A vertical lifting machine

Abstract

This application discloses a vertical lifting machine, relating to the field of warehousing equipment technology. The vertical lifting machine uses a first drive mechanism to drive a movable base to move horizontally along a slide rail, enabling the extension and retraction of the forks. A second drive mechanism drives a lifting frame to move vertically up and down along the lifting machine frame, enabling the forks to rise and fall. When retrieving goods, the forks extend forward and reach under the goods, then the forks lift to lift the goods off the ground, away from the fork support rod, or away from the conveyor line. Finally, the forks retract to complete the retrieval. When unloading goods, the forks extend forward and move the goods above the storage position, then the forks move down, and the goods are received by the storage position. Finally, the forks retract to complete the unloading. Thus, from picking up and placing goods, to vertical transfer to the target location, the entire process is smooth and seamless, eliminating the need for manual handling of goods onto or off the forks, reducing the labor intensity of operators, and improving the efficiency of goods transportation and the overall operational efficiency of warehousing and logistics.

Description

Technical Field

[0001] This application relates to the field of warehousing equipment technology, and in particular to a vertical lifting machine. Background Technology

[0002] Vertical lifts are commonly used cargo transfer equipment in the warehousing and logistics field. Their core function is to vertically lift goods to a high place or lower them from a high place to a low place. They have significant advantages such as small footprint and high space utilization.

[0003] For example, Chinese patent CN202322917354.X discloses "An Intelligent Warehouse Vertical Lifting Machine," which includes a base, two pulleys, and a lifting platform. The top of the base is equipped with a transport mechanism, which includes a pallet fixedly mounted on the movable shaft of the lifting platform. A protective frame is fixedly mounted on the top outer wall of the pallet, and a linear module is fixedly mounted on the bottom outer wall of the pallet. A connecting rod is fixedly mounted on the movable shaft of the linear module, and three connecting blocks are fixedly mounted on the outer periphery of the connecting rod. This intelligent warehouse vertical lifting machine, through the action of the linear module, connecting rod, and connecting blocks, moves an auxiliary platform downwards to a certain height, causing the guide seat to fit against the ground. The inclined design of the guide seat facilitates the pushing of heavier goods along its inclined surface onto the auxiliary platform. The auxiliary platform then moves upwards via the linear module to push the goods to the top of the pallet.

[0004] However, the aforementioned system still requires manual pushing of goods along the inclined surface of the guide seat onto the auxiliary platform during the transfer process. After being lifted to the target position, the goods are then manually removed, completely lacking the function of automatic goods retrieval and placement. This not only increases the labor intensity of operators but also reduces the efficiency of goods transfer, failing to meet the operational requirements of automated warehousing. Utility Model Content

[0005] Based on this, this application provides a vertical lift that can automatically pick up and place goods, reducing the labor intensity of operators and improving the efficiency of goods transfer.

[0006] This application provides a vertical lifting machine, including a fixed base, a slide rail, a movable base, and a first drive mechanism on the fixed base. The first drive mechanism can drive the movable base to move horizontally along the slide rail. A lifting machine frame is provided on the movable base, and a lifting frame and a second drive mechanism are provided inside the lifting machine frame. The second drive mechanism can drive the lifting frame to move vertically up and down along the lifting machine frame. Forks for receiving goods are provided on the lifting frame.

[0007] In some embodiments, the first drive mechanism includes: A first motor is mounted on the movable base, and a gear is mounted on the output shaft of the first motor; A rack is mounted on the fixed base and meshes with the gear.

[0008] In some embodiments, at least one first sensor is provided at the front end and the rear end of the fixed base, respectively.

[0009] In some embodiments, the second drive mechanism includes a driven wheel, a driving wheel, a transmission belt, and a second motor. The driven wheel is disposed on the movable base, and the driving wheel and the second motor are both disposed on the top of the lifting frame, with the second motor being drive-connected to the driving wheel. The transmission belt is sleeved between the driven wheel and the driving wheel, and the transmission belt is fixedly connected to the lifting frame.

[0010] In some embodiments, the transmission belt is a synchronous belt or a chain.

