Lifting device

Abstract

The utility model relates to the technical field of high-altitude operation, and provides lifting equipment which comprises a guide assembly, a vehicle body assembly and a traction device. The vehicle body assembly is movably matched with the guide assembly; the traction device comprises a driving main machine and a tensioning mechanism, and a traction rope of the driving main machine sequentially bypasses the tensioning mechanism and the top wheel assembly, is connected with the vehicle body assembly and is suitable for driving the vehicle body assembly to do lifting motion along the guide assembly; the tensioning mechanism comprises a mounting carrier, a tensioning assembly, a first adjusting assembly and a position detection assembly, the mounting carrier is arranged on the guide assembly, the tensioning assembly is movably arranged on the mounting carrier, the first adjusting assembly is connected with the mounting carrier and the tensioning assembly, and the position detection assembly is arranged on the tensioning assembly; when the traction rope is loosened to drive the tensioning assembly to move, the position detection assembly is suitable for moving along with the tensioning assembly to be triggered by the first adjusting assembly, so that the control device sends out alarm information, and the operation safety and reliability of the lifting equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work, in particular to a lifting device. Background Art

[0002] Lifting devices are widely used in various self-elevating platforms, such as the rising and falling of self-elevating drilling platforms, wind power installation platforms, salvage, drilling, pile driving, stone throwing and leveling construction operation platforms.

[0003] In the related art, after the lifting device operates for a period of time, the tensioning stroke of the traction rope will exceed the safety use standard, that is, the traction rope is slack. Since the tensioning device of the traction rope is generally installed at the bottom of the climbing aid, the tensioning state of the traction rope cannot be observed during operation. If the traction rope is slack during the operation of the lifting device, the climbing aid will continue to operate and risks such as slipping and falling will occur. It is urgent to improve the operation safety of the climbing aid. Summary of the Utility Model

[0004] The utility model provides a lifting device to solve the above technical defects in the prior art, which can improve the operation safety and reliability of the lifting device, and avoid the risks of slipping or falling of the vehicle body assembly due to the loosening of the traction rope.

[0005] The utility model provides a lifting device, including a guiding assembly, a vehicle body assembly and a traction device.

[0006] The guiding assembly is installed with a top wheel assembly; the vehicle body assembly is movably matched with the guiding assembly.

[0007] The traction device includes a driving host and a tensioning mechanism. The traction rope of the driving host sequentially bypasses the tensioning mechanism and the top wheel assembly, and is connected to the vehicle body assembly, and is adapted to drive the vehicle body assembly to perform lifting movement along the guiding assembly; the tensioning mechanism includes an installation carrier, a tensioning component, a first adjusting component and a position detection component. The installation carrier is arranged on the guiding assembly. The tensioning component is movably arranged on the installation carrier. The first adjusting component is respectively connected to the installation carrier and the tensioning component. The position detection component is arranged on the tensioning component; when the traction rope is loose to drive the tensioning component to move, the position detection component is adapted to move with the tensioning component to be triggered by the first adjusting component, so that the control device issues an alarm message.

[0008] According to a lifting device provided by the utility model, the first adjusting component includes:

[0009] An adjusting part, which is respectively connected to the installation carrier and the tensioning component;

[0010] An elastic element is sleeved on the adjusting component. One end of the elastic element abuts against the mounting carrier, and the other end of the elastic element abuts against the tensioning component.

[0011] An indicating element is sleeved on the adjusting component and is located between the elastic element and the mounting carrier.

[0012] According to a lifting device provided by the present utility model, the indicating element includes an indicating body and a triggering portion. The triggering portion is connected to the indicating body. The indicating body is sleeved on the adjusting component, and the triggering portion is located on the moving path of the position detecting component and is adapted to trigger the position detecting component.

[0013] According to a lifting device provided by the present utility model, the triggering portion includes:

[0014] A connecting section fixedly connected to the indicating body;

[0015] A triggering section. The first end of the triggering section is connected to the connecting section and is disposed at an angle with the connecting section. The second end of the triggering section extends along the moving path of the position detecting component and is adapted to keep abutting against the position detecting component when the position detecting component moves.

[0016] According to a lifting device provided by the present utility model, the triggering portion further includes:

[0017] A transition section, which is obliquely disposed between the connecting section and the triggering section.

