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Senior Mechanical Design Engineer – Scissor Lift System (Full Design, Hydraulics, FEA, DIN/EN Compliance), Should be having past track record in same product Atleast designed more than 50+ Scissor Lift --- ### **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: 12 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: 40515369
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24 freelancers are bidding on average $290 USD for this job

Hello, As a Senior Mechanical Engineer, %myname% with over 10+ years of hands-on experience in designing scissor lifts and aerial work platforms, I have a deep understanding of every aspect of project. I have designed more than 50+ scissor lift projects, giving me an unmatched understanding of not just the mechanical aspects but also safety and compliance considerations comprising EN/DIN standards. One of our key strengths at %CompanyName% is our focus on perfection and excellent adherence to deadlines. We appreciate the sensitivity of the task at hand: designing a safety-critical machine like a scissor lift. Bearing that in mind, we will ensure that your scissor lift has a robust design that can thrive in real-world manufacturing environments while meeting all compliance requirements. We would bring our expert Engineering skills to bear thoroughout every stage -- from detailed structural calculations, to hydraulic system design, FEA analysis, and even the development of safety documentation. Our aim is to provide you with comprehensive deliverables that include CAD files, 2D manufacturing drawings (with GD&T), engineering calculation reports, FEA reports and complete hydraulic circuit diagrams. Trust us with your project; we'll turn your vision into a reality that is both artful and precise. Thanks!
$155 USD in 6 days
7.1
7.1

As an experienced mechanical design engineer with over a decade in designing and engineering scissor lifts and a record of successfully completing 50+ projects, I am confident that my skillset aligns perfectly with your requirements for this critical, safety-oriented scissor lift project. My expertise extends from concept design, structural engineering to hydraulic system design and Finite Element Analysis (FEA). Having worked on numerous industrial material handling, aerial work platforms, and scissor lift projects similar to yours, I am adept at the tasks highlighted in your scope of work. From hydraulic cylinder sizing to valve selection and complete hydraulic circuit development, I have hands-on experience that will bring value to our collaboration. Additionally, I have substantial knowledge of DIN/EN compliance standards and machinery directives which is crucial for this project's success. My CAD design competencies (using SolidWorks / Inventor / equivalent) extend to detailed 2D manufacturing drawings with GD&T, BOMs creation as well as assembly designs. Also, my familiarity with ANSYS/SolidWorks Simulation for FEA ensures the safety and robustness of each component. On-time delivery of quality work has been my hallmark and I assure you the same level of commitment for this project.
$120 USD in 3 days
6.8
6.8

With over a decade of experience inf mechanical design specific to scissor lifts like the one described in your project, and having been part of 50+ completed scissor lift designs, I am confident in my ability to deliver exceptional results for you. I am well-versed in all aspects of scissor lift design - from the initial concept and system architecture to structural engineering, hydraulic system design and calculations, finite element analysis (FEA), safety and risk assessment & compliance, right down to CAD design & manufacturing documentation.
$66 USD in 1 day
6.6
6.6

Hi, I can design your scissor lift mechanism with accurate 3D CAD, structural components, and manufacturing-ready drawings. I have 7+ years of experience in mechanical design, lifting equipment, and motion mechanism development. ✔️ Scissor lift CAD design ✔️ Mechanical & structural modeling ✔️ Manufacturing-ready drawings ✔️ STEP, STL, SLDPRT/SLDASM files Portfolio: https://www.freelancer.in/u/xabhix I’m available to start immediately. Could you share the load capacity, lift height, and any reference sketches? Best regards, Abhishek
$150 USD in 4 days
6.4
6.4

Hi, As an experienced mechanical design engineer with a strong track record in mechanical designs, I am confident that I possess the qualifications to successfully manage every aspect of your scissor lift project. With over 10+ years of experience designing scissor lifts and aerial work platforms, I have an intimate understanding of their unique challenges and compliance requirements. With regard to your specific needs, my skillset aligns perfectly with the various stages of your project. From concept design and system optimization, through structural engineering, hydraulic system design, to detailed CAD modeling and producing manufacturing-ready documentation, my expertise will be invaluable. I am particularly adept at FEA simulations using ANSYS or SolidWorks Simulation toolset for stress analysis, deformation study, buckling simulation and validating critical components. Best regards, Sakshi masih
$35 USD in 1 day
5.9
5.9

Dear Client, At Vutuk Design and Media, we combine advanced heavy hardware engineering with rigorous multi-physics simulation and elite technical asset visualization. Supported by a 15-year background spanning industrial machine design, automated multi-printer 3D prototyping, and advanced Finite Element Analysis (FEA), our integrated engineering floor is uniquely positioned to handle your Scissor Lift Mechanical Design project with absolute technical precision. To help us scope your lift equipment requirements precisely, we would like to ask: Do you require structural Finite Element Analysis (FEA) safety factor reports or buckling analysis within Ansys to satisfy international safety standards (e.g., ANSI/SIA)? Are you building an initial physical prototype, and should we concurrently optimize the joint components for multi-material 3D printing visualization in our in-house lab? Would you like a high-end 3D animated promotional video from our media department showcasing a cinematic exploded view, internal force distribution, and a 360-degree interactive operation sweep? We invite you to visit our profile and explore our complete mechanical engineering design, advanced structural simulation, and commercial media portfolio. Sincerely,
$140 USD in 7 days
5.5
5.5

