Unmanned aerial vehicle assisted distribution network insulation shearing device

Abstract

The application discloses an unmanned aerial vehicle auxiliary distribution network insulation shearing device, which comprises an insulation rod assembly, a guide rod, a buffer assembly and a shearing assembly. The shearing assembly comprises a guide frame and an electric shearing unit. The guide frame is arranged at the top end of the electric shearing unit, and a cutter is arranged in the guide frame. The electric shearing unit comprises a shell, a driving piece and a cutter. An annular mounting groove is formed in the shell. The cutting edge plane of the cutter is coplanar with or parallel to the guide-in direction of the guide opening. The buffer assembly is sleeved on the guide rod, and the buffer assembly comprises a locking and adjusting unit. The locking and adjusting unit is connected with the electric shearing unit and cooperates with the annular mounting groove to form an adjustable locking structure. Through cooperation of the insulation rod assembly and the buffer assembly, the shearing reaction force is absorbed and released by the buffer assembly. The adjustable locking structure keeps the assembly posture of the shearing assembly stable, so that the cable is stably guided in and sheared, and the stability and consistency of high-altitude shearing operation are improved.

Description

Technical Field

[0001] This invention relates to the field of cable cutting technology, and more specifically to a drone-assisted distribution network insulation cutting device. Background Technology

[0002] In power distribution network operations, cable cutting is a crucial step in ensuring the safe operation and smooth upgrading of power lines. This typically requires cutting or connecting cables while they are energized or de-energized. Current methods primarily involve personnel climbing poles or using insulated boom trucks to raise insulated operating rods near the cables, then using handheld electric shears or mechanical cutting tools to perform the cut. Alternatively, extended rigid robotic arms are used, with the cutting mechanism fixed to the end, and ground personnel or mechanical devices controlling the end-effector's position. Currently, drone platforms are increasingly being used for power distribution network inspection and auxiliary operations. Some solutions attempt to simply attach electric shears or other tools to the bottom or frame of the drone, allowing the drone to approach and cut the cables. However, these solutions generally suffer from the following problems:

[0003] (1) Existing UAV-assisted shearing devices mostly use rigid support arms or simple rotating joints to directly hang the shearing components under the body. They lack a dedicated isolation link composed of multiple insulating rods and flexible connections, which cannot guarantee the safe insulation distance between the cable and the UAV.

[0004] (2) Most shear components are rigidly installed and lack controllable sliding stroke and elastic damping mechanism along the rod direction, which cannot effectively absorb and distribute shear impact force;

[0005] (3) The cable guide mechanism is mostly a single opening or a ring, and the geometric relationship between the cable and the blade is not carefully designed. When the cable is close, friction or deviation from the blade is likely to occur, affecting the reliability of the shearing. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the purpose of this invention is to provide a drone-assisted distribution network insulation shearing device to solve the problems of insufficient insulation isolation and flight attitude stability, lack of effective buffering of shearing impact during operation, and poor reliability of cable insertion and positioning in existing drone-assisted shearing devices.

[0007] To achieve the above objectives, the present invention provides a drone-assisted power grid insulation shearing device, comprising:

[0008] An insulating rod assembly, the top of which swings within a predetermined angle range and is connected to the drone body;

[0009] The guide rod is rotatably connected to the bottom end of the insulating rod assembly;

[0010] A buffer assembly, which is sleeved on the guide rod and reciprocates along the axial direction of the guide rod; and

[0011] A shearing assembly connected to the outside of the buffer assembly, the shearing assembly including a guide frame with a guide opening and an electric shearing unit;

[0012] The guide frame is disposed at the top of the electric shearing unit. The electric shearing unit includes a housing, a drive unit disposed within the housing, and a cutter disposed at the top of the drive unit. An annular mounting groove is provided on the housing. The cutter is disposed within the guide frame, and the cutting plane of the cutter is coplanar or parallel to the guide opening's guide direction.

[0013] The buffer assembly includes a locking adjustment unit, which is fixedly disposed on the side of the buffer assembly near the shearing assembly and connected to the electric shearing unit to form an adjustable locking structure.

[0014] Furthermore, the insulating rod assembly includes:

[0015] Connector, which rotates to connect with the drone body; and

[0016] Several insulating rods are connected to each other via a connecting module.

[0017] Furthermore, each of the connection modules includes:

[0018] A sliding cap, which has a cylindrical structure, is fitted onto the end of the insulating rod, and the outer end face of the sliding cap is provided with an ear plate; and

[0019] A pair of parallel connecting pieces are arranged one above the other on the outer side of the ear plate and connected to the ear plates on the outer end faces of two adjacent sliding caps via a pivot.

[0020] The ear plate and the connecting piece are provided with a damping pad; the rotating shaft passes through the waist-shaped holes opened at both ends of the connecting piece.

