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Senior Mechanical Design Engineer – Scissor Lift System (Full Design, Hydraulics, FEA, DIN/EN Compliance) --- ### **Project Overview** We are looking for a **highly experienced mechanical design engineer or engineering consultant** to design a **scissor lift system** from concept through detailed engineering, including structural calculations, hydraulic system design, and full safety evaluation in accordance with applicable DIN/EN standards. This is a **safety-critical machine**, and the design must be suitable for real-world manufacturing and compliance certification. --- ### **Design Requirements (To Be Finalized with Engineer)** * Application: Industrial / Material Handling / Aerial Work Platform (to be confirmed) * Lifting Height: 18 m * Load Capacity: 500 Kg * Platform Size: TBD * Duty Cycle: TBD * Indoor / Outdoor Use: Outdoor * Power Source: Electric / Hydraulic / Hybrid --- ### **Detailed Scope of Work** #### **1. Concept Design & System Architecture** * Selection and design of scissor mechanism configuration (single-stage / multi-stage) * Kinematic analysis of lifting motion * Optimization of geometry for stroke vs height ratio * Load distribution across scissor arms * Stability analysis (base width, center of gravity, tipping conditions) --- #### **2. Structural Engineering & Calculations** * Complete engineering calculations including: * Static load analysis * Dynamic load cases (impact, start/stop, uneven loading) * Buckling analysis of scissor arms * Shear and bending stress analysis * Pin, joint, and weld strength calculations * Selection of material grades and thickness * Factor of safety justification based on standards * Compliance with relevant structural codes --- #### **3. Hydraulic System Design & Calculations** * Full hydraulic circuit development * Hydraulic cylinder sizing (force, stroke, pressure) * Flow rate and pump sizing calculations * Pressure loss estimation * Valve selection: * Directional control valves * Flow control valves * Counterbalance / safety valves * Design of emergency lowering system * Hose and fitting specification * System efficiency and thermal considerations --- #### **4. Finite Element Analysis (FEA)** * Structural simulation using tools such as ANSYS / SolidWorks Simulation * Stress and deformation analysis under worst-case loading * Buckling simulation of scissor members * Validation of critical components (arms, pins, base frame, platform) * Correlation of FEA results with hand calculations --- #### **5. Safety, Risk Assessment & Compliance** * Design in accordance with: * EN 280 * Applicable DIN standards and machinery directives * Risk assessment (hazard identification and mitigation) * Anti-tipping and overload protection considerations * Mechanical locking / safety supports * Emergency stop and fail-safe mechanisms * Redundancy in hydraulic system where required --- #### **6. CAD Design & Manufacturing Documentation** * 3D CAD modeling (SolidWorks / Inventor / equivalent) * Assembly design with proper constraints and motion validation * 2D manufacturing drawings with: * GD&T (Geometric Dimensioning & Tolerancing) * Weld details * Surface finishes * Bill of Materials (BOM) * Exploded views and assembly instructions --- #### **7. Deliverables** * Complete 3D CAD files * Detailed 2D drawings (manufacturing-ready) * Engineering calculation report (well-documented) * FEA reports with assumptions and results * Hydraulic circuit diagrams * Component selection list (cylinders, valves, etc.) * Safety and compliance documentation --- ### **Required Qualifications & Experience** * Minimum **10+ years** in mechanical design of: * Scissor lifts / lifting tables * Aerial work platforms * Strong expertise in: * Finite Element Analysis * Hydraulic system design and calculations * Proven experience working with DIN/EN standards (especially EN 280 or equivalent) * Proficiency in CAD tools (SolidWorks, Inventor, or equivalent) * Ability to produce calculation reports suitable for engineering review or certification --- ### **Mandatory Screening Questions (Must Answer)** 1. Describe your experience with Scissor Lift / Aerial Work Platform 18 m Height 2. Have you designed systems compliant with EN 280 or similar standards? Provide details 3. Share a sample calculation report (FEA + manual calculations) 4. Explain your methodology for hydraulic cylinder sizing in scissor lifts 5. How do you ensure stability and prevent tipping under uneven loads? 6. What safety factors do you typically apply ### **Important Notes** * Only candidates with **relevant project experience** will be considered * Generic CAD designers without calculation or hydraulic experience will be rejected * This is a **safety-critical project**, requiring high engineering rigor
Project ID: 40393212
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21 freelancers are bidding on average $282 USD for this job

