JPH06153355A - Electric cable feeding unit - Google Patents

Abstract

PURPOSE:To provide an electric cable feeding unit for feeding any type of electric cable smoothly without bending or scratching the cable. CONSTITUTION:Helical gears G1, G2 having different tooth surfaces are fit to the lower parts of a pair of pivot shafts 3, 3 pivoted to a base l through bearings 2, 2 and other helical gears G2, G2 mating individually with the helical gears G1, G1 are fit to a rotary shaft 4 pivoted laterally to the base 1. The rotary shaft 4 is rotatable through a slip clutch 5 with the rotating force of a motor M. Rollers 7, 7 made of a substantially spherical hollow elastic member are fixed through clamps 8, 9 to tubular bodies 6, 6 fit to the upper parts of a pair of pivot shafts 3, 3 by means of stoppers (n), e.g. screws, and cable guide members are pivoted laterally to the upper surface of the base 1 on the opposite sides of the feed rollers 7, 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cable feeding device for continuously feeding various electric cables when laying signal cables, optical fiber cables and electric power cables for various communications.

[0002]

2. Description of the Related Art When laying a signal cable or a power cable, various cables are pulled out from a cable drum and pulled by a winch on the opposite side. In this case, if an attempt is made to lay a cable over a long section, the traction force becomes excessive, and it becomes impossible to lay the cable within the allowable tension of the cable.

Therefore, a cable feeding device for feeding the cable while applying tension to the cable is arranged in the middle of the cable laying line to perform the laying work.

However, among the various cables, there are some that are heavy like a power cable (for example, about 11 kilograms for a 1 m cable having a cross-sectional area of 325 mm 2) and are hard and difficult to handle. It was difficult to do it, and the work was done relying on human power. For this reason, the cable laying requires a lot of operation and a large labor cost.

Therefore, in reality, a method of sending out a cable by a large-scale mechanical device is being implemented.

[0006]

In the above-mentioned conventional example, the cable cannot be sent out unless a large mechanical device is used, so that there is a problem that installation is difficult depending on the cable laying work site. Further, in the conventional device, the cable feeding mechanism does not work smoothly depending on the shape of the cable, the cross-sectional diameter, and the like, and there is a problem in that proper cable laying cannot be performed.

[0007] Further, since the amount of electric power equipment construction is increasing year by year and the quality is becoming more sophisticated, the above problems are a great obstacle to the establishment of young people in the workplace and the expansion of employment. ing.

The object of the present invention is to solve the above-mentioned problems, and it is a device having a simple structure, and can be used regardless of the type of the cable, smoothly and without causing the cable to be bent or scratched. An object is to provide an electric cable feeding device capable of feeding.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to construct a cable feeding device for feeding a cable between a pair of elastic rollers in the lengthwise direction of the cable by the rotating force of the elastic rollers. In this case, helical gears with different tooth flank directions are fitted to the lower parts of a pair of pivots pivotally supported by bearings on the base, and other helical gears that individually mesh with these helical gears are installed horizontally on the base. The rotation shaft supported by the rotation is supported by a rotary clutch so that the rotation shaft can be rotated by a rotational force of a motor, and the rotation of the rotation shaft of the rotation shaft of the rotation shaft is substantially spherical. The feeding rollers made of hollow elastic material are attached to the front and rear upper surfaces of the base on both sides of each feeding roller by attaching them with fasteners such as screws through a holding fixture. Le guide member can be achieved by setting pivot 支横.

[0010]

With the rotational force of the motor, it is possible to rotate the pivot shaft and the pair of feed rollers in the forward and reverse directions with predetermined torques through a known reduction gear set, a transmission member such as a chain, a slip clutch and a helical gear in order. .

When the cable start end is pushed between the rollers from the self-feeding rotation side, the feed roller is well adapted to the outer surface of a stranded cable with a large or small cable diameter or a diameter variation such as a twisted cable, and the delivery roller resists the internal pressure. Then, the cable can be sent out in the direction in which the guide member is connected regardless of the size of the diameter or the fluctuation of the diameter by rolling frictional force of the rolling depression against the cable.

