JP2006033935A - Collector of insulative trolley - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collector of an insulative trolley for suppressing an abrasion of an insulation cover of the insulative trolley and an increase in an electrical resistance of a sliding connection, surely supplying power and transmitting a signal to a movable load, stabilizing a running shoe, and preventing a derailment. <P>SOLUTION: The collector is provided with the running shoe 28 for slidably contacting a conductor 22 of the insulative trolley 20, a shoe holder 30 for holding the shoe, and a shoe holder supporting/pressing means 32 for supporting the shoe holder and pressing the shoe 28 to the conductor 22. A sliding rod 34 is fixed and supported so as to be inserted into an opening 26 of the insulation cover 24 on the front and back in the longitudinal direction of the shoe 28 in the shoe holder 30. A width of the sliding rod 34 inserted into the opening 26 of the insulation cover 24 is larger than a width of the shoe 28 inserted into the opening 26. A friction coefficient of the sliding rod 34 is lower than a friction coefficient of the opening 26. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a current collector for an insulated trolley that supplies electric power to a moving load such as a crane, a hoist, a transport carriage, or transmits a signal.

  2. Description of the Related Art Conventionally, a current collector for an insulated trolley used for supplying electric power to a moving load such as a crane, a hoist, a transport carriage, or transmitting a signal is configured as shown in FIGS. Yes. That is, the insulation having a conductor 2 made of copper (including a copper alloy; the same shall apply hereinafter) formed in a flat plate shape and an insulating cover 3 made of hard polyvinyl chloride covering the conductor 2 along the longitudinal direction thereof. A copper shoe (collector) 5 that is inserted into the opening 4 of the insulating cover 3 and can run in the longitudinal direction of the conductor 2 while being in sliding contact with the conductor 2, and a shoe that holds the shoe 5. A holder 6 and a shoe holder support pressing means 7 that supports the shoe holder 6 and presses the shoe 5 against the conductor 2 of the insulating trolley 1 through the holder 6 are provided. When the shoe 5 reciprocates in the longitudinal direction of the conductor 2 while being pressed against the conductor 2, an electric cable (including an optical composite cable including the optical composite cable) attached to the shoe holder 6 from the conductor 2. (Same) (not shown) to supply power to the power source of the mobile load or transmit a signal.

  The shoe holder support pressing means 7 is disposed at a predetermined interval from the first support member 8 that rotatably supports the shoe holder 6 by the shaft 9, and is supported by a bracket 11 on a moving load (not shown). The two support members 10 are arranged in parallel between the first support member 8 and the second support member 10, and both ends thereof are supported by shafts 14 and 15 so as to form parallel links to the members 8 and 10. A pair of first and second current collecting arms 12 and 13 that are rotatably supported and connected to each other, and are suspended in an oblique direction between the current collecting arms 12 and 13, and by a spring tension action, the first support member 8. And a spring member 16 made of a tension coil spring that presses the shoe 5 against the conductor 2 of the insulating trolley 1 via the shoe holder 6 (see Patent Document 1).

  The insulating trolley 1 has a conductor 2 formed in a U-shaped cross section as shown in FIG. 9 (a), or in a cross-sectional shape as shown in FIGS. 9 (b) and 9 (c). In some cases, the opening 4 of the insulating cover 3 is formed on the side as shown in FIG. 9C instead of the lower side as shown in FIGS. . The insulating cover 3 also serves as a guide for the shoe 5 to travel, in addition to electrical insulation of the conductor 2.