As a mechanical design engineer with 10+ years of experience in the development of lifting systems and adherence to DIN/EN safety standards, I bring an extensive skillset to this project. I have a profound understanding of hydraulic system design, calculation, and optimization – critical components for ensuring your scissor lift system operates at maximum efficiency and meets the exacting requirements you've outlined. My rich background in Finite Element Analysis (FEA) will also enable me to validate your design all the way down to the smallest pin or weld joint, ensuring its durability and structural integrity. Utilizing powerful CAD tools like SolidWorks and Inventor, I can deliver detailed 3D models and manufacturing-ready 2D drawings of the highest quality. My working experience has sharpened my eye for detail which will be invaluable when producing precise engineering calculations and reports as per your request. Additionally, I am well-versed in compliance with DIN standards and have diligently carried out hazard identification and mitigation, prioritizing safety above all else – qualities crucial for such a safety-critical project.
$120 USD in 3 days
6.8
6.8

Hi there, I would be happy to assist with your Scissor Lift Design project. With expertise in mechanical design, structural engineering, CAD modeling, and FEA validation, I can deliver a safe, efficient, and manufacturable scissor lift solution tailored to your load and lifting requirements. Scissor lifts use linked X-pattern mechanisms to create vertical motion and are commonly driven by hydraulic, electric, pneumatic, or screw systems. � Wikipedia +1 Approach: Review required load capacity, lift height, platform size, duty cycle, and operating environment. Develop complete scissor lift mechanism concept with actuator selection (hydraulic/screw/electric). Perform design calculations for link forces, stability, pin joints, buckling, and safety factor. Create detailed 3D CAD model and fabrication drawings. Run FEA for critical members, welds, pivots, and base frame. Optimize for smooth motion, compact storage height, and manufacturability. Deliverables: Complete scissor lift mechanical design 3D CAD assembly and part files Engineering calculations report Structural/FEA validation report Manufacturing drawings with BOM Revision support Timeline: To be determined after discussing project scope. Budget: Open to negotiation based on complexity. Looking forward to collaborating on this project. Let’s connect to discuss further. Best regards, Arati M.
$140 USD in 7 days
6.3
6.3

With over a decade in the mechanical engineering industry, I have gained invaluable experience in diverse sectors, giving me the necessary versatility and adaptability to cater to your needs. Throughout my career, I have specialized in product design and development across various fields including HVAC, automaking, and oil & gas. This broad range of industries has honed my problem-solving skills, providing me with unique solutions-oriented thinking that can be applied to your scissor lift project. Notably, I have strong expertise in Finite Element Analysis (FEA) as well as hydraulic system design and calculations - two key components for your project's success. My understanding of scissor lifts is profound, having designed many lifting systems and aerial work platforms throughout my career. Additionally, I leverage leading CAD software like Solidworks (CSWP certified) and Creo to deliver accurate 3D designs and detailed 2D manufacturing drawings that adheres to even the most stringent standards like DIN/EN. In recognition of your project's nature as a safety-critical machine requiring full adherence to relevant codes and regulations, I assure you of meticulous consideration of every detail from load analysis under varying conditions to compliance documentation. My ultimate goal is to deliver not just a final design but a comprehensive engineering package that meets or exceeds your expectations.
$250 USD in 5 days
6.2
6.2

Hi, I’m a multidisciplinary engineer focused on design + analysis, delivering production ready CAD and simulation-backed solutions. I work across mechanical and architectural scopes, with clear drawings, practical detailing, and fast communication. Feel free to check my profile for similar projects ,happy to review your scope and suggest the best next steps. G. Zaralı
$980 USD in 7 days
6.2
6.2

I am an experienced engineer specializing in ANSYS simulations, offering advanced computational modeling and analysis services to support design validation, optimization, and failure prevention. Using ANSYS Workbench, Mechanical, and Fluent, I can deliver accurate results through structural, thermal, and fluid flow studies, vibration analysis, and failure prediction. Specialized in; 1) 3D model setup and meshing in ANSYS 2) Static structural and thermal analysis 3) CFD simulation for fluid flow and heat transfer 4) Modal and harmonic vibration analysis 5) Fatigue and failure evaluation 6) Optimization and design improvement recommendations 7) Comprehensive technical report with results and conclusions
$140 USD in 3 days
5.8
5.8

