JB/T 8816-1998 Technical requirements for drive axles of construction machinery
Some standard content:
ICS 53. 100
Machinery Industry Standard of the People's Republic of China
JB/T 8816—1998
Construction machinery
Construction machinery-Drive axle-Technical specifications1998-09-30Promulgated
National Bureau of Machinery Industry
1998-12-1Implementation
JR/T8816-1998
This standard is a revision of ZBJ83U14-8Construction machinery-Drive axle-Technical specifications3. When revising this standard, the key parts and chain items to ensure the quality of the weak drive axle were added, the inspection items (or indicators) and acid test methods of the overall performance were appropriately adjusted or reduced, and the coordination and unification with other relevant industry standards were strengthened to make this standard more perfect and practical. Both Appendix A and Appendix B of this standard are indicative appendices. This standard shall replace the 2B dated 014-8 from the date of implementation. This standard was proposed by the Engineering Machinery Standardization Technical Committee of the Ministry of Machinery Industry and is drafted by the Ministry of Machinery Industry. The drafters of this standard are Chen Fenglan, Zhang Rongxin and Gao Mingfa. I
1 Scope
Machinery Industry Standard of the People's Republic of China
Technical Conditions for Drive Axles of Construction Machinery
Constructioz machlzery-nrive axle-Technical specificatlong JB/T $$16:1958
This standard specifies the technical requirements, test methods, acceptance rules, marking, packaging, transportation and quality assurance period of drive axles of construction machinery. This standard applies to drive axles and steering axles of wheeled construction machinery (excluding steering knuckles and their seats, hereinafter referred to as drive axles).
2 Referenced Standards
The provisions contained in the following standards constitute the text of this standard before being cited in this standard. When this standard is revised: the versions shown are valid. If there is a lack of standards, the parties using this standard should consider the possibility of using the latest versions of the following standards. GE/T1182—1996
GR/T 118--159G
GB282887
GB/T 3476.1-1995
GE 1005588
CB112-
CB/T 133065 1
GB3IS91
JR/T6928-91
JB/T 592991
I3/T 6936—01
JB/T5938-1
JB/T :939-91
JB/T594291
JB/T594391
IB/T 544—91
JIB/T645—U1
IB/T 6547-01
JBT 5948-91
JRT 6949—91||t t||JB/T 604192
JB/T 7158-53
JB/T 8548—1857
General rules, definitions, symbols and representation of shape and position tolerances Shape and position tolerances Pay attention to tolerance values
Batch inspection counting sampling procedures and sampling tables suitable for continuous batch inspection cycle inspection counting sampling procedures and sampling tables (suitable for checking the stability of the production process) Four-column straight-cut chain number Basic gear sector tolerance New open line Guogui concave gear drag
Whose gear is difficult to use Curved surface gear accuracy
Shape and position tolerance Setting tolerance
Engineering machinery support drive analysis bench test method
Engineering machinery drive axle reliability test method Machine cutting workpiece pass technical record
Engineering machinery
Engineering machinery
Engineering embedding
T engineering machine is
Overview of engineering
Engineering Machinery
Engineering machinery building
Engineering machinery
Engineering machinery
General technical properties of ductile iron parts
General technical specifications for high-speed steel parts
General technical conditions for free forgings
General technical conditions for connection
General technical conditions for heat-treated parts
General technical specifications for assembly
General technical parts for packaging
Technical conditions for disc brakes
Technical specifications for engineering performance shoe brakes
Technical conditions for drive axles of engineering machinery, reducers, gear pairs, cleanliness determination methods for mechanical parts, technical conditions for power shift transmissions of engineering machinery, approved by the National Rope and Ladder Industry Week 1998-0930
Implementation in 1998120
JB/T S1148 ··94
83 011-9
JB/T BB16-1998
Reliability test method, fault classification and assessment of wheeled loaders Driving axle of wheeled engineering machinery
