Anti-falling hovering assembly for conveying platform and control method

Abstract

The invention relates to the technical field of conveying platforms, in particular to an anti-falling hovering assembly for a conveying platform and a control method. The lifting platform is fixed at the top of the lifting frame; a gravity detection platform; the conveying platform is fixed at the top of the gravity detection platform; the conveying roller assembly is mounted on the conveying platform and used for conveying materials; the supporting piece is used for supporting the conveying platform and the lifting platform; the hovering assembly is used for relieving falling impact of the lifting platform through gradually-enhanced and controllable resistance when the lifting platform falls emergently, so that the lifting platform is promoted to hover, and impact damage is avoided; the gradually-increased friction force of the device counteracts the falling impact force of the lifting table, the borne resistance is bidirectional resistance, hovering of the lifting table in the falling process is achieved, and the situation that the conveyed materials are impacted and damaged due to impact vibration of the lifting table is avoided.

Description

Technical Field

[0001] This invention relates to the field of conveyor platforms, and more particularly to a fall-prevention hovering component and control method for conveyor platforms. Background Technology

[0002] Modular conveyor operation platforms are multifunctional logistics equipment composed of multiple combinable components. They can be flexibly assembled according to different operational needs, adapting to diverse cargo transportation and handling tasks. In warehousing, logistics, production and other fields, they can effectively improve conveying efficiency, are easy to adjust and expand, meet the requirements of changing operational scenarios, and provide stable and efficient platform support for material handling.

[0003] In the prior art, when a combined conveyor platform is used to transport materials, if the material being transported is too heavy when the platform is raised to its highest position, the excessive weight of the material can put a strain on the platform, potentially causing it to fall during transport and thus affecting its normal operation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fall-prevention hovering component and control method for a conveyor platform.

[0005] In a first aspect, the present invention provides a fall-prevention hovering assembly for a conveyor platform, comprising a lifting pit, and further comprising:

[0006] The lifting frame is installed inside the lifting pit;

[0007] A lifting platform is fixed to the top of the lifting frame;

[0008] A gravity detection platform is installed on top of the lifting platform;

[0009] A conveying platform is fixed to the top of the gravity detection platform;

[0010] A conveyor roller assembly, mounted on the conveying platform, is used for conveying materials;

[0011] Support members are installed on the inner wall of the lifting pit to support the conveying platform and the lifting platform;

[0012] A hovering assembly, installed on the inner wall of the lifting pit, is used to mitigate the impact of the lifting platform's fall by gradually increasing and controllable resistance when the lifting platform falls in an emergency, so as to cause the lifting platform to hover and avoid impact damage.

[0013] During operation, the lifting frame starts, driving the lifting platform to move vertically. This movement of the lifting platform, in turn, moves the conveyor platform. Once the conveyor platform reaches the conveying position, the conveyor roller assembly starts, transporting the material by rolling. During material transport, the lifting frame remains stable and stationary, while the support components support the lifting platform. If a equipment malfunction causes the conveyor platform and lifting platform to fall, the support components supporting the lifting platform will be damaged. In this case, the support components will provide cushioning support to the conveyor platform, preventing it from falling rapidly and causing damage to the material being transported on it during the fall. If the conveyor platform and lifting platform continue to fall, the suspension component uses gradually increasing friction to counteract the impact force of the falling lifting platform. This gradually increases the resistance experienced by the lifting platform during the fall, and this resistance is bidirectional. This means that while the impact force of the fall is counteracted, the upward rebound force is also hindered, thus facilitating the suspension of the lifting platform during the fall and preventing impact vibrations that could damage the transported material.

[0014] Preferably, the support member includes:

[0015] Multiple support frames are flipped and installed on the side wall of the lifting pit, and a stop block is fixed on the side wall of the lifting pit to limit the lowest position of the support frame.

[0016] Multiple tilting frames are located above each of the support frames and are tilted and installed on the side wall of the lifting pit. After the tilting frames are tilted downwards, they cover the ends of the support frames.

[0017] Multiple cylinders are fixed on the lifting platform;

[0018] Multiple suspension rods are fixed to the ends of each of the cylinders and are adapted to each of the support frames.

