Handheld overhead line maintenance device with hooking and anti-falling function

Abstract

The present application relates to an overhead line maintenance device, and discloses a handheld overhead line maintenance device capable of preventing falling, which comprises a main body, a clamping jaw, an operating rod, a clamping mechanism and an unlocking mechanism. The clamping mechanism comprises a ratchet wheel and a pawl assembly rotatably arranged on the main body. A first elastic member is arranged between the ratchet wheel and the main body. The pawl assembly comprises a pawl, a driving block, a second elastic member, a second limiting member and a third limiting member. The end of the driving block close to the clamping jaw extends into a clamping position. The second elastic member is connected between the pawl and the driving block to provide a driving force for the pawl to engage with the ratchet wheel. The second limiting member is fixedly arranged on the main body to limit the rotation angle of the driving block under the action of the second elastic member. The third limiting member is fixedly arranged on the driving block to limit the rotation angle of the pawl under the action of the second elastic member. The unlocking mechanism is used to release the engagement between the pawl and the ratchet wheel to achieve unlocking. The present application has high safety and reliability, and is convenient and efficient to operate. The present application is suitable for the overhead line maintenance industry.

Description

Technical Field

[0001] This invention relates to an overhead line maintenance device, specifically a handheld, anti-detachment overhead line maintenance device. Background Technology

[0002] In power systems, when performing power outage maintenance on electrical equipment such as substations and overhead lines, a grounding wire must be reliably connected to the overhead line to be maintained, short-circuiting it to the ground. This effectively prevents safety threats to operators from accidental energization, induced voltage, or unintended energization of equipment. As a key connecting device in the grounding wire circuit, the reliability of the grounding clamp and the ease of operation directly affect the safety and efficiency of the entire maintenance operation.

[0003] Patent CN120497715B discloses a self-locking device for grounding wires used in power maintenance. This device achieves one-way locking through a ratchet and pawl mechanism, and couples the linear motion of the operating lever with the rotation of the pawl using a linkage unlocking component. Specifically, in its free state, the rotating part of the device is closed under the action of a spring, and the pawl is engaged and locked with the ratchet. In use, the operator must first pull down the operating lever to drive the pawl to disengage from the ratchet, unlocking the rotating part, and then rely on the spring force to close the rotating part and clamp the cable. Then, the operating lever is released, and under the action of a second spring, the pawl and ratchet re-engage and lock, the rotating part cannot rotate, and the cable remains clamped. For disassembly, the operating lever is lifted to unlock, allowing the cable to detach.

[0004] However, in use, the aforementioned patent requires the operating lever to be moved so that the connecting shaft is positioned at the corresponding locking point, first unlocking point, or second unlocking point within the triangular through-hole to achieve locking or unlocking. If the operator negligently fails to fully pull down the operating lever or releases it prematurely, causing the connecting shaft to fail to reach a certain position, the ratchet and pawl mechanism will not effectively engage, leaving the device in a false lock or unlocked state. In this situation, if the rotating part accidentally loosens due to vibration or other external forces during maintenance, it will lead to a serious safety accident. Summary of the Invention

[0005] The present invention aims to provide a handheld, anti-detachment overhead line maintenance device to solve the problem that existing grounding wire self-locking devices are prone to locking failure due to improper operation, which can lead to serious safety accidents.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A handheld, anti-detachment overhead line maintenance device includes a main body, a gripper rotatably mounted on the main body, and an operating rod movably connected to the main body, with the main body and the gripper forming a clamping position; it also includes a clamping mechanism and an unlocking mechanism.

[0008] The clamping mechanism includes a ratchet and pawl assembly rotatably mounted on the main body;

[0009] The ratchet is fixedly connected to the gripper, and a first elastic element is provided between the ratchet and the main body. The first elastic element provides a driving force for the gripper to close toward the main body. A first limiting element is fixed on the main body to prevent the ratchet from rotating under the action of the first elastic element, so that the first elastic element remains in an energy storage state.

[0010] The pawl assembly includes a pawl, a drive block, a second elastic element, a second limiting element, and a third limiting element. The pawl and the drive block are each rotatably mounted on the main body, with one end of the drive block near the gripper extending into the clamping position. The second elastic element connects the pawl and the drive block and provides a driving force for the pawl to engage with the ratchet. The second limiting element is fixed to the main body and limits the rotation angle of the drive block under the action of the second elastic element. The third limiting element is fixed to the drive block and limits the rotation angle of the pawl under the action of the second elastic element.

