JP4912126B2 - Cable lifting device - Google Patents

Description

  The present invention relates to a cable elevating device, and more particularly, a plurality of cable elevating devices arranged above a groove-shaped cable pit formed with an opening on a floor surface for accommodating a large number of cables. The present invention relates to a cable lifting device that can hold a cable upward.

  In general, a large number of cables are used in facilities such as electric power and communication, and these cables are stored in a cable storage section such as a cable pit. The cable pit is a groove-like facility with an opening on the floor, and a large number of cables are housed inside. When a new cable is laid, a large number of cables are already housed in the cable pit. They are placed on the stacked cables. And when performing work about a cable, such as removing a predetermined cable, the cable which performs work, such as removal, among many stacked cables is specified and pulled out.

  When performing such pull-out work, the cable to be removed may be on the lower side of the stacked cable. Conventionally, the cables that overlap the upper side of the cable to be removed are lifted and removed by many workers. Pull out the cable to be used. In addition, when a large-diameter cable or the number of cables to be lifted is large and cannot be lifted manually, a small elevator is carried into the facility and lifted.

  As a device for lifting the cable from the cable pit in this way, Patent Literature 1 describes a cable holder. This cable holder is composed of a frame body and a string member, and the frame body is disposed across both sides of the opening portion of the cable pit in which an upper portion is opened and a large number of cables are accommodated therein. The frame body includes both bases arranged along the floors on both sides of the cable duct, and U-shaped support frames connected to these bases. In addition, a plurality of eaves portions are provided on the inside of the vertical frame portion of the support frame, the string member includes a buckle for adjusting the length of the string, and triangular hooks are attached to both ends. The hooks on both ends of the string member are hooked on the hook part, and when the hooks are locked to the hook part through the lower side of a predetermined cable among the cables overlaid, the cables are lifted. Is to be held.

Japanese Patent Laid-Open No. 10-322831

  However, in the cable holder described above, in order to lift a predetermined cable, it is necessary to insert a string member under the cable, and the operator must lift the cable to be lifted. It is not easy because it lifts multiple heavy cables in the pit.

  Then, an object of this invention is to provide the cable raising / lowering apparatus which can lift a desired cable easily from many cables arrange | positioned by being piled up in a cable pit.

The present invention provides a leg portion disposed on both sides of a floor surface sandwiching an opening portion of a groove-like cable pit formed with an opening portion on the floor surface for storing a plurality of cables, and the leg portion A gantry having a support portion attached to the opening and disposed above the opening, a hanging member suspended from the supporting portion toward the cable pit, and a drooping direction of the drooping member from the lower end of the drooping member The cable is inserted in a vertical direction, and is positioned at two positions: a cable immersion position along the arrangement direction of the plurality of cables, and a cable placement position in which the cable can be placed in a direction substantially perpendicular to the cable extending direction. A mounting member provided in a changeable manner, and a hanging member driving device that is provided on the pedestal and moves the hanging member up and down. The mounting member is in a rod shape and is rotatable along an outer periphery thereof. Multiple cylinders It is equipped with a wood.

  According to the cable lifting apparatus according to the present invention, the mounting member provided at the lower portion of the hanging member is inserted into the cable pit, and the mounting member is in a direction substantially perpendicular to the cable extending direction and the cable is mounted. It is possible to easily lift a desired cable from a large number of cables placed in the cable pit by lifting and lowering the hanging member with a hanging member drive device at a position where the cable can be placed. There is an effect that the cable for performing the above can be easily exposed.

  Embodiments of a cable lifting apparatus according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing the overall structure of the cable lifting device. In this example, a cable group C composed of a plurality of cables is disposed in a groove-like cable pit 2 having an opening 3 on the floor 1 and sequentially superposed from the bottom. The cable lifting device 100 according to this example is disposed on the cable pit 2.

  The cable lifting device 100 of this example includes a gantry 110 disposed above the cable pit 2, and the gantry 110 includes leg portions 120 and 130 disposed with the cable pit 2 interposed therebetween, and the leg portions 120 and 130. And a support base 150 as a support portion disposed above the head. In this example, a hanging member 170 is disposed on the support base 150 so as to be movable up and down via a hanging member driving device 160. In addition, a placing member 180 is disposed at the lower end of the hanging member 170 so as to be rotatable about the hanging member 170. In this example, the mounting member 180 has a cable immersion position (a in FIG. 1) along the arrangement direction of the cable group C with the hanging member 170 as an axis, and a direction substantially perpendicular to the extending direction of the cable group C. It is provided so that the position can be changed at two positions of the cable placement position (b in FIG. 1) where C can be placed.

