Lifting equipment

Abstract

This invention relates to the field of lifting system technology, and provides a lifting device including a guide assembly, a vehicle body assembly, and a traction device. The vehicle body assembly is disposed on the guide assembly and guides and cooperates with the guide assembly. The traction device is disposed on the guide assembly and includes a drum, a traction rope, and a drive assembly. The traction rope has a fixed end and a free end. The fixed end is fixed to any end of the drum, and the free end is connected to the vehicle body assembly. The drive assembly is adapted to drive the drum to rotate, thereby driving the vehicle body assembly to move up and down. This invention fixes the fixed end of the traction rope to any end of the drum and connects the free end of the traction rope to the vehicle body assembly. The vehicle body assembly is suspended from the drum, and the traction rope is in a taut state under the weight of the vehicle body assembly. This results in good operational stability and avoids slippage of the vehicle body assembly during operation caused by using a closed-loop rope in lifting equipment. It also eliminates the need for a tensioning device for the traction rope in the lifting equipment, simplifying the structure of the lifting equipment.

Description

Technical Field

[0001] This invention relates to the field of lifting system technology, and more particularly to a lifting device. Background Technology

[0002] Lifting systems are widely used in various self-elevating platforms, such as self-elevating drilling platforms, wind power installation platforms, salvage, drilling, piling, rock dumping and leveling platforms, for raising and lowering operations.

[0003] In related technologies, the lifting equipment used for wind power installation platforms includes a carrier body, a vehicle body assembly, and a traction device. The traction device is installed on the carrier body, and the vehicle body assembly is connected to the traction device. The traction device drives the vehicle body assembly to move up and down along the carrier body.

[0004] The traction device employs a dual-drive control method, where the traction ropes are connected end-to-end to form a closed-loop structure. The vehicle body components are fixed to the traction ropes, which are then driven by the drive wheels. When the drive assembly operates, causing the drive wheels to rotate, the traction ropes and drive wheels are driven by static friction.

[0005] The reliability of lifting equipment is affected by the coefficient of friction between the traction rope and the drive wheel, as well as the normal force between them. Therefore, when the oil content of the traction rope is high, slippage is likely to occur, affecting the operation of the vehicle components.

[0006] Furthermore, after a period of use, the length of the traction rope will undergo structural changes, leading to slackness or uneven tension. To address this, multiple tensioning devices are installed on the lifting equipment along the traction rope's path to prevent slackness or uneven tension. However, installing multiple tensioning devices not only increases the production cost of the lifting equipment but also complicates its structure, making installation and maintenance more difficult. Summary of the Invention

[0007] This invention provides a lifting device to solve at least one technical defect in the prior art. The vehicle body component is suspended on the drum, and the traction rope is in a taut state under the action of its own weight, which has good operational stability and can avoid the slippage phenomenon of the vehicle body component when the lifting device uses a closed loop rope. At the same time, the tensioning device provided by the lifting device for the traction rope can be eliminated, thereby simplifying the structure of the lifting device.

[0008] To achieve the above objectives, the present invention provides a lifting device, comprising:

[0009] The guide assembly includes a pulley assembly;

[0010] A vehicle body assembly is disposed on one side of the guide assembly and is guided and engaged with the guide assembly;

[0011] A traction device is located on the other side of the guide assembly. The traction device includes a drum, a traction rope, and a drive assembly. The traction rope has a fixed end and a free end. The fixed end is fixed to either end of the drum, and the free end passes around the pulley assembly and is connected to the vehicle body assembly. The drive assembly is adapted to drive the drum to rotate, so as to drive the vehicle body assembly to move up and down.

[0012] The above-described one or more embodiments of the present invention have at least the following beneficial effects:

[0013] This invention fixes the fixed end of the traction rope to any end of the drum and connects the free end of the traction rope to the vehicle body assembly. When the drive assembly drives the drum to rotate, the drum moves the vehicle body assembly up and down along the length or extension direction of the guide assembly by winding and unwinding the traction rope. The vehicle body assembly is suspended on the drum, and the traction rope is always tensioned under its own weight. This provides good operational stability and avoids slippage of the vehicle body assembly during operation, which can occur with closed-loop rope lifting equipment. Furthermore, it eliminates the need for the tensioning device for the traction rope in traditional lifting equipment, simplifying the structure and facilitating installation and maintenance while reducing production costs.

[0014] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a side view of the lifting device provided in an embodiment of the present invention;

[0017] Figure 2 This is a front view of the lifting device provided in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the traction device in the lifting equipment provided in the embodiment of the present invention;

[0019] Figure 4 This is one of the partial structural schematic diagrams of the traction device in the lifting equipment provided in the embodiments of the present invention;

[0020] Figure 5 This is a second partial structural schematic diagram of the traction device in the lifting equipment provided in the embodiments of the present invention;

[0021] Figure 6 yes Figure 5 Enlarged view of section A;

[0022] Figure 7 This is one of the structural schematic diagrams of the drum of the traction device in the lifting equipment provided in the embodiments of the present invention;

[0023] Figure 8 This is the second schematic diagram of the structure of the drum of the traction device in the lifting equipment provided in the embodiment of the present invention;

[0024] Figure 9 This is a partial structural schematic diagram of the protective components in the lifting device provided in an embodiment of the present invention;

[0025] Figure 10 This is a top view of the protective components in the lifting device provided in an embodiment of the present invention;

[0026] Figure 11 yes Figure 10 A cross-sectional view along line AA.

[0027] Figure label:

[0028] 10. Guiding components;

[0029] 20. Vehicle body components;

[0030] 30. Traction device; 31. Drum; 311. Extension flange; 312. Connecting surface; 313. Perforation; 315. Rope groove; 32. Traction rope; 33. Drive assembly; 34. Fixing assembly; 341. Pressure plate component; 342. Fastener; 35. Bearing body; 351. Opening; 352. Receiving cavity; 353. Waste discharge hole; 354. Guide flange;

[0031] 40. Pulley assembly;

[0032] 50. Protective component; 51. Limiting component; 511. Mounting part; 5111. Groove; 512. Limiting part; 5121. Through hole; 52. Protective component; 521. Mounting groove;

[0033] 60. Loose rope detection mechanism; 61. Rope clamping assembly; 611. Rope clamping adapter; 612. First rope clamping roller; 613. Second rope clamping roller; 62. First trigger element; 621. Fixing part; 622. Connecting part; 63. First elastic element; 64. First trigger switch; 65. First mounting base;

[0034] 70. Rope stacking detection mechanism; 71. Rope contact assembly; 711. Rope contact adapter; 712. First rope contact roller; 713. Second rope contact roller; 72. Second trigger element; 73. Second elastic element; 74. Second trigger switch; 75. Second mounting base;

[0035] 80. Anti-wear wheel assembly; 90. Trigger limit assembly; 100. Mechanical limit assembly. Detailed Implementation

[0036] 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.

