Portable automatic lifter and load hanging device

Abstract

The invention discloses a portable automatic lifter and a load hanging device, and belongs to the technical field of load hanging, the portable automatic lifter comprises a case, a first traction disc, a second traction disc and a first driving piece, the second traction disc and the first traction disc can be arranged on the case in a synchronous rotation mode, the first traction disc is provided with a first conical surface, and the second traction disc is provided with a second conical surface; the second traction disc has a second conical surface; a traction groove extending in the circumferential direction is defined between the first conical surface and the second conical surface, a plurality of first clamping teeth are evenly arranged on the first conical surface in the circumferential direction, a plurality of second clamping teeth are evenly arranged on the second conical surface in the circumferential direction, and the first clamping teeth and the second clamping teeth are arranged in a staggered mode. The rope can be contained in the traction groove and meshed with the first clamping teeth and the second clamping teeth at the same time. The robot can adapt to and drive various ropes with different types and diameters to carry out continuous conveying operation, so that the requirement for multi-task rapid switching in complex high-altitude and limited space operation is met, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of load-bearing technology, and in particular to a portable automatic lifter and load-bearing device. Background Technology

[0002] When load-bearing devices are applied to complex high-altitude operations, confined space intervention, and emergency rescue, such as high-rise building maintenance, wind turbine overhaul, bridge cable construction, material transportation in mountain valleys, and rapid repair of industrial equipment, operators generally face a common challenge: under constraints such as limited access paths, unsatisfactory ground support conditions, and tight operation time windows, it is necessary to install hoisting rope lifts to quickly construct a reliable and controllable vertical or inclined power transmission channel.

[0003] Traditionally, constructing such vertical passageways relies on large aerial platforms, heavy winches, or stationary hoists. However, these large pieces of equipment are not very mobile, have long deployment cycles, and are subject to harsh working environment requirements, making them unsuitable for the narrow corridors, irregular facades, rugged terrain, or temporary work platforms commonly found in the aforementioned scenarios.

[0004] To improve mobility, various lightweight and portable rope-driven devices have emerged on the market. However, a single task often involves multiple stages. For example, it may be necessary to first use a flexible, high-strength rescue rope to safely lift personnel, then switch to a wear-resistant flat sling to transport heavy tools, and finally use a standard steel wire rope for sustained material transport. Existing portable lifting devices are typically optimized for specific rope diameters and types, with fixed clamping mechanisms. Forcibly mixing different ropes may result in insufficient clamping force on thin, soft ropes, posing a risk of stalling and slippage; while thick, stiff ropes may be difficult to accommodate or subject to excessive compression, easily damaging the rope core structure and creating undetectable safety hazards. This pickiness regarding ropes necessitates the deployment of multiple devices on-site or frequent component replacements, thus not only reducing the efficiency of individual machine deployment but also significantly slowing down the progress of the task. Summary of the Invention

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a portable automatic lifting device that can safely and efficiently adapt to and drive various types and diameters of ropes for continuous conveying operations, thereby meeting the needs of rapid switching between multiple tasks in complex high-altitude and confined space operations and improving work efficiency.

[0006] The present invention also proposes a load-bearing suspension device.

[0007] According to a first aspect of the present invention, a portable automatic lifting device includes: a housing; a first traction disc rotatably mounted on the housing, the first traction disc having a first conical surface; a second traction disc rotatably mounted on the housing, the second traction disc being coaxially arranged with the first traction disc, the second traction disc having a second conical surface; the first and second conical surfaces being arranged facing each other, a circumferentially extending traction groove being defined between the first and second conical surfaces, a plurality of first clamping teeth extending radially are uniformly arranged circumferentially on the first conical surface, a plurality of second clamping teeth extending radially are uniformly arranged circumferentially on the second conical surface, the plurality of first clamping teeth and the plurality of second clamping teeth being arranged alternately; a first driving member fixedly mounted inside the housing, the first driving member being drively connected to the first traction disc and the second traction disc, the first driving member being capable of driving the first and second traction discs to rotate synchronously to pull a rope clamped in the traction groove.

[0008] The system has at least the following beneficial effects: The first traction disc is driven by a first driving member and rotatably supported on a housing. A first conical surface is provided at the end of the first traction disc away from the housing. A second traction disc is coaxially disposed on the side of the first traction disc away from the housing. It is connected to the first driving member and can rotate synchronously with the first traction disc. A second conical surface is provided at the end of the second traction disc facing the first traction disc. The constricted sections of the first and second conical surfaces face each other, defining a circumferentially extending annular space with a V-shaped cross-section, which is used to accommodate the rope. Multiple first clamping teeth extending radially are evenly distributed along the circumference of the first conical surface. Similarly, multiple second clamping teeth extending radially are also evenly distributed along the circumference of the second conical surface. The multiple first clamping teeth and multiple second clamping teeth are staggered in the circumferential direction; that is, from an axial perspective, the projection of any first clamping tooth in the circumferential direction is located between two adjacent second clamping teeth, and vice versa. When the rope is placed in the traction groove, its cylindrical surface simultaneously presses against the sidewalls of the staggered first and second clamping teeth. This activates the first driving component, causing the first and second traction discs to rotate synchronously. By converting the rotational torque into circumferential frictional force acting on the rope, smooth traction and transport of the rope is achieved. The technical solution of this invention, through its staggered meshing structure, multiplies the effective force points circumferentially on the rope. The load generated during rope traction is converted into radial pressure, forcing the clamping teeth to embed deeper into the rope surface. Therefore, when dealing with ropes of different diameters, the radially tapering traction groove can achieve adaptive adaptation, fully enveloping thin ropes and partially engaging thick ropes. This ensures anti-slip grip on thin ropes while avoiding excessive compression damage to thick ropes, achieving wide compatibility from thin, soft rescue ropes to thick, stiff lifting slings, improving the safety and applicability of traction operations.

[0009] According to some embodiments of the invention, a rope guard is also included, which is wrapped around the outside of the traction groove and configured to prevent the rope from slipping out of the traction groove.

[0010] According to some embodiments of the present invention, the rope protector includes: a first connecting portion detachably mounted on a housing; a rope cover, one end of which is rotatably connected to the housing and the other end of which is rotatably connected to the first connecting portion, wherein at least a portion of the curvature of the rope cover is adapted to the contour of the first traction disc, and the rope cover covers the outer edge of the first traction disc and the outer edge of the second traction disc to enclose the opening of the traction groove.

