JPH1134702A - Lengthening device for trolley wire with groove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct and straighten the bending of the final end of the trolley wire with a groove with a simple structure, when the trolley wire with the groove wound to the drum so as to position a groove side to the periphery surface side of the drum is drawn out from a drum. SOLUTION: Plural pulleies 25, 26 are arranged turnably on the same plane and also the vertical interval between the pulley 25 arranged on both sides and the pulley 26 arranged upward its center is adjusted freely and recessed parts 25a, 26a including projections 25b, 26b which are nearly matched with the arc outer periphery surface including the groove of the trolley wire with the groove are formed on the circumferential outer surfaces of the pulleies 25, 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire drawing device for straightening a grooved trolley wire for supplying power to a current collector such as a train.

[0002]

2. Description of the Related Art A conventional method of erection of a trolley wire 6 with a groove will be described. A trolley 2 movably arranged on a track 1
, A drum base 3, a work base 4, and a work table 5 are respectively mounted. A drum 7 around which a grooved trolley wire 6 is wound is mounted on the drum base 3. A pulley 8 is mounted on the upper end of the worktable 5. Also, a suspension line 9 is provided above the track 1.
And an auxiliary suspension line 10 is provided. Auxiliary suspension line 10
Is installed immediately below the suspension line 9. Hanging fittings 11 and hangers 12 are frequently suspended from the suspension line 9 and the auxiliary suspension line 10 at predetermined intervals. Thus, the grooved trolley wire 6
Is pulled out of the drum 7, extends horizontally via the pulley 8, and is suspended by the worker on the work base 4.
By hanging the lower end of the hanger 12 in the groove of the grooved trolley wire 6, the hanger 12 is suspended by the suspension line 9 and the auxiliary suspension line 10. Thereby, the grooved trolley wire 6 is horizontally installed at a predetermined height above the track 1. The grooved trolley wire 6 erected in this manner can be extended while maintaining the tension relationship with the drum 7 when the final end is wound around the drum 7, so that it can be erected horizontally. If the last end is pulled out, there will be no tension with the drum 7,
The final end remains bent and cannot be installed horizontally. For this reason, the vicinity of the final end is leveled by using a wire drawing device having a complicated structure. conventionally,
The grooved trolley wire 6 is wound so that the current collector contact surface side is positioned on the peripheral surface side of the drum 7, and a wire drawing device corresponding to this is used. In other words, the wire drawing device is configured such that the state in which the current collector contact surface side of the grooved trolley wire 6 is bent in an arc shape is horizontal.

[0003]