[0018] According to a lifting device provided by the present utility model, the first adjusting component further includes an active adjusting member, which is sleeved on the adjusting component and is threadedly connected to the adjusting component. The active adjusting member is located between the indicating element and the mounting carrier.

[0019] According to a lifting device provided by the present utility model, the tensioning component includes a tensioning bracket and a tensioning wheel. The tensioning wheel is rotatably disposed on the tensioning bracket;

[0020] The adjusting component is connected to the tensioning bracket through a fastening component, and the position detecting component is disposed on the side wall of the tensioning bracket.

[0021] According to a lifting device provided by the present utility model, the tensioning component further includes an adapter, which is fixedly connected to the side wall of the tensioning bracket, and the position detecting component is disposed on the adapter.

[0022] According to a lifting device provided by the present utility model, the position detecting component includes a contact type position sensor or a proximity type position sensor.

[0023] According to a lifting device provided by the present utility model, the vehicle body assembly includes:

[0024] A vehicle body main body;

[0025] A pedal assembly, foldably connected to the vehicle body main body;

[0026] A second adjustment assembly, including a ratchet assembly and a pawl assembly. Both the ratchet assembly and the pawl assembly are arranged inside the vehicle body main body. The towing rope is fixedly arranged on the ratchet assembly. The pawl assembly is arranged on one side of the ratchet assembly. The pawl assembly cooperates with the ratchet assembly and is adapted to limit the ratchet assembly from rotating in a preset direction.

[0027] According to a lifting device provided by the present utility model, the ratchet assembly includes a drum body, a ratchet body, and a rope pressing member. The drum body is arranged on the vehicle body main body. The ratchet body is relatively arranged at positions near both ends of the drum body. The towing rope is wound around the drum body and is located between two relatively arranged ratchet bodies. The rope pressing member is fixed to the drum body and is adapted to press the towing rope.

[0028] According to a lifting device provided by the present utility model, the pawl assembly includes a pawl shaft, a pawl body, and a torsion member;

[0029] The pawl shaft is arranged on the vehicle body main body. The pawl body is arranged on the pawl shaft; the torsion member is sleeved on the pawl shaft. One end of the torsion member abuts against the pawl body, and the other end of the torsion member is connected to the vehicle body main body.

[0030] For the lifting device provided by the present utility model, by improving the structure of the tensioning mechanism and arranging a position detection assembly on the tensioning assembly, when the towing rope becomes loose and drives the tensioning assembly to move, the position detection assembly is adapted to move with the tensioning assembly so as to be triggered by the first adjustment assembly, thereby enabling the control device to send out an alarm message. Moreover, the control device can also control the vehicle body assembly to stop running. Only when the towing rope is tensioned to a preset condition can the control device control the vehicle body assembly to continue running, which can improve the safety and reliability of the operation of the lifting device and avoid the risk of the vehicle body assembly slipping or falling due to the loosening of the towing rope. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is one of the structural schematic diagrams of the lifting equipment provided by the embodiment of the present utility model.

[0033] Figure 2 It is the second structural schematic diagram of the lifting equipment provided by the embodiment of the present utility model.

[0034] Figure 3 It is the structural schematic diagram of the tensioning mechanism in the lifting equipment provided by the embodiment of the present utility model.

[0035] Figure 4 It is Figure 3 The enlarged view of part A in

[0036] Figure 5 It is the structural schematic diagram of the vehicle body assembly in the lifting equipment provided by the embodiment of the present utility model.

[0037] Figure 6 It is Figure 5 The enlarged view of part B in

[0038] Reference numerals:

[0039] 100, guiding assembly;

[0040] 200, vehicle body assembly; 210, vehicle body main body; 220, pedal assembly; 230, second adjusting assembly; 231, ratchet assembly; 2311, winding drum shaft; 2312, winding drum body; 2313, ratchet body; 2314, rope pressing member; 232, pawl assembly; 2321, pawl shaft; 2322, pawl body; 2323, torsion member;

[0041] 300, traction device; 310, traction rope; 320, tensioning mechanism; 321, mounting carrier; 322, tensioning assembly; 3221, tensioning bracket; 3222, tensioning wheel; 3223, adapter; 323, first adjusting assembly; 3231, adjusting component; 3232, elastic element; 3233, indicating element; 3234, indicating body; 3235, triggering part; 3235-1, connecting section; 3235-2, triggering section; 3235-3, transition section; 3236, active adjusting member; 324, position detecting assembly; 327, indicating plate. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0043] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0044] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0045] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Figure 1 is one of the schematic structural diagrams of the lifting device provided by the embodiments of the present utility model. Figure 2 is the second schematic structural diagram of the lifting device provided by the embodiments of the present utility model.