JP-A-5-95603 (paragraph numbers 0006 to 0007 in the detailed description of the invention, FIGS. 1 and 2)

  In the conventional current collector of the insulation trolley 1, the shoe 5 meanders when the shoe 5 reciprocates in the longitudinal direction of the conductor 2 in the opening 4 of the insulation cover 3 while being pressed against the conductor 2 of the insulation trolley 1. Thus, the vehicle travels with the insulating cover 3 as a guide while contacting the opening 4 portion of the insulating cover 3 (including the portion in the opening 4; the same applies hereinafter). Therefore, the opening 4 portion of the insulating cover 3 is worn out, and wear powder, shavings, dust, etc. (hereinafter referred to as wear powder) may be generated and may be caught in the sliding contact portion between the conductor 2 and the shoe 5. When the wear powder is caught, the electrical resistance of the sliding contact portion increases, an overheating accident occurs in a power system that supplies power, and a transmission failure is likely to occur in a control system that performs signal transmission. . Further, since the insulating cover 3 also serves as a guide for the shoe 5, the wearing of the insulating cover 3 makes the shoe 5 unstable, and the opening 4 widens, which may cause a derailment accident. is there. Furthermore, it is conceivable to continuously guard the opening 4 portion of the insulating cover along the longitudinal direction with a metal or other wear-resistant material, but since the insulating trolley 1 is a long body, it is newly manufactured. Or has to be modified, which is expensive.

  The present invention solves the above problems, suppresses the wear of the insulating cover of the insulating trolley and the increase in the electrical resistance of the sliding contact portion, reliably supplies power to the moving load and transmits signals, and stabilizes the running of the shoe. An object of the present invention is to provide a current collector for an insulated trolley that can prevent a derailment accident.

  To achieve the above object, an invention according to claim 1 of the present invention is an insulating trolley having a conductor and an insulating cover covering the opening so that the opening exists, and is inserted into the opening of the insulating cover. In a current collector for an insulated trolley comprising a shoe that can run while slidingly contacting a conductor, a shoe holder that holds the shoe, and a shoe holder support pressing means that supports the shoe holder and presses the shoe against the conductor of the insulated trolley. A sliding rod is fixedly supported so as to be inserted into the opening of the insulating cover at the front and rear position in the longitudinal direction of the shoe in the shoe holder, and is inserted into the opening of the insulating cover (inserted into the opening). In addition to the portion, the opening portion is included. The same applies hereinafter.) The width of the sliding rod is larger than the width of the shoe inserted into the opening of the insulating cover. Coefficient of friction is characterized in being formed to be smaller than the friction coefficient of the opening portion of the insulating cover.

  The invention described in claim 2 of the present invention is an insulating trolley having a conductor and an insulating cover that covers the conductor so that the opening exists, and is inserted into the opening of the insulating cover and can run while sliding on the conductor. In a current collector for an insulating trolley comprising a shoe, a shoe holder for holding the shoe, and a shoe holder support pressing unit that supports the shoe holder and presses the shoe against a conductor of the insulating trolley, the longitudinal direction of the shoe in the shoe holder The rotating rod is rotatably supported so as to be inserted into the opening of the insulating cover at the front-rear position, and the outer diameter of the rotating rod inserted into the opening of the insulating cover is inserted into the opening of the insulating cover. The shoe is formed larger than the width of the shoe.

  The invention described in claim 3 of the present invention is an insulating trolley having a conductor and an insulating cover that covers the conductor so that the opening exists, and is inserted into the opening of the insulating cover and can run while sliding on the conductor. In a current collector for an insulating trolley comprising a shoe, a shoe holder for holding the shoe, and a shoe holder support pressing unit that supports the shoe holder and presses the shoe against a conductor of the insulating trolley, the longitudinal direction of the shoe in the shoe holder The conductive sliding rod is fixed and supported so as to be inserted into the opening of the insulating cover at the front-rear position, and the width of the conductive sliding rod inserted into the opening of the insulating cover is within the opening of the insulating cover. The width of the inserted shoe is greater than that of the inserted shoe, and the hardness of the conductive sliding rod is less than the hardness of the opening of the insulating cover. The one in which the features.

