GB 28760-2012 English PDFUS$439.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 28760-2012: Tube bending machine -- Safety requirements Status: Valid
Basic dataStandard ID: GB 28760-2012 (GB28760-2012)Description (Translated English): Tube bending machine -- Safety requirements Sector / Industry: National Standard Classification of Chinese Standard: J62 Classification of International Standard: 25.120.10 Word Count Estimation: 19,193 Quoted Standard: GB 2893; GB 2894; GB/T 3766-2001; GB 4053.3; GB 4584; GB 5226.1-2008; GB/T 7932-2003; GB/T 8196; GB/T 15706.1-2007; GB/T 15706.2-2007; GB 16754-2008; GB/T 16855.1; GB/T 16856.1; GB 17120; GB/T 17454.1; GB 17888.1; GB 17888.2; GB 17888.3; GB 17888.4; GB/T Regulation (derived from): National Standards Bulletin No. 28 of 2012 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Chinese standard specifies the bending machine is designed and manufactured to comply with the safety requirements that should be and/or measures, verification, usage information, user responsibilities. This standard applies to the cold state bent wi GB 28760-2012: Tube bending machine -- Safety requirements---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.Tube bending machine.Safety requirements ICS 25.120.10 J62 National Standards of People's Republic of China Benders safety requirements Published 2012-11-05 2013-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China issued Table of ContentsPreface Ⅰ 1 Scope 1 2 Normative References 1 3 Terms, definitions and abbreviations 2 4 major hazards 4 5 safety requirements and protective measures 5 6 safety requirements and/or measures of verification 11 7 Using information 14 8 users responsibility 15ForewordThis standard Chapters 3 and 8 are recommended, the rest are mandatory. This standard was drafted in accordance with rules GB/T 1.1-2009 given. The standard proposed by China Machinery Industry Federation. This standard by the National Forging Machinery Standardization Technical Committee (SAC/TC220). This standard was drafted. Machinery Manufacturing Co. Jiangyin, Zhangjiagang and lift Machinery Manufacturing Co., Ltd., Kinmen and Matsu's Zhejiang Machinery Manufacturing Limited, Shougang long steel forging Machinery Manufacturing Co., Ltd. The main drafters. Qian Weiqing, Yuan Jianhong, Lin Weiming, Xing Weirong, Zhou Changhua, full Pan Shun, Wang Min, Li Ya in Di Qingyu. Benders safety requirements1 ScopeThis standard specifies the safety requirements for the design and manufacture of bending machines to be observed and/or measures, verification, usage information, user responsibility. This standard applies to wound bender bending in the cold state, including mechanical bending machine, hydraulic bending machine, CNC bending machine, a small radius bend Machines and loading and unloading auxiliary devices may be included; not dedicated bender, bending auxiliary equipment, such as sawing, tube end forming, detecting And mechanical means or by a dedicated bending machine of the production line.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only applies to the version dated paper Pieces. For undated references, the latest edition (including any amendments) applies to this document. GB 2893 Safety colors (ISO 3864-1) GB 2894 Guidelines for the use and safety signs GB/T 3766-2001 Hydraulic System General specification (ISO 4413.1998) GB 4053.3 fixed ladders and platforms Safety requirements - Part 3. industrial protective railings and steel platform GB 4584 presses technical conditions photoelectric protector GB 5226.1-2008 Electrical safety mechanical part of the machine electrical equipment 1. General requirements (IEC 60204-1.2005) GB/T 7932-2003 pneumatic systems General specification (ISO 4414.1998) GB/T 8196 mechanical safety of fixed and movable guards General requirements for design and manufacture (ISO 14120) Safety Basic Concepts GB/T 15706.1-2007 General Mechanical Design - Part 1. Basic terminology and methods (ISO 12100- 1.2003) GB/T 15706.2-2007 basic concepts of mechanical safety and General Design - Part 2. Technical Principles (ISO 12100- 2.2003) GB 16754-2008 Safety of machinery - Emergency stop design principles (ISO 13850.2006) GB/T 16855.1 mechanical safety control system safety components - Part 1. General principles for design (ISO 13849-1) GB/T 16856.1 mechanical safety risk assessment Part 1. Principles (ISO 14121-1) GB 17120 Forging Machinery Safety requirements GB/T 17454.1 mechanical safety sensitive protective devices - Part 1. Pressure-sensitive and pressure sensitive floor mats designed and tested on Then (ISO 13856-1) GB 17888.1 fixing Safety of machinery - Part 1. Choice of fixed installation between two levels (ISO 14122-1) GB 17888.2 Safety of machinery of fixed installations Part 2. Working platforms and gangways (ISO 14122-2) GB 17888.3 Safety of machinery of fixed installations Part 3. stairs, steps and fence (ISO 14122-3) GB 17888.4 Safety of machinery of fixed installations Part 4. Fixed ladders (ISO 14122-4) GB/T 18153 Safety of machinery may contact the surface temperature of hot surface temperature limit determined Ergonomics data (EN 563) Interlocking device design and selection principles GB/T 18831 Safety of machinery guard JB/T 3894.1 bender Terminology JB9971 bending machine, a three-roll bending machine noise limits 3 terms, definitions and abbreviations GB/T 15706.1, GB/T 15706.2, GB 17120 and JB/T 3894.1 Definition The following terms and definitions apply to the present file. 3.1 Bender tubebendingmachine Bending machine with mechanical or hydraulic pipes. 