JP4014921B2 - Current collector for insulated trolley - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a current collector for an insulating trolley for receiving electric power and signals from an insulating trolley for supplying electric power and transmitting signals to a crane, a carriage, and the like.
[0002]
[Prior art]
FIG. 4 is a diagram showing a conventional collector for an insulating trolley, and FIG. 5 is a diagram showing a shoe case and a shoe. The shoe case 20 is made of plastic, and a groove that elastically grips the lower edge of the shoe 21 is provided in the longitudinal direction at the bottom. Then, by pushing the shoe 21 into the groove, the shoe 21 is fixed to the shoe case 20 as shown in FIG. In addition, a lead cable 22 is tightened with a screw 23 and electrically connected to the shoe 21.
[0003]
The shoe case 20 to which the shoe 21 is fixed in this way is pivotally supported by a support member 24, and the support member 24 is attached to a pair of arms 25, 25 constituting a parallel link. A coil spring 26 is suspended between the pair of arms 25, thereby pushing up the support member 24 upward.
[0004]
The shoe is a consumable item that wears during use and requires regular replacement. The work procedure at this time is as follows. First, the upper part of the shoe 21 is pinched with a tool such as a finger or a pliers, and as shown in FIG. Then, the screw 23 that fastens the end of the lead cable 22 to the shoe 21 is loosened and removed using a tool such as a screwdriver. Thereafter, the lead cable 22 is screwed to the new replacement shoe, and the shoe is inserted into the mounting groove of the shoe case 20 to complete the operation.
[0005]
As a conventional document relating to such a current collector for an insulating trolley, there is, for example, JP-A-5-95603.
[0006]
[Problems to be solved by the invention]
By the way, as shown in FIG. 6, the shoe case 20 and the shoe 21 travel along the insulating trolley while being pressed from below on the trolley conductor 30 of the insulating trolley having the opening of the insulating cover 31 in the lower longitudinal direction. To do. The insulation trolley requires three insulation trolleys for three phases, for example, and several signal insulation trolleys. These insulation trolleys are installed in parallel and save installation space. Therefore, the interval between the insulating trolleys is set to the minimum necessary.
[0007]
Therefore, as shown in FIG. 6, a large number of current collectors are arranged in parallel at a narrow interval, and when replacing the shoe, when removing the screw 23, a tool such as a screwdriver is placed next to the current collector. Will be plugged in from the side. Therefore, when exchanging the current collector shoe at the center, there is a problem that the current collector is obstructed and it is difficult to insert a tool and the working efficiency is very poor.
[0008]
The present invention has been made in view of such a problem, and it is an object of the present invention to facilitate shoe replacement even when a large number of current collectors are arranged in parallel at a narrow interval.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problem, the current collector for an insulating trolley according to claim 1 has a bolt with a flange at the lower end of the shoe, a flange abutting on the lower end surface of the shoe, and a tip of the bolt protruding downward. In this way, the cable is connected to the shoe from below by fastening the cable terminal to the bolt with a nut. In this way, even when a large number of current collectors are juxtaposed at narrow intervals, when replacing a shoe, it becomes possible to work from below the current collector, so that the adjacent current collector does not get in the way, and shoe replacement work Becomes easier.
[0010]
Further, the current collector for an insulating trolley according to claim 2 embeds a nut with a flange at the lower end of the shoe, the flange abuts the lower end surface of the shoe, and the screw hole of the nut opens downward. The cable is connected to the shoe from below by fastening the bolt terminal of the cable to the nut. Even in this case, even when a large number of current collectors are juxtaposed at narrow intervals, when replacing a shoe, it becomes possible to work from below the current collector, so that adjacent current collectors will not get in the way, and shoe replacement Work becomes easy.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a first embodiment of the present invention. The shoe 1 is made of a sintered alloy mainly composed of copper and carbon, and an embedded portion 4 of the bolt 2 is embedded in the lower end portion thereof. In order to embed the bolt 2 in the shoe 1, a sintering material is filled and sintered in a state where the embedding portion 4 is arranged at a predetermined position of the mold so that the tip of the bolt protrudes downward before sintering. .
[0012]
