Anti-falling marine lifting platform

Abstract

The invention discloses an anti-falling marine lifting platform, and relates to the field of building construction, and the anti-falling marine lifting platform is characterized in that the anti-falling marine lifting platform comprises a lifting machine box body, a lifting stand column and a synchronizing mechanism, the synchronizing mechanism comprises a synchronizing shaft, the outer surface of the synchronizing shaft is sleeved with an anti-falling gear, and an anti-falling device is arranged at the bottom of the lifting machine box body; and the anti-falling device locks the anti-falling gear when the elevator box body falls. By arranging the anti-falling device, when the elevator box falls abnormally, the anti-falling gear can be automatically locked, falling of the platform is stopped in time, and falling accidents caused by equipment faults or external force are avoided.

Description

Technical Field

[0001] The invention relates to the field of building construction, and more particularly to an anti-falling type marine lifting platform. Background Art

[0002] A lifting platform is a mechanical device used to move objects or people vertically. It raises or lowers the platform through a lifting system (usually hydraulic, electric or mechanical drive).

[0003] For example, the Chinese patent with patent number CN219058430U discloses a double-column and double-drive synchronous shaft for a marine lifting platform, which solves the interference of the shaking of the ship when sailing at sea on the lifting platform and improves the stability of the lifting box during the lifting process. However, it is affected by external factors such as bad weather, fluctuations, and vibrations. These factors may not only cause the lifting box to shake, but also cause the lifting platform to lose control. If the platform falls, it may cause serious casualties or equipment damage.

[0004] Therefore, new solutions need to be proposed to solve this problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a fall-proof marine lifting platform, which can prevent the lifting platform from falling and effectively avoid falling accidents caused by equipment failure or external force.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: a fall-proof marine lifting platform, including a lift box, a lifting column, and a synchronization mechanism, characterized in that: the synchronization mechanism includes a synchronization shaft, the outer surface of the synchronization shaft is sleeved with an anti-fall gear, and an anti-fall device is provided at the bottom of the lift box, and the anti-fall device locks the anti-fall gear when the lift box falls.

[0007] Furthermore, the anti-falling device includes a shell and a sliding locking plate for locking the anti-falling gear, a rotating chamber for rotating the anti-falling gear is provided in the shell, a sliding groove is provided on the cavity wall of the rotating chamber, the sliding locking plate includes a sliding portion and a locking portion facing the anti-falling gear, the sliding locking plate is slidably connected in the sliding groove through the sliding portion, and a locking tooth matching the anti-falling gear is provided on the side of the locking portion facing the anti-falling gear, the anti-falling device includes an initial state and a locking state, in the initial state, the sliding locking plate is away from the anti-falling gear, and the synchronous shaft rotates freely, in the locked state, the locking portion on the sliding locking plate engages with the anti-falling gear, the anti-falling gear on the synchronous shaft is locked by the anti-falling device, the synchronous shaft cannot rotate, and the elevator box cannot continue to move, and the anti-falling device also includes a trigger component for changing the anti-falling device from the initial state to the locked state.

[0008] Furthermore, the trigger assembly includes a control board, a speed sensor connected to the control board electrical signal, and trigger gunpowder connected to the control board electrical signal. The shell is provided with a sensor slot for installing the speed sensor and a gunpowder bin for installing the trigger gunpowder. The sensor slot is communicated with the rotating cavity, and the gunpowder bin is communicated with the slide slot and is located on the side of the slide slot away from the rotating cavity.

[0009] Furthermore, a check tooth is provided on the sliding part, a check groove perpendicular to the sliding groove is provided on the shell, a check block is slidably connected in the check groove, a check block is provided with a check auxiliary tooth matching the check tooth on the side facing the sliding part, a spring is provided in the check groove, and the spring is used to keep the check block in contact with the sliding part in a natural state, and after the check tooth and the check auxiliary tooth are engaged, the sliding locking plate can only move toward the anti-fall gear.

[0010] Furthermore, an air outlet hole for connecting the rotating chamber and the outside of the shell is opened on the shell, a one-way valve is arranged in the air outlet hole, and the air flows from the rotating chamber to the outside of the shell.

