Warehouse cargo lifting equipment and use method thereof

Abstract

The present invention provides a warehouse cargo lifting device and a method for using the same, which belongs to the technical field of lifting devices. The technical solution is as follows: a warehouse cargo lifting device includes a balance plate, a protective shell is fixed to the bottom of the balance plate, and two lifting components are symmetrically arranged inside the protective shell, and the two lifting components can adjust the heights of both sides of the first lifting frame respectively. A method for using the warehouse cargo lifting device, the lifting component raises or lowers the height of the corresponding side of the first lifting frame based on the center of gravity state information of the first lifting frame until the pressure on both sides of the first lifting frame is restored to balance. The beneficial effect of the present invention is that the device can automatically adjust the posture of the first lifting frame when the center of gravity of the cargo shifts and causes the pulling force to be unbalanced, so that the pulling force on both sides is restored to balance, thereby effectively preventing the occurrence of overload transportation and ensuring the stability and safety of the lifting process.

Description

Technical Field

[0001] The present invention belongs to the technical field of lifting devices, and in particular relates to a storage cargo lifting device and a method for using the same. Background Art

[0002] In modern warehousing and logistics systems, cargo lifting equipment plays an indispensable role. It enables efficient transfer of cargo between storage areas at different heights, greatly improving storage space utilization, reducing labor handling costs, and significantly increasing overall warehousing efficiency. It is a key piece of equipment that ensures the smooth operation of warehousing and logistics processes.

[0003] Existing warehouse cargo lifting equipment primarily consists of a lifting frame, a support frame, winding rollers, and steel cables. The lifting frame is used to carry cargo, and an external support frame is installed to provide stable support for the entire lifting system. Several winding rollers are mounted on the support frame, around which steel cables are wound. The ends of the cables are fixedly connected to the top of the lifting frame. When cargo needs to be lifted, staff rotate the winding rollers, gradually retracting the cables. Under the tension of the cables, the lifting frame steadily lifts the cargo and delivers it to the designated storage location. To lower the cargo, the winding rollers rotate in the opposite direction, releasing the cables. This simple and effective method of operation enables vertical transportation of cargo during storage.

[0004] However, in actual use, the shapes and sizes of goods vary greatly, and precise positioning is difficult to achieve. When the goods are placed on the lifting frame, the center of gravity can easily shift to one side. Once the center of gravity shifts, the steel cables in the direction of the center of gravity shift will be required to withstand a tension far exceeding normal levels. Long-term overload of the steel cables will accelerate wear, and the internal structure will gradually fatigue and age due to excessive stress. After repeatedly bearing enormous tension, the strength of the steel cables decreases and may eventually break, causing the lifting frame and the goods to fall. This not only causes serious damage to the goods and direct economic losses, but also poses a serious threat to the safety of on-site workers, greatly restricting the safety and stability of warehousing operations. Summary of the Invention

[0005] The present invention addresses the problem that the shift in the center of gravity of the cargo leads to unbalanced pulling force, which in turn causes the storage cargo lifting equipment to overload. It provides a storage cargo lifting equipment and a method of using the equipment, which can adjust the center of gravity of the cargo to make the pulling force balanced and avoid overloading.

[0006] On the first aspect, in order to solve the above problems, the technical solution adopted by the present invention is a warehouse cargo lifting equipment, including a first lifting frame, a second lifting frame is arranged on the outside of the first lifting frame, a balance plate is arranged above the second lifting frame, a first pull rope is connected between the balance plate and the second lifting frame, a second pull rope is fixed to the top of the balance plate, a protective shell is fixed to the bottom of the balance plate, and two lifting components are symmetrically arranged inside the protective shell, and the two lifting components can respectively adjust the height of both sides of the first lifting frame; a center of gravity detection component is arranged in the empty groove between the bottom of the first lifting frame and the second lifting frame, and the center of gravity detection component can monitor the center of gravity state of the first lifting frame, and can feed back the center of gravity state information of the first lifting frame to the lifting component.

[0007] In this technical solution, the cargo is placed in the first lifting frame, which then applies pressure to the center of gravity detection component below. The center of gravity detection component monitors the pressure on both sides of the first lifting frame in real time, calculates the center of gravity changes, and feeds back the center of gravity status information to the pulling component. Based on the feedback information, the pulling component adjusts the height of both sides of the first lifting frame until the pressure on the center of gravity detection component on both sides of the first lifting frame is balanced. Therefore, when the center of gravity of the cargo shifts and causes uneven pulling force, this device can restore the pulling force to a balanced state by adjusting the height of both sides of the first lifting frame, effectively avoiding overload transportation.

