This standard specifies the technical requirements, test methods, inspection rules and packaging requirements for agricultural double-acting cylinders. This standard applies to agricultural cylinders with a rated pressure not exceeding 20MPa. JB/T 9834-1999 Technical requirements for agricultural double-acting cylinders JB/T9834-1999 Standard download decompression password: www.bzxz.net

ICS65.060.10
Machinery Industry Standard of the People's Republic of China
JB/T9834-1999
Double acting cylinders for agricultural -- Specifications1999-08-06Promulgated
National Bureau of Machinery Industry
20-01-01Implementation
.ID/T9834—1999
This standard is a revision of ZB T62002—90 "Technical Specifications for Double Acting Cylinders for Agriculture" and ZB T62003—90 Test Methods for Double Acting Cylinders for Agriculture". The above two standards will be merged during the revision, and the following major technical contents will be changed from the original standards: the durability cycle number of cylinder
is changed from 26×104 times to 30×10*; the requirements for the deactivation degree of tears and the detection method of full deactivation degree are added. This standard replaces HT62002-90 and HT62003-90 from the date of implementation. This standard is issued by the Technical Committee for the Promotion of Tractor Standards and is under the jurisdiction of Luoyang Tractor Research Institute. The main drafters of this standard are Ma Quan and Chen Linhui. 1 Scope
Machinery Industry Standard of the People's Republic of China
Technical conditions for double-acting hydraulic cylinders for agriculture
Duble aelie cylinders for agriculture....SpecificationsJB/T 9834-1999
代卜7D T62002--90
Z,R T62 003—90
This standard specifies the technical requirements, test methods, inspection rules and packaging requirements for hydraulic cylinders for agriculture. This standard is used for oil pressure test (hereinafter referred to as oil pressure test) with a rated pressure greater than 20MPa. 1.2 Reference standards The provisions contained in the standard are cited in the current standard and constitute the provisions of this standard. When this standard is published, all versions are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest version of the following standards. GR/T37GG—1983 General technical conditions for hydraulic systems GRT7935—1987 General technical conditions for micro-pressure components JR5673—1991 Agricultural standard tractor Technical conditions for the use of machinery and equipment Repair, replacement and return of machinery products in the clothing industry 3 Technical requirements
3.1 The production station of the oil cylinder shall comply with the requirements of this standard and shall be manufactured according to the product drawings and technical documents approved by the current process: 3.2 The parts of the oil cylinder (including outsourced parts) shall comply with the specifications of 1.2 and 1.5 in GB/T7935-1987. 3.3 The frequency of the friction surface of the piston rod shall meet the requirements of rust prevention and wear. 3.4 The oil cylinder shall have a piston rod dust removal device. 3.5 The working surface and platform of the main wear parts such as the plate, the live rod, the live rod and the guide sleeve shall be The surface is not allowed to have rust, scratches, or defects. All sealing parts and dust removal parts must not be damaged. 3. Before assembling, burrs and sharp edges should be removed and cleaned. During assembly, clean engine oil should be applied to the cylinder sleeve, plug, lever and guide working surface and seals. 3. The stroke of the oil cylinder should be controlled. 1. The operation of the mechanism should be sensitive and reliable. 3.8 All connecting threads should be tightened with the torque required by the design. 3.9 The performance of the single cylinder should meet the requirements of Table 1. 3.10 Cleanliness. The mass of contaminants in the oil cylinder with a stroke of no more than 300mm should not exceed that in Table 2. For oil cylinders with a stroke of more than 300mm, the stroke increases by (m, and the mass of pollutants is allowed to increase by 10% of the specified value. 3.11 Appearance
3, 11.1 The oil surface should be smooth, the angle should be flat and natural, the weld should be flat, and there should be no edges or kings. 3.11.2 The signs should be clear and correct, and the installation should be firm and flat. 3.11.3 The oil surface should comply with the provisions of 5673. The color of the topcoat can be determined according to the requirements of the user. The chamber support, positioning valve, approved by the State Machinery Bureau on October 6, 1999
2(000HU1-01 Implementation
JB/T9834—1999
Surface, oil inlet and outlet, such as the mounting surface and the nameplate, shall not be painted, and the plating shall be evenly polished, without cracks or rust. 3.11.4 Other exposed surfaces such as the oil-bearing parts shall have anti-rust measures. Table
