JPS6354571B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a composite rigid trolley assembled with a conductive pedestal and a current collector contact member.

[Conventional technology]

In this type of composite rigid trolley, the conductive frame serves as the main body that provides bending rigidity to its components, and also functions as a bus bar for transmitting current, and the current collector contact member literally allows the current collector to run in contact with it. It also functions as a member that transmits the current from the conductive frame to the current collector.

For this reason, the conductive pedestal and the current collector contact member are not only mechanically coupled;
They must be coupled to have sufficient electrical continuity.

FIG. 1 shows a typical example of a conventional composite rigid trolley, in which a current collector contact member 2 made of a copper trolley wire is attached to a conductive pedestal 1 made of an aluminum section with a T-shaped cross section. Then, the claws 5a, 5a of the conductive ears 5, 5 made of aluminum, which are attached to the conductive frame 1 with bolts and nuts 3, 4, are held between the current collector contacting members 2, and the conductive ears 5, 5 are connected to the conductive frame 1. Mechanical and electrical connection with the electrical contact member is achieved.

Therefore, from the conductive frame 1 to the current collector contact member 2
The current path to the wire is carried out through conductive wires 5, 5, but if the wires 5 and frame 5 are made of aluminum, the oxide film formed on the surface has a very high electrical resistance. Since it is electrically insulating, it is necessary to thoroughly remove the oxide film before establishing electrical continuity between the two parts, which is a truly troublesome process. , are provided one after another at predetermined intervals in the longitudinal direction of the frame 1, making the work even more difficult.

In addition, as a method different from the above method, there is also a method in which a copper wire with a lead wire is used, which is attached to the frame with bolts and nuts, a copper trolley wire is held between the wires, and the lead wire is connected to the aluminum frame. It was hot.

Although this method can greatly reduce the polishing work described above, it requires special and expensive parts, making it difficult to adopt economically.

Not only that, but also in any of the above-mentioned means,
The bolts and nuts, which are the dominant element for clamping the ear to the frame, become loose due to vibrations caused by contact with the current collector, and it is difficult to maintain stable electrical contact between them, so they must be tightened regularly. Maintenance work has become extremely troublesome.

In view of the problems of the prior art as described above, the present invention provides a rigid trolley consisting of a conductive pedestal and a current collector contacting member that are manufactured separately. The object is to provide an entirely new construction method for composite rigid trolleys in which electrical and mechanical connections can be achieved without the use of third members such as bolts and nuts.

[Means to solve the problem]

As shown in FIGS. 2 to 4, the method of constructing the composite rigid trolley according to the present invention consists of conductive frames 10, 10' provided with bending rigidity, and a separately manufactured current collector contact member. 20, 20′ and
The convex portion 11 of the conductive pedestal is fitted into the concave portion 22a of the current collector contact member to constitute a composite rigid trolley body which is combined by mechanical connection ignoring electrical continuity, and the conductive pedestal is A conductive connecting member 30, 30' disposed astride between the abutted ends,
Each conductive pedestal is welded to form an electrical and mechanical connection between the pedestals, and the conductive connection member is welded to the current collector contact member to connect the conductive pedestal and the current collector. It is characterized by forming an electrical connection with a contact member.

In other words, the conductive frame is a fixed-length body due to its bending rigidity, and therefore, in an actual laying line, a series of fixed-length bodies are connected at their ends and successively installed. It is made into a long body, and at the joints of these conductive frames, conductive connecting members are disposed to straddle each other so as to be electrically conductive to each other, and a predetermined connection is made.

The present invention particularly focuses on having a connecting part between the conductive frames, and when connecting with the connecting member of the conductive frames, it also maintains a permanently stable electricity between the conductive frames and the current collector contact member. In addition, in the composite rigid trolley body,
The frame and the current collector contact member are combined by mechanical fitting, ignoring electrical continuity.

