A multifunctional cable laying device and its application

Abstract

The present invention discloses a multifunctional cable laying device and application, which relates to the technical field of cable laying equipment, and comprises: a bracket and a rotating shaft installed on the bracket, two rotating arms are installed with the rotating shaft as the rotation center, an active roller with a built-in first servo motor is installed at the rotating shaft position, and the axis of the active roller is parallel to the axis of the rotating shaft; guide pulleys with axes parallel to the active rollers are installed at the ends of the two rotating arms; and a plurality of mounting holes are arranged on the rotating arms.

Description

Technical Field

[0001] The present invention relates to the technical field of cable laying equipment, and in particular to a multifunctional cable laying device and its application. Background Art

[0002] A cable is usually a rope-like cable formed by stranding several or several groups of wires (at least two wires in each group). The wires in each group are insulated from each other and are often twisted around a central wire, and the whole is covered with a highly insulating covering layer. A cable mainly consists of a conductive wire core, an insulating layer, a sealing sheath, and a protective covering layer. During the cable laying process, some right-angle corner obstacles will be encountered, and some cables with larger specifications are not easy to bend and are likely to come into contact with positions such as the corner of a wall, causing damage to the cable insulation protective layer. At present, there is no special device to solve this problem, and the common method is only to install pulleys at the corner position for guidance. However, this method is likely to generate uneven forces on the cable, causing the insulation layer to break. Summary of the Invention

[0003] The purpose of the present invention is to provide a multifunctional cable laying device and its application to solve the problem of inconvenient guidance when laying cables at corners, and at the same time, it has multiple functions.

[0004] To solve the above problems, one aspect of the present invention provides a multifunctional cable laying device, including: a bracket and a rotating shaft installed on the bracket. Two rotating arms are installed with the rotating shaft as the rotation center. A driving roller with a built-in first servo motor is installed at the position of the rotating shaft, and the axis of the driving roller is parallel to the axis of the rotating shaft; guiding pulleys with axes parallel to the driving roller are installed on both rotating arms; a number of mounting holes are provided on the rotating arms. Bearings can be installed on the rotating shaft to make the rotation of the two rotating arms easier. By adjusting the relative positions of the two rotating arms, the requirements for different bending angles during the laying of high-voltage cables can be met. The driving roller is installed with a built-in first servo motor to provide the power for rotation, so that the high-voltage cable can be assisted by the tangential force provided by the driving roller when turning, making the high-voltage cable more stable during non-linear laying. The guiding pulleys installed on the two rotating arms can play a guiding role at the corner when laying the high-voltage cable. When laying the cable, the cable first passes through the guiding pulley installed on one rotating arm, then through the driving roller, and finally passes through the guiding roller on the other rotating arm to pass through the multifunctional cable laying device. The provision of mounting holes on the rotating arms can facilitate the installation of the multifunctional cable laying device at the construction site. For example, the multifunctional cable laying device can be directly installed on the wall or the well wall of the high-voltage cable laying route, reducing the use of auxiliary devices such as scaffolding.

[0005] A further technical solution is that a second servo motor and a third servo motor are respectively installed on the two guiding pulleys; the first, second and third servo motors are all built-in motors with a power of 400 - 500W. Installing servo motors on the guiding pulleys as supplementary power for the high-voltage cable to pass through the corner can appropriately reduce the traction force exerted by the tractor on the high-voltage cable during cable laying, effectively reducing the damage to the high-voltage cable caused by excessive traction force. The power of the three servo motors being between 400W and 400W can provide sufficient supplementary power for the high-voltage cable to pass through the corner position, and when the power of the servo motor is within this range, its volume is small and convenient for installation. When the power of the servo motor is large, it may not be able to be installed in locations such as underground due to its large volume.

[0006] A further technical solution is that PWM speed regulation modules are installed on the first, second and third servo motors, and the PWM speed regulation modules are connected to a control device through wires. The full name of pulse width modulation is: Pulse Width Modulator, abbreviated as PWM. Due to its special performance, it is often used in DC load circuits, lamp dimming or DC motor speed regulation. The HW-1020 type speed regulator is a motor speed regulator and PWM speed regulator made using the pulse width modulation (PWM) principle. Installing the PWM speed regulation module can synchronize the rotation speeds of the first, second and third servo motors, preventing the cable from slipping or excessive internal stress caused by different speeds of each section of the high-voltage cable at the corner. The control device can be a programmable logic controller (PLC), a digital operation controller with a microprocessor for automatic control, which can load control instructions into memory for storage and execution at any time. The programmable controller consists of functional units such as CPU, instruction and data memory, input / output interface, power supply, digital-to-analog conversion, etc. By writing the speed control program into the PLC to control the PWM speed regulator, the speeds of the servo motors can be unified.

