KR102250283B1 - Electronic power cable puller - Google Patents

Abstract

The present invention relates to a power cable puller. According to an embodiment of the present invention, a first motor having a first drive shaft rotating at a predetermined rotational speed; A second motor having a second drive shaft rotating at a predetermined rotational speed; A first reduction gear that decelerates the rotational speed of the first drive shaft to rotate the first rotational shaft at a reduced rotational speed; A second reduction gear that decelerates the rotation speed of the second drive shaft to rotate the second rotation shaft at a reduced rotation speed; A first roller that is fixed to the first rotation shaft and the first rotation shaft, rotates together, and has a first friction ball surrounding the first rotation shaft; And a second friction ball fixed to the second rotation axis parallel to the first rotation axis and rotated together and surrounding the second rotation axis, and arranged to allow adjustment of the distance with respect to the first roller. It may include 2 rollers.

Description

Electronic power cable puller

The present invention relates to wiring equipment, and more particularly, to a power cable puller.

In a technical field requiring the installation and removal of electric wires such as construction, ships, and civil engineering, it is difficult to handle electric wires having high loads, large volumes, and low flexibility. The wires must be moved while maintaining a certain distance from the ground so that the sheath of the wires is not damaged due to friction with the ground during movement, and the wires are not always moved horizontally or in a straight line with the ground and laid under the ground. It is very important to control the moving path and moving speed of the electric wires because there are cases where the electric wires are curved or the movement direction of the electric wires is curved.

In addition, in the field of technology using heavy equipment and heavy materials such as construction, ships, and civil engineering, it is important to implement an economical installation method at low cost. For example, in the above technical field, wires to be installed may be made of various materials, and may be formed in various thicknesses. Accordingly, the load of each of the electric wires may vary depending on the density, composition, or thickness of the material. Using a new laying machine that fits the load for each wire subject to laying work has a problem that it is inefficient due to excessive consumption of the cost of transporting the laying machine, production and purchase costs, or installation time. An installation machine with a wide usable range is required to be able to lay the wires of the load.

The technical problem to be achieved by the present invention is to provide a power cable puller that minimizes power loss by minimizing the use of a chain or belt used for power transmission.

In addition, the technical problem to be achieved by the present invention is to provide a power cable puller that simplifies components for wire pulling, is manufactured in a small size, is easy to install, transport and dismantle, and has a wide usable range.

A power cable puller according to an embodiment of the present invention for solving the above problems includes a first motor having a first driving shaft rotating at a predetermined rotational speed, and a second driving shaft rotating at a predetermined rotational speed. A motor, a first reduction gear for rotating the first rotation shaft at a reduced rotation speed by decelerating the rotation speed of the first drive shaft, and rotating the second rotation shaft at a reduced rotation speed by decelerating the rotation speed of the second drive shaft A first roller having a first friction ball that is fixed to the first rotation shaft and rotates together and surrounds the first rotation shaft, and the second rotation shaft parallel to the first rotation shaft and the It may include a second roller that is fixed to the second rotation shaft, rotates together, and has a second friction ball surrounding the second rotation shaft, and is disposed so as to be able to adjust a distance with respect to the first roller. In another embodiment, the first drive shaft and the second drive shaft may be parallel to each other.

In an embodiment, a reduction ratio of the first reduction gear or the second reduction gear may be in the range of 2:1 to 10:1. In another embodiment, the first reduction gear or the second reduction gear may be a synthetic gear train including a plurality of reduction gear sets.

In one embodiment, the rotation of the first motor and the rotation of the second motor may be synchronized with each other. In another embodiment, the power cable puller further includes a synchronization module connected to the first motor and the second motor, and the synchronization module drives the first motor and the second motor by frequency control to drive the first motor and the second motor. The rotation of the motor and the second motor may be synchronized with each other.

The power cable puller according to an embodiment further includes an overload control module, wherein the overload control module includes a motor sensing unit that detects operation information of the first motor or the second motor, and sets an allowable range of the operation information. An allowable range setting unit that compares the operation information and the allowable range to determine whether the overload is transmitted by the first motor or the second motor, and sets a reduction ratio for removing the overload from the overload control unit and the overload control unit. It may include a reduction gear module for controlling the reduction ratio of the first reduction gear or the second reduction gear according to the reduced reduction ratio.

The power cable puller according to an embodiment includes the first roller, the first reduction gear, and the first motor to be fixedly supported, and to adjust the distance between the second roller and the first roller, the second roller, It may further include a frame support for supporting the second reduction gear and the second motor to be displaceable. In another embodiment, the frame support has an opening opening in a displacement direction so that the first roller and the second roller are exposed to the outside, and the second rotation axis of the second roller is displaced for adjusting the distance. It may include a frame body, a drive support slidably coupled to the frame body to fix and displace the second roller and the second motor together, and a driver coupled to the drive support to displace the drive support. . In another embodiment, the first reduction gear and the second reduction gear may be accommodated in the frame body.

In one embodiment, the actuator may include a ratchet wheel rotatably coupled to the frame body and a handle bar coupled to the ratchet wheel.

In one embodiment, the first friction ball and the second friction ball may have a convex axial cross-sectional shape. In another embodiment, the first friction ball and the second friction ball may include ceramic, rubber, or synthetic resin.

According to an embodiment of the present invention, a second motor is provided between a rotation shaft of the first roller and a first motor that transmits power to the first roller, and between a rotation shaft of the second roller and a second motor that transmits power to the second roller. The 1 reduction gear and the second reduction gear are inserted so that when an electric wire with a large load is installed, overload is transmitted to the motor to prevent damage or damage or energy efficiency from decreasing, and the motors are directly powered by the rotating shafts. By changing the rotational speed in stages as compared to the case of transmitting the signal, it is possible to minimize overload when the speed of the motor changes or a failure of the motor due to the overload.

In addition, since the first and second motors that transmit rotational power to each of the first and second rollers are connected, a power cable puller with minimal power loss may be provided by not using a fastener such as a chain.

1A is a perspective view of a power cable puller according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view of the power cable puller of FIG. 1A.
2A is a graph showing the relationship between the torque and the number of revolutions of the DC motor, and FIG. 2B is a graph showing the relationship between the torque and the number of revolutions of the induction motor.
3A is a perspective view showing a connection relationship between a first motor, a first reduction gear, and a first rotation shaft according to an embodiment of the present invention, and FIG. 3B is a first motor and a first reduction gear according to another embodiment of the present invention. And a perspective view showing a connection relationship between a first rotation shaft, and FIG. 3C is a side view showing a connection relationship between a first motor, a first reduction gear, and a first rotation shaft according to another embodiment.
4 is a configuration diagram of a first motor device according to an embodiment of the present invention.
5 is a block diagram of a synchronization module that controls rotation of a first motor and a second motor M2 of a power cable puller according to an embodiment of the present invention.
6 is a block diagram of an overload control module according to an embodiment of the present invention.
7A and 7B are diagrams illustrating a method of converting a reduction ratio of a first reduction gear according to an embodiment of the present invention.
8A is a perspective view of a frame support according to an embodiment of the present invention, and FIG. 8B is a view showing an adjustment of a distance between a first roller and a second roller according to an embodiment.
9 is a perspective view of a power cable puller according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are provided to more completely describe the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is as follows. It is not limited to the examples. Rather, these embodiments are provided to make the present disclosure more faithful and complete, and to fully convey the spirit of the present invention to those skilled in the art.

In the drawings, the same reference numerals refer to the same elements. Also, as used herein, the term “and/or” includes any and all combinations of one or more of the corresponding listed items.

