JP2019171921A - Trolley wire flexure device - Google Patents

Abstract

To provide a trolley wire flexure device that can bend the trolley wire with high precision and easily change the bending angle.SOLUTION: The holding members 2, 2 that hold the trolley wire T at intervals are pivoted on the middle frame board 1a of a frame body 1. Facing to the central part between the gripping members 2,2 on the upper frame plate 1b of the frame body 1 from above to support a pressing member 3 which bends by pressing down the central part of the gripping portion of the trolley wire T by hydraulic drive. The gripping member 2 is pivoted rotatably to the intermediate frame plate 1a along the bending of the trolley wire T by a horizontal rotating shaft 9, and is configured with a base body 5 and a pressing lid 6 that can be opened and closed so as to sandwich the trolley wire T by a hinge portion. The base body 5 and the pressing lid 6 are provided with horizontally extending receiving grooves 6b, 8a for receiving the trolley wire T which comprises engaging protrusions 6c, 8b corresponding to both engaging grooves of the trolley wire T on the inner sides facing each other. On the lower frame plate 1c of the frame body 1, a height-changeable stopper 4 is erected so as to face the pressing member 3 in the vertical direction and restrict the position where the trolley wire T is pushed down by the pressing member 3.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a trolley wire bending apparatus for bending an end portion of a trolley wire upward in order to assemble an end portion of the trolley wire to a section insulator that connects adjacent sections of an AC electrification section of a train line while being electrically insulated from each other. Is.

As shown in FIG. 7, the section insulator S is insulated while electrically insulating the adjacent end portions of the two trolley wires T1 and T2 installed adjacent to each other in the extending direction of the train line with an insulating member S1. The pantograph is slid without being interrupted by the sliders S3 and S4 along the insulating member S1 and held by the connection fitting S2 fixed to both ends of the member S1. The ends of the trolley wires T1 and T2 are assembled into the connection fitting S2 of the section insulator S in a state of being bent obliquely upward so as to be retracted from the sliding position of the pantograph.
Conventionally, in order to bend the trolley wire, two auxiliary tools with a handle whose front end portion is folded back in a U-shape are used, one end portion being the bent portion of the trolley wire and the other end of the trolley wire. There is one that bends the end portion of the trolley wire by hooking on the respective portions and pushing and turning the handle on the other hand side upward in the orthogonal direction while one side is fixed (Patent Document 1).
Also, a horizontal support part that supports the trolley wire supported between the lower portions of a pair of opposing side surfaces of the base body, and an intermediate portion that is also supported between the upper parts of both side surfaces and presses the trolley wire to one end side. Bending of a trolley wire comprising a tilting portion having a gear at the other end edge and a handle that is rotatably supported between the side surfaces with a gear meshing with the gear of the tilting portion at the base end portion There is a tool (Patent Document 2).
In addition, a pair of push-up members that bend the trolley wire are fixed to the front and rear sides of the sliding member that can be moved up and down with a hydraulic jack, and a substantially triangular bending member that bends the trolley wire between the push-up members. There is a trolley wire bending tool in which a pair of clamping claws that support and fix a trolley wire at a protruding corner of a bending member are provided (Patent Document 3).

JP 2000-280795 JP JP 2012-157897 Registered Utility Model No. 3121205

If the bending angle and curvature of the trolley wire are not accurate, the section insulator will not be sufficiently secured by the connecting bracket, the tensile strength will be insufficient and the expected performance will not be achieved, or the trolley wire will pass through the pantograph from the connecting bracket. Protruding to the position, local wear of the trolley wire may occur, leading to breakage. For this reason, a trolley wire bending tool is required to have high accuracy in bending angle and curvature.
However, the above-described conventional bending assist tool described in Patent Document 1 is a bending operation that relies on the arm force, imposes excessive labor on the operator, and has low accuracy in bending angle and curvature.
In the bending tool described in Patent Document 2, the tilting portion with which the gear meshes is tilted so that the pressing body pushes up the trolley line with the pivot position as a fulcrum in accordance with the tilting operation of the handle portion. The fulcrum is relatively moved in the direction in which the trolley wire extends, and so-called bending wrinkles are likely to occur where a large curvature is generated at the transition from the appropriate bent portion having the smallest curvature to the straight portion. Moreover, since it is not the structure which controls the bending direction of a trolley wire, it is easy to make a mistake in a bending direction.
The bending tool described in Patent Document 3 has relatively high bending angle and curvature accuracy, but requires replacement of tools and parts corresponding to different angles and curvatures.
Therefore, the present invention solves the above-mentioned problems and bends the trolley wire in an appropriate direction with a highly accurate angle and curvature that matches the section insulator without forcing the operator to make a great effort. An object of the present invention is to provide a trolley wire bending apparatus that can be easily adjusted.