[0007] A further technical solution is that the rotating arm is a curved arm. Among them, the rotating arm is preferably an arc-shaped curved arm and can be made of square steel. The curved arm is easier to adjust its shape to adapt to more cable laying environments compared to a straight-line rotating arm.

[0008] A further technical solution is that an electric telescopic strut is installed between the two rotating arms. The two ends of the electric telescopic strut are respectively installed on the two rotating arms, and the angle between the two rotating arms is adjusted by the telescopic movement of the electric telescopic strut. The electric telescopic strut can be driven by air pressure or hydraulic pressure, or can also be an electric push rod driven by an electric motor. Two electric telescopic struts can be installed on the two curved rotating arms, and the electric telescopic strut can be installed on the rotating arm through a rotating pair. The electric telescopic strut can be easily installed and disassembled by bolts.

[0009] A further technical solution is that the distance between the guide pulleys on the two rotating arms and the driving roller is 50 - 80 cm. Angle scales are provided on the electric telescopic strut of the annular support plate, which can facilitate the staff to adjust the angle between the two rotating arms. The length of the rotating arm can be 50, 55, 60, 65, 70, 75, 80 cm, preferably 60 - 70 cm. Including but not limited to the above examples, when the length of the rotating arm is within this range, it can meet the installation of high-voltage cables at the corner position and can also be easily installed in a position with a small space.

[0010] A further technical solution is that it also includes several support guide wheels that can be installed on the multi-functional cable laying device through mounting holes, and a connecting rod for detachably connecting the two multi-functional cable laying devices. The support guide wheel can be directly installed on the rotating arm through the mounting hole, which can further support the high-voltage cable when needed, or make the high-voltage cable transition more smoothly when the corner is relatively small. The connecting rod can connect the two multi-functional cable laying devices, and the simultaneous use of the two multi-functional cable laying devices in cooperation can provide greater power for the high-voltage cable to pass through the corner for supplementation.

[0011] Another aspect of the present invention provides an application of the above multi-functional cable laying device, which is specifically as follows: When laying high-voltage cables, adjust and fix the angles of the two rotating arms of the multi-functional cable laying device, and then install it at the corner of the high-voltage cable laying through the mounting holes on the rotating arm to assist the high-voltage cable in laying at the corner. Two or more multi-functional cable laying devices can also be used simultaneously and the angles of the rotating arms of each multi-functional cable laying device can be adjusted to assist in laying the high-voltage cable at the corner. Because the driving roller is equipped with a servo motor that can provide power along the tangential direction of the corner, it makes it easier for the high-voltage cable to pass through the corner, the included angle between the resultant force at the corner point along the movement direction is smaller, and the internal stress is smaller.

[0012] Another aspect of the present invention provides another application of the above-mentioned multifunctional cable laying device, and the application is as follows: When laying high-voltage cables, adjust the angles of the two rotating arms of the two multifunctional cable laying devices to 180 degrees, and then install the two multifunctional cable laying devices opposite to each other to straighten the high-voltage cables. During the production and storage of cables, mechanical stress caused by external forces will cause the cables to bend. According to the installation process requirements of cable joints and the requirements for the long-term stable operation of cables, the mechanical stress of the cable body must be eliminated before installing cable joint accessories to ensure that the intermediate joint and the cables adjacent to both ends of the joint are in a straight line. If the cable is bent, it will not only cause large deviations in the cable processing dimensions during the installation of accessories, unable to meet the process requirements of joint installation, but in severe cases, the bending of the cable will cause an air gap between the cable body and the stress cone, and the electric field strength that the air gap position can withstand will be significantly reduced, becoming an obvious weak point of the cable joint, and the probability of breakdown and explosion will increase. Among them, in cable terminals and joints, an insulating tape is wound from the edge of the metal sheath to form a transition conical surface between the edge of the metal sheath and the outer surface of the additional insulation, and this conical surface is called a stress cone. The function of the stress cone is to improve the electric field distribution at the end of the metal sheath and reduce the electric field strength at the edge of the metal sheath. Adjust the angles of the two rotating arms of the multifunctional cable laying device in this embodiment to 180 degrees, that is, in a vertical state, and then install the two multifunctional cable laying devices in this state opposite to each other, so that the driving rollers and guiding pulleys of the two multifunctional cable laying devices are in opposite positions. When laying high-voltage cables, the high-voltage cables pass through between the driving rollers and guiding pulleys of the two multifunctional cable laying devices and are squeezed by the driving rollers and guiding pulleys, so that the high-voltage cables are straightened.

