A high-stability telescopic cylinder lifting platform with self-locking function

Abstract

This utility model belongs to the field of logistics equipment, and particularly relates to a high-stability telescopic cylinder lifting platform with a self-locking function. It includes a movable frame, a telescopic cylinder, a loading platform, and a staircase. The telescopic cylinder is installed at the top of the movable frame and has three progressively extending piston rods. The loading platform is installed at the end of the first piston rod from top to bottom of the telescopic cylinder. The staircase is installed on one side of the top of the movable frame. The support and guide plate structure ensures smooth platform lifting. Combined with a rack, wedge, rib, spring, top plate, and electric cylinder assembly, a highly efficient and reliable self-locking system is constructed. When the telescopic cylinder malfunctions, the self-locking mechanism responds immediately to prevent the loading platform from accidentally falling, significantly improving the safety and stability of the lifting platform operation.

Description

Technical Field

[0001] This utility model belongs to the field of logistics equipment, and in particular relates to a high-stability sleeve cylinder type lifting platform with self-locking function. Background Technology

[0002] The telescopic cylinder lifting platform is a vertical lifting device that uses a multi-stage hydraulic telescopic cylinder structure. It is mainly used for the smooth transfer, loading, unloading, and docking of goods between different working heights. With its high-efficiency lifting performance, this equipment is widely used in various industrial scenarios such as warehousing and logistics, production workshops, distribution centers, and truck loading and unloading platforms. It has significant advantages such as compact structural design, strong load capacity, stable operation, and convenient operation.

[0003] Traditional telescopic cylinder lifting platforms pose numerous safety hazards during use. First, uneven load distribution or a shift in the center of gravity can easily lead to unbalanced load instability, causing the platform to tilt and threatening operational safety. Second, these platforms rely on hydraulic systems to maintain lifting, and leaks in the cylinders or pipelines can cause hydraulic pressure loss, resulting in the platform falling unexpectedly without warning and causing serious safety accidents.

[0004] Therefore, there is a particular need for a high-stability telescopic cylinder lifting platform with a self-locking function to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional telescopic cylinder lifting platforms, such as instability and accidental fall risks when subjected to eccentric loads or hydraulic system failures, this utility model provides a highly stable telescopic cylinder lifting platform with a self-locking function.

[0006] This utility model is achieved through the following technical means: a high-stability telescopic cylinder lifting platform with a self-locking function, comprising a movable frame, a telescopic cylinder, a loading platform, and a staircase. The telescopic cylinder is installed at the top of the movable frame and has three progressively extending piston rods. The loading platform is installed at the end of the first piston rod from top to bottom of the telescopic cylinder. The staircase is installed on one side of the top of the movable frame. The platform also includes a bracket, a guide plate, a rack, a wedge block, a rib, a spring, a top plate, and an electric cylinder. The bracket is installed on one side of the top of the loading platform. One end of the telescopic cylinder passes through the upper part of the bracket, establishing a stable connection between the two. The end of the third piston rod from top to bottom of the telescopic cylinder is located above the bracket. Each piston rod has an L-shaped guide plate fixed to its end. The guide plate passes through the upper part of the bracket and slides with it. A rack is fixed to the side of each guide plate away from the sleeve cylinder. A rib is slidably mounted on the upper part of the bracket. A rib is also slidably mounted on the upper part of the second and third guide plates from the top. A wedge is fixed to one end of each rib, and the wedge is engaged in the tooth groove of the corresponding rack. A top plate is fixed to the other end of each rib. A spring is sleeved on the other end of each rib. An electric cylinder is installed on the upper part of the bracket. An electric cylinder is also installed on the upper part of the second and third guide plates from the top. The piston rod of each electric cylinder extends to the left and is aligned with the corresponding top plate.

[0007] In a preferred embodiment of the present invention, the platform further includes guardrails and baffles. The two guardrails are arranged side by side and fixed to the top of the loading platform, and two baffles are symmetrically distributed on one of the guardrails.

[0008] In a preferred embodiment of the present invention, the invention further includes a rod and a limiting block. A rod is slidably placed on one side of the upper part of each baffle, and one end of the rod is inserted into a corresponding hole on the upper part of another guardrail. A limiting block is fixed to one side of the upper part of each baffle. The limiting block is located on the side of the corresponding rod and has a U-shaped groove for accommodating the sliding of the rod.

[0009] In a preferred embodiment of the present invention, the device further includes a rotating plate, a support foot, and a fixing nut. A rotating plate is rotatably provided at each of the multiple corners of the movable frame. A support foot is threaded at the end of each rotating plate. A rubber pad is provided on the bottom surface of the support foot. A fixing nut is threaded at one end of each support foot. The bottom surface of the fixing nut is in close contact with the top surface of the corresponding rotating plate.

