Pole tower for 10KV power distribution network line

Abstract

The invention discloses a tower for a 10KV power distribution network line, and the tower comprises a supporting tower body, the upper end of the supporting tower body is fixedly provided with a rotating cross arm module, and the rotating cross arm module comprises a rotating mechanism and a telescopic cross arm mechanism; in order to solve the technical problems that in the prior art, a common 10KV tower structure is fixed, the safety distance margin is small during live working, the working space is limited, and shielding is tedious, the invention designs a rotary telescopic cross arm structure capable of actively adjusting the spatial position of a wire. A spacious and isolated safe operation space can be created, so that the safe distance between an operator and a tool and an adjacent electrified body is increased, the operation efficiency and safety are improved, a standard operation interface is provided for automatic operation and maintenance equipment, and the device is particularly suitable for complex non-power-cut operation scenes in narrow space areas such as multi-circuit lines and corner positions.

Description

A pole for 10kV distribution network lines Technical Field

[0001] This application relates to the field of power transmission equipment technology, and in particular to a pole for a 10KV distribution network line. Background Technology

[0002] As the end-point power supply network directly facing users, the reliability of the 10kV distribution network directly affects socio-economic activities and the quality of life of residents. In order to minimize power outage time, the use of live-line work methods for inspection, maintenance and upgrading has become an inevitable trend and a rigid requirement in the industry.

[0003] However, the 10KV poles and towers currently in widespread use, such as reinforced concrete poles and angle steel towers, were designed primarily to meet static operational requirements such as conductor support, mechanical strength, and electrical insulation. They did not adequately consider providing active and convenient support for dynamic live-line work, resulting in many prominent and difficult-to-overcome technical problems in actual operations.

[0004] First, the safety distance guarantee is insufficient. The crossarm layout of traditional towers is fixed, and the spatial position of the conductors is relatively rigid. Especially in multi-circuit lines, corner towers, or areas with dense equipment, the electrical safety distance margin between workers, insulated tools, and adjacent conductors and grounded towers at different potentials is very limited. Any slight operational deviation or body sway during operation may cause flashover or electric shock accidents, resulting in extremely high safety risks.

[0005] Secondly, the working space is severely limited. The fixed crossarm and conductor layout results in an extremely narrow working window. When performing routine operations such as replacing insulators and connecting lead wires, it is difficult for workers to operate, and large, efficient insulating tools cannot be effectively used, leading to low work efficiency. Furthermore, prolonged high-intensity work in a confined space further amplifies safety risks and worker fatigue.

[0006] In other words, existing technologies have the following technical problems: ordinary fixed 10kV distribution network tower structures are difficult to maintain a safe distance during maintenance. Therefore, a new type of tower for 10kV distribution network lines is proposed to address these issues. Summary of the Invention

[0007] This embodiment provides a pole for 10KV distribution network lines to solve the problem that ordinary fixed 10KV distribution network pole structures in the prior art are difficult to maintain a safe distance during maintenance.

[0008] According to one aspect of this application, a pole for a 10kV distribution network line is provided, comprising: a supporting tower body, a rotating crossarm module fixedly disposed at the upper end of the supporting tower body, the rotating crossarm module including a rotating mechanism and a telescopic crossarm mechanism; the rotating mechanism including a rotatable rotating seat and a rotating drive unit drivenly connected to the rotating seat, the rotating drive unit being used to drive the rotating seat to rotate; the telescopic crossarm mechanism including a fixed arm, a movable arm and a telescopic drive unit drivenly connected to the movable arm, the telescopic drive unit being used to drive the movable arm to extend and retract along the fixed arm; an insulator string and a conductor are disposed at one end of the movable arm; a buffer mechanism is also disposed at one end of the movable arm for adaptively extending and retracting the conductor allowance during movement.

[0009] Furthermore, the upper end of the support tower is fixedly mounted on a fixed base, the fixed base has an inner cavity, a rotary drive shaft is rotatably connected to the inner cavity of the fixed base, and a rotary seat is fixedly connected to the upper end of the rotary drive shaft; the support tower also has an inner cavity, and a drive unit is also provided in the inner cavity of the support tower, the drive unit being poweredly connected to the rotary drive shaft.

[0010] Furthermore, the fixed arm is fixedly mounted on the side wall of the rotating seat, and a movable arm is slidably connected in the inner cavity of the fixed arm; a drive unit is installed in the inner cavity of the fixed arm to drive the movable arm to extend or retract in a straight line along the inner cavity of the fixed arm.

[0011] Furthermore, the buffer mechanism includes a U-shaped fixed seat, a movable seat, and a rotating round seat. The U-shaped fixed seat is fixedly installed at one end of the movable arm. The movable seat is slidably connected to the U-shaped fixed seat, and buffer springs are fixedly connected to both sides of the movable seat. A fixed round seat is also fixedly connected to the bottom surface of the U-shaped fixed seat, and a rotating round seat is rotatably connected to the bottom end of the fixed round seat. An insulator string and a conductor are fixedly installed at the bottom end of the rotating round seat.