[0013] Principle description of the present invention: The driving roller is arranged at the position of the rotating shaft and provides the power of rotation through the first servo motor, which can enable the high-voltage cable to receive the assistance of the tangential force provided by the driving roller when turning, making the high-voltage cable more stable during non-linear laying, with a smaller included angle between the resultant force at the turning point along the moving direction and smaller internal stress. The guiding pulleys installed at the ends of the two rotating arms can guide the laying of high-voltage cables. The mounting holes on the rotating arms can facilitate the installation of the multifunctional cable laying device at the construction site. For example, the multifunctional cable laying device can be directly installed on the wall or the well wall of the high-voltage cable laying route, reducing the use of auxiliary devices such as scaffolding. Using a servo motor with a smaller power can reduce the volume and is easier to install in a smaller space such as a cable well.

[0014] The above technical solutions of the present invention have the following beneficial technical effects: It plays a role in preventing high-voltage cables from being damaged during the laying of high-voltage cables. It can adjust the angle of the rotating arm to meet the requirements of various angles during the laying of high-voltage cables. It can straighten the high-voltage cables, prevent the generation of air gaps between the cable body and the stress cone, and reduce the probability of breakdown and explosion. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram according to Embodiment 1 of the present invention;

[0016] Figure 2 is a schematic structural diagram according to Embodiment 2 of the present invention;

[0017] Figure 3 is a diagram of the usage state according to Embodiment 2 of the present invention;

[0018] Figure 4 is a schematic diagram of the cable laying application according to Embodiment 2 of the present invention;

[0019] Figure 5 is a schematic diagram of the cable laying application according to Embodiment 2 of the present invention;

[0020] Figure 6 is a schematic diagram of the cable straightening application according to Embodiment 2 of the present invention.

[0021] Reference numerals: 1: bracket; 2: rotating arm; 3: driving roller; 4: guiding pulley; 5: mounting hole; 6: electric telescopic strut; 9: high-voltage cable; 11: rotating shaft. Detailed Embodiments

[0022] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0023] Embodiment 1

[0024] As Figure 1 shown, a multifunctional cable laying device includes: a bracket 1 and a rotating shaft 11 installed on the bracket 1. Two rotating arms 2 are installed with the rotating shaft 11 as the rotation center. A driving roller 3 is installed at the position of the rotating shaft 11 and a first servo motor is built in. The axis of the driving wheel is parallel to the axis of the rotating shaft 11; guiding pulleys 4 with axes parallel to the driving roller 3 are installed at the ends of both rotating arms 2; a plurality of mounting holes 5 are provided on the rotating arms 2. When laying cables at the corner position, first, adjust the angle between the two rotating arms 2 of the multifunctional cable laying device provided in this embodiment. Then, install it at the corner position of the preset laying line through the mounting holes 5 on the rotating arms 2. When installing, fasteners such as expansion screws can be used to directly install on positions such as walls, and auxiliary tools such as scaffolding are not required. The bypass method of the cable passing through the multifunctional cable laying device during cable laying can be as Figure 2 shown.

[0025] Example 2

[0026] As Figure 3 shown, an improvement to the multifunctional cable laying device based on Example 1 is as follows: A second servo motor and a third servo motor are respectively installed on two guiding pulleys 4; The first, second, and third servo motors are all built-in motors, and their power is 400W each. Each servo motor is also equipped with a control device of a PWM speed regulation module, and the control device is electrically connected to the first, second, and third servo motors. The rotating arm 2 is bent, and an electric telescopic strut 6 is installed between the two rotating arms 2. The two ends of the electric telescopic strut 6 are respectively installed on the two rotating arms 2, and the electric telescopic strut 6 realizes expansion and contraction through hydraulic pressure to adjust the angle between the two rotating arms 2. The distance between the guiding pulley 4 on the two rotating arms 2 and the driving roller 3 is 70 cm.