[0010] In a preferred embodiment of the present invention, a counterweight is also included, which is mounted on the movable frame.

[0011] In a preferred embodiment of the present invention, a handle is also included, which is installed on the other side of the top of the movable frame and is a rotary handle.

[0012] Compared with the prior art, this utility model has the following advantages: 1. The support and guide plate structure ensures the smooth lifting of the platform. Combined with the rack, wedge block, rib rod, spring, top plate and electric cylinder assembly, a highly efficient and reliable self-locking system is constructed. When the sleeve cylinder fails, the self-locking mechanism can respond immediately to prevent the loading platform from falling unexpectedly, which significantly improves the safety and stability of the lifting platform operation.

[0013] 2. By setting up guardrails and barriers, the working area of ​​the cargo platform is effectively protected. Then, by using the combination of plugs and limit blocks, the barriers can be quickly locked and released to prevent accidental opening and further ensure the safety of workers.

[0014] 3. By setting up a rotating plate, support feet, and fixing nuts, not only can the lifting platform achieve stable support and positioning during operation, but its adaptability and overall stability under complex or uneven terrain conditions are also significantly improved. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the sleeve cylinder, bracket, and guide plate components of this utility model.

[0017] Figure 3 This is a partial sectional view of the bracket and guide plate components of this utility model.

[0018] Figure 4 This is a partial cross-sectional view of the bracket component of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the guardrail, baffle, and pole components of this utility model.

[0020] Reference numerals: 1. Moving frame, 2. Sleeve cylinder, 3. Loading platform, 4. Guardrail, 5. Baffle, 6. Support, 7. Guide plate, 8. Rack, 9. Wedge block, 10. Rib, 11. Spring, 12. Top plate, 13. Electric cylinder, 14. Insert rod, 15. Limiting block, 16. Staircase, 17. Turning plate, 18. Support leg, 181. Fixing nut, 19. Counterweight, 20. Handle. Detailed Implementation

[0021] Example: A high-stability telescopic cylinder lifting platform with self-locking function, such as... Figures 1-5As shown, the system includes a movable frame 1, a sleeve cylinder 2, a loading platform 3, a staircase 16, a counterweight 19, and a handle 20. The sleeve cylinder 2 is bolted to the center of the top of the movable frame 1 and has three progressively extending piston rods. The loading platform 3 is bolted to the end of the first piston rod from top to bottom of the sleeve cylinder 2. The staircase 16 is bolted to the right side of the top of the movable frame 1, with its highest point close to the height of the loading platform 3, facilitating access to the loading platform 3 by climbing the staircase 16. The steps of the staircase 16 are covered with rubber anti-slip mats. The counterweight 19 is bolted to the movable frame 1, increasing the overall weight and improving the stability and safety of the loading platform 3 during lifting. The handle 20... The top left side of the movable frame 1 is bolted together and has a rotary handle that can be extended or retracted as needed. It also includes a bracket 6, guide plate 7, rack 8, wedge block 9, rib rod 10, spring 11, top plate 12, and electric cylinder 13. The bracket 6 is bolted to the top left side of the loading platform 3. The upper end of the sleeve cylinder 2 passes through the upper part of the bracket 6, establishing a stable connection. The end of the third piston rod from the top of the sleeve cylinder 2 is located above the bracket 6. Each piston rod end of the sleeve cylinder 2 is fixedly connected to an L-shaped guide plate 7. The guide plate 7 passes through the upper part of the bracket 6 and slides with it, thus providing stable guidance for the lifting and lowering movement of the piston rod. Each guide plate 7 is located away from the left side of the sleeve cylinder 2. A rack 8 is fixedly connected to the side. A prism 10 is slidably mounted on the upper part of the bracket 6. A prism 10 is also slidably mounted on the upper part of the second and third guide plates 7 from the top. Based on the cross-sectional structure of the prism 10, it can form a stable sliding fit with the corresponding component (i.e., the bracket 6 or the second and third guide plates 7 from the top). A wedge block 9 is fixedly connected to the right end of each prism 10. The wedge block 9 is inserted into the tooth groove of the corresponding rack 8. Each tooth groove of the rack 8 has two working surfaces: one inclined and one straight. The wedge block 9 also has one inclined surface and one straight surface. The straight surface of the wedge block 9 is in close contact with the straight surface of the tooth groove of the corresponding rack 8. Each prism... A top plate 12 is fixedly connected to the left end of rod 10. A spring 11 is sleeved on the left end of each rib 10. For the spring 11 on the bracket 6, its left and right ends are fixedly connected to the corresponding top plate 12 and bracket 6 respectively. For the spring 11 on the guide plate 7, its left and right ends are fixedly connected to the corresponding top plate 12 and guide plate 7 respectively, so as to provide a restoring elastic force for the rib 10. An electric cylinder 13 is bolted to the upper part of the bracket 6. The second and third guide plates 7 from the top are also bolted to the upper part of an electric cylinder 13. The piston rod of each electric cylinder 13 extends to the left and is aligned with the corresponding top plate 12, so as to ensure that the piston rod of the electric cylinder 13 can accurately contact and squeeze the top plate 12 when it extends.

