JP6486438B1 - Trolley wire pulling device and installation position adjusting method - Google Patents

Abstract

To provide a trolley wire pulling device and an installation position adjustment method capable of reducing labor and time for adjusting the installation position of a trolley bar to an appropriate position.
A trolley wire pulling device 50 is connected to a mounting portion 61 having a mounting surface 63 and a mounting portion 61, and the stationary surface 64 of the elevator 1 is installed in a state where the mounting surface 63 faces upward. A jack base 60 having a mounting portion 62 to be mounted, a main body 71 including a piston storage chamber, and at least a part of the main body 71 mounted on the mounting surface 63 in an installed state. And a jack device 70 having a piston 72 that moves forward and backward, a piston fixing portion 81 that is fixed to the tip end portion of the piston 72, and a trolley wire fixing portion 82 that is fixed to the lower end portion of the trolley wire 4. 72 and a connecting member 80 that connects the lower end of the trolley wire 4.
[Selection] Figure 3

Description

  The present invention relates to an elevator trolley wire pulling apparatus. The present invention also relates to a trolley wire installation position adjustment method.

  An elevator used in a high facility such as a radio tower generally includes a plurality of metal trolley wires extending in the vertical direction instead of cables as means for supplying power to the cage. Then, power is supplied to the car by sliding a pantograph installed on the car moving up and down in the vertical direction with respect to the trolley wire. In order to supply electric power of different voltages to the basket, the trolley wires have different potentials. As described in Patent Document 1, each trolley wire is configured by connecting a plurality of trolley bars (segments) in the vertical direction at predetermined intervals.

JP 52-86195 A

  The joint portion of the trolley bar 12 adjacent in the vertical direction on the trolley wire 4 is clamped by the joint clamp 13 and the hanger clamp 18 shown in FIGS. 8 and 9, the joint clamp 13 is fixed to the stationary part 19 of the elevator 1 by a hanger clamp 18. As shown in FIG. 9, the joint clamp 13 includes, for example, a pair of metal clamping plates 13a, bolts 13b, and nuts 13c. The pair of sandwiching plates 13 a sandwich the connecting portion of the two trolley bars 12 so as to straddle the two adjacent trolley bars 12. The two trolley bars 12 are joined by tightening the pair of clamping plates 13a so as to approach each other with the bolts 13b and the nuts 13c. The joint clamp 13 is tightened to such an extent that the expansion and contraction due to the change in the environmental temperature of the trolley bar 12 is allowed.

  Referring to FIG. 8 again, the hanger clamp 18 has a pair of clamping plates 18a and 18b, a fastening means 18c, and a fixing portion 18d. The fixed portion 18d includes a shaft portion 18e provided with a male screw and a nut 18f. After inserting the shaft portion 18e into the through hole of the stationary portion 19 of the elevator 1, the hanger clamp 18 is fixed to the stationary portion 19 by tightening the nut 18f to the distal end side of the shaft portion 18e. The fastening means 18c is composed of a bolt and a nut. The pair of clamping plates 18a and 18b are clamped so as to approach each other by the fastening means 18c, whereby the joint clamp 13 is clamped by the hanger clamp 18 and positioned with respect to the stationary part 19.

  An additional hanger clamp 18 may be provided at a location other than the joint portion of the adjacent trolley bar 12. Moreover, the location of the joint part of the trolley bar 12 where the hanger clamp 18 is not provided may exist depending on the specification. Even if a slight gap is generated between the two trolley bars 12 due to deterioration of the trolley bar 12 or the like, one trolley bar 12 and the other trolley bar 12 are electrically connected via a metal joint clamp 13. The Therefore, a current can be reliably passed through the connecting portion of the trolley wire 4.

  The trolley wire 4 is clamped at two or three places by anchor clamps 15 shown in FIG. The anchor clamp 15 includes a main body 15 a, an anchor pin 15 b, and an insulating cap 15 c, and the main body 15 a has a pair of sandwiching plates 15 d and 15 e like the hanger clamp 18. The pair of sandwiching plates 15 d and 15 e is held by sandwiching the trolley bar 12 a in the same manner as the hanger clamp 18. The main body 15a is fixed to a stationary part (not shown) of the elevator 1 with the same structure as the hanger clamp 18, and the anchor pin 15b protrudes from the main body 15a in the horizontal direction with the anchor clamp 15 fixed. The pin portion 15f of the anchor pin 15b is surrounded by an insulating cap 15c.