3.1 Three-axle reducer: a device that reduces the input power and transfers it to the half-axle and wheels; 3.2 Wheel rim or speed reducer, a gear reduction mechanism close to the wheel plate; 3.3 Braking system, a mechanism assembly that ensures that the working wheel on the bridge produces a strong reverse braking torque. 3.4 Axle load: the vertical load borne by the drive axle when the excavator is fully loaded and parked on the horizontal ground. 3.5 Other terms shall comply with the provisions of ZR JR3 01, 4.1 General requirementsWww.bzxZ.net
4.1.1 The drive axle and its components shall be manufactured according to the product drawings and technical documents approved by the current standard and meet the requirements of technical standards. When the user has special requirements, the manufacturer shall be consulted. 4.1.2 For the raw materials required for the drive axle, in addition to the original supplier's certificate of conformity or quality certificate, sampling inspection shall be carried out when entering the factory. For example, the physical and chemical acid test results of the materials shall be used as the standard when the certificate of conformity is issued. They can be used only after they are confirmed to be qualified. 4.3 Purchased and outsourced parts must have a certificate of conformity and sampling inspection shall be carried out. They can be used only after they are confirmed to be qualified. 4.1.4 The quality of the connecting materials shall comply with the provisions of 33/T5042. 4.1.5 The design of the general connection parts shall comply with the provisions of [BF5943. 4.2 Gear
4.2.1 Cylindrical gear
4.2.1.1 The precision of the external gear shall not exceed the 8-7-7 level specified in GB10C95. In the planetary transmission, the precision can be one level lower than the corresponding sun gear or running gear structure under the motion of the inner gear. 4.2.1.2 The minimum normal deviation of planetary transmission shall be determined according to the standard dimension tolerance IT9-1T10 based on the center. 4.3.1.3 The surface roughness of the cylindrical gear teeth shall comply with the provisions of 3.2.5 of JB/TA51R195?, and its reference surface runout tolerance shall not be less than 10.
4.2.1. The effective grinding depth, hardness and metallographic structure of low-end alloy steel gears shall comply with the provisions of JB/T58-10732.2.
4.2.1.5 The surface hardness and metallographic structure of medium carbon alloy steel gears shall meet the following requirements: a) The surface hardness of medium carbon alloy pin gears shall be 0~5; b) The hardness of the inner tooth surface shall not be less than 45HRC, and the core hardness shall not be less than 240~286HRC; c) The induction gears shall meet the requirements of 4.3.4 in JB/T5944-91; 4.2.1.6 When the gear aperture is used as a bearing, its surface hardness shall not exceed 5&HRC. The value of Dm shall not be greater than 0.5; the tolerance grade of diameter and diameter shall not be less than the minimum tolerance grade. Note: The shape, position, etc. specified in the standard shall comply with the provisions of GB/T18. 4.2.2 The diameter of the gear pair and the reducer output wheel of the main reducer shall comply with the requirements of the drawing, and the diameter shall not be less than 8 degrees specified in GB1S65 (except as clearly specified in this standard).
4.2.2.1 The tooth circle dynamic tolerance F shall comply with the provisions of 3.3.2 of GB/T6041-92; 4.1.2.2 The tooth clearance shall comply with:
) The normal tooth surface shall comply with the provisions of 4 in GB/T6041-S2 (the normal side clearance of the pin gears with the ten end face modules of .~5~6.35 is assigned .15~0.20mm);
h) The tooth thickness tolerance EF.EEu and tolerance TT of the large and small gears are determined by the selected values:) The side tooth variation tolerance shall comply with the provisions of 9 pinion in Table 9 of GB1136589. 2
JE/T8816—1398
4.2.2.3 The tooth surface trend and the tooth surface contact spot size shall comply with the provisions of 3.3.5 and 3.3.6 of JB/T6041-92 (except for the position of the contact spot).
4.2.2.4 Except for the N-type gear with equal height (for example, the curved surface gear), the position of the contact point of other gears shall comply with the provisions of 3.3.5 of JH/T6041S2 (the contact point of the gear pair is slightly larger than the small end, about 3.2~0.25 times of the width). The contact point position of the V-type curved surface gear pair with equal height teeth: for the working tooth surface, the middle of the large end and the root of the tooth, and the non-working surface is close to the large end and the tooth top.
