Portable high-altitude operation lifter

Abstract

The invention provides a portable high-altitude operation lifter which mainly comprises a rack, a rope winding shaft, a driving device, a rope arranging device, a rope outlet device, a handheld rope buckle device and a control rocker arm, the driving device is used for providing lifting power and has a self-locking function and a clutch function, and the control rocker arm is used for controlling the rope arranging device, the rope outlet device, the handheld rope buckle device and the control rocker arm. The self-locking function can stop sliding down when the bearing is too heavy, and the clutch function can manually descend after the power is damaged; the rope arranging device is used for neatly arranging ropes on a rope winding shaft, the rope arranging function is achieved through a one-way screw, the rope arranging process is smooth, and the tooth clamping condition cannot occur; the rope outlet device can prevent the rope from loosening to influence the rope arrangement effect, and can identify whether the rope is loose; the hand-held rope buckle device simultaneously has the hand-held function and the locking function, can be stored in the machine shell, and is good in hiding performance and high in attractiveness; the control rocker arm is used for manually controlling the portable high-altitude operation lifter, so that a user can flexibly operate the lifter at high altitude conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, in particular to a portable aerial work lifter. Background Art

[0002] The existing portable aerial work lift generally includes a motor, a rope shaft driven by the motor, and a rope wound on the rope shaft; the rope is retracted and released by rotating the rope shaft to realize the lifting of people or objects; as disclosed in Chinese patent CN112551413A, the driving device of the portable aerial work lift includes a main shaft, an external rotation drive, a braking output mechanism and a first braking mechanism for braking the main shaft; the external rotation drive includes an inner stator sleeved on the main shaft and an outer rotor sleeved on the outer periphery of the inner stator; the end of the main shaft passing through the inner stator is provided with an inner gear center wheel with an inner gear ring; the braking output mechanism includes a planet carrier A, a driving ring, an inner ring member and a first braking mechanism arranged coaxially with the main shaft. Outer ring; the planet carrier A is provided with a coaxial output shaft and a plurality of planetary gears A arranged along the circumference of the output shaft on the end face facing away from the main shaft; the drive ring and the inner ring are sleeved on the output shaft in sequence, the inner ring is provided with a sun gear A passing through the drive ring on the end face facing the planetary gear A, the sun gear A, the plurality of planetary gears A and the inner gear center wheel form a planetary gear train structure; the outer ring is embedded in the outer periphery of the inner ring and forms a roller-type one-way clutch structure with it; the drive ring is fixedly connected to the outer rotor, the drive ring is provided with a drive plug-in on the end face facing the inner ring for unlocking the outer ring and the inner ring and driving the inner ring to rotate. Among them, it can cooperate with each other through the brake output mechanism, the outer rotor of the external rotation drive and the inner gear center wheel on the main shaft to self-lock, and jointly bear the torque of the lifting object, so as to avoid the external rotation drive from bearing too much load.

[0003] However, after the braking output mechanism, the outer rotor of the external rotary drive and the inner gear center wheel on the main shaft cooperate with each other to self-lock, the outer rotor is required to drive the driving plug-in to move the roller when unlocking; when the weight of the lifted object is large, the torque applied to the rope winding shaft and the inner ring is large, so that the locking force between the inner ring and the outer ring is large, and the outer rotor needs to provide a large driving force for the driving plug-in so that the driving plug-in can move the roller to unlock; in addition, since the torque applied to the rope winding shaft and the inner ring is large, the rotation speed of the inner ring is fast. When the orbital speed of the driving plug-in is lower than the rotation speed of the inner ring, after the driving plug-in moves the roller to unlock, the inner ring will rotate rapidly and self-lock with the roller, resulting in a continuous jamming of moving and stopping. Summary of the invention

[0004] In view of this, the present invention proposes a lightweight aerial work lifter, the purpose of which is to reduce the unlocking force for releasing the self-locking function and avoid jamming on the basis of realizing the stable self-locking function of the driving device.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A portable aerial work lifter, comprising:

[0007] A rope winding shaft, the rope winding shaft is rotatably arranged on the frame, the rope winding shaft is hollow inside, a driving device for driving the rope winding shaft to rotate is arranged inside the rope winding shaft, and a rope is wound on the rope winding shaft;

[0008] The driving device comprises:

[0009] A coaxially arranged main shaft, an outward-rotating motor, a one-way bearing and a self-locking assembly;

[0010] The outer rotor motor comprises an inner stator fixedly sleeved on the main shaft and an outer rotor rotatably arranged on the outer periphery of the inner stator;

[0011] The one-way bearing comprises an inner ring body fixedly sleeved on the main shaft and an outer ring body unidirectionally rotatably arranged on the outer periphery of the inner ring body;

[0012] The self-locking assembly includes a driving ring, a roller and a driven body;

[0013] The driving ring is sleeved on the outer periphery of the one-way bearing, and the driving ring is fixedly connected to the outer rotor; the inner wall of the driving ring is concavely provided with a plurality of grooves, and the bottom surface of the groove is an inclined surface inclined along the circumferential direction, so that two sides of the groove form a relatively narrow part and a relatively wide part respectively;

[0014] The roller is movably arranged in the groove;

[0015] The driven body and the driving ring are coaxially arranged in sequence, and a plug post is arranged at one end of the driven body close to the driving ring; the plug post is inserted into the groove of the driving ring, and the plug post is located between the roller and the relatively wide part; the driven body is connected to the rope winding shaft;

[0016] The diameter of the roller is smaller than the relatively wide portion, but greater than or equal to the relatively narrow portion; when the inner wall of the relatively wide portion, the plug post and the roller are in contact with each other in sequence, the roller is separated from the inclined surface and / or the outer peripheral wall of the outer ring body; the rotation direction of the outer ring body on the inner ring body is from the relatively narrow portion to the direction where the relatively wide portion is located;

[0017] A rope arranging device, the rope arranging device is used to arrange the ropes regularly on the rope winding shaft;

[0018] A rope-out device, the rope-out device being arranged at the opening at the top of the housing, and the rope-out device being used to provide a traction force for the rope to extend out of the housing;

[0019] A hand-carrying rope buckle device, which is used to buckle the rope and provide a hand-carrying structure;

[0020] A frame, wherein a safety strap is provided on the frame;

[0021] The casing is arranged on the frame, and the top of the casing is provided with an opening for the rope to extend out.

[0022] As a further optional solution, the driving device further comprises a speed reduction mechanism, an output gear is provided at one end of the driven body away from the driving ring, and the output gear is drivingly connected to the speed reduction mechanism;

[0023] The driven body comprises a first rotating body and a second rotating body coaxially arranged along the axial direction of the main shaft, the first rotating body and the second rotating body are fixedly connected and a cavity is formed therebetween, the output gear is coaxially rotatably connected to the first rotating body, and a clutch transmission member and a first elastic member are arranged in the cavity;

[0024] The clutch transmission member includes a transmission shaft and a transmission plate fixedly connected to one end of the transmission shaft, and the transmission shaft is fixedly sleeved in the output gear so that the transmission shaft and the output gear are circumferentially fixed;

[0025] The first elastic member provides elastic force for the transmission disc, so that a compression fit is formed between the transmission disc and the first rotating body;

[0026] A hollow channel is formed in the main shaft, and a manual operating rod is slidably sleeved in the channel. The channel is connected to the cavity, and the manual operating rod is used to reduce the elastic force provided by the first elastic member to the transmission disk; when the first elastic member provides the maximum elastic force to the transmission disk, the transmission disk and the first rotating body are relatively fixed.

[0027] As a further optional solution, a pressure plate is further provided in the cavity of the driving device, the pressure plate is located between the transmission plate and the second rotating body, a first brake pad is provided between the transmission plate and the first rotating body, and a second brake pad is provided between the transmission plate and the pressure plate;

[0028] The first elastic member includes a substrate and a spring sheet extending radially from the center of the substrate, the spring sheet is inclined in the direction of the first rotating body, the free end of the spring sheet abuts against the pressure plate, the middle part of the spring sheet is connected to the second rotating body through a fixing pin, the manual operating rod squeezes the substrate to move the free end of the spring sheet away from the first rotating body; a second elastic member is provided in the channel to drive the manual operating rod away from the pressure plate.

[0029] As a further optional solution, a rope arranging device is also included, and the rope arranging device includes:

[0030] A screw rod, on which a one-way thread groove is provided, and is arranged parallel to the rope winding shaft;

[0031] A slide, through which the rope on the rope winding shaft passes, the slide is threadedly connected to the screw, and the slide can move axially but is fixedly arranged on the screw along the circumferential direction;

[0032] The first transmission path is composed of an odd number of gears connected in sequence, the gear at one end of which is connected to the screw rod, and the gear at the other end is defined as a first steering gear;

[0033] The second transmission path is composed of a plurality of gears connected in sequence, the gear at one end of which is connected to the screw rod, and the gear at the other end is defined as a second steering gear;

[0034] a direction-changing drive mechanism, comprising a steering drive gear capable of switching between the first steering gear and the second steering gear to drive one of them; the steering drive gear rotates synchronously with the rope winding shaft;

[0035] The direction-changing drive mechanism further comprises:

[0036] A direction-changing planetary carrier, on which a plurality of steering drive gears are arranged, and the steering drive gears serve as planetary gears on the direction-changing planetary carrier;

[0037] A rope-arranging synchronous shaft rotates synchronously with the rope-winding shaft, and a direction-changing sun gear is sleeved on the shaft, and the direction-changing sun gear is meshed with the steering drive gear;

[0038] An intermittent transmission mechanism, which is used to realize intermittent transmission between the rope-arranging synchronous shaft and the direction-changing planetary carrier;

[0039] Wherein, a buffer mechanism is arranged between the rope arranging synchronous shaft and the direction-changing sun gear, and the buffer mechanism comprises at least one transmission groove recessed on the inner wall of the direction-changing sun gear, at least one transmission block convexly arranged on the outer wall of the rope arranging synchronous shaft, and an elastic buffer;

[0040] The transmission block is arranged in the transmission groove, and in an initial state, a buffer space is formed between two side walls of the transmission block in the circumferential direction and two side walls of the transmission groove in the circumferential direction;

[0041] The elastic buffer is used to apply an elastic pre-force to the direction-changing sun gear so as to restore the transmission block to a position in an initial state.

[0042] As a further optional solution, the inner hole of the direction-changing sun gear includes a transmission hole section and a buffer hole section in sequence along the axial direction;

[0043] The transmission groove is arranged in the transmission hole section;

[0044] The inner wall of the buffer hole section is concavely formed with a buffer guide groove, and the buffer guide groove includes two guiding inclined surfaces; the edges of the two guiding inclined surfaces that are away from each other intersect with the inner wall of the buffer hole section, and the edges of the two guiding inclined surfaces that are close to each other intersect to form an abutting concave position;

[0045] The rope arranging synchronous shaft is provided with a radially opened assembly hole;

[0046] The elastic buffer member includes a top ball slidably arranged in the assembly hole and an eighth elastic member for driving the top ball away from the axis of the rope arrangement synchronization shaft, and the top ball rolls and abuts against the guide inclined surface of the buffer guide groove;

[0047] In an initial state, the top ball is located at the abutment recess of the buffer guide groove.