  As shown in FIG. 11, the trolley bar 12a fixed by the anchor clamp 15 has a dedicated structure. Specifically, the trolley bar 12a has a concave portion 23 having a shape corresponding to the pin portion 15f of the anchor pin 15b, and the pin portion 15f of the anchor pin 15b is fitted into the concave portion 23. The fitting of the pin portion 15f prevents the trolley bar 12a from being displaced downward.

  Since the hanger clamp 18 is fixing the said connection part only with the fastening force of a volt | bolt and a nut, the force which prevents the downward movement of the trolley bar 12 is weak. In such a background, the anchor pin 15b may deteriorate due to aging, vibration, etc., and the trolley bar 12a may be displaced. As a result, two adjacent trolley bars that should be installed without any gaps. There may be a gap 24 that exceeds the allowable length between the two. Then, as shown in FIG. 12, abnormal noise may occur when the shoe 21 attached to the pantograph 20 of the cage 5 moves through the gap 24.

  In order to suppress this abnormal noise, it is necessary to raise and re-fix a large number of trolley bars 12 to appropriate positions. However, there are currently no tools or jigs specialized for this lifting work. Therefore, when abnormal noise occurs, the maintenance worker must re-fix the trolley bars 12 existing in large numbers in facilities such as high radio towers one by one at an appropriate position. Labor is required.

  Therefore, an object of the present invention is to provide a trolley wire pulling apparatus and an installation position adjustment method that can reduce the labor and time for adjusting the installation position of the trolley bar to an appropriate position.

  In order to solve the above-mentioned problems, a trolley wire pulling device according to the present invention includes a plurality of trolley bars connected so as to extend substantially in a straight line, and at least in a trolley wire that supplies power to an elevator car. A trolley wire pulling device used to pull up one trolley bar, wherein the trolley wire pulling device is connected to the mounting portion having the mounting surface and the mounting portion described above, and the mounting surface is in an installed state in which the mounting surface faces upward. A jack stand having an attachment part attached to a stationary part of an elevator; and a main body including a piston accommodation chamber, which is placed on the placement surface described above in the installation state, and at least a part thereof is accommodated in the piston accommodation chamber; A jack device having a piston that moves forward and backward with respect to the piston housing chamber, a piston fixing portion that is fixed to a tip portion of the piston, and a lower side of the trolley wire It has a trolley wire fixing portion fixed to parts, and a connecting member for connecting the lower end portion of the piston and the trolley wire.

  The trolley wire includes a structure in which a plurality of segments are connected. In this specification, this segment is expressed as a trolley bar.

  According to the present invention, the piston of the jack device and the lower end portion of the trolley wire can be connected by the connecting member with the trolley wire pulling device attached to the stationary portion of the elevator. In this state, the holding force of the hanger clamp or anchor clamp holding each trolley bar is weakened or eliminated with respect to all the trolley bars up to the gap generated by the displacement of one or more trolley bars. In addition, one or more trolley bars can be lifted simply by moving the piston upward. Therefore, by pulling up one or more trolley bars with a jack device until the height of the top trolley bar where the slippage has occurred becomes the appropriate installation height, a plurality of trolley bars can be appropriately adjusted at the same time. Can be raised to installation height. Therefore, the labor and time for adjusting the installation position of the trolley bar to an appropriate position can be greatly reduced.

  Further, in the present invention, the mounting surface is substantially flat, and the mounting surface is substantially perpendicular to the vertical direction in the installed state, and the attachment portion is connected to the mounting surface and the mounting surface is You may include the flat plate part which has a long hole extended in a perpendicular direction, and the fastening means fastened by the said long hole.

  According to the said structure, the attachment height of a flat plate part can be adjusted freely at the insertion position of the fastening means with respect to a long hole. Therefore, the installation height position of the jack device can be easily adjusted so that the height of the uppermost trolley bar where the displacement has dropped is the appropriate installation height position at the position where the piston extends most. . Therefore, the adjustment of the pulling length can be easily performed.