Test run
Abstract starting pressure
New pressure
Internal world
Foreign language|| tt||Positioning performance
Business efficiency
High performance
Durability
Pollution quality
Test method
4.1 Test conditions
4.1.1 Test equipment
Technical requirements
The piston moves evenly, without any abnormality such as phase displacement and external need. The starting bed force should not be large. 3MPa
Not set There are external connections, machine damage or short-term deformation, etc. The maximum movement of the internal and external pull is not more than 100m, the pool diameter is not more than 0.0 (m), and the positioning is monitored and recorded. There is no swimming phenomenon. The oil temperature at the dense fiber place is greater than 2 specified in the table item 5. There is also no leakage before and after the test. The internal and external oil volume does not exceed the value in the table item 4. 5.2.5 times the specified position, pregnant with mixed spine but bad phenomenon
4.1.1.1 Test negative hydraulic system principle Refer to Figure 13
1-section test cylinder;
2-Dynamometer: 3-oil department
90-125
JB.9634-1999
4.1.1.2 The requirements for each component in the test line shall comply with the provisions of GB 3766. 4.1.2 Instruments 4.1.2.1 The test instruments shall be calibrated by the relevant departments and within the effective period of use, 4.1.2.2 The instrument accuracy and range shall comply with the requirements of Table 3, Table 3 Instrument Name Jinlisi Dynamometer Stopwatch Meter Range Maximum measurement value 14-2.2. Maximum 1.5-2.5 sieve Note: The performance test instruments in the type test and the performance test instruments in the durability test shall use the same H grade, and the performance test shall be a test group. 4.1.3 Test oil 4.1.3.1 The test oil is a natural oil with a viscosity of 21-35c51 when the oil temperature is 65°C. It is recommended to use decompression and transmission oil X100D. 4.1.3.2 The sugar content of oil filter is not less than 25um. 4.1.4 Test oil shock
Except for the temperature reduction test, the oil temperature of other tests is 65±4. When detecting internal leakage, the ambient temperature should not be lower than 15℃. The oil temperature of the test opening is 65±4℃.
4. 1. 5 Test pressure
The test pressure is the rated pressure unless otherwise specified. 4. 1. 6 Determination
The measured parameter value can be recorded only when the difference of the controlled parameter meets the requirements of Table 4. When the internal leakage detection starts, it should also meet the requirements of Table 4.
Control change
Note, the performance test in the type test and the stability test are in B level, and the stability test and factory test are in C level. 4.1, the measurement lead point position
4.1.7.1 Measurement lead point position: The distance from the pressure measurement lead point to the oil inlet and outlet should be (2~.4)d () is the oil pipe diameter 2, and the disturbance source should be avoided.
4.1.7.2 Auxiliary temperature lead point position: The distance from the temperature measurement lead point to the oil cylinder inlet and outlet should be (-8) (d is the pool pipe diameter). If the lead point position cannot be achieved, it can be adjusted appropriately and the actual position and size of the lead point should be noted in the report, and any size should be considered.
4.2 Test methods
4.2.1 Type test
4.2.1.1 Performance test
JB/F9834—1999
The test samples shall be selected in accordance with the provisions of 5.3.1, and the test items and methods shall be carried out in accordance with the provisions of Table 5. 4.2.1.2 Long-term test
4.2.1.2. One cylinder to be tested shall be randomly selected from the qualified products after the factory test. 4.2.1.2.2. Firstly, check the performance of the tested cylinder according to item 1 to item 6 in 5. The inspection results should meet the requirements of Table 1. Then, carry out the durability test. The test items are: starting force, positioning, high benefit performance, test method, test oil cut-off, after removing the air, the vertical force and dynamic pressure in the air should be selected, and then the whole test should be carried out. Repeat the operation 5 times
and give the two test chambers the external load of oil, and add force until the opening and closing rate produces movement. The pressure at which the case starts to move is called the starting pressure. The non-working force in the test cylinder becomes the normal force, and the two plastic valves are located at the two ends. Oil is supplied to the air at a pressure of 1.5 times the pressure, and the oil supply time is kept at ±2mill