[0008] Furthermore, the first lifting frame includes a base plate with partition doors on both sides of the base plate along its length. Guard plates are fixed to both sides of the base plate along its width. The guard plates include a vertical portion at the bottom, a horizontal portion at the top, and a central, inclined portion that slopes inwardly toward the base plate. The bottom surface of the horizontal portion is mounted with a first guide wheel. The inclined portion is provided with a second through hole positioned corresponding to the first guide wheel, and the outer side surface of the inclined portion is mounted with a second guide wheel positioned corresponding to the second through hole. The partition doors are provided on both sides of the base plate along its length, facilitating the loading and unloading of cargo from both sides, thereby improving the convenience and efficiency of cargo loading and unloading. The guard plates on both sides of the base plate along its width protect the cargo within the first lifting frame, preventing it from falling during the lifting process and protecting nearby personnel from injury from falling cargo. The first guide wheel is mounted on the bottom surface of the horizontal portion of the guard plates, while the second guide wheel is mounted on the outer side surface of the inclined portion, corresponding to the position of the first guide wheel. This layout provides a reasonable guide path for the wire rope in the lifting assembly, allowing the wire rope to change direction more smoothly as it passes around the guide wheels.

[0009] Furthermore, a third guide wheel is installed inside the protective shell, a first through hole is provided at the top of the second lifting frame, and the lifting assembly includes a winch, which is fixed inside the protective shell. A steel wire rope is connected to the output end of the winch, and the ends of the steel wire rope are passed through the third guide wheel, the first guide wheel, and the second guide wheel in sequence and fixedly connected to the top of the lifting plate. The lifting plate is located on the outside of the vertical portion of the guard plate, and a pull plate is fixed to the bottom of the lifting plate. A fixed frame is provided below the pull plate, and the fixed frame is fixed to the outer side of the vertical portion of the guard plate. A first top plate is provided inside the fixed frame, and the upper surface of the first top plate is fixedly connected to the bottom of the second connecting block. The top of the second connecting block passes through the top of the fixed frame and is fixedly connected to the pull plate, and the second connecting block is placed vertically. Installing the winch and the third guide wheel inside the protective shell makes the overall structure more compact and effectively utilizes space. At the same time, the protective shell can also protect the internal components and prevent them from being interfered with and damaged by external factors. The wire rope passes around the third guide wheel, the first guide wheel and the second guide wheel in sequence. This multi-guide wheel design can flexibly change the direction of the wire rope, so that the pulling force of the winch can be effectively transmitted to the lifting plate.

[0010] Furthermore, guide rods are installed on both sides of the first top plate. These rods are vertically positioned, with one end fixedly connected to the top surface of the first top plate and the other end extending through the top of the fixed frame. These guide rods provide a clear guide for the movement of the first top plate, making the lifting process more precise and controllable. When the winch pulls the lifting plate via the wire rope, the guide rods ensure that the first top plate moves along the predetermined path, facilitating precise adjustment of the height of the first lifting frame.

[0011] Furthermore, a second top plate is fixed to the bottom of the fixed frame. The second top plate comprises a first plate and a second plate that are perpendicular to each other. The first plate is fixedly connected to the bottom of the base plate, and the second plate is fixedly connected to the vertical portion of the guard plate. The perpendicular first and second plates are connected to the base plate and guard plate, respectively, increasing the number of connection points and the connection area. Compared to a single connection method, this method can more firmly fix the fixed frame and improve the reliability of the connection, ensuring that the connection will not loosen due to factors such as vibration and impact during long-term use, thereby ensuring the safe operation of the entire device.

[0012] Furthermore, a stabilizing plate is fixed to the outer side of the vertical portion of the guard plate. The stabilizing plate is located between the lifting plate and the pull plate. A first connecting block is provided on the stabilizing plate, extending through the stabilizing plate. The first connecting block is positioned vertically, with the top of the first connecting block fixedly connected to the bottom of the lifting plate, and the bottom of the first connecting block fixedly connected to the pull plate. The first connecting block, extending through the stabilizing plate and positioned vertically, restricts the horizontal movement of the lifting plate and the pull plate to vertical movement. This helps improve the accuracy of the lifting process, ensuring that the first lifting frame can rise and fall smoothly, reducing shaking and deviation.