3.2 Bending mold bendingdies A pipe forming bending tools. 3.2.1. Bending mold body benddie Bending die for bending a tube shaped body (die wheel). 3.2.2. Clamping block clampdie Parts for gripping the pipe, which clamping force is sufficient to counteract the frictional force generated when the reverse resilient tube and the tube is bent pipe bend Curved shape. 3.2.3 Guides pressuredie For pressing the tube parts, which can reduce the bending deformation of the tube cross-section and from the guide, which is sufficient to counteract the pressure force of the return pipe Stretch. 3.2.4 Roller roler Support and guide wheels. 3.2.5 A mandrel (core head) mandrelunit (mandrelhead) Elbow bend extends into the tube at a time from the tangent point of the tube to prevent distortion of parts. 3.3 Clamping mechanism clampdieunit Tube clamping means. 3.4 Boom bendarm Elbow clamp block mounting means molded magnet synchronous rotating parts. 3.5 Boom safety barrier bendarmsafetyplate When installed in the front portion of the pivot arm (front safety shield) or back (after a safety shield), for a person or other object enters region can swing the boom Stopping the bending motion of the shutter. 3.6 Material holding means supportunit Tube support member (feed) of. 3.7 Car clamping head carriageclaw Fed to the pipe clamp parts and components. 3.8 Block hit the block For adjusting the moving position of the stopper part. 3.9 Footswitch pedalswitch Foot operated electrical switch. 3.10 Limit switch (limit switch) limitswitch (travelswitch) The switching operation from a predetermined position or the arrival of the moving part of a bending machine. 3.11 Single acting (adjustment) mode jogmode A movement of a machine tool operator should be forced to operate in a first mode of operation and does not cause other sports. 3.12 Automatic cycle mode automode After the operator first starts operation, moving machine can no longer be manually set in accordance with a continuous process to complete action. 3.13 Stepping way stepmode Automatic cycle is distinguished, in this mode, the operator performs a start operation of the same, the machine movements can be set in accordance with the program Action once. 3.14 Master cylinder maincylinder Cylinder for hydraulic pipe bend primary motion with other bodies supporting the use of the linear motion into rotary motion (bending). 3.15 Sent the car feedingcarriage Means for gripping the tubular member bender and moved along the length of the tube (feeding, Y-axis), which is a front portion with a gripping clamp tube Head, and it can swing around the central tube (angle, B axis). 3.16 Loading and unloading mechanism loader Sent for the tube bending apparatus and a bending machine for bending pipe removed well. 3.17 Surveillance monitoring When a security feature, component or element when the ability to perform its function disappears, or changes in processing conditions hazardous, this function can be determined Ensure safety monitoring. 3.18 Suppression restrain Temporary safety function Safety-related parts of a control system automatically suspended. 3.19 Redundancy redundancy Application of part or portion of a plurality of system devices or systems or devices, ensure that when one of the function fails, the other to complete its function.4 major hazards4.1 important risk risk assessment according to GB/T 16856.1 results are shown in Table 1. Chapter 5 and safety requirements contained in Chapter 7 and / Or the use of protective measures and information are based on risk assessment, which aims to eliminate the risk or reduce risk. 4.2 Evaluation of risk assessment predictable from various aspects, such as an operator or other personnel to enter the hazardous area from the bending machine in all directions, Unexpected or stroke or the like off a workpiece factors, consider the potential hazard in the bending machine life, evaluation and analysis of the control system further comprising The risk of malfunction or failure caused. 