[0019] During the upward movement of the lifting platform, the support frame is pushed upward and flipped, while the flipping frame is also pushed until it moves between the flipping frame and the support frame. Torsion springs are installed between the pivots of the support frame and the flipping frame and the side wall of the lifting pit. Under the action of the torsion springs, the support frame flips back to its original position, so that when the lifting platform moves downward to the top of the support frame, it is supported by the support frame, forming a positioning support for the lifting platform. When the lifting platform needs to be reset, it is pushed upward. After the lifting platform moves to the top of the flipping frame, the flipping frame flips downward under the action of the torsion spring. The flipping frame covers the support frame, so that when the lifting platform moves downward, it can push the flipping frame to flip, and the flipping frame pushes the support frame to flip upward, thereby making way for the downward movement of the lifting platform, realizing the free up and down movement of the lifting platform, while providing support for the lifting platform and reducing the risk of falling.

[0020] Preferably, the support member further includes:

[0021] Multiple safety belts are attached to the top frame of the external equipment.

[0022] Multiple pulling heads are fixed to the edge of the conveyor platform, and each pulling head is pulled by a respective safety belt;

[0023] The seat belt adopts the principle of automotive seat belts. When the conveyor platform moves stably up and down, the seat belt will not hinder the movement of the conveyor platform. When the conveyor platform suddenly drops, the seat belt provides emergency pulling protection to prevent the conveyor platform from falling rapidly. In order to avoid the conveyor platform being subjected to sudden strong resistance during the drop, which would cause the conveyor platform to vibrate and sway, a certain elasticity can be set at the bottom of the seat belt. This allows the seat belt to have a certain range of elastic cushioning when braking. When the conveyor platform is cushioned downwards, it is simultaneously resisted by the suspension component to control the upward rebound of the conveyor platform, thereby improving the stability of the conveyor platform when suspended.

[0024] Preferably, the hovering component includes:

[0025] Multiple sets of gears, with multiple gears forming a group, and the gears in the same group arranged in a linear array;

[0026] Several rotating columns are fixed to both ends of each gear, rotatably mounted inside the inner wall of the lifting pit, and have friction with the inner wall of the lifting pit;

[0027] Multiple teeth are fixed to the ends of each of the suspension rods, and the teeth are adapted to the gears;

[0028] During the descent of the lifting platform, the teeth and gears installed on the platform mesh. The friction between the rotating column and the inner wall of the lifting pit creates frictional resistance during rotation. This frictional force cancels out the impact of the falling platform, thus buffering and suspending the platform. The multiple gears ensure that the platform continuously passes through them, further buffering the impact of the fall. If the platform vibrates during descent, it may tend to bounce upwards. In this case, the reverse rotation of the gears is still hindered by friction, thus simultaneously suppressing the vibration of the platform. This helps to mitigate the impact of the falling platform and achieve suspension.

[0029] Preferably, the hovering component further includes:

[0030] Multiple racks are slidably sleeved on the outside of each of the aforementioned suspension rods, and limit grooves are formed on the side walls of the racks;

[0031] Limiting blocks are fixed to the outer wall of each of the suspension rods to fit the limiting groove;

[0032] Multiple sets of second electric push rods are fixed on the lifting platform and used to push the rack to move;

[0033] After the second electric push rod is activated, it drives the rack to move. During normal operation of the lifting platform, the second electric push rod drives the rack to disengage from the teeth, making the teeth and the suspension rod independent of the rack. This facilitates the vertical movement and positioning of the suspension rod. When falling, the second electric push rod is activated, and it pushes the rack to engage with the teeth, forming a complete rack together. This allows the rack to engage multiple gears simultaneously during the fall, which helps to enhance the buffering and braking effect of friction, thus ensuring that the lifting platform can be stopped smoothly to prevent it from falling.