[0013] Furthermore, the center of gravity detection assembly includes two movable plates, symmetrically distributed within the slot along the width of the base plate. A base is disposed between each movable plate and the base plate, the top of the base being fixedly connected to the base plate, and the bottom of the base abutting the upper surface of the movable plate. A weight sensor is disposed between each movable plate and the second lifting frame, the weight sensor being fixed to the second lifting frame, with the detection end of the weight sensor abutting the bottom of the movable plate. By using the two movable plates, symmetrically distributed along the width of the base plate, and the weight sensors associated therewith, the weight change of the cargo at two symmetrical positions when placed on the first lifting frame can be detected in real time. Based on the difference in the values ​​of the weight sensors on both sides, it is possible to accurately determine whether the center of gravity of the cargo deviates from the center position. Furthermore, the center of gravity detection assembly is adaptable to cargo of varying shapes and weight distributions. Regardless of whether the cargo is of regular or irregular shape, once placed on the first lifting frame, the center of gravity detection assembly can sense the weight distribution through the two movable plates and weight sensors, thereby effectively detecting the center of gravity position, thus providing strong versatility and adaptability.

[0014] Furthermore, a connector is provided between the two movable plates, which is fixedly connected to the second lifting frame. Positioning posts are fixed on both sides of the connector, with the axes of the positioning posts being in the vertical direction. The two positioning posts extend through the two movable plates, respectively. A rod extending through the movable plates is provided on each movable plate, with the axes of the rods being in the vertical direction. The upper ends of the rods are fixedly connected to the second top plate, while the lower ends of the rods extend through the movable plates and are fixedly connected to the limit blocks. The connector is fixedly connected to the second lifting frame, with the positioning posts on both sides extending through the two movable plates. This restricts the horizontal movement of the movable plates, ensuring that the movable plates can only make slight vertical movements based on changes in cargo weight, thereby improving the accuracy of center of gravity detection. The rods extend through the movable plates, with their upper ends fixed to the second top plate and their lower ends fixed to the limit blocks. This further restricts the vertical movement of the movable plates, making the lifting and lowering of the movable plates smoother and more precise, preventing the movable plates from tilting or shaking during movement, and ensuring the accuracy of the weight sensor detection data.

[0015] Furthermore, four first pull ropes are evenly distributed at the four corners of the balance board. Their upper ends are fixedly connected to the bottom of the balance board, while their lower ends are fixedly connected to the corresponding corners at the top of the second lifting frame. The four corners of the balance board's bottom are connected to the four corners of the second lifting frame via the first pull ropes, forming a stable restraint system. This system not only effectively disperses the pulling force during the lifting process, reducing the stress burden on individual pull ropes, but also enhances the overall stability of the structure. Even in harsh working environments or complex stress conditions, it ensures a secure connection between the components, significantly reducing the risk of first pull ropes breaking or loosening at the connection points.

[0016] In a second aspect, the present invention further provides a method for using a storage cargo lifting device, which is applied to the storage cargo lifting device and comprises the following steps:

[0017] Step one: Place the cargo in the first lifting frame, which applies pressure to the center of gravity detection component below. The first lifting frame acts as a medium between the cargo and the center of gravity detection component, and can accurately transfer the weight of the cargo to the center of gravity detection component in the form of pressure, providing a basis for subsequent accurate detection of center of gravity changes.

[0018] In step two, the center of gravity detection component monitors the pressure values ​​applied to the first lifting frame on both sides in real time, calculates the changes in the center of gravity of the first lifting frame, and then feeds back the center of gravity status information of the first lifting frame to the lifting component; by monitoring the pressure value in real time, any changes in the center of gravity of the first lifting frame can be captured in time. This real-time performance enables the system to respond quickly to changes in the center of gravity and take timely measures to make adjustments to avoid dangerous situations caused by excessive center of gravity offset. By calculating the changes in the center of gravity based on the pressure values ​​on both sides, the position and degree of offset of the center of gravity of the first lifting frame can be accurately determined. This precise calculation provides accurate data support for the subsequent precise adjustment of the lifting component. Feeding back the center of gravity status information to the lifting component allows the entire system to automatically adjust according to actual conditions without manual intervention, thereby improving work efficiency and automation.

[0019] In step three, the lifting assembly raises or lowers the corresponding side of the first lifting frame based on the center of gravity status information provided by the center of gravity detection assembly until the pressure exerted by both sides of the first lifting frame on the center of gravity detection assembly is balanced. The lifting assembly automatically adjusts based on the information provided by the center of gravity detection assembly, achieving automatic balancing of the center of gravity of the first lifting frame. This automatic adjustment function quickly and effectively responds to changes in the center of gravity, avoiding the errors and delays that can occur with manual adjustments, and improving the stability and safety of the system.