. The oil pressure in the oil chamber is increased to the test pressure, and then the non-working oil chamber is measured. In this test, the oil is moved under the test force. The total movement rate of the chamber is 100m. The positioning upper tow is fixed in the middle position of the clear support rod and run 5 times under the test pressure. Under the test force, the test oil is moved in reverse (real pressure is high) and the force on the cylinder is measured by the test meter. The load efficiency is calculated according to the following formula: Where: p - oil in working chamber, MPa:
P, - non-working chamber oil pressure, MPE:
A——effective area of ​​working chamber efficiency, mm2; A,——effective area of ​​non-working chamber efficiency, mm2,
Test certificate 90C, under the test pressure. Drum test: The piston is tested through the full stroke to meet the technical requirements. Record the movement of the sleeve: The test can be shortened to the maximum value according to the comparison. The oil leakage at the rod can be measured and observed whether the positioning can be carried out. At the same time, record the value of F.P and produce the value according to the formula. Observe the operation and external resistance conditions. JB/T9B34-1999*. 1.1.2.3 Under the test oil temperature and test force, the piston stroke of the tested cylinder is not less than 9% of the full stroke, and the average running speed is 50-150mm/s. The total running distance of the living chamber shall not be less than: 120km1, and the cylinder used for the lifting system of the operating machine shall be 30×10 cycles. The continuous running of each stage shall not be less than
4.7.1.2.4 The test is divided into four stages. The number of cycles in each stage is 25% of the total number of cycles (or the corresponding piston running distance). After each stage, the internal leakage and external leakage performance inspection shall be carried out according to the method in Table 5 (the external leakage can be inspected during the durability test) 4.2.1, 3 Inspection of the internal cleanliness of the oil pipe 4.1.1.3.1 Collection location of pollutants: inside of the oil pipe 4.2.1.3.2 Decontamination liquid: 4.2.1.3.3 Test equipment for No. 120 free agent gasoline: 202 type medium-continuous quantitative analysis filter group, balance with an accuracy of -10,000 parts per million, constant temperature drying box, 2 incubators, 1 container.
4.2.1.3.4 Preparation before testing: Pass the No. 120 free agent gasoline through a filter membrane with an accuracy of 12m. All the tools and the outside of the inspection cylinder should be cleaned before inspection. Put two pieces of filter paper into two incubators respectively, put them into the drying cage in a half-covered state, and dry them at 105°C for 0.5h. Take them out, close them when taken out, weigh them separately until they are completely weighed and record them, and put them into the desiccator for use. 4.2.1.3.5 Inspection process: disassemble the waste and put it into the incubator. Use a white cloth to clean the part in contact with the working medium. After cleaning, filter the waste in the incubator through the spare double-layer filter paper. Rinse the upper filter paper with 50mL of cleaning solution to remove the oil. 4.2.1.4 Appearance inspection: Detailed visual inspection. Inspect the oil cylinder under test item by item in 3.11. 4.1.1.5 During the inspection process, no adjustment, repair or replacement shall be made to the test piece: 4.2.2 Strict test
Perform performance test on item 4 and item 6 in the inspection form 5. The piston shall cycle through the full stroke for 5 times and there shall be no oil leakage at the beginning of the piston. And conduct appearance inspection according to 3.11
S-type inspection rules
5.1 Each product must undergo factory test and can only be shipped after passing the inspection by the production and technical inspection department. 5.2 Product type test shall be carried out in any of the following situations: a) New product finalization;
There are major changes in design, process and materials used; c) Change of production or restart of production after suspension of more than 2 years; d) Products that have been put into production for not less than 1 every 5 years. 5.3 Inspection regulations for type test
5.3.1 Sampling plan and judgment rules for approved products shall be in accordance with the relevant provisions of the standards for product classification. 5.3.2 The inspection shall be carried out in accordance with the provisions of 4.2, and the inspection results shall meet the requirements of Chapter 3. 5.4 Upon delivery, the user may conduct a sample inspection in accordance with this standard, or may conduct an inspection in accordance with the provisions of the contract. The durability may be evaluated based on the test data provided by the quality supervision and inspection unit within the validity period. b Marking, packaging, transportation and storage wwW.bzxz.Net
6.【Each cylinder shall have a label, which shall indicate a) manufacturer name and address:
6) product name and model:
JBT9834—1999
) product main technical parameters: rated positive sequence, chain diameter, stroke, etc.; d) factory number, factory opening date.