  According to the current collector for an insulating trolley according to claim 1 of the present invention, the width of the sliding rod is formed larger than the width of the shoe, so that the inside of the opening of the insulating cover is passed through the opening of the insulating cover while the shoe is pressed against the conductor. When traveling in the longitudinal direction, it does not directly contact the opening of the insulating cover. Accordingly, the opening portion of the insulating cover is not worn by contact with the shoe and no wear powder is generated. Further, since the friction coefficient of the sliding rod is formed to be smaller than the friction coefficient of the opening portion of the insulating cover, even if the sliding rod comes into contact with the opening portion of the insulating cover as the shoe travels, the sliding rod slips. The degree increases. Therefore, it is suppressed that the opening part of an insulating cover is worn out and wear powder is generated. As a result, the amount of abrasion powder caught in the sliding contact portion between the conductor and the shoe is reduced, the increase in the electrical resistance of the sliding contact portion is suppressed, and the occurrence of an overheating accident or signal transmission in the power system that supplies power. It is possible to prevent the occurrence of transmission problems in the control system to be performed. In addition, since the wear of the insulating cover is suppressed, the running of the shoe is stabilized and the spread of the opening is suppressed, so that it is possible to reliably prevent the shoe from causing a derailment accident. Furthermore, since it is not necessary to guard the opening of the insulating trolley with an abrasion-resistant material, it is not necessary to newly manufacture or modify the insulating trolley, which is economical.

  According to the current collector for an insulated trolley according to claim 2 of the present invention, since the outer diameter of the rotating rod is formed larger than the width of the shoe, the conductor is passed through the opening of the insulating cover while the shoe is pressed against the conductor. When traveling in the longitudinal direction, the opening of the insulating cover does not come into direct contact. Accordingly, the opening portion of the insulating cover is not worn by contact with the shoe and no wear powder is generated. Further, since the rotating rod is rotatably supported by the shoe holder, it rotates while rolling when the rotating rod comes into contact with the opening portion of the insulating cover as the shoe travels. Therefore, it is suppressed that the opening part of an insulating cover is worn out and wear powder is generated. As a result, the amount of abrasion powder caught in the sliding contact portion between the conductor and the shoe is reduced, the increase in the electrical resistance of the sliding contact portion is suppressed, and the occurrence of an overheating accident or signal transmission in the power system that supplies power. It is possible to prevent the occurrence of transmission problems in the control system to be performed. In addition, since the wear of the insulating cover is suppressed, the running of the shoe is stabilized and the spread of the opening is suppressed, so that it is possible to reliably prevent the shoe from causing a derailment accident. Furthermore, since it is not necessary to guard the opening of the insulating trolley with an abrasion-resistant material, it is not necessary to newly manufacture or modify the insulating trolley, which is economical.

  According to the current collector for an insulating trolley according to claim 3 of the present invention, the width of the conductive sliding rod is formed larger than the width of the shoe, so that the shoe is pressed against the conductor while passing through the opening of the insulating cover. When traveling in the longitudinal direction of the conductor, it does not directly contact the opening of the insulating cover. Accordingly, the opening portion of the insulating cover is not worn by contact with the shoe and no wear powder is generated. In addition, since the conductive sliding rod is formed of a conductive material whose hardness is smaller than the hardness of the opening portion of the insulating cover, the conductive sliding rod becomes open in the insulating cover as the shoe travels. When contacted, the conductive sliding rod wears and generates conductive wear powder. As a result, even if abrasion powder gets caught in the sliding contact part between the conductor and the shoe, an increase in the electrical resistance of the sliding contact part is suppressed, and an overheat accident or signal transmission is controlled in the power system that supplies power. It is possible to prevent transmission troubles in the system. In addition, since the wear of the insulating cover is suppressed, the running of the shoe is stabilized and the spread of the opening is suppressed, so that it is possible to reliably prevent the shoe from causing a derailment accident. Furthermore, since it is not necessary to guard the opening of the insulating trolley with an abrasion-resistant material, it is not necessary to newly manufacture or modify the insulating trolley, which is economical.

  Next, the configuration of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a first embodiment of a current collector for an insulated trolley according to the present invention, in which (a) is a partially sectional front view, (b) is a left side view of (a), and FIG. FIG. 3 is a plan view of FIG. 2 and FIG. 4 is a left side view of FIG.