[0047] Refer to Figure 1 and Figure 2 According to [references not provided], the embodiments of the present utility model provide a lifting device, which includes a guiding assembly 100, a vehicle body assembly 200, a traction device 300, and a control device (not shown in the figure). The traction device 300 controls the vehicle body assembly 200 to perform lifting movement or stop running based on the signal of the control device.

[0048] The guiding assembly 100 is used to provide an installation platform and support for the vehicle body assembly 200 and the traction device 300, and the guiding assembly 100 can also provide a guiding function for the operation of the vehicle body assembly 200. Among them, the guiding assembly 100 may include a carrier and a guiding body. The carrier may be a ladder, and the guiding body may be a load-bearing rail or a fall-prevention rail installed on the ladder. A top wheel assembly is provided at the top of the guiding assembly 100.

[0049] The vehicle body assembly 200 is arranged on one side of the guiding assembly 100 and is movably matched with the guiding assembly 100. For example, the vehicle body assembly 200 and the guiding assembly 100 can achieve rolling cooperation through structures such as guiding wheels and anti-falling wheels, so that the vehicle body assembly 200 can perform lifting movement along the extension direction of the guiding assembly 100, and the vehicle body assembly 200 will not break away from the guiding assembly 100.

[0050] The traction device 300 includes a driving main machine (not shown in the figure) and a tensioning mechanism 320. The driving main machine can adopt a speed reduction motor well-known in the art. The output end of the speed reduction motor is connected to a driving drum. The speed reduction motor and the driving drum are coaxially arranged. A traction rope 310 is wound around the driving drum. The traction rope 310 sequentially bypasses the tensioning mechanism 320 and the top wheel assembly and is connected to the vehicle body assembly 200. When the driving main machine works and the driving drum rotates, the traction rope 310 is driven through the action of static friction between the traction rope 310 and the driving drum, so as to take in or pay out the traction rope 310, realizing the lifting movement of the vehicle body assembly 200 along the guide rail assembly. Among them, the speed of the speed reduction motor can be adjusted through a frequency converter. In practical applications, a speed reduction motor with a corresponding rated power can be configured according to the traction requirements, and a traction rope 310 with a corresponding strength can be selected. When the traction rope 310 is used for a period of time, the length of the traction rope 310 will change structurally, resulting in the relaxation of the traction rope 310.

[0051] Therefore, the tensioning mechanism 320 of the embodiment of the present invention includes an installation carrier 321, a tensioning component 322, a first adjustment component 323 and a position detection component 324. The shape of the installation carrier 321 is adaptively adjusted according to the installation requirements of the tensioning component 322 and the first adjustment component 323. The installation carrier 321 is fixed at a position near the lower part of the guiding assembly 100 through fasteners such as bolts. The tensioning component 322 is movably arranged on the installation carrier 321. The first adjustment component 323 is respectively connected to the installation carrier 321 and the tensioning component 322. The position detection component 324 is arranged on the tensioning component 322; when the traction rope 310 loosens and drives the tensioning component 322 to move, the position detection component 324 is adapted to move with the tensioning component 322 to be triggered by the first adjustment component 323, so that the control device issues an alarm message.

[0052] It can be understood that for the lifting device provided by the embodiment of the present utility model, by improving the structure of the tensioning mechanism 320, a position detection component 324 is arranged on the tensioning assembly 322. When the traction rope 310 becomes loose and drives the tensioning assembly 322 to move, the position detection component 324 is adapted to move with the tensioning assembly 322 and is triggered by the first adjustment component 323, so that the control device issues an alarm message. Moreover, the control device can also control the vehicle body assembly 200 to stop running. Only when the traction rope 310 is tensioned to a preset condition can the control device control the vehicle body assembly 200 to continue running, which can improve the safety and reliability of the operation of the lifting device and avoid the risk of the vehicle body assembly 200 slipping or falling due to the loosening of the traction rope 310.