4.2.2.5 Gear heat treatment (for the large end face modulus m.*5~6.35, the effective hardening layer depth is 0.9~-1.4mm and the surface treatment shall comply with the provisions of 3.2 of [B/T6041-4]: 4.2.2.6 The geometric dimensions, micro-precision and appearance quality of the gear parts shall comply with JT1/ 4.3.1 The tolerance grade of the open wire spline shall not be lower than the grade 6 gear match specified in GB/T3178.1. H/h and H/f are recommended for the chain with a 30° pressure angle. 4.3.2 The heat treatment of the spline short shaft (hole) and the surface quality of the shaft (or hole) shall comply with the requirements of 3.5.3 and 3.3.6 of GB/T6041-92. 4.3.3 The shaft of the alloy steel is recommended to be treated with induction galvanizing. After the induction galvanizing is stopped or the material is induction galvanized, the surface hardness of the half shaft and the shaft diameter and surface with high melting rate shall be 50~5HRC (when 3>CrMtTi is used, the hardness shall be 40~50HRC). The magnetic heating annealing parts shall be recommended Meet the requirements of J1/T5944-914.3.4. 4.3.4 The surface hardness of the wheel axle and the cross shaft with friction pair should be lower than 56HRC, and the surface material hardness ratio and value should not be less than 10.08mm. The seat and four-axis tolerance grade is allowed to be one grade lower than the size tolerance grade. 43.5 The radius of the fillet at the step of the half-axle rod should not be less than 30mm, and there should be no obvious ripples on the corners and the surface of the rod. 4.3.6 The coaxiality tolerance grade of the two shaft diameters of the cross shaft should not be lower than grade 8; the verticality tolerance of the two common axes should not be lower than grade 7. The two common axes should be in the same plane, and the position tolerance is 0.%mm4.3. It is recommended to use chemical treatment for the four shaft diameters of the cross shaft, and the thickness and quality of the phosphating layer should comply with the requirements of the drawing. 4.4 Castings
4. 4.1 For the reducer housing (referred to as the bracket) and the left and right speed reducer housings, planetary carriers, gears and other important castings, it is recommended to use ductile iron with a tensile strength of 3100N/m and a tensile strength of 3210%. The technical requirements should comply with the provisions of JBT5933. When selecting castings, the casting strength should not be lower than ZG270-500, and the technical requirements should comply with the provisions of JB/T5939. 4.4.2 For the bridge housing, it is recommended to use cast steel with a mechanical property not lower than ZG27I-5G0. The technical requirements should comply with the provisions of JA/T593! 4.5 Machined parts should be of the type of wheel shaft of the bracket, the cross shaft diameter of the differential housing, and the same-beat tolerance of the two bearings of the driving gear and the two auxiliary bearing holes of the driven wheel should not be lower than grade 6. The rest should not be lower than the dimension tolerance grade. 4.5.2 For the two axes of the hypoid gears with a distance between them, the perpendicularity tolerance of the two axes shall not be less than 10 + the maximum allowable deviation of the intersection or the maximum allowable deviation of the step distance, which shall meet the requirements of Table 17 of B11365-89 (i.e. the limited deviation of the axis spacing).
4.5.3 The perpendicularity tolerance of the two common axes of the "-" axis diameter holes intersecting with the five vertical wells on the differential gear shall not be less than Grade 7. The two common axes shall be within the same half plane, and the position tolerance shall be 0.0mm. 4.5.4 The end face shaft (hole ) The end face circular runout tolerance of the center connection should be selected as follows: for bearing shoulder: G-grade bearings should not be lower than grade 7. E-grade bearings should not be lower than grade 6, and others should not be lower than grade 8. 4.5.5 The tolerance of the droop of the base and the (hole) center line should not be lower than grade 7, and the tolerance of the parallelism with the auxiliary (hole) center line and the positioning surface should not be lower than grade 7.
4.5.6 The surface of the hole (shaft) with a dimensional accuracy of not less than grade 7 should be tested for the cylindrical circular tolerance, and its tolerance grade is allowed to be one level lower than the inch tolerance.