When the current collector contact surface side of the conventional grooved trolley wire 6 is wound around the drum 7 on the peripheral surface side, the trolley wire 6 is pulled out from the drum 7 and extends horizontally. In such a case, the current collector contact surface side is affected by the arc of the peripheral surface wound around the drum 7, so that horizontality cannot be sufficiently ensured, which has been a serious problem as a trolley wire for a high-speed running train. Therefore, the current collector contact surface of the grooved trolley wire is not located on the peripheral surface side of the drum, but the groove side is located on the peripheral surface side of the drum. It has been devised that the contact surface side is hardly affected by the circumferential arc of the drum. However, in the case of such a trolley wire with a groove, a wire drawing device that straightens the bending at the final end cannot be used due to the positional relationship with the groove, and the trolley wire with a groove is hit with a simple tool or the like. Since the wire was drawn, the work efficiency was poor and horizontality could not be sufficiently secured.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. A first aspect of the present invention is that a plurality of pulleys 24, 25, 26 are rotatably arranged on the same plane, and pulleys 24, 25 arranged on both sides are provided.
And a pulley 25 disposed above the center of the pulley.
A grooved trolley wire drawing device in which concave portions 25a and 26a including ridges 25b and 26b substantially matching the arc outer peripheral surface including the groove 21a of the grooved trolley wire 21 are formed on the outer peripheral surfaces of the trolley wires 5 and 26. is there. The second invention comprises three pulleys 24,
25 and 26 are rotatably arranged on the same plane, and the three pulleys 24, 25 and 26 are positioned so that their center points form a triangle, and one of the pulleys 26 can be moved. This is a grooved trolley wire drawing device in which concave portions 25a and 26a for receiving the outer peripheral surface including the groove 21a of the grooved trolley wire 21 are formed on the outer peripheral surface of the pulleys 24, 25 and 26. According to a third aspect of the present invention, a plurality of pulleys 24, 25, and 26 are rotatably arranged on the same plane, and have pulleys 24 and 25 arranged on both sides and a pulley 26 arranged above the center thereof. The pulleys 24 arranged on both sides are made adjustable in the vertical distance between them,
Gears 34 and 35 are provided on shafts 27 and 28 of the pulley 25, and the gears 34 and 35 are connected via an idle gear 38, and grooves of the trolley wire 21 with grooves are formed on outer circumferential surfaces of the pulleys 24, 25 and 26. This is a grooved trolley wire drawing device formed with concave portions 25a and 26a including ridges 25b and 26b substantially coinciding with an arc outer peripheral surface including 21a.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
A description will be given based on FIG. The grooved trolley wire 21 has grooves 21a on both sides at a position which is substantially circular in cross section and slightly shifted from the center thereof.
Is parallel to the longitudinal direction. The groove 21a is for locking the hanging bracket and the hanger. This groove 21a
A large substantially semi-circular portion located below is a contact surface 21b with the current collector of the train. The trolley wire 21 is wound around a drum (not shown) so that one groove 21a side is located on the peripheral surface side of the drum, and is pulled out from the drum when the trolley wire is erected. Therefore, when this trolley wire 21 is pulled out from the drum and installed, the current collector contact surface 21b
Can be easily obtained. The wire drawing device 22
Basically, three pulleys 24 to 26 are rotatably mounted on the same plane with respect to a housing 23 having a U-shaped section. The housing 23 includes a U-shaped portion 23a.
An adjust pulley mounting portion 23b is formed so as to partially protrude upward from a central portion on one side. A drive pulley 24 and a driven pulley 25 are rotatably mounted via drive shafts 27 and 28 on both sides inside the U-shaped portion 23a of the housing 23. The adjustment pulley 26 is provided with the L-shaped adjustment plate 2.
9 is rotatably attached to the side surface of the horn 9 via an adjustment shaft 30. The adjusting plate 29 is attached to an adjusting pulley attaching portion 23b of the housing 23 so that both ends thereof are held therebetween so as to be vertically movable. The upper end of an adjusting screw 31 is fixed to the bottom surface of the adjusting plate 29. The adjusting screw 31 penetrates the bottom surface of the housing 23 and protrudes downward. An adjustment handle 32 is attached to a protruding portion of the adjustment screw 31. By turning the adjustment handle 32, the adjustment screw 31 can be moved up and down, and furthermore, the adjustment plate 29 and the adjustment pulley 26 can be moved up and down. . Two lancet springs 33 are interposed between the bottom surface of the adjustment plate 29 and the bottom surface of the housing 23. One ends of the drive shaft 27 and the driven shaft 28 protrude greatly from the side surface of the housing 23, and a drive gear 34 and a driven gear 35 are attached to the protruding portion via a nut 36 and a snap ring 37. The drive gear 34 and the driven gear 3
An idle gear 38 is interposed between the gears 5 so that the rotation of the drive gear 34 can be transmitted to the driven gear 35. As a result, the rotating power of the drive pulley 24 at the time of correcting the bending of the grooved trolley wire 21 is reduced by the driven pulley 2.
5 and can be corrected with a small force. The idle gear 38 is attached to a side surface of the housing 23 by an idle shaft 39 and a snub ring 40. A gear cover 41 is attached to the housing 23 so as to cover these gears 34, 35, 38. The handle 42 is opposed to the side surface of the housing 23 and the side surface of the gear cover 42.
Is attached, and the wire drawing device 22 can be easily handled by holding the handle 42. The drive pulley 24, the driven pulley 25, and the adjustment pulley 26 are arranged on the same plane, and the drive pulley 24 and the driven pulley 25 are arranged on both sides. These pulleys 24, 25 and 26 have a trolley wire 21
The groove 21a is formed in a shape substantially coinciding with the arc outer peripheral surface including the groove 21a. Specifically, these pulleys 24, 25, 2
The circumferential outer surface shape of No. 6 is such that protrusions 25b, 26b are formed in substantially semicircular concave portions 25a, 26a. Thus, the trolley wire 21 is pulled out from the drum and is successively erected, but when the final end is pulled out from the drum,
Since the final end of the trolley wire 21 remains bent, the wire drawing device 22 is arranged on the horizontal portion of the trolley wire 21 as shown in FIG. That is, the trolley wire 21 is arranged such that one groove 21a side of the trolley wire 21 matches the concave portion 25a and the ridge 25b on the outer peripheral surface of the drive pulley 24 and the driven pulley 25. Next, adjust handle 32
Is turned to move the adjustment screw 31 downward, thereby adjusting the adjustment plate 29 and the adjustment pulley 2.
6, the other groove 21b of the trolley wire 21 is aligned with the concave portion 26a and the ridge 26b on the outer circumferential surface of the adjust pulley 26 as shown in FIG. At this time, the trolley wire 21 is in linear contact with the outer peripheral surfaces of the three pulleys 24, 25, 26. In this state, the handle 42
By moving the drawing device 22 horizontally toward the final end of the trolley wire 21 with
While rotating 25 and 26, the trolley wire 21 can be straightened by correcting the bending to the final end. That is, the trolley wire 21 has three pulleys 24, 25, 26.
The contact is made at three places, and the straight line is forcibly corrected.