The terms used in this specification are used to describe examples, and are not intended to limit the scope of the present invention. In addition, even if it is described in a singular number in this specification, a plurality of forms may be included unless the singular number is clearly indicated in the context. In addition, the terms "comprise" and/or "comprising" as used herein specify the presence of the mentioned shapes, numbers, steps, actions, members, elements and/or groups thereof. It does not exclude the presence or addition of other shapes, numbers, movements, members, elements and/or groups.

Reference to a layer formed "on" a substrate or other layer herein refers to a layer formed directly on the substrate or other layer, or formed on an intermediate layer or intermediate layers formed on the substrate or other layer. It may also refer to a layer. Further, for those skilled in the art, a structure or shape arranged “adjacent” to another shape may have a portion disposed below or overlapping the adjacent shape.

In this specification, "below", "above", "upper", "lower", "horizontal" or "vertical" Relative terms such as, as shown on the drawings, may be used to describe the relationship between one component member, layer, or region with another component member, layer, or region. It should be understood that these terms encompass not only the orientation indicated in the figures, but also other orientations of the device.

In the following, embodiments of the present invention will be described with reference to cross-sectional views schematically showing ideal embodiments (and intermediate structures) of the present invention. In these drawings, for example, the size and shape of the members may be exaggerated for convenience and clarity of description, and in actual implementation, variations of the illustrated shape may be expected. Accordingly, the embodiments of the present invention should not be construed as being limited to the specific shape of the region shown in this specification. In addition, reference numerals of members in the drawings refer to the same members throughout the drawings.

In the present specification, terms such as'first' and'second' may be interchangeable. For example, the disclosure of the first motor M1, the first rotation shaft RS1, the first friction ball and the first roller R1 is the second motor M2, the second rotation shaft RS2, and the second The same can be applied to the friction ball and the second roller R2. Descriptions of other components may also be referred to each other.

1A is a perspective view of a power cable puller 10 according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view of the power cable puller 10 of FIG. 1A.

1A and 1B, the power cable puller 10 according to an embodiment includes a first motor M1 rotating at a predetermined rotational speed, a second motor M2 rotating at a predetermined rotational speed, and A first reduction gear RG1 that rotates the first rotation shaft RS1 at a reduced rotation speed by decelerating the rotation speed, and a second reduction gear that rotates the second rotation shaft RS2 at a reduced rotation speed by decelerating the rotation speed. A first roller R1 and a second rotation shaft having a first friction ball that is fixed to the gear RG2, the first rotation shaft RS1 and the first rotation shaft RS1 and rotates together, and surrounds the first rotation shaft RS1. It may include a second roller (R2) having a second friction ball (RS2) and fixed to the second rotation shaft (RS2) rotates together and surrounds the second rotation shaft (RS2). 1B is a cross-sectional view of the power cable puller 10 of FIG. 1A taken from D.

In one embodiment, the first motor M1 and the second motor M2 are a direct current (DC) motor such as a step motor, a servo motor including a feedback circuit, a reluctance motor, and a hysteresis motor. And non-excited motors such as permanent magnet motors, synchronous motors such as DC-excited motors, asynchronous/induction motors, single-phase synchronization It may include an alternating current (AC) motor such as a motor or a three-phase motor.

The AC motor may be, as a non-limiting example, an induction motor, a reversible motor, or a speed control motor. Preferably, an induction motor can be used. The power of the induction motor may be 50 W to 500 W, or 100 W to 200 W, for example, 150 W. The induction motor has advantages of simple structure and high reliability. According to an embodiment of the present invention, in order to drive the first roller R1 and the second roller R2 by a simple structure and a small volume, the first motor M1 and the second motor M2 respectively generate rotational power. By transmitting, the first rotation shaft RS1 and the second rotation shaft RS2 to drive the first rotation shaft RS1 and the second rotation shaft RS2 together by connecting members such as a chain through the transmission of rotational power by one motor. ), compared to the power cable puller 10 that distributes and transmits the rotational power to), a power cable puller with less power loss due to slip or friction of the connection members or malfunction due to an error in rotational speed may be implemented.

In one embodiment, the first motor M1 and the second motor M2 may each have a first drive shaft DRS1 and a second drive shaft DRS2. The first drive shaft DRS1 and/or the second drive shaft DRS2 may rotate the first motor gear MG1 and the second motor gear MG2, respectively, and the first motor gear MG1 and the second motor gear The MG2 may be engaged with the first reduction gear RG1 and the second reduction gear RG2, respectively, to rotate the first reduction gear RG1 and/or the second reduction gear RG2. Hereinafter, a description of the first drive shaft DRS1 may be referred to as the second drive shaft DRS2. The first driving shaft DRS1 may include at least one coupling member of a clamping hub having a spiral pattern, a keyway groove, or a coupling pattern formed at at least one end thereof. A first motor gear MG1 meshed with the first reduction gear RG1 to rotate the first reduction gear RG1 may be coupled to the coupling member. In another embodiment, a gear groove is formed in the first drive shaft DRS1, so that the first drive shaft DRS1 may be a linear gear shaft that operates as the first motor gear MG1.

In one embodiment, the rotation axis of the first motor gear MG1 and the rotation axis of the first reduction gear RG1 may cross each other. In this case, although not shown, a direction change gear between the first motor gear MG1 and the first reduction gear RG1 in order to transmit the rotational power of the first motor gear MG1 to the first reduction gear RG1 Can be provided. The direction change gear may include at least one of a spur bevel gear and a helical bevel gear. The types of gears described above are only non-limiting examples, and known techniques for all types of gears in which rotation axes are not parallel to each other but cross each other may be applied.

In another embodiment, the rotation shaft of the first motor gear MG1 and the rotation shaft of the motive gear among the gears of the first reduction gear RG1 may cross each other. The first reduction gear RG1 may include at least one driving gear and at least one driven gear. Any one of the at least one driving gear is engaged with the first motor gear MG1 to transmit the rotational power of the first motor M1 to the driven gear. When the rotation axis of the motive gear is not parallel to the rotation axis of the first motor gear MG1 and crosses each other, the first motor gear MG1 and the motive gear may constitute a spur bevel gear or a helical bevel gear. . In this case, a power cable puller that is miniaturized by not inserting a separate gear for direction change between the first motor gear MG1 and the first reduction gear RG1, and can be easily moved and installed due to its light weight ( 10) can be provided.

In one embodiment, the power cable puller 10 may include a first roller R1, a second roller R2, a first motor M1, and a second motor M2. The first roller R1 and the second roller R2 may be disposed in parallel on the frame support that supports the first roller R1 and the second roller R2 from below. The first rotation shaft RS1 of the first roller R1 is connected to the first motor M1 through the first reduction gear RG1 to receive the power of the first motor M1, and the second roller R2 The second rotation shaft RS2 of is connected to the second motor M2 through the second reduction gear RG2 and rotates by receiving the rotational power of the second motor M2.

In another embodiment, the first roller R1 and the second roller R2 may be arranged vertically. For example, the first roller (R1) is disposed at the bottom, the second roller (R2) is disposed above the first roller (R1), the first roller (R1) and the second roller (R2) are connected It can be supported by a frame. The first rotation shaft RS1 may be disposed above the first drive shaft DRS1 in parallel with the first drive shaft DRS1, and the second rotation shaft RS2 is a second drive shaft DRS2 above the second drive shaft DRS2. It can be arranged parallel to. When the first roller R1 and the second roller R2 are arranged vertically, the supply direction of the wire can be adjusted up and down by adjusting the rotational speed of each of the first and second motors M1 and M2. .

