A switchgear cable port cable lifting device and method

Abstract

The application belongs to the technical field of power construction, and particularly relates to a power distribution cabinet cable port cable lifting device and method. The device comprises a mounting body, an additional assembly, a fixed end, a moving end and a linear lifting mechanism. The mounting body forms a cable passing channel penetrating in the up-down direction. The additional assembly is used for detachably fixing the mounting body to the bottom cable port of the power distribution cabinet. The moving end is provided with a lower pressing part and can move up and down under the driving of the linear lifting mechanism. The fixed end is provided with an upper pressing part. In use, the moving end clamps the cable at the cable connection position and moves upward to the handover position. After the fixed end clamps the cable, the moving end is released and returns to the cable connection position. Through the reciprocating clamping, the cable is continuously lifted upward. The scheme can complete the vertical conveying of the cable without the need of the hands of the personnel to be inserted into the bottom cable port of the power distribution cabinet, reduces the operation difficulty in the narrow space and improves the lifting stability.

Description

Technical Field

[0001] This invention belongs to the field of power construction technology, specifically relating to a cable lifting device and method for a distribution cabinet cable port. Background Technology

[0002] During the installation, modification, and maintenance of distribution cabinets, it is usually necessary to guide cables upwards from the cable outlet at the bottom of the cabinet before wiring, securing, and organizing them. Current methods often rely on manual pushing or rope pulling, where personnel below the cabinet push the cable head while personnel inside or above pull the cable through the bottom cable outlet.

[0003] However, the cable ports at the bottom of the distribution cabinet are usually located on the bottom plate or in the mezzanine area of ​​the cabinet. The working space is small, making it difficult for personnel to push, straighten, or pull the cables when they reach near the cable ports. In addition, the outer sheath of the cable is prone to friction and scratching with the metal edge of the cable port, resulting in damage to the cable sheath. At the same time, it is difficult to maintain continuous, stable, and controllable vertical transport by manual pushing and pulling, resulting in low cable transport efficiency, high work intensity, and high risk of working in confined spaces. Summary of the Invention

[0004] The purpose of this invention is to provide a cable lifting device and method for the cable port of a power distribution cabinet, which solves the problems of limited space at the bottom cable port of the power distribution cabinet and difficulty in vertical cable transportation in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, this invention provides a cable lifting device for a distribution cabinet cable port, comprising a mounting body, an attachment component, a fixed end, a movable end, and a linear lifting mechanism. The mounting body has a cable passage extending vertically, which communicates with a cable port at the bottom of the distribution cabinet. The attachment component is disposed outside the mounting body and engages with the cable port at the bottom of the distribution cabinet to detachably fix the mounting body to the cable port. The movable end is movably disposed within the mounting body and has a lower clamping part for clamping a cable entering the cable passage from below the cable port at the bottom of the distribution cabinet at a cable connection position. The fixed end is disposed at the top of the mounting body and has an upper clamping part for clamping the cable after the movable end reaches the connection position. The linear lifting mechanism is disposed within the mounting body and drives the movable end to move vertically between the cable connection position and the connection position. The mobile end clamps the cable through the lower clamping part and is driven upward by the linear lifting mechanism. After the mobile end reaches the handover position, the upper clamping part clamps the cable, the lower clamping part releases the cable, and the mobile end returns to the cable receiving position.

[0006] The above solution uses additional components to directly fix the main installation body to the cable port at the bottom of the distribution cabinet, connecting the cable passage with the original cable port. The cable can enter the moving end without the operator's hand reaching into the cable port. Then, by alternately clamping the moving end and the fixed end, the cable is kept in position by the fixed end during the resetting process of the moving end. This solves the problems of difficulty in manually pushing in narrow cable ports, instability in the lifting process, and easy slippage of the cable, thereby realizing continuous, controlled, and vertical lifting of the cable.

[0007] Furthermore, the mounting components include a positioning part, a radial clamping part, and an axial limiting part. The positioning part is used to insert into the cable port at the bottom of the distribution cabinet, the radial clamping part is used to abut against the hole wall of the cable port at the bottom of the distribution cabinet, and the axial limiting part is used to abut against the bottom plate of the distribution cabinet to restrict the installation body from moving in the vertical direction relative to the cable port at the bottom of the distribution cabinet.

[0008] The above-mentioned further solution achieves the initial alignment of the installation body relative to the cable port through the positioning part, provides locking force in the direction of the hole wall through the radial clamping part, and restricts the vertical movement of the installation body through the axial limiting part. This solves the problem that the lifting device is prone to shaking or falling off after being quickly installed at the existing cable port, thereby improving the stability of the device installation and the reliability of the operation.

