Lifting device and method of using the same

Abstract

The present invention belongs to the technical field of lifting equipment, and discloses a lifting device and a method for using the same. The lifting device includes a lifting mechanism and a two-way self-locking mechanism. The lifting mechanism includes a lifting platform that can be lifted and lowered in a vertical direction. The two-way self-locking mechanism includes: an anti-falling self-locking rod, including a bearing rod and a plurality of two-way anti-falling blocks. The bearing rod extends in a vertical direction, and the plurality of two-way anti-falling blocks are convexly arranged on the outer peripheral surface of the bearing rod at intervals; an anti-falling component is arranged on the outer wall of the lifting platform facing the anti-falling self-locking rod. The anti-falling component includes a self-locking plate rotatably connected to the outer wall. When the lifting platform is lifted and lowered, the self-locking plate can contact the two-way anti-falling block without hindering the lifting and lowering of the lifting platform. When the lifting platform falls abnormally, the self-locking plate can stop at any two-way anti-falling block to prevent the abnormal falling of the lifting platform. The present invention can effectively prevent the accidental falling of the lifting platform and improve the safety and reliability of the lifting device.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and in particular to a lifting device and a use method thereof. Background Art

[0002] Lifting devices are mechanical equipment that can operate in vertical space and play an important role in the development of contemporary society. For example, in the field of construction, lifting devices usually replace traditional scaffolding or electric hanging baskets to solve many problems of traditional scaffolding, such as high material consumption, long erection time, and inconvenient operation, or electric hanging baskets, such as poor stability and high operating risks.

[0003] The current lifting device is usually installed on the pillars of the building and uses a gear rack transmission to achieve lifting. It is easy to operate and construction workers can flexibly adjust the height of the work platform according to work needs. However, it is difficult to achieve the self-locking function of the existing lifting device. Failure to self-lock may cause the work platform to accidentally slide or fall during use, thus posing a safety hazard.

[0004] Therefore, it is urgent to provide a lifting device and a method of using the same to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a lifting device and a method of using the same, which can effectively prevent the lifting platform from accidentally falling and improve the safety and reliability of the lifting device.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a lifting device, comprising a lifting mechanism and a bidirectional self-locking mechanism, wherein the lifting mechanism comprises a lifting platform capable of being lifted and lowered in a vertical direction, and the bidirectional self-locking mechanism comprises:

[0008] The anti-fall self-locking rod comprises a bearing rod and a plurality of bidirectional anti-fall blocks, wherein the bearing rod extends in a vertical direction, and the plurality of bidirectional anti-fall blocks are protruded and arranged at intervals on the outer peripheral surface of the bearing rod;

[0009] An anti-fall component is arranged on the outer wall of the lifting platform facing the anti-fall self-locking rod. The anti-fall component includes a self-locking plate rotatably connected to the outer wall. When the lifting platform is lifted or lowered, the self-locking plate can contact the two-way anti-fall block without hindering the lifting or lowering of the lifting platform. When the lifting platform falls abnormally, the self-locking plate can stop at any of the two-way anti-fall blocks to prevent the lifting platform from falling abnormally.

[0010] In some embodiments, the bidirectional self-locking mechanism has an upward anti-falling self-locking mode and a downward anti-falling self-locking mode;

[0011] When the lifting platform is ascending, the two-way self-locking mechanism is in the ascending anti-falling self-locking mode, the self-locking plate and the part of the bearing rod below the self-locking plate are arranged at an obtuse angle, and the self-locking plate can be pushed away by each of the two-way anti-falling blocks as the lifting platform ascends, and automatically resets after passing each of the two-way anti-falling blocks; an ascending self-locking groove is provided on the top of each of the two-way anti-falling blocks, and when the lifting platform falls abnormally, the self-locking plate can be stuck in the ascending self-locking groove to prevent the lifting platform from continuing to fall;

[0012] When the lifting platform descends, the two-way self-locking mechanism is in the downward anti-falling self-locking mode, and the self-locking plate and the part of the load-bearing rod below the self-locking plate are arranged at an acute angle. The self-locking plate can be pushed open by each of the two-way anti-falling blocks as the lifting platform descends, and automatically resets after passing each of the two-way anti-falling blocks. When the lifting platform falls abnormally, the self-locking plate can automatically stop at the two-way anti-falling blocks to prevent the lifting platform from continuing to fall.

