A quick and safe unlocking device and unlocking method for wiring clamp
By designing an intelligent gripping grounding wire clamp, using a straight-axis motor and remote control combined with manual unlocking, the problems of excessive weight, large size, time-consuming and labor-intensive installation and removal of traditional grounding wires are solved, achieving efficient and safe high-voltage line grounding wire operations.
Patent Information
- Application Number
- CN202211605649.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-14
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2042-12-14
AI Technical Summary
During the installation and removal of traditional high-voltage grounding wires, they are too heavy, too long, and too large, resulting in high labor intensity, high difficulty in operation, time-consuming, and safety hazards. Existing smart gripping grounding wire clamps have problems such as complex structure, material waste, unstable signal, and battery life risks.
An intelligent gripping wire clamp has been designed. It adopts a straight-axis motor and a lifting transmission sleeve, combined with a remote control and manual unlocking mechanism. The straight-axis motor drives the wire clamp to open and close. It is equipped with a built-in battery and a remote control control panel to reduce the overall volume and weight. Insulating materials and an inductive electric release structure are used to ensure signal stability.
It significantly reduces the weight and volume of the equipment, improves operational efficiency, reduces labor intensity, and ensures safety. Only one electrician on the tower is required to complete the installation and removal of the grounding wire, saving time and manpower and avoiding damage and accidents caused by induced electricity.
Smart Images

Figure CN115832735B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of professional equipment in high-voltage line and power transformation construction industries, and in particular to a quick and safe unlocking device and unlocking method for a wire connection clamp. Background Art
[0002] High-voltage grounding wires are used in high-voltage transmission lines and substation construction. Their main function is to prevent electrostatic induction and electric shock from nearby live objects or to ensure safety when the switch is closed by mistake. Each time a high-voltage grounding wire is connected, a person carries a lifting rope and a lifting pulley to the tower, and then lifts the insulating operating rod, electroscope, and grounding wire. The traditional method for installing and removing grounding wires for AC and DC 500kV transmission lines is to lift the three-phase insulating operating rod, grounding wire, and other tools to the tower using a lifting rope. Figure 1 and Figure 2 As shown, a 500 kV DC insulator string is approximately 10 meters long. Each phase conductor requires at least 10.5 meters of insulating operating rods, each consisting of 1.5 meters per segment x 7 segments. These rods weigh 1.4 kg per segment x 7 segments, which equals 10 kg. The total weight of the three-phase insulating operating rods is 30 kg, making them very heavy and difficult to lift and impede field and overhead operations. When installing and removing grounding wires, each phase insulating operating rod consists of seven segments that must be assembled using screw threads, which is laborious and time-consuming. The seven segments, totaling 10.5 meters, can easily collide with the tower within the confined space of the tower structure, damaging the operating rods and compromising their insulation performance, posing a safety hazard to workers. When removing the grounding wires at the end of the work, the insulating operating rods often become stuck due to the stress, preventing them from being disassembled, hindering the smooth completion of the work. Bolted grounding clamps clamp and release the conductor by rotating the operating rod, which is labor-intensive and time-consuming. Traditionally, installing a 500kV tower grounding cable takes 45 minutes, followed by another 45 minutes for removal, for a total of 90 minutes. This requires two electricians on the tower and two on the ground. Overall, the heavy weight, length, and bulk of the cable lead to labor-intensive, difficult, time-consuming, inefficient, and potentially hazardous operations.
[0003] The applicant's prior application CN110838625A discloses a gripping automatic tightening grounding wire clamp that can clamp and open high-voltage wires through remote control. However, there are still some problems. The mechanical structure is relatively complex, and the disc shaft motor has a rectangular cross-section, resulting in waste of internal space of the main body and the overall structure is relatively large and heavy. It is difficult to process and wastes a lot of materials. The wireless signal is unstable and there are hidden dangers in battery life. Summary of the Invention
[0004] In order to solve the shortcomings and defects of the above-mentioned existing technologies, the inventors have made improvements and research and development to provide an improved and upgraded version of the original design, an intelligent grip-type, efficient and safe wire connection clamp, and updated the supporting operating methods, further reducing the overall volume and weight, reducing the workload and climbing load of operation and maintenance personnel, making the wireless signal connection more stable and reliable, and further improving safety.