[0009] Furthermore, the added components include an outer fixing sleeve and a locking mechanism. The outer fixing sleeve is fitted onto the outside of the mounting body, and the locking mechanism is driven by the outer fixing sleeve. The locking mechanism is used to drive the outer fixing sleeve to expand or contract radially, so that the radial pressing part is pressed against or separated from the hole wall of the cable port at the bottom of the distribution cabinet.

[0010] The above-mentioned further solution uses the locking operation component to drive the outer fixed sheath to deform or displace radially, so that the device can complete locking and disassembly without damaging the original structure of the distribution cabinet. This solves the problem that it is difficult to arrange the fixing components in the reserved holes of the existing distribution cabinet, thereby improving the device's adaptability to different field cable ports and its disassembly and assembly efficiency.

[0011] Furthermore, the linear lifting mechanism includes a track arranged in the vertical direction, and the moving end moves in coordination with the track, so that the moving end moves back and forth along the track between the cable connection position and the handover position.

[0012] The above-mentioned further solution limits the movement direction of the mobile end by using a track, so that the mobile end moves in the vertical direction in a manner similar to the lifting of an elevator. This solves the problem that the mobile end is prone to deviation, shaking or jamming during the lifting of the cable, thereby improving the stability and controllability of the cable lifting path.

[0013] Furthermore, the track includes at least four guide rails spaced circumferentially along the cable passage, with the circumferential angle between two adjacent guide rails being 90 degrees; the moving end moves in coordination with each of the at least four guide rails to limit the swaying of the moving end relative to the installation body during vertical movement.

[0014] The above-mentioned further solution forms a four-way guide support around the cable channel, which constrains the mobile end in both the lateral and longitudinal directions. This solves the problem that single-sided or double-sided guide structures are prone to tilting when holding heavy cables, thereby improving the balance of the mobile end when carrying the cable as it rises and falls.

[0015] Furthermore, the guide rail is a rack and pinion rail, and the moving end is provided with a pinion gear that meshes with the rack and pinion rail; and / or, the guide rail is a groove structure provided on the inner wall of the mounting body, and the moving end is provided with a guide protrusion or guide roller that cooperates with the groove structure.

[0016] In the aforementioned further solution, the rack and pinion mechanism, in conjunction with the pinion, converts the rotational driving force into vertical displacement of the moving end, and the meshing relationship improves the stability of the movement and positioning. The groove structure, in conjunction with the guide protrusion or guide roller, reduces the sway of the moving end and decreases the movement resistance. This further solves the problem of insufficient stability of the moving end in narrow cable-passing channels.

[0017] Furthermore, the linear lifting mechanism includes one of the following: screw lifting mechanism, hydraulic lifting mechanism, pneumatic lifting mechanism, electromagnetic lifting mechanism, or negative pressure adsorption lifting mechanism; the linear lifting mechanism is connected to or driven by the moving end to drive the moving end to move up and down.

[0018] The above-mentioned further solution sets the linear lifting mechanism into multiple replaceable linear drive forms, enabling the lifting device to select the appropriate drive mode according to the on-site power conditions, load requirements, control accuracy and installation space. This solves the problem of insufficient adaptability of a single drive structure to different construction conditions, thereby improving the device's scene adaptability.

[0019] Furthermore, the lower clamping part includes a first telescopic claw, a second telescopic claw, and a lower clamping drive member. The first telescopic claw and the second telescopic claw are disposed opposite to each other at the moving end, and the lower clamping drive member is used to drive the first telescopic claw and the second telescopic claw to move closer to each other or further away from each other. The upper clamping part includes a third telescopic claw, a fourth telescopic claw, and an upper clamping drive member. The third telescopic claw and the fourth telescopic claw are disposed opposite to each other at the fixed end, and the upper clamping drive member is used to drive the third telescopic claw and the fourth telescopic claw to move closer to each other or further away from each other.

[0020] The above-mentioned further solution uses two sets of retractable telescopic claws to achieve clamping at the moving end and holding at the fixed end, respectively. This allows the cable to be clamped by the moving end during the rising phase and by the fixed end during the resetting phase, solving the problem that the cable is prone to falling back with the moving end during continuous lifting, thus realizing alternating clamping continuous conveying.