[0013] In some embodiments, the anti-fall assembly also includes a reversing motor and a first spring shaft, the reversing motor is connected to the outer wall, the first spring shaft is connected to the output end of the reversing motor, and the self-locking plate is connected to an end of the first spring shaft away from the reversing motor. The first spring shaft can enable the self-locking plate to automatically reset after passing each of the bidirectional anti-fall blocks.

[0014] In some embodiments, the anti-fall assembly also includes a first electromagnet and a descending anti-fall device, the first electromagnet and the descending anti-fall device are both connected to the outer wall, the first electromagnet can adsorb the self-locking plate to prevent the self-locking plate from rotating, the descending anti-fall device is arranged below the self-locking plate, the descending anti-fall device includes a mounting seat, a lifting assembly and an anti-fall top plate, the mounting seat is connected to the outer wall, the lifting assembly is connected to the mounting seat, and the anti-fall top plate is connected to the movable end of the lifting assembly, the anti-fall top plate can be moved relative to the mounting seat in a direction close to the self-locking plate and press the self-locking plate through the lifting assembly, so as to prevent the self-locking plate from rotating together with the first electromagnet.

[0015] In some embodiments, the lifting assembly includes a fixed seat, a lifting rod, a second electromagnet, a permanent magnet piston, a locking tooth and a locking groove. The lifting rod is partially located inside the fixed seat, the second electromagnet is arranged on the inner bottom wall of the fixed seat, the permanent magnet piston is connected to the bottom end of the lifting rod, the permanent magnet piston can generate a repulsive force with the second electromagnet to drive the lifting rod to extend upward relative to the fixed seat, the locking tooth is connected to the lifting rod, and the number of the locking grooves is multiple, and the multiple locking grooves are linearly arranged on the inner side wall of the fixed seat. When the lifting rod is extended upward, the locking teeth are inserted into the locking grooves one by one from bottom to top.

[0016] In some embodiments, the descent arrester also includes a connecting plate, a second spring shaft, a first connecting shaft, a spring cylinder and a third spring shaft, the connecting plate is connected to the movable end of the lifting assembly, the anti-fall top plate is connected to the connecting plate through the second spring shaft, the spring cylinder is connected to the connecting plate through the third spring shaft, an end of the anti-fall top plate away from the second spring shaft and an end of the spring cylinder away from the third spring shaft are connected through the first connecting shaft, and the anti-fall top plate, the spring cylinder and the connecting plate are arranged to form a triangular structure.

[0017] In some embodiments, the lifting mechanism also includes a guide rod, a traction rope and a connecting slider, the guide rod extends in a vertical direction, the connecting slider is slidably connected to the guide rod, the lifting platform is connected to the connecting slider, the traction rope is arranged on the lifting platform, and the traction rope is used to drive the lifting platform to lift and lower.

[0018] In some embodiments, the lifting mechanism further includes a counterweight block, the counterweight block and the lifting platform are respectively connected to opposite ends of the connecting slider, and the traction rope is provided on both the counterweight block and the lifting platform.

[0019] In some embodiments, the anti-falling components are provided in two groups, and the two groups of anti-falling components are respectively located on opposite sides of the anti-falling self-locking rod.

[0020] In a second aspect, the present invention provides a method for using a lifting device, the method for using the lifting device comprising:

[0021] The upward anti-falling self-locking mode of the two-way self-locking mechanism is activated, so that the self-locking plate and the portion of the bearing rod below the self-locking plate are arranged at an obtuse angle;

[0022] After starting the upward anti-fall self-locking mode, start the lifting platform to make the lifting platform rise in the vertical direction;

[0023] When the lifting platform rises to a predetermined height, the lifting platform is paused and operations are performed at the predetermined height;

[0024] After the operation at the predetermined height is completed, the two-way self-locking mechanism is switched from the upward anti-falling self-locking mode to the downward anti-falling self-locking mode, so that the self-locking plate and the part of the load-bearing rod below the self-locking plate are set at an acute angle, and the lifting platform is started again to make the lifting platform descend in the vertical direction.

