JB/T 3690-1999 Methods for measuring the mass of complete earth-moving machinery, its working devices and components
Some standard content:
ICS53.100
Machinery industry standard of the People's Republic of China, JB/T3690-1999
idt ISO 6016 : 1982
Earth-moving machineryMethods of measuring the mass esof whole machines, their equipment and components1999-08-06Promulgated
State Machinery Industry Bureau
2000-01-01Implementation
JB/T3690—1999
This standard is equivalent to ISO6016:1982 "Earth-moving machinery-Methods of measuring the mass esof whole machines, their equipment and components", and is a revision of JB369084 "Methods of measuring the mass esof whole machines, their equipment and components of construction machinery". Compared with JB3690-84, the technical content of this standard has been changed as follows: 1. The original standard is equivalent to the international standard. Although the technical content is consistent with the international standard, the scope and clauses involved in the standard cannot correspond to the international standard one by one. Therefore, the corresponding modifications have been made in accordance with the principle of equivalent adoption of international standards during this revision: 1. The tables in the standard have been numbered as required. This standard replaces JB3690-84 from the date of implementation. Appendix A of this standard is a reminder appendix
This standard is proposed and managed by the Technical Committee for Standardization of Construction Machinery. The responsible drafting units of this standard are: Tianjin Engineering Machinery Research Institute, Liugong Machinery Co., Ltd., Xiamen Engineering Machinery Co., Ltd. The participating drafting units of this standard are: Longyan Engineering Machinery Factory. The main drafters of this standard are: Wu Runcai, Yang Yaoxi, Huang Xujiu, Li Weiping, Zhong Peiling. This standard was first issued on June 12, 1984. 1
JB/T3690—1999
ISOForeword
ISO (International Organization for Standardization) is a worldwide alliance of national standards bodies (ISO member states). The development of international standards is usually carried out by ISO technical committees. Each member state has the right to participate in established technical committees and topics of interest. International organizations, governments and non-governmental organizations that have liaison with ISO may also participate in this work. The draft international standard is circulated by the technical committee to member states for voting before the ISO Council accepts it as an international standard. International standard ISO6016 was drafted by ISO/TC127 Earthmoving Machinery Technical Committee and voted in member states in January 1981.
The following member states voted in favor:
Australia
Austria
Belgium
Czechoslovakia
No member state voted against it.
Federal Republic of Germany
Italy
Mexico
Romania
Republic of South Africa
Machinery Industry Standard of the People's Republic of China
Shifang Machinery
Mass measurement methods for whole machines, their working devices, and components
Earth-moving madhinary Methods of measuring the masses of whole machines, their equipment and components 1 Scope
JB/T3690-1999
idtIS06016:1982
Replaces JB3690-84
This standard specifies the mass measurement methods for whole machines, their working devices, and components using floor scales, pressure dynamometers (force sensors), or tension dynamometers.
This standard applies to tire-type and crawler-type earth-moving machinery. 2 Definitions
This standard adopts the following definitions.
2.1 Machine
The tire-type or crawler-type machine to be measured for mass. Equipment
The complete set of accessories and components to be installed on the main machine (for example, the blade, boom, hydraulic cylinder or winch, steel cable, etc. installed on the machine according to the application of the machine).
2.3 Components
The main components that constitute the entire main machine, which sometimes need to be removed for repair or replacement. Such as transmission, drive axle, fuel tank, driver's cab, etc.
2.4 Operating mass of the machine refers to the mass of the main machine equipped with standard working equipment, driver (75kg3kg), fuel tank full of fuel, and various systems full of lubricating oil, hydraulic oil, coolant, etc., including the mass of an empty bucket, bucket body or digging bucket. Note: "Empty" means that the machine has no load. 2 The mass of the machine can be measured as required in various special cases and with different spare parts. The working mass of the machine is often one of the above measurements.
2.5 Direct measurement simple measurement This measurement is the result of the reading measured by a measuring device; or the sum of the readings measured by several measuring devices working at the same time.