[0037] In the description of the embodiments of this application, 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 this application based on the specific circumstances.

[0038] In the embodiments of this application, unless otherwise expressly 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.

[0039] 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 embodiments of this application. 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.

[0040] like Figure 1 The side view of the lifting device provided in the embodiment of the present invention is shown; as follows: Figure 2 The following is a front view of the lifting device provided in an embodiment of the present invention; as shown. Figure 3 The diagram shown is a structural schematic of the traction device in the lifting equipment provided in the embodiment of the present invention; as shown in the figure. Figure 4 The diagram shown is one of the partial structural schematic diagrams of the traction device in the lifting equipment provided in the embodiment of the present invention; as shown... Figure 5 The diagram shown is a second partial structural schematic of the traction device in the lifting equipment provided in this embodiment of the invention; as shown... Figure 6 As shown Figure 5 Enlarged view of part A in the middle; as shown Figure 7 The diagram shown is one of the structural schematic diagrams of the drum of the traction device in the lifting equipment provided by the embodiment of the present invention; as shown Figure 8 The diagram shown is a second schematic representation of the structure of the drum of the traction device in the lifting equipment provided in this embodiment of the invention; as shown... Figure 9 The diagram shown is a partial structural schematic of the protective component in the lifting device provided in the embodiment of the present invention; as shown... Figure 10 The diagram shows a top view of the protective components in the lifting device provided in this embodiment of the invention; as shown. Figure 11 As shown Figure 10 A cross-sectional view along line AA.

[0041] An embodiment of the present invention provides a lifting device, which includes a guide assembly 10, a vehicle body assembly 20 and a traction device 30.

[0042] The guide assembly 10 provides support for the vehicle body assembly 20 and the traction device 30, and guides the operation of the vehicle body assembly 20. The guide assembly 10 includes a support body and a guide body. The support body can be a ladder, and the guide body can be a support rail or a fall-prevention rail mounted on the ladder. A pulley assembly 40 is provided at the top of the guide assembly 10. The vehicle body assembly 20 is disposed on one side of the guide assembly 10, and the vehicle body assembly 20 and the guide assembly 10 are guided and engaged along the extension direction of the guide assembly 10. That is, the vehicle body assembly 20 can slide along the length of the guide assembly 10 without detaching from it.

[0043] The traction device 30 is located on the other side of the guide assembly 10, that is, the traction device 30 is arranged back to back with the vehicle body assembly 20. The traction device 30 includes a drum 31, a traction rope 32 and a drive assembly 33. The traction rope 32 has a fixed end and a free end. The fixed end is fixed to any end of the drum 31, and the free end passes around the pulley assembly 40 and is connected to the vehicle body assembly 20. The drive assembly 33 is adapted to drive the drum 31 to rotate, so as to drive the vehicle body assembly 20 to move up and down.

[0044] Of course, the traction device 30 and the vehicle body assembly 20 can also be located on the same side. In this case, the traction device 30 can directly control the raising and lowering of the vehicle body assembly 20 without the need to install a pulley assembly 40 on the guide assembly 10 for reversing. For example, the traction device 30 can be set at the top of the guide assembly 10, and the extreme position of the vehicle body assembly 20 can be lower than the setting position of the traction device 30. This will prevent the vehicle body assembly 20 from colliding, and the vehicle body assembly 20 can be suspended below the traction device 30. Under the action of gravity, the traction rope 32 will always be in a taut state.

[0045] When the lifting device provided in this embodiment of the invention is performing lifting motion, it controls the drive component 33 to work, thereby driving the drum 31 to rotate and winding or unwinding the traction rope 32. By winding or unwinding the traction rope 32, the vehicle body component 20 can move up and down along the length of the guide component 10.

[0046] It is understood that this invention fixes the fixed end of the traction rope 32 to any end of the drum 31 and connects the free end of the traction rope 32 to the vehicle body assembly 20. When the drive assembly 33 drives the drum 31 to rotate, the drum 31 moves the vehicle body assembly 20 up and down along the length or extension direction of the guide assembly 10 by winding and unwinding the traction rope 32. The vehicle body assembly 20 is suspended on the drum 31, and under its own weight, the traction rope 32 is always kept taut, resulting in good operational stability. This avoids the slippage that can occur when the lifting equipment uses a closed-loop rope method. Furthermore, the tensioning device for the traction rope 32 in the original lifting equipment can be eliminated, simplifying the structure of the lifting equipment. This not only facilitates the installation and maintenance of the lifting equipment but also reduces its production cost.

[0047] Since the two ends of the traction rope 32 are respectively located on the drum 31 and the vehicle body assembly 20, and the two ends of the traction rope 32 are not connected, that is, the traction rope 32 adopts an open-loop winding method, under the action of the vehicle body assembly 20's own weight, the traction rope 32 is always in a taut state, and there will be no problem of the traction rope 32 becoming slack or unevenly taut. The traction rope 32 cooperates with the drive assembly 33 to achieve single-drive rigid traction, replacing the closed-loop dual-drive traction used in related technologies. This solves the problem of needing a tensioning device for the traction rope 32; and also addresses the problem of the traction rope slipping easily when the oil content is high, which affects the operation of the vehicle body assembly.

[0048] like Figures 3 to 8 As shown, in some embodiments of the present invention, the drum 31 has a columnar structure and two oppositely arranged end faces. A fixing component 34 is provided on the end face of either end of the drum 31. The fixing component 34 is used to fix the fixed end of the traction rope 32.