2A is a graph showing the relationship between the torque and the number of revolutions of the DC motor, and FIG. 2B is a graph showing the relationship between the torque and the number of revolutions of the induction motor.

Referring to FIG. 2A, it can be seen that in the DC motor, the rotation speed of the motor and the motor torque are inversely proportional. In general, when the motor is driven, there is a rated torque for stably operating the motor, and if the motor is operated for a long time with an output exceeding the rated torque, it may lead to damage to the motor. When the load of the cable laid by the power cable puller 10 is large, a considerable amount of torque is required to rotate the first roller R1 and/or the second roller R2 to carry the cable, When the torque exceeds the rated torque of the motor, the motor may be damaged. Therefore, it may be desirable to provide a torque converter capable of increasing the torque of the motor in order to improve the durability of the power cable puller 10 and use it for a long period of time and to use it flexibly for cable transport with a large load. have.

Referring to FIG. 2B, when the motor starts to rotate, for example, when the rotation speed is 0 rpm, the torque of the motor has a magnitude of Ts. Thereafter, when the rotational speed of the motor increases, the soil of the motor has a maximum value of Tm. The range in which the rotational speed of the motor is from 0 rpm to NM is referred to as an unstable region, and in the unstable region, the driving of the motor may be unstable and continuous rotation may not be possible. Thereafter, when the number of rotations of the motor exceeds Nm, the motor enters a stable region, for example, a region between the M point and the O point. In the stable region, as the rotational speed increases, the torque of the motor decreases. In this case, the motor may rotate at a point P where the magnitude of the torque and the rotational speed are balanced. When the motor is stopped and replaced with a cable with a large load, the motor cannot operate because the motor cannot generate a torque greater than Ts, and the motor is replaced with the cable while the motor is running in a stable area. When the rotational speed of is reduced to reach point M, and the torque required for laying the cable exceeds Tm, the motor enters an unstable area and eventually the motor stops. Therefore, even in the case of an induction motor, it may be desirable to add a torque converter in order to provide the power cable puller 10 with a wide usable range so that it can be applied to cables having various loads. The above-described induction motor is a non-limiting example, and may be applied to various types of AC motors including induction motors, and does not limit the present invention.

3A is a perspective view showing a connection relationship between a first motor M1, a first reduction gear RG1, and a first rotation shaft RS1 according to an embodiment of the present invention, and FIG. 3B is a perspective view showing a connection relationship between the first motor M1, the first reduction gear RG1, and the first rotation shaft RS1. Is a perspective view showing a connection relationship between the first motor M1, the first reduction gear RG1, and the first rotation shaft RS1, and FIG. 3C is a first motor M1 and a first reduction gear according to another embodiment. It is a side view showing the connection relationship between (RG1) and the 1st rotation shaft (RS1).

Referring to FIG. 3A, in an embodiment, the first reduction gear RG1 may be a spur gear. The first reduction gear RG1 or the second reduction gear RG2 may be a synthetic gear train including a plurality of reduction gear sets. For example, the first reduction gear RG1 may include at least one driving gear and at least one driven gear. The motive gear and/or the driven gear is a relative concept, the motive gear is a gear that transmits power to a gear meshed with the motive gear, and the driven gear is a gear that receives power from a gear meshed with the driven gear to be. The first reduction gear RG1 may include a pair of a driving gear and a driven gear, and may include, for example, a first gear RG1a and a second gear RG1b. In an embodiment, the first motor gear MG1 and the first gear RG1a may be bevel gears. As described above, when the first motor M1 and the first gear RG1a are bevel gears, there is an advantage that miniaturization of the power cable puller 10 is possible by not adding a gear for switching the rotational axes of the gears. have.

In one embodiment, z0 gear grooves of the first motor M1, z1 gear grooves of the first gear RG1a, z2 gear grooves of the second gear RG1b, and the first output gear OUT1 ) May have z3 gear grooves. In this case, the relationship between the torque T1 of the first motor M1 and the first output torque T2 received by the first rotation shaft RS1 can be expressed as Equation 1 below.

[Equation 1]

Referring to Equation 1, when the first motor gear MG1 is directly engaged with the first output gear OUT1, the first output torque T2 is proportional to z3/z0, but the first reduction gear RG1 is By arranging, it is proportional to z1*z3/z0*z2, and if the number of gear grooves z1 and z2 of the first reduction gear RG1 is properly adjusted, a high reduction ratio can be obtained without space constraints. For example, when a gear ratio of 40:1 or more is required between the first motor gear MG1 and the first output gear OUT1 so that an overload is not transmitted to the first motor M1, the first reduction gear RG1 In the absence of ), the first output gear OUT1 has a diameter of about 40 times that of the first reduction gear RG1. In this case, it may be an obstacle to miniaturization of the power cable puller 10, and it may be difficult to move or install the power cable puller 10, which requires installation work at various locations underground and/or above the ground. On the other hand, when the first reduction gear RG1 is provided, the gear ratio between the first motor gear MG1 and the first gear is 4:1, and the gear ratio between the second gear and the first output gear OUT1 Even if G has a gear ratio of 10:1, as a result, the gear ratio between the first motor gear MG1 and the first output gear OUT1 has a gear ratio of 40:1, so that a gear having a large volume so as to be limited in space can be obtained. There is an advantage of implementing a reduction ratio such that an overload is not transmitted to the first motor M1 without use.

Referring to FIG. 3B, in an embodiment, the first reduction gear RG1 may be planetary gear trains. The first reduction gear (RG1) is the outermost ring gear (RG), the planetary gears (PG) that are in contact with the ring gear (RG) from the inside of the ring gear (RG), and the inside of the planetary gear (PG). It may include a sun gear (SG) is disposed in the planetary gear (PG) and meshing. The ring gear RG is fixed, and when the first drive shaft DRS1 rotates by the operation of the first motor M1, the sun gear SG at the end of the first drive shaft DRS1 rotates. The planetary gear PG rotates and revolves by the rotation of the planetary gears PG, and the carrier CR fixed at the center of the planetary gears PG rotates. When the carrier CR rotates, the carrier shaft CRX fixed to the carrier CR rotates, and rotational power is transmitted to the first output gears OUT1a and OUT1b by the rotation of the carrier shaft CRX. The first output gears OUT1a and OUT1b transmit the rotation power to the first rotation shaft RS1.

In an embodiment, the first output gears OUT1a and OUT1b may include at least one of a spiral bevel gear, a bevel gear, a helical bevel gear, and a worm gear. When the first reduction gear RG1 is a planetary gear PG row, the input rotation shaft and the output rotation shaft of the first reduction gear RG1 may be disposed on the same line. Accordingly, since the output rotation shaft of the first reduction gear RG1 is on the same line as the first drive shaft DRS1, the direction of the first rotation shaft RS1 is changed to a direction perpendicular to the first motor M1. To this end, the first output gears OUT1a and OUT1b may include gears capable of changing directions. This is only a non-limiting example, and the disclosure of all kinds of gears in which the rotational axes of the known techniques intersect may be referred to.

In one embodiment, the gear groove of the sun gear SG is Zs, the gear groove of the ring gear RG is Zr, the rotation speed of the sun gear SG is Ns, the rotation speed of the ring gear RG is Nr, and the carrier When the number of rotations of (CR) is Nc, the relational expression shown in Equation 2 below holds.

