Some standard content:
Classification number, A53
Preparation number: 1318-2004
Light Industry Standard of the People's Republic of China
0B/T1076-200
Replacement of QB/T1076-1991, QB/11077-1991 Non-self-indicating railroad track scale (QfMR76-1:1992, Nonautomatic weighing instruments metroiogicalard technical requirements-Tests, MQD)2003-12-11 Issued
National Development and Reform Commission of the People's Republic of China2004-05-01 Implementation
Q/T 1076—2003
This standard is a revision of QB/T1076--1991QGT type light dynamic diameter: 3 and QR/T10771991 "Present state machine domain soft track balance". This standard adopts OIMLR76-1:190 non-dynamic ink (English version). The main differences between this standard and OIMI.R761:1992 are as follows: According to the requirements of GBT1.1-2000 "Guidelines for Standardization 1.1: Structure and compilation of standards", some layout formats have been partially adjusted to suit the national conditions, such as the requirements for family planning of 101 transfer scales. The regulations are as follows: This standard is different from QB/T1076-1991 QG1 type light rail new non-dynamic airborne scale [QB/T1077-1991 dynamic airborne scale. The standard name should be changed to non-automatic scale to meet the needs of joining WO, and be consistent with the national light and GB 1425C instrument technology; the content is a pair of requirements, and the requirements are in accordance with the provisions of OLVR76-1 micro-automatic scale 3. The detailed description is carried out according to the requirements of the design and safety technology. The standard is in accordance with the actual situation of R76-1 non-automatic scale. In the content of marking, packaging, confirmation, and competition, the standard is adopted. The standard is proposed by the China Light Industry Association: This standard is issued by the National Weighing Products Standardization Technical Committee: Chang Street Instrument Manufacturing Co., Ltd. This standard is a single person: this standard is a single person: this standard is a single person: this standard is a single person: this standard is a single person: this standard is a single person: it replaces the original light industry standard Q/1076-19914QT type economic standard QB/1:1077-1991 (static machine standard OIML Foreword
QB/T1076-2003
OIML is an international independent measurement organization. Its main task is to coordinate the various procedures and management related to the measurement institutions of member countries. The main versions of OIML are:
1) and International Recommendations (OIMLR), which stipulate the common specifications for the measurement characteristics requirements and inspection methods of measuring instruments. All OIML member countries should implement these international recommendations as much as possible. 2) International Documents (OMD), these international documents provide information and materials to promote the development of the OIM: 1. The recommendations and documents of the OIM are jointly formulated by the member states and the relevant international and regional Red Cross and Red Crescent Conferences and their branches. OM and some organizations cooperate in material, for example [S and FC: the actual cooperation between the two organizations, in order to avoid some technical differences between the two departments, so that the production of the mother film can be increased by the OML and other organizations in the same year. International recommendations and international documents are published in the format (P) and the format (E). The OM version can be obtained from the headquarters of the organization: International Legal Metrology and
,ruu1uegot—750mg France has filed a case
Tel: 33(0;148781282 and 42852711 Fax: 33(0)】4282[737
This edition - OMR71, 1993 (E) This edition OIMLR76-2, 1992E) Edition, S7Sr4\non-automatic visual device", SP? "Quality early test product" 1. The "Nordic Working Group" of the production of the product has determined that it is supplemented with SP7, recording A and variant identification report (R76 2), after the text was approved by the International Legal Affairs Commission in 1991, it was submitted to the International Decision-making Conference for formal approval in 1992 and replaced by the 198 version: 1 Scope
Non-self-indicating track scales
QR/T1076—2003
This standard specifies the definition, measurement requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of non-self-indicating track scales.
