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ICS 5K0.10
Machinery Industry Standard of the People's Republic of China
JB/T9835.1-1999
Agricultural Gear Pump
Technical Requirements
Technical requirements of gear pump for agriculture1999-08-06Published
National Bureau of Machinery Industry
2000-01-01Implementation
JB/TV835.1-1999
This standard is a revision of ZDT63004.1-87 Millimeter hydraulic gear pump basic standard, ZBy63004.2-87 Tractor hydraulic gear ticket technical requirements and ZBT63004.3-B7 "Tractor hydraulic gear pump test method". The revision is to merge the above three standards. The following major technical contents have been changed from the original standard: Cleanliness index is improved by one level: The drop cleanliness test method has been added. The standard replaces ZBT6304.1~004.3-87 from the date of implementation. Appendix A, Appendix B, Appendix and Appendix D of this standard are all general appendices. This standard was proposed and approved by the National Technical Committee for Tractor Standardization. The drafting unit of this standard is Luoyang Tractor Research Institute. This standard is authored by: Ma Quanfu, Chen Linhui and Fan Jun
Machinery Industry Standard of the People's Republic of China
Technical conditions for gear pumps for agriculture
Technical conditions for gear pumps for agriculture JB/T 9835.1—1999
Generation 7RT63N04.1-004.3--6
This standard specifies the basic characteristics, technical requirements, test methods and inspection rules of agricultural gear pumps. This standard applies to agricultural gears with a rated pressure of 10-25MPa (hereinafter referred to as gears). 2 Reference standards
The provisions contained in the following standards constitute standard equivalents through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2346-1988 Nominal pressure series of hydraulic pneumatic systems and components GB/T2347-1980 Nominal displacement series of hydraulic pumps and motors GB/T3766-1983
General technical conditions for hydraulic systems
General technical conditions for hydraulic components
GB/T 7935-1987
Responsibility for repair, replacement and return of agricultural machinery products 3 Basic data
3.1 Nominal power shall comply with the provisions of GB/T 2346. 3.2 Nominal displacement shall comply with the provisions of GB/T 2147. 3.3 Nominal speed shall comply with the provisions of Table 1. Table 1
Nominal speed
4 Technical requirements
4.1 General technical requirements shall comply with the provisions of 1.2-1.7 of 0B/T 935-1987. 4.1 The main technical indicators of the product shall comply with the provisions of Table 2. 4.3 The gear housing should be subjected to the above test (also carried out after assembly) with the test pressure of 2 times the rated repulsive force for 5 minutes. There should be no leakage or damage to parts.
4.4 The radial displacement of the gear driving gear shaft surface relative to the mounting flange stop should meet the design requirements. 4.5 During the overrun, overspeed and overstuck tests, the gear should run without abnormal phenomena. 4.6 The gear should be installed in the right position or in the left position when ordering. The rotation direction indication on the gear pump is clear and the installation is secure. 4.7 Appearance quality of the gear pump
National Machinery Industry Bureau 1909-0 8-06 approved 2000-01-01 implementation
JB/T9835.1-1999
4.7.1 The joint surface of the gear pump housing and the front and rear required offset plate: should comply with the provisions of 1.8 in GB/T7935-1987, 4.7.2 The label should be written clearly and correctly, and the installation should be firm and flat. 4.7.3 The exposed non-machined surface of the gear pump must be natural color or painted, and the coating must be uniform in color. The outer surface should be smooth and flat, and should not have defects such as scratches. Standard parts such as screws and screw caps should be rust-proof. Table 2
5 Test method
Capacity and effect Rate
Total efficiency
Cleanliness
Absorption
Noise generation
Air tightness
Low exhaust gas test
External leakage
Interruption test
5.1 Test conditions
1. Test oil
>5D-100
During the air tightness test, the gear system shall not have any leakage at the starting point above 5 ohms, and no isocyanate
Technical indicators
During the whole process of the wheel replacement test, the screen shape shall not leak. Its parts shall not leak oil
During the durability test, the volumetric efficiency shall be based on the specified value, and the decline shall not exceed 5%. It is recommended that the parts have no abnormal damage or damage
a) Oil: mineral oil with a kinematic viscosity of 25-35cS1 at 65. It is recommended to use tractor hydraulic and transmission dual-purpose oil N100D, N1, N68:
b) Oil temperature: except for those clearly specified in the test method, the oil temperature of the performance test in the follow-up test is 25±2, and the oil temperature of the durability test and factory test is 65±4