[0011] According to some embodiments of the present invention, a rope separator is also included, which is fixedly mounted on the housing and located below the first traction disc. The rope separator extends at least partially into the traction groove and is configured to separate the input and output sections of the rope.

[0012] According to some embodiments of the present invention, the rope separator includes a guide block, on which a first guide arc surface and a second guide arc surface are provided. The first guide arc surface is located at one end of the guide block near the output side of the traction groove rope and is recessed in a direction away from the output side of the traction groove rope. The second guide arc surface is located at one end of the guide block near the input side of the traction groove rope and is recessed in a direction away from the input side of the traction groove rope.

[0013] According to some embodiments of the present invention, the rope separator further includes a guide plate, which extends upward from the upper edge of the guide block and is inserted into the traction groove. A guide slope is provided at one end of the guide plate near the second guide arc surface. The guide slope is smoothly connected to the second guide arc surface and extends upward inclined into the traction groove.

[0014] According to some embodiments of the present invention, a limiting member is also included. The limiting member is fixedly disposed on the housing and located on one side of the rope splitter. The limiting member has a bundle hole that corresponds to the input end and the output end of the rope splitter. The size of the bundle hole is sufficient to allow the input segment and the output segment of the rope to pass through simultaneously. The limiting member is configured to simultaneously constrain the input segment and the output segment of the rope to limit the swing amplitude of the rope.

[0015] According to some embodiments of the present invention, the end of the first guide arc surface away from the first traction disc is coplanar with the end of the second guide arc surface away from the first traction disc. The depth of the second guide arc surface along the axis of the first traction disc is less than the depth of the first guide arc surface. The width of the bundle hole gradually increases from the second guide arc surface toward the first guide arc surface. The second guide arc surface can guide the input section of the rope to the central engagement area of ​​the traction groove.

[0016] According to some embodiments of the invention, an auxiliary pulley is also included, which is rotatably mounted on the housing and located on the input side of the rope distributor. The axis of the auxiliary pulley is parallel to the axis of the first traction disc. The auxiliary pulley is configured to isolate lateral disturbances from an external rope source before the rope enters the traction groove, so that the rope is introduced at a constant angle.

[0017] According to some embodiments of the present invention, a first traction disc is connected to a first driving member via a splined shaft, a second traction disc is mounted on the splined shaft, the second traction disc is slidable along the axial direction of the splined shaft, a fixed disc is fixedly provided at the end of the splined shaft away from the first traction disc, a first elastic member is provided between the fixed disc and the second traction disc, the first elastic member is configured to press the second traction disc against the first traction disc.

[0018] According to some embodiments of the present invention, a clutch mechanism is also included, which is disposed on the chassis and connected to the second traction disc. The clutch mechanism is configured to drive the second traction disc closer to or away from the first traction disc.

[0019] According to some embodiments of the present invention, the clutch mechanism includes: a connecting sleeve rotatably disposed within a housing, the connecting sleeve being sleeved on a splined shaft, the connecting sleeve engaging with the splined shaft via an internal spline; a locking sleeve fixedly disposed on the housing, the locking sleeve being sleeved on the outside of the connecting sleeve, the locking sleeve being connected to the connecting sleeve via a bearing; and a second driving member disposed on the locking sleeve, the second driving member being drively connected to the splined shaft, the second driving member being configured to drive the splined shaft to move axially thereon, thereby causing a second traction disc to approach or move away from a first traction disc.

[0020] According to some embodiments of the present invention, a triggering mechanism is further included, which is drively connected to the clutch mechanism and is configured to drive the clutch mechanism to operate according to changes in rope tension.

[0021] According to some embodiments of the present invention, the triggering mechanism includes: an L-shaped guide groove formed on the wall of the locking sleeve; a triggering lever, one end of which is fixedly connected to the connecting cylinder, and the other end passing through the L-shaped guide groove and fixedly connected to an auxiliary pulley, the auxiliary pulley being able to swing relative to the housing; a second elastic member connected between the triggering lever and the housing, the second elastic member being configured to drive the triggering lever to move the auxiliary pulley closer to the rope; wherein, when the rope is unloaded, the second elastic member holds the triggering lever in the locked position of the L-shaped guide groove; when the rope is loaded, the rope tension drives the auxiliary pulley to swing, thereby driving the triggering lever to disengage from the locked position of the L-shaped guide groove and move to the release position, the movement of the triggering lever triggers the action of the second driving member, driving the second traction disc to approach the first traction disc, thereby clamping the rope in the traction groove.

[0022] According to a second aspect of the present invention, a load-bearing device includes a portable automatic lifter as described in the first aspect of the present invention and a hanger, wherein the housing is connected to the hanger and the hanger is configured to fix the housing to an external support structure or load.

[0023] It has at least the following beneficial effects: This load-bearing device has all the beneficial effects of the aforementioned portable automatic lift, which will not be repeated here.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the portable automatic lifting device according to a specific embodiment; Figure 2 for Figure 1 A structural diagram of the hidden section of the chassis; Figure 3 for Figure 2 Schematic diagram of the structure of the first and second traction discs; Figure 4 for Figure 2 A schematic diagram of the structure of the first traction disc and rope separator; Figure 5 for Figure 4 A schematic diagram of the center rope splitter; Figure 6 for Figure 1 Schematic diagram of the middle limiting component and the rope separator; Figure 7 This is a schematic diagram of the structure of the first traction disc, the second traction disc, and the fixed disc of the portable automatic lifting device in this specific embodiment; Figure 8 This is a schematic diagram of the clutch mechanism in the portable automatic lifter of this specific embodiment; Figure 9 for Figure 8 The right view of the cross section.

[0026] Figure label: Chassis 1; First traction disc 2, first conical surface 21, splined shaft 22; Second traction disc 3, second conical surface 31, fixed disc 32, first elastic element 321; Traction groove 4, first clamping tooth 41, second clamping tooth 42; Rope protector 5, first connecting part 51, rope cover 52; Rope separator 6, guide block 61, first guide arc surface 611, second guide arc surface 612, track divider 62, guide slope 621; Limiting component 7, bundle hole 71; Auxiliary pulley 8; Clutch mechanism 9, connecting cylinder 91, locking sleeve 92, second driving component 93; Triggering mechanism 10, L-shaped guide groove 101, triggering lever 102. Detailed Implementation

[0027] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, front, back, etc., are 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 limiting this invention.