[0005] Specifically, the present invention is implemented as follows: a quick and safe unlocking device for a wire connection clamp, comprising a wire connection clamp, the wire connection clamp comprising a shell, a clamping mechanism, a remote control control panel installed in the shell, and a built-in battery, the control mechanism comprising: a straight-axis motor, a lifting transmission sleeve connected to the rotating shaft screw of the straight-axis motor, and a connecting end arranged at the end of the lifting transmission sleeve; the lifting transmission sleeve can drive the connecting end of its end to rise and fall under the forward and reverse rotation of the straight-axis motor; the clamping mechanism comprises: two T-shaped force arms symmetrically distributed at both ends of the connecting end, the middle ends of the T-shaped force arms are connected to the connecting end The two ends are hingedly connected, the lower end of the T-shaped lever is equipped with a wire clamp, the upper end of the T-shaped lever is hingedly connected to the lower end of the movable lever, and the upper end of the movable lever is hingedly connected to the end of the shell; when the connecting end is raised, it can drive the wire clamps to separate and open from each other, and when the connecting end is lowered, it can drive the wire clamps to close and clamp each other; each movable lever includes an upper arm and a lower arm, which are hingedly connected to each other, and an elastic limiter is installed at the upper end of the upper arm, which can limit the range of movement of the lower arm, and a hanging ear is hingedly provided on the elastic limiter. Pulling the hanging ear can release the restriction of the elastic limiter on the lower arm, and the hanging ear is connected to the unlocking rope.
[0006] Furthermore, the elastic limiter includes: an H-shaped lever arm, the upper end of which is coaxially hinged with the upper arm, and the lower end of which is hinged to the hanging ear for connecting the hanging ear, a torsion spring, the spring coil at the upper end of which constitutes the elastic center is installed on the hinge shaft of the upper arm, and the elastic arm at the lower end is sleeved on the top of the H-shaped lever arm, and the hanging ear is a tilting rod-like structure with a bent middle part, one end of the tilting rod extends to the middle of the H-shaped lever arm and contacts the lower arm, and the other end of the tilting rod is provided with a hanging hole, and the upward movement of one end of the hanging hole can drive the other end to move downward and push the lower arm to expand outward, so as to drive the T-shaped lever arm to open and unlock the clamping state.
[0007] Furthermore, the hanging ears are installed between the two hanging holes via a connecting rope, and the connecting rope is connected to an unlocking pull rope, so that pulling the unlocking pull rope can synchronously pull the hanging ears upward.
[0008] Furthermore, the shell is cylindrical, the direct-axis motor is installed inside one end of the shell near the clamping mechanism, the built-in battery is cylindrical and is arranged in the shell above the direct-axis motor near the other end of the shell, and the remote control control panel is installed at the end of the shell; the wire clamp is equipped with a wiring nose for releasing induced electricity.
[0009] Furthermore, the outward ends of the wire clamps are each provided with obliquely installed guide pieces. When the wire clamp is in an open state, the guide pieces are in an eight-shape. When the wire clamp is closed, the guide pieces are vertically close together, and the guide pieces are tangentially connected to the groove surface of the clamping groove on the inner side of the wire clamp.
[0010] Furthermore, a protruding sleeve is provided at one end of the shell close to the clamping mechanism, the lifting transmission sleeve is placed in the sleeve, and the inner wall of one end of the lifting transmission sleeve placed in the shell is provided with an internal thread, and the end of the rotating shaft of the direct-axis motor has an external thread that is compatible with the internal thread, and the length of the internal thread is compatible with the lifting amplitude of the lifting transmission sleeve, which can meet the travel distance from opening to closing between the wire clamps.
[0011] Furthermore, the inner diameter and length of the shell are adapted to the diameter and height of the direct-axis motor and the built-in battery after being stacked and installed, so that the direct-axis motor and the built-in battery are just placed in the inner cavity of the shell, and the whole is tightly wrapped.
[0012] Furthermore, an insulating rope installation fixing point and an external plug-in power supply socket are provided at the center of the rear end of the shell, and the shell is made of insulating material.
