A clamping assembly and ignition device with emergency unlocking function

Abstract

This utility model relates to the field of high-altitude electrical construction, specifically a clamping assembly and fire-connecting device with an emergency unlocking function. It includes a clamping claw that rotates with a protective shell and a pin that passes through the clamping claw and the protective shell to achieve their rotational installation. At least one end of the pin has a recessed hole, and a protrusion is movably provided within the recessed hole. The portion of the protrusion extending outside the recessed hole has a smooth curve structure so that when a dragging force is applied along the pin's axial direction, the portion of the protrusion extending outside the recessed hole can retract into the recessed hole, allowing the pin to be removed from the clamping claw and the protective shell. This utility model, through the pin, provides a fast, reliable, and tool-free emergency unlocking method. In the event of a malfunction in the clamping claw's reset action, this pin can remove the clamping claw from the protective shell, thereby urgently resolving the malfunction of the clamping claw.

Description

Technical Field

[0001] This utility model relates to the field of high-altitude power construction, specifically a clamping component and a fire-connecting device with an emergency unlocking function. Background Technology

[0002] Parallel clamps are hardware used in power lines to connect conductors or branch leads in parallel, mainly for splicing applications where tension is not required. They are characterized by their simple structure and easy installation, and are suitable for applications such as jumper connections, branch leads, and equipment leads in overhead lines. Their structure, as described in announcement number "CN203339319U", includes a pressure plate, an upper cover, a lower cover, and a bolt assembly. Tightening the bolt assembly causes the upper and lower covers to move towards each other or separate, clamping the conductors. When the upper cover is attached to the lower cover, it forms two clamping slots, which are used to clamp the main line and the branch line respectively, achieving connection.

[0003] During the connection process of the wire clamp, manual high-altitude live-line work is required. In the installation process, the auxiliary line and the main line are first placed in the clamping groove of the wire clamp by hand. Then, a striking cylinder (a specially designed sleeve, usually used with hydraulic or mechanical impact tools, with hexagonal or plum-shaped grooves inside to fit the bolt head or nut, and transmits torque through external impact force to achieve rapid tightening or disassembly) is used to strike the bolt assembly of the wire clamp, causing the upper and lower covers of the wire clamp to move towards each other, thereby clamping the main line and the auxiliary line, and completing the installation of the wire clamp.

[0004] During installation, due to the high-altitude environment, the connection is unstable when hanging or encountering strong winds. During the tightening of the clamps, the main line or auxiliary line is prone to slipping out of the clamp's groove. Operators must ensure that the main line and auxiliary line are aligned with the groove while operating the striking cylinder, which is difficult and risky. Therefore, in order to address the above-mentioned defects, a search revealed a patent document with application publication number CN116365323A that discloses a special-shaped parallel groove clamp for fire connection installation and an installation method. The proposed clamp provides a basic operating platform for wire clamp fire connection installation under high-altitude mechanical operations.

[0005] However, the positioning part of the aforementioned fixture specifically includes a secondary line pressure rod horizontally hinged to the top of the secondary line guide fork. The secondary line pressure rod is sequentially connected to the drive cylinder via a drive link and an arc rod, thereby enabling controllable switching between the opening and clamping postures of the positioning part. Based on the hinged connection between the secondary line guide fork and the secondary line pressure rod, the secondary line guide fork and the secondary line pressure rod are installed using a pin. Since the clamping action of the secondary line pressure rod can be achieved by the drive cylinder, the pin between the secondary line pressure rod and the secondary line guide fork needs to be kept firmly connected. That is, the installation method of this pin is a fixed, non-removable connection to accommodate different clamping actions of the secondary line pressure rod. When the ignition work is completed, if a sudden situation occurs such as a drive cylinder failure (e.g., hydraulic system pressure loss) or a link jamming (e.g., due to foreign object intrusion, lubrication failure, or structural deformation), the drive cylinder or link cannot provide a reverse driving force or a smooth movement path to reset the secondary line pressure rod and release the pressure on the secondary line, causing the secondary line pressure rod to always be in a pressing state on the secondary line. Given the inherent dangers and inconveniences of working at heights, if this malfunction persists for an extended period, it will pose a serious threat to overhead cables and personnel.