2 Normative references
The following clauses become the versions of this standard through reference in this standard: The referenced documents of the current period and all their subsequent revisions are not applicable to this standard; however, the parties agreed upon in accordance with this standard shall investigate whether the latest versions of these documents can be used: For all referenced documents of different periods, the latest version shall be used. GB191 Packaging details and transport illustrations
GB 63S8 Transportation packaging and labeling station
GB/T33B4 Machine product packaging tracking technical conditions use equipment department
CA/T14250
Applicator product number compilation method
QB/T1563
3 Definitions
3.1 Terms
The main language of this standard adopts the full meaning of Sichuan 0B/4250: 3.2 Product model
The core product model and format adopt (B563 is: round
4 Measurement requirements
4.1 Accuracy level Model number Serial number Maximum value or temperature Indication form: Snake Format: Lever Category: Track scale See Table 1 for the accuracy level of track scale readings. QB/T1076—2003 Accuracy level of China Railway Scale 4.2 Graduation value The scale is expressed in one of the numbers of the mass digit, 110, 2×1, ×10 The relationship between the calibration division value e [positive rate, negative number or etc.] and the actual division value 4 is shown in Table 2. Table 2
Mar100t
10, the calibration division position is the requirement of the phonetic table, daily travel 4.3 The accuracy grade of the track scale
and the accuracy grade of the track scale are X single large evaluation x, teaching small evaluation 4, calibration price piece, calibration division value Table 3 and Table 4.
Max-.100t
Accurate end safety grade
According to the fixed division
Use one product for settlement If the minimum number of divisions is not appropriate Ma2100t, the correct number of divisions e is used. The track quotient of the Miang special medicine is used, and its small division is effective for (4.4 Maximum allowable error 4.4.1 The maximum allowable error of the first calibration is the appropriate division group awe r=inn. For (m number of calibration sub-items)-1, the maximum human entertainment benefits of the soft track micro-carrying or teaching are shown in Table 5. 2 10 000 n40U.
Min
Maximum allowable error
4.4.2 Inspection during use
0%msno
SUU- m: 2 (AX)
2000 to 10000
The maximum allowable error of the inspection during use is twice the maximum allowable error of the initial verification. 4.4.3 When the weighing rod is tested separately, its maximum error is 0.5 times the maximum allowable error of the whole test. 4.5 Allowable integral value between weighing results
QB/T 1076—2003
OMmw: SU
200<. m) 1 (X)
The maximum allowable error of the weighing result shall not be greater than the maximum allowable error of the weighing result. 4.5.1 Repeatability
For the load, the difference between the two weighings should not exceed the absolute maximum allowable error. 4.5.2 The standard load
should be measured at the same position on the load carrier according to the maximum force of 2W-! ) or the standard load with the heaviest concentration. The test position is shown in Figure 1 of 65. The error should not exceed the maximum allowable error of the evaluation (the number of fulcrums).
4.On the track in equilibrium, gently put on and remove 40 additional weights of approximately equal absolute value of the maximum allowable error of the corresponding support rate. In reverse order, the measuring bar will move visibly within the visual range. 4.7 Verification of standards
4.7.1 Weights and weighing vehicles
The length difference of the type of slide or weighing vehicle used for the verification track should not be greater than 1/3 of the maximum allowable setting error of the corresponding weight. 4.7.2 Replacement of standard weights bZxz.net
Other constant loads can be used to replace the standard weights, provided that at least 50% of the maximum weight of the scale is available. Under the following circumstances, the amount of stress on the standard code can be reduced: if the repeatability error is not greater than 0.3, it can be reduced to 35% of the maximum sample volume; if the annual point error is not greater than U.2e, it can be reduced to 20% of the maximum sample volume; if the annual point error is not greater than U.2e, it can be reduced to 20% of the maximum sample volume. The repeatability is determined by applying a constant load of 50 meters on the load carrier for the main quality evaluation target. 5 Technical requirements
5.1 General requirements for structure
The design of the track scale should be suitable for the expected service life: 1) The structure of the track scale should be reasonable, strong and durable, with good measurement performance within six nights and nights, and only 13% of the load capacity should be maintained for fast maintenance
5.2 Technical requirements for foundation
) The foundation of the track scale: The construction depth should be not less than 1.8m, and the distance between the side wall of the pit and the load-bearing rod supporting the foundation should be not less than Jo.Sm
b) The track scale with a capacity of 100t should be placed on the track, and there should be a semi-vertical ant of not less than 25m at both ends, and a load protection of not less than 4.5m should be set:
QB/T 1075- 2003
Electrical and lighting facilities should be set up in the pit: 5.3 Minimum sensitivity
When the balance is in the balance state, a small pulse is applied to the additional silicon code whose value is equivalent to the absolute value of the maximum allowable error of the scale, which causes the position of the analysis rod to be determined, which should not be less than 10.5mm. 5.4 Indicator
5.4.1 Scale and slide
5.4.1.1 The scale line width should be constant! Not more than 0.8mm. The scale is composed of the marking skirt. 5.4.1.2 The distance between the mark and the brake should not be less than 2mm, so as to ensure that the uncertainty of the reading does not exceed 0.22. 5.4.1.3 When the slide moves on the scale, it should be limited to the scale zero mark. 5.4.1.4 The instrument should be equipped with a reading indicator. 5.4.1.5 A certain force must be applied to make the instrument move on the scale to prevent it from moving due to vibration. 5.4.1.3 When the instrument is at zero or any position, the indicator of the instrument should correspond to the zero mark or any value mark of the scale, and the deviation should not exceed 1/2 of the line width.