[0013] Another aspect of the present invention provides a method for quickly and safely unlocking a wiring clamp, comprising the following steps:
[0014] Step S1: After completing the work, when it is necessary to quickly manually release the wire clamp, pull the unlocking rope and pull the unlocking rope upward;
[0015] Step S2: One end of the hanging hole of the hanging ear is pulled and moves upward, driving the hanging ear's tilting rod to rotate at the hinge point to form a fulcrum, so that the other end of the tilting rod rotates downward along the fulcrum. The tilting rod moves from the inner end to the outer end of the lower arm, releasing the rotation restriction of the lower arm, and the entire wire clamp is in a relaxed state.
[0016] Step S3: The wire clamp is pulled upward by the unlocking rope, driving the entire device to move upward. The high-voltage cable moves downward from the wire clamp and pushes the wire clamp open. The wire clamp pushes the T-shaped force arm and the lower arm to rotate upward, opening the wire clamp, allowing the high-voltage cable to escape from the cable, thereby achieving unlocking.
[0017] The working principle and beneficial effects of the present invention are introduced as follows: During work, the electrician on the tower carries the wiring clamp and the insulating rope to the tower, and after arriving at the position, he makes preparations, opens the wire clamp of the wiring clamp and aligns it with the high-voltage wire below that needs to be connected, then releases the insulating rope and lowers the wiring clamp. When the wiring clamp is lowered to the relative height of the high-voltage wire that needs to be connected, slowly adjust its direction so that the two guide pieces are exactly on both sides of the high-voltage wire, and continue to lower it so that the high-voltage wire enters the wire clamp along the guide pieces. At this time, do not continue to lower the insulating rope, but operate the remote control to send out a command signal for clamping the wire, and the remote control control board in the wiring clamp housing receives the signal. After receiving the remote control signal, the direct-axis motor in the driving housing is reversed. When the direct-axis motor reverses, it can drive the lifting transmission sleeve to retract and lower, and retract and tighten the T-shaped force arms on both sides of the end of the lifting transmission sleeve, so that the wire clamp closes and clamps the high-voltage wire; thereby completing the connection work of the high-voltage wire in the air; after completing the operation, when it is necessary to release the wiring, it is also remotely controlled and an unlocking command is issued. After receiving the control command, the remote control control panel controls the forward rotation of the direct-axis motor. When the direct-axis motor rotates forward, it can drive the lifting transmission sleeve to rise, and push the T-shaped force arms on both sides of the end of the lifting transmission sleeve to open, so that the wire clamp is unfolded, the insulating rope is recovered, and the wire clamp is lifted and recovered. If an unexpected situation occurs such as remote control interruption or the device has no power, and it cannot be unlocked by remote control, manual operation can be performed. During manual operation, pull the operating rope upward, and one end of the hanging hole of the hanging ear is pulled and moves upward, driving the hanging ear's tilting rod to rotate at the hinge point to form a fulcrum, so that the other end of the tilting rod rotates downward along the fulcrum. The process of the tilting rod moving is from the inner end to the outer end of the lower arm, releasing the rotation restriction of the lower arm, and the entire wire clamp is in a relaxed state; the wire clamp is driven by the upward pulling force of the unlocking rope to drive the entire device upward, and the high-voltage cable moves downward from the wire clamp to push the wire clamp open. The wire clamp pushes the T-shaped force arm and the lower arm to rotate upward, opening the wire clamp, so that the high-voltage cable is disengaged from the cable, and unlocking is achieved. By utilizing a remote control system, the grounding device automatically clamps and releases the conductor electrically. Furthermore, an insulating rope replaces the insulating operating rod. The combined weight of the three-phase insulating rope and automatic clamping head is only 1.5 kg, a 28.5 kg reduction compared to traditional methods and a 3.5 kg reduction compared to the previous generation, making it highly advantageous for field and overhead operations. The installation and removal of a 500kV tower grounding wire takes only 50 minutes, 40 minutes less than traditional methods, achieving exceptional efficiency. Due to its lightweight, compact size, and length, the installation and removal of the grounding wire can be completed by only one electrician on the tower, and only one ground electrician is required, saving two personnel compared to traditional methods.This wiring clamp has a scientific, reasonable, safe and reliable structure, and fully considers the internal structure and material selection process, which reduces the overall