[0049] That is, the fixed end of the traction rope 32 can be fixed by a fixing component 34 additionally set on the end face of the drum 31, or the end face of the drum 31 can be set as a hollow structure, and the fixed end of the traction rope 32 can be tied and fixed by passing through the hollow structure.

[0050] like Figure 7 and Figure 8 As shown, the fixing assembly 34 includes a pressure plate component 341 and a fastener 342, the fastener 342 being adapted to fix the pressure plate component 341 to the end face of the drum 31. The pressure plate component 341 can be a single piece of pressure plate or multiple pressure plates stacked together.

[0051] For example, when the pressure plate component 341 is a single piece of pressure plate, the fastener 342 is a component such as a screw, bolt, or pin that serves as a connector. The fastener 342 passes through the pressure plate component 341 and fixes the pressure plate component 341 to the end face of the drum 31. The fixed end of the traction rope 32 is located between the end face of the pressure plate component 341 and the end face of the drum 31.

[0052] For example, when the pressure plate component 341 includes multiple pressure plates stacked together, the pressure plate component 341 includes a first pressure plate and a second pressure plate stacked together. The first pressure plate and the second pressure plate are provided with corresponding grooves. The fixed end of the traction rope 32 is located between the first pressure plate and the second pressure plate and is embedded in the groove. By tightening the fastener 342, the fixed end of the traction rope 32 is fixed to the fixing component 34.

[0053] like Figure 7 and Figure 8 As shown, in some embodiments of the present invention, both ends of the drum 31 are provided with an extension edge 311 extending radially along the drum, and an inclined connecting surface 312 is provided between the extension edge 311 and the end face of the drum 31. The connecting surface 312 is provided with a through hole 313. After the traction rope 32 is wound around the drum 31, the fixed end of the traction rope 32 passes through the through hole 313 and is fixed to the drum 31 by the fixing component 34. This arrangement makes it easy for the traction rope 32 to be wound around the outer circumferential surface of the drum 31, and will not cause the traction rope 32 to detach from the drum 31.

[0054] Of course, the end face of the drum 31 can also be flush. After the traction rope 32 is wound around the outer circumference of the drum 31, it directly connects to the fixing component 34 through the edge of the drum 31. Since the outer circumference is relatively smooth, the traction rope 32 is easy to detach from the drum 31 without the action of the rope pressing component, which will affect the use.

[0055] In this embodiment of the invention, a through hole 313 is provided on the connecting surface 312; the fixed end of the traction rope 32 passes through the through hole 313 and is fixed by the fixing component 34 to act as a rope pressing component, providing a limiting function for the traction rope 32 and effectively preventing the traction rope 32 from coming loose from the drum 31.

[0056] like Figures 3 to 8 As shown, in some embodiments of the present invention, the outer circumferential surface of the drum 31 is provided with a rope groove 315 for winding the traction rope 32 along the axial direction, and the traction rope 32 is embedded in the rope groove 315. The width of the rope groove 315 matches the diameter of the traction rope 32, that is, each rope groove 315 is allowed to accommodate one traction rope 32, and it cannot be wound repeatedly.

[0057] The traction device 30 provided in this embodiment of the invention can prevent the traction rope 32 from jumping out of the groove or getting caught during the winding and unwinding process, and can also prevent the traction rope 32 from getting stuck and unable to be pulled. It can also ensure that the traction rope 32 will not expand when winding and can be retracted smoothly.

[0058] The aforementioned traction rope 32 can be a steel wire rope, but it is not used to limit the material of the rope structure to be wound. It can also be other rope structures that can be wound on the drum 31 and can bear a certain tension.

[0059] like Figures 3 to 5 As shown, in some embodiments of this application, the traction device 30 further includes a support body 35, which has an opening 351 and a receiving cavity 352 communicating with the opening 351; a drum 31 is disposed in the receiving cavity 352, and the free end of the traction rope 32 extends out from the opening 351; a drive assembly 33 is fixed to the support body 35, and the drive assembly 33 is connected to the drum 31 in a transmission manner.

[0060] The supporting body 35 serves as the mounting body for the drum 31 and the drive assembly 33. The supporting body 35 may include multiple side plates, a bottom plate, and a top plate. The multiple side plates are a left side plate, a right side plate, a front side plate, and a rear side plate. The multiple side plates, the bottom plate, and the top plate are connected to each other to enclose and form a receiving cavity 352. An opening 351 is provided on the top plate to allow the traction rope 32 to extend out of the receiving cavity 352.

[0061] The supporting body 35 may further include a cover and two seats disposed opposite each other on both sides of the cover. The cover is fitted over the outside of the drum 31. When the traction rope 32 is wound around the drum 31, the cover, when fitted over the outside of the drum 31, can compress the traction rope 32. Then, an opening 351 is made in the cover to allow the traction rope 32 to extend out of the receiving cavity 352. The two seats are respectively disposed at both ends of the cover.

[0062] It should be noted that the shape of the enclosure does not necessarily have to be cylindrical; it can also be a semi-enclosed arc structure or a polygonal structure. The specific configuration can be selected based on the actual usage scenario.

[0063] like Figure 3 and Figure 4 As shown, in some embodiments of the present invention, a protective component 50 is provided over the opening 351. The protective component 50 is connected to the supporting body 35, and the traction rope 32 extends out of the traction device 30 after passing through the protective component 50. This prevents foreign objects from falling into the supporting body 35 and affecting the use of the traction rope 32.

[0064] like Figures 9 to 11As shown, the protective component 50 includes a limiting member 51 and protective members 52 disposed on both sides of the limiting member 51; the limiting member 51 is provided with a through hole 5121 for the traction rope 32 to extend out, and the traction rope 32 extends out from the through hole 5121.

[0065] The protective component 52 is a telescopic protective component, similar to a corrugated pipe. It can be telescopic to adapt to the length of the opening 351, thereby accommodating more product specifications. The protective component 52 has a mounting groove 521, and a guide flange 354 is provided on the supporting body 35 at the position of the opening 351. The protective component 52 is guided and engaged with the guide flange 354 on the supporting body 35 through the mounting groove 521.

[0066] In addition, a positioning protrusion can be provided on the guide flange 354 along the length of the guide flange 354, and positioning grooves that cooperate with the positioning protrusion are provided on both sides of the groove wall of the mounting groove 521. The cooperation between the positioning protrusion and the positioning groove can prevent the protective part 52 from detaching from the supporting body 35.