Further, even if the cable sways vertically and horizontally during the feeding, the downward movement of the cable can be regulated by the cable guide member, and the upward movement and the lateral movement of the cable are caused by the concave concave surface of the feeding roller. Due to the cable disengagement prevention function or the cable downward movement restriction effect of the guide member that accompanies the progress of the subsidence of the cable due to self-gravity, the cable in the middle of being sent can be stably sent out without being unduly escaped from between the sending rollers.

In order to feed a long cable over a long distance by laying a plurality of the feeding devices in series in series, the slip clutch is adjusted by adjusting its slip adjusting nut so that the farther the cable drum is, the less the slip is, and the larger the torque is. If it is pulled by, the slack in the cable can be reduced.

The relationship between the internal pressure of the delivery rollers 7, 7 and the cable pulling force is substantially proportional to the internal pressure and the cable pulling force when the internal pressure is 1 atm or more and 1.8 atm or less. For example, when the internal pressure is 1 atm, the pulling force is approximately If the pressure is 100 kilograms, a traction force of about 260 kilograms will be obtained at 1.8 atmospheric pressure, which will act as an auxiliary slip clutch.

Next, in order to bend the cable at a right angle and send it, by setting the slip conditions of the two slip clutches closest to the curved portion to the same degree, the shape of the extra curved portion of the cable is formed. It is possible to stably bend the cable without changing the cable.

Further, in order to make the cable escape from between the sending rollers as at the end of sending the cable, the cable is pulled up against the pinching elastic force of each roller while the sending rollers 7, 7 are rotating or stopped. You can get out of it.

[0017]

EXAMPLES Examples will be described with reference to the drawings. First, as shown in FIGS. 1 and 2, the basic configuration of the present invention constitutes a cable feeding device for feeding an electric cable between a pair of elastic rollers in the longitudinal direction of the cable by the rotational force of the elastic rollers. As shown in FIGS. 1 and 2, a well-known well-known method in which two tough plates, such as substantially square metal plates, are held in parallel by a large number of columns in parallel on a base 1 with upper and lower bearings 2,2 Helical gears G1 and G1 having different tooth flank directions are fitted to the lower parts of a pair of pivot shafts 3 and 3 each having a self-closing valve V and a vent hole 3a in the upper part through a key pin K as shown in FIGS. .

Then, other helical gears G2, G1 which mesh with the respective helical gears G1, G1 individually as shown in FIGS.
G2 is provided by being fitted to a rotary shaft 4 which is laterally pivotally supported on the bearing 2a of the base 1 through a key pin K as shown in FIG.

The rotary shaft 4 is driven by a driving gear 5a, an adjusting nut 5b, a pressing spring 5c, a friction plate 5d, and a driven cylinder 5.
2 is constituted by a transmission member 11 such as a chain via a well-known slip clutch 5 of FIG.

Then, a delivery is made of a hollow elastic material such as a rubber ball having a substantially spherical surface on a mounting cylinder body 6,6 which is firmly fitted by an adhesive or the like on the upper portion of the pair of pivot shafts 3,3 as shown in FIG. The rollers 7 and 7 are attached via the holding fixtures 8 and 9 with a fastener n such as a screw as shown in FIGS. 1 and 2, and air is supplied from the valve V into the respective delivery rollers 7 and 7 as shown in FIGS. It is filled with about 2 atm, and cable guide members 10, 10 such as elongated rollers and sliding members are pivotally supported laterally on both sides of the base 1 via pivots 10a as shown in FIGS. 5 and 6. A cable feeding device according to the present invention is constructed.

In FIGS. 2 and 4, the reference numeral B indicates all bearings such as ball bearings, the reference numeral K indicates all key pins, and the reference numerals V in FIGS. 1, 2 and 7 indicate V. A known self-closing valve, in FIG. 4, 5a is a flat ring-shaped driving spur gear, 5b is a slip adjusting nut, 5c is a clutch spring such as a spring washer, and 5d, 5
d is a friction clutch plate provided with the driving spur gear 5a sandwiched therebetween, 5
Reference numeral e is a driven cylinder, 3a is a vent hole in FIGS. 1 and 2, 11 is a transmission member such as a chain, and 1b is a fixed rope binding ring member which also serves as a hanging hand.

The configuration of the present invention is as described above,
The operation will be described below. First, after fixing the base 1 to the ground with a rope or the like, which is fastened to the pile via the ring member 1b, and energizing the motor M, the rotational force of the motor M causes transmission of a well-known reduction gear set (not shown) and a chain or the like. Element
The drive gear disc 5a of the slip clutch 5 shown in FIGS. 1 and 4 can be rotated via 11 and 11.