[0020] It can be seen from the above technical solution that the advantage of the present invention is that: in this technical solution, after the cargo is placed in the first lifting frame, the first lifting frame will apply pressure to the center of gravity detection component below. The center of gravity detection component dynamically calculates the changes in the center of gravity of the cargo by monitoring the pressure data on both sides of the first lifting frame in real time, and feeds back the real-time center of gravity status information to the lifting component. The lifting component adjusts the lifting height on both sides of the first lifting frame according to the feedback information received until the pressure on the center of gravity detection component on both sides of the first lifting frame reaches a balanced state again. In summary, through this closed-loop adjustment mechanism, the present device can automatically adjust the posture of the first lifting frame when the center of gravity of the cargo shifts and causes an imbalance in the pulling force, so that the pulling force on both sides is restored to balance, thereby effectively preventing the occurrence of overload transportation and ensuring the stability and safety of the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. 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 these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of a specific embodiment of the present invention Figure 1 ;

[0023] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0024] Figure 3 A schematic diagram of the structure of a specific embodiment of the present invention Figure 2 ;

[0025] Figure 4 It is a side structural schematic diagram of a specific embodiment of the present invention;

[0026] Figure 5 It is a partial schematic diagram of the side structure of a specific embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the main structure of a specific embodiment of the present invention;

[0028] Figure 7 It is a partial schematic diagram of the main structure of a specific embodiment of the present invention.

[0029] In the figure: 1-first lifting frame, 2-partition door, 3-guard plate, 4-second lifting frame, 5-balancing plate, 6-first pull rope, 7-second pull rope, 8-protective shell, 9-first through hole, 10-first guide wheel, 11-second guide wheel, 12-pull plate, 13-connecting plate, 14-fixed frame, 15-first top plate, 16-second top plate, 17-guide rod, 18-second through hole, 19-lifting plate, 20-first connecting block, 21-stabilizing plate, 22-third guide wheel, 23-second connecting block, 24-winch, 25-empty slot, 26-base, 27-insertion rod, 28-limiting block, 29-weight sensor, 30-connecting piece, 31-movable plate, 32-positioning column, 33-bottom plate, 34-vertical portion, 35-horizontal portion, 36-inclined portion, 37-wire rope, 38-first plate body, 39-second plate body. DETAILED DESCRIPTION

[0030] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0031] Example 1: A storage cargo lifting device, such as Figure 1 As shown, it includes a first lifting frame 1, a second lifting frame 4, a balancing connection component and a center of gravity detection component. The second lifting frame 4 is located on the outside of the first lifting frame 1. The balancing connection component is installed on the top of the second lifting frame 4, and the balancing connection component is connected to the first lifting frame 1 and the second lifting frame 4 respectively. The center of gravity detection component is arranged in the empty slot 25 between the bottom of the first lifting frame 1 and the second lifting frame 4. The center of gravity detection component can monitor the center of gravity state of the first lifting frame 1 in real time, and feed back the obtained center of gravity state information of the first lifting frame 1 to the balancing connection component. The balancing connection component performs a lifting operation on the side of the first lifting frame 1 where the center of gravity is offset based on the received information.

[0032] In this specific embodiment, the second lifting frame 4 specifically adopts the following structure: the second lifting frame 4 is composed of a base plate and a cover plate. The base plate and the cover plate are both designed as rectangular structures, the cover plate is located directly above the base plate, and the base plate and the cover plate are arranged parallel to each other. Between the base plate and the cover plate, a column is installed. The column is placed vertically. In this embodiment, a total of four columns are provided, and these four columns are respectively located at the four corners of the cover plate. The upper end of the column is fixedly connected to the corner of the bottom of the cover plate by welding; the lower end of the column is also fixedly connected to the corner corresponding to the top of the base plate by welding. Two first through holes 9 that pass through the cover plate are provided on the cover plate, and the two first through holes 9 are symmetrically distributed along the transverse center plane of the cover plate.

[0033] like Figure 3As shown, in this specific embodiment, the first lifting frame 1 specifically adopts the following structure: the first lifting frame 1 includes a bottom plate 33, which is also rectangular. The bottom plate 33 has a pair of parallel and longer side edges, and a pair of parallel and shorter side edges, and the longer side edges are perpendicular to the shorter side edges. A guard plate 3 is installed on the two shorter side edges of the bottom plate 33 along the width direction. The guard plate 3 is composed of a vertical portion 34 at the bottom, a horizontal portion 35 at the top, and an inclined portion 36 in the middle that is inclined toward the inner side of the bottom plate 33. These three parts are manufactured using an integrated processing and molding process. The bottom of the vertical portion 34 at the bottom and the side edge of the bottom plate 33 are fixed together by welding. A second through hole 18 is provided on the inclined portion 36 that passes through the inclined portion 36. Partition doors 2 are provided on both sides of the bottom plate 33 along the length direction. The partition door 2 is composed of two door panels, which are symmetrically arranged, and the outer sides of the two door panels are respectively hingedly connected to the vertical parts 34 of the guard plates 3 on both sides of the bottom plate 33 through hinges.