  In this example, the leg portion 120 of the gantry 110 includes two leg members 121 and 122 and a reinforcing member 123 that connects the leg members 121 and 122 in the middle. A caster device 190 with a stopper having a wheel member and a lock mechanism is arranged. Similarly, the leg portion 130 arranged on the opposite side across the cable pit 2 includes leg members 131 and 132, a reinforcing member 133, and a caster device 190, as with the leg portion 120.

  In this example, the two leg portions 120 and 130 are attached to the support base 150 so as to be openable and closable by a hinge member (not shown), and position adjusting members 141 and 142 forming the interval adjusting device 140 are disposed. The gap adjusting device 140 is formed with a plurality of holes in the position adjusting member 141, and the leg 120, which of the holes is engaged with the convex provided on the legs 120, 130. The interval 130 is adjusted and fixed by a lock device (not shown). In this example, the leg portions 120 and 130 are configured by welding or bolting, for example, a steel material having an L-shaped cross section.

  FIG. 2 is an enlarged front view showing the drooping member driving device 160 of the cable lifting device 100. The drooping member driving device 160 is disposed on the support base 150. That is, in this example, as shown in FIG. 2, the drooping member driving device 160 is a female screw member that is screwed into a drooping member insertion hole 151 provided in the support base 150 and a male screw portion 171 formed at the upper end of the drooping member 170. A nut 161 and a washer 162 are provided. According to this example, the drooping member 170 screwed into the nut 161 is driven in the vertical direction by rotating the nut 161 with a rotary tool such as a spanner. In addition, the nut 161 can be provided with a handle for rotation, and a manual booster mechanism using a chain block, a hydraulic drive mechanism using a hydraulic cylinder, an electric drive mechanism using an electric motor, or the like can be used. .

  FIG. 3 is an enlarged front view showing an attachment structure between the hanging member 170 and the mounting member 180 of the cable lifting apparatus 100. As described above, the mounting member 180 is rotatably attached to the hanging member 170. In this example, the drooping member 170 and the mounting member 180 have a structure as shown in FIG. That is, a male screw portion 178 is formed at the lower portion of the drooping member 170, and a locking plate 173 is fixed above it by welding 179 or the like. The mounting member 180 has a drooping member insertion hole 183. The male screw portion 178 of the mounting member 180 is inserted into the drooping member insertion hole 183, and the two nuts 174 and 175 and the washer 176 are used. The hanging member 170 and the mounting member 180 are fixed while the mounting member 180 is rotatable. The hanging member 170 and the mounting member 180 are preferably configured to be exchangeable. For example, the total length of the mounting member 180 is changed according to the cable group C2 to be lifted. When the amount of the cable group C2 to be lifted is small, a mounting member 180 with a reduced size (for example, 20 cm) can be attached.

  FIGS. 4A and 4B are diagrams showing an end portion of the mounting member 180 of the cable lifting device, in which FIG. 4A is an enlarged perspective view, and FIG. 4B is a cross-sectional view corresponding to line AA in FIG. As shown in FIG. 4, the mounting member 180 covers a cylindrical shaft member 181 with a sleeve 182 as a rotating member in which a large number of cylindrical members 183 are fixed. The sleeve 182 is covered with a washer 184 and a screw 185. It is attached to 181 to be rotatable. As a result, the resistance between the cable and the mounting member 180 can be reduced, and the mounting member 180 can be easily inserted into the cable group C and can be easily rotated within the cable group C. The structure of the mounting member 180 is not limited to the above example, and a structure in which the cylindrical member 183 is provided on the shaft member 181 so as to be directly rotatable can be changed as appropriate, and the structure in which the length of the mounting member 180 is variable.

  5 to 7 are cross-sectional schematic views showing the usage state of the cable lifting apparatus 100. FIG. Here, a procedure for holding and lifting a necessary cable group C2 among the cable groups C in the cable pit 2 using the cable lifting device 100 will be described.

  First, as shown in FIGS. 5 to 7, the distance between the legs 120 and 130 is fixed to be slightly larger than the distance between the cable pits 2 by using the distance adjusting device 140 of the cable lifting / lowering device 100, and the caster device 190. Is installed on the floor 1 on both sides of the opening 3 of the cable pit 2. Then, the caster device 190 is used to move to a predetermined location of the cable pit 2, the lock mechanism of the caster device 190 is operated, and the caster device 190 is fixed at the predetermined position.

