Portable automatic lift and load hanger device

Abstract

The application discloses a portable automatic lifter and load hanging device, and belongs to the technical field of load hanging. The portable automatic lifter comprises a machine case, a first traction disc, a second traction disc and a first driving piece. The second traction disc is arranged on the machine case in a synchronous rotating mode with the first traction disc. The first traction disc is provided with a first conical surface, and the second traction disc is provided with a second conical surface. A traction groove extending in a circumferential direction is defined between the first conical surface and the second conical surface. A plurality of first clamping teeth are uniformly arranged on the first conical surface in a circumferential direction. A plurality of second clamping teeth are uniformly arranged on the second conical surface in a circumferential direction. The plurality of first clamping teeth and the plurality of second clamping teeth are arranged in a staggered mode, so that a rope can be accommodated in the traction groove and simultaneously engaged with the first clamping teeth and the second clamping teeth. The application can be adapted to drive various types and diameters of ropes to continuously perform conveying operations, so as to meet the requirements of multi-task quick switching in complex high-altitude and limited space operations and improve operation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of load hanging, and in particular to a portable automatic lifter and a load hanging device. BACKGROUND

[0002] When the load hanging device is applied to complex high-altitude operations, limited space intervention and emergency rescue fields, such as high-rise building maintenance, wind turbine maintenance, bridge cable construction, mountain valley material transportation and industrial equipment rapid repair, etc., the operation party generally faces a common challenge, that is, under the constraints of limited space access path, unsatisfactory ground support conditions and urgent operation time window, a hoisting rope lifter is needed to quickly build a reliable and controllable vertical or inclined power transmission channel.

[0003] Traditionally, such a vertical channel is built by relying on large climbing platforms, heavy winches or fixed hoists. However, these large equipment have poor mobility, long deployment period and high requirements for operation environment, and are difficult to adapt to the narrow corridors, irregular facades, rugged terrain or temporary operation platforms commonly seen in the above-mentioned scenarios.

[0004] To improve mobility, various light and portable rope-driven devices have appeared in the market. However, a single operation task often involves multiple links, for example, a flexible and highly ductile rescue rope may be needed to safely lift personnel first, then a wear-resistant flat hoisting belt may be needed to transport heavy tools, and finally a standard steel wire rope may be needed for long-term material transportation. The existing portable hoisting device is usually optimized for a specific rope diameter and type, and the clamping mechanism is fixed. If the ropes are mixed and used, the clamping force may be insufficient for thin and soft ropes, which may cause speed loss and slipping risk; for thick and hard ropes, it is difficult to accommodate or may cause excessive compression, which may damage the rope core structure and form a hidden safety hazard. This pickiness of the rope forces the site to be equipped with multiple devices or to frequently replace parts, which not only reduces the single machine attendance efficiency, but also seriously delays the progress of the task. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a portable automatic lifter which can safely and efficiently adapt to and drive various types and diameters of ropes for continuous conveying operations, thereby meeting the needs of multi-task rapid switching in complex high-altitude and limited space operations and improving operation efficiency.

[0006] The present application also proposes a load hanging device.

[0007] The portable automatic lifter according to the first aspect of the present application comprises: a machine box; a first traction disc rotatably arranged on the machine box, the first traction disc having a first taper surface; a second traction disc rotatably arranged on the machine box, the second traction disc coaxially arranged with the first traction disc, the second traction disc having a second taper surface; the first taper surface and the second taper surface are oppositely arranged, a traction groove extending in the circumferential direction is defined between the first taper surface and the second taper surface, a plurality of first clamping teeth extending in the radial direction of the first taper surface are uniformly arranged on the first taper surface in the circumferential direction, a plurality of second clamping teeth extending in the radial direction of the second taper surface are uniformly arranged on the second taper surface in the circumferential direction, the plurality of first clamping teeth and the plurality of second clamping teeth are staggered; a first driving member fixedly arranged in the machine box, the first driving member being in transmission connection with the first traction disc and the second traction disc, the first driving member being capable of driving the first traction disc and the second traction disc to synchronously rotate to pull the rope clamped in the traction groove.

[0008] The first traction disc is driven by the first driving member and rotatably supported on the machine box, and the end of the first traction disc away from the machine box is provided with the first taper surface. The second traction disc is coaxially arranged on the side of the first traction disc away from the machine box, is in transmission connection with the first driving member and can synchronously rotate with the first traction disc, and the end of the second traction disc facing the first traction disc is provided with the second taper surface. The contraction sections of the first taper surface and the second taper surface oppositely face each other, and together define an annular space extending in the circumferential direction and having a V-shaped cross section, which is used for accommodating the rope. The first taper surface is uniformly distributed with a plurality of first clamping teeth extending in the radial direction thereof in the circumferential direction, and similarly, the second taper surface is also uniformly distributed with a plurality of second clamping teeth extending in the radial direction thereof in the circumferential direction, and the plurality of first clamping teeth and the plurality of second clamping teeth are staggered in the circumferential direction, that is, from the 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 accommodated in the traction groove, the cylindrical surface thereof is simultaneously extruded against the side walls of the staggered first clamping teeth and second clamping teeth, the first driving member is started to drive the first traction disc and the second traction disc to synchronously rotate, the rotational torque is converted into the circumferential friction force acting on the rope, and the stable traction of the rope is realized. The technical scheme of the present application multiplies the effective force points in the circumferential direction of the rope through the staggered meshing structure, the load generated in the rope traction process is converted into the radial pressure, the clamping teeth are forced to be embedded deeper into the surface of the rope, and thus the traction groove tapering inward in the radial direction can realize self-adaptive adaptation when facing different diameter ropes, that is, the fine rope is fully enveloped and the thick rope is partially engaged, which not only ensures the anti-slip holding force of the fine rope, but also avoids excessive extrusion damage to the thick rope, realizes the wide range compatibility from the fine rescue rope to the thick hoisting belt, and improves the safety and applicability of the traction operation.