[0021] Furthermore, the buffer component also includes:

[0022] A sliding module, sleeved on the guide rod, reciprocates between stop blocks at both ends of the guide rod; and

[0023] A limiting unit, which is parallel to the axial direction of the guide rod;

[0024] The limiting unit includes a connecting rod and a pair of sensors. The two ends of the connecting rod are respectively connected to the two stop blocks. The two sensors are installed at a distance along the length of the connecting rod, and each sensor is provided with a guide roller at its bottom end.

[0025] Furthermore, the sliding module includes:

[0026] A pulley frame, comprising a top plate, a bottom plate, and a baffle connecting the top plate and the bottom plate;

[0027] At least two pulleys, each having an arc-shaped groove on its outer circumference adapted to the outer diameter of the guide rod, the pulleys being connected to the two baffles via pulley shafts; and

[0028] The guide slide is fixedly mounted on a U-shaped frame structure of the aforementioned baffle;

[0029] The guide roller is in close contact with the inner U-shaped side of the guide slide plate and rolls along the inner U-shaped side under the action of the sliding module.

[0030] Furthermore, the sliding module also includes a damping unit, which is arranged in pairs and includes a damping wheel frame, a damping wheel, a first elastic element, and a second elastic element;

[0031] The damping wheel frame is fixed to both ends of the top plate;

[0032] The damping wheel is rotatably mounted on the damping wheel frame via a wheel axle, and the damping wheel has a dumbbell-shaped structure;

[0033] The first elastic element is sleeved on the damping shaft of the damping wheel frame, with one end fixedly connected to the top plate and the other end fixedly connected to the damping wheel frame, so that the damping wheel is biased toward the guide rod and pressed against the outer circumference of the guide rod in the pre-tightened state.

[0034] The two ends of the second elastic element are fixedly connected to the stop block at the upper end of the guide rod and the upper part of the baffle, respectively.

[0035] Furthermore, the locking adjustment unit includes:

[0036] A connecting plate is fixedly installed on the base plate. The bottom of the connecting plate is provided with an inverted U-shaped adjustment groove, and the connecting plate on the outer periphery of the U-shaped adjustment groove is provided with a first plum blossom tooth.

[0037] The clamping block includes a first semi-circular clamping ring and a mounting base with a second perforated tooth pattern;

[0038] A second semicircular clamping ring, which is connected to the first semicircular clamping ring via a connector to form a clamping ring embedded in the annular mounting groove; and

[0039] A locking screw passes through the U-shaped adjustment groove and is fixedly connected to the clamping block;

[0040] The first plum blossom teeth and the second plum blossom teeth are arranged in a ring and interlocked.

[0041] Furthermore, the guide frame is installed at the upper end of the housing, and the guide frame includes a mounting member fixedly connected to the housing, and guide plates installed on both sides of the mounting member and parallel to the baffle.

[0042] The guide plate is a hollowed-out plate with a V-shaped top, and a space for accommodating the cutting tool is formed between the two guide plates.

[0043] Furthermore, the drone-assisted power distribution network insulation shearing device also includes a monitoring unit installed above the buffer assembly.

[0044] Beneficial effects: Compared with the prior art, the present invention, through the coordinated action of the insulating rod assembly that rotates with the UAV and the buffer assembly sleeved on the guide rod, enables the shearing reaction force to be transmitted axially along the guide rod and absorbed and released by the buffer assembly, reducing the disturbance of the reaction force to the UAV's flight attitude; at the same time, the guide frame of the shearing assembly cooperates with the electric shearing unit to guide the cable to be cut along the guide opening and position it in the cutting area of ​​the blade; furthermore, the locking adjustment unit on the buffer assembly cooperates with the annular mounting groove of the electric shearing unit housing to form an adjustable locking structure, so that the relative position and angle of the guide opening and the blade edge remain stable under vibration and impact conditions, reducing the risk of shearing deviation and jamming, and improving the stability and consistency of high-altitude shearing operations. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0046] Figure 1 A schematic diagram of a drone-assisted power grid insulation shearing device.

[0047] Figure 2 This is a partial schematic diagram of the insulating rod assembly;

[0048] Figure 3 This is a schematic diagram of the connection module structure;

[0049] Figure 4 This is a schematic diagram of the overall structure of the buffer component and the shear component;

[0050] Figure 5 This is a schematic diagram of the sliding module structure;

[0051] Figure 6 This is a schematic diagram of the damping unit structure;

[0052] Figure 7 This is a schematic diagram of the limiting unit structure;

[0053] Figure 8 This is a schematic diagram of the sensor and guide slide structure;

[0054] Figure 9 This is a schematic diagram of the locking adjustment unit structure;

[0055] Figure 10 This is a magnified view of a portion of the locking adjustment unit;

[0056] Figure 11 This is a schematic diagram of the shearing component structure.