The slip adjusting nut 5 is rotated by the rotating force of the disk 5a.
By the elastic force of the clutch spring 5c by b, the driven plate 5e can be slid and rotated with a slightly strong predetermined torque via the friction plate 5d, and this rotational force causes the rotation shaft 4 to rotate as shown in each of FIGS. 1 to 4. Helical gears G2 and G1 are sequentially inserted to pivot
1, 3 and 3 and the pair of feed rollers 7 and 7 in the forward and reverse directions at a predetermined torque of about 10 to 20 RPM.
And rotate as shown in FIG.

Then, from the self-feeding rotation side, each roller is
When the cable start is pushed between 7,7, it fits well to the outer surface of a stranded cable with a large or small cable diameter or a diameter variation such as a twisted cable, and the delivery rollers 7,7 resist the internal pressure as shown in Fig. 7. The concave portion 7a, 7a is rolled into the concave portion 7a, and the cable C is pressed by the frictional force against the cable Ca.
5a and 8b can be sent out in the direction in which the cable guide members 10, 10 are connected regardless of the size of the diameter or the diameter variation.

When the cable diameter is extremely large, the feeding rollers 7 and 7 are made to have a slightly elongated shape and the roller intervals are widened.

Further, even if the cable Ca sways in the vertical and horizontal directions during the delivery, the downward movement of the cable can be restricted by the cable guide members 10 and 10 as shown in FIG.
The upward movement and the lateral movement of the cable Ca prevent the cable from coming off due to the concave portions 7a and 7a of the feeding rollers 7 and 7 as shown in FIG. The cable Ca in the midst of being sent out by the cable downward movement limiting action of 10 (see FIG. 2) does not inadvertently escape from between the delivery rollers 7 and 7, and can be stably delivered.

In order to feed a long cable Ca over a long distance by placing a plurality of the feeding devices A in series as shown in FIG. 8, the slip clutch 5 is placed far from the cable drum by adjusting the slip adjusting nut 5b. If the amount of slippage is set to a small value and the cable is pulled with a large torque, the slack in the middle of the cable can be reduced.

Next, in order to bend the cable Ca in a right angle direction and send it, the slip conditions of the two slip clutches 5 and 5 closest to the curved portion are set to the same degree, so that the cable Ca in FIG. It is possible to stably feed out the curved portion of the cable without changing the shape of the extra curved portion Cb.

To eject the cable Ca from between the feeding rollers 7 and 7 as when the feeding of the cable Ca is completed, if the cable Ca has been fed to its end, it can be ejected as it is. The cable Ca can be removed by pulling out the cable Ca against the pinching elasticity of the rollers 7 and 7 while the cable Ca is being fed out or while the rollers 7 and 7 are rotating.

[0030]

Since the present invention is constructed as described above, it has the following effects. The feed rollers 7,7 made of hollow elastic material are attached to the upper part of the pair of pivots 3,3 pivotally supported by the bearings 2,2 on the base 1, and the lower part of the pivot has different tooth flank directions. Helical gears G1, G
1 is fitted and other helical gears G2 and G2 which mesh with the respective helical gears G1 and G1 are fitted to the rotary shaft 4 which is pivotally supported laterally on the base 1, and the rotary shaft 4 is provided. Since the sending rollers 7, 7 can be rotated by the rotational force of the motor M by the slip clutch 5 and the electric cable is sent out, the driving members such as the motor M and the reduction gear set are moved up and down on the base 1. As shown in Fig. 2, it can be placed between the plates so that it can be flattened as a whole, and the structure of the power transmission system including the bearings can be simplified and the transmission loss can be significantly reduced. Since the roller is dented even if it is sandwiched, there is a first effect that it is safe.

Further, according to the present invention, the rotational force of the motor M is used to sequentially connect the reduction gear set, the transmission member 11 such as a chain, the slip clutch 5, and the helical gears G2 and G1 through the pivot shaft.
Since a long cable can be fed by rotating the 3, 3 and the pair of feeding rollers 7, 7 in the forward and reverse directions with predetermined torques respectively, a plurality of the feeding devices A of the present invention can be placed in series in parallel to extend the long cable. When sending the cable Ca over a long distance, if the slip clutch 5 is adjusted farther from the cable drum by adjusting the slip adjusting nut 5b, the slip is set to be smaller and pulled with a large torque, so that the slack in the middle of the cable can be reduced. Also, there is a second effect that the cable Ca can be smoothly fed because it is not bent or scratched.