[0011] In some embodiments, the lifting frame includes four vertical columns; the bottom of the lifting frame has four bottom corners and the top has four top corners, and each bottom corner and / or each top corner is provided with two rollers, the rollers being fitted and matched with the inner surface of the vertical columns.

[0012] In some embodiments, at least one second sensor is provided on the lower and upper parts of the hoist frame, respectively.

[0013] In some embodiments, at least one buffer block is provided between the movable base and the lifting frame, and one end of the buffer block is fixedly connected to the movable base.

[0014] In some embodiments, an outer frame is included, disposed on the fixed base, and the front side of the outer frame has a front opening.

[0015] In some embodiments, the flexible swinging part is an integrally molded plastic structure, silicone structure, or rubber structure.

[0016] Compared with the prior art, the technical solution provided in this application has the following advantages: The vertical lifting machine provided in this application uses a first drive mechanism to drive a movable base to move horizontally along a slide rail, enabling the extension and retraction of the forks. A second drive mechanism drives a lifting frame to move vertically up and down along the lifting machine frame, enabling the forks to rise and fall. When picking up goods, the forks extend forward and reach under the goods, then the forks lift to lift the goods off the ground, away from the fork support rod, or away from the conveyor line. Finally, the forks retract to complete the picking. When unloading goods, the forks extend forward and move the goods above the storage position, then the forks move down, and the goods are received by the storage position. Finally, the forks retract to complete the unloading. Throughout the process, the forks maintain stable support of the goods without interruption or manual intervention to switch operating states. Thus, from picking up and placing goods, to vertical transfer to the target location, the entire process is smooth and seamless, eliminating the need for manual handling of goods onto or off the forks, reducing the labor intensity of operators, and improving the efficiency of goods transportation and the overall operational efficiency of warehousing and logistics. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the vertical lifting machine provided in this application; Figure 2 The front view of the vertical lifting machine provided in this application; Figure 3 A structural schematic diagram of the vertical lifting machine provided in this application from the rear view; Figure 4 This is a schematic diagram of the vertical lifting machine provided in this application, omitting the fixed base. Figure 5 for Figure 4 Side view; Figure 6 for Figure 4 The structural diagram of the lifting frame is omitted. Figure 7 This is a structural schematic diagram of the lifting frame in the vertical lifting machine provided in this application.

[0018] Explanation of reference numerals in the attached figures: 1. Fixed base; 2. Slide rail; 3. Movable base; 4. Lifting frame; 4.1. Vertical column; 5. Lifting frame; 6. Forks; 7. First motor; 8. Rack and pinion; 9. Sensors; 10. Driven pulley; 11. Driving pulley; 12. Drive belt; 13. Second motor; 14. Casters; 15. Outer frame; 16. Second sensor; 17. Buffer block. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0020] See Figures 1 to 3 , Figure 1 This is a structural schematic diagram of the vertical lifting machine provided in this application; Figure 2 The front view of the vertical lifting machine provided in this application; Figure 3 A structural schematic diagram of the vertical lifting machine provided in this application from the rear view.

[0021] This application provides a vertical lifting machine, including a fixed base 1, a slide rail 2, a movable base 3 and a first drive mechanism on the fixed base 1. The first drive mechanism can drive the movable base 3 to move horizontally along the slide rail 2. A lifting machine frame 4 is provided on the movable base 3. A lifting frame 5 and a second drive mechanism are provided inside the lifting machine frame 4. The second drive mechanism can drive the lifting frame 5 to move vertically up and down along the lifting machine frame 4. Forks 6 for receiving goods are provided on the lifting frame 5.

[0022] In this embodiment, other structures are movably mounted on the fixed base 1. A first drive mechanism drives the movable base 3 to move horizontally along the slide rail 2, thereby extending and retracting the forks 6. Simultaneously, a second drive mechanism drives the lifting frame 5 to move vertically up and down along the lifting frame 4, thereby raising and lowering the forks 6.

