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JJG 234-2012: Verification Regulation of Automatic Rail-weighbridges
Status: Valid JJG 234: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 234-2012 | English | 459 |
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Verification Regulation of Automatic Rail-weighbridges
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JJG 234-2012
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| JJG 234-1990 | English | 279 |
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a Motion Weighing Railway Track Scale
| Obsolete |
JJG 234-1990
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| JJG 234-1981 | English | RFQ |
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(Chinese Industry Standard)
| Obsolete |
JJG 234-1981
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PDF similar to JJG 234-2012
Basic data | Standard ID | JJG 234-2012 (JJG234-2012) | | Description (Translated English) | Verification Regulation of Automatic Rail-weighbridges | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Classification of International Standard | 17.060 | | Word Count Estimation | 20,284 | | Older Standard (superseded by this standard) | JJG 234-1990; JJG 709-1990 | | Quoted Standard | JJG 567; JJG 781; GB/T 2887-2000; GB/T 8170-2008; OIML R106-1997; GB/T 11885 | | Adopted Standard | OIML R106-1997, NEQ | | Regulation (derived from) | AQSIQ Announcement No. 35 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to automatic track scale (hereinafter referred to as "Track Scale") of the initial verification, testing and use of follow-up checks. | JJG 234-2012: Verification Regulation of Automatic Rail-weighbridges---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.
Verification Regulation of Automatic Rail-weighbridges
State verification procedures People's Republic of China
Automatic Railway Track Scale
Issued on. 2012-03-02
2012-09-02 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Automatic Railway Track Scale test procedures
Replacing JJG 234-1990
JJG 709-1990
Focal point. the National Technical Committee of measurement scales
The main drafting units. National Track Scale Metering Station
Ministry of Railways Institute of Measurement Standards
Participated in the drafting. National Track Scale Metering Station Shanghai sub-station
National Track Scale Metering Station Lanzhou substation
The measurement procedure commissioned the National Technical Committee is responsible for interpreting scales
The main drafters of this procedure.
Li Shilin (National Track Scale Metering Station)
An Aimin (National Track Scale Metering Station)
Shao Xuejun (National Track Scale Metering Station)
Segment small army (MOR Standards and Metrology Institute)
Wu Jun (Ministry of Railways Institute of Standards and Metrology)
Drafters participate.
Luo Jianmin (National Track Scale Metering Station Shanghai sub-station)
Geng Jie (National Track Scale Metering Station Lanzhou substation)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2. References (1)
3 terminology and units of measurement (1)
3.1 The term (1)
3.2 units of measurement (2)
4 Overview (2)
5 metering performance requirements (3)
5.1 accuracy class (3)
5.2 verification scale interval (e) (3)
5.3 The maximum permissible error (3)
6 General Requirements (4)
6.1 Security (4)
6.2 indicates weighing results (4)
6.3 Vehicle identification means (4)
6.4 Installation Status (4)
6.5 Software Requirements (4)
6.6 load cell and weighing instruments (5)
Flag 6.7 (5)
7 control of measuring instruments (5)
7.1 initial verification, use and subsequent verification check (5)
7.2 test conditions (6)
7.3 test items and test methods (6)
7.4 Verification Results Processing (8)
7.5 test cycle (8)
Appendix A weighing results to determine an indication of the weighing results and Examples (9)
Appendix B test recording format (informational) (11)
Appendix C control instrument and the reference vehicle (13)
Introduction
JJG 234-2012 "Automatic Railway Track Scale" is based on the International Organization of Legal Metrology (OIML) issued by OIML
R106.1997 "Automatic Railway Track Scale" in English (AutomaticRail-weighbridges), based on
JJG 234-1990 "dynamic weighing track scale" amendments, combined with our automated rail scale verification of the actual situation
Condition, retained JJG 234-1990 "Dynamic weighing track scale" and JJG 709-1990 "non-traction Dynamic Weighing
Track Scale "verification regulation in effective content that will fall into the dumper weighbridge JJG 781" Digital Indicating Railway Track
Balance "for examination. Compared with JJG 234-1990, in addition to editorial changes outside the main technical changes are as follows.
