Pole-climbing shielding equipment applied to overhead line operation
By designing automated pole-climbing shielding equipment and utilizing mechanized shielding and pole-climbing devices, the problem of difficult shielding curtain construction in overhead power line construction operations has been solved, achieving safe and efficient construction operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHONGSHAN COUNTRY ELECTRIC POWER ENG CO LTD
- Filing Date
- 2026-01-14
- Publication Date
- 2026-04-17
AI Technical Summary
In existing overhead power line construction operations, construction workers need to set up temporary shielding curtains to reduce the risk of electric shock, but the operation is cumbersome and affects efficiency, and manual construction cannot provide shielding protection during the process.
Design a pole-climbing shielding device, including a base, a shielding device, and a pole-climbing device. The shielding curtain is deployed through mechanization and automation. The pole is held by a fixed and movable gripping mechanism. The automatic climbing and shielding are achieved by combining a lifting and rotating drive mechanism. An induced current detection device enhances safety.
No manual shielding is required; the equipment climbs to a high position and opens the shielding curtain on its own, improving construction safety and efficiency. Inductive current detection further ensures safety.
Smart Images
Figure CN121875531A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power construction, and in particular to a pole-climbing shielding device for overhead line operations. Background Technology
[0002] In existing overhead power line construction work, workers need to operate under the power lines, which poses a certain degree of danger. Although the risk of electric shock can be reduced by building temporary shielding curtains, the operation is very cumbersome, the installation and dismantling of the shielding curtains are difficult, affecting work efficiency, and manually erected shielding curtains cannot provide shielding protection during the construction process. Summary of the Invention
[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a pole-climbing shielding device for overhead line operations, which can mechanically and automatically form a shield for overhead lines, thus eliminating the need for manual construction of the shielding curtain.
[0004] According to an embodiment of the present invention, a pole-climbing shielding device for overhead line operations includes: a base; a shielding device disposed on top of the base, the shielding device including a shielding curtain and a curtain unfolding and retracting mechanism, the shielding curtain being able to unfold and retract relative to the base, the curtain unfolding and retracting mechanism being connected to the shielding curtain, the curtain unfolding and retracting mechanism being used to drive the shielding curtain to unfold and retract; and a pole-climbing device disposed on the base and located below the shielding device, the pole-climbing device including a fixed gripping rod mechanism, a movable gripping rod assembly, and a lifting drive mechanism, the fixed gripping rod mechanism being disposed on the base, the movable gripping rod assembly being movably disposed on the base, the movable gripping rod assembly being provided with a movable gripping rod mechanism, the fixed gripping rod mechanism and the movable gripping rod mechanism being used to clamp and release the pole, and the lifting drive mechanism being disposed between the base and the movable gripping rod assembly, the lifting drive mechanism being used to drive the movable gripping rod assembly and the base to move up and down relative to each other.
[0005] According to an embodiment of the present invention, a pole-climbing shielding device for overhead line operations has at least the following beneficial effects: When shielding of an overhead line is required, a fixed gripping mechanism and a movable gripping mechanism are clamped onto the pole, allowing the fixed and movable gripping mechanisms to alternately release and clamp the pole. While the fixed gripping mechanism clamps the pole and the movable gripping mechanism releases it, a lifting drive mechanism raises the movable gripping assembly relative to the base. After rising a predetermined distance, the movable gripping mechanism re-clamps the pole, and then the fixed gripping mechanism releases the pole. The lifting drive mechanism then raises the base relative to the movable gripping assembly again. This process is repeated, allowing the device to gradually climb to the required shielding height. Then, both the fixed and movable gripping mechanisms simultaneously clamp the pole, and the shielding curtain is opened by a curtain unfolding and retracting mechanism, allowing construction personnel to perform operations under the shielding curtain, thus improving operational safety. After the construction personnel complete the work, the pole-climbing shielding device reverses its original path and returns to the ground for retrieval. The aforementioned pole-climbing shielding device can climb to the top of the pole and open the shielding curtain on its own, thus eliminating the need for manual installation of the shielding curtain and making it very convenient to use.
[0006] According to some embodiments of the present invention, an induced current detection device is also included, which is disposed on the lower side of the shielding device and is used to detect whether there is an induced current on the lower side of the shielding device.
[0007] According to some embodiments of the present invention, two sets of shielding screens and screen unfolding / retracting mechanisms are provided and are spaced apart from each other on the left and right. The two sets of shielding screens and screen unfolding / retracting mechanisms are respectively used to unfold the shielding screen to the left and to the right. A pole clearance space is formed between the two sets of shielding screens and screen unfolding / retracting mechanisms. The fixed gripping rod mechanism and the movable gripping rod mechanism each include two gripping claws arranged on the left and right. A forward gripping inlet and outlet is formed between the ends of the gripping claws. A pole inlet and outlet communicating with the pole clearance space is formed between the front ends of the two sets of shielding screens and screen unfolding / retracting mechanisms.