[0022] like Figure 1 and Figure 5As shown, it also includes guardrails 4 and baffles 5. The two guardrails 4 are arranged side by side and fixedly connected to the top of the loading platform 3, which are responsible for shielding the front and rear sides of the loading platform 3 to form effective protection. Two baffles 5 are symmetrically distributed on the front guardrail 4. The baffles 5 can be rotated and opened and closed in the horizontal plane to facilitate the entry and exit of the working area of ​​the loading platform 3.

[0023] like Figure 1 and Figure 5 As shown, it also includes a rod 14 and a limiting block 15. A rod 14 is slidably placed on the upper rear side of each baffle 5. The rear end of the rod 14 is inserted into the corresponding hole on the upper part of the rear guardrail 4, thereby locking the baffle 5 on the rear guardrail 4 and preventing the baffle 5 from rotating accidentally. A limiting block 15 is fixedly connected to the upper rear side of each baffle 5. The limiting block 15 is located in front of the corresponding rod 14 and has a U-shaped groove for accommodating the sliding of the rod 14.

[0024] like Figure 1 As shown, it also includes a rotating plate 17, a support foot 18, and a fixing nut 181. A rotating plate 17 is rotatably installed at each of the four corners of the movable frame 1. A support foot 18 is threaded at the end of each rotating plate 17. The bottom surface of the support foot 18 is provided with a rubber pad to enhance the friction with the ground. A fixing nut 181 is threaded at the upper end of each support foot 18. The bottom surface of the fixing nut 181 is in close contact with the top surface of the corresponding rotating plate 17, thereby locking the position of the support foot 18 on the rotating plate 17.

[0025] In the initial state, the front end of the insertion rod 14 is offset from the U-shaped groove of the limiting block 15, thereby limiting the position of the insertion rod 14 and keeping it inserted into the upper hole of the rear guardrail 4, thereby locking the closed position of the baffle 5. At the same time, the support leg 18 is in a suspended state, and the lifting platform can be freely moved to the target work location with the help of the mobile frame 1.

[0026] After the lifting platform moves to the designated position, the staff rotates the fixing nut 181 upwards in sequence to disengage it from the top surface of the rotating plate 17 and then rotates the support leg 18 downwards so that its bottom surface contacts the ground. As the support leg 18 continues to move downwards, the mobile frame 1 is gradually lifted and placed in a suspended state, thereby achieving stable positioning of the lifting platform.

[0027] Next, climb the stairs 16 to approach the area of ​​the right side baffle 5, rotate the insertion rod 1490 degrees clockwise so that the front end of the insertion rod 14 is aligned with the U-shaped groove on the limiting block 15. After alignment, pull the insertion rod 14 forward so that it slides into the U-shaped groove. At this time, the rear end of the insertion rod 14 disengages from the hole on the upper part of the rear guardrail 4, releasing the lock on the right side baffle 5. Then rotate the right side baffle 5 to a suitable angle to open the working passage of the loading platform 3. Then return the right side baffle 5 to the initial position to cover the working area of ​​the loading platform 3 and ensure working safety. Then push the insertion rod 14 backward so that its rear end re-inserts into the hole on the upper part of the rear guardrail 4, relocking the closed position of the right side baffle 5. Then rotate the insertion rod 1490 degrees counterclockwise so that the front end of the insertion rod 14 is offset from the U-shaped groove on the limiting block 15.

[0028] Then, start the electric cylinder 13, control its piston rod to extend to the left, accurately contact and push the top plate 12, drive the rib rod 10 to slide to the left, and the spring 11 is stretched accordingly. At the same time, the wedge block 9 moves to the left synchronously with the rib rod 10, disengages from the locking state with the tooth groove of the rack 8, and completes the unlocking action of the self-locking mechanism. Next, start the sleeve cylinder 2, control its three piston rods to extend upward step by step, drive the loading platform 3 to achieve vertical lifting. The guide plate 7 and the bracket 6 form a sliding guide structure to ensure that the entire lifting process is stable and reliable, without shaking or deviation.