[0012] Furthermore, lateral support arms are fixedly connected to both sides of the rotating base, a fixed bracket is fixedly connected to the bottom surface of the lateral support arm, and a movable bracket is slidably connected to the bottom surface of the lateral support arm; a spiral cable is fixedly connected between the bottom ends of the fixed bracket and the movable bracket, and the spiral cable is connected to the wire.

[0013] Furthermore, the lateral support arm has an internal cavity, in which a guide slider is slidably connected, and the guide slider is fixedly connected to the moving bracket; a return spring is also fixedly connected to one side of the guide slider; a guide wheel is also rotatably connected to one end of the lateral support arm, and the guide wheel is in contact with the wire.

[0014] Furthermore, the drive unit of the telescopic crossarm mechanism includes a drive block, a drive screw, and a telescopic drive motor; both the fixed arm and the movable arm have internal cavities. The drive block is fixedly installed in the cavity of the movable arm, and a fixed plate is fixedly connected in the cavity of the fixed arm. The drive screw is rotatably connected to the fixed plate, and the drive screw passes through the drive block and is threadedly engaged with the drive block; the telescopic drive motor is also fixedly installed in the cavity of the fixed arm, and the end of the output shaft of the telescopic drive motor is connected to the drive screw through a clutch unit.

[0015] Furthermore, a linkage control unit is connected between the clutch unit and the buffer mechanism of the telescopic crossarm mechanism; the clutch unit includes a first clutch plate, a second clutch plate, and a movable slider. The first clutch plate is fixedly mounted at one end of the drive screw, and the movable slider is slidably connected in the inner cavity of the fixed arm. A spline rod is rotatably connected to the movable slider, and a spline sleeve is slidably connected to one end of the spline rod. One end of the spline sleeve is fixedly connected to the end of the output shaft of the telescopic drive motor; the other end of the spline rod is fixedly connected to the second clutch plate, and the second clutch plate is separably coupled to the first clutch plate.

[0016] Furthermore, the linkage control unit includes a first fixed cylinder and a second fixed cylinder; the second fixed cylinder is located at the bottom of the fixed arm; a second piston is slidably connected in the inner cavity of the second fixed cylinder, a movable push rod is fixedly connected to one side of the second piston, a movable foot is fixedly connected to one end of the movable push rod, the movable foot is slidably connected to the fixed arm, and the movable foot is fixedly connected to the movable slider.

[0017] Furthermore, the first fixed cylinder is fixedly installed in the inner cavity of the lateral support arm, and one end of the connecting pipe is fixedly connected to one side of the inner cavity of the first fixed cylinder, and the other end of the connecting pipe extends into the inner cavity of the second fixed cylinder.

[0018] Furthermore, the shielding and protection mechanism also includes: a fixed bracket, fixedly connected to both sides of the supporting tower; a rectangular fixed shell, fixedly connected to the other end of the fixed bracket; two rotating shafts, respectively rotatably connected to both sides of the inner cavity of the rectangular fixed shell; a support frame rod, fixedly connected to the arc-shaped wall of the rotating shaft; an insulating curtain, fixedly connected between the two support frame rods; and a drive assembly, disposed on the rectangular fixed shell and drivenly connected to the rotating shaft, used to drive the rotating shaft to rotate so that the support frame rod drives the insulating curtain to unfold or retract.

[0019] In order to solve the technical problems of fixed 10KV tower structures, small safety distance margin during live-line work, limited working space, and cumbersome shielding in the prior art, this application designs a rotating telescopic crossarm structure that can actively adjust the spatial position of the conductor. By controlling the rotation and telescopic of the crossarm, a spacious and isolated safe working space can be created, thereby increasing the safe distance between the operator and tools and the adjacent live conductor, improving work efficiency and safety, and providing a standard working interface for automated operation and maintenance equipment. It is particularly suitable for complex live-line work scenarios in narrow spaces such as multi-circuit lines and corner positions. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 is a schematic diagram of the overall three-dimensional structure of an embodiment of this application; Figure 2 is a schematic diagram of the internal structure of the rotating mechanism of an embodiment of this application; Figure 3 is a partially enlarged schematic diagram of section A of Figure 2 of an embodiment of this application; Figure 4 is a partially enlarged schematic diagram of section B of Figure 2 of an embodiment of this application; Figure 5 is a schematic diagram of the overall connection structure of the buffer mechanism of an embodiment of this application; Figure 6 is a schematic diagram of the connection structure of the lateral support arm of an embodiment of this application; Figure 7 is a schematic diagram of the internal connection structure of the lateral support arm of an embodiment of this application; Figure 8 is a partially enlarged schematic diagram of section A of Figure 7 of an embodiment of this application; Figure 9 is a schematic diagram of the internal cross-sectional structure of the telescopic crossbeam mechanism of an embodiment of this application; Figure 10 is a partially enlarged schematic diagram of section A of Figure 9 of an embodiment of this application; Figure 11 is a schematic diagram of the internal structure of the linkage control unit of an embodiment of this application; Figure 12 is a schematic diagram of the internal structure of the shielding and protection mechanism of an embodiment of this application.