[0011] The unlocking mechanism is used to disengage the pawl from the ratchet to unlock the device.

[0012] As a limitation of the present invention: the unlocking mechanism includes a pusher fixed to the top of the operating lever and a reset assembly;

[0013] The pushing component acts on the pawl, causing the pawl to overcome the driving force of the second elastic component and disengage from the ratchet.

[0014] The reset assembly includes a spring, a guide fixed to the top of the pusher, and a slotted hole on the main body; the guide passes through the slotted hole and is restricted to vertical movement within the stroke defined by the slotted hole; the spring is connected between the pusher and the main body to provide a reset driving force for the pusher; in the free state, the guide is located at the lower end of the slotted hole and the top of the pusher is separated from the pawl.

[0015] As a further limitation of the present invention: the initial state is when the pawl is separated from the ratchet and the guide is located at the lower end of the slot;

[0016] When the pawl engages with the ratchet and the guide is located at the lower end of the slot, it is in the clamping state;

[0017] When the pawl is separated from the ratchet and the guide is located at the upper end of the slot, it is in the unlocked state.

[0018] As a further definition of the present invention: the first elastic element is a first torsion spring, and the second elastic element is a second torsion spring.

[0019] As a further limitation of the present invention: a third torsion spring is provided between the drive block and the main body to provide a driving force for the drive block to rotate toward the clamping position; the second limiting member limits the rotation angle of the drive block under the action of the second and third torsion springs.

[0020] As a further limitation of the present invention: a roller is rotatably provided on the top of the pusher, and the surface of the roller acts on the pawl; the side of the pawl that contacts the surface of the roller is an inclined surface, and the height of the inclined surface gradually decreases from the direction away from the clamping position to the direction closer to the clamping position.

[0021] As a further limitation of the present invention: the main body includes a first conductive shell and a conductive current-draining assembly, and the conductive current-draining assembly is provided with a grounding wire connection port; the clamping mechanism and the unlocking mechanism are located inside the first conductive shell.

[0022] As a further limitation of the present invention: the grippers, the first conductive housing, and the conductive drainage assembly are all made of conductive metal material.

[0023] By adopting the above technical solution, the beneficial effects achieved by the present invention compared with the prior art are as follows:

[0024] This invention includes a main body, grippers, an operating lever, a clamping mechanism, and an unlocking mechanism. The drive block extends into the clamping position. When the cable enters the clamping position, squeezing the drive block automatically triggers the gripper to rotate towards and engage with the ratchet. At this point, the ratchet can no longer rotate, and under the action of the first elastic element, the gripper clamps the cable. This solves the problem of locking failure due to improper operation in the prior art, achieving inherent safety through immediate locking upon connection and eliminating the risk of human error.

[0025] During unlocking, the operating lever is raised, and the top of the push rod acts on the ratchet, causing the ratchet to overcome the driving force of the second elastic element and disengage from the ratchet. At this time, the one-way lock formed by the ratchet and pawl is released. Under the reaction force generated by the cable on the pawl, the pawl rotates away from the main body, and the cable can then be released from the clamping position. During the lifting process, the spring in the reset assembly is compressed. When the operating lever is released, the restoring force of the spring will drive the operating lever and the push member to automatically reset downwards, preparing for the next operation. This invention, through a simple lifting action, directly converts the pawl's unlocking displacement through the push member, eliminating the risk of unlocking failure due to the connecting shaft not moving to a specific position.

[0026] In summary, this invention is highly safe and reliable, and easy and efficient to operate. This invention is applicable to the overhead line maintenance industry and is used for the reliable connection of grounding wires during power outage maintenance of power equipment such as substations and overhead lines. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention from a first perspective;

[0029] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention from a second perspective;

[0030] Figure 3 This is a front view schematic diagram of the gripper, main body, and clamping mechanism in an embodiment of the present invention;

[0031] Figure 4 This is a partial structural diagram of an embodiment of the present invention from a third-person perspective;

[0032] Figure 5 This is a three-dimensional structural diagram of an embodiment of the present invention from a fourth perspective;

[0033] Figure 6 This is a schematic diagram of the front view of the structure before clamping the cable according to an embodiment of the present invention;

[0034] Figure 7 This is a front view schematic diagram of the cable clamping structure according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the main structure when unlocking the cable according to an embodiment of the present invention.