[0008] According to some embodiments of the present invention, the shielding device further includes a front shielding cover and a rear shielding cover, the front shielding cover and the rear shielding cover are arranged one after the other, the front shielding cover and the rear shielding cover are disposed between the two sets of shielding curtains and the curtain unfolding and retracting mechanisms and are used to cover the pole clearance position, the front shielding cover and the rear shielding cover are surrounded to form a pole adapter through hole for the power pole adapter to pass through, and the front shielding cover is detachable.
[0009] According to some embodiments of the present invention, the curtain unfolding and retracting mechanism includes a winder, a fixed edge strip, a folding frame, and a folding frame driving mechanism. The winder is fixed to the base, and the shielding curtain is rolled up by the winder. The fixed edge strip is fixed to one side of the shielding curtain. The fixed edge strip is connected to the winder or the base through the folding frame. When the folding frame is unfolded, it can move the fixed edge strip away from the winder to pull out and unfold the shielding curtain. When the folding frame is folded, it can move the fixed edge strip closer to the winder to allow the winder to roll up the shielding curtain. The folding frame driving mechanism is disposed on the winder or the base and is used to drive the folding frame to unfold and fold.
[0010] According to some embodiments of the present invention, two movable gripper assemblies are provided and arranged in a vertical direction.
[0011] According to some embodiments of the present invention, two lifting drive mechanisms are provided and are arranged one-to-one with the movable gripping rod assemblies, so as to independently drive the corresponding movable gripping rod assembly and the base to lift relative to each other.
[0012] According to some embodiments of the present invention, the fixed gripping rod mechanism includes a clamping claw, a drive gear, a drive rod, a connecting rod, and a clamping drive motor. The drive gear is pivotally mounted on the base. One end of the drive rod is fixed to the drive gear and extends radially out of the outer periphery of the drive gear. The clamping claw includes a claw body and an extension portion connected at one end to the claw body. The other end of the drive rod is hinged to the other end of the extension portion. One end of the connecting rod is hinged to the base, and the other end is hinged to the connection point between the extension portion and the claw body. The clamping claw, the drive gear, the drive rod, and the connecting rod are arranged in two sets and symmetrically arranged. The two drive gears in the two sets mesh with each other. The claw bodies of the two clamping claws in the two sets enclose a clamping position for the electric rod. The clamping drive motor is mounted on the base and is used to drive one of the drive gears to rotate in both directions.
[0013] According to some embodiments of the present invention, the movable gripper assembly includes a movable seat, which is movably disposed on the base. The movable gripper mechanism is disposed on the movable seat, and the lifting drive mechanism is connected to the movable seat. The movable gripper mechanism includes a clamping claw, a drive gear, a drive rod, a connecting rod, and a clamping drive motor. The drive gear is pivotally disposed on the movable seat. One end of the drive rod is fixed to the drive gear and extends radially out of the outer periphery of the drive gear. The clamping claw includes a claw body and one end connected to the base. The extension of the claw body has the other end of the drive rod hinged to the other end of the extension. One end of the connecting rod is hinged to the movable seat, and the other end is hinged to the connection between the extension and the claw body. The clamping claw, the drive gear, the drive rod, and the connecting rod are arranged in two sets and are symmetrically arranged on the left and right. The two drive gears in the two sets mesh with each other. The claw bodies of the two clamping claws in the two sets enclose an electric rod clamping position. The clamping drive motor is located on the movable seat and is used to drive one of the drive gears to rotate forward and backward.
[0014] According to some embodiments of the present invention, the pole-climbing shielding device further includes a rotating gripping rod assembly and a rotating drive mechanism. The rotating gripping rod assembly is provided with a rotating gripping rod mechanism for clamping and releasing the pole. The rotating gripping rod assembly is movably disposed relative to the base along an arc trajectory, the central axis of the arc trajectory coinciding with the axis of the pole when the rotating gripping rod mechanism clamps the pole. The rotating drive mechanism is disposed between the base and the rotating gripping rod assembly, and is used to drive the base and the rotating gripping rod assembly to adjust their relative positions along the arc trajectory. The rotating gripping rod assembly includes a rotating base, the rotating gripping rod mechanism is disposed on the rotating base, and the rotating base is movably disposed relative to the base along the arc trajectory. The rotating drive mechanism includes an arc gear, a mating gear, and a rotating drive motor. The arc gear is fixedly disposed on the base and extends along the arc trajectory. The rotating drive motor is fixedly disposed on the rotating base, and the mating gear is fixed to the output shaft of the rotating drive motor, and the mating gear meshes with the arc gear.
[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of an embodiment of the present invention on a utility pole; Figure 2 for Figure 1 A partially enlarged schematic diagram of the structure shown; Figure 3 This is a schematic diagram of the shielding screen after it has been unfolded according to an embodiment of the present invention; Figure 4 This is an exploded view of the pole climbing device according to an embodiment of the present invention; Figure 5 A three-dimensional schematic diagram of an embodiment of the present invention with an added rotating gripper assembly and a rotating drive mechanism; Figure 6 This is a schematic diagram of the rotating gripper assembly and the rotating drive mechanism according to an embodiment of the present invention.