--- Adds automatic weighbridge common terminology;
--- Automatic Railway Track Scale Accuracy grade in the original 0.2, 0.5, based on increased levels 1 and 2;
--- Increased train weighing accuracy classes;
--- Increased use of subsequent verification and inspection requirements;
--- In the first test, and subsequent verification check does not use static weighing;
--- Adopt international recommendations OIMLR106 maximum permissible error requirements of dynamic weighing calculated and determined;
--- Increased labeling requirements;
--- Increase the software requirements;
--- Initial verification and subsequent verification of the group and the number of trips have been adjusted;
--- Ordained as the use of automatic control instrument track scale requirements.
The previous versions of the release JJG 234-1990 case.
--- JJG 234-1981.
Automatic Railway Track Scale test procedures
1 Scope
The order applies to automatically track scale (hereinafter referred to as "Track Scale") of the initial verification, verification and subsequent use
an examination.
2. References
This procedure references the following documents.
JJG 567 testing wagons
JJG 781 Digital Indicating Railway Track Scale
GB/T 2887-2000 General specification for computer sites
GB/T 8170-2008 revised value represents about rules and limit values and judgment
GB/T 11885 Automatic Railway Track Scale
OIMLR106.1997 Automatic Railway Track Scale (AutomaticRail-weighbridges)
For dated references, only the dated edition applies to this procedure; undated reference documents
Member, the latest edition (including any amendments) applies to this procedure.
3 terminology and units of measurement
3.1 Terms
3.1.1 Automatic Railway Track Scale automaticrail-weighbridge
According to a predetermined program of traveling in railway wagons were weighed, having weighed data processing, judge, indicating
And printing functions such as an automatic weighing instrument.
3.1.2 Control instrument controlinstrument
Determining a reference vehicle mass weighing static weighing.
3.1.3 The overall track bed solidconcreteroadbed
And the carrier base and anti-climb undercarriage as a single entity, on the basis of stable load-bearing structures at both ends of the carrier constructed.
3.1.4 carrier loadreceptor
Weighbridge for load-bearing device.
NOTE. Track Scale carrier can be divided into single-carrier and multi-carrier.
3.1.5 module module
Weighbridge completed one or more specific functions identifiable parts, and the relevant national regulations in accordance with the measurement
And technical performance requirements of a separate evaluation.
3.1.6 Non-hang together vehicle uncoupledwagon
Not with a locomotive or other vehicle connected to a single vehicle.
3.1.7 hang together vehicle coupledwagon
Locomotive or other vehicle with interconnected vehicles.
3.1.8 Trains train
Several sections with or without joint hanging locomotive including vehicles.
3.1.9 track scale testing wagons testvehicleforrail-weighbridge
Quality and value with a known standard, for verification, testing railroad track scale special vehicles, referred to as "testing wagons."
3.1.10 reference vehicle referencewagon
Controlled by the weighing instrument, dynamic test, the detection is temporarily used as quality standards for railway vehicles.
3.1.11 mixed vehicle mixedwagon
Program testing wagons group of railway wagons.
3.1.12 axle weighing axleweighing
Called axis of the vehicle successively by weighing the same carrier conducted.
3.1.13 bogie weighing bogieweighing
He called successive bogie vehicle by weighing the same carrier conducted.
3.1.14 Vehicle Weighing fuldraughtweighing
The entire vehicle through the carrier weighing.
3.1.15 dynamic weighing weighing-in-motion
Railway vehicle running state weighing.
3.1.16 static weighing staticweighing
Railway vehicle in a stationary state of weighing.
3.1.17 train weighing trainweighing
Hang together determine the cumulative mass of the vehicle weighing.
3.1.18 maximum weighing speed maximumoperatingspeed
Dynamic weighing track scale the highest permissible vehicle speed, the weighing results may occur when exceeding this speed is too large
Relative error.
3.1.19 Minimum weighing speed minimumoperatingspeed
Dynamic track scale when weighing the minimum allowable vehicle speed, the weighing results may occur below this speed is too large
Relative error.
3.1.20 Weighing speed range rangeofoperatingspeed
Dynamic range between the lowest and highest speeds between weighing when weighing.
3.1.21 maximum speed by maximumtransitspeed
Weighbridge allows maximum speed through the exceeding this speed will allow the instrument to cause permanent damage.
