GB/T 39980-2021 English PDFUS$3219.00 · In stock
Delivery: <= 16 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 39980-2021: Mechanical parking system - Design rules Status: Valid
Basic dataStandard ID: GB/T 39980-2021 (GB/T39980-2021)Description (Translated English): Mechanical parking system - Design rules Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J80 Word Count Estimation: 174,111 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 39980-2021: Mechanical parking system - Design rules---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Mechanical parking system-Design rules ICS 53.020.99 J80 National Standards of People's Republic of China Design specification for mechanical parking equipment Released on 2021-04-30 2021-11-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee Table of contentsForeword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 3 4 Rating 3 5 Calculation of loads and load combinations 6 6 Structure 25 7 Machinery 64 8 Electrical 98 9 Security 104 Appendix A (informative appendix) Mechanical parking equipment organization classification 119 Appendix B (informative appendix) Selection of steel impact toughness parameters 120 Appendix C (informative appendix) Connection stiffness calculation under tensile load 122 Appendix D (Normative Appendix) The calculated length of compression members and the converted slenderness ratio of lattice members 124 Appendix E (Normative Appendix) Stability Coefficient of Axial Compression Components 127 Appendix F (Normative Appendix) Lateral Buckling Stability Coefficient of Bending Members (Overall Stability Coefficient) 132 Appendix G (informative appendix) Calculation of the overall stability of compression-bending members 135 Appendix H (Normative Appendix) The buckling coefficient in the calculation of the local stability of thin plates 137 Appendix I (Normative Appendix) Curve slope constant m and characteristic fatigue strength Δσc, Δτc 140 Appendix J (Normative Appendix) Fatigue limit design stress ΔσRd, ΔτRd, 1 161 Appendix K (informative appendix) Slewing ring selection and related calculation of installation bolts 163 Appendix L (Normative Appendix) Design Requirements for Parking Space Dimensions and Safety Space 166 Appendix M (Normative appendix) Requirements for the setting of safety protection devices 168 Design specification for mechanical parking equipment1 ScopeThis standard specifies the basic classification of mechanical parking equipment, calculated load and load combination, structure, machinery, electrical and safety, etc. Design criteria and calculation methods. This standard applies to all types of mechanical parking equipment (hereinafter referred to as parking equipment) defined in GB/T 26476, but does not involve the above-mentioned parking equipment. Special problems of vehicle equipment.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 699-2015 High-quality carbon structural steel GB/T 700-2006 Carbon structural steel GB/T 755 Rotating motor rating and performance GB/T 985.1 Recommended grooves for gas welding, electrode arc welding, gas shielded welding and high energy beam welding GB/T 985.2 Recommended Groove for Submerged Arc Welding GB/T 1231 Technical requirements for high-strength large hexagon head bolts, large hexagon nuts and washers for steel structures GB/T 1243 Short pitch precision roller chains, bushing chains, accessories and sprockets for transmission GB/T 1348-2009 Ductile iron castings GB/T 1591-2018 Low-alloy high-strength structural steel GB/T 1800.2-2020 Product Geometric Technical Specification (GPS) Linear Dimension Tolerance ISO Code System Part 2.Standard Tolerance zone code and limit deviation table of hole and shaft basis of deviation and fit GB/T 2585-2007 Hot rolled steel rail for railway GB 2894 Safety signs and guidelines for their use GB/T 3077-2015 Alloy structural steel GB/T 3098.1 Mechanical properties of fasteners bolts, screws and studs GB/T 3098.2 Mechanical properties of fasteners nuts GB/T 3480 Involute cylindrical gear load capacity calculation method GB/T 3632 Torsion shear type high-strength bolt connection pair for steel structure GB/T 3766 General rules and safety requirements for hydraulic transmission systems and their components GB/T 3811-2008 Crane Design Code GB/T 4171-2008 Weathering structural steel GB/T 4208-2017 Enclosure protection grade (IP code) GB/T 4942.1-2006 Degree of protection for the overall structure of rotating electrical machines (IP code) Classification GB/T 5117 Non-alloy steel and fine grain steel welding rod GB/T 5118 hot-strength steel electrode GB/T 5226.32-2017 Electrical Safety of Machinery Part 32.Technical Requirements for Lifting Machinery GB/T 5277 Fastener Bolt and Screw Through Hole GB/T 5293 Non-alloy steel and fine grain steel solid wire, flux-cored wire and welding wire-flux combination classification requirements for submerged arc welding GB/T 5313-2010 Thickness direction