[0017] Figure label: Pole 1; Base 100; Shielding device 200, shielding curtain 210, curtain unfolding and retracting mechanism 220, front shielding cover 230, rear shielding cover 240, winder 221, fixing strip 222, folding frame 223. Climbing device 300, fixed gripping bar mechanism 310, movable gripping bar assembly 320, lifting drive mechanism 330, movable gripping bar mechanism 321, movable seat 322, clamping claw 301, drive gear 302, drive rod 303, connecting rod 304, clamping drive motor 305. Rotary gripper assembly 400, rotary gripper mechanism 410, rotary seat 420; Rotary drive mechanism 500, arc gear 510, mating gear 520, rotary drive motor 530. Detailed Implementation
[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0020] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.
[0022] Reference Figures 1 to 4 A pole-climbing shielding device for overhead line operations includes: a base 100, a shielding device 200, and a pole-climbing device 300. The shielding device 200 is disposed on the top of the base 100 and includes a shielding curtain 210 and a curtain unfolding and retracting mechanism 220. The shielding curtain 210 can be unfolded and retracted relative to the base 100. The curtain unfolding and retracting mechanism 220 is connected to the shielding curtain 210 and is used to drive the shielding curtain 210 to unfold and retract. The pole climbing device 300 is disposed on the base 100 and located below the shielding device 200. The pole climbing device 300 includes a fixed gripping rod mechanism 310, a movable gripping rod assembly 320, and a lifting drive mechanism 330. The fixed gripping rod mechanism 310 is disposed on the base 100, and the movable gripping rod assembly 320 is movably disposed on the base 100. The movable gripping rod assembly 320 is provided with a movable gripping rod mechanism 321. The fixed gripping rod mechanism 310 and the movable gripping rod mechanism 321 are used to clamp and release the pole 1. The lifting drive mechanism 330 is disposed between the base 100 and the movable gripping rod assembly 320, and the lifting drive mechanism 330 is used to drive the movable gripping rod assembly 320 and the base 100 to move up and down relative to each other.
[0023] When shielding of overhead lines is required, the fixed gripping rod mechanism 310 and the movable gripping rod mechanism 321 are clamped onto the pole 1, so that the fixed gripping rod mechanism 310 and the movable gripping rod mechanism 321 alternately release and clamp the pole 1. When the fixed gripping rod mechanism 310 clamps the pole 1 and the movable gripping rod mechanism 321 releases the pole 1, the lifting drive mechanism 330 raises the movable gripping rod assembly 320 relative to the base 100. After rising a predetermined distance, the movable gripping rod mechanism 321 of the movable gripping rod assembly 320 clamps again. Holding pole 1, the fixed gripping mechanism 310 releases pole 1, and the lifting drive mechanism 330 raises the base 100 relative to the movable gripping assembly 320. This process is repeated until the equipment gradually climbs to the required shielding height. Then, both the fixed gripping mechanism 310 and the movable gripping mechanism 321 simultaneously hold pole 1. The shielding curtain 210 is opened by the curtain unfolding and retracting mechanism 220, allowing construction personnel to perform operations under the shielding curtain 210, improving operational safety. After the construction personnel complete the work, the pole-climbing shielding equipment reverses its movement to return to the ground for retrieval. This pole-climbing shielding equipment can autonomously climb to the height of pole 1 and open the shielding curtain 210, eliminating the need for manual erection of the shielding curtain 210, making it very convenient to use.
[0024] In this embodiment, an induced current detection device is also included. This device is disposed on the lower side of the shielding device 200 and is used to detect whether an induced current exists on the lower side of the shielding device 200, thereby detecting the degree of shielding and further improving operational safety. In this embodiment, the induced current detection device can be configured with structures such as coils, current sensors, or electric field sensors to detect the induced current. Additionally, the induced current detection device can be equipped with alarms or displays to inform construction personnel of the detection results.
[0025] In this embodiment, two sets of shielding screens 210 and screen deployment / retraction mechanisms 220 are provided, spaced apart on the left and right. The two sets of shielding screens 210 and deployment / retraction mechanisms 220 are used to deploy the shielding screen 210 to the left and right, respectively. A pole clearance space is formed between the two sets of shielding screens 210 and deployment / retraction mechanisms 220. The fixed gripping mechanism 310 and the movable gripping mechanism 321 each include two clamping claws 301 arranged on the left and right sides, with a forward-facing clamping inlet / outlet between the ends of the clamping claws 301. A pole inlet / outlet communicating with the pole clearance space is formed between the front ends of the two sets of shielding screens 210 and deployment / retraction mechanisms 220. When the pole-climbing shielding device is installed on the pole 1, the device can be installed forward facing the pole 1. The pole 1 can enter the pole clearance space through the pole inlet / outlet and be clamped by the clamping claws 301 of the fixed gripping mechanism 310 and the movable gripping mechanism 321, respectively. With the above structure, the climbing shielding device can be easily and directly installed on pole 1 without a complicated disassembly and assembly process.