3.2 units of measurement
Track scale units of measurement used are. kilograms (kg), t (t).
4 Overview
Weighbridge for weighing railway wagons loaded cargo from the base, the load cell, the carrier, weighing instruments,
Printers and other devices composed of weighing instruments weighing vehicle load sensor output signals are processed automatically converted to
Quality and value to arrive at quality during operation of the vehicle or train.
5 metering performance requirements
Minimum capacity weighbridge is 18t, the maximum capacity of 100t.
5.1 accuracy class
Track scale is divided into four accuracy classes. 0.2, 0.5, Level 1 and Level 2.
For vehicle weighing and train weighing, the same track scale can have a different level of accuracy. Train weighing accuracy
Grade from the actual test vehicle weighing data is calculated.
5.2 verification scale interval (e)
E Verification scale should be 1 × 10k, 2 × 10k, 5 × 10k (k is a positive integer) in the form of representation.
Level of accuracy, verification and test division value relationship between scale intervals in Table 1.
Table 1 level of accuracy, and the relationship between the verification scale verification scale intervals between
Accuracy Level
Verification scale interval e
(Kg)
Verification scale intervals n = Max/e
Minimum Maximum
0.2 ≤50 1000 5000
0.5 ≤100 500 2500
1 ≤200 250 1250
2 ≤500 100 600
5.3 The maximum permissible error
Dynamic Weighing the maximum permissible error in Table 2.
Table 2 Dynamic Weighing the maximum permissible error (MPE)
Accuracy Level
As a percentage of vehicle and train quality representation
For the first time (follow-up) verification checks use
0.2 ± 0.10% ± 0.20%
0.5 ± 0.25% ± 0.50%
1 ± 0.50% ± 1.00%
2 ± 1.00% ± 2.00%
Note. the quality of 18t ~ 35t 35t vehicle is calculated according to the maximum permissible error.
5.3.1 Vehicle Weighing
Calculation per vehicle scale testing in accordance with Table 2 or the appropriate level of accuracy of the reference vehicle maximum permissible error, press
GB/T 8170 into the house rules about repair integer obtained after rounding the maximum permissible error.
If the calculated maximum permissible error is less than 1e, the weighing point of the maximum allowable error Press 1e processing.
5.3.2 Train Weighing
Calculation train (hang together or reference testing wagons total mass of the vehicle) of the maximum permitted under the appropriate level of accuracy in Table 2
Error, according to GB/T 8170 into the house rules about repair integer obtained after rounding the maximum permissible error.
If the calculated maximum permissible error is less than 5e, the maximum permissible errors train weighing press 5e processing.
6 General technical requirements
6.1 Security
6.1.1 fraudulent use
Weighbridge should not have characteristics of fraudulent use, should be set up protective measures for preventing non-normal adjustment track scale
And use.
6.1.2 accident disorders
Weighbridge should be designed to prevent interference can track scale measurement of performance surprises disorders, disorders occur when the accident should enter
Prompt.
6.1.3 reverse midway weighing
Called vehicle weighing appears during reverse driving, the weighbridge should be able to make automatic or manual intervention, said the
Invalid amount.
6.2 indication of weighing results
6.2.1 Weighing instructions
Weighbridge weighing instrument weighing at least should display and print the date, serial number, license number (if required), vehicle mass,
Weighing speed, weighing time, it should be beyond weighing range weighing speed and prompt.
Digital indication should be displayed based on the effective value of decimal points. Fractional part with the decimal point (dot under) to
Integer separate indication when its display should have at least one digit to the left of the decimal point on the right shows all the decimal places. Indication
The numbers and units should be stable, clear and easy to read, the unit of measurement should be consistent with the requirements of 3.2, which for example Mitsuke
Record A.1.
6.2.2 printout
Print data should be clear, durable, measuring unit name or symbol should also be printed on the right side of the value or values
The top of the column, and consistent with national requirements specification.
6.2.3 Indication of consistency
Digital Indicating and printing devices indication should be consistent.
6.2.4 Weighing range
For weighing less than the minimum or greater than the maximum capacity of the vehicle shall be prompt.
