Auto-Lock Hydraulic Hoist Cylinder for Confined-Space Locking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hydraulic hoist locking devices are inconvenient for manual operation in poor environments and small spaces, with reliability issues due to complex mechanisms and frequent wear, limiting their applicability and safety.
Innovation Solution
An auto-lock hydraulic hoist cylinder device with a lock actuator, transmission mechanism, and load-bearing mechanism, featuring a two-way hydraulic cylinder, rack, and gear system, along with an electromagnetic bolt for remote operation, which reduces space requirements and enhances reliability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manually operated locking mechanisms are used, then the device can be operated without additional power sources, but the operation becomes inconvenient in poor environments and small spaces
Solution Approach 1:
The patent replaces manual mechanical operation with an automated locking mechanism driven by a motor. The motor-driven locking shaft rotates to engage or disengage locking teeth with the locking groove, eliminating the need for manual cranking or lever operation. This substitution resolves the contradiction by providing automated operation (improving ease of operation) while using a compact motor design (controlling device complexity).
Solution Approach 2:
The locking mechanism is designed to automatically engage and lock when the motor-driven locking shaft rotates into position. The locking teeth and groove automatically mate without requiring manual intervention to secure the locked state. This self-locking feature improves operational convenience while reducing the complexity of additional manual securing mechanisms.
2Reliability
If locking devices with link mechanisms are used, then the locking function can be achieved, but reliability deteriorates due to more parts and frequent operation wear
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: a motor-driven locking shaft with locking teeth, a separate locking groove in the piston rod, and a minimal connection through the cylinder body. This segmentation allows each component to be optimized independently, reducing wear at critical interfaces while maintaining overall reliability. The modular design reduces the number of interconnected parts compared to traditional link mechanisms.
Solution Approach 2:
The patent extracts and eliminates complex link mechanisms from the locking system. Instead of using multiple connected links and joints, the design directly engages the locking shaft with locking teeth against the locking groove, removing unnecessary intermediate components. This extraction of essential functions reduces the number of parts and potential failure points, thereby improving reliability.
3Adaptability or versatility
If traditional locking mechanisms are arranged in narrow spaces, then space utilization is achieved, but applicability is poor due to poor environment and small space constraints
Solution Approach 1:
The locking shaft and locking mechanism are nested within the existing cylinder structure. The locking shaft rotates within the cylinder body, and the locking groove is integrated into the piston rod, which is already inside the cylinder. This nesting approach allows the locking mechanism to occupy minimal additional space while maintaining full functionality in confined environments.
Solution Approach 2:
The locking mechanism transitions from linear or lateral space occupation to rotational motion within the existing cylindrical space. The locking shaft rotates around its axis to engage the locking groove, utilizing the radial dimension of the cylinder rather than requiring additional linear space. This dimensional approach enables compact integration suitable for narrow spaces and confined environments.
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 solution enables efficient and safe operation in confined and challenging environments by reducing space occupation, optimizing torque and pressure, and ensuring reliable locking and unlocking mechanisms, improving maintenance and operator safety.
Implementation Method 1
a hydraulic cylinder, comprising: a cylinder body (100), a piston (200) arranged inside the cylinder body (100), a piston rod (300) connected to one side of the piston (200)
Implementation Method 2
a gear (120) meshed with the rack (110), a locking shaft (130) provided integrally with a lower end of the gear (120)
Data Source
AI summary
The invention provides an auto-lock hydraulic hoist cylinder device, comprising: a lock actuator, a lock transmission mechanism and a load-bearing mechanism, wherein the load-bearing mechanism includes load-bearing locking shaft, a load-bearing nut is provided on the load-bearing locking shaft, installed on the upper side of the upper end cover of the main hydraulic hoist, a number of protrusions is provided on the lower end of the load-bearing locking shaft, a locking cover is provided with a through hole for the load-bearing locking shaft to pass through, a groove for matching the protrusions is provided on the side wall of the through hole, a piston rod is fixed on the lower end of the locking cover, the lock actuator is provided on the upper end cover, the lock actuator drives the load-bearing locking shaft through the lock transmission mechanism.