[0034] Preferably, the hovering component further includes:

[0035] All rotating columns are multi-faceted prisms, and the number of side edges of several rotating columns corresponding to the gears in the same group gradually decreases from top to bottom;

[0036] The surface of each rotating column is provided with a rubber layer;

[0037] The rotating column is designed as a multi-faceted prism, so that when the column rotates, its side edges create resistance to rotation. Since the surface of the rotating column is made of a rubber layer, and the rubber layer is made of a material that can produce slight deformation, the column can still break through the resistance when it is obstructed during rotation, thus offsetting the impact force of the fall. The more side edges the rotating column has, the closer it is to a cylinder, and the smaller the resistance generated. Therefore, the number of side edges decreases as the rotating column descends, which gradually increases the buffering resistance against the fall of the lifting platform. This helps to avoid damage caused by sudden and strong resistance during the fall of the lifting platform.

[0038] Preferably, the hovering component further includes:

[0039] Multiple connectors are fitted onto the outside of the rotating post through inner holes opened at their ends, and the shape of the inner holes is adapted to the corresponding rotating post.

[0040] Multiple movable plates, all of the connectors located on the same side of the gears in the same group are fixedly connected to the side wall of the movable plate;

[0041] Multiple first electric push rods are installed on the side wall of the lifting pit, and each of them drives the movement of the moving plate.

[0042] The first electric push rod drives the moving plate to move, and the moving plate drives the plug to move. As the plug moves toward the rotating column, the contact area gradually increases, thereby increasing the frictional resistance. This helps to adjust the frictional resistance and allows for adjustment of the downward buffer resistance of the lifting platform. When conveying large-mass materials, it can increase the resistance to avoid hovering failure.

[0043] Preferably, the hovering component further includes:

[0044] A speed sensor, installed on the side wall of the lifting pit, is used to detect the rotational speed of the gear located in the middle of a set;

[0045] When the speed sensor detects that the rotational speed of the gear is higher than the set stable buffer speed, the controller controls the first electric push rod to push the moving plate towards the gear.

[0046] The speed sensor can detect the rotational speed of the gear in the middle. When the rotational speed of the gear exceeds the set stable buffer speed, it indicates that the buffering resistance against the falling of the lifting platform is insufficient, and there is a probability of hovering failure. At this time, the controller controls the first electric push rod to push the moving plate towards the gear, increasing the frictional resistance, which helps to improve the hovering stability.

[0047] Preferably, the hovering component further includes:

[0048] The rubber layer includes a plurality of friction strips with a high coefficient of friction and smooth strips with a low coefficient of friction. The friction strips and the smooth strips are spaced apart and connected end to end to surround the rotating column.

[0049] The inner wall of the inner hole is provided with the same rubber layer as the rotating column;

[0050] The spacing between the friction strips and the smooth strips ensures that, in the initial position, the smooth strips on the inner wall of the inner hole and the outer wall of the rotating column correspond to the friction strips, thus reducing the resistance when pushing the connector. During rotation, when the friction strips are opposite each other, the resistance increases, which helps to adapt to different motion conditions.

[0051] A control method for a fall-prevention hovering component for a conveyor platform, the control method comprising the following steps:

[0052] Step 1: Use the lifting frame to push the lifting platform and move the conveyor platform upward to the working position, and use the support components to support the lifting platform;

[0053] Step 2: In the event of a fall, the cushioning function of the support components is triggered to buffer the movement of the conveyor platform.

[0054] Step 3: When the support component triggers the buffer, the hovering component is activated simultaneously. The gradually increasing friction force counteracts the impact force during the descent of the lifting platform until the impact force on the lifting platform disappears, thus achieving the hovering of the lifting platform.

[0055] Step 4: During the triggering of the hovering component, the hovering component simultaneously detects the falling speed of the lifting platform. When the falling speed is detected to be higher than the set stable buffer speed, the enhancement function of the hovering component is triggered to improve the strength of the hovering component in offsetting the impact force of the lifting platform, so as to achieve the hovering of the lifting platform.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] 1. The hovering component uses gradually increasing friction to counteract the impact force of the lifting platform falling, and the resistance it receives is bidirectional, so as to achieve the hovering of the lifting platform during the falling process and avoid the impact vibration of the lifting platform that could cause damage to the conveyed materials.

