US 2018/0170716 A1Published application

Hydraulic elevating platform having no guide rails and elevating method

AssigneesDongnan Elevator Co., Ltd., China University of Mining and Technology

InventorsZhencai Zhu, Guohua Cao, Jiancong Qin, Panda Wang, Weihong Peng, Lingyun Ma, Yiping Ma, Ming Gao, Jianrong Yang, Lei Wei

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

A hydraulic elevating platform having no guide rails and an elevating method. A hydraulic power pack drives three parallel hydraulic cylinders to work synchronously, thereby implementing the rising and falling of an elevating platform; when the elevating platform reaches a predetermined floor, an upper electric pushrod pushes a pedal assembly out, and then the pedal assembly drives a pedal to rise by means of a pedal elevating system until the pedal is flush with the surface of a loading table of the elevating platform; outward-swinging doors between the elevating platform and a floor open to form pedal guardrails; then sliding doors open and a man can step onto a stair via the pedal assembly. An eccentric loading adjusting means eliminates eccentric loading to achieve balance about the center of gravity, thereby eliminating the eccentric loading of the platform. The elevating platform is simple in structure, safe, reliable, and easy to maintain. The elevating platform, placed within a spiral stair, is convenient for movement of crowds and cargo delivery at certain scenarios and is widely applicable. The elevating method is simple to implement and effectively solves the eccentric loading problem caused by reasons such as outstretching of a pedal of a hydraulic elevating platform and uneven distribution of people on the elevating platform, so that the hydraulic elevating platform is more stable and reliable during operation.

Claims18

Dependent claims

A rail-free hydraulic lifting platform, comprising a hydraulic pump station, and three parallel hydraulic cylinders and a lifting platform arranged on the floor in a spiral staircase, the three parallel hydraulic cylinders are arranged in an equilateral triangle layout, and the lifting platform is fixed to the top of the three parallel hydraulic cylinders;

the lifting platform comprises a bearing platform, which is provided with handrails on its top part, an annular door and an outward-swing door arranged at its entrance and exit, and an upper truss fixedly connected to its bottom part;
an intermediate truss and a lower truss are arranged in parallel to each other below the upper truss, a platform transition device is arranged on the top part of the intermediate truss, and an eccentric load adjusting device is arranged on the top part of the lower truss;
the upper truss, intermediate truss, and lower truss are fixedly connected via vertical support plates;
the platform transition device comprises an upper supporting guide frame and an upper electric push rod fixedly connected to the top part of the upper supporting guide frame, and a footstep assembly is hinged to the right end of the upper electric push rod, the footstep assembly can move on the top part of the upper supporting guide frame in an extending/retracting direction of the upper electric push rod, and has a lifting mechanism arranged in it;
the eccentric load adjusting device comprises a servo motor and a rotating platform, the rotating platform is connected to the servo motor and has a lower supporting guide frame arranged above it;
the lower supporting guide frame has a lower electric push rod fixedly connected to its top part, an eccentric load counterweight is hinged to the right end of the lower electric push rod, and the eccentric load counterweight can move on the lower supporting guide frame in an extending/retracting direction of the lower electric push rod;
rollers are mounted on the bottom of the lower supporting guide frame, and can roll along a circular guide rail fixedly connected to the lower truss.

4 more elements

A hydraulic lifting platform comprising:

a hydraulic pump station,
three parallel hydraulic cylinders arranged in an equilateral triangle layout, and
a lifting platform arranged on the floor in a spiral staircase and fixed to the top of the three parallel hydraulic cylinders, wherein the lifting platform comprises:
a bearing platform having handrails on its top part,
an annular door and an outward-swinging door arranged at its entrance and exit,
an upper truss fixedly connected to its bottom part;
an intermediate truss and a lower truss arranged in parallel to one another below the upper truss,
a platform transition device arranged on the top part of the intermediate truss, and
an eccentric load adjusting device arranged on the top part of the lower truss;
wherein the upper truss, intermediate truss, and lower truss are fixedly connected to the lifting platform via support plates;
wherein the platform transition device comprises:
an upper supporting guide frame and an upper electric push rod fixedly connected to the top part of the upper supporting guide frame, and
a footstep assembly hinged to the end of the upper electric push rod, so that the footstep assembly can move on the top part of the upper supporting guide frame in an extending/retracting direction of the upper electric push rod, and has a lifting mechanism arranged in it;
wherein the eccentric load adjusting device comprises a servo motor and a rotating platform, the rotating platform connected to the servo motor and arranged below a lower supporting guide frame;
the lower supporting guide frame having a lower electric push rod fixedly connected to its top part, an eccentric load counterweight hinged to the end of the lower electric push rod, and the eccentric load counterweight moves on the lower supporting guide frame in an extending/retracting direction of the lower electric push rod;
and
wherein rollers are mounted on the bottom of the lower supporting guide frame, and are able to roll along a circular guide rail fixedly connected to the lower truss.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/542,601Filed 29 Dec 2015
Priority: CN 201510847654.227 Nov 2015
Published: 21 Jun 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B66B 9/04
Kinds or types of lifts in, or associated with, buildings or other structures: actuated pneumatically or hydraulically
B66B 7/027
Mounting means therefor: for mounting auxiliary devices
B66B 11/006
Main component parts of lifts in, or associated with, buildings or other structures: applications of loading and unloading equipment for lifts…
B66B 11/028
Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side: active systems