JP2005328604A - Cable laying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable laying machine of a simple arrangement in which such workers as simply monitoring work conventionally are utilized effectively and installation and removal are facilitated. <P>SOLUTION: A gear is bonded to a drive shaft of a drive motor, a driven side gear is arranged while meshing with the gear, a hoisting drum is coupled with the driven side gear, and one end of a drawing rope is bonded to the hoisting drum. A gripper is bonded to the other end of the drawing rope, and a power supply control device for operating the drive motor intermittently is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cable drawing machine used in cable laying work for plant construction. .

A cable such as a power cable, a low-power cable, or an optical fiber used in an electrical facility such as a building or a factory is laid on a cable rack installed along the top of the building or along the wall. For this laying, as shown in FIG. 5, the cable drum 21 is arranged on the starting end side of the wire drawing path, and the cable wire drawing machine 30 for feeding out is predetermined along the cable drawing route (cable rack or the like). Laying will be done while arranging multiple units at each interval. In addition, an indexing means such as a winch is installed on the end side of the extended path when the operator does not index directly.
When carrying out the wire drawing work, first, the operator moves along the wire drawing route with the tip of the cable 20 or an index rope tied to the tip of the cable, and the cable is connected to each wire drawing machine. It loads sequentially. The loading here is an operation such as passing the cable between the rollers of the wire drawing machine in each wire drawing machine, and the operator loads the cable while sequentially moving to the end of the wire drawing path. A wiring cable 31 is provided to supply power to each wire drawing machine 30.

After loading the cables, the operator or winch performs the indexing and at the same time, power is supplied from the control panel to each wire drawing machine via the wiring cable, and each wire drawing machine is driven. The speed of the wire machine is controlled by a command from the control panel so that the cable feed speed is constant. Where the wire drawing work is performed, an operator is arranged for each wire drawing machine to monitor disconnection or entanglement of the cable from the wire drawing machine.
When the cable laying on the wire drawing path is completed, the operator removes the cable from each wire drawing machine, and the laying work is completed.
As a wire drawing machine used for such wire drawing work, those of Patent Literature 1 and Patent Literature 2 are known.
JP 2000-278834 A Japanese Patent Laid-Open No. 9-140019

In Patent Document 1, as a cable delivery device, a plurality (three) of electric rollers are arranged in a staggered manner on a gantry, and each electric roller is driven to rotate in a direction opposite to the adjacent roller. It is a thing. Further, in Patent Document 2, a driving endless belt driven by a driving means and a free endless belt are arranged to face each other, and a gripping body having a gripping portion is provided on the outer periphery of both endless belts. The wire drawing machine is configured so as to hold the cable.
However, in any of these wire drawing machines, not only the roller that feeds out the cable, the endless belt and the drive mechanism for driving it have a complicated device configuration, but also the wire drawing machine installed before work Preparatory work for laying the cable including the cable, removal work after the laying work, etc. are heavy labor and complicated.
Moreover, the operation | work which loads the cable before laying work to a wire drawing machine, and the cable removal work from the wire drawing machine after laying are needed. Therefore, in addition to complicated pre-work and post-work, these conventional devices have problems such as arranging workers for each wire drawing machine only for monitoring during wire drawing work.

  Accordingly, an object of the present invention is to provide a wire drawing machine that effectively utilizes a worker who has only been monitored during conventional work, and has a simple configuration and is easy to install and remove. It is in.

In the first aspect of the present invention, the cable is laid and fixed in a detachable manner in a path adjacent to the path, or the cable is extended along the laying path.
An index rope whose base end is fixed to the winding drum and can be wound and unwound with respect to the winding drum, a gripping tool provided at the distal end of the index rope for gripping the cable, and the indexing device driven by rotating the winding drum It consists of a drive motor that winds the rope, and after gripping the cable with the gripping tool with the index rope extended, the drive motor is driven to wind the index rope to obtain the cable tension and extend the cable. It is characterized by performing a line.

  A second aspect of the present invention is characterized by comprising control means for intermittently operating the drive motor.

  According to a third aspect of the present invention, a power transmission mechanism is provided between the drive motor and the winding drum.

  According to a fourth aspect of the present invention, the drive motor is a direct current motor, and the drive power source is a battery.

  According to a fifth aspect of the present invention, the gripping tool is formed in a glove shape, and the cable is gripped by a gripping force of an operator wearing the gripping tool.

  According to a sixth aspect of the present invention, the gripping tool is a cable clamp having any one of a wedge method, a lever method, and a combination method thereof, and a cable gripping force is generated by an indexing force of an index rope. .

