hoist

Abstract

This invention provides a hoist, comprising: a frame; a drive assembly mounted on the frame and having a drive shaft; a support sleeve assembly with a first one-way clutch at one end facing the drive assembly, the first one-way clutch being connected to the frame; and a drum rotatably connected to the support sleeve assembly, a traction rope wound around its peripheral wall, at least a portion of which is wound around the drive assembly; the drum has a rope-unwinding state and a rope-rewinding state; in the rope-unwinding state, the drum rotates relative to the support sleeve assembly under the drive of the traction rope, and the first one-way clutch engages to fix the support sleeve assembly to the frame; in the rope-rewinding state, the drive shaft drives the support sleeve assembly to rotate relative to the frame, and drives the drum to wind the traction rope. The hoist provided by this invention improves the stability and reliability of the hoist, and enhances the safety of its operation.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a hoist. Background Technology

[0002] A hoist typically consists of a motor, a traction reducer, and control equipment. The hoist moves up and down along a wire rope by driving a pressure plate. At the end of the hoist, a certain weight of counterweight is fixed to the wire rope, which hangs freely and can easily damage other equipment, affecting the quality of the project.

[0003] In related technologies, there is a hoist with a rope winding and unwinding device. During the hoisting or lifting process, for example during the rope winding process, the wire rope is wound around the hoist's rope winding and unwinding device, and during the rope unwinding process, the wire rope is released from the hoist's rope winding and unwinding device.

[0004] However, the stability and reliability of the hoists in the relevant technologies are poor, and their safety during use is low. Summary of the Invention

[0005] This invention provides a hoist to address the shortcomings of poor stability and reliability, and low safety of hoists in related technologies; it can improve the stability and reliability of the hoist and enhance the safety of the hoist during use.

[0006] This invention provides a hoist, comprising:

[0007] frame;

[0008] A drive assembly, the drive assembly being mounted on the frame, and the drive assembly having a drive shaft;

[0009] A support sleeve assembly, wherein a first one-way clutch is provided at one end of the support sleeve assembly facing the drive assembly, and the first one-way clutch is connected to the frame;

[0010] A drum is rotatably connected to the support sleeve assembly with resistance. A traction rope is wound around the peripheral wall of the drum, and at least a portion of the traction rope is wound around the drive assembly. The drum has a rope-unwinding state and a rope-rewinding state.

[0011] In the unwinding state, the drum rotates relative to the support sleeve assembly under the drive of the traction rope, and the first one-way clutch engages to fix the support sleeve assembly to the frame; in the winding state, the drive shaft drives the support sleeve assembly to rotate relative to the frame and drives the drum to wind the traction rope.

[0012] According to a hoist provided by the present invention, the support sleeve assembly is further provided with a second one-way clutch at one end facing the drive assembly. The second one-way clutch is connected to the drive shaft, and the engagement direction of the second one-way clutch is opposite to that of the first one-way clutch.

[0013] During the rope winding state, the second one-way clutch engages, causing the drive shaft to drive the support sleeve assembly to rotate relative to the frame, and causing the drum to wind the traction rope.

[0014] According to a hoist provided by the present invention, the drive assembly includes:

[0015] A drive unit, which is mounted on the frame;

[0016] A pulley is provided, which is connected to the output shaft of the drive member. At least a portion of the traction rope is wound around the pulley. The drive shaft is connected to the pulley and is located on the side of the pulley facing away from the drive member. The second one-way clutch is sleeved on the drive shaft.

[0017] According to the present invention, the hoist further includes a connecting flange, which is connected to the frame;

[0018] The first one-way clutch is sleeved on the outer periphery of the connecting flange; the drive shaft passes through the connecting flange, and one end of the drive shaft facing away from the pulley extends to the outside of the connecting flange.

[0019] According to a hoist provided by the present invention, the support sleeve assembly is sleeved on the outer periphery of the first one-way clutch and the second one-way clutch, a spacer is provided between the first one-way clutch and the second one-way clutch, and the spacer is sleeved on the outer periphery of the drive shaft.

[0020] According to a hoist provided by the present invention, a first pressure plate and a fixing member are provided at one end of the drive shaft facing away from the first one-way clutch. The first pressure plate is pressed against the end face of the second one-way clutch, and the fixing member is sleeved on the drive shaft, and the fixing member is located on the side of the first pressure plate facing away from the second one-way clutch.

[0021] According to a hoist provided by the present invention, the drive assembly further includes: a speed reduction hoist, the speed reduction hoist being connected to the output shaft of the drive component, and the sheave being connected to the speed reduction hoist.

[0022] According to a hoist provided by the present invention, the drum and the support sleeve assembly are connected by frictional rotation.

[0023] According to a hoist provided by the present invention, at least one side of the drum is provided with a friction plate, and a stop member is provided on the side of the friction plate facing away from the drum. The stop member abuts against the friction plate, and the stop member is fixed relative to the support sleeve assembly.

[0024] According to a hoist provided by the present invention, the friction plate is located on the side of the drum opposite to the drive assembly, the abutting member is a columnar spring, the columnar spring is sleeved on the outer periphery of the support sleeve assembly, one end of the columnar spring abuts against the friction plate, and the other end of the columnar spring is connected to the support sleeve assembly.

[0025] According to a hoist provided by the present invention, a second pressure plate and an adjusting member are provided at one end of the columnar spring facing away from the friction plate, the second pressure plate is pressed against the end of the columnar spring; the adjusting member is located on the side of the second pressure plate facing away from the columnar spring, and the adjusting member is threadedly connected to the peripheral wall of the support sleeve assembly.

[0026] According to a hoist provided by the present invention, the length of the external thread on the peripheral wall of the support sleeve assembly along the axial direction of the support sleeve assembly is greater than the length of the adjusting member along the axial direction of the support sleeve assembly.

[0027] According to a hoist provided by the present invention, a protective sleeve is provided around the outer periphery of the columnar spring, and the protective sleeve is located between the friction plate and the second pressure plate.

[0028] According to a hoist provided by the present invention, the friction plate is provided with third pressure plates on both sides along the axial direction, and the friction plate is pressed between the two third pressure plates.