[0025] Beneficial effects of the present invention:

[0026] The lifting device and the use method thereof provided by the present invention, by providing a two-way self-locking mechanism including an anti-fall self-locking rod and an anti-fall assembly, enable multiple two-way anti-fall blocks on the anti-fall self-locking rod to provide multi-point anti-fall support when the lifting platform rises and falls, and the self-locking plate cooperates with each two-way anti-fall block to ensure that the lifting platform always has a stable self-locking function during the entire lifting process, thereby effectively preventing the lifting platform from accidentally falling and improving the safety and reliability of the lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0028] Figure 1 is a schematic diagram of the three-dimensional structure of a lifting device under a viewing angle provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the three-dimensional structure of the lifting device provided by an embodiment of the present invention from another perspective;

[0030] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0031] Figure 4 is a schematic diagram of a bidirectional self-locking mechanism provided by an embodiment of the present invention in an upward anti-falling self-locking mode;

[0032] Figure 5 is a cross-sectional view of a fall-prevention self-locking rod provided by an embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of a bidirectional self-locking mechanism provided by an embodiment of the present invention in a downward anti-falling self-locking mode;

[0034] Figure 7 It is a schematic diagram of a bidirectional self-locking mechanism provided by an embodiment of the present invention being in a downward anti-falling self-locking mode, and a self-locking plate being stopped by a bidirectional anti-falling block;

[0035] Figure 8 It is a schematic diagram of the internal structure of the jacking assembly provided in an embodiment of the present invention.

[0036] In the figure:

[0037] 100, lifting mechanism; 110, lifting platform; 111, outer wall; 120, guide rod; 130, traction rope; 140, connecting slider; 150, counterweight;

[0038] 200. Two-way self-locking mechanism;

[0039] 1. Anti-fall self-locking rod; 11. Load-bearing rod; 12. Two-way anti-fall block; 13. Upward self-locking groove;

[0040] 2. Anti-fall assembly; 21. Self-locking plate; 22. Reversing motor; 23. First spring shaft; 24. First electromagnet; 25. Descending anti-fall device; 251. Mounting seat; 252. Lifting assembly; 2521. Fixed seat; 2522. Lifting rod; 2523. Second electromagnet; 2524. Permanent magnet piston; 2525. Locking tooth; 2526. Locking groove; 253. Anti-fall top plate; 254. Connecting plate; 255. Second spring shaft; 256. First connecting shaft; 257. Spring cylinder; 258. Third spring shaft. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] like Figure 1 to Figure 7 As shown, the lifting device provided in this embodiment includes a lifting mechanism 100 and a two-way self-locking mechanism 200. The lifting mechanism 100 includes a lifting platform 110 that can be lifted and lowered in a vertical direction.

[0049] The lifting platform 110 may be a material feeding box for feeding materials, or may be a platform for construction workers to stand on, which is not specifically limited here.

[0050] The two-way self-locking mechanism 200 includes an anti-falling self-locking rod 1 and an anti-falling component 2 .

[0051] The anti-fall self-locking rod 1 comprises a bearing rod 11 and a plurality of bidirectional anti-fall blocks 12, the bearing rod 11 extends in a vertical direction, and the plurality of bidirectional anti-fall blocks 12 are convexly arranged at intervals on the outer peripheral surface of the bearing rod 11. For example, when the lifting device is applied to construction, the bearing rod 11 can be fixed to the ground or to a building.

[0052] The anti-falling assembly 2 is arranged on the outer wall 111 of the lifting platform 110 facing the anti-falling self-locking rod 1. The anti-falling assembly 2 includes a self-locking plate 21 rotatably connected to the outer wall 111. When the lifting platform 110 is lifted or lowered, the self-locking plate 21 can contact the two-way anti-falling block 12 without hindering the lifting or lowering of the lifting platform 110. When the lifting platform 110 falls abnormally, the self-locking plate 21 can stop at any two-way anti-falling block 12 to prevent the abnormal falling of the lifting platform 110. That is, the two-way self-locking mechanism 200 means that the self-locking function can be realized in both the ascending and descending directions of the lifting platform 110 to prevent the lifting platform 110 from falling accidentally.

[0053] The lifting device provided in this embodiment is provided with a two-way self-locking mechanism 200 including an anti-fall self-locking rod 1 and an anti-fall assembly 2, so that the multiple two-way anti-fall blocks 12 on the anti-fall self-locking rod 1 can provide multi-point anti-fall support when the lifting platform 110 rises and falls, and the self-locking plate 21 cooperates with each two-way anti-fall block 12 to ensure that the lifting platform 110 always has a stable self-locking function during the entire lifting process, thereby effectively preventing the lifting platform 110 from accidentally falling and improving the safety and reliability of the lifting device.