[0048] As a further optional solution, it also includes a casing and a rope-out device, wherein the casing cover is arranged on the frame, the top of the casing is provided with an opening for the rope to extend out, and the rope-out device is arranged at the opening at the top of the casing;

[0049] The rope-discharging device comprises:

[0050] A housing, a guide rope assembly, a rope tightening assembly, a rope output motor and a first sensor;

[0051] The housing is arranged on the frame, and a rope inlet end and a rope outlet end are arranged on the housing;

[0052] The guide rope assembly includes at least one driving guide wheel, at least one driven guide wheel and a first elastic member, wherein the driving guide wheel is rotatably arranged on the housing, and the driven guide wheel is movably arranged on the housing along a specified path, and a first rope passage for the rope to pass through is formed between the outer peripheral wall of the driving guide wheel and the outer peripheral wall of the driven guide wheel, and the third elastic member is used to push the driven guide wheel to approach the driving guide wheel;

[0053] The rope tightening assembly is located at a side of the guide rope assembly close to the rope feed end, and the rope tightening assembly includes a guide column, a movable seat and a fourth elastic member; the movable seat is slidably arranged on the guide column, and a second rope passing channel is arranged on the movable seat, and the movable seat is configured to move in a first direction on the guide column under the force of the taut rope, and the fourth elastic member is used to apply an elastic force to the movable seat to move in a second direction on the guide column, and the first direction and the second direction are two opposite directions in the length direction of the guide column;

[0054] The rope output motor is transmission-connected to the driving guide wheel;

[0055] The first sensor is used to detect the position of the moving seat on the guide rod, and the first sensor is electrically connected to the driving device.

[0056] As a further optional solution, the rope-discharging device further includes a second sensor, a third sensor and a fourth sensor;

[0057] The second sensor is fixed on the housing, and a second sensed member is arranged outside the driven guide wheel; when the driven guide wheel approaches the driving guide wheel to a certain distance, the second sensor senses the second sensed member;

[0058] The third sensor is fixed on the housing, and the third sensor is electrically connected to the rope-discharging motor; when the driven guide wheel is away from the driving guide wheel to a certain distance, the third sensor senses the second sensed member, and the third sensor triggers the rope-discharging motor to stop working;

[0059] The fourth sensor is arranged at the rope outlet end of the shell, and a third sensed component is arranged at the end of the rope. The fourth sensor is used to sense the third sensed component. When the fourth sensor senses the third sensed component, the fourth sensor triggers the driving device to stop working.

[0060] As a further optional solution, a hand-carrying cord lock device is also included, and the hand-carrying cord lock device includes:

[0061] A handheld unit, a lock reset unit, and an unlocking unit;

[0062] The frame is provided with a first slideway;

[0063] The portable unit comprises a portable handle, a connecting arm is connected to the portable handle, a rope lock assembly is connected to one end of the connecting arm away from the portable handle, and a rope fixing assembly for connecting a rope is arranged on the portable handle; the rope lock assembly and at least part of the connecting arm are slidably arranged in the first slideway;

[0064] The lock reset unit is slidably disposed in the first slideway, and the lock reset unit includes a sliding base, on which a lock mechanism and a fifth elastic member are disposed, the lock mechanism is snap-connected with the rope lock assembly, and the fifth elastic member is used to provide a force for the sliding base to move toward the bottom end of the first slideway;

[0065] The unlocking unit is used to disengage the locking mechanism and the cord lock assembly.

[0066] As a further optional solution, the rope lock assembly includes a lock hook, a lock hole is formed in the lock hook, a side opening for the rope to enter is provided on one side of the lock hole, and a blocking piece for blocking the side opening is hinged on the lock hook;

[0067] The lock mechanism comprises a lock tongue, the middle part of which is rotatably connected to the sliding base through a hinge shaft, a hook portion for hooking the lock hole of the cord lock assembly is arranged on the side of the first end of the lock tongue, and a prying portion is formed on the second end of the lock tongue; a lock torsion spring for driving the hook portion to approach the cord lock assembly is arranged on the hinge shaft;

[0068] The unlocking unit is used to squeeze the prying portion to make the hook portion disengage from the lock hole;

[0069] The side surface of the first slideway is provided with an escape hole for the locking tongue to extend out.

[0070] As a further optional solution, a second slideway having the same length direction as the first slideway is provided on the sliding base, the second slideway is provided with an opening at one end close to the rope lock assembly, a top block is slidably provided in the second slideway, and a sixth elastic member for pushing the top block close to the rope lock assembly is also provided in the second slideway; a limit block having a width greater than the opening of the second slideway is provided at one end of the top block away from the opening of the second slideway;

[0071] When the top block is located in the second slideway at the extreme position close to the cord lock assembly, the position of the hook portion of the locking tongue is staggered from the locking hole and corresponds to the outer wall of the locking hook.

[0072] Compared with the prior art, the portable aerial work lifter of the present application has at least the following advantages:

[0073] Beneficial effects:

[0074] The driving device in the portable aerial work lifter can achieve self-locking by making the driven body unable to rotate when the driving ring is stationary through the cooperation between the driving ring, roller, driven body and one-way bearing; in the self-locking state, the main shaft, the external rotating motor, the one-way bearing and the self-locking assembly all share the torque to prevent the external rotating motor from bearing the load alone; and when unlocking, there is no need to turn the roller, the external rotor drives the driving ring to rotate to unlock, and the unlocking force requirement is low; in addition, there will be no jamming when the driving ring rotates. Compared with existing heavy lifting equipment, the portable aerial work lifter can be worn on the human body and has better portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 It is a structural schematic diagram of a portable aerial work lifter of the present invention;

[0076] Figure 2 It is a schematic diagram of the internal structure of a portable aerial work lifter of the present invention;

[0077] Figure 3 It is an exploded schematic diagram of the driving device and the rope winding shaft of the present invention;

[0078] Figure 4 Schematic diagram of the explosion of the driving device of the present invention

[0079] Figure 5 is a schematic cross-sectional view of a driving device of the present invention;

[0080] Figure 6 yes Figure 5 Schematic cross-sectional view of AA in the figure;

[0081] Figure 7 is an exploded schematic diagram of the self-locking assembly of the drive device;

[0082] Figure 8 is an exploded schematic diagram of a drive ring of a drive device;

[0083] Fig. 9 yes Figure 5 A schematic diagram of a structure in which a protective sleeve, an external rotating motor and a reduction mechanism are hidden;

[0084] Fig.10 is a schematic structural diagram of the first elastic member;

[0085] Fig.11 It is a structural schematic diagram of the rope discharging device of the present invention being arranged on a frame;

[0086] Fig.12 It is a structural schematic diagram of the rope discharging device of the present invention;

[0087] Fig.13It is a schematic diagram of the structure of the guide rope assembly and the tightening rope assembly in the rope discharging device;

[0088] Fig.14 It is an exploded schematic diagram of the guide rope assembly and the tightening rope assembly in the rope delivery device;

[0089] Fig.15 It is a structural schematic diagram of the rope tightening assembly in the rope discharging device;

[0090] Fig.16 is a schematic structural diagram of an embodiment of the present invention in which the second sensor and the third sensor are arranged outside the first driven guide wheel;

[0091] Fig.17 is a schematic structural diagram of an embodiment of the present invention in which the second sensor and the third sensor are arranged on the outer side of the second driven guide wheel;

[0092] Fig.18 It is a schematic diagram of the coordination between the rope-out device and the rope (the rope is taut);

[0093] Fig.19 It is a schematic diagram of the coordination between the rope-out device and the rope (rope slack);

[0094] Fig. 20 It is a structural schematic diagram of the hand-held rope buckle device of the present invention;

[0095] Fig.21 It is a schematic diagram of the structure of the hand-held unit in the hand-held rope buckle device being separated from the frame;

[0096] Fig. 22 It is an exploded schematic diagram of the frame, the portable unit, and the lock reset unit in the portable rope lock device;

[0097] Fig.23 is a schematic cross-sectional view of a hand-carrying rope buckle device;

[0098] Fig.24 It is a schematic diagram of the structure of the handheld unit and the lock reset unit in the locked state;

[0099] Fig.25 It is a schematic diagram of the structure of the handheld unit and the lock reset unit in the unlocked state;

[0100] Fig.26 is a schematic diagram of the cooperation between the guide groove in the first slideway and the first elastic member;

[0101] Fig. 27 It is an exploded schematic diagram of the portable unit;

[0102] Fig.28 is a perspective schematic diagram of a portable unit;

[0103] Fig.29 yes Fig.28 Cross-sectional view of the middle BB;

[0104] Fig.30 It is an exploded schematic diagram of the rope fixing assembly in the hand rope lock device;

[0105] Fig.31 It is a schematic diagram of the portable unit and the rope loop fixed;

[0106] Fig.32 It is a structural schematic diagram of the rope arrangement device of the present invention;

[0107] Fig.33 is a side view schematic diagram of the rope arrangement device;

[0108] Fig.34 yes Fig.33 Schematic cross-sectional view of CC;

[0109] Fig.35 This is an exploded diagram of the rope arrangement device;

[0110] Fig.36 It is an exploded schematic diagram of the intermittent transmission mechanism in the rope arrangement device;

[0111] Fig.37 Schematic diagram of an exploded view of a phase-changing sun gear and a rope-arranging synchronous shaft in an embodiment of the present invention;

[0112] Fig.38 It is a schematic diagram of the axial matching between the phase-changing sun gear and the rope-arranging synchronous shaft;

[0113] Fig.39 yes Fig.38 Schematic cross-sectional view of the middle DD;

[0114] Fig.40 yes Fig.39 Schematic cross-sectional view of EE (the top ball is located in the abutment concave position);

[0115] Fig.41 yes Fig.39 Schematic cross-sectional view of EE (the state where the top bead and the abutment recess are offset);

[0116] Fig.42 It is a transmission coordination diagram of the intermittent output member, the initial output gear, the first intermittent transmission body and the second intermittent transmission body in the embodiment of the present invention;

[0117] Fig.43 It is a structural schematic diagram of a braking mechanism provided on a rope winding shaft;

[0118] Fig.44 It is a cross-sectional schematic diagram of the control rocker arm connected to the main shaft through the spiral push rod.

[0119] In the figure, 100, rope winding shaft; 200, frame; 210, first slideway; 220, avoidance hole; 230, guide groove; 231, guide surface; 300, rope; 400, housing; 500, safety strap.

[0120] A0, driving device; A1, main shaft; A11, channel; A12, fixed plate; A121, air inlet; A122, air outlet; A13, second elastic member; A2, external rotating motor; A21, inner stator; A22, outer rotor; A3, one-way bearing; A31, inner ring body; A32, outer ring body; A4, self-locking component; A41, driving ring; A411, groove; a, inclined surface; b, relatively narrow part; c, relatively wide part; A412, fixed sleeve; A4121, partition; A4122, air guide hole; A413, transmission steel ring; A414, air guide member; A4141, air guide blade; A42 , roller; A43, driven body; A431, plug column; A432, output gear; A433, first rotating body; A4331, locking bolt; A434, second rotating body; A435, clutch transmission member; A4351, transmission shaft; A4352, transmission plate; A4353, first brake pad; A4354, second brake pad; A436, first elastic member; A4361, base plate; A4362, spring; A4363, fixing pin; A437, pressure plate; A4371, limiting groove; A438, cavity; A5, speed reduction mechanism; A6, manual operating lever; A7, protective sleeve; d, wind guide gap.

[0121] B0, rope discharging device; B1, housing; B11, rope discharging end; B12, rope inlet end; B13, transmission shaft; B2, rope guide assembly; B21, active guide wheel; B21 a, first active guide wheel; B21 b, second active guide wheel; B22, driven guide wheel; B22a, first driven guide wheel; B22b, second driven guide wheel; B23, third elastic member; B24, second sensed member; B25, connecting rod; B26, second adjusting member; B3, rope tightening assembly; B31, guide column; B32, moving seat; B33, fourth elastic member; B34, first adjusting member; B35, positioning guide wheel; B36, first sensed member; B4, rope discharging motor; B5, first sensor; B6, second sensor; B7, third sensor; B8, fourth sensor; e, first rope passing channel; f, second rope passing channel.