[0022] Figure 13 is a schematic diagram of the unfolded shielding and protection mechanism according to an embodiment of this application.

[0023] In the diagram: 1. Supporting tower body; 2. Rotating mechanism; 201. Fixed base; 202. Rotating seat; 203. Rotation drive shaft; 204. First gear; 205. Transmission rod; 206. Second gear; 207. First bevel gear; 208. Second bevel gear; 209. First rotating rod; 210. First pulley; 211. Steel wire rope; 212. Second rotating rod; 213. Second pulley; 214. Control motor; 3. Telescopic crossarm mechanism; 301. Fixed arm; 302. Moving arm; 303. Drive block; 304. Drive screw; 305. Fixed plate; 306. First clutch plate; 307. Second clutch plate; 308. Moving slider; 309. Spline rod; 310. Spline sleeve; 311. Telescopic drive motor; 4. Insulator string; 5. Wire; 6. Buffer mechanism; 601. U-shaped fixed seat; 602. Moving seat; 60 3. Buffer spring; 604. Fixed round seat; 605. Rotating round seat; 606. Lateral support arm; 607. Fixed bracket; 608. Moving bracket; 609. Spiral cable; 610. Guide slider; 611. Return spring; 612. Guide wheel; 7. Linkage control unit; 701. First fixed cylinder; 702. Connecting pipe; 703. First piston; 704. Push rod; 705. Contact slide plate; 706. Fixed foot. 707. Second fixed cylinder; 708. Second piston; 709. Moving push rod; 710. Moving foot; 711. Connecting spring; 8. Shielding and protective mechanism; 801. Fixed bracket; 802. Rectangular fixed shell; 803. Rotating shaft; 804. Support rod; 805. Protective shell; 806. Servo motor; 807. Bevel gear A; 808. Linkage rod; 809. Bevel gear B; 810. Insulating curtain. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] Please refer to Figures 1 and 2. A pole for a 10kV distribution network line includes: a support tower body 1, a rotating crossarm module fixedly installed at the upper end of the support tower body 1, the rotating crossarm module including a rotating mechanism 2 and a telescopic crossarm mechanism 3; the rotating mechanism 2 is fixedly installed at the top of the support tower body 1, and a rotatable rotating seat 202 is provided on the rotating mechanism 2, and the telescopic crossarm mechanism 3 is fixedly connected to both sides of the rotating seat 202; the telescopic crossarm mechanism 3 includes a fixed arm 301 and a movable arm 302, and an insulator string 4 and a conductor 5 are provided at one end of the movable arm 302, so that it can move with the crossarm.

[0026] One end of the movable arm 302 is also equipped with a buffer mechanism 6, which is used to adaptively adjust the wire allowance during the movement of the crossarm, maintain the wire tension, and prevent the wire from being excessively pulled or loosened.

[0027] This application creates a spacious, isolated, and safe working space by controlling the rotation and extension of the crossarm, thereby increasing the safe distance between operators and tools and nearby live conductors, improving work efficiency and safety, and providing a standard working interface for automated operation and maintenance equipment. It is particularly suitable for complex uninterrupted power supply operation scenarios in narrow spaces such as multi-circuit lines and corner locations.

[0028] In a preferred embodiment of this application, referring to Figures 2 and 3, the upper end of the support tower body 1 is fixedly mounted on a fixed base 201. The fixed base 201 has an inner cavity, and a rotary drive shaft 203 is rotatably connected to the inner cavity of the fixed base 201. A rotary seat 202 is fixedly connected to the upper end of the rotary drive shaft 203, forming a structure that supports and drives the entire crossarm module to rotate.

[0029] The support tower body 1 has an internal cavity, and a drive unit is also provided in the internal cavity of the support tower body 1. The drive unit is powered by the rotating drive shaft 203 and is used to transmit power from the easily maintained area below the tower body to the top of the tower to drive the rotating seat 202 to rotate.

[0030] This technical solution integrates the main drive components into the tower body and places them at the bottom, facilitating future maintenance.

[0031] Further, referring to Figures 3 and 4, the drive unit includes a first gear 204, a transmission rod 205, and a second gear 206.

[0032] The first gear 204 is fixedly installed on the arc-shaped wall of the rotary drive shaft 203. A transmission rod 205 is rotatably connected in the inner cavity of the support tower body 1. The top end of the transmission rod 205 extends into the inner cavity of the fixed base 201. A second gear 206 is fixedly connected to the top end of the transmission rod 205. The second gear 206 meshes with the first gear 204 to convert the rotational motion of the transmission rod 205 into the rotational motion of the rotary drive shaft 203, thereby achieving first-stage deceleration and reversal.

[0033] A first bevel gear 207 is fixedly connected to the bottom end of the transmission rod 205, and a first rotating rod 209 and a second rotating rod 212 are rotatably connected to the upper and lower sides of the inner cavity of the support tower body 1, respectively.