Qualified Engineer with more than 40 years of experience in design and management. 3D CAD designer using Autodesk Inventor 2025, with in-depth knowledge of both designing for production and prototype making. I have worked in the field of hydraulics, pneumatics industry and heavy equipment maintenance. This gives my designs a practical reality. My expertise includes but not limited to, - Design mechanical products. - Design Steel structure and apply stress analysis. - Design hydraulic power units. - Design hydraulic cylinders. - Design hydro-mechanical equipment’s. - I will design the 3D model as DFM basis and provide BOM and manufacture drawings.
$2,230 USD in 30 days
5.1
5.1

Hi, You need a complete engineering design package for a 12 m, 500 kg scissor lift, including kinematics, structural calculations, hydraulic system design, FEA validation, safety analysis, and manufacturing documentation suitable for certification and fabrication. I’m a Mechanical Engineer with 12 years of experience in machine design, SolidWorks, ANSYS FEA, structural analysis, and hydraulic-mechanical systems. My approach is to begin with mechanism optimization and stability analysis, then develop the hydraulic architecture, perform buckling and stress calculations, validate critical components through FEA, and finally generate production-ready CAD models, BOMs, and manufacturing drawings. A similar project involved a hydraulic lifting platform where I performed buckling verification, pin/joint sizing, cylinder force calculations, and ANSYS structural validation under multiple load cases. Deliverable detail: complete calculation package correlated with FEA results and linked to the final CAD design. Initial concept and engineering calculations can be delivered within 7–10 days, followed by review-driven revisions at each design milestone. For a 12 m lift height, are you targeting a mobile aerial work platform or a fixed industrial lifting table? The answer will significantly affect stability requirements, cylinder arrangement, and EN 280 compliance strategy. I can also prepare a preliminary mechanism layout and load path study before detailed design begins.
$60 USD in 3 days
4.6
4.6

Hello, I've reviewed your project and understand this is a safety critical scissor lift design that requires far more than CAD modeling. The work involves complete system engineering including kinematic design, structural calculations, hydraulic sizing, FEA validation, stability analysis, and compliance driven documentation suitable for manufacturing and review. I can support the full development process from concept architecture through detailed engineering, ensuring the scissor geometry, hydraulic system, load paths, critical joints, and safety mechanisms are evaluated as an integrated system rather than as separate components. The deliverables will be structured around practical manufacturability, engineering traceability, and compliance requirements, including CAD models, calculation packages, FEA results, hydraulic schematics, BOMs, and production documentation. I have worked on complex mechanical design and engineering projects and can share relevant examples once we connect. Also a quick question, is the 12 m lift height required at full 500 kg payload without any reduction in platform capacity throughout the entire stroke? Best Regards, Muskan
$30 USD in 1 day
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 many industrial projects earlier for manufacturing, 3d printing and presentation purposes. I am a mechanical design engineer with 12+ extensive 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, Blender and Keyshot for rendering. Please get in touch with me to discuss this project in more detail. I appreciate your consideration. Best regards, Buddhika
$195 USD in 5 days
3.9
3.9

Hi there, I noticed that you need a complete scissor lift system design including structural calculations, hydraulic engineering, FEA validation, EN/DIN compliance review, and manufacturing-ready CAD documentation. I’ve completed complex mechanical equipment and heavy-duty structural design projects before with similar engineering requirements. As a skilled Mechanical Design Engineer with over 7 years of experience, I specialize in precise, high-quality 3D CAD modeling, structural analysis, hydraulic system design, and manufacturing documentation using SolidWorks, AutoCAD, ANSYS, and FEA tools. I also provide detailed calculation reports, BOMs, fabrication drawings, and safety-focused engineering solutions tailored to industrial lifting equipment. I’m happy to share relevant plans and samples upon request. This is my portfolio link: https://www.freelancer.com/u/andrasr69 I am looking forward to work with you. Best regard. Andres
$100 USD in 2 days
3.5
3.5

As a seasoned Mechanical Design Engineer with over a decade's worth of experience in designing scissor lifts and material handling equipment, I'm excited about the opportunity to design your scissor lift system from scratch. Having successfully designed more than 50 scissor lifts that have been deployed across diverse industrial sectors, my expertise spans the full gamut of this cumulative project – from hydraulic system design through finite element analysis (FEA), ensuring stringent structural integrity, and overall compliance with the relevant DIN/EN standards.
$45 USD in 1 day
3.9
3.9

I understand you need a comprehensive mechanical design for a **scissor lift system**, covering everything from initial concept to detailed engineering, including **hydraulic system design** and **DIN/EN compliance**. My experience includes successfully completing the full design cycle for over 70 industrial lifting platforms, ensuring all structural integrity and safety regulations were met. I will deliver a complete CAD model of the scissor lift mechanism and its associated hydraulic components using SolidWorks. This will include detailed part drawings, assembly instructions, and a comprehensive Bill of Materials. I will also perform structural **FEA** on critical components and a detailed hydraulic circuit schematic, all validated against relevant **DIN/EN** safety standards. What is the target payload capacity and maximum working height for this scissor lift? Ready to start as soon as you confirm scope.
$175 USD in 21 days
2.3
2.3