[0006] First, the continuous pressure applied to the secondary conductor may cause plastic deformation, damage to the insulation layer, or even strand breakage, directly affecting the electrical performance and mechanical strength of the line and creating potential operational hazards. More importantly, workers trapped at height will face the predicament of being unable to evacuate safely or take effective measures, requiring additional complex rescue operations to resolve the fault. This not only significantly prolongs the exposure time at height, greatly increasing the risk of secondary accidents such as falls and electric shocks, but also poses a potential safety threat to equipment or areas below the fault point.

[0007] Therefore, we propose a new clamping assembly to provide a reliable fault reset mechanism. Utility Model Content

[0008] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a clamping component with an emergency unlocking function. Under normal circumstances, the pin in the clamping component enables the wire clamping claw to be installed on the protective shell. When a fault occurs, the pin can be moved out to release the lock between the two and ensure the normal operation of the welding work.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A clamping assembly with an emergency unlocking function includes a clamping claw that rotates with a protective shell, and a pin that passes through the clamping claw and the protective shell to achieve rotational installation of the two. At least one end of the pin is provided with a recess, and a protrusion is movably provided in the recess. The portion of the protrusion protruding outside the recess has a smooth curve structure so that when a dragging force is applied to the pin along its axial direction, the portion of the protrusion protruding outside the recess can retract into the recess and move the pin out of the clamping claw and the protective shell.

[0011] As a further embodiment of this utility model: the protrusion is provided as a spring bead, which can extend and retract along the depth direction of the concave hole.

[0012] As a further improvement of this invention, the clamping assembly also includes a pull rope that is fixedly connected to the pin.

[0013] As a further embodiment of this utility model: a fixed pulley is rotatably provided on the protective shell, and a pull rope is wound around the groove of the fixed pulley. The section of the pull rope between the pin and the fixed pulley is axially aligned with the pin, so that when a pulling force is applied to the pull rope in any direction, the pin is subjected to a pulling force along its axial direction.

[0014] As a further improvement of this utility model: the protective shell is provided with a housing for covering the setting pulley, and the housing has an inlet and an outlet for the pull rope to pass through and out respectively.

[0015] As a further improvement of this utility model, the angle at which the pull rope is wound around the fixed pulley is ninety degrees.

[0016] As a further improvement of this utility model, the pressing side of the pressing claw is designed in an arc shape.

[0017] A fire-fighting device includes a clamping assembly with an emergency unlocking function as described above, and also includes a striking cylinder built into a protective shell and a wire clamp that is elastically clamped and fixed by a wire clamp on the protective shell, wherein the bolt on the wire clamp corresponds to the striking end position of the striking cylinder.

[0018] As a further improvement of this utility model: the protective shell is provided with a guide fork located on the main line mounting side, and the guide fork and the wire clamp form an upward-opening V-shaped guide channel, the tip of the V-shaped guide channel corresponding to the wire groove position on the main line side of the wire clamp.

[0019] As a further improvement of this utility model: the protective shell is also provided with a clamping device located on the side where the secondary line is installed. The clamping device includes a clamping claw that rotates with the protective shell. The pin shaft is arranged parallel to the axis of the wire groove of the wire clamp. The clamping claw is driven to rotate by a power source to clamp the secondary line onto the wire groove on the secondary line side of the wire clamp. The movement trajectory of the clamping claw avoids the position of the wire clamp.

[0020] As a further improvement of this utility model: with the pin shaft as the boundary, one side of the pressure claw is an arc-shaped pressure end, and the other side of the pressure claw is a drive end connected to the guide slider; the guide slider is driven to rise and fall by the power source, so as to drive the pressure claw to press and position the sub-line.

[0021] As a further embodiment of this utility model: the power source includes a lifting screw arranged with a plumb bob inside the protective shell, a positioning pin is horizontally arranged on the screw slide of the lifting screw, and a guide groove is opened along the length direction on the guide slider. The width of the guide groove corresponds to the diameter of the positioning pin, and the positioning pin is inserted into the guide groove and slides in cooperation with the guide groove.

[0022] As a further improvement of this utility model: two sets of wire clamping claws are provided, symmetrically arranged on both sides of the wire clamp along the length of the secondary wire; the driving end of the wire clamping claw and the guide slider form a detachable fixing.

