JPH07312811A - Electric-cable feed-out apparatus - Google Patents

Abstract

PURPOSE:To provide an electric-cable feed-out apparatus which can send out an electric cable smoothly irrespective of the kind of the electric cable and without causing bend, scratches flaw or the like to the cable. CONSTITUTION:Chain gears G are fitted and mounted respectively on lower parts of one pair of axles 3, 3 which are shaft-supported, erected and installed on a base stand 1 by means of bearings 2, 2. A transmission member 4 such as a roller chain or the like which turns the individual gears G, G mutually to the forward and reverse directions is hooked on the gears. The transmission member 4 is hooked on a motive gear which is turned by a turning effort of a large-diameter bevel gear G2 which is engaged with a bevel gear at the shaft (m) of a motor M. Then, feed-out rollers 7, 7 which form nearly spherical surfaces on mounting tube bodies 6, 6 fitted to, and mounted on, upper parts of the pair of axles 3, 3 and which are made of a hollow elastic material are attached and mounted by means of fixation utensils (n) such as screws or the like via sandwiching and holding fixtures 8, 9. In addition, cable guide members are shaft-supported and installed transversely on the front and rear surfaces of the base stand 1 on both sides of the individual feed-out 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 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 traction machine 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 regardless of the type of the cable, the cable can be smoothly bent without causing bending or scratching. It is an object of the present invention 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, chain gears are respectively fitted to the lower parts of a pair of pivots pivotally supported by bearings on the base, and a transmission member such as a roller chain for rotating these gears in forward and reverse directions is hung around each gear. , This transmission member is a bevel gear G1 of the rotation axis m of the motor.
It is made of a hollow elastic material which is provided around the driving gear 5 which is rotated by the rotating force of a large-diameter bevel gear G2 meshed with and which is attached to the upper part of the pair of pivot shafts and which has a substantially spherical surface. This can be achieved by attaching the feed-out rollers with a fastener such as a screw through a holding fixture, and pivotally supporting cable guide members on the front and rear upper surfaces of the base on both sides of each of the feed-out rollers.

[0010]

The rotating shaft of the motor and the pair of feed rollers can be rotated in the forward and reverse directions by a predetermined torque through a transmission member such as a roller chain by a rotational force of a driving gear that is decelerated from a motor through large and small bevel gears. At the same time, the driving gear is decelerated by the large bevel gear that meshes with the small bevel gear on the rotary shaft side of the motor, so it is not necessary to add a reducer on the motor side. Can be arranged orthogonally.

When the cable starting end is pushed between the rollers from the self-feeding rotation side, the feeding roller is adapted to the inner pressure of the twisted wire cable whose diameter varies, such as a large or small cable diameter or a twisted cable. The cable can be bent in the opposite direction, and the cable can be fed in the direction in which the guide member is connected regardless of the size of the diameter or the fluctuation of the diameter by the rolling and pressing frictional force of the groove on the cable.

Further, even if the cable swings up, down, left or right during the feeding, the downward movement of the cable can be regulated by the cable guide member, and the upward movement or the lateral movement of the cable can be controlled by the feeding roller's concave concave surface. The cable is prevented from slipping out due to the cable disengagement effect or the cable downward movement restriction effect of the guide member that accompanies the subsidence of the cable due to self-gravitational force. .

In order to feed a long cable over a long distance by placing a plurality of the feeding devices in series in series, a known slip clutch is interposed between the motor shaft and the driving gear, and the slip adjusting nut is adjusted. If you set the less slippage the farther from the cable drum and pull with a large torque,
The slack in the cable can be reduced.

The relationship between the internal pressure of the feed rollers 7 and 7 and the cable pulling force is approximately 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 If the pressure is about 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 and feed the cable in the right-angled direction, it is necessary to set the slippage of the two slip clutches closest to the bent portion and the slippage between the feed roller and the cable to the same degree. Thus, it is possible to stably send out the curved cable without changing the shape of the extra curved portion of 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 resisted against the pinching elastic force of each roller while the sending rollers 7, 7 are rotating or stopped. You can escape by pulling up.