  A seventh aspect of the present invention is characterized in that a hand switch is provided on the gripping tool, and control including start and stop of the drive motor can be performed by operating the hand switch.

  The eighth aspect of the present invention is characterized in that a transmission / reception means is provided in the gripping tool.

As described above, since the wire drawing machine according to the present invention has the same configuration as that of a normal winding machine, the configuration is simple and downsized, and a cable is attached to each wire drawing machine as in the past. Removal is unnecessary.
In addition, since the drive motor is a direct current motor and a battery is used as the drive power supply, no cable wiring for power supply to the wire drawing machine is required, so the incidental work before and after the wire drawing work is reduced. It is simplified.

FIG. 1 is a block diagram showing an embodiment of the present invention. A drive motor 1 is intermittently controlled by using, for example, a DC motor. Reference numeral 2 denotes one gear portion constituting a power transmission mechanism, which is connected to a drive motor and rotates together with the motor. Reference numeral 3 denotes the other driven gear portion constituting the power transmission mechanism, which is arranged in mesh with the gear portion 2, and a winding drum 4 is directly connected to the gear portion 3. It goes without saying that the power transmission mechanism may be an electromagnetic coupling in addition to the gear configuration.
One end of an index rope 5 is fixed to the winding drum 4. A gripping tool 6 for gripping the cable is connected to the other end of the index rope 5. The gripping tool 6 is configured to be able to grip a cable by using, for example, a glove clip type that can be worn by an operator with one hand. The gripping tool is provided with a hand switch as necessary, and can be operated by operating the hand switch when starting or stopping the work. And these 1-6 comprise the wire drawing machine 10 used as the structure similar to a normal winding machine.

  Reference numeral 11 denotes a power control device for controlling the drive motor 1, which has a control unit 12, a power switch 13 and a reverse switch 14. Reference numeral 15 denotes a battery unit. The control unit 12 intermittently outputs a forward rotation command and a reverse rotation command, and the switch 14 is turned on / off. That is, when the switch 14 is in the OFF state, the drive motor 1 is rotated in the forward direction, and the winding drum 4 is rotated in the direction in which the index rope 5 is wound up. Further, when the switch 14 is in the ON state, the drive motor 1 rotates in the reverse direction and is rotated in a direction to rewind the index rope 5 wound around the winding drum 4. The operation time for this timing is arbitrarily set. For example, the operation timing time for one operation is preset to about 1.2 to 1.5 sec, and the movement distance (winding length of the index rope 5 at that time) ) Is preset to about 0.8 to 1.0 m.

In this embodiment, the drive motor 1 is a direct current motor, and the battery unit 15 is also used as the power source. Of course, an AC motor may be used. In this case, the forward / reverse control of the wire drawing machine 10 is performed by switching the phase of the power line with a switch or switching the control of a switching element with an inverter. It is also possible to remove or inactivate the reverse switch 14 in the power supply control device 11 and perform only on / off control of the power supply switch 13. In this case, when the power switch 13 is turned off, an operation for extending the index rope 5 taken up by some means such as human power is required.
Further, as will be described later, at the time of wire drawing work, the operator grips the cable to such an extent that it does not slip through the gripping tool 6, but the gripping force may be substantially contributed only by the gripping force. However, instead of the gripping force of the operator, a well-known wedge method or a lever method, or a simple clamping mechanism in which both are combined may be employed. Examples of cable clamps that generate such gripping force include Japanese Utility Model Publication No. 36-4247, Japanese Utility Model Publication No. 51-126877, and Japanese Utility Model Publication No. 7-2639. No force is required and the operator need only assist in maintaining the cable index track.

Next, the cable drawing method will be described.
FIG. 2 shows an outline of the wire drawing work state, and FIG. 3 is a partial view thereof. In each figure, 21 is a cable drum around which the cable 20 is wound, 22 is an auxiliary roller, and is arranged at a required place such as a bent portion in order to secure a cable laying route. A plurality of wire drawing machines 10 are arranged for each arbitrary section in the wire drawing route, and an operator 23 puts the gripping tool 6 on his / her hand in the section where the wire drawing machine 10 is arranged. At that time, by rotating the drive motor 1 reversely or by reversely rotating the winding drum 4 by human power, the index rope 5 is set to a predetermined length determined by the winding length based on the intermittent operation (the wire length per timing). It is extended to the length, and after holding the gripping tool 6 in that state, the cable 5 is gripped and waits. Reference numeral 24 denotes a cable rack.