6.3 Vehicle identification device
Weighbridge should be equipped with the vehicle identification device. The device should be able to determine the vehicle has entered the weighing area and vehicle weighed.
Track scale used in one direction, if the opposite direction through the weighbridge should give an error message or not display vehicle
quality.
6.4 Installation Status
6.4.1 base and drainage
Track scale basis should be consistent with GB/T 11885 with the relevant requirements, should not have deposits, and partial rupture under
Shen. If the mechanical part of the track scale is located within the pit should be taken to drainage measures to ensure that the weighbridge is not soaked.
6.4.2 carrier and rail
And the installation of the rail carrier should be able to meet the performance measurement requirements. Cited rail and rail should weigh the same horizontal plane, should
Anti-climbing measures. Cited rail and rail weighing should be the same type of rail.
6.5 Software Requirements
Software track scale use of software should be used consistent with the type approval, except calibration parameters.
6.6 load cell and weighing instruments
Load cell and weighing instrument should have the certificate, and shall be consistent with the type approval certificate.
6.7 mark
6.7.1 Forced essential mark
--- Manufacturing license logo, serial number;
--- Track scale production plant name;
--- Weighbridge name and type;
--- Vehicle weighing accuracy classes;
--- Verification scale interval e;
--- Maximum capacity;
--- Minimum capacity;
--- Weighing mode (weighing axis, truck weighing, vehicle weighing);
---Serial number;
--- Weighing speed range;
--- Carrier length.
6.7.2 descriptive markings
--- Weighing range (liquid or solid) of the load applicable;
--- Supply voltage;
--- AC power frequency;
--- Temperature range (when not -10 ℃ ~ 40 ℃ should be marked).
6.7.3 Verification mark
--- Test unit;
--- Test personnel;
--- Test date;
--- Effective Date;
--- Vehicle weighing accuracy classes;
--- Train weighing accuracy class.
6.7.4 Additional signs
If you have a special purpose railway scale, increase the notations.
6.7.5 mark requirements
Flag should be set in the weighing instrument and the carrier is easy to see the site.
Flag should have a certain size, shape, the use of stable and durable material, the content should be the state of FIG.
Shape or symbol, legible and securely installed.
7 control of measuring instruments
Control of measuring instruments include. initial verification, use and subsequent verification check.
7.1 initial verification, use and subsequent verification check
7.1.1 Initial verification
Verification by measurement institutes in the installation has been completed, the normal operation of the track scale.
Verification mechanism may require the applicant to provide the necessary equipment, personnel and a control instrument. If compliance with Appendix C
Weighing control requirements, subject weighbridge can be used as the control instrument. Initial verification carried out by the project 7.3.1 provisions.
7.1.2 Follow-up test
Subsequent verification carried out by the project 7.3.1 provisions.
7.1.3 Use check
Check use by item 7.3.1 be prescribed.
7.2 verification Conditions
7.2.1 measurement standards
7.2.1.1 testing wagons
Comply JJG 567 "testing wagons" required testing wagons.
7.2.1.2 reference vehicle
Comply with the requirements of railway transportation, quality and stability of the truck, and the nature of its contents were similar to normal weighing.
7.2.2 Environmental conditions
There should be no accumulation of water inside and 7.2.2.1 Track Scale Pit;
7.2.2.2 should provide three-phase power supply 380V/20A alone;
7.2.2.3 weighing room should have enough floor area to facilitate placement equipment, indoor temperature and humidity should be consistent
GB/T 2887 in Class B requirements, scale room location should be easy to observe the vehicle running state (or install monitoring equipment);
Power meter ground should be consistent with GB/T 2887 in C-level requirements;
7.2.2.4 railway line must be open and stable;
7.2.2.5 In case of rain, snow and other circumstances that may affect the verification work should stop checks.
7.3 test items and test methods
7.3.1 Verification Project
Verification list of items in Table 3.
Table 3 List of test items
Initial verification test project using the subsequent verification check
5.1 accuracy class
5.2 verification scale
5.3 The maximum permissible error
6.1 Security - -
6.2 weighing results indicating - -
6.3 Vehicle identification device - -
6.4 Installation Conditions -
6.5 Software requirements - -
6.6 load cell and weighing instruments - -
6.7 mark -
Note. The table "" indicates the project should test; "-" indicates that the project may not be accredited.