[0029] This invention provides a hoist that features a drive assembly mounted on a frame, with a drive shaft on the drive assembly. A support sleeve assembly is connected to the frame via a first one-way clutch, and a drum is rotatably mounted on the support sleeve assembly. A portion of the traction rope is wound around the drive assembly and then onto the drum. During rope release from the drum, the first one-way clutch engages, and the support sleeve assembly is fixed to the frame as a single unit. This prevents the support sleeve assembly from rotating with the drum or traction rope during release. Furthermore, the drum and support sleeve assembly are connected with resistance to rotation, and the release of the traction rope is gradual. This ensures that the traction rope remains taut or straight throughout the release process, preventing the rotation of the support sleeve assembly from increasing the amount of rope released and causing a sudden, rapid descent during the hoist's descent. This improves the stability of the rope release process and ensures the safety of the hoist's operation. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a hoist provided in an embodiment of the present invention;

[0032] Figure 2 This is a partial sectional view of the hoist provided in an embodiment of the present invention;

[0033] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle;

[0034] Figure 4 This is a front view of the hoist provided in an embodiment of the present invention;

[0035] Figure 5 This is another structural schematic diagram of the hoist provided in an embodiment of the present invention.

[0036] Figure label:

[0037] 10-Frame; 20-Drive assembly; 30-Support sleeve assembly; 40-First one-way clutch; 50-Drum; 60-Traction rope; 70-Second one-way clutch; 80-Connecting flange; 90-Reduction hoist; 100-Rope arrangement mechanism; 110-Rope guide; 120-Safety locking assembly; 130-Control box; 140-Hook;

[0038] 201-Drive shaft; 202-Drive component; 301-Spacer; 302-First pressure plate; 303-Fixing component; 304-Pin shaft; 501-Friction pad; 502-Abutting component; 503-Second pressure plate; 504-Adjusting component; 505-Sheath; 506-Thrust component; 507-Third pressure plate; 508-Traction rope fixing seat; 1201-Brake handle; 1301-Upward control component; 1302-Downward control component; 1303-Pause control component. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0040] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0042] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Figure 1 This is a schematic diagram of a hoist provided in an embodiment of the present invention. Figure 2This is a partial sectional view of the hoist provided in an embodiment of the present invention. Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0045] Reference Figures 1-3 As shown, in view of the technical problems existing in the related technologies, the present invention provides a hoist, including: a frame 10, a drive assembly 20, a support sleeve assembly 30 and a drum 50.

[0046] Specifically, in this embodiment of the invention, the frame 10 can be the supporting skeleton of the overall hoist. In some examples, a protective shell is typically provided around the drive component 20; therefore, the frame 10 can also be the outer shell of the drive component 20. Of course, in other optional examples, the protective shell of the drive component 20 can also be connected to the frame 10. It is understood that in this embodiment of the invention, the frame 10 can be made of alloy materials such as stainless steel, aluminum alloy, and titanium alloy. In some optional examples, the frame 10 can also be made of metal materials such as cast iron and copper.

[0047] It is also understood that the hoist provided in this embodiment of the invention can be used to lift the suspended platform for high-altitude operations. Therefore, in this embodiment of the invention, the frame 10 can be used to fix it to the suspended platform. In this case, the frame 10 can be provided with fixing holes for fixing to the suspended platform.

[0048] Specifically, in this embodiment of the invention, the drive assembly 20 is mounted on the frame 10. In a specific configuration, the drive assembly 20 can be fixedly connected to the frame 10 via bolts, screws, or threaded rods. It is understood that the drive assembly 20 typically has a drive shaft 201, which rotates under the drive of the drive assembly 20, thereby driving the various components connected to the drive shaft 201.

[0049] In this embodiment of the invention, the support sleeve assembly 30 can specifically serve as a connecting shaft between the drum 50 and the drive shaft 201, that is, one end of the support sleeve assembly 30 is connected to the drive shaft 201 and rotates under the drive of the drive shaft 201. The drum 50 can be connected to the support sleeve assembly 30, so that when the support sleeve assembly 30 rotates, it drives the drum 50 to rotate and winds part of the traction rope 60 wound on the drive assembly 20 onto the drum 50.

[0050] As a specific example, in this embodiment of the invention, the traction rope 60 can be a steel wire rope, such as a braided steel wire rope. In other specific examples of this embodiment, the traction rope 60 can also be a chain or a braided belt.

[0051] In specific configurations, the drum 50 and the support sleeve assembly 30 can be rotatably connected. For example, the drum 50 can rotate with damped rotation relative to the support sleeve assembly 30, or in some examples, the drum 50 and the support sleeve assembly 30 can rotate with friction. Additionally, it is understood that in some optional embodiments of this invention, the drum 50 and the support sleeve assembly 30 can also be rotatably connected via a ratchet. Thus, during the rope winding process, the drive assembly 20 winds the traction rope 60, which is fed into the drum 50 by the drive assembly 20. The drive shaft 201 drives the support sleeve assembly 30 to rotate, and the support sleeve assembly 30 drives the drum 50 to rotate through damping or friction, thereby winding the traction rope 60 delivered by the drive assembly 20 onto the drum 50. This facilitates the winding of the traction rope 60 of the hoist or elevator, effectively preventing the traction rope 60 from affecting the quality of the project.

[0052] It is understood that, in this embodiment of the invention, the drum 50 may be sleeved on the outer periphery of the support sleeve assembly 30 and rotatably connected to the support sleeve assembly 30. In some alternative examples, the drum 50 may also be partially inserted into the support sleeve assembly 30 and the other part located on the outer periphery of the support sleeve assembly 30, thereby realizing the rotatable connection between the drum 50 and the support sleeve assembly 30.

[0053] In addition, in this embodiment of the invention, a first one-way clutch 40 is provided at the end of the support sleeve assembly 30 facing the drive assembly 20, and the first one-way clutch 40 is connected to the frame 10. Here, the engagement direction of the first one-way clutch 40 can specifically be the process of the hoist releasing the rope (i.e., the first one-way clutch 40 engages during the process of the drum 50 releasing the rope), so that the support sleeve assembly 30 and the frame 10 form a rigidly connected integral structure.

[0054] In other words, in this embodiment of the invention, during the rope unwinding process of the drum 50, the first one-way clutch 40 engages, at which time the support sleeve assembly 30 is fixed; the drive assembly 20 gradually pulls the traction rope 60 out of the drum 50 during rotation, thereby realizing the rope unwinding process. It can be understood that in this embodiment of the invention, the drum 50 and the support sleeve assembly 30 are rotatably connected. Thus, during the process of the drive assembly 20 pulling the traction rope 60 out of the drum 50, the traction rope 60 can drive the drum 50 to rotate, gradually releasing the traction rope 60 wound on the drum 50. This prevents a sudden large release of the traction rope 60 due to the rotation of the support sleeve assembly 30. In other words, the traction rope 60 remains taut or straight throughout the entire unwinding process, improving stability and safety during the unwinding process.