[0011] In summary, the present invention has the following beneficial effects: The anti-fall device of this lifting platform can automatically lock the anti-fall gear when the lifting box falls abnormally, and stop the falling of the platform in time, effectively avoiding falling accidents caused by equipment failure or external force.

[0012] The speed sensor monitors the falling speed of the lifting platform in real time, and when an abnormal speed is detected, the control panel activates the trigger gunpowder in time. The explosion of the gunpowder pushes the sliding locking plate and quickly enters the locking state, thus achieving anti-fall protection in a very short time.

[0013] The anti-return device can effectively prevent the sliding locking plate from sliding in the opposite direction, ensuring the stability of the locking state. This design avoids the failure of the anti-fall device due to reverse sliding at a critical moment, ensuring the reliability and long-term stability of the anti-fall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a partial cross-sectional view of the anti-falling device in the present invention.

[0015] In the figure: 1. elevator housing; 2. synchronous shaft; 3. anti-fall gear; 4. anti-fall device; 5. sliding locking plate; 6. rotating chamber; 7. slide groove; 8. sliding part; 9. locking part; 10. locking tooth; 11. speed sensor; 12. trigger gunpowder; 13. sensor slot; 14. gunpowder chamber; 15. check groove; 16. check block; 17. air outlet; 18. triangular bracket. DETAILED DESCRIPTION

[0016] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Embodiment: A fall-proof marine lifting platform includes a normal lifting operation process and an fall-proof protection process when an abnormal fall occurs; (1) Normal lifting operation process Under normal working conditions, the lift will perform a routine lifting operation. Here are the steps of the process: Start the lifting platform: the lifting box 1 is driven to rise and fall through the driving system (such as an electric motor, a hydraulic system, etc.) on the lifting column.

[0018] Operation of the synchronous shaft 2: The synchronous shaft 2 in the synchronous mechanism is driven by the driving system, and the rotating synchronous shaft 2 cooperates with the anti-fall gear 3 to drive the lifting box 1 to rise and fall.

[0019] The anti-falling device 4 is in the initial state: During this process, the anti-falling device 4 is in the initial state, that is, the sliding locking plate 5 is away from the anti-falling gear 3. At this time, the synchronous shaft 2 rotates freely, and the elevator box 1 can be lifted and lowered smoothly.

[0020] (2) Fall prevention protection process when an abnormal fall occurs If the elevator housing 1 suddenly falls due to a fault or other reasons, the anti-fall device 4 will be activated quickly to prevent the falling accident. The following are the reaction steps of each component in this process: The speed sensor 11 detects abnormal falling: the speed sensor 11 detects an abnormal increase in the speed of the lift box 1, indicating that the platform is falling. The speed sensor 11 sends this abnormal signal to the control board.

[0021] The control panel activates the trigger powder 12: The control panel determines that the falling speed of the lifting platform has exceeded the safety threshold according to the signal sent by the speed sensor 11. The control panel immediately activates the trigger powder 12 through an electrical signal.

[0022] The gunpowder generates a driving force: after the trigger gunpowder 12 explodes, the driving force generated pushes the sliding locking plate 5 toward the anti-falling gear 3. This driving force quickly activates the anti-falling device 4 to ensure that locking is achieved in a short time.

[0023] The sliding locking plate 5 engages with the anti-falling gear 3: the sliding locking plate 5 slides in the sliding groove 7 through the sliding portion 8 and approaches the anti-falling gear 3. The locking teeth 10 on the locking portion 9 mesh with the anti-falling gear 3 to lock the synchronization shaft 2.

[0024] The anti-fall device 4 locks the synchronous shaft 2: After the locking tooth 10 is engaged with the anti-fall gear 3, the anti-fall gear 3 is locked to prevent the synchronous shaft 2 from continuing to rotate, and the elevator box 1 stops falling. At this time, the elevator box 1 cannot move down further, successfully preventing the occurrence of a falling accident.

[0025] After the anti-fall device 4 is activated, the non-return device ensures that the sliding locking plate 5 does not slide in the reverse direction and remains locked. The spring pushes forward to ensure that the non-return auxiliary tooth is tightly engaged with the non-return tooth, thereby ensuring that the sliding locking plate 5 can only move in the direction of the anti-fall gear 3 to prevent it from sliding in the reverse direction after being locked. This design ensures that the anti-fall device 4 can work stably in an emergency. During normal lifting operations, the non-return device can also prevent the sliding locking plate 5 from moving in the direction of the anti-fall gear 3 to prevent accidental locking.