  Further, in the present invention, the connecting member is a shaft member or a cylindrical member extending in one direction, and the connecting member has a tip portion accommodating chamber for accommodating the tip portion of the piston on one side in the axial direction. And having a lower end accommodating chamber for accommodating the lower end of the trolley wire on the other side in the axial direction.

  According to the said structure, a connection member can be reliably fixed to a piston and a trolley bar with a simple structure.

  In the present invention, the trolley wire has a length that substantially matches the height dimension of the specified gap in the expansion portion that secures the specified gap for absorbing expansion and contraction of the trolley bar due to a change in environmental temperature. In addition, an inclusion interposed in the prescribed gap may be further provided.

  FIG. 13 shows a basic configuration of the expansion unit 30. As shown in FIG. 13, in the expansion portion 30, two adjacent trolley bars 12 are arranged so as to face each other in the vertical direction with a predetermined gap 35 having a dimension A. The electrical connection between the two trolley bars 12 is performed, for example, via a jumper wire 31. Since the dimension A of the defined gap is about 10 mm, the pantograph does not deviate from the trolley line even if the defined gap exists. The expansion unit 30 is installed at every predetermined height.

  In such a background, for example, a trolley bar slippage occurs above the second expansion portion, counting from the bottom, and the gap between the upper expansion portions becomes smaller than specified, while It is assumed that the gap of the side expansion portion remains the specified size. In such a case, if the pulling-up operation is performed according to the following procedure, the labor can be remarkably reduced and the operation can be performed efficiently.

  Specifically, first, an inclusion having a length substantially matching the height dimension of the prescribed gap is inserted into the gap of the lower expansion portion. Next, after lowering all trolley bars located below the gap of the upper expansion part until the gap of the upper expansion part becomes a specified dimension, Inclusions having a length substantially matching the height dimension of the defined gap are inserted. Then, pulling work is performed. If the work is performed in this way, the trolley line drawing work can be executed without changing the gap length between the upper and lower expansion portions, and the work can be performed efficiently.

  According to the above configuration, the trolley wire drawing apparatus includes the inclusion having a length that substantially matches the height dimension of the specified gap of the expansion portion. Therefore, when the trolley wire is displaced above the at least one expansion portion, the trolley wire pulling operation can be performed efficiently.

  The trolley wire installation position adjusting method of the present invention includes a plurality of trolley bars connected so as to extend substantially in a straight line, and at least one of the trolley wires in a trolley wire that supplies power to an elevator car. A trolley wire installation position adjustment method for adjusting the installation position of the trolley wire, and a hanger holding each of the trolley bars with respect to all the trolley bars up to a gap generated by a slippage of one or more of the trolley bars A holding release step that weakens or eliminates the holding force of the clamp or the anchor clamp, and after the holding release step, by applying an upper force to the lower end of the lowermost trolley bar, all the up to the gap Pulling up the trolley bar upward, and included in all the trolley bars after the pulling step Wherein each trolley bar that includes a re-holding step of holding by the hanger clamp or anchor clamp in a predetermined position.

  According to the present invention, it is possible to reduce labor and time for adjusting the installation position of the trolley bar to an appropriate position.

  Further, in the present invention, there is an expansion portion that secures a specified gap for absorbing expansion and contraction of the trolley wire due to a change in environmental temperature up to a height at which the gap is generated in the trolley wire, and the lifting Before performing the step, an inclusion insertion step of inserting an inclusion having the same length as the specified gap into a place where the specified gap exists or a place where the specified gap should exist may be performed.

  According to the above configuration, the trolley wire pulling operation can be efficiently performed when the trolley wire is displaced above the at least one expansion portion.

  In the present invention, the pulling step may be performed using the trolley wire pulling apparatus of the present invention.

  According to the said structure, a pulling-up step can be performed easily.

  According to the trolley wire pulling apparatus and the installation position adjusting method according to the present invention, it is possible to reduce labor and time for adjusting the installation position of the trolley bar to an appropriate position.