performance steel plate GB/T 6074 plate chain, connecting ring and sheave size, measuring force and tensile strength GB 7588 Safety Code for Elevator Manufacturing and Installation GB/T 8110 Non-alloy steel and fine-grain steel solid welding wire for MIG/GAW GB/T 8350 Conveyor chain, accessories and sprockets GB/T 8903 Steel wire rope for elevator GB/T 8918 Wire Rope for Important Uses GB/T 9439-2010 Gray iron castings GB/T 10045 Non-alloy steel and fine grain steel flux-cored welding wire GB/T 10059-2009 Elevator test method GB/T 10062 (all parts) calculation method for load carrying capacity of bevel gears GB/T 11264-2012 hot rolled light rail GB/T 11352-2009 Cast carbon steel parts for general engineering GB/T 12470 Submerged arc welding heat-strength steel solid wire, flux-cored wire and welding wire-flux combination classification requirements GB/T 14048.4 Low-voltage switchgear and control equipment Part 4-1.Contactors and motor starters electromechanical contactors And motor starter (including motor protector) GB/T 14048.10 Low-voltage switchgear and control equipment Part 5-2.Control circuit appliances and switching element proximity switches GB/T 14408 Low-alloy steel castings for general engineering and structure GB/T 14957 Steel wire for fusion welding GB/T 15969.1 Programmable Controller Part 1.General Information GB/T 16754 Design Principles of Mechanical Safety Emergency Stop GB/T 17493 Heat-strength steel flux-cored welding wire GB 17799.3 General Standard for Electromagnetic Compatibility Emissions in Residential, Commercial and Light Industrial Environments GB 17799.4 EMC general standard for emission in industrial environment GB 18306 China Earthquake Parameter Zoning Map GB/T 19418 Guidelines for the quality classification of arc welded joint defects of steel GB/T 20118 General technical requirements for steel wire ropes GB/T 22437.1-2018 Crane load and load combination design principles Part 1.General GB/T 26476 Terminology for mechanical parking equipment GB/T 27546-2011 Hoisting machinery pulley GB/T 33905.1 Smart Sensor Part 1.General GB/T 34123-2017 Technical Specification for Inverter Protection of Power System GB 50017 Steel Structure Design Standard GB 50057 Code for lightning protection design of buildings GB 50169 Code for construction and acceptance of grounding devices for electrical installations GB 50191 Code for seismic design of structures GB 50223 Classification Standard for Seismic Fortification of Building Engineering GB 50661-2011 Steel structure welding specification JB/T 6392 crane wheel JB/T 7017 Hydraulic buffer for crane JB/T 7511 Mechanical Coupling Selection Calculation JB/T 7512.1 arc tooth synchronous belt drive part 1.belt 5.2.4.3 Test load 5.2.4.3.1 General Before the parking equipment is put into use, static load test and dynamic load test should be carried out. The wind speed during the test should not be greater than 8.3m/s. 5.2.4.3.2 Static load test load During the test, the parking equipment is stationary, and the test is carried out according to two working conditions. Condition 1.Each parking space should load 1.1P smoothly and without impact. Condition 2.Load 1.25P smoothly and without impact at the most dangerous position of the lifting platform. Where P is defined as. For parking spaces, P is the gravity of the corresponding parking space suitable for the mass of the car; For the lifting platform, P is the gravity of the rated lifting load. 5.2.4.3.3 Dynamic load test load During the test, the parking equipment needs to complete various movements and combined movements, and the dynamic load test load should act on the most unfavorable position of the parking equipment. except Except that the order contract has higher requirements, the dynamic load test load is taken as 1.1P, and the definition of P is the same as 5.2.4.3.2.This lifting test load during verification The load and the lifting platform and car board that are raised and lowered at the same time shall be multiplied by the dynamic load factor ϕ6 of the dynamic load test load calculated by formula (10). ϕ6=0.5(1 ϕ2) (10) Where. ϕ 6-Lifting dynamic load factor of lifting test load; ϕ2-Lifting dynamic load factor. 5.2.4.3.4 Special test load 5.2.4.3.4.1 For parking equipment with special requirements, the test load can be higher than the above value, which shall be specified in the order contract or related It is specified in the product standard. 5.2.4.3.4.2 If the static load test and dynamic load test load are higher than the above-mentioned regulations, the parking equipment shall be checked and calculated according to the actual test load value. The carrying capacity of the equipment. 5.2.4.4 Load caused by unexpected shutdown The most unfavorable driving state at the moment of unexpected shutdown (i.e. the sudden braking force or acceleration force and the most unfavorable load group during unplanned shutdown) should be considered. Close), estimate the load caused by unexpected shutdown according to 5.2.2.2.1, the dynamic load factor ϕ5, see Table 9 for the value. 