[0055] As a specific example of an embodiment of the present invention, the first one-way clutch 40 can specifically be a one-way bearing or a ratchet. In this embodiment, a one-way bearing is used as a specific example. The inner ring of the one-way bearing can be fitted onto either the frame 10 or the support sleeve assembly 30; additionally, the other of the frame 10 and the support sleeve assembly 30 can be fitted onto the outer ring peripheral wall of the one-way bearing, thereby achieving the connection between the support sleeve assembly 30 and the frame 10.

[0056] The present invention provides a hoist, which includes a drive assembly 20 mounted on a frame 10, and a drive shaft 201 mounted on the drive assembly 20. A support sleeve assembly 30 is connected to the frame 10 via a first one-way clutch 40, and a drum 50 is rotatably mounted on the support sleeve assembly 30. A portion of the traction rope 60 is wound around the drive assembly 20 and then onto the drum 50. During the rope unwinding process of the drum 50, the first one-way clutch 40 engages, and the support sleeve assembly 30 is fixed to the frame 10 as a whole via the first one-way clutch 40. During the rope release process, the support sleeve assembly 30 will not rotate with the movement of the drum 50 or the traction rope 60. Furthermore, the drum 50 and the support sleeve assembly 30 are connected with resistance to rotation. The release of the traction rope 60 by the drum 50 is gradual, which ensures that the traction rope 60 remains taut or straight throughout the entire rope release process. This prevents the rotation of the support sleeve assembly 30 from causing an increase in the amount of rope released from the traction rope 60, which could lead to a sudden and rapid descent of the hoist during the rope release process. In other words, it improves the stability of the hoist's rope release process and ensures the safety of the hoist's operation.

[0057] As an optional example of an embodiment of the present invention, refer to Figure 3 As shown, the support sleeve assembly 30 is also provided with a second one-way clutch 70 at the end facing the drive assembly 20. The second one-way clutch 70 is connected to the drive shaft 201, and the engagement direction of the second one-way clutch 70 is opposite to that of the first one-way clutch 40.

[0058] Specifically, in this embodiment of the invention, the second one-way clutch 70 may be the same as the first one-way clutch 40, both employing one-way bearings. Of course, in some examples, the second one-way clutch 70 may also be a ratchet.

[0059] In specific configurations, in this embodiment of the invention, the engagement directions of the second one-way clutch 70 and the first one-way clutch 40 can be set to opposite directions. For example, in this embodiment of the invention, the first one-way clutch 40 engages when the drum 50 is in the unwinding state, at which time the second one-way clutch 70 can be in an idle state, that is, at this time the second one-way clutch 70 only acts as a bearing, connecting the drive shaft 201 and the support sleeve assembly 30. The rotation of the drive shaft 201 will not affect the support sleeve assembly 30, and the support sleeve assembly 30 does not rotate with the rotation of the drive shaft 201. When the drum 50 is in the winding state, the first one-way clutch 40 can be in an idle state, while the second one-way clutch 70 engages. At this time, the drive shaft 201 and the support sleeve assembly 30 are rigidly connected through the second one-way clutch 70. The drive shaft 201 drives the support sleeve assembly 30 to rotate, and the support sleeve assembly 30 drives the drum 50 to rotate, thereby winding the traction rope 60 conveyed by the drive assembly 20 onto the drum 50, which facilitates the winding and winding of the traction rope 60.

[0060] In this embodiment of the invention, a second one-way clutch 70 is provided between the drive shaft 201 and the support sleeve assembly 30. When the drum 50 is in the rope winding state, the second one-way clutch 70 engages, thereby driving the drum 50 to rotate and achieve rope winding. In other words, in this embodiment of the invention, the support sleeve assembly 30 is connected to the frame 10 by providing a first one-way clutch 40. In addition, the support sleeve assembly 30 is connected to the drive shaft 201 by providing a second one-way clutch 70. This achieves the fixation and rotation of the support sleeve assembly 30 under two different working conditions: rope winding and rope unwinding. This improves the stability of the hoist traction rope 60 during rope winding and unwinding, thus improving the safety of the hoist operation.

[0061] In an optional example of an embodiment of the present invention, refer to Figure 1 and Figure 2 As shown, the drive assembly 20 includes a drive element 202 and a pulley (not shown in the figure).

[0062] Specifically, in this embodiment of the invention, the drive component 202 can be mounted and fixed on the frame 10, for example, by means of connecting components such as bolts, screws or threaded rods.

[0063] As specific examples, the drive element 202 can be a motor capable of both forward and reverse rotation. For instance, in some examples, the drive element 202 can be a synchronous motor, a stepper motor, or a servo motor.

[0064] In a specific configuration, the pulley can be connected to the output shaft of the drive unit 202. It is understood that, typically, a reduction mechanism (also commonly referred to as a reduction hoist 90) can be connected to the output shaft of the drive unit 202, and the pulley can be specifically mounted on the reduction hoist 90.

[0065] Understandably, the traction rope 60 can be wound around the circumferential wall of the sheave. In some specific examples, a V-shaped groove can be provided on the circumferential wall of the sheave, and the traction rope 60 can be wound inside the V-shaped groove. In addition, the traction rope 60 can be wound around the circumferential wall of the sheave at least once. Of course, in some examples, the traction rope 60 can also be wound around the circumferential wall of the sheave multiple times. In this way, when the drive member 202 drives the sheave to rotate, the sheave pulls / stretches the traction rope 60 through the friction between the sheave and the traction rope 60, thereby causing the sheave to move along the traction rope 60, realizing the lifting of the hoist (e.g., the rope winding process) or the lowering of the hoist (e.g., the rope unwinding process).

[0066] It is also understandable that, referring to Figure 1 and Figure 2 As shown, in some optional examples of embodiments of the present invention, the hoist can also be used to lift heavy objects. In this case, the hoist can be placed upside down, for example, according to... Figure 1 and Figure 2 As shown in the diagram, the traction rope 60 is positioned with its end pointing downwards, and the hoist is installed and fixed at a high location. During the rope winding process, the traction rope 60 lifts the weight from the ground to a higher position; during the rope unwinding process, the weight is lowered back to the ground.