[0034] In this embodiment, the balancing connection assembly employs the following structure: It includes a balancing plate 5, located above the second lifting frame 4. The balancing plate 5 is also rectangular, with its long and short sides aligned with the cover plate of the second lifting frame 4. A second pull rope 7 is connected to the top of the balancing plate 5. The lower end of the second pull rope 7 is bolted to the top of the balancing plate 5; the upper end of the second pull rope 7 is fixedly connected to the lifting device. Two second pull ropes 7 are provided, symmetrically distributed along the transverse center plane of the balancing plate 5.

[0035] Four first pull ropes 6 connect the balance board 5 to the second lifting frame 4. These ropes are evenly distributed at the four corners of the balance board 5. The upper ends of the first pull ropes 6 are bolted to the bottom of the balance board 5; the lower ends are secured to the corresponding corners of the cover plate of the second lifting frame 4 via eyelets. A protective shell 8 is welded to the bottom of the balance board 5, located in the middle of the balance board 5. The interior of the protective shell 8 is hollow, with an opening at the bottom.

[0036] like Figure 4 、 5 As shown, the balancing connection assembly also includes a lifting assembly, which is located inside the protective shell 8. There are two lifting assemblies in total, which are symmetrically and staggeredly installed inside the protective shell 8. Through these two lifting assemblies, the two side guard plates 3 of the first lifting frame 1 can be lifted respectively.

[0037] The lifting assembly includes a winch 24, a third guide wheel 22, a first guide wheel 10, a second guide wheel 11, and a lifting plate 19. The winch 24 is bolted to the interior of the protective shell 8; the third guide wheel 22 is also bolted to the interior of the protective shell 8. The first guide wheel 10 is bolted to the bottom surface of the horizontal portion 35 of the guard plate 3, and its position corresponds to the second through-hole 18 in the inclined portion 36 of the guard plate 3. The second guide wheel 11 is bolted to the outer side of the inclined portion 36 of the guard plate 3, and its position also corresponds to the second through-hole 18 in the inclined portion 36 of the guard plate 3. The output end of the winch 24 is connected to a wire rope 37. The end of the wire rope 37 passes around the third guide wheel 22, then through the first through-hole 9, then around the first guide wheel 10, through the second through-hole 18, and finally around the second guide wheel 11, where it is fixed to the top of the lifting plate 19 via a lifting eye. The lifting plate 19 is located outside the vertical portion 34 of the guard plate 3, and a pull plate 12 is provided below the lifting plate 19. Connecting plates 13 are welded to the top and bottom of the pull plate 12, and the vertical portion 34 of the guard plate 3 can be pulled by the pull plate 12.

[0038] A stabilizing plate 21 is welded to the outer side of the vertical portion 34 of the guard plate 3. The stabilizing plate 21 is arranged horizontally and is located between the lifting plate 19 and the pulling plate 12. A first connecting block 20 is provided on the stabilizing plate 21, which passes through the stabilizing plate 21. The first connecting block 20 can slide up and down along the vertical direction inside the stabilizing plate 21. The first connecting block 20 is placed vertically, and there are a total of several first connecting blocks 20. These first connecting blocks 20 are parallel to each other and are distributed at equal intervals. The top of the first connecting block 20 is welded to the bottom of the lifting plate 19, and the bottom of the first connecting block 20 is welded to the connecting plate 13 at the top of the pulling plate 12.

[0039] like Figure 2As shown, a fixed frame 14 is provided below the pull plate 12. The fixed frame 14 is a hollow rectangular frame structure, and the fixed frame 14 is welded to the outer side of the vertical portion 34 of the guard plate 3. Inside the fixed frame 14, a first top plate 15 is provided, and the first top plate 15 is placed horizontally. Above the first top plate 15, a second connecting block 23 is provided, and the second connecting block 23 is placed vertically. There are a total of several second connecting blocks 23, which are parallel to each other and distributed at equal intervals. The bottom of the second connecting block 23 is welded to the upper surface of the first top plate 15, and the top of the second connecting block 23 passes through the top of the fixed frame 14 and is welded to the connecting plate 13 at the bottom of the pull plate 12. The second connecting block 23 can move up and down synchronously with the first top plate 15 in the vertical direction within the fixed frame 14. Guide rods 17 are provided on both sides of the first top plate 15, and the guide rods 17 are placed vertically. One end of the guide rod 17 is welded to the upper surface of the first top plate 15 , and the other end of the guide rod 17 passes through the top of the fixed frame 14 . The guide rod 17 can move up and down in the vertical direction within the fixed frame 14 .

