Lap Joint Platform for Large-Load Lifting Container
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Solution Overview
Problem
Existing lap joint platforms for large-load lifting containers experience instability during loading and unloading, leading to increased lifting cycling time and safety concerns, with existing solutions being costly, requiring precise operations, and having limited steel wire rope compensation height.
Innovation Solution
A lap joint platform design featuring a machine frame, rocker arm platform, locking device, and lifting device with a support pawl curve rail, allowing for enhanced stability, easy operation, and increased steel wire rope compensation height through synchronized motion of the support pawl and rocker arm platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking device with locking plug and base seat is used, then the lifting container is tightly locked and stabilized, but the manufacturing cost increases and requires accurate stopping location and tedious operations
Solution Approach 1:
The locking device is divided into separate functional components: a locking pawl for engagement, a locking arm for actuation, and a locking spring for providing locking force. This segmentation allows each component to be optimized independently and simplifies the overall mechanism compared to a monolithic locking plug system.
Solution Approach 2:
The locking spring automatically engages the locking pawl with the locking arm, providing self-locking functionality without requiring external actuation or complex control systems. The system maintains automatic locking and unlocking through the elastic potential energy stored in the spring, eliminating the need for precise stopping locations and tedious manual operations.
2Reliability
If a support oil cylinder with support pawl is used, then the cage is supported and stabilized, but the compensation height for steel wire rope is small and service life is affected
Solution Approach 1:
The support pawl is designed to move along a curved path rather than a straight linear path. The curved trajectory of the pawl allows it to achieve both vertical support and horizontal positioning, effectively increasing the compensation height in the vertical dimension while maintaining stability through the curved geometry.
Solution Approach 2:
The curved path of the support pawl utilizes circular or arc-shaped motion geometry. This curvature allows the pawl to trace a larger arc during its movement, thereby increasing the effective compensation height for steel wire rope elastic shrinkage while maintaining a compact structure and improving service life through reduced linear wear.
3Productivity
If existing lap joint platform is used, then loading and unloading procedures are performed, but instability occurs and lifting cycling time increases
Solution Approach 1:
The locking device is pre-positioned and pre-loaded with the locking spring in a ready state before loading operations begin. The support pawl is pre-configured on its curved path, allowing immediate engagement when the lifting container is positioned, thereby eliminating delays and ensuring stability from the start of loading procedures.
Solution Approach 2:
The locking mechanism incorporates automatic engagement feedback where the locking spring continuously monitors and maintains engagement between the locking pawl and locking arm. This feedback mechanism ensures that the system automatically adjusts to maintain stability during loading and unloading, preventing instability without requiring manual intervention or extending cycling time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The platform ensures reliable and stable loading and unloading operations, reduces lifting cycling time, and extends the service life of components by providing increased compensation height and surface contact, thereby improving safety and efficiency.
Implementation Method 1
the locking oil cylinder is fixed with the support on the machine frame; a piston rod of the locking oil cylinder is connected to the locking oil cylinder front support
Implementation Method 2
the support oil cylinder is hinged with the support oil cylinder rear base; the piston rod of the support oil cylinder is connected to an end of the support pawl push rod
Implementation Method 3
the locking lower sliding block is hinged with the locking upper sliding block via a hinge pin
Implementation Method 4
the rocker arm platform is hinged with a top portion of the machine frame via a shaft set
Data Source
AI summary
A lap joint platform of a large-load lifting container, comprising a machine frame (18), a rocker arm platform (14), a rear rocker arm platform (17), a locking device and lifting devices. The rocker arm platform (14) is hinged with the top of the machine frame (18) through a shaft set (15) and is provided with mine car rails (24) and a rubber-tired vehicle support face (26). The rear rocker arm platform (17) is fixed with the top of the machine frame (18) through bolts. The locking device is arranged below the rocker arm platform (14) and comprises a locking lower sliding block cover plate (7), a locking lower sliding block (9), a locking upper sliding block (10), a locking oil cylinder front support (11), a locking lower sliding block guide rail (12), a locking inclined rail (13) and a locking oil cylinder (16). The lifting device is arranged below the locking device and comprises a connecting rod lower support (1), a support pawl connecting rod (2), a support pawl push rod (3), a support pawl (5), a support pawl rear end (6), a support oil cylinder rear base (19), a support oil cylinder (20), an anti-collision rear buffer base (21), an anti-collision buffer (22) and a support guide block (23). The lap joint platform is stable in the loading and unloading process, simple to operate and large in steel wire rope compensation height.