[0122] C0, hand-held rope buckle device; C1, hand-held unit; C11, hand-held handle; C12, connecting arm; C13, rope buckle assembly; C131, lock hook; C132, lock hole; C133, baffle; C14, rope fixing assembly; C141, rope fixing base; C1411, rope release groove; C1412, rope hole; C1413, rope entry hole; C1414, rope pressing channel; C142, rope pressing member; C1421, rope pressing drum; C1422, convex column; C2, lock buckle reset unit; C21, sliding base body; C211, second slide; C212, top block; C2121, limit block; C213, sixth elastic member; C22, locking mechanism; C221, lock tongue; C2211, hook; C2212, prying part; C2213, matching inclined surface; C222, hinge axis; C223, locking torsion spring; C23, fifth elastic member; C231, spiral elastic body; C232, elastic arm; C3, unlocking unit; C31, unlocking button; C32, connecting rod assembly; C33, seventh elastic member.

[0123] D0, rope arrangement device; D1, screw rod; D2, slide; D21, rope guide frame; D22, rope arrangement wheel; D3, first transmission path; D31, first steering gear; D4, second transmission path; D41, second steering gear; D5, direction-changing drive mechanism; D51, steering drive gear; D52, direction-changing planetary carrier; D53, rope arrangement synchronization shaft; D531, transmission block; D532, assembly hole; D54, direction-changing sun gear; D54a, transmission hole section; D54b, buffer hole section; D541, transmission groove; D542, buffer guide groove; D542a, guide slope; D542b, abutment recess ; D55, intermittent transmission mechanism; D551, intermittent output member; D552, initial output gear; D553, first intermittent transmission body; D5531, first gear meshing portion; D5532, intermittent driven portion; D554, second intermittent transmission body; D5541, second gear meshing portion; D5542, intermittent driving portion; D555, protective shell; D5551, limit shaft; D56, buffer mechanism; D561, elastic buffer; D5611, limit cylinder; D5612, eighth elastic member; D5613, top ball; D562, buffer space; G, first angle; H, second angle.

[0124] E0, control rocker arm; E1, brake mechanism; E2, screw push rod. DETAILED DESCRIPTION

[0125] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0126] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0127] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0128] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0129] refer to Figure 1-3 The present invention shows a portable aerial work lifter, which includes a frame, on which a rotatable rope winding shaft is arranged, the rope winding shaft is hollow inside, a driving device for driving the rope winding shaft to rotate is arranged inside the rope winding shaft, and a rope is wound on the rope winding shaft; wherein, the frame is provided with safety straps, such as shoulder straps, waist straps, leg straps, etc., so that the user can wear the portable aerial work lifter on the body, drive the rope winding shaft to rotate through the driving device, so that the rope is retracted or released, thereby realizing high-altitude lifting.

[0130] In addition, the portable aerial work lifter can be further provided with functional units such as a rope-arranging device, a rope-discharging device, and a hand-held rope buckle device. The functions of the driving device, the rope-arranging device, and the rope-discharging device can be understood from the prior art, such as Chinese patents with publication numbers CN112551413A, CN110745725A, and CN216125089U; and the present invention improves one or more parts thereof. The driving device, the rope-arranging device, the rope-discharging device, the hand-held rope buckle device, and other functional units of the present invention are introduced one by one below, so as to understand the advantages of these functional units over the prior art.

[0131] Regarding the driving device of the present invention:

[0132] refer to Figure 3-10 , the driving device of the present invention comprises a coaxially arranged main shaft A1, an outward-rotating motor A2, a one-way bearing A3 and a self-locking assembly A4;

[0133] like Figure 4 As shown, the outer rotor motor A2 includes an inner stator A21 fixedly sleeved on the main shaft A1 and an outer rotor A22 rotatably arranged on the outer periphery of the inner stator A21; the one-way bearing A3 includes an inner ring body A31 fixedly sleeved on the main shaft A1 and an outer ring body A32 unidirectionally rotatably arranged on the outer periphery of the inner ring body A31;

[0134] like Figure 4-6 As shown, the self-locking component A4 includes a driving ring A41, a roller A42 and a driven body A43; the driving ring A41 is sleeved on the outer periphery of the one-way bearing A3, and the driving ring A41 is fixedly connected to the outer rotor A22; the inner wall of the driving ring A41 is concavely provided with a plurality of grooves A411, and the bottom surface of the groove A411 is an inclined surface a inclined along the circumferential direction, so that a relatively narrow portion b and a relatively wide portion c are formed on both sides of the groove A411; the roller A42 is movably arranged in the groove A411; the driven body A43 and the driving ring A41 are coaxially arranged in sequence, and the driven body A43 is close to the driving ring A plug post A431 is provided at one end of A41; the plug post A431 is inserted into the groove A411 of the drive ring A41, and the plug post A431 is located between the roller A42 and the relatively wide portion c; wherein the diameter of the roller A42 is smaller than the relatively wide portion c, but greater than or equal to the relatively narrow portion b; when the inner wall of the relatively wide portion c, the plug post A431 and the roller A42 are abutted in sequence, the roller A42 is separated from the inclined surface a and / or the outer peripheral wall of the outer ring body A32; the rotation direction of the outer ring body A32 on the inner ring body A31 is from the relatively narrow portion b to the direction where the relatively wide portion c is located (such as Figure 5 The outer ring body A32 can only rotate in one direction, clockwise).

[0135] The driven body A43 is transmission-connected to the rope winding shaft 100 ; and the main shaft A1 is fixedly connected to the frame 200 .

[0136] Specifically, when the outer rotor motor A2 rotates, the outer rotor A22 rotates synchronously with the drive ring A41; Figure 6 From the perspective of the external rotating motor A2, when the rope is collected (raised), the driving ring A41 rotates clockwise, and the relatively narrow portion b of the groove A411 pushes the roller A42 to rotate clockwise. Since the outer ring body A32 of the one-way bearing A3 can rotate clockwise around the inner ring body A31, the roller A42 will not be stuck between the inclined surface a and the outer ring body A32. Then the roller A42 pushes the plug A431 to rotate clockwise, so that the driven body A43 also rotates clockwise, and the rope winding shaft 100 is driven by the driven body A43 to rotate clockwise, thereby realizing rope collection.

[0137] When the external rotating motor A2 drives the rope to be released (descended), the driving ring A41 rotates counterclockwise, and the inner wall of the relatively wide portion c of the groove A411 pushes the plug post A431, and the plug post A431 pushes the roller A42 when rotating counterclockwise. At this time, the inner wall of the relatively wide portion c, the plug post A431 and the roller A42 are abutted in sequence, and the position of the roller A42 is separated from at least one of the inclined surface a or the outer peripheral wall of the outer ring body A32, that is, the diameter of the roller A42 is smaller than the distance between the inclined surface a corresponding to the position of the roller A42 and the outer ring body A32, so that the roller A42 is not stuck between the inclined surface a and the outer ring body A32, so that the relatively wide portion c, the plug post A431 and the roller A42 can rotate counterclockwise, so that the driven body A43 and the rope winding shaft 100 also rotate counterclockwise, so that the rope winding shaft 100 releases the rope;

[0138] When the external rotating motor A2 is not started, under the action of the gravity of the lifted object and / or the deadweight of the lightweight aerial work lift, the rope winding shaft 100 will tend to let go of the rope, that is, the rope winding shaft 100, the driven body A43 and the plug post A431 will tend to rotate counterclockwise. When the plug post A431 rotates counterclockwise, the plug post A431 pushes the roller A42 toward the relatively narrow portion b. Since the outer ring body A32 of the one-way bearing A3 cannot rotate counterclockwise around the inner ring body A31, the roller A42 will be stuck between the inclined surface a and the outer ring body A32, so that the plug post A431 cannot rotate counterclockwise, and the driven body A43 and the rope winding shaft 100 are locked, and the rope winding shaft 100 cannot let go of the rope, thereby preventing the lifted object from falling when the external rotating motor A2 fails, thereby ensuring lifting safety. In the self-locking state, the main shaft A1, the outward-rotating motor A2, the one-way bearing and the self-locking component A4 all share the torque, so as to prevent the outward-rotating motor A2 from bearing the load alone.

[0139] In addition, when it is necessary to release the lock of the rope winding shaft 100, for example, to continue to release the rope (descend), the external rotating motor A2 drives the drive ring A41 to rotate counterclockwise to unlock the rope. The process of releasing the rope driven by the external rotating motor A2 is as described above; however, it should be noted that since there is no need to move the roller A42 when unlocking, the external rotor A22 drives the drive ring A41 to rotate to unlock the rope, and the unlocking force requirement is low; in addition, no jamming will occur when the drive ring A41 rotates.

[0140] In some embodiments, Figure 4 and Figure 5 As shown, it also includes a speed reduction mechanism A5, and an output gear A432 is provided at one end of the driven body A43 away from the driving ring A41, and the output gear A432 is in transmission connection with the speed reduction mechanism A5. The output gear A432 can rotate with the driven body A43, and the speed reduction mechanism A5 is connected to the rope winding shaft 100, so that when the driven body A43 rotates, the output gear A432 drives the rope winding shaft 100 to rotate through the speed reduction mechanism A5.

[0141] In some embodiments, in order to facilitate manual operation of the rope release (descent) in the event of failure of the external rotating motor A2; Figure 7-9As shown, the driven body A43 includes a first rotating body A433 and a second rotating body A434 coaxially arranged along the axial direction of the main axis A1, the first rotating body A433 and the second rotating body A434 are fixedly connected and a cavity A438 is formed therebetween, the output gear A432 is coaxially rotatably connected to the first rotating body A433, a clutch transmission member A435 and a first elastic member A436 are arranged in the cavity A438; the clutch transmission member A435 includes a transmission shaft A4351 and a transmission plate A4352 fixedly connected to one end of the transmission shaft A4351, the transmission shaft A4351 is fixedly sleeved in the output gear A432, so that the transmission shaft A43 51 is circumferentially fixed to the output gear A432; the first elastic member A436 provides elastic force for the transmission disk A4352 to form an extrusion fit between the transmission disk A4352 and the first rotating body A433; a hollow channel A11 is formed in the main shaft A1, and a manual operating rod A6 is slidably sleeved in the channel A11, and the channel A11 is connected to the cavity A438, and the manual operating rod A6 is used to reduce the elastic force provided by the first elastic member A436 to the transmission disk A4352; when the first elastic member A436 provides the maximum elastic force to the transmission disk A4352, the transmission disk A4352 and the first rotating body A433 are relatively fixed.

[0142] Specifically, in this embodiment, under normal conditions (i.e., when driven to rise or fall by the external rotating motor A2), the transmission plate A4352 is relatively fixed to the first rotating body A433, and because the transmission shaft A4351 is relatively fixed to the output gear A432, and the first rotating body A433 is relatively fixed to the second rotating body A434, the output gear A432 rotates synchronously with the first rotating body A433 and the second rotating body A434. When the plug post A431 rotates, the output gear A432 will be driven to rotate;

[0143] When the external rotating motor A2 fails, the manual operating lever A6 can be used to reduce the elastic force provided by the first elastic member A436 on the transmission disc A4352. The less elastic force provided by the first elastic member A436, the smaller the friction between the transmission disc A4352 and the first rotating body A433, that is, the transmission disc A4352 and the first rotating body A433 are easier to rotate relative to each other. Therefore, by making the transmission disc A4352 rotatable relative to the first rotating body A433, the output gear A432 can rotate relative to the first rotating body A433. The clutch transmission member A435 rotates synchronously relative to the first rotating body A433; in other words, by reducing the elastic force provided by the first elastic member A436, the connection between the output gear A432 and the driven body A43 is gradually released, and when the output gear A432 is rotatable, the rope winding shaft 100 can also rotate to achieve rope release; wherein, the elastic force provided by the first elastic member A436 affects the rotational speed of the clutch transmission body and the output gear A432, thereby achieving control of the rope release speed of the rope winding shaft 100.