[Equation 2]

In addition, according to the above-described embodiment, the relational expression shown in Equation 3 below is established to obtain a reduction ratio.

[Equation 3]

In another embodiment, the sun gear SG is fixed, the rotation power is transmitted by the first drive shaft DRS1 to rotate the ring gear RG, and the rotation power output from the carrier CR is converted to the first output gear. In the case of transmitting to (OUT1), the relational expression as in Equation 4 below is established and the reduction ratio can be obtained.

[Equation 4]

The above equations and related features are non-limiting examples, and a reduction ratio may be obtained by fixing one element of the sun gear SG, the ring gear RG, and the carrier CR. For a detailed description thereof, reference may be made to suitable known techniques. According to an embodiment of the present invention, when the planetary gear (PG) row is used as the first reduction gear (RG1), there is an advantage that the power transmission efficiency is higher than that of other types of reduction gears, so that small size and weight can be reduced. It is possible to provide a power cable puller 10 that is easy to arrange and install.

3C, in one embodiment, the first drive shaft DRS1 is rotated by the operation of the first motor M1, and the first motor gear MG1 is fixed to the first drive shaft DRS1 to rotate power. Can be delivered. The first motor gear MG1 is engaged with the third gear RG1c, the third gear RG1c is coupled and fixed so as not to rotate relative to each other with the fourth gear RG1d, and the fourth gear RG1d is It may be engaged with the fifth gear RG1e. The clutch gear CLG is coupled to and fixed to the fifth gear RG1e, and the clutch gear CLG is fixed to the output shaft OUTS, so that the output shaft OUTS can rotate at the same rotational speed as the fifth gear RG1e. have. In one embodiment, the motor torque of the first motor gear MG1 is T1, the gear groove of the first motor gear MG1 is z0, the gear groove of the third gear RG1c is z4, and the fourth gear ( When the gear groove of RG1d) is z5, the gear groove of the fifth gear (RG1e) is z3, and the torque of the output shaft (OUTS) is T2, between the motor torque and the torque of the output shaft (OUTS) is the following equation 5 The same relationship is established.

[Equation 5]

As described above, a reduction ratio having a sufficient size can be obtained so that an overload is not transmitted to the first motor M1 by the first reduction gear RG1, and the first output gears OUT1a and OUT1b correspond to the reduction ratio. Even if it does not have a radius larger than that of the first motor gear MG1 as much as the above ratio, the power cable puller 10 can be miniaturized and lightened by implementing the reduction ratio. In addition, by combining various types of gears, the reduction ratio can be adjusted in a wide range, thereby providing a highly usable power cable puller 10 having a wide load range of cables that can be installed.

In addition, in the power cable puller 10 according to the embodiment of the present invention, the rotation power of the first motor M1 / the second motor M2 is not directly transmitted to the first rotation shaft RS1 / the second rotation shaft RS2. Instead, it has a predetermined reduction ratio and is transmitted through the first reduction gear RG1 / second reduction gear RG2 that can serve as a torque converter, so that the first motor M1 / the second motor ( Even if the rotational speed of M2) increases or decreases, or the rotation direction is changed, the impact due to the inertia of the first rotational shaft RS1 / second rotational shaft RS2 is directly affected by the first motor (M1) / second motor (M2) It is not transmitted to the motor, thus preventing damage to the motor and improving durability.

4 is a configuration diagram of a first motor device 20 according to an embodiment of the present invention.

Referring to FIG. 4, in one embodiment, the first motor device 20 rotates the first motor M1 and the first drive shaft DRS1 having a first drive shaft DRS1 rotating at a predetermined rotational speed. It may include a first reduction gear (RG1) for rotating the first rotation shaft (RS1) at a reduced rotation speed by decelerating the speed. In the first motor device 20, the first motor M1 and the first reduction gear RG1 may be accommodated in a housing or may be fixed by a frame.

The first motor device 20 according to an embodiment includes a housing in which the first motor M1 and the first reduction gear RG1 are mounted therein, and the gear ratio of the first reduction gear RG1 is 2:1. It may be in the range of 10:1. The housing prevents the introduction of foreign substances between the first motor gear MG1 and the first reduction gear RG1 coupled to the first motor M1 to form a gap between the gear grooves, resulting in power loss. In addition, it is possible to prevent the first motor gear MG1 or the first reduction gear RG1 from being rusted due to high humidity in the surroundings or abrasion due to friction with foreign substances. Accordingly, when the first motor device 20 and the first reduction gear RG1 are packaged and provided as the first motor device 20, durability is improved and a power cable puller 10 that can be used for a long period of time can be implemented. have.

In particular, when the first reduction gear RG1 is designed to be reduced in multiple stages including a plurality of driving gears and a plurality of driven gears, the size of the driving gears and/or the driven gears is reduced by a number of reduction gears. It may be smaller than the case, and the gears may be closely assembled to each other to be accommodated in the first motor device 20. According to an embodiment of the present invention, a power cable puller 10 that is smaller and lighter than the case of using a single reduction gear can be provided by obtaining a high reduction ratio using small gears.

5 is a block diagram of a synchronization module 150 for controlling rotation of the first motor M1 and the second motor M2 of the power cable puller 10 according to an embodiment of the present invention.

Referring to FIG. 5, in one embodiment, the rotation of the first motor M1 and the rotation of the second motor M2 may be synchronized with each other. For example, the power cable puller 10 is a synchronization module that synchronizes the rotations of the first motor M1 and the second motor M2 by frequency-controlled driving the first motor M1 and the second motor M2. It may further include (150). In one embodiment, the synchronization module 150 includes a first detection unit 151 / a second detection unit 152 and a first detection unit that detects the rotational speed of the first motor M1 / the second motor M2. (151) / It is determined whether synchronization is performed using the information on the rotational speed from the second detection unit 152, and the first motor (M1)/ The first motor (M1) / second motor (M2) according to the electrical signal received from the synchronization control unit 155 and the synchronization control unit 155 for transmitting an electrical signal for controlling the rotational speed of the second motor (M2) It may include a first driving circuit 153 / second driving circuit 154 to control the driving of the.

In one embodiment, the first detection unit 151 detects the rotational speed of the first motor M1 and inputs it to the synchronization control unit 155, and the second detection unit 152 rotates the second motor M2. The speed may be sensed and input to the synchronization control unit 155. The first sensing unit 151 and the second sensing unit 152 measure the rotational speed of the first motor M1 and the second motor M2 per unit time, or measure the rotation speed of the first motor M1 and the second motor M2. It is also possible to measure the distance between the zero-crossing point of the current signal input to ). The types of sensors applied to the first sensing unit 151 and the second sensing unit 152 are not limited to a specific example, and various types of sensors may be applied.

In an embodiment, the synchronization control unit 155 may receive information about a predetermined set speed or cable pulling direction from the outside. For example, when the synchronization control unit 155 receives information indicating that the cable pulling direction is switched in the direction of the first motor M1, the rotational speed of the second motor M2 is increased and the first motor M1 is By reducing the rotational speed, the cable pulling direction may be adjusted in the direction of the first motor M1. The amount of change in the cable pulling direction may be proportional to a difference between the speed of the first motor M1 and the speed of the second motor M2.

In another embodiment, when the set speed received by the synchronization control unit 155 from the outside and the rotation speed of the first motor M1 / the second motor M2 do not match, the cable pulling speed received from the outside The difference between the rotational speed of the first motor M1 and the second motor M2 can be converted into a numerical signal corresponding to -n from +n. The synchronization control unit 155 may control the rotational speed by transmitting the signal to the first driving circuit 153 and/or the second driving circuit 154.