  In order to solve the above-described problems, a trolley wire bending apparatus according to the present invention includes a frame body 1 including a horizontal upper frame plate 1b and a lower frame plate 1c that are vertically opposed to a vertical middle frame plate 1a, and an intermediate frame plate. A pair of gripping members 2 and 2 that are pivotally supported at both front and rear end portions of the substantially middle portion of 1a in the width direction and that can grip the trolley wire T at intervals in the length direction, and a pair of upper frame plates 1b. The center of the gripping portion of the trolley wire T held on the gripping member 2 with a predetermined length remaining from the top, facing the center between the gripping members 2 and 2 from above is pushed down from above by hydraulic drive. A pressing member 3 for bending one end of the line T is provided. The gripping member 2 is pivotally supported by the middle frame plate 1a so as to be rotatable along the bending of the trolley wire T by a horizontal rotating shaft 9, and is connected to each other by hinge portions 5a and 6a at the lower end portion, and the upper end portions are screwed together. Thus, the trolley wire T is sandwiched between the pair of holding pieces 5 and 6 that can be opened and closed. The holding pieces 5 and 6 are provided with engaging protrusions 6c and 8b corresponding to both engaging grooves of the trolley wire T in linear receiving grooves 6b and 8a extending in the horizontal direction for receiving the trolley wire T on the inner sides facing each other. Prepare each. The pressing member 3 is fixed to the upper frame plate 1b and has a hydraulic cylinder 14 provided with a piston rod 14a protruding so as to be able to advance and retreat downward. And a substantially triangular bending die 15 having a top portion 15a. On the lower frame plate 1 c of the frame body 1, a height-changeable stopper 4 is provided so as to oppose the pressing member 3 in the vertical direction and regulates the position where the trolley wire T is pushed down by the pressing member 3.

  According to the present invention, the operator can easily bend the trolley wire without requiring a great force, and can bend the angle and the curvature with high accuracy without mistaking the bending direction. It can be easily changed, and has the effect that no bending wrinkles remain at the transition from the bent portion to the straight portion.

It is a perspective view of the trolley wire bending apparatus which concerns on this invention. It is a front view of the trolley wire bending apparatus which concerns on this invention. It is a side view of the trolley wire bending apparatus of FIG. It is a top view of the trolley wire bending apparatus of FIG. It is a perspective view of the open state of a holding member. It is a front view of the trolley wire bending apparatus of the state which bent the trolley wire. It is a perspective view of a section insulator.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4, the trolley wire bending apparatus includes a pair of gripping members 2 and 2 that are assembled to face a casing 1 that is opened forward, and a pressing member that is assembled to the top of the casing 1. 3 and a stopper 4 assembled to the lower part of the housing 1. The housing 1 constitutes a frame of the apparatus, and includes a vertical middle frame plate 1a, horizontal upper frame plates 1b and lower frame plates 1c coupled to upper and lower ends of the middle frame plate 1a, front and rear (left and right in FIG. 2). And a side plate 1d that couples them to each other.