[0021] Furthermore, the cable lifting device at the cable port of the distribution cabinet also includes a cable detection component, a position detection component, and a control unit. The cable detection component detects whether the cable has entered the cable passage or whether it has contacted the moving end. The position detection component detects the moving distance of the moving end or the distance between the cable head and the top of the mounting body. The control unit is electrically connected to the cable detection component, the position detection component, the linear lifting mechanism, the lower clamping part, and the upper clamping part, respectively. The control unit controls the lower clamping part to clamp the cable after the cable detection component detects the cable, and controls the linear lifting mechanism to drive the moving end to move upward. The control unit also determines the number of round trips of the moving end based on the manually set conveying length and the single moving distance of the moving end, and controls the lower clamping part and the upper clamping part to alternately clamp the cable according to the number of round trips.

[0022] The above-mentioned further solution triggers clamping and lifting actions through cable detection components, provides feedback on the position of the moving end or cable head through position detection components, and determines the number of round trips based on the manually set conveying length through the control unit and controls the alternating actions of the upper and lower clamping parts. This solves the problems of difficulty in manually observing, estimating the conveying distance, and coordinating with the operator throughout the process, thereby improving the automation level of cable lifting, the accuracy of distance control, and the reliability of action connection.

[0023] In a second aspect, the present invention provides a method for lifting cables from a cable port in a distribution cabinet, comprising: detachably fixing an installation body to a cable port at the bottom of the distribution cabinet via an additional component, such that the cable passage of the installation body is connected to the cable port at the bottom of the distribution cabinet; with the operator's hands positioned outside the cable port at the bottom of the distribution cabinet, feeding the cable from below the cable port into the cable passage and allowing the cable to enter the cable receiving range of a moving end; clamping the cable with a lower clamping part disposed on the moving end; driving the moving end upward along the cable passage via a linear lifting mechanism to lift the cable from the receiving position to the handover position; when the moving end reaches the handover position, clamping the cable with an upper clamping part disposed on a fixed end; after the upper clamping part clamps the cable, controlling the lower clamping part to release the cable and controlling the moving end to return to the cable receiving position; repeating the steps of clamping with the lower clamping part, moving the moving end upward, clamping with the upper clamping part, and returning the moving end until the cable is lifted to the target position.

[0024] The above method and the aforementioned device are based on the same inventive concept. By directly installing the lifting device at the bottom of the existing distribution cabinet cable port, and by alternately clamping the moving end and the fixed end to complete the continuous vertical lifting, the cable can be transported without the need for personnel to put their hands into the cable port, thereby reducing the difficulty of working in confined spaces and improving the stability of cable lifting. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a three-dimensional structural diagram of a cable lifting device for a power distribution cabinet cable port according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of a cable lifting device for a power distribution cabinet cable port according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the lifting device after lifting, according to Embodiment 1 of the present invention, of a cable lifting device for a distribution cabinet cable port. Figure 4 This is a structural diagram of an assembly added to a cable lifting device for a power distribution cabinet cable port according to Embodiment 1 of the present invention.

[0026] The components include: 1. Installation body; 2. Addition components; 21. Radial clamping part; 22. Positioning part; 23. Axial limiting part; 3. Fixed end; 4. Moving end; 5. Linear lifting mechanism; 6. Lower clamping part; 7. Upper clamping part. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0029] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. It should be noted in the description of this invention that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Example 1 like Figures 1-3 As shown, a cable lifting device for a distribution cabinet cable port includes an installation body 1, an installation component 2, a fixed end 3, a movable end 4, and a linear lifting mechanism 5.

[0032] The mounting body 1 serves as the supporting foundation for the device and can be cylindrical, frame-shaped, or other structures capable of forming a cable passage. The mounting body 1 forms a cable passage that runs vertically through the device. During use, the cable passage connects to the cable port at the bottom of the distribution cabinet, allowing cables to enter the cable passage from below the cable port and move inwards along the passage. An auxiliary assembly 2 is installed outside the mounting body 1. This assembly engages with the cable port at the bottom of the distribution cabinet, enabling the mounting body 1 to be detachably fixed to the cable port without damaging the existing cabinet structure. A movable end 4 is movably disposed within the mounting body 1, and a lower clamping part 6 is provided on the movable end 4 for clamping the cable. A fixed end 3 is located at the top of the mounting body 1, and an upper clamping part 7 is provided on the fixed end 3 for clamping the cable after the movable end 4 reaches the junction position. A linear lifting mechanism 5 is disposed within the mounting body 1 and drives the movable end 4 to move vertically between the cable connection position and the junction position.

