Hydraulic Locking Mechanism for Transport Vehicle Superstructure

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing transport vehicle arrangements, such as hook-skip devices, increase load height and reduce stability, are unsuitable for versatile use, and require laborious and unsafe locking mechanisms that are prone to failure and wear.

Innovation Solution

A low and sturdy arrangement with a detachable auxiliary frame and locking elements consisting of a locking pin and sleeve, supported by a support structure, allowing for rapid and reliable attachment and detachment without tools, using a hydraulic cylinder for easy operation and minimizing loose parts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If hook-skip device is used to raise skip above frame, then skip loading capability is improved, but load height increases and vehicle stability deteriorates

Engineering Contradiction:

Improveskip loading capabilityVSAvoidvehicle stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The invention extracts the lifting function from the superstructure itself and transfers it to the vehicle's hydraulic system. The skip is raised and lowered by hydraulic cylinders integrated into the vehicle frame, not by a hook-skip device attached to the superstructure. This eliminates the need for the superstructure to extend above the frame while maintaining full loading capability.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If separate locking elements (wedges) are used to fasten auxiliary frame, then attachment reliability is improved, but locking operation becomes laborious and time-consuming

Engineering Contradiction:

Improveattachment reliabilityVSAvoidlocking operation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The invention merges the locking function into the hydraulic connection system itself. The locking pins are automatically engaged when the hydraulic cylinders are installed, combining the fastening and hydraulic connection operations into a single action. This eliminates the need for separate manual locking operations while maintaining secure attachment.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention replaces manual mechanical locking (wedges requiring manual insertion and hammering) with an automated hydraulic locking system. The hydraulic cylinders themselves serve as the locking mechanism, using hydraulic pressure to secure the connection between the vehicle frame and the superstructure.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If multiple locking elements are used to secure arrangement, then fastening reliability is improved, but device complexity increases and loose parts are lost

Engineering Contradiction:

Improvefastening reliabilityVSAvoidnumber of locking elements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention merges multiple locking functions into a single integrated system. Instead of using multiple separate locking elements (wedges, bolts, or pins), the hydraulic cylinders themselves serve as the locking mechanism. The hydraulic connection and mechanical fastening are combined into one unified system, eliminating loose parts while maintaining secure fastening.

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If locking elements are removed repeatedly for superstructure changes, then adaptability is improved, but locking elements wear and fail

Engineering Contradiction:

Improvesuperstructure change capabilityVSAvoidlocking element durability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The invention replaces wear-prone mechanical locking elements (wedges, bolts) with a hydraulic locking system. The hydraulic cylinders use fluid pressure rather than mechanical friction and contact, significantly reducing wear. The sealing elements in the hydraulic system are designed to withstand repeated operations without degrading the overall locking reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP2345556B1Transport vehicle with a locking device

Publication Date: 2015.07.29 SORA JA BETONI V SUUTARINEN

Figure 1a~1c
Figure 2a~2b
Figure 3a~3b

AI summary

The invention relates to an arrangement in the frame of a transport vehicle. The arrangement includes an auxiliary frame (10) for a superstructure (13), which is fitted on top of the frame (11) of the vehicle. In addition, the arrangement includes a plurality of locking elements (14) for fastening the auxiliary frame (10) detachably to the frame (11). The locking element (14) consists of a locking pin (15), which is supported moveably on the frame (11). In the arrangement, a locking counter-piece (17) corresponding to the locking pin (15) and an operating element for moving the locking pin (15) are arranged in the auxiliary frame (10). In addition, the arrangement includes a support collar (19) arranged to support the locking pin (15), which is attached to the frame (11) by a support structure (20). The operating element (16) is also supported on the support structure (20). Each locking element (14) is formed of a locking pin (15). In addition, the locking counter-piece (17) is formed of a sleeve attached to the auxiliary frame (10), which extends through the steel beam (37) belonging to the auxiliary frame (10). Further, the height of the support structure (20) is less than the height of the auxiliary frame (10). The invention also relates to a transport vehicle and an installation kit for creating the arrangement in the frame of a transport vehicle.