CN-122014099-A - But height-adjusting's steel ladder

CN122014099ACN 122014099 ACN122014099 ACN 122014099ACN-122014099-A

Abstract

The invention relates to the technical field of steel ladders, in particular to a height-adjustable steel ladder which comprises a ladder body assembly, a supporting and adjusting assembly and an anti-falling mechanism, wherein the upper end of the ladder body assembly is hinged with a grain checking platform and can rotate at 0-90 degrees around a hinge point, two forms of double/middle supports are arranged, the hinge of a pedal is ensured to be horizontal, a protection railing and a climbing rod are matched to promote safety, the supporting and adjusting assembly comprises an arc-shaped track groove, a sliding block and a length-adjustable supporting piece, a track can be calibrated to the same vertical plane, the adjusting mechanism is provided with two forms of rope driving and gear driving, flexible adjustment of the angle of the ladder body is realized, the anti-falling mechanism consists of a safety anti-falling rope and a finished anti-falling device, and the ladder body can be locked instantaneously when the adjusting mechanism fails. The steel ladder can be adjusted according to the height adaptation angle of grain loading, is smooth in operation, convenient and fast to operate, flexible in storage, space-saving, reliable in safety protection and high in universality, and is suitable for various grain stores and warehouses with height adjustment requirements to be popularized and used.

Inventors

GUO JIANYONG
Yao Zhangtang
ZHANG XIAODONG
LIU GUANGXUAN
YANG ZHIJUN
ZHANG JINGJIN
ZHANG JUNLING
GAO YAFEI

Assignees

郑州中粮科研设计院有限公司

Dates

Publication Date: 20260512
Application Date: 20260316

Claims (6)

1. The height-adjustable steel ladder is characterized by comprising a ladder body assembly, a supporting and adjusting assembly and an anti-falling mechanism, wherein the upper end of the ladder body assembly is hinged to a grain checking platform, the lower end of the ladder body assembly is connected with the supporting and adjusting assembly in a sliding fit mode, the ladder body assembly rotates around a hinge point within a range of 0-90 degrees to adapt to different grain loading heights, the supporting and adjusting assembly comprises a track structure fixed to a wall and an adjusting mechanism for driving the ladder body assembly to rotate, the track structure is connected with a wall embedded part through a length-adjustable supporting piece, the supporting piece is used for calibrating the track structure to the same vertical plane, and the anti-falling mechanism is connected with the lower end of the ladder body assembly and used for locking the position of the ladder body assembly to avoid falling when the adjusting mechanism fails.
2. The height-adjustable steel ladder according to claim 1, wherein the ladder body assembly comprises a main ladder beam (1), a supporting ladder beam (2), a lower supporting beam (6) and a tread plate (3), the main ladder beam (1) is symmetrically arranged on two sides of the tread plate (3), the tread plate (3) is arranged at equal intervals along the length direction of the main ladder beam (1), two ends of the tread plate (3) are hinged with the main ladder beam (1), the supporting ladder beam (2) is arranged at the middle part or two ends of the lower part of the tread plate (3), the lower end of the ladder body assembly is perpendicular to the main ladder beam (1) and is fixedly provided with the lower supporting beam (6), the main ladder beam (1) is provided with a protective railing (5), and the end part of the tread plate (3) is provided with a climbing rod (4).
3. The steel ladder with adjustable height according to claim 1, characterized in that the support adjusting assembly comprises a track groove (7), a track sliding block (8) and a supporting piece, wherein the track groove (7) is of an arc-shaped structure and is installed in an embedded part of a wall through the supporting piece, the track sliding block (8) is rotatably sleeved at the end part of a lower support beam (6) of the ladder body assembly, and the track sliding block (8) is clamped in the track groove (7) and slides relatively along the track groove (7).
4. A height-adjustable steel ladder according to claim 3, characterized in that the support comprises a base sleeve (13), an adjusting screw (14) and two locking nuts (17), wherein the base sleeve (13) is fixed with the wall embedded part, one end of the adjusting screw (14) is connected with the track groove (7) through a fish eye bearing (15), a rotating end head (16) is arranged at the end of the adjusting screw, the other end of the adjusting screw (14) is in threaded fit connection with the base sleeve (13), the locking nuts (17) are sleeved on the adjusting screw (14) in a threaded mode, and after the adjusting screw (14) is adjusted in place, the locking nuts (17) tightly abut against the base sleeve (13) to achieve axial limiting of the adjusting screw.
5. The height-adjustable steel ladder according to claim 1, characterized in that the adjusting mechanism comprises an angle adjusting rope (9), a pulley (11) and a driving piece, one end of the angle adjusting rope (9) is connected with a lower supporting beam (6) of the ladder body assembly, the other end of the angle adjusting rope passes through the pulley (11) of the roof to be connected with the driving piece, and the driving piece is a manual winch or an electric winch.
6. The steel ladder with adjustable height according to claim 1, wherein the anti-falling mechanism comprises a safety anti-falling rope (10) and a finished product anti-falling device (12), the finished product anti-falling device (12) is fixed on a roof or a floor, one end of the safety anti-falling rope (10) is connected with the lower end of the ladder body assembly, the other end of the safety anti-falling rope is connected with the finished product anti-falling device (12), and the safety anti-falling rope (10) rotates along with the ladder body assembly to be self-adaptive to stretch out and draw back.