volume and weight. The original side-axis motor for gripping the grounding clamp is changed to a direct-axis motor through experimental verification to increase torque while reducing power supply loss. The newly added induced electricity release structure avoids burns, broken strands, and even wire breakage accidents caused by induced electricity. The outer shell of the clamp is changed to insulating material, which not only reduces weight but also does not affect signal stability. The battery life, remote control and operating rod adapter ring are improved in terms of ease of use, efficiency, and safety. The weight of the equipment is reduced to reduce the burden on maintenance personnel, and a manual unlocking mechanism is set to enable manual unlocking when the equipment is powered off or the signal is weak and cannot be automatically unlocked, providing the possibility of safe and effective insurance operation for smooth wiring release; further improving and perfecting the usability and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural front view of a quick and safe unlocking device for a wire clamp according to the present invention;
[0019] Figure 2 This is a cross-sectional view of the internal structure of a quick and safe unlocking device for a wire clamp according to the present invention;
[0020] Figure 3 This is a front view of the internal structure of the wire clamp portion of a quick and safe unlocking device for a wire clamp according to the present invention;
[0021] Figure 4 This is a structural front view of a quick and safe unlocking device for a wire clamp of the present invention in a clamping state;
[0022] Figure 5 A schematic diagram of the unlocking steps of a quick and safe unlocking device for a wire clamp according to the present invention;
[0023] Figure 6 This is a front view of the structure of the wire clamp portion of a quick and safe unlocking device for connecting wire clamps of the present invention;
[0024] Figure 7 This is a schematic diagram of a quick and safe unlocking device for a wire clamp according to the present invention in use;
[0025] Figure 8 A three-dimensional schematic diagram of an unlocked state of a quick and safe unlocking device for a wire clamp according to the present invention;
[0026] Wherein: 1 shell, 110 remote control control panel, 111 built-in battery, 112 straight-axis motor, 113 rotating shaft, 114 lifting transmission sleeve, 115 connecting end, 116 T-type lever, 117 wire clamp, 118 wiring nose, 119 guide plate, 120 bushing, 121 insulating rope, 122 fixed hanging point, 123 power socket, 124 upper arm, 125 lower arm, 126 elastic limiter, 127 hanging ear, 128 H-type lever, 129 torsion spring, 130 tilting rod, 131 hanging hole. DETAILED DESCRIPTION
[0027] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.
[0028] Embodiment 1, a quick and safe unlocking device for a wire connection clamp, comprising a wire connection clamp, the wire connection clamp comprising a shell 1, a clamping mechanism, a remote control control panel 110 installed in the shell 1, and a built-in battery 111, the control mechanism comprising: a straight-axis motor 112, a lifting transmission sleeve 114 connected to a screw rod of a rotating shaft 113 of the straight-axis motor 112, and a connecting end 115 arranged at the end of the lifting transmission sleeve 114; the lifting transmission sleeve 114 can drive the connecting end 115 at its end to rise and fall under the forward and reverse rotation of the straight-axis motor 112; the clamping mechanism comprising: two T-shaped force arms 116 symmetrically distributed at both ends of the connecting end 115, the middle ends of the T-shaped force arms 116 are hingedly connected to both ends of the connecting end 115, and the T-shaped force arms 116 are hingedly connected to both ends of the connecting end 115. A wire clamp 117 is installed at the lower end of 16, and the upper end of the T-shaped lever 116 is hingedly connected to the lower end of the movable lever, and the upper end of the movable lever is hingedly connected to the end of the shell 1; when the connecting end 115 is raised, it can drive the wire clamps 117 to separate and open from each other, and when the connecting end 115 is lowered, it can drive the wire clamps 117 to close and clamp each other; each movable lever includes an upper arm 124 and a lower arm 125, and the upper arm 124 and the lower arm 125 are hingedly connected. An elastic limiter 126 is installed at the upper end of the upper arm 124, and the elastic limiter 126 can limit the range of motion of the lower arm 125. A hanging ear 127 is hingedly provided on the elastic limiter 126. Pulling the hanging ear 127 can release the restriction of the elastic limiter 126 on the lower arm 125, and the hanging ear 127 is connected to the unlocking rope. The housing 1 is cylindrical, the direct-axis motor 112 is installed inside one end of the housing 1 near the clamping mechanism, the built-in battery 111 is cylindrical and is arranged inside the housing 1 above the direct-axis motor 112 near the other end of the housing 1, and the remote control control panel 110 is installed at the end of the housing 1; the wire clamp 117 is equipped with a wiring nose 118 for releasing induced electricity.