  In the current collector of the present embodiment, as shown in the figure, a copper conductor 22 formed in a U-shaped cross section and opened downward, and an opening 26 below the copper conductor 22 along the longitudinal direction thereof. An insulating trolley 20 having an insulating cover 24 made of hard polyvinyl chloride covering the copper shoe 28 inserted into the opening 26 of the insulating cover 24 and capable of running in the longitudinal direction of the conductor 22 while sliding on the conductor 22. And a shoe holder 30 that holds the shoe 28, and a shoe holder support pressing means 32 that supports the shoe holder 30 and presses the shoe 28 against the conductor 22 of the insulating trolley 20 through the holder 30. In addition, a slide rod 34 that suppresses wear of the insulating cover 24 is inserted into the opening 26 of the insulating cover 24 adjacent to the shoe 28 of the shoe holder 30 and at a front-rear position on the longitudinal axis thereof. And fixed vertically by screwing or the like and supported vertically. When the shoe 28 reciprocates in the longitudinal direction of the conductor 22 while being pressed against the conductor 22, the power source of the moving load is supplied from the conductor 22 via the electric cable 36 attached to the shoe holder 30. To supply power or transmit signals.

  As shown in FIG. 1A, the shoe holder support pressing means 32 is disposed at a predetermined interval from a first support member 38 that supports the shoe holder 30 so as to be rotatable by a shaft 40. (Not shown) is disposed in parallel between the second support member 42 supported by the rod-shaped bracket 44 and the first support member 38 and the second support member 42, and parallel links are provided to these members 38 and 42. A pair of first and second current collecting arms 46 and 48 that are rotatably supported by shafts 50 and 52 so as to be connected to each other, and the current collecting arms 46 and 48 are suspended in an oblique direction. And a spring member 54 formed of a tension coil spring that presses the shoe 28 against the conductor 22 of the insulating trolley 20 through the first support member 38 and the shoe holder 30 by a spring tension action.

  As shown in FIGS. 2 and 3, the slide rod 34 is formed of, for example, a rod-like body having a circular cross section, and the width W1 of the slide rod 34 inserted into the opening 26 of the insulating cover 24 is within the opening 26 of the insulating cover 24. The friction coefficient of the outer surface of the slide rod 34 inserted into the opening 26 of the insulating cover 24 is larger than the width W2 of the shoe 28 inserted into the insulating cover 24, and the friction coefficient of the opening 26 portion (inner side surface) of the insulating cover 24. It is formed so as to be smaller. In the present embodiment, the entire sliding rod 34 is formed into a single layer by molding a tetrafluoroethylene resin, and the friction coefficient of the portion inserted into the opening 26 is approximately 0.1. On the other hand, the friction coefficient of the opening 26 portion of the insulating cover 24 made entirely of polyvinyl chloride is approximately 0.45. Therefore, the friction coefficient of the portion of the sliding rod 34 is that of the opening 26 portion (inner side surface) of the insulating cover 24. It becomes smaller than the friction coefficient. When the insulating cover 24 is made of polyvinyl chloride, the sliding rod 34 is made of polyacetal (friction coefficient is approximately 0.14), high density polyethylene (friction coefficient is approximately 0.18), low in addition to the tetrafluoroethylene resin. It can be formed of density polyethylene (friction coefficient approximately 0.27), polyamide (nylon 66) (friction coefficient approximately 0.37), or the like. The sliding rod 34 is formed in a plurality of inner and outer layers instead of a single layer, and the outermost layer is formed by the tetrafluoroethylene resin or the like, or is formed by coating, applying or impregnating molybdenum disulfide or a lubricant. For example, the friction coefficient of the outer surface may be made smaller than the friction coefficient of the opening 26 portion (inner surface) of the insulating cover 24. Further, the slide rod 34 may be formed in a non-circular shape such as an elliptical cross section, a quadrilateral, a polygon such as a hexagon, or the like. Further, the hardness of the outer surface of the sliding rod 34 may be larger than the hardness of the opening 26 portion of the insulating cover 24. As a result, the sliding degree of the sliding rod 34 with respect to the opening 26 portion of the insulating cover 24 is further improved, and the wear of the insulating cover 24 can be further reduced.