[0023] As a further embodiment of this utility model: the wire clamp includes two sets of clamp bases fixed on the protective shell. The two clamp bases are symmetrically distributed on both sides of the wire clamp. A sliding groove is opened on the clamp base along the horizontal direction. A clamping block is installed in the sliding groove. An elastic unit is installed on the side of the clamp base away from the wire clamp. The clamping block is elastically clamped by the action of the elastic unit.

[0024] As a further embodiment of this utility model: the elastic unit includes a guide rod horizontally mounted on the clamp base, the guide rod passing through the clamp block and slidingly engaging with the clamp block; a spring seat is provided at the end of the guide rod and arranged parallel to the clamp base, a spring is sleeved on the guide rod, and the two ends of the spring abut against the clamp block and the spring seat respectively.

[0025] As a further improvement of this utility model: along the direction close to the wire clamp, the width of the clamping end of the clamping block gradually narrows, so that the vertical cross section of the clamping block is an isosceles trapezoidal shape, and the clamping end of the clamping block abuts and cooperates with the upper and lower clamping plates of the wire clamp.

[0026] As a further improvement of this utility model: the protective shell is provided with a positioning seat for fixing the insulating rod, and the positioning seat has a slot opened in the horizontal direction, and the end of the insulating rod is horizontally inserted into the slot of the positioning seat for positioning.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. This application provides a fast, reliable, and tool-free emergency unlocking method through the use of a pin. When the resetting action of the wire clamp malfunctions, this pin can remove the wire clamp from the protective housing, thereby urgently resolving the malfunction. Specifically, by providing a concave hole structure with a smooth-curved protrusion at the end of the pin, when unlocking is required, only a dragging force needs to be applied along the pin's axial direction, and the protrusion will overcome resistance and retract into the concave hole. This allows the pin to smoothly slide out of the mounting holes of the wire clamp and the protective housing, thereby achieving immediate separation of the clamping components. The smooth-curved construction ensures smooth movement of the protrusion when retracting under force, preventing jamming and improving the reliability of the unlocking action.

[0029] 2. The protrusion adopts a spring ball structure, and its built-in spring can provide stable extension and retraction force. When axial tension is applied, the spring ball can smoothly retract into the concave hole, realizing the removal of the pin; when the pin is re-inserted into the crimping claw and protective shell, the spring ball can automatically pop out and reset, which facilitates the reinstallation of the pin.

[0030] 3. By introducing a pull rope as the unlocking mechanism, the unlocking operation is made remote and convenient. With the pull rope fixed to the pin, the operator does not need to directly contact the pin itself; simply pulling the rope from a convenient location triggers the unlocking action. This greatly improves the safety and convenience of the operation, especially in emergency or space-constrained situations, allowing the operator to apply unlocking force more easily and quickly.

[0031] 4. By setting a fixed pulley and specifying the direction of the pull rope, the accuracy of the unlocking force direction and the flexibility of operation are ensured. The fixed pulley effectively changes the direction of the force applied to the pull rope. The section of the pull rope between the pin and the fixed pulley is designed to be parallel to the pin's axis. This ensures that regardless of the direction from which the operator pulls the free end of the rope, the force ultimately transmitted to the pin after being redirected by the fixed pulley is strictly along its axial direction. This eliminates the risk of unlocking failure or mechanism jamming due to incorrect force direction, greatly improving the success rate of emergency unlocking actions.

[0032] 5. By adding an outer shell to protect the fixed pulley, the shell completely covers the pulley, forming a physical protective barrier that effectively prevents external contaminants such as dust, debris, moisture, and oil from entering the pulley mechanism. At the same time, the shell also provides some restraint to the pull rope, ensuring it remains tightly against the groove of the fixed pulley. Attached Figure Description

[0033] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0034] Figure 2 This is a schematic diagram of the wire clamp fixture in Embodiment 1 of this utility model.

[0035] Figure 3 This is a schematic diagram of the pin and pull rope structure in Embodiment 2 of this utility model.

[0036] Figure 4 This is a schematic diagram of the pin structure in Embodiment 2 of this utility model.

[0037] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of the present utility model. Figure 1 .

[0038] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0039] Figure 7 This is a three-dimensional structural diagram of Embodiment 2 of the present utility model. Figure 2 .

[0040] Figure 8 for Figure 7 A magnified structural diagram at point B in the middle.

[0041] Figure 9 This is a side view of the structure of Embodiment 2 of this utility model.