Hi, What is the preferred scissor mechanism (single-stage or multi-stage) and exact platform size for the 18m lift height and 500kg capacity? Have you confirmed the duty cycle and any specific base width constraints for outdoor stability? I'm Mohand, a licensed Mechanical Engineer and FEA expert with over 10 years designing safety-critical scissor lifts and aerial work platforms, including multiple 18m+ systems for industrial material handling compliant with EN 280 and DIN standards. My experience includes full kinematic analysis, buckling-resistant arm optimization, and dynamic load calculations ensuring factor-of-safety >2.5 under uneven loading and tipping scenarios. I've delivered complete SolidWorks models, hydraulic circuits (cylinder sizing via force/stroke/pressure calcs with counterbalance valves), ANSYS/SolidWorks Simulation FEA reports correlating to hand calcs, and manufacturing-ready drawings with GD&T/BOM for real-world certification
$1,000 USD in 7 days
5.5
5.5

I am here to bring your product to life. I'm a mechanical engineer with 11 years of experience designing industrial product, furniture product, plastic product and machine, automatic system Experience type: 3D, 2D models, Render, Sheet Metals, Machines and Devices, Industrial Products, Plastic Molds, Plastic Parts Software program: Autodesk Inventor, Solidworks, Autocad , NX-Siemens I am always glad to cooperate, I guarantee quick lead-time, information of the project is always confidential . Your project will be developed with speed and high quality, as well as all the jobs already accomplished. Please send me a message.
$250 USD in 7 days
5.6
5.6

Hello, We are Vutuk Design and Media, a design and engineering company specializing in mechanism design, industrial equipment, and FEA-driven development. We can design a high-performance scissor lift system optimized for load capacity, stability, and operational efficiency. Scissor lifts require careful integration of structure, actuation, and control systems to ensure safe and reliable lifting performance . Our team focuses on key engineering parameters such as linkage geometry, actuator force requirements, pivot durability, and base stability to deliver a well-balanced and efficient system. We follow a structured workflow including concept design, kinematic validation, CAD modeling, and optional simulation (FEA/motion) to ensure real-world reliability. Proper design ensures stability, efficient load handling, and long service life in industrial applications . Deliverables include complete CAD assemblies, manufacturing drawings, and optional simulation reports. To align with your project goals: What is the application (industrial lift table, platform, custom mechanism)? What load, stroke height, and duty cycle should be considered? Do you have reference designs or should we develop from concept? Do you require detailed simulation and optimization? We would love to support your project from concept to production-ready design. Please visit our profile to explore our portfolio and capabilities. Looking forward to collaborating with you.
$140 USD in 7 days
5.5
5.5

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Expert Mechanical design Engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Product Design | 3D CAD Modelling FEA | CFD Thermal analysis | Structural analysis HVAC and Heat load calculation We are proficient in using following software’s: AUTOCAD SOLIDWORKS ABAQUS ANSYS APDL | ANSYS Fluent MATLAB | SIMULINK COMSOL Multiphysics FUSION360 | CATIA We have good command over REPORT WRITING, we can show you many samples of our previous reports. We can discuss further details in the message box.
$140 USD in 7 days
4.8
4.8

Hi, I'm Juli, a 3D design specialist. I've read your job description and I’m confident I can help. I have solid experience with SolidWorks, Fusion 360, and rendering tools like KeyShot. I focus on precision, fast delivery, and clear communication. I understand the requirements of Design Scissor Lift and how to approach it effectively. You can also see similar work on my portofolio. Looking forward to hearing from you. Best regards, Juli
$80 USD in 1 day
4.6
4.6