[0067] In this embodiment of the invention, the drive shaft 201 can be specifically disposed on the side of the rope pulley facing away from the drive member 202. In a specific configuration, the drive shaft 201 can be fixedly connected to the rope pulley. For example, in some examples, the drive shaft 201 can be fixedly connected to the rope pulley using connecting components such as bolts, screws, or threaded rods. Of course, in other optional examples, the drive shaft 201 can be an integral structure with the rope pulley. It should be noted that the drive shaft 201 and the rope pulley can be coaxial, that is, the rotation axis of the drive shaft 201 is collinear or approximately collinear with the rotation axis of the rope pulley.

[0068] Understandably, the second one-way clutch 70 can be fitted onto the drive shaft 201. For example, the inner ring of the one-way bearing is fitted onto the drive shaft 201.

[0069] In this embodiment of the invention, a drive member 202 is provided on the frame 10, a rope wheel is provided on the output shaft of the drive member 202, and a drive shaft 201 is provided on the side of the rope wheel facing away from the drive member 202. A second guide clutch is sleeved on the drive shaft 201. In this way, the rope wheel can drive the support sleeve assembly 30 to rotate through the drive shaft 201 and the second one-way clutch 70 during the rotation process, thereby driving the drum 50 to rotate. This facilitates the winding and storage of the traction rope 60 during the rope lifting process, improves the convenience of winding and storing the traction rope 60, and can effectively improve the quality of the project.

[0070] In an optional example of an embodiment of the present invention, refer to Figure 3As shown, the hoist provided in this embodiment of the invention also includes a connecting flange 80, which is connected to the frame 10.

[0071] As a specific example of an embodiment of the present invention, the frame 10 can also be the housing of the speed reducer 90 in the foregoing embodiments of the present invention. That is, the connecting flange 80 can be specifically connected to the housing of the speed reducer 90. It is understood that the connecting flange 80 and the housing of the speed reducer can be fixedly connected by connecting components such as bolts, screws or threaded rods.

[0072] In this embodiment of the invention, the first one-way clutch 40 is sleeved on the outer periphery of the connecting flange 80; the drive shaft 201 passes through the connecting flange 80, and the end of the drive shaft 201 facing away from the pulley extends to the outside of the connecting flange 80.

[0073] In other words, in this embodiment of the invention, the inner ring of the first one-way clutch 40 is fitted onto the outer peripheral wall of the connecting flange 80, which facilitates the connection between the first one-way clutch 40 and the frame 10.

[0074] In a specific configuration, in this embodiment of the invention, a bearing may be provided between the peripheral wall of the drive shaft 201 and the inner wall of the connecting flange 80. As a specific example, the bearing between the peripheral wall of the drive shaft 201 and the inner wall of the connecting flange 80 can be a deep groove ball bearing. This reduces friction between the connecting flange 80 and the drive shaft 201, facilitating the rotation of the drive shaft 201 and improving energy utilization. Furthermore, the connecting flange 80 provides support for the drive shaft 201, enhancing the stability of its rotation, thus improving the stability and reliability of the hoist and enhancing its safety.

[0075] In addition, in this embodiment of the invention, the end of the drive shaft 201 extends to the outside of the connecting flange 80; that is, the length of the drive shaft 201 is greater than the length of the connecting flange 80; this facilitates the installation and fixing of the second one-way clutch 70 and improves the installation and fixing efficiency of the second one-way clutch 70.

[0076] Continue to refer to Figure 3 As shown, in some optional examples of the embodiments of the present invention, the support sleeve assembly 30 is sleeved on the outer periphery of the first one-way clutch 40 and the second one-way clutch 70, and a spacer 301 is provided between the first one-way clutch 40 and the second one-way clutch 70, and the spacer 301 is sleeved on the outer periphery of the drive shaft 201.

[0077] Specifically, in this embodiment of the invention, the spacer 301 can be a bearing spacer. In some examples, the spacer 301 can be made of materials such as stainless steel, aluminum alloy, or titanium alloy. In other optional examples, the spacer 301 can also be made of ceramic sheet or composite material.

[0078] In a specific configuration, the first one-way clutch 40 can be fitted onto the outer peripheral wall of the connecting flange 80 first, then the spacer 301 can be fitted onto the outer peripheral wall of the drive shaft 201, and then the second one-way clutch 70 can be fitted onto the outer peripheral wall of the drive shaft 201; thus completing the installation of the first one-way clutch 40 and the second one-way clutch 70; then the support sleeve assembly 30 can be fitted onto the outer peripheral wall of the first one-way clutch 40, the spacer 301 and the second one-way clutch 70, thus realizing the installation and connection of the support sleeve assembly 30, thereby encapsulating the first one-way clutch 40 and the second one-way clutch 70.

[0079] In this embodiment of the invention, a spacer 301 is provided between the first one-way clutch 40 and the second one-way clutch 70. This avoids mutual interference between the first one-way clutch 40 and the second one-way clutch 70, ensuring that the first one-way clutch 40 is engaged when releasing the rope and the second one-way clutch 70 is engaged when retracting the rope. The first one-way clutch 40 and the second one-way clutch 70 operate under their own independent working conditions, which can ensure the independence and stability of the first one-way clutch 40 and the second one-way clutch 70, thereby improving the stability of the hoist operation.

[0080] Continue to refer to Figure 3 As shown, in some optional examples of the embodiments of the present invention, the drive shaft 201 is provided with a first pressure plate 302 and a fixing member 303 at one end facing away from the first one-way clutch 40. The first pressure plate 302 is pressed against the end face of the second one-way clutch 70, and the fixing member 303 is sleeved on the drive shaft 201, and the fixing member 303 is located on the side of the first pressure plate 302 facing away from the second one-way clutch 70.

[0081] Specifically, in this embodiment of the invention, the first pressure plate 302 is pressed against at least the inner ring end face of the second one-way clutch 70. The first pressure plate 302 is also commonly referred to as a bearing end cap or bearing cover, that is, the first pressure plate 302 serves to fix and limit the second one-way clutch 70. In a specific configuration, the first pressure plate 302 can be an annular sheet-like or plate-like structure.

[0082] Additionally, a fixing member 303 may be provided on the side of the first pressure plate 302 facing away from the second one-way bearing. Specifically, the end of the drive shaft 201 may be provided with an external thread, and the fixing member 303 may be provided with an internal thread. That is, the fixing member 303 is connected to the end of the drive shaft 201 through the thread, thereby pressing the first pressure plate 302 against the end face of the second one-way clutch 70 and limiting and fixing the second one-way clutch 70. It is understood that in this embodiment of the invention, the fixing member 303 may be a nut or a bolt.