Indirect measurement complex measurement
This measurement is the sum of the readings measured by several measuring devices working in sequence. 2.7 Apparatus
National Bureau of Machinery Industry 1999-08-0 6 Approved for implementation on January 1, 2000
JB/T3690-1999
Equipment and devices used to measure the mass of a machine or its working devices or parts. 2.8 The "left-hand" and "right-hand" side of a machine refers to the left and right sides of the main direction of travel of the machine. 2.9 The "front axle" and "rear axle" of a machine are determined according to the main direction of travel. 3 Test preparation
The machine should be cleaned and equipped according to the manufacturer's instructions. In indirect measurements, it must be ensured that the working device is in all measurements. The corresponding main machine has the same fixed position. Articulated machines should generally be tested in a straight-line driving state. The brakes should be released when testing tire machines. In order to keep the ground spurs on each side of the crawler machine horizontal, it can be operated if necessary. It must be ensured that the ground reaction force in the horizontal direction is zero. 4 Methods of measuring mass
This standard specifies two measurement methods: direct measurement and indirect measurement. The direct measurement method is the basic measurement method and should be used first. The indirect measurement method can only be used in unavoidable circumstances, that is, when the mass and volume of the machine or its working device or parts are very large, and the direct measurement method is impossible under the conditions of the equipped instruments. 4.1 Required instruments
a) Floor scale:
b) Compression or tension force measurement c) Knife edge support (rolled angle steel can be used for simplicity); d) Pad; e) Level; f) Crane or supporting structure; g) Steel cable (chain or rope); h) Floor scale, pressure dynamometer or tension dynamometer The accuracy of the measured results should be guaranteed, and the measurement quality error should not exceed ±2%. 4.2 Direct measurement method This method is to measure the ground reaction force acting on the machine support axis at the same time, as shown in Figure 1, Figure 2a) or Figure 2b): or when the machine is suspended from the ground for measurement (as shown in Figure 3), measure the force acting on the tension dynamometer. 4.2.1 Method When a floor scale or pressure dynamometer is used, the machine should be placed in the center (see Figure 1). When using several weighbridges or pressure dynamometers, the tires or tracks of the machine should be placed as close as possible to the center of the platforms of these weighbridges or pressure dynamometers (see Figure 2a. For tracked machines, pads and knife-edge supports should be used to ensure that the load applied by the machine mass can be accurately transferred to the weighbridge or pressure dynamometer (see Figure 2b)). When using a tension dynamometer, one end of the steel cable is hung on the lifting point of the machine and the other end is hung on the dynamometer, and then the machine is lifted or the support of the machine is lowered (see Figure 3).
The measurement shall not be less than three times.
4.2.2 Measurement results
JB/T3690-1999
Each measurement result shall deduct the mass of those pads, knife-edge supports or steel cables according to the measurement method adopted. The final result shall be the arithmetic mean of not less than three consecutive measurements. Figure 1 Weighbridge
4.3 Indirect measurement method
Figure 2 Floor scale or pressure dynamometer
Figure 3 Crane hook dynamometer
This method consists in measuring the ground reaction forces acting on the supporting axes of the machine (i.e. the front or rear axle axis, the left or right tire or track axis), in which case the machine should be arranged according to Figure 4a), Figure 4b), Figure 5a) or Figure 5b). Floor scale or pressure dynamometer should be used.
Tension dynamometer is not recommended.
4.3.1 Method
When a floor scale or pressure dynamometer is used, the machine should be placed on the platform one bridge at a time (see Figure 4a) and Figure 4b)) or one side at a time (right or left) (see Figure 5a) and Figure 5b)), while the other bridge (side) is supported on a hard surface close to the floor scale. The result measured is the partial mass of the machine. 3
JB/T3690-1999
When several pressure dynamometers are used, they should be placed successively under the axis of each supporting shaft (front or rear) or under the center line of the tire or crawler track on the left or right side, while keeping the machine in a horizontal position. It is not recommended to use a tension dynamometer, but if it is used, it should be in accordance with the provisions of Appendix A (Suggested Appendix). The measurement shall not be less than three times.
4.3.2 Measurement results
The mass of the pad, the knife edge support and the steel cable should be deducted from the measurement result. The final test result should be the arithmetic mean of the three successive measurements. It often happens that the total mass of the front and rear axles or the left and right sides is not equal to the working mass of the machine due to the horizontal difference between the weighbridge platform and the surrounding ground, or due to the accuracy of the measuring instrument. Therefore, it is proposed that: a) the total mass of the tire-type machine should be the sum of the front and rear masses; b) the total mass of the crawler-type machine should be the sum of the left and right masses. 4.4 Measuring the mass of the working device or part
The mass of the working device or part can be measured by either of the two methods, but the direct measurement method should be preferred. For this purpose, any measuring instrument given in 4.1 can be selected according to the mass and volume of the working device or part. Pad
5 Report of measurement results
The measurement report should at least include the following contents. 5.1 Regarding the machine being measured:
a) Manufacturer's name:
b) Type:
e) Model:
d) Serial number:
Figure 4 Floor scale or pressure dynamometer
Figure 5 Floor scale or pressure dynamometer
JB/T3690-1999
e) Description of the machine's condition and other characteristics during measurement (equipped working devices, components, counterweights, tools, spare parts, tire pressure, etc.);
f Measurement date:
g) Person in charge of measurement.