[0028] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, and "above," "below," "within," etc. are understood to include the stated number. If "first," "second," etc. are used in the description, they are only configured to distinguish technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0029] In the description of this invention, unless otherwise explicitly defined, terms such as "set", "install", and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0030] Please refer to Figures 1 to 8This embodiment discloses a portable automatic lifting device, including a housing 1, a first traction disc 2, a second traction disc 3, and a first driving component. The first traction disc 2 is rotatably mounted on the housing 1 and has a first conical surface 21. The second traction disc 3 is coaxially arranged with the first traction disc 2 and can rotate synchronously with it. The second traction disc 3 has a second conical surface 31. The first conical surface 21 and the second conical surface 31 are arranged facing each other, and a circumferentially extending traction groove is defined between the first conical surface 21 and the second conical surface 31. 4. A plurality of first clamping teeth 41 extending radially are uniformly arranged along the circumference of the first conical surface 21, and a plurality of second clamping teeth 42 extending radially are uniformly arranged along the circumference of the second conical surface 31. The plurality of first clamping teeth 41 and the plurality of second clamping teeth 42 are arranged alternately. The first driving member is fixedly installed in the housing 1. The first driving member is connected to the first traction disc 2 and the second traction disc 3. The first driving member can drive the first traction disc 2 and the second traction disc 3 to rotate synchronously to pull the rope clamped in the traction groove 4.

[0031] like Figures 1 to 3As shown, the first traction disc 2 is driven by the first drive member and rotatably supported on the housing 1. A first conical surface 21 is provided at the end of the first traction disc 2 away from the housing 1. The second traction disc 3 is coaxially disposed on the side of the first traction disc 2 away from the housing 1. It is connected to the first drive member and can rotate synchronously with the first traction disc 2. A second conical surface 31 is provided at the end of the second traction disc 3 facing the first traction disc 2. The constricted sections of the first conical surface 21 and the second conical surface 31 face each other, together defining a circumferentially extending annular space with a V-shaped cross-section. This annular space is used to accommodate the rope. Multiple first clamping teeth 41 extending radially are evenly distributed along the circumference of the first conical surface 21. Similarly, multiple second clamping teeth 42 extending radially are evenly distributed along the circumference of the second conical surface 31. The multiple first clamping teeth 41 and multiple second clamping teeth 42 are staggered in the circumferential direction. That is, from the axial perspective, the projection of any first clamping tooth 41 in the circumferential direction is located between two adjacent second clamping teeth 42, and vice versa. When the rope is placed in the traction groove 4, its cylindrical surface is simultaneously pressed against the sidewalls of the staggered first clamping teeth 41 and second clamping teeth 42. The first driving member is activated to drive the first traction disc 2 and the second traction disc 3 to rotate synchronously. By converting the rotational torque into a circumferential frictional force acting on the rope, the rope is smoothly tractioned and transported. The technical solution of this invention, through its interlocking meshing structure, multiplies the effective force points in the circumference of the rope. During rope traction, the load generated is converted into radial pressure, forcing the clamping teeth to embed deeper into the rope surface. Therefore, when dealing with ropes of different diameters, the radially tapering traction groove 4 can achieve adaptive adaptation, that is, fully enveloping thin ropes and partially biting thick ropes. This ensures both the anti-slip grip of thin ropes and avoids excessive compression damage to thick ropes, achieving wide compatibility from thin and soft rescue ropes to thick and stiff lifting slings, thus improving the safety and applicability of traction operations.

[0032] To achieve precise traction control, a high-power-density brushless DC servo motor is preferentially selected as the first drive component. Its output shaft is connected to the main drive shaft of the first traction disc 2 through a set of planetary gear reducers. Of course, in addition to the above preferred solution, depending on different application scenarios and cost considerations, the first drive component can also be replaced with a brushed DC motor, a stepper motor, or a hydraulic motor. The corresponding transmission components can be adapted to worm gear reducers, harmonic reducers, or synchronous belt drive mechanisms. The above structures are all mature technical means that can be conventionally selected and replaced by those skilled in the art based on specific performance indicators, and their principles will not be further elaborated.

[0033] In some specific embodiments of the present invention, a rope protector 5 is also included, which is wrapped around the outside of the traction groove 4 and is configured to prevent the rope from coming out of the traction groove 4.

[0034] It should be noted that the second traction disc 3 defined in this invention is essentially an open annular space extending circumferentially and with a V-shaped or wedge-shaped cross-section, formed by the first conical surface 21 and the second conical surface 31 facing each other. Under dynamic operating conditions of the traction disc rotation, especially when the rope tension momentarily slackens, experiences severe vibration, or is subjected to unexpected lateral impact, the rope may radially disengage from the traction groove 4. For example... Figure 1 As shown, the rope guard 5 is arranged across the outer edges of the first traction disc 2 and the second traction disc 3, forming a protective structure around the opening of the second traction disc 3. It can physically shield and restrain the rope housed in the second traction disc 3 in the radial direction, thereby effectively preventing the rope from accidentally coming out radially from the second traction disc 3 due to rope vibration, slackness or external interference during operation, ensuring the continuity and safety of traction operation.

[0035] In some specific embodiments of the present invention, the rope protector 5 includes: a first connecting part 51, which is detachably mounted on the housing 1; a rope cover 52, one end of which is rotatably connected to the housing 1 and the other end of which is rotatably connected to the first connecting part 51, wherein at least part of the curvature of the rope cover 52 is adapted to the contour of the first traction disc 2, and the rope cover 52 covers the outer edge of the first traction disc 2 and the outer edge of the second traction disc 3 to enclose the opening of the traction groove 4.

[0036] like Figure 1 As shown, the lower end of the first connecting part 51 is detachably mounted to the housing 1 via a quick-release buckle structure and is located on the right side below the first traction disc 2. The rope guard 52 is at least partially an arc-shaped sheet structure adapted to the curvature of the outer edges of the first traction disc 2 and the second traction disc 3. One end of the rope guard is pivotally connected to the housing 1 via a hinge and is located on the left side below the first traction disc 2, while the other end is hinged to the upper end of the first connecting part 51. When it is necessary to install or replace the rope, the operator first releases the quick-release buckle at the lower end of the first connecting part 51 to separate it from the housing 1; then, the operator holds the first connecting part 51 or the rope guard 52 and rotates it counterclockwise until the rope guard 52 is completely opened, fully exposing the second traction disc 3 below. At this time, the operator can unimpededly wind the rope and place it inside the second traction disc 3 between the first traction disc 2 and the second traction disc 3. After the rope is threaded, rotate the rope guard 52 in the opposite direction so that it covers the radial outer edge of the second traction disc 3 again. Finally, fasten the quick-release buckle at the lower end of the first connecting part 51 with the corresponding interface on the housing 1 to lock it in place, thus quickly restoring the closed protective state. In the working state, after the rope guard 52 is closed and locked, it covers the outer edges of the first traction disc 2 and the second traction disc 3 in a spanning manner. In the radial direction, it forms a physical shield for the rope housed in the second traction disc 3, thereby effectively preventing the rope from radially slipping out of the traction groove 4 during operation.