[0083] In this embodiment of the invention, a first pressure plate 302 and a fixing member 303 are provided at one end of the drive shaft 201 facing away from the first one-way clutch 40. The first pressure plate 302 presses against the end face of the second one-way clutch 70 facing away from the first one-way clutch 40, and the fixing member 303 is fixed to the end of the drive shaft 201, and the fixing member 303 is located on the side of the first pressure plate 302 facing away from the second one-way clutch 70. In this way, it is convenient to fix and assemble the first one-way clutch 40 and the second one-way clutch 70, and the assembly efficiency of the first one-way clutch 40 and the second one-way clutch 70 is improved.

[0084] In an optional example of an embodiment of the present invention, refer to Figure 3 As shown, the fastener 303 is provided with a first through port, and the drive shaft 201 is provided with a second through port along the radial direction; a pin 304 is inserted into the first through port and the second through port, and the pin 304 is used to fix the fastener 303.

[0085] Specifically, in this embodiment of the invention, the first through port can penetrate the fixing member 303 radially; wherein, when the fixing member 303 fixes the first pressure plate 302 and the second one-way clutch 70, the position of the first through port matches the external position of the second through port; that is, the first through port and the second through port are connected, so that the pin 304 can pass through the first through port and the second through port in sequence.

[0086] As an optional example of the present invention, the first passage can be a perforation. In specific settings, multiple perforations arranged at intervals can be provided along the circumference of the fixing member 303, which facilitates the matching of the positions of the first passage and the second passage.

[0087] In this embodiment of the invention, a first passage is provided on the fixing member 303, and a second passage is provided radially on the driving member 202. A pin 304 is inserted through the first and second passages. After the fixing member 303 fixes the first pressure plate 302, the second one-way clutch 70, and the first one-way clutch 40, the pin 304 can be sequentially passed through the first and second passages. When the driving shaft 201 rotates, the pin 304 can limit the fixing member 303, preventing relative rotation between the fixing member 303 and the driving shaft 201. This effectively prevents the fixing member 303 from loosening and falling off, improving the stability of the installation and fixing of the first one-way clutch 40 and the second one-way clutch 70, and thus improving the stability of the hoist in use.

[0088] As a specific example of an embodiment of the present invention, the fastener 303 is a slotted nut, and the first passage includes the slot of the slotted nut.

[0089] Specifically, the slotted nut can have multiple slots along its circumference, with these slots spaced apart. In a specific configuration, the pin 304 can be inserted along the slot of the slotted nut and into the second through-hole.

[0090] In some optional examples of embodiments of the present invention, the slot of the slotted nut may be positioned away from the first pressure plate 302. It is understood that in other optional examples of embodiments of the present invention, the slot of the slotted nut may also be positioned facing the first pressure plate 302.

[0091] In this embodiment of the invention, the fixing member 303 is configured as a slotted nut; this facilitates the insertion of the pin 304 from the first through-hole into the second through-hole, improving the installation efficiency of the pin 304, and thus improving the overall installation efficiency of the hoist. Furthermore, the slotted nut facilitates the machining of the first through-hole, improving the machining and production efficiency of the hoist.

[0092] In another optional example of the present invention, the roll 50 is frictionally rotatably connected to the support sleeve assembly 30.

[0093] Specifically, in this embodiment of the invention, the drum 50 can be sleeved on the outer peripheral wall of the support sleeve assembly 30. In a specific configuration, the drum 50 can be directly sleeved on the outer peripheral wall of the support sleeve assembly 30, and the drum 50 can be rotatably connected by friction between the inner peripheral wall of the drum 50 and the outer peripheral wall of the support sleeve assembly 30. In some optional examples, a rubber pad / rubber layer can be sleeved on the outer peripheral wall of the support sleeve assembly 30, and then the drum 50 can be sleeved on the rubber pad / rubber layer, thereby increasing the friction between the drum 50 and the support sleeve assembly 30 through the rubber pad or rubber layer.

[0094] It is understood that in this embodiment of the invention, during the rope release process of the hoist, the weight of the sheave or the basket pulls the traction rope 60 off the drum 50, and the drum 50 rotates relative to the support sleeve assembly 30 under the pull of the traction rope 60. It is understood that at the beginning of rope release, because the traction ropes 60 wound on the drum 50 overlap, the winding diameter of the outer traction rope 60 is larger than the diameter of the sheave, while the amount of traction rope 60 released remains unchanged. That is, the linear velocities of the sheave and the drum 50 are the same, resulting in different angular velocities between the sheave and the drum 50, with the angular velocity of the drum 50 being less than that of the sheave. In this embodiment of the invention, by connecting the drum 50 and the support sleeve assembly 30 through frictional rotation, it is ensured that the drum 50 can only rotate when the tension of the traction rope 60 is greater than the resistance of frictional rotation. This ensures that the traction rope 60 on the drum 50 is always taut or taut, preventing slippage of the traction rope 60 on the sheave due to excessive rope release, thus ensuring safety during the process.

[0095] Additionally, it can be understood that during the rope winding process of the hoist, the rope sheave drives the support sleeve assembly 30 via the drive shaft 201. The support sleeve assembly 30 transmits rotational torque to the drum 50 through friction, causing the drum 50 to rotate. At this time, the rotation of the drum 50 is synchronized with the rope sheave, meaning the angular velocity of the rope sheave is the same as the angular velocity of the drum 50. As the traction rope 60 winds around the drum 50, the diameter of the drum 50 is larger than the diameter of the rope sheave, and the linear velocity of the drum 50 is greater than the linear velocity of the rope sheave. In other words, the traction rope 60 that the drum 50 needs to wind... As rope 60 increases, the traction rope 60 raised by the rope wheel is insufficient to provide winding for drum 50. The traction rope 60 on drum 50 is taut and straightened, pulling drum 50. When the tension of traction rope 60 is greater than the friction between drum 50 and support sleeve assembly 30, slippage occurs between drum 50 and support sleeve assembly 30, thereby releasing the excess demand of drum 50 on traction rope 60. This ensures that traction rope 60 remains taut or straight during rope winding, preventing traction rope 60 from loosening or coming off, and improving the stability of the rope winding process.