[0023] When goods need to be retrieved, firstly, the first drive mechanism drives the movable base 3 to move forward along the slide rail 2, and the forks 6 extend forward and reach under the goods. Then, the second drive mechanism drives the lifting frame 5 to rise vertically along the elevator frame 4, raising the forks 6 and lifting the goods off the ground, away from the fork support rod, or away from the conveyor line. Finally, the first drive mechanism drives the movable base 3 to retract backward along the slide rail 2, and the forks 6 retract, completing the retrieval process.

[0024] When goods need to be unloaded, firstly, the second drive mechanism drives the lifting frame 5 to rise vertically along the elevator frame 4 to the height of the target storage position. Then, the first drive mechanism drives the movable base 3 to move forward along the slide rail 2, and the forks 6 extend forward to move the goods above the storage position. Next, the second drive mechanism drives the lifting frame 5 to descend vertically along the elevator frame 4, causing the forks 6 to move down and the goods to be received by the storage position. Finally, the first drive mechanism drives the movable base 3 to move backward along the slide rail 2, and the forks 6 retract, completing the unloading process.

[0025] During the above process, goods can be placed in storage boxes or on shelves. The first drive mechanism drives the horizontal movement of the moving base 3, and the second drive mechanism drives the vertical lifting of the lifting frame 5, which can be seamlessly connected. The forks 6 always maintain a stable support for the goods, without the need for interruptions or manual intervention to switch operating states. In this way, from picking up and placing goods, to vertical transfer to the target location, the entire process is smooth and continuous. There is no need for manual handling of goods onto or off the forks 6, reducing the labor intensity of operators and improving the efficiency of goods transportation and the overall operational efficiency of warehousing and logistics.

[0026] Please refer to it again. Figures 1 to 3 In some embodiments, the first drive mechanism includes a first motor 7 and a rack 8. The first motor 7 is mounted on the movable base 3, and a gear (not shown in the figure) is mounted on the output shaft of the first motor 7; the rack 8 is mounted on the fixed base 1 and meshes with the gear.

[0027] The first drive mechanism employs a transmission method where the output shaft gear of the first motor 7 meshes with the rack 8 on the fixed base 1. The meshing clearance between the gear and rack 8 is small, and the transmission ratio is constant. When the first motor 7 drives the movable base 3 to move back and forth, it can precisely control the horizontal movement distance and stopping position of the movable base 3 along the slide rail 2. This allows the forks 6 on the lifting frame 5 to be precisely aligned with the bottom of the goods or the target storage position, improving the accuracy of the picking and placing actions.

[0028] Please refer to it again. Figures 1 to 3 In some embodiments, at least one first sensor 9 is provided at the front end and the rear end of the fixed base 1, respectively.

[0029] Specifically, the first sensor 9 is used to detect the position of the movable base 3 in real time. When the movable base 3 carrying the forks 6 approaches the front and rear travel limits of the fixed base 1, the first sensor 9 will trigger a signal to limit the movement range of the movable base 3. This effectively avoids collisions between the movable base 3 and the two ends of the fixed base 1, the outer frame 15, or other storage structures due to overtravel. It protects the movable base 3, the slide rail 2, and the first drive mechanism from impact damage, and also prevents the goods on the forks 6 from shaking, tilting, or even falling off due to collisions.

[0030] Meanwhile, the position signal detected by the first sensor 9 can also be fed back to the control system, allowing the mobile base 3 to precisely switch between the picking position, the placing position, and the travel limit. For example, when picking up goods, the mobile base 3 can accurately stop in front of the goods with the assistance of the first sensor 9, ensuring that the forks 6 can smoothly extend under the goods; when placing goods, it can also accurately align with the target storage position, avoiding misplacement of goods due to positional deviation, and improving the overall operational accuracy.

[0031] Furthermore, even if there is a deviation in the control command or abnormal driving of the first motor 7 during operation, the first sensor 9 can respond quickly, cut off the power or reverse the adjustment, and avoid safety accidents caused by untimely manual intervention.

[0032] Furthermore, to improve detection accuracy, multiple first sensors 9 can be set at both the front and rear ends, spaced apart or arranged in an array to cover the front or rear of the mobile base 3. By capturing position signals through cross-detection of multiple first sensors 9, the problem of missed or false detections by a single first sensor 9 is avoided, ensuring more accurate position detection of the mobile base 3.