[0067] Correspondingly, positioning protrusions can also be set on both sides of the groove wall of the mounting groove 521, and positioning grooves are correspondingly opened on the guide flange 354.

[0068] Specifically, the limiting component 51 includes a mounting part 511 and a limiting part 512; the mounting part 511 is fixedly connected to the protective component 52, and a groove 5111 is provided on the mounting part 511; the limiting part 512 is detachably connected to the groove 5111. By detachably connecting the limiting part 512 to the groove 5111, when the traction rope 32 rubs against the limiting part 512, causing damage to the limiting part 512, the limiting part 512 can be removed and replaced in a timely manner.

[0069] The mounting part 511 is a shell structure adapted to the cross-sectional shape of the protective member 52. The slot 5111 is opened from one side of the mounting part 511 to the other side of the mounting part 511 to facilitate the installation and removal of the limiting part 512.

[0070] The limiting part 512 is a rubber plug or rubber pad, which is a component that can play a certain buffering role. A slot is provided in the middle of the limiting part 512, and the limiting part 512 is locked to the side of the slot 5111 through the slot. The through hole 5121 is opened through the center of the limiting part 512.

[0071] Alternatively, the protective component 50 can also be an integral housing with a through hole 5121 in the middle of the housing for the traction rope 32 to extend out from the through hole 5121. Different specifications of protective components 50 can be set according to the different lengths of the opening 351.

[0072] In some embodiments of the present invention, the traction device 30 further includes a slack rope detection mechanism 60 and a folded rope detection mechanism 70; both the slack rope detection mechanism 60 and the folded rope detection mechanism 70 are disposed on the bearing body 35. The slack rope detection mechanism 60 is adapted to detect the slack state of the traction rope 32 and feed the detection information back to the control system of the lifting equipment, thereby controlling the operation of the drive component 33 through the control system; the folded rope detection mechanism 70 is adapted to detect the folded state of the traction rope 32 and feed the detection information back to the control system of the lifting equipment, thereby controlling the operation of the drive component 33 through the control system.

[0073] like Figures 3 to 8 As shown, in some embodiments of the present invention, the slack rope detection mechanism 60 includes a rope clamping assembly 61, a first trigger 62, a first elastic element 63, and a first trigger switch 64.

[0074] The rope clamping assembly 61 is rotatably mounted on the supporting body 35, and the rope clamping assembly 61 can be threaded with the traction rope 32. When the traction rope 32 is in a tensioned state, it can provide torque to the rope clamping assembly 61 so that the rope clamping assembly 61 is in a balanced state.

[0075] The first trigger 62 is disposed on the supporting body 35 and coaxially arranged with the rope clamping assembly 61 so as to move with the rope clamping assembly 61. That is, when the first trigger 62 rotates, it can drive the rope clamping assembly 61 to rotate synchronously, or when the rope clamping assembly 61 rotates, it can drive the first trigger 62 to rotate synchronously. The first trigger 62 can be a structure such as a swing arm or a connecting rod, and the shape of the swing arm and connecting rod can be adjusted according to the actual use scenario.

[0076] For example, when the first trigger 62 is a swing arm, the swing arm can be divided into a fixed part 621 and a connecting part 622 along its length. The shape of the fixed part 621 can be circular, rhomboid, elliptical, etc., and the fixed part 621 can be coaxially arranged with the rope clamping assembly 61, that is, the rotation axis of the rope clamping assembly 61 and the rotation axis of the fixed part 621 are collinear. The shape of the connecting part 622 can be rod-shaped, spline-shaped, etc., with a certain length, and the connecting part 622 can be connected to the first elastic member 63.

[0077] The first elastic element 63 is disposed between the first trigger element 62 and the bearing body 35. The first elastic element 63 is connected to the first trigger element 62 and the bearing body 35 respectively. The first elastic element 63 is in an elastic deformation state, that is, the first elastic element 63 deforms under the action of external force, and the first elastic element 63 can return to its original state after the external force is removed.

[0078] The first elastic element 63 can be a spring, a torsion spring, or other spring known to those skilled in the art. When the first elastic element 63 is a spring, the spring includes a tension spring, a compression spring, or the like.

[0079] For example, when the first elastic element 63 is a tension spring, when the traction rope 32 is in a slack state, the elastic deformation of the tension spring returns to its original state, thereby pushing the first trigger element 62 to deflect the rope clamping assembly 61. The first trigger element 62 then triggers the first trigger switch 64. When the traction rope 32 is in a taut state, the torque of the traction rope 32 on the rope clamping assembly 61 and the torque of the first elastic element 63 reach dynamic equilibrium again. The tension spring is in an elastic deformation state, thereby causing the first trigger element 62 to return to its initial position, which is the position where the first trigger switch 64 is not triggered.

[0080] For example, when the first elastic element 63 is a compression spring, when the traction rope 32 is in a slack state, the elastic deformation of the compression spring returns to its original state, pushing the first trigger element 62 to deflect the rope clamping assembly 61, and the first trigger element 62 triggers the first trigger switch 64. When the traction rope 32 is in a taut state, the torque of the traction rope 32 on the rope clamping assembly 61 and the torque of the first elastic element 63 reach dynamic equilibrium again, the compression spring is in an elastic deformation state, and the compression spring drives the first trigger element 62 to return to its initial position, that is, the position where the first trigger switch 64 is not triggered.

[0081] The first trigger switch 64 is disposed on the first trigger member 62. The first trigger switch 64 can be a position sensor or an angle sensor known in the art. The angle sensor is disposed on the rotating shaft of the first trigger member 62, and the position sensor is disposed at the corresponding position of the first trigger member 62.

[0082] When the first trigger switch 64 is a position sensor, the position sensor can be a contact sensor or a proximity sensor. The position sensor detects the position of the first trigger 62 and converts it into an output signal to feed back to the control system of the lifting equipment. This enables closed-loop control of the drive system of the lifting equipment, thereby realizing the electrical linkage feedback function of the drive device, making the lifting equipment operate more accurately and with higher safety.