[0017]

EXAMPLES Examples will be described with reference to the drawings. First, the basic configuration of the present invention is as shown in FIGS.
In constructing a cable feeding device for feeding an electric cable between a pair of elastic rollers in the wire length direction by the rotating force of the elastic roller, a substantially square metal plate is formed as shown in FIGS. A pair of pivot shafts 3 each having a well-known self-closing valve V and a ventilation hole 3a installed on the base 1 in which two tough plates such as Fit the chain gears G to the lower parts of 3 and 3, respectively. Then, as shown in FIG. 4, a transmission member 4 such as a roller chain for rotating these gears G, G in the forward and reverse directions is laid across the idler gear 4a so that the transmission member 4 is rotated about the rotation axis m of the motor M. A large bevel gear G2 meshing with a pair of small bevel gears G1 that rotate as shown in FIG.
It is provided by being passed over the rotating driving gear 5 as shown in FIG.

For the large and small bevel gears, a hypoid gear, a zero roll gear, a spiral bevel gear or the like as shown in FIG. 3 can be used in addition to the well-known mere bevel gear. The small bevel gear G1 of the bevel gear sets G1, G2
Is coaxially coupled to the rotary shaft m of the motor M as described above, and the large bevel gear G2 and the driving gear 5 are coaxially fitted to the pivot shaft 5a pivotally supported by the bearing 2 with the key pin K as shown in FIGS. is there.

The upper part of the pair of pivots 3,3 is shown in FIG.
As shown in the figure, the mounting cylinders 6,6 that are firmly attached by gluing etc. hold the delivery rollers 7,7 made of a hollow elastic material such as a hollow rubber ball forming a nearly spherical surface. 1 and 2 are attached with the stoppers n of FIG. 1 and air is filled from the valve V into the delivery rollers 7 and 7 at a pressure of about 1 or 2 at the front and rear of the base 1 on both sides thereof. Cable guide members such as long rollers and sliding members on the top surface 10,1
As shown in FIG. 5 and FIG. 6, 0 is laterally installed pivotally through a pivot 10a to form a cable feeding device according to the present invention.

In each of FIGS. 1, 2 and 4, the reference numeral 4b is the pivot of the idler gear 4a, and the reference numerals 2 and B are all bearings such as ball bearings and the reference numeral K. 1 and 2 and 7, V is a well-known self-closing valve, 3a is a ventilation hole, and 1b is a ring member for binding a fixed rope which also serves as a hanging member. Is. Further, how to hang the transmission member 4 (roller chain) between the left and right chain gears G and G and the driving gear 5 is shown in FIG.
As shown in FIG. 10, various hanging methods can be adopted.

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 connected to a pile via the ring member 1b, when the motor M is energized, the rotational force of the motor M causes a known reduction gear set and large and small bevel gear sets G1, The driving gear 5 rotates in the direction of the arrow in FIG. 4 via G2, and the chain gears G, G are rotated by the transmission member 41 such as a chain to rotate the pivot shafts 3,3 and the pair of feed rollers 7,7 to predetermined torques. It can be rotated in the forward and reverse directions at about 10 to 20 RPM as shown in FIGS.
The motor 5 has a large bevel gear G2 meshed with a small bevel gear G1 on the rotation shaft m side of the motor M for decelerating rotation. Therefore, it is not necessary to add a speed reducer on the motor M side. The driving gear 5 can be arranged orthogonally as shown in FIG.

When the cable starting end is pushed between the rollers 7 and 7 from the self-feeding rotation side, the feeding roller 7 is well fitted to the outer surface of the twisted wire cable having a large or small cable diameter or a diameter variation such as a twisted cable. , 7 is Fig. 7
It is concaved against the internal pressure like this, and this concaved portion 7a, 7a
By the rolling and pressing frictional force with respect to the cable Ca, the cable Ca can be sent out in the direction connecting the cable guide members 10 and 10 as shown in FIGS. 5 and 8 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 vertically elongated shape and the roller intervals are widened.

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 as shown in FIG. The movement is a function of preventing the cable from coming off by the concave portions 7a, 7a of the feeding roller 7, 7 as shown in FIG. (See Fig. 2) Cable C being sent out
It is possible for a to be stably sent out without deviantly escaping between the sending rollers 7 and 7.

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, a known slip clutch is interposed between the motor shaft m and the bevel gear. By adjusting the slip adjusting nut and the like, the slack in the middle of the cable can be reduced by setting the slip to be farther from the cable drum and pulling with a large torque.

Next, in order to bend the cable Ca in a right angle direction and send it, the slip condition of the two slip clutches closest to the curved portion and the cable Ca for the rollers 7, 7 are to be bent.
By setting the sliding degree of the cable to the same degree, it is possible to stably send out the curved cable without changing the shape of the curved extra length portion Cb of the cable Ca in FIG.

In order to allow the cable Ca to escape from between the sending rollers 7 and 7 like when the sending of the cable Ca is completed, if the cable Ca has been sent to its end, it can be taken out 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.