[0033] When the device is in operation, the main installation body 1 is first fixed to the cable port at the bottom of the distribution cabinet via the mounting component 2. The operator only needs to feed the cable into the lower end of the cable passage from the outside of the cable port. After the cable enters the cable receiving range of the moving end 4, the lower clamping part 6 clamps the cable, and the linear lifting mechanism 5 drives the moving end 4 to move upward. After the moving end 4 reaches the handover position, the upper clamping part 7 clamps the cable, the lower clamping part 6 releases the cable, and the moving end 4 returns to the cable receiving position. Because the cable is held by the fixed end 3 when the moving end 4 returns, the cable will not fall with the moving end 4. Through the cyclical execution of this clamping, lifting, handover, release, and reset process, the cable can continuously move upward relative to the cable port at the bottom of the distribution cabinet.

[0034] Compared to traditional manual pushing or rope pulling, this embodiment directly installs the lifting device at the cable outlet at the bottom of the distribution cabinet. This allows the cable to be alternately constrained by the moving end 4 and the fixed end 3 within the cable passage, eliminating the need for personnel to reach into the cable outlet or the cabinet's bottom compartment for straightening and pushing, thus reducing the risks associated with working in confined spaces. Simultaneously, the moving end 4 moves in a controlled manner along the linear lifting mechanism 5, reducing disorderly swaying and friction of the cable relative to the metal edge of the cable outlet, which helps protect the cable's outer sheath.

[0035] In one embodiment, the mounting component 2 includes a positioning part 22, a radial clamping part 21, and an axial limiting part 23. The positioning part 22 is inserted into the cable port at the bottom of the distribution cabinet, initially aligning the mounting body 1 with the cable port in the radial direction. The radial clamping part 21 abuts against the wall of the cable port at the bottom of the distribution cabinet to provide locking force in the horizontal or radial direction. The axial limiting part 23 abuts against the bottom plate of the distribution cabinet to restrict the vertical movement of the mounting body 1 relative to the cable port at the bottom of the distribution cabinet.

[0036] Specifically, the positioning part 22 can be an arc-shaped plate structure located on the outer periphery of the mounting body 1 or on the upper part of the added component 2; the radial pressing part 21 can be a pressing surface, pressing block, or elastic sheath structure that can expand radially; and the axial limiting part 23 can be an annular limiting edge, a limiting step, or a limiting surface that fits against the bottom plate of the distribution cabinet. During installation, the positioning part 22 first enters the cable port at the bottom of the distribution cabinet, then the radial pressing part abuts against the upper part of the bottom plate of the distribution cabinet, and the axial limiting part 23 abuts against the bottom plate of the distribution cabinet, so that the device is not prone to tilting, shaking, or falling off during cable lifting.

[0037] This embodiment achieves rapid installation through the positioning part 22, the radial pressing part 21, and the axial limiting part 23. It can be fixed by utilizing the existing cable ports of the distribution cabinet without having to drill new holes or weld fasteners on the bottom plate of the distribution cabinet, thereby improving on-site installation efficiency and preserving the original structural integrity of the distribution cabinet.

[0038] In one embodiment, the mounting component 2 includes an outer fixing sleeve and a locking mechanism. The outer fixing sleeve is fitted onto the outside of the mounting body 1, and the locking mechanism engages with the outer fixing sleeve. The locking mechanism drives the outer fixing sleeve to expand or contract radially, causing the radially pressing part to press against or separate from the wall of the cable port at the bottom of the distribution cabinet.

[0039] For example, the outer fixing sleeve can be an annular sleeve with elastic deformation capability, and the locking mechanism can be a knob, collar, clamping nut, or other locking mechanism that is easy to operate manually. When the locking mechanism is operated in the locking direction, the outer fixing sleeve expands or contracts radially, causing its outer periphery to abut against the cable port wall; when the locking mechanism is operated in the releasing direction, the outer fixing sleeve releases the compression relationship with the cable port wall, and the device can be removed from the cable port at the bottom of the distribution cabinet. The surface of the outer fixing sleeve that contacts the cable port can also be provided with insulating or flexible material to reduce the hard contact between the device and the cable port.

[0040] This embodiment uses a locking mechanism to radially adjust the outer fixing sleeve, enabling the same lifting device to adapt to cable ports at the bottom of distribution cabinets with different hole diameters within a certain range. This reduces the device's dependence on cable port size and improves its field versatility.

[0041] In one embodiment, the linear lifting mechanism 5 includes a track arranged in the vertical direction, and a movable end 4 moves in conjunction with the track, causing the movable end 4 to reciprocate between a cable connection position and a junction position along the track. The track can be installed on the inner wall of the mounting body 1 or on a support frame surrounding the cable passage. The movable end 4 can engage with the track via a slider, roller, gear, or guide protrusion.