It is a perspective view when the hoistway of the elevator arrange | positioned at a radio tower etc. is seen from the bottom. It is a schematic diagram which shows the surrounding structure which positions one trolley wire and the reinforcement material of an elevator It is a perspective view of the trolley wire drawing apparatus concerning one embodiment of the present invention. It is a perspective view when the connecting member of the trolley wire drawing apparatus is viewed from obliquely above. It is a schematic diagram showing the trolley line which the clearance gap produced by the gap drop of one or more trolley bars. It is a schematic diagram for demonstrating the trolley wire installation position adjustment method which concerns on one Embodiment of this invention. It is a schematic diagram when an inclusion is seen from the side. It is a perspective view explaining the connection structure of a trolley bar. It is a disassembled perspective view explaining the clamp structure of the trolley bar by the joint clamp fixed to a hanger clamp. It is a disassembled perspective view of an anchor clamp. It is a perspective view of the trolley bar for anchor clamp fixation. It is a schematic diagram for demonstrating the problem at the time of the clearance gap having arisen in the trolley wire by the slippage fall of one or more trolley bars. It is a schematic diagram explaining the structure of an expansion part.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. In the following, when a plurality of embodiments and modifications are included, it is assumed from the beginning that a new embodiment is constructed by appropriately combining those characteristic portions.

  FIG. 1 is a perspective view when a hoistway 6 of an elevator 1 disposed in a radio tower or the like is viewed from below. As shown in FIG. 1, the elevator 1 includes, for example, two guide rails 2 extending in the vertical direction, a plurality of reinforcing members 3 extending in the horizontal direction, and a plurality of trolley wires 4. The elevator 1 includes a guide shoe (not shown) attached to a cage 5 (see FIG. 6). The cage 5 slides on the guide rail 2 so that the cage 5 (see FIG. 6) is inside the hoistway 6. Go up and down. The plurality of reinforcing members 3 are arranged at intervals in the height direction. When one end portion of each reinforcing member 3 in the extending direction is fixed to the inner side surface of one guide rail 2 and the other end portion in the extending direction is fixed to the inner side surface of the other guide rail 2, the guide rail The rigidity of 2 can be increased, which is preferable.

  The plurality of trolley wires 4 are spaced apart from each other in the width direction of the cage 5, and each trolley wire 4 extends in the vertical direction. The plurality of trolley wires 4 have different potentials, and include, for example, two or more high-voltage electric wires of 100V or more having different electric potentials, two or more low-voltage electric wires having different electric potentials of less than 100V, and ground wires. For example, power is supplied to the lighting device in the basket using one high-voltage electric wire and a ground wire, and the lighting device is turned on. Moreover, the electric power for opening and closing the cage door of the elevator 1 is supplied using another high-voltage electric wire and a ground wire. Further, for example, electric power for sending a signal indicating that the car door of the elevator 1 is closed is supplied using one low-voltage electric wire and a ground wire.

  FIG. 2 is a schematic diagram showing one trolley wire 4 and a peripheral structure for positioning the trolley wire 4 on the reinforcing member 3 (see FIG. 1) of the elevator 1. 2 and 8, a hanger clamp 18 (see FIG. 8) and an anchor clamp 15 (see FIG. 10) are attached to the reinforcing member 3. As described with reference to FIGS. 8 and 9, the hanger clamp 18 is used to jointly fix the trolley bars 12 adjacent in the height direction. The hanger clamp 18 is provided at intervals of 1 to 10 m, for example.

  As described with reference to FIGS. 10 and 11, the anchor clamp 15 is provided to place the trolley bar 12 a having a special structure at a predetermined position of the elevator 1. The anchor clamp 15 is provided at intervals of, for example, 25 m to 35 m. As described with reference to FIG. 13, the trolley wire 4 includes the expansion unit 30. The expansion unit 30 is provided to absorb expansion and contraction of the trolley bar 12 due to a change in environmental temperature. In the expansion unit 30, the adjacent trolley bars 12 face each other in the vertical direction with a specified gap 35 (see FIG. 13) of about 10 to 40 mm.