e) Filtration condition: up to 25±m
5.1.2 Test equipment and measuring instruments
See Appendix A [Appendix A] for the schematic diagram of the test system 41 and Figure A2 in Appendix A. b) The instruments used in the test should be calibrated by the relevant departments and within the allowable use period of the calibration sheet. The accuracy of the instrument shall comply with the range specified in Table 3. Other requirements shall comply with the provisions of GB/T3766. Calibration of the instrument
True pressure gauge
Torque gauge
Temperature gauge
J/T9835.11999
Note: D accuracy is used for group test and C accuracy is used for factory test. 5.1.3 Position of measuring point bzxZ.net
) The pressure measuring point shall be set at (2-4) d (pipeline diameter) away from the inlet and outlet of the test pump. When obtaining the test span, it is allowed to place the measuring point farther away from the test pump: but the pressure loss must be considered. b) The temperature point shall be set at (2~4) inches away from the pressure measuring point. 5.1. When testing the efficiency of the test product under steady-state conditions, the reading should be taken after the test system reaches a steady-state condition: 6) The allowable deviation of the sensitive test data from the control value under each test condition shall comply with the provisions of Table 4. Table 4 Note: The type test adopts the monthly precision, and the factory test adopts the monthly precision. .2 The main calculation formulas are shown in formulas (1) to (4) Volumetric efficiency: Total efficiency: Output sand press: Input mechanical power: Where: Volumetric efficiency, %: a_gtn×100% P2eqcex10
2 yuan, 1
Total efficiency. %:
Output flow rate, kW;
Input mechanical power, kw;
JH/T 9835.1-1999
Displacement at test pressure, mLT
Displacement at no-load pressure, mLr:
Flow rate at test pressure, Lmin:
Output flow rate at no-load pressure, Lmin
Test speed, mi;
No-load speed, /min;
Output test speed, MPa;
Input speed, N·m
5.3 Test items and test methods
5.3.1 Performance test
The test items and methods shall be in accordance with Table 5.
Test Items
Run-in Test
Air Tightness Test
Air Containment Non-maximum Test
Efficiency Test
Popular Air Determination
Low Resistance Test
High Demand Test
Start under no-load pressure, run to the rated pressure for 1000mm, gradually increase the fuel consumption after combustion, run in stages to the rated pressure, and then turn to the "test cavity is filled with 6n kPa gas production, always no anti-rust strategy will be analyzed under the condition of Imin
maximum air pressure\, the displacement air pressure at the nominal speed selection, after the nominal speed is lowered by 1mm, start to measure the equivalent displacement of the original displacement, and see the recording (prompt recording). Of course, the pieces are gradually increased, at least the external spare
running-in reaches the nominal speed of the material collection kidney
, the load Leli T said
is under the nominal displacement
9.5%—110% range
) you make the efficiency curve,
consider the following:
the measured pressure is 25%, 40%, 55%, 70%, 85% of the rated force in the range of C1, C2, and 100%F,
2 respectively measure the nominal speed and at least about 5%71%, 55% and 40% of the nominal speed and the lowest "light",
read the above-mentioned force level under the condition of rotation, and measure the no-load output single pressure data of the above-mentioned force points at 20-35℃ and 7080℃. The oil temperature is below -20℃, and the engine is started to test the oil viscosity. According to the design, under rated conditions, the inlet suction pressure is above 90℃, and the continuous operation for 1h is as follows: Draw the oil viscosity 20-35% efficiency line in time. Test items: overspeed test, pressure test, sound pressure test, sound volume test, JB/T 9835.1-1999
Table 5 (end)
Interpretation and
At 5% of the special speed and the specified maximum speed, run continuously for 15 minutes at the rated pressure and air-fuel pressure respectively. At the nominal speed, run continuously for 30 minutes at 125% of the rated power or the specified high pressure
At 1500 minutes, measure the noise under no-load and constant pressure conditions respectively:
Measure at least 0 evenly distributed positions on 12 different spherical surfaces with a radius of 1m from the load or pumping. 1) Cross-pressure conditions, indicate the following conditions when the output does not exceed the rated output: 2. The output can be calculated at low speed. 3) Low-pressure test items are allowed in the test of the selected machine, 4. The conditions under rated pressure and nominal speed. 5.3.2 Endurance test
The sound value of the end of the test is lower than 10dD(A)
, and the disc is not allowed to stand still.