  According to the current collector of the first embodiment, the width W1 of the sliding rod 34 is formed larger than the width W2 of the shoe 28, so that the shoe 28 is pressed against the conductor 22 while passing through the opening 26 of the insulating cover 24. When traveling in the longitudinal direction of the conductor 22, it does not directly contact the opening 26 portion of the insulating cover 24. Therefore, the opening 26 portion of the insulating cover 24 is not worn by contact with the shoe 28 and wear powder is not generated. Further, since the friction coefficient of the sliding rod 34 is formed to be smaller than the friction coefficient of the opening 26 portion of the insulating cover 24, the sliding rod 34 moves to the opening 26 of the insulating cover 24 as the shoe 28 travels. Even if it touches the part, the degree of slip increases. Therefore, it is possible to suppress the opening 26 portion of the insulating cover 24 from being worn and generating wear powder. As a result, the amount of abrasion powder caught in the sliding contact portion between the conductor 22 and the shoe 28 is reduced, the increase in the electrical resistance of the sliding contact portion is suppressed, and the occurrence of an overheating accident or signal in the power system that supplies power It is possible to prevent a transmission failure from occurring in a control system that performs transmission. In addition, since the wear of the insulating cover 24 is suppressed, the running of the shoe 28 is stabilized, and the opening 26 is suppressed from spreading, so that it is possible to reliably prevent the shoe 28 from causing a derailment accident. Furthermore, since it is not necessary to guard the opening 26 portion of the insulating trolley 20 with an abrasion resistant material, the insulating trolley 20 does not need to be newly manufactured or modified, which is economical.

  FIG. 5 is an enlarged cross-sectional view of the rotating rod 56 that is the main part of the second embodiment of the current collector according to the present invention. In the current collector of the present embodiment, in the current collector of the first embodiment, a rotating rod 56 that suppresses wear of the insulating cover 24 is used instead of the sliding rod 34. The rotating rod 56 is adjacent to the shoe 28 of the shoe holder 30 and is fixed to a fixed shaft 58 erected by screwing or the like at a front-rear position on the longitudinal axis thereof, such as a ball, a roller bearing, a gun metal member, or the like. It is rotatably and vertically supported so as to be inserted into the opening 26 of the insulating cover 24 via a bearing 60 such as a flat (sliding) bearing made of a bearing material. The friction coefficient of the bearing 60 is set to be smaller than the friction coefficient of the outer peripheral surface of the rotating rod 56 and the opening 26 portion (inner surface) of the insulating cover 24, and the rotating rod 56 travels while contacting the opening 26 portion of the insulating cover 24. When it does, it does not slip with respect to the insulating cover 24, and rotates while rolling. The rotating rod 56 is made of a rubber, plastic, or metal cylinder whose head is closed, and the outer diameter of the rotating rod 56 inserted into the opening 26 of the insulating cover 24 is within the opening 26 of the insulating cover 24. The inserted shoe 28 is formed larger than the width W2. The rotating rod 56 may be supported directly and freely at the position of the shoe holder 30 without using the fixed shaft 58. Further, since the rotating rod 56 rotates while rolling with respect to the insulating cover 24 (rolling contact), the friction coefficient of the outer surface of the rotating rod 56 is smaller than the friction coefficient of the shoe 28 as in the first embodiment. It is not always necessary to set this way. Since the configuration other than the above is substantially the same as that of the first embodiment, description thereof is omitted.