[0144] The above scheme is specific, such as Figure 7 and Fig. 9 As shown, a pressure plate A437 is also provided in the cavity A438, and the pressure plate A437 is located between the transmission plate A4352 and the second rotating body A434, a first brake pad A4353 is provided between the transmission plate A4352 and the first rotating body A433, and a second brake pad A4354 is provided between the transmission plate A4352 and the pressure plate A437; wherein, the first brake pad A4353 can be fixed on the transmission plate A4352 or the first rotating body A433, and the second brake pad A4354 can be fixed on the transmission plate A4352 or the pressure plate A437; the first brake pad A4353 and the second brake pad A4354 are utilized to increase the friction force on the transmission plate A4352 to prevent the transmission plate A4352 from slipping.

[0145] like Fig.10 As shown, the first elastic member A436 includes a base plate A4361 and a spring sheet A4362 extending radially from the center of the base plate A4361, the spring sheet A4362 is inclined in the direction of the first rotating body A433, the free end of the spring sheet A4362 abuts against the pressure plate A437, the middle part of the spring sheet A4362 is connected to the second rotating body A434 through a fixing pin A4363, the manual operating rod A6 squeezes the base plate A4361 to move the free end of the spring sheet A4362 away from the first rotating body A433; the channel A11 is provided with a second elastic member A13 for driving the manual operating rod A6 away from the pressure plate A437. In this embodiment, Fig. 9From the perspective of the manual operating rod A6, the manual operating rod A6 pushes the base plate A4361, and the base plate A4361 uses the fixing pin A4363 as a fulcrum to move the free end of the spring sheet A4362 to the right, that is, the spring sheet A4362 gradually releases the pressure on the pressure plate A437, so that the transmission plate A4352 is relaxed. The second elastic member A13 can reset the manual operating rod A6.

[0146] In other embodiments, the first elastic member A436 may be pulled by the manual operating rod A6 to reduce the elastic force provided by the first elastic member A436; for example, Fig. 9 The fixing pin A4363 is removed to fix the base plate A4361 to the manual operating rod A6. When the manual operating rod A6 is moved to the right, the elastic force of the spring sheet A4362 on the pressure plate A437 will be reduced.

[0147] In the above scheme, if Figure 7 and Fig. 9 As shown, the first rotating body A433 and the second rotating body A434 are fixedly connected by a plurality of locking bolts A4331; the length direction of the locking bolts A4331 is arranged along the axial direction of the main shaft A1; the outer peripheral wall of the pressure plate A437 is concavely provided with a plurality of limiting grooves A4371, the plurality of limiting grooves A4371 are distributed at intervals along the circumferential direction, and the length direction of the limiting grooves A4371 is arranged along the axial direction of the main shaft A1, and the locking bolts A4331 are slidably arranged in the limiting grooves A4371. In this way, the locking bolts A4331 can not only realize the fixed connection between the first rotating body A433 and the second rotating body A434, but also limit the pressure plate A437, so that when the first elastic member A436 acts on the pressure plate A437, the pressure plate A437 can only move along the axial direction, so that the pressure plate A437 can squeeze the transmission plate A4352 more evenly.

[0148] In some embodiments, Figure 8 As shown, the drive ring A41 includes a fixed sleeve A412 and a transmission steel ring A413; the fixed sleeve A412 is fixedly connected to the outer rotor A22; the transmission steel ring A413 is fixedly sleeved in the fixed sleeve A412, and the groove A411 is arranged on the inner wall of the transmission steel ring A413. The fixed sleeve A412 is made of aluminum alloy, which is conducive to heat dissipation; and the transmission steel ring A413 is made of steel, which maintains a high-strength structure and avoids deformation of the groove A411.

[0149] Furthermore, if Figure 8As shown, the driving ring A41 also includes an air guide A414; the air guide A414 includes a plurality of air guide blades A4141 distributed along the circumferential direction, and the air guide A414 is fixedly sleeved in the fixed sleeve A412; the fixed sleeve A412, the transmission steel ring A413 and the air guide A414 are fixed together, and the three rotate synchronously; a partition A4121 located between the transmission steel ring A413 and the air guide A414 is provided in the fixed sleeve A412, and a plurality of air guide holes A4121 corresponding to the position of the air guide A414 are provided on the outside of the fixed sleeve A412. In this way, when the outer rotor A22 drives the fixed sleeve A412 to rotate, the air guide A414 rotates synchronously, and the air guide A414 can guide the air in the outer rotor motor A2 to the air guide holes A4121 of the fixed sleeve A412 to enhance heat dissipation.

[0150] Furthermore, if Figure 4 and Figure 5 As shown, it also includes a protective sleeve A7; the main shaft A1, the outer rotor motor A2, the one-way bearing A3, the self-locking component A4 and the speed reduction mechanism A5 are all arranged in the protective sleeve A7; the protective sleeve A7 can provide protection and make the drive device A0 compact; in addition, a fixed disk A12 is provided at one end of the main shaft A1 away from the self-locking component A4, one end of the protective sleeve A7 is fixedly provided on the fixed disk A12, an air guide gap d is formed between the main shaft A1 and the outer rotor A22, and the fixed disk A12 is provided with an air inlet A121 connected to the interior of the outer rotor motor A2 and an air outlet A122 connected to the air guide gap d. In this way, refer to Figure 5 When the outer rotor A22 rotates, the air guide member A414 guides the air in the outer rotor motor A2 to the air guide hole A4121 of the fixed sleeve A412, and the external air enters the outer rotor motor A2 through the air inlet A121, and the air flowing out of the air guide hole A4121 is discharged to the outside through the air guide gap d and the air outlet A122. In this way, a circulating flow of air is formed to enhance the heat dissipation effect.

[0151] In some embodiments, Figure 4 and Figure 5 As shown, the reduction mechanism A5 is a multi-stage planetary reduction mechanism. Conventionally, the multi-stage planetary reduction mechanism includes a multi-stage planetary carrier, and can be fixedly connected to the rope winding shaft 100 through the planetary carrier of the last stage.

[0152] In addition, for increased safety, refer to Fig.44A brake mechanism E1 is provided on one side of the rope winding shaft 100, and the brake mechanism E1 is, for example, a drum brake mechanism. The portable aerial work lift also includes a control rocker arm E0, and the control rocker arm E0 can control the friction force of the brake mechanism E1 on the rope winding shaft 100, so that when the driving device A0 fails, the rope winding shaft 100 can be manually braked to prevent it from falling from a high altitude; in addition, referring to Fig. 9 and Fig.44 The control rocker arm E0 is connected with a spiral push rod E2, which is threadedly connected to the manual operating rod A6, and the spiral push rod E2 is rotatably arranged on the frame 200. The control rocker arm E0 can rotate the spiral push rod E2, and the spiral push rod E2 drives the manual operating rod A6 to move axially. In this embodiment, the specific structure and connection relationship of the brake mechanism E1, the spiral push rod E2 and the control rocker arm E0 can directly refer to the second brake mechanism, the spiral push rod and the control rocker arm in the prior art with the publication number CN216125089U, so it is not described in detail here.

[0153] Regarding the rope arrangement device of the present invention:

[0154] refer to Figure 32-42 The rope arrangement device of the present invention includes a screw rod D1, a slide D2, a first transmission path D3, a second transmission path D4 and a direction-changing drive mechanism D5;

[0155] The screw rod D1 is provided with a one-way thread groove, which is arranged parallel to the rope winding shaft; the rope 300 on the rope winding shaft passes through the slide D2, and the slide D2 is threadedly connected to the screw rod D1, and the slide D2 can move axially but is fixedly arranged on the screw rod D1 along the circumferential direction; the first transmission path D3 is composed of a single number of gears connected in sequence, the gear at one end of which is connected in transmission to the screw rod D1, and the gear at the other end is defined as a first steering gear D31; the second transmission path D4 is composed of a plurality of gears connected in sequence, the gear at one end of which is connected in transmission to the screw rod D1, and the gear at the other end is defined as a second steering gear D41; the direction-changing drive mechanism D5 includes a steering drive gear D51 that can switch between the first steering gear D31 and the second steering gear D41 to drive one of them; the steering drive gear D51 rotates synchronously with the rope winding shaft; wherein, the first transmission path D3 and the second transmission path D4 can be independent of each other; or the first transmission path D3 and the second transmission path D4 partially overlap.

[0156] The direction-changing drive mechanism D5 includes a direction-changing planetary frame D52, a rope-arranging synchronous shaft D53, and an intermittent transmission mechanism D55; the direction-changing planetary frame D52 is provided with a plurality of steering drive gears D51, and the steering drive gears D51 serve as planetary gears on the direction-changing planetary frame D52; the rope-arranging synchronous shaft D53 rotates synchronously with the rope winding shaft, and a direction-changing sun gear D54 is sleeved thereon, and the direction-changing sun gear D54 is meshed with the steering drive gear D51; the intermittent transmission mechanism D55 is used to realize intermittent transmission between the rope-arranging synchronous shaft D53 and the direction-changing planetary frame D52; Fig.33 As shown, the angle between two adjacent steering drive gears D51 and the central axis of the changing planetary carrier D52 is a first angle G, the angle between the first steering gear D31, the second steering gear D41 and the central axis of the changing planetary carrier D52 is a second angle H, and the first angle G is twice the second angle H; the rope-laying synchronization shaft D53 has the same rotation speed as the screw D1.

[0157] The working principles of the screw rod D1, the slide D2, the first transmission path D3, the second transmission path D4 and the direction-changing drive mechanism D5 in the above structure can refer to the prior art with publication number CN113582061A, which will not be elaborated here.

[0158] The characteristics of the rope arrangement device D0 of the present invention are:

[0159] refer to Figure 37-41 A buffer mechanism D56 is arranged between the rope-arranging synchronization shaft D53 and the direction-changing sun gear D54, and the buffer mechanism D56 includes at least one transmission groove D541 recessed on the inner wall of the direction-changing sun gear D54, at least one transmission block D531 protruding on the outer wall of the rope-arranging synchronization shaft D53, and an elastic buffer member D561; the transmission block D531 is arranged in the transmission groove D541, and in an initial state, a buffer space D562 is formed between the two side walls of the transmission block D531 in the circumferential direction and the two side walls of the transmission groove D541 in the circumferential direction; the elastic buffer member D561 is used for applying an elastic pre-force to the direction-changing sun gear D54 to restore the transmission block D531 to its position in the initial state.