[0029] Main steps:
[0030] 1. Operators should test the power of the transmission lines to prevent live operation;
[0031] 2. The operator connects the grounding clamp 117 to the grounded grounding wire, carries the grounding clamp 117 and the insulating rope 121 to the tower beam, and takes protective measures;
[0032] 3. The operator connects one end of the insulating rope 121 to the connection part of the grounding clamp 117 and ensures that the grounding clamp 117 is in the open state;
[0033] The operator uses the insulating rope 121 to lower the grounding clamp 117. When the power line enters between the two wire clamps 117, the controller activates the electric cylinder, and the two wire clamps 117 rotate so that their lower ends come together to clamp the power line. The motor stops working, and the power line of that phase is grounded.
[0034] When the operation is completed and the wiring needs to be manually released, pull the unlocking rope and pull it upward to move the hook 127 upward, driving the elastic limiter 126 upward to limit the lower arm 125 of the movable arm, so that it can be in a loose and rotatable state. The entire wire clamp 117 is in a relaxed state, and the unlocking is achieved.
[0035] The elastic limiting member 126 includes: an H-shaped lever 128, the upper end of which is coaxially hinged with the upper arm 124, and the lower end is hinged with the hanging ear 127, which is used to connect the hanging ear 127, a torsion spring 129, the spring ring of which the upper end constitutes the elastic center is installed on the hinge shaft of the upper arm 124, and the elastic arm at the lower end is sleeved above the H-shaped lever 128, and the hanging ear 127 is in the shape of a tilting rod 130 with a bent middle part. One end of the tilting rod 130 extends to the middle of the H-shaped lever 128 and contacts the lower arm 125. The other end of the tilting rod 130 is provided with a hanging hole 131. The upward movement of one end of the hanging hole 131 can drive the other end to move downward and push the lower arm 125 to expand outward, so as to drive the T-shaped lever 116 to open and unlock the clamping state. Under normal circumstances, the elastic limiter 126 maintains a downward clamping force, keeping the lower arm 125 and upper arm 124 in a straight line, operating as a single lever. When one end of the lever 130 is pulled up, it compresses the torsion spring 129. This pulls up the lever 130, releasing the limit on the lower arm 125 at its hinge, allowing it to rotate relative to the upper arm 124. This releases the restraints on the T-arm 116 and the wire clamp 117, placing them in a loose, unfastened state. As the entire device is pulled up, the high-voltage cable detaches from the unfolded wire clamp 117, completing the release. In cases where automatic motor release is not possible, a manual operation function is retained.
[0036] The electrician on the tower carries the wiring clamp and the insulating rope 121 up the tower. After arriving at the location, he makes preparations, opens the wire clamp 117 of the wiring clamp and aligns it with the high-voltage wire below that needs to be connected, then releases the insulating rope 121 and lowers the wiring clamp. When the wiring clamp is lowered to the relative height of the high-voltage wire that needs to be connected, slowly adjust its direction so that the two guide pieces 119 are exactly on both sides of the high-voltage wire, and continue to lower it so that the high-voltage wire enters the wire clamp 117 along the guide pieces 119. At this time, do not continue to lower the insulating rope 121, but operate the remote control to send a command signal for clamping the wire. After the remote control control board 110 in the wiring clamp housing 1 receives the remote control signal, it drives the straight-axis motor in the housing 1 When the straight-axis motor 112 is reversed, the lifting transmission sleeve 114 can be driven to retract and lower, and the T-shaped force arms 116 on both sides of the end of the lifting transmission sleeve 114 are retracted and tightened, so that the wire clamp 117 is closed and clamped with the high-voltage wire; thereby completing the connection work of the high-voltage wire in the air; after the operation is completed, when the wiring needs to be released, it is also remotely controlled and an unlocking command is issued. After receiving the control command, the remote control control panel 110 controls the forward rotation of the straight-axis motor 112. When the straight-axis motor 112 rotates forward, it can drive the lifting transmission sleeve 114 to rise, and push the T-shaped force arms 116 on both sides of the end of the lifting transmission sleeve 114 open, so that the wire clamp 117 is unfolded, the insulating rope 121 is recovered, and the wire clamp is lifted and recovered. An obliquely installed guide piece 119 is provided on the outward end of the wire clamp 117. When the wire clamp 117 is in an open state, the guide pieces 119 form an eight-shaped shape. When the wire clamp 117 is closed, the guide pieces 119 are vertically close together, and the guide pieces 119 are tangentially connected to the groove surface of the clamping groove on the inner side of the wire clamp 117.
