Anti-falling device and lifting device

Abstract

The anti-falling device comprises at least one anti-falling assembly and an anti-falling frame, the anti-falling assemblies are arranged in pairs and evenly distributed on the upper surface of a bearing platform, the anti-falling assemblies are fixed to the top of the bearing platform and horizontally arranged, and the directions of anti-falling blocks in the anti-falling assemblies located on the same horizontal axis are opposite to each other. The anti-falling frames are arranged in the movement direction of the bearing platform and located on the two sides of the bearing platform correspondingly, the anti-falling frames correspond to the anti-falling assemblies one to one, and the anti-falling blocks in each anti-falling assembly face the corresponding anti-falling frame; according to the lifting device, through cooperation of the anti-falling frames and the anti-falling assemblies, the bearing platform is prevented from falling due to equipment failures, the anti-falling blocks in the anti-falling assemblies all face the corresponding anti-falling frames, quick response can be achieved when the equipment failures occur, automatic locking is achieved, and the safety of the lifting device is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical transportation field, concretely relates to a kind of anti-falling device and hoisting device. BACKGROUND

[0002] In the industrial production field, especially the link involving material handling and lifting, the safe transportation of the tank is crucial. For example, in the production of neodymium iron boron powder, the tank needs to be vertically transported by lifting equipment when transferring between different processes. However, the existing lifting equipment has many problems in safety protection.

[0003] Traditional lifting equipment lacks effective anti-falling measures. When the equipment suddenly fails, such as a drive motor malfunction or a transmission component breaking, the tank is likely to fall without support. This not only causes material leakage, waste of resources and environmental pollution, but also may cause a chemical reaction for special materials such as neodymium iron boron powder, posing a safety hazard. Moreover, the falling tank may damage the equipment below, causing production to stop and high maintenance costs.

[0004] Some lifting equipment has a simple anti-falling device, but the structure design is often unreasonable. In an emergency, it cannot respond quickly and effectively prevent the tank from falling. For example, some anti-falling blocks cannot be automatically locked and need to be manually operated, which is not possible in the event of a sudden failure, making the anti-falling function useless.

[0005] With the increasing automation of industry, the demand for production efficiency and safety is also growing. The existing anti-falling technology of lifting equipment cannot meet these requirements. Therefore, it is urgent to develop an anti-falling assembly that can quickly respond to equipment failure by the cooperation of anti-falling frames and anti-falling components, and automatically lock the anti-falling blocks. This has important significance for ensuring production safety and improving production efficiency. INVENTION CONTENTS

[0006] The utility model aims to provide an anti-falling device and a lifting device. Through the cooperation of anti-falling frames and anti-falling assemblies, the falling of the bearing platform due to equipment failure is avoided, and the anti-falling blocks in the anti-falling assemblies are all directed towards the corresponding anti-falling frames, which can quickly respond to equipment failure to automatically lock, greatly enhancing the safety of the lifting device.

[0007] The utility model realizes the following technical solutions:

[0008] An anti-falling device includes:

[0009] Anti-falling assemblies are arranged in pairs at least one group and are evenly distributed on the upper surface of the bearing platform. The anti-falling assemblies are fixed to the top of the bearing platform and arranged horizontally. The anti-falling blocks in the anti-falling assemblies on the same horizontal axis are directed away from each other.

[0010] A fall arrest frame is arranged along the movement direction of the bearing platform and is located on both sides of the bearing platform respectively, and the fall arrest frame corresponds to the fall arrest assembly one by one, wherein the fall arrest block in each fall arrest assembly faces the corresponding fall arrest frame.

[0011] In this scheme, the fall arrest assemblies are arranged on the upper surface of the bearing platform, can protect the bearing platform from multiple directions, and can effectively prevent falling in different situations. The fall arrest blocks face away from each other and can fully cover the falling risk area of the bearing platform. The fall arrest frame is arranged on both sides along the movement direction of the bearing platform and corresponds to the fall arrest assembly one by one, so that the fall arrest block can accurately face the corresponding fall arrest frame. When the bearing platform falls due to equipment failure, the fall arrest block can quickly cooperate with the fall arrest frame to prevent the bearing platform from falling, greatly enhancing the safety of the lifting device during operation and effectively avoiding material loss caused by the falling of the bearing platform.