[0053] It should be noted that in the embodiment of the present utility model, when the traction rope 310 becomes loose and drives the tensioning assembly 322 to move, the position detection component 324 is adapted to move with the tensioning assembly 322 and is triggered by the first adjustment component 323. When the control device issues an alarm message, the control device synchronously controls the vehicle body assembly 200 to stop running to avoid the risk of the vehicle body assembly 200 slipping or falling due to continuous running. At this time, manual intervention can be carried out to tension the traction rope 310 by adjusting the tensioning mechanism 320.

[0054] Figure 3 It is a schematic structural diagram of the tensioning mechanism 320 in the lifting device provided by the embodiment of the present utility model. Figure 4 is Figure 3 an enlarged view of part A in

[0055] Referring to Figure 3 In some embodiments of the present utility model, the first adjustment component 323 includes an adjustment part 3231, an elastic element 3232, and an indicating element 3233.

[0056] The adjustment part 3231 can be a long bolt or a rod-shaped part with local threads. The adjustment part 3231 is connected to the installation carrier 321 through a fastening component, and the adjustment part 3231 is connected to the tensioning assembly 322 through a fastening component. Among them, the fastening component can be a single nut, or the fastening component is a plurality of nuts stacked, and the fastening component can also be a stop structure such as a circlip.

[0057] The elastic element 3232 can be a spring. The elastic element 3232 is sleeved on the outer surface of the adjusting component 3231. One end of the elastic element 3232 can abut against the fastening component that fixes the adjusting component 3231 on the mounting carrier 321, and the other end of the elastic element 3232 abuts against the tensioning component 322. Equivalently, the rod-shaped adjusting component 3231 penetrates through the plate member of the mounting carrier 321. Nuts are provided on both sides of the plate member of the mounting carrier 321. The upper end of the elastic element 3232 can abut against the nut located below the plate member of the mounting carrier 321. In order to increase the contact area between the nut and the elastic element 3232, a gasket can also be provided between the nut and the elastic element 3232. The cross-sectional area of the gasket is larger than the area of the end face of the nut to increase the contact area between the nut and the elastic element 3232, thereby increasing the effect of the elastic element 3232 on the gasket. The other end of the elastic element 3232 penetrates through the following tensioning bracket 3221 of the tensioning component 322.

[0058] The indicating element 3233 is sleeved on the outer surface of the adjusting component 3231, and the indicating element 3233 is located between the elastic element 3232 and the fastening component that fixes the adjusting component 3231 on the mounting carrier 321.

[0059] When the towing rope 310 is in a tensioned state, the torque of the towing rope 310 on the tensioning component 322 and the torque of the elastic element 3232 reach dynamic equilibrium, that is, the torque of the towing rope 310 on the tensioning component 322 overcomes the elastic force of the elastic element 3232, so that the tensioning component 322 guides the towing rope 310 to be tensioned and retracted normally.

[0060] When the towing rope 310 is in a loose state, the torque of the towing rope 310 on the tensioning component 322 is less than the elastic force of the elastic element 3232. The elastic element 3232 recovers its elastic deformation, and then pushes the tensioning component 322 to move downward, thereby driving the position detection component 324 provided on the tensioning component 322 to move downward synchronously. After the position detection component 324 collides with the indicating element 3233, it is triggered and transmits a trigger signal to the control device of the lifting equipment. The control device controls the driving host to stop running and issues an alarm message at the same time to ensure the safety of the operation of the lifting equipment and avoid the risk of slipping or falling when the vehicle body assembly 200 continues to run. At this time, manual intervention can be carried out to tension the towing rope 310 by adjusting the tensioning mechanism 320.

[0061] Continue to refer to Figure 3 , in some embodiments of the present invention, the indicating element 3233 includes an indicating body 3234 and a triggering portion 3235. The triggering portion 3235 is connected to the indicating body 3234. The indicating body 3234 is sleeved on the adjusting component 3231. The triggering portion 3235 is located on the moving path of the position detection component 324 and is adapted to trigger the position detection component 324.