[0029] Once the cargo platform 3 reaches the target height, the sleeve cylinder 2 is immediately shut off to maintain the current height. Then, the piston rod of the electric cylinder 13 is controlled to retract to the right, disengaging from the pushing action on the top plate 12. Under the action of the spring 11's restoring force, the rib rod 10 slides to the right to the initial position, and the wedge block 9 re-engages into the tooth groove of the rack 8, forming a mechanical self-locking structure. This self-locking mechanism can effectively prevent the cargo platform 3 from suddenly falling due to the unexpected retraction of the piston rod when the sleeve cylinder 2 experiences sudden failures such as hydraulic leakage or pipeline rupture, significantly improving the safety and stability of the lifting platform operation.

[0030] After the operation is completed, reverse the above steps: first release the self-locking structure, then control the three piston rods of the sleeve cylinder 2 to retract downwards step by step, so that the loading platform 3 can smoothly fall back to the initial position.

Claims

1. A high-stability telescopic cylinder lifting platform with self-locking function, comprising a movable frame (1), a telescopic cylinder (2), a loading platform (3), and a staircase (16), wherein the telescopic cylinder (2) is installed at the top of the movable frame (1) and has three progressively extending piston rods; the loading platform (3) is installed at the end of the first piston rod from top to bottom of the telescopic cylinder (2); and the staircase (16) is installed on one side of the top of the movable frame (1), characterized in that, It also includes a bracket (6), a guide plate (7), a rack (8), a wedge (9), a prism rod (10), a spring (11), a top plate (12), and an electric cylinder (13). The bracket (6) is installed on one side of the top of the loading platform (3). One end of the sleeve cylinder (2) passes through the upper part of the bracket (6), and the two are firmly connected. The end of the third piston rod of the sleeve cylinder (2) from the top is located above the bracket (6). Each piston rod of the sleeve cylinder (2) is fixedly connected to an L-shaped guide plate (7). The guide plate (7) passes through the upper part of the bracket (6) and slides with it. A rack (8) is fixedly connected to the side of each guide plate (7) away from the sleeve cylinder (2). A prism rod (10) is slidably arranged on the upper part of the bracket (6). A prism rod (10) is also slidably arranged on the upper part of the second and third guide plates (7) from the top. A wedge block (9) is fixed to one end of each prism rod (10). The wedge block (9) is inserted into the tooth groove of the corresponding rack (8). A top plate (12) is fixed to the other end of each prism rod (10). A spring (11) is sleeved on the other end of each prism rod (10). An electric cylinder (13) is installed on the upper part of the bracket (6). An electric cylinder (13) is also installed on the upper part of the second and third guide plates (7) from the top. The piston rod of each electric cylinder (13) extends to the left and is aligned with the corresponding top plate (12).

2. The high-stability telescopic cylinder lifting platform with self-locking function according to claim 1, characterized in that, It also includes guardrails (4) and baffles (5). The two guardrails (4) are arranged side by side and fixed to the top of the loading platform (3). Two baffles (5) are symmetrically arranged on one of the guardrails (4).

3. A high-stability telescopic cylinder lifting platform with self-locking function according to claim 2, characterized in that, It also includes a rod (14) and a limiting block (15). A rod (14) is slidably placed on one side of the upper part of each baffle (5). One end of the rod (14) is inserted into the corresponding hole on the upper part of another guardrail (4). A limiting block (15) is fixedly connected to one side of the upper part of each baffle (5). The limiting block (15) is located on the side of the corresponding rod (14) and has a U-shaped groove for accommodating the sliding of the rod (14).

4. A high-stability telescopic cylinder lifting platform with self-locking function according to claim 3, characterized in that, It also includes a rotating plate (17), a support foot (18) and a fixing nut (181). A rotating plate (17) is rotatably installed on each of the multiple corners of the movable frame (1). A support foot (18) is threaded at the end of each rotating plate (17). A rubber pad is provided on the bottom surface of the support foot (18). A fixing nut (181) is threaded at one end of each support foot (18). The bottom surface of the fixing nut (181) is in close contact with the top surface of the corresponding rotating plate (17).

5. A high-stability telescopic cylinder lifting platform with self-locking function according to claim 4, characterized in that, It also includes a counterweight (19), which is mounted on the mobile frame (1).

6. A high-stability telescopic cylinder lifting platform with self-locking function according to claim 5, characterized in that, It also includes a handle (20), which is mounted on the other side of the top of the movable frame (1) and is a rotary handle.

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