[0012] As an optimized scheme of the fall arrest device, the fall arrest assembly further comprises a driving cylinder, a rotating shaft and a mounting block.

[0013] The mounting block is connected to the top of the bearing platform, the driving cylinder is connected to the top of the mounting block, one end of the fall arrest block is connected to the output end of the driving cylinder, the middle part of the fall arrest block rotates around the rotating shaft, and the other end of the fall arrest block faces the corresponding fall arrest frame.

[0014] In this scheme, the mounting block is provided to provide a stable support foundation for the driving cylinder, so that it can be stably installed on the top of the bearing platform. The driving cylinder serves as a power source, and its output end is connected to one end of the fall arrest block. When an emergency such as equipment failure occurs, the driving cylinder can respond in time and drive the fall arrest block to move. The design that the middle part of the fall arrest block rotates around the rotating shaft provides a reasonable movement mode for the fall arrest block, so that it can flexibly face the corresponding fall arrest frame. This structure enables the fall arrest block to quickly and accurately cooperate with the fall arrest frame under the drive of the driving cylinder, thereby effectively preventing the bearing platform from falling and further enhancing the safety and effectiveness of the entire fall arrest device.

[0015] As an optimized scheme of the fall arrest device, the fall arrest assembly further comprises a sensor for monitoring the movement state of the bearing platform, and the sensor is electrically connected to the driving cylinder.

[0016] In the scheme, when the sensor detects abnormal movement of the bearing platform, it can immediately transmit a signal to the driving cylinder. After receiving the signal, the driving cylinder responds quickly and drives the anti-falling block to act, so that it cooperates with the anti-falling frame to prevent the bearing platform from falling in time, realizing the automatic triggering of the anti-falling function, avoiding the delay and uncertainty of manual intervention, greatly improving the response speed and reliability of the anti-falling device, and being able to respond effectively to potential falling hazards in a shorter time.

[0017] As an optimized scheme of the anti-falling device, the anti-falling frame comprises anti-falling rods and anti-falling pieces, the anti-falling rods are oppositely arranged, and the anti-falling pieces are connected between the anti-falling rods and arranged at intervals along the anti-falling rods.

[0018] In the scheme, the oppositely arranged anti-falling rods provide a stable frame structure for the entire anti-falling frame, ensuring that it can be firmly installed in the corresponding position and providing reliable support for the anti-falling pieces. The anti-falling pieces are connected between the anti-falling rods and arranged at intervals, increasing the possibility and flexibility of cooperation with the anti-falling block. When the bearing platform is at risk of falling, the anti-falling block can more easily and quickly contact and cooperate with the anti-falling pieces in different positions, effectively improving the response speed and braking effect of the anti-falling device in emergency situations, ensuring that the bearing platform can be prevented from falling in time.

[0019] A lifting device comprising the anti-falling device in the above scheme and a frame body, wherein the frame body is provided with a transportation space in the middle for accommodating the anti-falling device and a bearing platform, the anti-falling frame in the anti-falling device is connected to the side wall surface of the transportation space, and lifting units are evenly distributed around the transportation space, the lower end of the bearing platform is connected to the lifting units, and the bearing platform moves reciprocally along the longitudinal direction in the transportation space through the lifting units.

[0020] In the scheme, the transportation space in the middle of the frame body provides a running space for the anti-falling device and the bearing platform, enabling orderly cooperation of various components. The anti-falling frame is connected to the side wall surface of the transportation space, ensuring that the anti-falling device can function stably during lifting. When the bearing platform is at risk of falling, the anti-falling assembly can cooperate with the anti-falling frame in time to prevent accidents. The lifting units evenly distributed around the transportation space provide power for the bearing platform, enabling it to move reciprocally along the longitudinal direction in the transportation space, realizing the lifting and lowering operation of materials such as tanks. This layout design not only improves the stability and safety of the lifting device, but also ensures that it can efficiently and smoothly complete the vertical transportation task of materials, meeting the actual needs of lifting operations in industrial production.

[0021] As an optimized scheme of the lifting device, the lifting unit comprises multiple groups of guide assemblies and at least one group of driving assemblies.