[0036] In the diagram: 1 - gripper;

[0037] 2-Main body, 21-Modible hole;

[0038] 3-Operating lever;

[0039] 4-Clamping mechanism, 41-Ratchet, 42-First elastic element, 43-First limiting element, 44-Pawl, 45-Drive block, 451-Trigger end, 46-Third torsion spring, 47-Second elastic element, 48-Second limiting element, 49-Third limiting element;

[0040] 5-Unlocking mechanism, 51-Pushing component, 52-Roller, 53-Spring, 54-Guide component, 55-Strip hole;

[0041] 6-Clamping position, 7-Cable. Detailed Implementation

[0042] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and do not constitute a limitation thereof.

[0043] The use of terms such as "up" and "down" or positional relationships in the embodiments is based on the human body's position when using this embodiment. It is only for the purpose of describing the present invention and simplifying the description, and does not indicate or imply that the device or component must have a specific position, or that it is constructed and operated in a specific position. Therefore, it should not be construed as a limitation on the content protected by the present invention.

[0044] The clockwise and counterclockwise directions mentioned in this embodiment are based on... Figure 3 It is defined by its orientation.

[0045] like Figures 1 to 8 As shown, this embodiment includes a gripper 1, a main body 2, an operating lever 3, a clamping mechanism 4, and an unlocking mechanism 5. This embodiment can realize the function of automatic locking triggered by the cable 7 itself, effectively solving the locking failure problem caused by improper manual operation in the prior art, and has the advantages of preventing misoperation, high safety and reliability, and convenient operation.

[0046] The clamping mechanism 4 is used to reliably clamp the cable 7 and achieve automatic locking. For example... Figure 3 As shown, the clamping mechanism 4 includes a ratchet 41 and a pawl assembly rotatably mounted on the main body 2.

[0047] First, the gripper 1 is hinged and rotatably mounted on the main body 2, allowing it to rotate towards or away from the main body 2. This connection method is described in patent publication number CN120497715B. The gripper 1 and the main body 2 form a clamping position 6 for accommodating the cable 7. In the initial state, the opening size of the clamping position 6 in the horizontal direction is smaller than the diameter of the cable 7 to ensure sufficient clamping force is generated after the cable 7 enters. The gripper 1 is made of a conductive metal material to provide sufficient mechanical strength and conductivity; this material selection is also existing technology.

[0048] like Figure 3 , 5 As shown, the ratchet 41 and the gripper 1 share the same hinge axis, and the ratchet 41 is fixedly connected to the gripper 1. The ratchet 41 is fixed to the end of the gripper 1 near the hinge axis and rotates synchronously with the gripper 1. The structure of the ratchet 41 itself is prior art. A first elastic element 42, which is a first torsion spring, is provided between the ratchet 41 and the main body 2 to provide a driving force for the gripper 1 to close towards the main body 2. The first elastic element 42 is sleeved on the hinge axis of the ratchet 41. Figure 3 As shown, the first elastic element 42 is in a deformed state and has a certain torque, causing the ratchet 41 and gripper 1 to tend to rotate counterclockwise. The first limiting element 43 is used to prevent the ratchet 41 from rotating under the action of the first elastic element 42, keeping the first elastic element 42 in an energy-storing state. Specifically, the first limiting element 43 is a rod-shaped structure, fixedly mounted on the main body 2. A slot is provided at the top of the ratchet 41, and the first limiting element 43 is located within the slot. The first limiting element 43, in conjunction with the first elastic element 42, ensures that in the initial state, the ratchet 41 and gripper 1 can only rotate clockwise, not counterclockwise. The initial state refers to the state when the cable 7 is not clamped.

[0049] like Figure 3-6As shown, the pawl assembly includes a pawl 44, a drive block 45, a second elastic element 47, a third torsion spring 46, a second limiting element 48, and a third limiting element 49.

[0050] Pawl 44 and drive block 45 are hinged and rotatably mounted on the main body 2, sharing the same hinge axis. The end of drive block 45 closest to pawl 1 (i.e., trigger end 451) extends into clamping position 6, with the lower end of drive block 45 not exceeding point A on the main body 2 to ensure cable 7 can smoothly enter clamping position 6. The trigger end 451 is beveled to effectively compress cable 7 after it enters clamping position 6. A third torsion spring 46 connects drive block 45 to the main body 2 and is sleeved on the hinge axis shared by drive block 45 and pawl 44, providing drive block 45 with a tendency to rotate towards clamping position 6. Alternatively, the third torsion spring 46 is in a deformed state, possessing a certain torque, causing drive block 45 to rotate clockwise. The second limiting member 48 limits the angle of clockwise rotation of drive block 45 under the action of the third torsion spring 46, keeping the third torsion spring 46 in an energy-storing state. Specifically, the second limiting member 48 is a rod-shaped structure, fixedly mounted on the main body 2, and abuts against the top of the driving block 45.

