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1、BRITISH STANDARD BS ISO 20957-2:2005 Stationary training equipment Part 2: Strength training equipment, additional specific safety requirements and test methods ICS 97.220.30 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 20957-2:2
2、005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 January 2006 BSI 30 January 2006 ISBN 0 580 47079 2 National foreword This British Standard reproduces verbatim ISO 20957-2:2005 and implements it as the UK national standard. The UK part
3、icipation in its preparation was entrusted by Technical Committee SW/136, Sports, playground and other recreational equipment, to Subcommittee SW/136/4, Stationary training equipment, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request
4、 to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catal
5、ogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand t
6、he text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front c
7、over, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun
8、 sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 20957-2:2005(E) INTERNATIONAL STANDARD ISO 20957-2 First edition 2005-12-15 Stationary training equipment Part 2: Strength training equipment, additional specific safety requirements and test method
9、s quipement dentranement fixe Partie 2: quipement dentranement de force, exigences spcifiques de scurit et mthodes dessai supplmentaires BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffi
10、eldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Classification. 1 5 Safety requirements . 1 5.1 General. 1 5.2 Loading 2 5.3 Endurance load. 3 5.4 Stacked weights 3 5.5 Weight d
11、iscs 6 5.6 Minimum achievable training loads 6 6 Test methods. 8 6.1 General. 8 6.2 Testing of intrinsic loading 8 6.3 Testing of extrinsic loading. 8 6.4 Testing of the weight discs support. 8 6.5 Testing of endurance load. 9 6.6 Test report . 9 7 Additional instructions for use 9 8 Additional exer
12、cise instructions. 10 BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wo
13、rk of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governm
14、ental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The
15、main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
16、Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 20957-2 was prepared by Technical Committee ISO/TC 83, Sports and recreational equipment. ISO 209
17、57 consists of the following parts, under the general title Stationary training equipment: Part 1: General safety requirements and test methods Part 2: Strength training equipment, additional specific safety requirements and test methods Part 4: Strength training benches, additional specific safety
18、requirements and test methods Part 5: Pedal crank training equipment, additional specific safety requirements and test methods Part 6: Treadmills, additional specific safety requirements and test methods Part 7: Rowing machines, additional specific safety requirements and test methods Part 8: Steppe
19、rs, stairclimbers and climbers Additional specific safety requirements and test methods Part 9: Elliptical trainers, additional specific safety requirements and test methods BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
20、 1 Stationary training equipment Part 2: Strength training equipment, additional specific safety requirements and test methods 1 Scope This part of ISO 20957 specifies additional safety requirements for strength training equipment in addition to the general safety requirements of ISO 20957-1. This p
21、art of ISO 20957 is applicable to stationary training equipment type strength training equipment with stack weight resistance or other means of resistance like weight discs, elastic cords, hydraulic, pneumatic and magnetic systems and springs (type 2) (hereinafter referred to as training equipment)
22、with the classes S and H. Any attachments provided with the training equipment for the performance of additional exercises are subject to the requirements of ISO 20957-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer
23、ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 20957-1:2005, Stationary training equipment Part 1: General safety requirements and test methods EN 294, Safety of machinery Safety distance to prevent
24、 danger zones being reached by the upper limbs 3 Terms and definitions For the purposes of this document the terms and definitions given in ISO 20957-1 apply. 4 Classification Clause 4 of ISO 20957-1:2005 applies. 5 Safety requirements 5.1 General Depending on the design of the piece of training equ
25、ipment the following requirements shall apply as appropriate. BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 5.2 Loading 5.2.1 Intrinsic loading Each piece of equipment loaded with the users body mass shall withstand a
26、 force F: for class H 2,5 the body mass (100 kg) without breakage; for class S 2 the body mass (100 kg) without permanent deformation. When tested according to 6.2, supports (e.g. load-bearing surfaces) shall not be deformed by more than f = 1/100, cantilever supports (cantilever surfaces) by more t
27、han f = 1/150 and other dimensions by more than 1 %. The training equipment shall not break when a static load of 4 the body mass is applied. 5.2.2 Extrinsic loading 5.2.2.1 Class H When tested according to 6.3 and loaded with the users body mass and/or reaction forces or moments of the user, each p
28、iece of equipment shall withstand, without breakage, a load, F in newtons according to Equation (1): F = Gk + 1,5 G 2,5 9,81 (1) where: G is the maximum load in kilograms indicated by the manufacturer (see 6.8 of ISO 20957-1:2005); Gk is the force in kilograms determined by the proportional body mas
29、s (100 kg); 1,5 is the dynamic coefficient; 2,5 is the safety coefficient. 5.2.2.2 Class S When tested according to 6.3 and loaded with the users body mass and/or reaction forces or moments of the user, each piece of equipment shall withstand a load F according to Equation (2): F = Gk + 1,5 G 2 9,81