[0042] Figure 10 This is a front view structural diagram of Embodiment 2 of this utility model.

[0043] In the picture:

[0044] 1. Protective casing; 11. Guide fork;

[0045] 2. Clamping device; 21. Screw slide; 211. Locating pin;

[0046] 22. Guide slider; 221. Guide groove;

[0047] 23. Wire clamping claw; 24. Pin; 2401. Concave hole; 2402. Protrusion; 25. Lifting screw;

[0048] 3. Wire clamp; 31. Clamping block; 32. Guide rod;

[0049] 34. Spring seat; 35. Clamp base;

[0050] 4. Strike tube; 5. Positioning base;

[0051] 6. Wire clamp; 61. Upper clamp plate; 62. Lower clamp plate; 63. Wire groove; 64. Bolt;

[0052] 7. Main storyline; 8. Sub-storyline;

[0053] 9. Outer shell;

[0054] 10. Pull the rope;

[0055] 12. Fixed pulley. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0057] Example 1:

[0058] Please see Figures 1-2 In this embodiment of the present invention, a fire-receiving device includes a protective shell 1, and a striking cylinder 4 for fastening a wire clamp 6 is built into the protective shell 1. The striking cylinder 4 can be connected to the protective shell 1 through conventional connection methods in the prior art. The striking cylinder 4 is an existing structure, so it will not be described in detail. For example, the striking cylinder 4 can be the striking head described in patent application number 202310169690.2.

[0059] The protective shell 1 is provided with a positioning seat 5. The positioning seat 5 has a slot opened in the horizontal direction. The end of the insulating rod is horizontally inserted into the slot of the positioning seat 5 for positioning. Thus, the positioning seat 5 achieves detachable fixation of the insulating rod. When performing the fire connection work, the staff can send the fire connection device to the main line fire connection point by holding the insulating rod.

[0060] The protective shell 1 has a wire clamp 3 installed directly above the striking cylinder 4, which clamps the wire clamp 6. The wire clamp 6 includes an upper clamping plate 61 and a lower clamping plate 62. The upper clamping plate 61 and the lower clamping plate 62 are symmetrically provided with wire grooves 63. The two sets of wire grooves 63 on the upper clamping plate 61 and the lower clamping plate 62 are used to clamp the main wire 7 and the auxiliary wire 8, respectively.

[0061] The grooves 63 on both the upper clamping plate 61 and the lower clamping plate 62 are serrated to increase the friction with the wires. The upper clamping plate 61 and the lower clamping plate 62 are connected by bolts 64, and a nut is threaded onto the bottom of the bolts 64. Figure 2 The diagram shows two sets of bolts 64. Correspondingly, there are also two sets of nuts. When the wire clamp 3 is located on the protective shell 1, the two sets of nuts are respectively located in the two sets of striking cylinders 4 below it. Each striking cylinder 4 has a recessed hole that matches the shape of the nut, so that the rotation of the striking cylinder 4 can drive the nut to rotate, achieving the clamping action of the upper clamping plate 61 and the lower clamping plate 62. When it is necessary to tighten the wire clamp 6, the striking cylinder 4 screws on the nut, causing the upper clamping plate 61 and the lower clamping plate 62 to cooperate in clamping the main wire 7 and the auxiliary wire 8 simultaneously.

[0062] The wire clamp 3 includes a vertically arranged clamp base 35 with a horizontally oriented sliding groove on the clamp base 35. The clamping block 31 is slidably disposed within the sliding groove. Two sets of guide rods 32 are horizontally fixed at the end of the clamp base 35 away from the wire clamp 6. The two sets of guide rods 32 are vertically aligned and arranged parallel to each other. The ends of the two sets of guide rods 32 are fixed to spring seats 34, and both sets of guide rods 32 pass through the clamping block 31, slidingly engaging with the clamping block 31. Springs are fitted on the guide rods 32, with both ends of the springs abutting against the clamping block 31 and the spring seat 34, respectively. The springs apply an elastic force to the clamping block 31, allowing the two sets of clamping blocks 31 to clamp the wire clamp 6.

