Self-locking spacer ring dismounting and locking mechanism

Abstract

The invention discloses a self-locking spacer ring dismounting and locking mechanism which comprises a spacer ring and a spacer ring operation robot capable of moving along a high-voltage cable, the spacer ring comprises a shell and a locking device, the shell is composed of a movable half shell and a fixed half shell, and the movable half shell and the fixed half shell are fixed through an upper bolt and a lower bolt. After the movable half shell and the fixed half shell are combined, a closed notch through which a high-voltage cable can pass is formed in the center; the locking device comprises a mounting shell arranged on the fixed half shell, a telescopic filler block is arranged on the mounting shell, the filler block is arranged on one side of the closed notch, the filler block is connected with the rotating handle through a telescopic driving mechanism, and the high-voltage cable can be extruded and fixed in the closed notch after the filler block extends out. According to the invention, the adopted spacing ring is a shell with a left half and a right half, and after the shell is closed, even if the locking device is loosened, the spacing ring can be reserved on the cable, so that the safety is improved. And an anti-loosening device is arranged, the input rotating handle is clamped after installation, and loosening is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cable working robots, and in particular to a self-locking spacer ring disassembly and locking mechanism. Background Art

[0002] High-voltage transmission lines are an important part of ensuring the supply of urban electric energy. The environment in which transmission lines are erected is relatively complex, such as near mountains, sand dunes, and traffic arteries. Once strong winds occur, these transmission lines will directly experience low-frequency, large-scale swings under the action of wind loads, which is called "dancing". Since most of the existing outdoor transmission lines do not have an insulation layer, dancing can shorten the distance between the phases of the conductors or cause collisions, resulting in flashovers that burn the conductors and cause tripping. Once a transmission line failure occurs due to a wind disaster, it is difficult to resolve it in a short period of time, which will lead to the continuous expansion of losses caused by the failure.

[0003] The current insulation method to solve the problem of cable galloping and collision is to coat the outside of the cable with insulating material, but there are two obvious problems with the insulation material coating scheme: First, the insulation layer is prone to unevenness or damage during coating, and it is prone to aging and cracking after a long time, and it is not easy to repair, thus affecting the insulation performance. Second, in order to ensure insulation, the insulating material usually has a certain thickness, which inevitably brings a considerable total weight. Usually, the load-bearing capacity of the high-voltage cable support tower that has been erected is limited. Increasing the total weight of the cable will have great safety hazards and may even cause accidents such as collapse and breakage. In contrast, installing lightweight and high-strength insulating spacer rings at certain intervals on high-voltage transmission lines that are prone to galloping, thereby ensuring a safe distance between the wires and avoiding collisions, is an effective solution to the above problems.

[0004] At present, the convenient and firm installation and long-term stability of the spacer ring have not been completely solved. There are still many problems in using mobile robots to install and recover the spacer rings on overhead lines, such as the difficulty in ensuring safe transportation during installation and the risk of loosening and falling after installation. Therefore, it is urgent to design the locking and autonomous disassembly mechanism of the spacer ring. Summary of the invention

[0005] 1. Technical problems to be solved: Existing spacer rings have hidden dangers such as difficulty in ensuring safe transportation during installation and easy loosening and falling after installation.

[0006] In view of the above technical problems, the present invention provides a self-locking spacer ring disassembly and locking mechanism.

[0007] 2. Technical solution: A self-locking spacer ring disassembly and locking mechanism comprises a spacer ring and a spacer ring operating robot capable of moving along a high-voltage cable, wherein the spacer ring comprises a shell and a locking device, wherein the shell consists of a movable half shell and a fixed half shell, the movable half shell and the fixed half shell are fixed by two upper and lower bolts, and a closed slot for the high-voltage cable to pass through is formed at the center of the movable half shell and the fixed half shell after being combined; the locking device comprises a mounting shell arranged on the fixed half shell, the mounting shell is provided with a retractable pad, the pad is arranged on one side of the closed slot, the pad is connected to a rotating handle through a retractable driving mechanism, and the high-voltage cable can be squeezed and fixed in the closed slot after the pad is extended; the rotating handle is cooperatively connected to an output sleeve of the spacer ring operating robot, the output sleeve is connected to a movable end of a motor, the motor is fixed on a base, the base is slidably connected to a body of the spacer ring operating robot, the base is connected to a horizontal driving mechanism, a fork claw is also provided on the body, the fork claw is connected to a lifting and lowering adjustment mechanism, and a limiting slot corresponding to the fork claw is provided on the shell of the spacer ring.