[0009] According to some embodiments of the present application, the rope protector is further provided, which is arranged outside the traction groove and configured to prevent the rope from being pulled out of the traction groove.

[0010] According to some embodiments of the present application, the rope protector comprises a first connecting part which is detachably arranged on the machine box, and a rope cover which is rotatably connected to the machine box at one end and rotatably connected to the first connecting part at the other end, wherein the curvature of at least part of the rope cover is adapted to the profile of the first traction disc, and the rope cover covers the outer edges of the first traction disc and the second traction disc to enclose the opening of the traction groove.

[0011] According to some embodiments of the present application, the rope divider is further provided, which is fixedly arranged on the machine box and located below the first traction disc, and at least partially extends into the traction groove, and is configured to separate the input section and the output section of the rope.

[0012] According to some embodiments of the present application, the rope divider comprises a guide block, wherein the guide block is provided with a first guide arc surface and a second guide arc surface, the first guide arc surface is located at one end of the guide block close to the rope output side of the traction groove, and the first guide arc surface is recessed in the direction away from the rope output side of the traction groove, and the second guide arc surface is located at one end of the guide block close to the rope input side of the traction groove, and the second guide arc surface is recessed in the direction away from the rope input side of the traction groove.

[0013] According to some embodiments of the present application, the rope divider further comprises a rail dividing piece, wherein the rail dividing piece extends upward from the upper edge of the guide block and is inserted into the traction groove, and one end of the rail dividing piece close to the second guide arc surface is provided with a guide inclined surface, and the guide inclined surface smoothly connects with the second guide arc surface and extends upwardly and obliquely into the traction groove.

[0014] According to some embodiments of the present application, the limiting part is further provided, which is fixedly arranged on the machine box and located at one side of the rope divider, and is provided with a bundling hole corresponding to the input end and the output end of the rope divider, and the size of the bundling hole is capable of allowing the input section and the output section of the rope to pass through at the same time, and the limiting part is configured to simultaneously constrain the input section and the output section of the rope to limit the swing amplitude of the rope.

[0015] According to some embodiments of the present application, the first guide arc surface away from the first traction disc is coplanar with the second guide arc surface away from the first traction disc, the depth of the second guide arc surface along the axis direction of the first traction disc is less than the depth of the first guide arc surface, the width of the bundling hole gradually increases from the second guide arc surface to the first guide arc surface, and the second guide arc surface can guide the input section of the rope to the central meshing area of the traction groove.

[0016] According to some embodiments of the present application, an auxiliary pulley is rotatably arranged on the cabinet and located at the input side of the rope divider, the axial direction of the auxiliary pulley is parallel to the axial direction of the first traction disc, and the auxiliary pulley is configured to isolate the lateral disturbance from the external rope source before the rope enters the traction groove, so that the rope is guided into the traction groove at a constant angle.

[0017] According to some embodiments of the present application, the first traction disc is drivingly connected with the first driving member through a spline shaft, the second traction disc is sleeved on the spline shaft, the second traction disc is capable of sliding along the axial direction of the spline shaft, and a fixed disc is fixedly arranged at the end of the spline shaft away from the first traction disc, a first elastic member is arranged between the fixed disc and the second traction disc, and the first elastic member is configured to press the second traction disc towards the first traction disc.

[0018] According to some embodiments of the present application, a clutch mechanism is arranged on the cabinet, the clutch mechanism is connected with the second traction disc, and the clutch mechanism is configured to drive the second traction disc to move towards or away from the first traction disc.

[0019] According to some embodiments of the present application, the clutch mechanism comprises a connecting cylinder rotatably arranged in the cabinet, the connecting cylinder is sleeved on the spline shaft and matched with the spline shaft through internal splines, a locking sleeve is fixedly arranged on the cabinet, the locking sleeve is sleeved on the outer side of the connecting cylinder and connected with the connecting cylinder through a bearing, and a second driving member is arranged on the locking sleeve, the second driving member is drivingly connected with the spline shaft, and the second driving member is configured to drive the spline shaft to move along the axial direction of the spline shaft, so as to drive the second traction disc to move towards or away from the first traction disc.