4.5.7 The display frame should meet the requirements!
JB/T B16-1998
) The center distance limit deviation shall comply with the provisions of GB10095-88 on the center distance limit difference; b) For the number of planetary gears, the adjacent planetary gear shaft dead chord distance limit deviation (> shall be taken according to Table 1. When the number of planetary gears is >3, the adjacent planetary gear shaft hole limit deviation () can be calculated as follows: Substitute -fi
In the formula, (c09 yuan//0s80*=20s/m
adjacent hole deviation of the gear frame is called =)
Center voltage:
>120~180
180- -250
2250~320
eThe parallelism tolerance of each planetary wheel shaft hole, the parallelism tolerance of the reference shaft, or the perpendicularity tolerance of the reference end should not be less than 6 cables
4.5.8 The position tolerance of machined parts shall comply with the provisions of GB13319, and the rest shall comply with the provisions of JB/T5936. 4.6 Requirements for non-machined surfaces
4.6.1 The non-machined inner surface of the parts shall be cleaned and coated with oil-resistant primer. 4.6.2 The coating on the surface of the parts shall be uniform and shall not be wrinkled or missing. 7 Assembly
4.7.1 All parts must be inspected and meet the requirements of the drawings before assembly. All parts should be cleaned before assembly, and the bolts and nuts used to press the wheel rims should be treated with anti-corrosion. 4. T.3
4.7.4 In addition to meeting the technical requirements marked on the drawings, the assembly of the drive axle should also meet the requirements of B/T5945. 4.7.5 When assembling the main reducer and the wheel reducer, the contact spots on the tooth surface and the tooth side glands should be checked. 4.7.6 After the assembly of the drive axle, the following inspections should be carried out: 1) The correctness of assembly, the rotation of each rotating part, and there will be no jamming, vibration, impact and abnormal noise; 2) Appearance quality inspection; the surface should be even and smooth, without any lubrication, sagging, cracking, bubbling, looseness, etc. The surface paint should be glossy and there should be no defects such as gasification, dirt, oil stains, etc. Unless the user has special requirements, the surface color is black. 4.8 Braking system
4. The 1-stage brake shall comply with the requirements of JD/T 5949. 4. The 3-stage disc brake shall comply with the requirements of B 58. 4. The 3-stage diffuser brake shall be evenly connected and shall not be stuck after inspection. 4.9 Lubricating oil temperature and cleanliness
4.9.1 When the main drive axle tooth package lubricating oil temperature shall not be higher than 904.9.2 Lubricating oil cleanliness limit shall comply with the provisions of Table 2. Table 2 lubricating oil cleanliness limit
Calculation of static pants
>135~250
>260~500
Lower limit
Maximum size
FB/T8816-1908
4.9.3 Wet brake wave pressure oil cleanliness shall not exceed? · Maximum size length, width, height> shall not exceed 15r. 4.10 Noise limit calculation of the test assembly shall comply with the provisions of Table 3. Table 2 Bridge assembly noise limit
Calculation
4.11
4.11.1 Half average no fault working time (MTRF> should not be less than 40h4.11.2 Effective heat (number of cases) should not be less than 1085 bridge total survival time (first major period) should not be less than 7000h4.11.3
5 Test method
5.1 Test sample
The unit shall provide no less than 8 finished products that meet the design requirements: 2 pieces shall be randomly selected for inspection. 5.2 Test equipment
5.21 Install the matching host randomly Test, 5.22 open or low speed,
5.3 Slippery oil tear Hongzong
5.3.I Determination of the final part of the installation test
The installation test section is not less than 15ckm+, and the longest continuous section is not more than Ckm, 5.3.2 Determination of the whole test
The environment must be:
b) Operation time is more than 120min
) Test speed: Idle test, with the main engine reverse high speed 1-1.2 times the speed of the test, the load test should be reported to help load the small test speed.