[0022] A plurality of groups of the guiding assemblies are evenly distributed around the transportation space and connected to the lower end of the bearing platform.

[0023] The driving assembly is connected to the lower end of the bearing platform, and the bearing platform reciprocates along the guiding assembly through the driving assembly.

[0024] In this scheme, a plurality of groups of guiding assemblies are evenly distributed around the transportation space and connected to the lower end of the bearing platform, like a track, which can effectively limit the movement trajectory of the bearing platform, keep it stable during lifting, avoid shaking and deviation, and ensure the accuracy of lifting operation. The driving assembly, as a power source, is connected to the lower end of the bearing platform to provide power support for the reciprocating movement of the bearing platform.

[0025] As an optimization scheme of the lifting device, the guiding assembly comprises a guiding piece and a guiding plate.

[0026] One end of the guiding plate is connected to the wall surface of the transportation space, and the other end of the guiding plate is provided with a convex part with a H-shaped cross section. One end of the guiding piece is provided with a groove matched with the convex part, and the other end of the guiding piece is connected to the lower end of the bearing platform.

[0027] In this scheme, the guiding plate is connected to the wall surface of the transportation space, and the H-shaped convex part closely matches the groove of the guiding piece, providing accurate guiding for the lifting movement of the bearing platform. This structure can effectively constrain the bearing platform, so that it can only move along the specified path of the guiding plate, reducing the shaking and deviation of the bearing platform during lifting, and ensuring that the bearing platform can smoothly and accurately move longitudinally in the transportation space.

[0028] As an optimization scheme of the lifting device, the driving assembly comprises a motor and a rack.

[0029] One end of the rack is connected to the wall surface of the transportation space, and the other end of the rack is provided with a straight tooth. The motor is connected to the lower end of the bearing platform, and the output end of the motor is connected with a gear engaged with the rack.

[0030] In this scheme, the motor, as a power source, is installed at the lower end of the bearing platform. When the motor starts, the gear at the output end will engage with the rack connected to the wall surface of the transportation space. The rotation of the motor drives the gear to rotate. Due to the engagement relationship between the gear and the rack, the bearing platform will reciprocate in a specific direction under the constraint of the rack.

[0031] As the optimization scheme of the lifting device, the lifting device further comprises a pair of counterweight units arranged on both sides of the frame body and connected with the bearing platform through guide wheels arranged on the frame body, and the movement direction of the counterweight units is opposite to the movement direction of the bearing platform.

[0032] The counterweight unit comprises a limiting plate and a counterweight, one end of the limiting plate is connected to the side end of the frame body, the other end of the limiting plate is provided with a protruding part with a H-shaped cross section in radial direction, and the counterweight is provided with a groove matched with the protruding part, and when the bearing platform moves in the longitudinal direction, the counterweight moves along the limiting plate.

[0033] In the scheme, the pair of counterweight units are arranged on both sides of the frame body, connected with the bearing platform through the guide wheels and move in opposite directions, the gravity of the counterweight and the weight of the bearing platform are balanced with each other, the load of the driving assembly is effectively reduced, and the energy consumption is reduced. The cooperation of the limiting plate and the counterweight provides a precise movement track for the counterweight, the H-shaped protruding part of the limiting plate is matched with the groove of the counterweight, and the stable movement of the counterweight along the limiting plate is ensured, and the shaking or deviation of the counterweight during the movement is prevented.

[0034] As the optimization scheme of the lifting device, the counterweight unit further comprises a first directional wheel set and a second directional wheel set, the first directional wheel set and the second directional wheel set are arranged in the groove of the counterweight in a spaced manner, and the rotation shaft directions of the first directional wheel set and the second directional wheel set are arranged in a perpendicular manner.

[0035] In the scheme, the first directional wheel set and the second directional wheel set arranged in a perpendicular manner are arranged, and the overall performance of the lifting device is improved. The two directional wheel sets are arranged in the groove of the counterweight in a spaced manner, and the perpendicular rotation shaft directions of the two directional wheel sets enable the counterweight unit to be effectively supported and guided in two perpendicular directions during the movement.