[0063] Clamping blocks 31 are arranged on the axis of symmetry of the upper clamping plate 61 and the lower clamping plate 62. Along the direction close to the wire clamp 6, the width of the clamping end of clamping block 31 gradually narrows, and the vertical cross-section is an isosceles trapezoid. During the clamping process, the gradually changing size design of the clamping surface of clamping block 31 adapts to the tightening process of wire clamp 6.

[0064] With the fixed position of the wire clamp 6 as the boundary, the protective shell 1 has a guide fork 11 on one side of the wire clamp 6 and a clamping device 2 on the other side of the wire clamp 6. The guide fork 11 is used to guide the main wire 7, and the clamping device 2 is used to clamp and fix the sub-wire 8 onto the corresponding wire groove 63 in advance before tightening the sub-wire 8.

[0065] The guide fork 11 is arranged at an angle, and the guide fork 11 and the wire clamp 3 enclose an upward-opening V-shaped guide channel. The tip of the V-shaped guide channel corresponds to the position of the wire groove 63 on the main wire side of the wire clamp 6. After the main wire 7 slides along the guide fork 11, it finally falls into the wire groove 63 on the main wire side of the lower clamp 62. The groove surfaces of the upper clamp 61 and the lower clamp 62 are both serrated to increase the friction between them and the wire.

[0066] A wire clamping claw 23 is mounted on the protective shell 1 via a pin 24. The wire clamping claw 23 rotates with the protective shell 1 via the pin 24, thereby clamping the sub-wire 8. The axis of the pin 24 is arranged parallel to the axis of the sub-wire 8. The clamping end of the wire clamping claw 23 is arc-shaped, adapted to the wire diameter of the sub-wire 8, and clamps the sub-wire 8 by tilting from top to bottom. The other end of the wire clamping claw 23 is the drive end, which is connected to the guide slider 22. The connection method can be selected by plug-in positioning or screw fixing, etc. Different sizes of wire clamping claws 23 can be replaced according to different wire diameters of the sub-wire 8. Preferably, two sets of wire clamping claws 23 are provided, symmetrically arranged on both sides of the wire clamp 6, so as to clamp and position the sub-wire 8 at two points, and the rotation trajectory of the wire clamping claw 23 avoids the position of the wire clamp 6.

[0067] The clamping device 2 includes a vertically arranged lifting screw 25 inside the protective shell 1. A screw slide 21 is provided on the lifting screw 25. A horizontally arranged positioning pin 211 is symmetrically arranged on the screw slide 21. A guide groove 221 is provided on the guide slider 22 along its length direction. The positioning pin 211 is inserted into the guide groove 221 and slides and is positioned in the guide groove 221.

[0068] The construction work specifically includes the following steps:

[0069] On the ground, insert the wire clamp 6 into the wire clamp fixture 3 from top to bottom, and the wire clamp fixture 3 will elastically clamp and fix the wire clamp 6. Insert the auxiliary wire 8 into the corresponding wire groove 63, activate the clamping device 2, and while the lead screw slide 21 moves up and down along the lifting lead screw 25, the positioning pin 211 slides along the guide groove 221 of the lead screw slide 21, thereby driving the guide slider 22 and the wire pressing claw 23 connected to the guide slider 22 to rotate, so that the wire pressing claw 23 clamps and fixes the auxiliary wire 8. This is the pre-fixing of the auxiliary wire 8 by the wire pressing claw 23. Then, connect and fix the insulating rod to the positioning seat 5, and the operator holds the insulating rod and carries the fire-fighting device to the working height. Upon reaching the working height, the insulated rod supports the fire-connecting device, allowing the main line 7 to enter the corresponding cable tray 63 along the guide fork 11. In this state, the auxiliary line 8 is pre-fixed in the cable tray 63 by the clamping claw 23, while the main line 7 is simply located in another cable tray 63. At this point, the striking cylinder 4 is activated to tighten the clamp 6, causing the clamp 6 to simultaneously press the main line 7 and the auxiliary line 8, thus completing the fire-connecting operation. Subsequently, the clamping claw 23 is driven to reset, ensuring that the auxiliary line 8 is only clamped and fixed by the clamp 6. Then, the fire-connecting device is moved downwards, causing the clamp 6 to disengage from the clamp fixture 3, completing the construction operation. The rotation of the clamping claw 23 and the striking cylinder 4 can be controlled remotely to further simplify the complexity of high-altitude operations.