[0037] In another preferred embodiment, the rope cover 52 can be formed by hinged sequentially from multiple independent arc-shaped cover segments to constitute a foldable flexible protective curtain. The shape and curvature of each cover segment are adapted to the contour of its corresponding local traction disc. The first cover segment is hinged to the housing 1 as a whole, while the last cover segment is detachably locked to the housing 1 through the first connecting part 51.

[0038] Specifically, the first connecting part 51 is detachably connected to the chassis 1 using a spring pull buckle.

[0039] In some specific embodiments of the present invention, to further optimize rope path management and eliminate operational interference, a rope separator 6 is also included. The rope separator 6 is fixedly mounted on the housing 1 and located below the first traction disc 2. The rope separator 6 extends at least partially into the traction groove 4, and is configured to separate the input and output sections of the rope. Figure 4 As shown, the rope separator 6 is fixed to the housing 1 and positioned below the first traction disc 2. Its upper end extends into the opening area of ​​the second traction disc 3, rather than contacting the rotating components. The rope separator 6 divides the space below the second traction disc 3 into two clearly defined and physically isolated channels: one for the load-bearing input section and the other for the rope release output section. This physical separation prevents the two rope strands from slapping, rubbing, or even tangling during high-speed operation or vibration, ensuring efficient power transmission and improving the system's operational stability.

[0040] In some specific embodiments of the present invention, the rope splitter 6 includes a guide block 61, on which a first guide arc surface 611 and a second guide arc surface 612 are provided. The first guide arc surface 611 is located at one end of the guide block 61 near the rope output side of the traction groove 4, and the first guide arc surface 611 is recessed in the direction away from the rope output side of the traction groove 4. The second guide arc surface 612 is located at one end of the guide block 61 near the rope input side of the traction groove 4, and the second guide arc surface 612 is recessed in the direction away from the rope input side of the traction groove 4.

[0041] like Figure 4 and Figure 5As shown, the guide block 61 has two guide surfaces with opposite shapes. The concave surface of the first guide surface 611 is recessed to the right, and the concave surface of the second guide surface 612 is recessed to the left. It should be noted that the first guide surface 611 matches the trajectory of the rope as it leaves the traction disc. Therefore, when the rope output section detaches from the second traction disc 3, the first guide surface 611 can smoothly change its direction of motion from the rotational tangent direction to the downward output direction. The curvature of the second guide surface 612 guides the rope input section from below, ensuring that the rope's axis is nearly parallel to the meshing tangent of the first and second traction discs 2 and 3 before entering the second traction disc 3. Furthermore, the second guide surface 612 forms a natural convergence funnel, ensuring that even with slight initial deviations in rope placement, it can be automatically corrected and guided into the meshing area between the first and second traction discs 2 and 3, thereby reducing the difficulty of rope threading and the requirements for operational precision.

[0042] In some specific embodiments of the present invention, the rope splitter 6 further includes a track splitter 62, which extends upward from the upper edge of the guide block 61 and is inserted into the traction groove 4. A guide slope 621 is provided at one end of the track splitter 62 near the second guide arc surface 612. The guide slope 621 is smoothly connected to the second guide arc surface 612 and extends upward inclined into the traction groove 4.

[0043] like Figure 4 As shown, the guide plate 62 extends upward from the upper edge of the guide block 61 and enters the opening area of ​​the second traction disc 3. Its top end is an arc shape that matches the curvature of the inner axis of the second traction disc 3. A guide ramp 621 is provided on the right side of the guide plate 62. The guide ramp 621 is smoothly connected to the second guide arc surface 612 on the lower guide block 61, together forming a guide channel that extends upward into the traction groove 4. This guides the rope to engage precisely, thereby reducing the lateral impact force and friction noise when the rope enters the groove, achieving a near-silent engagement process, and significantly reducing the wear on the rope surface.

[0044] Preferably, the extending direction of the guide ramp 621 is set to be tangent to the meshing circumference of the inner side of the second traction disc 3.

[0045] In some specific embodiments of the present invention, a limiting member 7 is also included. The limiting member 7 is fixedly disposed on the housing 1 and located on one side of the rope splitter 6. The limiting member 7 has a bundle hole 71, which corresponds to the input end and the output end of the rope splitter 6. The size of the bundle hole 71 is sufficient to allow the input segment and the output segment of the rope to pass through simultaneously. The limiting member 7 is configured to simultaneously constrain the input segment and the output segment of the rope to limit the swing amplitude of the rope.

[0046] like Figure 6As shown, the limiting member 7 is fixed to the housing 1 and located below the rope distributor 6, serving as a stabilizing node after the rope leaves the rope distributor 6 and before reaching the external load. Specifically, the limiting member 7 has a bundling hole 71, the size and spatial position of which can simultaneously accommodate and smoothly pass through the rope input and output sections separated by the rope distributor 6. Thus, although the two ropes are physically separated and guided to different paths at the rope distributor 6, they will be orderly bundled together again by the bundling hole 71 before entering the final working state. In addition, the inner wall of the bundling hole 71 provides circumferential constraint to the two ropes. When the equipment is running or the load shakes, the bundling hole 71 can suppress the potentially large-amplitude disorderly swing of the ropes into a slight movement close to the hole wall, thereby reducing the accidental snagging, whipping, and unnecessary impact on the housing 1 or other components that may be caused by rope swinging, and improving the operational stability and safety of the entire system under dynamic conditions.

[0047] In some specific embodiments of the present invention, the end of the first guide arc surface 611 away from the first traction disc 2 is coplanar with the end of the second guide arc surface 612 away from the first traction disc 2. The depth of the second guide arc surface 612 along the axial direction of the first traction disc 2 is less than the depth of the first guide arc surface 611. The width of the bundle hole 71 gradually increases from the second guide arc surface 612 toward the first guide arc surface 611. The second guide arc surface 612 can guide the input section of the rope to the central engagement area of ​​the traction groove 4.