[0058] 2. By setting up a multi-faceted prism, the more side edges the rotating column has, the less resistance is generated. The number of side edges decreases as the rotating column moves downward, gradually increasing the buffer resistance. This helps to prevent the lifting platform from being damaged by sudden and strong resistance during its descent.

[0059] 3. By setting the interval between friction strips and smooth strips, the resistance decreases when the smooth strip is opposite to the friction strip, and the resistance increases when the friction strips are opposite each other, which helps to adapt to different motion conditions. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0061] Figure 2 This is a schematic diagram of the overall cross-section of the present invention. Figure 1 .

[0062] Figure 3 For the present invention Figure 2 A magnified structural diagram of point A in the middle.

[0063] Figure 4 This is a schematic diagram of the overall cross-section of the present invention. Figure 2 .

[0064] Figure 5 This is a schematic diagram of the hovering component of the present invention.

[0065] Figure 6 This is a schematic diagram of the internal structure of the lifting pit of the present invention.

[0066] In the diagram: 1. Conveying platform; 101. Conveying roller assembly; 102. Lifting platform; 103. Gravity detection platform; 104. Lifting frame; 105. Lifting pit; 2. Support frame; 201. Tilting frame; 202. Suspension bar; 203. Cylinder; 3. Safety belt; 301. Pulling head; 4. Gear; 401. Tooth; 402. Rotating column; 5. Moving plate; 501. Connector; 502. First electric push rod; 503. Inner hole; 6. Rack; 601. Second electric push rod. Detailed Implementation

[0067] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0068] like Figures 1 to 6 A fall arrestor assembly for a conveyor platform, shown, includes a lifting pit 105 and further includes:

[0069] The lifting frame 104 is installed inside the lifting pit 105;

[0070] The lifting platform 102 is fixed to the top of the lifting frame 104;

[0071] The gravity detection platform 103 is installed on top of the lifting platform 102;

[0072] Conveying platform 1 is fixed to the top of gravity detection platform 103;

[0073] The conveyor roller assembly 101 is installed on the conveyor platform 1 and is used to convey materials;

[0074] Support components are installed on the inner wall of the lifting pit 105 to support the conveying platform 1 and the lifting platform 102.

[0075] The hovering component is installed on the inner wall of the lifting pit 105. It is used to mitigate the impact of the falling of the lifting platform 102 by gradually increasing and controllable resistance when the lifting platform 102 falls in an emergency, so as to make the lifting platform 102 hover and avoid impact damage.

[0076] In the existing technology, when a combined conveyor platform is used to transport materials, if the material being transported is too heavy when the platform is raised to its highest position, the excessive weight of the material will put a burden on the platform, which may cause it to fall during transport and thus affect its normal operation.

[0077] This embodiment of the invention can solve the above problems. The specific implementation is as follows: During operation, the lifting frame 104 starts and drives the lifting platform 102 to move vertically. During the movement of the lifting platform 102, the conveying platform 1 moves. After the conveying platform 1 moves to the conveying position, the conveying roller assembly 101 starts and conveys the material by rolling. During the material conveying process, the lifting frame 104 remains stable and stationary, and the support member supports the lifting platform 102. If a equipment failure causes the conveying platform 1 and the lifting platform 102 to fall, the support position of the support member on the lifting platform 102 will be damaged. At this time, the support member provides buffer support for the conveying platform 1, thereby preventing the conveying platform 1 from falling. Rapid descent causes the material being conveyed on the conveyor platform 1 to be damaged by impact during the descent. If the conveyor platform 1 and the lifting platform 102 continue to fall, the suspension component will gradually increase the frictional force to offset the impact force of the falling lifting platform 102. This will gradually increase the resistance experienced by the lifting platform 102 during the descent, and the resistance will be bidirectional. This will not only offset the impact force of the falling lifting platform 102, but also hinder the upward rebound force, thus helping to achieve suspension of the lifting platform 102 during the descent and avoiding the impact vibration of the lifting platform 102 that could cause damage to the conveyed material.

[0078] As an optional embodiment, the support includes:

[0079] Multiple support frames 2 are flipped and installed on the side wall of the lifting pit 105, and a stop block is fixed on the side wall of the lifting pit 105 to limit the lowest position of the support frame 2.