In one embodiment, the synchronization control unit 155 may include input/output means such as a keyboard, a display device, or other individual terminal device. Information on a cable pulling speed and a cable pulling direction may be received from the outside through the input/output means, and the input of the information may be possible in a wired/wireless manner. In addition, as an example, the input information may be executed in the same manner when reused by the automatic memory memory, or may be manually stored in the memory of the synchronization control unit 155 and reset through the memory when reused. According to an embodiment of the present invention, by numerically setting the rotational speed or cable pulling speed of the motor and setting the cable pulling direction to a value such as coordinates or angle, the number of trials and errors is reduced compared to the case of non-quantitative setting. Rapid installation work is possible. In addition, it is possible to provide a power cable puller 10 capable of an automated cable pulling operation even if an operator does not reside by setting the cable pulling speed and the cable pulling direction step by step according to an installation route.

In one embodiment, the first driving circuit 153 and the second driving circuit 154 may adjust the speeds of the first motor M1 and the second motor M2 according to the electrical signal received from the synchronization device. When the first motor M1 and the second motor M2 are DC motors, the voltage of the input current or the magnitude of the current may be changed, or pulse width modulation (PWM) may be used. In another embodiment, when the first motor (M1) / second motor (M2) is an alternating current (AC) motor, the speed of the first motor (M1) / second motor (M2) is adjusted by adjusting the magnitude of the frequency. You can change it. In another embodiment, the speed of the first motor M1 / second motor M2 changed by the first driving circuit 153 and the second driving circuit 154 is again adjusted to the first detection unit 151 and the second driving circuit 154. 2 The sensing unit 152 detects and transmits an electrical signal to the synchronization control unit 155, and uses the received electrical signal as an input signal to obtain an output signal generated by the synchronization control unit 155 as a first signal. A feedback algorithm transmitted to the driving circuit 153 and the second driving circuit 154 may be successively performed. Further, the first driving circuit 153 and the second driving circuit 154 may comprise additional devices for controlling electrical signals such as an inverter. This is a non-limiting example, and reference can be made to all known technical ideas for controlling the rotational speed of the motor.

6 is a block diagram of an overload control module 160 according to an embodiment of the present invention.

6, in one embodiment, the power cable puller 10 may further include an overload control module 160, the overload control module 160, the first motor (M1) or the second motor ( Comparing the motion information and the allowable range obtained from the motor sensing unit 161 for sensing the motion information of M2), the allowable range setting unit 165 for setting the allowable range of the motion information, and the motor sensing unit 161 Thus, it is determined whether the overload is transmitted from the first motor M1 or the second motor M2, and is determined according to the reduction ratio obtained from the overload control unit 162 and the overload control unit 162 to set a reduction ratio for removing the overload. A reduction gear module 163 for controlling a reduction ratio of the first reduction gear RG1 or the second reduction gear RG2 may be included.

In one embodiment, the motor detection unit 161 detects at least one of temperature, rotational speed, overvoltage, overcurrent, or voltage unbalance of the first motor M1 and/or the second motor M2 to receive operation information. Acquire, and transmit the operation information to the overload control unit 162. The operation information may vary according to the type of the first motor M1 and/or the second motor M2. The above-described operation information is a non-limiting example, and all types of information capable of breaking whether or not the motor is overloaded may be included.

In one embodiment, the overload control unit 162 determines whether the first motor M1 and/or the second motor M2 transmits an overload. The overload control unit 162 receives the allowable range from the allowable range setting unit 165 and compares the operation information with the allowable range to determine whether the first motor M1 and/or the second motor M2 transmits an overload. can do. When the operation information is out of the allowable range, it is determined as an overload state, and an appropriate reduction ratio can be calculated. For example, if the temperature in the operation information exceeds the allowable range, it means that the first motor M1 and/or the second motor M2 is overheated, so that a reduction ratio larger than the current reduction ratio can be calculated. . When the operation information is within the allowable range, the cable laying speed may be increased by calculating an appropriate reduction ratio smaller than the existing reduction ratio.

In an embodiment, the allowable range setting unit 165 may set an allowable range for at least one or more of temperature, rotational speed, overvoltage, overcurrent, and voltage unbalance. For example, the allowable range may be within an error range based on the rated voltage or rated current of the first motor M1 and the second motor M2. In another embodiment, the allowable range setting unit 165 includes the first motor M1 and/or the second motor M2 in order to prevent damage or damage to the first motor M1 and/or the second motor M2. You can set the motion stop range to stop the motion of ). For example, when the allowable range is within an error range of 10% of the rated voltage or rated current, the operation stop range may be a range outside the error range of 20% of the rated voltage or rated current.

In an embodiment, the overload control module 160 may further include a storage unit 166 that provides past operation information to the allowable range setting unit 165 in order to set the allowable range. The overload control unit 162 may store operation information received from the motor detection unit 161 in the storage unit 166. The storage unit 166 may transmit the operation information to the allowable range setting unit 165, and the allowable range setting unit 165 may set the allowable range using the operation information. For example, the allowable range may be within an error range of an average value of motion information received from the storage unit 166.

In one embodiment, the overload control module 160 may further include an alarm unit 164 that transmits an alarm signal to the outside when an overload is determined by the overload control unit 162. The alarm unit 164 may include a laser emitting diode (LED) and a light emitting diode driving device to output an alarm light, or include a speaker and an audio driving device to output an alarm sound to the outside. In another embodiment, the alarm sound may be output as a plurality of discrete lights, and the alarm sound may be output as a plurality of discrete sounds to distinguish and output the degree of overload or stop of the motor.

The reduction gear module 163 controls and drives the first reduction gear RG1 / the second reduction gear RG2 according to the reduction control signal received from the overload control unit 162 to control the first motor gear MG1 / the first motor. The reduction ratio between the gear MG1 and the first rotation shaft RS1/the second rotation shaft RS2 may be controlled. In the description to be described later, a description of the first reduction gear RG1 may be referred to with respect to the second reduction gear RG2. The first reduction gear RG1 may include a plurality of gears, and any one of the plurality of gears may be selected by the clutch gear CLG. For a detailed description of the gear change, refer to FIGS. 7A and 7B.

7A and 7B are diagrams illustrating a method of converting a reduction ratio of a first reduction gear RG1 according to an embodiment of the present invention.

Referring to FIG. 7A, the rotation power of the first motor M1 is transmitted to the first drive shaft DRS1, and the first motor gear MG1 rotates by the rotation power. The first motor gear MG1 is engaged with the third gear RG1c to rotate the third gear RG1c, and the rotation shaft of the third gear RG1c is the fourth gear RG1d and the sixth gear RG1f. It is fixed and rotates together. The sixth gear RG1f is engaged with the seventh gear RG1g to rotate the seventh gear RG1g. The seventh gear RG1g is coupled to the clutch gear CLG to rotate the clutch gear CLG, and the clutch gear CLG rotates together with the output shaft OUTS by fixing the output shaft OUTS and the rotation shaft. Accordingly, the motor torque of the first motor gear MG1 is T1, the output torque of the output shaft OUTS is T2, the gear groove of the first motor gear MG1 is z0, and the gear groove of the third gear RG1c is z1, the fourth gear (RG1d) has z2, the fifth gear has z3, the fifth gear (RG1e) has z3, the sixth gear (RG1f) has z4, the seventh gear (RG1g) If there are z5 gear grooves of ), the relational expression shown in Equation 6 below can be established between T1 and T2.