5.2.4.5 Load caused by failure of mechanism (or component) In various special situations, emergency braking can be used as an effective protective measure for parking equipment, so the load when the mechanism or component fails The load can be considered according to the load when the most unfavorable situation occurs and emergency braking is adopted. When two sets of (double) mechanisms are used for safety reasons, if any part of any mechanism fails, it should be considered that the mechanism has occurred Invalidate. For the above two cases, the load caused at this time should be estimated according to 5.2.2.2.1, and the impact generated during the force transmission process should be considered. effect. 5.2.4.6 Load caused by seismic excitation of foundation The load caused by the seismic excitation of the foundation refers to the vibration caused to the parking equipment due to the seismic wave forcing the parking equipment foundation to vibrate. Load. Only when the seismic fortification intensity is above 6 degrees, the load caused by the external excitation of this kind of foundation is considered. If the regulations or special technical specifications promulgated by the government have clear requirements for this, they should be based on corresponding regulations or special regulations. Consider this load. The user of parking equipment should make this request to the manufacturer, and provide the corresponding local seismic spectrum and other information for design use. 5.2.5 Other loads These loads are local loads, which only act on the local parts of the parking equipment structure and the components that directly support them. The magnitude of these loads is related to the purpose of the component and the location of the load. For example, the following loads should be considered in the walkway, platform, passage, etc.. ---At the place where items are stacked. 3000N; ---Only used as a walkway or channel. 1500N. 5.3 The basic design method, load situation and load combination of the metal structure design of parking equipment 5.3.1 Basic design method In the metal structure design of parking equipment, there are usually two methods. allowable stress design method and limit state design method. Allowable Please refer to Appendix F of GB/T 3811-2008 for application instructions of force design method and limit state design method. 5.3.2 Load situation When calculating parking equipment and its metal structure, three different basic load conditions should be considered. a) A---No wind working conditions; b) B---Windy working conditions; c) C---Working conditions under special load. In each load situation, there are several possible specific load combinations corresponding to the actual use situation that may occur. 5.3.3 Load combination 5.3.3.1 Load combination of parking equipment when there is no wind There are two types of load combinations for parking equipment when there is no wind. a) A1---Under normal working conditions, the equipment lifts the car without restraint, no wind load and other loads caused by climate influences, this It should only be combined with the driving acceleration force caused by other driving mechanisms (not including the lifting mechanism) under normal operation control; b) A2---Under normal working conditions, the parking equipment or handling trolley runs on the track or the ground, and there is no wind load in the working state and The load caused by other climate influences should be combined with the driving acceleration force of A1 at this time. 5.3.3.2 Load combination of parking equipment under wind working conditions There are three types of load combinations for parking equipment under windy working conditions. B1, B2, and B3. a) B1, B2---The load combination is the same as the combination of A1 and A2, but the wind load and other climatic influences in the working state should be considered Generated load; b) B3---Under normal working conditions, the parking equipment runs on the ground or on the track at a constant speed and deviates from the wind load and Loads caused by other climate influences (other mechanisms do not move). When the ramp load needs to be considered according to the usage of the parking equipment, the ramp load can be regarded as the accidental load on the parking equipment. It is considered in the load combination under working conditions or windy working conditions. 