[0083] When the position sensor is a contact sensor, it can include limit switches, two-dimensional matrix position sensors, etc. The position sensor is positioned on the moving path of the first trigger 62. When the first trigger 62 moves, it touches the limit switch, causing the limit switch to slightly actuate its internal contacts, thereby completing the control.

[0084] When the position sensor is a proximity sensor, the proximity sensor may include electromagnetic, photoelectric, differential transformer, eddy current, capacitive, reed switch or Hall effect, etc. The proximity sensor does not need to contact the first trigger 62. When the first trigger 62 approaches the proximity sensor to a set distance, it sends an "action" signal to the switch, thereby completing the control.

[0085] The lifting device provided by this invention has the following operating conditions during lifting operations:

[0086] When the traction rope 32 is in a taut state, the torque of the traction rope 32 on the rope clamping assembly 61 and the torque of the first elastic element 63 reach a dynamic balance. That is, the torque of the traction rope 32 on the rope clamping assembly 61 overcomes the elastic force of the first elastic element 63, so that the rope clamping assembly 61 guides the traction rope 32 on the drum 31 to be wound and unwound normally.

[0087] When the traction rope 32 is in a slack state, the torque of the traction rope 32 on the rope clamping assembly 61 is less than the elastic force of the first elastic member 63. The first elastic member 63 drives the rope clamping assembly 61 to deflect through the first trigger member 62. At this time, the first trigger member 62 triggers the first trigger switch 64, and the first trigger switch 64 transmits a signal to the control system of the lifting equipment. The control system controls the drive assembly 33 to stop running to ensure the safety of the lifting equipment operation.

[0088] like Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the rope clamping assembly 61 includes a rope clamping adapter 611 and two rope clamping rollers, which are respectively referred to as the first rope clamping roller 612 and the second rope clamping roller 613. The rope clamping adapter 611 is fixedly connected to the first rope clamping roller 612 and the second rope clamping roller 613, and the rope clamping adapter 611 is rotatably connected to the bearing body 35.

[0089] The first rope clamping roller 612 and the second rope clamping roller 613 are arranged side by side at intervals to form a gap between the first rope clamping roller 612 and the second rope clamping roller 613 for the traction rope 32 to pass through, and the gap is arranged corresponding to the opening 351.

[0090] When the torque of the traction rope 32 on the rope clamping assembly 61 and the torque of the first elastic element 63 reach dynamic equilibrium, the friction between the traction rope 32 and the first rope clamping roller 612 and the second rope clamping roller 613 makes the first rope clamping roller 612 and the second rope clamping roller 613 flush with each other. When the torque of the traction rope 32 on the rope clamping assembly 61 is less than the torque of the first elastic element 63, the positions of the first rope clamping roller 612 and the second rope clamping roller 613 tilt, that is, one of the first rope clamping roller 612 and the second rope clamping roller 613 is higher and the other is lower.

[0091] like Figure 6 As shown, in some embodiments of the present invention, the slack rope detection mechanism 60 further includes a first mounting base 65, which is disposed on the supporting body 35, and a first trigger member 62 is disposed on the first mounting base 65. A trigger portion is provided on the first mounting base 65, and a first trigger switch 64 is disposed on the first trigger member 62 corresponding to the position of the trigger portion.

[0092] When the first trigger switch 64 is a proximity sensor, the proximity sensor may include an electromagnetic proximity sensor. The first trigger element 62 is a metal trigger element, and the triggering part is a detection slot formed on the first mounting base 65. When the torque of the traction rope 32 on the rope clamping assembly 61 and the torque of the first elastic element 63 reach dynamic equilibrium, the position of the first trigger switch 64 corresponds to the position of the detection slot. When the first trigger element 62 rotates, the first trigger switch 64 moves with the first trigger element 62 to leave the position of the detection slot. At this time, the first trigger element 62 and the first trigger switch 64 approach a set distance, and the switch that sends an "action" signal provides the detection signal to the control system of the lifting equipment as feedback information. The control system of the lifting equipment controls the drive assembly 33 to stop running.

[0093] In the absence of the first mounting base 65, a detection groove corresponding to the movement path of the first trigger switch 64 can be formed on the side plate of the supporting body 35 to create a trigger section. However, this arrangement would compromise the sealing of the supporting body 35, making it easier for debris to enter the accommodating cavity 352.

[0094] like Figure 3 and Figure 8 As shown, in some embodiments of the present invention, the rope stacking detection mechanism 70 includes a rope contact assembly 71, a second trigger 72, a second elastic element 73, and a second trigger switch 74.

[0095] The contact rope assembly 71 is rotatably mounted on the supporting body 35. The contact rope assembly 71 contacts the traction rope 32 wound around the outer circumference of the drum 31. At this time, a single layer of traction rope 32 is wound around the outer circumference of the drum 31. When the traction rope 32 becomes tangled or overlapping during the winding process, the contact rope assembly 71 is forced to rotate, thereby driving the second trigger 72 to trigger the second trigger switch 74. The second trigger switch 74 outputs a signal to the control system of the lifting equipment.

[0096] The second trigger 72 is disposed on the supporting body 35 and coaxially arranged with the touch rope assembly 71 so as to move with the touch rope assembly 71. That is, when the second trigger 72 rotates, it can drive the touch rope assembly 71 to rotate synchronously, or when the touch rope assembly 71 rotates, it can drive the second trigger 72 to rotate synchronously. The second trigger 72 has the same or similar shape and structure as the first trigger 62. The second trigger 72 can be set with reference to the first trigger 62. That is, the second trigger 72 can be a swing arm, a connecting rod, or other structure. The shape of the swing arm and connecting rod can be adjusted according to the actual use scenario.

[0097] The second elastic element 73 is disposed between the second trigger element 72 and the bearing body 35. The second elastic element 73 is connected to the second trigger element 72 and the bearing body 35 respectively. The second elastic element 73 is in an elastic deformation state, that is, the second elastic element 73 deforms under the action of external force, and the second elastic element 73 can return to its original state after the external force is removed.

[0098] The second elastic element 73 can be a spring, a torsion spring, or other spring known to those skilled in the art. When the second elastic element 73 is a spring, the spring includes a tension spring, a compression spring, etc. The working principle of the second elastic element 73 is the same as or similar to that of the first elastic element 63 described above, and can be understood by referring to the working principle of the first elastic element 63 described above; therefore, it will not be elaborated further here.