6.z Packaging
6.2.1 After the cylinder test, the oil shall be drained out, and each oil port shall be sealed with an oil-resistant plug. The external thread shall be protected. 6.2.2 The packaging materials should be moisture-proof and ensure that they will not be damaged during transportation. 6.2.3 Each oil cylinder should be accompanied by a product certificate and instructions for use. 6.2.4 The outside of the packaging box should be marked with: product name, model, sales quantity, gross weight, departure station, arrival station, manufacturer and address, consignee and address, packing date, and transportation precautions, etc. 6.2.5 All documents and spare parts for each cylinder should be packed into the box together with the product. 6.3 The oil cylinder should be stored in a well-ventilated, dry and clean place and kept properly. 6.4 On the premise that the user complies with the storage, installation and use rules, if the product is not used normally due to manufacturing quality problems within 1 month from the date of delivery, the manufacturer shall implement the "Regulations on the Responsibility for the Treatment, Replacement and Return of Agricultural Machinery Products":4 The test is divided into four stages. The number of cycles in each stage is 25% of the total number of cycles (or the corresponding piston running distance). After each stage, the internal leakage and external leakage performance should be checked according to the method in Table 5 (the external leakage can be checked during the durability test). 4.2.1.3 Inspection of the internal cleanliness of the oil pipe 4.1.1.3.1 Collection location of pollutants: inside of the oil pipe 4.2.1.3.2 Decontamination liquid: No. 120 solvent gasoline 4.2.1.3.3 Grid test layer: 202 type medium-sized quantitative Analytical filter group, balance with precision of 1/10,000, constant temperature drying box, 2 incubators, 1 container.
4.2.1.3.4 Preparation before testing: Use a 12m precision filter membrane to filter No. 120 gasoline, all the tools and the outside of the inspection cylinder should be cleaned before testing, put two filter papers into two incubators respectively, half cover them into the drying cage, dry them at 105℃ for 0.5h, close them when taken out, weigh them respectively and record them, and put them into the dryer for use. 4.2.1.3.5 Inspection operation process: disassemble the parts, put them into the tray, clean the parts in contact with the working medium with a white cloth, wash them, and then clean the sensor through the spare double-layer filter paper, and rinse the upper filter paper with 50mL of cleaning liquid to remove the oil. Material: Put the two layers of filter paper in two culture vessels respectively, and then put them in a drying oven with half cover, and dry them at 105℃ for 2h. Take the weight difference, weigh them to a constant weight and record it. Subtract the weight of the filter paper before drying from the weight difference, and calculate the total weight of the contaminated object.
4.2.1.4 Appearance inspection
Detailed visual inspection, inspect the tested oil cylinder item by item in clause 3.11. 4.1.1.5 During the inspection process, no adjustment, repair or replacement shall be made to the test piece: 4.2.2 Strict test
Perform performance test on item 4 and item 6 in the inspection form 5. The piston shall cycle through the full stroke for 5 times and there shall be no oil leakage at the beginning of the piston. And conduct appearance inspection according to 3.11
S-type inspection rules
5.1 Each product must undergo factory test and can only be shipped after passing the inspection by the production and technical inspection department. 5.2 Product type test shall be carried out in any of the following situations: a) New product finalization;
There are major changes in design, process and materials used; c) Change of production or restart of production after suspension of more than 2 years; d) Products that have been put into production for not less than 1 every 5 years. 5.3 Inspection regulations for type test
5.3.1 Sampling plan and judgment rules for approved products shall be in accordance with the relevant provisions of the standards for product classification. 5.3.2 The inspection shall be carried out in accordance with the provisions of 4.2, and the inspection results shall meet the requirements of Chapter 3. 5.4 Upon delivery, the user may conduct a sample inspection in accordance with this standard, or may conduct an inspection in accordance with the provisions of the contract. The durability may be evaluated based on the test data provided by the quality supervision and inspection unit within the validity period. b Marking, packaging, transportation and storage
6.【Each cylinder shall have a label, which shall indicate a) manufacturer name and address:
6) product name and model:
JBT9834—1999
) product main technical parameters: rated positive sequence, chain diameter, stroke, etc.; d) factory number, factory opening date.