This item is tentatively designated as
5.3.2.1 The endurance test is divided into two groups: low-speed plus impact composite endurance test (i.e. low-speed test followed by impact test) and low-speed and overload composite endurance test (i.e. low-speed test followed by overload test). Each group of tests is conducted with one gear recorder. 5.3.2.2 The data in Table 6 should be measured and recorded before and after the endurance test. The test oil temperature is 65°C ± 2°C. Table 6
Minimum speed
Nominal speed
115% of nominal speed
Speeded speed
Air pressure
No-load pressure
Sugar pressure
Empty pressure
Ti Baoyuli
5.3.2.3 Acid test method shall be as specified in Table 7,
5.3.3 Cleanliness inspection
a) Part where pollutants are collected: inner cavity of gear pump. h) Cleaning liquid: No. 120 solvent gasoline
auxiliary out Shi Shi
plastic torque
c Inspection tools: 202 medium-speed fixed disk analyzer, one ten-thousandth accuracy, constant temperature at explosion symbol, 2 incubators, 1 container with
) Preparation before inspection 1. Operation: Filter the No. 120 solvent gasoline with a 1.2m accuracy filter membrane, all inspection tools and the outside of the gear pump should be disinfected and cleaned before inspection. Put the two filters into two new incubators respectively, put the half-covered system into the drying box, take out at 105 "temperature, close the cover when sucking out, and record the constant volume respectively, and use it in the explosion device. 5
JBrT 9835.1-1999
e) Check the accumulation of oil: put the chain into the gear pump, filter it with a white cloth in a container, and then filter the washing liquid in the container through a double-layer cover paper: use another 5DmL to clean the upper filter paper to remove the oil stains, put the upper and lower filter papers into two incubators respectively, half cover them in a drying box, dry them at 105℃ for 2h, close the cover when taking them out, weigh them respectively and record them. This mass is respectively the dried paper before magnetic filtration, and the sum of the mass difference is the total mass of the pollutants. Table?
Test item
Impact test
Impact test
Group test
Disassembly should be checked
6 Inspection rules
Content and method
Turn at the specified pressure and the specified low speed for 30 minutes. The deep suction vacuum of the oil does not exceed 1Pe
The impact test is carried out at a viscosity less than or equal to 30 times per minute at the nominal speed. The loading bed force is 1IU% of the assumed pressure (P.,) and the pressure holding time should be greater than 13 cycles. The lower pressure is lower than 10% of the rated output, and the remainder is removed (see Appendix D1), which is 0×10 times. The daily suction vacuum of the oil system does not exceed 17kPa
Under the nominal rotation, the working condition of 125% of the rated pressure, continuous operation 1o0h
Oil suction port, its empty space does not change with [Pa
After completing the above test, the test pump is tested and checked
During the test, the positive belt
Abnormal phenomenon
The waveform
There is no abnormal belt during the continuous operation
6. Each gear must be tested before leaving the factory. It can only leave the factory after passing the inspection of the technical inspection department of the manufacturer. 62! Test
6.2.1 Comprehensive running-in test
The test pump is started under no-load condition, and then increased to the first-level speed. At this speed, the test acid pump is subjected to pressure cycle test (addition 1.0s, load 1.0s). Each force cycle stage is repeated 10 times. See Table 9. Pressure cycle increasing stage 1~3: b) The gear system increases the speed to the second stage with no-load pressure. At this speed, the test system enters the pressure cycle test (pressure 1.s, load 1.0g). Each pressure cycle stage is repeated 10 times, see Table 9. Pressure cycle increasing stage 4-6; b) The gear pump increases the speed to the nominal speed with no-load pressure. At this speed, the test ticket conducts the pressure cycle test (load 10s, unload 1.0g. Each pressure cycle stage is repeated 10 times. See Table 9. Pressure cycle increasing stage 7~9: b) The gear system is unloaded to the full load pressure, and the pump discharge and input torque are recorded at the nominal speed. Then the system pressure is increased to the rated speed and the pressure is maintained for 1ti. During this steady-state operation time, the pump discharge is recorded and the volumetric efficiency of the gear system is calculated after the test.