[0036] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0037] 1.The anti-falling assembly and the anti-falling frame are matched, and the anti-falling device can quickly respond when the equipment fails, and the anti-falling block is automatically locked and matched with the anti-falling frame when the carrying platform has a falling risk, so as to avoid the falling of the carrying platform, prevent material leakage, equipment damage and environmental pollution, and ensure personnel safety.

[0038] 2.The multiple sets of guide assemblies and drive assemblies of the lifting unit in the utility model work cooperatively, the guide of the guide assembly is closely matched with the guide plate, a stable movement track is provided for the carrying platform, shaking and deviation are reduced, the carrying platform can accurately reciprocate longitudinally in the transportation space, and meanwhile, the setting of the counterweight unit balances the weight of the carrying platform, the limiting plate in the counterweight unit and the orthogonally arranged directional wheel group ensure stable movement of the counterweight, the stability of lifting of the carrying platform is further improved, and the safety of material transportation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0039] The drawings described herein are used to provide further understanding of the embodiments of the utility model, constitute a part of the present application, and do not constitute a limitation on the embodiments of the utility model. In the drawings:

[0040] Figure 1 It is a structural schematic view of the anti-falling device and the lifting device in the installed state;

[0041] Figure 2 It is another view of the structural schematic view of the anti-falling device and the lifting device in the installed state;

[0042] Figure 3 It is a structural schematic view of the lifting device from the bottom;

[0043] Figure 4 It is a structural schematic view of the lifting device from the top;

[0044] Figure 5 It is a structural schematic view of the anti-falling assembly; Figure 1 It is a structural schematic view of the mark A;

[0045] Figure 6 It is a structural schematic view of the anti-falling assembly;

[0046] Figure 7 It is a structural schematic view of the drive mechanism of the lifting device;

[0047] Figure 8 It is a structural schematic view of the mark B; Figure 7 It is a structural schematic view of the counterweight unit;

[0048] Figure 9 It is a structural schematic view of the counterweight unit;

[0049] Figure 10 It is a structural schematic view of the counterweight structure.

[0050] The marks in the drawings and the corresponding names of parts are as follows:

[0051] 1-upper frame body, 2-lower frame body, 3-carrying platform, 4-driving assembly, 41-gear, 42-motor, 43-rack, 5-guiding assembly, 51-guiding piece, 52-guiding plate, 6-counterweight unit, 61-limiting plate, 62-guiding rope, 63-fixing ring, 64-counterweight, 65-first directional wheel set, 66-second directional wheel set, 67-connecting plate, 7-guiding wheel, 8-buffering assembly, 9-wiring box, 10-fall-preventing assembly, 101-fall-preventing block, 102-driving cylinder, 103-rotation shaft, 104-mounting block, 11-fall-preventing frame, 111-fall-preventing rod, 112-fall-preventing piece. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further explained in detail by combining with the embodiment and the drawings, the schematic embodiment and the explanation of the utility model are only used for explaining the utility model, and do not be regarded as the limitation of the utility model.

[0053] Embodiment 1

[0054] This embodiment 1 provides a kind of fall-preventing device, as shown in Fig. Figures 1-6 Including fall-preventing assembly 10 and fall-preventing frame 11, fall-preventing assembly 10 is at least one group and is distributed on the upper surface of carrying platform 3, fall-preventing assembly 10 is fixed on the top of carrying platform 3 and is horizontally arranged, the direction of the fall-preventing block 101 in the fall-preventing assembly 10 on the same horizontal axis is mutually opposite, fall-preventing frame 11 is set along the movement direction of carrying platform 3 and is located at the two sides of carrying platform 3 respectively, fall-preventing frame 11 is one-to-one corresponding with fall-preventing assembly 10 respectively, the fall-preventing block 101 in each fall-preventing assembly 10 is all towards corresponding fall-preventing frame 11, when carrying platform 3 appears falling risk, fall-preventing block 101 is automatically locked and cooperates with fall-preventing frame 11, avoids carrying platform 3 falling.