The wire drawing work is performed by the lead of the wire drawing machine 10, and the wire drawing is first performed from the first section. In the first section, when the index rope 5 is wound by the drive motor 1, the wire drawing machine 10 is wound, so that the worker 23-1 holds the cable so that the cable does not slip and pulls it together with the index rope 5 by about 1 m per timing. As a result, the cable 20 is moved in the direction of the arrow, so that the cable 20 is extended by about 1 m.
When the drive motor subsequently reverses, the operator 23-1 returns to the original predetermined position together with the gripper 6 by weakening the gripping force on the cable or releasing the gripping, and stands by while gripping the cable. At the next forward rotation of the motor, the cable 20 is pulled in the direction of the wire drawing machine together with the gripped cable, and thereafter the cable 20 is gradually drawn by repeating the same operation.

Next, the wire drawing work after the end of the cable 20 is extended to the second section, the third section, etc. will be described.
For example, the worker 23-1 located in the first section is a leader, and the other workers 23-2 are notified via voice or other wireless control system notification means when the wire drawing machine 10 is wound up. 23-3 ... After confirming the cable gripping of each worker, the hand switches are turned on all at once based on the instruction of the leader, and each wire drawing machine 10 is driven to start the wire drawing work.
It should be noted that transmission and reception of signals for synchronization timing between the wire drawing machines may be performed by radio waves using a cable rack or the like as a medium, and instructions by voice at intermittent timing etc. shall be given to the wire drawing machine itself. May be.

FIG. 4 shows another embodiment of the wire drawing machine. This embodiment is configured to facilitate the pull-out of the index rope 5. The difference from FIG. 1 is that the drive-side gear portion 2 moves to the 2 ′ position in the axial direction and the driven-side gear. The engagement with the part 3 is configured to be released. When the meshing between the gear portions 2 and 3 is released, the hoisting drum 4 is in a free state, and even if the indexing rope 5 is not unwound by reversely rotating the drive motor 1, it can be easily pulled from the hoisting drum 4 by manual pulling. The index rope 5 can be extended.
In addition, if an electromagnetic coupling is used as the power transmission mechanism and the excitation current of the electromagnetic coupling is turned off in synchronization with the drive motor being turned off, the space between the drive motor and the winding drum can be made free when the winding is completed. The index rope can be easily pulled by human power.
Further, even when a gear mechanism as shown in FIG. 1 is used as the power transmission mechanism, the driven gear portion and the winding drum are connected via an electromagnetic coupling, and the electromagnetic coupling is synchronized with the drive motor being turned off. If the exciting current is turned off, the space between the drive motor and the winding drum can be made free when the winding is completed.

The lineblock diagram of the wire drawing machine which shows the embodiment of the present invention. Explanatory drawing which shows the wire drawing work state by this invention. The elements on larger scale which show the wire drawing work state by this invention. The lineblock diagram of the wire drawing machine which shows the other Example of this invention. Explanatory drawing which shows the conventional wire drawing work state.

Explanation of symbols

1 ... Drive motor
2 ... Gear part
3. Driven side gear
4 ... Winding drum
5 ... Index rope
6 ... gripping tool
10 ... Wire drawing machine
20 ... Cable
21 ... Cable drum
22 ... Auxiliary roller
24. Cable rack

Claims (8)

In the cable laying path or in a position close to it, detachably fixed, and extending the cable along the laying path,
An index rope whose base end is fixed to the winding drum and can be wound and unwound with respect to the winding drum, a gripping tool provided at the distal end of the index rope for gripping the cable, and the indexing device driven by rotating the winding drum It consists of a drive motor that winds the rope, and after gripping the cable with the gripping tool with the index rope extended, the drive motor is driven to wind the index rope to obtain the cable tension and extend the cable. A cable drawing machine characterized by wire. The cable wire drawing machine according to claim 1, further comprising a control unit that intermittently operates the drive motor. The cable wire drawing machine according to claim 1 or 2, wherein a power transmission mechanism is provided between the drive motor and the winding drum. The cable wire drawing machine according to any one of claims 1 to 3, wherein the drive motor is a direct current motor, and the drive power source is a battery. The cable wire drawing machine according to any one of claims 1 to 4, wherein the gripping tool is formed in a glove shape and grips the cable by a gripping force of an operator wearing the gripping tool. The cable gripping force is generated by an indexing force of an index rope, and the gripping tool is a cable clamp formed of any one of a wedge system, a lever system, and a combination system thereof. The cable drawing machine described in 1. The cable wire drawing machine according to any one of claims 1 to 6, wherein a hand switch is provided on the gripping tool, and control is possible including start and stop of a drive motor by operation of the hand switch. . The cable wire drawing machine according to any one of claims 1 to 7, wherein a transmission / reception means is provided in the gripping tool.

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