A sleeve oil cylinder type logistics transportation lifting platform

Abstract

The utility model belongs to the field of logistics equipment, especially relates to a sleeve oil cylinder formula logistics transportation lifting platform, including movable frame, installation column, sliding block, lifting platform body and oil cylinder one etc. Two installation columns are installed on the movable frame along the horizontal distribution of left and right direction, the inside of each installation column is provided with a sliding block, the lifting platform body is installed between two sliding blocks, and each installation column is provided with an oil cylinder one. Through setting self -locking assembly, can automatically lock the gear after the lifting platform body reaches the specified height, makes it keep the meshing state with rack, thereby realizes the mechanical locking of lifting platform body, even in the case of oil cylinder one and oil cylinder two failure, piston rod accidental retraction, can also ensure that the lifting platform body keeps at the set height stably, effectively prevents the sudden drop of lifting platform body because of hydraulic system failure, significantly improves the safety and reliability of equipment operation.

Description

Technical Field

[0001] This utility model belongs to the field of logistics equipment, and in particular relates to a sleeve cylinder type logistics transportation lifting platform. Background Technology

[0002] The telescopic hydraulic cylinder type logistics transport lifting platform is a logistics equipment that uses multi-stage telescopic hydraulic telescopic cylinders to achieve lifting functions. It is mainly used for vertical transfer, loading, unloading, or docking operations of goods between different heights. It is widely used in warehouses, logistics centers, factory workshops, truck loading and unloading areas, etc., and features compact structure, strong load-bearing capacity, smooth lifting, and simple operation.

[0003] However, in actual use, the hydraulic cylinders of the telescopic cylinder-type logistics transport lifting platform may experience malfunctions such as internal leakage, seal failure, or pipeline rupture. When these abnormalities occur, the piston rod of the cylinder may suddenly retract due to pressure instability, causing the lifting platform to descend rapidly without warning, posing a significant safety hazard. This could not only damage the goods but also pose a serious threat to the operators and the surrounding environment.

[0004] Therefore, there is a particular need for a sleeve-type hydraulic cylinder-type logistics transport lifting platform to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the hydraulic system of the sleeve cylinder type logistics transport lifting platform, where the piston rod will suddenly retract and cause the platform to drop rapidly when the cylinder fails, which poses safety hazards such as damage to goods, injury to personnel and threat to the surrounding environment, this utility model provides a sleeve cylinder type logistics transport lifting platform.

[0006] This utility model is achieved through the following technical means: a sleeve-type hydraulic cylinder logistics transport lifting platform, including a movable frame, mounting columns, sliders, lifting platform body, hydraulic cylinder one, hydraulic cylinder two, lifting plate one, lifting plate two, self-locking component, and control box. Two mounting columns are horizontally distributed and installed on the movable frame in the left-right direction. A slider is slidably installed inside each mounting column. The lifting platform body is installed between the two sliders. A hydraulic cylinder one is installed on each mounting column. A lifting plate one is fixedly connected to the end of the piston rod of each hydraulic cylinder one. A hydraulic cylinder two is installed on each lifting plate one. A lifting plate two is fixedly connected to the end of the piston rod of each hydraulic cylinder two. The lifting plate two fits tightly against the corresponding lifting plate one, and the two are fixedly connected. One end of the lifting plate two is fixedly connected to the corresponding slider. The control box is installed on one side of one of the mounting columns. Both hydraulic cylinder one and hydraulic cylinder two are electrically connected to the control box. The self-locking component is set between the two mounting columns and the lifting platform body.

[0007] Preferably, the self-locking assembly includes a rack, mounting blocks, gears, connecting plates, sliding plates, locking rods, fixing plates, springs, wedge block one, wedge block two, and an electric cylinder. Each mounting post has two racks fixedly connected in parallel. Each slider has two mounting blocks mounted in parallel on one side. Each mounting block has a rotatable gear positioned between two corresponding racks and meshing with them. Each gear has two connecting plates fixedly connected to it, both of which simultaneously avoid the corresponding racks. Each connecting plate has multiple slots evenly distributed along its center on the side away from the gear. Each mounting block has two sliding plates slidably arranged in parallel. Two slide plates are distributed on both sides of the corresponding gear. Each slide plate has multiple locking rods evenly distributed along its center fixed on the side closest to the gear. The locking rods are aligned with the corresponding locking slots and are compatible with the locking slots. Two symmetrically distributed fixing plates are fixed on each mounting block. A spring is fixed between the slide plate and the corresponding fixing plate. An electric cylinder is installed on the upper part of each mounting block and is electrically connected to the control box. A wedge block one is fixed on the upper part of each slide plate. A wedge block two is fixed on the piston rod of each electric cylinder. The wedge block two is located above the two corresponding wedge blocks one and has two inclined surfaces. These two inclined surfaces contact the inclined surfaces of the two wedge blocks one respectively.