〔Example〕

Figures 2 and 3 show an embodiment of a composite rigid trolley obtained by the method of the present invention.

As shown in FIG. 2, the composite rigid trolley body includes a conductive profile 10 obtained by an extruded aluminum profile and a wear-resistant band made of a stainless steel tape that comes into direct contact with a current collector. The current collector contacting member 20 is obtained by attaching a small-sized aluminum conductive member for joining the frame to 21 and metallurgically bonding and integrating these members through a rolling mill.

On the other hand, the manufactured conductive pedestal 10 has a substantially inverted T-shaped cross section to obtain a predetermined bending rigidity, and has sharp protrusions 12 at both corners of the upwardly extending portion. A convex portion 11 is formed. In addition, the current collector contact member 20 manufactured on the other hand has a slightly thinner cross section in the direction in which the wear-resistant band material 21 and the conductive member 22 are overlapped, and has a roughly rectangular cross section.
A recess 22a is formed in the conductive member 22.
Unlike the conductive pedestal 10, such a current collector contact member 20 can be manufactured in a long length, but in this embodiment, it is assembled according to the length of the pedestal 10.

Thus, both members 10 and 20, which are manufactured separately and have the same length, fit the protrusion 11 on the pedestal 10 into the recess 22a of the conductive member 22, and define the recess 22a of the conductive member 22. By crimping the two leg-like portions formed by using a roll or the like so as to deform them inwardly, the machine can be operated with the protrusions 12, 12 at both corners of the convex portion 11 wedged into the corners of the concave portion 22a with a wedge effect. A combination is performed. Since the purpose of this connection is to combine the two members 10 and 20, electrical continuity is not taken into account.

Now, a large number of composite rigid trolley bodies combined in this way constitute a long track by connecting a large number of them, and the method of connecting adjacent rigid trolley bodies is shown in FIG. 3.

That is, the composite rigid trolley body T ₁ to be connected,
T ₂ is made so that the wear-resistant bands 21 and 21 of the current collector contact member are in a continuous state by butting their ends together, and a strip of aluminum plate or the like is placed between the butting ends. conductive connecting member 3
0 and 30 are arranged so as to straddle both sides and serve for connection. At that time, the conductive connection member 30 and each conductive frame 10 ₁ and 10 ₂ are welded and integrated, and the conductive connection The member 30 and the conductive members 22 ₁ and 22 ₂ of each current collector contact member are welded together. Reference numeral 40 indicates a weld overlay formed between the conductive connection member 30 and the conductive frames 10 ₁ and 10 ₂ , and 41 indicates the weld overlay formed between the conductive connection member 30 and the conductive frames 10 1 and 10 2 .
and conductive members 22 ₁ , 22 ₂ (and conductive frame 1
0 ₁ , 10 ₂ ).

Therefore, the adjacent conductive frames 10 ₁ and 10 ₂ are
An electrical and mechanical connection is formed by the weld overlay 40 and the conductive connecting member 30, and the conductive connecting member 30 and the conductive members 22 ₁ , 22 ₂
At the welded integral part formed by the weld overlay 41 between the conductive frames 10 ₁ , 10 ₂ and the current collector contact members 20 ₁ , 20 ₂ , that is, the conductive member 22
₁ and 22 form a permanently stable electrical connection between _{the two} .

With this configuration, the current flowing to the conductive frames 10 ₁ , 10 ₂ through the conductive connection member 30 passes through the weld overlay 41 that serves as an electrically conductive part to the current collector contact member 20 ₁ . , 20 ₂ and is supplied to the current collector through the wear-resistant bands 21 ₁ , 21 ₂ of the same member.

FIG. 4 shows another embodiment of the method according to the present invention, in which the current collector contacting member 20' is elongated. That is, the current collector contact member 20' is
The material is selected taking into consideration smooth contact and wear resistance against the sliding that occurs when the current collector runs in contact with the current collector, but since rigidity is provided by attaching it to the conductive frame, it is possible to reduce the size. The conductive frame 10' ₁ is made of a conductive frame having flexibility and manufactured as a long piece by coiling, which is separately manufactured as a fixed length body.
10' ₂ and delivered to the installation site.