[0080] Multiple tilting frames 201 are located above each support frame 2 and are tilted and installed on the side wall of the lifting pit 105. After the tilting frame 201 tilts downward, it covers the end of the support frame 2.

[0081] Multiple cylinders 203 are fixed on the lifting platform 102;

[0082] Multiple suspension rods 202 are fixed to the ends of each cylinder 203 and are adapted to each support frame 2.

[0083] During the upward movement of the lifting platform 102, it pushes the support frame 2 to flip upward, and simultaneously pushes the flipping frame 201 until it moves between the flipping frame 201 and the support frame 2. Torsion springs are installed between the pivots of the support frame 2 and the flipping frame 201 and the side wall of the lifting pit 105. Under the action of the torsion springs, the support frame 2 flips back to its original position, so that when the lifting platform 102 moves downward to the top of the support frame 2, it is supported by the support frame 2, forming a positioning support for the lifting platform 102. When the lifting platform 102 needs to be reset, it is pushed upward. After the lifting platform 102 moves to the top of the flipping frame 201, the flipping frame 201 flips downward under the action of the torsion spring. The flipping frame 201 covers the support frame 2, so that when the lifting platform 102 moves downward, it can push the flipping frame 201 to flip. The flipping frame 201 pushes the support frame 2 to flip upward, thereby making way for the downward movement of the lifting platform 102, realizing the free up and down movement of the lifting platform 102, and at the same time providing support for the lifting platform 102, reducing the risk of falling.

[0084] As an optional embodiment, the support also includes:

[0085] Multiple safety belts 3, fixed at the top to the top frame of the external equipment;

[0086] Multiple pulling heads 301 are fixed to the edge of the conveyor platform 1, and each pulling head 301 is pulled by a safety belt 3.

[0087] The seat belt 3 adopts the principle of automotive seat belts. When the conveyor platform 1 moves stably up and down, the seat belt 3 will not hinder the movement of the conveyor platform 1. When the conveyor platform 1 suddenly falls, the seat belt 3 provides emergency pulling protection to prevent the conveyor platform 1 from falling rapidly. In order to prevent the conveyor platform 1 from being subjected to sudden strong resistance during the fall, which would cause the conveyor platform 1 to vibrate and sway, the bottom of the seat belt 3 can be set with a certain degree of elasticity. This allows the seat belt 3 to have a certain range of elastic cushioning when braking. When the conveyor platform 1 is cushioned downwards, it is simultaneously hindered by the suspension component to control the upward rebound of the conveyor platform 1, thereby improving the stability of the suspension of the conveyor platform 1.

[0088] As an optional embodiment, the hovering component includes:

[0089] Multiple sets of gears 4, with multiple gears 4 forming a group, and gears 4 in the same group arranged in a linear array;

[0090] Several rotating columns 402 are fixed to both ends of each gear 4, rotatably installed inside the inner wall of the lifting pit 105, and have friction with the inner wall of the lifting pit 105.

[0091] Multiple teeth 401 are fixed to the ends of each suspension rod 202, and the teeth 401 are adapted to the gear 4;

[0092] During the descent of the lifting platform 102, the teeth 401 installed on the lifting platform 102 mesh with the gears 4. The gears 4 generate frictional resistance during rotation due to the friction between the rotating column 402 and the inner wall of the lifting pit 105. This causes the impact force of the falling lifting platform 102 to cancel out the frictional force of the gears 4, thus achieving buffering and hovering of the lifting platform 102. The arrangement of multiple gears 4 ensures that the lifting platform 102 continuously passes through each gear 4, continuously buffering the impact force of the fall. If the lifting platform 102 vibrates during its descent, it will tend to bounce upwards. In this case, the reverse rotation of the gears 4 is still hindered by friction, thus simultaneously suppressing the vibration of the lifting platform 102. This helps to alleviate the impact force of the falling lifting platform 102 and achieve hovering of the lifting platform 102.