[0008] Preferably, a trapezoidal guide opening is provided at the bottom of the limiting slot.

[0009] Furthermore, the self-locking spacer ring disassembly and locking device also includes an anti-loosening device, which includes two anti-loosening cover plates symmetrically arranged on both sides of the rotating handle, and the two anti-loosening cover plates are respectively arranged on the fixed half shell and the movable half shell. A guide column is provided at the bottom of the anti-loosening cover plate, and the guide column is slidably connected to the guide hole on the fixed half shell or the movable half shell, and a reset spring is sleeved on the guide column; at least one anti-loosening groove is provided between the two anti-loosening cover plates, and after the high-voltage cable is squeezed and fixed, the rotating handle is stuck in the anti-loosening groove, and when the output clamping sleeve is horizontally close to the anti-loosening cover plate, the anti-loosening cover plate can be pushed open and cooperated to connect the rotating handle.

[0010] Preferably, the anti-loosening cover plate is U-shaped and the open sides are opposite to each other, a gap is provided between the two anti-loosening cover plates, the internal gaps of the two U-shaped anti-loosening cover plates are combined into a first anti-loosening groove, the gap between the two anti-loosening cover plates is a second anti-loosening groove, and the two anti-loosening grooves are perpendicular to each other.

[0011] Preferably, an embedding groove corresponding to the rotating handle is provided inside the output sleeve, and the rotating handle is movably engaged in the embedding groove.

[0012] Furthermore, the telescopic driving mechanism includes an input screw fixedly connected to a rotating handle, the input screw is rotatably connected to a mounting shell, the input screw is threadedly connected to an active wedge block, the active wedge block is horizontally slidably connected in the mounting shell, a passive wedge block is provided on the top of the active wedge block, the passive wedge block is slidably connected in the mounting shell up and down, a compression spring is provided between the passive wedge block and the top wall of the mounting shell, the inclined surfaces of the active wedge block and the passive wedge block are fitted together, and a liner is fixed on the top of the passive wedge block.

[0013] Furthermore, two rotatably connected driving wheels are provided on the top of the body of the spacer ring operating robot, and the driving wheels are connected to the driving module.

[0014] 3. Beneficial effects: (1) The existing high-voltage overhead line spacer ring locking device includes a relatively complex gear transmission device, while the present invention does not include any gear device, has a simple and reliable structure, higher transmission accuracy and efficiency, and less noise and vibration.

[0015] (2) The existing high-voltage overhead line spacer ring housing is an independent housing with an opening on the top, and the locking device is pressed from both sides. When the locking device is accidentally loosened, the spacer ring is easy to fall off. The spacer ring used in the present invention is a housing with a left and right half design. When the housing is closed, even if the locking device is loose, the spacer ring can be retained on the cable, which improves the safety during installation and transportation and the safety in the event of accidental loosening.

[0016] (3) The spacer ring locking device described in the present invention is self-locking after installation. A clamping structure that uses thread tightening as input is prone to loosening due to loosening of the thread on the input side. For example, the thread rotates unexpectedly under the action of external force or external environmental interference (such as wind, cable vibration, etc.), thereby causing the clamping mechanism to loosen. The anti-loosening device described in the present invention can well clamp the input rotating handle after installation to completely prevent it from loosening.