[0096] In this embodiment of the invention, the drum 50 and the support sleeve assembly 30 are configured to rotate by friction; in addition, the support sleeve assembly 30 is connected to the frame 10 through a first one-way clutch 40 and to the drive shaft 201 through a second one-way clutch 70; thus, the tension or straightness of the traction rope 60 can be ensured during the rope winding and unwinding processes, thus ensuring the stability and safety of the hoist operation.

[0097] Reference Figure 3 As shown, in some alternative examples of embodiments of the present invention, at least one side of the drum 50 is provided with a friction plate 501, and the side of the friction plate 501 facing away from the drum 50 is provided with a stop member 502, the stop member 502 abuts against the friction plate 501, and the stop member 502 is fixed relative to the support sleeve assembly 30.

[0098] As a specific example, the abutment 502 can be a component such as a pneumatic cylinder, hydraulic cylinder, or electric cylinder.

[0099] In this embodiment of the invention, the friction plate 501 can be a rubber sheet, a rubber pad, or a silicone pad, etc. Specifically, the friction plate 501 can be configured as a circular or annular sheet structure. The friction plate 501 can be sleeved on the outer periphery of the support sleeve assembly 30; the abutting member 502 can press the friction plate 501 against at least one end face of the drum 50 along the circumference of the support sleeve assembly 30.

[0100] In some specific examples, the friction plate 501 may be disposed on the side of the drum 50 facing the drive assembly 20; or, in other optional examples of the embodiments of the present invention, the friction plate 501 may also be disposed on the side of the drum 50 facing away from the drive assembly 20. Of course, in other optional examples, the friction plate 501 may also be disposed on both sides of the drum 50.

[0101] In this embodiment of the invention, by placing the friction plate 501 on at least one side of the drum 50 and then abutting the friction plate 501 with the abutting member 502, friction force is provided between the support sleeve assembly 30 and the drum 50. This facilitates the installation of the friction plate 501. In addition, it also facilitates the adjustment of the magnitude of the friction force according to the lifting requirements, thereby improving the adaptability and adjustability of the hoist to lift heavy objects.

[0102] In a specific example of an embodiment of the present invention, refer to Figure 3 As shown, the friction plate 501 is located on the side of the drum 50 facing away from the drive assembly 20. The abutment 502 is a columnar spring, which is sleeved on the outer periphery of the support sleeve assembly 30. One end of the columnar spring abuts against the friction plate 501, and the other end of the columnar spring is connected to the support sleeve assembly 30.

[0103] Specifically, in this embodiment of the invention, the columnar spring can be a helical spring, or in some examples, a wave spring. The diameter of the coil of the columnar spring can be larger than the diameter of the support sleeve assembly 30, thereby facilitating the columnar spring to be sleeved on the outer periphery of the support sleeve assembly 30.

[0104] In addition, in some optional examples of embodiments of the present invention, the spring wire of the column spring can be in the form of a sheet or plate, thereby improving the accuracy coefficient of the column spring.

[0105] In a specific configuration, a top block can be provided on the peripheral wall of the support sleeve assembly 30. The top block abuts against the end of the columnar spring facing away from the friction plate 501, thereby providing a certain compression to the columnar spring and causing it to press the friction plate 501 onto the drum 50. This facilitates the transmission of the rotational torque of the support sleeve assembly 30 to the drum 50, thereby driving the drum 50 to rotate.

[0106] In this embodiment of the invention, by setting the abutment 502 as a columnar spring, it is convenient to adjust the pressure on the friction plate 501 by adjusting the spring compression, that is, to adjust the frictional torque between the drum 50 and the support sleeve assembly 30; the frictional torque between the drum 50 and the support sleeve assembly 30 can be adjusted to adapt to different weights, thereby improving the adaptability of the hoist to different weights and expanding the scope of application of the hoist.

[0107] In an optional example of an embodiment of the present invention, refer to Figure 3 As shown, a second pressure plate 503 and an adjusting member 504 are provided at one end of the columnar spring facing away from the friction plate 501. The second pressure plate 503 is pressed against the end of the columnar spring. The adjusting member 504 is located on the side of the second pressure plate 503 facing away from the columnar spring, and the adjusting member 504 is threadedly connected to the peripheral wall of the support sleeve assembly 30.

[0108] Specifically, in this embodiment of the invention, the second pressure plate 503 can also be a ring-shaped structure made of stainless steel, aluminum alloy, or cast iron. In a specific configuration, the second pressure plate 503 can press against the entire end of the columnar spring. In this way, the second pressure plate 503 can provide uniform axial pressure to the columnar spring, thereby ensuring that the pressure provided by the columnar spring to the friction plate 501 is uniform along the axial direction; that is, ensuring the uniformity of the frictional force on the drum 50, thus ensuring the uniformity of the force on the drum 50 during rotation, and ensuring the stability of the rope winding and unwinding processes.

[0109] It is understood that, in this embodiment of the invention, the adjusting element 504 may also be a nut or screw, for example, refer to Figure 3 As shown, when the adjusting member 504 is gradually screwed into the peripheral wall of the support sleeve assembly 30, the adjusting member 504 gradually moves to the left (towards...). Figure 3 (The orientation shown is given as a specific example) Pushing the second pressure plate 503, the second pressure plate 503 compresses the column spring, thereby causing the column spring to apply pressure to the friction plate 501 and the drum 50 to ensure sufficient pressure between the drum 50 and the support sleeve assembly 30.

[0110] In an optional example of an embodiment of the present invention, the length of the external thread on the peripheral wall of the support sleeve assembly 30 along the axial direction of the support sleeve assembly 30 is greater than the length of the adjusting member 504 along the axial direction of the support sleeve assembly 30.

[0111] In other words, in this embodiment of the invention, the number of turns of the thread formed on the peripheral wall of the support sleeve assembly is greater than the number of turns of the internal thread of the adjusting member 504. This provides the adjusting member 504 with sufficient rotation / tightening distance in the axial direction of the support sleeve assembly 30, thereby allowing for adaptive adjustment of the compression of the columnar spring, i.e., adjusting the friction force between the support sleeve assembly 30 and the drum 50. Furthermore, the threaded connection between the adjusting member 504 and the support sleeve assembly 30 facilitates the replacement of the friction plate 501, improving the replacement efficiency of the friction plate 501.