[0026] In this embodiment, the shielding device 200 further includes a front shielding cover 230 and a rear shielding cover 240, which are arranged one behind the other. The front and rear shielding covers 230 are positioned between the two sets of shielding curtains 210 and curtain unfolding / retracting mechanisms 220 and are used to cover the pole clearance area. A pole adaptation through-hole is formed between the front and rear shielding covers 230 for the pole 1 to pass through. The front shielding cover 230 is detachable. With this structure, the front and rear shielding plates can further shield the pole clearance area, thereby preventing a shielding blind zone below the pole clearance area. By making the front shielding cover 230 detachable, it can be removed before installing or removing the pole-climbing shielding device from the pole 1, thus not affecting the installation and removal of the device. In this embodiment, the front shielding cover 230 can be connected by means of fasteners, snap-fit, or plug-in, thereby making it detachable.
[0027] In other embodiments, the front shielding cover 230 can be divided into two plates, left and right. The ends of the two plates that are far apart from each other are hinged to two sets of shielding curtains 210 and curtain unfolding and retracting mechanisms 220. The ends of the two plates that are close to each other are magnetically attracted to each other. Thus, by opening the two plates to the upright state, the pole 1 can be avoided, and there will be no interference when the equipment is installed on the pole 1. After the equipment is installed on the pole 1, the two plates are laid flat and magnetically attracted to each other, thereby achieving the function of shielding.
[0028] In this embodiment, the curtain unfolding and retracting mechanism 220 includes a winder 221, a fixed edge strip 222, a folding frame 223, and a folding frame drive mechanism. The winder 221 is fixed to the base 100, and the shielding curtain 210 is wound up to the winder 221. The fixed edge strip 222 is fixed to one side of the shielding curtain 210. The fixed edge strip 222 is connected to the winder 221 or the base 100 via the folding frame 223. When the folding frame 223 unfolds, it can move the fixed edge strip 222 away from the winder 221 to pull out and unfold the shielding curtain 210. When the folding frame 223 folds, it can move the fixed edge strip 222 closer to the winder 221 to allow the winder 221 to wind up the shielding curtain 210. The folding frame drive mechanism is disposed on the winder 221 or the base 100 and is used to drive the folding frame 223 to unfold and fold. The above-described curtain unfolding and retracting mechanism 220 has a simple structure and is easy to implement.
[0029] In some embodiments, the shielding curtain 210 may be a flexible curtain structure capable of shielding electromagnetic fields, such as a woven fabric with a metal layer; in some embodiments, the shielding curtain 210 may be grounded to obtain a good shielding effect. The grounding method may be, for example, by setting a sufficiently long connecting wire to ensure that the connecting wire can hang down to the ground during the pole climbing process.
[0030] In one embodiment, the folding frame 223 may include a first link and a second link. One end of the first link is hinged to the retractor 221 or the base 100, and one end of the second link is hinged to the other end of the first link. The other end of the second link is hinged to the fixed edge strip 222. Two sets of the first and second links are provided, corresponding to the two ends of the fixed edge strip 222 respectively. The folding frame drive mechanism can drive the first link to swing, thereby opening or closing the angle between the first and second links to achieve unfolding and folding. This can then drive the fixed edge strip 222 to move, enabling the shielding curtain 210 to be opened or allowed to be closed by the retractor 221. Specifically, the folding frame drive mechanism may use a motor to drive the first link to swing. In other embodiments, the folding frame drive mechanism may also use other structures, such as a linear motor or an electric push rod that directly pushes and pulls the fixed edge strip 222.
[0031] It is conceivable that the folding frame 223 is not limited to the structure described above. For example, it can use a telescopic rod, with the two ends of the telescopic rod connected to the fixed edge strip 222 and the winder 221 or the base 100, respectively. The folding frame drive mechanism is a linear actuator structure that drives the telescopic rod to extend and retract, thereby directly pushing the fixed edge strip 222 closer to and further away from the winder 221.
[0032] In embodiments, the winder 221 can be an electric winder, or in some embodiments, an elastic winder, so that when the fixed edge strip 222 approaches the winder 221, the shielding curtain 210 can be actively wound up or wound up by the recovery of elasticity. There are many existing embodiments of the winder 221 for winding the curtain in the art, which will not be described in detail here. Those skilled in the art can configure it according to actual conditions. In embodiments, the winder 221 can serve as a structural support, used for connection to the upper end of the base 100 and for connection of the front shielding cover 230.
[0033] In this embodiment, two movable gripping bar assemblies 320 are provided and arranged in the vertical direction, thereby providing multiple gripping points and improving the stability of the climbing bar movement.
[0034] In this embodiment, two lifting drive mechanisms 330 are provided and are configured one-to-one with the movable gripper assembly 320, so as to independently drive the corresponding movable gripper assembly 320 and the base 100 to lift and lower relative to each other. Using the above structure, when climbing the pole, when the fixed gripping mechanism 310 clamps the pole 1, the movable gripping mechanism 321 of the upper movable gripping assembly 320 releases the pole 1, while the movable gripping mechanism 321 of the lower movable gripping assembly 320 keeps clamping the pole 1. The upper movable gripping assembly 320 is raised relative to the base 100 by its corresponding lifting drive mechanism 330, and then clamps the pole 1 again by the movable gripping mechanism 321. The lower movable gripping assembly 320 releases the pole 1, and is raised relative to the base 100 by its corresponding lifting drive mechanism 330, and then clamps the pole 1 again by the movable gripping mechanism 321. Then, the lifting drive mechanisms 330 of both movable gripping assemblies 320 simultaneously drive the base 100 to be raised. This process is repeated to climb the pole. Since both the movable grab bar assembly 320 and the base 100 have two positions that clamp the pole 1 when it is in the lifting position, the pole climbing action is more stable.