[0055] Wherein, please refer to Figures 4-6As shown, the anti-falling assembly 10 is arranged in pairs and uniformly distributed on the upper surface of the bearing platform, in a horizontal arrangement state, and the anti-falling blocks 101 in the same horizontal axis of the anti-falling assembly 10 face away from each other, which can protect the bearing platform 3 from falling in all directions. Specifically, each anti-falling assembly 10 further comprises a driving cylinder 102, a rotating shaft 103 and a mounting block 104. The mounting block 104 is connected to the top of the bearing platform 3, providing a stable mounting base for the entire anti-falling assembly 10. The driving cylinder 102 is installed on the top of the mounting block 104 as a power output component, with its output end connected to one end of the anti-falling block 101. The middle part of the anti-falling block 101 rotates around the rotating shaft 103, allowing the anti-falling block 101 to rotate flexibly under the drive of the driving cylinder 102, and the other end of the anti-falling block 101 faces the corresponding anti-falling frame 11. In addition, the anti-falling assembly 10 is also equipped with a sensor for monitoring the motion state of the bearing platform 3. The sensor is electrically connected to the driving cylinder 102 and can sense the motion of the bearing platform 3 in real time. Once an abnormal motion such as sudden falling tendency is detected, the sensor will quickly transmit a signal to the driving cylinder 102, triggering the driving cylinder 102 to act, and then driving the anti-falling block 101 to respond, so that the anti-falling block 101 and the anti-falling frame 11 are automatically locked and matched, preventing the bearing platform 3 from falling.

[0056] As shown in Figure 1 , Figure 2 and Figure 5 , the anti-falling frame 11 is arranged along the movement direction of the bearing platform 3 and located on both sides of the bearing platform 3, and corresponds to the anti-falling assembly 10 one by one, ensuring that the anti-falling block 101 in each anti-falling assembly 10 can accurately face the corresponding anti-falling frame 11. Specifically, the anti-falling frame 11 comprises anti-falling rods 111 and anti-falling pieces 112. The anti-falling rods 111 are arranged oppositely to provide a support structure for the anti-falling pieces 112. The anti-falling pieces 112 are connected between the anti-falling rods 111 and are spaced along the anti-falling rods 111. Under normal circumstances, the anti-falling block 101 maintains a certain distance from the anti-falling frame 11. When the bearing platform 3 is in danger of falling, the driving cylinder 102 drives the anti-falling block 101 to rotate, so that it quickly cooperates with the anti-falling pieces 112 on the corresponding anti-falling frame 11, thereby preventing the bearing platform 3 from continuing to fall and playing a key role in preventing falling.

[0057] Example 2

[0058] This embodiment 2 provides a lifting device, as shown in Figures 1-6 , comprising the anti-falling device in embodiment 1 and a frame body.

[0059] As shown in Figure 1As shown, the frame body includes an upper frame body 1 and a lower frame body 2, which are vertically connected in series by fasteners. In actual use, the height of the lifting device can be adjusted by increasing or decreasing the upper frame body 1. Meanwhile, the middle part of the upper frame body 1 and the lower frame body 2 is through, which is a transportation space for accommodating the anti-falling device and the carrying platform 3. The anti-falling frame 11 in the anti-falling device is connected to the side wall surface of the transportation space, and lifting units are evenly distributed around the transportation space. The lower end of the carrying platform 3 is connected to the lifting units, and the carrying platform 3 reciprocates in the transportation space along the longitudinal direction through the lifting units.

[0060] As shown in Figures 1-3 As shown above, the lifting unit includes four groups of guide assemblies 5 and one group of driving assemblies 4 according to actual needs. All guide assemblies 5 are evenly distributed around the transportation space and connected to the lower end of the carrying platform 3. The guide assemblies 5 provide stable guiding effect from multiple directions to limit the freedom of the carrying platform 3. The driving assembly 4 is connected to the lower end of the carrying platform 3, and the carrying platform 3 reciprocates along the guide assembly 5 through the driving assembly 4. Specifically, as shown in Figure 7 and Figure 8 As shown, the guide assembly 5 includes a guide piece 51 and a guide plate 52, and the driving assembly 4 includes a motor 42 and a rack 43. One end of the guide plate 52 is connected to the wall surface of the transportation space, and the other end of the guide plate 52 is provided with a protrusion with a radial cross-section in the shape of an I-beam. One end of the guide piece 51 is provided with a groove matching the protrusion. The I-beam-shaped protrusion and the groove of the guide piece 51 tightly match to form a stable and precise guiding structure. The other end of the guide piece 51 is connected to the lower end of the carrying platform 3. Meanwhile, one end of the rack 43 is connected to the wall surface of the transportation space and located beside one of the guide plates 52. The other end of the rack 43 is provided with a straight tooth. The motor 42 is connected to the lower end of the carrying platform 3, and the output end of the motor 42 is connected with a gear 41 meshing with the rack 43. In use, the motor 42 efficiently converts rotary motion into linear reciprocating motion of the carrying platform 3, and in combination with the guide assembly 5, it provides stable guiding effect, ultimately achieving improved motion precision and stability of the material tank.