[0054] like Figure 2 and Figure 4 As shown, in some embodiments, the anti-falling assembly 2 is provided in two groups, and the two groups of anti-falling assembly 2 are respectively located on opposite sides of the anti-falling self-locking rod 1. In this configuration, the two groups of anti-falling assembly 2 each include a self-locking plate 21, and the two self-locking plates 21 can be stopped at the two-way anti-falling block 12 at the same time, so that the lifting platform 110 is subjected to a relatively balanced supporting force, which helps to improve the stability of the device.

[0055] Specifically, Figure 4 As shown, two groups of anti-fall components 2 are respectively arranged on the left and right sides of the anti-fall self-locking rod 1. In order to facilitate and clearly describe the technical solution, the anti-fall component 2 on the left side is taken as an example for explanation below. The anti-fall component 2 on the right side is the same. Therefore, the anti-fall component 2 on the right side will not be described in detail.

[0056] In some embodiments, the bidirectional self-locking mechanism 200 has an upward anti-falling self-locking mode and a downward anti-falling self-locking mode.

[0057] like Figure 4 and Figure 5 As shown, when the lifting platform 110 goes up, the two-way self-locking mechanism 200 is in the upward anti-falling self-locking mode, and the self-locking plate 21 and the part of the load-bearing rod 11 below the self-locking plate 21 are arranged at an obtuse angle. The self-locking plate 21 can be pushed away in the clockwise direction by each two-way anti-falling block 12 as the lifting platform 110 goes up, and automatically resets after passing each two-way anti-falling block 12. An upward self-locking groove 13 is provided on the top of each two-way anti-falling block 12. When the lifting platform 110 falls abnormally, the self-locking plate 21 can be stuck in the upward self-locking groove 13 to prevent the lifting platform 110 from falling further.

[0058] like Figure 6 and Figure 7 As shown, when the lifting platform 110 is descending, the two-way self-locking mechanism 200 is in the downward anti-falling self-locking mode, and the self-locking plate 21 and the part of the load-bearing rod 11 located below the self-locking plate 21 are arranged at an acute angle. The self-locking plate 21 can be pushed away in the counterclockwise direction by each two-way anti-falling block 12 as the lifting platform 110 descends, and automatically resets after passing each two-way anti-falling block 12. When the lifting platform 110 falls abnormally, the self-locking plate 21 can automatically stop at the two-way anti-falling block 12 to prevent the lifting platform 110 from falling further. That is: when the lifting platform 110 falls abnormally, the self-locking plate 21 is set to be unable to rotate counterclockwise, so that the self-locking plate 21 is stopped at the two-way anti-falling block 12.

[0059] Through such a setting, the self-locking function can provide reliable anti-fall protection under both the upward and downward working conditions of the lifting platform 110. At the same time, the self-locking plate 21 can be automatically opened and reset during the lifting process without affecting the normal lifting. In addition, when the lifting platform 110 falls accidentally, the self-locking plate 21 can automatically snap into the upward self-locking groove 13 or automatically stop at the two-way anti-fall block 12, providing an automatic two-way self-locking function, eliminating the need for the operator to manually control the self-locking mechanism, and reducing the risk of human error during operation.

[0060] Specifically, it is possible to determine whether the lifting platform 110 is falling abnormally by monitoring the motion state of the lifting platform 110. For example, the descending speed or acceleration of the lifting platform 110 can be monitored by a speed sensor. If the monitored descending speed or acceleration exceeds a safety threshold, it can be determined that the lifting platform 110 is falling abnormally. At this time, the self-locking function of the two-way self-locking mechanism 200 is immediately triggered to prevent the lifting platform 110 from continuing to fall. The specific monitoring system and the corresponding control system are set up in the mature existing technology in this field and will not be described in detail here.

[0061] Alternatively, if Figure 5 As shown, the upward self-locking groove 13 can be configured to have a V-shaped cross-section so that the self-locking plate 21 can be smoothly inserted into the upward self-locking groove 13 .

