Self-adaptive adjustment high-voltage cable joint automatic lead coating device

Abstract

The invention discloses a self-adaptive adjustment high-voltage cable joint automatic lead coating device, and relates to the technical field of cable construction. The device comprises an opening gear box and a cable clamping device, included angle adjusting mechanisms (including a bent arm motor, a multi-stage bent arm and a back plate fixing arm) are hinged to the two sides of the cable clamping device, and a distance adjusting mechanism (including a distance adjusting motor, a screw rod and a rotating seat) is hinged to the top of the cable clamping device. By adjusting the included angle and the linear distance of the open gear box, cable bending is adapted, it is ensured that the lead coating mechanical arm always rotates around the axis of the cable and keeps a constant distance with the outer wall, the problem that the lead coating thickness on the bent cable is not uniform in a traditional mode is solved, and the construction quality and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable lead lining technology, and is suitable for non-straight high-voltage cable joints, in particular to an automatic lead lining device for high-voltage cable joints with adaptive adjustment. BACKGROUND

[0002] During the connection of high-voltage cables, a lead seal joint needs to be made between the prefabricated joint and the outer aluminum sheath of the cable, which is called a lead lining joint. The traditional working method of lead lining joint is to melt lead-tin alloy material by flame, and the worker wears heatproof gloves to apply the molten lead to the prefabricated joint and the outer aluminum sheath of the cable. The melting temperature of the lead is between 180° and 280°, which is relatively high, and the worker needs to keep a high degree of attention in real time to avoid burns and deviations in the quality of lead lining, which may lead to accidents. The use of gas fire to melt and heat the aluminum sheath, prefabricated joint and lead on site has a high risk coefficient and unstable lead lining quality.

[0003] The applicant's previous research results have achieved mechanical automation construction of automatic lead lining of cable joints. CN119314742A discloses a high-voltage cable accessory and cable corrugated aluminum sheath automatic lead lining machine and lead lining process, which relates to a high-voltage cable accessory and cable corrugated aluminum sheath automatic lead lining machine, including a fixed unit, a rotating positioning unit, a work system and a control module. The work system is installed on the rotating positioning unit, and the rotating positioning unit is installed on the fixed unit. The fixed unit fixes and clamps the cable. The fixed unit, rotating positioning unit and work system are controlled by the control module to perform lead lining on the high-voltage cable accessory and cable corrugated aluminum sheath, which can improve the quality and efficiency of lead lining and realize automatic operation of the lead lining process. The invention also provides a lead lining process using the high-voltage cable accessory and cable corrugated aluminum sheath automatic lead lining machine, which is simple to operate and overcomes the defects of low efficiency of manual lead lining of high-voltage cable accessories and cable corrugated aluminum sheath. In addition, the level of cable accessory installation personnel is uneven and the process is affected by the on-site working environment, which leads to poor lead lining and causes safety accidents.

[0004] Although the above-mentioned invention has achieved mechanical automation construction of automatic lead lining of cable joints, there are still problems in actual application. During cable maintenance and joint connection construction at the construction site, the cable main body is buried below the ground, and only the joint part is exposed to the outside. In this construction environment, it is difficult to ensure that the lead lining joint part and the root of the cable exposed to the ground or the newly connected cable are coaxial, that is, it is difficult to ensure that the cable and the cable joint are in a straight line. When the open gear box moves axially on the cable with the cable clamping device as the fixed basis, the distance between the lead lining robot and the outer wall of the cable joint cannot be uniform, resulting in different thickness differences at the same lead lining part, which seriously limits the lead lining construction quality.

[0005] In summary, how to solve the problem of lead lining positioning of the lead lining device on the curved cable, ensure that the manipulator always rotates around the cable axis as the center when lining lead around the cable, and ensure the uniformity of the distance between the manipulator and the outer wall of the cable joint, has become a technical problem to be solved by the personnel in the field. SUMMARY

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide an adaptive high-voltage cable joint automatic lead lining device, which can effectively solve the problem that the distance between the lead lining manipulator and the outer wall of the cable joint cannot be uniform under the bending construction environment of the cable, resulting in uneven thickness of the lead lining. By adaptively adjusting the included angle and distance between the open gear box and the cable clamping device, it is ensured that the manipulator always rotates around the cable axis as the center, and the construction quality of the lead lining is stable and reliable.