[0160] Specifically, in the above-mentioned initial state, it means that the steering drive gear D51 is not engaged with the first steering gear D31 and the second steering gear D41 at the same time. At this time, the steering drive gear D51 is not subjected to external force from the first steering gear D31 or the second steering gear D41. Fig.38 As shown, under the action of the elastic pre-force of the elastic buffer D561, a buffer space D562 is formed between the transmission block D531 and the inner wall of the transmission groove D541;

[0161] When the steering drive gear D51 is switched to engage with the first steering gear D31 / the second steering gear D41, no matter whether the teeth on the steering drive gear D51 are aligned and engaged with the teeth on the first steering gear D31 / the second steering gear D41, during the process in which the direction-changing planetary carrier D52 drives the steering drive gear D51 to revolve around the direction-changing sun gear D54, the teeth on the steering drive gear D51 will be subject to resistance from the first steering gear D31 or the second steering gear D41. Since the steering drive gear D51 is engaged with the direction-changing sun gear D54, the resistance on the steering drive gear D51 will be transmitted to the direction-changing sun gear D54. The resistance will resist the elastic preload of the elastic buffer D561, and the transmission groove D541 on the direction-changing sun gear D54 and the transmission between the rope-arranging synchronous shaft D53 will be The movable block D531 will rotate relatively, which is manifested by the reduction of the buffer space D562 on one side of the transmission block D531 and the expansion of the buffer space D562 on the other side; that is, the changing direction sun gear D54 can rotate a certain amplitude relative to the rope-laying synchronization shaft D53, and the steering drive gear D51 rotates a certain amplitude along with the changing direction sun gear D54, so that the steering drive gear D51 can smoothly engage with the first steering gear D31 / second steering gear D41; wherein, the buffer space D562 causes the rotation amplitude of the changing direction sun gear D54 relative to the rope-laying synchronization shaft D53 to be within a range, at least, when the buffer space D562 on one side disappears or can no longer be reduced, it means that the transmission block D531 can push the inner wall of the transmission groove D541, and the rope-laying synchronization shaft D53 can drive the changing direction sun gear D54 to rotate.

[0162] In some embodiments (this embodiment is not shown in the figure), the elastic buffer member D561 can be two springs respectively arranged in two buffer spaces D562, one end of the spring abuts against the inner wall of the transmission groove D541, and the other end abuts against the outer wall of the transmission block D531; the two springs keep the position of the transmission block D531 in the transmission groove D541 balanced.

[0163] In order to improve the stability of the elastic buffer D561, in other embodiments, reference Figure 37-41The inner hole of the direction-changing sun gear D54 includes a transmission hole section D54a and a buffer hole section D54b in the axial direction; the transmission groove D541 is arranged in the transmission hole section D54a; the inner wall of the buffer hole section D54b is concavely formed with a buffer guide groove D542, and the buffer guide groove D542 includes two guiding inclined surfaces D542a; the edges of the two guiding inclined surfaces D542a that are away from each other intersect with the inner wall of the buffer hole section D54b, and the two guiding inclined surfaces D542a are mutually The edges close to each other meet and form an abutment recess D542b; the rope arranging synchronous shaft D53 is provided with an assembly hole D532 opened in the radial direction; the elastic buffer member D561 includes a top ball D5613 slidably arranged in the assembly hole D532 and an eighth elastic member D5611 for driving the top ball D5613 away from the axis of the rope arranging synchronous shaft D53, and the top ball D5613 rolls and abuts against the guide inclined surface D542a of the buffer guide groove D542;

[0164] Specifically, under the guiding action of the guiding inclined surface D542a, when the top ball D5613 is pushed by the eighth elastic member D5611, the top ball D5613 moves to the abutting recess D542b. Therefore, in the initial state, the steering drive gear D51 is not subjected to external force from the first steering gear D31 or the second steering gear D41. Fig.40 As shown, the top ball D5613 is located at the abutment recess D542b of the buffer guide groove D542; Fig.38 As shown, a buffer space D562 is formed between the transmission block D531 and the inner wall of the transmission groove D541.

[0165] When the steering drive gear D51 is subjected to external force, the direction-changing sun gear D54 is subjected to a torque that drives it to rotate, and the guide slope D542a squeezes the top ball D5613, and the top ball D5613 rolls along the guide slope D542a. Fig.41 As shown, the top ball D5613 is staggered from the abutment recess D542b, and the direction-changing sun gear D54 rotates relative to the rope-arranging synchronization shaft D53 until the transmission block D531 abuts against the inner wall of the transmission groove D541.

[0166] Wherein, the guiding inclined surface D542a can be a plane or a curved surface.

[0167] Preferably, in order to improve the structural stability, two transmission grooves D541, two transmission blocks D531 and two buffer guide grooves D542 are provided; Fig.40 or Fig.41As shown, the elastic buffer D561 also includes a limiting cylinder D5611, which is fixedly arranged in the assembly hole D532 of the rope arranging synchronous shaft D53. The limiting cylinder D5611 is hollow inside and has openings at both ends. Two top beads D5613 are provided and arranged inside the limiting cylinder D5611. The diameters of the openings at both ends of the limiting cylinder D5611 are smaller than the diameter of the top beads D5613. The eighth elastic member D5611 is a spring arranged between the two top beads D5613. In this way, the limiting cylinder D5611, the spring and the top beads D5613 can be combined into one component, which is convenient for assembly in the assembly hole D532, and the top beads D5613 will not be separated from the limiting cylinder D5611, ensuring the stability of the top beads D5613 in the buffer hole section D54b. In addition, the two guiding inclined surfaces D542a in the buffer guide groove D542 are symmetrically arranged.

[0168] In the above scheme, the intermittent transmission mechanism D55 can refer to the structure in the prior art with publication number CN113582061A;

[0169] In order to further improve the stability of intermittent transmission, in this embodiment, Figure 33-35 as well as Fig.42 As shown, the intermittent transmission mechanism D55 includes:

[0170] An intermittent output member D551, wherein the intermittent output member D551 is coaxially arranged with the direction-changing planetary frame D52 and the rope-arranging synchronous shaft D53 and is relatively fixed;

[0171] An initial output gear D552, wherein the initial output gear D552 is fixedly sleeved on the rope arrangement synchronization shaft D53;

[0172] At least one first intermittent transmission body D553, the first intermittent transmission body D553 is rotatably sleeved on the rope arrangement synchronization shaft D53, one end of the first intermittent transmission body D553 is formed with a first gear meshing part D5531, and the other end is formed with an intermittent driven part D5532;

[0173] At least one second intermittent transmission body D554, wherein the second intermittent transmission body D554 is arranged outside the first detection transmission body, and a second gear meshing portion D5541 is formed at one end of the second intermittent transmission body D554, and an intermittent driving portion D5542 is formed at the other end;

[0174] Among them, the second gear meshing portion D5541 meshes with the first gear meshing portion D5531 or the initial output gear D552; the intermittent driving portion D5542 forms a Geneva transmission fit with the intermittent driven portion D5532 or the intermittent output member D551.

[0175] It should be noted that, compared with the prior art with publication number CN113582061A, the present embodiment does not use incomplete gears to avoid the possibility of slipping, making the transmission of the intermittent transmission mechanism D55 more stable. Conventionally, the intermittent driving part D5542 is a dial equipped with a cylindrical pin, the intermittent driven part D5532 is a grooved wheel structure, and the intermittent output member D551 is provided with a grooved wheel structure. Among them, the Geneva transmission fit in this embodiment is a common intermittent transmission fit, so it will not be described in detail;

[0176] For details of the above scheme, please refer to Figure 33-35 The intermittent transmission mechanism D55 also includes a protective shell D555, and three limiting shafts D5551 are arranged inside the protective shell D555. The limiting shafts D5551 are fixed in position and arranged in parallel with the rope arranging synchronous shaft D53. The second intermittent transmission body D554 is rotatably arranged on the limiting shafts D5551. The second intermittent transmission body D554 is arranged on each of the three limiting shafts D5551, that is, three second intermittent transmission bodies D554 are arranged on the circumference of a first intermittent transmission body D553, so that the force of the first intermittent transmission body D553 is more stable.

[0177] Specifically, in order to avoid excessive friction between the slide D2 and the rope 300, which causes the rope 300 to be worn, refer to Fig.32 and Fig.35 The slide D2 includes two rope arranging wheels D22 which are arranged opposite to each other to clamp the rope 300. The outer circumferential surface of the rope arranging wheels D22 has a hub portion for clamping the rope 300. The slide D2 is provided with a movable rope guide frame D21, and the rope arranging wheels D22 are rotatably arranged on the rope guide frame D21. In this way, the rope 300 is buffered on the slide D2, and even if the rope 300 is wound and moved, there will not be too much friction, which can improve the service life of the rope 300.

[0178] Regarding the rope-discharging device of the present invention:

[0179] refer to Figure 11-19 The rope discharging device of the present invention comprises a housing B1, a rope guide assembly B2, a rope tightening assembly B3, a rope discharging motor B4 and a first sensor B5;

[0180] The shell B1 is provided with a rope inlet end B12 and a rope outlet end B11; the guide rope assembly B2 includes at least one active guide wheel B21, at least one driven guide wheel B22 and a third elastic member B23, the active guide wheel B21 is rotatably provided on the shell B1, the driven guide wheel B22 is movably provided on the shell B1 along a prescribed path, a first rope passage e for the rope 300 to pass through is formed between the outer peripheral wall of the active guide wheel B21 and the outer peripheral wall of the driven guide wheel B22, the third elastic member B23 is used to push the driven guide wheel B22 close to the active guide wheel B21; the rope tightening assembly B3 is located on the side of the guide rope assembly B2 close to the rope inlet end B12, the rope tightening assembly B3 is provided on the side of the guide rope assembly B2 close to the rope inlet end B12, and the rope tightening assembly B3 is provided on the side of the guide rope assembly B2 close to the rope inlet end B12. Component B3 includes a guide column B31, a movable seat B32 and a fourth elastic member B33; the movable seat B32 is slidably arranged on the guide column B31, and a second rope passing channel f is provided on the movable seat B32. The movable seat B32 is configured to move in a first direction on the guide column B31 under the action of a taut rope 300, and the fourth elastic member B33 is used to apply an elastic force on the movable seat B32 to move in a second direction on the guide column B31, and the first direction and the second direction are two opposite directions in the length direction of the guide column B31; the rope output motor B4 is transmission-connected to the active guide wheel B21; the first sensor B5 is used to detect the position of the movable seat B32 on the guide rod.

[0181] Among them, the rope-out motor B4 drives the active guide wheel B21 to rotate, and the driven guide wheel B22 can press the rope 300 onto the active guide wheel B21 under the action of the third elastic member B23, and the active guide wheel B21 drives the rope 300 through friction force to pull out the rope 300; preferably, the outer peripheral walls of the active guide wheel B21 and the driven guide wheel B22 are both recessed with a groove with a U-shaped cross-section (not marked in the figure), so that the outer peripheral walls of the active guide wheel B21 and the driven guide wheel B22 can match the outer surface contour of the rope 300, so that the rope 300 is not easy to detach from between the active guide wheel B21 and the driven guide wheel B22.

[0182] like Figure 1 The frame 200 is provided with a housing 400, and the housing 400 has an outlet (not marked in the figure) for the rope 300 to enter and exit, and the rope outlet device B0 is arranged near the outlet.

[0183] Specifically, in the case where there is no gravity to tighten the rope 300, the rope output assembly can use the active guide wheel B21 and the driven guide wheel B22 of the guide rope assembly B2 to pull the rope 300 out of the portable aerial work lift to avoid the rope 300 released from the rope winding shaft 100 from accumulating inside the portable aerial work lift; wherein, when the rope output assembly pulls out the rope 300, the rope 300 is pulled tight, such as Fig.18 As shown, the tight rope 300 exerts a force on the moving seat B32 of the tight rope assembly B3, driving the moving seat B32 to move along the guide post B31 in the first direction (in Fig.18 At the same time, the fourth elastic member B33 exerts a force on the movable seat B32 to move along the guide pillar B31 in the second direction (at Fig.18 The perspective is moving to the left), under the tension of the rope 300 and the elastic force of the fourth elastic member B33, the position of the movable seat B32 on the guide column B31 tends to be stable, such as Fig.18 As shown, at this time, the distance between the first sensor B5 and the moving seat B32 is L1; it can be seen that when the tension of the rope 300 is smaller, the position of the moving seat B32 on the guide column B31 is further to the left, such as Fig.19 As shown, when the rope is loose, the distance between the first sensor B5 and the moving seat B32 is L2, where L1>L2; therefore, the first sensor B5 can determine the degree of looseness of the rope 300 by retrieving the position of the moving seat B32 on the guide rod. When the rope 300 is loosened to a certain extent, it means that the rope-out speed of the guide rope assembly B2 is less than or much less than the speed of the rope winding shaft 100 releasing the rope 300. At this time, the driving device can be turned off to stop the rope winding shaft 100 from releasing the rope 300 before the rope 300 is tangled inside the portable aerial work lift.