[0099] The second trigger switch 74 is located on the second trigger member 72. When the traction rope 32 is in the folded rope state, the rope contact assembly 71 deflects and drives the second trigger member 72 to trigger the second trigger switch 74. The second trigger switch 74 outputs a signal to the control system of the lifting equipment, and the control system controls the drive assembly 33 to stop running to ensure the safe operation of the lifting equipment.

[0100] The second trigger switch 74 can be a position sensor or an angle sensor known in the art. The angle sensor is located on the rotating shaft of the first trigger member 62, and the position sensor is located at the corresponding position of the second trigger switch 74.

[0101] When the second trigger switch 74 is a position sensor, the position sensor can be a contact sensor or a proximity sensor. The position sensor detects the position of the second trigger 72 and converts it into an output signal to feed back to the control system of the lifting equipment. This enables closed-loop control of the drive system of the lifting equipment, thereby realizing the electrical linkage feedback function of the drive device, making the lifting equipment operate more accurately and with higher safety.

[0102] When the position sensor is a contact sensor, it can include limit switches, two-dimensional matrix position sensors, etc. The position sensor is positioned on the moving path of the second trigger 72. When the second trigger 72 moves, it touches the limit switch, causing the limit switch to slightly actuate its internal contacts, thereby completing the control.

[0103] When the position sensor is a proximity sensor, the proximity sensor may include electromagnetic, photoelectric, differential transformer, eddy current, capacitive, reed switch or Hall effect, etc. The proximity sensor does not need to contact the second trigger 72. When the second trigger 72 approaches the proximity sensor to a set distance, it sends an "action" signal to the switch, thereby completing the control.

[0104] The lifting device provided by this invention has the following operating conditions during lifting operations:

[0105] When the traction rope 32 is in a tangled or messy state, the traction rope 32 lifts the contact rope assembly 71, causing the contact rope assembly 71 to deflect and drive the second trigger 72 to trigger the second trigger switch 74. The second trigger switch 74 outputs a signal to the control system of the lifting equipment, and the control system controls the drive assembly 33 to stop running to ensure the safe operation of the lifting equipment.

[0106] like Figure 5 and Figure 8 As shown, in some embodiments of the present invention, the touch rope assembly 71 includes a touch rope adapter 711 and a touch rope roller assembly. The touch rope roller assembly is eccentrically connected to the touch rope adapter 711 and is in contact with the traction rope 32. The touch rope adapter 711 is rotatably connected to the bearing body 35.

[0107] Furthermore, the contact rope roller assembly includes a first contact rope roller 712 and a second contact rope roller 713; the diameter of the first contact rope roller 712 is larger than the diameter of the second contact rope roller 713, the first contact rope roller 712 is in contact with the traction rope 32, and the second contact rope roller 713 is disposed on the bearing body 35 and is coaxially arranged with the second trigger member 72.

[0108] Among them, the small-diameter second contact rope roller 713 serves as a connecting rope roller. Under external force, the second contact rope roller 713 is rotated through the adapter, which drives the large-diameter first contact rope roller 712 to press on the traction rope 32 wound on the drum 31.

[0109] Since the eccentric connection between the contact rope roller assembly and the contact rope adapter 711 is equivalent to the function of a cam, the contact rope roller assembly includes a first contact rope roller 712 and a second contact rope roller 713; the diameter of the first contact rope roller 712 is larger than the diameter of the second contact rope roller 713, the first contact rope roller 712 is in contact with the traction rope 32, and the second contact rope roller 713 is located on the bearing body 35 and is coaxially arranged with the second trigger 72, which is also equivalent to the function of a cam.

[0110] When the drum 31 rotates, there is sliding friction between the contact rope roller assembly and the traction rope 32 wound on the drum 31, which can easily reduce the service life of the traction rope 32 (i.e., the wire rope). Therefore, in some embodiments of the present invention, the first contact rope roller 712 is connected to the contact rope adapter 711 via a bearing. The first contact rope roller 712 can rotate on the contact rope adapter 711, and when the drum 31 rotates, the first contact rope roller 712 and the traction rope 32 wound on the drum 31 experience rolling friction to extend the service life of the traction rope 32 (i.e., the wire rope).

[0111] like Figures 3 to 5 ,as well as Figure 8As shown, in some embodiments of the present invention, the rope stacking detection mechanism 70 further includes a second mounting base 75, which is disposed on the supporting body 35; a second trigger member 72 is disposed on the second mounting base 75. A trigger part is provided on the second mounting base 75, and a second trigger switch 74 is disposed on the second trigger member 72 corresponding to the position of the trigger part.

[0112] When the second trigger switch 74 is a proximity sensor, the proximity sensor may include an electromagnetic proximity sensor. The second trigger 72 is a metal trigger, and the triggering part is a detection slot formed on the second mounting base 75. When the traction rope 32 is in a tangled or disordered state, the traction rope 32 lifts the contact rope assembly 71, causing the contact rope assembly 71 to deflect and drive the second trigger 72 to rotate. When the second trigger 72 rotates, the second trigger switch 74 moves with the second trigger 72 to leave the position of the detection slot. At this time, the second trigger 72 and the second trigger switch 74 approach to a set distance, and the switch that issues an "action" signal provides the detection signal to the control system of the lifting equipment as feedback information. The control system of the lifting equipment then controls the drive assembly 33 to stop operating.

[0113] The second mounting base 75 is designed in a similar principle to the first mounting base 65. When the second mounting base 75 is not installed, a detection groove corresponding to the movement path of the second trigger switch 74 can be formed on the side plate of the supporting body 35 to create a trigger section. However, this design compromises the sealing of the supporting body 35, making it easier for debris to enter the accommodating cavity 352.

[0114] like Figure 4 and Figure 5 As shown, in some embodiments of the present invention, the bottom wall of the bearing body 35 is provided with a waste discharge hole 353. The waste discharge hole 353 can discharge the powder worn by the traction rope 32 (i.e., wire rope) during operation, so as to avoid the accumulation of the powder and other impurities in the accommodating cavity 352 and affect the use of the traction rope 32.