  The pair of gripping members 2 and 2 are arranged at both ends in the front-rear direction of the middle frame plate 1a of the housing 1 and fix the ends of the trolley wire T at intervals in the length direction. As shown in FIG. 5, the gripping member 2 is rotatable up and down on the base body 5 by a base body 5 which is one clamping piece rotatably supported by the middle frame plate 1a and hinges 5a and 6a at the lower end portions. A pressing lid 6 which is the other sandwiched piece, and a fixing screw 7 for fixing the trolley wire between the base 5 and the pressing lid 6 are provided. The base 5 includes a substantially cylindrical base portion 8 on the front side, and a rotating shaft 9 that extends rearward on the central axis of the base portion 8 and is rotatably supported by the middle frame plate 1 a via the bearing portion 10. . The intermediate portion of the base portion 8 is provided with a receiving groove 8a extending linearly in the lateral direction for fitting the trolley wire. The receiving groove 8a has a cross-sectional shape that substantially corresponds to the cross-sectional shape of one half of the trolley wire T, and has an engaging protrusion 8b that engages with the engaging groove of the trolley wire T. The presser lid 6 includes an upper end surface that is curved in an arc shape along the outer peripheral side surface of the base portion 8, and has a substantially rectangular plate shape that overlaps with the front surface of the base portion 8 of the base 5. The intermediate portion of the presser lid 6 is provided with a receiving groove 6b that is linearly continuous in the lateral direction for receiving the remaining half of the trolley wire received in the receiving groove 8a. The receiving groove 6b has an engaging protrusion 6c that is engaged with the engaging groove of the trolley wire T. A positioning piece 11 is fixed to a rear portion of the base 8 of one gripping member 2 by a mounting bolt 12 that is horizontal in the radial direction. The positioning piece 11 crosses the extending position of the receiving groove 8a of the base portion 8 in the orthogonal direction so that the tip of the trolley wire T received by the gripping member 2 abuts.

  The pressing member 3 is connected to a hydraulic pump (not shown), is fixed through the upper frame plate 1b and the central portion of the fixing flange 13 fixed to the lower surface thereof, protrudes downward, and moves forward and backward by hydraulic drive. 14a includes a cylinder 14 into which the door 14a is freely inserted and removed, and a bending die 15 coupled to the piston rod 14a. The bending die 15 has a horizontally long, substantially rectangular shape, and has a top portion 15a that is inclined downward from both side surfaces so as to bend the trolley wire into a predetermined shape and gently converges to the center.

  The stopper 4 faces the middle part of the gripping members 2 and 2, faces the top part 15 a of the bending die 15, and stands upright at the center part of the lower frame plate 1 c of the housing 1. The stopper 4 includes an adjustment nut 16 that is fixed to the lower frame plate 1c with a plurality of fixing bolts that are inserted at equal intervals around the axis, a lock nut 17 that is superimposed on the adjustment nut 16, and a screw shaft portion 18b that includes the adjustment nut 16 and An adjustment bolt 18 that is screwed into the lock nut 17 and has a stopper seat 18a at the upper end is provided. The adjustment bolt 4 can be rotated with respect to the adjustment nut 16 to change the vertical position of the stop seat 18a. When the height position of the stop seat 18a is determined, the lock nut 17 is tightened and the adjustment nut 16 is pressed against the adjustment nut 16. By doing so, the rotation is stopped and fixed. Therefore, the adjusting bolt 18 positions the lowered position of the bending die 15 for forming an appropriate bend in the trolley line between the gripping members 2 and 2 by the stop seat 18a.

  In order to bend the trolley wire T with this trolley wire bending apparatus, the trolley wire T is first inserted into the receiving groove 8a of the base 5 of the gripping member 2, and the tip of the trolley wire T is brought into contact with the positioning piece 11 to position the bending portion. Then, the presser lid 6 is superposed on the base body 5, the trolley wire T is sandwiched between the two, and the fixing screw 7 is tightened and fixed. At this time, if the engagement protrusion 8b is engaged with the engagement groove T1 of the trolley wire T, the engagement protrusion 6c is also engaged with the engagement groove T1 when sandwiched between the pressing lid 6 and the base body 5. The vertical direction of the trolley line T is properly arranged.

  Next, when the stopper bolt 18 of the stopper 4 is rotated, the adjustment bolt 18 moves up and down with respect to the adjustment nut 16, so that the height position of the stopper seat 18 a can be changed, and the lock nut 17 is tightened and pressed against the adjustment nut 16. Then, the stopper seat 18a is fixed at a predetermined height.