[0062] like Figure 3 As shown, in some embodiments, the anti-falling assembly 2 further includes a reversing motor 22 and a first spring shaft 23, the reversing motor 22 is connected to the outer wall 111, the first spring shaft 23 is connected to the output end of the reversing motor 22, the self-locking plate 21 is connected to the end of the first spring shaft 23 away from the reversing motor 22, and the first spring shaft 23 can make the self-locking plate 21 automatically reset after passing through each two-way anti-falling block 12. In this way, the angle of the self-locking plate 21 can be adjusted by the reversing motor 22, for example, when switching from the upward anti-falling self-locking mode to the downward anti-falling self-locking mode, the reversing motor 22 is started to adjust the initial angle of the self-locking plate 21; in addition, under the action of the first spring shaft 23, the self-locking plate 21 can be continuously pushed away by the two-way anti-falling block 12, and then automatically reset, ensuring the realization of the automatic self-locking function.

[0063] like Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments, the anti-fall component 2 also includes a first electromagnet 24 and a descending anti-fall device 25, both of which are connected to the outer wall 111, the first electromagnet 24 can adsorb the self-locking plate 21 to prevent the self-locking plate 21 from rotating counterclockwise, the descending anti-fall device 25 is arranged below the self-locking plate 21, the descending anti-fall device 25 includes a mounting seat 251, a lifting assembly 252 and an anti-fall top plate 253, the mounting seat 251 is connected to the outer wall 111, the lifting assembly 252 is connected to the mounting seat 251, the anti-fall top plate 253 is connected to the movable end of the lifting assembly 252, the anti-fall top plate 253 can be moved relative to the mounting seat 251 in a direction close to the self-locking plate 21 through the lifting assembly 252 and press the self-locking plate 21, so as to prevent the self-locking plate 21 from rotating counterclockwise together with the first electromagnet 24.

[0064] In specific implementation, when the lifting platform 110 falls abnormally during the downward process, the first electromagnet 24 is first energized to generate suction force on the self-locking plate 21, increasing the resistance of the self-locking plate 21 to rotate counterclockwise, that is, increasing the resistance of the lifting platform 110 to fall abnormally, thereby achieving the effect of initially slowing down the lifting platform 110. Then, the descending anti-falling device 25 is started, so that the lifting assembly 252 drives the anti-falling top plate 253 to move upward until the anti-falling top plate 253 supports the self-locking plate 21, so that the self-locking plate 21 gradually cannot rotate counterclockwise, and finally the lifting platform 110 stops falling.

[0065] Through such an arrangement, in the downward anti-fall self-locking mode, the lifting platform 110 will sequentially undergo two stages of initial deceleration and gradual stop, rather than stopping immediately after an abnormal fall occurs, which is beneficial to reduce or avoid damage to the equipment.

[0066] like Figure 7As shown, in some embodiments, the first electromagnet 24 is connected to the outer wall 111 through a mounting block, and the mounting block can be located beside the commutation motor 22 and at the same height as the commutation motor 22, or located above the commutation motor 22, so that the first electromagnet 24 can adsorb the self-locking plate 21 from above, and the anti-fall top plate 253 can support the self-locking plate 21 from below, and the two cooperate to effectively prevent the self-locking plate 21 from rotating.

[0067] like Figure 6 As shown, in some embodiments, the descent anti-fall device 25 further includes a connecting plate 254, a second spring shaft 255, a first connecting shaft 256, a spring cylinder 257 and a third spring shaft 258, the connecting plate 254 is connected to the movable end of the jacking assembly 252, the anti-falling top plate 253 is connected to the connecting plate 254 through the second spring shaft 255, the spring cylinder 257 is connected to the connecting plate 254 through the third spring shaft 258, the end of the anti-falling top plate 253 away from the second spring shaft 255 and the end of the spring cylinder 257 away from the third spring shaft 258 are connected through the first connecting shaft 256, and the anti-falling top plate 253, the spring cylinder 257 and the connecting plate 254 are surrounded to form a triangular structure. The spring cylinder 257 itself is retractable, and one side of the triangular structure formed by the anti-falling top plate 253, the spring cylinder 257 and the connecting plate 254 is retractable, and the three corners are all rotating shaft structures.

[0068] During specific implementation, the second spring shaft 255 is first rotated clockwise to drive the anti-falling top plate 253 to compress the spring cylinder 257. When the spring cylinder 257 is compressed, it can accumulate elastic potential energy. The accumulated elastic potential energy can cause the spring cylinder 257 to generate an opposite force, that is, an elastic force in the counterclockwise direction, and finally the anti-falling top plate 253 is rotated counterclockwise to a position against the self-locking plate 21 to prevent the self-locking plate 21 from rotating.