6.2.2 Leakage, noise, vibration, temperature rise and other observation test vehicles for comprehensive running-in or testing of the whole device, gear pump parts shall not be condensed. Noise, vibration, temperature rise and other abnormal phenomena, air-conditioning
Nominal speed
Second stage transmission
Second stage transmission
Unified chain
Constant material construction
Time
JR/T9935.1--1999
Nominal speed
Second stage transmission speed
Center ±4℃
Figure 1, comprehensive cycle time
1504-2000
Nominal speed
Note: The first stage transmission speed and the second stage transmission speed can be determined according to the needs. Table 9
3 (p,)
7(p)）
1m is the narrow load annual force:
2P's! Le force is 10% of the rated service force
? The force of P~P can be determined according to the need, but not less than 3 pressure knobs 20:
>2000-3000
Nominal speed
6.3 Type test
JB/T9835.1-1999
6.3.1 The number of test discs is stipulated to be 5, of which! 1 only performs performance test, 2 shall be subject to endurance test in addition to the pseudo-frame test, and the other 2 shall only perform the clearance inspection. All test items must be qualified before identification and batch production can be carried out. Type tests must be carried out in any of the following situations: a) New product development and batch production identification (including old product transfer); b) When production is resumed after more than 2 years of suspension; c) When changes in product design, technology or materials used affect product performance and durability; When the factory test or quality verification inspection results of the finalized product show unacceptable deviations: 6.3.2 The inspection and evaluation of type tests shall be in accordance with the relevant provisions of the product quality classification standards. 6.4 Upon delivery, the user has the right to inspect the product quality according to the standards. The number of random inspections shall be determined by negotiation between the supply and demand parties. Marking, packaging, storage
7.1 Marking
Each gear has a label, and the label must be marked with the following content: manufacturer name and address
b) product name and model;
e) main technical features: nominal displacement, rated pressure, nominal rotation speed; production number:
=) factory date.
7.1 Packaging
7.2.1 The inner gear that passes the factory test shall be equipped with inlet and outlet oil plugs and shaft sleeves. 7.1.2 The packaging must be semi-solid and have anti-rust and moisture-proof measures. 7.2.3 The packaging box shall be accompanied by a packing list, product factory certificate, warranty certificate and instruction manual, etc. 2.4 The outer surface of the packing box should be marked with: a) Receiving unit and address: b) Product name and model: c) Number of packages, gross weight and net weight: d) Manufacturer name: e) Transportation precautions; 7.3 Storage: Gears should be stored in a well-ventilated, dry and clean place. They should not be stored together with corrosive items or processed to cause corrosion. B. Quality Assurance: Under the premise that users comply with the product use and storage regulations, if the gear cannot be used properly within 1.5 months from the date of delivery due to problems with the production process, the manufacturer should implement it in accordance with the "Regulations on the Responsibility of Repair, Replacement and Return of Agricultural Machinery Products". AI performance test bench system diagram see Figure A1
42 resistance test bench system diagram see Figure A2.
JB/T9835.1-1999
Appendix to the tea)
Test system schematic diagram
JB/T 9835.1 - 1999
Track when
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