[0115] like Figure 1 and Figure 2 As shown, in some embodiments of the invention, the guide assembly 10 is further provided with an anti-wear wheel assembly 80; the anti-wear wheel assembly 80 is arranged along the laying path of the traction rope 32, which is suitable for preventing the traction rope 32 from contacting the guide assembly 10, so as to avoid wear between the traction rope 32 and the guide assembly 10, which would cause the traction rope 32 to break.

[0116] In addition, a fall-prevention hole is provided on the guide rail of the guide component 10. The fall-prevention hole is a locking elongated hole. The vehicle body component 20 is provided with a fall-prevention component. In case of an emergency, the vehicle body component 20 can be locked to the fall-prevention hole by the fall-prevention component.

[0117] That is, when the vehicle body assembly 20 moves up and down along the guide assembly 10, the fall arrestor can restrain the vehicle body assembly 20 on the guide assembly 10 in the event of a stall and fall, ensuring the safe operation of the lifting equipment. Furthermore, the fall arrestor is fixedly connected to the vehicle body assembly 20, which can be done by bolts or screws.

[0118] The fall arrestor can be a centrifugal block structure, comprising a centrifugal block, a spring, and a speed measuring wheel. The centrifugal block works in conjunction with the guide assembly 10 to achieve a limit stop; the speed measuring wheel is used to measure the falling speed of the vehicle body assembly 20. Under normal speed conditions, the fall arrestor is in the closed state, meaning the centrifugal block is housed within it. When the vehicle body assembly 20 moves downwards along the guide assembly 10, the speed measuring wheel rotates along the guide assembly 10, causing the centrifugal block to rotate. When the lifting device stalls and falls, i.e., when the falling speed exceeds a set speed threshold, the centrifugal block overcomes the spring's tension and is thrown outwards, instantly locking itself within the fall arrestor hole of the guide assembly 10.

[0119] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a trigger limiting component 90 and a mechanical limiting component 100 are also provided at both ends of the guide component 10, with the trigger limiting component 90 disposed between the mechanical limiting components 100.

[0120] The trigger limit assembly 90 includes an upper trigger block and a lower trigger block. Meanwhile, a detection switch is installed on the outer surface of the housing of the vehicle body assembly 20.

[0121] When the vehicle body assembly 20 is moving upward, if the detection switch detects the upper trigger block, the detection switch sends a signal to the control system of the lifting equipment, triggering the drive assembly 33 to stop rotating, thus stopping the vehicle body assembly 20 from moving upward. Similarly, when the vehicle body assembly 20 is moving downward, if the detection switch detects the lower trigger block, the lower limit switch sends a signal to the controller, triggering the drive assembly 33 to stop rotating, thus stopping the vehicle body assembly 20 from moving downward, ensuring the safety of the vehicle body assembly 20 during operation.

[0122] The mechanical limit component 100 includes an upper limit block and a lower limit block. When the trigger limit component 90 fails, the vehicle body component 20 will mechanically collide with the upper limit block and the lower limit block during operation, forcing the vehicle body component 20 to stop running, preventing the vehicle body component 20 from sliding out of the guide component 10 and causing a major accident, thereby improving the safety of the operation of the vehicle body component 20.

[0123] It should be noted that in this embodiment of the invention, the drive component 33 can be a geared motor known in the art. The geared motor and the drum 31 are coaxially arranged, and the speed of the geared motor can be adjusted by a frequency converter. In practical applications, this embodiment can be configured with a geared motor of appropriate rated power and a traction rope 32 of appropriate strength according to traction requirements. For example, the traction rope 32 can be specifically selected, and its diameter can be configured according to actual needs.

[0124] The lifting device provided in this embodiment of the invention improves the structure of the traction device 30 by fixing the fixed end of the traction rope 32 to any end of the drum 31 and connecting the free end of the traction rope 32 to the vehicle body assembly 20. When the drive assembly 33 drives the drum 31 to rotate, the drum 31 moves the vehicle body assembly 20 up and down along the length or extension direction of the guide assembly 10 by winding and unwinding the traction rope 32. The vehicle body assembly 20 is suspended on the drum 31, and the traction rope 32 is always kept taut under its own weight, resulting in good operational stability. This avoids slippage of the vehicle body assembly during operation, which can be avoided when the lifting device uses a closed-loop rope method. At the same time, the tensioning device provided for the traction rope 32 in the original lifting device can be eliminated, simplifying the structure of the lifting device, which not only facilitates the installation and maintenance of the lifting device but also reduces the production cost of the lifting device.

[0125] Since the two ends of the traction rope 32 are respectively located on the drum 31 and the vehicle body assembly 20, and the two ends of the traction rope 32 are not connected, that is, the traction rope 32 adopts an open-loop winding method, under the action of the vehicle body assembly 20's own weight, the traction rope 32 is always in a taut state, and there will be no problem of the traction rope 32 becoming slack or unevenly taut. The traction rope 32 cooperates with the drive assembly 33 to achieve single-drive rigid traction, replacing the closed-loop dual-drive traction used in related technologies. This solves the problem of needing a tensioning device for the traction rope 32; and also addresses the problem of the traction rope slipping easily when the oil content is high, which affects the operation of the vehicle body assembly.

[0126] In addition, a protective component 50 is provided on the traction device 30, that is, the protective component 50 is connected to the bearing body 35, and the traction rope 32 extends out of the traction device 30 after passing through the protective component 50, which can prevent foreign objects from falling into the bearing body 35 and affecting the use of the traction rope 32.

[0127] When the vehicle body assembly 20 is in the lifting and lowering operation, when the vehicle body assembly 20 is in normal operation, that is, when the traction rope 32 is in a taut state, the torque of the traction rope 32 on the rope clamping assembly 61 and the torque of the first elastic element 63 reach a dynamic balance. That is, the torque of the traction rope 32 on the rope clamping assembly 61 overcomes the elastic force of the first elastic element 63, so that the rope clamping assembly 61 guides the traction rope 32 on the drum 31 to be wound and unwound normally.

[0128] When the vehicle body component 20 malfunctions (such as accidental locking, jamming, or breakage of the traction rope 32), i.e., when the traction rope 32 is in a slack state, the torque of the traction rope 32 on the rope clamping component 61 is less than the elastic force of the first elastic element 63. The first elastic element 63 drives the rope clamping component 61 to deflect through the first trigger element 62. At this time, the first trigger element 62 triggers the first trigger switch 64, and the first trigger switch 64 transmits a signal to the control system of the lifting equipment. The control system controls the drive component 33 to stop running to ensure the safety of the lifting equipment operation.