[0007] In order to solve the above problems, the present application provides an adaptive high-voltage cable joint automatic lead lining device, comprising an open gear box and a cable clamping device, wherein the open gear box is radially buckled on the cable, and the open gear box supports the lead lining manipulator in circumferential rotation; wherein the cable clamping device is radially clamped on the circumferential outer wall of the cable, and the cable clamping device provides mutual parallel distance adjustment power and translation guide for the open gear box; The cable clamping device also provides mutual included angle distance adjustment power and included angle adjustment support for the open gear box; the two sides of the cable clamping device are hingedly connected with an included angle adjustment mechanism, and the top of the cable clamping device is hingedly supported with a distance adjustment mechanism; the force output end of the included angle adjustment mechanism is hingedly connected with the two sides of the open gear box to adjust the included angle between the open gear box and the cable clamping device; the force output end of the distance adjustment mechanism is hingedly connected with the top of the open gear box to adjust the linear distance between the open gear box and the cable clamping device.

[0008] Preferably, the included angle adjustment mechanism is provided with two groups and symmetrically arranged on the two sides of the cable clamping device, and the included angle adjustment mechanism comprises a bending arm motor, a first bending arm, a second bending arm and a back plate fixed arm connected in sequence.

[0009] Preferably, the bending arm motor is fixed on the outer shell of the cable clamping device facing the open gear box, and the power output end of the bending arm motor is fixedly connected with the first bending arm and provides horizontal rotation power for the first bending arm.

[0010] Preferably, the free end of the first bending arm is hingedly connected with the second bending arm, and the first bending arm provides horizontal rotation and dragging power for the second bending arm; Preferably, the back plate fixed arm is fixedly connected to the back plate of the open gear box facing the cable clamping device, and the free end of the back plate fixed arm is hingedly connected with the second bending arm, and the second bending arm provides inclination adjustment power for the open gear box relative to the cable clamping device.

[0011] Preferably, the distance adjustment mechanism comprises a first rotating seat, a second rotating seat, a distance adjustment motor and a screw rod; the first rotating seat is horizontally rotatably connected to the top plane of the open gear box; the second rotating seat is horizontally rotatably connected to the top plane of the cable clamping device; the distance adjustment motor is fixedly arranged on the first rotating seat, and a power output end of the distance adjustment motor is coaxially fixedly connected with the screw rod; the screw rod penetrates through the second rotating seat and is threadedly connected with the inside of the second rotating seat.

[0012] Compared with the prior art, the self-adaptive high-voltage cable joint automatic lead lining device has the following advantages: The self-adaptive high-voltage cable joint automatic lead lining device can flexibly adapt to the bending state of the cable, automatically adjust the angle and position of the open gear box, and keep a constant distance between the lead lining mechanical arm and the outer wall of the cable joint during rotation, thereby effectively eliminating the thickness difference of the lead lining part and improving the sealing performance and uniformity.

[0013] The self-adaptive high-voltage cable joint automatic lead lining device realizes automatic lead lining operation in a complex construction site such as a cable root bending site, reduces the dependence on manual experience, reduces the risk of burns or quality accidents caused by improper operation, and improves construction safety.

[0014] The self-adaptive high-voltage cable joint automatic lead lining device has a reasonable structure, the included angle adjustment mechanism adopts multi-stage arm bending articulation, and the distance adjustment mechanism adopts screw rod transmission, so that the adjustment precision is high and the response is fast, and the stability and efficiency of the lead lining process are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Fig. 1 is a side view of the present application; Fig. 2 is a top view of the present application; In the drawings: 1 is a lead lining mechanical arm; 2 is an open gear box; 3 is a distance adjustment motor; 4 is a first rotating seat; 5 is a screw rod; 6 is a threaded sleeve; 7 is a second rotating seat; 8 is a cable clamping device; 9 is an arm bending motor; 10 is a first-stage arm; 11 is a second-stage arm; 12 is a back plate fixing arm. DETAILED DESCRIPTION

[0017] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explanation of the present application, and cannot be understood as a limitation of the present application.

[0018] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] The present application will be further described in detail below in conjunction with the drawings.