First, a large number of conductive frames 10' ₁ , 1
0' ₂ ... were butted against each other to form a series of long pedestal paths, and the long current collector contact members 20' from which coils were removed were sequentially fed out and straightened by a straightening machine. Subsequently, the wires were sequentially extended onto the connected conductive frames 10' ₁ , 10' _{2 .} . . and combined vertically with the same capacity as in the previous example, thereby constructing a composite rigid trolley with no seam on the contact surface of the current collector. Furthermore, conductive connecting members 30', 30' are applied between the ends of the connected conductive frames 10' ₁ and 10' ₂ and are welded together to electrically and mechanically connect them. ,
The conductive connection member 30' and the current collector contact member 20' are welded together to form an electrical connection, and the entire operation is completed.

According to this embodiment, the electrical connection between the current collector contact member 20' and the conductive pedestals does not need to be made to all the conductive pedestals, but to the adjacent conductive pedestals at any connection point. In other words, the number of electrical connection points between the conductive frame and the current collector contact member can be reduced.

Note that, according to the present invention, various modifications may be made within the scope of the technical idea of the present invention without being limited to the two embodiments described above. For example, in addition to aluminum, a conductive metal material such as copper may be used for the conductive frame, the conductive member of the current collector contact member, and the conductive connection member. In addition, especially when used for direct current, iron-based metal materials can also be used for these members. Furthermore, instead of applying the conductive connecting member from both sides for connection, it is also possible to apply only one piece from one side for connection.

Furthermore, since the conductive pedestal serves as a power supply bus,
This requires connecting a power cable.
According to the present invention, it is possible to simultaneously weld and integrate such power supply cables and perform predetermined splicing when connecting the conductive pedestal.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the composite rigid trolley body is connected to the conductive pedestal by fitting the convex part of the conductive pedestal into the recessed part of the current collector contact member manufactured separately. The conductive connecting member and the current collector contact member are connected by welding, and the conductive mounts are connected by welding. Because they are integrally combined and electrical continuity is achieved between the conductive pedestal and the current collector contact member,
A series of electrical connection processes can be performed without the need for any fastening parts such as bolts and nuts that can become loose, and since the connection processes are performed scattered in the longitudinal direction, it contributes to a reduction in work man-hours, and therefore, It solves all the conventional problems and has great practical effects.

[Brief explanation of the drawing]

Figures 1A and 2B are a cross-sectional view and a side view showing an example of a conventional composite rigid trolley, and Figures 2A and 2B are a cross-sectional view and a side view showing the main body of a composite rigid trolley realized by the method of the present invention. Figure 3A is a side view showing an example of how the composite rigid trolley bodies are connected to each other; 1 is a side view showing another example of connection, and B in the same figure is a cross-sectional view taken along the line A-A in the above figure. In the figure, T ₁ and T ₂ are composite rigid trolley bodies, 10,
10 ₁ , 10' ₁ , 10 ₂ , 10' ₂ are conductive frames, 2
0, 20', 20 ₁ , 20 ₂ are current collector contact members, 3
0 and 30' are conductive connecting members, and 40 and 41 are weld overlays.

Claims (1)

[Claims] 1 A conductive pedestal with bending rigidity and a separately manufactured current collector contact member are connected by fitting the protrusion of the conductive pedestal into the recess of the current collector contact member to establish electrical continuity. A composite rigid trolley body is constructed by mechanically joining the trolley body, ignoring the An electrical and mechanical connection between the pedestals is formed, and the conductive connection member is integrally welded to the current collector contact member to form an electrical connection between the conductive pedestal and the current collector contact member. A method for constructing a composite rigid body trolley, characterized by forming a composite rigid body trolley.