[0062] Correspondingly, in the embodiment of the present utility model, a trigger portion 3235 is formed by extending outward on the basis of the original indication body 3234. The trigger portion 3235 is located on the moving path of the position detection component 324 and can trigger the position detection component 324 to act. At the same time, an indication plate 327 is provided on the outer surface of the tensioning component 322, and indication marks can be provided on the indication plate 327. Thus, according to the relative position between the indication body 3234 and the indication plate 327, it can be judged whether the tension of the towing rope 310 meets the preset tension requirement, which is convenient for adjusting the tension of the towing rope 310 and can reduce the installation time and maintenance time of the vehicle body assembly 200.

[0063] Refer to Figure 4 , further, the trigger portion 3235 includes a connection section 3235-1 and a trigger section 3235-2. The connection section 3235-1 is fixedly connected to the indication body 3234; the first end of the trigger section 3235-2 is connected to the connection section 3235-1 and is arranged at an angle with the connection section 3235-1; the second end of the trigger section 3235-2 extends along the moving path of the position detection component 324 and is adapted to keep in contact with the position detection component 324 when the position detection component 324 moves.

[0064] Among them, the angle between the trigger section 3235-2 and the connection section 3235-1 can include 90°, excluding 0° and 180°, that is, there is no parallel or coplanar situation between the trigger section 3235-2 and the connection section 3235-1. Correspondingly, the trigger section 3235-2 and the connection section 3235-1 are connected to form an "L"-shaped trigger portion 3235.

[0065] The trigger section 3235-2 and the moving path of the position detection component 324 can be arranged in parallel. When the position detection component 324 moves with the tensioning component 322 and contacts the trigger section 3235-2, the trigger section 3235-2 can always keep in contact with the contact point of the position detection component 324, thereby ensuring the reliability of the slack detection of the towing rope 310.

[0066] Continue to refer to Figure 4, in some embodiments of the present utility model, based on the above embodiments and different from the above embodiments, in order to prevent rigid collision when the position detection component 324 abuts against the trigger section 3235-2, a transition section 3235-3 is obliquely arranged between the connection section 3235-1 and the trigger section 3235-2. Equivalently, the gap between the transition section 3235-3 and the contact point of the position detection component 324 gradually decreases. When the contact point of the position detection component 324 is located at the upper position of the transition section 3235-3, it will not be triggered to act. It is not until the contact point of the position detection component 324 enters the trigger section 3235-2 from the transition section 3235-3 that the position detection component 324 can be triggered to act. With this setting, it can avoid rigid collision between the position detection component 324 and the trigger section 3235-2 and avoid damage to the position detection component 324.

[0067] Continue to refer to Figure 3 , in some embodiments of the present utility model, the first adjustment component 323 further includes an active adjustment member 3236. The active adjustment member 3236 is sleeved on the adjustment component 3231 and is threadedly connected to the adjustment component 3231. The active adjustment member 3236 is located between the indicating element 3233 and the first fastening component. Equivalently, by adjusting the active adjustment member 3236, the setting positions of the elastic element 3232 and the indicating element 3233 on the adjustment component 3231 are adjusted, so that the indicating element 3233 can be set to match the position of the position detection component 324, thereby improving the reliability of the tensioning mechanism 320; in addition, by setting the active adjustment member 3236 to adjust the compression degree of the elastic element 3232, it is convenient to operate the active adjustment member 3236. It is avoided that the fastening component not only fixes the adjustment component 3231 but also adjusts the compression degree of the elastic element 3232.

[0068] Among them, the active adjustment member 3236 may include a plurality of stacked nuts, gaskets and snap rings. The plurality of stacked nuts, gaskets and snap rings are all sleeved on the outer surface of the adjustment component 3231. The gasket is arranged between the nut and the indicating element 3233, and the snap ring is arranged on the other side of the nut.

[0069] Continue to refer to Figure 3 , in some embodiments of the present utility model, the tensioning component 322 includes a tensioning bracket 3221 and a tensioning wheel 3222. The tensioning wheel 3222 is rotatably arranged on the tensioning bracket 3221; the adjustment component 3231 is connected to the tensioning bracket 3221 through a fastening component, and the position detection component 324 is arranged on the side wall of the tensioning bracket 3221.