[0020] In conjunction with Figs. 1-2 , the present application is an adaptive adjustment of a high-voltage cable joint automatic lead lining device, comprising: Overall structure: the device includes an open gear box 2 and a cable clamping device 8. The open gear box 2 is radially buckled on the cable, and the inside is circumferentially supported to rotate the lead lining manipulator 1, which is used to perform the lead lining operation. The cable clamping device 8 is fixed to the outer wall of the cable through a radial clamping mechanism, which serves as the fixed support base of the entire device relative to the cable.

[0021] Angle adjustment mechanism: two sets of angle adjustment mechanisms are symmetrically hinged on both sides of the cable clamping device 8. Each set of mechanism includes a bending arm motor 9, a first bending arm 10, a second bending arm 11 and a back plate fixed arm 12. The bending arm motor 9 is fixed to the shell of the cable clamping device 8, and its output end is directly connected to the first bending arm 10 to drive the first bending arm to rotate horizontally; the free end of the first bending arm 10 is hinged with the second bending arm 11 to transmit the rotation and drag power; the other end of the second bending arm 11 is hinged with the back plate fixed arm 12, and the back plate fixed arm 12 is fixedly installed on the back plate of the open gear box 2. By controlling the forward and reverse rotation of the bending arm motor 9, the multi-stage bending arm can be driven to move, so as to adjust the inclination angle of the open gear box 2 relative to the cable clamping device 8, and adapt to the bending angle of the cable.

[0022] Spacing Adjustment Mechanism: A spacing adjustment mechanism is hinged to the top of the cable clamping device 8, comprising a first rotating seat 4, a second rotating seat 7, a spacing adjustment motor 3, and a screw 5. The first rotating seat 4 is horizontally rotatably connected to the top plane of the open gearbox 2 via bearings; the second rotating seat 7 is horizontally rotatably connected to the top plane of the cable clamping device 8 in a similar manner. The spacing adjustment motor 3 is fixed to the first rotating seat 4, and its output shaft is coaxially fixed to the screw 5; the screw 5 horizontally penetrates the threaded sleeve 6 provided inside the second rotating seat 7 and engages with it threadedly. When the spacing adjustment motor 3 is started, the screw 5 rotates, driving the linear distance between the first rotating seat 4 and the second rotating seat 7 to change through the threaded pair, thereby achieving precise adjustment of the spacing between the open gearbox 2 and the cable clamping device 8.

[0023] Collaborative operation: During installation, the cable clamping device 8 is first clamped and fixed at the designated position of the cable. Then, according to the cable bending situation, the tilt angle of the open gearbox 2 is adjusted by the angle adjustment mechanism to make the rotation plane of the lead-enamelting robot 1 perpendicular to the cable joint axis. Next, the straight-line distance is finely adjusted by the spacing adjustment mechanism to ensure that the distance between the robot 1 and the outer wall of the cable is consistent. Finally, the control system uniformly commands the actions of each motor to achieve automated lead enamelting.

[0024] The working principle of this invention is as follows: Initial positioning: The cable clamping device 8 is clamped and fixed on the cable, serving as a reference point. The open gearbox 2 is connected to the cable clamping device 8 via an angle adjustment mechanism and a spacing adjustment mechanism.

[0025] Angle Adaptation: When the cable bends, such as when the exposed root is not straight, the control system starts the two arm motors 9 according to sensor signals or preset programs. The arm motors 9 drive the first-stage arm 10 to rotate, which in turn drives the second-stage arm 11 to swing. Through the back plate fixing arm 12, the open gearbox 2 is pushed and pulled to adjust its angle around the cable axis until the rotation center of the lead-lined manipulator 1 coincides with the axis of the cable joint section.

[0026] Spacing calibration: Simultaneously, the spacing adjustment motor 3 operates, driving the screw 5 to rotate within the threaded sleeve 6. Since the screw 5 is fixed to the first rotating seat 4, and the threaded sleeve 6 is fixed to the second rotating seat 7, the rotation of the screw is converted into linear motion, pulling or pushing the open gearbox 2 to move, adjusting its spacing with the cable clamping device 8, ensuring that the robot arm 1 maintains a constant working distance from the outer wall of the cable during circumferential rotation.