[0035] In one embodiment, the two movable gripping rod assemblies 320 are disposed on the lower side of the fixed gripping rod mechanism 310. In other embodiments, the two movable gripping rod assemblies 320 may be disposed on the upper and lower sides of the fixed gripping rod mechanism 310 respectively, or both may be disposed on the upper side of the fixed gripping rod mechanism 310. The specific configuration can be made according to the actual situation.
[0036] It is conceivable that in some embodiments, the movable gripping rod assembly 320 and the lifting drive mechanism 330 may only be provided as one set. In addition, in some embodiments, the lifting drive mechanism 330 may only be provided as one to correspond to two movable gripping rod assemblies 320 at the same time, so that the two movable gripping rod assemblies 320 are synchronously raised and lowered relative to the base 100, which can provide multi-point gripping while keeping the lifting drive structure relatively simple.
[0037] In this embodiment, the lifting drive mechanism 330 includes a lead screw, a lead screw nut, and a lifting drive motor. The lead screw is vertically mounted and rotatably mounted on the base 100. The lead screw nut is fixed to the movable gripper assembly 320 and threadedly connected to the lead screw. The lifting drive motor is mounted on the base 100 and drives the lead screw to rotate. The lifting drive mechanism 330 described above has a simple structure and stable operation. In this embodiment, the output shaft of the lifting drive motor can be coaxially fixed to the lead screw via a coupling, or it can be connected to the lead screw via a gear set, belt drive, or other means. When two movable gripper assemblies 320 are provided, and two corresponding lifting drive mechanisms 330 are provided, the lead screws of the two lifting drive mechanisms 330 can be arranged coaxially, resulting in a compact structure. When two movable gripper assemblies 320 correspond to one lifting drive mechanism 330, two lead screw nuts can be threaded onto the lead screw to connect the two movable gripper assemblies 320.
[0038] It is conceivable that the lifting drive mechanism 330 is not limited to the above-described implementation. For example, it can employ a rack and pinion mechanism and a lifting drive motor. The rack is vertically fixed to the base 100, and the lifting drive motor is fixed to the movable gripper assembly 320. The output shaft of the lifting drive motor is equipped with a gear that meshes with the rack, thus achieving the function of the lifting drive mechanism 330. With the rack and pinion structure, when two movable gripper assemblies 320 correspond to two lifting drive mechanisms 330 respectively, the racks of the two lifting drive mechanisms 330 can form a single, integrally molded rack. The two movable gripper assemblies 320 move on the same rack, simplifying the structure and increasing the lifting range. When using the rack and pinion structure, multiple locking holes can be vertically formed in the base 100. The movable gripper assembly 320 is equipped with a telescopic locking pin, electrically controlled. After relative movement between the movable gripper assembly 320 and the base 100, the locking pin inserts into the locking hole for positioning, ensuring positional stability. When relative lifting is required, the locking pin is controlled to retract from the locking hole.
[0039] It is understood that there are many other implementations of the drive mechanism for achieving relative lifting and lowering of two components in this field, and those skilled in the art can configure it according to the actual situation.
[0040] In this embodiment, the fixed gripping mechanism 310 includes a gripping claw 301, a drive gear 302, a drive rod 303, a connecting rod 304, and a gripping drive motor 305. The drive gear 302 is pivotally mounted on the base 100. One end of the drive rod 303 is fixed to the drive gear 302 and extends radially out of the outer periphery of the drive gear 302. The gripping claw 301 includes a claw body and an extension connected at one end to the claw body. The other end of the drive rod 303 is connected to the other end of the extension. The connecting rod 304 is hinged, with one end hinged to the base 100 and the other end hinged to the connection between the extension and the claw body. Two sets of clamping claws 301, drive gears 302, drive rods 303, and connecting rods 304 are arranged symmetrically. The two drive gears 302 in each set mesh with each other, and the claw bodies of the two clamping claws 301 in each set enclose a clamping position for the electric rod. A clamping drive motor 305 is mounted on the base 100 and drives one of the drive gears 302 to rotate in both directions. When the clamping drive motor 305 drives one of the drive gears 302 to rotate in both directions, it can cause the other drive gear 302 to rotate in the opposite direction, thereby causing the two drive rods 303 to swing symmetrically. The two drive rods 303, through the connecting rods 304, drive the two clamping claws 301 to open or close, thereby releasing or clamping the electric rod 1. The above-described fixed gripping rod mechanism 310 has a simple structure and is easy to implement.
[0041] In this embodiment, the clamping drive motor 305 is fixed to the base 100, and its output shaft is connected to a shaft gear that meshes with one of the drive gears 302, thereby driving the drive gear 302 to rotate in both directions. Of course, it is conceivable that in other embodiments, the clamping drive motor 305 may also drive the drive gear 302 to rotate in both directions through other linkage structures, such as belt drive or crank-rocker mechanism, and the specific configuration can be made according to the actual situation.