[0033] Please see Figures 4 to 6 , Figure 4 This is a schematic diagram of the vertical lifting machine provided in this application, omitting the fixed base. Figure 5 for Figure 4 Side view; Figure 6 for Figure 4 The structural schematic diagram of the lifting frame is omitted. In some embodiments, the second drive mechanism includes a driven wheel 10, a driving wheel 11, a transmission belt 12, and a second motor 13. The driven wheel 10 is disposed on the movable base 3, and the driving wheel 11 and the second motor 13 are both disposed on the top of the lifting frame 4, and the second motor 13 is connected to the driving wheel 11 in a transmission manner. The transmission belt 12 is sleeved between the driven wheel 10 and the driving wheel 11, and the transmission belt 12 is fixedly connected to the lifting frame 5.

[0034] Driven by the second motor 13, the drive wheel 11 drives the transmission belt 12 and the driven wheel 10 to rotate, thereby controlling the lifting height of the lifting frame 5 and enabling the lifting frame 5 to rise, fall and stop quickly. This allows the forks 6 to be precisely aligned with storage locations or cargo receiving surfaces of different heights, improving the accuracy of cargo handling height positioning.

[0035] It is understood that, to ensure the stability of the lifting frame 5 during its ascent and descent, this embodiment of the application can provide two transmission groups. Each transmission group includes a driven wheel 10, a driving wheel 11, and a transmission belt 12. The two transmission groups are located on both sides of the lifting frame 5, respectively. Driven by the second motor 13, the transmission groups on both sides can simultaneously drive the lifting frame 5 to rise and fall, further improving the displacement stability of the lifting frame 5. If necessary, for example, if the size of the lifting frame 5 is increased, multiple transmission groups can also be provided to transmit power from multiple points, thereby improving the displacement stability of the lifting frame 5.

[0036] In some embodiments, the transmission belt 12 is a synchronous belt or a chain.

[0037] Specifically, the synchronous belt drives through toothed meshing, and the chain drives through the meshing of chain links and wheel teeth. Both can achieve zero-slip power transmission between the driving wheel 11 and the driven wheel 10. With the precise speed adjustment of the second motor 13, the lifting height of the lifting frame 5 can be precisely controlled by controlling the number of rotations of the synchronous belt or chain, ensuring that the forks 6 can be accurately aligned with storage positions or cargo receiving surfaces of different heights.

[0038] Synchronous belts combine elastic cushioning with rigid transmission characteristics, offering moderate load-bearing capacity and low operating noise and vibration, making them suitable for carrying light and medium-sized goods. Their cushioning and shock absorption capabilities can absorb the power impact during the start and stop of the second motor 13, preventing rapid raising and lowering of the lifting frame 5 and effectively protecting fragile and delicate goods on the forks 6. They are suitable for scenarios requiring high operational stability.

[0039] The chain has high structural strength and excellent wear resistance, making it suitable for bearing heavy goods. When the fork 6 bears a large load, the chain can stably transmit the power of the second motor 13 without causing tensile deformation or transmission failure due to excessive load, ensuring that the lifting frame 5 rises and falls smoothly along the hoist frame 4, making it suitable for heavy-duty warehousing and high-frequency heavy-load transfer scenarios.

[0040] Users can flexibly choose the type of transmission belt 12 according to the actual weight of the goods and the working scenario to broaden the application range of the vertical elevator.

[0041] Please see Figure 6 Please refer to the following: Figure 7 , Figure 7 This is a schematic diagram of the lifting frame in the vertical lifting machine provided in this application. In some embodiments, the lifting frame 4 includes four vertical columns 4.1; the lifting frame 5 has four bottom corners and four top corners, and each bottom corner and / or each top corner is provided with two rollers 14, which fit and match the inner surface of the vertical columns 4.1.

