Composite material trolley pole

Abstract

The utility model discloses a composite material trolley pole, which adopts a composite material layer to provide most structural strength so as to reduce the requirement on the structural strength of a tubular bus in the trolley pole, so that the wall thickness of the tubular bus is reduced, the capability of the tubular bus for bearing current can be fully exerted, and the capability waste is avoided. And meanwhile, the composite material layer provides enough structural strength, so that the wall thickness of the tubular bus is reduced, the use amount of materials is reduced, and the weight of the whole trolley pole is reduced.

Description

Technical Field

[0001] This solution relates to the field of trolleybuses, specifically to a composite material current collector pole. Background Technology

[0002] The current collector poles used on trolleybuses support current collector heads at their ends. During operation, these current collector heads need to be raised to contact the contact wire for electrical connection. These poles are typically 5 meters long. The current collector poles need sufficient strength to support the current collector heads while minimizing weight to reduce the load on the drive mechanism. They also need to be conductive. Existing current collector poles primarily use aluminum alloy as the base material, with an external insulation layer. Some types of insulation (such as fiberglass) provide reinforcement. To achieve sufficient structural strength, the aluminum alloy base material needs to be about 5mm thick in some areas. However, the actual current it withstands during operation is only about 1.5% of its safe current carrying capacity, resulting in very low current density over long periods. Existing current collector poles, with aluminum profiles already at a wall thickness of 3-5mm to achieve sufficient structural strength, make further weight reduction difficult. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a current collector rod made of composite material, which reduces the amount of aluminum profile used and further reduces weight.

[0004] The specific technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A composite material current collector pole includes a tubular busbar for conducting electricity, characterized in that it further includes a composite material layer disposed outside the tubular busbar; compared with existing current collector poles, the composite material layer in this solution is thicker and is used to provide the main structural strength, while the tubular busbar is thinner and only provides a small part of the structural strength, and the current density it carries during normal operation can be greater than 1A / mm2.

[0006] Compared to existing technologies, this solution offers the following advantages: By incorporating a composite material layer that bears the primary structural strength, the composite material layer is lighter than the tubular busbar material while providing the same structural strength. This reduces the structural strength required of the tubular busbar, allowing for a significant reduction in its wall thickness. This enables more efficient utilization of its current-carrying capacity, substantially reduces the amount of metal (aluminum alloy profiles) used, further decreases the weight of the current collector rod, reduces the inertia of the moving parts of the current collector, and improves overall performance.

[0007] Furthermore, the composite material layer consists of several layers of carbon fiber prepreg. Carbon fiber material is lightweight and structurally strong; the current collector rod obtained by wrapping and processing with carbon fiber prepreg is lightweight and structurally strong, fully meeting the needs of the field.

[0008] Furthermore, the wall thickness of the tubular busbar is less than 2mm. The tubular busbar only needs to provide the core, skeleton, and conductive function and performance of the composite material layer, so the wall thickness can be greatly reduced, the amount of metal used can be reduced, and the overall weight of the product can be reduced.

[0009] Furthermore, the tubular busbar is made of aluminum alloy, which is lightweight and structurally strong.

[0010] Furthermore, the composite material layer is located outside the tubular busbar, and the inner surface of the tubular busbar is provided with reinforcing ribs. The reinforcing ribs further enhance the structural strength of the tubular busbar. Furthermore, the tubular busbar includes an outer circle and an inner circle, and the reinforcing ribs connect the outer circle and the inner circle.

[0011] The inner circle and its connection with the reinforcing ribs further enhance the structural strength of the tubular busbar. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a collector pole;

[0013] Figure 2 This is a schematic diagram of the cross-section of a current collector pole in the prior art;

[0014] Figure 3 This is a schematic diagram of the cross-section of the current collector pole in Example 1;

[0015] Figure 4 This is a schematic diagram of the cross-section of the current collector pole in Example 2;

[0016] Figure 5 This is a schematic diagram of the cross-section of the current collector pole in Example 3;

[0017] Figure 6 This is a schematic diagram of the cross-section of the current collector pole in Example 4.