[0057] Explanation of reference numerals in the attached figures:

[0058] 1 - Insulating rod assembly, 11 - Connector, 12 - Insulating rod, 13 - Connecting module, 131 - Sliding cap, 1311 - Ear plate, 132 - Connecting piece, 133 - Damping pad, 134 - Rotating shaft;

[0059] 2 - Guide rod, 21 - Stop block;

[0060] 3 - Buffer assembly; 31 - Sliding module; 311 - Pulley frame; 3111 - Top plate; 3112 - Bottom plate; 3113 - Baffle; 312 - Pulley; 313 - Guide slide plate; 314 - Damping unit; 3141 - Damping wheel frame; 3142 - Damping wheel; 3143 - First elastic element; 3144 - Damping shaft; 315 - Second elastic element; 32 - Limiting unit; 321 - Connecting rod; 322 - Sensing element; 323 - Guide roller; 33 - Locking adjustment unit; 331 - Connecting plate; 3311 - U-shaped adjustment groove; 3312 - First sprocket tooth; 332 - Clamping block; 3321 - First semi-circular clamping ring; 3322 - Mounting base; 3323 - Second sprocket tooth; 333 - Second semi-circular clamping ring; 334 - Locking screw;

[0061] 4 - Shearing assembly, 41 - Guide frame, 411 - Mounting component, 412 - Guide plate, 42 - Electric shearing unit, 421 - Housing, 4211 - Annular mounting groove, 422 - Drive component, 423 - Cutting tool;

[0062] 5 - Monitoring Unit. Detailed Implementation

[0063] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0064] like Figure 1 , Figure 4 and Figure 11As shown, this embodiment provides a drone-assisted power distribution network insulation shearing device, which aims to solve the problems of insufficient insulation isolation and flight attitude stability of existing drone-assisted shearing devices, lack of effective buffering of shearing impact during operation, and poor reliability of cable introduction and positioning, thereby affecting the safety and shearing quality of high-altitude shearing operations.

[0065] A drone-assisted power distribution network insulation shearing device is characterized by comprising an insulating rod assembly 1, the top of which swings within a predetermined angle range and is connected to the drone body; a guide rod 2, which is rotatably connected to the bottom end of the insulating rod assembly 1; a buffer assembly 3, which is sleeved on the guide rod 2 and reciprocates along the axial direction of the guide rod 2; and a shearing assembly 4, which is connected to the outside of the buffer assembly 3, wherein the shearing assembly 4 includes a guide frame 41 with a guide opening and an electric shearing unit 42.

[0066] The guide frame 41 is disposed at the top of the electric shearing unit 42. The electric shearing unit 42 includes a housing 421, a drive member 422 disposed within the housing 421, and a cutter 423 disposed at the top of the drive member 422. The housing 421 has an annular mounting groove 4211. The cutter 423 is disposed within the guide frame 41, and the cutting plane of the cutter 423 is coplanar or parallel to the guide opening's guide direction.

[0067] The buffer assembly 3 includes a locking adjustment unit 33, which is fixedly disposed on the side of the buffer assembly 3 near the shearing assembly 4 and connected to the electric shearing unit 42 to form an adjustable locking structure.

[0068] When the UAV-assisted power grid insulation shearing device of the present invention is used, the top end of the insulating rod assembly 1 is connected to the UAV body and swings within a predetermined angle range. The guide rod 2 is rotatably connected to the bottom end of the insulating rod assembly 1, so that the shearing end can be aligned accordingly when the UAV attitude changes or the working angle is adjusted. The buffer assembly 3 is sleeved on the guide rod and can reciprocate along the axial direction of the guide rod 2. The shearing assembly 4 is connected to the outside of the buffer assembly 3.

[0069] During operation, the drone is controlled to align the guide opening of the guide frame 41 with the cable to be cut. The cable enters the guide frame 41 along the guide opening's inlet direction and then enters the cutting area of ​​the cutter 423 within the guide frame 41. After the electric cutting unit 42 is activated, its drive unit 422 drives the cutter 423 to complete the cutting. Because the cutter 423 is located within the guide frame 41, and the cutting plane of the cutter 423 is coplanar or parallel to the inlet direction of the guide opening, the cable entry path matches the cutting plane, which is beneficial for achieving stable cutting.

[0070] The reaction force generated during shearing pushes the shearing assembly 4 and the buffer assembly 3 to displace along the axial direction of the guide rod 2, thereby mitigating the impact load and reducing the instantaneous disturbance of the reaction force to the UAV body. The locking adjustment unit 33 on the buffer assembly 3 is fixed on the side close to the shearing assembly 4 and connected to the electric shearing unit 42 to form an adjustable locking structure. The housing 421 of the electric shearing unit 42 has an annular mounting groove 4211. After the locking adjustment unit 33 cooperates with the annular mounting groove 4211, the assembly state between the electric shearing unit 42 and the buffer assembly 3 can be adjusted within a preset range and remains locked after adjustment, thus facilitating the adaptation to different incoming line directions and maintaining the stability of the shearing process.

[0071] like Figures 1 to 3 As shown, the insulating rod assembly 1 includes several insulating rod segments 12 connected in sequence. The upper ends of these segments are rotatably connected to the UAV body via connectors 11, allowing the entire insulating rod assembly 1 to have a predetermined degree of freedom of movement relative to the UAV body within a predetermined angle range. Adjacent insulating rod segments 12 are connected by connecting modules 13.