5. 3. 3 Determination method
5. 3. 3. Installation test; the oil temperature of the bridge tooth oil filling should not exceed 3 times the time. After the installation test, the machine should be shut down and the oil temperature of the oil pan should be measured within 1m. It should not be higher than 85℃ in winter and lower than 5.3.3 in summer.2 Bench test: When the mixing temperature is stable (when measuring twice, it can be confirmed that the temperature difference is not greater than 2C> the measured test value within 30 minutes. Note: The machine is measured in sequence, and the downtime shall not exceed 1i. 4 Full oil cleanliness determination
5.4.1 Determination conditions
Determine during the main system type test,
5. 4.2 Determination method
Before measuring the cleanliness, the preparation and determination of impurities for cleanliness determination shall be carried out in accordance with the provisions of 5.6.7 of JB/E7158-93. The quality analysis shall be carried out in accordance with the provisions of 8.1 and 8.2 of JT715-93. The test report shall be carried out in accordance with the provisions of Chapter 9 of JFT7158-93.
5.5 Frequency determination
5.5.1 Noise determination conditions
JB/E88161998
a! The test device shall be air-conditioned and the noise level shall be sufficient. Test self; b) The driving axle input is the maximum allowable input; c) The working oil of the test bridge is controlled at 5u±5℃; d) The sound level meter is installed in the new position as shown in Figure 1 during the test:) The distance between the sound level meter and any reflector except the ground must be less than 2 meters, and the ground cannot vibrate and seal out significant sound energy. Note: In the figure, the three points A and E are AIAAAAA. Point A is the center line height of the input pump, and the two points A are at the same height. Point A is the selected point in the analysis instrument. 5. 5. 2 Determination method
3) Start the test machine, when the speed reaches the set value, select the "fast" gear of the meter to measure, the microphone should be aligned, the radiation is zero, and the reading of the meter can be taken as the average value of the pointer swing during the observation period. When observing at each measuring point, it shall not be less than 4: If the meter pointer moves within the observation time, change to "slow" when 3B (A) hours. Calculate the contamination value of each point, and take the maximum value of each measuring point as the result of measurement;) The difference between the bridge noise and the background noise shall be less than (A) the difference between the two general people 1A. If the two are in 3-1UB (A> range (the white noise is greater than the background noise), the gate shall be connected to the correct value in Table 1 (that is, the bridge noise minus the correct value). The difference between the measured noise and the snow scene noise is directly
5.%.1 Random ± 1mh (according to the provisions of 4.3 in JB/T51148-9) test, the bridge noise shall not show serious faults (the fault mode shall be in accordance with the provisions of Chapter 3 of B/592991).
5.6.2 Test data. After the test of 5.6.3 is carried out in accordance with the provisions of 4.3 of JB/T5929-91, the MTBF and the effectiveness of the three models shall be tested (calculated according to the formula of 2.4.2 of J/T5929-91).
5.7 Type test
When the drive axle of new design or major improvement is adjusted or quality tested, the type test shall be carried out. In addition to the performance test in accordance with the provisions of 4.9.4.16, 6.1 and Appendix A (suggested appendix) of this standard and 4.1 and 4.2 of JB/T5928, the type test shall also be carried out in accordance with the provisions of 5.6 of this standard. 6.1 Factory Inspection 6.1. Each bridge shall be run-in for 30~60 minutes before leaving the factory to check a) normal operation, balance, no abnormal noise; b) any loose oil in various parts 1.2 The movable bridge should be inspected by the inspection department according to the standard or the relevant technical documents quoted in the factory. For the product, the certificate of conformity should be:
6.1.3 Random documents: that is, the product specification sheet is a brief description of the product, including the product quality certificate) for completeness. 6.2 Oil inspection
6.2.1 Check the quality according to the provisions of GB2R25. The sample shooting plan is used to drive the correction of the eight types of non-conforming adhesive quality level (AQI.) is 5.5. The quality level (AQL) of the B type non-conforming adhesive is .5. The quality level (AQL) of the C type non-conforming adhesive is 40. The general inspection level is determined according to the production batch according to the provisions of Table 2 in 282-87, or negotiated by the supply and demand parties: the specific items are selected by the manufacturer according to the requirements of Section 4 or determined by the supply and demand parties. Juice
! Class A non-conforming items, average unexplained working time (MI), integrity (,) month evaluation 2 types of non-conforming items, cleaning degree, use for life, military parts know that the union is not, the front oil oil products, the surface oil caused by the failure of the seal, 3 types of non-conforming items, peak, 3 chicken quality, paint quality, clean oil (not liquid) need to be fixed and loosened. 6.2.2 From the time the sample is taken out and stored until the inspection is completed, no adjustment, repair or replacement shall be made except for maintenance as required. 6.2.3. The supply department or the ordering party has the right to postpone the product. The batch inspection principle shall be carried out in accordance with the provisions of 6.2.] 6.2.4 Handling of sampling inspection results
If the sample inspection (including the feasibility test) does not meet the specified indicators of this standard, it shall be adjusted within a certain period of time and can only be put into production after re-inspection and acceptance.