[0112] Understandably, referring to Figure 3As shown, in some optional examples of the embodiments of the present invention, a thrust member 506 may also be provided between the adjusting member 504 and the second pressure plate 503. Specifically, in the embodiments of the present invention, the thrust member 506 may be an annular plate structure. The thrust member 506 is pressed together by the adjusting member 504 and the second pressure plate 503, so that the thrust member 506 is tightly attached to the end face of the adjusting member 504 facing the second pressure plate 503. In this way, the adjusting member 504 can be effectively prevented from becoming loose during the use of the hoist, ensuring the friction between the support sleeve assembly 30 and the drum 50; that is, improving the anti-attenuation performance of the friction between the support sleeve assembly 30 and the drum 50, which can effectively ensure the stability and safety of the hoist during use.

[0113] In another optional example of an embodiment of the present invention, refer to Figure 3 As shown, a protective sleeve 505 is provided around the outer periphery of the columnar spring, and the protective sleeve 505 is located between the friction plate 501 and the second pressure plate 503.

[0114] Specifically, in this embodiment of the invention, the sheath 505 can be made of rubber, that is, the sheath 505 can be a rubber sleeve. In a specific setting, the length of the sheath 505 can be set to be the same as the length of the column spring in its naturally extended state. When the second pressure plate 503 compresses the column spring, the sheath 505 can undergo a certain deformation, thereby effectively protecting the column spring.

[0115] It is understood that in some alternative examples of embodiments of the present invention, the sheath 505 may also be a rigid plastic sleeve or a metal sleeve. It is also understood that when the sheath 505 is a sleeve made of a rigid material, the diameter of the sheath 505 may be larger than the diameter of the second pressure plate 503; that is, when the second pressure plate 503 compresses the columnar spring, the second pressure plate 503 may enter the sheath 505.

[0116] In this embodiment of the invention, a protective sleeve 505 is provided around the outer periphery of the columnar spring; in this way, the protective sleeve 505 can block debris from the external environment, preventing debris from the external environment from affecting the columnar spring, and improving the effectiveness of the columnar spring in resisting the friction plate 501; thereby ensuring the stability of the friction force between the support sleeve assembly 30 and the drum 50, that is, ensuring the reliability of the hoist.

[0117] In yet another optional example of the embodiments of the present invention, refer to Figure 3 As shown, the friction plate 501 is provided with third pressure plates 507 on both sides along the axial direction of the support sleeve assembly 30, and the friction plate 501 is pressed between the two third pressure plates 507.

[0118] Specifically, in this embodiment of the invention, the third pressure plate 507 can be the same as or similar to the first pressure plate 302 or the second pressure plate 503 in the aforementioned embodiments of the invention. As a specific example, the third pressure plate 507 can be a ring-shaped steel sheet. In a specific configuration, one of the third pressure plates 507 is disposed between the friction plate 501 and the drum 50, and the other pressure plate is disposed between the friction plate 501 and the end face of the columnar spring. In this way, by pressing the friction plate 501 together in the middle with the two third pressure plates 507, the two third pressure plates 507 can play a certain protective role for the friction plate 501, which can effectively extend the service life of the friction plate 501. In addition, by pressing the friction plate 501 together in the middle with the two third pressure plates 507, it can be ensured that the friction plate 501 has the maximum contact area with both third pressure plates 507 during the friction process, ensuring the effectiveness of the friction between the support sleeve assembly 30 and the drum 50.

[0119] In an optional example of an embodiment of the present invention, refer to Figure 3 As shown, a rope-laying mechanism 100 is provided on one side of the drum 50 along the radial direction. The rope-laying mechanism 100 is connected to the frame 10, and the traction rope 60 is threaded through the rope-laying mechanism 100.

[0120] Specifically, the rope-laying mechanism 100 can be two guide wheels fixedly connected to the frame 10 and arranged opposite each other; the two guide wheels can be located on one side of the drum 50 along the radial direction. In a specific configuration, the guide wheels can be fixedly connected to the frame 10 by a connecting rod or a support rod. It can be understood that the traction rope 60 is threaded between the two guide wheels.

[0121] In this embodiment of the invention, by providing a rope arranging mechanism 100 on one radial side of the drum 50, and passing the traction rope 60 through the rope arranging mechanism 100, the rope arranging mechanism 100 can guide the traction rope 60 during the winding and unwinding process, making it easier for the traction rope 60 to be arranged regularly on the drum 50, improving the neatness of the traction rope 60 arrangement on the drum 50, and effectively avoiding the occurrence of rope pressing and knotting.

[0122] In yet another optional example of the embodiments of the present invention, refer to Figures 1-3 As shown, the rope winding mechanism 100 has a rope guide 110 on the side opposite to the drum 50, and the rope guide 110 is connected to the rope winding end of the drive assembly 20; the traction rope 60 passes through the rope guide 110.

[0123] Specifically, in this embodiment of the invention, the guide rope 110 can be a hollow flexible tube; the traction rope 60 is threaded through the flexible tube; this can provide a certain guiding and protective function for the traction rope 60. In some optional examples of this embodiment of the invention, the guide rope 110 can also be a helical spring, with the traction rope 60 threaded through the coil of the helical spring, thereby guiding the traction rope 60 through the helical spring.

[0124] In this embodiment of the invention, by providing a rope guide 110 on the side of the rope arrangement mechanism 100 facing away from the drum 50, and having the traction rope 60 pass through the rope guide 110, the traction rope 60 can be effectively prevented from falling to the outside; it can effectively guide and protect the traction rope 60, and extend the service life of the traction rope 60.

[0125] In some alternative examples of embodiments of the present invention, refer to Figure 3 As shown, a traction rope fixing seat 508 can be provided on the drum 50, and one end of the traction rope 60 connected to the drum 50 can be fixed in the traction rope fixing seat 508. In this way, the traction rope 60 can be easily fixed.

[0126] Figure 4 This is a front view of the hoist provided in an embodiment of the present invention. Figure 5 This is another structural schematic diagram of the hoist provided in an embodiment of the present invention.

[0127] Reference Figure 4 and Figure 5 As shown, in another optional example of the present invention, the hoist further includes a safety locking component 120 and a control box 130. The safety locking component 120 is connected to the frame 10 and is located on the side of the drive component 20 opposite to the guide rope component 110. The traction rope 60 is threaded through the safety locking component 120.

[0128] Specifically, in this embodiment of the invention, a brake handle 1201 may be provided on the safety locking component 120. In case of danger, the operator can use the brake handle 1201 to engage or lock the safety locking component 120 onto the traction rope 60, thereby preventing a fall.