[0042] Specifically, the movement of the mobile end 4 along the track is similar to the lifting and lowering of an elevator car in a guide rail. The track is used to limit the movement of the mobile end 4 to the vertical direction of the mounting body 1, preventing lateral deviation of the mobile end 4 when clamping the cable. The linear lifting mechanism 5 may include a drive component for providing power, or it may cooperate with an external drive component, as long as it can drive the mobile end 4 to move vertically along the track.

[0043] In this embodiment, the moving end 4 is constrained by the track, so that the moving end 4 has a stable linear motion path when it drives the cable to be lifted, reducing the possibility of the cable swinging or colliding with the edge of the cable opening in the cable passage, thereby improving the smoothness of the cable lifting process.

[0044] In one embodiment, the track includes at least four guide rails spaced circumferentially along the cable passage, with the circumferential angle between any two adjacent guide rails being 90 degrees. The movable end 4 is movablely engaged with each of the at least four guide rails to limit the swaying of the movable end 4 relative to the mounting body 1 during vertical movement.

[0045] Furthermore, the four guide rails can be respectively set in the front, back, left, and right directions of the inner wall of the mounting body 1, or in two directions that are 90 degrees apart, namely the transverse and longitudinal directions. Multiple mating parts can be correspondingly set on the outer periphery of the moving end 4, and these mating parts respectively mate with each guide rail. When the cable is heavy or the cable entry direction is slightly off, the four-way guide structure can share the lateral force, allowing the moving end 4 to maintain its upward and downward movement along the center direction of the cable passage.

[0046] This embodiment forms multi-point support by circumferentially spaced at least four guide rails, which can better limit the torsion and tilt of the moving end 4 compared with single-sided or double-sided rails, and improve the motion stability when lifting heavy-load cables.

[0047] In one embodiment, the guide rail is a rack and pinion track, and the moving end 4 is provided with a pinion gear that meshes with the rack and pinion track. The pinion gear can be driven by a drive component on the moving end 4, or it can be connected to a drive component in the mounting body 1 through a transmission mechanism. When the pinion gear rotates, it rolls or climbs along the rack and pinion track, thereby driving the moving end 4 to move in the up and down direction.

[0048] In another embodiment, the guide rail is a groove structure disposed on the inner wall of the mounting body 1, and the moving end 4 is provided with a guide protrusion or guide roller that cooperates with the groove structure. The guide protrusion or guide roller is embedded in the groove structure, so that the moving end 4 slides or rolls in the up-down direction under the constraint of the groove structure. The groove structure can reduce the risk of the moving end 4 derailing, and the guide roller can reduce the resistance to movement.

[0049] This embodiment achieves stable transmission through the cooperation of rack and pinion, or achieves limiting guidance through the cooperation of groove structure with guide protrusion and guide roller. It can select an appropriate structure according to different processing conditions and load requirements, thereby improving the implementation flexibility of the linear lifting mechanism 5.

[0050] In one embodiment, the linear lifting mechanism 5 includes one of a screw lifting mechanism, a hydraulic lifting mechanism, a pneumatic lifting mechanism, an electromagnetic lifting mechanism, or a negative pressure adsorption lifting mechanism. The linear lifting mechanism 5 is connected to or driven by the moving end 4 to drive the moving end 4 to move up and down.

[0051] For example, when the linear lifting mechanism 5 is a screw lifting mechanism, the screw lifting mechanism may include a screw arranged in the vertical direction and a nut seat that is threadedly engaged with the screw. The nut seat is connected to the movable end 4, and the screw rotation drives the movable end 4 to rise and fall. When the linear lifting mechanism 5 is a hydraulic lifting mechanism, the extension end of the hydraulic cylinder can be connected to the movable end 4, and the extension or retraction of the hydraulic cylinder drives the movable end 4 to move. When the linear lifting mechanism 5 is a pneumatic lifting mechanism, the extension end of the pneumatic cylinder can be connected to the movable end 4. When the linear lifting mechanism 5 is an electromagnetic lifting mechanism, the movable end 4 can be moved by generating linear displacement or attraction action through an electromagnetic drive. When the linear lifting mechanism 5 is a negative pressure adsorption lifting mechanism, the lifting action of the movable end 4 or its clamping part can be achieved by using negative pressure in conjunction with a guide structure.