[0184] Preferably, the first sensor B5 may detect that the moving seat B32 is too far to the left ( Fig.18 The first sensor B5 may be electrically connected to the driving device A0, and when the first sensor B5 detects that the moving seat B32 is too far to the left ( Fig.18 After the portable aerial work lifter is lifted, the rope 300 will be tightened by the gravity of the lift, and the movable seat B32 will not be too far to the left ( Fig.18 That is, during the lifting process of the portable aerial work lifter, the driving device will not be driven to stop by the first sensor B5.

[0185] The above scheme is specific, such as Fig.15As shown, two positioning guide wheels B35 are rotatably arranged on the moving seat B32, and grooves with U-shaped cross sections (not marked in the figure) are formed on the outer peripheral walls of the two positioning guide wheels B35, and the second rope passage f is formed between the two positioning guide wheels B35. In this way, when the rope 300 passes through the rope tightening assembly B3, it can keep the rope out smoothly, and avoid the rope tightening assembly B3 affecting the rope 300 out; in this embodiment, the positioning guide wheel B35 can be slidably arranged on the guide column B31 through a sliding bearing (not marked in the figure), so that the positioning guide wheel B35 and the moving seat B32 can move synchronously.

[0186] The above scheme is specific, such as Fig.15 and Fig.16 As shown, the fourth elastic member B33 is a spring sleeved on the guide column B31, and the fourth elastic member B33 forms an extrusion fit with one side of the moving seat B32; the first sensor B5 is fixed on the housing B1, and the first sensor B5 is located on the side of the moving seat B32 away from the elastic member; the first induced member B36 for the first sensor B5 to sense is provided on the side of the moving seat B32 close to the first sensor B5. The first induced member B36 can be a magnetic block, and the first sensor B5 can be a photoelectric sensor; when the moving seat B32 is close to the first sensor B5 within a certain distance, the first sensor B5 can sense the first induced member B36.

[0187] The above scheme is specific, such as Fig.15 As shown, the first adjusting member B34 is connected to the side of the fourth elastic member B33 away from the moving seat B32, and the first adjusting member B34 is threadedly connected to the housing B1 to achieve the position adjustment of the first adjusting member B34 along the axial direction of the fourth elastic member B33. In this way, the elastic force applied by the fourth elastic member B33 to the moving seat B32 can be adjusted by rotating the first adjusting member B34.

[0188] In some embodiments, in order to reduce the risk of rope 300 breaking and improve the safety of using the portable aerial work lift, as shown in FIG. Fig.13 and Fig.14 As shown, it also includes a second sensor B6, which is fixed on the housing B1; a second sensing member B24 is arranged outside the driven guide wheel B22; when the driven guide wheel B22 approaches the driving guide wheel B21 to a certain distance, the second sensor B6 senses the second sensing member B24. The second sensing member B24 can be a magnetic block, and the second sensor B6 can be a photoelectric sensor;

[0189] In this embodiment, the thickness of the rope 300 at the breaking position will become smaller before it breaks. The thickness change of the rope 300 is not instantaneous. When the thickness of the rope 300 becomes smaller, the driven guide wheel B22 can be closer to the active guide wheel B21, that is, the first rope passage e between the active guide wheel B21 and the driven guide wheel B22 will become smaller. When the thickness of the rope 300 is reduced to a certain extent, the second sensor B6 can sense the second sensed part B24, which means that the rope 300 needs to be replaced. The second sensor B6 can trigger an alarm to remind the user to replace the rope 300, thereby avoiding the rope 300 from breaking during subsequent use.

[0190] In some embodiments, when the portable aerial work lift is lifting an object, the rope 300 will be tightened by the gravity of the object, and the rope 300 will not only generate a force on the moving seat B32, but also generate a force on the driven guide wheel B22, so that the driven guide wheel B22 is away from the driving guide wheel B21, so that the rope 300 is separated from the driving guide wheel B21, and the driving guide wheel B21 is prevented from rubbing against the rope 300; Fig.13 As shown, this embodiment further includes a third sensor B7, which is fixed on the housing B1 and is electrically connected to the rope-out motor B4; when the driven guide wheel B22 is away from the active guide wheel B21 to a certain distance, the third sensor B7 senses the second sensed component B24, and the third sensor B7 triggers the rope-out motor B4 to stop working. In this way, when the third sensor B7 senses the second sensed component B24, it means that the rope 300 is separated from the active guide wheel B21, and the rope-out motor B4 automatically stops working, avoiding the meaningless idling of the active guide wheel B21 and reducing the energy consumption of the portable aerial work lifter.

[0191] In some embodiments, reference Fig.13, further comprising a fourth sensor B8 and a third sensed component; the third sensed component is arranged at the end of the rope 300; the fourth sensor B8 is arranged at the rope outlet end B11 of the housing B1, and the fourth sensor B8 is used to sense the third sensed component. According to the prior art CN112551413A, a rope-locking device is connected to the end of the rope 300. When the rope winding shaft 100 completes the rope collection but does not stop in time, the rope-locking device will hit the housing 400 of the portable aerial work lift, and may cause the driving device A0 that drives the rope winding shaft 100 to rotate to burn out; in this embodiment, by setting the third sensed component at the end of the rope 300, the fourth sensor B8 can be electrically connected to the driving device that drives the rope winding shaft 100 to rotate. When the rope collection is completed, the fourth sensor B8 can sense the third sensed component, and the fourth sensor B8 can trigger the driving device A0 to stop working, so as to prevent the rope winding shaft 100 from still rotating to collect the rope.

[0192] The third sensed component may be a color layer disposed at the end of the rope 300, and the fourth sensor B8 may be a color sensor. For another example, the third sensed component may be a magnetic component fixed at the end of the rope 300, and the fourth sensor B8 may be a photoelectric sensor.

[0193] In some embodiments, Fig.14 As shown, the third elastic member B23 is a spring, one end of the third elastic member B23 forms an extrusion fit with the driven guide wheel B22, and the other end of the third elastic member B23 is connected to a second adjustment member B26; the second adjustment member B26 is threadedly connected to the housing B1 to achieve the position adjustment of the second adjustment member B26 along the axial direction of the third elastic member B23. Among them, the third elastic member B23 is not in direct contact with the driven guide wheel B22, and the extrusion of the third elastic member B23 does not affect the rotation of the driven guide wheel B22. By adjusting the position of the second adjustment member B26, the elastic force applied by the third elastic member B23 to the driven guide wheel B22 can be adjusted, thereby adjusting the clamping force of the rope 300 pressed in the first rope passage e.

[0194] In some embodiments, to further reduce the possibility of the rope 300 slipping on the guide rope assembly B2, as shown in FIG. Fig.15As shown, the active guide wheel B21 is provided with two, which are defined as the first active guide wheel B21a and the second active guide wheel B21b respectively; the driven guide wheel B22 is provided with two, which are defined as the first driven guide wheel B22a and the second driven guide wheel B22b respectively, a connecting rod B25 is connected between the first driven guide wheel B22a and the second driven guide wheel B22b, the first driven guide wheel B22a and the second driven guide wheel B22b are respectively rotatably connected to the two ends of the connecting rod B25, and the middle part of the connecting rod B25 is hinged to the housing B1; the connecting line between the first active guide wheel B21a and the second active guide wheel B21b is arranged to cross the connecting line between the first driven guide wheel B22a and the second driven guide wheel B22b; the first rope passing channel e is formed between the first active guide wheel B21a and the first driven guide wheel B22a, and between the second active guide wheel B21b and the second driven guide wheel B22b; as shown Fig.16 As shown, the second sensing member B24 can be arranged outside the first driven guide wheel B22a, or as shown in FIG. Fig.17 As shown, the second sensed member B24 can be arranged outside the second driven guide wheel B22b. The third elastic member B23 can act on the connecting rod B25, and when the connecting rod B25 swings, it will drive the first driven guide wheel B22a and the second driven guide wheel B22b to move; in this embodiment, by clamping the rope 300 at two positions, the possibility of the rope 300 slipping on the guide rope assembly B2 can be further reduced.

[0195] In some embodiments, according to the prior art CN112551413A, the rope 300 on the rope winding shaft 100 may be provided with multiple ropes, so that even if some of the ropes 300 break, the hoisted object will not fall, thereby improving safety; in this embodiment, if Fig.12 As shown, the guide rope assembly B2, the tightening rope assembly B3 and the first sensor B5 are respectively provided in multiple groups and correspond one to one, while the rope output motor B4 is only provided with one. The active guide wheels B21 in the multiple groups of guide rope assemblies B2 are all fixedly sleeved on a transmission shaft B13. In this way, one rope output motor B4 can drive the active guide wheels B21 in all the guide rope assemblies B2 to rotate, thereby reducing the number of rope output motors B4 and reducing the cost of lightweight aerial work lifters.

[0196] About the portable rope buckle device of the present invention:

[0197] refer to Figure 20-31 The portable rope buckle device C0 of the present invention is arranged on the top of the portable aerial work lifter, and includes a frame 200, a portable unit C1, a lock reset unit C2 and an unlocking unit C3;

[0198] refer to Figure 21-23The frame 200 is provided with a first slideway 210; the portable unit C1 includes a carrying handle C11, the carrying handle C11 is connected to a connecting arm C12, the connecting arm C12 is connected to a rope lock assembly C13 at one end away from the carrying handle C11, and the carrying handle C11 is provided with a rope fixing assembly C14 for connecting a rope 300; the rope lock assembly C13 and at least part of the connecting arm C12 are slidably arranged in the first slideway 210; the lock reset unit C2 The slide is set in the first slide 210, and the lock reset unit C2 includes a sliding base C21. The sliding base C21 is provided with a locking mechanism C22 and a fifth elastic member C23. The locking mechanism C22 is snap-connected with the rope lock assembly C13, and the fifth elastic member C23 is used to provide the sliding base C21 with a force to move toward the bottom end of the first slide 210; the unlocking unit C3 is used to disengage the locking mechanism C22 and the rope lock assembly C13.

[0199] Simply put, the portable rope lock device C0 has both a portable function and a rope lock function. In the initial state, the portable unit C1 is connected to the frame 200 through the lock reset unit C2, and the frame 200 and even the entire lightweight aerial work lifter can be lifted by the portable unit C1, which is convenient for carrying; when a lifting operation is required, the portable unit C1 can be pulled out of the frame 200, and the rope lock assembly C13 on the portable unit C1 can be locked with the rope 300 to fix the rope 300 on a high-altitude fixed object.

[0200] The housing 400 has an outlet (not marked in the figure) for the rope 300 to enter and exit, and the hand-held rope buckle device C0 is arranged near the outlet.

[0201] The frame 200 is arranged in the housing 400, and the hand-held unit C1 and the lock reset unit C2 in the hand-held rope lock device C0 are arranged in the first slideway 210 of the frame 200, so that at least part of the hand-held rope lock device C0 is embedded in the portable aerial work lifter; Figure 1 As shown, in this embodiment, in the initial state, the hand-held rope buckle device C0 is completely embedded in the portable aerial work lifter.