[0040] The second top plate 16 is welded to the bottom of the fixed frame 14. The second top plate 16 is L-shaped and consists of a first plate 38 and a second plate 39 that are perpendicular to each other. The first plate 38 is welded to the bottom of the bottom plate 33, and the second plate 39 is welded to the vertical portion 34 of the guard plate 3.

[0041] like Figure 6 As shown, in this embodiment, the center of gravity detection assembly specifically employs the following structure: the center of gravity detection assembly comprises two movable plates 31, each of which is a rectangular structure and symmetrically distributed within the slot 25 along the width of the base plate 33. A base 26 is disposed between each movable plate 31 and the base plate 33. The base 26 is designed as an inverted trapezoidal structure with a larger upper surface than the lower surface. The top of the base 26 is welded to the base plate 33, and the bottom of the base 26 abuts the upper surface of the movable plate 31. A weight sensor 29 is disposed between each movable plate 31 and the second lifting frame 4. The two weight sensors 29 are symmetrically distributed within the slot 25 along the width of the base plate 33. The weight sensors 29 are bolted to the second lifting frame 4, and the detection ends of the weight sensors 29 abut the bottom of the movable plates 31, with the specific abutment position corresponding to the abutment position between the bottom of the base 26 and the upper surface of the movable plates 31.

[0042] like Figure 7As shown, a connecting member 30 is provided between the two movable plates 31. The connecting member 30 is welded to the second lifting frame 4, and the height of the connecting member 30 is flush with the movable plate 31. Positioning columns 32 are welded on both sides of the top of the connecting member 30. The axial direction of the positioning column 32 is the vertical direction, and the two positioning columns 32 pass through the two movable plates 31 respectively. The movable plate 31 can move up and down along the corresponding positioning columns 32. On the side of the two movable plates 31 away from the positioning columns 32, there is a plug rod 27 passing through the movable plate 31. The axial direction of the plug rod 27 is the vertical direction. The upper end of the plug rod 27 is fixedly connected to the first plate body 38 of the second top plate 16, and the lower end of the plug rod 27 passes through the movable plate 31 and is fixedly connected to the limit block 28. The limit block 28 can prevent the movable plate 31 from sliding off the plug rod 27.

[0043] Example 2: A method for using the warehouse cargo lifting equipment in Example 1, the specific steps are as follows:

[0044] Step 1: First, open the door 2 of the first lifting frame 1 and place the cargo on the bottom plate 33 of the first lifting frame 1. Once loaded, use the lifting equipment to lift the balance board 5 via the second pull rope 7. As the lifting equipment continues to operate, the balance board 5 rises, driven by the first pull ropes 6 connecting its four bottom corners to the four top corners of the first lifting frame 1, driving the first lifting frame 1 upwards. Simultaneously, the balance board 5, through the lifting assembly, drives the second lifting frame 4 upwards.

[0045] Because the base plate 33 of the first lifting frame 1 is generally rectangular, in actual operation, after cargo is placed on the base plate 33, the center of gravity formed by the cargo and the first lifting frame 1 often shifts along the length of the base plate 33. When this center of gravity shifts, the first lifting frame 1 transmits pressure to the two movable plates 31 below it via its base 26. These two movable plates 31 are symmetrically distributed along the width of the base plate 33 of the first lifting frame 1. When subjected to pressure, the movable plates 31 move slightly downward along the direction of the insertion rods 27 and positioning posts 32. The insertion rods 27 and positioning posts 32 not only guide the movement of the movable plates 31 but also ensure a stable and controllable movement trajectory of the movable plates 31. As the movable plates 31 move downward, they exert pressure on the corresponding weight sensors 29 below them. Due to the deviation in the overall center of gravity of the first lifting frame 1, the two movable plates 31 move downward by different distances, resulting in different pressures felt by the weight sensors 29 below the two movable plates 31.

[0046] Step 2: The two weight sensors 29 continuously and in real time monitor the pressure acting on them and, based on this data, calculate the change in the center of gravity of the first lifting frame 1. After the calculation is complete, the weight sensors 29 quickly feed back the center of gravity status information of the first lifting frame 1 to the lifting assembly, providing data for subsequent center of gravity adjustments.