[0070] Further, the tensioning component 322 further includes an adapter 3223. The adapter 3223 is fixedly connected to the side wall of the tensioning bracket 3221, and the position detection component 324 is arranged on the adapter 3223.

[0071] By providing the adapter 3223 to install the position detection assembly 324 on the side wall of the tension bracket 3221, it is convenient to install and remove the position detection assembly 324 compared to directly installing the position detection assembly 324 on the side wall of the tension bracket 3221. In addition, when the position detection assembly 324 is installed using the adapter 3223, the adapter 3223 is fixed to the tension bracket 3221 by bolts at the bottom, which has sufficient operating space and installation space, and is more convenient to operate.

[0072] It should also be noted that, in some embodiments of the present invention, the position detection component 324 includes a contact position sensor or a proximity position sensor, which detects the position of the trigger part 3235 and converts it into an output signal to feed back to the control device of the lifting equipment, thereby performing closed-loop control on the driving host of the lifting equipment to realize the electrical linkage feedback function of the driving device, thereby preventing the traction rope 310 from loosening and causing the body assembly 200 to continue to run, making the lifting equipment safer in operation.

[0073] When the position sensor is a contact sensor, the contact sensor may include a travel switch, a two-dimensional matrix position sensor, etc. For example, the position detection component 324 is a travel switch, and the travel switch is arranged on the extension line of the trigger part 3235. When the travel switch moves with the tensioning bracket 3221, the travel switch touches the trigger part 3235, and the contact inside the travel switch moves, thereby realizing monitoring and control.

[0074] When the position sensor is a proximity sensor, the proximity sensor may include electromagnetic, photoelectric, differential transformer, eddy current, capacitor, reed switch or Hall, etc. The proximity sensor does not need to contact the trigger part 3235. When the trigger part 3235 and the proximity sensor are close to a set distance, a switch that sends an "action" signal is used to achieve monitoring and control. For example, when the position detection component 324 is an electromagnetic sensor, the trigger part 3235 is a structure made of metal material. When the position detection component 324 moves with the tensioning bracket 3221, the position detection component 324 and the trigger part 3235 are close to a set distance, and the switch that sends an "action" signal is used to feedback information provided by the control device of the lifting device provided by the detection signal. The control device of the lifting device controls the driving host to stop running and sends an alarm message at the same time.

[0075] Figure 5 It is a structural schematic diagram of a vehicle body assembly 200 in a lifting device provided in an embodiment of the utility model.

[0076] See also Figure 5, in some embodiments of the present utility model, the vehicle body assembly 200 includes a vehicle body main body 210, a pedal assembly 220, and a second adjustment assembly 230. The pedal assembly 220 is foldably connected to a position near the lower part of the vehicle body main body 210. The second adjustment assembly 230 includes a ratchet assembly 231 and a pawl assembly 232. Both the ratchet assembly 231 and the pawl assembly 232 are disposed inside the vehicle body main body 210. The towing rope 310 is fixedly arranged on the ratchet assembly 231. The pawl assembly 232 is disposed on one side of the ratchet assembly 231. The pawl assembly 232 cooperates with the ratchet assembly 231 and is adapted to restrict the ratchet assembly 231 from rotating in a preset direction. That is, the pawl assembly 232 is used to restrict the rotation direction of the ratchet assembly 231 so that the ratchet assembly 231 can rotate along a preset direction to avoid the situation of loose rope.

[0077] Figure 6 Figure 5 Enlarged view of part B.

[0078] Refer to Figure 6 , in some embodiments of the present utility model, the ratchet assembly 231 includes a reel body 2312, a ratchet body 2313, and a rope pressing member 2314. The reel body 2312 is disposed on the vehicle body main body 210. The ratchet body 2313 is relatively disposed at positions near both ends of the reel body 2312. The towing rope 310 is wound around the reel body 2312 and is located between two relatively arranged ratchet bodies 2313. The rope pressing member 2314 is fixed to the reel body 2312 and is adapted to press the towing rope 310.

[0079] Among them, the reel body 2312 and the ratchet body 2313 can be integrally formed, or the reel body 2312 and the ratchet body 2313 can be separately provided, and then the ratchet body 2313 is arranged at positions near both ends of the reel body 2312 by interference fit.