[0037] Preferably, a protruding sleeve 120 is provided at one end of the housing 1 near the clamping mechanism, and the lifting transmission sleeve 114 is positioned within the sleeve 120. The inner wall of the end of the lifting transmission sleeve 114 positioned within the housing 1 is provided with an internal thread. The end of the rotating shaft 113 of the direct-axis motor 112 has an external thread that matches the internal thread. The length of the internal thread matches the lifting amplitude of the lifting transmission sleeve 114, which can meet the travel distance between the opening and closing of the clamp 117. The direct rotation of the rotating shaft 113 of the direct-axis motor 112 can drive the lifting transmission sleeve 114 to achieve telescopic movement through the transmission of the threaded rod, which can effectively reduce power consumption and extend battery life. The inner diameter and length of the housing 1 are compatible with the diameter and height of the stacked installation of the direct-axis motor 112 and the built-in battery 111, so that the direct-axis motor 112 and the built-in battery 111 are precisely placed within the inner cavity of the housing 1, forming a tightly wrapped shape as a whole. Due to its lightweight and compact size, only one tower electrician is required to install and remove the grounding wire, and only one ground electrician is required, saving two people compared to traditional methods. This wiring clamp has a scientific, reasonable, safe and reliable structure, fully considering the internal structure and material selection process, which reduces both the overall size and weight. The original side-axis motor of the grounding clamp 117 has been replaced by a direct-axis motor through experimental verification to increase torque while reducing power loss. The newly added induced electricity release structure avoids burns, broken strands, and even disconnection accidents caused by induced electricity. The outer shell of the clamp 117 has been changed to an insulating material, which not only reduces weight but also does not affect signal stability. The battery life, remote control, and joystick adapter ring have been improved in terms of ease of use, efficiency, and safety. The reduced equipment weight reduces the burden on maintenance personnel.
[0038] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.
Claims
1. A quick and safe unlocking device for a wire clamp, comprising a wire clamp, characterized in that: The wire clamp comprises a housing (1), a clamping mechanism, a remote control panel (110) installed in the housing (1), and a built-in storage battery (111). The control mechanism comprises: a straight-axis motor (112), a lifting transmission sleeve (114) connected to a screw rod of a rotating shaft (113) of the straight-axis motor (112), and a connecting end (115) arranged at the end of the lifting transmission sleeve (114); the lifting transmission sleeve (114) can drive the connecting end (115) at its end to rise and fall under the forward and reverse rotation of the straight-axis motor (112); The clamping mechanism comprises two T-shaped force arms (116) symmetrically distributed at both ends of the connecting end (115), the middle ends of the T-shaped force arms (116) are hingedly connected to both ends of the connecting end (115), the lower ends of the T-shaped force arms (116) are provided with wire clamps (117), the upper ends of the T-shaped force arms (116) are hingedly connected to the lower ends of the movable force arms, and the upper ends of the movable force arms are hingedly connected to the ends of the housing (1); when the connecting end (115) is raised, the wire clamps (117) can be driven to separate and open from each other, and when the connecting end (115) is lowered, the wire clamps (117) can be driven to close and clamp together; Each movable arm includes an upper arm (124) and a lower arm (125), the upper arm (124) and the lower arm (125) are hingedly connected, an elastic limiting member (126) is installed on the upper end of the upper arm (124), the elastic limiting member (126) can limit the range of motion of the lower arm (125), and a hanging ear (127) is hingedly provided on the elastic limiting member (126). Pulling the hanging ear (127) can release the restriction of the elastic limiting member (126) on the lower arm (125), and the hanging ear (127) is connected to the unlocking rope; The elastic limiting member (126) includes: The upper end of the H-shaped lever arm (128) is coaxially hinged with the upper arm (124), and the lower end is hinged with the hanging ear (127) for connecting the hanging ear (127). The torsion spring (129) has a spring coil at its upper end forming an elastic center mounted on the hinge shaft of the upper arm (124), and an elastic arm at its lower end is sleeved above the H-shaped lever arm (128). The hanging ear (127) is in the shape of a tilting rod (130) with a bent middle portion. One end of the tilting rod (130) extends to the middle portion of the H-shaped lever (128) and contacts the lower arm (125). The other end of the tilting rod (130) is provided with a hanging hole (131). When one end of the hanging hole (131) moves upward, the other end can move downward and push the lower arm (125) to expand outward, thereby driving the T-shaped lever (116) to open and unlock the clamping state. The housing (1) is cylindrical, the direct-axis motor (112) is mounted inside one end of the housing (1) close to the clamping mechanism, the built-in storage battery (111) is cylindrical and is arranged inside the housing (1) above the direct-axis motor (112) and close to the other end of the housing (1), and the remote control panel (110) is mounted at the end of the housing (1); The wire clamp (117) is provided with a wiring nose (118) for releasing induced electricity.