[0026] When the anti-fall device 4 is activated, a large amount of gas is generated in the gunpowder chamber 14. In order to prevent the air pressure from affecting the system in the opposite direction, the one-way valve on the air outlet 17 ensures that the air can only flow out of the rotating chamber 6, but cannot flow in in the opposite direction. This ensures that the air pressure in the rotating chamber 6 is always within the normal range, and also prevents the sliding locking plate 5 from being unable to slide normally or failing due to the accumulated pressure of the gas, and has a dust-proof effect.

[0027] The stabilizing triangle bracket 18 is fixed to the lower surface of the elevator housing 1 to provide stable support for the platform, prevent the platform from displacement or failure when subjected to external impact or vibration, and ensure the stable operation of the anti-fall device 4. The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, a number of improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A fall-proof marine lifting platform, comprising a lifting box (1), a lifting column, and a synchronization mechanism, characterized in that: The synchronization mechanism comprises a synchronization shaft (2), the outer surface of the synchronization shaft (2) is sleeved with an anti-falling gear (3), and the bottom of the elevator housing (1) is provided with an anti-falling device (4), and the anti-falling device (4) locks the anti-falling gear (3) when the elevator housing (1) falls.

2. The anti-falling marine lifting platform according to claim 1, characterized in that: The anti-fall device (4) comprises a housing and a sliding locking plate (5) for locking the anti-fall gear (3); a rotating chamber (6) for rotating the anti-fall gear (3) is provided in the housing; a sliding groove (7) is provided on the cavity wall of the rotating chamber (6); the sliding locking plate (5) comprises a sliding portion (8) and a locking portion (9) facing the anti-fall gear (3); the sliding locking plate (5) is slidably connected in the sliding groove (7) via the sliding portion (8); a locking portion (9) matching the anti-fall gear (3) is provided on a side of the locking portion (9) facing the anti-fall gear (3) The anti-fall device (4) comprises an initial state and a locked state. In the initial state, the sliding locking plate (5) is away from the anti-fall gear (3), and the synchronous shaft (2) rotates freely. In the locked state, the locking portion (9) on the sliding locking plate (5) engages with the anti-fall gear (3), and the anti-fall gear (3) on the synchronous shaft (2) is locked by the anti-fall device (4). The synchronous shaft (2) cannot rotate, and the elevator box (1) cannot continue to move. The anti-fall device (4) also includes a trigger component for changing the anti-fall device (4) from the initial state to the locked state.

3. The anti-falling marine lifting platform according to claim 2, characterized in that: The trigger assembly comprises a control panel, a rotation speed sensor (11) connected to the control panel by electrical signals, and a trigger powder (12) connected to the control panel by electrical signals. The housing is provided with a sensor slot (13) for mounting the rotation speed sensor (11) and a powder chamber (14) for mounting the trigger powder (12). The sensor slot (13) is in communication with the rotating chamber (6), and the powder chamber (14) is in communication with the slide groove (7) and is located on a side of the slide groove (7) away from the rotating chamber (6).

4. The anti-falling marine lifting platform according to claim 3, characterized in that: The sliding part (8) is provided with a check tooth, the shell is provided with a check groove (15) perpendicular to the sliding groove (7), a check block (16) is slidably connected in the check groove (15), and a check auxiliary tooth matching the check tooth is provided on the side of the check block (16) facing the sliding part (8), a spring is provided in the check groove (15), and the spring is used to keep the check block (16) in contact with the sliding part (8) in a natural state, and after the check tooth and the check auxiliary tooth are engaged, the sliding locking plate (5) can only move toward the anti-fall gear (3).

5. The anti-falling marine lifting platform according to claim 3, characterized in that: An air outlet (17) for connecting the rotating chamber (6) and the outside of the housing is provided on the housing, a one-way valve is provided in the air outlet (17), and the air flows in a direction from the rotating chamber (6) to the outside of the housing.

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