[0047] As the center of gravity of the first lifting frame 1 shifts, the balance plate 5 tilts slightly due to uneven force. The first pull ropes 6 at the four corners of the balance plate 5, acting as flexible connectors 30, undergo slight elastic deformation. This elastic deformation allows the first pull ropes 6 to share the tension borne by the steel wire ropes 37 on the outer side of the guard plate 3. The four first pull ropes 6 cooperate with each other, leveraging their own flexibility to effectively buffer and reduce the sway caused by the center of gravity shift, maintaining the relative stability of the entire lifting system and preventing safety accidents caused by excessive sway.

[0048] Step 3: After the lifting component receives the center of gravity offset information fed back by the weight sensor 29, it will immediately analyze the center of gravity offset. Once it is determined that the center of gravity offset exceeds the preset safety range, the lifting component will respond quickly. The winch 24 in the lifting component starts to start and adjusts the center of gravity position of the first lifting frame 1 by accurately retracting and releasing the wire rope 37. During the adjustment process, the weight sensor 29 continuously monitors the pressure value in real time and feeds the data back to the lifting component. Based on the feedback information, the lifting component dynamically adjusts the speed and length of the winch 24 for retracting and releasing the wire rope 37 until the pressure value monitored in real time by the two weight sensors 29 reaches within the safe range. At this time, the first lifting frame 1 returns to a balanced state, and the entire lifting system can continue to perform cargo lifting operations safely and stably.

[0049] It can be seen from the above embodiments that the beneficial effect of the present invention is that, in this specific embodiment, after the cargo is placed in the first lifting frame, the first lifting frame will apply pressure to the center of gravity detection component below. The center of gravity detection component dynamically calculates the changes in the center of gravity of the cargo by monitoring the pressure data on both sides of the first lifting frame in real time, and feeds back the real-time center of gravity status information to the pulling component. The pulling component adjusts the lifting height on both sides of the first lifting frame according to the feedback information received until the pressure on the center of gravity detection component on both sides of the first lifting frame reaches a balanced state again. In summary, through this closed-loop adjustment mechanism, the present device can automatically adjust the posture of the first lifting frame when the center of gravity of the cargo shifts and causes an imbalance in the pulling force, so that the pulling force on both sides is restored to balance, thereby effectively preventing the occurrence of overload transportation and ensuring the stability and safety of the lifting process.

[0050] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A storage cargo lifting device, comprising a first lifting frame (1), characterized in that: A second lifting frame (4) is provided on the outside of the first lifting frame (1), a balancing plate (5) is provided above the second lifting frame (4), a first pull rope (6) is connected between the balancing plate (5) and the second lifting frame (4), a second pull rope (7) is fixed to the top of the balancing plate (5), a protective shell (8) is fixed to the bottom of the balancing plate (5), and two lifting assemblies are symmetrically provided inside the protective shell (8), and the two lifting assemblies can respectively adjust the heights of both sides of the first lifting frame (1); the first lifting frame (1) includes a bottom plate (3 3), a guard plate (3) is fixed on both sides of the bottom plate (33) along the width direction, the guard plate (3) includes a vertical portion (34) at the bottom, a horizontal portion (35) at the top and an inclined portion (36) in the middle inclined toward the inner side of the bottom plate (33), a first guide wheel (10) is installed on the bottom surface of the horizontal portion (35), a second through hole (18) corresponding to the position of the first guide wheel (10) is provided on the inclined portion (36), and a second guide wheel (10) corresponding to the position of the second through hole (18) is installed on the outer side surface of the inclined portion (36). 1); a third guide wheel (22) is installed inside the protective shell (8); a first through hole (9) is provided on the top of the second lifting frame (4); a lifting assembly includes a winch (24); the winch (24) is fixed inside the protective shell (8); a steel wire rope (37) is connected to the output end of the winch (24); the end of the steel wire rope (37) is passed through the third guide wheel (22), the first guide wheel (10) and the second guide wheel (11) in sequence and is fixedly connected to the top of the lifting plate (19); the lifting plate (19) is located on the protective shell (8); A pulling plate (12) is fixed to the bottom of the lifting plate (19) on the outside of the vertical portion (34) of the plate (3), and a fixing frame (14) is provided below the pulling plate (12). The fixing frame (14) is fixed to the outer side surface of the vertical portion (34) of the guard plate (3); a center of gravity detection component is provided in the empty slot (25) between the bottom of the first lifting frame (1) and the second lifting frame (4). The center of gravity detection component can monitor the center of gravity state of the first lifting frame (1) and can feed back the center of gravity state information of the first lifting frame (1) to the pulling component.