[Equation 6]

Referring to FIG. 7B, unlike FIG. 7A, it can be seen that the clutch gear CLG is coupled to the fifth gear RG1e rather than the seventh gear RG1g. Accordingly, the fifth gear RG1e is engaged with the fourth gear RG1d to rotate, and the fourth gear RG1d rotates the clutch gear CLG to rotate the output shaft OUTS. Accordingly, a relational expression such as Equation 7 below can be established between T1 and T2.

[Equation 7]

According to an embodiment of the present invention, the first reduction gear RG1 may include a plurality of gears, and the clutch gear CLG is fixed to the output shaft OUTS and rotates together with the output shaft OUTS. By controlling the relationship, it is possible to implement various reduction ratios in an easy way.

In another embodiment, the engagement relationship or position of the clutch gear CLG may be controlled by the reduction gear module 163. The reduction gear module 163 may control the engagement of the clutch gear CLG so that the first reduction gear RG1 has an appropriate reduction ratio received from the overload control unit 162 to adjust the reduction ratio. The foregoing is only a non-limiting example, and does not limit the present invention, and various known techniques capable of adjusting the reduction ratio of the first reduction gear RG1 may be referred to.

In one embodiment, the reduction gear module 163 transmits the rotational power of the first motor M1 / the second motor M2 when converting the reduction ratio of the first reduction gear RG1 / the second reduction gear RG2. It may further include a clutch to release. When converting the reduction ratio, when the power transmission members of the first reduction gear RG1 / second reduction gear RG2 and the first motor M1 / second motor M2 are all coupled, due to a strong impact force Gear or motor damage may occur. Accordingly, when the clutch is further included, the life of the power cable puller 10 may be extended by converting the reduction ratio without damage to the gear or the motor.

FIG. 8A is a perspective view of a frame support according to an embodiment of the present invention, and FIG. 8B is a view showing adjustment of a distance between a first roller R1 and a second roller R2 according to an embodiment.

Referring to Figure 8a, in one embodiment, the power cable puller 10 fixedly supports the first roller (R1), the first reduction gear (RG1) and the first motor (M1), and the second roller (R2) The second roller R2, the second reduction gear RG2, and the second motor M2 may further include a frame support for displacing the second roller R2, the second reduction gear RG2, and the second motor M2 in order to adjust the distance with respect to the first roller R1. The frame support may include a frame body 100, a driving support 120 and a driver 130. The driving support 120 and the actuator 130 may be configured as an integrated frame, and each configuration may be connected by a detachable fastener, and each configuration is individually manufactured and semi-permanently using an adhesive such as an adhesive. It may be designed to be non-separable. The frame support includes at least one connection frame, and may further include additional components such as a connector, a fastener, and a support, and is not limited to the components of the above-described embodiment.

The frame body 100 is opened in the displacement direction so that the first roller R1 and the second roller R2 are exposed to the outside, and the second rotation axis RS2 of the second roller R2 is displaced to adjust the gap. It may have an opening P. In one embodiment, the frame body 100 may be a housing made of an opaque, translucent, or transparent material. The frame body 100 includes a first motor (M1), a second motor (M2), a drive support 120, a first reduction gear (RG1), a second reduction gear (RG2), a first rotation shaft (RS1), and 2 By protecting the rotating shaft RS2 and the connector between the components from the outside, elements that adversely affect maintenance and repair of the machine, such as dust, heat, and shock, can be blocked.

The opening P is a connection connecting the second rotation shaft RS2 or the second rotation shaft RS2 and the second reduction gear RG2 so that the second roller R2 including the second rotation shaft RS2 can be displaced. The frame must be large enough to allow movement. An opening P having a sufficient size may be formed so that the first rotation shaft RS1 or the connection frame connecting the first rotation shaft RS1 and the first motor M1 rotates. Likewise, the first friction ball (FR1) and the second friction ball (FR2) must secure a separation distance greater than that does not cause friction with the frame body 100 for rotation, the separation distance is the first friction ball (FR1) And the second friction ball FR2 may be secured by being supported by the connection frame.

In one embodiment, on the frame body 100 near the opening P, a scale capable of measuring the separation distance between the first roller R1 and the second roller R2, a ruler with a scale, or measuring the separation distance Thus, a measurement unit such as a measurement device including an electronic device displayed on the screen may be added. The separation distance may mean a distance from the first rotation axis RS1 to the second rotation axis RS2. The separation distance may be adjusted by receiving a predetermined value from the outside of the electronic device and applying a rotational force to the ratchet wheel (131 in FIG. 8B) or displacing the driving support 120.

The driving support 120 may be slidably coupled to the frame body 100 to support and displace the second roller R2, the second reduction gear RG2, and the second motor M2 together. The second roller R2, the second reduction gear RG2, and the second motor M2 may be coupled by a connection frame and a plurality of fasteners. In this case, the connection frame is a metallic rigid body having high strength. , Plastic or ceramic.

Referring to FIG. 8B, in one embodiment, a driving support body is provided on a part of one end of the driving base 140 to which the first roller R1, the first reduction gear RG1, and the first motor M1 are fixed. 120) can be fitted and the drive support 120 can be moved so that the length L1 of the fitted portion while being fitted to the drive base 140 is changed. For example, the driving support 120 is inserted into the driving base 140 so as to be slidable, the screw 170 is inserted into the driving support 120, and the screw 170 is longer than the driving support 120 It is long so that the end of the screw 170 toward the drive base 140 is exposed to the outside of the drive support 120, and is coupled with the screw 170 inside the drive base 140, and the screw 170 can rotate. A coupling part 171 may be provided. A screw pattern corresponding to the screw pattern of the screw 170 is formed inside the driving support 120, and when the screw 170 rotates, the driving support 120 moves by the screw pattern coupling while the driving support 120 ) Of the portion fitted to the driving base 140 may have a variable length L1. The first roller R1, the first reduction gear RG1, and the first motor M1 are fixed to and supported by the drive base 140, and the second roller R2, the second reduction gear RG2, and the second Since the motor M2 is fixedly supported on a portion of the driving support 120 that is not fitted to the driving base 140, the length L1 of the fitted portion is variable, so that between the first roller R1 and the second roller R2. The spacing of can be varied.

In one embodiment, the driving support 120 may be displaced by the actuator 130 coupled to the driving support 120. The actuator 130 may include a ratchet wheel and a handle bar. When the screws 170 and 160 are rotated using a handle bar, rotational power is transmitted only when rotating in a clockwise/counterclockwise direction by the operation of a ratchet wheel, and when rotating in a counterclockwise direction/clockwise direction, the ratchet Power may not be transmitted by the wheels. Devices such as freewheel and sprag clutch may be used, and any device that can transmit power by rotation in only one direction may be used, and is limited to the above-described embodiments. It doesn't work.

In one embodiment, the handle bar may include a spanner capable of transmitting power by rotation, a socket wrench, and a rubber handle bar. In another embodiment, the screw 170 may be rotated by transmission of the rotational force by the motor, and the motor is driven by pressing a button, starting from a distance greater than the cable and automatically approaching the distance to the distance contacting the cable. Exemplary methods such as method may be applied.