  FIG. 3 is a perspective view of a trolley wire pulling device 50 according to an embodiment of the present invention. As shown in FIG. 3, the trolley wire pulling device 50 includes a jack base 60, a jack device 70, and a connecting member 80. The jack stand 60 includes a placement portion 61 and an attachment portion 62, and the placement portion 61 includes a placement surface 63. The attachment portion 62 is connected to the placement portion 61 and attached to a stationary portion (for example, an angle member) 64 of the elevator 1 in an installation state in which the placement surface 63 faces upward. In the present embodiment, the placement surface 63 is substantially flat, and the placement surface 63 is substantially orthogonal to the vertical direction in the installed state. The mounting portion 62 has a flat plate portion 65 and fastening means 66. The flat plate portion 65 has one or more elongated holes 67 extending in the vertical direction in the installed state. The fastening means 66 includes a bolt 68 and a nut (not shown). The installation height of the jack stand 60 can be appropriately adjusted by changing the tightening position of the bolt 68 with respect to the long hole 67. In the present embodiment, the mounting portion 61 has a plate shape, and in the installed state, the flat plate portion 65 of the mounting portion 62 is placed on the mounting portion 61 from the back side and the lower side of the mounting portion 61 in the depth direction. It extends downward so as to be orthogonal. The placement portion 61 and the flat plate portion 65 have a substantially L-shape when viewed from the side.

  The jack device 70 includes a main body 71 and a piston 72. The main body 71 is mounted on the mounting surface 63 in the installed state and includes a piston accommodating chamber. Further, at least a part of the piston 72 is housed in the piston housing chamber and moves forward and backward with respect to the piston housing chamber. The jack device 70 can be configured by, for example, a commercially available hydraulic jack, but may be configured by using an electric cylinder. In the present embodiment, the jack device 70 is constituted by a hydraulic jack, and the piston 72 protrudes upward in the vertical direction by moving the lever 73 provided in the main body 71 downward in the installed state. In addition, it is preferable to have a fixing portion that fixes the main body 71 to the placement portion 61 because the jack device 70 does not move relative to the placement portion 61 during the operation. The fixing part can be easily realized by a screw hole provided in the mounting part (base part) of the main body, a screw hole provided in the mounting part of the jack stand, a bolt, and a nut. In addition, fixing two or more places of the jack device mounting portion (base portion) to the jack table mounting portion ensures that the jack device rotates relative to the jack table during operation of the trolley wire pulling device. This is preferable because it can be prevented.

  The connecting member 80 connects the piston 72 and the lower end of the trolley wire 4. The connecting member 80 has a piston fixing part 81 and a trolley wire fixing part 82. The piston fixing portion 81 is fixed to the tip end portion of the piston 72, and the trolley wire fixing portion 82 is fixed to the lower end portion of the trolley wire 4.

  FIG. 4 is a perspective view when the connecting member 80 is viewed obliquely from above. As shown in FIG. 4, the connecting member 80 is a cylindrical member, and is composed of, for example, a metal pipe or a vinyl chloride pipe. The connecting member 80 includes a first large-diameter cylindrical inner surface portion 85, a small-diameter cylindrical inner surface portion 86, and a second large-diameter cylindrical inner peripheral surface portion (not shown). The first large-diameter cylindrical inner surface portion 85 is configured at the end portion of the connecting member 80 on the trolley wire 4 side, and the second large-diameter cylindrical inner peripheral surface portion is configured at the end portion of the connecting member 80 on the piston 72 side. The first large-diameter cylindrical inner surface portion 85 preferably has an inner diameter that is equal to or larger than the diameter of the circumscribed circle of the cross-sectional shape of the trolley wire 4 and has an inner diameter that substantially matches the diameter of the circumscribed circle. Further, it is preferable that the inner peripheral surface portion of the second large-diameter cylinder has an inner diameter that is equal to or larger than the diameter of the circumscribed circle of the cross section of the piston 72 and has an inner diameter that substantially matches the diameter of the circumscribed circle.