  According to the current collector of the second embodiment, since the outer diameter D of the rotating rod 56 is formed larger than the width W2 of the shoe 28, the shoe 28 is pressed against the conductor 22 and is within the opening 26 of the insulating cover 24. When traveling in the longitudinal direction of the conductor 22, it does not directly contact the opening 26 portion of the insulating cover 24. Therefore, the opening 26 portion of the insulating cover 24 is not worn by contact with the shoe 28 and wear powder is not generated. Since the rotating rod 56 is rotatably supported by the shoe holder 30, when the rotating rod 56 comes into contact with the opening 26 portion of the insulating cover 24 as the shoe 28 travels, the rotating rod 56 rotates while rolling. Therefore, it is possible to suppress the opening 26 portion of the insulating cover 24 from being worn and generating wear powder. As a result, the amount of abrasion powder caught in the sliding contact portion between the conductor 22 and the shoe 28 is reduced, the increase in the electrical resistance of the sliding contact portion is suppressed, and the occurrence of an overheating accident or signal in the power system that supplies power It is possible to prevent a transmission failure from occurring in a control system that performs transmission. In addition, since the wear of the insulating cover 24 is suppressed, the running of the shoe 28 is stabilized, and the opening 26 is suppressed from spreading, so that it is possible to reliably prevent the shoe 28 from causing a derailment accident. Furthermore, since it is not necessary to guard the opening 26 portion of the insulating trolley 20 with an abrasion resistant material, the insulating trolley 20 does not need to be newly manufactured or modified, which is economical.

  FIG. 6 is an enlarged cross-sectional view showing a conductive sliding rod 62 which is a main part of the third embodiment of the current collector according to the present invention. In the current collector of this embodiment, in the current collector of the first embodiment, a conductive sliding rod 62 that suppresses wear of the insulating cover 24 is used instead of the sliding rod 34. The conductive sliding rod 62 is adjacent to the shoe 28 of the shoe holder 30 and is screwed or the like so as to be inserted into the opening 26 of the insulating cover 24 at the front-rear position on the longitudinal axis thereof. Fixed and supported vertically. The conductive sliding rod 62 is made of, for example, a rod-like body having a circular cross section, and the width W3 of the conductive sliding rod 62 inserted into the opening 26 of the insulating cover 24 is inserted into the opening 26 of the insulating cover 24. The width of the shoe 28 is larger than the width W2, and the hardness of the outer surface of the conductive sliding rod 62 inserted into the opening 26 of the insulating cover 24 is smaller than the hardness of the opening 26 portion (inner surface) of the insulating cover 24. It is formed with such a soft conductive material. In the present embodiment, when the insulating cover 24 is formed of hard polyvinyl chloride, the entire conductive sliding rod 62 is simply made of a conductive material in which conductive powder such as carbon or copper is mixed in soft polyvinyl chloride or soft polyethylene. One layer is formed. The conductive slide rod 62 is formed in a plurality of inner and outer layers instead of a single layer, and the outer surface of the outermost layer is soft so that the hardness of the opening 26 portion (inner surface) of the insulating cover 24 is smaller. The conductive material may be used. Further, the sliding rod 62 may be formed in an elliptical cross-section, a polygon such as a quadrangle, a hexagon, or other non-circular shape. Furthermore, it is not always necessary to set the friction coefficient of the outer surface of the conductive sliding rod 62 to be smaller than the friction coefficient of the shoe 28 as in the first embodiment. Since the configuration other than the above is substantially the same as that of the first embodiment, description thereof is omitted.