[0072] Each connecting module 13 includes a sliding cap 131 disposed at the ends of the two insulating rods 12 and a pair of connecting pieces 132 connecting the two sliding caps 131. Specifically, the sliding cap 131 is generally cylindrical, and its inner hole matches the outer diameter of the corresponding end of the insulating rod 12, fitting onto the end of the insulating rod 12 and coaxially arranged with the insulating rod 12. The outer end face of the sliding cap 131 integrally extends outward to form an ear plate 1311.

[0073] A pair of connecting plates 132 are strip-shaped plates, arranged parallel to each other along the axial direction of the insulating rod assembly 1, and located on the outer side of the ear plate 1311 respectively. The pair of connecting plates 132 are connected one above the other between the upper and lower sliding caps 131 of two adjacent insulating rod sections 12.

[0074] A damping pad 133 is sandwiched between each ear plate 1311 and its corresponding connecting piece 132. The damping pad 133 is a flexible elastic pad used to form an elastic partition between the ear plate 1311 and the connecting piece 132. When the insulating rod assembly 1 is subjected to vibration or impact during operation, the ear plate 1311 and the connecting piece 132 undergo elastic deformation through the damping pad 133, thereby providing a certain vibration reduction and buffering effect between adjacent insulating rod segments 12.

[0075] To allow controlled relative movement between adjacent insulating rod segments 12, each connecting piece 132 has a waist-shaped hole at both ends along its length, with the long axis of the waist-shaped hole parallel to the axis of the insulating rod assembly 1. The rotating shaft 134 passes sequentially through the waist-shaped hole at the end of the connecting piece 132 and the mounting hole on the corresponding ear plate 1311. On one hand, it forms a rotational fit with the ear plate 1311, allowing adjacent insulating rod segments 12 to swing around the rotating shaft 134 to accommodate fine adjustments to the drone's attitude and operating direction. On the other hand, the rotating shaft 134 has a pre-reserved sliding clearance along its long axis within the waist-shaped hole, allowing it to slide within a range along the long axis of the waist-shaped hole under external force.

[0076] In this embodiment, as Figure 4 As shown, the buffer assembly 3 is mounted on the guide rod 2, and its entire structure is arranged around the guide rod 2. It includes a sliding module 31, a limiting unit 32, and a locking adjustment unit 33. The sliding module 31 is sleeved on the outside of the guide rod 2 and slides back and forth along the axial direction of the guide rod 2 between the stop blocks 21 set at both ends of the guide rod 2. The limiting unit 32 is arranged parallel to the axis of the guide rod 2 and is used to constrain and detect the movement trajectory and stroke of the sliding module 31. The locking adjustment unit 33 is fixedly connected to the side of the sliding module 31 near the shearing assembly 4 and is used to adjust and fix the shearing assembly 4.

[0077] Specifically, such as Figure 4 and Figure 5 As shown, the sliding module 31 includes a pulley frame 311, at least two pulleys 312, and a guide plate 313. The pulley frame 311 includes a top plate 3111 and a bottom plate 3112 spaced apart along the axis of the guide rod 2, and a baffle 3113 connecting the top plate 3111 and the bottom plate 3112. The guide rod 2 passes between the top plate 3111 and the bottom plate 3112 and is centrally located inside the pulley frame 311. At least two pulleys 312 are rotatably mounted between the two baffles 3113 via pulley shafts. The rotation axis of the pulleys 312 is perpendicular to the axis of the guide rod 2, and the two pulleys 312 are located on opposite sides of the guide rod 2. Each pulley 312 has an arc-shaped groove machined on its outer circumference that matches the outer diameter of the guide rod 2. The radius of the arc at the bottom of the groove is slightly larger than the outer diameter of the guide rod 2 to ensure that the guide rod 2 can obtain reliable support when embedded in the groove and remain in contact with the pulley 312 when it rotates. Preferably, the pulley 312 is made of nylon or engineering plastic material, and the surface of the arc groove can be covered with a wear-resistant layer to reduce the frictional resistance during the axial sliding process of the guide rod 2.

[0078] like Figure 4 , Figure 7 and Figure 8As shown, the limiting unit 32 includes a connecting rod 321 and a pair of sensors 322. The connecting rod 321 is arranged parallel to the baffle 3113 on which the guide slide plate 313 is installed. The two ends of the connecting rod 321 are fixedly connected to the stop blocks 21 at both ends of the guide rod 2, preferably by bolts or pins, for easy installation and disassembly. The pair of sensors 322 are spaced apart along the length of the connecting rod 321. Each sensor 322 has a guide roller 323 installed at its lower end. The roller axis of the guide roller 323 is aligned with the pulley axis, and its outer circumference is cylindrical. It is used to cooperate with the guide slide plate 313 when the sliding module 31 moves to guide and limit the movement trajectory of the sliding module 31. As needed, the sensors 322 can integrate mechanical limit switches or proximity sensors to output position signals when the guide roller 323 moves to a predetermined position, providing status feedback for system control and alarm.