  The small-diameter cylindrical inner surface portion 86 is located between the first large-diameter cylindrical inner surface portion 85 and the second large-diameter cylindrical inner peripheral surface portion in the axial direction of the connecting member 80. The small-diameter cylindrical inner surface portion 86 is connected to the first large-diameter cylindrical inner surface portion 85 via a step portion 87 extending in the radial direction, and has a second large diameter via a step portion (not shown) extending in the radial direction. It continues to the cylindrical inner peripheral surface. The first large-diameter cylindrical inner surface portion 85, the small-diameter cylindrical inner surface portion 86, and the second large-diameter cylindrical inner peripheral surface portion are preferably all located on substantially the same straight line. The lower end portion of the trolley wire 4 is pushed into the first large-diameter cylindrical inner surface portion 85 until the lower end surface of the trolley wire 4 contacts the step portion 87, so that the lower end portion of the trolley wire 4 is connected to the connecting member 80. Fix it. Further, the piston 72 is pushed into the inner peripheral surface portion of the second large-diameter cylinder until the tip surface of the piston 72 comes into contact with the stepped portion, thereby fixing the tip end side of the piston 72 to the connecting member 80. With these fixings, the piston 72 and the lower end of the trolley wire 4 can be connected by the connecting member 80, and the connecting member 80 can be reliably fixed to the piston 72 and the trolley bar 12 with a simple structure.

  The first large-diameter cylindrical inner surface portion 85 and the step portion 87 define a lower end accommodating chamber 88 that accommodates the lower end portion of the trolley wire 4, and the second large-diameter cylindrical inner peripheral surface portion and the step portion connected thereto are And defining a tip portion receiving chamber for receiving the tip portion of the piston. In the present embodiment, the connecting member 80 is a cylindrical member, but the connecting member may be a shaft member having no through hole. And the recessed part by which the depth direction corresponds to an axial direction may be provided in the both ends of the shaft member, the recessed part by the side of an upper end part may be made into a lower end part accommodating chamber, and the recessed part by the side of a lower end part may be made into a front-end | tip part accommodating chamber.

  FIG. 5 is a schematic diagram showing the trolley wire 4 in which a gap 24 is generated due to a shift of one or more trolley bars, and FIG. 6 is for explaining a trolley wire installation position adjusting method according to an embodiment of the present invention. FIG. Referring to FIG. 5, for example, one or more trolley bars 12 (FIG. 9) are caused by a decrease or disappearance of the support function of trolley bar 12a of anchor pin 15b due to deterioration of anchor pin 15b (see FIG. 10) of anchor clamp 15. (See FIG. 4), and the gap 24 may be generated due to the deviation. The gap 24 has a length of about 5 cm, for example.

  When such a gap 24 occurs, for example, the installation position of each trolley bar 12 is readjusted by the following procedure. Specifically, first, as shown in FIG. 6 (a), personnel are arranged at each place where work is performed. The personnel includes, for example, a worker who operates the jack device 70 of the trolley wire pulling device 50 connected to the lower end portion of the trolley wire 4, a worker disposed on the cage 5, and an elevator basket 95 adjacent to the elevator 1. It includes a worker (not shown) who manually operates the elevator 1 by a worker arranged above and a maintenance unit or the like.

  Next, a holding release step is performed. As shown in FIG. 6B, in this holding release step, the holding force of the hanger clamp 18 or the anchor clamp 15 holding each trolley bar 12 is weakened for all the trolley bars 12 up to the gap 24, or Disappear. In the example illustrated in FIG. 6, the trolley bar 12 is displaced due to deterioration of the specific anchor clamp 15. In this example, the holding force of the anchor clamp 15 is also weakened or lost.

  After the holding release step, a pulling up step is performed. In this pulling-up step, as shown in FIG. 6 (c), by extending the piston 72 of the trolley wire pulling device 50, an upper force is applied to the lower end of the lowermost trolley bar, Pull up all trolley bars 12 upward. This pulling is performed until the gap 24 disappears. The fact that the gap 24 has disappeared may be communicated to a worker in the vicinity of the trolley wire pulling device 50 from a worker placed on the cage 5 or 95 using a mobile phone or the like.

  When the gap 24 disappears, the lifting operation of the trolley bar is completed. After the pulling-up step, a re-holding step is performed. In this re-holding step, each trolley bar 12 included in all the trolley bars 12 is held by the hanger clamp 18 or the anchor clamp 15 at a predetermined position. When the re-holding step is completed, the trolley wire pulling device 50 is removed from the trolley bar, and the operation is completed.