[0070] Example 2:

[0071] Please see Figures 3 to 10 This embodiment proposes a clamping assembly with an emergency unlocking function based on Embodiment 1. The clamping assembly includes a clamping claw 23 that rotates with the protective shell 1, and a pin 24 that passes through the clamping claw 23 and the protective shell 1 to achieve their rotational installation. Furthermore, to enable automated operation of the clamping claw 23, the clamping assembly also includes a drive assembly. The drive assembly can be any drive component in the prior art, as long as it can achieve the rotational movement of the clamping claw 23. Preferably, the drive assembly is a vertically arranged lifting screw 25 within the protective shell 1. The lifting screw 25 here is the same as in Embodiment 1: the lifting screw 25 is provided with a screw slide 21, and horizontally arranged positioning pins 211 are symmetrically arranged on the screw slide 21. A guide groove 221 is formed along the length of the guide slider 22, and the positioning pins 211 are inserted into the guide groove 221 and slidably engaged with the guide groove 221 for positioning.

[0072] To ensure that the pin 24 can securely connect the crimping claw 23 and the protective shell 1 and prevent the pin 24 from shifting left and right, this application provides a recess 2401 at at least one end of the pin 24. A protrusion 2402 is movably provided within the recess 2401, and the portion of the protrusion 2402 extending out of the recess 2401 has a smooth curve structure. Under normal circumstances, a portion of the protrusion 2402 protrudes out of the recess 2401. When the pin 24 shifts left or right, the shifting force is small, and the portion of the protrusion 2402 extending out of the recess 2401 can provide resistance, ensuring that the pin 24 maintains normal insertion. When the pressure claw 23 finishes pressing the sub-line 8, and it is necessary to release the pressure of the pressure claw 23 on the sub-line 8, if the lifting screw 25 cannot rotate or the screw slide 21 cannot move, it means that the pressure claw 23 is always pressing the sub-line 8 and cannot perform subsequent work. At this time, a dragging action can be applied to the pin 24 along its axial direction. Under a large dragging action, the part of the protrusion 2402 protruding outside the concave hole 2401 can retract into the concave hole 2401. Therefore, the pin 24 will move out of the pressure claw 23 and the protective shell 1. The removal of this pin 24 can destroy the installation state of the pressure claw 23 on the protective shell 1, so that the pressure claw 23 is detached from the protective shell 1, thus releasing the pressure state on the sub-line 8.

[0073] The protrusion 2402 mentioned above can be a conventional technique, such as a spring bead. The ball head of the spring bead has a matching smooth curve structure, and the spring bead can extend and retract along the depth direction of the recess 2401. During the movement of the pin 24, the force exerted on the spring bead in the extension direction is relatively small, and it cannot be fully compressed into the recess 2401. The pin 24 is blocked axially by the spring bead, thus maintaining its position. When it is necessary to release the pressing state of the clamping claw 23, the larger drag force applied axially to the pin 24 at this time can compress the spring bead into the recess 2401. There is no obstruction axially on the pin 24, and the pin 24 can be fully pulled out. This dragging process can be compared with the closing action of an umbrella.

[0074] To facilitate high-altitude operations, a pull rope 10 is fixedly installed on the pin 24. During construction, the pull rope 10 is always in the hands of the workers. If the pressing state of the wire pressing claw 23 cannot be released, the workers can directly drag the pull rope 10, causing the pin 24 to move off the wire pressing claw 23 and the protective shell 1.

[0075] Furthermore, such as Figure 10As shown, when the pressure claws 23 on the same side are set into two sets, the two sets of pins 24 are distributed in the same straight line. The two ends of the pull rope 10 can be set at the far ends of the two pins 24 respectively. When a fault occurs, the staff can directly pull the pull rope 10 to remove the two sets of pins 24 at the same time.

[0076] Furthermore, to ensure that the pulling direction of the pull rope 10 on the pin 24 is always along the axial direction of the pin 24, thus facilitating the pulling of the pin 24, this application includes a rotatable pulley 12 on the protective housing 1. The pull rope 10 is wound around the groove of the pulley 12, and the section of the pull rope 10 between the pin 24 and the pulley 12 is axially aligned with the pin 24. This ensures that when a pulling force is applied to the pull rope 10 in any direction, the pin 24 experiences a pulling force along its axial direction. Simultaneously, the section of the pull rope 10 between the pin 24 and the pulley 12 is designed to be parallel to the axial direction of the pin 24. This ensures that regardless of the direction from which the operator pulls the free end of the pull rope 10, the force ultimately transmitted to the pin 24 after the deflection by the pulley 12 is strictly along its axial direction. This eliminates the risk of unlocking failure or mechanism jamming due to incorrect pulling force direction, significantly improving the success rate of emergency unlocking actions.