[0080] Among them, the rope pressing member 2314 can be a block structure or a plate structure, and any structure that can press and fix the towing rope 310 on the reel body 2312 is acceptable.

[0081] During the installation process, the towing rope 310 is wound around the reel body 2312, and the rope pressing member 2314 is fixed to the reel body 2312 by fasteners such as bolts to press the towing rope 310 and realize the fixation of the towing rope 310.

[0082] Continue to refer to Figure 6, in some embodiments of the present utility model, two sets of ratchet assemblies 231 are provided. Each set of ratchet assemblies 231 further includes a mounting bracket. The mounting bracket is mounted on the vehicle body main body 210 through fasteners such as bolts. Then, the reel shafts 2311 are respectively passed through from both sides of the vehicle body main body 210, sequentially passing through the side wall of the vehicle body main body 210, the reel body 2312, and the mounting bracket. Then, nuts are used to fix the reel shafts 2311 on the side wall of the vehicle body main body 210 and the mounting bracket.

[0083] Continue to refer to Figure 6 , in some embodiments of the present utility model, the pawl assembly 232 includes a pawl shaft 2321, a pawl body 2322, and a torsion member 2323; the pawl shaft 2321 is provided on the vehicle body main body 210 and is arranged in parallel with the reel body 2312; the pawl body 2322 is provided on the pawl shaft 2321; the torsion member 2323 is sleeved on the pawl shaft 2321. One end of the torsion member 2323 abuts against the pawl body 2322, and the other end of the torsion member 2323 is connected to the vehicle body main body 210.

[0084] Among them, the torsion member 2323 can be a structure such as a torsion spring. The ends of the torsion spring are fixed to the vehicle body main body 210 and the pawl body 2322. When the pawl body 2322 rotates around the center of the torsion spring, the torsion spring generates a torque or rotational force to pull the pawl body 2322 back to the initial position.

[0085] During the installation process, the pawl shaft 2321 is passed through from the side of the vehicle body main body 210, sequentially passing through the pawl body 2322 and the torsion spring. Nuts are used to fix the pawl shaft 2321 on the vehicle body main body 210. One end of the torsion spring abuts against the pawl body 2322, and the other end of the torsion spring abuts against the vehicle body main body 210. The pawl body 2322 cooperates with the teeth on the ratchet body 2313 to prevent the two-way rotation of the ratchet body 2313, so that the reel body 2312 rotates in a preset single direction, realizing the tightening or loosening of the traction rope 310, thereby achieving the purpose of tension adjustment of the traction rope 310.

[0086] For the lifting device provided by the embodiments of the present utility model, when the position detection component 324 is triggered, the control device starts the alarm function; at the same time, the second adjustment component 230 with the cooperation of ratchet and pawl can directly perform tension adjustment on the traction rope 310 on the vehicle body assembly 200, which is convenient to operate. It can prevent the traction rope 310 from driving the vehicle body assembly 200 to move when the tension is insufficient, improve the safety and reliability of the operation of the lifting device, and avoid the risk of the vehicle body assembly 200 slipping or falling due to the loosening of the traction rope 310.

[0087] It can be understood that for the lifting equipment provided by the embodiments of the present utility model, by improving the structure of the tensioning mechanism 320, a position detection component 324 is arranged on the tensioning assembly 322. When the towing rope 310 becomes loose and drives the tensioning assembly 322 to move, the position detection component 324 is adapted to move with the tensioning assembly 322 and be triggered by the first adjustment component 323, so that the control device issues an alarm message. A second adjustment component 230 is arranged on the vehicle body assembly 200. When the control device issues an alarm message, the drum body 2312 in the second adjustment component 230 is rotated to tighten the towing rope 310. While the towing rope 310 is being tightened, the tensioning wheel 3222 and the tensioning bracket 3221 move upward synchronously. At the same time, the relative position between the indicating body 3234 and the indicating plate 327 is observed. When the indicating body 3234 reaches the middle position of the indicating disc, the rotation of the drum body 2312 is stopped. At this time, the position detection component 324 is away from the triggering part 3235, and the control device automatically cancels the alarm.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements 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 utility model.