When bending the cable Ca in the right angle direction and sending it, the bending conditions of the cable Ca are set by setting the slip conditions of the two slip clutches 5 and 5 closest to the bending portion to the same degree. There is also a third effect that it is possible to stably feed the curved cable without changing the shape of the extra length portion Cb.

Further, according to the present invention, when the cable starting end is pushed between the feeding rollers 7 and 7 from the self-feeding rotation side, the outer surface of a twisted wire cable having a large or small cable diameter or a diameter variation such as a twisted cable is well adapted. The feeding rollers 7, 7 are concaved against the internal pressure, and this concave
There is a fourth effect that the cable Ca can be fed in the direction in which the cable guide members 10, 10 are connected by the rolling and pressing frictional force of the cables 7a, 7a against the cable Ca, regardless of the size of the diameter or the diameter variation.

Further, even if the cable Ca sways in the vertical and horizontal directions during the feeding, the downward movement of the cable can be restricted by the cable guide members 10 and 10, and the cable C
The upward movement and the lateral movement of "a" are the function of preventing the cable from coming off by the concave surface 7a, 7a of the feeding roller 7,7 or the downward movement of the cable guide member 10 accompanied by the progress of the cable Ca's self gravity. The cable Ca that is being sent out does not inadvertently escape from between the sending rollers 7 and 7 and can be sent stably.
There is also the effect of.

Further, particularly in the present invention, the roller for feeding out the cable Ca is used at the end of feeding out the cable Ca.
The cable Ca can be ejected from between 7 and 7, if the cable Ca has been fed to its end, it can be ejected as it is, but when removing it in the middle of the cable, the cable Ca is fed out while the feeding rollers 7 and 7 are being rotated. Alternatively, there is a sixth effect that the cable Ca is remarkably easy because the cable Ca can be removed by pulling up the cable Ca against the elastic force of the rollers 7 and 7 in the stopped state.

[Brief description of drawings]

FIG. 1 is a cutaway elevation view showing an example of an electric cable feeding device according to the present invention.

FIG. 2 is a cut side view showing an example of an electric cable feeding device according to the present invention.

FIG. 3 is an enlarged perspective view of a helical gear part showing an example of an electric cable feeding device according to the present invention.

FIG. 4 is a sectional view of an essential part showing an example of an electric cable feeding device according to the present invention.

FIG. 5 is a plan view showing an example of an electric cable feeding device according to the present invention.

FIG. 6 is a perspective view showing an example of an electric cable feeding device according to the present invention.

FIG. 7 is a cutaway elevation view showing an example of use of the electric cable feeding device according to the present invention.

FIG. 8 is a schematic plan view showing an example of use of the electric cable feeding device according to the present invention.

[Explanation of symbols]

 1 Base 2 Bearing 3 Axis 4 Rotational axis 5 Sliding clutch 6 Mounting cylinder 7 Feeding roller 8,9 Holding fixture 10 Cable guide member G1, G2 Helical gear M Motor n Stopper such as screw

Claims (1)

[Claims] 1. A cable feeding device for feeding a cable between a pair of elastic rollers in a line length direction by a rotating force of the elastic rollers, wherein the cable is erected on a base 1 by bearings 2 and 2. Helical gears G1 and G1 having different tooth flanks are fitted to the lower parts of the pair of pivots 3 and 3, respectively, and other helical gears G2 and G2 individually meshed with these helical gears G1 and G1 are laterally mounted on the base 1. A mounting cylinder fitted and mounted on a pivot shaft 4 that is pivotally supported so that the rotary shaft 4 can be rotated by a rotational force of a motor M by a slip clutch 5 and that is fitted on the upper part of the pair of pivot shafts 3,3. Sending rollers 7,7 made of hollow elastic material with a nearly spherical body 6,6
Are attached by means of fasteners n such as screws through the holding fixtures 8 and 9, and cable guide members 10 and 10 are pivotally supported laterally on the front and rear upper surfaces of the base 1 on both sides of each of the feed rollers 7 and 7. An electric cable feeding device.