[0020] According to some embodiments of the present application, a trigger mechanism is drivingly connected with the clutch mechanism, and the trigger mechanism is configured to drive the clutch mechanism to act according to the change of the rope tension.

[0021] According to some embodiments of the present application, the trigger mechanism comprises an L-shaped guide slot arranged on the cylinder wall of the locking sleeve, a trigger swing lever is fixedly connected with the connecting cylinder at one end and fixedly connected with the auxiliary pulley at the other end through the L-shaped guide slot, the auxiliary pulley is capable of swinging relative to the cabinet, and a second elastic member is connected between the trigger swing lever and the cabinet, and the second elastic member is configured to drive the trigger swing lever to drive the auxiliary pulley to move towards the rope; when the rope is unloaded, the second elastic member maintains the trigger swing lever at the locking position of the L-shaped guide slot; when the rope is loaded, the rope tension drives the auxiliary pulley to swing, so as to drive the trigger swing lever to move away from the locking position of the L-shaped guide slot and to the release position, the movement of the trigger swing lever triggers the second driving member to act, and drives the second traction disc to move towards the first traction disc, so as to clamp the rope in the traction groove.

[0022] The load hanging device according to the second aspect of the present application comprises the portable automatic lifter according to the first aspect of the present application and a hanger, the case is connected with the hanger, and the hanger is configured to fix the case on an external support structure or a load.

[0023] The load hanging device has all the advantages of the portable automatic lifter, which will not be repeated here.

[0024] Additional aspects and advantages of the present application will be described in the following description and become apparent from the description or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following detailed description, from which the singular aspects become apparent.

[0026] Figure 1 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0027] Figure 2 It is a structural schematic diagram of the portable automatic lifter in the embodiment; Figure 1 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0028] Figure 3 It is a structural schematic diagram of the portable automatic lifter in the embodiment; Figure 2 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0029] Figure 4 It is a structural schematic diagram of the portable automatic lifter in the embodiment; Figure 2 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0030] Figure 5 It is a structural schematic diagram of the portable automatic lifter in the embodiment; Figure 4 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0031] Figure 6 It is a structural schematic diagram of the portable automatic lifter in the embodiment; Figure 1 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0032] Figure 7 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0033] Figure 8 It is a structural schematic diagram of the portable automatic lifter in the embodiment;

[0034] Figure 9 It is a sectional right view of the portable automatic lifter in the embodiment; Figure 8

[0035] Reference signs:

[0036] The case 1; ​

[0037] First traction disc 2, first taper surface 21, spline shaft 22;

[0038] Second traction disc 3, second taper surface 31, fixed disc 32, first elastic member 321;

[0039] Traction groove 4, first clamping tooth 41, second clamping tooth 42;

[0040] Rope protector 5, first connecting part 51, rope cover 52;

[0041] Rope separator 6, guide block 61, first guide arc surface 611, second guide arc surface 612, rail separating piece 62, guide inclined surface 621;

[0042] Limiting member 7, bundling hole 71;

[0043] Auxiliary pulley 8;

[0044] Clutch mechanism 9, connecting cylinder 91, locking sleeve 92, second driving member 93;

[0045] Trigger mechanism 10, L-shaped guide slot 101, trigger swing lever 102. DETAILED DESCRIPTION

[0046] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, left, right, front, back, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] In the description of the present application, the meaning of "several" is one or more, the meaning of "multiple" is two or more, greater than, less than, more than, etc. are understood as not including the number, "above", "below", "within", etc. are understood as including the number. If there is a description of "first", "second", etc. is configured only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0048] In the description of the present application, unless otherwise explicitly limited, the words "set", "install", "connect", etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0049] Please refer to Figures 1 to 8The embodiment discloses a portable automatic lifter which comprises a case 1, a first traction disc 2, a second traction disc 3 and a first driving member, wherein the first traction disc 2 is rotatably arranged on the case 1, the first traction disc 2 is provided with a first conical surface 21; the second traction disc 3 is coaxially arranged with the first traction disc 2, the second traction disc 3 can synchronously rotate with the first traction disc 2, the second traction disc 3 is provided with a second conical surface 31; the first conical surface 21 and the second conical surface 31 are oppositely arranged, 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 of the first conical surface 21 are uniformly arranged on the first conical surface 21 in the circumferential direction, a plurality of second clamping teeth 42 extending in the radial direction of the second conical surface 31 are uniformly arranged on the second conical surface 31 in the circumferential direction, and the plurality of first clamping teeth 41 and the plurality of second clamping teeth 42 are staggered; the first driving member is fixedly arranged in the case 1, the first driving member is in transmission connection with the first traction disc 2, the first driving member is in transmission connection with the second traction disc 3, and the first driving member can drive the first traction disc 2 and the second traction disc 3 to synchronously rotate so as to traction a rope clamped in the traction groove 4.

