JPS6125283Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a current collector for a mobile power supply line that can be advantageously installed in places with a poor installation atmosphere.

Conventionally, as is well known, two types of contact moving power supply line systems have been mainly used: a trolley bus duct with a trolley and an insulated trolley.

However, both have their own problems.

That is, while the above-mentioned trolleybus duct is relatively compact and has a good space factor, it also has a large number of bare conductors close to each other inside, and has openings along its entire length for the passage of the trolley. When the duct is filled with a hot and dusty atmosphere, there is a problem that short circuits can easily occur between the conductors due to the blood flow and the volume of dust. Since the cover is covered with an insulating cover that has an opening that is limited to provide conductor exposure, a large insulation distance can be secured even when multiple trolleys are placed close to each other. The electrical device requires a large amount of space because the current collector is attached to the tip of a long spring-loaded arm, and the current collector is forced into contact with the exposed conductor through a limited opening in the insulating cover. In addition, since the arm is directly attached to and interlocked with the moving equipment, it is easily affected by equipment vibration and diversion, and there are other causes of disconnection and derailment, and multiple insulated trolleys are installed independently. As a result, there were problems such as installation errors that affected the running of current collection.

As described above, trolley bus ducts and insulated trolleys have advantages and disadvantages, and in addition, both have common problems. In other words, trolley bus ducts and insulated trolleys are usually products with a fixed bottom length of about 3 m, and multiple pieces of these are connected electrically and mechanically to form a track, so when running in contact with current collectors, the trolley passes through several joints. Each time this happens, instantaneous disconnection and sparks occur due to the gaps and gaps in the joints. Such sparks can cause ignition in a dry, dusty atmosphere and are extremely dangerous.

As a solution to the above-mentioned drawbacks, a method can be considered in which a long insulating trolley is installed under tension in a plurality of connected ducts, and this allows a trolleybus duct with good space factor and a large insulation distance. The advantages of each insulated trolley can be utilized and the disadvantages of each can be compensated for.
The current collector contact also has the advantage that seams can be significantly reduced.

However, long insulated trolleys are installed on site with tension applied to each trolley, but this type of insulated trolley is rolled up and shipped to make it long, so it is absolutely impossible to prevent deformations such as snakes due to curling. It is very difficult to eliminate the deformation, and it is expensive and requires a lot of man-hours to correct the deformation so as to completely eliminate it.

In addition, the duct is installed by stringing together several pieces of standard length of about 3 m, and it is extremely difficult to install the duct in such a way as to maintain a constant level of contact with the insulating trolley.

Under such conditions, the current collector is guided by both the trolley that travels using the duct as a guide and the current collector that contacts the conductor current collection surface using the limited opening of the insulating cover of the long insulating trolley as a guide. However, since the duct and insulated trolley are fixed together with bolts, it is difficult to obtain a uniform guide in the traveling direction and it is difficult to ensure stable current collection.

In addition, due to deformation such as twisting in each of the plurality of insulated trolleys, deviations occur in the limited opening intervals in the insulating covers between the trolleys and in the conductor exposure intervals, and current collectors in some insulated trolleys There is a risk that contact elementary electricity may not be possible.

The purpose of the present invention is to solve the problems of the prior art described above, and to efficiently absorb errors even if the dimensions of the duct running path and the connection between the insulated trolleys and the distance between the lines of the insulated trolleys are not regular dimensions. The object of the present invention is to provide a device that can always perform stable current collection.

That is, in the current collector of the present invention, the trolley that runs in the duct and the part that collects current from the insulated trolley installed in the duct are separate parts, and the current collecting part is configured to correspond to each of the plurality of insulated trolleys. Each unit is movable independently, and elastic bodies are interposed between the units of the current collecting section and between the current collecting section and the truck.

Embodiments of the present invention will be explained below with reference to the accompanying drawings. In the figure, 1 indicates a duct, 10 indicates a long insulating trolley, and 20 indicates a current collector according to the present invention.

The duct 1 has duct units 2, 2, 2... butted against each other and is mechanically connected by connecting ducts 3, 3, 3... to form a continuous length, and each duct unit 2, 2, 2... is connected with a bracket. 4, 4, 4...
It will be connected to and erected. The duct unit 2 is a regular length product of about several meters, and has U-shaped cross-sectional frame bodies butted against each other, forming a mating part 2a at the top, connecting with bolts and nuts 5, and continuing longitudinally below the mating part 2a. It is formed by forming an opening 6.

When attached to the bracket 4, it is suspended and supported using a hanging bolt 7.

Such duct units 2, 2, 2... are connected in one continuous length so that the openings 6 face in the same direction, and then the bolts and nuts 8 are connected by connecting ducts 3, 3, 3... in a substantially U-shape between each connected part. They are integrated by being connected.

The long insulated trolley 10 is constructed by attaching a steel tape 12 vertically and curvedly around the periphery of a steel stranded wire 11 to form a long molded conductor 13 having a substantially U-shaped cross section. A long insulating cover 14 is continuously covered, and a conductor exposed portion 15 is continuously formed in the longitudinal direction inside a limited opening 14a formed on one side of the cover 14.

The conductor 13 and the insulating cover 14 are mounted on the drum 16 so that the side surfaces extending on both sides of the opening 14a overlap each other.
Alternatively, it can be wound into a coil and used for long length installation.

Such a long insulated trolley 10 has a duct 1
The wire is extended for a length that is approximately equal to the total length of the wire, passes through each duct unit 2, 2, 2, and passes through each duct connection part, and is attached to the anchor clamps 17, 17 at the duct unit at the wire end and the tail end. They are held together and tension is applied between them to make them stretch to a continuous length.