[0051] like Figure 4 As shown, the second elastic element 47 is a second torsion spring, connected between the pawl 44 and the drive block 45, and sleeved on the hinge shaft shared by the drive block 45 and the pawl 44. It provides a driving force for the pawl 44 to engage with the ratchet 41. Alternatively, the second elastic element 47 can be understood as being in a deformed state, possessing a certain torque, causing the pawl 44 to tend to rotate counterclockwise. The third limiting element 49 limits the angle of counterclockwise rotation of the pawl 44 under the action of the second elastic element 47, keeping the second elastic element 47 in an energy-storing state. Specifically, the third limiting element 49 is a rod-shaped structure, fixedly mounted on the drive block 45. The third limiting element 49 abuts against one side wall of the pawl 44 away from the clamping position 6. (See [reference]). Figure 5 It should be noted that the torque of the second elastic element 47 is less than the torque of the third torsion spring 46, ensuring that the third limiting element 49 can resist the pawl 44 and prevent it from rotating counterclockwise.

[0052] In this embodiment, the first elastic element 42 and the second elastic element 47 can be torsion springs, torsion bar springs, or other elastic elements capable of torsional deformation.

[0053] It should be noted that the rotation of the drive block 45 and the pawl 44 can also be achieved by the second elastic element 47. The third torsion spring 46 is provided in this embodiment as a further optimization to ensure that the drive block 45 has sufficient force to reset to the initial state.

[0054] The working process of clamping mechanism 4 is as follows: Figure 3 ,4 As shown in Figures 6 and 7, lift the operating lever 3 so that the cable 7 is positioned between the gripper 1 and the main body 2. Pull down the operating lever 3, and the cable 7 will move upward relative to the main body 2. As the cable 7 enters the clamping position 6, it will simultaneously squeeze the gripper 1 and the trigger end 451 of the drive block 45.

[0055] Initially, the pawl 44 is separated from the ratchet 41. When the gripper 1 is squeezed, it forces the gripper 1 to overcome the torque of the first elastic element 42, causing the gripper 1 and ratchet 41 to rotate clockwise together. The gripper 1 gradually opens, allowing the cable 7 to enter the clamping position 6. However, the torque of the first elastic element 42 gradually increases, causing the gripper 1 to also exert a clamping force on the cable 7. At the same time, when the trigger end 451 of the drive block 45 is squeezed, it forces the drive block 45 to overcome the torque of the third torsion spring 46 and rotate counterclockwise. Figure 3 , 5 As shown, the rotation of the drive block 45 causes the third limiting member 49 on it to rotate together, thereby releasing the obstruction of the pawl 44. Once the obstruction is released, the second elastic member 47, which is in a stored state, immediately releases energy, driving the pawl 44 to rotate rapidly counterclockwise, so that it is firmly engaged with the ratchet 41. At this time, the gripper 1 can no longer open. Under the action of the first elastic member 42, the cable 7 is clamped in the clamping position 6, realizing automatic locking. It should be noted that the magnitude of the torque of the first elastic member 42 needs to meet the following condition: during the process of the cable 7 entering the clamping position 6, the force generated by the cable 7 on the gripper 1 can overcome the torque of the first elastic member 42, so that the gripper 1 can rotate clockwise.

[0056] The unlocking mechanism 5 includes a pusher 51 fixed to the top of the operating lever 3 and a reset assembly.

[0057] like Figure 1 , 2 As shown in Figure 4, the pusher 51 is a rod-shaped structure fixed to the top of the operating rod 3. The diameter of the pusher 51 is smaller than the diameter of the operating rod 3. A movable hole 21 is provided at the bottom of the main body 2 corresponding to the position of the pusher 51. The diameter of the movable hole 21 is equal to or slightly larger than the diameter of the pusher 51, but smaller than the diameter of the operating rod 3, ensuring that the pusher 51 can extend into the main body 2 and move up and down, but the operating rod 3 cannot enter the main body 2. The top of the pusher 51 acts on the bottom of the pawl 44. The bottom of the pawl 44 is an inclined surface, the specific shape of which is as follows: Figure 5 As shown, the slope gradually decreases in height as it approaches the clamping position 6; in other words, the bottom edge of the pawl 44 decreases in height from point B to point C. The pusher 51 enables the pawl 44 to overcome the driving force of the second elastic member 47 and disengage from the ratchet 41. In the initial state, the top of the pusher 51 is separated from the pawl 44. When the operating lever 3 is raised, the top of the pusher 51 contacts the pawl 44 and drives the pawl 44 to rotate clockwise, thus separating the pawl 44 from the ratchet 41.