5.3.3.3 Load combination of parking equipment under special load There are six types of load combinations when parking equipment is subjected to special loads. a) C1---Under the maximum calculated wind pressure, the parking equipment has the wind load under the maximum calculated wind pressure and other weather influences. Load; b) C2---In the dynamic load test state of the parking equipment, the dynamic load test load is increased, and there is a wind load in the test state, which is combined with the load A1's driving acceleration force is combined; c) C3---The parking equipment has a rated lifting load, which is combined with the load generated by the buffer collision force; d) C4---The parking equipment has a rated lifting load, which is combined with the load caused by unexpected shutdown; e) C5---The parking equipment has a rated lifting load, which is combined with the load caused by the failure of the mechanism; f) C6---The parking equipment has a rated lifting load, which is combined with the load generated by the seismic excitation of the parking equipment foundation. 5.3.4 Load combination table and its application 5.3.4.1 Load combination table The calculated load and load combination table of the metal structure of parking equipment that is subjected to the above various loads is shown in Table 13. 5.3.4.2 Application of load combination table 5.3.4.2.1 Calculation of various loads The load of each item in Table 13 multiplied by the dynamic coefficient is calculated as follows. ---The load in the first row is the corresponding mass multiplied by the acceleration of gravity, then multiplied by the lifting impact coefficient ϕ1 or multiplied by 1; ---The load in the second row is the corresponding mass multiplied by the acceleration of gravity, and then multiplied by the lifting impact coefficient ϕ2; ---The load in the third row is the corresponding mass multiplied by the acceleration of gravity, and then multiplied by the operating shock coefficient ϕ4; ---The load in the fourth row is the corresponding mass multiplied by the driving acceleration, and then multiplied by the dynamic load factor ϕ5; ---The load in the 10th line is the corresponding mass multiplied by the collision stopping deceleration, and then multiplied by the buffer collision elasticity effect coefficient ϕ7 or press After the kinetic energy absorbed by the buffer is calculated to buffer the collision, it is then multiplied by the elastic effect coefficient ϕ7 of the buffer collision; ---The load in the 11th and 12th rows is the corresponding mass multiplied by the corresponding stop deceleration, and then multiplied by the dynamic load factor ϕ5. 5.3.4.2.2 Selection of load combination According to the actual conditions required by the designed parking equipment, select the corresponding load combination according to 5.3.3, and according to the content in Table 13, Carry out design calculations or carrying capacity check calculations under load combinations. 5.3.4.2.3 Application of load combination table when using allowable stress design method When the allowable stress design method is used, the allowable stress value is based on the specified strength R (steel yield point, elastic stability) of the material, part, component or connection The ultimate or fatigue strength calculation of each ultimate stress) divided by the corresponding safety factor n to determine. 5.3.4.2.4 Application of load combination table when using limit state design method When using the limit state design method, each calculated load should be multiplied by its respective load according to the requirements of each load condition before performing the combined calculation. Sub-item safety factor γpi. The ultimate design stress is calculated by the specified strength R (steel yield point, elastic stability limit or fatigue strength) of the material, part, member or link Each limit stress in) is divided by the resistance coefficient γm to determine, or other generalized limit values are used as the acceptable limit state control value (Such as the limit value of relative deflection, the limit value of structural vibration attenuation parameters, etc.). The optional sub-item safety factor γpi is listed in the third, fourth and fifth columns of Table 13. 5.3.4.2.5 Assessment of elastic displacement In some cases, too large elastic deformation and displacement will prevent the parking equipment from completing its work tasks, and will affect the parking equipment and its The stability of the structure, or may interfere with the normal function of the structure. At this time, the assessment of elastic displacement should be a component of the bearing capacity check calculation Part, and the calculated elastic displacement should be properly compared with the determined limit value. 5.3.4.2.6 About fatigue strength check calculation If it is necessary to check the fatigue strength, it should be carried out in accordance with the principle of 6.8.Generally, the fatigue strength check calculation should be based on A1, A2 (conventional load), etc. Dutch combination considerations. In some special appli......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 39980-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 39980-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 11 ~ 16 working days. 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