[0034] A first pulley 210 is fixedly connected to the arc-shaped wall of the first rotating rod 209, and a second pulley 213 is fixedly connected to the arc-shaped wall of the second rotating rod 212. A steel wire rope 211 is sleeved between the first pulley 210 and the second pulley 213 to form a vertically arranged closed-loop traction system. The first rotating rod 209 is driven to rotate forward and backward by winding and unwinding the steel wire rope 211.

[0035] Furthermore, a second bevel gear 208 is fixedly connected to the arc-shaped wall of the first rotating rod 209. The second bevel gear 208 meshes with the first bevel gear 207 to convert the horizontal rotational motion of the first rotating rod 209 into the vertical rotational motion of the transmission rod 205, thereby realizing the second reversal and power transmission.

[0036] A control motor 214 is also fixedly installed in the inner cavity of the support tower body 1. The output shaft end of the control motor 214 is connected to one end of the second rotating rod 212 through a coupling, which is used to provide the original power for the entire rotation drive system and realize the clockwise or counterclockwise rotation of the crossarm through forward and reverse control.

[0037] With the above technical solution, when the control motor 214 starts, it drives the second rotating rod 212 to rotate. The first rotating rod 209 rotates synchronously through the traction of the wire rope 211. The power is then transmitted to the transmission rod 205 through the second bevel gear 208 and the first bevel gear 207. Finally, through the meshing of the second gear 206 and the first gear 204, the rotating drive shaft 203 and the rotating seat 202 are driven to rotate, thereby controlling the spatial orientation of the telescopic crossarm mechanism 3 on both sides.

[0038] This long-distance, multi-stage transmission scheme places the easy-to-maintain motor at a low position and utilizes the reliability of the wire rope 211 transmission and the precision of the gear transmission to achieve stable drive of the high-altitude rotating mechanism 2.

[0039] Preferably, to ensure smoother high-altitude rotation, the transmission ratios of the first gear 204 and the second gear 206, as well as the transmission ratio of the first bevel gear 207 and the second bevel gear 208, are designed to be reduction ratios greater than 1. Specifically, the overall transmission ratio is preferably between 50:1 and 200:1, used to convert the high-speed, low-torque output of the control motor 214 into the low-speed, high-torque rotational motion required by the crossarm, and to improve the accuracy of rotational positioning.

[0040] In a preferred embodiment of this application, referring to FIG5, a fixed arm 301 is fixedly disposed at the side wall position of the rotating seat 202, and a movable arm 302 is slidably connected in the inner cavity of the fixed arm 301.

[0041] A drive unit is installed in the inner cavity of the fixed arm 301 to drive the moving arm 302 to extend or retract linearly along the inner cavity of the fixed arm 301, so as to adjust the radial position of the guide wire 5.

[0042] This technical solution allows for increased phase spacing or more space for tools during operation through telescopic movement, while retracting to maintain a compact line corridor during non-operational periods.

[0043] In one specific embodiment of this application, referring to Figures 5 and 6, the buffer mechanism 6 includes a U-shaped fixed seat 601, a movable seat 602 and a rotating round seat 605, with the U-shaped fixed seat 601 fixedly disposed at one end of the movable arm 302.

[0044] A guide groove is provided on the U-shaped fixed base 601. A movable base 602 is slidably connected in the guide groove of the U-shaped fixed base 601. One end of a buffer spring 603 is fixedly connected to both sides of the movable base 602. The other end of the buffer spring 603 extends to the side of the U-shaped fixed base 601 and is fixedly connected to the U-shaped fixed base 601.

[0045] With this technical solution, when the crossarm rotates or extends, causing the conductor 5 to be subjected to tension or thrust, the movable seat 602 can slide along the guide groove and compress or stretch the buffer spring 603, thereby absorbing kinetic energy and providing a flexible and movable mounting base for the conductor, thus initially alleviating stress sudden changes.

[0046] As a further technical solution, referring to Figure 6, a fixed round seat 604 is also fixedly connected to the bottom surface of the U-shaped fixed seat 601. A rotating round seat 605 is rotatably connected to the bottom end of the fixed round seat 604. An insulator string 4 and a conductor 5 are fixedly installed at the bottom end of the rotating round seat 605, so as to allow the conductor 5 to rotate freely around the vertical axis in the horizontal plane, so that the conductor can adaptively adjust its direction when the crossarm rotates, avoiding twisting.

[0047] With this technical solution, when the rotating crossarm module rotates and extends, it will drive the insulator string 4 to move in space. Through the rotational freedom of the rotating base 605, it can be ensured that the conductor 5 and the line direction always maintain a straight connection, eliminating torsional stress. Through the extension and retraction of the buffer spring 603, longitudinal displacement compensation is provided. The dual mechanisms work together to enable the conductor to move smoothly with the crossarm.

[0048] In a preferred embodiment of the buffer mechanism 6, as shown in Figure 7, lateral support arms 606 are fixedly connected to both sides of the rotating round seat 605, a fixed bracket 607 is fixedly connected to the bottom surface of the lateral support arm 606, and a movable bracket 608 is slidably connected to the bottom surface of the lateral support arm 606.