[0050] As Figures 1 to 3As shown, the first traction disc 2 is driven by the first driving member and rotatably supported on the machine box 1, and the end of the first traction disc 2 away from the machine box 1 is provided with a first taper surface 21. The second traction disc 3 is coaxially arranged on the side of the first traction disc 2 away from the machine box 1, and is in transmission connection with the first driving member and can rotate synchronously with the first traction disc 2, and the end of the second traction disc 3 towards the first traction disc 2 is provided with a second taper surface 31. The converging sections of the first taper surface 21 and the second taper surface 31 are oppositely arranged, and together define an annular space extending in the circumferential direction and having a V-shaped cross section, which is used to accommodate the rope. A plurality of first clamping teeth 41 extending in the radial direction are uniformly distributed on the first taper surface 21 in the circumferential direction, and similarly, a plurality of second clamping teeth 42 extending in the radial direction are also uniformly distributed on the second taper surface 31 in the circumferential direction, and the plurality of first clamping teeth 41 and the plurality of second clamping teeth 42 are arranged in a staggered manner in the circumferential direction, that is, the projection of any first clamping tooth 41 in the circumferential direction is located between two adjacent second clamping teeth 42 from the axial perspective, and vice versa. When the rope is accommodated in the traction groove 4, the cylindrical surface thereof is simultaneously pressed against the side walls of the staggered first clamping teeth 41 and second clamping teeth 42, the first driving member is started to drive the first traction disc 2 and the second traction disc 3 to rotate synchronously, and the rotation torque is converted into circumferential friction force acting on the rope, thereby realizing smooth traction and conveying of the rope. The technical scheme of the present application increases the effective force points in the circumferential direction of the rope through the staggered engagement structure, and the load generated during the rope traction process is converted into radial pressure, forcing the clamping teeth to be embedded deeper into the surface of the rope. Therefore, when facing different diameter ropes, the traction groove 4 which is tapered inward in the radial direction can realize self-adaptive adaptation, that is, fully enveloping the thin rope and partially engaging the thick rope, which not only ensures the anti-slip holding force of the thin rope, but also avoids excessive extrusion damage to the thick rope, realizes wide range compatibility from thin and soft rescue rope to thick and hard hoisting belt, and improves the safety and applicability of the traction operation.

[0051] In order to realize precise traction control, the first driving member is preferably a high-power-density direct-current brushless servo motor, and the output shaft thereof is connected to the main transmission shaft of the first traction disc 2 through a set of planetary gear reducers. Of course, in addition to the above preferred scheme, according to different application scenarios and cost considerations, the first driving member can also be replaced by a brushed direct-current motor, a stepper motor or a hydraulic motor, and the corresponding transmission assembly can be adapted to a worm gear reducer, a harmonic reducer or a synchronous belt transmission mechanism. The above structures are mature technical means which can be routinely selected and replaced by those skilled in the art according to specific performance indicators, and their principles will not be further described.

[0052] In some specific embodiments of the present application, a rope protector 5 is further included, which is wrapped outside the traction groove 4, and is configured to prevent the rope from coming out of the traction groove 4.

[0053] It should be noted that the second traction disc 3 defined in the present application is essentially structured by the first taper surface 21 and the second taper surface 31 oppositely arranged to jointly form an open annular space extending in the circumferential direction and having a V-shaped or wedge-shaped cross section. In the dynamic working condition of the traction disc, especially when the rope tension is instantaneously relaxed, the rope is subjected to severe shaking or is accidentally impacted laterally, the rope has the possibility of being radially detached from the traction groove 4. As shown in Figure 1 The rope protector 5 is arranged across the outer edges of the first traction disc 2 and the second traction disc 3, forming a protective structure surrounding the opening of the second traction disc 3, which can physically shield and constrain the rope accommodated in the second traction disc 3 in the radial direction, thereby effectively preventing the rope from being accidentally radially detached from the second traction disc 3 due to shaking, relaxation or external force interference during the working process, and ensuring the continuity and safety of the traction operation.

[0054] In some specific embodiments of the present application, the rope protector 5 comprises a first connecting part 51 which is detachably arranged on the machine box 1, and a rope cover 52 which is rotatably connected to the machine box 1 at one end and rotatably connected to the first connecting part 51 at the other end. At least part of the rope cover 52 is adapted to the curvature of the outer edges of the first traction disc 2 and the second traction disc 3, and the rope cover 52 covers the outer edges of the first traction disc 2 and the second traction disc 3 to enclose the opening of the traction groove 4.

[0055] As shown in Figure 1 The lower end of the first connecting part 51 is detachably mounted on the machine box 1 through a quick-release buckle structure and located on the right side below the first traction disc 2. The rope cover 52 is at least partially in the form of 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, and is rotatably connected to the machine box 1 at one end and hingedly connected to the upper end of the first connecting part 51 at the other end. 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 and separates it from the machine box 1; then holds the first connecting part 51 or the rope cover 52 and rotates it in the counterclockwise direction until the rope cover 52 is completely opened and the second traction disc 3 below is fully exposed. At this time, the operator can easily wind and place the rope in the second traction disc 3 between the first traction disc 2 and the second traction disc 3. After completing the rope winding, rotate the rope cover 52 in the opposite direction so that it covers the radial outer edge of the second traction disc 3 again, and finally lock the quick-release buckle at the lower end of the first connecting part 51 with the corresponding interface on the machine box 1, i.e. quickly recover to the closed protective state. In the working state, after being closed and locked, the rope cover 52 is arranged across the outer edges of the first traction disc 2 and the second traction disc 3, and physically shields the rope accommodated in the second traction disc 3 in the radial direction, thereby effectively preventing the rope from being radially detached from the traction groove 4 during operation.