  When the trolley wire T is set in the trolley wire bending apparatus in this way and the bending die 15 is lowered by the cylinder 14 of the pressing member 3 by operating the hydraulic pump, the intermediate trolley between the pair of gripping members 2 and 2 is operated. The center part of the line T is pushed down and pushed and bent along the lower surface of the bending die 15. When the bending die 15 descends and the trolley wire T is bent into a predetermined shape, the trolley wire T comes into contact with the stopper seat 18a of the stopper 4 and stops the bending die 15 as shown in FIG. At this time, when the trolley wire T begins to bend, the trolley wire T is firmly held in the lateral length range in which the holding lid 6 of the gripping members 2 and 2 and the base body 5 face each other. There is no slip between T and the straight portion of the trolley wire is secured in the length range of the receiving groove 8a, and the bend is made at a predetermined angle and curvature along the bending die 15 without bending before and after the bend. It is formed. If the height position of the stop seat 18a is changed, the bending angle can be changed, and different bends according to the section insulator can be formed without changing the members.

DESCRIPTION OF SYMBOLS 1 Housing | casing 1a Middle frame board 1b Upper frame board 1c Lower frame board 1d Side board 2 Holding member 3 Pressing member 4 Stopper 5 Base body 5a Hinge 6 Holding lid 6a Hinge 6b Receiving groove 6c Engaging protrusion 7 Fixing screw 8 Base 9 Rotating shaft 8a Receiving groove 8b Engaging protrusion 11 Positioning piece 12 Mounting bolt 13 Fixing flange 14 Cylinder 14a Piston rod 15 Bending die 15a Top 16 Adjustment nut 17 Lock nut 18 Adjustment bolt 18a Stopper seat 18b Screw shaft S S Section insulator S1 Insulation member S2 Connecting bracket S3 Slider S4 Slider T Trolley wire T1 Trolley wire T2 Trolley wire

Claims (3)

A frame comprising a horizontal upper frame plate and a lower frame plate vertically opposed to a vertical middle frame plate;
A pair of gripping members that are pivotally supported at both front and rear ends of the middle frame plate at the upper and lower substantially middle portions, and that can grip the trolley wire at intervals in the length direction;
Supported by the upper frame plate, facing the center part between the pair of gripping members from above, the center part of the gripping part of the trolley wire respectively held by the gripping member with the tip part remaining a predetermined length from above. In a trolley wire bending apparatus comprising a pressing member that is pushed down by a hydraulic drive to bend one end of a trolley wire,
The gripping member is pivotally supported by the middle frame plate so as to be rotatable along a bending of a trolley wire by a horizontal rotation shaft, and is connected to each other by a hinge portion at a lower end portion, and screwed at the upper end portions to form a trolley wire. A pair configured to be openable and closable so as to be sandwiched, and provided with engaging protrusions corresponding to both engaging grooves of the trolley wire in a linear receiving groove extending in the horizontal direction for receiving the trolley wire on the inner side facing each other Of holding pieces,
The pressing member is fixed to the upper frame plate and has a hydraulic cylinder having a piston rod protruding so as to be able to advance and retreat downward. The pressing member is fixed to the piston rod and has a top portion at a lower end which is bent into a predetermined shape at the lower end portion. A substantially triangular bending mold,
A trolley wire bend characterized in that a height-changeable stopper is provided on the lower frame plate of the frame body so as to oppose the pressing member in the vertical direction and regulates the position where the trolley wire is pushed down by the pressing member. apparatus. The stopper includes an adjustment nut that is fixed to the lower frame plate, an adjustment bolt that includes a stopper seat that a screw shaft is screwed into the adjustment nut, and a trolley wire that is pushed down by the pressing member abuts on the upper end. A lock nut that is screwed onto the adjustment bolt and tightened to press against the adjustment nut;
The trolley wire bending apparatus according to claim 1, wherein the bending angle of the trolley wire is changed by changing the vertical position of the stopper seat by rotating the adjustment bolt.   A positioning piece is provided that rises in a direction orthogonal to the trolley wire to be processed fixed to the gripping member and positions the bending position by leaving a predetermined length from the gripping member to the tip by contacting the tip of the trolley wire. The trolley wire bending apparatus according to claim 1 or 2, characterized by the above.

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