[0049] A spiral cable 609 is fixedly connected between the bottom ends of the fixed bracket 607 and the movable bracket 608. The spiral cable 609 is connected to the wire 5 to form an elastically expandable wire margin compensation section.

[0050] With this technical solution, when the crossarm movement requires a change in conductor length, the movable support 608 can slide relative to the fixed support 607, stretching or compressing the spiral cable 609, like a "spring" actively absorbing or releasing the change in conductor length, providing the conductor with the main and controllable margin compensation, so that it remains relaxed and tension-free throughout the entire movement of the crossarm.

[0051] Furthermore, referring to Figure 7, the lateral support arm 606 has an inner cavity, and a guide slider 610 is slidably connected in the inner cavity of the lateral support arm 606. The guide slider 610 is fixedly connected to the moving bracket 608 and is used to precisely guide the sliding trajectory of the moving bracket 608.

[0052] One end of a return spring 611 is fixedly connected to one side of the guide slider 610, and the other end of the return spring 611 is fixedly connected to the inner wall of the lateral support arm 606; providing a return-to-center tendency for the moving bracket 608 and providing additional cushioning protection when the spiral cable 609 is overstretched.

[0053] A guide wheel 612 is rotatably connected to one end of the lateral support arm 606. The guide wheel 612 contacts the wire 5 and is used to change the lead-out direction of the wire 5 and reduce the friction between it and the structural components.

[0054] In one specific embodiment of this application, referring to FIG9, the drive unit of the telescopic crossarm mechanism 3 includes a drive block 303, a drive screw 304, and a telescopic drive motor 311.

[0055] Both the fixed arm 301 and the movable arm 302 have internal cavities. A drive block 303 is fixedly installed in the internal cavity of the movable arm 302. A fixed plate 305 is fixedly connected in the internal cavity of the fixed arm 301. A drive screw 304 is rotatably connected to the fixed plate 305. The drive screw 304 passes through the drive block 303 and is threadedly engaged with the drive block 303.

[0056] A telescopic drive motor 311 is also fixedly installed in the inner cavity of the fixed arm 301. The output shaft end of the telescopic drive motor 311 is connected to the drive screw 304 through a clutch unit, which is used to transmit torque to drive telescopic extension when needed, or to disconnect the connection under specific circumstances to protect the motor and mechanism.

[0057] Specifically, in order to make the telescopic drive self-locking, the drive screw 304 is a trapezoidal thread or a ball screw.

[0058] Furthermore, the lead of the drive screw 304 is matched with the thread parameters of the drive block 303, so that the linear displacement of the moving arm 302 is controlled within the range of 5mm to 20mm for each revolution of the telescopic drive motor 311, which is used to achieve fine adjustment of the telescopic extension of the crossarm.

[0059] The clutch unit of the telescopic crossarm mechanism 3 and the buffer mechanism 6 are also connected to a linkage control unit 7, which is used to monitor the tension of the conductor and automatically cut off the telescopic drive when the conductor is about to run out or is overloaded, so as to realize mechanical overload protection.

[0060] Specifically, the clutch unit of the telescopic crossarm mechanism 3 includes a first clutch plate 306, a second clutch plate 307, and a movable slider 308.

[0061] The first clutch plate 306 is fixedly mounted at one end of the drive screw 304. A movable slider 308 is slidably connected in the inner cavity of the fixed arm 301. A spline rod 309 is rotatably connected to the movable slider 308. A spline sleeve 310 is slidably connected to one end of the spline rod 309. One end of the spline sleeve 310 is fixedly connected to the end of the output shaft of the telescopic drive motor 311, which is used to transmit motor power while allowing the spline rod 309 to slide axially.

[0062] The other end of the spline rod 309 is fixedly connected to a second clutch plate 307. The second clutch plate 307 is detachably coupled to the first clutch plate 306, so that when the two are engaged, the motor power drives the screw 304 to rotate; when the two are disengaged, the power transmission is interrupted.

[0063] With this technical solution, when telescopic operation is required, the movable slider 308 is pushed to engage the second clutch plate 307 with the first clutch plate 306, and the power is connected. When the linkage control unit 7 is triggered, the movable slider 308 is pulled back, the clutch is disengaged, and the telescopic movement stops immediately, thereby preventing damage to the mechanism caused by wire jamming or reaching the limit position.

[0064] Specifically, the first clutch plate 306 and the second clutch plate 307 constitute a toothed clutch. On the end face of the first clutch plate 306 facing the second clutch plate 307, a plurality of raised rectangular or trapezoidal teeth are uniformly arranged in the circumferential direction. Correspondingly, on the corresponding end face of the second clutch plate 307, a tooth groove matching its shape and size is provided.

[0065] When the connecting spring 711 pushes the movable foot 710 and the movable slider 308, the second clutch plate 307 is pushed towards the first clutch plate 306. After the end faces of the two contacts, under the continuous action of the spring force, through the guide slope of the teeth or slight relative rotation, the teeth are finally fully embedded in the tooth groove, realizing circumferential rigid engagement, thereby transmitting the torque of the telescopic drive motor 311 to the drive screw 304.