[0079] The guide slide plate 313 is fixedly installed on the outside of one of the baffles 3113, forming a U-shaped frame structure with the opening of the U-shaped frame facing the limiting unit 32. During assembly, the position of the guide slide plate 313 relative to the axis of the guide rod 2 is preset so that the cylindrical outer surface of the guide roller 323 in the limiting unit 32 is in close contact with the U-shaped inner surface of the guide slide plate 313 near the limiting unit 32. During the reciprocating motion of the sliding module 31 along the guide rod 2, the guide roller 323 rolls smoothly on the U-shaped inner surface of the guide slide plate 313, thereby guiding and constraining the movement direction of the sliding module 31.

[0080] In a preferred embodiment, the two sensors 322 are arranged sequentially along the length of the connecting rod 321 and are wirelessly connected to the alarm module of the UAV flight control system and / or the ground remote control terminal, respectively, to provide graded prompts on the actual position of the buffer assembly 3 on the guide rod 2.

[0081] Under the influence of the drone's ascent or shear reaction force, the sliding module 31 and the shearing component 4 it carries move away from the insulating rod assembly 1 relative to the guide rod 2, causing the guide roller 323 to move along the connecting rod 321. When the guide roller 323 first passes the position of the sensor 322 located near the upper end of the guide rod 2 and triggers the sensor 322, the remote control terminal issues a first-level alarm signal to remind the operator that the working stroke of the buffer assembly 3 has entered the vicinity of the upper boundary of the preset shearing operation range, and attention should be paid to controlling the drone's ascent. If the drone continues to ascend or the shear reaction force further increases, and the guide roller 323 continues to move away from the insulating rod assembly 1 and triggers the sensor 322 located near the lower end of the guide rod 2, then the sensor 322 enters the working state, the remote control terminal switches to the second-level urgent alarm, and can be set as needed to limit the drone from continuing to fly upwards carrying the device to prevent drone overload or damage to the device structure. In the attached diagram, the axial range between the two sensors 322 represents the safe position range of the buffer assembly 3 for suitable shearing operations. When operating within this safe range, the buffer assembly 3 can effectively counteract the shearing recoil force and balance the attitude of the UAV, ensuring the stability of the operation.

[0082] Based on the above, such as Figures 4 to 6 As shown, the sliding module 31 also includes a pair of damping units 314, which provide additional damping and buffering for the axial movement of the sliding module 31 along the guide rod 2. The damping unit 314 includes a damping wheel frame 3141 fixed to both ends of the top plate 3111, a damping wheel 3142 rotatably mounted on the damping wheel frame 3141, a first elastic element 3143 mounted on the damping shaft 3144, and a second elastic element 315 mounted on the stop block 21 and the baffle 3113. The damping wheel frame 3141 preferably adopts a plate-like or angle steel structure, and the damping wheel 3142 is rotatably mounted on the damping wheel frame 3141 via an axle. The damping wheel 3142 has a dumbbell-shaped structure, i.e., a larger diameter rim is formed at both ends of the wheel body, and a slightly smaller diameter connecting section is formed in the middle. The outer arc contour of the two end rims cooperates with the outer circumference of the guide rod 2, so that the guide rod 2 is located in the cavity between the two rims when the damping wheel 3142 is pressed against it.

[0083] Among them, the wheel axle is used to support the rotation of the damping wheel 3142, and the damping shaft 3144 is specifically used to mount the first elastic element 3143. The two are independent shafts.

[0084] The first elastic element 3143, preferably a torsion spring, is sleeved on the damping shaft 3144, with its two ends connected to the positioning holes on the top plate 3111 and the damping wheel frame 3141, respectively. In the initial assembly state, the first elastic element 3143 is in a pre-tightened state, biasing the damping wheel 3142 toward the guide rod 2, so that the outer circumference of the damping wheel 3142 continuously presses against the guide rod 2. When the sliding module 31 slides back and forth on the guide rod 2, the damping wheel 3142 rolls on the outer circumference of the guide rod 2, and the first elastic element 3143 provides a certain radial clamping force, forming frictional damping, which helps to suppress the inertial impact of the sliding module 31.

[0085] The second elastic element 315 is preferably a tension spring, one end of which is fixedly connected to the stop block 21 at the upper end of the guide rod 2, and the other end is fixedly connected to the baffle 3113 on one side. When the sliding module 31 moves under the action of the shear reaction force, the second elastic element 315 is gradually stretched and stores elastic potential energy; after the external force decreases or disappears, the second elastic element 315 contracts, pulling the sliding module 31 back, thereby enabling the shear assembly 4 to achieve axial buffer displacement and automatic reset.

[0086] When the sliding module 31 reciprocates along the guide rod 2, the direction of its movement is guided by the rolling support of the pulley frame 311 and the pulley 312; while the damping and elastic reset of the movement process are provided by the coordinated action of the first elastic element 3143, the second elastic element 315 and the damping wheel 3142.