[0048] like Figure 5 and Figure 6 As shown, the front edges of the first guide arc surface 611 and the second guide arc surface 612 on the guide block 61 are located in the same reference vertical plane. The depth of the second guide arc surface 612 along the axis of the first traction disc 2 is less than the depth of the first guide arc surface 611. It should be noted that the shallower depth constraint forces the centerline of the rope to be confined to a spatial range closer to the preset path when it enters the second guide arc surface 612. Combined with the leftward concavity curvature of the second guide arc surface 612, the rope is naturally and accurately guided to the center of the width of the second traction disc 3, that is, the central meshing area formed by the interlacing teeth of the two traction discs.

[0049] Meanwhile, in order to match the second guide arc surface 612, the width of the bundle hole 71 gradually increases from the left side corresponding to the first guide arc surface 611 to the right side corresponding to the second guide arc surface 612, so as to accommodate the input section rope guided from the shallower second guide arc surface 612 and whose path is relatively further outward, while reserving sufficient space for the output section rope led from the deeper first guide arc surface 611, so that both ropes can remain straight when passing through the bundle hole 71, without lateral compression and friction, forming a stable and interference-free parallel input and output state.

[0050] In some specific embodiments of the present invention, an auxiliary pulley 8 is also included. The auxiliary pulley 8 is rotatably mounted on the housing 1 and located on the input end side of the rope distributor 6. The axis of the auxiliary pulley 8 is parallel to the axis of the first traction disc 2. The auxiliary pulley 8 is configured to isolate lateral disturbances from an external rope source before the rope enters the traction groove 4, so that the rope is introduced at a constant angle.

[0051] like Figure 1 and Figure 2 As shown, the auxiliary pulley 8 is rotatably mounted on the housing 1 and located on the side of the rope distributor 6 near the rope input end, extending axially in the front-to-back direction. A groove is machined on the rim of the auxiliary pulley 8, making it a track pulley with axial limiting function. When the input section of the rope is led out from the bundle hole 71, its path is first guided to the right by the second guide arc surface 612, then it adheres to and presses against the groove of the auxiliary pulley 8, thereby guiding the rope to an upward angle and simultaneously constraining its displacement in the front-to-back direction. Lateral vibrations of the rope caused by external load swings, personnel operation, or environmental factors are first blocked and absorbed by the sidewall of the groove when transmitted to the auxiliary pulley 8. Simultaneously, the extremely low rotational resistance of the auxiliary pulley 8 ensures smooth rope pulling motion, effectively isolating and dissipating irregular lateral movements. Therefore, regardless of fluctuations in external input conditions, the rope can smoothly enter the second traction disc 3 at the preset optimal angle of attack, fundamentally eliminating the jumping, slapping, and angle deviation caused by inlet disturbances, and ensuring the continuous and stable transmission of traction force.

[0052] In some specific embodiments of the present invention, the first traction disc 2 is connected to the first driving member via a spline shaft 22, the second traction disc 3 is mounted on the spline shaft 22, the second traction disc 3 can slide along the axial direction of the spline shaft 22, a fixed disc 32 is fixedly provided at the end of the spline shaft 22 away from the first traction disc 2, a first elastic member 321 is provided between the fixed disc 32 and the second traction disc 3, and the first elastic member 321 is configured to press the second traction disc 3 against the first traction disc 2.

[0053] like Figure 7 As shown, the first traction disc 2 and the second traction disc 3 are linked by a splined shaft 22 passing through them. Specifically, the splined shaft 22 is connected to the first driving component. The first traction disc 2 engages with the splined shaft 22 via an internal spline and is supported on the housing 1 by bearings. The second traction disc 3 engages with the splined shaft 22 via an internal spline and can rotate synchronously with the shaft while sliding freely along the axial direction of the splined shaft 22. A fixed disc 32 is fixedly installed at the front end of the splined shaft 22, and a first elastic element 321 is installed between the fixed disc 32 and the second traction disc 3.

[0054] It should be noted that when using ropes thinner than the design specifications, insufficient clamping contact area and insufficient clamping force often lead to traction slippage, affecting efficiency and safety. On the other hand, when using thicker ropes, they may not be able to be installed smoothly or may cause excessive compression damage, or even fail to fit into the second traction disc 3 at all. This pickiness regarding rope specifications severely limits the adaptability and uptime of a single piece of equipment in different tasks.

[0055] The technical solution of this invention introduces a floating adaptive constant force clamping system, which utilizes the preload of the first elastic element 321 to constantly attempt to push the second traction disc 3 towards the first traction disc 2. When a rope with a smaller diameter is inserted, the preload is sufficient to bring the two traction discs close together, generating sufficient radial clamping force even for thin ropes, effectively preventing slippage. When a rope with a larger diameter is inserted, the rope itself overcomes part of the elastic force of the first elastic element 321, pushing the second traction disc 3 away, thereby automatically widening the width of the second traction disc 3 to accommodate the thicker rope. At this time, the first elastic element 321 is further compressed, and its rebound force also increases, ensuring that sufficient adaptive clamping force is maintained even for thicker ropes. Based on the above structure, a single device can safely and efficiently adapt to a wide range of ropes with different diameters without replacing any parts. This not only enhances the operational flexibility and task response speed of the device but also protects the rope from damage caused by overpressure or underpressure through constant adaptive clamping force, ensuring reliable transmission of traction force under various loads.

[0056] Specifically, the first elastic element 321 is preferably a compression spring or a disc spring assembly to provide stable pressure with a small footprint. These are all mature technologies that can be flexibly selected in the art according to specific performance requirements, and their conventional details will not be elaborated here.

[0057] Furthermore, in the field of automatic lifting devices, such devices need to meet two core operating conditions during operation. First, under load, the traction disc must provide sufficient clamping force to the rope to prevent slippage. Second, when unloaded, in standby mode, or when the rope position needs to be adjusted manually and quickly, it is expected that the traction disc can quickly release the rope to reduce operating resistance and avoid unnecessary rope wear.

[0058] To respond to this extreme working condition, some specific embodiments of the present invention also include a clutch mechanism 9, which is mounted on the housing 1 and connected to the second traction disc 3. The clutch mechanism 9 is configured to drive the second traction disc 3 toward or away from the first traction disc 2. In the no-load state, the clutch mechanism 9 remains in standby mode. Once it detects rope tension, it drives the second traction disc 3 to move along the splined shaft 22 toward the first traction disc 2 to clamp the rope in the traction groove 4 between the two traction discs.