4.3 standard users, such as designers, manufacturers or equipment suppliers, should check whether the important risk listed in Table 1 are taken into account. If it is found there are other danger should GB/T 16856.1 risk analysis and evaluation, with particular attention to the use of a predetermined machine (e.g. Commissioning, adjustment, maintenance, repair) and foreseeable misuse. Table 1 major risk, danger zone and protective measures No. dangerous hazardous areas GB/T 15706.1-2007 Corresponding clauses Protective measures This standard corresponding reg Mechanical hazards Machine parts and components in the machine or workpiece The portion packing of energy. elastic member (Spring), the liquid and gas pressure 1.1 Risk of crushing 1.2 Cut dangerous 1.3 cut danger 1.4 winding danger 1.5 inhaled involved in dangerous 1.6 Shock hazard Projection hazard 1.9 high pressure fluid jet (ejection risk) Boom, and the corresponding region of the mold. --- between the mold; --- between the mold and the workpiece; --- between the workpiece and the member; --- between the moving member and the fixed member; --- moving member between the moving member; --- the workpiece and the auxiliary means, such as child care material, Gauge, loading and unloading mechanism and the like; --- falling of the workpiece or movement of workers Caused by dangerous pieces Electrical, hydraulic, pneumatic device motion member, and The motor and drive mechanism, a mechanical actuating apparatus Hydraulic system 4.2.1. 5.2 to 5.5 5.2.1.1,5.2.1.2 5.3.2 ~ 5.3.7 5.2 to 5.5 5.2.7.5,5.2.7.72 electrical hazards2.1 Human body part in contact with live (direct contact) 2.2 Man and insulation failure is charged with A contact electrode (indirect contact) Electrical Equipment 4.3 5.8.13 thermal hazards3.1 By a possible contact due to burns and scald The hydraulic system components Elbow lead From a workpiece or component 4.4 5.8.24 noise hazard4.1 cause hearing impairment (deafness) Bender existence of any hearing damage Area 4.5 5.8.5 TABLE 1 (cont.) No. dangerous hazardous areas GB/T 15706.1-2007 Corresponding clauses Protective measures This standard corresponding reg Ignore ergonomics in Mechanical Design The risk arising from the principle of learning 5.1 Unhealthy postures or excessive effort 5.2 Unreasonable considering the hand - arm, leg - the leg action 5.3 human error, human habits 5.4 Since the manually operable means unreasonable Design, installation and uncoordinated 5.5 Unreasonable design or installation display Equipment Operating position, control, operation, adjustment, Maintenance and any other area 4.9 5.8.8 6 Unexpected start, unexpected overrun, speeding 6.1 Control system fault/error command Energy recovery break after 6.2 Electrical equipment external interference 6.3 6.5 software error 6.6 operator error generated Power supply failure 78 control circuit fault9 indicates an errorMolds and respective areas. --- between the workpiece and the die and components; --- stationary member and moving member between; --- between the moving member 4.9 5.2.1,5.4.4 5.4 5.4.1 5.4.1 5.2.9 5.3 5.4.1.2 5.2 to 5.4 5.3.9 10 during operation of the brake a mechanical, electrical, hydraulic, pneumatic equipment 11 drops, flying objects or liquid discharge machine parts, molds, workpiece 12 buckling/bending machine excessively inclined Zhou Bian region 4.2.2 5.2.8.2,5.4.4.1 5.2.7.5,5.2.7.7 5.8.4 13 slip, fall or drop The operator height operation, maintenance, adjustment Benders and other Zhou Bian areas 4.10 5.75 safety requirements and protective measures5.1 General This standard relates to a bending machine comprising a small normal large mechanical bending machine, hydraulic bending machine, CNC bending machine, a small radius bending machine Wait. Bending machine design, manufacture should meet the requirements of GB 17120. Methods to eliminate or reduce the risk of serious risks with appropriate measures in Table 1. 5.2 Basic design principles 5.2.1 boom, cars and other moving parts feed 5.2.1.1 bender boom, feed overtravel car out of control or are moving at high speed and endanger the mechanical impact caused by the operator Personal safety, electrical control system, hydraulic system failure will result in failure described above; out of control when the rotary arm returns the operating person being adjusted or Members may be dangerous, so, we shall have the following precautions. a) a reliable boom (return to the initial position) to prevent extrusion of personnel security measures; b) providing a holding means (for car chucks); c) providing a mechanical limiting means (to feed the car). 5.2.1.2 boom (return) security must be at least one of the following. a) mechanical, electrical safety barrier. telecommunication means by a mechanical shutter trigger command to stop the boom, is mounted on both sides of the boom or the boom return Inner surface, so that the shutter is triggered during operation of the person in the danger zone to stop the boom; b) a pressure-sensitive pad boom entering the danger zone, to prevent entry into the danger zone (see claim in GB/T 15706.2-2007 of 5.2.5.2); c) photoelectric protection device. During the staff shall enter the danger zone and shall comply with the provisions of GB 4584. 5.2.1.3 main cylinder control circuit using reliable measures to prevent accidental overtravel boom, in conjunction with the unloading pump boom reliably stopped. 5.2.1.4 feed trolley in longitudinal limit stop position is set dead iron (with buffer means), when the feed car accident overtravel limit position Forced stop, in the extreme position limit switch may also be fed together form a reliable stop the car. 5.2.2 gripping the tubular member Bending machine with a feed carriage during operation should ensure that the collet clamp tube trolley reliable and effective. The maximum clamping force should satisfy tube Will not fall when the tube is in the maximum load torque; or a control signal when the power interruption, the jaw locking means of hydraulic pressure or mechanical self-locking security continue Tube clamping valid. 