[0202] Specifically, in the initial state, the cord lock assembly C13 on the portable unit C1 is buckled with the lock mechanism C22 of the lock reset unit C2, and the fifth elastic member C23 drives the sliding base C21 to move toward the bottom end of the first slideway 210. Fig.23As shown, in the absence of external force, the hand-held unit C1 is embedded in the lightweight aerial work lifter, so that the hand-held rope buckle device C0 is not easy to collide, avoid affecting the connection structure between the hand-held rope buckle device C0 and the rope 300, and also avoid the rope 300 from being easily worn.

[0203] When the portable aerial work lift is needed, the carrying handle C11 can be pulled upwards, and the pulling force on the carrying handle C11 will resist the elastic force of the fifth elastic member C23, so that the carrying unit C1 and the lock reset unit C2 are both moved upwards along the first slide 210, so that at least part of the carrying unit C1 is exposed outside the portable aerial work lift, at least, the carrying handle C11 is completely exposed outside the portable aerial work lift for easy grasping; when the portable aerial work lift is not needed, the carrying handle C11 is released, and under the action of the fifth elastic member C23, the carrying unit C1 and the lock reset unit C2 are reset, that is, they descend along the first slide 210, so that the carrying unit C1 is re-embedded in the portable aerial work lift.

[0204] When lifting is required, the unlocking unit C3 can be used to release the buckle of the lock mechanism C22 on the cord lock assembly C13, so that the portable unit C1 is separated from the lock reset unit C2. At this time, the portable unit C1 can be pulled out from the first slideway 210. The state of the portable unit C1 after being pulled out is as follows: Fig.21 Afterwards, the portable unit C1 can be wound and tied with the rope 300, as shown in FIG. Fig.31 As shown, assuming that the end of the rope 300 is to be fixed to the railing of the building roof, the portable unit C1 can be wound around the railing for at least one circle, and then the rope lock assembly C13 can be used to lock it on the rope 300, so that the rope 300 is wound and tied to the fixed object.

[0205] In some embodiments, Fig.21 As shown, the rope lock assembly C13 includes a locking hook C131, a locking hole C132 is formed in the locking hook C131, a side opening for the rope 300 to enter is provided on one side of the locking hole C132, and a blocking piece C133 for blocking the side opening (not marked in the figure) is hinged on the locking hook C131; wherein, a torsion spring is provided between the blocking piece C133 and the locking hook C131, and the torsion spring enables the blocking piece C133 to keep blocking the side opening, so that the rope 300 can enter the locking hole C132 from the outside, but is difficult to leave from the locking hole C132; it should be noted that the rope lock assembly C13 shown in this embodiment is a conventional rope lock structure, and in other embodiments, other rope lock structures that can be connected to the rope 300 can also be used.

[0206] In some embodiments, in order to facilitate the buckle connection between the locking mechanism C22 and the cord lock assembly C13, refer to Figure 22-25 The locking mechanism C22 comprises a locking tongue C221, the middle part of which is rotatably connected to the sliding base C21 via a hinge shaft C222, a hook portion C2211 for hooking the lock hole C132 of the cord lock assembly C13 is disposed on the side of the first end of the locking tongue C221, and a prying portion C2212 is formed on the second end of the locking tongue C221; a locking torsion spring C223 for driving the hook portion C2211 to approach the cord lock assembly C13 is disposed on the hinge shaft C222; the unlocking unit C3 is used to squeeze the prying portion C2212 to disengage the hook portion C2211 from the lock hole C132;

[0207] Among them, Fig.24 As shown, in the initial state, under the action of the lock torsion spring C223, the hook portion C2211 of the lock tongue C221 is hooked into the lock hole C132, so that the handheld unit C1 is connected to the lock reset unit C2; when the unlocking unit C3 squeezes the prying portion C2212, the lock tongue C221 will swing around the hinge axis C222, as shown in FIG. Fig.25 As shown, the hook portion C2211 leaves the lock hole C132, so that the portable unit C1 can be separated from the lock reset unit C2.

[0208] Among them, Fig.21 As shown, the side of the first slideway 210 is provided with an escape hole 220 for the lock tongue C221 to extend out. In this embodiment, the bracket, the portable unit C1 and the lock reset unit C2 are compact in structure, avoiding adding unnecessary space in the first slideway 210, which is conducive to reducing the volume of the portable aerial work lifter.

[0209] Preferably, reference Figure 23-25The sliding base C21 is provided with a second slideway C211 having the same length direction as the first slideway 210. The second slideway C211 is provided with an opening at one end close to the cord lock assembly C13. A top block C212 is slidably provided in the second slideway C211. The second slideway C211 is further provided with a sixth elastic member C213 for pushing the top block C212 close to the cord lock assembly C13. The top block C212 is provided with a sixth elastic member C213 having a width greater than that of the second slideway C211 at one end away from the opening of the second slideway C211. In this embodiment, when the unlocking unit C3 is triggered, the hook C2211 leaves the lock hole C132, and the sixth elastic member C213 pushes the top block C212 out, so that the top block C212 pushes the rope lock assembly C13 outward to the first slideway 210; in this way, on the portable aerial work lifter, when the unlocking unit C3 is triggered, the hand-held unit C1 will pop up a short distance, so that the user can clearly feel that the unlocking has been successful, and the hand-held unit C1 can be pulled out;

[0210] In addition, if Fig.25 As shown, when the top block C212 is located in the second slideway C211 near the limit position of the cord lock assembly C13, the position of the hook portion C2211 of the lock tongue C221 is offset from the lock hole C132 and corresponds to the outer wall of the lock hook C131. In other words, after the top block C212 pushes the cord lock assembly C13 out, even if the unlocking unit C3 is released, the lock torsion spring C223 cannot make the hook portion C2211 buckle into the lock hole C132 again;

[0211] like Fig.23 As shown, the end face of the hook portion C2211 is formed with a matching inclined surface C2213. When the portable unit C1 is reinserted into the first slide 210, the lock of the cord lock assembly C13 squeezes the matching inclined surface C2213 of the hook portion C2211, causing the locking tongue C221 to swing, so that the hook portion C2211 is buckled into the locking hole C132 again, thereby fixing the portable unit C1.

[0212] In some embodiments, to facilitate unlocking, refer to Fig. 20 and Fig.23 The unlocking unit C3 includes an unlocking button C31, a connecting rod assembly C32 and a seventh elastic member C33; the unlocking button C31 is connected to the first end of the connecting rod assembly C32, and the second end of the connecting rod assembly C32 is located on the outside of the prying portion C2212; when the unlocking button C31 is pressed, the second end of the connecting assembly forms an extrusion fit with the prying portion C2212; the seventh elastic member C33 is used to drive the unlocking button C31 to reset.

[0213] Among them, the locking mechanism C22 can be unlocked by pressing the unlocking button C31; for ease of operation, the unlocking button C31 can be set on the surface of the housing 400 of the portable aerial work lift, and the connecting component is used to enable the unlocking button C31 to move in conjunction with the prying part C2212.

[0214] In some embodiments, to make the structure more compact, reference Figure 23-26 The inner wall of the first slide 210 is provided with a guide groove 230, and the length direction of the guide groove 230 is the same as the length direction of the first slide 210. Two symmetrical guide surfaces 231 are formed on the two side walls of the guide groove 230. The guide surfaces 231 are inclined, and the closer to the position of the rope lock component C13, the shorter the distance between the two guide surfaces 231; the fifth elastic member C23 includes a spiral elastic body C231, and the head end and the tail end of the spiral elastic body C231 respectively extend elastic arms C232, and the spiral elastic body C231 is arranged on the sliding base C21; the first elastic body is arranged in the guide groove 230, and the two elastic arms C232 are respectively abutted against the guide surfaces 231; wherein, when the fifth elastic member C23 moves toward the position of the rope lock component C13, the angle between the two elastic arms C232 becomes smaller.

[0215] Thus, the lock reset unit C2 can be reset to the bottom of the first slideway 210 by the cooperation of the two elastic arms C232 of the fifth elastic member C23 and the two guide surfaces 231 in the guide groove 230. This embodiment occupies a small space and makes the structure more compact.

[0216] In some embodiments, in order to improve the connection stability between the portable unit C1 and the rope 300, refer to Figure 27-30The rope fixing assembly C14 comprises a rope fixing base C141 and a rope pressing member C142; at least one rope releasing groove C1411 is recessed on both sides of the rope fixing base C141, and the rope releasing grooves C1411 on both sides are paired with each other, and a rope passing hole C1412 is provided between the two paired rope releasing grooves C1411 to achieve the connection between the two rope releasing grooves C1411, and at least one of the two paired rope releasing grooves C1411 is provided with a rope inlet hole C1413 connected to the outside on the side thereof; the rope pressing member C142 can be The rope pressing member C142 is detachably arranged in the rope releasing groove C1411, and includes a rope pressing drum C1421 and a convex column C1422 located in the middle of the first end of the rope pressing drum C1421; a rope pressing channel C1414 is formed between the bottom surface of the rope releasing groove C1411, the inner side wall of the rope releasing groove C1411, the end surface of the first end of the rope pressing drum C1421 and the outer side wall of the convex column C1422; the end surface of the first end of the rope pressing drum C1421 and the bottom surface of the rope releasing groove C1411 clamp the rope 300.

[0217] Among them, the end of the rope 300 enters from the rope entry hole C1413, then winds around the rope pressing channel C1414 in one of the rope releasing grooves C1411, and then enters the rope releasing groove C1411 on the other side through the rope passing hole C1412, and winds around the rope pressing channel C1414 again; the rope 300 itself does not overlap, so as to avoid the overlapping points of the rope 300 being easily cut off by stress; the rope pressing drum C1421 of the rope pressing member C142 can press the rope 300 tightly against the bottom surface of the rope releasing groove C1411, and one rope 300 is pressed tightly by two rope pressing members C142 to ensure a stable connection.

[0218] In the above solution, the interior of the carrying handle C11 is hollow, the rope fixing component C14 is arranged inside the carrying handle C11, and the carrying handle C11 is provided with an opening (not marked in the figure) corresponding to the position of the rope inlet hole C1413 of the rope fixing component C14. In this way, the carrying handle C11 has a beautiful structure and can also shield and protect the rope pressing member C142 to prevent the rope pressing member C142 from being affected by the outside world.

[0219] In the above solution, in order to facilitate installation, the rope pressing member C142 is fixed to the rope fixing base C141 by means of threaded fasteners.

[0220] Theoretically, the connecting arm C12 and the cord lock assembly C13 on the carrying handle C11 can be configured as one; however, in this embodiment, Fig.21 and Fig.31 As shown, the connecting arms C12 and the cord lock assembly C13 are provided at both ends of the carrying handle C11, so that the sense of balance is better when carrying.

[0221] In addition, according to the prior art CN112551413A, the rope 300 on the rope winding shaft 100 can be provided with multiple ropes, and even if some ropes 300 break, the hoisted object will not fall, thereby improving safety; Fig.31 In this embodiment, three ropes 300 are provided. The ropes 300 on both sides can be buckled on the rope lock components C13 on both sides respectively, and the middle rope 300 can be buckled on the rope lock component C13 on any side or not.

[0222] In summary, the present invention provides a portable aerial work lift, which mainly includes a frame, a rope winding shaft, a driving device, a rope arranging device, a rope output device, a hand-held rope buckle device and a control rocker arm. The driving device is used to provide lifting power. The driving device has a self-locking function and a clutch function. The self-locking function can stop the downward slide when the load is too heavy, and the clutch function can be manually lowered after the power is damaged; the rope arranging device is used to arrange the ropes neatly on the rope winding shaft, and the rope arranging function is realized by a one-way screw. The rope arranging process is smooth and no teeth get stuck; the rope output device can prevent the rope from loosening and affecting the rope arranging effect, and can identify whether the rope is loose; the hand-held rope buckle device has both hand-held and locking functions, and can be stored in the casing, with good concealment and high aesthetics; the control rocker arm is used to manually control the portable aerial work lift, which is convenient for users to operate flexibly at high altitudes.