[0069] With such an arrangement, since multiple springs work together to decelerate the lifting platform 110, a certain buffering effect can be produced, so that the lifting platform 110 will not stop immediately, which is beneficial to further avoid damage to the equipment.

[0070] It should be noted that: during the specific implementation, the lifting component 252 can first drive the anti-falling top plate 253 to move upward to a certain height, and then the above-mentioned triangular structure can be rotated, compressed and rebounded. Compared with directly using the lifting component 252 to raise the anti-falling top plate 253 to the position of supporting the self-locking plate 21, adding the above-mentioned triangular structure can reduce the impact between the structures and avoid damage to key components.

[0071] like Figure 8As shown, in some embodiments, the lifting assembly 252 includes a fixed seat 2521, a lifting rod 2522, a second electromagnet 2523, a permanent magnet piston 2524, a locking tooth 2525 and a locking groove 2526. The lifting rod 2522 is partially located inside the fixed seat 2521, the second electromagnet 2523 is arranged on the inner bottom wall of the fixed seat 2521, the permanent magnet piston 2524 is connected to the bottom end of the lifting rod 2522, the permanent magnet piston 2524 can generate a repulsive force with the second electromagnet 2523 to drive the lifting rod 2522 to extend upward relative to the fixed seat 2521, the locking tooth 2525 is connected to the lifting rod 2522, the number of the locking grooves 2526 is multiple, and the multiple locking grooves 2526 are linearly arranged on the inner side wall of the fixed seat 2521. When the lifting rod 2522 extends upward, the locking teeth 2525 are inserted into the locking grooves 2526 one by one from bottom to top.

[0072] In specific implementation, the second electromagnet 2523 is started to generate a magnetic force in the opposite direction to the permanent magnet piston 2524, so that a repulsive force is generated between the permanent magnet piston 2524 and the second electromagnet 2523. The permanent magnet piston 2524 rises under the action of the repulsive force and pushes the lifting rod 2522 to rise synchronously. During the process of the lifting rod 2522 rising, the locking tooth 2525 can be inserted into a locking groove 2526 to fix the position of the lifting rod 2522.

[0073] With such a setting, lifting can be achieved by simply starting the second electromagnet 2523, which is easy to operate. The repulsive force between the second electromagnet 2523 and the permanent magnet piston 2524 provides a continuous and stable lifting power, so that the lifting rod 2522 can be extended upward quickly and smoothly. The cooperation of the locking tooth 2525 and the locking groove 2526 ensures that the lifting rod 2522 can be reliably locked in position at the desired height during the ascent.

[0074] like Figure 1 and Figure 2 As shown, in some embodiments, the lifting mechanism 100 also includes a guide rod 120, a traction rope 130 and a connecting slider 140, the guide rod 120 extends in a vertical direction, the connecting slider 140 is slidably connected to the guide rod 120, the lifting platform 110 is connected to the connecting slider 140, the traction rope 130 is arranged on the lifting platform 110, and the traction rope 130 is used to drive the lifting platform 110 to lift and lower.

[0075] For example, a winch may be arranged at the highest point of the building, the traction rope 130 is connected to the winch, and the lifting platform 110 is lifted and lowered by the winch by retracting and releasing the traction rope 130. The guide rod 120 may be fixed to the ground.

[0076] Through the combined design of the guide rod 120, the traction rope 130 and the connecting slider 140, a stable and efficient lifting drive solution is provided for the lifting platform 110, so that the lifting platform 110 can be vertically lifted along the guide rod 120, effectively avoiding left and right shaking or deviation of the lifting platform 110.

[0077] Furthermore, if Figure 1 and Figure 2 As shown, in some embodiments, the lifting mechanism 100 further includes a counterweight block 150 , and the counterweight block 150 and the lifting platform 110 are respectively connected to opposite ends of the connecting slider 140 , and a traction rope 130 is provided on both the counterweight block 150 and the lifting platform 110 .

[0078] By providing the counterweight 150 , the overall gravity can be balanced, and the traction rope 130 is provided on both the counterweight 150 and the lifting platform 110 , so that the traction force can be balanced, which is conducive to making the lifting process of the lifting platform 110 more stable.