[0052] This embodiment provides a variety of alternative linear drive structures, enabling the lifting device to adapt to different distribution cabinet site conditions. For example, a screw lifting mechanism can be used when higher position control accuracy is required; a hydraulic lifting mechanism can be used when a larger lifting force is required; and a pneumatic or electromagnetic structure can be used when lightweight or rapid action is required, thereby improving the device's adaptability to different operating conditions.

[0053] In one embodiment, the lower clamping part 6 includes a first telescopic claw, a second telescopic claw, and a lower clamping drive. The first and second telescopic claws are disposed opposite to each other on the moving end 4, and the lower clamping drive is used to drive the first and second telescopic claws to move closer to or further apart from each other. The upper clamping part 7 includes a third telescopic claw, a fourth telescopic claw, and an upper clamping drive. The third and fourth telescopic claws are disposed opposite to each other on the fixed end 3, and the upper clamping drive is used to drive the third and fourth telescopic claws to move closer to or further apart from each other.

[0054] Specifically, the lower clamping part 6 and the upper clamping part 7 can adopt an electric clamping structure. In the open state, the electric clamping part allows the cable to enter the clamping range; in the closed state, it wraps around the cable's outer circumference and clamps the cable. The first and second telescopic claws can form arc-shaped clamping surfaces, as can the third and fourth telescopic claws, to accommodate circular or near-circular cable sheaths. The lower and upper clamping drive components can be electromagnetic drive components, motor drive components, miniature lead screw drive components, or other actuators capable of driving the opening and closing of the telescopic claws.

[0055] Furthermore, a flexible protective layer can be provided on the clamping surfaces of the lower clamping part 6 and the upper clamping part 7. The flexible protective layer can be a rubber pad, an elastic liner, or other flexible insulating material, used to increase friction and reduce the risk of localized pressure damage to the cable's outer sheath when clamping the cable.

[0056] In this embodiment, the lower clamping part 6 of the moving end 4 and the upper clamping part 7 of the fixed end 3 alternately clamp the cable, so that the cable is in a controlled state during both the lifting and resetting stages; the flexible protective layer can reduce damage to the outer sheath of the cable while ensuring the clamping force, thereby improving the safety of cable transportation.

[0057] In one embodiment, the cable lifting device at the cable port of the distribution cabinet further includes a cable detection component, a position detection component, and a control unit. The cable detection component detects whether the cable has entered the cable passage or contacted the moving end 4. The position detection component detects the distance traveled by the moving end 4, or the distance between the cable head and the top of the mounting body 1. The control unit is electrically connected to the cable detection component, the position detection component, the linear lifting mechanism 5, the lower clamping part 6, and the upper clamping part 7, respectively.

[0058] Specifically, the cable detection component can be installed at the lower part of the mounting body 1 or at the moving end 4, and is used to generate a detection signal when the cable head enters the cable threading channel or contacts the moving end 4. After receiving the detection signal, the control unit controls the lower clamping part 6 to clamp the cable and controls the linear lifting mechanism 5 to drive the moving end 4 upward. The position detection component can detect the displacement of the moving end 4 along the track, the state of the moving end 4 reaching the handover position, or the distance between the cable head and the top of the mounting body 1, and feed back position data to the control unit. Based on the position data, the control unit controls the linear lifting mechanism 5 to stop, decelerate, or perform the handover action.

[0059] Furthermore, the control unit can receive a manually set conveying length and obtain the single-movement distance of the moving end 4. Based on the manually set conveying length and the single-movement distance of the moving end 4, the control unit determines the number of round trips of the moving end 4, and controls the lower clamping part 6 and the upper clamping part 7 to alternately clamp the cable according to this number of round trips. For example, when the single-movement distance is a preset distance, the control unit can accumulate one lifting distance after each upward stroke of the moving end 4, until the accumulated lifting distance reaches the manually set conveying length.

[0060] During the handover control process, the control unit can first control the upper clamping part 7 to clamp the cable after the moving end 4 reaches the handover position, and then control the lower clamping part 6 to release the cable; when the upper clamping part 7 has not completed clamping, the control unit can maintain the clamping state of the lower clamping part 6 and restrict the moving end 4 from returning to the cable receiving position. This can prevent the cable from losing clamping constraint and sliding down during the handover process.

[0061] This embodiment uses a cable detection component to trigger cable contact, a position detection component to provide feedback on the moving distance or cable head position, and a control unit to calculate the conveying length and coordinate the actions of the upper and lower clamping parts 7 and the lower clamping part 6. This enables the cable lifting process to have automatic start, precise start and stop, and handover interlocking capabilities, reducing the difficulty of manual command and coordination.