[0093] As an optional embodiment, the hovering component further includes:

[0094] Multiple racks 6 are slidably sleeved on the outside of each suspension rod 202, and limit grooves are provided on the side wall of the racks 6;

[0095] Limiting blocks are fixed to the outer wall of each suspension rod 202 to fit the limiting groove;

[0096] Multiple sets of second electric push rods 601 are fixed on the lifting platform 102 and are used to push the rack 6 to move;

[0097] After the second electric push rod 601 is activated, it drives the rack 6 to move. During the normal operation of the lifting platform 102, the second electric push rod 601 drives the rack 6 to disengage from the teeth 401, so that the teeth 401 and the suspension rod 202 are independent of the rack 6, which facilitates the vertical movement and positioning of the suspension rod 202. When falling, the second electric push rod 601 is triggered to activate. The second electric push rod 601 pushes the rack 6 to engage with the teeth 401, forming a complete rack together with the teeth 401. This allows the rack 6 to simultaneously mesh with multiple gears 4 during the fall, which helps to enhance the buffering braking effect of friction, thus helping to ensure that the lifting platform 102 can be successfully stopped to avoid falling.

[0098] As an optional embodiment, the hovering component further includes:

[0099] All rotating columns 402 are multi-faceted prisms, and the number of side edges of several rotating columns 402 corresponding to the same group of gears 4 gradually decreases from top to bottom;

[0100] The surface of the rotating column 402 is provided with a rubber layer;

[0101] The rotating column 402 is designed as a multi-faceted prism, so that when the rotating column 402 rotates, the side edges of the rotating column 402 will generate resistance to the rotation. Since the surface of the rotating column 402 is a rubber layer, the rubber layer is made of a material that can produce slight deformation. When the rotating column 402 is obstructed by the side edges, the rubber layer will deform slightly, so that the rotating column 402 can break through the obstruction. This has the effect of offsetting the impact force of falling. The more side edges the rotating column 402 has, the closer the rotating column 402 is to the cylinder, and the smaller the resistance generated. Therefore, the number of side edges of the rotating column 402 decreases as it goes down, so as to gradually increase the buffer resistance against the falling of the lifting platform 102. This helps to avoid the lifting platform 102 being damaged by sudden and strong resistance during the fall.

[0102] As an optional embodiment, the hovering component further includes:

[0103] Multiple connectors 501 are fitted onto the outside of the rotating post 402 through inner holes 503 at their ends, and the shape of the inner holes 503 is adapted to the corresponding rotating post 402.

[0104] Multiple movable plates 5, all of the connectors 501 located on the same side of the gears 4 in the same group are fixedly connected to the side wall of the movable plate 5;

[0105] Multiple first electric push rods 502 are installed on the side wall of the lifting pit 105, and each of them drives the movement of the moving plate 5.

[0106] The first electric push rod 502 drives the moving plate 5 to move, and the moving plate 5 drives the plug 501 to move. As the plug 501 moves toward the rotating column 402, the contact area gradually increases, thereby increasing the frictional resistance. This helps to adjust the frictional resistance, allowing the downward buffer resistance of the lifting platform 102 to be adjusted. When conveying large-mass materials, the resistance can be increased to avoid the occurrence of suspension failure.

[0107] As an optional embodiment, the hovering component further includes:

[0108] A speed sensor, installed on the side wall of the lifting pit 105, is used to detect the rotational speed of the gear 4 located in the middle of a set;

[0109] When the speed sensor detects that the rotational speed of gear 4 is higher than the set stable buffer speed, the controller controls the first electric push rod 502 to push the moving plate 5 to move in the direction of gear 4.

[0110] The speed sensor can detect the rotational speed of the gear 4 in the middle. When the rotational speed of the gear 4 exceeds the set stable buffer speed, it indicates that the buffer resistance against the fall of the lifting platform 102 is insufficient and there is a probability of hovering failure. At this time, the controller controls the first electric push rod 502 to push the moving plate 5 towards the gear 4 to increase the frictional resistance, thereby improving the hovering stability.

[0111] As an optional embodiment, the hovering component further includes:

[0112] The rubber layer includes several friction strips with a high coefficient of friction and smooth strips with a low coefficient of friction. The friction strips and smooth strips are spaced apart and connected end to end around the rotating column 402.