[0042] In this embodiment, the movable gripper assembly 320 includes a movable seat 322, which is movably mounted on the base 100. A movable gripper mechanism 321 is mounted on the movable seat 322, and a lifting drive mechanism 330 is connected to the movable seat 322. The movable gripper mechanism 321 includes a clamping claw 301, a drive gear 302, a drive rod 303, a connecting rod 304, and a clamping drive motor 305. The drive gear 302 is pivotally mounted on the movable seat 322. One end of the drive rod 303 is fixed to the drive gear 302 and extends radially outward from the outer periphery of the drive gear 302. The clamping claw 301... The mechanism includes a claw body and an extension connected to one end of the claw body. The other end of a drive rod 303 is hinged to the other end of the extension. One end of a connecting rod 304 is hinged to a movable seat 322, and the other end is hinged to the connection point between the extension and the claw body. Two sets of clamping claws 301, drive gears 302, drive rods 303, and connecting rods 304 are arranged symmetrically on the left and right. The two drive gears 302 in each set mesh with each other. The claw bodies of the two clamping claws 301 in each set enclose a clamping position. A clamping drive motor 305 is mounted on the movable seat 322 and is used to drive one of the drive gears 302 to rotate in both directions. The structure of the movable gripping rod mechanism 321 is similar to that of the fixed gripping rod mechanism 310; both structures are relatively simple and easy to implement.
[0043] In one embodiment, the movable seat 322 can be slidably mounted on the base 100 via vertically arranged guide rods, thereby enabling the movable gripper assembly 320 to move vertically relative to the base 100. In other embodiments, the movable seat 322 can also be mounted vertically on the base 100 via a structure such as a linear guide rail or a sliding block.
[0044] In this embodiment, the clamping drive motor 305 of the movable gripping lever mechanism 321 can be implemented with reference to the clamping drive motor 305 of the fixed gripping lever mechanism 310, which will not be described in detail here.
[0045] It is conceivable that in other embodiments, the fixed gripping rod mechanism 310 and the movable gripping rod mechanism 321 are not limited to the above-described implementation methods. For example, some electric grippers may be used, with two gripping claws 301 installed to grip the pole 1. In the art, there are many implementation methods for achieving the gripping and releasing of objects, and those skilled in the art can configure them according to actual conditions.
[0046] In actual construction sites, situations are complex. During the climbing process of the pole-climbing shielding equipment, obstacles are easily encountered, or the position of the shielding curtain 210 needs to be adjusted during actual construction operations. To improve the obstacle avoidance capability of the pole-climbing shielding equipment and increase the adjustability of the shielding position, the following structure can be adopted (see attached diagram). Figures 5 to 6 ): In this embodiment, the pole-climbing shielding device further includes a rotating gripping rod assembly 400 and a rotating drive mechanism 500. The rotating gripping rod assembly 400 is provided with a rotating gripping rod mechanism 410, which is used to clamp and release the pole 1. The rotating gripping rod assembly 400 is movably arranged relative to the base 100 along an arc trajectory. The central axis of the arc trajectory coincides with the axis of the pole 1 when the rotating gripping rod mechanism 410 clamps the pole 1. The rotating drive mechanism 500 is disposed between the base 100 and the rotating gripping rod assembly 400, and is used to drive the base 100 and the rotating gripping rod assembly 400 to adjust their relative positions along the arc trajectory.
[0047] During the pole climbing process of the shielding equipment, when encountering obstacles that need to be avoided or when adjusting the position of the shielding curtain 210 during actual construction work, the fixed gripping mechanism 310 and the movable gripping mechanism 321, along with the rotating gripping mechanism 410, can alternately clamp and release the pole 1. When the fixed gripping mechanism 310 and the movable gripping mechanism 321 clamp the pole 1 while the rotating gripping mechanism 410 releases the pole 1, the rotating drive mechanism 500 causes the rotating gripping assembly 400 to move relative to the base 100 along an arc trajectory, thereby rotating around the pole 1. At a predetermined angle, the rotating gripping rod mechanism 410 clamps the pole 1, while the fixed gripping rod mechanism 310 and the movable gripping rod mechanism 321 release the pole 1. The rotating drive mechanism 500 causes the base 100, along with the fixed gripping rod mechanism 310 and the movable gripping rod assembly 320, to move relative to the rotating gripping rod assembly 400 along an arc trajectory, thereby further rotating the pole 1 by a predetermined angle. Through several such actions, the pole-climbing shielding device can be adjusted to different angular positions around the pole 1, thereby avoiding obstacles or adjusting the position of the shielding curtain 210. By adding the rotating gripping rod assembly 400 and the rotating drive mechanism 500, the rotational adjustment position of the pole-climbing shielding device can be achieved with a simple structure, making it easy to implement.
[0048] In this embodiment, the structure of the rotating gripping rod mechanism 410 is similar to that of the fixed gripping rod mechanism 310 and the movable gripping rod mechanism 321. It can be implemented with reference to the aforementioned embodiments, and will not be described again here.