[0056] In another preferred embodiment, the rope guard 52 can be made of a plurality of independent arc-shaped guard segment units which are connected in sequence to form a foldable flexible guard curtain, wherein the shape and curvature of each guard segment unit are adapted to the profile of the corresponding local traction disc. The first guard segment unit is integrally connected to the machine case 1, and the last guard segment unit is detachably locked to the machine case 1 through the first connecting part 51.

[0057] Specifically, the first connecting part 51 is detachably connected to the machine case 1 by a spring buckle.

[0058] In some specific embodiments of the present application, in order to further optimize the rope path management and eliminate operation interference, a rope separator 6 is further included, which is fixedly arranged on the machine case 1 below the first traction disc 2 and at least partially extends into the traction groove 4, and is configured to separate the input section and the output section of the rope. As shown in Figure 4 The rope separator 6 is fixed to the machine case 1 and arranged below the first traction disc 2, with its upper end partially inserted into the opening area of the second traction disc 3 without contacting the rotating part. The rope separator 6 separates the space below the second traction disc 3 into two distinct and physically isolated channels, one for the input section carrying the load and the other for the output section releasing the rope. By such physical separation, the mutual beating, friction and even entanglement of the two rope strands of the input section and the output section during high-speed operation or shaking are prevented from the root, ensuring efficient power transmission and improving the operation stability of the system.

[0059] In some specific embodiments of the present application, the rope separator 6 includes a guide block 61, which is provided with a first guide arc surface 611 and a second guide arc surface 612. The first guide arc surface 611 is located on one end of the guide block 61 close to the rope output side of the traction groove 4, and is recessed away from the rope output side of the traction groove 4. The second guide arc surface 612 is located on one end of the guide block 61 close to the rope input side of the traction groove 4, and is recessed away from the rope input side of the traction groove 4.

[0060] As shown in 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] In some embodiments of the present application, an auxiliary pulley 8 is further included, which is rotatably arranged on the cabinet 1 and located at the input end side of the rope distributor 6, the axial direction of the auxiliary pulley 8 is parallel to the axial direction of the first traction disc 2, and the auxiliary pulley 8 is configured to isolate the lateral disturbance from the external rope source before the rope enters the traction groove 4, so that the rope is introduced at a constant angle.

[0070] As shown in Figure 1 and Figure 2 , the auxiliary pulley 8 is rotatably mounted on the cabinet 1 and located at the side of the rope distributor 6 close to the rope input end, and the axial direction of the auxiliary pulley 8 extends in the front-rear direction. The rim of the auxiliary pulley 8 is processed with a groove, which makes the auxiliary pulley become an axial limiting track pulley. After the input section of the rope is led out from the bunching hole 71, its path is first guided to deflect to the right by the second guide camber 612, and then is fitted and crimped in the groove of the auxiliary pulley 8, thereby introducing the rope to an upwardly inclined angle and simultaneously restricting the displacement of the rope in the front-rear direction. The lateral shaking of the rope caused by external load swing, personnel operation or environmental factors is first blocked and absorbed by the side wall of the groove when it is transmitted to the auxiliary pulley 8, and at the same time, the low rotation resistance of the auxiliary pulley 8 makes the pulling movement of the rope smooth, so that the lateral irregular movement is effectively isolated and dissipated. Therefore, no matter how the external input conditions fluctuate, the rope can smoothly enter the second traction disc 3 at the preset optimal attack angle, which fundamentally eliminates the jumping, beating and angle deviation caused by the inlet disturbance, and ensures the continuity and stability of the traction force transmission.

[0071] In some embodiments of the present application, the first traction disc 2 is drivingly connected with the first driving member through a spline shaft 22, the second traction disc 3 is sleeved on the spline shaft 22, the second traction disc 3 can slide along the axial direction of the spline shaft 22, and a fixed disc 32 is fixedly arranged at the end of the spline shaft 22 away from the first traction disc 2, a first elastic member 321 is arranged 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 towards the first traction disc 2.

[0072] As shown in Figure 7 , the first traction disc 2 and the second traction disc 3 are linked through a spline shaft 22 penetrating both, specifically, the spline shaft 22 is drivingly connected with the first driving member, the first traction disc 2 is matched with the spline shaft 22 through internal spline and is supported on the cabinet 1 through a bearing; the second traction disc 3 is matched with the spline shaft 22 through internal spline, and can freely slide along the axial direction of the spline shaft 22 while rotating synchronously with the shaft. A fixed disc 32 is fixedly arranged at the front end of the spline shaft 22, and a first elastic member 321 is installed between the fixed disc 32 and the second traction disc 3.