Since the shoe 1 made of sintered alloy has a relatively low mechanical strength and is damaged when a stress exceeding a specified value such as compression, tension, and bending is applied, the force applied to the bolt 2 is not directly applied to the shoe 1. The bolt 2 is provided with a flange 3 at a position in contact with the lower end surface of the shoe. The flange 3 has a size that protrudes to the side from the molding surface at the lower end of the shoe 1, and the stress applied to the bolt 2 is dispersed so that it does not concentrate in one place.
[0013]
FIG. 2 is a view showing a state in which the shoe of FIG. 1 is attached to the shoe case. The shoe 1 is attached by elastically holding it in the bottom groove of the shoe case 5. And the cable drawer | drawing-out part 6 is formed in the bottom part position of the shoe case 5 corresponding to the volt | bolt 2, and the front-end | tip of the volt | bolt 2 is exposed below. Then, the crimping terminal 9 of the cable 8 is passed through the bolt 2 from below and tightened with the nut 7 to perform electrical connection.
[0014]
When replacing the shoe 1, a tool is inserted from the lower side of the shoe case 5, the nut 7 is removed, the crimp terminal 9 of the cable 8 is removed from the bolt 2, and the old shoe 1 is pulled out upward. Then, after the new shoe 1 is fitted into the shoe case 5, the crimp terminal 9 of the cable 8 is passed through the bolt 2 from the lower side of the shoe case 5, and the nut 7 is tightened with a tool. In this way, the connection and removal of the cable 8 to and from the shoe 1 can be performed from the lower side of the current collector, and the shoe 1 can be easily replaced even when a large number of current collectors are arranged in parallel at a narrow interval. Can be.
[0015]
FIG. 3 is a diagram showing a second embodiment of the present invention. In this embodiment, a nut 10 is embedded in the shoe 1 and a bolt connected to a cable is screwed into the nut 10. In embedding the nut 10 in the shoe 1, a bulging portion 12 is provided in the shoe 1, and the nut 10 is embedded therein. Furthermore, the lower end of the nut 10 is provided with a flange 11 having the same function as the flange 3 of the first embodiment. Even in this case, as in the first embodiment, connection and removal of the cable 8 to and from the shoe 1 can be performed from below the current collector.
[0016]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
That is, the current collector for an insulating trolley according to claim 1 embeds a bolt with a flange at the lower end portion of the shoe, a flange abuts on the lower end surface of the shoe, and a tip of the bolt projects downward. By tightening the cable terminal to the bolt with a nut, the cable was connected to the shoe from below. As a result, even when a large number of current collectors are juxtaposed at narrow intervals, when replacing a shoe, it is possible to work from below the current collector, so that adjacent current collectors do not get in the way and shoe replacement is easy. become.
[0017]
Further, the current collector for an insulating trolley according to claim 2 embeds a nut with a flange at the lower end of the shoe, the flange abuts the lower end surface of the shoe, and the screw hole of the nut opens downward. The cable was connected to the shoe from below by tightening the bolt terminal of the cable to the nut. As a result, even when a large number of current collectors are juxtaposed at narrow intervals, when replacing a shoe, it is possible to work from below the current collector, so that adjacent current collectors do not get in the way and shoe replacement is easy. become.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention.
FIG. 2 is a view showing a state in which the shoe of FIG. 1 is attached to a shoe case.
FIG. 3 is a diagram showing a second embodiment of the present invention.
FIG. 4 is a view showing a conventional collector for an insulating trolley.
FIG. 5 is a view showing a shoe case and a shoe of FIG. 4;
FIG. 6 is a diagram showing a relationship between an insulating trolley and a current collector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Shoe 2 ... Bolt 3 ... Flange 4 ... Embedded part 5 ... Shoe case 6 ... Cable lead-out part 7 ... Nut 8 ... Cable 9 ... Crimp terminal 10 ... Nut 11 ... Flange 12 ... Swelling part 20 ... Shoe case 21 ... Shoe

Claims (2)

A bolt with a flange is attached to the lower end of the shoe, the flange is in contact with the lower end surface of the shoe, the tip of the bolt is embedded so that it protrudes downward, and the cable terminal is tightened with a nut to the shoe. A collector for an insulating trolley, characterized in that a cable is connected from below. A nut with a flange is attached to the lower end of the shoe, the flange is in contact with the lower end surface of the shoe, and the screw hole of the nut is opened downward. A collector for an insulating trolley characterized by connecting cables from below.

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