The wheelchair lift includes a platform and a movement mechanism, the platform is constructed to accommodate the wheelchair, and the wheelchair is fixed to the platform; the movement mechanism can move the platform between wheelchair loaded/unloaded positions on the ground, and the surface of the platform has pairs of left and right wheel bearing parts, When the wheelchair is fixed to the platform, the left and right wheels of the wheelchair are respectively positioned on the pair of left and right wheel bearing portions configured to absorb vertical vibration of the vehicle.
The wheel supporting part includes a wheel supporting plate, a supporting mechanism, a spring member and a locking mechanism. The wheel of the wheelchair is positioned on the wheel supporting plate, and the supporting mechanism supports the wheel supporting plate to be able to move vertically relative to the surface of the platform. When depressed relative to the platform surface by gravity, the spring member is biased in a direction that moves the wheel support plate upward, the locking mechanism is configured to lock the wheel support plate so that the wheel support plate cannot be depressed relative to the platform surface, and the locking mechanism The wheel support plate can be unlocked.
The wheelchair lift wheel support portion includes a resilient block configured to be received in a groove portion formed in a surface of the platform.Each elastic block is constructed of a plurality of laminated layers, where the upper layer is made of a relatively hard material and the lower layer is made of a relatively soft material.
The wheelchair lift further includes a wheelchair detection device capable of detecting the downward displacement of the wheel support portion relative to the platform surface and identifying the wheelchair being positioned on the wheel support portion, wherein when the wheelchair detection device detects the wheelchair, The movement mechanism changes the movement speed of the platform to a normal speed, and wherein, when the wheelchair detection device does not detect the wheelchair, the movement mechanism changes the movement speed of the platform to a speed higher than the normal speed.
The motion mechanism includes a pair of left and right four-node linkage mechanisms, a hydraulic cylinder, and a solenoid valve, the hydraulic cylinder can make the four-node linkage mechanism rotate vertically, and the solenoid valve can make the flow rate of the oil fed to the hydraulic cylinder at a higher rate. Change between flow rate and lower flow rate.
The upper and lower ends of the stair lift are supported by columns, and the columns are made of stainless steel. Each stair lift is equipped with a call box on the upper and lower walkie-talkie columns, with a call button, a platform folding button, and a key switch on the box. When the elevator needs to be used, first open the lock with a special key at the calling end, press the calling button, the platform will automatically run to the calling end and then open automatically; when the platform is used up, press the folding button, and the platform will stop using after it is automatically folded in place. state. The summoning box installed at the upper end of the entrance and exit should be able to be used in the open air, and the protection level of the shell should not be less than IP65.
There are charging points on the upper and lower parts of the stair lift. When the stair lift enters the charging device correctly, the battery starts to charge, and the indicator light of the charger flashes rapidly; when the battery is fully charged, the indicator light of the charger flashes slowly, and the battery enters the floating state.
Safety gear and speed limiter: Under rated load, the safety gear can stop the platform and keep the platform in place within a distance of 150mm. When the safety gear is in action, the deflection of the platform shall not be greater than 5 degrees. When the safety gear operates, the power supply of the drive motor and the brake should be cut off at the same time. The speed limiter should accurately reflect the speed of the wheelchair platform, and the safety gear should be activated before the speed exceeds 0.3m/s.
The wheelchair platform is prevented from running. The wheelchair platform is provided with a contact blade and a contact surface. After encountering an obstacle, the platform should be stopped within a distance of 20mm. The average resistance measured at both ends and midpoint of the blade should not exceed 30N.