[0049] In this embodiment, the rotary gripper assembly 400 includes a rotary base 420, a rotary gripper mechanism 410 disposed on the rotary base 420, and the rotary base 420 is movably disposed relative to the base 100 along an arc trajectory. The rotary drive mechanism 500 includes an arc gear 510, a mating gear 520, and a rotary drive motor 530. The arc gear 510 is fixedly disposed on the base 100 and extends along an arc trajectory. The rotary drive motor 530 is fixedly disposed on the rotary base 420, and the mating gear 520 is fixed to the output shaft of the rotary drive motor 530, meshing with the arc gear 510. When the rotary drive motor 530 drives the mating gear 520 to rotate forward and backward, the relative angle between the rotary base 420 and the base 100 can be adjusted by driving the arc gear 510 to move relative to each other along an arc trajectory.
[0050] It is conceivable that in other embodiments, the rotary drive mechanism 500 is not limited to the structure described above. For example, a telescopic drive combined with a linkage mechanism can be used to push and pull between the base 100 and the rotating seat 420, thereby realizing the relative movement of the base 100 and the rotary gripper assembly 400.
[0051] In one embodiment, an arc-shaped groove can be formed in one of the base 100 and the rotating seat 420, and a sliding shaft or slider can be provided in the other. The sliding shaft or slider and the arc-shaped groove can slide together, thereby enabling relative movement between the base 100 and the rotating seat 420 along an arc trajectory.
[0052] In some embodiments, to better achieve obstacle avoidance, the following structure can be further adopted: the middle part of the winding device 221 is pivotally connected to the base 100, the folding frame 223 is connected to the winding device 221, the base 100 is provided with a drive motor, the drive motor is linked to the winding device 221 to drive it to stand upright and lie flat, the front shielding cover plate 230 and the rear shielding cover plate 240 each include two left and right plates, the opposite ends of the left and right plates are respectively connected to the left and right winding devices 221 by electric hinges. When obstacle avoidance is required during pole climbing, the left and right plates that make up the front shielding cover plate 230 and the rear shielding cover plate 240 can be driven to rotate and stand upright, thereby avoiding the pole 1, and then the winding device 221 is driven to stand upright, thereby reducing the occupied area and improving the obstacle avoidance capability.
[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A pole-climbing shielding device for overhead line operations, characterized in that, include: Base (100); A shielding device (200) is disposed on the top of the base (100). The shielding device (200) includes a shielding curtain (210) and a curtain unfolding and retracting mechanism (220). The shielding curtain (210) can be unfolded and retracted relative to the base (100). The curtain unfolding and retracting mechanism (220) is connected to the shielding curtain (210) and is used to drive the shielding curtain (210) to unfold and retract. A pole climbing device (300) is disposed on the base (100) and located below the shielding device (200). The pole climbing device (300) includes a fixed gripping rod mechanism (310), a movable gripping rod assembly (320), and a lifting drive mechanism (330). The fixed gripping rod mechanism (310) is disposed on the base (100). The movable gripping rod assembly (320) is movably disposed on the base (100). The movable gripping rod assembly (320) is provided with a movable gripping rod mechanism (321). The fixed gripping rod mechanism (310) and the movable gripping rod mechanism (321) are used to clamp and release the pole (1). The lifting drive mechanism (330) is disposed between the base (100) and the movable gripping rod assembly (320). The lifting drive mechanism (330) is used to drive the movable gripping rod assembly (320) and the base (100) to move up and down relative to each other.
2. The pole-climbing shielding device for overhead line operations according to claim 1, characterized in that: It also includes an induced current detection device, which is disposed on the lower side of the shielding device (200) and is used to detect whether there is an induced current on the lower side of the shielding device (200).
3. The pole-climbing shielding device for overhead line operations according to claim 1, characterized in that: Two sets of shielding screens (210) and screen unfolding / retracting mechanisms (220) are provided and are spaced apart on the left and right. The two sets of shielding screens (210) and screen unfolding / retracting mechanisms (220) are respectively used to unfold the shielding screens (210) to the left and to the right. A pole clearance space is formed between the two sets of shielding screens (210) and screen unfolding / retracting mechanisms (220). The fixed gripping rod mechanism (310) and the movable gripping rod mechanism (321) each include two gripping claws (301) arranged on the left and right. A forward gripping inlet and outlet is formed between the ends of the gripping claws (301). A pole inlet and outlet communicating with the pole clearance space is formed between the front ends of the two sets of shielding screens (210) and screen unfolding / retracting mechanisms (220).
4. The pole-climbing shielding device for overhead line operations according to claim 3, characterized in that: The shielding device (200) further includes a front shielding cover plate (230) and a rear shielding cover plate (240). The front shielding cover plate (230) and the rear shielding cover plate (240) are arranged one in front of the other. The front shielding cover plate (230) and the rear shielding cover plate (240) are arranged between the two sets of shielding curtains (210) and the curtain unfolding and retracting mechanism (220) and are used to cover the pole clearance position. The front shielding cover plate (230) and the rear shielding cover plate (240) are enclosed to form a pole adaptation through hole for the power pole (1) to adapt and pass through. The front shielding cover plate (230) is detachable.