  Next, as shown in FIG. 5, the nut 161 of the drooping member driving device 160 is rotated by a rotating tool, the drooping member 170 is moved downward, and the mounting group 180 is arranged in the cable pit 2. C is buried to a predetermined depth while scraping. At this time, the mounting member 180 is disposed in a direction in which the mounting member 180 can easily enter between the cables, with the cable immersing position (position a in FIG. 1) along the cable layout direction. In this example, since the sleeve 182 is disposed on the mounting member 180, the resistance between the cable and the mounting member 180 can be reduced, and the mounting member 180 can be easily immersed in the cable group C. Can be made.

  Next, as shown in FIG. 6, the mounting member 180 is in a direction substantially perpendicular to the cable extending direction from the cable insertion position (position a in FIG. 1) along the cable arrangement direction, and the cable can be placed thereon. It is rotated to the mounting position (position b in FIG. 1). The rotation of the mounting member 180 is manually performed by moving the cable to the mounting member 180. By this operation, the cable group C1 left in the cable pit 2 and the cable group C2 placed on the placement member 180 are separated, and the placement member 180 is disposed therebetween. The hanging member 170 can be lifted and lowered manually as described above, or an electric lift using a motor can be used. In such a case, the lift is variable in the lifting speed. It is desirable to do.

  Then, as shown in FIG. 7, the nut 161 of the drooping member driving device 160 is rotated in the reverse direction by the rotary tool to raise the drooping member 170. By this operation, in the cable pit 2, the cable group C2 placed on the placement member 180 is lifted by opening a space above the cable group C1, and the cable to be processed is exposed.

  Then, after the necessary processing is completed, an operation reverse to the above operation is performed, the mounting member 180 is extracted from the cable group C, and the cable lifting device 100 is removed from the cable pit 2. This completes a series of operations.

  As described above, according to the cable lifting apparatus according to the present example, a cable that can easily lift a desired cable from a large number of cables arranged in a cable pit and performs processing such as removal. Can be easily exposed. At this time, a drooping member driving device having a screw mechanism can be used and the cable can be easily moved up and down, and the sleeve 182 is disposed on the mounting member inserted into the cable group. The placement member can be inserted and rotated in a state in which the resistance between the placement member and the cable is reduced.

1 is a perspective view showing an overall structure of a cable lifting apparatus as an embodiment of the present invention. It is an enlarged front view which shows the drooping member drive device of a cable raising / lowering apparatus. It is an enlarged front view which shows the attachment structure between the drooping member of a cable raising / lowering apparatus, and a mounting member. It is a figure which shows the edge part of the mounting member of a cable raising / lowering apparatus, (a) is an expansion perspective view, (b) is sectional drawing equivalent to the AA line in (a). It is the cross-sectional schematic which shows the use condition of a cable raising / lowering apparatus. It is the cross-sectional schematic which shows the use condition of a cable raising / lowering apparatus. It is the cross-sectional schematic which shows the use condition of a cable raising / lowering apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor 2 Cable pit 3 Opening part 110 Base 120 Leg part 130 Leg part 140 Space | interval adjustment apparatus 150 Support stand (support part)
160 Drooping member driving device 170 Drooping member 190 Caster device (wheel member)
C Cable group C1 Cable group C2 Cable group

Claims (7)

Legs arranged on both sides of the floor surface sandwiching the opening of the groove-shaped cable pit formed with an opening on the floor to store a plurality of cables, and attached to the leg A gantry having a support portion disposed above the opening;
A hanging member hanging from the support portion toward the cable pit;
The cable is attached from the lower end of the drooping member in a direction perpendicular to the drooping direction of the drooping member, and is a cable penetration position along the arrangement direction of the plurality of cables and a direction substantially perpendicular to the cable extending direction. A mounting member provided so that the position of the cable can be changed at two positions with the cable mounting position.
A drooping member driving device that is provided on the gantry and moves the drooping member up and down;
The above-mentioned mounting member is rod-shaped, and includes a plurality of cylindrical members that are rotatable along the outer periphery thereof .   The cable elevating device according to claim 1, wherein a wheel member for movably supporting the gantry is disposed at a lower end portion of the leg portion. The cable lifting device according to claim 2 , wherein the frame includes a lock mechanism that prohibits movement of the frame.   The cable lifting apparatus according to any one of claims 1 to 3, wherein the gantry includes an interval changing device that changes an interval dimension between the leg portions facing each other across a cable pit. The cable elevating device according to claim 1, wherein the drooping member driving device is disposed on the support portion .   The cable elevating device according to claim 5, wherein the drooping member driving device includes at least one of a manual booster mechanism, a hydraulic driving mechanism, and an electric driving mechanism.   The cable elevating device according to claim 6, wherein the drooping member driving device includes a male screw portion formed in the drooping member and a female screw portion into which the male screw portion arranged in the support portion is screwed.

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