[0017] (4) The spacer ring described in the present invention is transported by a fork claw, which supports the spacer ring well during transportation without the risk of falling. In addition, as the fork claw rises and falls, the spacer ring can be prevented from rubbing against the cable during transportation, thereby causing additional resistance or wearing the spacer ring. After the installation is completed, the robot can also easily return to its original position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the self-locking spacer ring disassembly and locking mechanism of the present invention; Figure 2 It is a schematic diagram of the structure of the spacer ring of the present invention; Figure 3 It is a structural schematic diagram of the locking device of the present invention; Figure 4 It is a structural schematic diagram of the anti-loosening device of the present invention; Figure 5 It is a schematic diagram of the state of the anti-loosening device of the present invention when it is popped up; Figure 6 It is a schematic diagram of the state when the anti-loosening device of the present invention is pressed down. DETAILED DESCRIPTION

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

[0020] As attached Figure 1 To Attachment Figure 6 As shown, Specific embodiment: A self-locking spacer ring disassembly and locking mechanism, including a spacer ring 1 and a spacer ring operating robot 2 that can move along a high-voltage cable 3, the spacer ring 1 includes a shell and a locking device 13, the shell is composed of a movable half shell 11 and a fixed half shell 12, the movable half shell 11 and the fixed half shell 12 are fixed by upper bolts 17 and lower bolts 18, the movable half shell 11 and the fixed half shell 12 are combined to form a closed slot 15 in the center for the high-voltage cable 3 to pass through; the locking device 13 includes a mounting shell 131 arranged on the fixed half shell 12, the mounting shell 131 is provided with a retractable lining block 136, the lining block 136 is arranged at the closed slot 15 On one side, the pad 136 is connected to the rotating handle 135 through a telescopic driving mechanism. After the pad 136 is extended, the high-voltage cable 3 can be squeezed and fixed in the closed slot 15; the rotating handle 135 cooperates with the output sleeve 21 connected to the spacer ring operating robot 2, the output sleeve 21 is connected to the movable end of the motor 24, the motor 24 is fixed on the base, the base is slidably connected to the body 26 of the spacer ring operating robot 2, the base is connected to the horizontal driving mechanism 27, and the body 26 is also provided with a fork claw 22, the fork claw 22 is connected to the lifting adjustment mechanism 25, and the shell of the spacer ring 1 is provided with a limit slot 16 corresponding to the fork claw 22, and the bottom of the limit slot 16 is provided with a trapezoidal guide opening.

[0021] When the spacer ring operation robot 2 is installing the spacer ring, it first opens the lower bolt 18, loosens the upper bolt 17, passes the high-voltage cable 3 through the closed slot 15, and re-tightens the upper bolt 17 and the lower bolt 18. Since the high-voltage cable is located in the closed slot 15, it can avoid accidental falling off during the installation process. The spacer ring operation robot 2 moves to a suitable position, controls the fork claw 22 to be clamped into the limit card slot 16, and lifts the spacer ring 1 upward to prevent the spacer ring 1 from contacting the high-voltage cable 3 to generate friction resistance or wear the spacer ring material. The horizontal drive mechanism 27 controls the output card sleeve 21 to move forward and clamp the rotating handle 135 to complete the initial preparation. When the spacer ring operation robot 2 carries the spacer ring 1 to move to the target operation position, the fork claw 22 descends a distance to control the spacer ring 1 to hang on the high-voltage cable 3, and the upper end surface of the closed slot 15 contacts the high-voltage cable 3. The fork claw 22 is still located in the limit card slot 16 on the spacer ring 1, limiting the axial movement of the spacer ring 1 along the high-voltage cable 3 and the rotation around the cable 3. At this time, the motor 24 drives the output ferrule 21 to rotate and then drives the rotating handle 141 to rotate, and the lining block 136 moves upward until it presses against the high-voltage cable 3 to complete the locking. At this time, the control fork claw 22 is lowered to disengage from the limit slot 16, and the output ferrule 21 is disengaged from the rotating handle 141. The spacer ring operation robot 2 moves backward to leave the spacer ring 1 in the set position to complete the operation. The disassembly process is carried out in the opposite steps of the above. The outer surface of the spacer ring 1 is an insulating material. Installing it on the high-voltage cable 3 can prevent flashovers between adjacent high-voltage cables due to cable dancing and collision, which may burn the wires and cause tripping.