1. Experience with scissor lifts / aerial platforms I have not designed hydraulic scissor lifts directly, but I have designed multiple mechanical lifting and load-bearing mechanisms, crane systems, and heavy steel structures subject to moving and dynamic loads. These include pump crane systems (500 kg–2 tons), industrial lifting frames, and mechanically actuated support structures. 2. EN 280 or similar standards While I have not executed a full EN 280-certified scissor lift, I have designed safety-critical structures such as a 32-ton nuclear reactor door, including static and seismic load cases, and municipal lifting systems reviewed under public authority requirements. 3. Sample calculations / FEA I have produced detailed hand calculations and FEA reports (ANSYS, SolidWorks Simulation, SAP2000) for projects such as a 31-ton glass lifting traverse, coal washing plant steel structures, and heavy machine frames. Sample reports can be shared. 4. Lifting force / actuator methodology My designs are based on full load paths, worst-case positioning, dynamic amplification, and safety factors. I have applied this methodology to mechanically driven lifting systems and pneumatic systems (belt press). 6. Safety factors I typically apply minimum FoS of 3-5 for static, higher for dynamic and buckling-critical members, justified by calculations and FEA. Reference projects, calculation reports, and company details are available upon request.
$1,400 USD in 20 days
0.0
0.0

مرحباً، يسعدني تقديم عرض لتنفيذ تصميم هندسي متكامل لنظام Scissor Lift من مرحلة المفهوم وحتى التصميم التفصيلي الجاهز للتصنيع، مع التركيز على السلامة، الكفاءة الميكانيكية، والالتزام الكامل بمعايير DIN/EN الخاصة بالمعدات الرافعة. سأعمل على تطوير تصميم هندسي احترافي يأخذ بعين الاعتبار طبيعة الاستخدام الخارجي، ارتفاع الرفع المطلوب (12 متر)، وحمولة 500 كغ، مع ضمان تحقيق أعلى مستويات الاستقرار الهيكلي والأمان التشغيلي. نطاق العمل يشمل: • تصميم المفهوم (Concept Design) وهيكل النظام الميكانيكي بالكامل. • تحليل الحركة (Kinematic Analysis) لنظام المقص واختيار التكوين الأنسب. • تصميم وتحليل الهيكل (Structural Design & Calculations) لضمان تحمل الأحمال. • تحليل الاستقرار ومركز الثقل ومنع الانقلاب (Stability & Tipping Analysis). • تصميم النظام الهيدروليكي بما في ذلك اختيار الأسطوانات والمضخات. • إجراء تحليل العناصر المحدودة (FEA) لتقييم الإجهادات ونقاط الضعف. • الالتزام بمعايير DIN/EN ذات الصلة بالمعدات الرافعة والمنصات العاملة. • إعداد رسومات تفصيلية جاهزة للتصنيع (Manufacturing Drawings). • إعداد تقرير هندسي كامل يوضح الفرضيات والحسابات والسلامة. سأحرص على أن يكون التصميم عملياً وقابلاً للتنفيذ الصناعي وليس نظرياً فقط، مع التركيز على تقليل الوزن غير الضروري وتحسين كفاءة الحركة وعمر النظام التشغيلي. يمكنني العمل باستخدام أدوات هندسية احترافية مثل SolidWorks وANSYS وAutoCAD لضمان دقة التحليل وجودة المخرجات، مع إمكانية تقديم مراجعات تصميمية مرحلية لضمان الوصول لأفضل حل ممكن قبل مرحلة الإنتاج. مع خالص التقدير.
$500 USD in 7 days
0.0
0.0

With over extensive years of experience in mechanical design, specializing in Project like ATV Designing, Agriculture Machines Prototyping, and Machinery Design and Simulation, I am well-versed with the complexities involved in creating safe and practical mechanized systems. I have extensive proficiency in SolidWorks which ensures superior 3D modeling accuracy and precision. Moreover, my expertise in Finite Element Analysis guarantees that your scissor lift design will be structurally sound and can withstand all kinds of challenging scenarios. One of my standout skills is hydraulic systems design and calculations - an essential aspect for your scissor lift project. My profes ionally skilled at developing full hydraulic circuit designs, sizing cylinders, calculating pressures, selecting suitable valves and ensuring efficiency and thermal considerations. Additionally, I am well-familiar with DIN/EN regulations- having implemented them on various projects including Elevated structures where safety is paramount. In conclusion, by choosing me for this project you would not only leverage my extensive experience but also ensure a smooth process with clear documentation at every stage. My diligence extends beyond project completion as I provide continued assistance even after project handover to ensure satisfaction. Let's collaborate to make this scissor lift system meets the highest industrial standards
$120 USD in 7 days
0.0
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Riyadh, Saudi Arabia
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