Claims

1. A lifting device, characterized in that: include: A guide assembly, equipped with a top wheel assembly; A vehicle body assembly, movably cooperating with the guide assembly; The traction device includes a driving main unit and a tensioning mechanism. The traction rope of the driving main unit is sequentially passed around the tensioning mechanism and the top wheel assembly and connected to the vehicle body assembly, suitable for driving the vehicle body assembly to perform lifting and lowering movements along the guide assembly; the tensioning mechanism includes a mounting carrier, a tensioning assembly, a first adjustment assembly and a position detection assembly. The mounting carrier is arranged on the guide assembly, the tensioning assembly can be movably arranged on the mounting carrier, the first adjustment assembly is respectively connected to the mounting carrier and the tensioning assembly, and the position detection assembly is arranged on the tensioning assembly; when the traction rope is loosened to drive the tensioning assembly to move, the position detection assembly is suitable for moving with the tensioning assembly to be triggered by the first adjustment assembly, so that the control device sends an alarm message.

2. The lifting device according to claim 1, characterized in that: The first adjustment component comprises: An adjusting component, connected to the mounting carrier and the tensioning assembly respectively; An elastic element, sleeved on the adjusting component, one end of the elastic element abuts against the mounting carrier, and the other end of the elastic element abuts against the tensioning assembly; The indicating element is sleeved on the adjusting component and located between the elastic element and the mounting carrier.

3. The lifting device according to claim 2, characterized in that: The indicating element comprises an indicating body and a triggering part, wherein the triggering part is connected to the indicating body, the indicating body is sleeved on the adjusting component, and the triggering part is located on the moving path of the position detecting component and is suitable for triggering the position detecting component.

4. The lifting device according to claim 3, characterized in that: The trigger unit comprises: A connecting section, fixedly connected to the indicating body; A trigger segment, wherein the first end of the trigger segment is connected to the connecting segment and is arranged at an angle to the connecting segment; the second end of the trigger segment extends along the moving path of the position detection component and is suitable for maintaining contact with the position detection component when the position detection component moves.

5. The lifting device according to claim 4, characterized in that: The trigger unit also includes: A transition section is obliquely arranged between the connecting section and the triggering section.

6. The lifting device according to claim 2, characterized in that: The first adjustment component further includes an active adjustment member, which is sleeved on the adjustment component and threadedly connected to the adjustment component. The active adjustment member is located between the indicating element and the mounting carrier.

7. The lifting device according to claim 2, characterized in that: The tensioning assembly comprises a tensioning bracket and a tensioning wheel, and the tensioning wheel is rotatably arranged on the tensioning bracket; The adjusting component is connected to the tensioning bracket through a fastening assembly, and the position detecting assembly is arranged on a side wall of the tensioning bracket.

8. The lifting device according to claim 7, characterized in that: The tensioning assembly further includes an adapter, which is fixedly connected to the side wall of the tensioning bracket, and the position detection assembly is arranged on the adapter.

9. The lifting device according to any one of claims 1 to 8, characterized in that: The position detection component includes a contact position sensor or a proximity position sensor.

10. The lifting device according to any one of claims 1 to 8, characterized in that: The vehicle body assembly comprises: The main body of the vehicle; A pedal assembly, foldably connected to the vehicle body; The second adjustment component includes a ratchet component and a pawl component, both of which are arranged inside the vehicle body, the traction rope is fixed to the ratchet component, the pawl component is arranged on one side of the ratchet component, and the pawl component cooperates with the ratchet component to limit the rotation of the ratchet component along a preset direction.

11. The lifting device according to claim 10, characterized in that: The ratchet assembly includes a drum body, a ratchet body and a rope pressing member. The drum body is arranged on the vehicle body, and the ratchet body is relatively arranged near the two ends of the drum body. The traction rope is wound around the drum body and is located between the two relatively arranged ratchet bodies. The rope pressing member is fixed to the drum body and is suitable for pressing the traction rope.

12. The lifting device according to claim 11, characterized in that: The pawl assembly includes a pawl shaft, a pawl body and a torque member; The pawl shaft is arranged on the vehicle body, and the pawl body is arranged on the pawl shaft; the torque member is sleeved on the pawl shaft, one end of the torque member abuts against the pawl body, and the other end of the torque member is connected to the vehicle body.

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