[0062] Example 2 A method for lifting cables from a distribution cabinet cable port is provided, employing the cable lifting device for the distribution cabinet cable port in any of the aforementioned embodiments. In use, the mounting body 1 is detachably fixed to the cable port at the bottom of the distribution cabinet via the mounting component 2, thereby connecting the cable passage of the mounting body 1 to the cable port at the bottom of the distribution cabinet. Since this installation method utilizes the existing cable port for fixing, the connection between the mounting component 2 and the cable port at the bottom of the distribution cabinet can be released after the operation is completed, and the lifting device can be removed from the cable port at the bottom of the distribution cabinet.

[0063] After the main body 1 is fixed, the operator, with their hands positioned outside the cable opening at the bottom of the distribution cabinet, feeds the cable into the cable threading channel from below the cable opening, allowing the cable to enter the cable receiving range of the moving end 4. Subsequently, the cable is clamped by the lower clamping part 6 located on the moving end 4. After the lower clamping part 6 clamps the cable, the linear lifting mechanism 5 drives the moving end 4 to move upward along the cable threading channel, raising the cable from the receiving position to the handover position.

[0064] When the mobile end 4 reaches the handover position, it clamps the cable via the upper clamping part 7 located on the fixed end 3. After the upper clamping part 7 clamps the cable, the lower clamping part 6 releases the cable, and the mobile end 4 returns to the cable receiving position. Subsequently, the mobile end 4 clamps the next section of cable again via the lower clamping part 6, and repeats the rising, handover, release, and return actions until the cable is raised to the target position.

[0065] Using the above method, the cable lifting process does not rely on personnel continuously pushing or straightening the cable in a narrow space, nor does it require personnel to reach their hands into the cable opening at the bottom of the distribution cabinet. The alternating clamping of the moving end 4 and the fixed end 3 keeps the cable in a stable position during continuous lifting, and the linear lifting mechanism 5 allows the cable to rise in a controlled manner along the cable passage, thus solving the problem of difficult vertical cable transport in confined spaces.

[0066] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A cable lifting device for a distribution cabinet cable port, characterized in that, It includes the main body (1), the mounting components (2), the fixed end (3), the moving end (4), and the linear lifting mechanism (5); The mounting body (1) has a cable passage that runs through the vertical direction, and the cable passage is used to connect with the cable port at the bottom of the distribution cabinet. The mounting component (2) is disposed outside the mounting body (1) and is used to cooperate with the cable port at the bottom of the power distribution cabinet to detachably fix the mounting body (1) to the cable port at the bottom of the power distribution cabinet; The movable end (4) is movably disposed within the installation body (1). The movable end (4) is provided with a lower clamping part (6). The lower clamping part (6) is used to clamp the cable entering the cable passage from below the cable port at the bottom of the distribution cabinet at the cable connection position. The fixed end (3) is located on the top of the mounting body (1), and the fixed end (3) is provided with an upper clamping part (7). The upper clamping part (7) is used to clamp the cable after the moving end (4) reaches the junction position. The linear lifting mechanism (5) is located inside the installation body (1) and is used to drive the moving end (4) to move up and down between the cable connection position and the handover position; After the moving end (4) clamps the cable through the lower clamping part (6), it is driven to move upward by the linear lifting mechanism (5). After the moving end (4) reaches the handover position, the upper clamping part (7) clamps the cable, the lower clamping part (6) releases the cable, and the moving end (4) returns to the cable connection position.

2. The cable lifting device for the cable outlet of the distribution cabinet according to claim 1, characterized in that, The mounting component (2) includes a positioning part (22), a radial pressing part (21), and an axial limiting part (23). The positioning part (22) is used to insert into the bottom cable port of the distribution cabinet. The radial pressing part (21) is used to abut against the hole wall of the bottom cable port of the distribution cabinet. The axial limiting part (23) is used to abut against the bottom plate of the distribution cabinet to restrict the mounting body (1) from moving in the vertical direction relative to the bottom cable port of the distribution cabinet.

3. The cable lifting device for the cable outlet of the distribution cabinet according to claim 2, characterized in that, The mounting component (2) includes an outer fixing sleeve and a locking operation component. The outer fixing sleeve is fitted on the outside of the mounting body (1), and the locking operation component is in transmission cooperation with the outer fixing sleeve. The locking mechanism is used to drive the outer fixing sleeve to expand or contract radially, so that the radial pressing part is pressed against or separated from the hole wall of the cable port at the bottom of the distribution cabinet.