[0028]

Since the present invention is constructed as described above,
The following effects are achieved. A chain gear G is provided under each of a pair of pivots 3,3 pivotally supported by bearings 2,2 on the base 1.
And a transmission member such as a roller chain for rotating the gears G, G in the forward and reverse directions.
4, a transmission member 4 is provided around a driving gear 5 which is rotated by the rotational force of a motor M, and is provided on the upper part of the pair of pivots 3, 3 and is a substantially hollow spherical delivery roller 7, 7
In addition, since the driving gear 5 is decelerated and rotated by the large bevel gear G2 meshed with the small bevel gear G1 on the rotation shaft m side of the motor M, the reduction gear is not particularly added to the motor M side. Since it is good, it is advantageous in terms of space and cost. Moreover, since the motor rotation shaft m and the driving gear 5 can be arranged orthogonally, there are the first and second effects that the degree of freedom in the arrangement of the motor M is large. . Further, according to the present invention, the transmission member 4, the motor M or the driving member 5 can be housed between the upper and lower plates of the base 1 so as to be flattened as a whole, and the structure of the power transmission system including the bearing can be simplified and transmitted. The loss can be remarkably reduced, and even if fingers are sandwiched between the rollers 7 and 7, since the rollers are recessed due to the elastic hollow body, there is a third effect that it is safe.

When a plurality of feeding devices A according to the present invention are placed in parallel in series to feed a long cable Ca over a long distance, the cable Ca to the rollers 7,7 is fed by the internal pressure of each roller 7,7.
If the slip clutch is set farther from the cable drum by adjusting the slip adjusting nut or the like so that slip is set smaller and pulling with a large torque, the slack in the middle of the cable can be reduced. Yes, cable Ca
There is also a fourth effect that the sheet can be smoothly fed because it is not bent or scratched.

When the cable Ca is bent in the right angle direction and sent, the sliding condition of the cable Ca with respect to the two sending rollers 7, 7 closest to the bent portion and the slip clutch 5 as in claim 2 are described. By setting the sliding condition of 5 and 5 to the same level for both units, the extra bend C of the cable Ca
There is also a fifth effect that it is possible to stably bend and bend the cable without changing the shape of b.

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 sixth effect that the cable Ca 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 fluctuation by the rolling and pressing frictional force of the 7a, 7a against the cable Ca.

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.
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, in particular, in the present invention, the roller for feeding the cable Ca is used at the end of feeding 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 an eighth effect that the cable removing work can be remarkably easy because the cable Ca can be released by pulling up the cable Ca against the sandwiching 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 portion showing an example of the device of the present invention.

FIG. 4 is a sectional view of an essential part showing an example of the present apparatus.

FIG. 5 is a plan view showing an example of this device.

FIG. 6 is a perspective view showing an example of this apparatus.

FIG. 7 is a cutaway elevation view showing an example of use of this device.

FIG. 8 is a schematic plan view showing an example of use of this device.

FIG. 9 is a plan view of another example of the transmission member bridging of the device of the present invention.

FIG. 10 is a plan view of another example of the transmission member bridging of the device of the present invention.

[Explanation of symbols]

 1 base 2 bearing 3 pivot 4 transmission member such as roller chain 5 driving gear 6 mounting cylinder 7 feeding roller 8,9 holding fixture 10 cable guide member G chain gear G1 small bevel gear G2 large bevel gear M motor m rotation Fasteners such as shaft n screws

Claims (2)

[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. The chain gears G are respectively fitted to the lower parts of the pair of pivots 3,3, and the respective gears G,
A large-diameter bevel gear G in which a transmission member 4 such as a roller chain for rotating them in the forward and reverse directions is hung over G and the transmission member 4 is meshed with a bevel gear G1 of the rotation shaft m of the motor M
The mounting cylinders 6 and 6 which are provided around the driving gear 5 which rotates by the rotational force of 2 and which are fitted on the upper portions of the pair of pivots 3 and 3.
Feed roller 7 made of a hollow elastic material with a nearly spherical surface
7 is attached by means of fasteners n such as screws via holding fixtures 8 and 9, and cable guide members 10 and 10 are pivotally supported laterally on the upper and lower surfaces of the base 1 on both sides of each of the feed rollers 7 and 7. An electric cable feeding device that is installed. 2. The electric cable feeding device according to claim 1, wherein a slip clutch is interposed between the driving gear 5 and the motor rotating shaft m.