[0129] When the traction rope 32 is in a tangled or messy state, the traction rope 32 lifts the contact rope assembly 71, causing the contact rope assembly 71 to deflect and drive the second trigger 72 to trigger the second trigger switch 74. The second trigger switch 74 outputs a signal to the control system of the lifting equipment, and the control system controls the drive assembly 33 to stop running to ensure the safe operation of the lifting equipment.

[0130] It should be noted that the technical solutions in the various embodiments of the present invention can be combined with each other, but the basis for such combination is that they can be implemented by those skilled in the art; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist, that is, it is not within the protection scope of the present invention.

[0131] 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 lifting device, characterized in that, include: A guide assembly, on which a pulley assembly is provided; A vehicle body assembly is disposed on the guide assembly and is guided and engaged with the guide assembly; A traction device is provided on the guide assembly. The traction device includes a drum, a traction rope, a drive assembly, and a load-bearing body. The traction rope has a fixed end and a free end. The fixed end is fixed to any one end of the drum, and the free end is connected to the vehicle body assembly. The drive assembly is adapted to drive the drum to rotate, thereby driving the vehicle body assembly to move up and down. A fixing assembly is provided on the end face of any one end of the drum, and the fixing assembly is used to fix the traction rope. The fixing assembly includes a pressure plate component and a fastener. The fastener is adapted to fix the pressure plate component to the end face of the drum. The traction rope is located between the pressure plate components, or between the pressure plate components and the drum. Both ends of the drum are provided with an extension edge extending radially along the drum. A connecting surface is provided between the extension edge and the end face of the drum, and the connecting surface has a through hole. The traction rope passes through the through hole and is fixed to the drum by the fixing assembly. The supporting body has an opening and a receiving cavity communicating with the opening; the drum is disposed in the receiving cavity, and the free end of the traction rope extends out from the opening; the driving component is fixed to the supporting body and is drivenly connected to the drum. The vehicle body assembly and the traction device are disposed back-to-back on the guide assembly, and the free end passes around the pulley assembly and is connected to the vehicle body assembly.

2. The lifting device according to claim 1, characterized in that, The opening is covered with a protective component; The protective component is connected to the supporting body, and the traction rope is threaded through the protective component.

3. The lifting device according to claim 2, characterized in that, The protective component includes a limiting member and protective members disposed on both sides of the limiting member; The limiting member is provided with a through hole for the traction rope to pass through; The protective component is a retractable protective component, and the protective component is guided and matched with the load-bearing body along the length direction of the opening.

4. The lifting device according to claim 3, characterized in that, The limiting component includes a mounting part and a limiting part; The mounting part is connected to the protective component, and the mounting part is provided with a slot; The through hole is provided in the limiting part, and the limiting part is detachably connected to the slot.

5. The lifting device according to claim 1, characterized in that, The traction device also includes a slack rope detection mechanism and a folded rope detection mechanism; Both the slack rope detection mechanism and the folded rope detection mechanism are located on the supporting body. The slack rope detection mechanism is adapted to detect the slack state of the traction rope, and the folded rope detection mechanism is adapted to detect the folded state of the traction rope.

6. The lifting device according to claim 5, characterized in that, The slack rope detection mechanism includes: A rope clamping assembly is rotatably mounted on the supporting body, and the traction rope passes through the rope clamping assembly; A first trigger is disposed on the supporting body and coaxially arranged with the rope clamping assembly so as to move with the rope clamping assembly; The first elastic element is connected to the first trigger element and the supporting body; A first trigger switch is provided on the first trigger member. When the traction rope is in a slack state, the rope clamping assembly deflects and drives the first trigger member to trigger the first trigger switch, and the drive assembly stops operating.

7. The lifting device according to claim 6, characterized in that, The rope clamping assembly includes a rope clamping adapter and two rope clamping rollers. The rope clamping adapter is fixedly connected to the two rope clamping rollers respectively, and the rope clamping adapter is rotatably connected to the supporting body. The two rope-clamping rollers are spaced apart to form a gap between them for the traction rope to pass through, the gap being provided in relation to the opening.

8. The lifting device according to claim 6, characterized in that, The slack rope detection mechanism further includes a first mounting base, which is disposed on the supporting body; The first trigger element is disposed on the first mounting base, the first mounting base is provided with a trigger part, and the first trigger switch is disposed on the first trigger element corresponding to the position of the trigger part.

9. The lifting device according to claim 5, characterized in that, The rope stacking detection mechanism includes: A contact rope assembly is rotatably disposed on the bearing body, and the contact rope assembly contacts the traction rope wound around the outer circumferential surface of the drum; The second trigger is located on the supporting body and is coaxially arranged with the touch rope assembly so as to move with the touch rope assembly; The second elastic element is connected to the second trigger element and the supporting body; The second trigger switch is located on the second trigger member. When the traction rope is in the folded rope state, the rope contact assembly deflects and drives the second trigger member to trigger the second trigger switch, and the drive assembly stops operating.

10. The lifting device according to claim 9, characterized in that, The touch rope assembly includes a touch rope adapter and a touch rope roller assembly. The touch rope roller assembly is eccentrically connected to the touch rope adapter, the touch rope roller assembly is in contact with the traction rope, and the touch rope adapter is rotatably connected to the supporting body.

11. The lifting device according to claim 10, characterized in that, The contact rope roller assembly includes a first contact rope roller and a second contact rope roller; The diameter of the first contact rope roller is larger than that of the second contact rope roller. The first contact rope roller is in contact with the traction rope. The second contact rope roller is located on the bearing body and is coaxially arranged with the second trigger element.

12. The lifting device according to claim 9, characterized in that, The rope stacking detection mechanism further includes a second mounting base, which is disposed on the supporting body; The second trigger is disposed on the second mounting base, the second mounting base is provided with a trigger part, and the second trigger switch is disposed on the second trigger corresponding to the position of the trigger part.

13. The lifting device according to claim 1, characterized in that, Waste discharge holes are provided on the bottom wall of the supporting body.

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