[0079] Correspondingly, this embodiment also provides a method for using a lifting device, comprising the following steps:

[0080] S1, start the upward anti-falling self-locking mode of the two-way self-locking mechanism 200, so that the self-locking plate 21 and the part of the bearing rod 11 located below the self-locking plate 21 are arranged at an obtuse angle;

[0081] S2, after starting the upward anti-fall self-locking mode, start the lifting platform 110 to make the lifting platform 110 rise in the vertical direction;

[0082] S3, when the lifting platform 110 rises to a predetermined height, the lifting platform 110 is paused, and the operation is performed at the predetermined height;

[0083] S4. After the operation at the predetermined height is completed, the two-way self-locking mechanism 200 is switched from the upward anti-falling self-locking mode to the downward anti-falling self-locking mode, so that the self-locking plate 21 and the part of the load-bearing rod 11 located below the self-locking plate 21 are set at an acute angle, and the lifting platform 110 is started again to make the lifting platform 110 descend in the vertical direction.

[0084] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lifting device, characterized in that: The invention comprises a lifting mechanism (100) and a bidirectional self-locking mechanism (200), wherein the lifting mechanism (100) comprises a lifting platform (110) capable of being lifted and lowered in a vertical direction, and the bidirectional self-locking mechanism (200) comprises: An anti-fall self-locking rod (1) comprises a bearing rod (11) and a plurality of bidirectional anti-fall blocks (12), wherein the bearing rod (11) extends in a vertical direction, and the plurality of bidirectional anti-fall blocks (12) are protruded at intervals on the outer peripheral surface of the bearing rod (11); An anti-fall component (2) is arranged on an outer wall (111) of the lifting platform (110) facing the anti-fall self-locking rod (1), the anti-fall component (2) comprising a self-locking plate (21) rotatably connected to the outer wall (111), when the lifting platform (110) is lifted or lowered, the self-locking plate (21) can contact the two-way anti-fall block (12) without hindering the lifting or lowering of the lifting platform (110), when the lifting platform (110) falls abnormally, the self-locking plate (21) can stop at any one of the two-way anti-fall blocks (12) to prevent the lifting platform (110) from falling abnormally; The bidirectional self-locking mechanism (200) has an upward anti-falling self-locking mode and a downward anti-falling self-locking mode; When the lifting platform (110) moves upward, the bidirectional self-locking mechanism (200) is in the upward anti-falling self-locking mode, the self-locking plate (21) and the portion of the bearing rod (11) located below the self-locking plate (21) are arranged at an obtuse angle, and the self-locking plate (21) can be pushed away by each bidirectional anti-falling block (12) as the lifting platform (110) moves upward, and automatically resets after passing each bidirectional anti-falling block (12); an upward self-locking groove (13) is provided on the top of each bidirectional anti-falling block (12), and when the lifting platform (110) falls abnormally, the self-locking plate (21) can be inserted into the upward self-locking groove (13) to prevent the lifting platform (110) from continuing to fall; When the lifting platform (110) descends, the bidirectional self-locking mechanism (200) is in the descending anti-falling self-locking mode, and the self-locking plate (21) and the portion of the bearing rod (11) located below the self-locking plate (21) are arranged at an acute angle. The self-locking plate (21) can be pushed away by each bidirectional anti-falling block (12) as the lifting platform (110) descends, and automatically resets after passing each bidirectional anti-falling block (12). When the lifting platform (110) falls abnormally, the self-locking plate (21) can automatically stop at the bidirectional anti-falling block (12) to prevent the lifting platform (110) from continuing to fall.

2. The lifting device according to claim 1, characterized in that: The anti-falling assembly (2) further comprises a reversing motor (22) and a first spring shaft (23); the reversing motor (22) is connected to the outer wall (111); the first spring shaft (23) is connected to an output end of the reversing motor (22); the self-locking plate (21) is connected to an end of the first spring shaft (23) away from the reversing motor (22); the first spring shaft (23) can cause the self-locking plate (21) to automatically reset after passing through each of the bidirectional anti-falling blocks (12).