2. The quick safety unlocking device according to claim 1, characterized in that: The hanging ears (127) are installed between the two hanging holes (131) via a connecting rope, and the connecting rope is connected to the unlocking pull rope. Pulling the unlocking pull rope can synchronously pull the hanging ears (127) upward.
3. The quick safety unlocking device according to claim 1, characterized in that: The outward end of the wire clamp (117) is provided with an obliquely installed guide piece (119). When the wire clamp (117) is in an open state, the guide pieces (119) are in an eight-shaped shape. When the wire clamp (117) is closed, the guide pieces (119) are vertically close together, and the guide pieces (119) are tangentially connected to the groove surface of the clamping groove on the inner side of the wire clamp (117).
4. The quick safety unlocking device according to claim 1, characterized in that: The housing (1) is provided with a protruding shaft sleeve (120) at one end close to the clamping mechanism, and the lifting transmission sleeve (114) is placed in the shaft sleeve (120). The inner wall of one end of the lifting transmission sleeve (114) placed in the housing (1) is provided with an internal thread, and the end of the rotating shaft (113) of the straight-axis motor (112) has an external thread adapted to the internal thread, and the length of the internal thread is adapted to the lifting amplitude of the lifting transmission sleeve (114), so as to meet the travel distance from opening to closing between the wire clamp (117).
5. The quick safety unlocking device according to claim 1, characterized in that: The inner diameter and length of the housing (1) are adapted to the diameter and height of the stacked installation of the direct-axis motor (112) and the built-in storage battery (111), so that the direct-axis motor (112) and the built-in storage battery (111) are exactly placed in the inner cavity of the housing (1), and the whole is tightly wrapped.
6. The quick safety unlocking device according to claim 1, characterized in that: An insulating rope (121), a fixing hanging point (122) and an external plug-in power supply socket (123) are provided at the center of the rear end of the shell (1), and the shell (1) is made of insulating material.
7. A quick and safe unlocking method for connecting wire clamps, characterized in that The following steps are involved: Step S1: After completing the work, when it is necessary to quickly manually release the wire clamp, pull the unlocking rope and pull the unlocking rope upward; Step S2: One end of the hanging hole (131) of the hanging ear (127) is pulled and moves upward, driving the tilting rod (130) of the hanging ear (127) to rotate at a fulcrum formed at a hinge point, so that the other end of the tilting rod (130) rotates downward along the fulcrum. The tilting rod (130) moves from the inner end to the outer end of the lower arm (125), releasing the rotation restriction of the lower arm (125), and the entire wire clamp (117) is in a relaxed state. Step S3: The wire clamp is pulled upward by the unlocking rope, and the entire device moves upward. The high-voltage cable moves downward from the wire clamp (117) and pushes the wire clamp (117) away. The wire clamp (117) pushes the T-shaped force arm and the lower arm (125) to rotate upward, opening the wire clamp (117) so that the high-voltage cable is released from the cable, thereby achieving unlocking.
Citation Information
Patent Citations
Gripping automatic fastening grounding wire clamp and using method thereof
CN110838625A
Quick and safe unlocking device for wiring wire clamp
CN219226657U