[0061] Embodiment 3

[0062] This embodiment 3 provides another lifting device based on embodiment 2, as shown in Figures 2-3 As shown, a plurality of buffer assemblies 8 are arranged at the bottom of the transportation space, with their upper ends facing the lower end of the carrying platform 3. Specifically, the buffer assembly 8 is a spring damper, and all buffer assemblies 8 are fixed to the bottom of the transportation space by expansion screws. Multiple evenly distributed buffer assemblies 8 can effectively disperse impact force, avoiding poor buffering effect or damage to device components due to excessive local stress.

[0063] At the same time, in order to avoid the cable from being tangled, pulled and other chaotic situations during the operation of the lifting device, as shown in Figure 2 The lifting device also includes a cable storage box 9, which is connected to the wall of the transportation space, and the inside of the cable storage box 9 is provided with a cavity for accommodating the lifting device cable, so that the cable can be orderly received therein, and at the same time, the neat wiring also facilitates the maintenance and repair of the cable. When electrical problems occur, the fault point can be quickly located and handled, reducing the downtime of the equipment caused by cable problems, thereby ensuring the continuous and stable operation of the lifting device and improving the production efficiency.

[0064] Embodiment 4

[0065] This embodiment 4 provides another lifting device based on embodiment 2 or embodiment 3, as shown in Figures 1-10 The lifting device also includes a pair of counterweight units 6, which are located on both sides of the frame and are connected to the load platform 3 through the guide wheels 7 provided on the frame, and the movement direction of the counterweight unit 6 is opposite to that of the load platform 3. When the load platform 3 rises or falls, the counterweight unit 6 can automatically adjust its position according to its movement state to prevent safety hazards caused by unstable center of gravity.

[0066] Specifically, please refer to Figures 9-10 The counterweight unit 6 includes a limiting plate 61 and a counterweight 64, one end of the limiting plate 61 is connected to the side end of the frame, the other end of the limiting plate 61 is provided with a protruding part with a radial cross-section in the shape of an I-beam, the counterweight 64 is provided with a groove matched with the protruding part, and the counterweight 64 and the load platform 3 are respectively connected with a fixed ring 63. The guide rope 62 is connected with the fixed rings 63 at both ends through the guide wheels 7. When the load platform 3 moves longitudinally, the counterweight 64 moves along the limiting plate 61.

[0067] At the same time, in order to prevent the counterweight 64 from rotating or deviating unnecessarily during movement, the counterweight unit 6 also includes a first directional wheel set 65 and a second directional wheel set 66. The first directional wheel set 65 and the second directional wheel set 66 each include a pair of directional wheels, and the first directional wheel set 65 and the second directional wheel set 66 are spaced apart in the groove of the counterweight 64 through a connecting plate 67. At the same time, the rotation shaft directions of the first directional wheel set 65 and the second directional wheel set 66 are orthogonally arranged to effectively limit the degrees of freedom of the counterweight 64, prevent unnecessary rotation or deviation during movement, and make the movement trajectory of the counterweight 64 more stable.

[0068] The above specific embodiments explain the purpose, technical scheme and beneficial effects of the present application in further detail, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fall arrest device, characterized in that, The application relates to a fall-preventing device and a frame body. The fall-preventing device comprises a fall-preventing assembly (10) arranged in pairs and uniformly distributed on the upper surface of a bearing platform (3), wherein the fall-preventing assembly (10) is fixed on the top of the bearing platform (3) and arranged horizontally, and the fall-preventing blocks (101) in the fall-preventing assemblies (10) on the same horizontal axis are arranged in opposite directions. The fall-preventing frame (11) is arranged along the movement direction of the bearing platform (3) and located on both sides of the bearing platform (3) respectively, and the fall-preventing frame (11) corresponds to the fall-preventing assembly (10) one by one, wherein the fall-preventing block (101) in each fall-preventing assembly (10) faces the corresponding fall-preventing frame (11).