[0022] In order to prevent the spacer ring 1 from loosening due to external disturbance or other interference factors after installation, the self-locking spacer ring disassembly and locking device 13 is also provided with an anti-loosening device 14, which includes two anti-loosening cover plates 141 symmetrically arranged on both sides of the rotating handle 135, and the two anti-loosening cover plates 141 are respectively arranged on the fixed half shell 12 and the movable half shell 11. A guide column 142 is provided at the bottom of the anti-loosening cover plate 141, and the guide column 142 is slidably connected to the guide hole 143 on the fixed half shell 12 or the movable half shell 11, and a reset spring 145 is sleeved on the guide column 142; at least one anti-loosening groove 144 is provided between the two anti-loosening cover plates 141, and after the high-voltage cable 3 is squeezed and fixed, the rotating handle 135 is stuck in the anti-loosening groove 144, and when the output clamping sleeve 21 is horizontally close to the anti-loosening cover plate 141, the anti-loosening cover plate 141 can be pushed open and cooperated to connect the rotating handle 135. Initially, under the action of the reset spring 145, the two anti-loosening cover plates 141 are in a pop-up state, the anti-loosening cover plates 141 and the rotating handle 135 are at the same height, and the rotating handle 135 is located in the anti-loosening groove 144, which limits the rotation of the rotating handle 135 and prevents loosening caused by external interference. When installation or disassembly is required, the output ferrule 21 is pushed close to the rotating handle 135, and the anti-loosening cover plate 141 is automatically pushed away during the engagement of the output ferrule 21 and the rotating handle 135 to prevent it from interfering with the rotation of the rotating handle 135 by the output ferrule 21.

[0023] Preferably, the anti-loosening cover plate 141 is U-shaped and the opening sides are opposite to each other, a gap is provided between the two anti-loosening cover plates 141, the internal gaps of the two U-shaped anti-loosening cover plates 141 are combined into a first anti-loosening groove 144, the gap between the two anti-loosening cover plates 141 is a second anti-loosening groove 144, and the two anti-loosening grooves 144 are perpendicular to each other. Multiple anti-loosening grooves 144 are provided to facilitate finding a suitable pressing force while also allowing the rotating handle 135 to rotate to a position that can align with the anti-loosening groove 144.

[0024] Preferably, an embedding groove corresponding to the rotating handle 135 is provided inside the output sleeve 21, and the rotating handle 135 is movably engaged in the embedding groove.

[0025] Furthermore, the telescopic driving mechanism includes an input screw 133 fixedly connected to a rotating handle 135, the input screw 133 is rotatably connected to a mounting shell 131, the input screw 133 is threadedly connected to an active wedge block 134, the active wedge block 134 is horizontally slidably connected in the mounting shell 131, a passive wedge block 132 is provided on the top of the active wedge block 134, the passive wedge block 132 is slidably connected in the mounting shell 131 up and down, a compression spring 137 is provided between the passive wedge block 132 and the top wall of the mounting shell 131, the inclined surfaces of the active wedge block 134 and the passive wedge block 132 are fitted together, and a liner 136 is fixed on the top of the passive wedge block 132. When the rotating handle 135 is rotated, the input screw 133 rotates therewith, and the rotation of the input screw 133 drives the threaded active wedge block 134 to move horizontally. When the active wedge block 134 moves horizontally, it pushes the passive wedge block 132 to move up and down, thereby driving the lining block 136 to move up and down to squeeze and fix the high-voltage cable 3. Due to the use of threaded advancement, it has a self-locking function, strong resistance to external interference, and is not easy to loosen.

[0026] Two rotatably connected driving wheels 23 are provided on the top of the body 26 of the spacer ring operation robot 2, and the driving wheels 23 are connected to the driving module. The driving structure can also be replaced by other structures.