[0027] The multifunctional cable laying device provided in this Example 1 is used as a corner device during cable laying. By adjusting the electric telescopic strut 6, high-voltage cables, as Figure 3 shown, pass through the two guiding pulleys 4 and are clamped by the driving roller 3, which can prevent the high-voltage cables from slipping off. Among them, the servo motors respectively installed on the two guiding pulleys 4 can provide auxiliary power for the laying of high-voltage cables and improve the internal stress of the high-voltage cables.

[0028] As Figure 4 and Figure 5 shown, it is the combined application of the multifunctional cable laying device of the present invention, and two multifunctional cable laying devices are used in cooperation when the high-voltage cable is laid through a corner position. Specifically: When laying the high-voltage cable, the angle between the rotating arms 2 of the two multifunctional cable laying devices is adjusted and fixed through the electric telescopic strut 6, and then it is installed at the corner of the preset high-voltage cable laying line through the mounting holes 5 on the rotating arms 2. As shown in the figure, the positions of the driving rollers 3 and the guiding pulleys 4 of the two multifunctional cable laying devices correspond to each other so that the cable can pass between the driving rollers 3 and the guiding pulleys 4 of the two multifunctional cable laying devices during laying. Using two or more multifunctional cable laying devices to guide the cable laying at the corner position can adapt to more variable laying environments, and the driving rollers 3 and the guiding pulleys 4 can also provide additional power during laying.

[0029] As Figure 6 shown, it is the application of the multifunctional cable laying device of the present invention in cable straightening. The specific application is as follows: When laying the high-voltage cable, it is necessary to straighten the cable. Adjust the angles of the two rotating arms 2 of the two multifunctional cable laying devices, and then as Figure 6As shown, two multifunctional cable laying devices are installed, and the high-voltage cable is straightened by passing the cable between each pair of driving rollers 3 and guiding pulleys 4. Multiple pairs of multifunctional cable laying devices can also be connected in series to straighten the high-voltage cable.

[0030] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A multifunctional cable laying device, characterized in that: include: A bracket (1) and a rotating shaft (11) mounted on the bracket (1); two rotating arms (2) are mounted with the rotating shaft (11) as the rotation center; a driving roller (3) having a built-in first servo motor is mounted at the rotating shaft (11); the axis of the driving roller (3) is parallel to the axis of the rotating shaft (11); guide pulleys (4) whose axes are parallel to the driving roller (3) are mounted on the two rotating arms (2); and a plurality of mounting holes (5) are provided on the rotating arms (2); The rotating arm (2) is a curved arm; the guide pulley is mounted at the end of the rotating arm, and the curved convex parts of the rotating arm (2) are located on the same side, and the angles of the two rotating arms can be adjusted to 180 degrees; an electric telescopic support rod (6) is mounted between the two rotating arms (2), and the two ends of the electric telescopic support rod (6) are respectively mounted on the two rotating arms (2), and the angle between the two rotating arms (2) is adjusted by telescoping the electric telescopic support rod (6); when laying high-voltage cables, the angles of the two rotating arms (2) of the two multifunctional cable laying devices are adjusted to 180 degrees, and then the two multifunctional cable laying devices are installed relative to each other to straighten the high-voltage cables.

2. The multifunctional cable laying device according to claim 1, characterized in that: A second servo motor and a third servo motor are respectively mounted on the two guide pulleys (4); the first, second and third servo motors are all built-in motors, and their power is 400-500W.

3. The multifunctional cable laying device according to claim 2, characterized in that: The first, second and third servo motors are all equipped with PWM speed regulation modules, and the PWM speed regulation modules are connected to the control device through wires.

4. The multifunctional cable laying device according to claim 1, characterized in that: The distance between the guide pulleys (4) on the two rotating arms (2) and the active roller (3) is 50 to 80 cm.

5. The multifunctional cable laying device according to claim 1, characterized in that: It also includes a plurality of support guide wheels that can be mounted on the multifunctional cable laying device through the mounting holes (5); and a connecting rod that detachably connects two multifunctional cable laying devices.

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