7 Packaging, transportation and storage
7.1 The drive axle shall be equipped with a label, and the label size and technical conditions shall comply with the provisions of G3-133C6. The label shall indicate the drive axle model and factory number:
b) Drive axle performance parameters:
Maximum input torque, N+m
Extension load, kN
Maximum input speed, r/min
Total transmission ratio t,
r) Manufacturer name + selection date:
(l) Total weight of the drive axle,
7.2 The drive axle shall be cleaned before packaging. The surface of the external machined part shall be grease-free. 7.3 The packaged drive axle shall be stored in a well-ventilated and air-free warehouse. .4 The standard packaging of the drive axle shall comply with the provisions of JBT5947 and shall ensure that it will not be damaged under normal transportation and storage conditions. 7.41 If the drive axle is used in a bare package, during installation and unloading: the input flange, front drive and wheel joints shall be wrapped protectively: h) The air hole plugs shall be packed separately and the air holes shall be tightly blocked with plastic covers. ?
JH/T8816-1998
7.4.2 The drive axle packaging shall be accompanied by a packing sheet, which shall indicate: e) Drive axle model, specification: b) Packing quantity and date e) Indicate the random documents and attached product list. 7.4.3 The necessary items should include:
company) drive axle product certificate, which should indicate the manufacturer's name, drive axle classification and factory number, drive axle basic data table [see Appendix B]
h) drive axle instruction manual:
c list of wearing parts.
.4.4 The self-made axles of the machine factory may not be packaged, but they should be equipped with protective equipment before installation, and should be equipped with a certificate of conformity issued by the relevant inspection department.
8 Quality Assurance
8.1 The product is guaranteed to last for a long time under the conditions of complying with the product use, maintenance, care and storage rules. During the warranty period, if the product cannot work normally due to poor manufacturing quality, the manufacturer should promptly repair or replace it at its own expense. 2 Warranty period: from the date of shipment from the manufacturer to the date of shipment. (based on the 15th day of the date of charcoal goods> 13 months of cumulative use within 200,000. 8
Main reduction ratio
Wheel reduction
Ya flange gauge can
Flower plug board two installation surfaces. Interval
Installation center fat
To the moving plate diameter
The maximum speed moment
The maximum static bridge street
To the dynamic moment
Total bridge width
Total mass
FB/I 8816-1998
Appendix A
(Suggested Appendix)
Basic parameters of drive axle
Speed ratio
Speed reduction ratio
Installation size of flange
Center plane of mounting seat
Distance between two mounting surfaces of wheel body plate
Minimum diameter of wheel
Minimum input moment
Maximum Main shaft speed
Maximum static axle
Braking torque
Total axle width
Total axle mass
State lubricating oil type
Oil filling capacity
JH/T8816-1998
Appendix H
(Reminder Appendix)
Certificate of conformity attached Basic parameters of drive axle
mro inches)Distance
Installation center width
Drive plate diameter
Maximum torque
Maximum static bridge width
Drive torque
Total bridge width
Total mass
FB/I 8816-1998
Appendix A
(Suggested appendix)
Basic parameters of drive axle
Speed ratio
Side reduction ratio
Installation size of flange
Center plane of mounting seat
Distance between two mounting surfaces of wheel body plate
Minimum wheel diameter
Maximum input torque
Maximum Main shaft speed
Maximum static axle
Braking torque
Total axle width
Total axle mass
State lubricating oil type
Oil filling capacity
JH/T8816-1998
Appendix H
(Reminder Appendix)
Certificate of conformity attached Basic parameters of drive axle
mro inches)
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