[0087] like Figure 4 , Figure 9 and Figure 10 As shown, the locking adjustment unit 33 is fixed to the outer surface of the base plate 3112 on the side of the sliding module 31 near the shearing assembly 4, and is preferably connected to the mounting surface reserved on the base plate 3112 by bolts. The locking adjustment unit 33 includes a connecting plate 331, a clamping block 332, a second semi-circular clamping ring 333, and a locking screw 334.

[0088] The bottom of the connecting plate 331 is provided with an inverted U-shaped adjustment groove 3311 along the height direction of the shearing assembly 4. The U-shaped adjustment groove 3311 is recessed upward from the lower edge of the connecting plate 331 to form a downward-opening groove structure. On the connecting plate 331 around the U-shaped adjustment groove 3311, a first staggered tooth 3312 is arranged in a ring direction. The first staggered tooth 3312 is arranged in a ring around a predetermined center on the connecting plate 331, and the spacing between adjacent teeth is equal, for meshing with the second staggered tooth 3323 on the clamping block 332.

[0089] The clamping block 332 includes a first semi-circular clamping ring 3321 and an integrally formed mounting base 3322. The first semi-circular clamping ring 3321 has an arc-shaped ring structure; the mounting base 3322 extends from the outside of the first semi-circular clamping ring 3321 in a direction away from the shearing component 4, and its end facing away from the first semi-circular clamping ring 3321 is provided with a second staggered tooth 3323. The second staggered tooth 3323 corresponds to the first staggered tooth 3312, and is also arranged in a ring, and is staggered according to the tooth shape.

[0090] The second semicircular clamping ring 333 is disposed on the other side of the first semicircular clamping ring 3321, and the two are connected to each other by a connector, thereby forming a closed clamping ring around the outer periphery of the shear assembly housing 421. The clamping ring consists of the first semicircular clamping ring 3321 and the second semicircular clamping ring 333. The inner diameter of the clamping ring matches the annular mounting groove 4211 opened on the outer side of the shear assembly housing 421. During assembly, it is embedded in the annular mounting groove 4211, so that the shear assembly housing 421 is reliably constrained by the clamping ring in the radial direction.

[0091] The locking screw 334 passes through the inverted U-shaped adjustment groove 3311 and is screwed into the threaded hole in the mounting base 3322 of the clamping block 332. The rod of the locking screw 334 is located in the U-shaped adjustment groove 3311. When the locking screw 334 is in the loose state and the first pendant tooth 3312 and the second pendant tooth 3323 are separated or only slightly in contact, under the combined action of the sliding gap reserved in the length direction of the inverted U-shaped adjustment groove 3311 and the axial gap in the annular mounting groove 4211, the clamping block 332 and its connected clamping ring, together with the shearing assembly housing 421, can move linearly within a range relative to the connecting plate 331 along the length direction of the U-shaped adjustment groove 3311, thereby reserving an adjustable installation position stroke between the shearing assembly housing 421 and the sliding module 31; when the locking screw 334 is tightened, the first pendant tooth 3312 on the connecting plate 331 and the second pendant tooth 3323 on the mounting base 3322 reliably mesh and are pressed together under the action of the axial preload applied by the locking screw 334, so that the axial position of the shearing assembly housing 421 and the segmentation angle around its own axis remain stable in the current state.

[0092] like Figure 4 , Figure 9 and Figure 11 As shown, the shearing assembly 4 includes an electric shearing unit 42 and a guide frame 41 mounted on the upper end of the electric shearing unit 42.

[0093] The electric shearing unit 42 includes a housing 421, a drive unit 422 disposed inside the housing 421, and a cutter 423 disposed at the output end of the drive unit 422. The housing 421 has an approximately columnar structure, and its upper side wall has an annular mounting groove 4211 along the circumference. The groove width is slightly larger than the axial width of the clamping ring, thus leaving a certain axial gap between the groove and the clamping ring. During assembly, the clamping ring formed by the first semicircular clamping ring 3321 and the second semicircular clamping ring 333 is embedded in the annular mounting groove 4211, so that the housing 421 is reliably limited in the radial direction, and the axial position adjustment and angle locking within the range are achieved with the cooperation of the inverted U-shaped adjustment groove 3311 and the locking screw 334. The drive unit 422 is preferably an electric push rod, a linear motor, or a motor assembly with a belt drive mechanism. It is fixedly installed inside the housing 421, with its lower end fixedly connected to the bottom of the housing 421, and its upper output end extending out of the top of the housing 421 and connected to the cutter 423. The cutting tool 423 adopts an electric shearing head structure. The cutting edge of the cutting tool 423 is positioned within the shearing area defined by the guide frame 41, and cooperates with the guide opening of the guide frame 41.