4. The cable lifting device for the cable outlet of the distribution cabinet according to claim 1, characterized in that, The linear lifting mechanism (5) includes a track arranged in the vertical direction, and the moving end (4) moves in coordination with the track, so that the moving end (4) moves back and forth along the track between the cable receiving position and the handover position.

5. The cable lifting device for the cable outlet of the distribution cabinet according to claim 4, characterized in that, The track includes at least four guide rails spaced circumferentially along the cable passage, wherein the circumferential angle between two adjacent guide rails is 90 degrees. The mobile end (4) is respectively engaged with at least four of the guide rails to limit the swaying of the mobile end (4) relative to the mounting body (1) during the up and down movement.

6. The cable lifting device for the cable outlet of the distribution cabinet according to claim 5, characterized in that, The guide rail is a rack and pinion rail, and the moving end (4) is provided with a pinion gear that meshes with the rack and pinion rail; And / or, the guide rail is a groove structure set in the inner wall of the mounting body (1), and the moving end (4) is provided with a guide protrusion or guide roller that cooperates with the groove structure.

7. The cable lifting device for the cable outlet of the distribution cabinet according to claim 1, characterized in that, The linear lifting mechanism (5) includes one of the following: screw lifting mechanism, hydraulic lifting mechanism, pneumatic lifting mechanism, electromagnetic lifting mechanism or negative pressure adsorption lifting mechanism; The linear lifting mechanism (5) is connected or driven by the moving end (4) to drive the moving end (4) to move up and down.

8. The cable lifting device for the cable outlet of the distribution cabinet according to claim 1, characterized in that, The lower pressing part (6) includes a first telescopic claw, a second telescopic claw, and a lower pressing drive member. The first telescopic claw and the second telescopic claw are disposed opposite to each other on the moving end (4). The lower pressing drive member is used to drive the first telescopic claw and the second telescopic claw to move closer to each other or further away from each other. The upper pressing part (7) includes a third telescopic claw, a fourth telescopic claw, and an upper pressing drive member. The third telescopic claw and the fourth telescopic claw are disposed opposite to each other on the fixed end (3). The upper pressing drive member is used to drive the third telescopic claw and the fourth telescopic claw to move closer to each other or further away from each other.

9. The cable lifting device for the cable outlet of the distribution cabinet according to claim 1, characterized in that, The cable lifting device at the cable port of the distribution cabinet also includes a cable detection component, a position detection component and a control unit. The cable detection component is used to detect whether the cable enters the cable passage or whether it contacts the moving end (4). The position detection component is used to detect the moving distance of the moving end (4) or the distance between the head of the cable and the top of the mounting body (1). The control unit is electrically connected to the cable detection component, the position detection component, the linear lifting mechanism (5), the lower clamping part (6), and the upper clamping part (7), respectively. The control unit is used to control the lower clamping part (6) to clamp the cable after the cable detection component detects the cable, and to control the linear lifting mechanism (5) to drive the moving end (4) to move upward. The control unit is also used to determine the number of round trips of the mobile end (4) based on the manually set conveying length and the single movement distance of the mobile end (4), and to control the lower clamping part (6) and the upper clamping part (7) to alternately clamp the cable according to the number of round trips.

10. A method for lifting cables at the cable outlet of a power distribution cabinet, characterized in that, The cable lifting device for the cable outlet of the distribution cabinet as described in any one of claims 1-9 includes the following specific steps: The mounting body (1) is detachably fixed to the bottom cable port of the distribution cabinet by means of the mounting component (2), so that the cable passage of the mounting body (1) is connected to the bottom cable port of the distribution cabinet; With the operator's hands positioned outside the cable port at the bottom of the distribution cabinet, the cable is fed into the cable passage from below the cable port at the bottom of the distribution cabinet, and the cable is brought into the cable connection range of the mobile end (4). The cable is clamped by the lower clamping part (6) provided on the moving end (4); The linear lifting mechanism (5) drives the moving end (4) to move upward along the cable passage to lift the cable from the connection position to the handover position; When the mobile end (4) reaches the handover position, the cable is clamped by the upper clamping part (7) provided on the fixed end (3); After the upper clamping part (7) clamps the cable, the lower clamping part (6) is controlled to release the cable, and the moving end (4) is controlled to return to the cable connection position; Repeat the steps of clamping with the lower clamping part (6), moving the moving end (4) upward, clamping with the upper clamping part (7), and returning the moving end (4) until the cable is lifted to the target position.

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