[0018] The following is a list of component names represented by the reference numerals in the attached diagram:

[0019] 1. Current collector head; 2. Current collector pole; 3. Vehicle roof; 4. Tubular busbar; 5. Composite material layer; 6. Reinforcing rib; 7. Inner circle; 8. Insulation layer. Detailed Implementation

[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0021] like Figure 1As shown, this is a schematic diagram of the current collector pole 2 in use. It is installed on the top of the vehicle 3, with a current collector head 1 fixed at the end. It is generally about 5 meters long and about 70 mm in diameter. In order to have sufficient structural strength, it is generally made of a tubular busbar 4 with a wall thickness of more than 3 mm, wrapped with an insulation layer 8. In the current design, the tubular busbar 4 provides all the structural strength and conductivity, and the wall thickness of more than 3 mm is mainly chosen to meet the structural strength requirements. In actual tests, when a certain model of vehicle is running normally, the voltage is between 800V and 900V, and the current is mostly between 90 and 150 amps. The conductive cross-section of the tubular busbar 4 is about 650 square millimeters. According to the calculation that the safe current carrying capacity of aluminum conductor is 3 amps per square millimeter, the actual current it carries during normal operation (taking the larger value) is only 0.077% of the current that the tubular busbar 4 can safely carry, and the current density is 0.23A / mm2. It is very wasteful in terms of current carrying capacity, and the structural strength requirements make it impossible to further reduce the wall thickness to reduce weight.

[0022] Example 1:

[0023] like Figure 3 As shown, a composite material current collector pole includes a tubular busbar 4 for conducting electricity and providing a small portion of structural strength. A composite material layer 5 is provided on the outside of the tubular busbar. The composite material layer 5 is insulating and provides the main structural strength of the entire current collector pole. Therefore, the composite material layer 5 simultaneously provides structural strength and insulation, thereby significantly reducing the structural strength requirements of the tubular busbar 4. The tubular busbar 4 is made of aluminum alloy profile with a wall thickness of 1.2-2 mm, far lower than the wall thickness of the tubular busbar 4 in existing current collector poles. The composite material layer 5 is made of carbon fiber, obtained by winding several layers of carbon fiber prepreg onto the tubular busbar. Because the density of the composite material layer 5 is lower than that of aluminum alloy, and its thickness does not need to reach the wall thickness of the original aluminum alloy profile (aluminum has a density of 2.71 g / cm³), the composite material layer 5 is suitable for applications where the density of aluminum is lower than that of aluminum alloy. 3 The density of carbon fiber composite materials is 1.6-2.0 g / cm³. 3 The density of the glass fiber composite material is 1.8-2.2 g / cm³. 3 Therefore, the overall weight of the current collector pole can be further reduced. Due to factors such as cost, ease of repair, and readily available raw materials, the composite material layer 5 can also be made of fiberglass.

[0024] Example 2:

[0025] like Figure 4 As shown, unlike Example 1, in this example, the inner surface of the tubular busbar 4 is provided with reinforcing ribs 6, which can further improve the overall structural strength.

[0026] Example 3:

[0027] like Figure 5As shown, unlike Embodiment 2, the tubular busbar 4 in this example also includes an inner circle 7, and a reinforcing rib 6 connects the inner circle 7 with the outer circle of the tubular busbar 4. This structure can further enhance the structural strength.

[0028] Example 4:

[0029] like Figure 6 As shown, unlike Example 1, in this example, the reinforcing ribs 6 inside the tubular busbar 4 extend inward and converge at a point.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A composite material pole for collecting electricity comprising a pipe-shaped busbar for conducting electricity, characterized by, Also included is a composite layer disposed outside the tubular busbar, the composite layer being configured to provide structural strength; the tubular busbar having a wall thickness of less than 2mm.

2. The composite material pole according to claim 1, characterized in that, The composite layer is composed of several layers of carbon fiber prepreg.

3. The composite material pole according to claim 1 or 2, characterized by, The tubular busbar is made of aluminum alloy material.

4. The composite material pole according to claim 1 or 2, characterized by, The inner surface of the tubular busbar is provided with a reinforcing rib.

5. The composite material pole according to claim 4, wherein The tubular busbar includes an outer circle and an inner circle, and the reinforcing rib connects the outer circle and the inner circle.

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