[0073] It should be noted that when a thinner rope than the design specification is used, the traction often slips due to insufficient clamping contact area and insufficient compression force, affecting efficiency and safety; while when a thicker rope is used, it may not be able to be smoothly loaded or may be excessively squeezed and damaged, or even cannot be loaded into the second traction disc 3 at all. This pickiness of the rope specification severely limits the adaptability and attendance rate of a single device in different tasks.

[0074] The technical solution of the present application introduces a floating adaptive constant force clamping system, that is, the pre-tightening force of the first elastic member 321 is always used to try to push the second traction disc 3 towards the first traction disc 2. When a smaller diameter rope is put in, the pre-tightening force is sufficient to make the two traction discs close tightly, and enough radial clamping force can be generated for thin ropes to effectively prevent slipping; when a larger diameter rope is put in, the rope itself will overcome part of the elastic force of the first elastic member 321 to push the second traction disc 3 away, thereby automatically widening the width of the second traction disc 3 to accommodate thick ropes. At this time, the first elastic member 321 is further compressed, and its rebound force also increases, ensuring that enough adaptive clamping force can be maintained for thick ropes. Based on the above structure, a single device can safely and efficiently adapt to a wider range of ropes of different diameters without the need to replace any parts, not only enhancing the operational flexibility and task response speed of the device, but also protecting the rope from damage caused by overpressure or underpressure through constant adaptive clamping force, ensuring reliable transmission of traction force under various loads.

[0075] Specifically, the first elastic member 321 is preferably a compression spring or a disc spring set to provide stable and small space-occupying pressure. These are mature technical means that can be flexibly selected according to specific performance requirements in the art, and the conventional details are not repeated here.

[0076] Further, in the field of automatic lifters, such devices need to meet two core working conditions when operating, one is in the loaded state, the traction disc must provide enough compression force to the rope to prevent slipping; the other is in the unloaded, standby or manual quick adjustment of the rope position, and the traction disc is expected to quickly release the rope to reduce the operating resistance and avoid unnecessary wear of the rope.

[0077] To respond to this extreme working condition, in some specific embodiments of the present application, a clutch mechanism 9 is further included, which is arranged on the machine box 1 and connected with the second traction disc 3, and is configured to drive the second traction disc 3 to move towards or away from the first traction disc 2. In the unloaded state, the clutch mechanism 9 remains standby, and once it detects that the rope is tensioned, it will drive the second traction disc 3 to move along the spline shaft 22 towards the first traction disc 2 to clamp the rope in the traction groove 4 between the two traction discs.

[0078] In some embodiments of the present application, the clutch mechanism 9 comprises a connecting cylinder 91 rotatably arranged in the machine box 1, the connecting cylinder 91 is sleeved on the spline shaft 22 and matched with the spline shaft 22 through internal spline, a locking sleeve 92 is fixedly arranged on the machine box 1, the locking sleeve 92 is sleeved on the outer side of the connecting cylinder 91 and connected with the connecting cylinder 91 through a bearing, and a second driving member 93 is arranged on the locking sleeve 92, the second driving member 93 is drivingly connected with the spline shaft 22, and the second driving member 93 is configured to drive the spline shaft 22 to move along the axial direction thereof to drive the second traction disc 3 to approach or move away from the first traction disc 2.

[0079] As shown in Figure 8 and Figure 9 , the spline shaft 22 is not completely axially fixed, but can slide in the connecting cylinder 91 within a limited range relative to the machine box 1 along the axial direction thereof. Specifically, the spline shaft 22 is arranged on the machine box 1 along the front-rear direction, the first traction disc 2 is matched with the front end of the spline shaft 22 through internal spline and supported on the machine box 1 through a bearing. The second traction disc 3 is sleeved on the spline shaft 22 through internal spline and located on the side away from the machine box 1 of the first traction disc 2, which can rotate synchronously with the spline shaft 22 and slide along the axial direction of the spline shaft 22. The connecting cylinder 91 is sleeved on the rear end of the spline shaft 22 and matched with the spline shaft 22 through internal spline, and the locking sleeve 92 is fixed on the machine box 1 and coaxially sleeved on the outer side of the connecting cylinder 91 through a set of bearings, the connecting cylinder 91 and the locking sleeve 92 do not transmit torque and 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 arranged on the locking sleeve 92 and can drive the spline shaft 22 to slide along the axial direction to drive the second traction disc 3 to approach or move away from the first traction disc 2.

[0080] When the device is in an idle state or the rope tension is below a set threshold, a release gap is maintained between the first traction disc 2 and the second traction disc 3, and the rope can slide freely in the traction groove 4, and the device is equivalent to a certain pulley; when the rope carries a load and the tension reaches or exceeds the set threshold, the second driving member 93 drives the spline shaft 22 and the second traction disc 3 fixedly connected therewith to move along the axial direction toward the first traction disc 2, and the conical surfaces of the two traction discs are closed, thereby radially compressing the rope accommodated in the traction groove 4 between the first clamping teeth 41 and the second clamping teeth 42 arranged in a staggered manner, and the device is automatically switched to a traction working mode.