6.z Packaging
6.2.1 After the cylinder test, the oil shall be drained out, and each oil port shall be sealed with an oil-resistant plug. The external thread shall be protected. 6.2.2 The packaging materials should be moisture-proof and ensure that they will not be damaged during transportation. 6.2.3 Each oil cylinder should be accompanied by a product certificate and instructions for use. 6.2.4 The outside of the packaging box should be marked with: product name, model, sales quantity, gross weight, departure station, arrival station, manufacturer and address, consignee and address, packing date, and transportation precautions, etc. 6.2.5 All documents and spare parts for each cylinder should be packed into the box together with the product. 6.3 The oil cylinder should be stored in a well-ventilated, dry and clean place and kept properly. 6.4 On the premise that the user complies with the storage, installation and use rules, if the product is not used normally due to manufacturing quality problems within 1 month from the date of delivery, the manufacturer shall implement the "Regulations on the Responsibility for the Treatment, Replacement and Return of Agricultural Machinery Products":4 The test is divided into four stages. The number of cycles in each stage is 25% of the total number of cycles (or the corresponding piston running distance). After each stage, the internal leakage and external leakage performance should be checked according to the method in Table 5 (the external leakage can be checked during the durability test). 4.2.1.3 Inspection of the internal cleanliness of the oil pipe 4.1.1.3.1 Collection location of pollutants: inside of the oil pipe 4.2.1.3.2 Decontamination liquid: No. 120 solvent gasoline 4.2.1.3.3 Grid test layer: 202 type medium-sized quantitative Analytical filter group, balance with precision of 1/10,000, constant temperature drying box, 2 incubators, 1 container.
4.2.1.3.4 Preparation before testing: Use a 12m precision filter membrane to filter No. 120 gasoline, all the tools and the outside of the inspection cylinder should be cleaned before testing, put two filter papers into two incubators respectively, half cover them into the drying cage, dry them at 105℃ for 0.5h, close them when taken out, weigh them respectively and record them, and put them into the dryer for use. 4.2.1.3.5 Inspection operation process: disassemble the parts, put them into the tray, clean the parts in contact with the working medium with a white cloth, wash them, and then clean the sensor through the spare double-layer filter paper, and rinse the upper filter paper with 50mL of cleaning liquid to remove the oil. Material: Put the two layers of filter paper in two culture vessels respectively, and then put them in a drying oven with half cover, and dry them at 105℃ for 2h. Take the weight difference, weigh them to a constant weight and record it. Subtract the weight of the filter paper before drying from the weight difference, and calculate the total weight of the contaminated object.
4.2.1.4 Appearance inspection
Detailed visual inspection, inspect the tested oil cylinder item by item in clause 3.11. 4.1.1.5 During the inspection process, no adjustment, repair or replacement shall be made to the test piece: 4.2.2 Strict test
Perform performance test on item 4 and item 6 in the inspection form 5. The piston shall cycle through the full stroke for 5 times and there shall be no oil leakage at the beginning of the piston. And conduct appearance inspection according to 3.11
S-type inspection rules
5.1 Each product must undergo factory test and can only be shipped after passing the inspection by the production and technical inspection department. 5.2 Product type test shall be carried out in any of the following situations: a) New product finalization;
There are major changes in design, process and materials used; c) Change of production or restart of production after suspension of more than 2 years; d) Products that have been put into production for not less than 1 every 5 years. 5.3 Inspection regulations for type test
5.3.1 Sampling plan and judgment rules for approved products shall be in accordance with the relevant provisions of the standards for product classification. 5.3.2 The inspection shall be carried out in accordance with the provisions of 4.2, and the inspection results shall meet the requirements of Chapter 3. 5.4 Upon delivery, the user may conduct a sample inspection in accordance with this standard, or may conduct an inspection in accordance with the provisions of the contract. The durability may be evaluated based on the test data provided by the quality supervision and inspection unit within the validity period. b Marking, packaging, transportation and storage
6.【Each cylinder shall have a label, which shall indicate a) manufacturer name and address:
6) product name and model:
JBT9834—1999
) product main technical parameters: rated positive sequence, chain diameter, stroke, etc.; d) factory number, factory opening date.
6.z Packaging
6.2.1 After the cylinder test, the oil shall be drained out, and each oil port shall be sealed with an oil-resistant plug. The external thread shall be protected. 6.2.2 The packaging materials should be moisture-proof and ensure that they will not be damaged during transportation. 6.2.3 Each oil cylinder should be accompanied by a product certificate and instructions for use. 6.2.4 The outside of the packaging box should be marked with: product name, model, sales quantity, gross weight, departure station, arrival station, manufacturer and address, consignee and address, packing date, and transportation precautions, etc. 6.2.5 All documents and spare parts for each cylinder should be packed into the box together with the product. 6.3 The oil cylinder should be stored in a well-ventilated, dry and clean place and kept properly. 6.4 On the premise that the user complies with the storage, installation and use rules, if the product is not used normally due to manufacturing quality problems within 1 month from the date of delivery, the manufacturer shall implement the "Regulations on the Responsibility for the Treatment, Replacement and Return of Agricultural Machinery Products":
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