[0066] When the linkage control unit 7 is activated, pulling the movable slider 308 to overcome the elastic force of the connecting spring 711, the second clutch plate 307 is axially pulled away from the first clutch plate 306, and the teeth and grooves of the two are completely disengaged, the power transmission path is physically cut off, and separation is achieved. This kind of jaw clutch structure separates thoroughly and can transmit a large torque, making it very suitable as a key actuator for mechanical overload protection in this application.

[0067] Furthermore, referring to Figures 10, 8 and 11, the linkage control unit 7 includes a first fixed cylinder 701 and a second fixed cylinder 707.

[0068] The second fixed cylinder 707 is located at the bottom of the fixed arm 301. One end of the second fixed cylinder 707 is fixedly connected to a fixed leg 706, which is fixedly connected to the outer wall of the fixed arm 301.

[0069] A second piston 708 is slidably connected in the inner cavity of the second fixed cylinder 707. One end of a movable push rod 709 is fixedly connected to one side of the second piston 708. The other end of the movable push rod 709 passes through the inner wall of the second fixed cylinder 707 and extends to the outside of the wall. One end of the movable push rod 709 is fixedly connected to a movable foot 710. The movable foot 710 is slidably connected to the fixed arm 301. The movable foot 710 is fixedly connected to the movable slider 308, which is used to directly transmit the linear motion of the second piston 708 to the movable slider 308 to control the engagement and disengagement of the clutch.

[0070] A connecting spring 711 is also fixedly connected between the fixed leg 706 and the movable leg 710. This spring provides elastic force to the movable slider 308, causing it to tend towards the clutch engagement state, thus ensuring the reliability of transmission under normal conditions.

[0071] Furthermore, referring to Figure 8, the first fixed cylinder 701 is fixedly installed in the inner cavity of the lateral support arm 606. One end of the connecting pipe 702 is fixedly connected to one side of the inner cavity of the first fixed cylinder 701, and the other end of the connecting pipe 702 extends into the inner cavity of the second fixed cylinder 707, forming a connected closed hydraulic or pneumatic circuit. The inner cavities of both the first fixed cylinder 701 and the second fixed cylinder 707 are filled with incompressible hydraulic oil or inert gas for transmitting pressure and displacement.

[0072] In a preferred embodiment, the inner cavities of the first fixed cylinder 701 and the second fixed cylinder 707, along with the connecting pipe 702, together constitute a closed hydraulic structure filled with hydraulic oil that has good fluidity, low compressibility, and stable chemical properties. The operating pressure range of the above structure is 0.3 MPa to 1.5 MPa.

[0073] Regarding sealing, to ensure reliability during long-term outdoor operation, seals are provided at the sliding contact surfaces of the first piston 703 and the second piston 708 with their respective cylinder inner walls, as well as at all static sealing interfaces. For example, O-rings or combination seals can be installed on the pistons, and O-rings or gaskets can be used for static sealing. Preferably, the entire circuit is completely sealed after being filled with hydraulic oil to isolate dust and moisture and prevent oil leakage.

[0074] It is understood that, in alternative embodiments, the circuit may also be filled with a dry inert gas, such as nitrogen, to form a pneumatic transmission structure.

[0075] A first piston 703 is slidably connected in the inner cavity of the first fixed cylinder 701. One end of a push rod 704 is fixedly connected to one side of the first piston 703. The other end of the push rod 704 passes through the inner wall of the first fixed cylinder 701 and extends to the outside of the wall. One end of the push rod 704 is fixedly connected to a contact slide plate 705. The contact slide plate 705 slides in cooperation with the lateral support arm 606 to sense the position of the guide slider 610.

[0076] With this technical solution, when the crossarm extension and retraction causes a change in the wire allowance, the moving bracket 608 drives the guide slider 610 to move. When the wire allowance is about to be exhausted, that is, when the moving bracket 608 slides to the limit position, the guide slider 610 will squeeze the contact slide plate 705 and push the first piston 703 to move.

[0077] By transmitting fluid pressure within a closed circuit, the second piston 708 inside the second fixed cylinder 707 is driven to move, thereby pulling the movable foot 710 and the movable slider 308 to overcome the elastic force of the connecting spring 711 and move, causing the second clutch plate 307 to separate from the first clutch plate 306, and then immediately cutting off the power of the telescopic drive motor 311, thus realizing the mechanical automatic linkage protection between the wire tension and the telescopic drive.

[0078] To ensure the triggering accuracy and response reliability of the linkage control unit 7, the effective working area of ​​the first piston 703 is set to A1, and the effective working area of ​​the second piston 708 is set to A2. When the guide slider 610 pushes the contact slide plate 705 to displace the first piston 703 by a distance S1, the volume of hydraulic oil it displaces is V1 = A1 × S1. The volume V1 is transmitted equally to the second fixed cylinder 707 through the connecting pipe 702, driving the second piston 708 to produce a displacement S2, satisfying V1 = A2 × S2. Therefore, the displacement ratio of the two pistons is: S1 / S2 = A2 / A1.