[0081] It should be noted that the second driving member 93 can be flexibly configured according to specific working condition requirements, for example, a servo electric cylinder or a linear stepper motor, a gas cylinder or a hydraulic cylinder, etc. The trigger signal can be directly obtained from monitoring the rope state, for example, integrating a pressure sensor or a micro switch on the auxiliary pulley 8 to detect whether the rope tension exists, or setting an encoder or other non-contact detection element, and judging whether the rope is in a working tension state by monitoring the rotation state or displacement of the auxiliary pulley 8. The signals collected by the above-mentioned sensors can be transmitted to the control system, and after logical judgment, the second driving member 93 is driven to act, so as to realize the automatic and programmable switching from the "rope loose" to the "rope tight" working state, which will not be further described here.

[0082] In some specific embodiments of the present application, a trigger mechanism 10 is further included, which is in transmission connection with the clutch mechanism 9, and the trigger mechanism 10 is configured to drive the clutch mechanism 9 to act according to the change of the rope tension.

[0083] In some specific embodiments of the present application, the trigger mechanism 10 includes: an L-shaped guide slot 101 which is opened on the cylinder wall of the locking sleeve 92; a trigger swing lever 102 which is fixedly connected at one end with the connecting cylinder 91 and fixedly connected at the other end with the auxiliary pulley 8 through the L-shaped guide slot 101, the auxiliary pulley 8 being capable of swinging relative to the cabinet 1; and a second elastic member which is connected between the trigger swing lever 102 and the cabinet 1, and is configured to drive the trigger swing lever 102 to drive the auxiliary pulley 8 to approach the rope; wherein when the rope is in an empty load state, the second elastic member maintains the trigger swing lever 102 at a locking position of the L-shaped guide slot 101; when the rope is in a load state, the rope tension drives the auxiliary pulley 8 to swing, so as to drive the trigger swing lever 102 to move from the locking position of the L-shaped guide slot 101 to a release position, the movement of the trigger swing lever 102 triggers the second driving member 93 to act, and drives the second traction disc 3 to approach the first traction disc 2, so as to clamp the rope in the traction groove 4.

[0084] As Figure 8 and Figure 9As shown, the barrel wall of the locking sleeve 92 is machined with an L-shaped guide slot 101, wherein the L-shaped guide slot 101 has a longitudinal groove extending along the axis of the locking sleeve 92 and a transverse groove extending along the circumference of the locking sleeve 92, the end of the transverse groove is a locking position, and the junction of the transverse groove and the longitudinal groove is a release position. One end of the trigger swing lever 102 is fixedly connected with the connecting barrel 91, and the other end is fixedly connected with the auxiliary pulley 8 outside the cabinet 1 through the L-shaped guide slot 101. The second elastic member acts between the trigger swing lever 102 and the cabinet 1, or the second elastic member acts between the trigger swing lever 102 and the locking sleeve 92, and the second elastic member can apply pressure to the auxiliary pulley 8 to make the auxiliary pulley 8 have a tendency to approach the rope. In this embodiment, the second driving member 93 can be selected as a third elastic member, which is installed between the connecting barrel 91 and the locking sleeve 92 and applies a pulling force to the connecting barrel 91 to make the second traction disc 3 have a tendency to approach the first traction disc 2.

[0085] When the rope is unloaded, the second elastic member makes the trigger swing lever 102 be pressed in the locking position of the L-shaped guide slot 101, at this time, the trigger swing lever 102 mechanically blocks the axial pulling force that the third elastic member tries to release, and the whole mechanism is in an energy storage state. Once the rope is loaded, for example, after manually adjusting the position of the rope, the rope is tensioned by pulling and stretching, the tension of the rope overcomes the force of the second elastic member and drives the trigger swing lever 102 and the auxiliary pulley 8 to swing back, which makes the rod body of the trigger swing lever 102 disengage from the transverse groove of the L-shaped guide slot 101 and slide into the longitudinal groove from the release position. At the moment when the locking is released, the energy accumulated by the third elastic member is suddenly released, pulling the spline shaft 22 and the second traction disc 3 connected therewith, and moving rapidly in the axial direction towards the first traction disc 2, so as to clamp the rope in the traction groove 4.

[0086] Further, an external reset handle, pull ring or push rod can be provided, which is connected with the connecting barrel 91 or the trigger swing lever 102 through a simple connecting rod. After the brake occurs, the operator manually operates the handle to overcome the residual force of the energy storage third elastic member, pushes the connecting barrel 91 back to the initial position, drives the trigger swing lever 102 to retreat along the longitudinal groove of the L-shaped slot, and manually rotates the swing lever or the connecting barrel 91 to make it re-clamp into the locking position of the transverse groove. As an enhancement of the basic scheme, an electric push rod or a micro motor can be added without changing the above reset logic, and after the brake occurs, the electric part is started by a button or a controller to perform the action of pushing and rotating the connecting barrel 91 back.