[0042] The four vertical columns 4.1 of the lifting frame 4 form a regular rectangular guide space. Two rollers 14 are installed at each bottom corner and / or each top corner of the lifting frame 5, and the rollers 14 are tightly fitted to the inner surface of the vertical columns 4.1. That is, two rollers 14 can be installed at each of the four bottom corners, or at each of the four top corners, or at both the four bottom and top corners. In this way, the two rollers 14 located at the same corner (top or bottom corner) can form a bidirectional constraint along the horizontal direction of the inner surface of the vertical columns 4.1, simultaneously limiting the lateral offset and torsional tendency of the lifting frame 5 during vertical lifting, and preventing tilting and swaying caused by cargo eccentricity, uneven load, or changes in lifting speed. This ensures that the forks 6 always maintain a horizontal posture and prevents cargo from slipping.

[0043] Secondly, the roller 14 and the inner surface of the vertical column 4.1 use rolling friction to reduce the coefficient of friction, which effectively reduces the running resistance of the lifting frame 5 during lifting and lowering, and reduces the power loss of the driven roller 10, the driving roller 11, and the transmission belt 12, making the lifting action smoother and more efficient. At the same time, rolling friction can avoid the severe wear caused by sliding friction, protect the inner surface of the vertical column 4.1 and the corner structure of the lifting frame 5, and extend the service life of both; and there is no obvious sliding friction noise during operation, making the equipment more suitable for storage environments with high noise control requirements.

[0044] Furthermore, when the lifting frame 5 tilts slightly due to cargo misalignment or uneven load, the two rollers 14 at each bottom corner and / or top corner can automatically compensate for the offset through rolling contact. Even with a slight tilt, the double rollers 14 can still maintain effective contact with the inner surface of the vertical column 4.1, preventing jamming caused by one-sided detachment or compression. This improves the vertical lifting machine's tolerance to minor assembly errors and load fluctuations, ensuring smooth lifting of the lifting frame 5 along the entire lifting stroke of the vertical column 4.1 and reducing equipment downtime or component damage caused by jamming.

[0045] Please refer to it again. Figures 4 to 6 In some embodiments, at least one second sensor 16 is provided on the lower and upper parts of the hoist frame 4, respectively.

[0046] In this embodiment, the second sensor 16 is used to detect the position of the lifting frame 5 in real time. When the lifting frame 5 approaches the lifting limit of the hoist frame 4, the second sensor 16 will immediately trigger a control signal to limit the travel boundary of the lifting frame 5. This effectively avoids hard collisions between the lifting frame 5 and the top or bottom of the hoist frame 4, and also prevents goods from shaking, falling, or being damaged due to the collision.

[0047] Meanwhile, the second sensor 16, in conjunction with the precise power transmission of the second drive mechanism, allows the lifting frame 5 to stop precisely at a preset height. This avoids lifting height deviations and ensures that the forks 6 can smoothly align with the target storage position or cargo receiving surface, improving the accuracy of cargo handling height positioning.

[0048] Furthermore, even if there is a deviation in the control command or abnormal driving of the second motor 13 during operation, the second sensor 16 can respond quickly, cut off the power or reverse the adjustment, and avoid safety accidents caused by untimely manual intervention.

[0049] Furthermore, to improve detection accuracy, multiple second sensors 16 can be installed on the lower and upper parts of the lifting frame 5, respectively. These second sensors 16 can be spaced apart or arranged in an array to cover the lower and upper parts of the lifting frame 5. By capturing position signals through cross-detection of multiple second sensors 16, the problem of missed detection or false detection by a single second sensor 16 is avoided, ensuring more accurate position detection of the lifting frame 5.

[0050] Please see Figure 2 , Figure 3 and Figure 6 In some embodiments, at least one buffer block 17 is provided between the movable base 3 and the lifting frame 5, and one end of the buffer block 17 is fixedly connected to the movable base 3.

[0051] A buffer block 17 is positioned between the movable base 3 and the lifting frame 5. When the lifting frame 5 descends to the bottom of its stroke under the drive of the second drive mechanism, the buffer block 17 can absorb the impact energy through its own elastic deformation, preventing a hard collision between the lifting frame 5 and the movable base 3. This effectively protects the bottom corner structure of the lifting frame 5 and the bearing surface of the movable base 3, while also preventing the goods on the forks 6 from shaking, tilting, or being damaged due to severe impact, thus improving the safety of goods transfer.