[0079] By appropriately setting the area ratio of A1 to A2, a second piston 708 working stroke S2 ​​can be obtained with a relatively small guide slider 610 trigger displacement S1, sufficient to overcome the elastic force of the connecting spring 711 and ensure complete disengagement of the clutch unit. Preferably, the area ratio of A2 / A1 is designed to be between 1:1 and 1:2 to balance the trigger sensitivity and the output requirements of the actuator.

[0080] In a preferred embodiment of this application, referring to FIG12, a shielding and protection mechanism 8 is also fixedly provided on the side of the support tower body 1. The shielding and protection mechanism 8 includes a rectangular fixed shell 802, a rotating shaft 803 and a support frame rod 804.

[0081] Both sides of the support tower body 1 are fixedly connected to one end of a fixed bracket 801, and the other end of the fixed bracket 801 is fixedly connected to a rectangular fixed shell 802.

[0082] Rotating shafts 803 are rotatably connected to both sides of the inner cavity of the rectangular fixed shell 802. Support rods 804 are fixedly connected to the arc-shaped walls of the two rotating shafts 803. An insulating curtain 810 is fixedly connected between the two support rods 804.

[0083] With this technical solution, when live-line work is required, the support frame 804 can be driven to rotate and unfold from the rectangular fixed shell 802, thereby laying a large-area insulating curtain 810 between the work area and the adjacent live body to form an insulating barrier.

[0084] As shown in Figure 13, when the two support rods 804 are in a vertical position, the insulating curtain 810 can be fully unfolded to cover a huge vertical protective surface, simplifying the tedious process of traditionally laying insulating blankets manually.

[0085] Furthermore, referring to Figure 12, a protective shell 805 is also fixedly installed on the side wall of the rectangular fixed shell 802. A servo motor 806 is fixedly installed in the inner cavity of the protective shell 805. The end of the output shaft of the servo motor 806 is fixedly connected to one end of the rotating shaft 803.

[0086] In order to ensure that the support rods 804 on both sides can be opened or retracted synchronously and to ensure that the curtain is flat, a bevel gear A807 is fixedly connected to one end of each of the two rotating shafts 803, and a linkage rod 808 is provided between the two bevel gears A807.

[0087] Both ends of the linkage rod 808 are fixedly connected to bevel gears B809. Bevel gears B809 and bevel gears A807 mesh with each other. Through this technical solution, when a servo motor 806 drives the rotating shaft 803 on one side to rotate, the power is synchronously transmitted to the rotating shaft 803 on the other side through bevel gears A807, B809 and linkage rod 808, thereby ensuring that the angles of the support rods 804 on both sides are consistent, and realizing the opening and closing of the insulated curtain 810.

[0088] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0089] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pole for a 10kV distribution network line, characterized in that: include: A supporting tower body (1) is provided with a rotating crossarm module fixedly installed at the upper end of the supporting tower body (1). The rotating crossarm module includes a rotating mechanism (2) and a telescopic crossarm mechanism (3). The rotating mechanism (2) includes a rotatable rotating seat (202) and a rotating drive unit driven by the rotating seat (202). The rotating drive unit is used to drive the rotating seat (202) to rotate. The telescopic crossarm mechanism (3) includes a fixed arm (301), a movable arm (302), and a telescopic drive unit driven by the movable arm (302). The telescopic drive unit is used to drive the moving arm (302) to extend and retract along the fixed arm (301); an insulator string (4) and a conductor (5) are provided at one end of the moving arm (302); a buffer mechanism (6) is also provided at one end of the moving arm (302) to adaptively extend and retract the conductor during movement; a shielding and protection mechanism (8) is also fixedly provided on the side of the support tower (1), the shielding and protection mechanism (8) includes a rectangular fixed shell (802), a support frame rod (804) and an insulating curtain (810).

2. The pole for a 10kV distribution network line according to claim 1, characterized in that: The upper end of the support tower body (1) is fixedly mounted on the fixed base (201). The fixed base (201) has an inner cavity. A rotary drive shaft (203) is rotatably connected in the inner cavity of the fixed base (201). A rotary seat (202) is fixedly connected to the upper end of the rotary drive shaft (203). The support tower body (1) has an inner cavity. A drive unit is also provided in the inner cavity of the support tower body (1). The drive unit is poweredly connected to the rotary drive shaft (203).

3. The pole for a 10kV distribution network line according to claim 1, characterized in that: The fixed arm (301) is fixedly disposed on the side wall of the rotating seat (202), and a movable arm (302) is slidably connected in the inner cavity of the fixed arm (301); a driving unit is installed in the inner cavity of the fixed arm (301) for driving the movable arm (302) to extend or retract in a straight line along the inner cavity of the fixed arm (301).

4. The pole for a 10kV distribution network line according to claim 1, characterized in that: The buffer mechanism (6) includes a U-shaped fixed seat (601), a movable seat (602), and a rotating round seat (605). The U-shaped fixed seat (601) is fixedly installed at one end of the movable arm (302). The movable seat (602) is slidably connected to the U-shaped fixed seat (601), and buffer springs (603) are fixedly connected to both sides of the movable seat (602). A fixed round seat (604) is also fixedly connected to the bottom surface of the U-shaped fixed seat (601). A rotating round seat (605) is rotatably connected to the bottom end of the fixed round seat (604). An insulator string (4) and a conductor (5) are fixedly installed at the bottom end of the rotating round seat (605).