[0059] In some specific embodiments of the present invention, the clutch mechanism 9 includes: a connecting sleeve 91, rotatably disposed inside the housing 1, the connecting sleeve 91 being sleeved on the spline shaft 22, the connecting sleeve 91 cooperating with the spline shaft 22 via an internal spline; a locking sleeve 92, fixedly disposed on the housing 1, the locking sleeve 92 being sleeved on the outside of the connecting sleeve 91, the locking sleeve 92 being connected to the connecting sleeve 91 via a bearing; and a second driving member 93, disposed on the locking sleeve 92, the second driving member 93 being drively connected to the spline shaft 22, the second driving member 93 being configured to drive the spline shaft 22 to move along its axial direction, thereby driving the second traction disc 3 to approach or move away from the first traction disc 2.

[0060] like Figure 8 and Figure 9 As shown, the splined shaft 22 is not completely axially fixed; it can slide axially relative to the housing 1 within a limited range within the connecting sleeve 91. Specifically, the splined shaft 22 is mounted on the housing 1 in the front-rear direction. The first traction disc 2 engages with the front end of the splined shaft 22 via an internal spline and is supported on the housing 1 by bearings. The second traction disc 3 is fitted onto the splined shaft 22 via an internal spline and is located on the side of the first traction disc 2 away from the housing 1. It can rotate synchronously with the splined shaft 22 and slide axially along the splined shaft 22. The connecting sleeve 91 is fitted onto the rear end of the splined shaft 22 and engages with the splined shaft 22 via an internal spline. The locking sleeve 92 is fixed to the housing 1 and is coaxially fitted onto the outside of the connecting sleeve 91 via a set of bearings. No torque is transmitted between the connecting sleeve 91 and the locking sleeve 92, and they can rotate freely. Based on this, the connecting cylinder 91 and the spline shaft 22 can rotate freely, and the second driving member 93 is set on the locking sleeve 92 and can drive the spline shaft 22 to slide axially, so as to drive the second traction disc 3 to move closer to or away from the first traction disc 2.

[0061] When the equipment is unloaded or the rope tension is below the set threshold, a release gap is maintained between the first traction disc 2 and the second traction disc 3, allowing the rope to slide freely within the traction groove 4. The equipment is equivalent to a certain pulley. When the rope bears a load and the tension reaches or exceeds the set threshold, the second drive member 93 drives the spline shaft 22 and drives the second traction disc 3, which is fixedly connected to it, to move axially toward the first traction disc 2. The conical surfaces of the two traction discs then close, radially pressing the rope contained in the traction groove 4 between the staggered first clamping teeth 41 and the second clamping teeth 42. The equipment then automatically switches to the traction working mode.

[0062] It should be noted that the second drive component 93 can be flexibly configured according to specific working conditions, such as a servo electric cylinder, linear stepper motor, pneumatic cylinder, or hydraulic cylinder. The trigger signal can be directly derived from monitoring the rope state. For example, a pressure sensor or micro switch can be integrated on the auxiliary pulley 8 to detect the presence of rope tension, or non-contact detection elements such as encoders can be used to determine whether the rope is under working tension by monitoring the rotation or displacement of the auxiliary pulley 8. The signals collected by the aforementioned sensors can be transmitted to the control system, and after logical judgment, the second drive component 93 can be driven to operate, thereby realizing the automated and programmable switching from the "loose rope" to the "tight rope" working state. Further details will not be elaborated here.

[0063] In some specific embodiments of the present invention, a triggering mechanism 10 is also included, which is connected to the clutch mechanism 9 in a transmission manner. The triggering mechanism 10 is configured to drive the clutch mechanism 9 to operate according to the change in rope tension.

[0064] In some specific embodiments of the present invention, the triggering mechanism 10 includes: an L-shaped guide groove 101 formed on the wall of the locking sleeve 92; a triggering swing rod 102, one end of which is fixedly connected to the connecting cylinder 91, and the other end of which passes through the L-shaped guide groove 101 and is fixedly connected to the auxiliary pulley 8, the auxiliary pulley 8 being able to swing relative to the housing 1; and a second elastic member connected between the triggering swing rod 102 and the housing 1, the second elastic member being configured to drive the triggering swing rod 102 to move the auxiliary pulley 8 closer to the rope; wherein, when the rope is unloaded, the second elastic member maintains the triggering swing rod 102 in the locked position of the L-shaped guide groove 101; when the rope is loaded, the rope tension drives the auxiliary pulley 8 to swing, thereby driving the triggering swing rod 102 to disengage from the locked position of the L-shaped guide groove 101 and move to the release position, the movement of the triggering swing rod 102 triggers the action of the second driving member 93, driving the second traction disc 3 to approach the first traction disc 2, thereby clamping the rope in the traction groove 4.

[0065] like Figure 8 and Figure 9As shown, an L-shaped guide groove 101 is machined on the wall of the locking sleeve 92. The L-shaped guide groove 101 has a longitudinal groove extending along the axis of the locking sleeve 92 and a transverse groove extending circumferentially along the locking sleeve 92. The end of the transverse groove is the locking position, and the corner where the transverse groove connects to the longitudinal groove is the release position. One end of the trigger lever 102 is fixedly connected to the connecting cylinder 91, and the other end passes through the L-shaped guide groove 101 and is fixedly connected to the auxiliary pulley 8 located outside the housing 1. A second elastic element acts between the trigger lever 102 and the housing 1, or between the trigger lever 102 and the locking sleeve 92. The second elastic element can apply pressure to the auxiliary pulley 8, causing the auxiliary pulley 8 to tend to move closer to the rope. In this specific embodiment, the second drive member 93 can be a third elastic element, which is installed between the connecting cylinder 91 and the locking sleeve 92. It applies tension to the connecting cylinder 91, causing the second traction disc 3 to tend to move closer to the first traction disc 2.

[0066] When the rope is unloaded, the second elastic element presses the trigger lever 102 into the locked position of the L-shaped guide groove 101. At this time, the trigger lever 102 mechanically blocks the axial tension that the third elastic element attempts to release through the locking sleeve 92, and the entire mechanism is in a state of energy storage and readiness. Once the rope is loaded, for example, after the rope position is manually adjusted, the tension is increased by pulling and stretching to make it taut. The tension of the rope overcomes the force of the second elastic element and drives the trigger lever 102 and the auxiliary pulley 8 to swing back. This swing causes the lever 102 to disengage from the transverse groove of the L-shaped guide groove 101 and slide from the release position into the longitudinal groove. At the moment the lock is released, the energy stored in the third elastic element is suddenly released, pulling the spline shaft 22 and driving the second traction disc 3 linked with it to move rapidly along the axial direction towards the first traction disc 2 to clamp the rope in the traction groove 4.