5. The pole-climbing shielding device for overhead line operations according to claim 1 or 3, characterized in that: The curtain unfolding and retracting mechanism (220) includes a winder (221), a fixing strip (222), a folding frame (223), and a folding frame drive mechanism. The winder (221) is fixed to the base (100), and the shielding curtain (210) is wound up by the winder (221). The fixing strip (222) is fixed to one side of the shielding curtain (210), and the fixing strip (222) is connected to the winder (221) or the base (100) through the folding frame (223). When the folding frame (223) is unfolded, it can drive the fixed edge strip (222) away from the winder (221) to pull out and unfold the shielding curtain (210). When the folding frame (223) is folded, it can drive the fixed edge strip (222) closer to the winder (221) to allow the winder (221) to wind up the shielding curtain (210). The folding frame drive mechanism is disposed on the winder (221) or the base (100) and is used to drive the folding frame (223) to unfold and fold.
6. The pole-climbing shielding device for overhead line operations according to claim 1, characterized in that: The movable gripper assembly (320) has two parts and is arranged in the vertical direction.
7. The pole-climbing shielding device for overhead line operations according to claim 6, characterized in that: Two lifting drive mechanisms (330) are provided and are configured one-to-one with the movable gripper assembly (320) to independently drive the corresponding movable gripper assembly (320) and the base (100) to lift relative to each other.
8. The pole-climbing shielding device for overhead line operations according to claim 1, characterized in that: The fixed gripping mechanism (310) includes a gripping claw (301), a drive gear (302), a drive rod (303), a connecting rod (304), and a gripping drive motor (305). The drive gear (302) is pivotally mounted on the base (100). One end of the drive rod (303) is fixed to the drive gear (302) and extends radially out of the outer periphery of the drive gear (302). The gripping claw (301) includes a claw body and an extension connected to the claw body at one end. The other end of the drive rod (303) is hinged to the other end of the extension. One end of the connecting rod (304) is hinged to the base (100), and the other end is hinged to the connection between the extension and the claw body. The clamping claw (301), the driving gear (302), the driving rod (303) and the connecting rod (304) are arranged in two sets and are symmetrically arranged on the left and right. The two driving gears (302) in the two sets mesh with each other. The claw bodies of the two clamping claws (301) in the two sets enclose each other to form a pole clamping position. The clamping drive motor (305) is arranged on the base (100) and is used to drive one of the driving gears (302) to rotate forward and backward.
9. The pole-climbing shielding device for overhead line operations according to claim 1, characterized in that: The movable gripper assembly (320) includes a movable seat (322), which is movably mounted on the base (100). The movable gripper mechanism (321) is mounted on the movable seat (322), and the lifting drive mechanism (330) is connected to the movable seat (322). The movable gripper mechanism (321) includes a clamping claw (301), a drive gear (302), a drive rod (303), a connecting rod (304), and a clamping drive motor (305). The drive gear (302) is pivotally mounted on the movable seat (322). One end of the drive rod (303) is fixed to the drive gear (302) and extends radially out of the outer periphery of the drive gear (302). The clamping claw (301) is mounted on the movable seat (322). 301) includes a claw body and an extension connected to the claw body at one end. The other end of the drive rod (303) is hinged to the other end of the extension. One end of the connecting rod (304) is hinged to the movable seat (322), and the other end is hinged to the connection between the extension and the claw body. The clamping claw (301), the drive gear (302), the drive rod (303), and the connecting rod (304) are arranged in two sets and are symmetrically arranged on the left and right. The two drive gears (302) in the two sets mesh with each other. The claw bodies of the two clamping claws (301) in the two sets enclose each other to form an electric rod clamping position. The clamping drive motor (305) is arranged on the movable seat (322) and is used to drive one of the drive gears (302) to rotate forward and backward.
10. The pole-climbing shielding device for overhead line operations according to claim 1, characterized in that: The pole climbing shielding device further includes a rotating gripping rod assembly (400) and a rotating drive mechanism (500). The rotating gripping rod assembly (400) is provided with a rotating gripping rod mechanism (410), which is used to clamp and release the pole (1). The rotating gripping rod assembly (400) is movably arranged relative to the base (100) along an arc trajectory. The central axis of the arc trajectory coincides with the axis of the pole (1) when the rotating gripping rod mechanism (410) clamps the pole (1). The rotating drive mechanism (500) is disposed between the base (100) and the rotating gripping rod assembly (400), and is used to drive the base (100) and the rotating gripping rod assembly (400) to adjust their relative positions along the arc trajectory. The rotating gripper assembly (400) includes a rotating base (420), and the rotating gripper mechanism (410) is disposed on the rotating base (420). The rotating base (420) is movably disposed relative to the base (100) along the arc trajectory. The rotating drive mechanism (500) includes an arc gear (510), a mating gear (520), and a rotating drive motor (530). The arc gear (510) is fixedly disposed on the base (100) and extends along the arc trajectory. The rotating drive motor (530) is fixedly disposed on the rotating base (420). The mating gear (520) is fixed to the output shaft of the rotating drive motor (530), and the mating gear (520) meshes with the arc gear (510).