5. The pole for a 10kV distribution network line according to claim 4, characterized in that: Lateral support arms (606) are fixedly connected to both sides of the rotating round seat (605). A fixed bracket (607) is fixedly connected to the bottom surface of the lateral support arm (606), and a movable bracket (608) is slidably connected to the bottom surface of the lateral support arm (606). A spiral cable (609) is fixedly connected between the bottom ends of the fixed bracket (607) and the movable bracket (608), and the spiral cable (609) is connected to the wire (5).

6. The pole for a 10kV distribution network line according to claim 5, characterized in that: The lateral support arm (606) has an inner cavity, and a guide slider (610) is slidably connected in the inner cavity of the lateral support arm (606). The guide slider (610) is fixedly connected to the moving bracket (608). A return spring (611) is also fixedly connected to one side of the guide slider (610). A guide wheel (612) is also rotatably connected to one end of the lateral support arm (606), and the guide wheel (612) is in contact with the wire (5).

7. The pole for a 10kV distribution network line according to claim 3, characterized in that: The drive unit of the telescopic crossarm mechanism (3) includes a drive block (303), a drive screw (304), and a telescopic drive motor (311). The fixed arm (301) and the movable arm (302) are both provided with internal cavities. The drive block (303) is fixedly installed in the internal cavity of the movable arm (302). A fixed plate (305) is fixedly connected in the internal cavity of the fixed arm (301). The drive screw (304) is rotatably connected on the fixed plate (305). The drive screw (304) passes through the drive block (303) and is threadedly engaged with the drive block (303). The telescopic drive motor (311) is also fixedly installed in the internal cavity of the fixed arm (301). The output shaft end of the telescopic drive motor (311) is connected to the drive screw (304) through a clutch unit.

8. The pole for a 10kV distribution network line according to claim 4, characterized in that: The clutch unit of the telescopic crossarm mechanism (3) and the buffer mechanism (6) are also connected to a linkage control unit (7); the clutch unit includes a first clutch plate (306), a second clutch plate (307) and a movable slider (308). The first clutch plate (306) is fixedly disposed at one end of the drive screw (304). The movable slider (308) is slidably connected in the inner cavity of the fixed arm (301). A spline rod (309) is rotatably connected on the movable slider (308). A spline sleeve (310) is slidably connected at one end of the spline rod (309). One end of the spline sleeve (310) is fixedly connected to the end of the output shaft of the telescopic drive motor (311). The other end of the spline rod (309) is fixedly connected to the second clutch plate (307). The second clutch plate (307) and the first clutch plate (306) are separably coupled.

9. The pole for a 10kV distribution network line according to claim 8, characterized in that: The linkage control unit (7) includes a first fixed cylinder (701) and a second fixed cylinder (707); the second fixed cylinder (707) is located at the bottom surface of the fixed arm (301), and a fixed bracket (706) is fixedly connected to one end of the second fixed cylinder (707), the fixed bracket (706) being fixedly connected to the outer wall of the fixed arm (301); a second piston (708) is slidably connected in the inner cavity of the second fixed cylinder (707), and one end of a movable push rod (709) is fixedly connected to one side of the second piston (708), the other end of the movable push rod (709) penetrating the inner wall of the second fixed cylinder (707) and extending to the outside of the wall, and a movable push rod (709) is fixedly connected to one end of the movable push rod (709). The movable leg (710) is slidably connected to the fixed arm (301), and the movable leg (710) is fixedly connected to the movable slider (308); the first fixed cylinder (701) is fixedly installed in the inner cavity of the lateral support arm (606), and one end of the connecting pipe (702) is fixedly connected to one side of the inner cavity of the first fixed cylinder (701), and the other end of the connecting pipe (702) extends into the inner cavity of the second fixed cylinder (707); a first piston (703) is slidably connected in the inner cavity of the first fixed cylinder (701), and a push rod (704) is fixedly connected to one side of the first piston (703), and one end of the push rod (704) is fixedly connected to a contact slide plate (705).

10. The pole for a 10kV distribution network line according to claim 1, characterized in that: The shielding and protection mechanism (8) further includes: a fixed bracket (801) fixedly connected to both sides of the support tower (1); a rectangular fixed shell (802) fixedly connected to the other end of the fixed bracket (801); two rotating shafts (803) rotatably connected to both sides of the inner cavity of the rectangular fixed shell (802); a support rod (804) fixedly connected to the arc-shaped wall of the rotating shaft (803); an insulating curtain (810) fixedly connected between the two support rods (804); and a driving assembly disposed on the rectangular fixed shell (802) and drivenly connected to the rotating shaft (803) for driving the rotating shaft (803) to rotate so that the support rod (804) drives the insulating curtain (810) to unfold or retract.

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