  According to the current collector of the third embodiment, since the width W3 of the conductive sliding rod 62 is formed larger than the width W2 of the shoe 28, the opening 26 of the insulating cover 24 is pressed while the shoe 28 is pressed against the conductor 22. When traveling in the longitudinal direction of the conductor 22, it does not directly contact the opening 26 portion of the insulating cover 24. Therefore, the opening 26 portion of the insulating cover 24 is not worn by contact with the shoe 28 and wear powder is not generated. Further, since the conductive sliding rod 62 is made of a conductive material whose hardness is smaller than the hardness of the opening portion of the insulating cover 24, the conductive sliding rod 62 is insulated as the shoe 28 travels. When contacting the opening 26 portion of the cover 24, the conductive sliding rod 62 is worn and generates conductive wear powder. As a result, even if abrasion powder is caught in the sliding contact portion between the conductor 22 and the shoe 28, an increase in the electrical resistance of the sliding contact portion is suppressed, so that an overheating accident or signal transmission is generated in the power system that supplies power. It is possible to prevent the occurrence of transmission problems in the control system to be performed. In addition, since the wear of the insulating cover 24 is suppressed, the running of the shoe 28 is stabilized, and the opening 26 is suppressed from spreading, so that it is possible to reliably prevent the shoe 28 from causing a derailment accident. Furthermore, since it is not necessary to guard the opening 26 portion of the insulating trolley 20 with an abrasion resistant material, the insulating trolley 20 does not need to be newly manufactured or modified, which is economical.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a first embodiment of a current collector for an insulating trolley according to the present invention, in which (a) is a partially sectional front view, and (b) is a left side view of (a). It is a partial cross section front view which expands and shows the shoe holder of FIG. FIG. 3 is a schematic plan view of FIG. 2. FIG. 3 is a left side view of FIG. 2. It is sectional drawing which expands and shows the rotating rod which is the principal part of 2nd Embodiment of the current collector which concerns on this invention. It is sectional drawing which expands and shows the electroconductive sliding rod which is the principal part of 3rd Embodiment of the current collector which concerns on this invention. It is a partial cross section front view which shows the current collector of the conventional insulation trolley. It is a partial cross section side view of FIG. 7 and 8 show a modification of the insulating trolley, in which (a) is a cross-sectional view of a conductor formed in a U-shaped cross section, and (b) is a conductor formed in a U-shaped cross section. Sectional drawing, (c) is a perspective view of an insulating cover having an opening formed laterally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Insulating trolley 22 Conductor 24 Insulating cover 26 Opening 28 Shoe 30 Shoe holder 32 Shoe holder support pressing means 34 Sliding rod 36 Electric cable 38 1st support member 40 Axis 42 2nd support member 44 Bracket 46 1st current collection arm 48 2nd Current collecting arm 50 shaft 52 shaft 54 spring member 56 rotating rod 58 fixed shaft 60 bearing 62 conductive sliding rod W1 width of sliding rod W2 width of shoe W3 width of conductive sliding rod D outer diameter of rotating rod

Claims (3)

  An insulating trolley having a conductor and an insulating cover that covers the conductor so as to have an opening, a shoe that is inserted into the opening of the insulating cover and can run while sliding on the conductor, a shoe holder that holds the shoe, and a shoe holder And a shoe holder supporting pressing means for pressing the shoe against the conductor of the insulating trolley. In the current collector of the insulating trolley, a sliding rod is opened in the insulating cover at a front-rear position in the longitudinal direction of the shoe in the shoe holder. The width of the sliding rod, which is fixedly supported so as to be inserted into the insulating cover and inserted into the opening of the insulating cover, is larger than the width of the shoe inserted into the opening of the insulating cover, and the friction coefficient of the sliding rod is A current collector for an insulation trolley, wherein the current collector is formed to be smaller than a friction coefficient of an opening portion of the insulation cover.   An insulating trolley having a conductor and an insulating cover that covers the conductor so as to have an opening, a shoe that is inserted into the opening of the insulating cover and can run while sliding on the conductor, a shoe holder that holds the shoe, and a shoe holder And a shoe holder supporting pressing means for pressing the shoe against the conductor of the insulating trolley. In the current collector of the insulating trolley, the rotating rod is opened at the front and rear position in the longitudinal direction of the shoe in the shoe holder. The rotating rod is rotatably supported so as to be inserted into the insulating cover, and the outer diameter of the rotating rod inserted into the opening of the insulating cover is formed larger than the width of the shoe inserted into the opening of the insulating cover. Insulating trolley current collector.   An insulating trolley having a conductor and an insulating cover that covers the conductor so as to have an opening, a shoe that is inserted into the opening of the insulating cover and can run while sliding on the conductor, a shoe holder that holds the shoe, and a shoe holder And a shoe holder supporting pressing means for pressing the shoe against the conductor of the insulating trolley. In the current collector of the insulating trolley, a conductive sliding rod is provided at the front and rear positions of the shoe holder in the longitudinal direction of the shoe. The width of the conductive sliding rod that is fixedly supported so as to be inserted into the opening of the insulating cover and that is inserted into the opening of the insulating cover is larger than the width of the shoe that is inserted into the opening of the insulating cover. Insulating trolley current collector, characterized in that the sliding rod has a lower hardness than that of the opening of the insulating cover

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