30、 (2) where: G is the maximum load in kilograms indicated by the manufacturer (see 6.8 of ISO 20957-1:2005). The torques as specified in Table 1 are to be taken as basis for the calculation of G, if greater than the manufacturers stated maximum load; Gk is the force in kilograms determined by the pro
31、portional body mass (100 kg); 1,5 is the dynamic coefficient; 2 is the safety coefficient. BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 After the test, supports (load bearing surfaces) shall not be deformed by more t
32、han f = 1/100, cantilever supports (cantilever surfaces) by not more than f = 1/150 and other dimensions by not more than 1 %. If greater than manufacturers maximum stated load, the equipment shall be capable of accepting a minimal torque load as specified in Table 1, throughout the range of movemen
33、t of each exercise for which the equipment is designed. The training equipment shall not break when a static load according to Equation (2) with a safety coefficient of 4 is applied. 5.3 Endurance load When tested according to 6.4, the training equipment shall be capable of normal functioning. When
34、the training equipment consists of two or more separate functional units, each shall withstand the endurance load test. When more than one function is tested, which involve use of common components e.g.: ropes, pulleys and bearings, these can be replaced before each separate test. 5.4 Stacked weight
35、s 5.4.1 Access to squeeze and/or shear points 5.4.1.1 General The uncontrolled access by third parties to squeeze and/or shear points of stacked weights shall be prevented. Weights that can only be lifted as a whole block shall not come closer than 60 mm during movement to any part of the equipment
36、or the ground. 5.4.1.2 Class H This can be achieved by either: a) surrounding by a casing in conformance with EN 294 with the exception of a maximum 75 mm wide gap for setting of the weights; or b) by locking the machine to prevent moving of the stacked weights when the equipment is not in use and b
37、y utilizing the training area to deny access to third parties see 3.2 and 9 c) of ISO 20957-1:2005. 5.4.1.3 Class S 5.4.1.3.1 Encasing Where stacked weights are behind the user in the normal exercise position as described in the users manual (see Figure 1, vertical plane AB) they shall be encased on
38、 all sides except one side where a gap of 75 mm maximum is allowed for selection of the weights. Stacked weights that are encased shall fulfill the following requirement: up to 1 800 mm the encasing shall be at least 60 mm higher than the upper edge of the block of weights in its highest position. B
39、S ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 Dimensions in millimeters Key 1 head, chest or back support Figure 1 Weight stack behind the user Where the whole of the stacked weights are at the side of the user and in
40、front of AB (see Figure 2) they shall be encased on the 3 sides furthest from the user. Test in accordance with 6.1.1. Selection of the weights shall be from the open side. If any part of the weight stack projects behind AB (see Figure 3) it shall be encased on all sides. AB is the line drawn latera
41、lly from the head, chest or back support in its most onerous position. If there is no support the line is drawn laterally from the most onerous user position. Dimensions in millimeters Key 1 head, chest or back support Figure 2 Weight stack in front of AB BS ISO 20957-2:2005 Licensed Copy: sheffield
42、un sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 Dimensions in millimeters Key 1 head, chest or back support Figure 3 Weight stack behind AB Multiweight stack machines do not require guarding on the 3 sides furthest from the user provided there is a framework on t
43、hese sides which prevents uncontrolled access by third parties. On the side adjacent to the user the requirements apply as in 5.4.1.2. 5.4.1.3.2 No encasing Where the stacked weights are always in front of the user and visible throughout the exercise without any important obstruction (see Figure 4),
44、 weights need not be encased. NOTE Encasing is not necessary because the negative forces exceed the positive forces and thus the user can always interrupt the movement of the stacked weights if a third party unintentionally enters the area of the stacked weights. Key 1 head, chest or back support a
45、Field of vision. Figure 4 Weight stack in front of the user BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 5.5 Weight discs The maximum load ability of each weight support shall be indicated on the machine. Locking mec
46、hanisms shall be provided according to 5.4 of ISO 20957-1:2005 which prevent weight discs from falling off. Methods of attachment or loading of other forms of resistance (e. g. elastic cords, springs) shall comply with 5.4 of ISO 20957-1:2005. Test in accordance with 6.1.2 and 6.1.4. 5.6 Minimum ach
47、ievable training loads Machines which perform following biomechanical functions should meet the minimum torque values shown in Table 1. Test in accordance with 6.1.4. BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 Tabl
48、e 1 Mean torque values for single-joint movement Elbow flexion 170 Nm (B) Elbow extension 170 Nm (B) Pull over 260 Nm (B) Arm lifting 130 Nm (B) Arms forwards 110 Nm each Arms backwards 110 Nm each Shoulder adduction 110 Nm each Shoulder abduction 50 Nm each Trunk flexion 280 Nm Trunk extension 450
49、Nm Hip extension 450 Nm each Hip flexion 190 Nm each Hip abduction 140 Nm each Hip adduction 200 Nm each Knee extension 600 Nm (B) Knee flexion 300 Nm (B) (B) Both sides and both legs respectively. ? Joint in motion. Joint without motion. BS ISO 20957-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:41:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8 6 Test methods 6.1 General 6.1.1 Dimensional