5.2.3 loading or unloading mechanism When the bending machine with feeding or discharging mechanism shall comply with design GB 4053.3 and GB/T 8196 the fence, comprising. a) a fixed fence; b) activities interlocking fence. 5.2.4 important force bodies and parts, bolts Bending machine clamping, pressing, bending force mechanism and other important parts, such as a bolt, should have sufficient strength and rigidity in the work can be By locking. Adjustment operation projecting outer part no sharp edges, corners or mutated, a proximity switch and the like baffle plate part deburring, chamfering, in order to avoid Scratch personnel. 5.2.5 Packaging Application of bolt bending machine reliably stably fixed on the package base board on both sides of the box should be brushed with a lifting position and the centroid flag. 5.2.6 rigidity and strength Bender should be considered in the design full load, overload necessary and sufficient rigidity and strength to the test machine, cause the machine structure is not broken Bad, endangering personal safety. 5.2.7 hydraulic system and pneumatic system 5.2.7.1 The hydraulic system should be equipped with safety valves. Prevent accidental pressure requirements see 4.3.3 GB/T 3766-2001 in. 5.2.7.2 hydraulic systems need to be adjusted for each circuit to set the pressure to facilitate the observation of the pressure gauge. 5.2.7.3 workpiece clamping mechanism shall hydraulic locking valve to prevent the system pressure loss caused by the work of the work for detachment or loosening. 5.2.7.4 should be in line with a pneumatic type accumulator GB/T 3766-2001 6.3 requirements. 5.2.7.5 hydraulic valves, block valves, fittings fixed reliable, easy to adjust the maintenance, the line should take precautions to prevent the thermal expansion caused by Damaged pipe leakage. Rigid conduit should be firmly supported, moving the hose mounting member shall meet the requirements of GB/T 3766-2001 in 9.5, And to ensure a minimum radius of any working position, to prevent the hose twisted or broken. May be in contact with the ground, sliding hose (e.g., the boom) to be employed Hoses or braided wire sheath spring. 5.2.7.6 the hydraulic pump starts, if the work to ensure that the button member will not move (to be provided unloading means of the hydraulic pump). 5.2.7.7 hydraulic system a hydraulic cylinder, pipe (wand and hose) wall thickness, the joint should not cause satisfy at maximum pressure (shock) rupture. 5.2.7.8 portion of the pneumatic system mounted muffler device should meet the requirements of GB/T 7932-2003 4.3.5 in which install and Shall be in accordance with the manufacturer's valve to its use in a security system, and does not affect the safety function. 5.2.7.9 pneumatic system pressure is required to prevent accidents should meet the requirements GB/T 7932-2003 in the 4.3.3,8.2. 5.2.8 Electrical System 5.2.8.1 Electrical system design should meet the requirements of GB 5226.1. 5.2.8.2 Emergency Stop function should belong to the Safe Stop Category 0 (see 9.2.5.4 GB 5226.1-2008 in). After the emergency stop should stop package Elbow including, feed, clamping, and the like all having a core into the dangerous operation. 5.2.8.3 electrical cabinet door interlocks should door off. Load detecting means for each phase conductor 5.2.8.4 three-phase AC induction motor should be connected through the overload protection, the device sent messages when overload operation Alarm signal. 5.2.8.5 car should be equipped with electrical feed axis over-travel protection measures and ensure overstroke occurs, the operator and not bending machine-made To hurt, electrical over-travel protection is not a substitute mechanical over-travel protection. 5.2.8.6 movement controller should have the function of stopping. 5.2.8.7 plurality of different operating voltages when the conductor traces on the same channel (e.g., conduit, pipe or cable down trough means), both wires Insulation should meet the highest voltage requirements. 5.2.8.8 protection level operator interface and control apparatus is suspended on a bending machine is at least IP54. 5.2.8.9 control means protection of the enclosure is at least IP54. 5.2.8.10 identify and determine the protective conductor should be GB 5226.1-2008 selection of 13.2.2. Other conductors should identify GB 5226.1-2008 selected as specified in 13.2.3 and 13.2.4 of. 5.2.9 software functional requirements It will not cause damage to the machine whe......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 28760-2012_English be delivered?Answer: Upon your order, we will start to translate GB 28760-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 28760-2012_English with my colleagues?Answer: Yes. The purchased PDF of GB 28760-2012_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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