[0058] Furthermore, such as Figure 4 , 5 As shown, a roller 52 is rotatably mounted on the top of the pusher 51. The surface of the roller 52 can rotate relative to the roller shaft, and the surface of the roller 52 acts on the pawl 44. The contact between the roller 52 and the bottom of the pawl 44 reduces friction and makes operation easier.

[0059] like Figure 1 As shown, the reset assembly includes a spring 53, a guide 54, and a strip hole 55.

[0060] like Figure 1 , 5 As shown, the guide member 54 is fixed to the top of the pusher member 51, and the guide member 54 is a rod-shaped structure. A strip-shaped hole 55 is provided on the main body 2, extending vertically. The horizontal dimension of the strip-shaped hole 55 is equal to the diameter of the guide member 54, allowing the guide member 54 to pass through the strip-shaped hole 55 and move vertically within it. The strip-shaped hole 55 is used to limit the travel distance of the guide member 54. It should be noted that, as... Figure 4 , 5 As shown, in this embodiment, there are two strip holes 55 arranged opposite to each other, and correspondingly, there are also two guides 54 arranged opposite to each other on the pusher 51, so that the pusher 51 is more stable when it moves up and down.

[0061] like Figure 1 , 2 As shown, spring 53 is connected between push member 51 and body 2, and spring 53 is located outside body 2. The diameter of spring 53 is larger than the diameter of movable hole 21, and is used to provide a reset driving force for push member 51. When operating lever 3 and push member 51 are moved upward, spring 53 is compressed, thereby generating a restoring force that causes push member 51 to move downward.

[0062] When the spring 53 is in its free state, the guide 54 is located at the lower end of the strip hole 55, and the top of the pusher 51 is separated from the pawl 44.

[0063] The working process of unlocking mechanism 5 is as follows: Figure 3-5 As shown in Figure 8, when the operating lever 3 is raised, the pusher 51 moves upward, and the guide 54 moves upward to the upper end of the slot 55. The roller 52 pushes the pawl 44. As the roller 52 moves upward, the contact position between the bottom edge of the pawl 44 and the roller 52 moves from point C to point B, causing the pawl 44 to overcome the force of the second elastic element 47 and rotate clockwise, disengaging from the ratchet 41. At this time, the gripper 1 and the ratchet 41 can rotate clockwise, the gripper 1 opens, and the cable 7 is released from the clamping position 6. In addition, when the pusher 51 moves upward, the spring 53 is compressed. After the operating lever 3 is released, the restoring force of the spring 53 drives the pusher 51 to move downward and reset, and the guide 54 also moves downward to the lower end of the slot 55.

[0064] In summary, the initial state is when the pawl 44 is separated from the ratchet 41 and the guide 54 is located at the lower end of the slot 55; the clamping state is when the pawl 44 is engaged with the ratchet 41 and the guide 54 is located at the lower end of the slot 55; and the unlocked state is when the pawl 44 is separated from the ratchet 41 and the guide 54 is located at the upper end of the slot 55.

[0065] The main body 2 includes a first conductive shell and a conductive current-guiding assembly, the conductive current-guiding assembly being provided with a grounding wire connection port; both the first conductive shell and the conductive current-guiding assembly are made of conductive metal material. The operating rod 3 is movably connected to the main body 2, and the operating rod 3 is an insulating rod. This part of the structure is referenced to patent publication number CN120497715B. In this embodiment, the clamping mechanism 4 and the unlocking mechanism 5 are located inside the main body 2.

[0066] When using this embodiment, the operation process is as follows:

[0067] Cable 7 (automatic locking): (e.g.) Figure 6 , 7 As shown, hold the operating lever 3 and place the device above the cable 7. Move the device downwards so that the cable 7 enters the clamping position 6. The cable 7 presses against the trigger end 451 of the drive block 45, causing the drive block 45 to rotate counterclockwise, releasing the restriction on the pawl 44 through the third limiting member 49. The second elastic member 47 drives the pawl 44 to rotate counterclockwise, engaging with the ratchet 41 to achieve locking. At this time, the gripper 1 closes under the action of the first elastic member 42, tightly holding the cable 7. The entire process does not require manual operation of the clamping mechanism, achieving "locking upon attachment".