[0052] In this embodiment, the number of buffer blocks 17 can be one, located at the center of the movable base 3. Alternatively, multiple buffer blocks 17 can be arranged evenly or in an array on the movable base 3. If the buffer block 17 is a single block located at the center of the movable base 3, it can provide precise buffering for the center of gravity of the lifting frame 5, suitable for transporting light and medium-sized goods, with a simple structure and low cost. If the buffer blocks 17 are multiple and evenly or in an array on the movable base 3, they can evenly distribute the impact force of the descending lifting frame 5, forks 6, and goods to multiple stress points on the movable base 3, avoiding localized stress concentration. When the forks 6 bear heavy goods or eccentric loads, the evenly arranged buffer blocks 17 ensure stable contact and balanced force distribution of the lifting frame 5, preventing deformation of the movable base 3 or the lifting frame 5 due to localized impacts, thus improving the structural stability and service life of the vertical lifting machine.

[0053] Please refer to it again. Figures 1 to 3 In some embodiments, an outer frame 15 is provided on the fixed base 1, and the front side of the outer frame 15 is provided with a front opening.

[0054] Specifically, the outer frame 15 is fixed to the fixed base 1, forming a closed protection for core components such as the rear of the movable base 3, the rear of the lifting frame 4, and the second drive mechanism. This effectively blocks external interference from the storage environment, such as dust, debris, and collisions with handling tools, preventing component wear or malfunction. Simultaneously, the front opening of the outer frame 15 precisely corresponds to the extension direction of the forks 6, ensuring that the horizontal movement and lifting / lowering actions of the forks 6 when picking up and placing goods are not obstructed, protecting the internal mechanisms without affecting the goods handling process.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A vertical lifting machine, comprising a fixed base (1), characterized in that, The fixed base (1) is provided with a slide rail (2), a movable base (3) and a first drive mechanism. The first drive mechanism can drive the movable base (3) to move horizontally along the slide rail (2). The movable base (3) is provided with a lifting frame (4). The lifting frame (4) is provided with a lifting frame (5) and a second drive mechanism. The second drive mechanism can drive the lifting frame (5) to move vertically along the lifting frame (4). The lifting frame (5) is provided with forks (6) for receiving goods.

2. The vertical lifting machine according to claim 1, characterized in that, The first driving mechanism includes: The first motor (7) is mounted on the movable base (3), and a gear is mounted on the output shaft of the first motor (7); A rack (8) is disposed on the fixed base (1) and meshes with the gear.

3. The vertical lifting machine according to claim 1, characterized in that, At least one first sensor (9) is provided at the front end and the rear end of the fixed base (1).

4. The vertical lifting machine according to claim 1, characterized in that, The second drive mechanism includes a driven wheel (10), a driving wheel (11), a transmission belt (12), and a second motor (13). The driven wheel (10) is mounted on the movable base (3). The driving wheel (11) and the second motor (13) are both mounted on the top of the hoist frame (4), and the second motor (13) is connected to the driving wheel (11) in a transmission connection. The transmission belt (12) is sleeved between the driven wheel (10) and the driving wheel (11), and the transmission belt (12) is fixedly connected to the lifting frame (5).

5. The vertical lifting machine according to claim 4, characterized in that, The transmission belt (12) is a synchronous belt or a chain.

6. The vertical lifting machine according to claim 1, characterized in that, The lifting frame (4) includes four vertical columns (4.1); the lifting frame (5) has four bottom corners and four top corners, and each bottom corner and / or each top corner is provided with two wheels (14), which fit and match the inner side of the vertical column (4.1).

7. The vertical lifting machine according to claim 1, characterized in that, At least one second sensor (16) is provided on the lower and upper parts of the hoist frame (4).

8. The vertical lifting machine according to claim 1, characterized in that, At least one buffer block (17) is provided between the movable base (3) and the lifting frame (5), and one end of the buffer block (17) is fixedly connected to the movable base (3).

9. The vertical lifting machine according to claim 1, characterized in that, It includes an outer frame (15) disposed on the fixed base (1), and the front side of the outer frame (15) is provided with a front opening.

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