  In addition, the expansion part (refer FIG. 13) which secures the prescription | regulation clearance (refer FIG. 13) 35 for absorbing the expansion / contraction of the trolley wire 4 by the change of environmental temperature by the height which the clearance gap 24 has generate | occur | produced in the trolley wire 4. FIG. 30 is present. In this case, the inclusion 89 having the same length (height) A as the defined gap 35 shown in the side view in FIG. It is preferable to perform the inclusion insertion step of inserting into the gap because the specified gap 35 can be secured.

  Further, in this description, the pulling step is performed using the trolley wire pulling device 50 described in FIGS. 3 and 4, but the pulling step is not executed using the trolley wire pulling device of the present invention. May be. More specifically, for example, a jack placement portion may be provided below the lower end portion of the trolley wire of the elevator 1, and the lifting step is performed using a commercially available hydraulic jack placed on the upper surface of the jack placement portion. May be executed. Also, the pulling step is performed without using a connecting member and binding the tip of the piston of the commercially available jack device and the lower end of the trolley wire with a binding member such as gum tape, curing tape, or OPP tape. Also good.

  According to the above embodiment, the piston 72 of the jack device 70 and the lower end of the trolley wire 4 can be connected by the connecting member 80 in a state where the trolley wire pulling device 50 is attached to the stationary portion 64 of the elevator. In this state, the holding force of the hanger clamps 18 or the anchor clamps 15 holding the trolley bars 12 with respect to all the trolley bars 12 up to the gap 24 generated by the displacement of one or more trolley bars 12. The one or more trolley bars 12 can be lifted simply by moving the piston 72 upward while weakening or disappearing. Accordingly, the one or more trolley bars 12 are pulled up by the jack device 70 until the height of the uppermost trolley bar 12 in which the slippage has occurred becomes the appropriate installation height, whereby a plurality of trolley bars 12 are pulled up. Can be raised to an appropriate height at the same time. Therefore, the labor and time for adjusting the installation position of the trolley bar 12 to an appropriate position can be greatly reduced.

  Further, the mounting height of the flat plate portion 65 can be freely adjusted at the insertion position of the fastening means 66 with respect to the long hole 67. Therefore, the installation height position of the jack device 70 is the position where the piston 72 is extended most, the gap 24 is eliminated, and the height of the uppermost trolley bar where the slippage has dropped is set to the appropriate installation height position. It can be adjusted easily. Therefore, the adjustment of the pulling length can be easily performed.

  Further, the trolley wire pulling device 50 substantially matches the height dimension of the specified gap 35 in the expansion portion 30 that secures the specified gap for absorbing the expansion and contraction of the trolley bar 12 due to the change in the environmental temperature in the trolley wire 4. There may be further included an inclusion 89 having a length that intervenes in the defined gap 35. For example, the inclusion 89 is preferably formed of a solid member having a cross section having the same size and shape as the trolley bar 12 and having the same height as the specified gap 35. You may have a cross section smaller than a cross section or a cross section larger than the cross section of the trolley bar 12. The inclusions 89 are preferably made of the same material as that of the trolley bar 12, but may be made of any material that is not easily deformed.

  According to this configuration, the pulling operation can be executed in a state where the inclusion 89 is interposed in the specified gap 35 of the expansion portion 30. Therefore, when the slip of the trolley wire 4 occurs above the at least one expansion unit 30, the trolley wire pulling operation can be performed efficiently.

  The present invention is not limited to the above-described embodiment and its modifications, and various improvements and modifications can be made within the matters described in the claims of the present application and their equivalent ranges.

  For example, in the above embodiment, the case where the mounting surface 63 of the jack stand 60 is a flat surface has been described. However, the mounting surface of the jack stand may be a downwardly convex curved surface or the like, and the lower surface of the jack device may be a curved surface or the like corresponding to the mounting surface.

  Moreover, the case where the jack stand 60 was fixed to the stationary part of the elevator 1 using the long hole 67 was demonstrated. However, the jack base may have a screw hole that is not a long hole, and the jack base may be fixed to the stationary part of the elevator using the screw hole. Or a jack stand may have a magnet and it may be fixed to the stationary part of an elevator using the magnet.