[0027] Although the present invention has been disclosed as above in terms of preferred embodiments, they are not intended to limit the present invention. Anyone skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined by the claims of this application.

Claims

1. A self-locking spacer ring disassembly and locking mechanism, characterized in that: It includes a spacer ring and a spacer ring operating robot that can move along a high-voltage cable, the spacer ring includes a shell and a locking device, the shell is composed of a movable half shell and a fixed half shell, the movable half shell and the fixed half shell are fixed by two upper and lower bolts, and the movable half shell and the fixed half shell are combined to form a closed slot at the center thereof for the high-voltage cable to pass through; the locking device includes a mounting shell arranged on the fixed half shell, the mounting shell is provided with a retractable pad, the pad is arranged on one side of the closed slot, the pad is connected to a rotating handle through a telescopic driving mechanism, and the high-voltage cable can be squeezed and fixed in the closed slot after the pad is extended; the rotating handle is cooperated to connect the output sleeve of the spacer ring operating robot, the output sleeve is connected to the movable end of the motor, the motor is fixed on the base, the base is slidably connected to the body of the spacer ring operating robot, the base is connected to the horizontal driving mechanism, the body is also provided with a fork claw, the fork claw is connected to the lifting and lowering adjustment mechanism, and the shell of the spacer ring is provided with a limit slot corresponding to the fork claw.

2. A self-locking spacer ring disassembly and locking mechanism according to claim 1, characterized in that: A trapezoidal guide opening is provided at the bottom of the limit slot.

3. A self-locking spacer ring disassembly and locking mechanism according to claim 1 or 2, characterized in that: The self-locking spacer ring disassembly and locking device also includes an anti-loosening device, which includes two anti-loosening cover plates symmetrically arranged on both sides of the rotating handle, and the two anti-loosening cover plates are respectively arranged on the fixed half shell and the movable half shell. A guide column is provided at the bottom of the anti-loosening cover plate, and the guide column is slidably connected to the guide hole on the fixed half shell or the movable half shell, and a reset spring is sleeved on the guide column; at least one anti-loosening groove is provided between the two anti-loosening cover plates, and after the high-voltage cable is squeezed and fixed, the rotating handle is stuck in the anti-loosening groove, and when the output clamping sleeve is horizontally close to the anti-loosening cover plate, the anti-loosening cover plate can be pushed open and cooperated to connect the rotating handle.

4. A self-locking spacer ring disassembly and locking mechanism according to claim 3, characterized in that: The anti-loosening cover plate is U-shaped and has opening sides facing each other. A gap is provided between the two anti-loosening cover plates. The internal gaps of the two U-shaped anti-loosening cover plates are combined into a first anti-loosening groove. The gap between the two anti-loosening cover plates is a second anti-loosening groove. The two anti-loosening grooves are perpendicular to each other.

5. A self-locking spacer ring disassembly and locking mechanism according to claim 4, characterized in that: An embedding groove corresponding to the rotating handle is arranged inside the output clamping sleeve, and the rotating handle is movably clamped in the embedding groove.

6. A self-locking spacer ring disassembly and locking mechanism according to claim 1, characterized in that: The telescopic driving mechanism includes an input screw fixedly connected to a rotating handle, the input screw is rotatably connected to a mounting shell, the input screw is threadedly connected to an active wedge block, the active wedge block is horizontally slidably connected in the mounting shell, a passive wedge block is provided on the top of the active wedge block, the passive wedge block is slidably connected in the mounting shell up and down, a compression spring is provided between the passive wedge block and the top wall of the mounting shell, the inclined surfaces of the active wedge block and the passive wedge block are fitted together, and a liner is fixed on the top of the passive wedge block.

7. A self-locking spacer ring disassembly and locking mechanism according to claim 6, characterized in that: The top of the body of the spacer ring operation robot is provided with two rotatably connected driving wheels, and the driving wheels are connected to the driving module.

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