5.4.1. There should be no concave on the instrument to avoid the presence of foreign objects! 5.4.1. The instrument should be correctly placed. The items of the instrument should not be changed during the test. The instrument should not be reduced or retracted.
5.4.2 Balancing and center of gravity adjustment 5.4.2.1 Balancing equipment is a kind of special equipment with different thickness and cannot be moved without adjustment. 6.4.2.2 The center of gravity adjustment device is a kind of belt and the plate should be fixed in position after adjustment and cannot be moved. 5.5 Structural conditions
5.5.1 Balancing indicator
The product should be equipped with an indicator or a fixed data mark to indicate the specific position of the equipment. 5.5.2 Knife, knife bearing, force plate
5.5.2.1 Connection method
. When assembled with a rod and a force plate, the knife bearing should be used as the fulcrum. The knife bearing must be connected to the bearing later.
The measuring machine must take the force potential as the fulcrum.
5.5.2.2 The assembly of the knife and the machine bar should keep the arm ratio unchanged. When assembling, they should be connected or glued. For the same machine bar, the blades of the knife should be kept half-line and located on the same plane. 5.5.2.3 The knife bearing should not be welded to the support or fixed support. It should be able to move on the support and fixed support to prevent it from coming out of the support. 5.5.2.4 The knife baffle plate should limit the movement of the knife in multiple directions. The knife and the baffle plate should be point contact. The contact point should be on the extension line of the knife contact line.
The baffle plate should be a plane, passing through the contact point of the knife: and perpendicular to the contact load of the knife bearing. The knife baffle plate should be connected to the support or support.
5.5.3 Hardness
The hardness of the bearing, reducer, connecting rod, calibrator and other parts is HRC5~62~66.
5.6 The bearing must be equipped with a pressure regulating mechanism. 6. The bearings should be placed at the specified position. The bearings should be placed at the required position to ensure the balance of the bearings. 5.8 The casting surface should be smooth and should not have cracks, shrinkage, cold insulation, pores, etc. 5.9 The punching parts should be neatly installed and straight, and should not have cracks, etc. 4
6 Test method
6.1 Preparation before test
6.1.1 Submit necessary technical documents
B, 1.2 External inspection and release of this component a) Daily test report 5.2, 5.6, 5.7, 5.8, 5.9, necessary fees can be laid to detect the traces of the control test b) Description mark.
6. 2 Test conditions
QB/T1076—2003
8.2.1 The test is carried out under stable conditions. During the test, the temperature difference is not more than 5℃, and the humidity change rate does not exceed 5℃. 6.2.2 The test standard should meet the requirements of 4.7. 6.2.3 Use a locomotive or heavy ... 6.3 Zero point test
6.3.1 The auxiliary light pole should be placed at the learning point, and the load should be balanced. 6.3.2 Determination of the position of the red pole
Make the main light pole of the meter move up and down in the collimator, and its mark should be lit within the same period: the distance from the collimator and the lower edge should not be less than three, and the meter cup should be in a balanced state
6.3.3 Move the support and key points of the meter lever along the effective direction of the knife bearing to the authorized position, and the single bar of the meter can be moved 4 times to compensate for the damage during the balance period.
