling friction, so that the friction force is reduced when the two move, so that the current collector material can be selected from materials with stronger conductive ability, which will not only not cause loss in service life, but also enhance the conductive current-collecting ability. Moreover, according to different use requirements, upper contact current collector, lower contact current collector or side contact current collector can be selected.

Description

Technical Field

[0001] The invention relates to the field of rail transit power transmission, and in particular to a novel rolling three-rail current collector. Background Art

[0002] With the rapid development of the national economy, the population of major cities has continued to increase, causing increasing congestion in ground traffic. Rail transit, with its characteristics of fast, punctual, and large capacity, has been adopted by more and more cities to solve the problem of traffic congestion. The rail transit power supply methods are mainly divided into contact rail power supply system and contact network power supply system. The contact rail power supply system has the advantages of stable current collection quality, low construction cost, less later maintenance, and good landscape, and is widely adopted. The current collector is an indispensable device in the contact rail power supply system and is installed on the side of the subway train bogie and obtains electrical energy for the train from the contact rail system. According to the different installation methods of the current collector, the current collector can be divided into upper contact current collector, lower contact current collector and side contact current collector. At present, the traditional current collecting shoe power supply method in China is the current collection by sliding friction contact between the shoe arm plate and the surface of the three rails. This current collection method causes a large friction between the current collector and the three rails. Due to the difficulty in replacing the three rails, the current collector, as a consumable part, needs to be replaced frequently.

[0003] Therefore, it is necessary to develop a new type of rolling three-rail current collector, which can reduce the friction by using rolling friction without affecting the overall power supply, thereby reducing the current collector loss. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a novel rolling three-rail current collector to reduce the friction between the current collector and the three rails, thereby ensuring that the original power supply capacity remains unchanged or even improved.

[0005] The present invention is achieved through the following technical solutions:

[0006] A novel rolling three-track current collector includes a current collector seat, a current collector main shaft connected to the current collector seat, and a current collector roller rotating around the current collector main shaft, wherein:

[0007] The current collecting roller comprises a rotating sleeve, end covers arranged at both ends of the rotating sleeve and through which the main shaft of the current collecting device passes from the center, and a bearing-sleeve assembly arranged between the rotating sleeve and the main shaft of the current collecting device.

[0008] The end cover on one side is limited by an annular flange provided at one end of the current collecting roller, and the end cover on the other side is limited by a limiting ring fixed on the main shaft of the current collecting device;

[0009] The inner surface of the rotating sleeve is provided with inner concave platforms at both ends, and the end cover is clamped on the inner concave platforms and is in close contact with the inner concave platforms;

[0010] The end cover is provided with a through hole, and the end cover and the main shaft of the current collector are moved synchronously through the through hole;

[0011] The bearing-sleeve assembly comprises a sleeve sleeved on the main shaft of the current collector between the sleeves on both sides and a bearing arranged between the sleeve sleeve and the rotating sleeve.

[0012] The end cover is provided with a notch on the inner side of the position where the end cover contacts the flange of the current collector, and a compensation spring is arranged in the notch.

[0013] The end cover and the rotating sleeve are both made of copper.

[0014] The copper material used for the end cover has a lower hardness than the copper material used for the rotating sleeve.

[0015] The beneficial effects of the present invention are:

[0016] The present invention changes the friction form between the current collector and the three rails from sliding friction to rolling friction, so that the friction force is reduced when the two move, so that the current collector material can be selected from materials with stronger conductivity, which not only does not reduce the service life, but also enhances the conductive current-receiving capacity. In addition, according to different use requirements, upper contact current collection, lower contact current collection or side contact current collection can be selected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the upper contact current receiving operation of the present invention;

[0018] Figure 2 It is a cross-sectional view of the rolling current collecting shoe structure in the present invention;

[0019] Figure 3 This is a schematic diagram of the bottom contact current receiving operation of the present invention;

[0020] Figure 4 It is a schematic diagram of the side contact current collecting operation of the present invention.

[0021] In the figure: 1., current collector seat 2. current collector main shaft, 3. current collecting roller, 4. train bogie, 5. transmission contact rail, 6. rotating sleeve, 7., end cover 8. annular flange, 9. limiting ring, 10. inner concave platform, 11. shaft sleeve, 12. bearing, 13. spring mounting hole. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiments.

[0023] As shown in the figure, the present invention comprises a current collector seat 1, a current collector main shaft 2 connected to the current collector seat and a current collector roller 3 rotating around the current collector main shaft, wherein:

[0024] The current collector seat is installed on the train bogie 4, and the current collecting roller rotates around the main axis of the current collector and contacts with the transmission contact rail 5 to transmit the current to the train through contact current collection.

