Support column protection device for intelligent lifting platform door
By designing a support column protection device in the lifting platform door, and utilizing the sliding fit between the hollow sealing ring and the protective sleeve, the problem of easy damage to the rack and pinion is solved, thereby improving the service life and stability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU DIGITAL EXPO TECH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-07-17
AI Technical Summary
The rack and pinion components of existing lifting platform doors are easily damaged when they come into contact with external debris or corrosive substances, reducing their service life.
A protective device for the support column of an intelligent lifting platform door was designed, including a protective sleeve, an optical axis support column, a hollow sealing ring, a support rod, and a piston. The lifting and lowering of the optical axis support column is controlled by an air inlet pipe and an air outlet pipe. The hollow sealing ring slides with the protective sleeve to prevent the support column from contacting the outside.
It effectively prevents the optical axis support column from coming into contact with external objects when not in use, thereby improving the service life and reliability of the equipment, preventing jamming, and enhancing the stability and practicality of the device during use.
Smart Images

Figure CN224511103U_ABST
Abstract
Claims
1. A support column protection device for a smart lift platform door, characterized by, include: The protective sleeve (1) contains the bottom end of a support rod (19), which is slidably sealed to the bottom guide hole of the optical axis support column (2). The top of the support rod (19) inside the optical axis support column (2) is connected to a piston (20), which is slidably sealed to the inner wall of the optical axis support column (2). The top of the piston (20) and the optical axis support column (2) form a pressure chamber. The inner wall of the pressure chamber is connected to the ends of the air inlet pipe and the air outlet pipe. Each of the air inlet pipe and the air outlet pipe is equipped with a solenoid valve. The optical axis support column (2) is slidably connected to the inner wall of the hollow sealing ring (3), which is connected to the top inner wall of the protective sleeve (1).
2. A support column protection device for an intelligent overhead platform door according to claim 1, wherein, The hollow sealing ring (3) is connected to the exhaust pipe (5). The top of the exhaust pipe (5) is placed above the bottom wall of the hollow sealing ring (3). A one-way valve is installed inside the exhaust pipe (5). The bottom of the exhaust pipe (5) is placed inside the protective sleeve (1). The bottom of the optical axis support column (2) is connected to a piston disc (18). The piston disc (18) is slidably connected to the inner wall of the protective sleeve (1). The piston disc (18) is located below the bottom of the exhaust pipe (5).
3. A support column protection device for an intelligent rising platform door according to claim 2, characterized in that The exhaust pipe (5) is connected to the end of the intake pipe (6), the intake pipe (6) is equipped with a one-way valve, and the other end of the intake pipe (6) is placed outside the protective sleeve (1).
4. The support column protection device for an intelligent overhead platform door of claim 2, wherein, The top of the hollow sealing ring (3) is connected to a plurality of cleaning tubes (7), and the top of the cleaning tubes (7) is connected to one side of the sealing disc (8), and the other side of the sealing disc (8) is set towards the optical axis support column (2).
5. A support column protection device for an intelligent rising platform door according to claim 4, characterized in that Multiple heat dissipation rings (9) are longitudinally connected to the hollow sealing ring (3). One side of the heat dissipation ring (9) is placed inside the hollow sealing ring (3), and the other side of the heat dissipation ring (9) is set away from the side wall of the hollow sealing ring (3).
6. The support column protection device for an intelligent lifting platform door according to claim 5, characterized in that, The top of the protective sleeve (1) is connected to multiple guide posts (10), and the guide posts (10) are slidably connected to the heat dissipation ring (9).
7. The support column protection device for an intelligent overhead platform door of claim 3, wherein, The exhaust pipe (5) is rotatably connected to a guide wheel (11), the side wall of the guide wheel (11) is in frictional engagement with the side wall of the optical axis support column (2), and multiple vibration grooves (12) are opened on the side wall of the guide wheel (11).
8. The support column protection device for an intelligent overhead platform door of claim 3, wherein, The other end of the air intake pipe (6) is connected to the end of the dustproof pipe (13), and the other end of the dustproof pipe (13) is equipped with a filter screen (14).
9. The support column protection device for an intelligent overhead door according to claim 5, wherein, The hollow sealing ring (3) has a rounded corner (16) between its top wall and its side wall.
10. A support column protection device for an intelligent rising platform door according to claim 9, characterized in that The hollow sealing ring (3) has a rounded corner (17) between its top wall and its inner wall.