This standard specifies the type test items and test methods for plateau crawler bulldozers. JB/T 6039.2-1992 Type test methods for plateau crawler bulldozers JB/T6039.2-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6039.2-1992
Highland Crawler Bulldozer
Type Test Method
Published on 1992-05-28
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1993-01-01
Mechanical Industry Standard of the People's Republic of China
Highland Crawler Bulldozer
Type Test Method
1 Subject Content and Scope of Application
JB/T6039.2-1992
This standard specifies the type test items and test methods for highland crawler bulldozers (hereinafter referred to as highland bulldozers). This standard is applicable to highland bulldozers (excluding hydrostatic transmission types) used in areas with an altitude of 2000 to 4000m. Regular inspections of highland products can refer to this standard. Reference standards
JB1666 Crawler bulldozer test method
JB3826 Diesel engine performance test method for construction machinery 3 General provisions
3.1 Two prototypes are provided for type test. Plateau industrial test and plateau whole machine performance test can be carried out on the two prototypes respectively. 3.2 In addition to the preparation of technical data of the plateau bulldozer for test, which shall comply with the provisions of Article 1.3.1 of JB1666, the preparation shall also include the bench test report of the matching engine at an altitude of 3500-4000m, the instructions for plateau device components and performance test data. 3.3 All performance test items specified in this standard must be carried out at a test site at an altitude of 3000-4000m or in a laboratory simulating the same conditions.
The test site for positioning, traction and driving shall comply with the provisions of Article 1.3.3 of JB1666. 3.4 The measuring instrument
should comply with the provisions of Article 1.3.2 of JB1666. 3.5 The measurement accuracy requirements
should comply with the provisions of Article 1.4 of JB1666. 3.6 The running-in and acceptance of the Sichuan Plateau bulldozer shall comply with the provisions of Article 1.5 of JB1666. Machine performance test
4.1 Positioning test
4.1.1 Measurement of main geometric parameters.
4.1.2 Mass measurement.
4.1.3 Determination of center of gravity.
4.1.4 Determination of operating force and stroke of the operating device. Articles 4.1.1~4.1.4 shall comply with the requirements of Articles 2.1~2.4 of JB1666 respectively. 4.1.5 The performance measurement of the bulldozer shall comply with the provisions of Chapter 3 of JB1666, and two conditions of altitude and air pressure shall be added in Table 7. 4.1.6 Plateau low temperature start test
The prototype adopts plateau low temperature start measures. At an altitude of 3000m or more, the ambient temperature is -23 to -25℃, and the machine is stopped for more than 12 hours and put in the neutral position. The test conditions, test methods, and measurement items should refer to the provisions of Articles 4.1.2 to 4.1.4 of JB3826, and the machine should be started within 8 minutes. Approved by the Ministry of Machinery and Electronics Industry on May 28, 1992 and implemented on January 1, 1993
JB/T6039.2-1992
The test location, altitude, air pressure, temperature, humidity and other conditions and test results should be recorded in detail. 4.2 Driving performance test
4.3, traction performance test
Articles 4.2 and 4.3 shall comply with the provisions of Chapter 4.5 of JB1666, and three additional conditions, namely, altitude, air pressure, and hydraulic transmission temperature, shall be added in Tables 8 to 14.
4.4 Thermal balance test
shall comply with the provisions of Chapter 6 of JB1666, and three additional conditions, namely, altitude, air pressure, and relative humidity, shall be added in Tables 15 and 16. 5 Bulldozer operation test
shall comply with the provisions of Chapter 7 of JB1666.
Visual field test.
4.7 Noise test.
Articles 4.6.4.7 shall comply with the provisions of Chapter 8 and 9 of JB1666 respectively. 4.8
Determination of cab insulation and heating
When operating under the condition of -10℃, the cab is closed, the mining system is turned on, and the temperature in the cab is measured after 30 minutes. Vibration test
Should comply with the provisions of Chapter 10 of JB1666
Highland industrial test
1 Test purpose
The purpose of the plateau industrial test is to conduct a comprehensive assessment of the feasibility and economy of the plateau bulldozer under plateau field conditions to evaluate the product quality indicators. The contents are:
a. Assessment of plateau bulldozer reliability indicators; assessment of plateau bulldozer productivity and fuel consumption rate; b.
Assessment of driver working conditions;
Assessment of technical maintenance and repair convenience;
Evaluation of the stability of the performance of the plateau bulldozer. Test site
The test should always be carried out at a plateau operation site at an altitude of 2000 to 4000m. Test period and requirements
The duration of the industrial test of plateau bulldozers can be selected within the first overhaul period after the prototype leaves the factory according to the specific requirements for reliability indicators, and the time is set at 600h. Among them: the test at an altitude of more than 3000m is not less than 300h; the test in winter (below -15℃) is not less than 100h. 5.4 Test conditions.
5.5 Test instruments and equipment.
5.6 Test methods.
5.7 Test results.
Articles 5.4 to 5.7 should comply with the provisions of Articles 11.1 to 11.4 of JB1666 respectively. Among them, Tables 20 to 25 add two conditions: altitude and average air pressure.
5.8 Technical inspection
After all the test items are completed, the bulldozer should be partially disassembled for inspection, and the technical status of the whole machine and its parts should be identified. The contents are: the normal status of the supercharger and the intercooler; a.
The filtering performance of the plateau air filter;
The applicability, reliability and sensitivity of the low-temperature starting device: 6
JB/T6039.21992
The applicability and reliability of the water and oil cooling system; d.
The reliable status of the cab heating and defrosting; The adaptability and durability of the use of low-temperature hydraulic oil and hydraulic transmission oil; The applicability, durability and reliability of lubricating oil and grease; The welding integrity of the frame and supporting parts; The reliability of fastening, riveting and welding parts; The quality reliability of seals and rubber parts;
Maintainability evaluation;
The adaptability of low-temperature batteries;
The rationality of the allocation of special tools, spare parts and technical documents. On the basis of the appraisal, the quality of the whole machine and its parts shall be evaluated. Compilation of test results
After the test, a type test report shall be prepared, which shall include: preface;
conditions and results of the whole machine performance test;wwW.bzxz.Net
.Conditions and results of plateau industrial test; c.
Conclusions and suggestions;
Appendix.
Industrial test and other instructions
According to the provisions of Appendix A of JB1666.
Additional instructions:
This standard was proposed and managed by the Tianjin Engineering Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Xining Plateau Engineering Machinery Research Institute. The main drafters of this standard are Feng Huisheng, Chu Xin, and Zeng Zhong. 3
People's Republic of China
Mechanical Industry Standard
Highland Crawler Bulldozer
Type Test Method
JB/T 6039.21992
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Sheet 3/8
Format 880×1230
Word Count 6,000
First Edition in March 1992
First Printing in March 1992
Print Quantity 1-500
Price RMB 10.00
Mechanical Industry Standard Service Network: http://www.JB.ac.cn661_6509
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