[0025] The current collecting roller comprises a rotating sleeve 6, end covers 7 arranged at both ends of the rotating sleeve and through which the main shaft of the current collecting device passes from the center, and a bearing-sleeve assembly arranged between the rotating sleeve and the main shaft of the current collecting device.

[0026] The end cover on one side is limited by an annular flange 8 provided at one end of the current collecting roller, and the end cover on the other side is limited by a limiting ring 9 fixed on the main shaft of the current collecting device; the annular flange and the limiting ring cooperate to limit the entire current collecting roller.

[0027] The inner surfaces of the rotating sleeve are provided with inner concave platforms 10 at both ends, and the end caps are clamped on the inner concave platforms and in close contact with the inner concave platforms;

[0028] The end cover is provided with a through hole, and the end cover and the main shaft of the current collector are moved synchronously through the through hole;

[0029] The bearing-sleeve assembly comprises a sleeve 11 which is sleeved on the main shaft of the current collector between the sleeves on both sides and a bearing 12 which is arranged between the sleeve and the rotating sleeve.

[0030] Preferably, the end cover is provided with a spring mounting hole 13 on the inner side of the flange contact position of the end cover with the current collector, and a compensation spring is arranged in the spring mounting hole.

[0031] The collector shaft, bushing and bearing in this example form a stable shaft system. When the train starts, the rotating sleeve rotates around the end cover, and the current will pass from the transmission contact rail through the rotating sleeve and the end cover in close contact with it, and finally provide electric power to the train through the collector roller shaft.

[0032] The rotating sleeve is rotated along the surface of the transmission contact rail to change the contact friction of the current collector shoe to rolling friction, which reduces the friction between the two and reduces the loss of the rotating sleeve. Therefore, materials with better conductivity can be selected to replace traditional collector shoe arm plate materials, providing better conductivity efficiency.

[0033] Preferably, the end cover and the rotating sleeve are both made of copper.

[0034] Furthermore, the physical properties of the materials used for the end cover and the rotating sleeve are slightly different. The hardness of the copper material used for the end cover is lower than that of the copper material used for the rotating sleeve, making the end cover a consumable part in the sliding friction between the two; and the end cover is easy to disassemble and replace.

[0035] The novel rolling three-track current collector has three working modes due to different usage modes, and the main axis of the current collector can be set to different forms according to the specific working mode.

[0036] like Figure 1It is an upper contact current collector, and the main shaft and current collector roller of the current collector are arranged above the transmission contact rail;

[0037] like Figure 3 It is a bottom contact current collector, and the main shaft and current collector roller of the current collector are arranged below the transmission contact rail;

[0038] like Figure 4 It is a side contact current collector. The middle part of the main axis of the current collector is bent, and its front end and current collecting roller are fixed on the side of the transmission contact rail.

[0039] The present invention changes the friction form between the current collector and the three rails from sliding friction to rolling friction, so that the friction force is reduced when the two move, so that the current collector material can be selected from materials with stronger conductivity, which not only does not reduce the service life, but also enhances the conductive current-receiving capacity. In addition, according to different use requirements, upper contact current collection, lower contact current collection or side contact current collection can be selected.

[0040] The above is only a preferred embodiment 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 present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rolling three-rail current collector, characterized in that: It includes a current collector seat, a current collector main shaft connected to the current collector seat, and a current collector roller rotating around the current collector main shaft, wherein: The current collecting roller comprises a rotating sleeve, end covers arranged at both ends of the rotating sleeve and through which the main shaft of the current collecting device passes from the center, and a bearing-sleeve assembly arranged between the rotating sleeve and the main shaft of the current collecting device. The end cover on one side is limited by an annular flange provided at one end of the current collecting roller, and the end cover on the other side is limited by a limiting ring fixed on the main shaft of the current collecting device; The inner surface of the rotating sleeve is provided with inner concave platforms at both ends, and the end cover is clamped on the inner concave platforms and is in close contact with the inner concave platforms; The end cover is provided with a through hole, and the end cover and the main shaft of the current collector are moved synchronously through the through hole; The bearing-sleeve assembly comprises a sleeve sleeved on the main shaft of the current collector between the sleeves on both sides and a bearing arranged between the sleeve sleeve and the rotating sleeve.

2. A rolling three-rail current collector according to claim 1, characterized in that: The end cover is provided with a spring installation hole on the inner side of the flange contact position of the end cover with the current collector, and a compensation spring is arranged in the spring installation hole.

3. A rolling three-rail current collector according to any one of claims 1 or 2, characterized in that: The end cover and the rotating sleeve are both made of copper.

4. A rolling three-rail current collector according to claim 3, characterized in that: The copper material used for the end cover has a lower hardness than the copper material used for the rotating sleeve.

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