2. The storage cargo lifting equipment according to claim 1, characterized in that: Partition doors (2) are provided on both sides of the bottom plate (33) along the length direction.

3. The storage cargo lifting equipment according to claim 2, characterized in that: A first top plate (15) is provided inside the fixed frame (14), the upper surface of the first top plate (15) is fixedly connected to the bottom of the second connecting block (23), the top of the second connecting block (23) passes through the top of the fixed frame (14) and is fixedly connected to the pull plate (12), and the second connecting block (23) is placed vertically.

4. The storage cargo lifting equipment according to claim 3, characterized in that: Guide rods (17) are provided on both sides of the first top plate (15). The guide rods (17) are placed vertically, one end of the guide rods (17) is fixedly connected to the upper surface of the first top plate (15), and the other end of the guide rods (17) passes through the top of the fixed frame (14).

5. The storage cargo lifting equipment according to claim 3, characterized in that: A second top plate (16) is fixed to the bottom of the fixed frame (14), and the second top plate (16) includes a first plate body (38) and a second plate body (39) that are perpendicular to each other. The first plate body (38) is fixedly connected to the bottom of the bottom plate (33), and the second plate body (39) is fixedly connected to the vertical portion (34) of the guard plate (3).

6. The storage cargo lifting equipment according to claim 3, characterized in that: A stabilizing plate (21) is fixed to the outer side surface of the vertical portion (34) of the guard plate (3). The stabilizing plate (21) is located between the lifting plate (19) and the pulling plate (12). A first connecting block (20) is provided on the stabilizing plate (21) and passes through the stabilizing plate (21). The first connecting block (20) is placed vertically. The top of the first connecting block (20) is fixedly connected to the bottom of the lifting plate (19), and the bottom of the first connecting block (20) is fixedly connected to the pulling plate (12).

7. The storage cargo lifting equipment according to claim 5, characterized in that: The center of gravity detection component includes two movable plates (31), the two movable plates (31) are symmetrically distributed in the empty slot (25) along the width direction of the bottom plate (33), a base (26) is provided between the two movable plates (31) and the bottom plate (33), the top of the base (26) is fixedly connected to the bottom plate (33), the bottom of the base (26) is in contact with the upper surface of the movable plate (31), and a weight sensor (29) is provided between the two movable plates (31) and the second lifting frame (4), the weight sensor (29) is fixed on the second lifting frame (4), and the detection end of the weight sensor (29) is in contact with the bottom of the movable plate (31).

8. The storage cargo lifting equipment according to claim 7, characterized in that: A connecting member (30) is provided between the two movable plates (31), and the connecting member (30) is fixedly connected to the second lifting frame (4). Positioning columns (32) are fixed on both sides of the connecting member (30), and the axial direction of the positioning columns (32) is a vertical direction. The two positioning columns (32) respectively pass through the two movable plates (31). An insertion rod (27) passing through the movable plate (31) is provided on the two movable plates (31), and the axial direction of the insertion rod (27) is a vertical direction. The upper end of the insertion rod (27) is fixedly connected to the second top plate (16), and the lower end of the insertion rod (27) passes through the movable plate (31) and is fixedly connected to the limit block (28).

9. The storage cargo lifting equipment according to claim 1, characterized in that: A total of four first pull ropes (6) are provided, and the four first pull ropes (6) are evenly distributed at the four corners of the balance board (5), and the upper ends of the first pull ropes (6) are fixedly connected to the bottom of the balance board (5), and the lower ends of the first pull ropes (6) are fixedly connected to the corners corresponding to the top of the second lifting frame (4).

10. A method for using a warehouse cargo lifting device, characterized in that: The storage cargo lifting equipment as claimed in claim 1 comprises the following steps: Step 1: placing the cargo in the first lifting frame (1), and the first lifting frame (1) applies pressure to the center of gravity detection component below; Step 2: The center of gravity detection component monitors the pressure values ​​applied to the first lifting frame (1) by both sides in real time, calculates the change of the center of gravity of the first lifting frame (1), and then feeds back the center of gravity state information of the first lifting frame (1) to the lifting component; In step three, the lifting component raises or lowers the height of the corresponding side of the first lifting frame (1) based on the center of gravity state information fed back by the center of gravity detection component until the pressure exerted by both sides of the first lifting frame (1) on the center of gravity detection component is restored to balance.

Images