[0006] According to the grooved trolley wire drawing device 22, a plurality of pulleys 24, 25, 26 are rotatably arranged on the same plane, and the pulleys 2 arranged on both sides are arranged.
4 and 25 and a pulley 26 disposed above the center thereof, the vertical distance between the two being adjustable, and an arc including the groove 21a of the grooved trolley wire 21 on the outer peripheral surface of the pulleys 24, 25 and 26. Ridges 25b, 26 substantially coinciding with the outer peripheral surface
Since the concave portions 25a and 26a including the groove b are formed, the grooved trolley wire when the grooved trolley wire 21 wound around the drum is pulled out from the drum so that the groove 21a side is positioned on the peripheral surface side of the drum with a simple configuration. The bending at the final end of the line 21 can be straightened.

[0007]

According to the present invention, a plurality of pulleys 24,
25 and 26 are rotatably arranged on the same plane,
It has pulleys 24 and 25 arranged on both sides and a pulley 26 arranged above the center of the pulleys, and the vertical distance between the two can be adjusted. The outer peripheral surfaces of the pulleys 24, 25 and 26 Concave portions 25a, 26a including ridges 25b, 26b substantially coinciding with the arc outer peripheral surface including the groove 21a
Is formed, the grooved trolley wire 21 wound around the drum so that the groove 21a side is positioned on the peripheral surface side of the drum with a simple configuration is drawn out from the drum.
Can be straightened by correcting the bending at the final end of the.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory view of a state in which a grooved trolley wire is straightened by a grooved trolley wire drawing apparatus of the present invention.

FIG. 2 is an explanatory view showing a state in which grooved trolley wires are arranged in the grooved trolley wire drawing apparatus of the present invention.

FIG. 3 is a central sectional view of FIG.

FIG. 4 is an explanatory view of a gear side of the grooved trolley wire drawing device of the present invention.

FIG. 5 is a view for explaining a conventional method of erection of a grooved trolley wire.

[Explanation of symbols]

21: grooved trolley wire, 21a: groove, 24, 25, 26
... pulleys, 25a, 26a ... recesses, 25b, 26b ...
Ridge.

Claims (3)

[Claims] 1. A plurality of pulleys 24, 25, 26 are rotatably arranged on the same plane, and a pair of pulleys 24, 25 arranged on both sides and a pulley 2 arranged above the center thereof.
And a vertical ridge 25 which is adjustable to adjust the vertical distance between the two, and whose outer peripheral surface of the pulleys 24, 25, 26 substantially coincides with the outer peripheral surface of the arc including the groove 21a of the grooved trolley wire 21.
A grooved trolley wire drawing device formed with concave portions 25a and 26a including b and 26b. 2. Three pulleys 24, 25, 26 are rotatably arranged on the same plane, and the three pulleys 24, 25, 26 are rotatable.
25, 26 are positioned such that their center points form a triangle, and one of the pulleys 26 therein is movable;
A concave portion 25 for receiving the outer peripheral surface including the groove 21a of the grooved trolley wire 21 on the outer peripheral surface of the pulleys 24, 25, 26.
a, a grooved trolley wire drawing device formed with 26a. 3. A plurality of pulleys 24, 25, 26 are rotatably arranged on the same plane, and a pair of pulleys 24, 25 arranged on both sides and a pulley 2 arranged above the center thereof.
6, the upper and lower spaces of which can be adjusted freely, and the shafts 27, 2 of the pulleys 24, 25 arranged on the both sides.
8 are provided with gears 34 and 35, and the gears 34 and 35 are connected through an idle gear 38,
Grooves 21a of trolley wire 21 with grooves on the outer peripheral surfaces of 25 and 26
And a grooved trolley wire drawing device formed with concave portions 25a and 26a including ridges 25b and 26b substantially coincident with an arc outer peripheral surface including the following.