만큼 회전하게 된다. 이에 따라, 상기 축바퀴와 래칫 바퀴의 반지름의 비를 조절함으로써 아주 미세한 크기까지의 상기 이격 거리의 제어가 가능하다. 또 다른 실시예에서, 상기 미세 조절 장치에 별도의 손잡이 바가 연결될 수 있다.In another embodiment, the driver 130 may further include a fine adjustment device (not shown). The fine adjustment device may include at least one shaft wheel. After the separation distance between the first rotation shaft RS1 and the second rotation shaft RS2 is primarily controlled by the ratchet wheel, detailed adjustment may be performed secondary by a fine adjustment device. For example, if the fine adjustment device includes an axle wheel having a smaller radius (r2) than the radius (r1) of the ratchet wheel, if the axle wheel is rotated by d, the ratchet wheel is

It will rotate as much. Accordingly, it is possible to control the separation distance to a very fine size by adjusting the ratio of the radius of the shaft wheel and the ratchet wheel. In another embodiment, a separate handle bar may be connected to the fine adjustment device.

In one embodiment, a lubricant may be provided between the drive base 140 and the drive support 120. This is to facilitate displacement of the driving support 120 with respect to the driving base 140. In another embodiment, a fine roller device may be installed between the driving base 140 and the driving support 120. The fine roller device is composed of a plurality of thin rollers having a rotation axis perpendicular to the displacement direction of the driving support 120, and the driving support 120 can be easily moved by the rotation of the fine roller device.

In another embodiment, a fixture (not shown) positioned between the driving base 140 and the driving support 120 may be provided. It is possible to prevent the drive support 120 from moving arbitrarily by the position fixing tool. For example, the position fixing tool may include a ratchet device, and is composed of a groove and a locking hole, and the groove and the locking hole are coupled by adjusting the position of the driving support 120 up and down or rotating the driving support 120 It may be separated or separated to determine whether or not the driving support 120 and the driving base 140 are coupled.

9 is a perspective view of a power cable puller 10 according to an embodiment of the present invention.

Referring to FIG. 9, in an embodiment, a first driving shaft DRS1 of a first motor M1 and a second driving shaft DRS2 of a second motor M2 may be parallel to each other. When the drive shaft of the first motor M1 and the drive shaft of the second motor M2 are parallel, the drive support 120 may have a rectangular parallelepiped shape, and the rectangular parallelepiped shape is easy to standardize according to various types of cables. In addition, there is an advantage that efficient production is possible at low cost. In addition, in manufacturing industries such as shipbuilding, construction, and plant processes, various types of cables must be laid, and they are laid in various shapes of curves and straight lines, and are used for cable laying work involving changes in elevation to the ground, ground or underground. For this, a cable puller that is easy to install and remove and that can be used for various cables is required. In this case, it is possible to provide a cable puller optimized for cable laying work by applying a rectangular parallelepiped shape.

In another embodiment, the frame support may further include an angle adjustment unit (not shown). The angle adjustment unit may control an angle formed by the driving support 120 and the driving base 140 with the horizontal plane, and by controlling the angle, a first connected to the driving support 120 and the driving base 140 in a vertical direction. The angle formed by the rotation shaft RS1 and the second rotation shaft RS2 with the horizontal plane may be controlled. For example, the angle adjustment unit may include a first base frame fixed to the frame body 100 and a driving support 120, a driver 130 and a second base frame supporting the driving base 140. In addition, the first base frame and the second base frame may be hinged, and the hinge may include a hinge pin. In addition, the angle adjustment unit adjusts an angle connected to a predetermined position of the first base frame and a position corresponding to the predetermined position of the second base frame in order to adjust the angle formed by the first base frame and the second base frame. May include links. By freely controlling the angles between the first and second rotational shafts RS1 and RS2 with the horizontal plane by the angle adjusting part, the wire supply path of the power cable puller 10 can be adjusted in the vertical direction. Accordingly, it is possible to easily set a path in the electric wire installation work performed in a place with a difference in altitude, such as underground or above-ground inter-floor installation.

In one embodiment, the first friction ball FR1 and the second friction ball FR2 may have a convex axial cross-sectional shape. For example, when the first friction ball FR1 and the second friction ball FR2 are cut along the rotation axis, the cut section may form a convex parabolic shape. In another embodiment, in order to minimize power loss transmitted to the cable when the cable is moved in a forward or reverse direction by being in close contact between the first friction ball FR1 and the second friction ball FR2, the first friction ball ( A groove or protrusion in a vertical direction may be formed on the surfaces of FR1) and the second friction ball FR2. Efficient cable installation is possible by concentrating power transmission in a forward or reverse direction in a narrow area by the grooves or protrusions. In another embodiment, a guider that is horizontal to the direction in which the cable is laid may be formed at a portion where the cable is inserted. For example, by forming protrusions horizontal to the direction of installation of the cable in the lower or upper and lower portions of the cable contact, the cable is placed between the first friction ball FR1 and the second friction ball FR2. Can be prevented from leaving.

In one embodiment, the first friction ball FR1 and the second friction ball FR2 may include ceramic, rubber, or synthetic resin. In the case of using ceramics or synthetic resins, in order to increase the frictional force with the cable sheath made of rubber, rubber packing may be added to the contact portion of the cable to increase the frictional force. In addition, when the first friction ball FR1 and the second friction ball FR2 contain rubber and have high ductility, a portion in close contact with the cable is deformed by an external force by the cable to surround the cable, and the contact area This increase can reduce the loss of power transmission to the cable.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and that various substitutions, modifications, and changes are possible within the scope of the technical spirit of the present invention. It will be obvious to those who have knowledge.

10: power cable puller
R1: first roller
R2: second roller
FR1: first friction ball
FR2: second friction ball
RS1: 1st rotation axis
RS2: 2nd rotating shaft
M1: first motor
M2: 2nd motor
DRS1: 1st drive shaft
DRS2: 2nd drive shaft
MG1: first motor gear
MG2: second motor gear
RG1: first reduction gear
RG2: second reduction gear
OUT1: first output gear
OUT2: second output gear
RG: ring gear
SG: sun gear
PG: planetary gear
CR: carrier
CRX: carrier axis
CLG: clutch gear
OUTS: output shaft
150: synchronization module
151: first detection unit
152: second detection unit
153: first driving circuit
154: second driving circuit
155: synchronization control section
160: overload control module
161: motor detection unit
162: overload control unit
163: reduction gear module
164: alarm unit
165: allowable range setting unit
166: storage
100: frame body
120: drive support
130: actuator
140: drive base
P: opening
170: screw
171: screw fastening member

Claims (13)

A first motor having a first drive shaft rotating at a predetermined rotational speed and a first motor gear coupled to an end of the first drive shaft;
A second motor having a second drive shaft rotating at a predetermined rotational speed and a second motor gear coupled to an end of the second drive shaft;
A first driven gear engaged with the first motor gear and a first driven gear engaged and fixed with one surface of the first driven gear and rotating the first rotation shaft at a reduced rotation speed by decelerating the rotation speed of the first drive shaft A first reduction gear consisting of a gear;
A second driven gear engaged with the second motor gear and a second driven gear engaged with one surface of the second driven gear and fixed to rotate the second rotation shaft at the reduced rotation speed by decelerating the rotation speed of the second drive shaft A second reduction gear consisting of a gear;
The first rotation shaft, a first output gear coupled to an end of the first rotation shaft and engaged with the first driving gear, and a first friction ball fixed to the first rotation shaft and rotated together and surrounding the first rotation shaft. 1 roller; And
The second rotation shaft parallel to the first rotation shaft, a second output gear coupled to an end of the second rotation shaft and engaged with the second driving gear and fixed to the second rotation shaft to rotate together and surround the second rotation shaft. It has a second friction ball, and includes a second roller arranged to be able to adjust the distance with respect to the first roller,
The first motor gear and the first driven gear or the second motor gear and the second driven gear have bevel gear engagement,
The first output gear and the first prime mover or the second output gear and the second prime mover have spur gear engagement,
The torque of the first output gear is proportional to the gear groove of the first driven gear and inversely proportional to the gear groove of the first driving gear,
The torque of the second output gear is proportional to the gear groove of the second driven gear and inversely proportional to the gear groove of the second driving gear power cable puller. The method of claim 1,
_{The torque (T 2} ) of the first or second output gear is a power cable puller defined by the following <Equation 1>.
[Equation 1]