[0067] Furthermore, an external reset handle, pull ring, or push rod can be provided, connected to the connecting cylinder 91 or the trigger lever 102 via a simple connecting rod. After braking occurs, the operator manually operates the handle to overcome the residual force of the energy-storing third elastic element, pushing the connecting cylinder 91 back to its initial position. Simultaneously, the trigger lever 102 is driven to retract along the longitudinal groove of the L-shaped groove, and the lever or connecting cylinder 91 is manually rotated to re-engage in the locking position of the transverse groove. As an enhancement to the basic scheme, an electric push rod or micro motor can be added without changing the above reset logic. After braking occurs, this electric component is activated via a button or controller to perform the action of pushing the connecting cylinder 91 back and rotating it.

[0068] In a specific embodiment of the present invention, the second elastic element is typically a torsion spring or a tension spring, designed to provide a reliable swing-restoring force to ensure the triggering mechanism 10 responds sensitively to the loss of tension; the third elastic element is preferably a compression spring, whose elastic force drives the connecting cylinder 91 to move the splined shaft 22 axially, thereby bringing the second traction disc 3 closer to the first traction disc 2, exhibiting rapid response characteristics and excellent fatigue life. The specific models and parameters of the above-mentioned elastic elements can be conventionally designed and selected according to the actual load level, safety standards, and size requirements. These are conventional technical means that can be implemented by those skilled in the art based on published standards and manuals, and will not be elaborated further here.

[0069] This invention also discloses a load-bearing device, including a portable automatic lifter and a hanger. A housing 1 is connected to the hanger, which is configured to fix the housing 1 to an external support structure or load-bearing object. Specifically, the housing 1 of the portable automatic lifter is connected to the hanger in a detachable or fixed manner. The hanger is configured to securely install or suspend the entire portable automatic lifter on various external support structures or load-bearing objects, thus forming a complete lifting workstation in practical applications. In some specific embodiments of this invention, the hanger can be a metal frame with standard hooks or U-bolts, which operators can directly attach to scaffold crossbars, roof trusses, window sill edges, or railings of dedicated work platforms. In this way, the portable automatic lifter can be quickly deployed to high-altitude or confined space work points via the hanger. This modular design greatly expands the application scenarios of this invention, enabling it not only to be used as a handheld device but also as a fixed or semi-fixed power source, integrated into more complex lifting or rescue systems.

[0070] The following is through Figures 1 to 9 The specific structure further illustrates the working principle of the portable automatic lift of the present invention.

[0071] Reference Figures 1 to 6 The operator passes the rope through the bundle hole 71 on the limiting member 7 and winds it into the second traction disc 3, which is formed by the opposing conical surfaces of the first traction disc 2 and the second traction disc 3. After starting the equipment, the first drive unit drives the first traction disc 2 and the second traction disc 3 to rotate synchronously. The rope is accommodated in the traction groove 4, and its cylindrical surface meshes with the first clamping teeth 41 and the second clamping teeth 42, which are staggered on the two conical surfaces. During rotation, the first clamping teeth 41 and the second clamping teeth 42 apply circumferential friction to the rope, forming a traction force to lift or lower the load. The rope separator 6 located below the traction disc physically isolates the input and output sections of the rope to prevent them from tangling, while the rope guard 5 is wrapped around the outer edge of the traction groove 4 to prevent the rope from accidentally coming off during operation.

[0072] In a further preferred embodiment, the first traction disc 2 and the second traction disc 3 are connected by a splined shaft 22. The second traction disc 3 is configured to slide axially along the splined shaft 22 and is subjected to a constant preload by a first elastic element 321, causing it to tend to move closer to the first traction disc 2. When using ropes of different diameters, the gap between the first traction disc 2 and the second traction disc 3 can be automatically adjusted. Specifically, for thin ropes, the preload drives the two discs together, ensuring sufficient clamping force to prevent slippage; for thick ropes, the rope's own dimensions overcome part of the preload, pushing the second traction disc 3 apart to widen it, while the first elastic element 321 is further compressed, providing a greater clamping force to reliably clamp the thick rope. This process is completely adaptive, requiring no manual intervention, and achieves safe and efficient compatibility of a single device with a wide range of rope diameters.

[0073] In a further preferred embodiment, when the rope is unloaded, the second elastic element presses against the auxiliary pulley 8, causing the trigger lever 102, which is linked to the auxiliary pulley 8, to lock in the L-shaped guide groove 101 on the locking sleeve 92. Once the rope is loaded, the resulting tension causes the second elastic element to drive the trigger lever 102 to swing, disengaging it from the locking position and sliding it into the release position. After the lock is released, the second drive element 93 drives the spline shaft 22 to bring the second traction disc 3 closer to the first traction disc 2, thereby pressing the rope in the traction groove 4 onto the first traction disc 2, and the device automatically switches to the traction working mode.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A portable automatic lifting device, characterized in that, include: Chassis (1); The first traction disc (2) is rotatably mounted on the housing (1), and the first traction disc (2) has a first conical surface (21). The second traction disc (3) is rotatably mounted on the housing (1). The second traction disc (3) is coaxially mounted with the first traction disc (2). The second traction disc (3) has a second conical surface (31). The first conical surface (21) and the second conical surface (31) are arranged facing each other, and a traction groove (4) extending in the circumferential direction is defined between the first conical surface (21) and the second conical surface (31). A plurality of first clamping teeth (41) extending in the radial direction are uniformly arranged on the first conical surface (21) in the circumferential direction, and a plurality of second clamping teeth (42) extending in the radial direction are uniformly arranged on the second conical surface (31) in the circumferential direction. The plurality of first clamping teeth (41) and the plurality of second clamping teeth (42) are arranged alternately. The first driving component is fixedly installed inside the housing (1). The first driving component is connected to the first traction disc (2) and the second traction disc (3). The first driving component can drive the first traction disc (2) and the second traction disc (3) to rotate synchronously to pull the rope clamped in the traction groove (4).

2. The portable automatic lifting device according to claim 1, characterized in that, It also includes a rope guard (5), which is wrapped around the outside of the traction groove (4) and is configured to prevent the rope from coming out of the traction groove (4).