  Moreover, the case where the jack stand 60 has a substantially L-shaped portion in a side view has been described. However, the jack stand may have any structure having a mounting portion including a mounting surface and a mounting portion attached to the stationary portion. For example, the jack base does not have a substantially L-shaped portion in a side view. Good. Moreover, the jack stand may have a long hole extending in the horizontal direction in the installed state. Further, when the lifting work is performed with the inclusion 89 interposed, if the outer surface near the contact portion between the inclusion 89 and the trolley bar is reinforced with paper, cloth, vinyl tape, or a bundle, the intervention during the lifting work is performed. This is preferable because the separation of the object 89 can be prevented.

  DESCRIPTION OF SYMBOLS 1 Elevator, 4 trolley wire, 5 cages, 12,12a trolley bar, 24 clearance, 30 expansion part, 35 regulation gap, 50 trolley wire pulling device, 60 jack stand, 61 mounting part, 62 mounting part, 63 Placement surface, 64 stationary part, 65 flat plate part, 66 fastening means, 67 long hole, 70 jack device, 71 body, 72 piston, 80 connecting member, 81 piston fixing part, 82 trolley wire fixing part, 88 lower end part Containment chamber, 89 Inclusion, A Dimension of specified gap.

Claims (7)

A trolley wire pulling device comprising a plurality of trolley bars connected so as to extend substantially in a straight line and used to pull up at least one of the trolley bars in a trolley wire for supplying electric power to an elevator car. And
A mounting table having a mounting surface, and a jack stand that is connected to the mounting portion described above and has a mounting portion that is attached to the stationary portion of the elevator in an installed state in which the mounting surface faces upward.
A main body including a piston housing chamber, and a jack device having a piston that is at least partially housed in the piston housing chamber and moves forward and backward with respect to the piston housing chamber; ,
A connecting member that has a piston fixing portion fixed to a tip portion of the piston and a trolley wire fixing portion fixed to a lower end portion of the trolley wire, and connects the piston and a lower end portion of the trolley wire. When,
A trolley wire drawing device. In the trolley wire drawing apparatus according to claim 1,
The mounting surface is substantially flat,
In the installation state, the mounting surface is substantially perpendicular to the vertical direction,
A trolley wire pulling device, wherein the attachment portion includes a flat plate portion having a long hole connected to the mounting surface and extending in the vertical direction in the installed state, and a fastening means fastened to the long hole. In the trolley wire drawing apparatus according to claim 1 or 2,
The connecting member is a shaft member or a cylindrical member extending in one direction,
The connecting member has a distal end accommodating chamber for accommodating the distal end of the piston on one axial side, and a lower end for accommodating the lower end of the trolley wire on the other axial side. A trolley wire pulling device having a section accommodating chamber. In the trolley wire drawing apparatus according to any one of claims 1 to 3,
The trolley wire has a length that substantially matches the height of the specified gap in the expansion portion that secures a specified gap for absorbing expansion and contraction of the trolley bar due to a change in environmental temperature. A trolley wire drawing apparatus further comprising an inclusion to be interposed. A trolley wire installation position adjusting method comprising a plurality of trolley bars connected so as to extend substantially in a straight line, and adjusting an installation position of at least one of the trolley bars in a trolley wire for supplying power to an elevator car There,
A holding release step for weakening or eliminating the holding force of the hanger clamp or the anchor clamp holding each trolley bar with respect to all the trolley bars up to the gap generated by the slippage of one or more trolley bars. When,
After the holding release step, by pulling up all the trolley bars up to the gap by applying an upper force to the lower end of the lowermost trolley bar,
After the pulling-up step, a re-holding step of holding each trolley bar included in all the trolley bars at a predetermined position by the hanger clamp or anchor clamp;
Including trolley wire installation position adjustment method. In the trolley wire installation position adjustment method according to claim 5,
There is an expansion portion that secures a specified gap for absorbing expansion and contraction of the trolley wire due to a change in environmental temperature by the height at which the gap is generated in the trolley wire,
A trolley for performing an inclusion insertion step of inserting an inclusion having the same length as the prescribed gap into a place where the prescribed gap exists or a place where the prescribed gap should exist before performing the pulling-up step Line installation position adjustment method. In the trolley wire installation position adjustment method according to claim 5 or 6,
A trolley wire installation position adjusting method, wherein the pulling step is performed using the trolley wire pulling device according to any one of claims 1 to 4.

Images