[0008] Preferably, it also includes an inclined plate, which is rotatably mounted on the upper side of the movable frame and its surface is covered with an anti-slip pad.

[0009] Preferably, the device also includes guide bars, with two guide bars fixedly connected to each side of the two mounting posts that are close to each other. The slider is slidably connected to the corresponding two guide bars, and the top surface of the guide bars is flush with the highest point of the mounting posts.

[0010] Preferably, the device also includes support feet and fixing nuts. Each of the multiple corners of the movable frame is provided with a support foot by thread, and the bottom surface of each support foot is engraved. Each support foot is provided with a fixing nut by thread, and the fixing nut is located on top of the movable frame.

[0011] Preferably, it also includes guardrails, with multiple guardrails of different sizes fixed to the top of the lifting platform body.

[0012] Beneficial effects: 1. By setting a self-locking component, the gear can be automatically locked after the lifting platform body reaches the specified height, so that it remains engaged with the rack, thereby achieving mechanical locking of the lifting platform body. Even if the oil cylinder fails or the piston rod retracts unexpectedly, it can ensure that the lifting platform body is stably maintained at the set height, effectively preventing the lifting platform body from suddenly falling due to hydraulic system failure, and significantly improving the safety and reliability of equipment operation.

[0013] 2. The combination of support feet and fixing nuts allows the lifting platform to achieve stable support according to the ground conditions on site. This not only enhances the adaptability of the equipment but also further improves the stability and safety during operation, avoiding tilting or shaking caused by uneven ground. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a partial sectional view of the mounting column component of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, including cylinder one, cylinder two, and lifting plate one.

[0017] Figure 4 This is a partial cross-sectional view of the lifting plate one and lifting plate two components of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the gear, connecting plate, and sliding plate components of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the connecting plate, slot, and slide plate components of this utility model.

[0020] Figure 7 This is a three-dimensional structural diagram of the movable frame, inclined plate, and mounting column of this utility model.

[0021] Reference numerals: 1. Moving frame; 101. Inclined plate; 2. Mounting column; 3. Guide bar; 4. Slider; 5. Lifting platform body; 6. Hydraulic cylinder one; 61. Hydraulic cylinder two; 7. Lifting plate one; 71. Lifting plate two; 8. Rack; 9. Mounting block; 10. Gear; 1001. Connecting plate; 1002. Slot; 11. Slide plate; 111. Locking rod; 12. Fixing plate; 13. Spring; 14. Wedge block one; 15. Wedge block two; 16. Electric cylinder; 17. Support leg; 171. Fixing nut; 18. Guardrail; 19. Control box. Detailed Implementation

[0022] Example: A sleeve-type hydraulic cylinder logistics transport lifting platform, such as Figures 1-7As shown, the system includes a movable frame 1, an inclined plate 101, mounting columns 2, guide bars 3, sliders 4, a lifting platform body 5, hydraulic cylinder 1 6, hydraulic cylinder 2 61, lifting plate 1 7, lifting plate 2 71, a self-locking assembly, a guardrail 18, and a control box 19. The inclined plate 101 is rotatably mounted on the upper rear side of the movable frame 1, and its surface is covered with an anti-slip pad. Two mounting columns 2 are horizontally distributed and bolted to the movable frame 1 in the left-right direction. Each mounting column 2 has a slider 4 slidably mounted inside it. Two guide bars 3 are fixedly connected to the sides of the two mounting columns 2 that are close to each other. The sliders 4 are slidably connected to the corresponding two guide bars 3, and the top surface of the guide bars 3 is flush with the highest point of the mounting column 2, providing stable and continuous guidance for the sliders 4. The lifting platform body 5 is bolted to the two guide bars 101. Between blocks 4, each mounting column 2 is bolted with a hydraulic cylinder 6. The piston rod of each hydraulic cylinder 6 is fixedly connected to a lifting plate 7. Each lifting plate 7 is bolted with a hydraulic cylinder 61. The piston rod of each hydraulic cylinder 61 is fixedly connected to a lifting plate 71. The lifting plate 71 fits tightly against the corresponding lifting plate 7, and the two are fixedly connected. The lower end of the lifting plate 71 is fixedly connected to the corresponding slider 4. The top of the lifting platform body 5 is fixedly connected with four guardrails 18 of different sizes to improve operational safety. The control box 19 is bolted to the front side of the left mounting column 2. Both hydraulic cylinders 6 and 61 are electrically connected to the control box 19. The self-locking component is set between the two mounting columns 2 and the lifting platform body 5.

