本发明属于医疗器械技术领域,公开一种推车底盘及医疗推车,推车底盘包括底板、中控轮组件和防解锁机构,中控轮组件包括中控轮和连接中控轮之间的锁紧轴,锁紧轴上有踏板,踏板能带动锁紧轴转动使锁紧轴与中控轮锁死,防解锁机构包括棘轮、棘爪组件和驱动件,棘轮与锁紧轴连接,棘爪组件包括固定座、棘爪、限位杆、第一弹性件、定位柱和第二弹性件,棘爪和限位杆均活动设于固定座,第一弹性件驱动棘爪向棘轮运动,第二弹性件使限位杆远离棘轮,定位柱贯穿棘爪和限位杆且能与棘爪间隙配合,驱动件与限位杆驱动连接,使棘爪能够与棘轮配合以锁紧中控轮。本发明的推车底盘在驻停后发生误解锁情况下,自身能锁停,以保证推车底盘使用。
The invention belongs to the technical field of medical instruments, and discloses a cart chassis and a medical cart, the cart chassis comprises a bottom plate, a central control wheel assembly and an anti-unlocking mechanism, the central control wheel assembly comprises central control wheels and a locking shaft connected between the central control wheels, a pedal is arranged on the locking shaft, the pedal can drive the locking shaft to rotate to enable the locking shaft and the central control wheels to be locked, and the locking shaft is connected with the anti-unlocking mechanism. The anti-unlocking mechanism comprises a ratchet wheel, a pawl assembly and a driving piece, the ratchet wheel is connected with the locking shaft, the pawl assembly comprises a fixing base, a pawl, a limiting rod, a first elastic piece, a positioning column and a second elastic piece, the pawl and the limiting rod are movably arranged on the fixing base, the first elastic piece drives the pawl to move towards the ratchet wheel, and the second elastic piece enables the limiting rod to be away from the ratchet wheel; the positioning column penetrates through the pawl and the limiting rod and can be in clearance fit with the pawl, and the driving piece is in driving connection with the limiting rod so that the pawl can be matched with the ratchet wheel to lock the center control wheel. Under the condition that mistaken unlocking occurs after parking of the cart chassis, the cart chassis can be locked, so that use of the cart chassis is guaranteed.
一种推车底盘及医疗推车
2024-05-24
Patent
Elektronische Ressource
Chinesisch