3. The lifting device according to claim 1, characterized in that: The anti-fall assembly (2) further comprises a first electromagnet (24) and a descending anti-fall device (25), wherein the first electromagnet (24) and the descending anti-fall device (25) are both connected to the outer wall (111), the first electromagnet (24) is capable of adsorbing the self-locking plate (21) to prevent the self-locking plate (21) from rotating, the descending anti-fall device (25) is arranged below the self-locking plate (21), and the descending anti-fall device (25) comprises a mounting seat (251), a lifting assembly (252) and an anti-falling top plate (253), The mounting seat (251) is connected to the outer wall (111), the lifting assembly (252) is connected to the mounting seat (251), and the anti-falling top plate (253) is connected to the movable end of the lifting assembly (252). The anti-falling top plate (253) can be moved relative to the mounting seat (251) in a direction close to the self-locking plate (21) and press against the self-locking plate (21) through the lifting assembly (252), so as to prevent the self-locking plate (21) from rotating together with the first electromagnet (24).

4. The lifting device according to claim 3, characterized in that: The lifting assembly (252) comprises a fixed seat (2521), a lifting rod (2522), a second electromagnet (2523), a permanent magnet piston (2524), a locking tooth (2525) and a locking groove (2526); the lifting rod (2522) is partially located inside the fixed seat (2521); the second electromagnet (2523) is arranged on the inner bottom wall of the fixed seat (2521); the permanent magnet piston (2524) is connected to the bottom end of the lifting rod (2522); and the permanent magnet piston (2524) is capable of A repulsive force is generated between the second electromagnet (2523) and the lifting rod (2522) so as to drive the lifting rod (2522) to extend upward relative to the fixing seat (2521); the locking tooth (2525) is connected to the lifting rod (2522); there are a plurality of locking grooves (2526), ​​and the plurality of locking grooves (2526) are linearly arranged on the inner side wall of the fixing seat (2521); when the lifting rod (2522) extends upward, the locking teeth (2525) are inserted into the locking grooves (2526) one by one from bottom to top.

5. The lifting device according to claim 3, characterized in that: The descent arrester (25) further comprises a connecting plate (254), a second spring shaft (255), a first connecting shaft (256), a spring cylinder (257) and a third spring shaft (258); the connecting plate (254) is connected to the movable end of the lifting assembly (252); the anti-falling top plate (253) is connected to the connecting plate (254) via the second spring shaft (255); the spring cylinder (257) is connected to the connecting plate (254) via the third spring shaft (258); an end of the anti-falling top plate (253) away from the second spring shaft (255) and an end of the spring cylinder (257) away from the third spring shaft (258) are connected via the first connecting shaft (256); the anti-falling top plate (253), the spring cylinder (257) and the connecting plate (254) are arranged to form a triangular structure.

6. The lifting device according to any one of claims 1 to 5, characterized in that: The lifting mechanism (100) further comprises a guide rod (120), a traction rope (130) and a connecting slider (140); the guide rod (120) extends in a vertical direction; the connecting slider (140) is slidably connected to the guide rod (120); the lifting platform (110) is connected to the connecting slider (140); the traction rope (130) is arranged on the lifting platform (110); and the traction rope (130) is used to drive the lifting platform (110) to lift or lower.

7. The lifting device according to claim 6, characterized in that: The lifting mechanism (100) further comprises a counterweight block (150), wherein the counterweight block (150) and the lifting platform (110) are respectively connected to opposite ends of the connecting slider (140), and the traction rope (130) is provided on both the counterweight block (150) and the lifting platform (110).

8. The lifting device according to any one of claims 1 to 5, characterized in that: The anti-falling components (2) are arranged in two groups, and the two groups of anti-falling components (2) are respectively located on two opposite sides of the anti-falling self-locking rod (1).

9. A method for using a lifting device, characterized in that: A lifting device for use in any one of claims 1 to 5, wherein the method for using the lifting device comprises: Activating the upward anti-falling self-locking mode of the bidirectional self-locking mechanism (200) so that the self-locking plate (21) and the portion of the bearing rod (11) located below the self-locking plate (21) are arranged at an obtuse angle; After the upward anti-falling self-locking mode is activated, the lifting platform (110) is activated to make the lifting platform (110) rise in the vertical direction; When the lifting platform (110) rises to a predetermined height, the lifting platform (110) is paused, and operations are performed at the predetermined height; After the operation at the predetermined height is completed, the bidirectional self-locking mechanism (200) is switched from the upward anti-falling self-locking mode to the downward anti-falling self-locking mode, so that the self-locking plate (21) and the portion of the bearing rod (11) below the self-locking plate (21) are arranged at an acute angle, and the lifting platform (110) is started again to make the lifting platform (110) descend in the vertical direction.

Images