[0094] The guide frame 41 is mounted on the upper end of the housing 421, and includes a mounting member 411 fixedly connected to the housing 421 and a pair of guide plates 412 arranged on both sides of the mounting member 411. The mounting member 411 may be a plate-shaped or frame-shaped component, and is fixedly connected to the upper end face of the housing 421 by screws. The pair of guide plates 412 are respectively fixed to the sides of the mounting member 411 and are arranged parallel to the plane of the baffle 3113 in the sliding module 31.

[0095] Each guide plate 412 is a frame-like perforated plate with a V-shaped top and a V-shaped opening facing the front of the device. Two guide plates 412 are mounted opposite each other on the mounting piece 411 and are arranged parallel to the baffle 3113 in the sliding module 31.

[0096] The inner sides of the two guide plates 412 form a hollow accommodating space. The front of this accommodating space has a guide opening, and the lower part, near the position of the cutter 423, forms a limiting window corresponding to the cutting area of ​​the cutter 423. The cutter 423 is disposed in the accommodating space between the two guide plates 412, and its cutting area is located within the limiting window defined by the lower part of the guide plate 412, so that the cable to be cut can be confined within the cutting area where the cutter is located after entering the guide frame 41 from the guide opening.

[0097] In this embodiment, as Figure 1As shown, the device is also equipped with a monitoring unit 5. The monitoring unit 5 is fixedly installed on the insulating rod assembly 1 above the buffer assembly 3, and is arranged facing the area where the shearing assembly 4 and the buffer assembly 3 are located. It is used to collect image information near the shearing position during the operation and transmit the image signal to the UAV remote control terminal or ground monitoring equipment, so as to facilitate real-time observation of the shearing status and the working environment.

[0098] Working principle: When using the UAV-assisted power distribution network insulation shearing device of the present invention, the insulating rod assembly 1 is first connected to the UAV body through the connector 11, so that the multiple insulating rods 12 can swing slightly relative to the body within a predetermined angle range while maintaining the necessary insulation distance. After the device takes off, the UAV is controlled to align one side of the shearing assembly 4 with the cable to be cut, and the axial position and segment angle of the shearing assembly 4 on the guide rod 2 are pre-adjusted by the locking adjustment unit 33 so that the guide opening of the guide frame 41 faces the cable to be cut.

[0099] As the device approaches the cable, the cable enters the guide openings of the two V-shaped guide plates 412 from the front of the guide frame 41 and is guided to the shearing area where the cutter 423 is located. After confirming the position, the electric shearing unit 42 is activated, and the drive unit 422 drives the cutter 423 to cut the cable. The reaction force generated at the moment of shearing is transmitted to the sliding module 31 through the shearing assembly 4. The sliding module 31 slides away from the cable on the guide rod 2, driving the damping wheel 3142 to compress the first elastic element 3143 and stretch the second elastic element 315, thereby converting the impact load into elastic deformation and friction damping, effectively weakening the instantaneous impact force transmitted to the insulating rod assembly 1 and even the UAV body. The connecting module 13 between the multiple insulating rods 12 allows adjacent rod segments to rotate and slide axially during this process, further playing a role in vibration isolation and buffering.

[0100] As the sliding module 31 moves along the guide rod 2, the guide roller 323 rolls along the U-shaped inner side of the guide slide plate 313. When the sliding module 31 approaches the upper limit of the buffer stroke, the sensor 322 located at the upper end of the guide rod 2 on the limit unit 32 is first triggered by the guide roller 323, and the remote control terminal issues a warning signal; if it continues to move upward and triggers the sensor 322 at the lower end of the guide rod 2, the remote control terminal issues a higher-level alarm, prompting the operator to stop rising or adjust the attitude to prevent the buffer stroke from being completely compressed, which could lead to overload of the drone or damage to the device. The monitoring unit 5 acquires and transmits images of the cutting area throughout the entire operation, allowing the operator to observe the cable insertion and cutting status in real time, thereby achieving safe, stable, and efficient cable cutting operations.

[0101] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A drone-assisted power grid insulation shearing device, characterized in that, include An insulating rod assembly (1) has its top end swinging within a predetermined angle range and connected to the drone body; Guide rod (2), which is rotatably connected to the bottom end of the insulating rod assembly (1); A buffer assembly (3) is sleeved on the guide rod (2) and reciprocates along the axial direction of the guide rod (2); the buffer assembly (3) includes a sliding module (31), which is sleeved on the guide rod (2) and reciprocates between stop blocks (21) provided at both ends of the guide rod (2); the sliding module (31) includes a pulley frame (311) and a damping unit (314); the damping unit (314) is arranged in pairs and includes a damping wheel frame (3141), a damping wheel (3142), a first elastic element (3143) and a second elastic element (315); the damping wheel frame (3141) is fixed at both ends of the top plate (3111) of the pulley frame (311); The damping wheel (3142) is rotatably mounted on the damping wheel frame (3141) via a wheel axle; the first elastic element (3143) is sleeved on the damping shaft (3144) of the damping wheel frame (3141), one end of which is fixedly connected to the top plate (3111) of the pulley frame (311) and the other end is fixedly connected to the damping wheel frame (3141), so that the damping wheel (3142) is biased toward the guide rod (2) and pressed against the outer circumference of the guide rod (2) in the pre-tightened state; the two ends of the second elastic element (315) are fixedly connected to the stop block (21) at the upper end of the guide rod (2) and the upper part of the baffle (3113) of the pulley frame (311), respectively; and The shearing assembly (4) is connected to the outside of the buffer assembly (3). The shearing assembly (4) includes a guide frame (41) with a guide opening and an electric shearing unit (42). The guide frame (41) is located at the top of the electric shearing unit (42), and the cutter (423) of the electric shearing unit (42) is located inside the guide frame (41). The cutting plane of the cutter (423) is coplanar or parallel to the guide opening's inlet direction.