[0087] In specific embodiments of the present application, the second elastic member is typically a torsion spring or a tension spring, which aims to provide a reliable swing reset force to ensure the sensitive response of the trigger mechanism 10 to the disappearance of tension; the third elastic member is preferably a compression spring, which drives the connection cylinder 91 to move the spline shaft 22 in the axial direction, and then makes the second traction disc 3 close to the first traction disc 2, having the characteristics of fast response and excellent fatigue life. The specific model and parameters of the above-mentioned elastic elements can be designed and selected according to the actual load level, safety standards and size requirements, which are common technical means that can be implemented by those skilled in the art according to public standards and manuals, and will not be expanded here.

[0088] The present application also discloses a load hanging device, comprising a portable automatic lifter and a hanger, the machine box 1 is connected with the hanger, and the hanger is configured to fix the machine box 1 on an external support structure or a load. Specifically, the machine box 1 of the portable automatic lifter is connected with the hanger in a detachable or fixed manner, and the hanger is configured to stably install or hang the entire portable automatic lifter on various external support structures or loads, thereby forming a complete hoisting workstation in actual application. In some specific embodiments of the present application, the hanger can adopt a metal frame with a standard hook or a U-shaped bolt, which can be directly hung on the cross bar of the scaffold, the roof truss, the edge of the window sill or the rail of the special operation platform. In this way, the portable automatic lifter can be quickly deployed at the work point in the high altitude or the limited space through the hanger. This modular design greatly expands the application scenarios of the present application, so that it can not only be used as a handheld device, but also be used as a fixed or semi-fixed power source integrated into a more complex hoisting or rescue system.

[0089] The working principle of the portable automatic lifter of the present application will be further described below by the specific structure of Figures 1 to 9 .

[0090] Referring to Figures 1 to 6 , the operator passes the rope through the bunching hole 71 on the limiting piece 7 and winds it in the second traction disc 3 formed by the facing conical surfaces of the first traction disc 2 and the second traction disc 3. After starting the device, the first driving member drives the first traction disc 2 and the second traction disc 3 to rotate synchronously, and the rope is accommodated in the traction groove 4, and its cylindrical surface is engaged with the first clamping teeth 41 and the second clamping teeth 42 arranged on the two conical surfaces at the same time. In the rotating process, the first clamping teeth 41 and the second clamping teeth 42 exert a circumferential friction force on the rope, forming a traction force to lift or lower the load. The rope distributor 6 located below the traction disc physically separates the input section and the output section of the rope to prevent them from winding around each other, and the rope protector 5 is wrapped around the outer edge of the traction groove 4 to prevent the rope from accidentally coming out during operation.

[0091] In a further preferred embodiment, the first traction disc 2 and the second traction disc 3 are connected by a spline shaft 22, the second traction disc 3 is arranged to be axially slidable along the spline shaft 22, and is subjected to a constant pre-tightening force by a first elastic member 321, so as to have a tendency to approach the first traction disc 2. When ropes of different diameters are used, the gap between the first traction disc 2 and the second traction disc 3 can be automatically adjusted. Specifically, for thin ropes, the pre-tightening force drives the two discs to approach each other, ensuring sufficient clamping force to prevent slipping; for thick ropes, the size of the rope itself overcomes part of the pre-tightening force, pushing the second traction disc 3 away to widen the second traction disc 3, while the first elastic member 321 is further compressed, feeding back greater clamping force to reliably clamp the thick rope. This process is fully adaptive and does not require manual intervention, achieving safe and efficient compatibility of a single device for a wide range of rope diameters.

[0092] In a further preferred embodiment, in the state of the rope being unloaded, the second elastic member compresses the auxiliary pulley 8, so that the trigger swing lever 102 linked with the auxiliary pulley 8 is clamped in the locking position of the L-shaped guide groove 101 of the locking sleeve 92. Once the rope is loaded, the tension generated by the rope drives the second elastic member to drive the trigger swing lever 102 to swing, so that it slides into the release position from the locking position. After the lock is released, the second driving member 93 drives the spline shaft 22 to drive the second traction disc 3 to approach the first traction disc 2, so as to compress the rope in the traction groove 4 on the first traction disc 2. The device is thus automatically switched to the traction working mode.

[0093] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0094] Of course, the present application is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present 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). A clutch mechanism (9) is provided on the chassis (1), the clutch mechanism (9) is connected to the second traction disc (3), and 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). Triggering mechanism (10) is connected to clutch mechanism (9) in a transmission manner. Triggering mechanism (10) is configured to drive clutch mechanism (9) to operate according to rope tension change. When the rope is under load, triggering mechanism (10) drives clutch mechanism (9) to operate, thereby driving second traction disc (3) to approach first traction disc (2) to clamp the rope in traction groove (4); The first traction disc (2) is connected to the first drive component via a spline shaft (22). The second traction disc (3) is mounted on the spline shaft (22) and 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).

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 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 the axial direction of the spline shaft (22) so as to drive the second traction disc (3) to move closer to or away from the first traction disc (2).

11. The portable automatic lifting device according to claim 10, 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).

12. A load-bearing device, characterized in that, The portable automatic lifter and the hanger included in any one of claims 1 to 11, 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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