Description

But height-adjusting's steel ladder Technical Field The invention relates to the technical field of steel ladders, in particular to a height-adjustable steel ladder. Background At present, the grain loading line height of a grain checking platform is calculated and determined according to grain volume weights specified by specifications, in the operation process of an actual grain depot, the actual grain volume weights and design values are obviously different under the influence of grain products in different areas and grain storage characteristics in different periods, and the total warehouse capacity of the grain depot has strict upper limit requirements, so that the actual grain loading height of high-rise grain loading grain depots such as shallow round warehouses, building warehouses and vertical silos is generally lower than the design grain loading height, and a height difference of 0-2 meters is formed between the actual grain loading height and the actual grain volume weight is more obvious as the design grain loading height is higher. The existing grain depot grain checking steel ladder is of a fixed structure, the installation height of the grain checking steel ladder is set according to the height of a designed grain loading line, the change of the actual grain loading height cannot be adapted, and the defect of passing connection between a grain checking platform and an actual grain loading surface is caused. Meanwhile, the fixed steel ladder has no flexible adjusting function, if the steel ladder is designed to adapt to a higher grain loading height, the length of the steel ladder is designed to be shorter, when the actual grain loading height is lower, the steel ladder cannot be directly communicated to a grain loading surface, and if the grain loading height is lower, the situation that the steel ladder is buried in a grain pile can occur, so that grain pollution is caused. Disclosure of Invention Aiming at the defects and problems of poor suitability, inconvenient use and the like of the conventional grain depot grain checking steel ladder, the invention provides the height-adjustable steel ladder, which is suitable for grain depot grain checking operation and solves the problem that the conventional fixed steel ladder cannot adapt to the actual grain loading height change of the grain depot. The invention solves the technical problems by adopting a scheme that the height-adjustable steel ladder comprises a ladder body assembly, a supporting and adjusting assembly and a safety protection assembly, wherein the upper end of the ladder body assembly is hinged with a grain checking platform, the lower end of the ladder body assembly is connected with the supporting and adjusting assembly in a sliding fit manner, the ladder body assembly rotates around a hinging point within a range of 0-90 degrees to adapt to different grain loading heights, the supporting and adjusting assembly comprises a track structure fixed with a wall and an adjusting mechanism for driving the ladder body assembly to rotate, the track structure is connected with a wall embedded part through a support piece with adjustable length, the support piece is used for calibrating the track structure to the same vertical plane, and the safety protection assembly comprises a falling prevention mechanism which is connected with the lower end of the ladder body assembly and is used for locking the position of the ladder body assembly to prevent the ladder body assembly from falling when the adjusting mechanism fails. Further, the ladder body subassembly includes main ladder beam, support ladder beam, lower support beam and tread, main ladder beam symmetry sets up in the both sides of tread, and the tread is equidistant along the length direction of main ladder beam and arranges, and the both ends of tread are articulated with main ladder beam, support ladder beam sets up in the below middle part or the both ends of tread, the lower extreme perpendicular to main ladder beam of the ladder body subassembly is fixed with lower support beam, be equipped with the guard rail on the main ladder beam, the tread tip is equipped with the pole-climbing. Further, the support adjusting assembly comprises a track groove, a track sliding block and a supporting piece, wherein the track groove is of an arc-shaped structure and is installed in an embedded part of a wall through the supporting piece, the track sliding block is rotatably sleeved at the end part of a lower supporting beam of the ladder body assembly, and the track sliding block is clamped in the track groove and slides relatively along the track groove. Further, support piece includes base sleeve pipe, adjusting screw and two lock nuts, base sleeve pipe is fixed with wall built-in fitting, adjusting screw's one end is passed through fish eye bearing and is connected with the track groove to be equipped with rotatory end at its tip, adjusting screw's the other end and base sleeve pipe scre