A plurality of insulated trolleys 10 are stretched in parallel in the duct 1, and conductor exposed portions 15 are passed through each restricted opening 14a.
is arranged facing in the same direction as the duct opening 6,
The duct units 2, 2, 2, . . . are intermediately supported by fitting an insulating cover 14 into grooved insulating holders 30, 30, 30, .

The anchor clamp 17 achieves the retention of the insulating trolley by fixing to the duct 1 an insulating holder 19 that holds both ends of the rigid pin 18 that passes through the insulating cover 14 and the conductor 13, and which is bolted into two parts. It is something.

However, when the conductor 13 has a steel stranded wire 11, a tightening insulator that applies tension to the steel stranded wire 11 is fixed to the duct, and the steel stranded wire 11 is covered with copper tape in a non-tensioned state and stretched. You can do it like this.

The current collector 20 consists of a cart 22 equipped with running wheels 21 on all sides, a holder 24 made of an insulating material with a built-in spring 23, and a current collector 25 attached and supported by the holder 24 so as to elastically protrude from the spring 23. The trolley 22 is housed in a duct and can be moved freely by the running wheels 21, while the large number of current collecting units 26 are individually connected to a plurality of insulated trolleys 10. The current collector 25 is installed opposite to the opening 14a of the insulating cover 14.
The conductor is brought into pressure contact with the conductor exposed portion 15 through the conductor.

A shaft 29 is attached to the trolley 22 along a direction perpendicular to its running direction, and the holders 24 of a large number of current collector units 26 are mounted on this shaft 29.
By inserting the
6 are supported so as to be able to move independently in the axial direction of the shaft 29.

Coiled springs 28 are interposed between adjacent holders 24 of each current collecting unit 26 and between the holder of the outer unit and the frame of the trolley 22, and each current collecting unit 2
6 are arranged in succession.

Therefore, a large number of current collecting units 26 are each moved separately by compressing or expanding the spring 28, and after being moved, they are returned to the original normal position by the elastic force of the spring 28, which is a so-called centering action.

The spring 28 can be attached by being inserted into the shaft 29.

A screen 27 fixedly protruding from the trolley 22 is provided between the holders 24 of adjacent current collecting units 26, and the screen 27 is inserted through the shaft 29 to divide the spring 28. This prevents the deformation of the spring 28 caused by the movement of each current collecting unit 26 from acting on the adjacent current collecting unit.

This is extremely effective in allowing each current collecting unit to move independently and absorb the displacement of a plurality of insulating trolleys 10 individually.

Guide wheels 30 that run along the sides of the duct 1 are provided on all sides of the truck 22, and a box 31 is vertically installed below the truck 22, into which a tow rod 32 that interlocks with the equipment is inserted. The box 31 moves and travels with the equipment, and a terminal board 33 is installed inside the box 31 to collect the lead wires connected to the collector.

The terminal board 33 is used to connect lead wires led out from a moving device (not shown).

50 is a space for the current collector 20 to transfer to another line. An insulating guide is provided at the end of the duct to guide the current collector 25 so that the exposed conductor portion 15 of the long insulated trolley is aligned with the current collector 25 when the current collector 20 transfers to another track.

FIG. 8 shows a modified example of the current collector of the present invention, in which a cushion material 28' is provided as an elastic body between each current collecting unit and between each unit and the truck.
It uses

As explained above, according to the current collector of the present invention,
If there is a discrepancy in the dimensions of the duct and the insulated trolley installed in the duct, or even if there is a discrepancy in the exposed conductor position between the insulated trolleys due to the deformation of the insulated trolley itself, each insulated trolley The corresponding current collecting unit can be moved and adjusted individually to absorb the error, and after the error is eliminated, the elastic bodies interposed between the current collecting units and between the unit and the cart It is quickly centered due to the repulsion of the trolley, so there is no fear that current collection will be impossible in some parts of the multiple insulating trolleys, and the installation error can be self-adjusted as needed to ensure smooth and stable current collection running. be able to.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a mobile power supply line, Fig. 2 is a perspective view showing a duct unit on the line, Fig. 3 is a perspective view showing a long insulated trolley on the line, and Fig. 4 is a side view showing the connecting part of the line duct. 5 shows a sectional view taken along the line A--A in FIG. 4. FIG. 6 shows a transfer portion of the track, and A is a plan view, and B is a side view with a partial cross section. FIG. 7 shows an embodiment of the current collector of the present invention, A is a plan view, B is a side view with a partial cross section, C is a sectional view, and FIG. 8 is a modified example of the current collector of the present invention. FIG. 1: Duct, 10: Insulated trolley, 20: Current collector, 22: Trolley, 26: Current collector unit, 28:
Spring, 28': cushion material.

Claims (1)

[Scope of utility model registration request] A device that collects current from a power supply line configured by laying multiple insulated trolleys in parallel in a duct,
Each insulating trolley is individually provided with a current collecting unit consisting of a current collector that contacts the exposed conductor through a limited opening of the insulating cover of the insulating trolley and a holder that elastically supports the current collector,
These current collector units are mounted on a trolley that is towed by a moving device and runs in a duct so that they can each move independently in a direction perpendicular to the running direction of the trolley, and each holder that is adjacent to the other in the moving direction A current collector characterized in that the current collector is configured to communicate with each other by interposing an elastic body between the holder and the trolley.