2. The UAV-assisted power grid insulation shearing device according to claim 1, characterized in that, The insulating rod assembly (1) includes: Connector (11), which is rotatably connected to the UAV body; and Several insulating rods (12) are connected to each other by a connecting module (13).

3. The UAV-assisted power grid insulation shearing device according to claim 2, characterized in that, Each of the connection modules (13) includes: A sliding cap (131), which has a cylindrical structure, is fitted onto the end of the insulating rod (12), and the outer end face of the sliding cap (131) is provided with an ear plate (1311); and A pair of parallel connecting pieces (132) are arranged one above the other on the outside of the ear plate (1311) and connected to the ear plate (1311) on the outer end face of the two adjacent sliding caps (131) via a pivot (134); A damping pad (133) is provided between the ear plate (1311) and the connecting piece (132); the rotating shaft (134) passes through the waist-shaped holes opened at both ends of the connecting piece (132).

4. The UAV-assisted power grid insulation shearing device according to claim 1, characterized in that, The buffer component (3) further includes: A limiting unit (32) is parallel to the axial direction of the guide rod (2); and A locking adjustment unit (33) is fixedly connected to the sliding module (31) on the side near the shearing assembly (4); The limiting unit (32) includes a connecting rod (321) and a pair of sensors (322). The two ends of the connecting rod (321) are respectively connected to the two stop blocks (21). The two sensors (322) are installed at a distance along the length of the connecting rod (321), and each sensor (322) is provided with a guide roller (323) at its bottom end.

5. The UAV-assisted power grid insulation shearing device according to claim 4, characterized in that, The sliding module (31) further includes: At least two pulleys (312) have arc-shaped grooves on their outer circumferences that are adapted to the outer diameter of the guide rod (2). The pulleys (312) are connected to the two baffles (3113) via pulley shafts. The guide slide (313) is a U-shaped frame structure fixedly installed on a baffle (3113); The guide roller (323) is in contact with the U-shaped inner side of the guide slide plate (313) and rolls along the U-shaped inner side under the drive of the sliding module (31); the pulley frame (311) includes a top plate (3111), a bottom plate (3112) and a baffle (3113) connecting the top plate (3111) and the bottom plate (3112).

6. The UAV-assisted power grid insulation shearing device according to claim 1, characterized in that, The damping wheel (3142) has a dumbbell-shaped structure.

7. The UAV-assisted power grid insulation shearing device according to claim 1, characterized in that, The electric shearing unit (42) includes a housing (421), a drive unit (422) disposed in the housing (421), and a cutter (423) disposed at the top of the drive unit (422); wherein, an annular mounting groove (4211) is provided on the housing (421).

8. The UAV-assisted power grid insulation shearing device according to claim 4, characterized in that, The locking adjustment unit (33) includes: A connecting plate (331) is fixedly installed on a base plate (3112). The bottom of the connecting plate (331) is provided with an inverted U-shaped adjustment groove (3311), and the connecting plate (331) on the outer periphery of the U-shaped adjustment groove (3311) is provided with a first plum blossom tooth (3312). The clamping block (332) includes a first semi-circular clamping ring (3321) and a mounting base (3322) with a second perforated tooth (3323). The second semicircular clamping ring (333) is connected to the first semicircular clamping ring (3321) via a connector to form a clamping ring embedded in the annular mounting groove (4211); and A locking screw (334) passes through the U-shaped adjustment groove (3311) and is fixedly connected to the clamp (332); The first plum blossom tooth (3312) and the second plum blossom tooth (3323) are arranged in a ring and interlocked.

9. The UAV-assisted power grid insulation shearing device according to claim 1, characterized in that, The guide frame (41) is installed on the upper end of the housing (421). The guide frame (41) includes a mounting member (411) fixedly connected to the housing (421) and guide plates (412) installed on both sides of the mounting member (411) and parallel to the baffle (3113). The guide plate (412) is a hollow plate with a V-shaped top, and a space for accommodating the cutting tool (423) is formed between the two guide plates (412).

10. The UAV-assisted power grid insulation shearing device according to any one of claims 1-9, characterized in that, It also includes a monitoring unit (5) installed above the buffer assembly (3).

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