[0068] Disconnecting cable 7 (one-button unlocking): When disassembly is required, raise the operating lever 3 with one hand. The operating lever 3 moves the pusher 51 upward, and the roller 52 on the top of the pusher 51 acts on the pawl 44, forcing the pawl 44 to rotate clockwise and disengage from the ratchet 41. After the ratchet 41 and pawl 44 are unlocked, the gripper 1 automatically opens under the action of the first elastic member 42, and the cable 7 will be released from the clamping position 6. At the same time, the guide member 54 slides upward in the slot 55, and the spring 53 is compressed. Then release the operating lever 3, the spring 53 drives the pusher 51 to reset, and the guide member 54 returns to the lower end of the slot 55.

[0069] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A handheld, anti-detachment overhead line maintenance device, comprising a main body, grippers rotatably mounted on the main body, and an operating rod movably connected to the main body, wherein the main body and the grippers form a clamping position; characterized in that, It also includes a clamping mechanism and an unlocking mechanism; The clamping mechanism includes a ratchet and pawl assembly rotatably mounted on the main body; The ratchet is fixedly connected to the gripper, and a first elastic element is provided between the ratchet and the main body. The first elastic element provides a driving force for the gripper to close toward the main body. A first limiting element is fixed on the main body to prevent the ratchet from rotating under the action of the first elastic element, so that the first elastic element remains in an energy storage state. The pawl assembly includes a pawl, a drive block, a second elastic element, a second limiting element, and a third limiting element; the pawl and the drive block are each rotatably mounted on the main body, with one end of the drive block near the gripper extending into the clamping position; the second elastic element is connected between the pawl and the drive block to provide a driving force for the pawl to engage with the ratchet; the second limiting element is fixed to the main body to limit the rotation angle of the drive block under the action of the second elastic element. The third limiting member is fixed on the drive block and is used to limit the rotation angle of the pawl under the action of the second elastic member. The unlocking mechanism is used to disengage the pawl from the ratchet to unlock the device.

2. The handheld, anti-detachment overhead line maintenance device according to claim 1, characterized in that, The unlocking mechanism includes a pusher fixed to the top of the operating lever and a reset assembly; The pushing component acts on the pawl, causing the pawl to overcome the driving force of the second elastic component and disengage from the ratchet. The reset assembly includes a spring, a guide fixed to the top of the pusher, and a slotted hole on the main body; the guide passes through the slotted hole and is restricted to vertical movement within the stroke defined by the slotted hole; the spring connects the pusher and the main body to provide a reset driving force for the pusher; in the free state, the guide is located at the lower end of the slotted hole and the top of the pusher is separated from the pawl.

3. The handheld, anti-detachment overhead line maintenance device according to claim 2, characterized in that, The initial state is when the pawl is separated from the ratchet and the guide is located at the lower end of the slot. When the pawl engages with the ratchet and the guide is located at the lower end of the slot, it is in the clamping state; When the pawl is separated from the ratchet and the guide is located at the upper end of the slot, it is in the unlocked state.

4. The handheld, anti-detachment overhead line maintenance device according to claim 3, characterized in that, The first elastic element is a first torsion spring, and the second elastic element is a second torsion spring.

5. A handheld, anti-detachment overhead line maintenance device according to claim 4, characterized in that, A third torsion spring is also provided between the drive block and the main body to provide the drive block with a driving force to rotate toward the clamping position; The second limiting element restricts the rotation angle of the drive block under the action of the second and third torsion springs.

6. A handheld, anti-detachment overhead line maintenance device according to any one of claims 2-5, characterized in that, The top of the pusher is equipped with a roller that rotates, and the surface of the roller acts on the pawl. The side of the pawl that contacts the roller is an inclined surface, and the height of the inclined surface gradually decreases from the direction away from the clamping position to the direction closer to the clamping position.

7. A handheld, anti-detachment overhead line maintenance device according to claim 6, characterized in that, The main body includes a first conductive shell and a conductive current-draining assembly, on which a grounding wire connection port is provided; the clamping mechanism and the unlocking mechanism are located inside the first conductive shell.

8. A handheld, anti-detachment overhead line maintenance device according to claim 7, characterized in that, The grippers, the first conductive housing, and the conductive drainage assembly are all made of conductive metal materials.

Images