6.3.4 Set the meter mother. Agent must be friends. Use the empty vehicle to pass through the cutter, and the meter type machine pole capacity will be balanced. 6.4 Weighing test
The test is carried out in the order of material quantity from the beginning to the end. During the test, the following points are tested:
Minimum sample quantity:
Main, minimum or maximum allowable error:
Record the maximum allowable error, maximum allowable error. The test results meet the requirements of 4.4.
6.5 Uneven load test
The standard load test is carried out by moving the standard load-bearing device above the load-bearing device and the adjacent load-bearing device to the load-bearing device. The test is shown in Figure 1. The test network should meet the requirements of 4.5.2. B. Flexibility test
Carry out a flexibility test during the weighing test. The test points are the maximum and minimum values of the auxiliary scale. The test results meet the requirements of 5.3. 6. Adjustment test
To the full load, the test zero point must meet the requirements of 4.4. 6.8 Main and secondary test
Use a load cell of about 50% of the reverse value M and a load cell of about % of the maximum value M to carry out two detailed tests. Each group of tests is repeated 3 times. Each test day, the zero point difference is tested. The test results will meet the requirements of 4.5.1. 6.9 Separate test of snake scale
This test should be carried out separately before installation: 6.9.1 Open the measuring scale and place it on the detection rack: point the knife: take out the inner base plate, 6.8.? Place the ten and auxiliary scales at the zero point separately, adjust or level. Q/T1076-2003
T6F code measurement position
6 inspection micro-car test position diagram
6. White, 3 move the soil bowl to the soil scale number "holding mouth" position, balance the corresponding chain in the two plates, and then calculate the scale "slot" division value according to formula (1) m=M/p
main scale "blocking mouth" division number does not include "mouth") according to the "mouth" flash number of the private value add magnetic code, avoid the test mouth division, "in!" The maximum error of the division is equal to 0.5 times the maximum allowable error of the scale. QB/T10762003
6.9, 4 Under normal use conditions, the standard deviation of the results obtained by an observer for at least 10 readings of the time value shall not exceed 0.2e-
7 Inspection and supervision rules
7.1 Type evaluation
1.1.1 Standard: In the following cases, it is necessary to conduct a type evaluation of the rail balance: a) New product type evaluation:
6) Design, when there are some or all the materials have been improved: c) The product has been discontinued for more than one year and resumed production; d) When the quality inspection agency of the pressure gauge puts forward the type evaluation requirements. 7.1.2 Provide at least one prototype. 1.3 The date of type design is the date of all the test items specified in Chapter 6: 7.2 Factory inspection
7.2.1 Before the balance is shipped, it should be inspected!
. 2.2 Factory inspection: Most soft rail joints can only be installed in the company, and the factory type only conducts a separate test on the running scale and a separate inspection on each component.
8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 Instruction marking
B.1.1.1 Contents of instruction marking
! Name and trademark:
b) Scale, model, specification:
, standard grade:
d) Large scale, small scale, government-approved classification:
e) Scale license and number:
f) Product number and manufacturing station:
? Standard number
8.1.1.2 Requirements for instruction marks
The instruction marks must be small and easy to read (the height of letters must be less than 2mm!). The instruction marks must be placed in a conspicuous and easy-to-see place by means of glue or nails, and cannot be removed without damaging the label.
B.1.2 Packaging marks
In addition to the requirements of GB/T191. and (D6388), the packaging box also has the following marks: a) Product name, model, size:
b) Manufacturer name:
d) Volume.
QB/T10762003
8.1.3 Verification standards The calibration mark should be left on the scale, the diameter should be at least 25mm, and the mark can be seen during use. 0.2 Packaging 8.2.1 The packaging of rail scales should comply with the requirements of GBT13384. 8.2.2 The following technical documents should be provided with the production: a) Instructions for use 6) Product certificate 7) Packing list. 8.3 Transportation 8.4 Storage 8.4.1 The packaging box should be stored in an environment with a temperature of -25~50℃, a relative humidity of less than 90℃, and no corrosive gas in the room.
8.4.2 When storing large bundles or servants outdoors, they should be protected from sliding or being damaged. They should also be padded to prevent the bundles from being damaged by wind and rain.
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