[0129] Understandably, in some examples, the safety locking component 120 can also be connected to the control center via wired or wireless communication; in the event of a dangerous situation, the control center can operate the brake handle 1201 via wired or wireless communication to control the safety locking component 120 to engage or lock onto the traction rope 60, thereby preventing the hoist from falling.

[0130] In this embodiment of the invention, the control box 130 is mounted on the frame 10 and is electrically connected to the drive assembly 20. The control box 130 is used to control the driving direction of the drive assembly 20.

[0131] Specifically, refer to Figure 4 and Figure 5As shown in the embodiment of the invention, the control box 130 may be equipped with a lifting control component 1301 and a lowering control component 1302. It can be understood that the lifting control component 1301 specifically controls the drive component 202 to drive the rope pulley to move along the traction rope 60, and the drum 50 to retract the rope. That is, the lifting process can also be understood as the rope retraction process. The lowering control component 1302 specifically controls the drive component 202 to drive the rope pulley to rotate in the opposite direction, and under the weight of the load, gradually pulls the traction rope 60 out of the drum 50 and releases it. That is, the lowering control component 1302 can also be understood as the rope release process.

[0132] It is understood that in this embodiment of the invention, the rising control element 1301 can be a button, a touch screen, or in some examples, a knob. Of course, in this embodiment of the invention, the specific configuration of the falling control element 1302 can be the same as or similar to that of the rising control element 1301.

[0133] In addition, it can be understood that in this embodiment of the invention, the control box 130 may also be provided with a stop / pause control component 1303; for example, when the hoist is raised to a preset position, the rotation of the drive component 202 can be stopped by the stop / pause control component 1303, and at this time, it can also be locked onto the traction rope 60 by the safety locking component 120, so as to facilitate safe construction operations and improve the safety of construction operations.

[0134] In some alternative examples of embodiments of the present invention, refer to Figure 4 and Figure 5 As shown, the end of the traction rope 60 may also be provided with a hook 140; in this embodiment of the invention, the hook 140 may be attached to a fixed beam at a high position, and the frame 10 of the hoist may be fixed to the basket or heavy object to be lifted (e.g., Figure 5 (The usage shown is illustrated). In some alternative examples, a hook 140 may be provided at the end of the traction rope 60, and another hook 140 may be provided on the frame 10 of the hoist. One hook 140 may be hung on a fixed beam at a high position; the other hook 140 may be attached to a basket or a heavy object.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hoist, characterized in that, include: frame; A drive assembly, the drive assembly being mounted on the frame, and the drive assembly having a drive shaft; A support sleeve assembly is provided with a first one-way clutch at one end facing the drive assembly, the first one-way clutch being connected to the frame; the support sleeve assembly is also provided with a second one-way clutch at one end facing the drive assembly, the second one-way clutch being connected to the drive shaft, and the engagement direction of the second one-way clutch being opposite to that of the first one-way clutch. A drum is rotatably connected to the support sleeve assembly, and a traction rope is wound around the peripheral wall of the drum, at least a portion of which is wound around the drive assembly. The drum has a rope-unwinding state and a rope-rewinding state; In the rope-releasing state, the drum rotates relative to the support sleeve assembly under the drive of the traction rope, and the first one-way clutch engages to fix the support sleeve assembly to the frame. During the rope winding state, the second one-way clutch engages, causing the drive shaft to drive the support sleeve assembly to rotate relative to the frame, and causing the drum to wind the traction rope.

2. The hoist according to claim 1, characterized in that, The driving component includes: A drive unit, the drive unit being mounted on the frame; A pulley is provided, which is connected to the output shaft of the drive member. At least a portion of the traction rope is wound around the pulley. The drive shaft is connected to the pulley and is located on the side of the pulley facing away from the drive member. The second one-way clutch is sleeved on the drive shaft.

3. The hoist according to claim 2, characterized in that, The hoist also includes a connecting flange, which is connected to the frame; The first one-way clutch is sleeved on the outer periphery of the connecting flange; the drive shaft passes through the connecting flange, and one end of the drive shaft facing away from the pulley extends to the outside of the connecting flange.

4. The hoist according to claim 1, characterized in that, The support sleeve assembly is sleeved on the outer periphery of the first one-way clutch and the second one-way clutch, and a spacer is provided between the first one-way clutch and the second one-way clutch. The spacer is sleeved on the outer periphery of the drive shaft.

5. The hoist according to claim 1, characterized in that, The drive shaft is provided with a first pressure plate and a fixing member at the end opposite to the first one-way clutch. The first pressure plate is pressed against the end face of the second one-way clutch, and the fixing member is sleeved on the drive shaft, and the fixing member is located on the side of the first pressure plate opposite to the second one-way clutch.

6. The hoist according to claim 2, characterized in that, The drive assembly further includes: a speed reduction elevator, which is connected to the output shaft of the drive component, and the pulley is connected to the speed reduction elevator.

7. The hoist according to any one of claims 1-6, characterized in that, The drum is connected to the support sleeve assembly by frictional rotation.

8. The hoist according to claim 7, characterized in that, At least one side of the drum is provided with a friction plate, and the side of the friction plate facing away from the drum is provided with a stop member, which abuts against the friction plate and is fixed relative to the support sleeve assembly.

9. The hoist according to claim 8, characterized in that, The friction plate is located on the side of the drum opposite to the drive assembly. The abutting member is a columnar spring, which is sleeved on the outer periphery of the support sleeve assembly. One end of the columnar spring abuts against the friction plate, and the other end of the columnar spring is connected to the support sleeve assembly.

10. The hoist according to claim 9, characterized in that, The columnar spring is provided with a second pressure plate and an adjusting member at one end facing away from the friction plate. The second pressure plate is pressed against the end of the columnar spring. The adjusting member is located on the side of the second pressure plate facing away from the columnar spring, and the adjusting member is threadedly connected to the peripheral wall of the support sleeve assembly.

11. The hoist according to claim 10, characterized in that, The length of the external thread on the peripheral wall of the support sleeve assembly along the axial direction of the support sleeve assembly is greater than the length of the adjusting member along the axial direction of the support sleeve assembly.

12. The hoist according to claim 10, characterized in that, The outer periphery of the columnar spring is covered with a protective sleeve, which is located between the friction plate and the second pressure plate.

13. The hoist according to any one of claims 8-12, characterized in that, The friction plate is provided with third pressure plates on both sides along the axial direction, and the friction plate is pressed between the two third pressure plates.

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