Hi, I reviewed your brief, and this is a full engineering responsibility, not just CAD or isolated calculations. I can handle end-to-end design of the scissor lift, from kinematics and structural analysis to hydraulic system sizing and EN 280–aligned safety considerations. The approach will combine validated hand calculations with FEA to ensure load paths, buckling behavior, and joint integrity are properly accounted for. Hydraulics will be designed around real operating conditions, including redundancy, fail-safes, and stable control under dynamic loads. You’ll receive complete CAD, manufacturing drawings, calculation reports, and documentation structured for compliance and review. Once we connect, I can walk you through similar systems and how I’d structure this build from concept to certification-ready. Quick question, do you have any baseline constraints (platform size, base footprint, or transport limits) defined yet? Best regards, Muskan
$50 USD in 2 days
4.2
4.2

Hello, I hope this message finds you well. My name is Rade, and I am a mechanical engineer based in Belgrade, Serbia, with over nine years of experience in the field. I have completed many projects throughout my career, primarily utilizing SolidWorks software. My portfolio showcases several projects across various sectors, including the military, food, and pharmaceutical industries. Each project required a high level of professionalism and expertise in mechanical engineering. After reviewing your project, I am confident that I can assist you in developing an effective solution. I invite you to explore my portfolio, where you may find relevant projects that align with your needs. To ensure the best outcome, I would appreciate any additional information, ideas, or drawings you may have regarding the project. This will help me gain a deeper understanding of your specific goals. I look forward to collaborating on this project and future endeavors. Best regards, Rade
$140 USD in 7 days
4.1
4.1

Hi, I have designed this type of special industrial products earlier. I am a mechanical design engineer with 12 years experience in 3D modeling and 2D drawings, particularly in the semi-trailer and machine design industries. I can create detailed 3D models with 2D drawings, based on the engineering details and your requirements. I use SolidWorks, PTC Creo and Keyshot for rendering. Please get in touch with me to discuss this project in more detail. I appreciate your consideration. Best regards, Buddhika
$190 USD in 5 days
3.8
3.8

Dear Client I hope this message finds you well. I am writing to express my interest in the job you posted. With 14 years of experience in mechanical design and a strong background in CAD software and product development, I am confident in my ability to contribute effectively to your project and deliver high-quality solutions. I specialize in mention specific areas like 3D modeling, product design, stress analysis, etc.], and have extensive experience working with tools such as SolidWorks, AutoCAD, CATIA, and Fusion 360. My focus is on creating efficient, reliable, and cost-effective designs while maintaining the highest standards of quality. A few key highlights of my qualifications include: • Expertise in 3D CAD modeling and mechanical assemblies. • Experience with finite element analysis (FEA) and stress analysis for optimal product performance. • A strong understanding of materials selection, manufacturing processes, and prototyping. • Excellent communication skills, ensuring that your requirements are fully understood and incorporated into the design. I am passionate about collaborating with clients to bring their ideas to life, and I take pride in my ability to deliver within deadlines while exceeding expectations. I would love the opportunity to discuss how my skills can contribute to your project’s success. Thank you for considering my application. I look forward to the possibility of working together! Best regards, Dheeraj kumar
$250 USD in 1 day
2.2
2.2

Hi, I understand you need a senior mechanical design engineer to take an 18 m scissor lift from concept through detailed engineering, with full structural calculations, hydraulic design, FEA validation, safety review, and manufacturing documentation suitable for certification and real world production. This is a safety critical system, so the design must address kinematics, buckling, pin and weld checks, cylinder sizing, stability under uneven loading, and compliance with EN 280 and related DIN standards. I have strong experience in lifting equipment and heavy mechanical systems involving steel structures, hydraulic actuation, FEA, and code based design. My past work includes scissor type lifting mechanisms, structural frames, hydraulic power systems, and detailed calculation packages that combine manual engineering checks with simulation. I am comfortable defining safety factors, reviewing overturning risk, sizing cylinders from worst case geometry, and preparing documentation suitable for engineering review. I can deliver complete 3D CAD models, manufacturing drawings, hydraulic schematics, calculation reports, FEA summaries, component selection notes, and clear safety documentation. I can also address your screening points directly by outlining my scissor lift methodology, EN 280 compliance approach, hydraulic sizing logic, and stability verification process within the proposal package. Warm regards, Juan
$140 USD in 7 days
0.0
0.0

Riyadh, Saudi Arabia
Member since Jan 24, 2023
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