[0027] Lead enamel coating process: After adjustment, the drive mechanism inside the open gearbox 2 drives the lead enamel coating robot 1 to rotate around the cable, while simultaneously applying lead. Because the robot's trajectory is coaxial with the cable axis and the spacing is uniform, the lead enamel joint thickness is ensured to be uniform and the quality is stable.

[0028] Finally, it needs to be pointed out that the core difference between the present application and CN119314742A is that in CN119314742A, the optical axis is used to guide the opposite / backward movement of the open gear box and the cable clamping device, at this time, it is assumed that the open gear box and the cable clamping device are in a mutual parallel posture with a 0° angle, while in the present application, the bending arm and the motor are used to provide the open gear box with a translational force.

[0029] In the present application, the functions of the two are just the opposite, the screw replaced by the optical axis and the interval adjusting motor provide the open gear box with the opposite / backward movement power of "two points and one line" relative to the cable clamping device; the first bending arm, the second bending arm and the bending arm motor control the inclination posture of the open gear box to avoid the collision between the inner wall of the open gear box and the cable joint, and ensure the radial distance between the lead casting mechanical hand and the outer wall of the cable joint.

[0030] Finally, the unexplained parts of the present application all adopt the existing technical products and mature technical means.

[0031] The above describes the present application and its embodiments, which are not restrictive, and the drawings shown are only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the present application.

Claims

1. An adaptively adjustable automatic lead-plating device for high-voltage cable joints, comprising an open gearbox and a cable clamping device, wherein the open gearbox is radially fastened to the cable, and the open gearbox circumferentially rotates to support the lead-plating manipulator; wherein the cable clamping device is radially clamped to the circumferential outer wall of the cable, and the cable clamping device provides the open gearbox with mutually parallel spacing adjustment power and translational guidance, characterized in that: The cable clamping device also provides the opening gearbox with the power and support for adjusting the angle between them; the two sides of the cable clamping device are hinged to the angle adjustment mechanism, and the top of the cable clamping device is hinged to the spacing adjustment mechanism; the force output end of the angle adjustment mechanism is hinged to the two sides of the opening gearbox to adjust the angle between the opening gearbox and the cable clamping device; the force output end of the spacing adjustment mechanism is hinged to the top of the opening gearbox to adjust the straight-line spacing between the opening gearbox and the cable clamping device.

2. The adaptive adjustment automatic lead-lined device for high-voltage cable joints according to claim 1, characterized in that: The angle adjustment mechanism has two sets and is symmetrically arranged on both sides of the cable clamping device. The angle adjustment mechanism includes a bending arm motor, a first-stage bending arm, a second-stage bending arm and a back plate fixing arm connected in sequence.

3. The adaptive adjustment automatic lead-lined device for high-voltage cable joints according to claim 2, characterized in that: The flexing arm motor is fixedly mounted on the outer casing of the cable clamping device facing the open gearbox. The power output end of the flexing arm motor is fixedly connected to the first-stage flexing arm and provides horizontal rotation power to the first-stage flexing arm.

4. The adaptive adjustment automatic lead-lined device for high-voltage cable joints according to claim 3, characterized in that: The free end of the first-stage flexing arm is hinged to the second-stage flexing arm, and the first-stage flexing arm provides horizontal rotation and dragging power to the second-stage flexing arm.

5. The adaptive adjustment automatic lead-lined device for high-voltage cable joints according to claim 4, characterized in that: The back plate fixing arm is fixedly connected to the back plate of the open gearbox facing the cable clamping device. The free end of the back plate fixing arm is hinged to the secondary bending arm, which provides the open gearbox with the power to adjust its tilt angle relative to the cable clamping device.

6. The adaptive adjustment automatic lead-lined device for high-voltage cable joints according to claim 1, characterized in that: The spacing adjustment mechanism includes a first rotating seat, a second rotating seat, a spacing adjustment motor, and a screw; the first rotating seat is horizontally rotatably connected to the top plane of the open gearbox; the second rotating seat is horizontally rotatably connected to the top plane of the cable clamping device; the spacing adjustment motor is fixed on the first rotating seat, and the power output end of the spacing adjustment motor is coaxially fixed to the screw; the screw horizontally penetrates the second rotating seat and engages with the internal thread of the second rotating seat.

Images