[0223] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A portable aerial work lift, characterized in that: include: A rope winding shaft, the rope winding shaft is rotatably arranged on the frame, the rope winding shaft is hollow inside, a driving device for driving the rope winding shaft to rotate is arranged inside the rope winding shaft, and a rope is wound on the rope winding shaft; The driving device comprises: A coaxially arranged main shaft, an outward-rotating motor, a one-way bearing and a self-locking assembly; The outer rotor motor comprises an inner stator fixedly sleeved on the main shaft and an outer rotor rotatably arranged on the outer periphery of the inner stator; The one-way bearing comprises an inner ring body fixedly sleeved on the main shaft and an outer ring body unidirectionally rotatably arranged on the outer periphery of the inner ring body; The self-locking assembly includes a driving ring, a roller and a driven body; The driving ring is sleeved on the outer periphery of the one-way bearing, and the driving ring is fixedly connected to the outer rotor; the inner wall of the driving ring is concavely provided with a plurality of grooves, and the bottom surface of the groove is an inclined surface inclined along the circumferential direction, so that two sides of the groove form a relatively narrow part and a relatively wide part respectively; The roller is movably arranged in the groove; The driven body and the driving ring are coaxially arranged in sequence, and a plug post is arranged at one end of the driven body close to the driving ring; the plug post is inserted into the groove of the driving ring, and the plug post is located between the roller and the relatively wide part; the driven body is connected to the rope winding shaft; The diameter of the roller is smaller than the relatively wide portion, but greater than or equal to the relatively narrow portion; when the inner wall of the relatively wide portion, the plug post and the roller are in contact with each other in sequence, the roller is separated from the inclined surface and / or the outer peripheral wall of the outer ring body; the rotation direction of the outer ring body on the inner ring body is from the relatively narrow portion to the direction where the relatively wide portion is located; A rope arranging device, the rope arranging device is used to arrange the ropes regularly on the rope winding shaft; A rope-out device, the rope-out device being arranged at the opening at the top of the housing, and the rope-out device being used to provide a traction force for the rope to extend out of the housing; A hand-carrying rope buckle device, which is used to buckle the rope and provide a hand-carrying structure; A frame, wherein a safety strap is provided on the frame; The casing is arranged on the frame, and the top of the casing is provided with an opening for the rope to extend out.

2. The portable aerial work lift according to claim 1, characterized in that: The driving device further comprises a speed reduction mechanism, an output gear is provided at one end of the driven body away from the driving ring, and the output gear is transmission-connected to the speed reduction mechanism; The driven body comprises a first rotating body and a second rotating body coaxially arranged along the axial direction of the main shaft, the first rotating body and the second rotating body are fixedly connected and a cavity is formed therebetween, the output gear is coaxially rotatably connected to the first rotating body, and a clutch transmission member and a first elastic member are arranged in the cavity; The clutch transmission member includes a transmission shaft and a transmission plate fixedly connected to one end of the transmission shaft, and the transmission shaft is fixedly sleeved in the output gear so that the transmission shaft and the output gear are circumferentially fixed; The first elastic member provides elastic force for the transmission disc, so that a compression fit is formed between the transmission disc and the first rotating body; A hollow channel is formed in the main shaft, and a manual operating rod is slidably sleeved in the channel. The channel is connected to the cavity, and the manual operating rod is used to reduce the elastic force provided by the first elastic member to the transmission disk; when the first elastic member provides the maximum elastic force to the transmission disk, the transmission disk and the first rotating body are relatively fixed.

3. The portable aerial work lifter according to claim 2, characterized in that: A pressure plate is also arranged in the cavity of the driving device, and the pressure plate is located between the transmission plate and the second rotating body. A first brake pad is arranged between the transmission plate and the first rotating body, and a second brake pad is arranged between the transmission plate and the pressure plate. The first elastic member includes a substrate and a spring sheet extending radially from the center of the substrate, the spring sheet is inclined in the direction of the first rotating body, the free end of the spring sheet abuts against the pressure plate, the middle part of the spring sheet is connected to the second rotating body through a fixing pin, the manual operating rod squeezes the substrate to move the free end of the spring sheet away from the first rotating body; a second elastic member is provided in the channel to drive the manual operating rod away from the pressure plate.

4. The portable aerial work lifter according to claim 1, characterized in that: The rope arrangement device comprises: A screw rod, on which a one-way thread groove is provided, and is arranged parallel to the rope winding shaft; A slide, through which the rope on the rope winding shaft passes, the slide is threadedly connected to the screw, and the slide can move axially but is fixedly arranged on the screw along the circumferential direction; The first transmission path is composed of an odd number of gears connected in sequence, the gear at one end of which is connected to the screw rod, and the gear at the other end is defined as a first steering gear; The second transmission path is composed of a plurality of gears connected in sequence, the gear at one end of which is connected to the screw rod, and the gear at the other end is defined as a second steering gear; a direction-changing drive mechanism, comprising a steering drive gear capable of switching between the first steering gear and the second steering gear to drive one of them; the steering drive gear rotates synchronously with the rope winding shaft; The direction-changing drive mechanism further comprises: A direction-changing planetary carrier, on which a plurality of steering drive gears are arranged, and the steering drive gears serve as planetary gears on the direction-changing planetary carrier; A rope-arranging synchronous shaft rotates synchronously with the rope-winding shaft, and a direction-changing sun gear is sleeved on the shaft, and the direction-changing sun gear is meshed with the steering drive gear; An intermittent transmission mechanism, which is used to realize intermittent transmission between the rope-arranging synchronous shaft and the direction-changing planetary carrier; Wherein, a buffer mechanism is arranged between the rope arranging synchronous shaft and the direction-changing sun gear, and the buffer mechanism comprises at least one transmission groove recessed on the inner wall of the direction-changing sun gear, at least one transmission block convexly arranged on the outer wall of the rope arranging synchronous shaft, and an elastic buffer; The transmission block is arranged in the transmission groove, and in an initial state, a buffer space is formed between two side walls of the transmission block in the circumferential direction and two side walls of the transmission groove in the circumferential direction; The elastic buffer is used to apply an elastic pre-force to the direction-changing sun gear so as to restore the transmission block to a position in an initial state.

5. The portable aerial work lifter according to claim 4, characterized in that: The inner hole of the direction-changing sun gear includes a transmission hole section and a buffer hole section in sequence along the axial direction; The transmission groove is arranged in the transmission hole section; The inner wall of the buffer hole section is concavely formed with a buffer guide groove, and the buffer guide groove includes two guiding inclined surfaces; the edges of the two guiding inclined surfaces that are away from each other intersect with the inner wall of the buffer hole section, and the edges of the two guiding inclined surfaces that are close to each other intersect to form an abutting concave position; The rope arranging synchronous shaft is provided with a radially opened assembly hole; The elastic buffer member includes a top ball slidably arranged in the assembly hole and an eighth elastic member for driving the top ball away from the axis of the rope arrangement synchronization shaft, and the top ball rolls and abuts against the guide inclined surface of the buffer guide groove; In an initial state, the top ball is located at the abutment recess of the buffer guide groove.

6. The portable aerial work lift according to claim 1, characterized in that: The rope-discharging device comprises: A housing, a guide rope assembly, a rope tightening assembly, a rope output motor and a first sensor; The housing is arranged on the frame, and a rope inlet end and a rope outlet end are arranged on the housing; The guide rope assembly includes at least one driving guide wheel, at least one driven guide wheel and a first elastic member, wherein the driving guide wheel is rotatably arranged on the housing, and the driven guide wheel is movably arranged on the housing along a specified path, and a first rope passage for the rope to pass through is formed between the outer peripheral wall of the driving guide wheel and the outer peripheral wall of the driven guide wheel, and the third elastic member is used to push the driven guide wheel to approach the driving guide wheel; The rope tightening assembly is located at a side of the guide rope assembly close to the rope feed end, and the rope tightening assembly includes a guide column, a movable seat and a fourth elastic member; the movable seat is slidably arranged on the guide column, and a second rope passing channel is arranged on the movable seat, and the movable seat is configured to move in a first direction on the guide column under the force of the taut rope, and the fourth elastic member is used to apply an elastic force to the movable seat to move in a second direction on the guide column, and the first direction and the second direction are two opposite directions in the length direction of the guide column; The rope-discharging motor is transmission-connected to the driving guide wheel; The first sensor is used to detect the position of the moving seat on the guide rod, and the first sensor is electrically connected to the driving device.

7. The portable aerial work lifter according to claim 6, characterized in that: The rope-discharging device further includes a second sensor, a third sensor and a fourth sensor; The second sensor is fixed on the housing, and a second sensed member is arranged outside the driven guide wheel; when the driven guide wheel approaches the driving guide wheel to a certain distance, the second sensor senses the second sensed member; The third sensor is fixed on the housing, and the third sensor is electrically connected to the rope-discharging motor; when the driven guide wheel is away from the driving guide wheel to a certain distance, the third sensor senses the second sensed member, and the third sensor triggers the rope-discharging motor to stop working; The fourth sensor is arranged at the rope outlet end of the shell, and a third sensed component is arranged at the end of the rope. The fourth sensor is used to sense the third sensed component. When the fourth sensor senses the third sensed component, the fourth sensor triggers the driving device to stop working.

8. The portable aerial work lifter according to claim 1, characterized in that: The portable rope buckle device comprises: A handheld unit, a lock reset unit, and an unlocking unit; The frame is provided with a first slideway; The portable unit comprises a portable handle, a connecting arm is connected to the portable handle, a rope lock assembly is connected to one end of the connecting arm away from the portable handle, and a rope fixing assembly for connecting a rope is arranged on the portable handle; the rope lock assembly and at least part of the connecting arm are slidably arranged in the first slideway; The lock reset unit is slidably disposed in the first slideway, and the lock reset unit includes a sliding base, on which a lock mechanism and a fifth elastic member are disposed, the lock mechanism is snap-connected with the rope lock assembly, and the fifth elastic member is used to provide a force for the sliding base to move toward the bottom end of the first slideway; The unlocking unit is used to disengage the locking mechanism and the cord lock assembly.

9. The portable aerial work lifter according to claim 8, characterized in that: The rope lock assembly comprises a lock hook, a lock hole is formed in the lock hook, a side opening is provided on one side of the lock hole for the rope to enter, and a blocking piece for blocking the side opening is hinged on the lock hook; The lock mechanism comprises a lock tongue, the middle part of which is rotatably connected to the sliding base through a hinge shaft, a hook portion for hooking the lock hole of the cord lock assembly is arranged on the side of the first end of the lock tongue, and a prying portion is formed on the second end of the lock tongue; a lock torsion spring for driving the hook portion to approach the cord lock assembly is arranged on the hinge shaft; The unlocking unit is used to squeeze the prying portion to make the hook portion disengage from the lock hole; The side surface of the first slideway is provided with an escape hole for the locking tongue to extend out.

10. The portable aerial work lift according to claim 9, characterized in that: The sliding base is provided with a second slideway having the same length direction as the first slideway, the second slideway is provided with an opening at one end close to the rope lock assembly, a top block is slidably provided in the second slideway, and a sixth elastic member for pushing the top block close to the rope lock assembly is also provided in the second slideway; a limit block having a width greater than the opening of the second slideway is provided at one end of the top block away from the opening of the second slideway; When the top block is located in the second slideway at the extreme position close to the cord lock assembly, the position of the hook portion of the locking tongue is staggered from the locking hole and corresponds to the outer wall of the locking hook.

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