1、BRITISH STANDARD BS6753:1986 Specification for Shotbolts (solenoid operated) for guarding machinery UDC 621.882.6:621.318.371BS6753:1986 This BritishStandard, having been prepared under the directionof the Machinery andComponents Standards Committee, was published underthe authority of the BoardofBS
2、I and comesintoeffecton 28November1986 BSI12-1999 The following BSI references relate to the work on this standard: Committee reference MCE/3 Draft for comment85/70203 DC ISBN 0 580 15460 2 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the M
3、achinery and Components Standards Committee (MCE/-) to Technical Committee MCE/3, upon which the following bodies were represented: Association of British Insurers British Aggregate Construction Materials Industries British Coal British Federation of Printing Machinery and Supplies Ltd. British Plas
4、tics Federation British Rubber Manufacturers Association British Textile Employers Association British Textile Machinery Association Chemical Industries Association Electric Cable Makers Confederation Engineering Employers Federation Engineering Equipment and Materials Users Association Federation o
5、f Bakers Health and Safety Executive Industrial Safety (Protective Equipment) Manufacturers Association Institution of Mechanical Engineers Institution of Occupational Safety and Health Institution of Production Engineers Machine Tool Industry Research Association Mechanical Handling Engineers Assoc
6、iation Metalforming Machinery Makers Association Limited National Federation of Clay Industries Ltd. Process Plant Association Rotating Electrical Machines Association (BEAMA Ltd.) Society of Laundry Engineers and Allied Trades Limited Trades Union Congress Amendments issued since publication Amd. N
7、o. Date of issue CommentsBS6753:1986 BSI 12-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Dimensions 1 3 Performance 1 4 Electrical requirements 1 5 Corrosion protection 1 6 Shape of bolt nose 1 7 Spring force 1 Figure 1 Shotbolt 2 Table 1 Dimensions of shotb
8、olts 2 Publications referred to Inside back coverBS6753:1986 ii BSI 12-1999 Foreword This BritishStandard has been prepared under the direction of the Machinery and Components Standards Committee following a proposal from the Machine Tool Industry Research Association. The standard deals with shotbo
9、lts which are primarily used for locking opening guards in the closed position by means of spring force, the bolt being retracted electromagnetically by the operation of a solenoid. The aim of the standard is to reduce variety in shotbolts and thereby facilitate their interchangeability and replacem
10、ent. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document compr
11、ises a front cover, an inside front cover, pagesi andii, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS6753:1986 BSI 12-1999
12、1 1 Scope This BritishStandard specifies fixing dimensions, envelope dimensions, electrical requirements and performance requirements for three sizes of shotbolts for use on guards for safeguarding machinery. This standard is not intended to apply to the safeguarding of machinery used in domestic ap
13、pliances. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Dimensions Dimensions of shotbolts shall be as given in Table 1. 3 Performance The shotbolt action shall be designed and installed in such a way that the unpowered state is the guard-lock
14、ed state, i.e.power retract, spring extend. NOTEThe action should be so designed as to minimize the possibility of failure in the unlocked retracted state. 4 Electrical requirements 4.1 Supply voltage Shotbolts shall be designed to operate from the following supplies: a) a.c.:48V,110V or240V,50Hz b)
15、 d.c.:24V,48V,110V or240V. 4.2 Rating Shotbolts shall be continuously rated within an ambient temperature range of+5 C and40 C. 4.3 Wiring connections 4.3.1 The wiring shall either: a) pass through a conduit entry to terminals within the shotbolt; NOTE 1This is the preferred method. NOTE 2For machin
16、e tool applications, a terminal box entry of M20 1.5 (seeBS4568) is generally suitable. or, b) where monitoring is not required, terminate in a three-pin plug, complying with BS6361, within or integral with the bolt. 4.3.2 Terminations shall comply with BS2771-1 1) . 4.4 Switches Where electromechan
17、ical switches are used to monitor that the bolt is shot, position switches having positive opening operation complying with BS4794-2.20 shall be fitted. NOTE 1These switches may be either of the direct operating type or of a type which combines snap action with positive opening operation. Such switc
18、hes can have changeover contacts. NOTE 2The primary aim of monitoring is to ensure that the bolt is shot. Monitoring of bolt retraction is secondary and, although not always required, is recommended. NOTE 3The action of bolt withdrawal should positively operate one switch. 4.5 Solenoids 4.5.1 The so
19、lenoid shall be capable of operating at 10%of its rated voltage. If transient voltage protection to protect the device switching the solenoid from damage is not fitted, this shall be stated by the manufacturer. 4.5.2 Solenoids shall be d.c. operated. If the supply is a.c. a rectifier shall be incorp
20、orated. The electrical power required to operate the solenoid shall be stated by the manufacturer. 4.5.3 The degree of protection against the ingress of moisture, dust, etc., shall be stated by the manufacturer. NOTEFor applications where the solenoid is intended to be installed without further prot
21、ection, e.g.from a machine casing, the degree of protection should normally be to a minimum of IP54 (seeBS5420). 4.5.4 The solenoid and spring shall be capable of operating the shotbolt in any attitude of inclination of the bolt axis. 5 Corrosion protection The bolt and the component parts which act
22、uate the bolt shall be protected against corrosion. NOTEAttention is drawn to BS3382 and, for temporary protection, to BS1133-6. 6 Shape of bolt nose The shape of the bolt nose shall be as shown in Figure 1, except for slam latch applications where the profile may be modified to achieve the intended
23、 action. 7 Spring force With the bolt shot, the spring force shall exceed the weight of the bolt assembly by not less than3N (. 0.3kgf). 1) Harmonized with IEC Publication204-1.BS6753:1986 2 BSI 12-1999 Table 1 Dimensions of shotbolts Shotbolt size Fixing holes Shotbolt Envelope A a B a Diameter a B
24、olt diameter, C Stroke, D Projection of bolt, J b Flange Length, G max. Max. Min. E F 0 1 2 mm 25 32 45 mm 50 64 90 mm 7 7 9 mm 8 12 16 mm 15 15 25 mm 10 10 15 mm 0,12.5,25 0,12.5,25 0,12.5,25 mm 45 50 65 mm 70 80 110 mm 200 260 300 a Dimensions correspond to flange mounted cylinders(32mm and50mm bo
25、re) as specified in BS4862-2. b The projection of the bolt in the retracted position, J, should be chosen from one of the three dimensions listed. Figure 1 ShotboltBS6753:1986 BSI 12-1999 Publications referred to BS1133, Packaging code. BS1133-6, Temporary protection of metal surfaces against corros
26、ion (during transport and storage). BS2771, Electrical equipment of industrial machines. BS2771-1, Specification for general requirements. BS3382, Electroplated coatings on threaded components. BS4568, Steel conduit and fittings with metric threads of ISO form for electrical installations. BS4568-2,
27、 Fittings components. BS4794, Specification for control switches (switching devices, including contactor relays, for control and auxiliary circuits, for voltages up to and including1000a.c. and1200V d.c.). BS4794-2, Special requirements for specific types of control switches. BS4794-2.20, Position s
28、witches with positive opening operation. BS4862, Mounting dimensions of single rod double acting10bar pneumatic cylinders. BS4862-1, Specification for cylinders up to25mm bore. BS5420, Specification for degrees of protection of enclosures of switchgear and controlgear for voltages up to and includin
29、g1000V a.c. and1200V d.c. BS6361, Specification for three-pin plug connectors for electrically controlled fluid power equipment. IEC Publication204-1, Electrical equipment of industrial machines Part1 General requirements.BS6753:1986 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstit
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