[0023] like Figure 2 , Figure 5 and Figure 6As shown, the self-locking assembly includes a rack 8, a mounting block 9, a gear 10, a connecting plate 1001, a sliding plate 11, a locking rod 111, a fixing plate 12, a spring 13, a wedge block 14, a wedge block 2 15, and an electric cylinder 16. Two racks 8 are fixedly connected internally to each mounting post 2. Two mounting blocks 9 are bolted to the front of each slider 4. A gear 10 is rotatably mounted on each mounting block 9, located between the corresponding two racks 8 and meshing with them. Two connecting plates 1001 are fixedly connected to each gear 10, simultaneously avoiding the corresponding two racks 8 to prevent interference with the normal meshing of the gear 10 and the racks 8. Each connecting plate 1001 has six slots 1002 evenly distributed along its center on the side away from the gear 10. Two sliding plates 11 are slidably mounted on each mounting block 9, distributed side-by-side. On the left and right sides of 10, each slide 11 is fixedly connected to six evenly distributed locking rods 111 on the side near the gear 10. The locking rods 111 are aligned with the corresponding locking slots 1002 and are compatible with the locking slots 1002. Two symmetrically distributed fixing plates 12 are fixedly connected to each mounting block 9. A spring 13 is fixedly connected between the slide 11 and the corresponding fixing plate 12 to provide a reset force for the slide 11. An electric cylinder 16 is bolted to the upper part of each mounting block 9. The electric cylinder 16 is electrically connected to the control box 19. A wedge block 14 is fixedly connected to the upper part of each slide 11. A wedge block 2 15 is fixedly connected to the piston rod of each electric cylinder 16. The wedge block 2 15 is located above the two corresponding wedge blocks 14 and has two inclined surfaces. These two inclined surfaces contact the inclined surfaces of the two wedge blocks 14 respectively, so that the wedge block 2 15 can squeeze the two wedge blocks 14 at the same time.

[0024] like Figure 1 As shown, it also includes support feet 17 and fixing nuts 171. Each of the four corners of the movable frame 1 is provided with a support foot 17 by thread, and the bottom surface of each support foot 17 is textured to enhance the ground friction. Each support foot 17 is provided with a fixing nut 171 by thread, and the fixing nut 171 is located above the movable frame 1.

[0025] In the initial state, the bottom surface of the support leg 17 is higher than the bottom surface of the movable frame 1. At this time, the movable frame 1 is in direct contact with the ground, and the lifting platform can be moved to the desired position at will.

[0026] After the lifting platform moves to the target location, the staff rotates the support leg 17 clockwise in sequence to move it downward until it touches the ground. As the support leg 17 descends, the mobile frame 1 is gradually lifted off the ground and is in a suspended state. Then, the fixing nut 171 is tightened clockwise until it is close to the surface of the mobile frame 1, thus completing the height adjustment and locking of the support leg 17 and realizing the overall stability and fixation of the lifting platform.

[0027] Then, the control box 19 synchronously starts the first cylinder 6 and the second cylinder 61, and controls their piston rods to extend upward, driving the first lifting plate 7 and the second lifting plate 71 to move upward, thereby pushing the slider 4 to rise smoothly along the guide bar 3, and finally driving the lifting platform body 5 to rise to the specified height. When the lifting platform body 5 reaches the target height, the first cylinder 6 and the second cylinder 61 are immediately shut off.

[0028] Then start the electric cylinder 16, control its piston rod to extend downward, drive the second wedge block 15 downward, the two inclined surfaces of the second wedge block 15 press the first wedge block 14 on both sides respectively, causing the two slide plates 11 to move inward, so that the locking rod 111 is accurately inserted into the slot 1002 on the connecting plate 1001, thereby locking the gear 10 and realizing the mechanical self-locking function of the lifting platform body 5.

[0029] During the entire use process, even if hydraulic leakage or pipeline rupture occurs in cylinder 6 or cylinder 61, causing the piston rod to retract unexpectedly, the gear 10 is locked by the slide plate 11 and cannot rotate in reverse. It continues to maintain the meshing state with the rack 8. Therefore, the lifting platform body 5 can still be stably maintained at the set height, effectively preventing the lifting platform body 5 from falling suddenly and ensuring operational safety.

[0030] After the loading and unloading operation is completed, the electric cylinder 16 is started in reverse to release the pressure of the slide plate 11. Under the action of the spring 13, the slide plate 11 automatically resets, causing the locking rod 111 to disengage and releasing the lock on the gear 10. Then, the hydraulic cylinders 6 and 61 are started again to control their piston rods to retract downwards, driving the lifting plate 7, lifting plate 71 and slider 4 to move downwards, so that the lifting platform body 5 can smoothly fall back to the initial position. Finally, the hydraulic cylinders 6 and 61 are closed to complete the entire lifting operation process.