T ₁ is a torque of the first or second motor gear, Z ₀ is a gear groove of the first or second motor gear, Z ₁ is a gear groove of the first or second driven gear, Z ₂ is a gear groove of _{the first or second motive gear, and Z 3} is a gear groove of the first or second output gear. The method of claim 1,
A power cable puller having a reduction ratio of the first reduction gear or the second reduction gear in the range of 2:1 to 10:1. A first motor having a first drive shaft rotating at a predetermined rotational speed;
A second motor having a second drive shaft rotating at a predetermined rotational speed;
A first flow gear device coupled to an end of the first drive shaft and a first output coupled to the first flow gear device to rotate the first rotation shaft at the reduced rotation speed by decelerating the rotation speed of the first drive shaft A first reduction gear consisting of a gear;
The second rotational shaft is rotated at the reduced rotational speed by decelerating the rotational speed of the second drive shaft, and a second flow gear device coupled to an end of the second drive shaft and a second output coupled to the second flow gear device A second reduction gear consisting of a gear;
The first rotation shaft, a third output gear coupled to an end of the first rotation shaft and engaged with the first output gear and a bevel gear, and a first friction ball fixed to the first rotation shaft and rotated together to surround the first rotation shaft. Having a first roller; And
The second rotation shaft parallel to the first rotation shaft, a fourth output gear coupled to an end of the second rotation shaft and engaged with the second output gear and a bevel gear, and the second rotation shaft fixed to the second rotation shaft to rotate together and the second rotation shaft It has a second friction ball surrounding the, and includes a second roller arranged to be able to adjust the distance for the first roller,
When the first flow gear device or the second flow gear device is composed of a sun gear, a ring gear, and a carrier, the reduction ratio of the first reduction gear or the second reduction gear is determined by the following <Equation 2> to <Equation 2> Power cable puller to satisfy 4>.
[Equation 2]

[Equation 3]

[Equation 4]

Z _s is the gear groove of the sun gear, Z _r is the gear groove of the ring gear, N _s is the rotation speed of the sun gear, N _r is the rotation speed of the ring gear, and N _c is the rotation of the carrier. Mandate. The method of claim 1,
A power cable puller in which the rotation of the first motor and the rotation of the second motor are synchronized with each other. The method of claim 5,
The power cable puller,
Further comprising a synchronization module connected to the first motor and the second motor,
The synchronization module is a power cable puller for synchronizing rotations of the first motor and the second motor by frequency-controlled driving the first motor and the second motor. A first motor having a first drive shaft rotating at a predetermined rotational speed;
A second motor having a second drive shaft rotating at a predetermined rotational speed;
A first reduction gear that decelerates the rotational speed of the first drive shaft to rotate the first rotational shaft at a reduced rotational speed;
A second reduction gear that decelerates the rotation speed of the second drive shaft to rotate the second rotation shaft at a reduced rotation speed;
A first roller that is fixed to the first rotation shaft and the first rotation shaft, rotates together, and has a first friction ball surrounding the first rotation shaft; And
A second rotation shaft parallel to the first rotation shaft and a second friction ball fixed to the second rotation shaft and rotated together and surrounding the second rotation shaft, and arranged to allow adjustment of the distance with respect to the first roller In the power cable puller comprising a roller,
The power cable puller further includes an overload control module,
The overload control module,
A motor detector configured to detect operation information of the first motor or the second motor;
An allowable range setting unit for setting an allowable range of the motion information;
An overload control unit that compares the operation information and the allowable range to determine whether the overload is transmitted by the first motor or the second motor, and sets a reduction ratio for removing the overload; And
A power cable puller comprising a reduction gear module configured to control a reduction ratio of the first reduction gear or the second reduction gear according to the reduction ratio obtained from the overload control unit. The method of claim 1,
The first roller, the first reduction gear, and the first motor are fixedly supported, and the second roller, the second reduction gear, and the second motor are used to adjust the distance between the second roller and the first roller. Power cable puller further comprising a frame support for supporting the displaceable. The method of claim 8,
The frame support,
A frame body exposing the first roller and the second roller to the outside and having an opening opening in a displacement direction so that the second rotation axis of the second roller is displaced for adjusting the distance;
A driving support slidably coupled to the frame body to fix and displace the second roller and the second motor together; And
A power cable puller including a driver coupled to the drive support to displace the drive support. The method of claim 9,
The first reduction gear and the second reduction gear are a power cable puller accommodated in the frame body. The method of claim 9,
The driver is a power cable puller including a ratchet wheel rotatably coupled to the frame body and a handle bar coupled to the ratchet wheel. The method of claim 1,
The first friction ball and the second friction ball is a power cable puller having a convex axial cross-sectional shape. A first motor having a first drive shaft rotating at a predetermined rotational speed and a first motor gear coupled to an end of the first drive shaft;
A second motor having a second drive shaft rotating at a predetermined rotational speed and a second motor gear coupled to an end of the second drive shaft;
A first spur gear meshed with the first motor gear, spaced apart so as not to rotate relative to each other with the first spur gear so as to reduce the rotation speed of the first drive shaft to rotate the first rotation shaft at a reduced rotation speed A second spur gear coupled and fixed, a third spur gear meshed with the second spur gear, a first clutch gear fixedly coupled to one surface of the third spur gear, and a first clutch gear that is spaced apart from and fixed to the first clutch gear A first reduction gear consisting of one output gear;
A fourth spur gear meshed with the second motor gear and spaced apart so as not to rotate relative to each other so as to reduce the rotation speed of the second drive shaft to rotate the second rotation shaft at a reduced rotation speed. A fifth spur gear coupled and fixed, a sixth spur gear meshed with the fifth spur gear, a second clutch gear fixedly coupled to one surface of the sixth spur gear, and a second clutch gear that is spaced apart from and fixed to the second clutch gear A second reduction gear consisting of two output gears;
The first rotation shaft, a second output gear coupled to an end of the first rotation shaft and engaged with the first output gear and a bevel gear, and a first friction ball fixed to the first rotation shaft and rotated together to surround the first rotation shaft. Having a first roller; And
The second rotation shaft parallel to the first rotation shaft, a fourth output gear coupled to an end of the second rotation shaft and engaged with the third output gear and a bevel gear, and the second rotation shaft fixed to the second rotation shaft to rotate together and the second rotation shaft It has a second friction ball surrounding the, and includes a second roller arranged to be able to adjust the distance for the first roller,
Said first output gear and wherein the output torque of the third output gear (T ₂₎ or an output torque of the second output gear and said second output gear (T ₂₎ is to the power being defined as [Equation 5] cable puller .
[Equation 5]

Here, T ₁ is a motor torque of the first motor gear, Z ₀ is a gear groove of the first or second motor gear, Z ₄ is a gear groove of the first or fourth spur gear, Z ₅ is a gear groove of the second or fifth spur gear, and Z ₃ is a gear groove of the third or sixth spur gear.

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