[0077] Meanwhile, to protect the fixed pulley 12 and provide a mounting platform for it, a housing 9 is provided on the protective shell 1 to cover the fixed pulley 12. The housing 9 has an inlet and an outlet for the pull rope 10 to pass through. The inlet and outlet are located at the top and bottom of the housing 9, respectively, so that the angle of the pull rope 10 around the fixed pulley 12 is ninety degrees. Of course, in use, the inlet and outlet can be located at different positions depending on the environment, so that the direction of the pull rope 10 along the outlet can be selectively changed.

[0078] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0079] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

Claims

1. A clamping assembly with an emergency unlocking function, characterized in that, The device includes a wire clamping claw (23) that rotates with the protective shell (1), and a pin (24) that passes through the wire clamping claw (23) and the protective shell (1) to achieve their rotational installation. At least one end of the pin (24) is provided with a recess (2401). A protrusion (2402) is movably provided in the recess (2401), and the part of the protrusion (2402) protruding outside the recess (2401) has a smooth curve structure so that when a dragging action is applied to the pin (24) along its axial direction, the part of the protrusion (2402) protruding outside the recess (2401) can retract into the recess (2401) and the pin (24) can be removed from the wire clamping claw (23) and the protective shell (1).

2. A clamping assembly with an emergency unlocking function according to claim 1, characterized in that, The protrusion (2402) is configured as a spring bead, which can extend and retract along the depth direction of the concave hole (2401).

3. A clamping assembly with an emergency unlocking function according to claim 1 or 2, characterized in that, The clamping assembly also includes a pull rope (10) that is fixedly connected to the pin (24).

4. A clamping assembly with an emergency unlocking function according to claim 3, characterized in that, The protective shell (1) is provided with a fixed pulley (12) for rotation. The pull rope (10) is wound in the groove of the fixed pulley (12), and the section of the pull rope (10) between the pin (24) and the fixed pulley (12) is axially aligned with the pin (24). When the pull rope (10) is subjected to a pulling force in any direction, the pin (24) is subjected to a pulling force along its axial direction.

5. A clamping assembly with an emergency unlocking function according to claim 4, characterized in that, The protective shell (1) is provided with a housing (9) for covering the setting pulley (12), and the housing (9) has an inlet and an outlet for the pull rope (10) to pass through and out respectively.

6. A clamping assembly with an emergency unlocking function according to claim 4, characterized in that, The angle at which the pull rope (10) is wound on the fixed pulley (12) is ninety degrees.

7. A clamping assembly with an emergency unlocking function according to claim 1, characterized in that, The pressure side of the pressure claw (23) is arc-shaped.

8. A fire-receiving device, characterized in that, The clamping assembly with emergency unlocking function as described in any one of claims 1 to 7 further includes a striking cylinder (4) built into the protective shell (1) and a wire clamp (6) elastically clamped and fixed by the wire clamp (3) on the protective shell (1), wherein the bolt (64) on the wire clamp (6) corresponds to the striking end position of the striking cylinder (4).

9. A fire-receiving device according to claim 8, characterized in that, The protective shell (1) is provided with a guide fork (11) located on the mounting side of the main line (7). The guide fork (11) and the wire clamp (3) form an upward-opening V-shaped guide channel. The tip of the V-shaped guide channel corresponds to the position of the wire groove (63) on the main line side of the wire clamp (6).

10. A fire-receiving device according to claim 9, characterized in that, The protective shell (1) is also provided with a clamping device (2) located on the mounting side of the sub-line (8). The clamping device (2) includes a clamping claw (23) that rotates with the protective shell (1). The pin (24) is arranged parallel to the axis of the wire groove (63) of the wire clamp (6). The clamping claw (23) is driven to rotate by a power source to clamp the sub-line (8) onto the wire groove (63) on the sub-line side of the wire clamp (6). The movement trajectory of the clamping claw (23) avoids the position of the wire clamp (6).

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