Claims

1. A sleeve-type hydraulic cylinder-based logistics transport lifting platform, characterized in that, The system includes a movable frame (1), mounting columns (2), sliders (4), a lifting platform body (5), hydraulic cylinder one (6), hydraulic cylinder two (61), lifting plate one (7), lifting plate two (71), a self-locking assembly, and a control box (19). Two mounting columns (2) are horizontally distributed and installed on the movable frame (1) in the left-right direction. Each mounting column (2) has a slider (4) slidably installed inside. The lifting platform body (5) is installed between the two sliders (4). Each mounting column (2) has a hydraulic cylinder one (6) installed on it. The piston rod end of each hydraulic cylinder one (6) is fixedly connected to a lifting plate. Plate 1 (7), each lifting plate 1 (7) is equipped with a hydraulic cylinder 2 (61), the piston rod end of each hydraulic cylinder 2 (61) is fixedly connected to a lifting plate 2 (71), the lifting plate 2 (71) is tightly fitted to the corresponding lifting plate 1 (7), the two are fixedly connected, and one end of the lifting plate 2 (71) is fixedly connected to the corresponding slider (4). The control box (19) is installed on one side of one of the mounting columns (2), and both hydraulic cylinder 1 (6) and hydraulic cylinder 2 (61) are electrically connected to the control box (19). The self-locking component is set between the two mounting columns (2) and the lifting platform body (5).

2. The sleeve-type hydraulic cylinder lifting platform for logistics transportation according to claim 1, characterized in that, The self-locking assembly includes a rack (8), mounting blocks (9), gears (10), a connecting plate (1001), a sliding plate (11), a locking rod (111), a fixing plate (12), a spring (13), a wedge block one (14), a wedge block two (15), and an electric cylinder (16). Two racks (8) are fixedly connected to the inside of each mounting post (2). Two mounting blocks (9) are mounted side-by-side on one side of each slider (4). Each mounting block (9) has a rotatable... Gear (10) is located between two corresponding racks (8) and meshes with them. Two connecting plates (1001) are fixed to each gear (10). The two connecting plates (1001) simultaneously avoid the two corresponding racks (8). Each connecting plate (1001) has multiple slots (1002) evenly distributed along its center on the side away from the gear (10). Two sliding plates (11) are slidably arranged side by side on each mounting block (9). Two sliding plates (11) are distributed on both sides of the corresponding gear (10). Each sliding plate (11) has multiple locking rods (111) evenly distributed along its center fixed on the side closest to the gear (10). The locking rods (111) are aligned with the corresponding locking slots (1002), and the locking rods (111) and locking slots (1002) are compatible. Two symmetrically distributed fixing plates (12) are fixed on each mounting block (9). A spring is fixed between the sliding plate (11) and the corresponding fixing plate (12). 13) Each mounting block (9) has an electric cylinder (16) mounted on its upper part. The electric cylinder (16) is electrically connected to the control box (19). Each slide plate (11) has a wedge block one (14) fixedly attached to its upper part. Each electric cylinder (16) has a wedge block two (15) fixedly attached to its piston rod. The wedge block two (15) is located above the corresponding two wedge blocks one (14), and the wedge block two (15) has two inclined surfaces. These two inclined surfaces contact the inclined surfaces of the two wedge blocks one (14) respectively.

3. The sleeve-type hydraulic cylinder lifting platform for logistics transportation according to claim 2, characterized in that, It also includes an inclined plate (101), which is rotatably mounted on the upper side of the movable frame (1), and its surface is covered with a layer of anti-slip pad.

4. The sleeve-type hydraulic cylinder lifting platform for logistics transportation according to claim 3, characterized in that, It also includes guide strips (3), with two guide strips (3) fixed to each side of the two mounting posts (2) that are close to each other. The slider (4) is slidably connected to the corresponding two guide strips (3), and the top surface of the guide strip (3) is flush with the highest point of the mounting post (2).

5. A sleeve-type hydraulic cylinder-type logistics transport lifting platform according to claim 4, characterized in that, It also includes support feet (17) and fixing nuts (171). Each of the multiple corners of the movable frame (1) is provided with a support foot (17) by thread, and the bottom surface of each support foot (17) is engraved. Each support foot (17) is provided with a fixing nut (171) by thread, and the fixing nut (171) is located above the movable frame (1).

6. The sleeve-type hydraulic cylinder lifting platform for logistics transportation according to claim 5, characterized in that, It also includes guardrails (18), and multiple guardrails (18) of different sizes are fixed to the top of the lifting platform body (5).

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