3. The portable automatic lifting device according to claim 2, characterized in that, The rope protector (5) includes: The first connecting part (51) is detachably mounted on the chassis (1); The rope guard (52) is rotatably connected at one end to the housing (1) and rotatably connected at the other end to the first connecting part (51). At least part of the curvature of the rope guard (52) is adapted to the contour of the first traction disc (2). The rope guard (52) covers the outer edge of the first traction disc (2) and the outer edge of the second traction disc (3) to enclose the opening of the traction groove (4).

4. The portable automatic lifting device according to claim 3, characterized in that, It also includes a rope separator (6), which is fixedly mounted on the housing (1) and located below the first traction disc (2). The rope separator (6) extends at least partially into the traction groove (4). The rope separator (6) is configured to separate the input and output sections of the rope to prevent the input and output sections of the rope from interfering with each other.

5. The portable automatic lifting device according to claim 4, characterized in that, The rope splitter (6) includes a guide block (61), on which a first guide arc surface (611) and a second guide arc surface (612) are provided. The first guide arc surface (611) is located on the guide block (61) at one end near the rope output side of the traction groove (4), and the first guide arc surface (611) is recessed in a direction away from the rope output side of the traction groove (4). The second guide arc surface (612) is located on the guide block (61) at one end near the rope input side of the traction groove (4), and the second guide arc surface (612) is recessed in a direction away from the rope input side of the traction groove (4).

6. The portable automatic lifting device according to claim 5, characterized in that, The rope splitter (6) also includes a track splitter (62), which extends upward from the upper edge of the guide block (61) and is inserted into the traction groove (4). The track splitter (62) has a guide slope (621) at one end near the second guide arc surface (612). The guide slope (621) is smoothly connected to the second guide arc surface (612) and extends upward at an inclination into the traction groove (4).

7. The portable automatic lifting device according to claim 6, characterized in that, It also includes a limiting member (7), which is fixedly mounted on the housing (1) and located on one side of the rope splitter (6). The limiting member (7) has a bundle hole (71) which corresponds to the input end and the output end of the rope splitter (6). The size of the bundle hole (71) allows the input and output segments of the rope to pass through simultaneously. The limiting member (7) is configured to simultaneously constrain the input and output segments of the rope to limit the swing amplitude of the rope.

8. The portable automatic lifting device according to claim 7, characterized in that, The end of the first guide arc surface (611) away from the first traction disc (2) is coplanar with the end of the second guide arc surface (612) away from the first traction disc (2). The depth of the second guide arc surface (612) along the axis of the first traction disc (2) is less than the depth of the first guide arc surface (611). The width of the bundle hole (71) gradually increases from the second guide arc surface (612) toward the first guide arc surface (611). The second guide arc surface (612) can guide the input section of the rope to the central engagement area of ​​the traction groove (4).

9. The portable automatic lifting device according to claim 4, characterized in that, It also includes an auxiliary pulley (8), which is rotatably mounted on the housing (1) and located on the input side of the rope distributor (6). The axis of the auxiliary pulley (8) is parallel to the axis of the first traction disc (2). The auxiliary pulley (8) is configured to isolate lateral disturbances from an external rope source before the rope enters the traction groove (4) so ​​that the rope is introduced at a constant angle.

10. The portable automatic lifting device according to claim 9, characterized in that, The first traction disc (2) is connected to the first drive member via a spline shaft (22). The second traction disc (3) is mounted on the spline shaft (22). The second traction disc (3) can slide along the axial direction of the spline shaft (22). A fixed disc (32) is fixedly provided at one end of the spline shaft (22) away from the first traction disc (2). A first elastic element (321) is provided between the fixed disc (32) and the second traction disc (3). The first elastic element (321) is configured to press the second traction disc (3) against the first traction disc (2).

11. The portable automatic lifting device according to claim 10, characterized in that, It also includes a clutch mechanism (9) which is disposed on the chassis (1) and connected to the second traction disc (3). The clutch mechanism (9) is configured to drive the second traction disc (3) to move closer to or away from the first traction disc (2).

12. The portable automatic lifting device according to claim 11, characterized in that, The clutch mechanism (9) includes: A connecting cylinder (91) is rotatably disposed inside the housing (1). The connecting cylinder (91) is sleeved on the spline shaft (22). The connecting cylinder (91) is engaged with the spline shaft (22) through an internal spline. A locking sleeve (92) is fixedly mounted on the chassis (1). The locking sleeve (92) is sleeved on the outside of the connecting cylinder (91). The locking sleeve (92) is connected to the connecting cylinder (91) through a bearing. The second drive member (93) is disposed on the locking sleeve (92). The second drive member (93) is connected to the spline shaft (22) in a transmission manner. The second drive member (93) is configured to drive the spline shaft (22) to move along its axial direction so as to drive the second traction disc (3) to move closer to or away from the first traction disc (2).

13. The portable automatic lifting device according to claim 12, characterized in that, It also includes a triggering mechanism (10), which is connected to the clutch mechanism (9) in a transmission manner. The triggering mechanism (10) is configured to drive the clutch mechanism (9) to operate according to the change in rope tension.

14. The portable automatic lifting device according to claim 13, characterized in that, The triggering mechanism (10) includes: An L-shaped guide groove (101) is formed on the cylinder wall of the locking sleeve (92); A trigger lever (102) is fixedly connected at one end to the connecting cylinder (91), and at the other end passes through the L-shaped guide groove (101) and is fixedly connected to the auxiliary pulley (8). The auxiliary pulley (8) can swing relative to the chassis (1). The second elastic element is connected between the trigger lever (102) and the chassis (1). The second elastic element is configured to drive the trigger lever (102) to move the auxiliary pulley (8) closer to the rope. When the rope is unloaded, the second elastic element keeps the trigger lever (102) locked in the L-shaped guide groove (101); when the rope is loaded, the rope tension drives the auxiliary pulley (8) to swing, so as to drive the trigger lever (102) to disengage from the locked position of the L-shaped guide groove (101) and move to the release position. The movement of the trigger lever (102) triggers the second drive element (93) to move, driving the second traction disc (3) to approach the first traction disc (2) to clamp the rope in the traction groove (4).

15. A load-bearing device, characterized in that, The portable automatic lifter and the hanger included in any one of claims 1 to 14, wherein the housing (1) is connected to the hanger and the hanger is configured to fix the housing (1) to an external support structure or load.

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