Instruments and measurement methods used
Description of the weighing instruments and measurement methods used. 5.3
The working quality of the machine and the quality of the machine under other specified conditions shall be recorded in accordance with Table 1Table 1
Measurement position
Measurement value
Average value
Measurement position
Measurement value
Average value
JB/T3690-1999
Appendix A
(Suggestive Appendix)
Tension dynamometer-
-Measurement method
A1 During measurement, the machine should be kept in a horizontal position. The suspension point of the dynamometer should be located at: a) When weighing on the front or rear axle of the machine, the suspension point of the dynamometer must be accurately located at: the intersection of the vertical plane determined by the given front and rear axles and the vertical plane determined by the main longitudinal axis of the whole machine, see Figure A1a) and Figure A1b); b) When weighing on one side of the machine, the suspension point of the dynamometer must be accurately located at: the vertical plane determined by the corresponding longitudinal axis of the left or right wheel or track and the vertical plane determined by the main transverse axis of the whole machine, see Figure A2a) and Figure A2b). Figure A1 Weighing of the front or rear axle of the machine
JB/T3690-1999
Technical force dynamometer
The total holding point of the steel cable and the dynamometer
Tension dynamometer
Figure A2 Weighing of one side of the machine
The total holding point of the steel cable and the dynamometer
Mechanical industry standards
Quality of earth-moving machinery, its working device, and its components Measurement Methods
JB/T3690—1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing, Postal Code 100044)*
Word Count 18,000
Format 880×12301/16 Sheet No. 1
First Edition in March 2000
First Printing in March 2000
Print Quantity 1-500
Price 1,000 Yuan
No. 99-1279
Mechanical Industry Standards Service Network: http:/hvwwJB.ac.cn66606903
The working quality of the machine and the quality of the machine under other specified conditions shall be recorded according to Table 1Table 1
Measurement position
Measurement value
Average value
Measurement position
Measurement value
Average value
JB/T3690-1999
Appendix A
(Suggestive appendix)
Tension dynamometer-
-Measurement method
A1 During measurement, the machine should be kept in a horizontal position. The suspension point of the dynamometer should be located at: a) When weighing on the front or rear axle of the machine, the suspension point of the dynamometer must be accurately located at: the intersection of the vertical plane determined by the given front and rear axles and the vertical plane determined by the main longitudinal axis of the whole machine, see Figure A1a) and Figure A1b); b) When weighing on one side of the machine, the suspension point of the dynamometer must be accurately located at: the vertical plane determined by the corresponding longitudinal axis of the left or right wheel or track and the vertical plane determined by the main transverse axis of the whole machine, see Figure A2a) and Figure A2b). Figure A1 Weighing of the front or rear axle of the machine
JB/T3690-1999
Technical force dynamometer
The total holding point of the steel cable and the dynamometer
Tension dynamometer
Figure A2 Weighing of one side of the machine
The total holding point of the steel cable and the dynamometer
Mechanical industry standards
Quality of earth-moving machinery, its working device, and its components Measurement Methods
JB/T3690—1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing, Postal Code 100044)*
Word Count 18,000
Format 880×12301/16 Sheet No. 1
First Edition in March 2000wwW.bzxz.Net
First Printing in March 2000
Print Quantity 1-500
Price 1,000 Yuan
No. 99-1279
Mechanical Industry Standards Service Network: http:/hvwwJB.ac.cn66606903
The working quality of the machine and the quality of the machine under other specified conditions shall be recorded according to Table 1Table 1
Measurement position
Measurement value
Average value
Measurement position
Measurement value
Average value
JB/T3690-1999
Appendix A
(Suggestive appendix)
Tension dynamometer-
-Measurement method
A1 During measurement, the machine should be kept in a horizontal position. The suspension point of the dynamometer should be located at: a) When weighing on the front or rear axle of the machine, the suspension point of the dynamometer must be accurately located at: the intersection of the vertical plane determined by the given front and rear axles and the vertical plane determined by the main longitudinal axis of the whole machine, see Figure A1a) and Figure A1b); b) When weighing on one side of the machine, the suspension point of the dynamometer must be accurately located at: the vertical plane determined by the corresponding longitudinal axis of the left or right wheel or track and the vertical plane determined by the main transverse axis of the whole machine, see Figure A2a) and Figure A2b). Figure A1 Weighing of the front or rear axle of the machine
JB/T3690-1999
Technical force dynamometer
The total holding point of the steel cable and the dynamometer
Tension dynamometer
Figure A2 Weighing of one side of the machine
The total holding point of the steel cable and the dynamometer
Mechanical industry standards
Quality of earth-moving machinery, its working device, and its components Measurement Methods
JB/T3690—1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing, Postal Code 100044)*
Word Count 18,000
Format 880×12301/16 Sheet No. 1
First Edition in March 2000
First Printing in March 2000
Print Quantity 1-500
Price 1,000 Yuan
No. 99-1279
Mechanical Industry Standards Service Network: http:/hvwwJB.ac.cn6660690
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