7.3.2 Verification Method
7.3.2.1 Accuracy class
Check the prescribed subject weighbridge flag accuracy class 5.1 compliance and type approval requirements.
7.3.2.2 verification scale
Verification scale checks prescribed subject weighbridge mark meets the requirements of 5.2.
7.3.2.3 The maximum permissible error
a) dynamic weighing
Testing wagons or lorries to track scale permitted by the speed of the carriage back and forth through at least three times. After allowed to transfer
Whole, while checking prompts outside the range of weighing speed.
Based on the total mass of about 20t, 50t, 68t, 76t, 84t of five car testing wagons compiled the following groups.
1) Locomotive -84t-50t-76t-68t-20t;
2) locomotive -68t-76t-50t-84t-20t.
When the test the first time after the test group for examination and overhaul two subsequent test (except overhaul after verification) and make
Check with the use of one of the group for examination.
For weighbridge initial verification and overhauled in the verification process, the quality can be adjusted scale testing wagons. must
To, the balance between the locomotive and the car seized more than 3 to add a mixed load of the vehicle, check the track scale for various models of discrimination
ability.
When verification testing wagons weighing speed to a predetermined range flag back and forth 10 times each test shall meet the maximum allowable 5.3
Xu error requirements. Track Scale for use in one direction, the direction should use test 10 times, should be consistent with the 5.3
Great tolerance requirements.
b) Indication of weighing results calculation error
Weighbridge weighing result shows the value of a calculation error, see equation (1).
E = I-m0 (1)
Where.
Indication error E --- weighbridge weighing, kg;
I --- indication of the weighing track scale testing wagons or reference vehicle, kg;
Standard values m0 --- testing wagons or reference vehicle, kg.
c) determination of weighing results
Hang together when the vehicle weighing, dynamic weighing maximum permissible error in Table 2 are calculated after the repair is about integers,
90% (calculated for each group in each weighing point) weight value must not exceed the maximum permissible error after rounding
Poor, not exceeding 10% (for each group in each weighing point calculations) of weight can exceed after rounding
The maximum permissible error, but shall not exceed twice the error; not hang together vehicle weighing, all dynamic weight values should
In line with the maximum allowed after rounding error; train weighing, all dynamic weight values should be consistent with the maximum allowed after rounding
Xu error, for example in Appendix A.2.
7.3.2.4 operational safety
Action Check whether the guard rail scale calibration parameters to modify hardware or software, check the weight of the vehicle, speed
Whether prompts and alarm functionality beyond the permitted range, to check whether the track scale to meet the requirements of 6.1.3.
Indication 7.3.2.5 Weighing results
Check the weighbridge meets the requirements of 6.2.
7.3.2.6 Vehicle identification device
Check the weighbridge meets the requirements of 6.3.
7.3.2.7 Installation Status
Check the weighbridge meets the requirements of 6.4.
7.3.2.8 Software
Check the weighbridge software meets the requirements of 6.5.
7.3.2.9 weighing sensor and weighing instruments
Check whether the load cell and weighing instrument having a certificate.
7.3.2.10 Flag
Check the weighbridge mark meets the requirements of 6.7.
Processing 7.4 Verification Results
In accordance with the procedures required certified by a test certificate issued to track scale, rail scale test failed test results issued
Notice, and indicate the failed project.
7.5 test cycle
Track Scale test cycle is generally not more than 1 year.
Appendix A
Weighing results indicative of the determination and the weighing result example
A.1 indicates weighing results
example 1
Date. September 1, 2010
License plate number Weight (kg) Speed (km/h) when the minutes and seconds
1806623682280 8.0 10.13.10
A.2 weighing results of determination
Example 2 Vehicle Dynamic weighing for the first time (follow-up) verification
For hang together vehicle weighing accuracy grade is 1, e = 200kg of railroad scale testing wagons standard value
22280kg, 35000kg calculated according to the maximum permissible error.
MPE is. 35000kg × (± 0.50%) = ± 175kg;
MPE after rounding to (within double error). ± 175kg < 1e, the MPE take ± 200kg;
Twice the MPE. ± 400kg (2e);
Outside double error. Mor...
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