[0113] The inner wall of the inner hole 503 is provided with the same rubber layer as the rotating column 402;

[0114] The spacing between the friction strips and the smooth strips ensures that, in the initial position, the smooth strips on the inner wall of the inner hole 503 and the outer wall of the rotating column 402 correspond to the friction strips, thus reducing the resistance when pushing the connector 501. During rotation, when the friction strips are opposite each other, the resistance increases, which helps to adapt to different motion conditions.

[0115] A control method for a fall-prevention hovering component for a conveyor platform, the control method comprising the following steps:

[0116] Step 1: The lifting platform 102 is pushed by the lifting frame 104 to move the conveying platform 1 upward to the working position, and the lifting platform 102 is supported by the support members;

[0117] Step 2: When a fall occurs, the cushioning function of the support is triggered to buffer the conveyor platform 1.

[0118] Step 3: When the support triggers the buffer, the hovering component is activated at the same time. The gradually increasing friction force counteracts the impact force during the descent of the lifting platform 102 until the impact force on the lifting platform 102 disappears, thus achieving the hovering of the lifting platform 102.

[0119] Step 4: During the triggering of the hovering component, the hovering component simultaneously detects the falling speed of the lifting platform 102. When the falling speed is detected to be higher than the set stable buffer speed, the enhancement function of the hovering component is triggered to improve the offsetting strength of the impact force of the lifting platform 102, so as to achieve the hovering of the lifting platform 102.

[0120] Working principle of this invention: During operation, the lifting frame 104 starts and drives the lifting platform 102 to move vertically. As the lifting platform 102 moves, it also drives the conveying platform 1 to move. After the conveying platform 1 reaches the conveying position, the conveying roller assembly 101 starts and conveys the material by rolling. During material conveying, the lifting frame 104 remains stable and stationary, and the support members support the lifting platform 102. If a equipment malfunction causes the conveying platform 1 and the lifting platform 102 to fall, the support position of the support members on the lifting platform 102 will be damaged. At this time, the support members provide buffer support for the conveying platform 1, thereby preventing the conveying platform 1 from falling rapidly and causing damage to the conveying system. The material being transported on platform 1 is damaged by impact during its descent. If the conveying platform 1 and the lifting platform 102 continue to fall, the suspension component will gradually increase the frictional force to offset the impact force of the falling lifting platform 102. This will gradually increase the resistance experienced by the lifting platform 102 during its descent, and the resistance will be bidirectional. This will offset the impact force of the falling lifting platform 102 while simultaneously hindering the upward rebound force, thus helping to achieve suspension of the lifting platform 102 during its descent and preventing the material being transported from being damaged by impact vibration.

[0121] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A fall-prevention hovering assembly for a conveyor platform, comprising a lifting pit (105), characterized in that, Also includes: The lifting frame (104) is installed inside the lifting pit (105); The lifting platform (102) is fixed to the top of the lifting frame (104); A gravity detection platform (103) is installed on top of the lifting platform (102); The conveying platform (1) is fixed to the top of the gravity detection platform (103); A conveyor roller assembly (101) is installed on the conveyor platform (1) for conveying materials; Support members are installed on the inner wall of the lifting pit (105) to support the conveying platform (1) and the lifting platform (102); A hovering assembly is installed on the inner wall of the lifting pit (105) to mitigate the impact of the lifting platform (102) falling in an emergency by gradually increasing and controllable resistance, so as to cause the lifting platform (102) to hover and avoid impact damage.

2. The anti-fall hovering component for a conveyor platform according to claim 1, characterized in that, The support member includes: Multiple support frames (2) are flipped and installed on the side wall of the lifting pit (105), and a stop block is fixed on the side wall of the lifting pit (105) to limit the lowest position of the support frame (2). Multiple flip frames (201) are located above each of the support frames (2) and are flipped and installed on the side wall of the lifting pit (105). After the flip frames (201) flip downward, they cover the end of the support frame (2). Multiple cylinders (203) are fixed on the lifting platform (102); Multiple suspension rods (202) are fixed to the ends of each of the cylinders (203) and are adapted to each of the support frames (2).