2. A fall arrest device according to claim 1, wherein, The fall-preventing assembly (10) further comprises a driving cylinder (102), a rotating shaft (103) and a mounting block (104). The mounting block (104) is connected to the top of the bearing platform (3), the driving cylinder (102) is connected to the top of the mounting block (104), one end of the fall-preventing block (101) is connected to the output end of the driving cylinder (102), the middle part of the fall-preventing block (101) rotates around the rotating shaft (103), and the other end of the fall-preventing block (101) faces the corresponding fall-preventing frame (11).

3. A fall arrest device according to claim 2, wherein, The fall-preventing assembly (10) further comprises a sensor for monitoring the movement state of the bearing platform (3), and the sensor is electrically connected to the driving cylinder (102).

4. The fall arrest device of claim 1, wherein, The fall-preventing frame (11) comprises fall-preventing rods (111) and a fall-preventing piece (112), the fall-preventing rods (111) are oppositely arranged, and the fall-preventing piece (112) is connected between the fall-preventing rods (111) and arranged along the fall-preventing rods (111).

5. A hoisting device characterized by The application further discloses a fall-preventing device and a frame body, and the frame body is characterized in that a transport space for accommodating the fall-preventing device and the bearing platform (3) is arranged in the middle of the frame body, the fall-preventing frame (11) in the fall-preventing device is connected to the side wall surface of the transport space, lifting units are uniformly arranged around the transport space, the lower end of the bearing platform (3) is connected to the lifting units, and the bearing platform (3) reciprocally moves in the transport space along the longitudinal direction through the lifting units.

6. A lifting device according to claim 5, characterised in that The lifting unit comprises a plurality of guide assemblies (5) and at least one driving assembly (4). The plurality of guide assemblies (5) are uniformly arranged around the transport space and connected to the lower end of the bearing platform (3). The driving assembly (4) is connected to the lower end of the bearing platform (3), and the bearing platform (3) reciprocally moves along the guide assembly (5) through the driving assembly (4).

7. A lifting device according to claim 6, characterised in that The guide assembly (5) comprises a guide piece (51) and a guide plate (52). One end of the guide plate (52) is connected to the wall surface of the transport space, the other end of the guide plate (52) is provided with a convex part with a H-shaped radial cross section, one end of the guide piece (51) is provided with a groove matched with the convex part, and the other end of the guide piece (51) is connected to the lower end of the bearing platform (3).

8. A lifting device according to claim 6, characterised in that The driving assembly (4) comprises a motor (42) and a rack (43); One end of the rack (43) is connected to the wall of the transport space, the other end of the rack (43) is provided with a straight tooth, the motor (42) is connected to the lower end of the bearing platform (3), and the output end of the motor (42) is connected with a gear (41) engaged with the rack (43).

9. A lifting device according to claim 5, wherein, The lifting device further comprises a pair of counterweight units (6) arranged on both sides of the frame body, which are connected with the bearing platform (3) through guide wheels (7) arranged on the frame body, and the movement direction of the counterweight units (6) is opposite to that of the bearing platform (3); The counterweight unit (6) comprises a limiting plate (61) and a counterweight (64), one end of the limiting plate (61) is connected to the side end of the frame body, the other end of the limiting plate (61) is provided with a convex part with an I-shaped cross section, the counterweight (64) is provided with a groove matched with the convex part, and when the bearing platform (3) moves longitudinally, the counterweight (64) moves along the limiting plate (61).

10. A lifting device according to claim 9, characterised in that The counterweight unit (6) further comprises a first directional wheel set (65) and a second directional wheel set (66), the first directional wheel set (65) and the second directional wheel set (66) are both arranged in the groove of the counterweight (64) at intervals, and the rotation shaft directions of the first directional wheel set (65) and the second directional wheel set (66) are arranged orthogonally.

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