3. The anti-fall hovering component for a conveyor platform according to claim 2, characterized in that, The support member also includes: Multiple safety belts (3) are fixed to the top frame of the external equipment; Multiple pull heads (301) are fixed to the edge of the conveying platform (1), and each pull head (301) is pulled by each of the safety belts (3).

4. The anti-fall hovering component for a conveyor platform according to claim 2, characterized in that, The hovering component includes: Multiple sets of gears (4), with multiple gears (4) forming a group, and the gears (4) in the same group arranged in a linear array; Several rotating columns (402) are fixed to both ends of each gear (4), rotatably installed inside the inner wall of the lifting pit (105), and there is friction between them and the inner wall of the lifting pit (105); Multiple teeth (401) are fixed to the ends of each of the suspension rods (202), and the teeth (401) are adapted to the gear (4).

5. A fall-prevention hovering assembly for a conveyor platform according to claim 4, characterized in that, The hovering component also includes: Multiple racks (6) are slidably sleeved on the outside of each of the suspension rods (202), and a limiting groove is provided on the side wall of each rack (6); Limiting blocks are fixed to the outer wall of each of the suspension rods (202) to fit the limiting groove; Multiple sets of second electric push rods (601) are fixed on the lifting platform (102) and used to push the rack (6) to move.

6. A fall-prevention hovering assembly for a conveyor platform according to claim 5, characterized in that, The hovering component also includes: The rotating columns (402) are all multi-faceted prisms, and the number of side edges of the rotating columns (402) corresponding to the gears (4) in the same group gradually decreases from top to bottom; The surface of the rotating column (402) is provided with a rubber layer.

7. A fall-prevention hovering assembly for a conveyor platform according to claim 6, characterized in that, The hovering component also includes: Multiple connectors (501) are fitted onto the outside of the rotating post (402) through inner holes (503) at their ends, and the shape of the inner holes (503) is adapted to the corresponding rotating post (402). Multiple movable plates (5), all of the connectors (501) located on the same side of the gears (4) in the same group are fixedly connected to the side wall of the movable plate (5); Multiple first electric push rods (502) are installed on the side wall of the lifting pit (105) and drive each of the moving plates (5) to move.

8. A fall-prevention hovering assembly for a conveyor platform according to claim 7, characterized in that, The hovering component also includes: A speed sensor is installed on the side wall of the lifting pit (105) to detect the rotational speed of the gear (4) located in the middle of a set; When the speed sensor detects that the rotational speed of the gear (4) is higher than the set stable buffer speed, the controller controls the first electric push rod (502) to push the moving plate (5) to move in the direction of the gear (4).

9. A fall-prevention hovering assembly for a conveyor platform according to claim 7, characterized in that, The hovering component also includes: The rubber layer includes a plurality of friction strips with a high coefficient of friction and smooth strips with a low coefficient of friction. The friction strips and the smooth strips are spaced apart and connected end to end around the rotating column (402). The inner wall of the inner hole (503) is provided with the same rubber layer as that of the rotating column (402).

10. A control method for a fall-prevention hovering assembly for a conveyor platform, applicable to the fall-prevention hovering assembly for a conveyor platform as described in any one of claims 1 to 9, characterized in that, The control method includes the following steps: Step 1: The lifting platform (102) is pushed by the lifting frame (104) to move the conveying platform (1) upward to the working position, and the lifting platform (102) is supported by the support components; Step 2: When a fall occurs, the buffer function of the support is triggered to buffer the conveyor platform (1) by pulling it. Step 3: When the support triggers the buffer, the hovering component is activated at the same time. The gradually increasing friction force counteracts the impact force during the descent of the lifting platform (102) until the impact force of the lifting platform (102) disappears, thus achieving the hovering of the lifting platform (102). Step 4: During the triggering process of the hovering component, the hovering component simultaneously detects the falling speed of the lifting platform (102). When the falling speed is detected to be higher than the set stable buffer speed, the enhancement function of the hovering component is triggered to improve the offsetting strength of the impact force of the hovering component on the lifting platform (102) so as to achieve the hovering of the lifting platform (102).

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